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1. (WO2018008231) OPTICAL FILM AND METHOD FOR PRODUCING OPTICAL FILM

Pub. No.:    WO/2018/008231    International Application No.:    PCT/JP2017/015693
Publication Date: Fri Jan 12 00:59:59 CET 2018 International Filing Date: Thu Apr 20 01:59:59 CEST 2017
IPC: G02B 5/30
B32B 7/02
B42D 25/364
G03B 35/00
G03B 35/18
Applicants: JXTG NIPPON OIL & ENERGY CORPORATION
JXTGエネルギー株式会社
Inventors: KIYOHARA, Toshikazu
清原 稔和
HIROKI, Toshiyuki
廣木 寿之
SHIBAMIYA, Munetaka
柴宮 宗孝
NASU, Motonori
那須 元紀
Title: OPTICAL FILM AND METHOD FOR PRODUCING OPTICAL FILM
Abstract:
This method for producing an optical film 100 having a liquid crystal layer 30 comprises: an aligning step for imparting a film with liquid crystal aligning ability; a first liquid crystalline composition application step for applying a first liquid crystalline composition, which contains a first liquid crystal material having turning properties in a first direction, to a first region 34 on the film 20, which has been aligned; a second liquid crystalline composition application step for applying a second liquid crystalline composition, which contains a second liquid crystal material having turning properties in a second direction that is different from the first direction, to a second region 43 on the film 20, which has been aligned, said second region 43 not overlapping the first region 34; and a liquid crystal aligning step for forming the liquid crystal layer 30 by aligning the first liquid crystal material and the second liquid crystal material by heating and subsequently immobilizing the alignments. Consequently, an optical film 100, which has been provided with a design, is able to be easily produced without damaging a liquid crystal layer 30.