Gamma correction apparatus for a liquid crystal display
US7095395B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Jul 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0276
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A gamma correction apparatus set in a liquid crystal display (LCD), comprising a gray-scale voltage generating circuit and a gamma correction circuit. The gray-scale voltage generating circuit includes the common gray-scale voltage generating circuit and a plurality of individual gray-scale voltage generating circuits, wherein every individual gray-scale voltage generating circuit generates individual gray-scale voltage and corresponds to one of the displaying colors of the pixels of the LCD panel. The gamma correction circuit, according to the corresponding color of the pixel signal, selects the common gray-scale voltage and the corresponding individual gray-scale voltages of the color, and then outputs a pixel voltage corresponding to the pixel signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.