Liquid crystal alignment film, liquid crystal display element and manufacturing method of the same

A technology of liquid crystal alignment and maleamic acid group, which is applied in the direction of liquid crystal materials, chemical instruments and methods, instruments, etc., can solve the problems of unreacted compounds remaining in the liquid crystal layer, failure to reach a practical level, liquid crystal molecule decomposition, etc., to achieve Long-term reliable effect

Active Publication Date: 2017-07-25
CHI MEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in order to polymerize the aforementioned polymerizable compound, it is necessary to irradiate, for example, 100,000 J / m 2 Such a large amount of ultraviolet rays, therefore, in addition to the problem of decomposition of liquid crystal molecules, there is also a problem that unreacted compounds that cannot be polymerized even when irradiated with ultraviolet rays remain in the liquid crystal layer.
Residual unreacted compounds combine with each other in the liquid crystal layer, resulting in poor long-term reliability of the panel, which cannot be used to a practical level

Method used

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  • Liquid crystal alignment film, liquid crystal display element and manufacturing method of the same
  • Liquid crystal alignment film, liquid crystal display element and manufacturing method of the same
  • Liquid crystal alignment film, liquid crystal display element and manufacturing method of the same

Examples

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preparation example Construction

[0057] In formula (2), R a Indicates -CH 2 -, -O-, -NH-, -N(CH 3 )-, -CONH-, -NHCO-, -CH 2 O-, -COO-, -OCO-, -CON(CH 3 )-or-N(CH 3 ) CO-. R a Can be formed by general organic synthesis methods, but from the viewpoint of ease of synthesis, -CH 2 -, -O-, -NH-, -NHCO-, -CH 2 O- or -COO- is preferred. R b Represents an unsubstituted or fluorine atom-substituted linear alkylene group with a carbon number of 1 to 20, and any -CH in the alkylene group 2 -Available by-CF 2 -, -CH=CH- or the following substituents are substituted, and the substituents include: -O-, -COO-, -NHCO-, -NH-, carbocyclyl or heterocyclyl, wherein, when two -CH above 2 - When substituted by the substituent, the substituent is not adjacent. Preferably, R b Represents a linear alkylene group with a carbon number of 1 to 20, more preferably, R b Represents a linear alkylene group having 2 to 8 carbon atoms.

[0058] The carbocyclyl may include the following structures, but is not limited thereto. ...

Synthetic example

[0188] Synthesis Example A-1 to Synthesis Example A-12 of the compound (A) having a maleamic acid group are described below:

Synthetic example A-1

[0190] A nitrogen inlet, a stirrer, a heater, a condenser tube, and a thermometer were arranged on a four-necked flask with a capacity of 500 milliliters, and nitrogen was introduced. Then, in a four-necked flask, add 3.95 grams (0.015 moles) of diamine compound Da1 (abbreviated as a2-1-1), 2.82 grams (0.0075 moles) of 1-octadecyloxy-2,4-di Aminobenzene (abbreviated as a2-2-1) and 50 grams of tetrahydrofuran (hereinafter referred to as THF), and stirred at room temperature until dissolved. Then, 2.81 grams (0.025 moles) of 2-methylmaleic anhydride (abbreviated as a1-1) was added, and reacted at room temperature for 3 hours. After the reaction, the reaction solution was filtered, and the filtered solid was repeatedly washed with THF After washing and filtering three times, placing in a vacuum oven and drying at a temperature of 60° C., the compound (A-1) having a maleamic acid group can be obtained.

[0191] Synthesis Example A-2 to Synthesis Example A-12 and Comparative Synth...

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Abstract

A liquid crystal alignment film, a liquid crystal display element and manufacturing method of the same are provided. The liquid crystal alignment film includes a crosslinking structure represented by Formula (1): Formula (1) wherein T represents a structure of aliphatic group, alicyclic group or aryl group; Q represents an organic group including a photo-reacting group; and k represents an integer of 1 or more.

Description

technical field [0001] The present invention relates to a liquid crystal alignment film, a liquid crystal display component and a manufacturing method thereof, in particular to a liquid crystal alignment film capable of forming a liquid crystal display component with less residue of a polymerizable compound and good long-term reliability, and a liquid crystal having the above-mentioned liquid crystal alignment film A display component, and a method for manufacturing the liquid crystal display component. Background technique [0002] With the development of liquid crystal displays towards large-size display specifications, in order to overcome the viewing angle problem under large-size displays, the wide viewing angle technology of liquid crystal display panels must also continuously improve and break through. A multi-domain vertical alignment (MVA) liquid crystal display panel is a common wide viewing angle technology. In the multi-domain vertical alignment type liquid crys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/56C08F122/40C08F22/40G02F1/1337
CPCC08F22/40C08F122/40C09K19/542C09K19/56G02F1/133723
Inventor 蔡宗沛黄菀婷邱信融
Owner CHI MEI CORP
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