US 12,347,369 B2
Method for optimizing image quality and module for optimizing image quality
Jiayi Wang, Beijing (CN); Tsanghong Wang, Beijing (CN); Zhoujun Chen, Beijing (CN); and Yurun Miao, Beijing (CN)
Assigned to Mianyang BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/908,103
Filed by Mianyang BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Nov. 15, 2021, PCT No. PCT/CN2021/130579
§ 371(c)(1), (2) Date Aug. 30, 2022,
PCT Pub. No. WO2022/156326, PCT Pub. Date Jul. 28, 2022.
Claims priority of application No. 202110087209.6 (CN), filed on Jan. 22, 2021.
Prior Publication US 2023/0079286 A1, Mar. 16, 2023
Int. Cl. G09G 3/3225 (2016.01)
CPC G09G 3/3225 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0673 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method for optimizing image quality, applied to a display panel comprising a plurality of sub-pixels and comprising:
controlling and setting, in a gamma adjustment phase, actual data voltages corresponding to a grey scale 0 of respective sub-pixels having different colors, and controlling at least two of the actual data voltages corresponding to the grey scale 0 of the sub-pixels having different colors to be different from each other, to control a gamma curve of the sub-pixels to make an absolute value of a luminance difference between luminance of the gamma curve corresponding to each grey scale value and luminance of a standard gamma curve corresponding to the grey scale value less than a predetermined luminance difference; the predetermined luminance difference is greater than 0; and
the method further comprises:
detecting a luminance range of the display panel;
when the luminance range of the display panel is within a predetermined luminance range, applying, in a display phase, when a grey scale value provided to the sub-pixels having different colors is 0, the corresponding actual data voltages to the sub-pixels having different colors;
when the luminance range of the display panel is not within the predetermined luminance range, applying, in the display phase, when the grey scale value provided to the sub-pixel is 0, a predetermined data voltage to the sub-pixels;
wherein a development verification phase is further comprised before the gamma adjustment phase, and the method for optimizing image quality further comprises:
synchronously adjusting, in the development verification phase, when the temperatures of the display panel are in different temperature ranges, data voltages applied to all the sub-pixels having different colors in a pixel of the display panel to detect critical voltages of the pixel and obtain a maximum critical voltage; wherein the critical voltage of the pixel is a voltage when the pixel is switched from not emitting light to emitting light;
setting, in the gamma adjustment phase, the actual data voltages corresponding to the grey scale 0 according to the maximum critical voltage;
wherein the synchronously adjusting, in the development verification phase, when the temperatures of the display panel are in different temperature ranges, data voltages applied to all the sub-pixels having different colors in a pixel of the display panel to detect critical voltages of the pixel and obtain a maximum critical voltage, comprises:
when the temperatures of the display panel are in different temperature ranges, detecting critical voltages of the pixel, and setting a maximum one of the critical voltages in the different temperature ranges as the maximum critical voltage;
wherein black image data voltages are the actual data voltages corresponding to the grey scale 0.