Color filter layer of a liquid crystal display
US5039204A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1990 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | May 23, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133512
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a liquid crystal display comprising upper and lower transparent glass substrates, an array of thin film transistors and a liquid crystal layer sealingly filled between said upper and lower glass substrates, a color filter layer if provided, comprising, a plurality of color filters laid in a mosaic pattern on the upper glass substrate, said color filters comprising red, green and blue dyes said color filter layer further comprising, a black matrix disposed between said color filters to block the light rays incident between them, and lower glass substrates, a color filter layer comprising a said black matrix having a three-layer structure comprising a silicon nitride film, a light absorbing layer and a chromium layer sequentially deposited on said upper glass substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.