US 12,340,728 B2
Method for controlling offset voltage in display device, display device, and storage medium
Jiajhang Wu, Beijing (CN); Jangjin Nam, Beijing (CN); Dongmyung Lee, Beijing (CN); and Minsung Kim, Beijing (CN)
Assigned to BEIJING ESWIN COMPUTING TECHNOLOGY CO., LTD., Beijing (CN); and HEFEI ESWIN COMPUTING TECHNOLOGY CO., LTD., Anhui (CN)
Filed by Beijing ESWIN Computing Technology Co., Ltd., Beijing (CN); and Hefei ESWIN Computing Technology Co., Ltd., Anhui (CN)
Filed on Nov. 29, 2022, as Appl. No. 18/071,177.
Claims priority of application No. 202111435843.0 (CN), filed on Nov. 29, 2021.
Prior Publication US 2023/0169911 A1, Jun. 1, 2023
Int. Cl. G09G 3/20 (2006.01); G09G 3/36 (2006.01)
CPC G09G 3/2096 (2013.01) [G09G 3/3614 (2013.01); G09G 3/20 (2013.01); G09G 3/3685 (2013.01); G09G 3/3688 (2013.01); G09G 2310/0254 (2013.01); G09G 2310/0291 (2013.01); G09G 2320/0247 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for controlling an offset voltage in a display device, comprising:
generating a chopper signal based on at least one of a data output control signal and a polarity inversion control signal; and
controlling, according to the chopper signal, the polarity of an offset voltage of an operational amplifier in the display device, so that the offset voltage is equivalently eliminated within at least one of a design space range and a design time range,
wherein the generating the chopper signal based on at least one of the data output control signal and the polarity inversion control signal comprises:
determining, based on the data output control signal and the polarity inversion control signal, a pixel driving mode signal in the display device, the pixel driving mode signal comprising a first potential and a second potential; and
generating the chopper signal based on the pixel driving mode signal and at least one of the data output control signal and the polarity inversion control signal, and
wherein the controlling, according to the chopper signal, the polarity of the offset voltage of the operational amplifier in the display device comprises:
when the pixel driving mode signal is the first potential, controlling, based on a frame chopper signal triggered to be generated by the polarity inversion control signal, the polarity of the offset voltage of the operational amplifier in the display device, and controlling, based on a line chopper signal triggered to be generated by the data output control signal, the polarity of the offset voltage of the operational amplifier in the display device, and
when the pixel driving mode signal is the second potential, controlling, based on the line chopper signal triggered to be generated by the polarity inversion control signal, the polarity of the offset voltage of the operational amplifier in the display device.