Diffusing matrix liquid crystal display screen
US5617231A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1995 |
| Grant date | Apr 1, 1997 |
| Priority date | — |
| Expiry date | Jun 16, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133512
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display screen which includes a first transparent plate covered with an electrode array and a second transparent plate covered with a counter-electrode. A liquid crystal film is inserted between the first and second plates. Further, either of the first or second transparent plates is covered with a material coating which diffuses ambient light with a brightness which exceeds a brightness of the liquid crystal film in the absence of excitation. This coating may take the form of a metal, a white mineral pigment or a polymer film which contains surface microcracks. Such a liquid crystal display screen as in the present invention may find particular applications to terminals, computers, pocket calculators, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.