Method for manufacturing substrate having liquid crystal alignment film for in-plane-switching-type liquid crystal display element

A technology of liquid crystallinity and groups, which is applied in the field of manufacturing liquid crystal display elements with liquid crystal alignment films, which can solve problems such as dust generation, static electricity, and inability to rub liquid crystal alignment films evenly

Active Publication Date: 2016-06-08
NISSAN CHEM IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • Method for manufacturing substrate having liquid crystal alignment film for in-plane-switching-type liquid crystal display element
  • Method for manufacturing substrate having liquid crystal alignment film for in-plane-switching-type liquid crystal display element
  • Method for manufacturing substrate having liquid crystal alignment film for in-plane-switching-type liquid crystal display element

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preparation example Construction

[0229] [Preparation of polymer composition]

[0230] 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.

[0231] 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, and m...

Embodiment 1

[0320] 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. PB (20.0g) and DIBC (25.0g) were added and stirred to this solution, and the liquid crystal aligning agent (A1) was obtained.

Embodiment 2

[0322] 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. PB (10.0g) and DIBC (35.0g) were added and stirred to this solution, and the liquid crystal aligning agent (A2) was obtained.

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Abstract

The present invention provides a highly efficient in-plane-switching-type liquid crystal display element endowed with alignment controllability and having excellent ghosting characteristics. The present invention provides a method for manufacturing a substrate having a liquid crystal alignment film, the method having: [I] a step for applying, on a substrate having a conductive film for in-plane switching, a polymer composition containing (A) a photosensitive side-chain polymer exhibiting liquid crystal properties in a predetermined temperature range, (B) di-isobutyl carbinol, and (C) an organic solvent and forming a coating film; [II] a step for irradiating the coating film obtained in [I] with polarized ultraviolet rays; and [III] a step for heating the coating film obtained in [II]; whereby is obtained a liquid crystal alignment film for an in-plane-switching-type liquid crystal display element endowed with alignment controllability.

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 has a liquid crystal aligning film which is excellent in afterimage characteristics, linearity of an edge part is high, and swelling of an edge part is small. 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 organ...

Claims

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Application Information

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IPC IPC(8): C08L101/02C08F20/62C08K5/05G02F1/1337
CPCC08K5/05C09D4/00C09D133/06C08F220/1818G02F1/133788G02F1/134363
Inventor 片山雅章根木隆之川月喜弘近藤瑞穂
Owner NISSAN CHEM IND LTD
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