US 12,461,628 B2
Liquid crystal writing board and method for repairing the same
Xiaoye Ma, Beijing (CN); Ruifang Du, Beijing (CN); Haijiao Qian, Beijing (CN); Huanhuan Huang, Beijing (CN); Chengshao Yang, Beijing (CN); and Ran Zhang, Beijing (CN)
Assigned to Hefei Xinsheng Optoelectronics Technology Co., Ltd., Anhui (CN); and Beijing BOE Technology Development Co., Ltd., Beijing (CN)
Appl. No. 18/687,099
Filed by Hefei Xinsheng Optoelectronics Technology Co., Ltd., Anhui (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Dec. 19, 2022, PCT No. PCT/CN2022/139854
§ 371(c)(1), (2) Date Feb. 27, 2024,
PCT Pub. No. WO2024/130463, PCT Pub. Date Jun. 27, 2024.
Prior Publication US 2025/0123712 A1, Apr. 17, 2025
Int. Cl. G02F 1/13 (2006.01); G02F 1/1333 (2006.01); G02F 1/1345 (2006.01); G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0418 (2013.01) [G02F 1/1309 (2013.01); G02F 1/13338 (2013.01); G02F 1/13454 (2013.01); G02F 1/136286 (2013.01); G02F 1/1368 (2013.01); G02F 2202/22 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A liquid crystal writing board, comprising a first substrate, a second substrate, and a bistable liquid crystal layer disposed between the first substrate and the second substrate,
wherein the first substrate comprises:
a plurality of first signal line groups, wherein the first signal line groups each comprise at least two first signal lines;
a plurality of second signal lines, wherein the second signal lines and the first signal lines intersect with each other; and
a control electrode disposed in an area surrounded by two adjacent first signal lines and two adjacent second signal lines, the first signal lines and the second signal lines being configured to jointly provide a control signal to the control electrode,
wherein the first signal lines in each first signal line group are electrically connected with each other;
wherein the liquid crystal writing board comprises a display area and a peripheral area surrounding the display area, and the peripheral area comprises a first peripheral sub-area and a second peripheral sub-area arranged opposite to each other;
wherein the first signal lines each comprise a first end portion, a second end portion, and a conductor segment between the first end portion and the second end portion, the first end portion being located at the first peripheral sub-area, the second end portion being located at the second peripheral sub-area, and the conductor segment being located at the display area;
wherein the first signal lines in each first signal line group are electrically connected with each other by at least one of:
the first end portions of the first signal lines in each first signal line group being electrically connected with each other; and
the second end portions of the first signal lines in each first signal line group being electrically connected with each other;
wherein the liquid crystal writing board comprises a first driver, and the first end portions of the first signal lines are all electrically connected to the first driver;
wherein the first substrate further comprises a plurality of second signal line groups, the second signal line groups each comprise at least two second signal lines, and the second signal lines in each second signal line group are electrically connected with each other;
wherein the peripheral area further comprises a third peripheral sub-area and a fourth peripheral sub-area arranged opposite to each other, and the third peripheral sub-area is arranged adjacent to the first peripheral sub-area;
wherein the second signal lines each comprise a first end portion, a second end portion, and a conductor segment between the first end portion and the second end portion, the first end portion being located at the third peripheral sub-area, the second end portion being located at the fourth peripheral sub-area, and the conductor segment being located at the display area;
wherein the second signal lines in each second signal line group are electrically connected with each other by at least one of:
the first end portions of the second signal lines in each second signal line group being electrically connected with each other; and
the second end portions of the second signal lines in each second signal line group being electrically connected with each other.