Display device with a white-optimizing bistable nematic screen and method for the definition of said device
US7532275B2 · kind B2 · utility
1Cited by
8References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Mar 7, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1391
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a nematic liquid crystal display having two stable states, without an electric field, obtained by anchoring break, characterized in that it comprises two polarizers (10, 40), one (10) of which is placed on the observer side, the other (40) being placed on the opposite side of the liquid crystal cell whereby the latter is at least partially reflecting in order to define a reflective mode or transflective mode. The orientation of the two polarizers (10, 40) is offset by a value which is equal to the rotatory power of the cell at approximately +/−30°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.