Method and device for driving electrooptical light shutter
US4932761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1988 |
| Grant date | Jun 12, 1990 |
| Priority date | — |
| Expiry date | Aug 4, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/34
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of and a device for driving a light shutter having an electrooptical effect to polarize an incident light by applying an electric field to the light shutter. When the light shutter is made activate, an excessive electric field in addition to a half-wave electric field which is a specific one to polarize an incident light at 90.degree. in the static characteristics of the light shutter is applied to the light shutter initially, and subsequently, the half-wave electric field only is applied to the light shutter. To discharge the electric charge accumulated in the light shutter, no voltage is applied to electrodes each of which is provided on the wall of the light shutter so as to oppose each other subsequent to the application of the electric field until the next application thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.