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Liquid crystal display assembly, manufacturing method thereof, and liquid crystal aligning agent

A liquid crystal aligning agent, liquid crystal display element technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve the problems of reduced transmittance, applied voltage to the liquid crystal layer, and reduced display quality of liquid crystal display components, and achieves uniform thickness. , the effect of excellent liquid crystal orientation

Inactive Publication Date: 2016-10-05
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a slit is provided, it is difficult to apply a sufficient voltage to the liquid crystal layer at the slit portion, and it is difficult to cause a change in the orientation of the liquid crystal molecules around the slit.
As a result, the transmittance at the time of voltage application may decrease in the slit portion of the electrode, thereby degrading the display quality of the liquid crystal display module.

Method used

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  • Liquid crystal display assembly, manufacturing method thereof, and liquid crystal aligning agent
  • Liquid crystal display assembly, manufacturing method thereof, and liquid crystal aligning agent
  • Liquid crystal display assembly, manufacturing method thereof, and liquid crystal aligning agent

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0143] The compounding ratio of these preferable organic solvents (the total amount of these when using 2 or more types) with respect to the total amount of the solvent used for preparation of a liquid crystal aligning agent is preferably set to 3 weight% or more, More preferably It is more preferable to set it as 5 weight% or more, and it is more preferable to set it as 10 weight% or more.

[0144] In addition, the organic solvent used preferably contains an organic solvent having a viscosity of 10 mP·s or more at 25° C. (hereinafter referred to as referred to as "specific solvents"). The specific solvent preferably has a viscosity at 25°C of 10 mP·s to 200 mP·s, more preferably 20 mP·s to 100 mP·s. Examples of such specific solvents include compounds having two or more hydroxyl groups. It is preferably an alkanediol having 2 to 10 carbon atoms, and specific examples thereof include ethylene glycol, propylene glycol, butanediol, pentanediol, hexanediol, and decanediol. In ...

Embodiment

[0212] Hereinafter, the present invention will be further specifically described using examples, but the present invention is not limited to these examples.

[0213] In the following examples and comparative examples, the imidation ratio of the polyimide in the polymer solution, the solution viscosity of the polymer solution, and the weight average molecular weight of the polymer were measured by the following methods. Hereinafter, the compound represented by formula X may be simply referred to as "compound X".

[0214] [Imidation rate of polyimide]

[0215] Put the polyimide solution into pure water, dry the resulting precipitate under reduced pressure at room temperature, dissolve it in deuterated dimethyl sulfoxide, and use tetramethylsilane as a reference substance, at room temperature determination 1 H-NMR ( 1 H-Nuclearmagnetic resonance, 1 H-NMR). according to income 1 From the H-NMR spectrum, the imidization rate [%] was determined by the following formula (1).

...

Synthetic example 1

[0228] 100 mole parts of 2,3,5-tricarboxycyclopentylacetic acid dianhydride as tetracarboxylic dianhydride, 10 mole parts of cholestanyloxy-2,4-diaminobenzene as diamine, the 20 molar parts of the compound represented by formula (E-1-2), 60 molar parts of 3,5-diaminobenzoic acid, and 10 molar parts of the compound represented by the formula (D-2-6) were dissolved in N- In methyl-2-pyrrolidone (NMP), reaction was performed at 60 degreeC for 6 hours, and the solution containing the polyamic acid of 20 weight% was obtained. The obtained polyamic-acid solution was fractionated a small amount, and NMP was added to make a solution having a polyamic-acid concentration of 10% by weight, and the solution viscosity measured was 80 mPa·s.

[0229] Then, NMP was added to the obtained polyamic acid solution to make a solution having a polyamic acid concentration of 7% by weight, and 1.3 times the moles of pyridine and acetidine were added to the total amount of tetracarboxylic dianhydride ...

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Abstract

The invention provides a liquid crystal display assembly, a manufacturing method thereof, and a liquid crystal aligning agent. The liquid crystal display assembly comprises a liquid crystal layer, a pair of substrates including a first substrate and a second substrate which are configured oppositely in such a way of clamping the liquid crystal layer, a pixel electrode disposed on the liquid crystal layer side of the first substrate, an opposite electrode disposed on the liquid crystal layer side of the second substrate opposite to the pixel electrode, and liquid crystal aligning layers disposed on the respective liquid crystal layers of the pixel electrode and the opposite electrode. In the liquid crystal display assembly, at least one of the pixel electrode and the opposite electrode is provided with a concave-convex structure at the surface of the liquid crystal layer. In addition, the liquid crystal aligning layer disposed on the electrode with the concave-convex structure is formed by a liquid crystal aligning agent having a polymer [P] with weight average molecular weight over 30000. The liquid crystal aligning layer of the liquid crystal display assembly has small thickness deviation and good liquid crystal aligning performance.

Description

technical field [0001] The present invention relates to a liquid crystal display component, a manufacturing method thereof, and a liquid crystal aligning agent, and in particular to a liquid crystal display component including an electrode having a concave-convex structure, a manufacturing method thereof, and a liquid crystal having an electrode having a concave-convex structure as a film forming object Alignment agent. Background technique [0002] Liquid crystal display elements are classified into several modes (types) according to the initial orientation state of liquid crystal molecules in the liquid crystal layer and the operation when a voltage is applied. For example, in addition to liquid crystal display elements known as Twisted Nematic (TN) type or Super Twisted Nematic (Super Twisted Nematic, STN) type, it is also known that the liquid crystal molecules of the liquid crystal layer when no voltage is applied A vertical alignment type liquid crystal display module...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1343G02F1/1337C09K19/54C09K19/56
CPCC09K19/542C09K19/56G02F1/133711G02F1/1343
Inventor 植阪裕介
Owner JSR CORPORATIOON
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