Liquid crystal display element

Details Liquid crystal display element Liquid crystal display element

1997-08-27

1999-09-28

Wu, Shean C.

Compositions

Liquid crystal compositions

Containing pleochroic dye

25229901, 349 74, 349 79, 349 86, 349165, C09K 1900, C09K 1960, G02F 11347

Patent

active

059582910

ABSTRACT:
This liquid crystal display element is featured in that it comprises, a substrate provided on one main surface thereof with an electrode, a 3-ply GH liquid crystal layer superimposed on the substrate, each GH liquid crystal layer being different in absorption wavelength from each other and containing a host liquid crystal and a guest dichroic dye, and three transparent electrode layers, each formed on each of the GH liquid crystal layer, wherein at least one layer out of the 3-ply GH liquid crystal layer contains a fluorine-based liquid crystal and an anthraquinone-based magenta or cyan dichroic dye having at least two arylthio groups.

REFERENCES:
patent: 4689171 (1987-08-01), Blunck et al.
patent: 5790215 (1998-08-01), Sugahara et al.

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