The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2025
Filed:
May. 24, 2023
Beijing Boe Optoelectronics Technology Co., Ltd., Beijing, CN;
Boe Technology Group Co., Ltd., Beijing, CN;
Shandong Lanbeisite Educational Equipment Group, Shandong, CN;
Yu Zhao, Beijing, CN;
Xiaojuan Wu, Beijing, CN;
Dawei Feng, Beijing, CN;
Zhiqiang Yu, Beijing, CN;
Yang Ge, Beijing, CN;
Jiaxing Wang, Beijing, CN;
Yao Bi, Beijing, CN;
Mengxun Yang, Beijing, CN;
Jian Wang, Beijing, CN;
Xiuliang Wang, Beijing, CN;
Tianyang Han, Beijing, CN;
Beijing BOE Optoelectronics Technology Co., Ltd., Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Shandong Lanbeisite Educational Equipment Group, Shandong, CN;
Abstract
A liquid crystal handwriting board is provided. The liquid crystal handwriting board includes a first substrate and a second substrate that are disposed opposite to each other, and a liquid crystal layer disposed between the first substrate and the second substrate; wherein the first substrate includes: a first base substrate, and a transistor and a pixel electrode disposed at a side, proximal to the second substrate, of the first base substrate, the transistor being electrically connected to the pixel electrode; wherein the transistor includes a channel region, wherein a ratio of an area of the channel region to an on-current of the transistor is greater than a ratio of an area of a channel region of a reference transistor to an on-current of the reference transistor.