Driving method for liquid crystal device
US6703993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2001 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | May 15, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A driving method for a liquid crystal device comprising a pair of electrodes and a liquid crystal disposed between the electrodes includes a sequence of voltage application operations each comprising application of a reset voltage to the liquid crystal for placing the liquid crystal in a reset state in a reset period and application of a data voltage to the liquid crystal for placing the liquid crystal in a desired gradational display state in a writing period subsequent to the reset period. Each reset voltage is set to provide a prescribed difference in voltage between the each reset voltage and a subsequent data voltage, thus preventing an image memory phenomenon without using an additional reset circuit for exclusively applying the reset voltage to the liquid crystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.