Title:
LIQUID CRYSTAL DISPLAY ELEMENT, LIQUID CRYSTAL ALIGNMENT FILM, AND LIQUID CRYSTAL ALIGNMENT TREATMENT AGENT
Document Type and Number:
WIPO Patent Application WO/2014/157235
Kind Code:
A1
Abstract:
Provided is a liquid crystal display element having high vertical alignment in a liquid crystal, excellent transparency when no voltage is applied and scattering characteristics when a voltage is applied, and strong adhesion between a liquid crystal layer and a vertical liquid crystal alignment film. The liquid crystal display element is obtained by placing a liquid crystal layer between a pair of substrates provided with an electrode, disposing a liquid crystal composition containing a polymerizable compound polymerized by active energy rays and/or heat between the pair of substrates, providing at least one of the substrates with a liquid crystal alignment film such that the liquid crystal is aligned vertically, curing the liquid crystal composition while all or part of the liquid crystal composition exhibits liquid crystal properties, and forming a cured product composite of the liquid crystal and the polymerizable compound, wherein the liquid crystal display element is characterized in that the liquid crystal alignment film is obtained from a liquid crystal alignment treatment agent containing at least one type of polymer selected from the group consisting of polyimides and polyimide precursors represented by formula [1-1] or [1-2], and also containing a solvent having a boiling point of less than 180ºC, the solvent being contained in an amount constituting at least 50 mass% of the complete solvent. In formula [1-1], Y1, Y2, and Y3 are single bonds, etc.; Y4 and Y5 are benzene rings, etc.; Y6 is a C1-18 alkyl group, etc.; and n is an integer from 0 to 4. In formula [1-2], Y7 is a single bond, etc.; and Y8 is a C8-22 alkyl group.
Inventors:
MIKI NORITOSHI (JP)
GOTO KOHEI (JP)
KATAYAMA MASAAKI (JP)
TOMOE KOJI (JP)
KIKUCHI NAHO (JP)
HOSAKA KAZUYOSHI (JP)
GOTO KOHEI (JP)
KATAYAMA MASAAKI (JP)
TOMOE KOJI (JP)
KIKUCHI NAHO (JP)
HOSAKA KAZUYOSHI (JP)
Application Number:
PCT/JP2014/058337
Publication Date:
October 02, 2014
Filing Date:
March 25, 2014
Export Citation:
Assignee:
NISSAN CHEMICAL IND LTD (JP)
International Classes:
G02F1/1337; C08G73/10; G02F1/1334
Domestic Patent References:
| WO2013035803A1 | 2013-03-14 |
Foreign References:
| JP2007249041A | 2007-09-27 | |||
| JP2003255315A | 2003-09-10 | |||
| JP2008058374A | 2008-03-13 |
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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