Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2023/157876
Kind Code:
A1
Abstract:
Provided are: a liquid crystal alignment agent which can obtain a liquid crystal alignment film in which migration of silver is suppressed and which has a high voltage holding ratio even after being exposed for a long period of time under high temperature; the liquid crystal alignment film obtained from the liquid crystal alignment agent; and a liquid crystal display element using the same. Provided is the liquid crystal alignment agent containing component (A) below and the compound (B) represented by formula (1) below. Component (A) is a polymer (A) selected from the group consisting of: a polyimide precursor obtained by a polymerization reaction brought about between a diamine component and a tetracarboxylic acid derivative component including at least one compound selected from the group consisting a tetracarboxylic dianhydride and a derivative thereof; and a polyimide which is an imide compound of said polyimide precursor, the content of carboxy groups bonded to aromatic rings in the polymer being 5 parts by mass with respect to 100 parts by mass of the polymer. [Formula 1] (In the formula A1 represents a hydrogen atom or a univalent group having a trialkoxysilyl group, and A2 each independently represent a C1-4 alkyl group or alkoxy group, or a hydrogen atom.)
Inventors:
MORIYAMA SHOJI (JP)
YADA KENZO (JP)
KATAYAMA MASAAKI (KR)
YADA KENZO (JP)
KATAYAMA MASAAKI (KR)
Application Number:
PCT/JP2023/005220
Publication Date:
August 24, 2023
Filing Date:
February 15, 2023
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C08G73/10
Domestic Patent References:
| WO2018216769A1 | 2018-11-29 | |||
| WO2016194667A1 | 2016-12-08 |
Foreign References:
| JP2017054119A | 2017-03-16 | |||
| US20150307781A1 | 2015-10-29 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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