Source driving device of a liquid crystal display
US5523772A · kind A · utility
42Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | May 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0428
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A source driving device for a liquid crystal display which includes a mode conversion switch for selecting between a digital-to-analog of operation for applications requiring eight grey levels, and an analog-to-analog mode of operation for applications requiring more than eight grey levels. The source driver includes a shift register for sequentially enabling portions of stored image data to be processed in the digital-to-analog mode. The source driver also includes a sample and hold circuit for providing a regulated output of an analog image signal in the analog-to-analog.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.