Method for producing optical compensating film, optical compensating film, circularly polarizing plate, and liquid crystal display
US7099082B2 · kind B2 · utility
6Cited by
1References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2002 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Feb 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133634
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided is a method for producing an optical compensating film, which comprises stretching a cellulose acetate film, the cellulose acetate film having a water content of 2.0 to 20.0% by weight, wherein the cellulose acetate for the film has an acetyl value of from 57.0% to 62.5%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.