US 11,688,340 B2
Gamma debugging method and apparatus
Yuanzhang Zhu, Beijing (CN); Guoqiang Wu, Beijing (CN); and Ting Han, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/797,830
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Oct. 22, 2021, PCT No. PCT/CN2021/125810
§ 371(c)(1), (2) Date Aug. 5, 2022,
PCT Pub. No. WO2022/100416, PCT Pub. Date May 19, 2022.
Claims priority of application No. 202011245631.1 (CN), filed on Nov. 10, 2020.
Prior Publication US 2023/0058388 A1, Feb. 23, 2023
Int. Cl. G09G 3/3225 (2016.01); G09G 3/20 (2006.01)
CPC G09G 3/3225 (2013.01) [G09G 3/2074 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0693 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A gamma debugging method, applied to a display panel, wherein the display panel comprises a first display region and a second display region, and the second display region has a pixel density lower than a pixel density of the first display region, and the gamma debugging method comprises:
obtaining a predetermined gamma data set of the first display region;
selecting a test display region in the first display region, taking part of sub-pixels in the test display region as test sub-pixels, and performing gamma debugging on the test sub-pixels to obtain a first gamma data set by causing the test sub-pixels to light up and sub-pixels in the test display region other than the test sub-pixels not to emit light and adjusting analog data voltages provided to the test sub-pixels, where the test sub-pixels positionally correspond to sub-pixels in the second display region;
controlling all the sub-pixels in the test display region and all sub-pixels in the second display region to emit light, and detecting a target luminance and a target chrominance of the test display region that correspond to a corresponding grayscale;
performing gamma debugging on the second display region, such that at the corresponding grayscale, a luminance of the second display region is the target luminance, and a chrominance of the second display region is the target chrominance, and accordingly obtaining a second gamma data set; and
obtaining, based on the second gamma data set, the first gamma data set and the predetermined gamma data set, a third gamma data set applied to the second display region by obtaining a difference gamma data set based on the second gamma data set, the first gamma data set and the predetermined gamma data set.