Light scan type display device having light waveguides and photo conductive switching elements
US5541751A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1993 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Dec 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133526
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The light scan type display device includes a display medium laid between two opposed substrates, which is driven in response to a light signal. One of the substrates has plural light waveguides provided in parallel and for transmitting a light signal, plural signal electrodes ranged in parallel and orthogonally with the light waveguides and for transmitting a light signal, pixel electrodes formed in a matrix manner, and light switching elements formed of a photoconductive material at crosspoints between the signal electrodes and the light waveguides in a manner to abut on the signal electrodes and the pixel electrodes. Further, the one substrate includes micro lenses for condensing ambient light to pixel openings. The micro lenses serve to condense the light from the backlight onto the pixels for prevent intrusion of any other light except the light scan signal into the switching element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.