US 11,810,520 B2
Method and apparatus for compensating white point coordinates, and computer device and storage medium
Jingyong Li, Beijing (CN); Jun Hong, Beijing (CN); Lei Lv, Beijing (CN); Fei Xu, Beijing (CN); Yanbin Wang, Beijing (CN); Chunmin Xu, Beijing (CN); and Wenhong Tian, Beijing (CN)
Assigned to Hefei BOE Optoelectronics Technology Co., Ltd., Anhui (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/427,623
Filed by Hefei BOE Optoelectronics Technology Co., Ltd., Anhui (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Dec. 30, 2020, PCT No. PCT/CN2020/141638
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2021/196791, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010235250.9 (CN), filed on Mar. 30, 2020.
Prior Publication US 2023/0162690 A1, May 25, 2023
Int. Cl. G09G 3/3283 (2016.01); G09G 3/36 (2006.01)
CPC G09G 3/3283 (2013.01) [G09G 3/3607 (2013.01); G09G 2310/0237 (2013.01); G09G 2320/0626 (2013.01); G09G 2340/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for compensating white point coordinates, comprising:
acquiring target brightness and target white point coordinates of a display module in a black frame insertion mode, wherein the display module comprises a backlight;
determining white point coordinates corresponding to the target brightness to be reached by the backlight in the black frame insertion mode and in an always-on mode, respectively; and
compensating the target white point coordinates based on a difference value between the white point coordinates in the always-on mode and the white point coordinates in the black frame insertion model;
wherein the compensating the target white point coordinates based on the difference value between the white point coordinates in the always-on mode and the white point coordinates in the black frame insertion mode comprises:
acquiring the compensated target white point coordinates by adding a product of a difference value between the white point coordinates in the black frame insertion mode and the white point coordinates in the always-on mode and a compensation proportion coefficient to the target white point coordinates.