US 12,105,909 B2
Method for driving touch-and-display device, driving circuit, and touch-and-display device preliminary class
Hung-Hsiang Chen, Hsinchu (TW); Chang-Hung Chen, Zhubei (TW); and Huang-Chin Tang, Zhubei (TW)
Assigned to NOVATEK MICROELECTRONICS CORP., Hsinchu (TW)
Filed by NOVATEK MICROELECTRONICS CORP., Taiwan (CN)
Filed on Feb. 22, 2023, as Appl. No. 18/112,642.
Application 18/112,642 is a continuation of application No. 17/313,796, filed on May 6, 2021, granted, now 11,609,657.
Claims priority of provisional application 63/151,049, filed on Feb. 18, 2021.
Claims priority of provisional application 63/021,663, filed on May 7, 2020.
Prior Publication US 2023/0251739 A1, Aug. 10, 2023
Int. Cl. G06F 3/041 (2006.01); G09G 3/3225 (2016.01)
CPC G06F 3/04166 (2019.05) [G09G 3/3225 (2013.01); G09G 2310/08 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for driving an OLED touch-and-display device, the OLED touch-and-display device including a display panel including a plurality of rows of pixels, a plurality of gate driving lines (GL), and a plurality of light-emission control lines (EM) in one-to-one correspondence, wherein the method comprises:
setting a first light-emission control signal applied to a light-emission control line corresponding to a first row of pixels to inactive level at a preset time point, and maintaining the first light-emission control signal at inactive level;
setting a first gate driving signal applied to a gate driving line corresponding to the first row of pixels to active level, after a first preset time length elapses from the preset time point;
generating, based on a first clock signal and from the first gate driving signal, sequentially-shifted gate driving signals;
generating, based on a second clock signal and from the first light emission control signal, sequentially-shifted light-emission control signals, wherein, a first clock cycle of the first clock signal is less than a second clock cycle of the second clock signal; and
during a touch detection period, suspending generation of the sequentially-shifted gate driving signals without suspending generation of the sequentially-shifted light-emission control signals, wherein each display frame is divided into at least one display period and at least one touch detection period which are alternated,
wherein a time length of the first clock cycle (TGCK) and a time length of the second clock cycle (TEMCK) satisfy the following relationship:
TGCK=TEMCK×DP/(DP+TP)
where, DP is the time length of one display period and TP is the time length of one touch detection period.