Optically addressed liquid crystal display device having a matri

Details Optically addressed liquid crystal display device having a matri Optically addressed liquid crystal display device having a matri

1994-05-31

1997-03-18

Sikes, William L.

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Optical excitation

349 29, G02F 1135

Patent

active

056127987

ABSTRACT:
A display mechanism is featured which incorporates a scanning laser which is used to address a two dimensional photocell matrix array. This array is coupled directly to a liquid crystal display (LCD) and is used to address pixels on the LCD thus creating a display as addressed by the laser. The image created is on the far side of the scanning laser and remains on the LCD until the charge from the photocells dissipate. A new display is created once again as the scanning laser addresses and illuminates desired photocells. Additional illumination is provided at the front of the display on the same side as the observer, or at the rear on the same side as the laser.

REFERENCES:
patent: 4277145 (1981-07-01), Hareng et al.
patent: 4842376 (1989-06-01), Braatz et al.
patent: 5073010 (1991-12-01), Johnson et al.
patent: 5177628 (1993-01-01), Moddel
patent: 5353080 (1994-10-01), Christman

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