Method for producing liquid crystal display element, liquid crystal display element, and polymer composition

A technology for liquid crystal display elements and manufacturing methods, applied in the directions of liquid crystal materials, chemical instruments and methods, coatings, etc., can solve problems such as hindering the use of resinous substrates, adverse effects on voltage retention, and producing display spots, etc., to reduce the amount of light, Displays excellent quality and fast response time

Active Publication Date: 2016-08-17
JSR CORPORATIOON
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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 / cm 2 Such a large amount of ultraviolet rays, therefore, in addition to the problem of decomposition of liquid crystal molecules, is known to cause the following problems: unreacted compounds that do not polymerize when irradiated with ultraviolet rays remain in the liquid crystal layer, or they combine to cause display unevenness and impair voltage retention. have adverse effects, or cause problems with the long-term reliability of the panel
Since this heating temperature occasionally exceeds the softening temperature of commonly used resins, it hinders the use of resin substrates in the PSA mode and its improved mode.

Method used

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  • Method for producing liquid crystal display element, liquid crystal display element, and polymer composition
  • Method for producing liquid crystal display element, liquid crystal display element, and polymer composition
  • Method for producing liquid crystal display element, liquid crystal display element, and polymer composition

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example A-1

[0261] In a 2000mL three-necked flask, 83.07g (0.50mol) of terephthalic acid as dibasic carboxylic acid, 54.07g (0.40mol) of p-phenylenediamine as diamine and (0.10mol) 3,5- Diaminobenzoic acid-3-cholestanyl ester is mixed with 310.0g (0.50mol) triphenyl phosphite, 42.4g (1.00mol) lithium chloride, 250ml pyridine and 500ml N-methyl-2-pyrrolidone , stirred at 100° C. for 3 hours to react. After the reaction, the reaction mixture was poured into a large amount of ethanol to precipitate again, and 90 g of the polymer (A-1) (polyamide) was recovered by filtration.

[0262] A small amount of the obtained polymer (A-1) was dissolved in N-methyl-2-pyrrolidone to form a solution having a polymer concentration of 10% by weight, and the measured solution viscosity was 60 mPa·s.

Synthetic example A-2

[0264] (1) Synthesis of vinyl monomers with pretilt angle display sites

[0265] According to the following synthetic scheme 1, compound (a-2) was synthesized.

[0266]

[0267] Synthetic route 1

[0268] In a 2000mL three-necked flask, 384.64g (1.00mol) of 7-dehydrocholesterol represented by formula (a-2-0), 338.56g (1.20mol) of trifluoromethanesulfonic anhydride and 202.2g (2.0mol) of trifluoromethanesulfonic anhydride Ethylamine was dissolved in 840 mL of dichloromethane, and reacted with stirring at -30° C. for 1 hour in a nitrogen atmosphere. Next, distilled water was added to the reaction mixture in small amounts each time, and after the reaction was stopped, 300 mL of ethyl acetate was added, followed by washing with dilute hydrochloric acid and distilled water. After dehydrating the organic layer over magnesium sulfate, the solvent was removed to obtain a solid.

[0269] In a 500mL three-necked flask, in a nitrogen atmosphere, the above solid, 0.112g (0.0005mol...

Synthetic example A-3

[0275] In a 300mL four-necked flask equipped with a stirring rod, a three-way valve and a thermometer, add 15g (0.033mol) cholestanyl methacrylate, 13g (0.090mol) glycidyl methacrylate, 7.2g ( 0.084mol) methacrylic acid, 7.2g (0.069mol) styrene and 7.2g (0.044mol) N-cyclohexylmaleimide, then add 53g as solvent ethanol, 2.2g as polymerization initiator 2,2 '-Azobis(2,4-dimethylvaleronitrile) and 0.96 g of α-methylstyrene dimer as a molecular weight regulator. This was boiled in a nitrogen stream for about 10 minutes, and the system was replaced with nitrogen, and reacted at 70° C. for 5 hours under a nitrogen atmosphere to obtain a solution containing 48% by weight of a polymer (A-3).

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Abstract

The invention relates to a manufacturing method for a liquid crystal display element, a liquid crystal display element and a polymer composition. The manufacturing method for a liquid crystal display element advantaged by wide visual angle, high response speed of liquid crystal molecules, and excellent display performance and long-term reliability is provided. The method is characterized by the following processes: on conductive films of a pair of substrates, a polymer composition is respectively applied to form a coating, the polymer composition comprises (A) at least a polymer selected from a group formed by Polyamide, polyving akohol derivative, and poly(metha)crylate, and (B) a polymer unsaturated compound; the pair of substrates forming the coatings, through the layer of the liquid crystal molecules, make the coatings be oppositely disposed to form a liquid crystal box; in the state that voltage is applied between the conductive films provided by the substrate, light is illuminated upon the liquid crystal box.

Description

technical field [0001] The present invention relates to a manufacturing method of a liquid crystal display element, a liquid crystal display element and a polymer composition. In more detail, it relates to a new method for manufacturing a liquid crystal display element having a wide viewing angle and a fast response speed. Background technique [0002] Among liquid crystal display elements, MVA (Multi-Domain Vertical Alignment) panels, known so far as a vertical alignment mode, control the inclination direction of liquid crystal molecules by forming protrusions in the liquid crystal panel, thereby widening the viewing angle. However, according to this method, it is unavoidable that the protrusions cause insufficient light transmittance and contrast, and further have a problem that the response speed of the liquid crystal molecules is slow. [0003] In recent years, a PSA (Polymer Sustained Alignment) method has been proposed in order to solve the above-mentioned problems of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333G02F1/1337C09D4/02C09D4/06
CPCC08G61/02C08G73/10C08L77/00C09K19/56G02F1/133723
Inventor 山边敦美清水成夫菅野尚基
Owner JSR CORPORATIOON
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