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Liquid crystal sealing agent for liquid crystal dropping method and liquid crystal display cell using same

A technology of liquid crystal sealant and liquid crystal dripping, which is applied in the direction of instruments, optics, and other chemical processes, etc. It can solve the problems of liquid crystal sealant not being irradiated by light, liquid crystal seal deterioration, liquid crystal pollution, etc., and achieve excellent sealing linearity and long service life Long, strong adhesion effect

Active Publication Date: 2012-05-23
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the case of using a combination of photothermal curing type liquid crystal sealant, it is necessary to irradiate the liquid crystal sealant with light such as ultraviolet rays, but in recent years, with the narrowing of the frame of the liquid crystal cell, since the liquid crystal seal portion is blocked by wiring or black matrix, Therefore, a portion of the liquid crystal sealant that is not irradiated with light occurs, and there is a problem that the uncured portion is inserted into the liquid crystal during heat curing due to the liquid crystal seal being covered, or liquid crystal contamination occurs
[0012] Moreover, in response to the demand for longer life of liquid crystal cells, the deterioration of liquid crystal sealing under high humidity conditions has become a problem

Method used

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  • Liquid crystal sealing agent for liquid crystal dropping method and liquid crystal display cell using same
  • Liquid crystal sealing agent for liquid crystal dropping method and liquid crystal display cell using same
  • Liquid crystal sealing agent for liquid crystal dropping method and liquid crystal display cell using same

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Embodiment

[0073] The present invention will be described in more detail through examples below. However, the present invention is not limited to the following Examples.

Synthetic example 1

[0074] Synthesis example 1 (synthesis of fully acrylated product of resorcinol diglycidyl ether):

[0075] Resorcinol diglycidyl ether resin was dissolved in toluene, dibutylhydroxytoluene as a polymerization inhibitor was added thereto, and the temperature was raised to 60°C. Thereafter, acrylic acid having an equivalent of 100% of epoxy groups was added, and the temperature was further raised to 80° C., trimethylammonium chloride was added thereto as a reaction catalyst, and stirred at 98° C. for about 50 hours. The obtained reaction liquid was washed with water, toluene was distilled off, and epoxy acrylate of resorcinol was obtained.

Embodiment 1 and 2、 comparative example 1 to 3

[0077] The acrylated epoxy resin, epoxy resin, and silane coupling agent described in Table 1 were mixed to obtain a resin solution. Next, in Example 1, an inorganic filler, a polyfunctional hydrazide compound, a curing accelerator, a silicone rubber powder, and a polythiol compound were mixed to obtain a liquid crystal sealing agent. In Example 2, an inorganic filler, a polyfunctional hydrazide compound, a curing accelerator, and silicone rubber powder were mixed to obtain a liquid crystal sealing agent. In Comparative Example 1, an inorganic filler, a polyfunctional hydrazide compound, a curing accelerator, a silicone rubber powder, and a polythiol compound were mixed to obtain a liquid crystal sealing compound. In Comparative Example 2, an inorganic filler, a polyfunctional hydrazide compound, a silicone rubber powder, and a polythiol compound were mixed to obtain a liquid crystal sealing compound. In Comparative Example 3, an inorganic filler, a polyfunctional hydrazide c...

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Abstract

Disclosed is a thermosetting liquid crystal sealing agent for a liquid crystal dropping method, which contains, as essential components, (a) a curable resin that is composed of an epoxy resin and a (meth)acrylated epoxy resin, (b) a polyfunctional hydrazide compound, (c) a curing accelerator, (d) an inorganic filler and (e) a silicone rubber powder that has a true specific gravity of 0.95-1.0 and an average particle diameter of 10-18 [[mu] m]m. The thermosetting liquid crystal sealing agent for a liquid crystal dropping method contains the silicone rubber powder (e) in an amount of 5-40% by mass relative to the liquid crystal sealing agent.

Description

technical field [0001] The present invention relates to a liquid crystal sealing compound and a liquid crystal display unit using the sealing compound. More specifically, this invention relates to the liquid crystal sealing compound suitable for manufacturing a liquid crystal display unit by the liquid crystal dropping process, and the liquid crystal display unit manufactured using this sealing compound. Background technique [0002] As the size of liquid crystal display units increases, in recent years, as a method of manufacturing liquid crystal display units, the method of manufacturing liquid crystal display units by the conventional liquid crystal vacuum injection method is changing to the method of manufacturing liquid crystal display units with higher productivity. method (see Patent Document 1). Specifically, the so-called liquid crystal dropping process refers to a manufacturing method in which a liquid crystal sealant frame (main seal) is coated on a liquid crysta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1339C08G59/50C09K3/10
CPCC08G59/4035C08L2205/03C08L63/00C08L83/04C08G59/50C09K3/10G02F1/1339
Inventor 桥本昌典坂野常俊荷见直美曾根真规惠
Owner NIPPON KAYAKU CO LTD
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