Liquid crystal display device and an optimum gradation voltage setting apparatus thereof
US7443369B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 29, 2004 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Dec 29, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0276
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device which favorably displays an image by eliminating irregularities of the γ characteristic for every manufactured liquid crystal panel. In the liquid crystal display device, when a power source is supplied thereto, a display control circuit installed therein reads out gradation voltage data corresponding to the liquid crystal panel stored in a ROM connected to the display control circuit and sets gradation voltages in a gradation voltage setting circuit installed therein. Further, upon receiving external control signals, the display control circuit sets gradation voltages in the gradation voltage setting circuit. When the set gradation voltages are inputted to a source driver section of the liquid crystal display device, the liquid crystal panel is driven and images are displayed thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.