Liquid crystal handwriting board
US12366783B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 24, 2023 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | May 24, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1391
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.