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1. (WO2018198425) HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL FILM AND METHOD FOR MANUFACTURING SAME

Pub. No.:    WO/2018/198425    International Application No.:    PCT/JP2017/045457
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Dec 20 00:59:59 CET 2017
IPC: G02B 5/30
B32B 27/00
B32B 27/30
C08F 220/30
C08J 7/04
G02F 1/13
G02F 1/13363
G09F 9/30
H01L 27/32
H01L 51/50
H05B 33/02
Applicants: NITTO DENKO CORPORATION
日東電工株式会社
Inventors: SUZUKI, Mitsuru
鈴木 暢
IIDA, Toshiyuki
飯田 敏行
Title: HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL FILM AND METHOD FOR MANUFACTURING SAME
Abstract:
Provided is a homeotropic alignment liquid crystal film produced in the following manner: a liquid crystalline composition containing a side chain type liquid crystal polymer and a photopolymerizable liquid crystal monomer is applied onto a film substrate with no vertical alignment film provided thereon; the liquid crystal polymer and the liquid crystal monomer are homeotropically aligned in a liquid crystal state; the liquid crystal monomer is polymerized or crosslinked by light irradiation to obtain a homeotropic alignment liquid crystal film. The side chain type liquid crystal polymer has a monomer unit containing a liquid crystalline fragment side chain, and a monomer unit containing a non-liquid crystalline fragment side chain. It is preferable that a stretched film is used as the film substrate, and that the heating temperature for aligning a liquid crystal compound is within a prescribed range.