Ferroelectric liquid crystal device with modified polyvinyl alco

Details Ferroelectric liquid crystal device with modified polyvinyl alco Ferroelectric liquid crystal device with modified polyvinyl alco

1987-03-17

1989-04-11

Miller, Stanley D.

350350S, G02F 113

Patent

active

048200263

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 larger tilt angle than a conventional alignment control film of polyimide or unmodified polyvinyl alcohol.

REFERENCES:
patent: 4561725 (1985-12-01), Hotta
patent: 4561726 (1985-12-01), Goodby
patent: 4586791 (1986-05-01), Isogai
patent: 4664480 (1987-05-01), Geary et al.

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