Voltage generating circuit, and common electrode drive circuit, signal line drive circuit and gray-scale voltage generating circuit for display devices
US6509895B2 · kind B2 · utility
23Cited by
34References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Jul 30, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drive circuit for a display device supplying a plurality of gray-scale voltages to the display device, based on externally supplied digital video signal data, includes: a plurality of gray-scale power supplies, a plurality of drive power supplies, a unit for forming a first part of the plurality of gray-scale voltages using the gray-scale voltage power supplies, and a unit for forming a second part of the plurality of gray-scale voltages using the drive power supplies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.