Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/162508
Kind Code:
A1
Abstract:
Provided is a liquid crystal alignment agent with which it is possible to obtain a liquid crystal alignment film that maintains the voltage holding ratio even after exposure to high temperatures and high humidity. The liquid crystal alignment agent is characterized by containing at least one polymer selected from the group consisting of: a polyimide precursor obtained by polymerizing either diamine component (1) or diamine component (2) below and a tetracarboxylic acid component; and a polyimide obtained by imidizing the polyimide precursor. Diamine component (1): a diamine component containing a diamine having a protective group that is substituted with a hydrogen atom by heat, and a diamine having a siloxane backbone. Diamine component (2): a diamine component containing a diamine having a siloxane backbone and a protective group that is substituted with a hydrogen atom by heat.
Inventors:
OTA SHOTARO (JP)
ASHIZAWA RYOICHI (JP)
ASHIZAWA RYOICHI (JP)
Application Number:
PCT/JP2020/004416
Publication Date:
August 13, 2020
Filing Date:
February 05, 2020
Export Citation:
Assignee:
NISSAN CHEMICAL CORP (JP)
International Classes:
G02F1/1337; C08G73/10
Domestic Patent References:
| WO2018135657A1 | 2018-07-26 | |||
| WO2018030489A1 | 2018-02-15 | |||
| WO2013115228A1 | 2013-08-08 |
Foreign References:
| JP2016048362A | 2016-04-07 |
Attorney, Agent or Firm:
T.S. PARTNERS et al. (JP)
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