Title:
LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2022/220199
Kind Code:
A1
Abstract:
Provided are: a liquid crystal aligning agent which forms a liquid crystal alignment film that exhibits a high voltage retention ratio, suppresses the occurrence of after-images, and exhibits low liquid crystal pretilt angle characteristics; a liquid crystal alignment film obtained from said liquid crystal aligning agent; and a liquid crystal display element comprising said liquid crystal alignment film. The liquid crystal aligning agent is characterized by containing a polymer having at least one repeating unit selected from the group consisting of a repeating unit (p1) represented by formula (1) and an imidized structure unit of said repeating unit (p1). (In formula (1), X1 represents a tetravalent organic group. Y1 is a divalent organic group represented by "-Ar1-O-W-O-Ar2-". Ar1 and Ar2 each independently represent a divalent aromatic group of any one of a divalent benzene ring or a biphenyl structure, and any hydrogen atom of the aromatic group may be substituted with a monovalent group. W is a divalent organic group having 4 to 20 carbon atoms, which is represented by *-(CH2)m-L-A-*(L represents -O-C(=O)- or -C(=O)-O-, and A represents -(CH2)n-. m is an integer of 1-6. n is an integer of 1-16. When n is 2 or greater, any -CH2- constituting A may be substituted with -O-, -C(=O)-, -NH-, -O-C(=O)-, -C(=O)-O-, -C=C-, a phenylene group, or a cyclohexylene group. In addition, a portion of hydrogen atoms of W may be substituted with a halogen atom, a methyl group, a trifluoromethyl group, or a hydroxy group.)The symbol * represents a bond.) The symbol * represents a bond. R and Z each independently represent a hydrogen atom or a monovalent organic group.)
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Inventors:
MIZOGUCHI KOTARO (JP)
YUKI TATSUYA (JP)
SATO NATSUKI (JP)
YAMAMOTO YUSUKE (JP)
YUKI TATSUYA (JP)
SATO NATSUKI (JP)
YAMAMOTO YUSUKE (JP)
Application Number:
PCT/JP2022/017388
Publication Date:
October 20, 2022
Filing Date:
April 08, 2022
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C08G73/10
Domestic Patent References:
| WO2020175559A1 | 2020-09-03 |
Foreign References:
| US20090060979A1 | 2009-03-05 | |||
| JP2011257527A | 2011-12-22 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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