Liquid crystal display device and method of driving a liquid crystal display element
US6414666B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of driving a liquid crystal display element having a first substrate provided with a scanning electrode, a second substrate provided with a signal electrode and a liquid crystal display layer held between the first and second substrates, the method comprising the steps of:(a) applying a first pulse voltage to the scanning electrode corresponding to a drive target pixel in the liquid crystal display layer for changing the liquid crystal material of the target pixel to a predetermined changed state;(b) applying, subsequent to the step (a), a second pulse voltage to the scanning electrode corresponding to the target pixel; and(c) controlling a pulse width of a third pulse voltage in accordance with a required display tone of the target pixel, and applying the third pulse voltage to the signal electrode corresponding to the target pixel in synchronization with the second pulse voltage for stabilizing the state of the liquid crystal material of the target pixel in a predetermined stabilized state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.