US 12,437,728 B2
Backlight processing method and device of display screen, storage medium and electronic device
Hualong Liu, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/615,072
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Oct. 29, 2021, PCT No. PCT/CN2021/127542
§ 371(c)(1), (2) Date May 4, 2023,
PCT Pub. No. WO2023/070549, PCT Pub. Date May 4, 2023.
Claims priority of application No. 202111245802.5 (CN), filed on Oct. 26, 2021.
Prior Publication US 2024/0029670 A1, Jan. 25, 2024
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/342 (2013.01) [G09G 2320/0626 (2013.01); G09G 2360/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A backlight processing method of a display screen, wherein the display screen comprises a backlight module and a display panel which are arranged in a stacked manner, the backlight processing method comprises:
acquiring an image to be displayed;
dividing a plurality of backlight regions of the backlight module into first type backlight regions and second type backlight regions according to the image to be displayed, when the image to be displayed satisfies a preset condition;
controlling a luminance value of each of the first type backlight regions to be a target luminance value determined according to the image to be displayed;
controlling a luminance value of each of the second type backlight regions to a preset luminance value, wherein the preset luminance value is less than the target luminance value, and a difference between the preset luminance value and the target luminance value is greater than a preset difference value;
controlling the display panel to display the image to be displayed, based on luminance of the first type backlight regions and the second type backlight regions,
determining a target luminance value corresponding to each of the backlight regions and an average value corresponding to each of the backlight regions according to the image to be displayed, when the image to be displayed is an n-th frame image or an image after the n-th frame image in a corresponding video;
counting a target number of backlight regions each having a target luminance value not equal to 0;
determining that the image to be displayed satisfies a preset requirement when the target number is greater than a preset number and the average value corresponding to each of the backlight regions is less than a preset average value; and
determining that the image to be displayed satisfies the preset condition when all of previous n−1 frame images before the image to be displayed satisfy the preset requirement.