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Manufacturing method of substrate having liquid crystal alignment film for lateral electric field driven type liquid crystal display element

A group and alkyl technology, applied in the field of liquid crystal alignment films, can solve the problems of inability to uniformly rub the liquid crystal alignment films, inability to achieve liquid crystal alignment, and generation of static electricity, achieving excellent afterimage characteristics, high end linearity, and end The effect of small bulge

Active Publication Date: 2021-06-04
NISSAN CHEM IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the brushing method of rubbing the surface of a liquid crystal alignment film made of polyimide or the like has problems of generating dust and static electricity.
In addition, due to the high-definition of liquid crystal display elements in recent years, the unevenness caused by the electrodes on the corresponding substrate or the switching active elements for liquid crystal driving, it is impossible to rub the surface of the liquid crystal alignment film uniformly with a cloth, and it is impossible to achieve a uniform liquid crystal. orientation

Method used

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  • Manufacturing method of substrate having liquid crystal alignment film for lateral electric field driven type liquid crystal display element
  • Manufacturing method of substrate having liquid crystal alignment film for lateral electric field driven type liquid crystal display element
  • Manufacturing method of substrate having liquid crystal alignment film for lateral electric field driven type liquid crystal display element

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preparation example Construction

[0300] [Preparation of polymer composition]

[0301] The polymer composition used in the present invention is preferably prepared in the form of a coating liquid so as to be suitable for forming a liquid crystal aligning film. That is, the polymer composition used in the present invention is preferably prepared in the form of a solution in which a resin component for forming a resin coating is dissolved in an organic solvent. Here, the resin component refers to a resin component containing the above-mentioned photosensitive side chain type polymer capable of expressing liquid crystallinity. In this case, the content of the resin component is preferably 1% by mass to 20% by mass, more preferably 3% by mass to 15% by mass, particularly preferably 3% by mass to 10% by mass.

[0302] In the polymer composition of this embodiment, the above-mentioned resin components may all be the above-mentioned photosensitive side-chain polymers capable of exhibiting liquid crystallinity,...

Embodiment 1

[0424] NEP (49.0g) was added to the obtained methacrylate polymer powder (A) (6.0g), and it stirred and melt|dissolved at room temperature for 5 hours. A liquid crystal aligning agent (A1) was obtained by adding and stirring BCS (45.0 g) to this solution.

Embodiment 2

[0426] NMP (49.0g) was added to the obtained methacrylate polymer powder (A) (6.0g), and it stirred and melt|dissolved at room temperature for 5 hours. A liquid crystal aligning agent (A2) was obtained by adding and stirring PB (45.0 g) to this solution.

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Abstract

The present invention provides a transverse electric field-driven liquid crystal display element which is provided with high-efficiency orientation control capability, has excellent image sticking characteristics, and has a liquid crystal aligning film with high end linearity and small end bumps. The present invention solves the above-mentioned problems by a method of manufacturing a substrate having a liquid crystal alignment film in which a coating is formed by [1] coating a polymer composition on a substrate having a conductive film for driving a transverse electric field. film, the polymer composition comprising: (A) a photosensitive side chain type polymer exhibiting liquid crystallinity in a specific temperature range; and (B) an organic solvent having the properties of the aforementioned side chain type polymer Both a good solvent and a poor solvent, having 10% by mass or more of a good solvent having a boiling point of 180° C. or higher, the good solvent comprising a solvent selected from solvents having a boiling point of 100 to 230° C. and a surface tension of less than 41.0 dyn / cm, and / Or, the poor solvent contains propylene glycol monobutyl ether; [II] irradiating polarized ultraviolet rays to the obtained coating film; [III] heating the obtained coating film to obtain a liquid crystal for a transverse electric field driven liquid crystal display element endowed with orientation control ability Alignment film.

Description

technical field [0001] The present invention relates to a method for manufacturing a substrate having a liquid crystal alignment film for a transverse electric field drive type liquid crystal display element. In detail, it is related with the novel method for manufacturing the liquid crystal display element which is excellent in image sticking characteristics, and has a liquid crystal aligning film with high end part linearity and little edge part swelling. Background technique [0002] Liquid crystal display devices are known as display devices that are light in weight, thin in cross-section, and low in power consumption. In recent years, they have been used in large-scale television applications, etc., and have achieved remarkable development. The liquid crystal display element is constituted, for example, by sandwiching a liquid crystal layer between a pair of transparent substrates provided with electrodes. Also, in a liquid crystal display element, an organic film cont...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1337C08F20/30C08J5/18C08L33/00
CPCC08F20/30C08F220/303G02F1/133711G02F1/133788G02F1/133715G02F1/133726G02F1/133742
Inventor 片山雅章根木隆之川月喜弘近藤瑞穂
Owner NISSAN CHEM IND LTD