OPTICAL ALIGNMENT FILM FORMATION METHOD AND LAMINATE PREPARATION METHOD

WIPO Patent Application WO/2019/181168

A1

Provided are: an optical alignment film formation method for continuously forming an optical alignment film to more completely align liquid crystalline compounds; and a method for preparing a laminate in which liquid crystalline compounds are more completely aligned. An elongated photoisomerization film (68) containing a photoisomerization compound is transported in the longitudinal direction. A transport path for the photoisomerization film (68) is provided under a humidity controlled atmosphere having a humidity of 50-85%. Condensation is suppressed on the humidity controlled atmosphere-side surface of a cover glass (75) separating an LED serving as a light source (71) from a space that is the humidity controlled atmosphere. Light from the light source (71) is polarized by means of a reflection-type polarizer (77) disposed between the light source (71) and the transport path, and the photoisomerization film (68) that is passing through the humidity controlled atmosphere is continuously irradiated with the generated polarized light to form an optical alignment film (13).

KUSUMOTO MASAYUKI (JP)
KUNIYASU SATOSHI (JP)

PCT/JP2019/001731

September 26, 2019

January 21, 2019

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FUJIFILM CORP (JP)

G02F1/1337; G02B5/30

WO2011114663A1	2011-09-22
WO2016104375A1	2016-06-30

JPH01298315A	1989-12-01
JP2012065312A	2012-03-29

YUE SHI ET AL.: "Exotic Property of Azobenzenesulfonic Photoalignment MaterialBased on Relative Humidity", LANGMUIR, vol. 33, no. 16, 25 April 2017 (2017-04-25), pages 3968 - 3974, XP055640618, DOI: 10.1021/acs.langmuir.7b00417

KYORITSU INSTITUTE (JP)

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