Ferroelectric liquid crystal devices having reverse twist angle

Details Ferroelectric liquid crystal devices having reverse twist angle Ferroelectric liquid crystal devices having reverse twist angle

1986-07-15

1988-10-18

Miller, Stanley D.

350341, G02F 113

Patent

active

047782595

ABSTRACT:
A liquid crystal device includes a pair of substrates each having a uniaxial orientation as provided by rubbing or oblique vapor deposition, and a ferroelectric liquid crystal disposed between the substrates. The uniaxial orientation axes respectively provided to the pair of substrates intersect each other at an intersection angle .theta.. The ferroelectric liquid crystal molecules may have such an alignment tendency that their axes are twisted along a normal to the substrates in the absence of an electric field when they are disposed between two substrates having the same direction of uniaxial orientation axes. The liquid crystal device may be subjected to an AC application pretreatment. The uniaxial orientation axes respectively provided to the base plates may have mutually different orientation controlling powers.

REFERENCES:
patent: 4563059 (1986-01-01), Clark et al.
patent: 4586791 (1986-05-01), Isogai et al.
patent: 4709994 (1987-12-01), Kanbe

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