US 12,334,028 B2
Backlight diffusion parameter generation method, display control method and apparatus, and display apparatus
Huiling Xue, Beijing (CN); Yifan Hou, Beijing (CN); Xiangjun Peng, Beijing (CN); Shuo Zhang, Beijing (CN); Qiong Wu, Beijing (CN); Xin Duan, Beijing (CN); and Wei Sun, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Apr. 26, 2024, as Appl. No. 18/646,812.
Application 18/646,812 is a continuation of application No. PCT/CN2023/083826, filed on Mar. 24, 2023.
Prior Publication US 2024/0321225 A1, Sep. 26, 2024
Int. Cl. G09G 3/34 (2006.01); G09G 3/20 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/3426 (2013.01) [G09G 3/2007 (2013.01); G09G 3/32 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2330/021 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A backlight diffusion parameter generation method, used for a display apparatus comprising a backlight module and a display panel, wherein the backlight module comprises a light emitting plate; wherein the light emitting plate comprises a plurality of light emitting regions, and the display panel comprises a plurality of pixels; the method comprises:
selecting and measuring illumination diffusion data of at least one light emitting region in the plurality of light emitting regions, wherein the illumination diffusion data comprises brightness data of the plurality of pixels on the display panel and distance data between positions corresponding to the plurality of pixels and a position where an illuminated light emitting region is located when only one of the light emitting regions is illuminated;
preprocessing the illumination diffusion data to obtain an effective pixel;
performing function fitting according to data corresponding to a plurality of effective pixels to obtain a point spread function representing a relationship between diffusion brightness and a diffusion distance; and
storing a backlight diffusion parameter lookup table, wherein the backlight diffusion parameter lookup table comprises a plurality of diffusion distance bonding points and diffusion brightness corresponding to each of the diffusion distance bonding points, and also comprises a diffusion slope between two adjacent diffusion distance bonding points, wherein the diffusion slope is used for performing interpolation calculation of diffusion brightness corresponding to a diffusion distance between the two diffusion distance bonding points.