Liquid crystal handwriting board and manufacturing method therefor
US12379630B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 29, 2022 |
| Grant date | Aug 5, 2025 |
| Priority date | — |
| Expiry date | Jan 29, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1391
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided is a liquid crystal handwriting board. The liquid crystal handwriting board includes a first substrate, a second substrate, a third substrate, a first liquid crystal layer, and a second liquid crystal layer; wherein the first substrate includes: a first base, and a first pixel electrode and a transparent electrode, 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.