Biaxial film having local birefringence that varies periodically
US7724330B2 · kind B2 · utility
3Cited by
2References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2005 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Dec 7, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133634
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to an optically biaxial film comprising an anisotropic material with deformed helically twisted structure and locally varying birefringence, to methods and materials for its preparation, to its uses as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.