Polymer film, and optically-compensatory film, polarizer and liquid-crystal display device comprising the same
US9091804B2 · kind B2 · utility
1Cited by
4References
17Claims
0Family size
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Key dates
| Filing date | Aug 5, 2005 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polymer film that has an in-plane retardation Re(λ) and a thickness-direction retardation Rth(λ) satisfying formula (i) and (ii), and that further has a surface energy of at least one surface is from 50 mN/m to 80 mN/m:0≦Re(630)≦10, and |Rth(630)|≦25; and (i)|Re(400)−Re(700)|≦10, and |Rth(400)−Rth(700)|≦35. (ii)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.