Display device

Details Display device Display device

1980-03-07

1983-12-06

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340763, 340788, 52171, 350355, 350359, 350363, 35016211, G09G 334

Patent

active

044196636

ABSTRACT:
A display device comprises a composite body including a display structure of film-shape or plate-shape porous substance made of light transmissive or colored dielectric material and supported to expose at least one surface thereof to an open space and light transmissive liquid material impregnated in the porous substance, and means for applying a signal voltage to the composite body. By electroosmotic movement of the light transmissive liquid material in the porous substance in response to the signal voltage, liquid impregnation factor on at least one surface of the porous substance exposed to the open space is electrically controlled to control light reflection factor or light transmission factor of the composite body to an external light.
By forming a plurality of depressions of dot or line shape on the surface of the porous substance exposed to the open space, a high sensitivity control of external light is attained. By applying color ink on the surface of the porous substance or a surface of a support plate for supporting the porous substance, a color display device is attained.

REFERENCES:
patent: 1744642 (1930-01-01), Kondo
patent: 3476460 (1969-11-01), Hansen et al.
patent: 4199228 (1980-04-01), Destannes
patent: 4269480 (1981-05-01), Krueger

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