Compensators for liquid crystal displays
US7110072B2 · kind B2 · utility
3Cited by
94References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2004 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Apr 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical stack includes a first liquid crystal layer and a j-retarder disposed on the liquid crystal layer. The j-retarder includes a simultaneous biaxially stretched polymeric film being substantially non-absorbing and non-scattering for at least one polarization state of visible light. The j-retarder has x, y, and z orthogonal indices of refraction where at least two of the orthogonal indices of refraction are not equal, an in-plane retardance being 100 nm or less and an absolute value for an out-of-plane retardance being 55 nm or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.