US Pat. No. 9,072,149

LED DRIVING DEVICE WITH OPEN CIRCUIT PROTECTION AND COLOR TEMPERATURE AND BRIGHTNESS ADJUSTMENT

Unity Opto Technology Co....

1. A light emitting diode (LED) driving device with open circuit protection and color temperature and brightness adjustment,
consisting of a dimming module, a rectification module, a conversion module, a control module and an output module, and the
control module including a control chip installed therein, electrically coupled to the conversion module and the LEDs, and
further electrically coupled to the output module through a transistor and a sensing resistor, characterized in that the LEDs
is divided into a plurality of strings, and at least one string is formed by coupling a plurality of blue light diodes in
series, and the remaining strings are formed by coupling a plurality of yellow light LEDs in series, and a cathode terminal
of at least one of the yellow light strings is coupled to a cathode terminal of the blue light string to form a node; and
the output module includes a switch which is a three-way element with two output terminals coupled to the blue light string
and the yellow light string respectively, and a power input pin of the control chip is electrically coupled to the node, such
that when the LEDs are open circuited by an abnormality, the voltage level at the node is lower than the working voltage of
the control chip, the control chip stops operating to produce the effect of protecting the whole circuit, and the switch is
switched to conduct the blue light string or the yellow light string to change the color temperature of the emitted light
of a lamp.

US Pat. No. 9,572,221

AUTO-SENSING DIMMING LAMP

Unity Opto Technology Co....

1. An auto-sensing dimming lamp, comprising a base, a plurality of LED light sources, a sensor and a lamp cover, and the LED
light sources and the sensor being installed at the base, and the lamp cover being covered onto the base and coupled to an
edge of the base for sealing the LED light sources and the sensor, and the auto-sensing dimming lamp, comprising:
a light pipe, installed at the lamp cover, and extended from the lamp cover towards the base, and an end of the light pipe
abutting against the sensor to guide an external ambient light to enter into the lamp cover and to be detected by the sensor;
and

a processor, installed at the base, and comprising:
a pass filter unit, electrically coupled to the sensor and the LED light sources for receiving a detected signal waveform
detected by the sensor and a driving voltage waveform of the LED light sources, wherein if a section of a level of the driving
voltage waveform equals to zero, the detected signal waveform corresponding to the section has a residual light level and
an ambient light level, and the residual light level is higher than the ambient light level, and the pass filter unit only
captures the ambient light level and eliminates the residual light level; and

a modulation unit, electrically coupled to the pass filter unit, for automatically adjusting a light emission status and driving
the LED light sources according to the information of the ambient light level.

US Pat. No. 9,485,824

PURELY RESISTIVE DIMMING CIRCUIT

Unity Opto Technology Co....

1. A purely resistive dimming circuit, being consisted of a dimming module, a conversion module and an output module, and
the conversion module being electrically coupled to the dimming module and the output module for converting an input voltage
received from the dimming module into an output current, and then outputting the output current from the output module to
at least one LED, characterized in that the LED comes with a plural quantity and the LEDs are divided into a first string
and a second string which are connected in series with each other, and the output module is comprised of a plurality of resistive
driving circuits, each driving circuit including a driving resistor and a current limiting resistor defined by a positive
temperature coefficient thermistor connected in series with each other, and each driving circuit is respectively electrically
coupled to an anode terminal of the first and second strings,
wherein the dimming module is comprised of a TRIAC and a bridge rectifier, and the conversion module is comprised of an energy
storing capacitor and a stable voltage resistor,

wherein the conversion module is directly connected to the output module via a single terminal,
wherein the stable voltage resistor and the energy storing capacitor are connected in parallel to each other, a terminal of
the energy storing capacitor is directly connected to an output terminal of the bridge rectifier, an another terminal of the
energy storing capacitor is directly connected to the stable voltage resistor.

US Pat. No. 9,435,491

LED LEAD FRAME AND LAMP THEREOF

Unity Opto Technology Co....

1. A light emitting diode (LED) lead frame, mounted onto a platform inside a lightbulb, and comprising a metal polarity substrate,
a metal retaining substrate and a casing for partially covering the metal polarity substrate and the metal retaining substrate,
characterized in that the metal retaining substrate is a sheet bent into a disposing portion and a carrying portion, and an
abutting surface of the disposing portion abuts the platform, and a portion of the carrying portion not covered by the casing
is provided for installing at least one LED chip, and an included angle ?1 is defined between the disposing portion and the carrying portion, and the metal polarity substrate is bent to form an included
angle ?2, and ?1=?2, and 93°??1=130°; and the casing has a support member formed on the casing and protruded in a direction opposite to the direction of
bending the metal retaining substrate, wherein the support member is a wedge shaped member, the casing further includes a
weight member formed on the casing and disposed at a position opposite to the support member,
wherein the casing includes a sucking member formed on the casing and disposed at a position opposite to the other end of
the disposing portion, and the sucking member is a wedge shaped member protruding in a direction toward a center of the platform
and has a sucking surface parallel to the abutting surface.

US Pat. No. 9,544,963

SELF-EXCITED TRIAC DIMMING CIRCUIT

Unity Opto Technology Co....

1. A self-excited TRIAC dimming circuit, consisting of a dimming module and at least one conversion module electrically coupled
to the dimming module for receiving an input voltage, converting the input voltage into a driving voltage, and supplying the
driving voltage to at least one LED to drive the LED to emit light, characterized in that the dimming module includes a power
factor controller installed therein, and the conversion module is a self-excited electronic isolation transformer and has
at least one output controller, and the conversion module is electrically coupled to the LED through the output controller,
and the output controller is provided for modulating the driving voltage to stabilize the overall circuit output power,
wherein the output controller is a current limiting resistor for receiving the driving voltage to stabilize the current flowing
into the LED,

wherein the dimming module and each of the at least one conversion module is connected via only one terminal respectively,
the conversion module includes a plurality of self-excited electronic isolation transformers electrically coupled to the LED
respectively through the current limiting resistor.

US Pat. No. 9,167,645

DRIVER CIRCUIT FOR IMPROVING LED FLICKERS

Unity Opto Technology Co....

1. A driver circuit for improving LED flickers, with a primary side regulating architecture and an isolation transformer,
comprising:
a transformer, having an input coil, an auxiliary coil, a driving coil, and a dimming coil, and the input coil being installed
at a primary side of the transformer, and the auxiliary coil being installed at a side of the input coil and disposed on a
primary side of the transformer, and the driving coil being installed at a secondary side of the transformer, and the dimming
coil being installed at a side of the driving coil and disposed on a secondary side of the transformer, and the input coil
and the driving coil being corresponsive to each other, and the auxiliary coil and the dimming coil being corresponsive to
each other, and the transformer having an effect of isolating a primary side signal and a secondary side signal;

a primary side regulating module, electrically coupled to the input coil, for inputting an input voltage to the input coil;
a feedback portion, electrically coupled to the auxiliary coil and the primary side regulating module, for generating a feedback
signal when the auxiliary coil receives an induction from the input coil, and transmitting the feedback signal to the primary
side regulating module to maintain the input voltage constant;

a driving module, electrically coupled to the driving coil, and having a rear end electrically coupled to a plurality of LEDs,
and the driving portion receiving a driving signal of the driving coil sensed by the input coil to drive the LEDs; and

a dimming portion, with the dimming coil electrically coupled to the driving module, for inputting a dimming signal with a
voltage falling within a range of 1V-10V, and outputting a regulating signal to the driving module; wherein when the input
voltage is outputted to the input coil, the auxiliary coil senses the feedback signal from the input coil and transmits the
feedback signal to the primary side regulating module to achieve the effect of maintaining the input voltage constant, and
when the dimming signal is inputted to the dimming portion, and the dimming portion outputs the regulating signal to the driving
module to produce a compensation, the LEDs are free of flickers.

US Pat. No. 9,418,523

INTELLIGENT WIRELESS DOORBELL ALARM SYSTEM

Unity Opto Technology Co....

1. An intelligent wireless doorbell alarm system, set and driven by a wireless communication protocol, comprising:
at least one doorbell switch, having a wireless signal module, for generating a startup signal after the doorbell switch is
triggered;

a plurality of lamps, each having a wireless transmission module and a driving module, and electrically coupled to one another
through each respective wireless transmission module and also electrically coupled to the doorbell switch, and each driving
module driving the lamps to give an alarm by light; and

an electronic device, electrically coupled to the lamps, and having a setup module for setting the lamps, and operation information
being generated and stored after each lamp is set;

wherein, after the lamps receive the startup signal through the wireless transmission modules, the lamps are driven according
to the operation information and/or the startup signal is transmitted to the other remaining lamps by the wireless transmission
modules; and when each lamp receives the startup signal transmitted from other lamps is received again or the startup signal
transmitted from the lamps has not been received within a predetermined time, the lamps stop the transmission of the startup
signal.

US Pat. No. 9,985,009

MANUFACTURING METHOD OF LED LIGHT EMITTING DEVICE

UNITY OPTO TECHNOLOGY CO....

1. A manufacturing method of an LED light emitting device capable of adjusting color temperature easily, provided for expressing at least one color temperature within a color temperature target frame and in compliance with the CIE1931 chromaticity coordinates specified by ANSI, comprising the steps of:selecting a first blue LED chip and a second blue LED chip having a same specification;
using a green phosphor together with the first blue LED chip to determine a green light frame in the CIE1931 chromaticity coordinates;
using a red phosphor together with the second blue LED chip to determine a red light frame in the CIE1931 chromaticity coordinates;
selecting a predetermined straight line passing through the color temperature target frame, and one end point of the predetermined straight line falling within the green light frame and an another end point of the predetermined straight line falling within the red light frame, so as to determine a concentration of the green phosphor and a concentration of the red phosphor; wherein the green phosphor and the first blue LED chip are packaged into an integrally formed first LED, and the red phosphor and the second blue LED chip are packaged into an integrally formed second LED, and at least one first LED and at least one second LED are installed on a substrate, and
using a quantity of the first LEDs and a quantity of the second LEDs to adjust a brightness ratio of the first LED to the second LED, so that the overall color temperature of the LED light emitting device oscillates in the predetermined straight line in the color temperature target frame,
wherein the first and the second blue LED chip have a wavelength of 400 nm-480 nm, and the red phosphor emits a red light having wavelength of 600 nm-650 nm after being excited, and the green phosphor emits a green light having wavelength of 515 nm-560 nm after being excited,
wherein the color temperature target frame has a range defined by the CIE1931 chromaticity coordinates (0.481,0.431), (0.459,0.394), (0.430,0.417) and (0.415,0.382); the green light frame has a range defined by the CIE1931 chromaticity coordinates (0.44,0.50), (0.44,0.55), (0.26,0.62), (0.27,0.40) and (0.39,0.45); and the red light frame has a range defined by the CIE1931 chromaticity coordinates (0.52,0.35), (0.56,0.39), (0.64,0.30), (0.47,0.16) and (0.46,0.32),
wherein the brightness ratio of the first LED to the second LED is 1.2-2.0.

US Pat. No. 9,591,399

AUTOMATICALLY CONTROLLED DIRECTIONAL SPEAKER, AND LAMP THEREOF

Unity Opto Technology Co....

1. An automatically controlled directional speaker, comprising:
a sound amplifying device;
an image capture device, for real time detecting the status of surrounding environment to generate at least one image information;
a computing device, communicatively coupled to the image capture device, for determining whether or not the image information
includes at least one face information;

an azimuth control motor, coupled to the sound amplifying device, for controlling the sound amplifying device to output a
sound in a direction according to the face information;

an amplitude control unit, communicatively coupled to the sound amplifying device, for controlling the volume of an output
sound according to the face information; and

a movable waveguide structure for adjusting a amplitude of a output sound, installed at a sound output position of the sound
amplifying device, and having a sound input port, a sound output port, and a sound channel included between the sound input
port and the sound output port; and the sound input port and the sound output port having adjustable relative aperture sizes
respectively,

wherein the image capture device has an infrared focusing device or an ultrasonic focusing device, the face information includes
a relative face distance and a relative face azimuth; and the relative face distance and the relative face azimuth are determined
by the infrared focusing device or the ultrasonic focusing device.

US Pat. No. 9,854,630

FLICKER-FREE DIMMING CIRCUIT FOR NON-POINT LIGHT SOURCE

Unity Opto Technology Co....

1. A flicker-free dimming circuit for a non-point light source, comprising an input module, a conversion module and an output
module, and the input module being electrically coupled to an external power supply and provided for outputting an input voltage,
and the conversion module being electrically coupled to the input module and the output module and provided for outputting
an operating voltage to the output module after receiving an input current, and the output module outputting a driving voltage
to drive at least one lamp with a wide light source area to operate, characterized in that the flicker-free dimming circuit
for a non-point light source comprises a TRIAC module for regulating a conduction phase angle of the input voltage, and the
conversion module adopts a boost circuit structure and has a conversion coil and a converter, and the conversion coil and
the converter are provided for increasing a voltage value of the input voltage to a voltage value of the operating voltage,
and the output module adopts a fly-back circuit structure and has a control coil module and a regulator, and the control coil
module is provided for sensing the operating voltage to form the driving voltage while the regulator regulates a working period
of the driving voltage to achieve a constant voltage value,
wherein the operating voltage has a voltage value of 220 volts, the converter has a sensing coil, a first core, a conversion
chip, and a conversion switch, and the conversion coil is installed at a primary side of the first core, and the sensing coil
is installed at a secondary side of the first core and electrically coupled to the conversion chip, and the conversion switch
is electrically coupled to the conversion chip and the conversion coil, and when the conversion coil transmits the input voltage,
the sensing coil forms a sensing voltage through the first core, and the sensing voltage is provided for the conversion chip
for reference and then regulate a working period of the conversion switch to maintain the voltage value of the input voltage
constant.

US Pat. No. 9,544,952

LINEAR DIMMING LED DRIVER CIRCUIT CAPABLE OF ADJUSTING COLOR TEMPERATURE

Unity Opto Technology Co....

1. A linear dimming LED driver circuit capable of adjusting color temperature, used in a lamp of a down light or a tube light
to drive a plurality of LED strings to emit light, and the linear dimming LED driver circuit being composed of a dimming module,
a rectification module, a control module and an output module, and the rectification module being electrically coupled to
an external power supply through the dimming module, and the control module being electrically coupled to the output module,
and the output module being electrically coupled to the LED strings, and the control module including a control chip, a regulator
and a sensing resistor installed therein, and the LED strings being coupled to the control chip through the regulator and
the sensing resistor, such that the sensing resistor senses a driving current passing through the LED strings and then forms
a sensed value to be fed back to the control chip, and provided for the control chip to compare the sensed value with a reference
value, so as to control the regulator to regulate the driving current, characterized in that the output module includes a
switch, the LED strings have a total forward bias voltage falling within a range of 129 volts to 135 volts, and the LED strings
are at least divided into a first string, a second string, a third string, a fourth string and a fifth string, and an end
of the fourth string is coupled to the third string and the fifth string, and the other end of the fourth string is coupled
to the first string and the second string, and the first string, the second string and the third string is coupled to an output
end of the switch, and the second string and the third string are formed by ultra blue LEDs; the output module is provided
for switching the switch to conduct the first string, the second string or the third string and then changing the color temperature
of the light emission of the lamp, so that the control module will adjust the light emitting brightness of the lamp for better
dimming range and work performance of the whole circuit if a driving voltage is in a mono sinusoidal voltage section greater
than or equal to 129 volts and smaller than or equal to 135 volts, wherein the regulator and the sensing resistor are serially
connected.

US Pat. No. 9,484,505

LED STRUCTURE APPLIED TO BACKLIGHT SOURCE

Unity Opto Technology Co....

1. A light emitting diode (LED) structure applied to a backlight source, comprising:
a base;
a blue light LED chip, mounted onto the base;
a red phosphor that absorbs a blue light emitted from the blue light LED chip to emit a red light;
a yellow phosphor that absorbs the blue light emitted from the blue light LED chip to emit a yellow light; and
an encapsulation, for packaging the blue light LED chip, the red phosphor and the yellow phosphor; wherein the red light emitted
by the red phosphor is a light having wavelength of 630 nm and a half-wave width of dominant wavelength less than 10 nm, and
the red phosphor has a chemical formula of T2XF6:Mn4+, and T is any one selected from a group consisting of Li, Na, K, and Rb, and X is any one selected from a group consisting
of Ge, Si, Sn, Zr, and Ti; characterized in that the yellow light emitted by the yellow phosphor has wavelength of 540 nm-550
nm; wherein a mixing ratio of the yellow phosphor to the red phosphor is within a range of (2.33?1):1, so that the blue light
emitted from the blue light LED chip, the red light emitted from the red phosphor, and the yellow light emitted from the yellow
phosphor may be mixed to form a white light falling within an area enclosed by ccy?1.8*ccx?0.12, ccy?1.8*ccx?0.336, ccy?0.33
and ccy?1.15 of a CIE 1931 chromaticity coordinates, wherein ccx represents the X-axis of the CIE 1931 chromaticity coordinates;
ccy represents the Y-axis of the CIE 1931 chromaticity coordinates,

wherein the white light is passed through a color filter to form three primary color lights; wherein a blue light in the three
primary color lights falls within a square region defined by (0.15±0.05, 0.08±0.05) of the CIE 1931 chromaticity coordinates;
a red light in the three primary color lights falls within a square region defined by (0.67±0.05, 0.3±0.05) of the CIE 1931
chromaticity coordinates; and a green light in the three primary color lights falls within a square region defined by (0.30±0.05,
0.63±0.05) of the CIE 1931 chromaticity coordinates,

wherein the yellow phosphor has a chemical formula of (Sr,Ba,Ca)2SiO4:Eu.

US Pat. No. 9,419,188

LED LUMINOUS STRUCTURE FOR BACKLIGHT SOURCE

Unity Opto Technology Co....

1. An LED luminous structure for backlight source, consisting of:
a base;
a blue LED chip, installed on the base;
a green LED chip, installed on the base;
a red phosphor, provided for absorbing and to be excited by a blue light emitted by the blue LED chip to produce a red light;
and

an encapsulation resin, for packaging the blue LED chip, the green LED chip and the red phosphor, wherein the red phosphor
has a chemical formula of T2XF6:Mn4+, and T is an element selected from the group of Li, Na, K and Rb, and X is an element selected from the group of Ge, Si,
Sn, Zr and Ti, and the red phosphor has a particle size falling within a range of 20-30 ?m; the encapsulation resin has a
moisture permeability falling within a range of 10-20 g/m2.24h and an oxygen permeability smaller than 1000 cm3/m2.24h.atm, wherein the particle size of the red phosphor, and the moisture permeability and the oxygen permeability of the
encapsulation resin need to be satisfied simultaneously, so that the lights of the blue LED chip, the green LED chip and the
red phosphor that is excited by the blue light are mixed together to produce a white light.

US Pat. No. 9,674,908

SECONDARY-SIDE BUCKING AND CURRENT-STABILIZING FLYBACK POWER CONVERTER

Unity Opto Technology Co....

1. A secondary-side bucking and current-stabilizing flyback power converter, adopting a dual-stage isolated circuit architecture,
and provided for driving a low-power LED module to achieve the effect of a non-strobe output and improve the illumination
effect of the LED module, comprising:
an input module, electrically coupled to an external power supply, and provided for outputting an input current;
a conversion module, adopting a flyback circuit architecture, and including a primary coil, a regulation coil, a regulator,
an iron core and a secondary coil, and the primary coil and the regulation coil being installed at a primary side of the iron
core, and the secondary coil being installed at a secondary side of the iron core, and the regulator being electrically coupled
to the primary coil and the regulation coil, and the primary coil being electrically coupled to the input module, and the
secondary coil forming an output voltage through the magnetic induction of the iron core after receiving the input current,
while the regulation coil forming a regulation signal through the magnetic induction of the iron core and the regulation signal
being provided for the regulator to regulate the duty cycle of the primary coil; and

an output module, adopting a buck circuit architecture, and comprising a current stabilizer, and the output module being electrically
coupled to the secondary coil and the LED module, and the output voltage being used to convert and form an output current
to be outputted to the LED module, and the current stabilizer regulating the duty cycle of the output voltage after sensing
the load effect of the output current on the LED module to keep the total output of the output current constant and reduce
the ripple amplitude of the output current.

US Pat. No. 9,671,070

LED SPHERICAL LAMP

Unity Opto Technology Co....

1. An LED spherical lamp, comprising a base, a power supply unit, a substrate and a cover therein, and the power supply unit
being installed inside the base, and the substrate having a plurality of LED light emitting elements and being coupled to
a side of the base, and the cover being fixed to the base for covering the substrate therein, characterized in that the LED
spherical lamp further comprises an electrical connector installed to the substrate and having a plurality of electrical terminals
for electrically coupling the substrate to the power supply unit, and an engaging slot concavely formed on a side of the electrical
connector to fix to the power supply unit, such that the power supply unit and the substrate form a current path to drive
the LED light emitting elements,
wherein the substrate has an installing hole corresponsive to the electrical connector, each electrical terminal includes
at least one first pin terminal and at least one second pin terminal, and the first pin terminal is disposed in the engaging
slot and conducted with the power supply unit, and the second pin terminal is extended and protruded from an outer side of
the electrical connector,

wherein the electrical connector further includes a pair of limit portions disposed on opposite sides of an outer side of
the electrical connector, and a side of each limit portion has a plurality of second latch slots corresponsive to the second
pin terminals respectively and provided for fixing the second pin terminals, and the other side of each limit portion abuts
a plane of the substrate when the electrical connector is installed to the substrate.

US Pat. No. 9,198,243

LED DRIVER CIRCUIT FOR SUPPLYING TRIAC HOLDING CURRENT BY USING CONTROLLABLE CURRENT SOURCE

Unity Opto Technology Co....

1. An LED driver circuit for supplying a TRIAC holding current by using a controllable current source, being a single-stage
power factor correction circuit architecture, comprising:
a dimming module;
a rectification module;
a conversion module; and
a control module, comprising a control chip,
wherein the dimming module comprises a TRIAC element, and the rectification module is electrically coupled to the dimming
module and the conversion module, and the conversion module is electrically coupled to the control module and a plurality
of LED light sources wherein, the conversion module receives an input voltage outputted by the rectification module to form
a stable operating current via a controllable current source, an end of the controllable current source is couple to the rectification
module, an another end of the controllable current source is directly couple to a terminal of the control module and a terminal
of a regulating switch; wherein a gate of the regulating switch is connected to the control chip, the control module includes
a peak detection unit, a cut-off timing unit and a switch unit, and the peak detection unit is electrically coupled to the
controllable current source, for detecting the peak value of the input voltage to analyze and form a detection signal; the
cut-off timing unit is electrically coupled to the peak detection unit and the switch unit, for sensing a cut-off time of
the switch unit, and when the cut-off time reaches a maximum tolerance, a control signal is outputted, and the switch unit
enters into a cut-off state according to the received detection signal and enters into a conducting state according to the
switching signal, so that the controllable current source supplies the constant operating current to the LED light sources,
while maintaining the operating current always greater than a holding current required by an operation of the TRIAC element
when the TRIAC element is conducted.

US Pat. No. 9,806,235

LIGHT EMITTING DIODE BRACKET

Unity Opto Technology Co....

1. A light emitting diode (LED) bracket, comprising a first metal sheet, a second metal sheet and a casing, and the casing
covering the first metal sheet and the second metal sheet and having a receiving slot, characterized in that the casing partially
covers the first metal sheet and the second metal sheet, and the first metal sheet has a first pin terminal and a first carrying
end, and the second metal sheet has a second pin terminal and a second carrying end, and the first pin terminal and the second
pin terminal are non-bent and arranged substantially opposite to each other and extended outwardly from the casing, and the
first carrying end and the second carrying end are disposed in the receiving slot, and at least one first support portion
and at least one second support portion are provided for enhancing the strength of fixing the first metal sheet and the second
metal sheet with the casing,
wherein at least one LED chip is installed at the first carrying end or the second carrying end, or jumped across the first
carrying end and the second carrying end,

wherein the first support portion and the second support portion are disposed at the bottom of the first carrying end and
the second carrying end respectively and inwardly and concavely formed.

US Pat. No. 9,166,103

SINGLE-CHIP TWIN LIGHT SOURCE LIGHT EMITTING DEVICE

Unity Opto Technology Co....

1. A single-chip twin light source light emitting device, comprising:
a first epitaxial layer, including a first n-type semiconductor layer with a n-type conducting structure, a first light emitting
layer with a multi-quantum well structure, and a first p-type semiconductor layer with a p-type conducting structure, for
emitting a first light;

a single silicon based substrate, disposed on a side of the first epitaxial layer;
a second epitaxial layer, disposed at a position opposite to the first epitaxial layer and on the other side of the substrate,
and including a second n-type semiconductor layer with a n-type conducting structure, a second light emitting layer with a
multi-quantum well structure, and a second p-type semiconductor layer with a p-type conducting structure, for emitting a second
light;

a first electrode, disposed on a side of the first n-type semiconductor layer of the first epitaxial layer and away from the
substrate;

a first reflective layer, disposed on a side of the first p-type semiconductor layer of the first epitaxial layer;
a first bonding layer, disposed between the first reflective layer and the substrate; and
a first insulating part, inserted on a side of the first reflective layer.

US Pat. No. 9,076,667

WHITE LIGHT EMITTING DIODE MODULE

Unity Opto Technology Co....

1. A white light emitting diode module, comprising:
a conducting wire frame, having an accommodating groove;
a first primary color chip, installed at the bottom of the middle of the accommodating groove, and having a light emitting
surface area A1, and the first primary color chip transmitting a first light emitting source with a wavelength ?1, and 500 nm??1 ?550 nm;

a second primary color chip, stacked on top of the first primary color chip, and having a light emitting surface area A2, and transmitting a second light emitting source with a wavelength ?2, and 380 nm?2 ?470 nm, and the first light emitting source and the second light emitting source being mixed to form a stacked light source;
and

a phosphor layer, disposed on the second primary color chip, and emitting a fluorescent light with a wavelength ?3, and 600 nm??3 ?670 nm;

wherein, the light emitting surface area A1 of the first primary color chip and the light emitting surface area A2 the second primary color chip satisfy the relation of 1
wherein the phosphor layer is a phosphor plate attached onto the second primary color chip and having a light emitting surface
area A3, and the light emitting surface area A2 of the second primary color chip and the light emitting surface area A3 of the phosphor plate satisfy the relation of 0.8 ?A3/A2 ?1.

US Pat. No. 9,976,732

FLAT PANEL LIGHTING DEVICE AND DRIVING CIRCUITRY

Unity Opto Technology Co....

1. A light fixture comprising:a frame having a thickness of no more than about 1.0 inches;
a substantially flat light emitting diode (LED) panel disposed within the frame, the substantially flat LED panel including an array of LEDs disposed adjacent at least one edge of the frame; and
power and control circuitry for driving the array of LEDs housed entirely within the frame at an edge of the frame, the power and control circuitry including an LED driver configured to convert an AC input from an external AC power supply into a DC output; wherein the power and control circuitry has a length and a width, wherein the length-to-width ratio is at least 5 to 1.

US Pat. No. 9,841,149

LED LAMP

Unity Opto Technology Co....

1. An LED lamp, comprising a tube and two end covers, and the tube including an LED module therein, and the end covers being
coupled to both ends of the tube respectively, and provided for accommodating a power supply member or a power conversion
member, and the power supply member and the power conversion member being electrically coupled to the LED module, and the
end covers having a first penetrating hole for installing a connecting member to hang or install the LED lamp, and the LED
lamp being characterized in that the LED lamp further comprises a back plate, having at least two first locking holes, and
each end cover has at least one second locking hole corresponsive to the first locking holes, and at least two latching members
pass through the first locking hole and the second locking hole, so that the back plate and the two end covers are coupled
to one another and engaged to a side of the tube; each end cover is a rectangular structure having an accommodating space,
and the accommodating space has an isolating plate, for isolating the power supply member or the power conversion member,
and contacting the connecting member through the first penetrating hole.

US Pat. No. 9,638,390

AXIALLY SYMMETRIC LED LIGHT BULB

Unity Opto Technology Co....

1. An axially symmetric LED light bulb, comprising a lamp shade, a substrate and a connecting seat, and the substrate being
installed on the connecting seat and having a plurality of LED light sources, and an edge of the lamp shade being coupled
to the connecting seat and the substrate being covered inside the lamp shade, characterized in that the lamp shade has an
unequal thickness, and the thickness of the top of the lamp shade is greater than the thickness of the lateral side of the
lamp shade, such that the LED light sources are arranged at a polar coordinate origin position, and when the illumination
of LED light source points at a direction towards the polar coordinate 0 degree and after the light of the LED light source
passes through the lamp shade, at least 5% of the total flux of the LED light source is obtained at the polar coordinate positions
from 135 degrees to 180 degrees; and the light of the LED light source passes through the lamp shade satisfies (|I?Iavg|/Iavg)<25%,
wherein, I is an intensity of light of at least 90% of a spatial position between the polar coordinate positions from 0 degree
to 135 degrees, and Iavg is an average light intensity between the polar coordinate positions from 0 degree to 135 degrees.

US Pat. No. 10,215,911

LIGHTING ASSEMBLY

Unity Opto Technology Co....

1. A light fixture, comprising:a metal frame comprising a floor and an edge wall at a first side of the metal frame, wherein an edge channel is defined within the frame adjacent the edge wall;
a set of light emitting diodes (LEDs) disposed within the metal frame at a second side of the metal frame;
driving circuitry comprising a printed circuit board disposed within the edge channel, the printed circuit board comprising an AC/DC transformer configured to convert an AC input operatively coupled to an AC power supply external to the light fixture into a DC output operatively coupled to the set of light emitting diodes (LEDs), wherein the printed circuit board includes a metal heat sink backing layer comprising a piece of similar length and width to a length and a width of the printed circuit board mounted to the metal frame; and
a substantially flat optically transmissive panel assembly disposed within the metal frame, wherein the substantially flat optically transmissive panel assembly light receives light from the set of light emitting diodes (LEDs) at the second side of the metal frame.

US Pat. No. 10,645,781

HIGH-VOLTAGE LINEAR DRIVE AND MEMORY DIMMING LED LIGHTING DEVICE

UNITY OPTO TECHNOLOGY CO....

1. A high-voltage linear drive and memory dimming LED lighting device, comprising:a high voltage linear constant current circuit, for converting an externally inputted high voltage AC signal into a high voltage DC signal;
a control IC, electrically coupled to the high voltage linear constant current circuit, and driven directly by receiving a high voltage signal, and the control IC further comprising:
a voltage regulator module, electrically coupled to the high voltage linear constant current circuit;
a switching module, electrically coupled to the voltage regulator module, and having at least two electronic switches; and
a memory module, electrically coupled to the switching module;
a first LED string, electrically coupled to the high voltage linear constant current circuit and the control IC, and having a first color temperature; and
a second LED string, electrically coupled to the high voltage linear constant current circuit and the control IC, and having a second color temperature; wherein the light of the first LED string and the light of the second LED string are mixed to form a third color temperature,
wherein the electronic switches are electronic switches which as semiconductor field effect transistors, and the ON/OFF states of the electronic switches define a truth table, and the first color temperature, the second color temperature, or the third color temperature are determined according to the state of the truth table.

US Pat. No. 10,386,023

LED LIGHT FIXTURE AND ASSEMBLY METHOD THEREFOR

Unity Opto Technology Co....

1. An LED (light emitting diode) panel lighting fixture, comprising:a top, comprising:
a top frame including a bezel surrounding a light emitting area;
a base, comprising:
a circular base frame, wherein the top frame and the circular base frame are separate parts and the top frame is configured to be joined to the base frame to form an assembled frame;
an LED strip comprising a plurality of LEDs disposed within a channel of the circular base frame and adjacent a first edge surface at an indentation of an indented circular optically transmissive panel;
the indented circular optically transmissive panel, for distribution of light received from the LED strip at the first edge surface of the indented circular optically transmissive panel to the light emitting area;
an LED driver disposed within the channel of the circular base frame between a second edge surface of the indented circular optically transmissive panel and the circular base frame, the LED driver being configured to convert an AC power input from an external AC power supply to a DC power output for the LED strip;
wherein a mounting plate for the base contains a plurality of apertures including holes and slots configured in a circle, wherein the holes and slots are configured in a circle for securing the LED panel lighting fixture to a ceiling box that contains the external AC power supply.

US Pat. No. 10,278,255

LIGHT-EMITTING DEVICE WITH DIGITAL CONTROL OF COLOR TEMPERATURE MODULATION AND APPLICATION THEREOF

Unity Opto Technology Co....

1. A light-emitting device with digital control of color temperature modulation, electrically coupled to a wall switch for controlling an ON or OFF state, comprising:a DIP switch;
a plurality of first LEDs, having a first color temperature;
a plurality of second LEDs, having a second color temperature; and
a control module, electrically coupled to the wall switch, the DIP switch, the plurality of first LEDs, and the plurality of second LEDs, wherein a truth table information is written into the control module, and the truth table information includes a first mode, a second mode, a third mode, and a memory and automatic switch mode, and the DIP switch is set to perform a digital switching for selectively activating said first, second, third, and memory and automatic switch modes according to the truth table information, and only the plurality of first LEDs are turned ON under a fixed power in the first mode; both of the plurality of first LEDs and the plurality of second LEDs are turned ON simultaneously under the fixed power in the second mode; only the plurality of second LEDs are turned on under the fixed power in the third mode; and in the memory and automatic switch mode, a color temperature is sequentially switched and controlled by an operation of turning on and off of the wall switch according to the truth table information which is the first mode, the second mode and the third mode,
wherein, the wall switch has a larger capacitance than the control module so that when the wall switch is turned off, the control module remain in a turn on state for a period of time,
wherein, when the wall switch is turned on, the control module detects a number of times of switching when the wall switch is situated at an ON operation, the number of times of switching is provided for the memory and automatic switch mode to be saved as mode of a previous truth table information.

US Pat. No. 10,925,138

FLICKER-FREE LINEAR LED DRIVE CIRCUIT

UNITY OPTO TECHNOLOGY CO....

1. A flicker-free linear LED drive circuit, electrically coupled to an external power supply which is an alternating current power supply, and converting an input voltage of the external power supply into an output current to be supplied to at least one LED; the flicker-free linear LED drive circuit comprising a measuring module, a regulating module and a rectifier module, and the regulating module being electrically coupled to the rectifier module and the measuring module, and the rectifier module being electrically coupled to the external power supply, characterized in that the measuring module is provided for measuring a phase angle of the input voltage to generate and send a measurement signal to the regulating module, wherein the regulating module sets a conduction angle range having a fixed power for driving of the at least one LED, and adjusts the measurement signal according to a phase angle of the measurement signal, and the measurement signal forms a plurality of voltage signals during a half-wave period of the input voltage according to the conduction angle range and adjusts the plurality of voltage signals to form the output current, and the output current is a direct current signal provided for the at least one LED to emit light; wherein the plurality of voltage signals has a same maximum current value, and a duty cycle of the plurality of voltage signals is smaller than the half-wave period of the input voltage to reduce flickering of the at least one LED formed by the output current;wherein the measuring module further comprises a measuring RC circuit and a measurement amplifier; the measurement amplifier has an input terminal electrically coupled to the measuring RC circuit and a reference voltage device for adjusting and generating the phase of the input voltage according to a measured resistance of the measuring RC circuit, and the measurement amplifier has an output terminal electrically coupled to the regulating module for forming and coupling the measurement signal to the regulating module;
wherein the measuring RC circuit further comprises a first filter capacitor electrically coupled to the rectifier module and the measurement amplifier, so that the input voltage forms a ripple signal and couples the ripple signal to the measurement amplifier;
wherein the regulating module further comprises a regulation comparator and a regulating RC circuit; the regulating RC circuit is provided for coupling the measurement signal to the regulation comparator, so that the regulation comparator can receive and adjust the measurement signal to generate the plurality of voltage signals, and the regulating RC circuit adjusts the plurality of voltage signals to form the output current and couples the output current to the at least one LED; wherein the regulation comparator adjusts the duty cycle of the plurality of voltage signals according to a compensation capacitance and a compensation resistance of the regulating RC circuit;
wherein the regulating RC circuit further comprises a regulation switch electrically coupled to the regulation comparator for conducting or switching off the plurality of voltage signals to form the output current to be supplied to the at least one LED.

US Pat. No. 10,422,518

FLAT PANEL LIGHTING DEVICE

Unity Opto Technology Co....

1. A light fixture comprising:a frame having a thickness of less than about 1.0 inches, the frame including a first edge, a second edge, and a first inside bracket; wherein the frame and the first inside bracket cooperate to form a first channel within the frame at the first edge of the frame and the first inside bracket is configured to form an edge surface of the first channel within the frame;
a substantially flat light emitting diode (LED) panel disposed within the frame, wherein the substantially flat light emitting diode (LED) panel includes an optically-transmissive panel for distribution of light received at a first edge of the optically transmissive panel from a first LED strip, the first LED strip comprising a plurality of LEDs disposed adjacent the first edge of the optically-transmissive panel at the second edge of the frame;
an LED driver disposed within a power supply compartment at the first channel within the frame, wherein the LED driver is electrically coupled to an external AC power supply via AC input wiring and is configured to receive an AC input from the external AC power supply and convert the AC input into a DC output suitable for powering the first LED strip;
wherein the first inside bracket includes a slot through which the AC input wiring is routed between the first channel and a central region at the rear of the lighting fixture and wherein the first inside bracket is configured to separate the power supply compartment from the central region at the rear of the lighting fixture.

US Pat. No. 10,364,974

FLAT PANEL LIGHTING DEVICE AND DRIVING CIRCUITRY

Unity Opto Technology Co....

1. A light fixture comprising:a frame having a thickness of no more than about 1.0 inches and including a first portion of the frame and a second portion of the frame, wherein the first portion of the frame defines a first channel between a first edge of an optically transmissive panel and a first outer edge of the frame;
a substantially flat light emitting diode (LED) panel disposed within the frame, wherein the substantially flat LED panel includes an LED strip and the optically transmissive panel, and the optically transmissive panel is configured to distribute light received at a light-input edge of the optically transmissive panel from the LED strip, the LED strip comprising a plurality of LEDs mounted to the second portion of the frame adjacent the light-input edge of the optically transmissive panel; and
an LED driver housed entirely within the first channel adjacent the first outer edge of the frame, wherein the LED driver is supported by the first portion of the frame and is configured to receive an AC input from an external AC power supply and to provide a DC output to the LED strip, wherein the LED driver includes a PCB-mounted transformer.

US Pat. No. 10,763,409

LED LIGHT SOURCE, LED LIGHT SOURCE MANUFACTURING METHOD, AND DIRECT DISPLAY DEVICE THEREOF

UNITY OPTO TECHNOLOGY CO....

1. An LED light source manufacturing method, comprising the steps of:providing a base having an upper edge, a light emitting region formed and enclosed by the upper edge, and an inner mounting surface inwardly and concavely formed on the base along the upper edge;
forming a reflective layer on the inner mounting surface;
providing at least an LED chip installed at a bottom position of the inner mounting surface by a flip chip method or combining two metal wire bonds by a solid crystallization method;
injecting a low-viscosity and high-volatilization anti-vulcanization solvent to the inner mounting surface of the base, so that the anti-vulcanization solvent completely covers all metal materials on the inner mounting surface;
resting or heating to volatize the anti-vulcanization solvent to form an anti-vulcanization structure, and the anti-vulcanization structure being in a continuous and uninterruptible thin film state;
providing a light excitation structure including at least a fluorescent powder containing one selected from the group consisting of sulfur, lead, and phosphorus, and the light excitation structure being installed in the base;
packaging the light excitation structure and the LED chip by an encapsulation structure, and the anti-vulcanization structure isolating all metal materials on the inner mounting surface from directly contacting with the encapsulation structure, and the encapsulation structure being made of organic silicone and containing a platinum catalyst; and
dispensing a protection structure to the base and covering the encapsulation structure; wherein the encapsulation structure has a hardness lower than a hardness of the protection structure,
wherein the protection structure further comprises a plurality of uniform light particles scattered in the protection structure, and the uniform light particle is selected from the group consisting of SiO2, BN, Al2O3, and TiO2 or a combination thereof,
the LED chip has a light emission wavelength falling within a range of 400-460 nm, and the light excitation structure comprises a green fluorescent powder, a first red fluorescent powder and a second red fluorescent powder, and the green fluorescent powder contains sulfur, and the first red fluorescent powder does not contain sulfur, and the second red fluorescent powder contains sulfur; the first red fluorescent powder is selected from the group consisting of T2XF6:Mn4+, M2Si5N8:Eu2+, and CaAlSiN3:Eu2+; T is selected from the group consisting of Li, Na, K, and Rb, and X is selected from the group consisting of Ge, Si, Sn, Zr, and Ti; and M is selected from the group consisting of Ca, Sr, and Ba; and the second red fluorescent powder is selected from the group consisting of CaS:Eu2+, SrS:Eu2+, Ba2ZnS3:Mn2+, and a red quantum dot.

US Pat. No. 10,749,081

LED LIGHT SOURCE, LED LIGHT SOURCE MANUFACTURING METHOD, AND DIRECT DISPLAY DEVICE THEREOF

UNITY OPTO TECHNOLOGY CO....

1. An LED light source, comprising:a base, comprising an upper edge, a light emitting region formed and enclosed by the upper edge, an inner mounting surface concavely formed on the base and along the upper edge, and a reflective layer disposed on the inner mounting surface;
at least an LED chip, combined with two metal wire bonds and installed at a bottom position of the inner mounting surface by solid-crystallization;
an anti-vulcanization structure, continuously and uninterruptibly formed on the reflective layer, the metal wire bonds, and a surface of the LED chip;
a light excitation structure, including at least a fluorescent powder containing an element selected from the group consisting of sulfur, lead, and phosphorus, and the light excitation structure being installed in the base;
an encapsulation structure, installed in the base, for packaging the light excitation structure and the LED chip in the base, and the anti-vulcanization structure isolating the reflective layer, the metal wire bonds and the LED chip from directly contacted with the encapsulation structure, and the encapsulation structure being made of organic silicone and containing a platinum catalyst;
a protection structure, installed at the base by a dispensing method and covering the encapsulation structure; wherein the encapsulation structure has a hardness lower than the protection structure; and
a plurality of uniform light particles scattered in the protection structure, and the uniform light particle being one selected from the group consisting of SiO2, BN, Al2O3, and TiO2 or a combination thereof,
wherein the LED chip has a light emission wavelength falling within a range of 400-460 nm, and the light excitation structure comprises a green fluorescent powder, a first red fluorescent powder and a second red fluorescent powder, and the green fluorescent powder contains sulfur, and the first red fluorescent powder does not contain sulfur, and the second red fluorescent powder contains sulfur; the first red fluorescent powder is selected from the group consisting of T2XF6:Mn4+, M2Si5N8:Eu2+, and CaAlSiN3:Eu2+; T is selected from the group consisting of Li, Na, K, and Rb, and X is selected from the group consisting of Ge, Si, Sn, Zr, and Ti; M is selected from the group consisting of Ca, Sr, and Ba; and the second red fluorescent powder is selected from the group consisting of CaS:Eu2+, SrS:Eu2+, Ba2ZnS3:Mn2+, and a red quantum dot.

US Pat. No. 10,352,544

FIELD-SERVICEABLE FLAT PANEL LIGHTING DEVICE

Unity Opto Technology Co....

16. A light fixture comprising:(a) a light emitting panel assembly comprising a frame and a substantially flat light emitting diode (LED) panel disposed within the frame, said substantially flat light emitting diode (LED) panel including an optically transmissive panel, and an array of light emitting diodes (LEDs) disposed adjacent an edge of the optically transmissive panel and disposed adjacent a first edge of the frame;
(b) a power circuitry module disposed within the frame adjacent a second edge of the frame and releasably attachable to the light emitting panel assembly, said power circuitry module including a power circuit, wherein the power circuit comprises a printed circuit board having a length and a width, wherein a length-to-width ratio of the printed circuit board is at least five-to-one;
(c) a decouplable source electrical connector that electrically couples the power circuit to an AC power supply external to the light fixture, wherein the power circuit converts AC power to DC power to drive the array of light emitting diodes (LEDs); wherein the decouplable source electrical connector comprises a first portion electrically coupled to the power circuit, a second portion electrically coupled to the AC power supply, and a decouplable connection between the first portion and the second portion; and
(d) a decouplable driver electrical connector that electrically couples the power circuit to the array of light emitting diodes (LEDs);
wherein the frame has a thickness less than about 1.0 inch, and the substantially flat light emitting diode (LED) panel and the power circuitry module are disposed side-by-side within the frame.