Protective film of a polarizing plate
US7125918B2 · kind B2 · utility
11Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 2002 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Oct 24, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133528
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A protective film of a polarizing plate comprising a cellulose ester film, wherein a variation in a weight of the cellulose ester film is 0 to 2% under a keeping condition of 80±5° C. and 90±10% RH for 48 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.