Sample and hold circuit for drivers of an active matrix display
US5903250A · kind A · utility
13Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1996 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Oct 17, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3688
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The number of external column driver chip can be reduced to one in an active matrix liquid crystal display with column input multiplexing driving scheme. At least two sample and hold circuits are used for each column with alternate sampling and holding periods. Video signals are sampled and held at least twice during one line scanning time. These sample and hold circuits are all integrated in the driver chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.