METHOD OF PRODUCING OPTICAL ALIGNMENT FILM, OPTICAL ALIGNMENT FILM AND PHASE DIFFERENCE FILM

Title:

METHOD OF PRODUCING OPTICAL ALIGNMENT FILM, OPTICAL ALIGNMENT FILM AND PHASE DIFFERENCE FILM

Document Type and Number:

Japanese Patent JP2015172751

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide: an optical alignment film based on a copolymerizable (meth)acrylic acid polymer soluble in a solvent having low toxicity and a low environmental impact; and a phase difference film obtained by orienting a liquid crystalline compound on the optical alignment film.SOLUTION: A film comprising a composition for an optical alignment film containing a copolymerizable (meth)acrylic acid polymer having a repeating unit represented by general formula (I-c) is irradiated with light having anisotropy and subjected to a heat treatment.

Inventors:

TSUBAKI KOKI
AWA SHIGEKI
KOBAYASHI TAKESHI
MATSUYAMA TAKETOMO
KAWATSUKI YOSHIHIRO

Application Number:

JP2015079033A

Publication Date:

October 01, 2015

Filing Date:

April 08, 2015

Export Citation:

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Assignee:

OSAKA ORGANIC CHEM IND
HYOGO PREFECTURE

International Classes:

G02B5/30; C08F220/30; G02F1/1337

Domestic Patent References:

JPH11160708A	1999-06-18
JPH11326638A	1999-11-26
JP2006098800A	2006-04-13
JP2007156439A	2007-06-21
JP2008276149A	2008-11-13
JP2006171043A	2006-06-29

Foreign References:

WO2009151095A1	2009-12-17
US20070191814A1	2007-08-16

Other References:

J. MAMIYA, A. YOSHITAKE, M. KONDO, Y. YU, T. IKEDA: "Is chemical crosslinking necessary for the photoinduced bending of polymer films?", JOURNAL OF MATTERIALS CHEMISTRY, vol. 18, no. 1, JPN7015000339, 1 November 2007 (2007-11-01), GB, pages 63 - 65, ISSN: 0003325480

Attorney, Agent or Firm:

Kawamura Taku
Yousuke Fujimori
Masahiro Mishima

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