Optical films having matt property, films having a high transmittance, polarizing plates and liquid crystal display devices
US6559915B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2000 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Mar 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24372
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to an optical film having matt property and a matted film having a high transmittance which can be used for producing polarizing plates or liquid crystal display device excellent in display brightness and display quality by using the aforesaid films adjusted in a specific surface roughness or by using a specific two kinds of fine particles in a hard coat layer of the films. The present invention relates also to a polarizing plate of a high transmittance having an optical compensative capacity and matt property. A liquid crystal display device and a color liquid crystal display device using the aforesaid polarizing plate possessing an excellent viewing angle characteristics and is improved in Newton ring caused by contact with a light-tuning film and in non-uniformity in brightness due to the light-tuning film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.