Liquid crystal optical modulation element, and color filter and liquid crystal display device using the same
US6894743B1 · kind B1 · utility
2Cited by
3References
47Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2000 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Jan 27, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical modulation element includes a liquid crystal layer, white light source, and at least one flat mirror. The liquid crystal layer has a helix pitch and is held between a pair of transparent substrates having opposing transparent electrodes. The white light source sends white light onto a surface of one of the transparent substrates of the liquid crystal layer in an oblique direction. The flat mirror is arranged outside the other one of the transparent substrates to reflect the incident light transmitted through the liquid crystal layer toward the light source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.