US 12,079,414 B2
Method for driving touch panel and related touch control circuit
Tsen-Wei Chang, Taichung (TW); Wing-Kai Tang, Hsinchu (TW); and Shih-Chi Lin, Hsinchu County (TW)
Assigned to NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed by NOVATEK Microelectronics Corp., Hsin-Chu (TW)
Filed on Sep. 14, 2021, as Appl. No. 17/474,081.
Prior Publication US 2023/0079469 A1, Mar. 16, 2023
Int. Cl. G06F 3/041 (2006.01)
CPC G06F 3/0416 (2013.01) [G06F 3/0412 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for driving a touch panel, comprising:
outputting, by a touch control circuit, a touch driving signal to the touch panel for touch sensing, the touch driving signal having a plurality of pulses, each of the plurality of pulses having a peak;
wherein absolute values of amplitudes of the peaks increase and decrease gradually in a touch period; and
wherein the peaks of the plurality of pulses have different absolute values of the amplitudes.