Visible light curing type frame seal adhesive composition

A composition and visible light technology, applied in the direction of adhesive additives, modified epoxy resin adhesives, non-polymer adhesive additives, etc., can solve the cost increase of photomask, non-clean light source of ultraviolet light source, liquid crystal destruction, etc. problem, to achieve the effect of saving mask cost, high initiation efficiency, and saving alignment process

Inactive Publication Date: 2017-02-22
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing UV-curable frame sealant has the following problems: 1. In order to avoid damage to the liquid crystal by ultraviolet light, when the frame sealant is irradiated with ultraviolet light, it is necessary to use a photomask (UV Mask) to block the liquid crystal ; 2. The UV light source is not a clean light source
In this way, in the process of UV curing, the cost of using the photomask increases, and in recent years, with the development of narrow borders, higher requirements are placed on the accuracy of the photomask.

Method used

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  • Visible light curing type frame seal adhesive composition
  • Visible light curing type frame seal adhesive composition
  • Visible light curing type frame seal adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A visible light-curable frame sealant composition, comprising the following components in parts by weight, 5 parts of epoxy acrylic resin, 5 parts of polymethyl methacrylate, 1 part of photoinitiator system, 1 part of 3,5-dimethacrylate Methylaniline, 5 parts of silicon dioxide powder, 0.2 part of p-hydroxyanisole, in the present embodiment photoinitiator is:

[0039]

Embodiment 2

[0041] A visible light curing type sealant composition, including the following components in parts by weight, 35 parts of epoxy acrylic resin, 35 parts of polymethyl methacrylate, 5 parts of photoinitiator system, 5 parts of 3,5-di Methylaniline, 20 parts of silicon dioxide powder, 3 parts of p-hydroxyanisole, the photoinitiating system in the present embodiment is:

[0042] combination, the molar ratio between the two is 1:1.

Embodiment 3

[0044] A visible light curing type sealant composition, including the following components in parts by weight, 20 parts of epoxy acrylic resin, 15 parts of polymethyl methacrylate, 3 parts of photoinitiator system, 2 parts of 3,5-di Methylaniline, 12 parts of silicon dioxide powder, 2 parts of p-hydroxyanisole, in the present embodiment photoinitiator is:

[0045] combination, the molar ratio between the two is 1:1.

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PUM

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Abstract

The invention provides a visible light curing type frame seal adhesive composition. The visible light curing type frame seal adhesive composition is prepared from an epoxy oligomer, a polyacrylate oligomer, a light initiator system, a heat curing agent, a filler and an additive; the visible light curing type frame seal composition adopts the visible light initiator system, the visible light initiator system comprises a component A, and the component A is a compound shown in formula 1; the visible light initiator system can generate free radical reaction under the action of visible light, an extinction coefficient is higher in the wave band of 500 to 600nm, and the higher initiation efficiency is guaranteed. The formula is shown in the description.

Description

technical field [0001] The invention belongs to the field of liquid crystal box sealing glue, and in particular relates to a visible light curing type sealing glue composition. Background technique [0002] The sealing glue of the liquid crystal cell plays the role of sealing the liquid crystal cell, and provides a certain thickness of the liquid crystal cell and the mechanical strength of the cell. The usual liquid crystal cell sealant is a mixture of epoxy resin oligomers, acrylic resin oligomers, photoinitiators, thermal initiators, filling materials, additives, etc. The conventional production process is on the Array substrate or CF substrate Coating the sealing glue on the upper part, basically bonding the upper and lower sides, and then irradiating the sealing glue with ultraviolet light (UV) to light-cure the sealing glue, and then further heat-curing the sealing glue under a certain high-temperature production process, Make the frame sealant have better adhesion per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/10C09J11/04C09J11/06
CPCC08K3/36C08K5/06C08K5/101C09J11/04C09J11/06C09J163/10
Inventor 李吉
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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