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Title:
LIQUID CRYSTAL ALIGNMENT AGENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL DISPLAY ELEMENT
Document Type and Number:
WIPO Patent Application WO/2018/124167
Kind Code:
A1
Abstract:
The present invention provides: a reliable liquid crystal alignment film that can be obtained even in a low-temperature firing process, has excellent rubbing resistance, and has a desired voltage retention rate; a liquid crystal alignment agent with which the liquid crystal alignment film is formed; and a liquid crystal display element provided with the liquid crystal alignment film. The present invention provides a liquid crystal alignment agent containing a component (A), a component (B), and a component (C), described below. Component (A): At least one polymer selected from a group comprising a polyimide precursor and a polyimide obtained by an imide reaction of the polyimide precursor. Component (B): The compound represented by formula (N-1) (in formula (N-1), R1 and R2 represent a C1-10 straight-chain or branched-chain alkylene group or the like, R3 and R4 represent a hydrogen atom or a C1-20 straight-chain or branched-chain alkyl group, and R5 represents a z-valent C1-24 aliphatic hydrocarbon group or the like, z being an integer from 1-6). Component (C): At least one specific solvent selected from the group comprising formulas (1)-(8) (in formulas (1)-(4) and (8), R11–R16 and R20–R21 each independently represent a C1-4 straight-chain or branched-chain alkyl group; in formulas (5) and (6), R17- R19 represent a C1 or C2 alkyl group; in formula (7), n represents an integer from 1-3).

Inventors:
KATAYAMA, Masaaki (LTD. Materials Research Laboratories 488-6, Suzumi-cho, Funabashi-sh, Chiba 52, 〒2740052, JP)
MIKI, Noritoshi (LTD. Materials Research Laboratories 488-6, Suzumi-cho, Funabashi-sh, Chiba 52, 〒2740052, JP)
GOTO, Kohei (LTD. Materials Research Laboratories 488-6, Suzumi-cho, Funabashi-sh, Chiba 52, 〒2740052, JP)
HOSAKA, Kazuyoshi (LTD. Materials Research Laboratories 488-6, Suzumi-cho, Funabashi-sh, Chiba 52, 〒2740052, JP)
Application Number:
JP2017/046854
Publication Date:
July 05, 2018
Filing Date:
December 27, 2017
Export Citation:
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Assignee:
NISSAN CHEMICAL INDUSTRIES, LTD. (7-1 Kanda Nishiki-cho 3-chome, Chiyoda-ku Tokyo, 54, 〒1010054, JP)
International Classes:
G02F1/1337; C08K5/04; C08L63/00; C08L79/08
Domestic Patent References:
WO2014133042A12014-09-04
Foreign References:
JP2014199446A2014-10-23
JP2009198739A2009-09-03
Attorney, Agent or Firm:
YOSHIZAWA, Takao et al. (Yurakucho Denki Building North Tower 8F, Section810 1-7-1 Yurakucho, Chiyoda-k, Tokyo 06, 〒1000006, JP)
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