Projection-type color display device having a driving circuit for producing a mirror-like image
US5191450A · kind A · utility
45Cited by
29References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1992 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Apr 3, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3105
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection-type display device for producing a synthesized symmetrical projected image. The device includes three liquid crystal light valves associated with the three primary colors producing three separate images. One of the light valves is horizontally scanned in a direction opposite to the horizontal scanning direction of the other two light valves. The two images produced by the light valves which scan in the same horizontal direction are mirror images of the image produced by the third light valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.