Optical film and liquid crystal display device using the film
US5600462A · kind A · utility
160Cited by
10References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1993 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Sep 14, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0068
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The liminance within the viewing angle of an LCD device is increased by using an optical film of transparent material. The film has a first surface having a wave structure including a plurality of isosceles triangle prisms arranged side-by-side, and a second surface having an optically rough structure for performing diffuse transmission. The film may also have a first surface having a structure including a plurality of quadrangular prisms arranged side-by-side, and a second surface having an optically rough structure for performing diffuse transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.