US 12,087,218 B2
Display compensation module, display compensation method and display device
Chenghao Liao, Beijing (CN); Guoqiang Wu, Beijing (CN); Yuanzhou Hu, Beijing (CN); and Xiaohuan Chang, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/913,793
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Nov. 12, 2021, PCT No. PCT/CN2021/130334
§ 371(c)(1), (2) Date Sep. 22, 2022,
PCT Pub. No. WO2022/156322, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 202110087871.1 (CN), filed on Jan. 22, 2021.
Prior Publication US 2024/0203340 A1, Jun. 20, 2024
Int. Cl. G09G 3/3225 (2016.01)
CPC G09G 3/3225 (2013.01) [G09G 2300/0842 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0271 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A display compensation module, applied to a display panel, wherein the display panel comprises a plurality of rows and a plurality of columns of sub-pixels, the display compensation module comprises a search circuit, a compensation control circuit and a compensation circuit, wherein the search circuit is configured to obtain, based on a display gray-scale value of an M-th row in a N-th frame of display data, a display gray-scale value of an M-th row in a (N−1)-th frame of display data and a preset compensation gray-scale search table, compensation information corresponding to the display gray-scale value of the M-th row in the N-th frame of display data and the display gray-scale value of the M-th row in the (N−1)-th frame of display data, and when the compensation information indicates that the display gray-scale values of at least part of columns of sub-pixels in the M-th row in the display panel increase from the (N−1)-th frame to the N-th frame, apply a first control signal to the compensation control circuit; N is an integer greater than 1, M is a positive integer; the compensation control circuit is electrically connected to the search circuit and is configured to: determine whether to perform a gray-scale compensation according to the display gray-scale value of the M-th row in the N-th frame of display data after receiving the first control signal, and send a compensation control signal to the compensation circuit when the gray-scale compensation is needed, and send a second control signal to the compensation circuit when the gray-scale compensation is not needed; the compensation circuit is electrically connected to the search circuit and the compensation control circuit, and is configured to: receive the compensation information, compensate the display gray-scale value of the M-th row in the N-th frame of display data according to a compensation display gray-scale value in the compensation information after receiving the compensation control signal, to obtain and output the compensated display gray-scale value, and control and output the display gray-scale value of the M-th row in the N-th frame of display data after receiving the second control signal.