Means for inducing perpendicular alignment of a nematic liquid c

Details Means for inducing perpendicular alignment of a nematic liquid c Means for inducing perpendicular alignment of a nematic liquid c

1975-04-21

1977-05-10

Esposito, Michael F.

Coating processes

Electrical product produced

Metallic compound coating

427 58, 427344, 428 1, 350160LC, 134 2, C09K 334, B05D 310

Patent

active

040229343

ABSTRACT:
A method for aligning nematic liquid crystals on a coated substrate is disclosed. The method involves a pretreatment of the coated substrate with a mixture of a long chain alcohol and an amine at elevated temperatures. Liquid crystals applied to substrates treated by this process undergo orientation such that their directors are aligned perpendicular to the surface of the coated substrates.

REFERENCES:
patent: 3687515 (1972-08-01), Haas et al.
patent: 3700306 (1972-10-01), Eastmell et al.
patent: 3809456 (1974-05-01), Goldmacher et al.
patent: 3843233 (1974-10-01), Haas et al.
patent: 3853391 (1974-12-01), Sorkin
patent: 3854793 (1974-12-01), Kah
Dixon et al., Aligment Mechanism . . . Layer, Appl. Phys. Letters, vol. 24, (No. 2), pp. 47-49, (1-1974).
Urbach et al., Alignment . . . Films, App. Phys. Let., vol. 25, (No. 9), pp. 179-181, (11-1974).

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