US 12,248,642 B2
Touch driving circuit and touch display device
Jeonghoon Lee, Gyeonggi-do (KR); DeukSu Lee, Gyeonggi-do (KR); Sangkyu Kim, Gyeonggi-do (KR); SeungRok Shin, Gyeonggi-do (KR); and Yoonnara Jang, Gyeonggi-do (KR)
Assigned to LG Display Co., Ltd., (KR)
Filed by LG Display Co., Ltd, Seoul (KR)
Filed on Dec. 19, 2023, as Appl. No. 18/544,601.
Claims priority of application No. 10-2023-0012469 (KR), filed on Jan. 31, 2023.
Prior Publication US 2024/0256065 A1, Aug. 1, 2024
Int. Cl. G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0412 (2013.01) [G06F 3/04166 (2019.05); G06F 3/0443 (2019.05); G06F 3/0446 (2019.05)] 20 Claims
OG exemplary drawing
 
1. A touch display device, comprising:
a substrate;
a plurality of light emitting elements disposed in an active area of the substrate;
an encapsulation layer disposed on the plurality of light emitting elements;
a plurality of first touch electrode lines disposed on the encapsulation layer and including two or more first touch electrodes electrically connected along a first direction; and
a plurality of second touch electrode lines disposed on the encapsulation layer and including two or more second touch electrodes electrically connected along a second direction crossing the first direction,
wherein a first touch driving signal is supplied to the plurality of first touch electrode lines in a first touch driving period, and
wherein a second touch driving signal different from the first touch driving signal is supplied to a first group of the plurality of first touch electrode lines and a first group of the plurality of second touch electrode lines in a second touch driving period.