Smectic liquid crystal cell with heat pulse and laser

Details Smectic liquid crystal cell with heat pulse and laser Smectic liquid crystal cell with heat pulse and laser

1981-12-28

1984-10-16

Corbin, John K.

G02F 1133, G02F 1137

Patent

active

044771517

ABSTRACT:
A method of operating a homeotropically aligned smectic liquid crystal cell in which the cell is turned from a clear to a scattering state by illumination with an intense flash of light after which a focused laser beam is scanned across the layer to leave clear tracks where homeotropic alignment has been restored thereby producing a display providing, in projection, bright lines on a dark background.

REFERENCES:
patent: 3114836 (1963-12-01), Fergason et al.
patent: 4040047 (1977-08-01), Hareng et al.
Tani et al., "New Electrothermo-Optic Effect in a Certain Smectic Liquid Crystal with a Pleochroic Dye", Appl. Phys. Lett., 33, (4), Aug. 15, 1978, American Institute of Physics, pp. 275-277.

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