Method of orienting a liquid crystal material, apparatus therefo

Details Method of orienting a liquid crystal material, apparatus therefo Method of orienting a liquid crystal material, apparatus therefo

1990-05-31

1992-05-05

Lusignan, Michael

Coating processes

Optical element produced

156229, 156324, 428 1, 359 76, 359 54, B05D 506

Patent

active

051106230

ABSTRACT:
A uniform orientation can be brought about to the liquid crystal material enclosed in a liquid crystal device by applying a shearing force to the liquid crystal material while an electric field is being applied to the liquid crystal material, without requiring disposition of orientation layers nor accurate control of temperature. The orientation method can be efficiently conducted by an apparatus comprising a supply roll for supplying and conveying the liquid crystal device, a roller having conductive orientation rolls for bending the conveyed liquid crystal device and for applying an electric field to the liquid crystal material, a power source for applying a voltage to the conductive orientation roll, and a receiving means for receiving the liquid crystal device which has gone through the bending.

REFERENCES:
patent: 4904065 (1990-02-01), Yuasa et al.
patent: 4973373 (1990-11-01), Hasamoto et al.

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