Texture transformations in optically negative liquid crystals

Details Texture transformations in optically negative liquid crystals Texture transformations in optically negative liquid crystals

Filed on

1974-09-16

Date issued

1976-06-01

Examiner

Stern, Ronald J.

Other Related Categories

G02F 116

Type

Patent

Status

active

Patent number

039604390

Description

ABSTRACT:
A system for transforming an optically negative liquid crystalline composition from the focal-conic texture state to the Grandjean texture state by means of an applied electrical field which may be a D.C. electrical field or a relatively low frequency A.C. electrical field. Imaging and display systems wherein a member comprising a film of an optically negative liquid crystalline composition is imaged in a desired image configuration by the electrical field induced texture transformation system are also described.

REFERENCES:
patent: 3642348 (1972-02-01), Wysocki et al.
patent: 3697150 (1972-10-01), Wysocki

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