US 11,915,661 B2
Backlight adjusting method of display device, backlight adjusting device and display device
Chenxi Zhao, Beijing (CN); Xingyu Guo, Beijing (CN); Tiankuo Shi, Beijing (CN); Xiaomang Zhang, Beijing (CN); Xiangjun Peng, Beijing (CN); and Shuo Zhang, Beijing (CN)
Assigned to Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/909,420
Filed by Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Jun. 17, 2021, PCT No. PCT/CN2021/100537
§ 371(c)(1), (2) Date Sep. 5, 2022,
PCT Pub. No. WO2021/259122, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 202010573243.X (CN), filed on Jun. 22, 2020.
Prior Publication US 2023/0094077 A1, Mar. 30, 2023
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/342 (2013.01) [G09G 2300/0842 (2013.01); G09G 2320/0247 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A backlight adjusting method of a display device, wherein the display device comprises a display panel and a backlight element, the display panel is divided into a plurality of display subareas, the backlight element comprises a plurality of backlight subareas, the display subareas and the backlight subareas are in a one-to-one correspondence, the method comprises:
for each of the backlight subareas, calculating an initial backlight value of the backlight subarea according to pixel information of the display subarea corresponding to the backlight subarea; and
determining a first correction backlight value of the backlight subarea according to a preset backlight threshold and an initial backlight value of each of the other backlight subareas adjacent to the backlight subarea;
wherein the preset backlight threshold comprises a first preset backlight threshold and a second preset backlight threshold, and the determining the first correction backlight value of the backlight subarea according to the preset backlight threshold and the initial backlight value of another backlight subarea adjacent to the backlight subarea comprises:
determining a quantity of initial backlight values of all the other backlight subareas adjacent to the backlight subarea being greater than the second preset backlight threshold,
determining a type of the backlight subarea according to the quantity, wherein the type of the backlight subarea comprise an isolated halo backlight subarea and a non-isolated halo backlight subarea; and
determining the first correction backlight value of the backlight subarea, according to the first preset backlight threshold, the quantity, the type of the backlight subarea and the initial backlight values of a plurality of the backlight subareas adjacent to the backlight subarea.