US 12,260,822 B2
Display device including readout circuit to output fingerprint sensing signal and method of driving the same
Ilnam Kim, Yongin-si (KR); Hyundae Lee, Yongin-si (KR); Kangbin Jo, Yongin-si (KR); Goeun Cha, Yongin-si (KR); and Heechul Hwang, Yongin-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-Si (KR)
Filed by Samsung Display Co., Ltd., Yongin-Si (KR)
Filed on Nov. 27, 2023, as Appl. No. 18/519,078.
Claims priority of application No. 10-2022-0179313 (KR), filed on Dec. 20, 2022.
Prior Publication US 2024/0203351 A1, Jun. 20, 2024
Int. Cl. G09G 3/32 (2016.01); G06F 3/041 (2006.01); G06V 40/13 (2022.01); G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G06F 3/0412 (2013.01); G06V 40/1318 (2022.01); G09G 2300/0426 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/061 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a pixel that includes a light emitting element and a sensor that includes a light sensing element;
a scan driver configured to output a scan signal for driving the pixel and the sensor in response to a scan control signal;
a panel driving circuit configured to output the scan control signal; and
a readout circuit configured to generate switching signals based on the scan control signal and to output a fingerprint sensing signal corresponding to a sensing signal received from the sensor in response to the switching signals,
wherein the readout circuit includes:
a switching signal generator configured to generate the switching signals based on the scan control signal; and
a receiver configured to output the fingerprint sensing signal corresponding to the sensing signal received from the sensor in response to the switching signals,
wherein the scan control signal includes a scan start signal and a clock signal,
wherein, after the scan start signal transitions from a first level to a second level, the switching signal generator sequentially outputs the switching signals at an active level from a p-th pulse of the clock signal, and
wherein p is a positive integer.