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

WIPO Patent Application WO/2023/074568

A1

Provided are: a liquid crystal alignment agent that enlarges the range of optical irradiation amounts at which it is possible to obtain a liquid crystal alignment film having low variation (non-uniformity) in the twist angle of liquid crystals within the surface of the liquid crystal alignment film, where the liquid crystal alignment agent forms a liquid crystal alignment film having a high water contact angle and is for obtaining a liquid crystal alignment film in which display unevenness caused by a cleaning step does not occur; a liquid crystal alignment film obtained from said liquid crystal alignment agent; and a high-performance liquid crystal display element comprising said liquid crystal alignment film.　Provided is a liquid crystal alignment agent characterized by containing at least one polymer (P) selected from the group consisting of: a polyimide precursor obtained by using a diamine component including the diamine (0) represented by formula (DA); and a polyimide which is an imidization product of the polyimide precursor. Also provided are a liquid crystal alignment film obtained from said liquid crystal alignment agent and a liquid crystal display element equipped with said liquid crystal alignment film. (The definition of each symbol is as described in the specification.)

GUNJI RIE (JP)
HARADA YOSHIKAZU (JP)
HIGANO TOSHIYUKI (JP)
ASHIZAWA RYOICHI (JP)

PCT/JP2022/039295

May 04, 2023

October 21, 2022

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NISSAN CHEMICAL CORP (JP)

G02F1/1337; C08G73/10

JPS5439033A	1979-03-24
JPH06128201A	1994-05-10
JP2016133675A	2016-07-25
JP2019132952A	2019-08-08
JP2001294663A	2001-10-23

T.S. PARTNERS et al. (JP)

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