Title:
LIQUID CRYSTAL ALIGNING AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/158818
Kind Code:
A1
Abstract:
Provided is a liquid crystal aligning agent from which it is possible to obtain a liquid crystal alignment film that achieves both a rapid DC brightness relaxation speed and suppression of flicker changes. This liquid crystal aligning agent is characterized by containing a polymer (A), a polymer (B) and a polymer (C). Polymer (A) is at least one type of polymer selected from the group consisting of (i) to (iii). (i) A poly(amic acid) obtained by means of a polymerization reaction between a diamine component containing at least one type of diamine selected from the group consisting of a diamine represented by formula [1] and a diamine represented by formula [2] and a tetracarboxylic acid component comprising an aromatic tetracarboxylic acid dianhydride. (ii) A poly(amic acid) ester obtained by means of a polymerization reaction between a diamine component containing at least one type of diamine selected from the group consisting of a diamine represented by formula [1] and a diamine represented by formula [2] and a tetracarboxylic acid component. (iii) A polyimide obtained by imidation of a polyimide precursor obtained by means of a polymerization reaction between a diamine component containing at least one type of diamine selected from the group consisting of a diamine represented by formula [1] and a diamine represented by formula [2] and a tetracarboxylic acid component. Polymer (B) is at least one type of polymer selected from the group consisting of a polyimide precursor obtained by means of a polymerization reaction between a diamine component containing a diamine represented by formula [3] and a tetracarboxylic acid component, and a polyimide obtained from the polyimide precursor. Polymer (C) is a poly(amic acid) obtained by means of a polymerization reaction between a diamine component (however, the diamine component excludes a diamine represented by formula [3]) and a tetracarboxylic acid component comprising an alicyclic tetracarboxylic acid dianhydride and/or an aliphatic tetracarboxylic acid dianhydride.
(Formulae [1] to [3] are defined in the description.)
Inventors:
BEPPU KOICHIRO (JP)
NIITSU SHINPEI (JP)
NAKAI TAKASHI (JP)
MOCHIZUKI OKI (JP)
NIITSU SHINPEI (JP)
NAKAI TAKASHI (JP)
MOCHIZUKI OKI (JP)
Application Number:
PCT/JP2020/003238
Publication Date:
August 06, 2020
Filing Date:
January 29, 2020
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C08G73/10; C08L79/08
Domestic Patent References:
| WO2001000732A1 | 2001-01-04 | |||
| WO2018062440A1 | 2018-04-05 | |||
| WO2019065646A1 | 2019-04-04 |
Foreign References:
| JP2015135464A | 2015-07-27 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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