Stacked color photodisplay
US8199086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2008 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13478
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention comprises a stacked color photodisplay apparatus using a photosensitive cholesteric liquid crystalline material on which an image can be optically addressed, retained without degradation for an indefinite period of time, electrically erased and a new image addressed. This is similar to a photographic film except that the photodisplay film can be used over and over again similar to digital display but without the cost of addressing electronics. Included is a device for enhancing the brightness of the image and electrooptical devices for optically writing digital images on the photodisplay. Each cell in the stack can be selectively addressed with a different optical image such as the red, green and blue components of a color digital image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.