US 11,726,612 B2
Display device and method of driving the same
Boram Choi, Asan-si (KR); Soojung Lee, Suwon-si (KR); Yuna Kim, Seoul (KR); and Seungwook Chun, Daegu (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Jun. 9, 2021, as Appl. No. 17/343,607.
Claims priority of application No. 10-2020-0126457 (KR), filed on Sep. 29, 2020.
Prior Publication US 2022/0100311 A1, Mar. 31, 2022
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0418 (2013.01) [G06F 3/0446 (2019.05); G06F 3/04166 (2019.05)] 20 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel configured to display an image;
an input sensor disposed on the display panel; and
a controller electrically connected to the input sensor, the input sensor comprising:
a transmission electrode; and
a reception electrode electrically insulated from the transmission electrode, wherein the controller is electrically connected to the transmission and reception electrodes, and wherein the controller is configured to:
transmit a scan signal to the transmission electrode,
sense, when operated in a first mode, a position at which a first external input is generated, and measure, when operated in a second mode, biometric information with respect to a second external input,
sense, when operated in the first mode, the position based on a first mode sensing signal to which a variation in capacitance between the transmission electrode and the reception electrode by the first external input is reflected,
compensate, when operated in the second mode, for a second mode sensing signal to which a variation in capacitance between the transmission electrode and the reception electrode by the second external input is reflected based on a compensation value to generate a compensation sensing signal, and
measure, when operated in the second mode, the biometric information based on the compensation sensing signal.