US 11,688,338 B2
Display device, luminance compensation circuit thereof and luminance compensation method
Lei Feng, Beijing (CN); Guoqiang Wu, Beijing (CN); Chenghao Liao, Beijing (CN); Yanni Jiang, Beijing (CN); and Chungkee Cheng, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/430,234
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Nov. 13, 2020, PCT No. PCT/CN2020/128734
§ 371(c)(1), (2) Date Aug. 11, 2021,
PCT Pub. No. WO2022/099624, PCT Pub. Date May 19, 2022.
Prior Publication US 2022/0157236 A1, May 19, 2022
Int. Cl. G09G 3/3225 (2016.01)
CPC G09G 3/3225 (2013.01) [G09G 2300/0439 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0673 (2013.01); G09G 2330/021 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A luminance compensation method for a display device, the display device comprising:
a display region; and
a peripheral region located on a periphery of the display region,
wherein the display region comprises a first pixel region and a second pixel region, a pixel density of the second pixel region is lower than a pixel density of the first pixel region; the luminance compensation method comprises:
obtaining first light-emitting luminance information of the first pixel region and second light-emitting luminance information of the second pixel region; and
adjusting a power supply signal of the first pixel region and/or a power supply signal of the second pixel region, respectively, according to the first light-emitting luminance information of the first pixel region and the second light-emitting luminance information of the second pixel region,
wherein the power supply signal comprises a first power supply signal, the first power supply signal is configured to generate a drive signal for driving pixels to emit light,
wherein the power supply signal further comprises a second power supply signal, and a cathode of each pixel in the display device is connected to the second power supply signal, and
wherein when the power supply signal comprises the first power supply signal and the second power supply signal, the adjusting the power supply signal of the first pixel region and/or the power supply signal of the second pixel region, respectively, comprises:
when it is determined that light-emitting luminance of the first pixel region is lower than light-emitting luminance of the second pixel region according to the first light-emitting luminance information of the first pixel region and the second light-emitting luminance information of the second pixel region;
increasing a voltage value of the first power supply signal of the first pixel region and/or decreasing a voltage value of the first power supply signal of the second pixel region; and
decreasing a voltage value of the second power supply signal of the first pixel region and/or increasing a voltage value of the second power supply signal of the second pixel region.