Liquid crystal display apparatus having light collecting mechanism
US6888528B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Jul 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/144
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display apparatus includes a liquid crystal display panel having preset display characteristics, such as image brightness and contrast. A luminescent unit is optically connected with the display panel and provides light to the display panel in order to form an image on the display panel. The luminescent unit includes a light collector which collects ambient light and a light source, for generating light when the amount of ambient light is insufficient to generate a clear image. A control circuit is electrically connected to the display panel and automatically varies the preset display characteristics in accordance with the amount of ambient light collected by the light collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.