Electro-optical display

Details Electro-optical display Electro-optical display

1974-04-15

1976-06-01

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

252408, 350150, 350160LC, G02F 116, C09K 334, G02F 113

Patent

active

039607500

ABSTRACT:
A nematic liquid crystal with positive dielectric anisotropy and a nematic liquid crystal with negative dielectric anisotropy are mixed such that the mixture is given a positive dielectric anisotropy and whenever any kind of pleochroic dye is dissolved therein, can effectively utilize its absorption anisotropy for display performances. A clear color-to-color contrast display is provided by employing the mixed liquid crystal added with pluralkinds of dyes of which at least one is a pleochroic dye and at least two are different in hue and in preformance characteristics of display device.

REFERENCES:
patent: 3597044 (1971-08-01), Castellano
patent: 3703329 (1972-11-01), Castellano
patent: 3781088 (1973-12-01), Tsukamoto et al.
patent: 3815972 (1974-06-01), Hsieh
patent: 3864022 (1975-02-01), Moriyama et al.
patent: 3900248 (1975-08-01), Nagasaki

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