Lyotropic nematic liquid crystals for use in electro-optical dis

Details Lyotropic nematic liquid crystals for use in electro-optical dis Lyotropic nematic liquid crystals for use in electro-optical dis

1976-06-22

1977-07-26

Padgett, Benjamin R.

Compositions

Liquid crystal compositions

252408, 350160LC, C09K 334, G02F 113

Patent

active

040381994

ABSTRACT:
A display device in which a thin layer of a lyotropic nematic mesomorphic composition is utilized to diffuse light from a source toward an observer by applying a suitable voltage, for example, 20 volts for a one mil layer. One form of the device transmits light through the layer. A second form of the device uses light diffused and reflected to the observer. A preferred lyotropic nematic mesomorphic composition includes three compounds of the structural formulae: ##STR1##

REFERENCES:
patent: 3675987 (1972-07-01), Rafuse
patent: 3690745 (1972-09-01), Jones et al.
patent: 3826757 (1974-07-01), Wong
patent: 3965030 (1976-06-01), Jones et al.
Dave, J. S. et al., J. Chem. Soc., part 4, pp. 4305-4309, (1955).
Dave, J. S. et al., Mol. Crys. Liq. Cryst., vol. 2, pp. 125-133, (1966).
Dave, J. S. et al., J. Chem. Soc(A) Inorg. Phys. Theor., pp. 1473-1478, (1967).
Kast, Landolt-Bornstein, vol. II, part 2, 6th Ed., Springer-Verlag, Berlin, pp. 266-267, 320, 326, (1960).

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