Cholesteric writing board display device
US9229259B2 · kind B2 · utility
1Cited by
10References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2013 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Nov 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0486
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A cholesteric liquid crystal writing board display device includes a plurality of cholesteric liquid crystal writing tablets and a front cover layer extending over the cholesteric liquid crystal writing tablets. The cholesteric liquid crystal writing tablets are tiled together by the front cover layer such that the writing board display device appears nearly seamless. Or, the writing tablets can be spaced apart from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.