LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT

WIPO Patent Application WO/2020/116459

A1

Provided are: a liquid crystal alignment film that exhibits good resistance to AC image persistence or residual DC-derived image persistence, and has good adhesion to a sealing agent; and a liquid crystal alignment agent that can be used to obtain a liquid crystal display element which inhibits in-plane variations in brightness during black displaying, and has excellent contrast characteristics. This liquid crystal alignment agent is characterized by containing component (A) and component (B). Component (A): a polymer (A) having a repeating unit represented by formula (1). Component (B): a polymer (B) having a repeating unit represented by formula (3). (In formula (1), R1-R4 each represent a hydrogen atom, a halogen atom, an alkyl group having 1-6 carbon atoms, or the like, at least one of R1-R4 is a group as defined above but, excluding a hydrogen atom. Y1 represents a divalent organic group having a moiety structure represented by formula (H). In formula (3), X3 represents a tetravalent organic group derived from an aromatic acid dianhydride, Y3 represents a divalent organic group having a moiety structure represented by formula (m). R30 represents a hydrogen atom or an alkyl group having 1-4 carbon atoms. Z31 and Z32 each represent a hydrogen atom or the like.) (Q3 represents -(CH2)n- (n is 2-20), any -CH2- may be substituted by -O-. Note that oxygen atoms are not directly bonded together. Any hydrogen atom on the benzene ring may be substituted by a monovalent organic group. * represents a bond.)

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NAGI TATSUYA (JP)
FUKUDA IPPEI (JP)
ISHIKAWA KAZUNORI (KR)
NAKAHARA SHOICHIRO (KR)

PCT/JP2019/047261

June 11, 2020

December 03, 2019

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NISSAN CHEMICAL CORP (JP)

C08G73/10; G02F1/1337

WO2015072554A1	2015-05-21
WO2018062438A1	2018-04-05
WO2018159284A1	2018-09-07

T.S. PARTNERS et al. (JP)

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