US 11,852,921 B2
Alignment deviation detection method and apparatus thereof, data compensation method and apparatus thereof
Yanhui Xi, Beijing (CN); Tiankuo Shi, Beijing (CN); Yan Sun, Beijing (CN); Xiaomang Zhang, Beijing (CN); Yifan Hou, Beijing (CN); Xin Duan, Beijing (CN); Wei Sun, Beijing (CN); Ming Chen, Beijing (CN); Wenchieh Huang, Beijing (CN); and Shaoru Zhang, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/310,849
Filed by BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Mar. 27, 2020, PCT No. PCT/CN2020/081669
§ 371(c)(1), (2) Date Aug. 26, 2021,
PCT Pub. No. WO2021/189421, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2022/0283466 A1, Sep. 8, 2022
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13 (2006.01); G09G 5/10 (2006.01)
CPC G02F 1/133607 (2021.01) [G02F 1/1323 (2013.01); G09G 5/10 (2013.01); G09G 2320/0626 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An alignment deviation detection method of a display panel, wherein the display panel comprises a dimming screen and a display screen, and the dimming screen is on a backlight side of the display screen and is configured to perform backlight modulation on the display screen, the alignment deviation detection method comprises:
providing a first data signal for causing the dimming screen to display an alignment dimming picture comprising a first alignment pattern;
providing a second data signal for causing the display screen to display an alignment display picture comprising a second alignment pattern;
under a control of the first data signal, making the dimming screen display the alignment dimming picture, and under a control of the second data signal, making the display screen display the alignment display picture;
according to a display situation of the second alignment pattern in the alignment display picture, determining an alignment state between the display screen and the dimming screen,
wherein an orthographic projection of the second alignment pattern on the dimming screen is preset to be at least partially aligned with the first alignment pattern and at least partially deviated from the first alignment pattern.