Liquid crystal display device having particular degree of polarization
US4610508A · kind A · utility
1Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1984 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Jun 25, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133528
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a liquid crystal display device in which a twisted nematic type liquid crystal display element is used as a light shutter and combined with color polarizer plates to provide color display, characterized in that a nematic crystal added with a black coloring matter is used and in that at least one of the polarizer plates has a degree of polarization of about 80% or less. Preferably, the rate of addition of the black coloring matter is limited to about 1.5% or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.