LCD with integrated switches for DC restore
US7138993B2 · kind B2 · utility
5Cited by
16References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2003 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Feb 4, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/026
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An AC-coupled display driver circuit includes one or more DC-restore switches that are integrated within a liquid crystal display. A liquid crystal display system includes a coupling capacitor coupled at one end to a system input video signal, the coupling capacitor providing a display input video signal having a DC level offset. A liquid crystal display device coupled to another end of the coupling capacitor receives the first display input video signal at a video input for driving the display device. A switch integrated within the display device provides DC restore to the coupling capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.