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Liquid crystal aligning agent, liquid crystal aligning film, liquid crystal display element, compound and manufacture method of the compound

A liquid crystal aligning agent and compound technology, applied in chemical instruments and methods, liquid crystal materials, organic chemistry, etc., can solve the problems of increased residual DC voltage value and long driving time, and achieve excellent weather resistance and good liquid crystal alignment performance. and the effect of electrical properties

Active Publication Date: 2011-04-06
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the liquid crystal display element using this material has a small degree of deterioration in its electrical characteristics such as voltage retention, it has the disadvantage of increasing the residual DC voltage value when the driving time becomes longer.

Method used

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  • Liquid crystal aligning agent, liquid crystal aligning film, liquid crystal display element, compound and manufacture method of the compound
  • Liquid crystal aligning agent, liquid crystal aligning film, liquid crystal display element, compound and manufacture method of the compound
  • Liquid crystal aligning agent, liquid crystal aligning film, liquid crystal display element, compound and manufacture method of the compound

Examples

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Embodiment

[0195] Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not interpreted limitedly by the description of this Example.

[0196]

Synthetic example 1

[0198] With 98g (0.50 mole) 1,2,3,4-cyclobutanetetracarboxylic dianhydride and 110g (0.50 mole) pyromellitic dianhydride as tetracarboxylic dianhydride, and 200g (1.0 mole) as diamine mol) 4,4'-diaminodiphenylmethane, dissolved in a mixed solvent of 230g N-methyl-2-pyrrolidone and 2100g γ-butyrolactone, reacted for 3 hours at 40°C, and then added 1,350 g of γ-butyrolactone was used to obtain a solution containing 10 mass % of polyamic acid (PA-1). The solution viscosity of this solution is 125mpa.s.

Synthetic example 2

[0200] 200g (1.0 mole) of 1,2,3,4-cyclobutanetetracarboxylic dianhydride as tetracarboxylic dianhydride and 210g (1.0 mole) of diamine as 2,2'-dimethyl-4, 4'-Diaminobiphenyl, dissolved in a mixed solvent of 370g N-methyl-2-pyrrolidone and 3300g γ-butyrolactone, reacted for 3 hours at 40°C to obtain polyamic acid containing 10% by mass (PA-2) solution. The solution viscosity of this solution was 160 mPa·s.

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Abstract

The invention provides a liquid crystal aligning agent, a liquid crystal aligning film, a liquid crystal display element, a compound and a manufacture method of the compound. The liquid crystal aligning agent can form the liquid crystal aligning film capable of keeping good liquid crystal aligning performance and electric character and good weathering resistance even though after long time continuous driving and also preventing the residual DC voltage from increasing. The liquid crystal aligning agent contains (A) at least one polymer selected from a group consisting of a polyamic acid and a polymide and (B) a compound represented by the formula (1).

Description

technical field [0001] The present invention relates to a liquid crystal aligning agent, a liquid crystal aligning film, a liquid crystal display element, a compound and a manufacturing method of the compound. More specifically, the present invention relates to a liquid crystal alignment film which is excellent in liquid crystal orientation and has little deterioration in performance even when driven continuously for a long time, and which can perform high-quality display and eliminate afterimages even when driven for a long time A liquid crystal display element that is also short in time. Background technique [0002] Liquid crystal display elements are widely used in liquid crystal display devices such as mobile phones and liquid crystal televisions due to their advantages of low power consumption, easy miniaturization and flattening. As the display mode of such a liquid crystal display device, according to the change of the orientation state of the liquid crystal molecul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/56G02F1/1337C07D251/70C07D401/12C07D401/14
Inventor 内山克博秋池利之平井刚
Owner JSR CORPORATIOON