US 11,915,650 B2
Sensing circuit, display device and method of operating a sensing circuit
Hayong Jung, Hwaseong-si (KR); Jung-Taek Kim, Seoul (KR); Joonsuk Baik, Suwon-si (KR); Jaehoon Shin, Hwaseong-si (KR); and Wook Lee, Hwaseong-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Nov. 14, 2022, as Appl. No. 17/986,342.
Claims priority of application No. 10-2022-0041571 (KR), filed on Apr. 4, 2022.
Prior Publication US 2023/0317001 A1, Oct. 5, 2023
Int. Cl. G09G 3/3233 (2016.01)
CPC G09G 3/3233 (2013.01) [G09G 2300/0426 (2013.01); G09G 2300/0819 (2013.01); G09G 2300/0852 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/045 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A sensing circuit of a display device, the sensing circuit comprising:
a sensing line initialization circuit which substantially simultaneously initializes a first sensing line and a second sensing line in a first sub-sensing period of a sensing period;
a first line selection switch which couples the first sensing line to a sensing channel in the first sub-sensing period;
a second line selection switch which couples the second sensing line to the sensing channel in a second sub-sensing period of the sensing period; and
the sensing channel which samples a first sensing voltage of the first sensing line in a first sampling period of the first sub-sensing period, and samples a second sensing voltage of the second sensing line in a second sampling period of the second sub-sensing period,
wherein the second sensing line is not initialized during a period from the first sampling period to the second sampling period, and
the second sampling period is shorter than the first sampling period.