Light scan type display device having light waveguides and photo

Details Light scan type display device having light waveguides and photo Light scan type display device having light waveguides and photo

1993-12-08

1996-07-30

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 40, G02F 1133, G02F 11335

Patent

active

055417515

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.

REFERENCES:
patent: 4534622 (1985-08-01), Harada
patent: 4836652 (1989-06-01), Oishi
patent: 5009483 (1991-04-01), Rockwell
patent: 5267062 (1993-11-01), Bottorf
patent: 5349453 (1994-09-01), Munakata

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