Stretched optical compensation film
US9804314B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2016 |
| Grant date | Oct 31, 2017 |
| Priority date | — |
| Expiry date | Jul 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/113
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a stretched optical compensation film which is a phase difference film containing a cellulose-based resin and having excellent optical properties. The stretched optical compensation film of the present invention contains 0.5 to 30 parts by mass of a β-diketone compound represented by Formula (I) with respect to 100 parts by mass of the cellulose-based resin. Positions R1 and R2 each independently represent an alkyl group having 1 to 20 carbon atoms which is optionally substituted, an arylalkyl group having 7 to 20 carbon atoms which is optionally substituted or an aryl group having 6 to 20 carbon atoms which is optionally substituted. Position R3 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.