Compensators for liquid crystal displays with biaxially stretched single film with crystallization modifier
US7405784B2 · kind B2 · utility
2Cited by
114References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 12, 2003 |
| Grant date | Jul 29, 2008 |
| Priority date | — |
| Expiry date | Feb 12, 2023 |
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 biaxally 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 out-of-plane retardance being 50 nm or greater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.