US 12,283,217 B2
Compensation methods and brightness compensation devices for display panel
Ling Xu, Guangdong (CN)
Assigned to Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen (CN)
Filed by Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Guangdong (CN)
Filed on Dec. 12, 2023, as Appl. No. 18/536,362.
Claims priority of application No. 202310451932.7 (CN), filed on Apr. 23, 2023.
Prior Publication US 2024/0355256 A1, Oct. 24, 2024
Int. Cl. G09G 3/20 (2006.01); G06T 7/00 (2017.01)
CPC G09G 3/2007 (2013.01) [G06T 7/0002 (2013.01); G06T 2207/30168 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0285 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A compensation method for a display panel, the display panel comprising a plurality of areas to be compensated, and primary subpixels and secondary subpixels disposed in each of the areas to be compensated, and the compensation method comprising:
photographing, by a plurality of camera components, the display panel displaying a preset grayscale to obtain a plurality of actual primary subpixel brightness of the display panel, wherein each of the camera components is arranged to face the areas to be compensated;
photographing, by the plurality of camera components, the display panel displaying the preset grayscale to obtain a plurality of actual secondary subpixel brightness of the display panel;
calculating a plurality of front view compensation values of the areas to be compensated according to a primary subpixel target brightness and the plurality of actual primary subpixel brightness;
determining a secondary subpixel target brightness according to the primary subpixel target brightness and a brightness relationship lookup table, wherein the brightness relationship lookup table comprises a plurality of primary subpixel brightness and a plurality of secondary subpixel brightness, each of the primary subpixel brightness and a corresponding one of the secondary subpixel brightness are configured to make the display panel have the same brightness under front and side viewing angles;
calculating a plurality of side view compensation values of the areas to be compensated according to the secondary subpixel target brightness and the plurality of actual secondary subpixel brightness;
compensating brightness of the primary subpixels in the areas to be compensated according to the plurality of front view compensation values; and
compensating brightness of the secondary subpixels in the areas to be compensated according to the plurality of side view compensation values.