Transparent polymer film, and optical compensatory film, polarizer and liquid crystal display device comprising the transparent polymer film
US7755726B2 · kind B2 · utility
2Cited by
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20Claims
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Key dates
| Filing date | Aug 31, 2005 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | May 1, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A transparent polymer film satisfying Re<5, |Rth|<20, |Re(700)−Re(400)|<5, |Rth(700)−Rth(400)|<20, |Re(10%)−Re(80%)|<5, and |Rth(10%)−Rth(80%)|<15, and having a moisture permeability of at least 500 g/(m2·day) in terms of the thickness of 80 μm. The file is excellent in moisture resistance and having a small amount of optical anisotropy and capable of being directly stuck to a polarizing film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.