US Patent No. 10,338,747

TOUCH SENSOR AND METHOD OF DRIVING THE SAME


Patent No. 10,338,747
Issue Date July 02, 2019
Title Touch Sensor And Method Of Driving The Same
Inventorship Do Ik Kim, Yongin-si (KR)
Sang Hyun Lim, Yongin-si (KR)
Ga Young Kim, Yongin-si (KR)
Young Sik Kim, Yongin-si (KR)
Sang Chul Lee, Yongin-si (KR)
Assignee Samsung Display Co., Ltd., (KR)

Claim of US Patent No. 10,338,747

1. A touch sensor, comprising:a sensor part including a first electrode and a second electrode spaced apart from each other;
a signal receiving part including a first terminal connected to the first electrode and a second terminal connected to the second electrode;
an amplifier circuit part connected between the second electrode and the second terminal;
an analog-to-digital converter part including a third terminal connected to another terminal of the signal receiving part and a fourth terminal connected to the second terminal and configured to output a digital signal corresponding to a voltage difference between the third and fourth terminals; and
a processor configured to detect a touch input from the sensor part in response to the digital signal when operating in a first mode, and to output a gain control signal for calibrating a gain value of the amplifier circuit part in response to the digital signal when operating in a second mode.