Negative retardation film
US7477343B2 · kind B2 · utility
2Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2007 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jun 5, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/15
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a negative birefringent retardation film comprising polymerised liquid crystal (LC) material with helically twisted structure and planar orientation, its use in compensators and electrooptical displays like liquid crystal displays, and to compensators and liquid crystal displays comprising such a negative retardation film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.