Cellulose ester film, protective film for a polarizing plate of liquid crystal display and production method of cellulose ester film
US6828006B2 · kind B2 · utility
5Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2003 |
| Grant date | Dec 7, 2004 |
| Priority date | — |
| Expiry date | Sep 25, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31971
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.05 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.