Liquid crystal display element of optical writing type with ligh

Details Liquid crystal display element of optical writing type with ligh Liquid crystal display element of optical writing type with ligh

1992-05-22

1994-07-12

Gross, Anita P.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 72, G02F 1135, G02F 11335

Patent

active

053293908

ABSTRACT:
A liquid crystal display element of optical writing type is arranged to have a first transparent substrate, a first transparent electrode layer formed on the first substrate, a photoconductive layer formed on the electrode layer, a light absorbing layer formed on the photoconductive layer, a dielectric layer formed on the light absorbing layer, a second transparent substrate, a second transparent electrode layer formed on the second substrate, and a liquid crystal layer sealed between the second transparent electrode layer and the dielectric layer. The light absorbing layer is formed of a material having pigment dispersed in an organic material, so as to eliminate the necessity of patterning the light absorbing layer. The pigment may be a carbon black or an inorganic material in an acrylic resin, for example. The liquid crystal display element further includes a leveling layer formed on the light absorbing layer.

REFERENCES:
patent: 5056895 (1991-10-01), Kahn
patent: 5084777 (1992-01-01), Slobodin
patent: 5142391 (1992-08-01), Fujiwara et al.
patent: 5153759 (1992-10-01), Haas et al.
patent: 5233450 (1993-08-01), Hatano et al.
Latham et al, "A Silicon Liquid-Crystal Spatial Light Modulator", GEC Journal of Research (Incorporating Marconi Review), vol. 4, No. 3 (1986), pp. 219-222.

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