TN-mode liquid crystal display device, optical compensatory film for use therein and method for producing optical compensatory film, and polarizing plate
US8184247B2 · kind B2 · utility
1Cited by
1References
19Claims
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Key dates
| Filing date | Jul 8, 2009 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Nov 24, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical compensatory film of a laminated structure comprising a first optically anisotropic layer having an Re(550) of 20 to 100 nm wherein retardation at a wavelength of 550 nm is never 0 nm along any direction and the direction along which the absolute value of retardation at a wavelength of 550 nm reaches minimum does not exist along the normal direction of the layer or on the in-plane of the layer; and a second optically anisotropic layer having an Re(550) of 20 to 150 nm and an Rth(550) of 40 to 110 nm with Re(450) Re(550)<−3 nm and Rth(450)−Rth(550)>3 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.