Liquid crystal device having a modified polyvinyl alcohol alignm

Details Liquid crystal device having a modified polyvinyl alcohol alignm Liquid crystal device having a modified polyvinyl alcohol alignm

1989-01-24

1989-11-28

Miller, Stanley D.

350341, 350350S, G02F 113

Patent

active

048833444

ABSTRACT:
A liquid crystal device comprises a pair of parallel substrates and a ferroelectric liquid crystal disposed between the substrates so as to have an arrangement of molecules forming a plurality of layers perpendicular to the faces of the substrates. At least one of the pair of substrates has an alignment control film formed of a modified polyvinyl alcohol resin having a function of aligning said plurality of layers preferentially in one direction. The modified polyvinyl alcohol resin film stably provides a uniform alignment state with a large tilt angle than a conventional alignment control film of polyimide or unmodified polyvinyl alcohol.

REFERENCES:
patent: 4261650 (1981-04-01), Sprokel
patent: 4278326 (1981-07-01), Kawamura et al.
patent: 4291948 (1981-09-01), Crossland et al.
patent: 4514043 (1985-04-01), Ahne et al.
patent: 4561726 (1985-12-01), Goodby et al.
patent: 4662721 (1987-05-01), Harada et al.
patent: 4820026 (1989-04-01), Okada et al.

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