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Liquid orientation agent and liquid orientation film as well as liquid display element

A liquid crystal aligning agent and bonding technology, applied in the direction of liquid crystal materials, engine components, ship parts, etc., can solve the problems of insufficient peeling, reliability, and wear resistance of orientation quantitative force, and achieve high reliability and high liquid crystal. The effect of orientation and high wear resistance

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

As a result, the alignment film cannot be sufficiently peeled off even with commercially available water-based and organic-based liquid crystal alignment film strippers to recycle large substrates for cost reduction.
On the other hand, the alignment film that can be easily peeled off with a commercially available liquid crystal alignment film stripping liquid has the problems of reliability, alignment quantitative force, and wear resistance.

Method used

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  • Liquid orientation agent and liquid orientation film as well as liquid display element
  • Liquid orientation agent and liquid orientation film as well as liquid display element
  • Liquid orientation agent and liquid orientation film as well as liquid display element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0089] Hereinafter, the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples.

[0090] The peeling property of the liquid crystal aligning film in the Example of this specification and a comparative example was confirmed by visual observation, and whether there exists a film before and after immersing the coating film on a glass substrate in a peeling liquid, and obtained it. In addition, abrasion resistance was calculated|required by rubbing the coating film formed on the glass substrate 10 times, and confirming the presence or absence of a scratch. In addition, the orientation of the liquid crystal display element produced using an alignment film, and reliability test were evaluated by the following method.

[0091] (orientation test)

[0092] A liquid crystal cell was fabricated on a substrate coated with the alignment film, and the orientation was evaluated by checking whether or not flow alig...

Synthetic example 1

[0096] As tetracarboxylic dianhydride, 224.17g (0.5 moles) of 2,3,5-tricarboxycyclopentylacetic acid dianhydride, 157.14g (0.5 moles) of 1,3,3a,4,5,9b-hexahydro-5 -Methyl-5-(tetrahydro-2,5-dioxo-3-furyl)-naphtho[1,2-c]-furan-1,3-dione, as diamine compound 94.62g (0.875 mol) p-phenylenediamine, 32.02g (0.1 mol) 2,2'-ditrifluoromethyl-4,4'-diaminobiphenyl, 6.43g (0.01 mol) 3,6-bis(4- Aminobenzoyloxy)cholesterol, 4.04g (0.03mol) of 4-aminophenyl octadecyl ether were dissolved in 4,500g of N-methyl-2-pyrrolidone, and reacted at 60°C for 6 hours. Then, inject the reaction solution into a large amount of excess methanol to precipitate the reaction product. Then, by washing with methanol and drying at 40° C. for 15 hours under reduced pressure, 410 g of a polyamic acid having a logarithmic viscosity of 0.87 dl / g and an imidization ratio of 0% was obtained. 30 g of the obtained polyamic acid was dissolved in 570 g of N-methyl-2-pyrrolidone, 23.4 g of pyridine and 18.1 g of acetic an...

Synthetic example 2

[0098] As tetracarboxylic dianhydride, 224.17g (0.5 moles) of 2,3,5-tricarboxycyclopentylacetic acid dianhydride, 157.14g (0.5 moles) of 1,3,3a,4,5,9b-hexahydro-5 -Methyl-5-(tetrahydro-2,5-dioxo-3-furyl)-naphtho[1,2-c]-furan-1,3-dione, as diamine compound 94.62g (0.875 mole) p-phenylenediamine, 24.85 g (0.1 mole) bisaminopropyltetramethyldisiloxane, 6.43 g (0.01 mole) 3,6-bis(4-aminobenzoyloxy)cholesterol , 4.04g (0.03mol) of 4-aminophenyl octadecyl ether was dissolved in 4,500g of N-methyl-2-pyrrolidone, and reacted at 60°C for 6 hours. Then, inject the reaction solution into a large amount of excess methanol to precipitate the reaction product. Then, by washing with methanol and drying at 40° C. for 15 hours under reduced pressure, 370 g of a polyamic acid having a logarithmic viscosity of 0.82 dl / g and an imidization ratio of 0% was obtained. 30 g of the obtained polyamic acid was dissolved in 570 g of N-methyl-2-pyrrolidone, 23.4 g of pyridine and 18.1 g of acetic anhydr...

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PUM

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Abstract

The invention relates to a liquid crystal aligning agent and liquid crystal aligning film and liquid crystal display device. The liquid crystal aligning agent and liquid crystal aligning film are composed of a polymer having at least one of an imide bond unit and an amic acid bond unit formed by reaction of a tetracarboxylic acid dianhydride and a diamine or the mixture thereof. The liquid crystal aligning film formed by the liquid crystal aligning agent can provides liquid crystal display device with high reliability, wear resistance and liquid crystal orientation property.

Description

technical field [0001] The invention relates to a liquid crystal aligning agent, a liquid crystal aligning film and a liquid crystal display element. In more detail, it relates to a liquid crystal aligning agent capable of obtaining the following liquid crystal aligning film, and the liquid crystal aligning film and the above-mentioned liquid crystal display element using the same It has excellent properties, especially can be applied to large-sized substrates, and can be easily peeled off by any liquid crystal alignment film stripping liquid of the commercially available water system or organic system for the recovery of the substrate. Background technique [0002] In the past, people knew: a TN-type liquid crystal display element with a TN (Twisted Nematic) type liquid crystal cell. This TN-type liquid crystal display element is formed between two substrates that insert a transparent conductive film and form a liquid crystal alignment film on the surface. A cell having a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G02F1/1337C09K19/56
CPCB63B13/00B63B2221/02B63B2221/08F16K1/02F16K1/36F16K31/50
Inventor 德久博昭西川通则土屋元
Owner JSR CORPORATIOON
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