US 11,940,701 B2
Writing panel and manufacturing method therefor, and writing board
Xiaojuan Wu, Beijing (CN); Jiaxing Wang, Beijing (CN); Yang Ge, Beijing (CN); Yu Zhao, Beijing (CN); Jian Wang, Beijing (CN); and Hao Yan, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/923,708
Filed by BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Oct. 12, 2021, PCT No. PCT/CN2021/123344
§ 371(c)(1), (2) Date Nov. 7, 2022,
PCT Pub. No. WO2022/111092, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 202011341890.4 (CN), filed on Nov. 25, 2020.
Prior Publication US 2023/0185143 A1, Jun. 15, 2023
Int. Cl. G02F 1/1368 (2006.01); G02F 1/1362 (2006.01); G02F 1/137 (2006.01)
CPC G02F 1/1368 (2013.01) [G02F 1/136295 (2021.01); G02F 1/13718 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A writing panel, comprising:
an array substrate, the array substrate including a base and a pixel driving circuit layer disposed on the base, the pixel driving circuit layer including a plurality of thin film transistors and a plurality of signal lines;
a flexible substrate disposed opposite to the array substrate;
a liquid crystal layer disposed between the array substrate and the flexible substrate; and
a plurality of spacers each in a shape of a column disposed on a surface of the array substrate proximate to the liquid crystal layer, an orthographic projection of each spacer on the base being non-overlapping with orthographic projections of the plurality of thin film transistors and the plurality of signal lines on the base,
wherein the writing panel has a plurality of pixel regions;
each pixel region is provided with some of the plurality of spacers therein, and the some of the plurality of spacers are arranged in an array; and
a row direction of the array in which the some of the plurality of spacers are arranged is a first direction, and a column direction of the array in which the some of the plurality of spacers are arranged is a second direction;
in a pixel region of the pixel regions, a distance between two spacers adjacent to each other in the first direction is approximately equal to a distance between two spacers adjacent to each other in the second direction; and
a distance between two nearest spacers that are respectively located in two pixel regions adjacent to each other in the first direction is approximately equal to a distance between two nearest spacers that are respectively located in two pixel regions adjacent to each other in the second direction.