US 12,148,398 B2
Brightness regulating method, regulating system and displaying device
Jin Sha, Beijing (CN); Hao Sun, Beijing (CN); Bo Xu, Beijing (CN); Meilong Hu, Beijing (CN); Zhi Zhang, Beijing (CN); Wencheng Luo, Beijing (CN); Qiang Chen, Beijing (CN); and Yang Chen, Beijing (CN)
Assigned to CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Chongqing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/795,588
Filed by Chongqing BOE Optoelectronics Technology Co., Ltd., Chongqing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Sep. 29, 2021, PCT No. PCT/CN2021/121815
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2023/050190, PCT Pub. Date Apr. 6, 2023.
Prior Publication US 2024/0185806 A1, Jun. 6, 2024
Int. Cl. G09G 3/34 (2006.01)
CPC G09G 3/342 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0626 (2013.01); G09G 2360/145 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A brightness regulating method, wherein the method is applied to a displaying device, the displaying device comprises a backlight module, and the brightness regulating method comprises:
dividing a backlight source of the backlight module into a plurality of light areas;
acquiring pixel quantities and pixel grayscale values of pixels within pixel areas corresponding to each of the light areas;
according to the pixel quantities and the pixel grayscale values, determining brightness parameters of the light areas; and
according to the brightnesses parameters, regulating brightness of the light areas;
wherein the brightness regulating method is executed by a brightness regulating system, the brightness regulating system comprises: a controller and the backlight module that are electrically connected;
the backlight module is configured for providing the backlight source under controlling by the controller;
the controller comprises an area dividing and light regulating unit and a controlling unit;
the controlling unit and the area dividing and light regulating unit are electrically connected, and the area dividing and light regulating unit and the backlight module are electrically connected;
the area dividing and light regulating unit is configured for, when an area-delimitation controlling signal emitted by the controlling unit has been received, according to the area-delimitation controlling signal, dividing the backlight source into the plurality of light areas;
the controlling unit is configured for acquiring and storing the pixel quantities and the pixel grayscale values of the pixels within the pixel areas corresponding to each of the light areas; according to the pixel quantities and the pixel grayscale values, determining the brightness parameters of the light areas; and emitting the area-delimitation controlling signal and a light regulating signal; and
the area dividing and light regulating unit is further configured for, after the light regulating signal has been received, acquiring the brightness parameters, and according to the brightness parameters, regulating the brightnesses of the light areas;
the system further comprises a display panel, the display panel is located on a light exiting side of the backlight module, and the display panel is electrically connected to the controlling unit;
the controller further comprises a color compensating unit, and the color compensating unit is electrically connected to the controlling unit;
the color compensating unit is configured for:
according to the light areas in a lightening state, determining a compensation area of the display panel; and
determining a compensating parameter of the compensation area; and
the controlling unit is further configured for, according to the compensating parameter, performing brightness regulation to the compensation area;
the color compensating unit comprises a first determining subunit and a second determining subunit;
the first determining subunit is configured for determining a displayed frame in the display panel corresponding to the light areas in the lightening state; according to frame pixels in the displayed frame, determining edge pixels; determining a quantity of the frame pixels; and according to the quantity of the frame pixels, determining a compensation area of the edge pixels, wherein the compensation area refers to an area where some of pixels other than the frame pixels among pixels corresponding to the light areas in the lightening state are located; and
the second determining subunit is configured for determining a pixel quantity of the compensation area; when the pixel quantity of the compensation area is less than a quantity of brightness-compensation ranks, determining the compensating parameter of the compensation area to be a zero grayscale; and when the pixel quantity of the compensation area is greater than or equal to the quantity of the brightness-compensation ranks, dividing the compensation area into a plurality of compensating sub-areas, wherein a quantity of the compensating sub-areas is equal to the quantity of the brightness-compensation ranks;
wherein pixels in a same compensating sub-area correspond to a same brightness-compensation ranks, the compensating parameters in a same brightness-compensation ranks are equal, and the compensating parameters in the brightness-compensation ranks are greater than or equal to a zero grayscale, and less than pixel grayscales of the edge pixels.