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Sealant composition for display element with improved liquid crystal contamination problem and sealant formed by curing the same

A liquid crystal display element and sealant technology, which is applied in the direction of adhesive additives, modified epoxy resin adhesives, non-polymer adhesive additives, etc., can solve the problem of contaminating liquid crystals, producing streaks, aggravating streaks, afterimages, etc. problems, achieve the effect of improving thixotropy, maintaining strength and improving adhesive performance

Active Publication Date: 2015-09-30
SK MATERIALS PERFORMANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this liquid crystal dropping process, there will be contact between the liquid crystal and the uncured sealant after photocuring, and the components of the sealant will dissolve into the liquid crystal, causing the problem of contaminating the liquid crystal.
[0004] The cured resin composition used as liquid crystal sealant in the prior art has the problem of streaking and contamination of liquid crystal due to the elution of a large amount of uncured resin to the surface
In addition, the existing curable resin composition is irradiated with a short wave of 340nm in order to activate the photo initiator (photo initiator), and as a characteristic of short wave, many uncured shadows appear.
Since the shadow part is not cured and the glass transition temperature is too low, when the display panel is placed in a high-temperature and high-humidity environment for a long time, the problems of speckle and afterimage will be aggravated

Method used

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  • Sealant composition for display element with improved liquid crystal contamination problem and sealant formed by curing the same
  • Sealant composition for display element with improved liquid crystal contamination problem and sealant formed by curing the same
  • Sealant composition for display element with improved liquid crystal contamination problem and sealant formed by curing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The proportion includes 75g of (meth)acrylic epoxy resin of 2g of thermal curing agent, 3-(triethoxysilyl)propyl acrylate (3-(Triethoxysilyl)propyl acrylate) (A) 2g, photopolymerization initiator 1g of agent and 20g of inorganic filler were preliminarily mixed, then fully ground with a 3-roll mill, and vacuum defoamed with a rotation and revolution defoamer to obtain a resin composition.

Embodiment 2

[0039] The proportion includes 75g of (meth)acrylic epoxy resin of 2g of thermal curing agent, 3-(triethoxysilyl)propyl methacrylate (3-(Triethoxysilyl)propyl Methacrylate) (B) 2g, light 1 g of polymerization initiator and 20 g of inorganic filler were preliminarily mixed, then fully ground by a 3-roll mill, and vacuum defoamed by a rotation and revolution defoamer to obtain a resin composition.

Embodiment 3

[0041] The proportion includes 75g of (meth)acrylic epoxy resin of 2g of thermal curing agent, 3-(triethoxysilyl)propyl methacrylate (3-(Triethoxysilyl)propyl Methacrylate) (C) 2g, light 1 g of polymerization initiator and 20 g of inorganic filler were preliminarily mixed, then fully ground by a 3-roll mill, and vacuum defoamed by a rotation and revolution defoamer to obtain a resin composition.

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Abstract

PURPOSE: A sealant composition for liquid crystal display devices is provided to have excellent liquid crystal staining resistance and storage stability by using a silane coupling agent and a curable resin which can be quickly cured. CONSTITUTION: A sealant composition for liquid crystal display devices comprise 100.0 parts by weight of a partial methacrylate epoxy curable resin; 0.01-10 parts by weight of a silane coupling agent which includes at least one methacylate group and at least one alkoxy group in a molecule; and 2-3 parts by weight of a latent thermal curing agent. The partial methacrylate curable resin has a viscosity of 30000-200000 cps. A sealant for liquid crystal display devices is formed by curing the sealant composition and has an adhesion of 1.0-2.0 N / cm^2.

Description

technical field [0001] The present invention relates to the curing resin technology of encapsulants used for electronic components, etc., especially to a fast-curing resin composition for liquid crystal display devices used in the manufacture of liquid crystal display devices, and to a sealant composition with excellent storage stability And a sealant which is produced using the sealant composition, has less contamination to liquid crystals, and is excellent in adhesive strength. Background technique [0002] Liquid crystal display devices (LCDs) are widely used not only in small cell phones but also in large display panels. The liquid crystal display device includes two substrates and liquid crystal filled between the two substrates. In order to fill the liquid crystal between the two substrates, a sealant (SEALANT) composition is applied to the edge of one of the two substrates, and the two substrates are bonded together, and the sealant composition is cured . However, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J163/10C09J11/06G02F1/1339
CPCC08K5/54C08L63/00C09K3/10G02F1/1339
Inventor 金三珉曺圭元张用金泰均李润熙
Owner SK MATERIALS PERFORMANCE CO LTD
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