US 12,436,633 B2
Touch sensing display apparatus
Kwang Soo Kim, Paju-si (KR); and Yong Ho Kim, Paju-si (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Dec. 6, 2023, as Appl. No. 18/531,273.
Claims priority of application No. 10-2023-0011833 (KR), filed on Jan. 30, 2023.
Prior Publication US 2024/0256064 A1, Aug. 1, 2024
Int. Cl. G06F 3/041 (2006.01)
CPC G06F 3/0412 (2013.01) 22 Claims
OG exemplary drawing
 
1. A touch sensing display apparatus comprising:
a display panel where display driving of the display panel to display an image and touch sensing driving of the display panel to sense touch of the display panel are alternately implemented at a predetermined period of time; and
a gate driving circuit including a plurality of stages whose operations are sequentially activated to drive gate lines of the display panel,
wherein each of the plurality of stages is activated in operation according to a display carry clock having a voltage level that changes between a gate on voltage and a gate off voltage in a display frame and output a display scan signal to the display panel during the display driving, and
wherein each of the plurality of stages is activated in operation according to a touch carry clock changing between the gate on voltage and the gate off voltage in a touch frame and output a touch scan signal to the display panel during the touch sensing driving, and
wherein an on pulse width of the touch carry clock while the touch carry clock is at the gate on voltage is narrower than an on pulse width of the display carry clock while the display carry clock is at the gate on voltage.