Driving circuit and method for increasing effective bits of source drivers
US7379004B2 · kind B2 · utility
3Cited by
20References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 27, 2006 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Jan 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An LCD driving circuit and method for increasing effective bit(s) of the source driver is disclosed. A reference voltage generator generates a group of compensated reference voltage levels that are interlaced with original reference voltage level of original reference voltage generator. One of the multiple groups of reference voltage levels is selected by one or more least significant bits (LSBs), and is then inputted to digital-to-Analog converter of the source driver under control of the one or more least significant bits (LSBs), thereby effectively and economically enhancing the gray levels of the display on the LCD panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.