Vertical liquid crystal orientating agent and vertical liquid crystal display element

A technology for liquid crystal display elements and liquid crystal orientation, which is applied to liquid crystal materials, static indicators, instruments, etc., and can solve the problems of reducing the number of liquid crystal display elements and the small size of the parent substrate.
CN1710467AActive Publication Date: 2005-12-21JSR CORPORATIOON
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JSR CORPORATIOON
Publication Date
2005-12-21

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Abstract

The present invention provides a vertical liquid crystal alignment agent which may stably give a liquid crystal alignment film having excellent coating property and no defects such as coating unevenness and the like. The vertical liquid crystal alignment agent comprises a mixed solvent consisting of a first organic solvent having a surface tension of 39 dyne / cm or more and containing nitrogen atom within molecules, a second organic solvent having a surface tension of 39 dyne / cm or more and containing no nitrogen atom within molecules, and a third organic solvent having a surface tension of 32 dyne / cm or less, and a partially imidated polymer of polyamic acid and / or a polyimide dissolved in the mixed solvent.
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Description

technical field

[0001] The invention relates to a vertical liquid crystal alignment agent and a vertical liquid crystal display element. More specifically, it relates to a vertical liquid crystal aligning agent capable of stably forming a vertical liquid crystal aligning film free from defects such as coating unevenness and pinholes for a liquid crystal display element made of a large substrate, and a vertical liquid crystal aligning film having a vertical liquid crystal aligning film made of the liquid crystal aligning agent. Liquid crystal display element of liquid crystal alignment film. Background technique

[0002] At present, as a liquid crystal display element, there is known a TN type liquid crystal display element having a so-called TN type (twisted nematic) liquid crystal cell, which is formed by forming polyamic acid, polyimide, etc. The liquid crystal alignment film is used as the substrate of the liquid crystal display element, and the two substrates are arrang...

Claims

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