Dyes for smectic cells

Details Dyes for smectic cells Dyes for smectic cells

1981-12-28

1984-08-14

Corbin, John K.

350351, 350349, G02F 113

Patent

active

044653387

ABSTRACT:
A class of dyes is disclosed for use in smectic display cells which has the common feature of a strong absorption band registering with the emission line of a helium neon laser at 633 nm. The dyes have the general formula ##STR1## where X is an alkyl group or substituted alkyl group, and Y is an alkyl group, a phenyl group, or a substituted phenyl group.

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Balanson, R. et al. "Sensitivity Improvement in Thermally Addressed Liquid Crystal Display by Incorporation of Dye," IBM Tech. Disc. Bull., vol. 21, No. 5 (Oct. 1978) p. 2007.
Tani, C. et al. "New Electrothermo-Optic Effect in Certain Smectic Liquid Crystal with a Pleochroic Dye Added," Applied Physics Lett., vol. 33, No. 4 (Aug. 15, 1978).

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