Image display device and projector
US7973781B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2007 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/312
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an image display device with a two-modulation optical system for displaying an image corresponding to input image signals. The image display device includes a first optical modulation element for turning on or off pixels every subfield in the unit of plane; and second optical modulation elements for displaying gradation of the pixels in the unit of line, the first optical modulation element and the second optical modulation element are arranged optically in series; a second optical modulation element drive unit for driving the second optical modulation elements in a line-sequential manner; and a first optical modulation element drive unit for generating a control signal for controlling the pixels in lines disposed to correspond to the unit of single or several lines of the line-sequential driving of the second modulation elements with a driving interval in the unit of single or several lines and controlling the first optical modulation element in synchronism with the unit of single or several lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.