Image display device
US6952195B2 · kind B2 · utility
61Cited by
13References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 12, 2001 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Jun 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/145
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The image display device includes a liquid crystal display device having a liquid crystal panel and a backlight and a backlight controller for allowing the backlight of the liquid crystal display device to be bright when environment light is bright and allowing the backlight to be dark when the environment light is dark such that light leak (minimum luminance) which is defined by an extinction ratio of liquid crystal will not grow more than a specified degree. The image display device enables displayed images to be really discernible regardless of brightness of environment light (surrounding light).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.