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Display material, liquid crystal alignment agent and liquid crystal display element

A liquid crystal alignment agent and display technology, applied in liquid crystal materials, instruments, chemical instruments and methods, etc., can solve problems such as uneven display and uneven ODF display, and achieve favorable product yield, excellent vertical alignment limit force, and high resistance. UV light effect

Active Publication Date: 2013-06-05
JSR CORPORATIOON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the ODF method is adopted in the manufacture of a conventionally known VA-type liquid crystal display element including a liquid crystal alignment film, there is an abnormal phenomenon that a display unevenness called "ODF unevenness" occurs

Method used

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  • Display material, liquid crystal alignment agent and liquid crystal display element
  • Display material, liquid crystal alignment agent and liquid crystal display element
  • Display material, liquid crystal alignment agent and liquid crystal display element

Examples

Experimental program
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example

[0574] Hereinafter, the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples.

[0575] In the following examples, the weight average molecular weight Mw is a polystyrene-equivalent value measured by gel permeation chromatography under the following conditions.

[0576] Column: manufactured by Tosoh Corporation, TSKgelGRCXLII

[0577] Solvent: tetrahydrofuran

[0578] Temperature: 40°C

[0579] Pressure: 68kgf / cm 2

[0580]

Synthetic example S-1-1

[0582] Into a 200 mL three-necked flask equipped with a thermometer, 33.0 g of AC-SQ TA100 (a hydrolysis condensate of 3-acryloxypropyltrimethoxysilane, manufactured by Toagosei Co., Ltd.), 9.2 g of thioglycolic acid (with respect to AC -SQ TA100 has a silicon atom corresponding to 50 mol%), 42.3 g of acetonitrile, and 20.2 g of triethylamine, and reacted at 50° C. for 1 hour. After completion of the reaction, 195 g of a solution containing about 20% by weight of polyorganosiloxane (S-1-1) was obtained by substituting the solvent in the system with butyl cellosolve (BC).

[0583] Mw of this polyorganosiloxane (S-1-1) was 5,200.

[0584] Synthesis Example S-1-2 and Synthesis Example S-1-3

[0585] In the above Synthesis Example S-1-1, the amount of thioglycolic acid used was set as described in Table 2, and octadecanethiol in the amount described in Table 2 was further added at the time of charging. Example S-1-1 was carried out in the same manner to obtain polyorganosiloxane...

Synthetic example E-1

[0593] 250g (equivalent to 50mol %) and 3-methacryloxypropyltrimethoxysilane (MTMS) 252g (equivalent to 50mol%), methyl isobutyl ketone 502g as a solvent and triethylamine 50g as a catalyst, at room temperature down to mix. Next, after dripping 402 g of deionized water over 30 minutes using the dropping funnel, it stirred at 80 degreeC and reflux, and performed reaction for 6 hours. After the reaction, the organic layer was taken out, washed with a 0.2% by weight aqueous solution of ammonium nitrate until the washed water became neutral, and then the solvent and water were distilled off under reduced pressure to obtain a viscous transparent liquid Polyorganosiloxane EPS-1 with epoxy structure.

[0594] The Mw of this polyorganosiloxane EPS-1 was 2,900.

[0595] Synthesis Example E-2 to Synthesis Example E-4

[0596] In the above Synthesis Example E-1, except that the type and amount of the silane compound were set as described in Table 3, polyorganosiloxane having an epoxy...

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Abstract

The invention provides a display material, a liquid crystal alignment agent, a liquid crystal display device and a manufacturing method thereof. The object of the present invention is to provide the liquid crystal alignment agent capable of acquiring excellent vertical orientation and possessing high UV resistance. The liquid crystal alignment agent includes at least polysiloxane and a solvent, and is characterized in that: the solvent includes a compound as shown in the following formula (S1): R10O-((CR112)m1-O)m2-H (S1), wherein R10 is phenyl or benzyl, the phenyl or the benzyl can also be substituted by halogen atoms, cyano groups, and C1-C4 alkyl, R11 is a hydrogen atom or a C1-C8 alkyl, m1 is an integer of 2-8, m2 is an integer of 1-4, a plurality of R11 may be identical or different from each other, and in case of a plurality of m1 s, the plurality of m1 may be identical or different from each other.

Description

technical field [0001] The invention relates to a display material, in particular to a liquid crystal alignment agent. More specifically, it is related with the liquid crystal aligning agent which can obtain the liquid crystal aligning film which is excellent in vertical alignment and has high ultraviolet resistance. Background technique [0002] As a liquid crystal display element, in addition to using the horizontal alignment of nematic liquid crystals with positive dielectric anisotropy represented by twisted nematic (TN) type and super twisted nematic (Super Twisted Nematic, STN) type, etc. In addition to the liquid crystal display element of the mode, there is also known a vertical alignment (Vertical Alignment, VA) type liquid crystal display element using a nematic liquid crystal having a negative dielectric anisotropy in a homeotropic alignment mode. [0003] This liquid crystal display element includes a liquid crystal alignment film that has the function of aligni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K19/56G02F1/1337G02F1/1333
CPCC08L83/04C09K19/56G02F1/133711G02F1/133788
Inventor 清水成夫平野哲川又俊友山边敦美石川晓
Owner JSR CORPORATIOON
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