Phase retarder film containing TiO.sub.2
US6097460A · kind A · utility
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12References
12Claims
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Key dates
| Filing date | Jan 20, 1999 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jan 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/3083
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A phase retarder film is provided wherein at least one oblique evaporation layer comprising an inorganic dielectric mainly containing TiO.sub.2 is formed on at least one surface of a transparent polymer film with an intermediate layer between, the evaporation layer having positive refractive index anisotropy and a principal optic axis tilted 20 degrees to 70 degrees from a normal direction to said transparent polymer film. The phase retarder film is suitable for improving viewing angle characteristics of the TN-LCD.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.