Method of driving an optical modulation device
US4901066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1987 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Dec 9, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2310/061
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method of driving an optical modulation device via scanning lines and signal lines a "selection period" of each scanning line is divided into at least four division periods. A voltage applied to a pixel allows the pixel to become a first stable state of bistable states of the pixel during third and second division periods from the last division period, and to either become a second stable state of the bistable states or hold the first state during the last division period. The scanning lines are scanned sequentially while at least two sequential scanning lines thereof may be applied with a same selection voltage at the same time, thereby reducing a time required for rewriting all pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.