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Liquid crystal orientation agent, liquid crystal orientation film and forming method thereof, liquid crystal display component and polymer

A technology of liquid crystal aligning agent and liquid crystal aligning film, which is applied in the direction of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of decreased performance of pre-tilt angle and unstable pre-tilt angle of liquid crystal aligning film, etc., and achieve the effect of excellent stability

Inactive Publication Date: 2010-06-09
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the pretilt angle of the liquid crystal aligning film produced by the photo-alignment method in the past is unstable, that is to say, although the liquid crystal aligning film can show good pretilt angle performance when it is just formed, the pretilt angle performance will decrease as time goes by. falling problem

Method used

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  • Liquid crystal orientation agent, liquid crystal orientation film and forming method thereof, liquid crystal display component and polymer
  • Liquid crystal orientation agent, liquid crystal orientation film and forming method thereof, liquid crystal display component and polymer
  • Liquid crystal orientation agent, liquid crystal orientation film and forming method thereof, liquid crystal display component and polymer

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0212] Synthesis of polyamic acid

[0213] 0.01 mol (2.2 g) of 2,3,5-tricarboxycyclopentyl acetic dianhydride as another tetracarboxylic dianhydride as a diamine having both the photosensitive structure (A) and the specific group (B) 7.0g of 2-(oryzanolyloxy)ethyl (3,5-diaminobenzoate) synthesized by the method described in Patent Document 22 (Japanese Patent Application Laid-Open No. 2007-191447) by natural γ-oryzanol and 0.001 moles (0.23 g) of 1,4-diaminoanthraquinone as a diamine having a (C) sensitizing structure were dissolved in 85 g of N-methyl-2-pyrrolidone (NMP), and carried out at 60° C. It was made to react for 6 hours, and the solution containing 10 weight% of polyamic acid (A-1) was obtained. The solution viscosity of this solution was 50 mPa·s.

[0214] Synthesis of polyimide

[0215] 1.6 g of pyridine and 2.0 g of acetic anhydride were added to the solution containing 10% by weight of the polyamic acid (A-1), and a dehydration ring-closure reaction was p...

Synthetic example 8

[0220] Synthesis of other polyamic acids

[0221] 200 g (1.0 mol) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride as tetracarboxylic dianhydride, 2,2'-dimethyl-4,4'-diamino as diamine In 210 g (1.0 mol) of biphenyls and 3700 g of NMP, the solution containing about 10 weight% of polyamic acid (A-8) was obtained by performing reaction at 40 degreeC for 3 hours. The solution viscosity of this solution was 130 mPa·s.

[0222]

[0223] In addition, in Table 1, the abbreviation of tetracarboxylic dianhydride and diamine has the following meanings, respectively.

[0224]

[0225] TCA: 2,3,5-Tricarboxycyclopentylacetic dianhydride

[0226] TDA: 1,3,3a,4,5,9b-hexahydro-5-(tetrahydro-2,5-dioxo-3-furyl)-naphthalene[1,2-c]-furan-1, 3-diketone

[0227] CB: cyclobutane tetracarboxylic dianhydride

[0228]

[0229] ANT: 1,4-Diaminoanthraquinone

[0230] PDA: p-phenylenediamine

[0231] DDB: 2,2'-Dimethyl-4,4'-diaminobiphenyl

[0232] O-1: 2-(oryzanolyloxy)ethyl(3,5-diamino...

Embodiment 1

[0238] [Preparation of liquid crystal aligning agent]

[0239] Add NMP and butyl cellosolve to the solution containing polyimide (B-1) obtained in the above-mentioned synthesis example 1, form NMP with solvent: butyl cellosolve=60: 40 (weight ratio) dilute, make A liquid crystal aligning agent was prepared by filtering the solution with a concentration of 3.0% by weight through a filter having a pore diameter of 1 μm.

[0240] [Manufacture of liquid crystal display elements]

[0241] Using a spin coater, the liquid crystal aligning agent prepared above was coated on the transparent electrode surface of a glass substrate with an ITO film transparent electrode, and heated at 180° C. for 1 hour to form a coating film with a film thickness of 0.06 μm. By using Hg-Xe lamp and Glan-Taylor prism, the surface of the coating film is irradiated with polarized ultraviolet rays containing 313nm bright line for 50 seconds in a direction inclined 45° from the normal line of the substrate t...

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Abstract

The invention relates to a liquid crystal orientation agent, a liquid crystal orientation film and forming method thereof, a liquid crystal display component and polymer; provides a liquid crystal orientation agent capable of forming a liquid crystal orientation film which can generate a pre-inclination angel by light orientation method, while the generated pre-inclination angel has an excellent time stability; the liquid crystal orientation agent contains a polymer having (A) photosensitive structure containing conjugated double bonds, (B) at least one group selected from a group consisting of a fluoric alkyl with 1-3 carbon atoms, an alkyl with optional 4-20 carbon atoms substituted by fluorine atoms and mono-valent or di-valent hydrocarbyl having 9-30 atoms condensed alicyclic ring structure, and (C) light sensitivity enhancing structure.

Description

technical field [0001] The invention relates to a liquid crystal aligning agent, a liquid crystal aligning film and a forming method thereof, a liquid crystal display element and a polymer. More specifically, it relates to a liquid crystal aligning agent capable of forming a liquid crystal aligning film capable of forming a liquid crystal aligning film with excellent pretilt angle stability by irradiation with polarized or non-polarized light rays; exhibiting good liquid crystal orientation and excellent pretilt angle stability A liquid crystal alignment film and a method for forming the same; and a liquid crystal display element with excellent long-term reliability. Background technique [0002] So far, it is known that a nematic liquid crystal having positive dielectric anisotropy is sandwiched between substrates with transparent electrodes having a liquid crystal alignment film, and the long axes of liquid crystal molecules are continuously twisted between the substrates ...

Claims

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Application Information

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IPC IPC(8): C09K19/56G02F1/1337C08G73/10C08L79/08
CPCC09K19/56G02F1/133723G03F7/027G03F7/037
Inventor 中田正一秋池利之林英治西川通则
Owner JSR CORPORATIOON
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