Illumination for a scattering type liquid crystal display
US4668049A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1984 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Dec 18, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/127
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flat panel liquid crystal display for use in providing single or multi-color display images. The display comprises one or more ultraviolet light sources, a light pipe assembly which includes a plurality of liquid crystal cells that may be addressed via an array of transparent row and column electrodes, and a viewing screen having a plurality of phosphor elements that are located in close proximity and in registry with respective liquid crystal cells. Those phosphor elements and only those phosphor elements that are associated with liquid crystal cells that are in their scattering states are illuminated to form the image to be displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.