US 12,254,851 B2
Brightness detection method for display devices, display device and readable medium
Yilin Feng, Beijing (CN); Zhaohui Meng, Beijing (CN); Yuxin Bi, Beijing (CN); Zhengri Lin, Beijing (CN); and Yang Gao, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/018,730
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jan. 29, 2022, PCT No. PCT/CN2022/075050
§ 371(c)(1), (2) Date Jan. 30, 2023,
PCT Pub. No. WO2023/142059, PCT Pub. Date Aug. 3, 2023.
Prior Publication US 2024/0127768 A1, Apr. 18, 2024
Int. Cl. G09G 5/10 (2006.01)
CPC G09G 5/10 (2013.01) [G09G 2320/0673 (2013.01); G09G 2320/0693 (2013.01); G09G 2330/12 (2013.01); G09G 2360/144 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A brightness detection method, comprising:
using each of display modules in a display module production line as a test module separately, wherein the test module is provided with a photosensitive sensor;
obtaining a brightness algorithm formula of the photosensitive sensor of each of the test module; and
performing, according to the brightness algorithm formula, ambient light detection by the photosensitive sensor,
wherein the obtaining of the brightness algorithm formula of the photosensitive sensor of each of the test module comprises:
performing sampling for a plurality of times within a standard illuminance value region to obtain a plurality of groups of sampling data, wherein each group of sampling data comprises a standard illuminance value Y and a current parameter X fed back by the photosensitive sensor under the standard illuminance value Y;
dividing, according to a size of the standard illuminance value Y, the plurality of groups of sampling data into sampling data in a low-brightness interval, sampling data in a middle-brightness interval and sampling data in a high-brightness interval;
performing segmented curve fitting according to the sampling data in the low-brightness interval, the sampling data in the middle-brightness interval and the sampling data in the high-brightness interval, to obtain a first curve segment corresponding to the sampling data in the low-brightness interval, a second curve segment corresponding to the sampling data in the middle-brightness interval, and a third curve segment corresponding to the sampling data in the high-brightness interval;
combining the first curve segment, the second curve segment and the third curve segment to obtain a brightness fitting curve; and
outputting, according to the brightness fitting curve, a first version of brightness algorithm formula.