Optical compensation films with disk groups for liquid crystal display
US7989036B2 · kind B2 · utility
2Cited by
9References
17Claims
0Family size
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Key dates
| Filing date | Mar 29, 2007 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Sep 15, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical compensation films (positive C-plate) with disk anisotropic subunits (OASUs) that have high positive birefringence throughout the wavelength range 400 nm<λ<800 nm are provided. The optical compensation films may be processed by solution casting to yield a polymer film with high birefringence without the need for stretching, photopolymerization, or other processes. Such optical compensation films are suitable for use as a positive C-plate in LCDs, particularly IPS-LCDs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.