Ferroelectric liquid crystal matrix driving apparatus and method
US4770502A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1987 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Jan 6, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal matrix driving method capable of shortening the re-write time of a picture surfaces is disclosed. In accordance with this method, pixels are brought to the light ON state or OFF state by changing in advance the light transmission state by utilizing the bistability of the display of the ferroelectric liquid crystal, a voltage keeping the light ON state or an OFF voltage is then applied to the pixels when they are already in the ON state in accordance with a time-division driving method such as line sequence scanning driving or dot sequence scanning driving, and a voltage keeping the OFF state or an ON voltage is applied when the pixels are already in the OFF state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.