US 12,379,630 B2
Liquid crystal handwriting board and manufacturing method therefor
Jiaxing Wang, Beijing (CN); Jian Wang, Beijing (CN); Xiaojuan Wu, Beijing (CN); Hongliang Yuan, Beijing (CN); Xiuliang Wang, Beijing (CN); Yao Bi, Beijing (CN); Jinshuai Duan, Beijing (CN); Feng Liu, Beijing (CN); Cuiyu Chen, Beijing (CN); Yang Ge, Beijing (CN); Zhilong Duan, Beijing (CN); Zhiqiang Yu, Beijing (CN); and Tianyang Han, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN); BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and SHANDONG LANBEISITE EDUCATIONAL EQUIPMENT GROUP, Shandong (CN)
Appl. No. 18/019,244
Filed by BOE Technology Group Co., Ltd., Beijing (CN); Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and Shandong Lanbeisite Educational Equipment Group, Shandong (CN)
PCT Filed Jan. 29, 2022, PCT No. PCT/CN2022/075125
§ 371(c)(1), (2) Date Feb. 2, 2023,
PCT Pub. No. WO2023/142092, PCT Pub. Date Aug. 3, 2023.
Prior Publication US 2024/0272467 A1, Aug. 15, 2024
Int. Cl. G02F 1/1347 (2006.01); G02F 1/1333 (2006.01); G02F 1/1362 (2006.01); G02F 1/1335 (2006.01); G02F 1/1343 (2006.01); G02F 1/1368 (2006.01); G02F 1/139 (2006.01)
CPC G02F 1/1347 (2013.01) [G02F 1/1333 (2013.01); G02F 1/1362 (2013.01); G02F 1/133305 (2013.01); G02F 1/13338 (2013.01); G02F 1/133512 (2013.01); G02F 1/133514 (2013.01); G02F 1/133528 (2013.01); G02F 1/134309 (2013.01); G02F 1/13439 (2013.01); G02F 1/1368 (2013.01); G02F 1/1391 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A liquid crystal handwriting board, comprising: a first substrate, a second substrate disposed on a side of the first substrate, a third substrate disposed on a side of the first substrate away from the second substrate, a first liquid crystal layer disposed between the first substrate and the second substrate, and a second liquid crystal layer disposed between the first substrate and the third substrate; wherein
the first substrate comprises: a first base, and a first pixel electrode and a transparent electrode that are disposed on a side of the first base close to the second substrate, wherein the first pixel electrode is insulated from the transparent electrode, and the first pixel electrode is closer to the second substrate than the transparent electrode is;
wherein the first substrate, the first liquid crystal layer and the second substrate are configured to form a display portion of the liquid crystal handwriting board; and the first substrate, the second liquid crystal layer and the third substrate are configured to form a writing portion of the liquid crystal handwriting board;
wherein the transparent electrode is a shield electrode, and the first substrate further comprises a second pixel electrode disposed on a side of the transparent electrode close to the first base, wherein the second pixel electrode is insulated from the transparent electrode;
wherein a plurality of first pixel electrodes and a plurality of second pixel electrodes are provided, wherein one of the second pixel electrodes corresponds to at least one of the first pixel electrodes; and
wherein an orthographic projection of the first pixel electrode on the first base is within an orthographic projection of the corresponding second pixel electrode on the first base.