Cinnamate-containing photopolymer for orientation film of liquid

Details Cinnamate-containing photopolymer for orientation film of liquid Cinnamate-containing photopolymer for orientation film of liquid

1997-10-16

1999-12-07

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

522121, 522153, 427520, 427553, 526321, 526242, 525304, C08F 2010, C08F 2022, G02F 11337

Patent

active

059981016

ABSTRACT:
The present invention provides novel photopolymers for use in liquid crystal display. The photopolymers are cinnamate-containing photopolymers wherein a mesogen, preferably containing a benzene ring, is introduced between a polyvinyl main chain and a cinnamate group, and also wherein the cinnamate group can be substituted with a cyanide group, an alkyl group, a halogen atom or a fluorocarbonyl group. The cinnamate-containing photopolymers have improved stability and photoelectric properties, and improved pre-tilt angle. The photopolymers can be used to form an orientation film for an LCD in a non-rubbing process, and can be used alone or with a cross linking agent.

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Dyaduysha, A. et al., "Peculiarity of an Oblique Liquid Crystal Alignment Induced by a Photosensitive Orientant", Jpn. J. Appl. Phys., 1995, 34(Part 2, No. 8A), L1000-L1002.
Schadt, M. et al., "Surface-Induced Parallel Alignment of Liquid Crystals by Linearly Polymerized Photopolymers", Jpn. J. Appl. Phys., 1992, 31(Part 1, No. 7), 2155-2164.

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