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Liquid crystal aligning agnet and liquid crystal display element

A liquid crystal aligning agent and polymer technology, applied in liquid crystal materials, chemical instruments and methods, optics, etc., can solve the problems of unstable electrical properties, uneven pretilt angle, display spots or poor display, etc., and achieve low surface free energy. , high durability, excellent operation and processing adaptability

Inactive Publication Date: 2008-08-20
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that in this cleaning process, the liquid crystal alignment film (especially the surface state) will be affected, resulting in uneven pretilt angle or unstable electrical performance, and when used as a liquid crystal display element, there will be display spots or poor display.

Method used

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  • Liquid crystal aligning agnet and liquid crystal display element
  • Liquid crystal aligning agnet and liquid crystal display element
  • Liquid crystal aligning agnet and liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0132] Monomer Synthesis Example 1 (Synthesis of 1-(3,5-diaminophenyl)-3-octadecylsuccinimide)

[0133] Add 12.81 g (0.07 mol) of 3,5-dinitroaniline and 70 ml of acetic acid to a 300 ml three-necked flask ventilated with nitrogen, and stir while feeding nitrogen to dissolve the solid matter. 24.64 g (0.07 mol) of octadecyl succinic anhydride was added thereto, and it was made to react under reflux for 20 hours under nitrogen. After cooling the reaction solution to room temperature, 70 ml of methanol was added and allowed to stand overnight. The precipitated solid was filtered off, washed with methanol, and dried to obtain 30 g (83% yield) of 1-(3,5-dinitrophenyl)-3-octadecylsuccinimide.

[0134] Then, in a 500ml flask ventilated by nitrogen, add 30g (0.058mol) of the above-synthesized 1-(3,5-dinitrophenyl)-3-octadecylsuccinimide, 100ml ethanol, 100ml Tetrahydrofuran (THF) and 25 g of the reduction catalyst palladium carbon (Pd / C) were stirred at 70° C. for 1 hour. 42.5 ml (...

Synthetic example 2

[0135] Monomer Synthesis Example 2 (Synthesis of 1-(3,5-diaminophenyl)-3-dodecylsuccinimide)

[0136]Except using 18.76g (0.07mol) dodecyl succinic anhydride instead of 24.64g (0.07mol) octadecyl succinic anhydride, operate in the same way as in Monomer Synthesis Example 1 to obtain 11g (0.030mol, yield 51% ) 1-(3,5-diaminophenyl)-3-dodecylsuccinimide.

Synthetic example 3

[0137] Monomer Synthesis Example 3 (Synthesis of 1-(3,5-diaminophenyl)-3-heptadecyl-4-methylmaleimide)

[0138] Add 31.5g (0.25mol) dimethyl maleic anhydride, 89.0g (0.5mol) N-bromosuccinimide, 1.0g (4.15mmol) diphenyl peroxide to a 2000ml three-necked flask ventilated by nitrogen formyl and 1500ml carbon tetrachloride, heated to reflux for 5 hours. The reaction solution was cooled to room temperature, left to stand overnight at room temperature, and then filtered. After the filtrate was washed with water, the organic layer was concentrated in a rotary evaporator. The resulting oily crude product was distilled under high vacuum (120-125° C. / 2 mmHg) to obtain 20.0 g (0.1 mol, yield 39%) of intermediate 3-bromomethyl-4-methylmaleic anhydride.

[0139] Then, add 16.4g (80mmol) above-mentioned 3-bromomethyl-4-methyl maleic anhydride, 1.52g (8.0mmol) copper iodide, 400ml ether and 160ml of HMPA (hexamethylphosphoric triamide), cooled to -5 ~ 0 ° C under the condition of feeding ...

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Abstract

The present invention relates to a liquid crystal alignment agent and a liquid crystal display element. The liquid crystal alignment agent contains (A) a polymer obtained through the reaction of tetracarboxylic acid dianhydride and at least one of diamine, and / or its imidized polymer, as well as (B) a compound having two or more epoxy group in a molecular, it can make a liquid crystal alignment film having good electrical property which is not easy to be affected by the detergent solvent and has an outstanding liquid crystal alignment. The liquid crystal display element is provided with the liquid crystal alignment film made from the aforementioned liquid crystal alignment agent.

Description

technical field [0001] The present invention relates to a liquid crystal aligning agent and a liquid crystal display element having a liquid crystal aligning film. More specifically, it is related with the liquid crystal display element which has the liquid crystal aligning agent which can make the liquid crystal aligning film excellent in heat resistance which has high vertical orientation, and the liquid crystal aligning film formed from this liquid crystal aligning agent. Background technique [0002] At present, 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, which is provided with a transparent conductive film such as ITO (indium oxide tin oxide) on the surface of the substrate. Form a liquid crystal alignment film made of polyamic acid, polyimide, etc., as a substrate for a liquid crystal display element, and set two of the substrates facing each ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337
CPCC09K19/56G02F1/1337
Inventor 熊谷勉福间聪司
Owner JSR CORPORATIOON
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