Liquid crystal display driver
US5675352A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Sep 7, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In accordance with one aspect of the invention, a liquid crystal display driver for driving liquid crystal display electrodes, comprises: a voltage signal generator adapted to provide a predetermined voltage signal to the liquid crystal display electrodes, the voltage signal generator being further adapted to be activated when the voltage signal level of said electrodes is outside a predetermined dead zone region, the voltage signal generator being deactivated when the voltage signal level of the electrodes is substantially within the predetermined dead zone region; and a switch adapted to couple the voltage signal generator to at least one of said liquid crystal display electrodes. In accordance with another aspect of the invention, a method for providing voltage signals to electrodes of a liquid crystal display, comprising the steps of activating a first voltage signal generator to provide a voltage signal for the electrodes when the voltage signal level of the ectrodes falls outside a dead zone region; and deactivating the first voltage signal generator when the voltage signal level of the electrodes falls within the dead zone region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.