Source driver, source line drive circuit, and liquid crystal display device using the same
US6831620B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2000 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Oct 5, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0257
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object of the invention is to provide a liquid crystal display device capable of attaining smooth gray scale display and greatly improved display quality, free from the display problems of flicker and the like. The resistance division ratios for gray scale voltage generating resistors provided in the source driver of a source line drive circuit for applying gray scale voltages to pixels via source lines are optimized in accordance with a gray scale display characteristic, and the positive-side voltage resistance division ratios and the negative-side voltage resistance division ratios are set so as to be asymmetrical with one another in consideration of a level shift characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.