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Sealing agent for liquid crystal dropping methods, vertically conducting material, and liquid crystal display element

A technology of liquid crystal dropping and sealing agent, which can be used in instruments, optics, other chemical processes, etc., and can solve the problems of liquid crystal pollution of sealing agents.

Active Publication Date: 2015-10-14
SEKISUI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the use of such a sensitizer tends to cause contamination of the liquid crystal by the sealant

Method used

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  • Sealing agent for liquid crystal dropping methods, vertically conducting material, and liquid crystal display element
  • Sealing agent for liquid crystal dropping methods, vertically conducting material, and liquid crystal display element
  • Sealing agent for liquid crystal dropping methods, vertically conducting material, and liquid crystal display element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10、 comparative example 1～12

[0196] According to the compounding ratios described in Tables 1 and 2, each material was mixed using a planetary mixer (manufactured by Thinky Corporation, "あわとり先太郎"), and then mixed with a three-roll machine to prepare Examples 1 to 10, The sealing compound for liquid crystal dropping methods of Comparative Examples 1-12.

[0197] In addition, "the compound represented by the formula (3)" and "the compound represented by the formula (4)" mentioned in Table 1, 2 mean the compound represented by following formula (3) and (4), respectively.

[0198]

[0199]

[0200] The following evaluation was performed about each sealing compound for liquid crystal dropping methods obtained in Examples 1-10 and Comparative Examples 1-12. The results are shown in Tables 1 and 2.

[0201] (photocurable)

[0202] First, a substrate (A) in which chromium was vapor-deposited on the half surface of Corning glass with a thickness of 0.7 mm and a substrate (B) in which chromium was vapor-depo...

Embodiment 11～20、 comparative example 13、14

[0223] According to the compounding ratio described in Table 3, each material was mixed using a planetary mixer (manufactured by Thinky Co., Ltd., "あわとり先太郎"), and then mixed with a three-roll machine to prepare Examples 11 to 20 and Comparative Sealant for liquid crystal dropping method of Examples 13 and 14.

[0224] It should be noted that the "compound represented by formula (3)", "compound represented by formula (4)", "compound represented by formula (5)" and "compound represented by formula (6)" described in Table 3 The "compounds" refer to the compounds represented by the following formulas (3), (4), (5) and (6), respectively.

[0225]

[0226]

[0227]

[0228] The following evaluation was performed about each sealing compound for liquid crystal dropping methods obtained in Examples 11-20 and Comparative Examples 13 and 14. The results are shown in Table 3.

[0229] (photocurable)

[0230] Each liquid crystal dropping process sealant obtained in Examples 11 t...

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Abstract

The present invention provides a sealing agent for liquid crystal dropping methods, which has excellent photocurability and is capable of suppressing liquid crystal contamination. The present invention also provides a vertically conducting material and a liquid crystal display element, each of which is produced using the sealing agent for liquid crystal dropping methods. The present invention is a sealing agent for liquid crystal dropping methods, which contains a curable resin and a photopolymerization initiator, and wherein the photopolymerization initiator contains a compound represented by formula (1) and an oxime ester compound so that the weight ratio of the compound represented by formula (1) to the oxime ester compound is from 1:3 to 1:100. In formula (1), each of R1 and R2 represents a hydrogen atom or an -NR3 2 group, and R1 and / or R2 represents an -NR3 2 group; and each R3 represents a hydrogen atom or an alkyl group having 1-4 carbon atoms. In this connection, the R3 moieties may be the same as or different from each other.

Description

technical field [0001] This invention relates to the sealing compound for liquid crystal dropping methods which are excellent in photocurability and can suppress liquid crystal contamination. Moreover, this invention relates to the vertical conduction material and liquid crystal display element manufactured using this sealing compound for liquid crystal dropping methods. Background technique [0002] In recent years, from the viewpoint of shortening tact time and optimizing the amount of liquid crystal used, as a method of manufacturing liquid crystal display elements such as liquid crystal display units, the liquid crystal known as the dropping process disclosed in Patent Document 1 and Patent Document 2 is being used. The dropping method uses a photothermal curing type sealant containing a curable resin, a photopolymerization initiator, and a thermosetting agent. [0003] In the dropping process, first, a rectangular seal pattern is formed on one of two transparent substr...

Claims

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Application Information

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IPC IPC(8): G02F1/1339C08F2/50C09K3/10C08G59/68
CPCG02F1/1339C08F2/50C08G59/68G02F2001/13415G02F2202/023G02F1/1341G02F1/13415
Inventor 小林洋尾山雄一松田正则
Owner SEKISUI CHEM CO LTD
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