Liquid crystal aligning agent, liquid crystal alignment film, phase difference film, method for forming phase difference film, liquid crystal display device, and polymer

A technology of liquid crystal alignment agent and phase difference film, which is applied in the direction of liquid crystal materials, polarizing elements, chemical instruments and methods, etc., can solve problems such as liquid crystal layer peeling, and achieve the effect of improving quality

Active Publication Date: 2014-01-15
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case of using the existing liquid crystal alignment agent, the adhesion force between the liquid crystal alignment film and the liquid crystal layer formed thereon may not be sufficient. During the process, etc., there may be cases where the above-mentioned liquid crystal layer is peeled off

Method used

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  • Liquid crystal aligning agent, liquid crystal alignment film, phase difference film, method for forming phase difference film, liquid crystal display device, and polymer
  • Liquid crystal aligning agent, liquid crystal alignment film, phase difference film, method for forming phase difference film, liquid crystal display device, and polymer
  • Liquid crystal aligning agent, liquid crystal alignment film, phase difference film, method for forming phase difference film, liquid crystal display device, and polymer

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0179]

[0180] The liquid crystal alignment agent is prepared as a solution-like composition in which each component is preferably dissolved in an organic solvent by mixing component [A] as an essential component and other components if necessary in a predetermined ratio. Furthermore, the above-mentioned solution-form composition can also be prepared by filtering with a filter having a pore diameter of about 1 μm after mixing the components.

[0181] The organic solvent is preferably an organic solvent that does not react with [A] component and other components that may be contained. Examples of organic solvents include alcohol-based solvents, ether-based solvents, ketone-based solvents, amide-based solvents, ester-based solvents, and hydrocarbon-based solvents. These organic solvents can be used individually or in combination of 2 or more types.

[0182] As alcoholic solvents such as

[0183] Monoalcohol solvents include methanol, ethanol, n-propanol, isopropanol, n-buta...

Embodiment

[0242] Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples. The measurement method of the physical property value is as follows.

[0243] [Weight average molecular weight (Mw) and number average molecular weight (Mn)]

[0244] Mw and Mn of the polymer can be measured under the following conditions by gel permeation chromatography (GPC).

[0245] String: TSKgelGRCXLII manufactured by Tosoh Corporation

[0246] Solvent: THF

[0247] Temperature: 40°C

[0248] Pressure: 68kgf / cm 2

[0249] Standard material: monodisperse polystyrene

[0250] [epoxy equivalent]

[0251] Measured based on JIS C2105 "hydrochloric acid-methyl ethyl ketone method".

[0252] [ 1 H-NMR analysis]

[0253]1 H-NMR analysis uses a nuclear magnetic resonance device (JNM-ECX400P, manufactured by JEOL Ltd.), the measurement frequency is 400MHz, and the measurement solvent is chloroform-d 3 or DMSO-d 6 under the conditi...

Synthetic example 1

[0257] [Synthesis Example 1] (Synthesis of Cinnamic Acid Derivative (C-1))

[0258] In a 500mL three-necked flask with a condenser, add 20g of 4-bromodiphenyl ether, 0.18g of palladium acetate, 0.98g of tris(2-tolyl)phosphine, 32.4g of triethylamine and 135mL of dimethylacetamide mix. Next, 7 g of acrylic acid was added and stirred to this mixed solution with a syringe, and heating and stirring were performed at 120° C. for 3 hours. After confirming the completion of the reaction by thin layer chromatography (TLC), the reaction solution was cooled to room temperature. Next, after separating the precipitate by filtration, the filtrate was poured into 300 mL of 1N hydrochloric acid aqueous solution to recover the precipitate. These precipitates were recrystallized with a 1:1 (mass ratio) solution of ethyl acetate and hexane to obtain 8.4 g of a cinnamic acid derivative (C-1) represented by the following formula.

[0259] [chemical 17]

[0260]

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Abstract

The present invention aims to provide a liquid crystal aligning agent which can form excellent liquid crystal aligning performance and is excellently sealed with a liquid crystal layer, a liquid crystal alignment film formed by the liquid crystal aligning agent, phase difference film including the liquid crystal alignment film and manufacturing method thereof, a liquid crystal display device including the liquid crystal alignment film, and a polymer serving as a suitable ingredient of the liquid crystal aligning agent. The liquid crystal aligning agent provided by the invention contains A, i.e., an ingredient where the same or different molecule thereof contains optical aligning radicals and radicals containing polymerism double bonds. The ingredient A is optionally a polymer ingredient. The optical aligning radicals are optionally radicals containing a cinnamic acid structure. The liquid crystal alignment film is formed by the liquid crystal aligning agent. The phase difference film contains the liquid crystal alignment film. The phase difference film is optionally used in the liquid crystal display device. The liquid crystal display device contains the phase difference film.

Description

technical field [0001] The invention relates to a liquid crystal alignment agent, a liquid crystal alignment film, a retardation film, a manufacturing method of the retardation film, a liquid crystal display element and a polymer. Background technique [0002] Liquid crystal displays (liquid crystal displays, LCDs) are widely used in televisions or various displays. The display elements of LCD are known as super twisted nematic (Super Twisted Nematic, STN) type, twisted nematic (Twisted Nematic, TN) type, coplanar switching (In Plane Switching, IPS) type, vertically aligned (Vertically Aligned, VA) type, Polymer sustained alignment (PSA) type, etc. (refer to Japanese Patent Laid-Open No. 56-91277 and Japanese Patent Laid-Open No. 1-120528). Various optical materials are used in the liquid crystal display element. For example, the retardation film of the above-mentioned liquid crystal display element can be used for the following purposes: the purpose of eliminating the colo...

Claims

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Application Information

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IPC IPC(8): C09K19/56G02F1/1337G02F1/13363G02B5/30C08G77/38C08F220/32C08F8/00
CPCC08L33/04C08L83/04C09K19/56G02F1/13363G02F1/1337G02F1/133711
Inventor 宫本佳和王道海阿部翼村主拓弥
Owner JSR CORPORATIOON
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