Color liquid crystal display device
US5216414A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1990 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Nov 15, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1396
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A color liquid crystal display device in which a color filter is provided over the entire surface of the glass substrate. In a first embodiment, display electrodes extend over a plurality of color filter sectors to form segment electrodes. In a second embodiment, the transmissivity of light passing through the liquid crystal layer can be varied in levels by making the display electrodes in two-layer, operating voltage on each of the electrodes independently, and varying in levels the amplitude of voltage applied on the liquid crystal layer by the display electrodes. In a third embodiment, the amount of light transmitted in the display area of a color filter sector is controlled by two or more display electrodes which divide up the display area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.