Spatial light modulator and a method for driving the same
US6388649B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1994 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Mar 24, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/36
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosed spatial light modulator includes a pair of facing transparent electrodes, and a light-modulating layer and a photoconductive layer provided between the transparent electrodes In the spatial light modulator, the light-modulating layer has different optical states depending on an applied charge amount. Specifically, the light-modulating layer has: a first optical state when the applied charge amount is a first threshold charge amount or more; a second optical state when the applied charge amount is a second threshold charge amount or less; and a spatially uniform intermediate state between the first optical state and the second optical state depending on the applied charge amount. Also, a driving method for such a spatial light modulator is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.