Liquid crystal display device
US4470669A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1981 |
| Grant date | Sep 11, 1984 |
| Priority date | — |
| Expiry date | Dec 22, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A thermally addressable liquid crystal display device is disclosed herein. The device comprises twin transparent plates with a liquid crystal element disposed between them. A transparent electrode film is provided onto the inside surface of the first transparent plate (the inside surface being that surface which is in contact with the liquid crystal element). Both a light-reflecting film and a light-absorbing single layer are provided onto the inside surface of the second transparent plate. This light-absorbing layer is formed of an inorganic semiconductor compound selected from the group of II-V group semiconductor compounds containing magnesium or calcium, II-V group semiconductor compounds containing zinc or cadmium, or II-VI group and V-VI group semiconductor compounds containing tellurium. Preferably, the light-absorbing layer has a thickness which satisfies the relationship EQU t=.lambda./4n.+-..lambda./20n such that the resulting image display is high in image resolution. Further, by providing to the display device a light absorption layer with a thickness as determined by the above-mentioned relationship, the overall reliability of the display device is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.