Display device using time division modulation to display grey scale
US5986640A · kind A · utility
95Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1997 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Jun 23, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/0266
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A display device includes a deformable mirror device wherein grey scales are displayed using a time division modulation process in which the times or sub-frame periods for which each mirror within the deformable mirror array is switched on. The device includes a selection means for ordering selected sub-frame periods or divided sub-frame periods such that the light directed from each mirror is substantially temporally balanced during each frame period of the display device and/or between consecutive frame periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.