Liquid crystal alignment agent and liquid crystal display unit

A liquid crystal alignment agent and solvent technology, which is applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve problems such as lack of electrical properties of liquid crystal alignment film, difficulty in ensuring the uniformity of liquid crystal alignment agent printing, etc.
CN101339334AActive Publication Date: 2009-01-07JSR CORPORATIOON
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JSR CORPORATIOON
Publication Date
2009-01-07

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Abstract

The present invention relates to an aligning agent for liquid crystal containing at least a polymer and solvent selected from polyamic acid and polyimide gained by dewatering closed-loop, the solvent contains: (A) a first solvent containing compound with formula (I); (B) a second solvent selected from at least one of N-methyl-2-pyrrolidone, gamma-butyrolactone, 1,3-dimethyl-2-imidazolone, N, N-dimethylformamide and N, N- dimethylacetylamide; and (C) a third solvent selected from at least one of butyl cellosolve, diacetone alcohol, carbonic sub-propyl ester, diethylene glycol diethyl aether and ethyl-3- oxethyl propionic ether. (In formula (I) the R respectively represents alkyl with 3 to 10 carbon atoms).
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Description

technical field

[0001] The present invention relates to a liquid crystal aligning agent and a liquid crystal display element. More specifically, it relates to a liquid crystal aligning agent which is good in coatability by an inkjet coating method and can be used to provide a liquid crystal aligning film having excellent properties such as liquid crystal aligning ability, and a liquid crystal display element excellent in display characteristics and reliability. . Background technique

[0002] Currently, as a liquid crystal display element, a TN type liquid crystal display element having a so-called TN (twisted nematic, Twisted Nematic) type liquid crystal cell is known. A liquid crystal alignment film including polyamic acid, polyimide, etc. is formed on the substrate surface of a transparent conductive film such as indium-tin oxide), and it is used as a substrate for a liquid crystal display element. A nematic liquid crystal layer with positive dielectric anisotropy is fo...

Claims

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