US Pat. No. 9,295,127

POWER SUPPLY APPARATUS FOR LED LIGHTING AND LED LIGHTING APPARATUS USING THE POWER SUPPLY APPARATUS

SILICON WORKS CO., LTD., ...

1. A power supply apparatus for an LED lighting, comprising:
a power source unit configured to supply a rectified voltage;
a voltage converter configured to comprise at least one first inductor and to convert the rectified voltage;
an auxiliary coil configured to comprise a second inductor and to supply a detection voltage corresponding to current of the
first inductor of the voltage converter;

a controller configured to control current of the voltage converter using a driving pulse generated in response to a control
signal and a sensing voltage; and

a voltage regulation circuit configured to regulate the detection voltage and to supply the regulated voltage as an operating
voltage for the controller,

wherein the control signal controls a dimming of an LED lighting, and the sensing voltage is voltage fed back after sensing
the current of the voltage converter, and

wherein the voltage regulation circuit comprises:
a constant voltage circuit configured to supply a constant voltage in response to the detection voltage; and
a DC-DC regulator driven by the constant voltage and configured to change an upper limit of the detection voltage so that
the upper limit satisfies an allowable range of the operating voltage and to supply the changed voltage as the operating voltage.

US Pat. No. 9,439,258

CONTROL CIRCUIT OF LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus divided into a plurality of LED channels, comprising:
a current control circuit configured to provide a current path corresponding to sequential emissions of the LED channels in
response to a rectified voltage; and

a flicker reduction circuit comprising a charge and discharge module charged by the rectified voltage and discharging the
LED channels, and configured to control one or more of charge timing, a charged voltage, and discharge timing of the charge
and discharge module such that the charge and discharge module supplies a voltage to the LED channels at least during a control
period at which the amount of current supplied to the LED channels is the smallest.

US Pat. No. 9,143,090

OUTPUT VOLTAGE STABILIZATION CIRCUIT OF DISPLAY DEVICE DRIVING CIRCUIT

SILICON WORKS CO., LTD., ...

1. An output voltage stabilization circuit of a display device driving circuit, comprising:
a power off pulse generator configured to receive positive source voltages and negative source voltages as a high source voltage,
receive a low source voltage having a smaller absolute value than the high source voltage, and generate a positive control
signal and a negative control signal;

a level shifter configured to convert low-voltage data signals into high-voltage data signals; and
an output driver configured to output an output signal having the positive source voltage, the negative source voltage, or
a ground voltage in response to the positive control signal, the negative control signal, and the high-voltage data signals,

wherein the output voltage stabilization circuit stabilizes a voltage of the output signal regardless of a power off sequence
of the low source voltage, the positive source voltage, and the negative source voltage, the output driver comprises:

an output driver driving unit configured to output the output signal in response to the high-voltage data signals,
a positive voltage switch configured to supply, in response to the positive control signal, the positive source voltage to
the output driver driving unit, and

a negative voltage switch configured to supply, in response to the negative control signal, the negative source voltage to
the output driver driving unit, wherein

the output driver driving unit outputs the positive source voltage or the negative source voltage as the output signal.

US Pat. No. 9,480,113

CONTROL CIRCUIT OF LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus divided into a plurality of LED channels, comprising:
a current control circuit configured to provide a current path corresponding to sequential light emissions of the LED channels
in response to a rectified voltage; and

a residual voltage buffer circuit configured to correspond to an LED channel which finally emits light, and buffer a residual
voltage when the rectified voltage rises to a preset value such that the residual voltage occurs,

wherein the residual voltage buffer circuit comprises:
a residual voltage detection unit configured to provide a detection voltage corresponding to an increase of the residual voltage;
and

a switching unit configured to buffer the residual voltage according to the detection voltage.

US Pat. No. 9,104,266

SIGNAL PROCESSING CIRCUIT AND SIGNAL PROCESSING SYSTEM OF TOUCH SCREEN

SILICON WORKS CO., LTD., ...

1. A signal processing system of a touch screen, comprising:
a first switch block configured to switch a plurality of channels set in the touch screen in response to a channel select
signal;

a touch signal processing block comprising a plurality of touch signal processing circuits configured to generate a plurality
of noise detection signals by processing input signals for the respective channels, and generating a plurality of integral
signals by processing the input signals for the respective channels, wherein each of the touch signal processing circuits
generates an integral signal by integrating a differential signal of an input signal to remove continuous noise from the input
signal when the input signal contains the continuous noise. and stops integration of the differential signal when the input
signal contains peaking noise;

a second switch block configured to switch transmission of the plurality of integral signals to an analog digital converter
in response to a multiplexer control signal; and

a control signal generation block configured to generate the plurality of control signals using the plurality of noise detection
signals and generate the channel select signal and the multiplexer control signal.

US Pat. No. 9,572,210

CONTROL CIRCUIT OF LIGHT-EMITTING DIODE LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus which is divided into a plurality of LED channels, the control circuit comprising
a control unit provides a current path corresponding to turn-on states of the LED channels in response to a rectified voltage,
compares a current sensing voltage corresponding to the amount of current flowing through the current path to reference voltages
in response to the plurality of LED channels in order to perform current regulation and to form the current path, generates
a control pulse corresponding to an external dimming control signal therein, and controls a current amount of the current
path by controlling at least one of a turn-on time of the current path and a supply time of the reference voltages according
to the control pulse.

US Pat. No. 9,538,591

LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A lighting apparatus comprising:
a lighting unit comprising a plurality of LED groups each having one or more LEDs and configured to emit light in response
to a rectified voltage, the plurality of LED groups including a first LED group which first emits light in response to the
rectified voltage and provides a path for a first current;

a driving circuit configured to provide one or more current paths to the plurality of LED groups, the one or more current
paths being changed in response to a change of the rectified voltage; and

one or more secondary current sources coupled to one or more of the plurality of LED groups excluding the first LED group,
and each configured to provide a second current which differs according to the change of the rectified voltage,

wherein the rectified voltage is distributed and supplied to the lighting unit and the secondary current source, and
wherein the LED group coupled to the secondary current source performs primary light emission using the first current and
the second current in response to the rectified voltage having a level equal to or more than the level which the first current
provided through the first LED group reaches, and performs secondary light emission using the second current in response to
the rectified voltage having a lower level than the level for the primary light emission.

US Pat. No. 9,538,605

CONTROL CIRCUIT OF LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus divided into a plurality of LED groups, comprising:
a current control circuit configured to provide a current path corresponding to sequential light emissions of the LED groups
in response to a rectified voltage; and

surplus voltage buffer circuits corresponding to a first LED group which emits light in response to the highest light emission
voltage and a second LED group which emits light in response to the second highest light emission voltage, respectively, and
each configured to buffer a surplus voltage higher than the corresponding light emission voltage through voltage control.

US Pat. No. 9,155,147

LIGHT EMITTING DIODE ILLUMINATION APPARATUS AND CONTROL METHOD THEREOF

SILICON WORKS CO., LTD., ...

1. A light emitting diode illumination apparatus comprising:
a light source that includes a plurality of light emitting diode channels including one or more light emitting diodes, and
emits light by application of a rectified voltage obtained by converting an AC voltage; and

a control circuit that selectively provides current paths according to a change in a level of the rectified voltage through
a plurality of switching circuits connected to the light emitting diode channels, resets control pulses provided to the switching
circuits at a time point at which the current paths are changed, and controls pulse widths of control pulses provided to the
switching circuits such that a current supplied to the light source follows a waveform of the rectified voltage.

US Pat. No. 9,464,881

DISPLACEMENT SENSOR, APPARATUS FOR DETECTING DISPLACEMENT, AND METHOD THEREOF

Silicon Works Co., Ltd., ...

1. A displacement detection apparatus comprising:
a processor configured to:
receive a plurality of receiver signals dependent on displacement of a coupler element;
determine a first receiver signal having a signal variation differing from that of other receiver signals, from among the
plurality of receiver signals, depending on the displacement of the coupler element;

acquire information about the displacement of the coupler element and information about a gap between the coupler element
and one of: a transmitting coil and a plurality of receiver coils, wherein the information about the gap is acquired by using
a plurality of second receiver signals from among the plurality of receiver signals except for the first receiver signal,
and each of the plurality of receiver signals is dependent on the displacement of the coupler element; and

compensate for the acquired displacement information using the acquired gap information.

US Pat. No. 9,419,603

GATE DRIVER, DRIVING METHOD THEREOF, AND CONTROL CIRCUIT OF FLAT PANEL DISPLAY DEVICE

SILICON WORKS CO., LTD., ...

1. A gate driver comprising:
a modulation circuit configured to generate a modulated internal gate turn-on voltage by periodically maintaining and dropping
a first constant voltage provided from outside, during an enable period, wherein the modulation circuit starts the enable
period according to any one of a start pulse provided from a timing controller and a carry signal provided from another gate
driver; and

a plurality of output buffers configured to commonly receive the modulated internal gate turn-on voltage, generate a modulated
gate pulse having an inclined falling edge corresponding to a drop of the modulated internal gate turn-on voltage, and output
the modulated gate pulse to corresponding output channels.

US Pat. No. 9,329,724

SIGNAL PROCESSING CIRCUIT FOR TOUCH SCREEN AND METHOD FOR CONTROLLING THE SAME

SILICON WORKS CO., LTD., ...

1. A signal processing circuit for a touch screen, comprising:
a sensing signal receiver circuit configured to receive a sensing signal including a plurality of periodic pulses from a coupling
capacitor of the touch screen, provide a noise detection signal corresponding to a result obtained by detecting noise contained
in the pulses of the sensing signal, and generate a first integral signal in respect of the sensing signal by filtering the
pulses of which the noise is detected; and

a compensation circuit configured to generate a second integral signal by compensating for the first integral signal using
the noise detection signal.

US Pat. No. 9,609,702

LED LIGHTING APPARATUS AND CONTROL CIRCUIT THEREOF

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus, which receives a rectified voltage corresponding to an AC voltage passed
through a dimmer and controls a plurality of LED groups included in a lamp to emit light in response to the rectified voltage,
the control circuit comprising:
a regulation circuit configured to provide a selective current path to the plurality of LED groups which emit light in response
to the rectified voltage; and

a current control circuit configured to sense a current of the current path, control a flow of starting current based on the
rectified voltage during a time including a turn-off period of the lamp, and control supply of a holding current to the dimmer.

US Pat. No. 9,383,844

TOUCH SYSTEM AND CONTROL METHOD THEREOF

SILICON WORKS CO., LTD., ...

1. A touch system comprising:
a plurality of chips connected to sensing lines of a plurality of areas of a touchscreen panel divided into the plurality
of areas and a boundary area among the plurality of areas,

wherein the chips corresponding to adjacent areas share the sensing line of the boundary area among the adjacent areas, and
the plurality of chips differentially amplify sensing signals of the adjacent sensing lines included in the areas, which correspond
to the plurality of chips, and the boundary area adjacent to the areas,

wherein each of the chips performs first sensing that differentially amplifies sensing signals of sensing lines in even sequences
and sensing signals of sensing lines adjacent to one side of the sensing lines in even sequences for one direction of the
touchscreen panel, and second sensing that differentially amplifies the sensing signals of the sensing lines in even sequences
and sensing signals of sensing lines adjacent to the other side of the sensing lines in even sequences.

US Pat. No. 9,356,522

POWER SUPPLY CIRCUIT FOR DRIVING LED LAMP AND POWER SUPPLY METHOD, AND PRIMARY-SIDE CONTROL CIRCUIT OF FLYBACK TRANSFORMER

SILICON WORKS CO., LTD., ...

1. A power circuit for driving an LED lamp, comprising:
a rectification circuit that outputs a rectified voltage;
a boost inductor that outputs a boost current corresponding to the rectified voltage;
a flyback transformer that outputs an output current corresponding to an input current of a primary side from a secondary
side;

a switching circuit that is switched by a pulse type signal to control a of the input current of the primary side of the flyback
transformer;

a valley fill circuit that provides the input current to the primary side of the flyback transformer by energy accumulated
in the valley fill circuit when a boost switching circuit forms a path for increasing the boost current and accumulates the
energy in the valley fill circuit by using the boost current when the boost switching circuit forms a path for accumulating
the energy in the valley fill; and

the boost switching circuit that includes a first diode and a second diode connected with the boost inductor, provides the
path for increasing the boost current through the second diode to the boost inductor in correspondence with turn-on of the
switching circuit and provides the path for accumulating the energy in the valley fill circuit through the first diode, a
first capacitor of the valley fill circuit, and a second capacitor of the valley fill circuit in correspondence with turn-off
of the switching circuit,

wherein the first diode is turned off when the valley fill circuit accumulates the energy higher than a peak voltage of the
rectified voltage.

US Pat. No. 9,166,047

SWITCH CIRCUIT USING LDMOS DEVICE

SILICON WORKS CO., LTD, ...

1. A switch circuit which switches connections of a first terminal and a second terminal, comprising:
a first lateral diffusion metal oxide semiconductor (LDMOS) device and a second LDMOS device of which sources are connected
between the first terminal and the second terminal;

a control resistance configured to form a gate-source voltage for the first LDMOS device and the second LDMOS device; and
a control circuit configured to control the gate-source voltage in response to a first voltage.

US Pat. No. 9,655,187

CONTROL CIRCUIT FOR LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit for an LED lighting apparatus, which controls light emission of one or more LED groups in response to
changes of a rectified voltage, the control circuit comprising:
a driver configured to provide a current path corresponding to light emission of the one or more LED groups; and
a primary current source configured to provide a primary current using a driving current outputted from the current path,
wherein the control circuit provides an operating voltage to an additional device using the primary current.

US Pat. No. 9,203,606

CLOCK RECOVERY CIRCUIT, DATA RECEIVING DEVICE, AND DATA SENDING AND RECEIVING SYSTEM

SILICON WORKS CO., LTD., ...

1. A data receiving device comprising:
a voltage control delay configured to delay a first or second master clock signal, and generate delayed clock signals which
have time differences;

a delay control circuit configured to feed back a part of the delayed clock signals, and control a delay time by which the
first or second master clock signal is to be delayed in the voltage control delay, in correspondence to a phase difference
of the fed-back delayed clock signals; and

a clock generator configured to perform recovery of the first master clock signal by using a first clock-embedded data signal
before a clock is locked and recovery of the second master clock signal by using a second clock-embedded data signal after
the clock is locked, detect a clock edge of an embedded clock signal from the second clock-embedded data signal including
the embedded clock signal in which the clock edge is scrambled, perform descramble of recovering the second master clock signal
by sequentially performing pulldown and pullup after the detected clock edge, and control the detection of the clock edge,
the pulldown and the pullup by using the delayed clock signals.

US Pat. No. 9,406,273

FLAT PANEL DISPLAY APPARATUS AND SOURCE DRIVER IC

SILICON WORKS CO., LTD., ...

1. A flat panel display apparatus comprising:
a source driver integrated circuit including units, which are commonly applied a same power to driving terminals and is arranged
at both sides about a center to form an array, a first power pad and a plurality of second power pads for the power formed,
nodes formed corresponding to both edges and the center of the array and the plurality of second power pads are connected
to have a same line resistance, and including an amplifier having an output terminal connected to the node corresponding to
the center of the array; and

a film mounted thereon with the source driver integrated circuit, and formed a first power line connected to the first power
pad and second power lines connected to the plurality of second power pads, one end of the second power lines being commonly
connected to each other.

US Pat. No. 9,398,660

LIGHTING SYSTEM AND CONTROL CIRCUIT FOR THE SAME

SILICON WORKS CO., LTD., ...

1. A lighting system, comprising:
a light source supplied with a rectified voltage obtained by controlling a phase of AC power using a dimmer;
a power control unit configured to provide a current path for light emission of the light source in accordance with a state
of the rectified voltage; and

a current controller configured to perform charging or discharging in response to an amount of current on the current path
that is changed by characteristics of the dimmer and to control an amount of current for the light emission of the light source
which flows in the current path in accordance with the charging or discharging,

wherein the current controller equalizes the amount of current flowing in the current path by performing the charging and
discharging in a half cycle unit of the AC power.

US Pat. No. 9,363,079

METHOD OF GENERATING MESSAGE AUTHENTICATION CODE AND AUTHENTICATION DEVICE AND AUTHENTICATION REQUEST DEVICE USING THE METHOD

SILICON WORKS CO., LTD., ...

1. A method of generating a message authentication code in a challenge-response authentication of an authentication request
device by an authentication device, the method comprising:
generating, by the authentication device, a first message authentication code by an encryption unit generating a second secret
key by encrypting seed data, a first secret key, and first auxiliary data using an encryption algorithm; and

encrypting, by the encryption unit, the seed data, the second secret key, and second auxiliary data using the encryption algorithm,
wherein the encryption algorithm receives data of a preset base number of bits and encrypts the received data, and the number
of bits of the second auxiliary data varies according to a difference between the number of bits of the first secret key and
the number of bits of the second secret key, the authentication device authenticating the authentication request device by
comparing the generated first message authentication code with a second message authentication code received from the authentication
request device.

US Pat. No. 9,355,609

MALFUNCTION PREVENTION CIRCUIT FOR COG-FORM SOURCE DRIVER INTEGRATED CIRCUIT AND FLAT PANEL DISPLAY CONTROLLER EMPLOYING THE SAME

SILICON WORKS CO., LTD., ...

1. A malfunction prevention circuit for a chip-on-glass-form source driver integrated circuit with a power sequence in which
a low voltage is applied after a high voltage is applied, the malfunction prevention circuit comprising:
a level shifter configured to process an input signal using the low voltage and output a control signal using the high voltage;
and

an initialization circuit configured to initialize the control signal outputted from the level shifter to a constant voltage
while the low voltage is applied at an initial stage of the power sequence and an initialization signal is enabled,

wherein the initialization signal is enabled during a predetermined time from the time at which the low voltage starts to
be applied at the initial stage of the power sequence.

US Pat. No. 9,286,841

EMBEDDED DISPLAYPORT SYSTEM AND METHOD FOR CONTROLLING PANEL SELF REFRESH MODE

SILICON WORKS CO., LTD., ...

1. An embedded DisplayPort (eDP) system comprising:
a source device providing a link symbol clock, first stream data having a fixed value, and second stream data having an unfixed
value; and

a sink device configured to receive the link symbol clock, the first stream data, and the second stream data from the source
device, store a number, as first stored stream data, based on an oscillator clock, the link symbol clock, and the first stream
data, store a number, as second stored stream data, based on a stream clock, the oscillator clock, and the first stored stream
data, wherein the source device is turned off in a panel self refresh mode and the sink device generates a recovered stream
clock, the sink device comprises:

an oscillator configured to provide the oscillator clock;
a stream data regeneration block configured to output the oscillator clock, the first stored stream data, and the second stored
stream data as a reference clock, first regenerated stream data, and second regenerated stream data in the panel self refresh
mode; and

a stream clock recovery block configured to recover the stream clock using the reference clock, the first regenerated stream
data, and the second regenerated stream data to generate the recovered stream clock.

US Pat. No. 9,311,858

CIRCUIT AND METHOD FOR DRIVING OLED DISPLAY

SILICON WORKS CO., LTD., ...

1. A circuit for driving an organic light emitting diode display, comprising:
a source driver that provides data signals to organic light emitting diodes of a display panel and detects variation in threshold
voltages of the organic light emitting diodes to compensate the data signals based on the detected threshold voltages,

wherein the source driver comprises:
N multiplexers for input that selectively output data signals or precharge voltages;
N buffers that buffer the data signals or the precharge voltages which are outputted from the N multiplexers for input, and
output the buffered data signals or precharge voltages to data lines;

M multiplexers for sample/hold each including input channels connected to k data lines of the data lines and at least one
output terminal to which the input channels are sequentially connected, wherein the input channels receive threshold voltages
of organic light emitting diodes through the k data lines from the organic light emitting diodes, and a selected threshold
voltage is outputted through the at least one output terminal; and

M sample/hold circuits each connected with the at least one output terminal of corresponding one of the M multiplexers for
sample/hold to sample/hold the selected threshold voltage provided from the corresponding one of the M multiplexers for sample/hold,

wherein ‘M’ is greater than one and less than ‘N’.

US Pat. No. 9,355,592

SOURCE DRIVER AND BIAS CURRENT ADJUSTING METHOD THEREOF

SILICON WORKS CO., LTD., ...

1. A source driver comprising:
a bias current supply unit that supplies a bias current adjusted in correspondence with a bias current adjusting signal; and
a bias current adjusting signal generation unit that programs trim data by using data provided from an exterior, and provides
the bias current adjusting signal corresponding to the programmed trim data, wherein the bias current adjusting signal generation
unit comprises a trimming section that performs programming of the trim data by using the data and provides the programmed
trim data, wherein the trimming section comprises a trim cell part that includes a plurality of trim cells, and programs the
trim data corresponding to the data in the plurality of trim cells.

US Pat. No. 9,316,697

MANAGEMENT SYSTEM AND ESTIMATING METHOD FOR BATTERY PARAMETER

SILICON WORKS CO., LTD., ...

1. A battery parameter management system comprising:
an amperemeter configured to detect an amount of charge current supplied to a battery from a current source or an amount of
discharge current supplied from the battery to a load;

a voltmeter configured to measure an open-circuit voltage of the battery;
a control switch unit configured to transmit the charge current supplied from the current source to the battery or transmit
the discharge current outputted from the battery to the load in response to a control signal; and

a processor configured to generate the control signal, apply the charge current and the discharge current measured by the
amperemeter and the open-circuit voltage measured by the voltmeter to a battery equivalent model of the battery, and estimate
parameters of elements forming the battery equivalent model,

wherein the battery equivalent model comprises:
an internal resistor of the battery;
an internal capacitor representing the open-circuit voltage of the battery; and
a parallel circuit comprising a dynamic resistor and a dynamic capacitor which exhibit a non-linear operation characteristic
based on an electrochemical reaction inside the battery, wherein the internal resistor, the internal capacitor, and the parallel
circuit are connected in series.

US Pat. No. 9,287,215

SOURCE DRIVER INTEGRATED CIRCUIT AND DISPLAY DEVICE COMPRISING SOURCE DRIVER INTEGRATED CIRCUIT

SILICON WORKS CO., LTD., ...

1. A source driver integrated circuit comprising:
a plurality of pads for inputting power, a portion of the pads being directly connected to an external power source, a remainder
of the pads being indirectly connected to the external power source;

an internal power line that connects the plurality of pads for inputting power to each other;
a common power line that connects a plurality of panel driving circuits to each other; and
a common node that connects a substantial center point of the internal power line to a substantial center point of the common
power line.

US Pat. No. 9,237,618

LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. An LED lighting apparatus comprising:
a power supply unit configured to convert an AC voltage and provide a rectified voltage;
a light source configured to include N LED channels (N is a natural number) including at least one LED; and
a current control circuit configured to divide a varying width of the rectified voltage into N periods in response to a light-emitting
voltages for each LED channel, detect a current flowing in the LED channels corresponding to the period, and control the light
source to emit light by using a current detection voltage corresponding to the detected current,

wherein the N LED channels are arranged within a predetermined region on a substrate and have a heat radiating priority determined
depending on a heat value by light output and a position of the LED channels on the substrate is determined depending on the
heat radiating priority.

US Pat. No. 9,198,248

LED LIGHTING DEVICE AND LED LIGHTING CONTROL METHOD

SILICON WORKS CO., LTD., ...

1. An LED lighting device comprising:
an LED light source unit;
a light intensity control unit configured to provide a light intensity control mode, provide a light intensity control signal
for changing a light intensity after entering the light intensity control mode, and set the light intensity control mode or
change the light intensity control signal by referring to a connection state among a plurality of open-circuit voltage pins;
and

a light source driving unit configured to control a power signal provided to the LED light source unit according to the light
intensity control signal.

US Pat. No. 9,196,218

DISPLAY DEVICE HAVING DRIVING CONTROL CIRCUIT OPERATING AS MASTER OR SLAVE

SILICON WORKS CO., LTD., ...

1. A driving control circuit of a display device comprising one data driving circuit operating as a master and one or more
data driving circuits operating as a slave,
wherein each of the data driving circuits comprises
an oscillator configured to provide a clock signal, generates data using the clock signal in response to input of an abnormal
display signal, provides the generated data to a display panel, provides a data enable signal to the one or more data driving
circuits operating as the slave when set to the master, matches an end time of a horizontal blank interval, in which the data
is loaded into a data line of the display panel with the data enable signal when set to the slave, and provides a gate output
enable signal to stop the data of the data line from being transmitted to a pixel before a data latch enable signal is supplied.

US Pat. No. 9,093,244

METHOD FOR ROUTING GAMMA VOLTAGES IN FLAT PANEL DISPLAY

SILICON WORKS CO., LTD., ...

1. A method for routing gamma voltages in a flat panel display that includes a plurality of source driver integrated circuits
(SDICs) each having a plurality of gamma buffers, the method comprising:
forming routing lines to route a plurality of gamma voltages;
connecting the routing lines to output terminals of the gamma buffers;
applying the reset gamma voltage to the gamma buffer of selected SDIC after selecting the SDIC in which the gamma voltage
is required to be reset in consideration of heating values of the SDICs, and

changing connection between a routing line corresponding to the selected gamma buffer and a tap point of a resistor string
of the SDIC such that the connection corresponds to the reset gamma voltage.

US Pat. No. 9,730,286

CONTROL CIRCUIT AND METHOD FOR GENERATING VOLTAGE FOR LIGHT EMITTING DIODE LIGHTING DEVICE

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus, which controls light emissions of a plurality of LED groups driven by a
rectified voltage, comprising:
a transmission circuit configured to transmit a voltage lowered from the rectified voltage by one or more LEDs included in
the LED groups;

a voltage regulation circuit configured to regulate the lowered voltage;
a peripheral circuit configured to comprise a sensor board configured to output a dimming control signal in response to one
or more of an internal sensing signal or an external control signal;

a dimming adjusting circuit having a resistance value which is varied in response to the dimming control signal and configured
to control an amount of current in a current path in response to the dimming control signal; and

a current control circuit configured to provide the current path corresponding to sequential light emissions of the LED groups,
wherein the current control circuit comprises a sensing resistor configured to maintain a connection state to the current
path and provide a sensing voltage corresponding to a current flowing through the current path, and changes a formation position
of the current path by comparing the sensing voltage to reference voltages set to the respective LED groups, and

wherein the voltage regulation circuit provides an output as an operating voltage of the peripheral circuit.

US Pat. No. 9,118,324

DRIVER IC CHIP AND PAD LAYOUT METHOD THEREOF

SILICON WORKS CO., LTD., ...

1. A driver IC chip comprising:
an input pad section disposed in a longitudinal direction at one of two longitudinal sides of the driver IC chip;
an output pad section disposed in the longitudinal direction at the other of two longitudinal sides of the driver IC chip;
a first power pad section disposed between an end portion of the input pad section in the longitudinal direction and an end
portion of the driver IC chip corresponding to the end portion of the input pad section, and at an area closer to the end
portion of the input pad section than the end portion of the driver IC chip corresponding to the end portion of the input
pad section;

a second power pad section disposed between another end portion of the input pad section in the longitudinal direction and
an end portion of the driver IC chip corresponding to the another end portion of the input pad section, and at an area closer
to the another end portion of the input pad section than the end portion of the driver IC chip corresponding to the another
end portion of the input pad section;

a third power pad section disposed between an end portion of the output pad section in the longitudinal direction and an end
portion of the driver IC chip corresponding to the end portion of the output pad section, and at an area closer to the end
portion of the output pad section than the end portion of the driver IC chip corresponding to the end portion of the output
pad section; and

a fourth power pad section disposed between another end portion of the output pad section in the longitudinal direction and
an end portion of the driver IC chip corresponding to the another end portion of the output pad section, and at an area closer
to the another end portion of the output pad section than the end portion of the driver IC chip corresponding to the another
end portion of the output pad section.

US Pat. No. 9,412,308

SAMPLE AND HOLD CIRCUIT AND SOURCE DRIVER INCLUDING THE SAME

SILICON WORKS CO., LTD., ...

1. A sample and hold circuit comprising:
a main sample and hold circuit configured to sample and hold pixel information of an organic light emitting diode (OLED) cell,
and output a first output signal; and

a dummy sample and hold circuit configured to sample and hold a reference voltage in synchronization with the main sample
and hold circuit, and output a second output signal for offsetting a switching noise signal contained in the first output
signal,

wherein the main sample and hold circuit comprises:
a main sampling capacitor configured to sample the pixel information; and
a main charge sharing unit configured to hold the sampled pixel information sampled by the main sampling capacitor.

US Pat. No. 9,129,551

DRIVING CIRCUIT OF DISPLAY APPARATUS AND DRIVING CHIP

SILICON WORKS CO., LTD., ...

1. A driving circuit of a display apparatus, comprising:
driving chips configured to perform a timing control function and a source driving function, perform communication with a
memory, and obtain driving information of a display panel,

wherein the driving chips sequentially execute an operation of transmitting a first enable signal in one direction when communication
with the memory is performed and is normally completed in an initialization stage,

wherein a final stage driving chip among the driving chips transmits a second enable signal in the other direction opposite
to the one direction, generates image data, and transmits the generated image data to the display panel when communication
with the memory is performed and is normally completed after the first enable signal is received, and

wherein driving chips other than the final stage driving chip generate image data and transmit the generated image data to
the display panel when the second enable signal is received.

US Pat. No. 9,530,356

SOURCE DRIVER OF DISPLAY DEVICE

SILICON WORKS CO., LTD., ...

4. A source driver comprising:
a sample and hold circuit storing pixel information inputted from an OLED cell of a display panel in response to a sampling
mode and outputting the stored pixel information in response to an amplification mode;

an amplifier having an in at terminal at which a first offset voltage is formed, and outputting a second offset voltage corresponding
to the first offset voltage in response to the sampling mode and amplifying an output signal of the sample and hold circuit,
applied to the input terminal through a transmission line, in response to the amplification mode;

an offset voltage storage unit storing the second offset voltage in response to the sampling mode, and provide the second
offset voltage to the input terminal of the amplifier in response to the amplification mode;

a feedback capacitor storing a voltage for amplification in response to the sampling mode, and provide a feedback path for
the amplifier in response to the amplification mode; and

a first switch group having a plurality of switches which isolates the sample and hold circuit and the amplifier from each
other, couples the input terminal and an output terminal of the amplifier, and operates the amplifier as a unity buffer, in
response to the sampling mode.

US Pat. No. 9,288,862

LED LIGHTING APPARATUS AND CONTROL CIRCUIT THEREOF

SILICON WORKS CO., LTD., ...

1. An LED lighting apparatus comprising:
a power supply unit configured to convert an AC voltage and provide a rectified voltage;
a light source configured to include N light emitting diode (LED) channels (N is a natural number) including at least one
LED; and

a current control circuit configured to divide a varying width of the rectified voltage into N periods in response to light-emitting
voltages for each LED channel, detect current flowing in the LED channels corresponding to the period, generate a plurality
of reference voltages having different levels corresponding to the LED channels, reflect a variation of the rectified voltage
to the plurality of the reference voltages, and control the light source to emit light by controlling amount of the current
flowing in the LED channels by comparing a current detection voltage corresponding to the detected current with a reference
voltage reflecting the variation of the rectified voltage.

US Pat. No. 9,082,355

CIRCUIT FOR DRIVING LCD DEVICE AND DRIVING METHOD THEREOF

SILICON WORKS CO., LTD., ...

1. A liquid crystal display driving circuit, which supplies data and scan pulses to intersections between data and gate lines
of a liquid crystal panel and displays the liquid crystal panel, comprising:
a timing controller configured to receive video data and divide the received data into even-numbered data and odd-numbered
data, and comprising a plurality of integrated multiplexers which directly exchange in advance of transmission to each channel
the divided data between adjacent channels in response to a current polarity control signal and transmit the exchanged data
to first latches of respective channels; and

a data driver provided to each channel through which the video data are outputted to a data line, and configured to receive
the exchanged data from the integrated multiplexers of the timing controller, latch the exchanged data using the first latches
in response to a first latch enable signal, and output the data to the data line,

wherein the timing controller comprises:
a buffer configured to receive and temporarily store the video data;
a data register configured to divide the received video data into the even-numbered data and the odd-numbered data; and
the plurality of integrated multiplexers configured to recognize the current polarity control signal through a current load
signal, exchange in advance the divided data between the adjacent channels in response to the current polarity control signal,
and transmit the exchanged data to the first latches of the data driver; and

wherein the data driver comprises:
the first latches configured to sequentially sample the video data exchanged by the integrated multiplexers in response to
the first latch enable signal; and

second latches configured to latch the data inputted from the first latches and output the latched data to data lines in response
to a second latch enable signal, wherein the second latches output the latched data to the data lines by supplying an even-numbered
data output and an odd-numbered data output to the data lines according to polarity determined by the current polarity control
signal in synchronism with a next load signal, wherein there is one horizontal synchronizing signal (1H time) difference between
the current load signal and the next load signal.

US Pat. No. 9,532,412

LIGHTING APPARATUS CAPABLE OF REDUCING FLICKER

SILICON WORKS CO., LTD., ...

1. A lighting apparatus which uses a rectified voltage, comprising:
a lighting unit comprising a plurality of LEDs configured to emit light in response to the rectified voltage and divided into
a plurality of LED groups;

a flicker control circuit configured to secure a charge voltage by performing a first charge operation based on a magnitude-limited
current using the rectified voltage which is equal to or more than a first level and provided through one or more LEDs, and
provide the charge voltage to an input terminal of the lighting unit through a first discharge operation, in response to the
rectified voltage less than a second level lower than the first level; and

a control unit configured to provide a current path for light emission of the lighting unit,
wherein the lighting unit comprises one or more capacitors connected in parallel to the respective LED groups and configured
to perform a second charge or discharge operation,

wherein the flicker control circuit comprises:
a first path element configured to form a first path for the first charge operation in response to the rectified voltage which
is equal to or more than the first level and provided through one or more LEDs;

a current circuit configured to provide a current when the current is introduced through the first element;
a second path element configured to form a second path for the first discharge operation in response to the rectified voltage
less than the second level; and

a charge and element configured to perform the first charge operation using the current and perform the first discharge operation
through the second path.

US Pat. No. 9,311,874

POWER CONNECTION STRUCTURE OF DRIVER IC CHIP

SILICON WORKS CO., LTD., ...

1. A power connection structure of a driver integrated circuit chip, the driver integrated circuit chip comprising:
a chip-on-glass type mounting to a display panel of a display device;
a first side;
a second side opposite the first side along a transverse length;
a first power terminal unit disposed within the driver integrated circuit chip adjacent the first side;
a second power terminal unit disposed within the driver integrated circuit chip adjacent the second side and spaced from the
first power terminal unit;

a dummy power terminal unit disposed within the driver integrated circuit chip between the first power terminal unit and the
second power terminal unit; and

a plurality of routing lines extending between the first power terminal unit and the dummy power terminal unit and extending
between the second power terminal unit and the dummy terminal unit, the plurality of routing lines disposed completely within
the driver integrated circuit chip, wherein the first power terminal unit is directly connected to the dummy power terminal
unit through at least one of the plurality of routing lines, and the second power terminal unit is directly connected to the
dummy power terminal unit through at least one of the plurality of routing lines.

US Pat. No. 9,337,839

PRE-DRIVER AND POWER CIRCUIT INCLUDING THE SAME

SILICON WORKS CO., LTD., ...

1. A pre-driver comprising:
a level shifter including first and second output terminals which respectively output first and second pulses to have a phase
difference, the first and second pulses respectively having first and second voltages; and

a gate pulse modulator including a first switch to which a reference voltage having a level between the first voltage and
the second voltage is applied and first second and second second switches which are commonly connected to the first switch,
the first second switch being connected to the first output terminal and the second second switch being connected to the second
output terminal, the gate pulse modulator being configured to provide the reference voltage to the first output terminal through
the first switch and the first second switch in correspondence to shift of the first pulses, and provide the reference voltage
to the second output terminal through the first switch and the second second switch in correspondence to shift of the second
pulses,

wherein modulated gate pulses generated as the first and second pulses are modulated by the reference voltage are outputted.

US Pat. No. 9,320,100

LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A lighting apparatus comprising:
a power conversion circuit configured to convert a rectified voltage into a driving voltage using a transformer;
a lamp configured to receive the driving voltage;
a dimming control circuit configured to provide a dimming control signal corresponding to an external control signal and operate
using an operating voltage obtained by converting the level of the driving voltage;

a driving control circuit configured to control the power conversion circuit in response to a result obtained by monitoring
the power conversion and the dimming control signal; and

a driving voltage control circuit configured to control the dimming control signal for controlling the driving voltage so
that the operating voltage is maintained at a predetermined level or more.

US Pat. No. 9,587,818

LED LIGHTING APPARATUS WITH IMPROVED HEAT RADIATION PROPERTY

SILICON WORKS CO., LTD., ...

1. An LED lighting apparatus comprising:
a light source unit comprising a plurality of LED groups each having one or more LEDs; and
a driving unit configured to provide a current path corresponding to light emission of the light source unit,
wherein the light source unit and the driving unit are arranged on the same substrate so as to be separated from each other,
and

among the plurality of LED groups, the LED group having the largest heat value is arranged farthest away from the driving
unit, compared to the other LED groups.

US Pat. No. 9,516,707

LED LIGHTING APPARATUS, CURRENT REGULATOR FOR THE LED LIGHTING APPARATUS, AND CURRENT REGULATION METHOD OF THE LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. An LED lighting apparatus, comprising:
a converter for outputting a DC voltage obtained by converting a rectified voltage through a switching operation according
to a driving pulse;

an LED lighting for emitting light using the DC voltage;
a current regulator for comparing a reference pulse to a signal obtained by adding up a feedback signal corresponding to a
current flowing through the converter by the switching operation according to the driving pulse and a dimming control signal
corresponding to a control signal of a peripheral circuit module, generating the driving pulse having a variable pulse width
as the comparison result, and switching an operation of the converter using the driving pulse; and

the peripheral circuit module for simultaneously receiving the DC voltage for the LED lighting, operating according to an
operating voltage obtained by regulating the DC voltage, and providing the control signal for controlling dimming of the LED
lighting, wherein the peripheral circuit module includes a sensor for sensing an exterior environment, and the control signal
having a pulse width varied with a result of the sensing by the sensor.

US Pat. No. 9,508,321

SOURCE DRIVER LESS SENSITIVE TO ELECTRICAL NOISES FOR DISPLAY

SILICON WORKS CO., LTD., ...

1. A source driver for a display apparatus insensitive to power noise, which sets a generation period of control signals for
controlling an image of one frame to be outputted through a plurality of image lines as a power noise generation period, periodically
sets the power noise generation period in units of one frame, forcibly decides an internal operation state as normality in
the power noise generation period, and operates insensitively to the power noise.

US Pat. No. 9,361,843

INPUT BUFFER CIRCUIT AND GATE DRIVER IC INCLUDING THE SAME

SILICON WORKS CO., LTD., ...

1. An input buffer circuit, comprising:
a first input buffer configured to comprise two or more inverters coupled in multiple stages;
a second input buffer configured to comprise two or more inverters;
a transfer circuit configured to transfer an input signal to any one of the first input buffer and the second input buffer
in response to an external selection signal; and

an output circuit configured to select the first input buffer or the second input buffer to which the input signal has been
transferred in response to the selection signal and output a signal received from the first input buffer or the second input
buffer,

wherein center values of input voltages to first inverters of the first input buffer and the second input buffer are differently
set in order to recognize the input signals of different voltage domains,

wherein the center value of the input voltage to the first inverter of the second input buffer to which the input signal is
applied is set to be lower than center values of input voltages of remaining inverters following the first inverter, and

wherein the first inverter of the second input buffer is configured to receive a low-voltage signal and output a high-voltage
domain.

US Pat. No. 9,583,957

CELL BALANCING INTEGRATED CIRCUIT, CELL BALANCING SYSTEM, AND CELL BALANCING METHOD

SILICON WORKS CO., LTD., ...

1. A cell balancing integrated circuit comprising:
a first path provide block configured to provide a first energy delivery path having a unidirectional property in which energy
is delivered from at least one battery cell to at least one first energy storage element, and

a second path provide block configured to provide a second energy delivery path having a unidirectional property in which
energy is delivered from at least the one first energy storage element to a second energy storage element.

US Pat. No. 9,585,215

LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A lighting apparatus comprising:
a lighting unit comprising LEDs divided into a plurality of LED groups connected in series, the plurality of LED groups being
divided into a first lighting group and a second lighting group, and configured to emit light using a rectified voltage;

a first driver configured to provide a first current path corresponding to a change of the rectified voltage to each of the
LED groups included in the first lighting group;

a first sensing resistor connected to the first current path;
a second driver configured to provide a second current path corresponding to a change of the rectified voltage to each of
the LED groups included in the second lighting group; and

a second sensing resistor connected between the second current path and the first sensing resistor,
wherein the first driver compares first reference voltages obtained by dividing a difference between a constant voltage and
a first ground voltage to a first sensing voltage applied to the first sensing resistor, and regulates a current flow between
the first sensing resistor and the LED groups included in the first lighting group, in order to provide the first current
path, and

the second driver compares second reference voltage obtained bv dividing a difference between the constant voltage and a second
ground voltage to a second sensing voltage applied to the second sensing resistor, and regulates a current flow between the
second sensing resistor and the LED groups included in the second lighting group, in order to provide the second current path.

US Pat. No. 9,572,220

LED LIGHTING APPARATUS AND CONTROL CIRCUIT THEREOF

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus, which controls a lamp divided into a plurality of LED groups to emit light
in response to a rectified voltage outputted through a dimmer using a triac, the control circuit comprising:
a reference voltage supply unit configured to provide reference voltages having different levels to the respective LED groups;
a flicker control unit configured to provide a control signal in response to the rectified voltage having a low angle corresponding
to a preset low angle region and equal to or less than a preset level; and

a plurality of switching circuits configured to selectively provide a current path in response to light emission of the LED
groups, perform current regulation for selectively providing the current path by comparing the reference voltages of the respective
LED groups to a current sensing voltage corresponding to the current amount of the current path, and turn off the current
path in response to the control signal,

wherein the control circuit controls flicker caused by a change of the rectified voltage which occurs due to the triac.

US Pat. No. 9,536,488

GAMMA VOLTAGE SUPPLY CIRCUIT AND METHOD AND POWER MANAGEMENT IC

SILICON WORKS CO., LTD., ...

1. A gamma voltage supply circuit comprising:
an internal voltage generator configured to generate an internal voltage which is boosted, by using an external voltage, and
supply the internal voltage to a current control element; and

a digital-to-analog converter configured to generate a regulating voltage by regulating the internal voltage through the current
control element, generate gamma voltages corresponding to a plurality of channels, by using the regulating voltage, and supply
the gamma voltages to one or more selected channels,

wherein the digital-to-analog converter comprises the current control element comprising a MOS transistor, and
wherein the current control element is configured to regulate the internal voltage supplied from the internal voltage generator
in response to an output current, and output the regulating voltage,

wherein the digital-to-analog converter further comprises:
a comparison circuit configured to compare a reference voltage and a feedback voltage, and supply the output current corresponding
to a result of the comparison to the current control element; and

a sensing circuit configured to sense the regulating voltage outputted from the current control element, and supply the feedback
voltage corresponding to a result of the sensing to the comparison circuit.

US Pat. No. 9,653,993

SIGNAL CONTROL CIRCUIT AND SWITCHING APPARATUS FOR INCREASED CURRENT CONTROL

Silicon Works Co., Ltd., ...

1. A switching apparatus comprising:
a switch for controlling a current flowing through an inductive element;
a monitoring node connected with the switch; and
a signal control circuit, connected with the monitoring node, for turning on/off the switch,
wherein the signal control circuit comprises:
an integrator for generating a comparison voltage by integrating a difference between a monitoring voltage of the monitoring
node and a first reference voltage; and

a comparator for generating a reset signal by comparing the comparison voltage with a second reference voltage,
wherein the signal control circuit turns off the switch by using the reset signal, and the integrator comprises:
a resistor unit;
a capacitor unit; and
a calibrator for adjusting at least one of a resistance of the resistor unit and a capacitance of the capacitor unit and allowing
a peak value of the comparison voltage to fall within a target range, and

wherein the comparator compares the comparison voltage with the second reference voltage and generates a reset signal when
the comparison voltage becomes substantially equal to the second reference voltage.

US Pat. No. 9,625,932

SWITCHING MODE CONVERTER HAVING 100% DUTY CYCLE MODE AND METHOD FOR CONTROLLING THEREOF

Silicon Works Co., Ltd., ...

1. A switching mode converter, comprising:
a switching element connected between one side of a first semiconductor device and an input power, wherein another side of
the first semiconductor device is connected to a ground power;

a bootstrap capacitor configured such that one side of the bootstrap capacitor is connected to the one side of the first semiconductor
device;

a control unit configured to control a first output current or a first output voltage of a common charge pump provided to
the switching element and the bootstrap capacitor in order to control a charging state of the bootstrap capacitor and a gate
voltage of the switching element; and

a current source connected between an output terminal of the common charge pump and other side of the bootstrap capacitor,
wherein the control unit controls a second output current of the current source based on:

a charging voltage of the bootstrap capacitor; and
a relationship between the charging voltage of the bootstrap capacitor and the second output current of the current source
wherein the relationship requires an increased level of the second output current of the current source when the charging
voltage of the bootstrap capacitor decreases.

US Pat. No. 9,620,053

THRESHOLD VOLTAGE SENSING CIRCUIT OF ORGANIC LIGHT-EMITTING DIODE DISPLAY DEVICE

SILICON WORKS CO., LTD., ...

1. A threshold voltage sensing circuit of an OLED display device including an OLED, comprising:
a sampling capacitor configured to sample a threshold voltage of the OLED;
a charge-share capacitor configured to charge-share the voltage sampled in the sampling capacitor;
an amplification unit configured to amplify the threshold voltage outputted from the charge-share capacitor;
a sensing switch coupled between one terminal of the sampling capacitor and a sensing voltage input terminal to which the
threshold voltage is inputted;

a second reference voltage switch coupled between the other terminal of the sampling capacitor and one terminal of a second
reference voltage source for supplying a second reference voltage;

a charge-share switch having one terminal coupled to the one terminal of the sampling capacitor;
a first reference voltage switch having one terminal coupled to the other terminal of the sampling capacitor and the other
terminal commonly coupled to a first reference voltage source for supplying the first reference voltage and the other terminal
of the charge-share capacitor;

a charge-sharing operation switch having one terminal coupled to the one terminal of the charge-share capacitor and the other
terminal coupled to the other terminal of the charge-share switch; and

a comparator configured to compare a variation range of the threshold voltage to a reference value,
wherein when the variation range of the threshold voltage is larger than the reference value, the threshold voltage is stored
in the sampling capacitor and the charge-share capacitor to make the variation range of the threshold voltage smaller than
the reference value, and then transmitted to the amplification unit,

wherein when the variation range of the threshold voltage is smaller than the reference value, the threshold voltage is stored
in the sampling capacitor.

US Pat. No. 9,730,287

LIGHTING APPARATUS AND DIMMING REGULATION CIRCUIT THEREOF

SILICON WORKS CO., LTD., ...

1. A dimming regulation circuit of a lighting apparatus, comprising:
a path control circuit configured to comprise a first switching element which is switched depending on any one of a first
rectified voltage which deviates from a predetermined level and the first rectified voltage which has a low angle equal to
or less than a specific level and provide determination information by the first switching element;

a first transmission circuit configured to comprise a second switching element and provide a second rectified voltage obtained
by stabilizing the first rectified voltage to a lamp including an LED through the second switching element which switches
to provide the second rectified voltage corresponding to the first rectified voltage according to the determination information
in response to the switching state of the first switching element; and

a second transmission circuit configured to refer to the second rectified voltage provided from the first transmission circuit,
and provide the second rectified voltage obtained by bypassing the first rectified voltage to the lamp complementarily with
the first transmission circuit.

US Pat. No. 9,742,404

LEVEL SHIFTER CIRCUIT WITH IMPROVED TIME RESPONSE AND CONTROL METHOD THEREOF

Silicon Works Co., Ltd., ...

1. A level shifter circuit, comprising:
an output stage circuit of a level shifter comprising a first pass switch configured to transfer a voltage level of a first
power supply of the level shifter to an output node, and a second pass switch connected between a second power supply and
the first pass switch; and

a booster circuit configured to accelerate a switching operation of the level shifter by accelerating a time response during
a turning on or off operation of the first pass switch based on charge sharing via a first switch between a first capacitor
and a parasitic capacitance of a control node of the first pass switch,

wherein a node on one side of the first capacitor of the booster circuit has a voltage at a first voltage level when an output
signal of the level shifter is in a first steady state;

the first voltage level has an inverted polarity of a voltage of the control node of the first pass switch in the first steady
state; and

the first switch of the booster circuit connects the node on the one side of the first capacitor with the control node of
the first pass switch when the switching operation that allows the output signal to depart from the first steady state is
initiated.

US Pat. No. 9,883,559

LIGHT EMITTING DIODE LIGHTING DEVICE

SILICON WORKS CO., LTD., ...

1. An LED lighting apparatus comprising:
a power supply unit configured to provide a rectified voltage;
a first light emitting module comprising a first lamp including
a plurality of LEDs divided into a plurality of LED groups, a first current control unit configured to provide a first current
path for light emission of the first lamp, and a first current sensing resistor applied the first current path; and

a second light emitting module comprising a second lamp including a plurality of LEDs divided into a plurality of LED groups,
a second current control unit configured to provide a second current path for light emission of the second lamp, and a second
current sensing resistor applied the second current path,

wherein the rectified voltage is applied across the first lamp, the first current control unit, the first current sensing
resistor, the second lamp, the second current control unit, and the second current sensing resistor connected in series,

the plurality of LED groups of the first light emitting module and the second light emitting module are respectively sequentially
turned on/off,

a common current path includes the first current path and the second current path connected in series through the first current
sensing resistor and the second lamp, and

a first LED group of the first lamp and a second LED group of the second lamp emit light at the same time in response to a
predetermined level of the rectified voltage.

US Pat. No. 9,793,797

SWITCHING APPARATUS AND CONTROL METHOD THEREOF

SILICON WORKS CO., LTD., ...

1. A switching apparatus including an internal circuit using an inductive element, comprising:
a switch that regulates a current of the inductive element; and
a signal control circuit that arithmetically calculates a turn-off time point of the switch by using a monitoring voltage
corresponding to the current of the inductive element, a sampling voltage of the monitoring voltage, and a reference voltage
corresponding to a target average current of the inductive element, and controls the switch,

wherein the signal control circuit samples a difference between die monitoring voltage and the reference voltage at a turn-on
time point of the switch, samples a sum of the difference and the reference voltage as a first voltage at a time point which
a predetermined time has passed based on the turn-on time point of the switch, samples the monitoring voltage as a second
voltage from the time point at which the predetermined time has passed, and turns off the switch when the second voltage reaches
the level of the first voltage.

US Pat. No. 9,722,437

BALANCING DEVICE AND METHOD

SILICON WORKS CO., LTD., ...

1. A balancing device for balancing for an energy storage module comprising a plurality of energy storage units connected
in series between a first connection terminal and a second connection terminal, the device comprising:
a transformer comprising a primary winding and a secondary winding; and
a switch network selectively connecting at least one of the plurality of energy storage units to at least one of the primary
and secondary windings of the transformer,

wherein the switch network comprises:
a first cell switch unit having one terminal coupled one to one to odd-numbered nodes formed between the first connection
terminal and the second connection terminal and another terminal commonly coupled to form a first common node;

a second cell switch unit having one terminal coupled one to one to even-numbered nodes formed between the first connection
terminal and the second connection terminal and another terminal commonly coupled to form a second common node; and

a polarity switch unit for selectively connecting the first common node and the second common node to one terminal or another
terminal of the primary winding, respectively, between the transformer and the first and second cell switch units.

US Pat. No. 9,986,616

LAMP CONTROL DEVICE

SILICON WORKS CO., LTD., ...

1. A lamp control device comprising:a lamp including an LED module which has a plurality of LED channels; and
a controller configured to detect respective feedback voltages of the plurality of LED channels, determine when at least any one feedback voltage among the feedback voltages is retained to be lower than a predetermined reference voltage and a generation count of an over voltage protection signal reaches a predetermined reference count, an LED channel corresponding to the feedback voltage, as an open, and drive the LED channel determined as the open under a channel protection mode,
wherein, when the channel protection mode is driven, the controller excludes the feedback voltage corresponding to the LED channel determined as the open from regulation of an output voltage, monitors the feedback voltage of the LED channel determined as the open, and returns the LED channel to a normal operation when the feedback voltage is detected to be normal.

US Pat. No. 9,961,762

CIRCUIT BOARD FOR COF PACKAGE

SILICON WORKS CO., LTD., ...

1. A circuit board for COF (Chip on Film) package, comprising:a base film defined a core block region overlapping a predetermined location of a core block in an integrated circuit and having the same area as or larger area than the core block;
first routing patterns formed on the base film; and
a first block pattern covering the core block region for preventing an influence of coupling noise on the core block,
wherein the first routing patterns are formed outside the first block pattern at the same layer as the first block pattern.

US Pat. No. 9,961,732

CONTROL CIRCUIT FOR LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit for a lighting apparatus which includes a plurality of LED groups connected in series to emit light using a rectified voltage, the control circuit comprising:a first monitoring unit configured to provide a monitoring result as a first control signal, the monitoring result being obtained by monitoring the rectified voltage;
a second monitoring unit configured to provide a monitoring result as a second control signal, the monitoring result being obtained by monitoring an output voltage of a specific LED group among the LED groups;
a driving circuit configured to provide a current path for light emission to one of the plurality of LED groups by comparing an internal reference voltage and a sensing voltage, receive a control signal obtained by adding up the first and second control signals, and control heat generated by the driving current by adjusting the amount of driving current in the current path in response to the control signal; and
a sensing resistor connected to the current path and configured to provide the sensing voltage.

US Pat. No. 9,955,543

LAMP CONTROL DEVICE AND CONTROL METHOD THEREFOR

SILICON WORKS CO., LTD., ...

1. A lamp control device comprising:a lamp comprising an LED module having a plurality of LED channels;
a converter configured to receive a voltage corresponding to a turn signal, convert the voltage into an output voltage and internal voltage, and supply the output voltage to the LED module; and
a controller configured to start counting a preset delay time when the internal voltage is supplied from the converter, and control the plurality of LED channels to sequentially light up at intervals of the delay time.

US Pat. No. 9,842,560

SOURCE DRIVER AND DISPLAY DEVICE INCLUDING THE SAME

SILICON WORKS CO., LTD., ...

1. A source driver comprising:
a gamma voltage generation unit comprising gamma buffers configured to generate gamma voltages by buffering reference voltages
received, wherein a part of the gamma buffers enter a power down mode in response to first power down signals being enabled,
and the other the gamma buffers generate at least one of the gamma voltages in response to the first power down signals being
disabled;

an output buffer unit configured to provide a data voltage to a output terminal, and enter the power down mode in response
to a second power down signal being enabled; and

a selection unit configured to select and provide one of the gamma voltages provided from the gamma voltage generation unit
to the output terminal.

US Pat. No. 9,958,986

TOUCH SENSING APPARATUS

SILICON WORKS CO., LTD., ...

1. A touch sensing apparatus comprising:a high pass filter configured to decide a second cut-off frequency by varying the resistance of at least one of a first resistor which transfers a touch sensing signal outputted from a sensing electrode to a first amplifier and is implemented with a variable resistor and a second resistor which forms a first feedback loop for the first amplifier and is implemented with the variable resistor, and output a first output signal obtained by filtering a frequency component equal to or lower than the second cut-off frequency in the touch sensing signal, and
a low pass filter comprising a sampling switch which switches transfer of the first output signal, a third resistor which transfers the first output signal having passed through the sampling switch to a second amplifier and is implemented with the variable resistor, and a feedback capacitor which forms a second feedback loop for the second amplifier and is implemented with a variable capacitor, and configured to sample the first output signal during a sampling period, decide a third cut-off frequency by varying at least one of the resistance of the third resistor and the capacitance of the feedback capacitor, and output a second output signal obtained by filtering a frequency component equal to or higher than the third cut-off frequency in the first output signal,
wherein the sampling period is maintained for a second time from a time point delayed by a first time based on a transition time point of a driving signal applied to a driving electrode and is periodically changed with reference to the second output signal, and
wherein the time point is later than a start time of the first output signal outputted from the high pass filter.

US Pat. No. 10,085,313

LIGHTING APPARATUS AND DRIVING CIRCUIT INCLUDING FREQUENCY DITHERING AND SLOPE COMPENSATION

SILICON WORKS CO., LTD., ...

1. A lighting apparatus that provides an output voltage to a lighting load, comprising:a converter configured to generate the output voltage using a driving signal; and
a driving circuit configured to provide the driving signal, and spread the frequency of the driving signal by performing frequency dithering on the driving signal while changing the shape of an oscillation signal.

US Pat. No. 9,984,655

APPARATUS AND METHOD FOR TRANSMITTING DISPLAY SIGNAL HAVING A PROTOCOL INCLUDING A DUMMY SIGNAL AND A CLOCK SIGNAL

SILICON WORKS CO., LTD., ...

9. A method for transmitting a display signal, comprising:receiving a last bit of image data;
providing a dummy signal matching a same logic level as the last bit of image data, wherein a level transition does not occur between the dummy signal and the last bit of image data;
generating a clock signal to have a level to which the dummy signal transitioned, such that the clock signal forms a periodic edge; and
outputting a display signal, in which the dummy signal and the clock signal are sequentially embedded between the image data, to a receiver.

US Pat. No. 9,913,337

CONTROL CIRCUIT OF LIGHT EMITTING DIODE LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A control circuit of an LED lighting apparatus which includes a plurality of LED groups to emit light according to a rectified
voltage, the control circuit comprising:
a rectified voltage sensing unit configured to sense the rectified voltage and provide a sensing signal; and
a control unit configured to compare reference voltages to a current sensing voltage corresponding to a current amount based
on light emission of the LED groups, the reference voltages being allocated to the respective LED groups and having a level
controlled in response to the sensing signal, and provide a current path corresponding to the light emitting states of the
LED groups,

wherein the level of the reference voltages is controlled to be inversely proportional to variation of the rectified voltage
in order to secure uniform luminance by compensating for a non-uniformity of power, and

the current amount on the current path is controlled in response to the sensing signal.

US Pat. No. 10,013,936

GAMMA VOLTAGE GENERATION CIRCUIT OF SOURCE DRIVER

SILICON WORKS CO., LTD, ...

1. A gamma voltage generation circuit of a source driver, comprising:a plurality of high gamma buffers configured to receive high reference voltages and output high reference gamma voltages, respectively; and
a plurality of low gamma buffers configured to receive low reference voltages and output low reference gamma voltages, respectively,
wherein a positive region and a negative region are divided based on a ground voltage, a first low gamma buffer included in the low gamma buffers receives a first low reference voltage between the ground voltage and a virtual ground voltage in the positive region when a positive power supply voltage and a negative power supply voltage are asymmetrical to each other and outputs a first low reference gamma voltage, the high gamma buffers are operated in a first operating environment using a positive driving voltage and the ground voltage, the low gamma buffers excluding the first low gamma buffer are operated in a second operating environment using the ground voltage and a negative driving voltage, and the first low gamma buffer is operated in the first operating environment according to a gamma select signal in a first logic state corresponding to a case in which the first low reference voltage is between the ground voltage and the virtual ground voltage in the positive region, and operated in the second operating environment according to the gamma select signal in a second logic state corresponding to a case in which the first low reference voltage belongs to the negative region.

US Pat. No. 9,916,055

MULTI-CHIP TOUCH SYSTEM AND CONTROL METHOD THEREFOR

Silicon Works Co., Ltd., ...

1. A touch system for sensing proximity or a touch of an object for a touch panel in which a plurality of areas is divided,
the touch system comprising:
a first touch IC configured to generate touch data for a first area from a sensing signal received from first receiving electrodes
and a boundary receiving electrode; and

a second touch IC configured to generate touch data for a second area from a sensing signal received from second receiving
electrodes and the boundary receiving electrode,

wherein, when the first touch IC receives the sensing signal from the boundary receiving electrode, the second touch IC releases
the connection with at least one receiving electrode among the second receiving electrodes and releases the connection with
the boundary receiving electrode.

US Pat. No. 9,881,579

LOW NOISE SENSITIVITY SOURCE DRIVER FOR DISPLAY APPARATUS

SILICON WORKS CO., LTD., ...

13. A source driver for a display apparatus comprising:
at least one voltage terminal;
a circuit that comprises a clock recovery circuit including a clock processing unit and a delay circuit, which the delay circuit
is insensitive to a operation voltage margin as compared with the clock processing unit and receives a signal including a
clock signal and performs a preset operation by using the clock signal; and

a filter circuit that is connected between the voltage terminal of the source driver and the delay circuit, filters transfer
of power noise occurring in an interior or an exterior of the source driver to the delay circuit through the voltage terminal,
and prevents lock fail from occurring in the clock-data recovery circuit of the source driver by the power noise, wherein
an output of the filter circuit is provided through a voltage application node of the delay circuit.

US Pat. No. 9,983,732

TOUCH SENSING DEVICE CAPABLE OF SELECTIVELY ATTENUATING NOISE AND CONTROL DEVICE THEREOF

SILICON WORKS CO., LTD., ...

12. A control device of a touch sensing device comprising:a touch panel configured to output a received signal in response to a driving signal;
a touch sensing unit configured to attenuate a frequency of a preset frequency region from the received signal according to a sensing control signal, and output a sensing signal;
a touch panel driving unit configured to apply the driving signal to the touch panel according to a driving control signal; and
a control unit configured to provide the driving control signal for changing a phase of the driving signal to the touch panel driving unit, and provide the sensing control signal to the touch sensing unit,
wherein the touch sensing unit comprises:
an even multiple frequency attenuation unit configured to attenuate an even multiple frequency of the driving signal frequency by performing CDS on the received signal of the touch sensing unit;
an odd multiple frequency attenuation unit configured to attenuate an odd multiple frequency of the driving signal frequency by performing CDS on an output signal of the even multiple frequency attenuation unit; and
a selection unit configured to select any one of output signals of the even multiple frequency attenuation unit and the odd multiple frequency attenuation unit according to the sensing control signal, and output the selected signal as the sensing signal.

US Pat. No. 9,916,807

OUTPUT CIRCUIT AND SWITCHING CIRCUIT OF DISPLAY DRIVING DEVICE

SILICON WORKS CO., LTD., ...

1. An output circuit of a display driving device, comprising:
an output buffer unit configured to buffer a pair of first and second input signals having different polarities and output
a pair of first and second output signals; and

a switching unit configured to transmit the pair of first and second output signals to a pair of first and second output terminals
through a direct path or a cross path during an output period, and charge-share the pair of output terminals using a middle
voltage of a pull-up voltage and a pull-down voltage of the output buffer unit during a charge-sharing period,

wherein the switching unit comprises:
a first switching circuit configured to transmit the first output signal to the first terminal through first and second switches
coupled in series;

a second switching circuit configured to transmit the first output signal to the second terminal through third and fourth
switches coupled in series;

a third switching circuit configured to precharge a node between the third and fourth switches to the middle voltage at the
output period, the third and fourth switches being disabled when the first and second switches transmit the first output signal
to the first terminal; and

a fourth switching circuit configured to precharge a node between the first and second switches to the middle voltage at the
output period, the first and second switches being disabled when the third and fourth switches transmit the first output signal
to the second terminal.

US Pat. No. 10,013,903

SOURCE DRIVER INTEGRATED CIRCUIT AND GAMMA REFERENCE VOLTAGE GENERATOR

SILICON WORKS CO., LTD., ...

1. A source driver integrated circuit comprising:a latch circuit configured to store and output digital image data;
a gamma circuit that outputs a gamma reference voltage, the gamma circuit including a plurality of gamma amplifiers comprising a first gamma amplifier and a second gamma amplifier, the first gamma amplifier receiving an input voltage and outputting a first voltage based on the input voltage, and the second gamma amplifier outputting a second voltage based on the first voltage output by the first gamma amplifier, wherein a voltage offset output by the second gamma amplifier is delayed by a time period with respect to a voltage offset output by the first gamma amplifier;
a digital analog converter configured to convert the digital image data, which has been output from the latch circuit, to an analog voltage on the basis of the gamma reference voltage and to output the analog voltage; and
an output buffer configured to amplify and output the analog voltage.

US Pat. No. 10,051,695

LAMP CONTROL DEVICE

SILICON WORKS CO., LTD., ...

1. A lamp control device comprising:a converter configured to provide an output voltage and an internal voltage;
a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and
a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated by memory values which are set in correspondence to each of lamps of a vehicle.

US Pat. No. 10,008,922

SWITCHING POWER SUPPLY

SILICON WORKS CO., LTD., ...

1. A switching power supply comprising:an inductor connected to an input voltage terminal;
a first switch configured to form a first electrical path between the inductor and an output voltage terminal;
a second switch configured to form a second electrical path between the inductor and a ground voltage terminal;
a negative current sensor configured to sense an inductor current flowing through the first electrical path, and generate an over-current protection signal when the inductor current is sensed as a negative current equal to or more than a preset value; and
a controller configured to enable a discontinuous conduction mode (DCM) when the over-current protection signal is generated, and turn off the first switch and turn on the second switch, in response to the enabled DCM.

US Pat. No. 10,094,715

TEMPERATURE SENSOR CIRCUIT CAPABLE OF COMPENSATING FOR NONLINEAR COMPONENTS AND COMPENSATION METHOD FOR TEMPERATURE SENSOR CIRCUIT

Silicon Works Co., Ltd., ...

1. A temperature sensor circuit, comprising:a first temperature sensor module circuit configured to generate a first temperature voltage signal, having a positive correlation with temperature, based on a first reference current level;
a second temperature sensor module circuit configured to generate a second temperature voltage signal, having a positive correlation with the temperature, based on a second reference current level different from the first reference current level; and
an arithmetic operation circuit configured to generate an output signal as a voltage signal proportional to the temperature using the first temperature voltage signal and the second temperature voltage signal,
wherein the arithmetic operation circuit generates the output signal, from which components nonlinearly influenced by the temperature included in the first temperature voltage signal and the second temperature voltage signal have been eliminated, by performing an arithmetic operation on the first temperature voltage signal and the second temperature voltage signal.

US Pat. No. 10,089,945

DISPLAY DRIVING CIRCUIT AND DISPLAY DEVICE

SILICON WORKS CO., LTD., ...

1. A display driving circuit comprising:an output switch unit configured to directly or crossly transmit a pair of pixel driving signals to a pair of output terminals:
a charge sharing switch unit configured to connect the pair of output terminals with each other:
a control unit including level shifters, and configured to generate a first control signal for directly transmitting the pair of pixel driving signals to the pair of output terminals, generate a second control signal for crossly transmitting the pair of pixel driving signals to the pair of output terminals, and generate a third control signal for connecting the pair of output terminals with each other, the first to third control signals are level-shifted by the level shifters; and
a switch misoperation prevention unit configured to receive the first to third control signals from the control unit, generate first to third resultant signals for preventing misoperation of the output switch unit and the charge sharing switch unit by logically operating at least one or more of the first to third control signals and the second resultant signal, and provide a first to third resultant signals to the output switch unit and the charge sharing switch unit,
wherein the switch misoperation prevention unit provides the first control signal for directly transmitting the pair of pixel driving signals to the pair of output terminals as the first resultant signal to direct switches of the output switch unit, provides the second resultant signal generated by logically operating the first control signal and the second control signal for crossly transmitting the pair of pixel driving signals to the pair of output terminals to cross switches of the output switch unit, and provides the third resultant signal generated by logically operating the first control signal, the second resultant signal and the third control signal for connecting the pair of output terminals with each other to the charge sharing switch unit,
wherein the, switch misoperation prevention unit is configured to prevent first to third resultant signals from simultaneously having a same level corresponding to a turn-on state, when the first to third control signals level-shifted by the level shifters are received at the same level, and
wherein the switch misoperation prevention unit is further configured to prioritize sequentially from the first control signal to the third control signal and is configured to generate the first, to the third resultant signal, to ensure that a signal with a low priority is prevented from being turned on while a signal with a high priority is turned on,
wherein the switch misoperation prevention unit comprises:
a NOT gate buffering the first control signal and outputting the first resultant signal; a first NOR gate performing a NOR operation of the first control signal and an inverted signal of the second control signal and outputting the second resultant signal;
a second NOR gate performing a NOR operation of the first control signal, the second resultant signal, and an inverted signal of the third control signal and outputting the third resultant signal.

US Pat. No. 10,089,918

DISPLAY DEVICE

SILICON WORKS CO., LTD., ...

1. A display device comprising:a timing controller circuitry configured to generate an input signal having a clock signal embedded between data signals each including a pixel data packet and a control data packet, and provide the input signal to a plurality of source drivers; and
the plurality of source drivers configured to receive the input signal, sense pixel information from a display panel, and enabled to transmit the pixel information to the timing controller circuitry in response to unique information for identifying the plurality of source drivers contained in the control data packet, and configured to transmit the pixel information to the timing controller circuitry during an operation time corresponding to operation time information for determining the operation time contained in the control data packet,
wherein the respective plurality of source drivers comprises:
a sampling circuit configured to sense the pixel information from the display panel; and
an Analog-to-Digital Converter (ADC) configured to be enabled in response to the unique information in the control data packet and transmit the pixel information sensed from the display panel by the sampling circuit to the timing controller circuitry during the operation time, the operation time being determined by the operation time information in the control data packet.

US Pat. No. 10,204,589

SOURCE DRIVER HAVING LOW POWER CONSUMPTION AND DISPLAY DEVICE INCLUDING THE SOURCE DRIVER

SILICON WORKS CO., LTD., ...

11. A display device comprising a source driver coupled to a plurality of data lines of a display panel,wherein the source driver comprises:
a first output buffer enabled in response to a first power down signal disabled at a blank period of a display device, and coupled to a first output terminal, in order to provide a same voltage to a display panel at the blank period, wherein the blank period corresponds to a power down mode and the first power down signal is directly fed to the first output buffer;
a second output buffer disabled in response to a second power down signal enabled at the blank period, and coupled to a second output terminal, wherein the second power down signal is directly fed to the second output buffer;
a third output buffer enabled in response to the first power down signal disabled at the blank period, and coupled to a third output terminal different from the first and second output terminals, in order to provide another same voltage to the display panel at the blank period, wherein the first power down signal is directly fed to the third output buffer;
a fourth output buffer disabled in response to the second power down signal enabled at the blank period, and coupled to a fourth output terminal different from the first to third output terminals, wherein the second power down signal is directly fed to the fourth output buffer;
a first charge sharing switch coupled between the first and second output terminals corresponding to the first and second output buffers being driven in positive polarity in response to a switching signal at the blank period, wherein the switching signal is enabled when the second power down signal is enabled; and
a second charge sharing switch coupled between the third and fourth output terminals corresponding to the third and fourth output buffers being driven in negative polarity in response to the switching signal at the blank period,
wherein at the blank period, the first charge sharing switch connects the first and second output terminals to each other, the first output buffer provides the same voltage to the first and second output terminals and the second output buffer enters a power down mode, and
at the blank period, the second charge sharing switch connects the third and fourth output terminals to each other, the third output buffer provides the another same voltage to the third and fourth output terminals, and the fourth output buffer enters the power down mode.

US Pat. No. 10,219,336

LED LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. An LED lighting apparatus comprising:a rectifier circuit configured to output a rectified voltage;
a channel unit configured to provide a discharge current to an output terminal of the rectifier circuit when the rectified voltage is equal to or higher than a first level;
a first LED group connected to the rectifier circuit, and configured to emit light in response to the rectified voltage equal to or more than a second level which is higher than the first level;
a balancing resistor connected to an output terminal of the first LED group;
a balancing circuit configured to form a balancing path between the rectifier circuit and the balancing resistor and perform first regulation on a current of the balancing path, in response to the rectified voltage less than a third level which is higher than the second level;
a second LED group connected to the balancing resistor, and configured to emit light in response to the rectified voltage applied through any one of the balancing path and the first LED group;
a driver configured to selectively provide a current path for the turned-on first and second LED groups and the discharge path of the channel unit by comparing a sensing voltage and an internal reference voltage; and
a sensing resistor configured to sense a driving current outputted from the driver through the current path, and provide the sensing voltage.

US Pat. No. 10,201,048

LIGHTING APPARATUS

SILICON WORKS CO., LTD., ...

1. A lighting apparatus comprising:first and second lighting units comprising one or more LEDs, configured to emit light in response to a rectified voltage, and connected in series or parallel to each other;
a first driving circuit configured to provide a first current path corresponding to light emission of the first lighting unit, and regulate a first driving current of the first current path by comparing first reference voltages to a first sensing voltage of a first sensing resistor connected to the first current path;
a second driving circuit configured to provide a second current path corresponding to light emission of the second lighting unit, and regulate a second driving current of the second current path by comparing second reference voltages to a second sensing voltage of a second sensing resistor connected to the second current path;
a driving current control circuit including a third sensing resistor connected in serial to the first sensing resistor and a second switch connected in parallel to the third sensing resistor and configured to increase the first sensing voltage by controlling the second switch in order to reduce the first driving current when the first and second lighting units connect in series and the first lighting unit first emits light; and
a first switch configured to change the electrical serial or parallel connection between the first and second lighting units;
wherein the first and second lighting units emit light in response to the rectified voltage which is divided into first and second rectified voltages having different representative values, and are connected in parallel to each other in response to the first rectified voltage or connected in series to each other in response to the second rectified voltage higher than the first rectified voltage.

US Pat. No. 10,175,823

PANEL-DRIVING DEVICE AND TOUCH-DRIVING DEVICE

SILICON WORKS CO., LTD., ...

1. A panel-driving device for driving a panel including a plurality of pixels, a plurality of data lines, a plurality of gate lines, and a plurality of sensor electrodes, the panel-driving device comprising:a waveform generator configured to generate a sensor-driving waveform;
a touch-driving circuit configured to generate a sensor-driving signal according to the sensor-driving waveform and to supply the sensor-driving signal to at least one sensor electrode, and to generate a first sensor-driving auxiliary signal according to the sensor-driving waveform and to supply the first sensor-driving auxiliary signal to a sensor electrode adjacent to the at least one sensor electrode;
a data-driving circuit configured to generate a second sensor-driving auxiliary signal according to the sensor-driving waveform and to supply the second sensor-driving auxiliary signal to a data line; and
a coupling circuit configured to generate a third sensor-driving auxiliary signal of which a voltage has a difference of a coupling voltage from a voltage of the sensor-driving waveform, and to supply the third sensor-driving auxiliary signal to a gate-driving circuit that drives a gate line.