Optical film and phase difference plate, and liquid crystal compound
US8293146B2 · kind B2 · utility
1Cited by
2References
14Claims
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Key dates
| Filing date | Feb 7, 2007 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2019/3408
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An optical film, which has been subjected to an orientation treatment, containing a low-molecular weight compound, in which a birefringence Δn(550 nm) is larger than zero (0) in an orientation direction, and the optical film satisfies the following expressions (1) and (2); and a phase difference plate, a polarizing plate and a liquid crystal display using the same:0.5<Δn(450 nm)/Δn(550 nm)<1.0; and Expression (1)1.05<Δn(630 nm)/Δn(550 nm)<1.5. Expression (2)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.