Adhesive composition, adhesive film comprising same, backplate film comprising adhesive film, and plastic organic light-emitting display comprising adhesive film

A composition and adhesive technology, applied in the direction of adhesive types, organic semiconductor devices, ester copolymer adhesives, etc., can solve problems such as panel damage and increased adhesive strength

Active Publication Date: 2021-02-23
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, generally adhesive sheets have high adhesive strength after lamination to an adhesive substrate such as a substrate, and when the adhesive sheet is removed, the panel may be damaged damage, and in particular, even when stored for a long time without undergoing specific handling, there is a problem of increased bond strength

Method used

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  • Adhesive composition, adhesive film comprising same, backplate film comprising adhesive film, and plastic organic light-emitting display comprising adhesive film
  • Adhesive composition, adhesive film comprising same, backplate film comprising adhesive film, and plastic organic light-emitting display comprising adhesive film
  • Adhesive composition, adhesive film comprising same, backplate film comprising adhesive film, and plastic organic light-emitting display comprising adhesive film

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Embodiment approach

[0155] Hereinafter, the present disclosure will be described in detail with reference to the embodiments so that those skilled in the art can easily implement the present disclosure. However, the present disclosure can be implemented in various forms, and is not limited to the embodiments described herein.

preparation example 1

[0157] Polymerization of (meth)acrylate-based resin

[0158] After introducing ethylhexyl acrylate (EHA) / methyl methacrylate (MMA) / N-vinylpyrrolidone (VP) / hydroxyethyl acrylate (HEA) into acetic acid at a weight ratio of 65 / 20 / 5 / 10 After ethyl ester (EA), azobisisobutyronitrile (AIBN) (thermal polymerization initiator) was introduced thereinto to prepare a (meth)acrylate-based resin having a weight average molecular weight of 1,000,000 g / mol.

preparation example 2

[0159] Polymerization of Polymer

[0160] Polymers having the compositions and melting temperatures of Table 1 below were prepared.

[0161] [Table 1]

[0162] preparation 1 preparation 2 Composition (content) FM0721: STA (20:80) FM0721: HDA (20:80) Molecular weight (g / mol) 60,000 60,000 Melting temperature (Tm, ℃) 48 36

[0163] In Table 1, FM0721 is monofunctional polysiloxane and a product of Chisso Corporation is used, and FM0721 is (meth)acrylate in which polysiloxane exists.

[0164] The STA and HDA monomers used in Preparation 1 and Preparation 2 of Table 1 are monomers that have only Tm characteristics when polymerized, and do not exhibit Tg characteristics.

[0165] In Table 1, STA is stearyl acrylate, and HDA is hexadecyl acrylate.

[0166] -Manufacture of back sheet film

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Abstract

The present application relates to an adhesive composition, an adhesive film comprising same, a backplate film comprising the adhesive film, and a plastic organic light-emitting display comprising theadhesive film.

Description

technical field [0001] This application claims priority and benefit from Korean Patent Application No. 10-2018-0087779 filed with the Korean Intellectual Property Office on July 27, 2018, the entire contents of which are incorporated herein by reference. [0002] The present application relates to an adhesive composition, an adhesive film comprising the same, a backsheet film comprising the adhesive film, and a plastic organic light emitting display comprising the adhesive film. Background technique [0003] Adhesive sheets having high adhesive strength from the initial stage of adhesion are known in the art. Furthermore, when such an adhesive sheet is used to fix a substrate, an adhesive sheet having sufficient adhesive strength to fix the substrate is selected. [0004] At the same time, air bubbles or unexpected foreign matter generated during the process of bonding the adhesive sheet to the substrate may be introduced, which is not preferable in terms of appearance or a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/10C09J183/04C09J11/00C09J7/20C09J7/40
CPCC09J133/08C09J7/385C09J2203/318C09J2400/226C09J2301/312C08G77/14C08G77/20C09J183/06C09D133/066C09D133/08C08F230/08C08F220/1808Y02E10/549H10K59/8722H10K59/873C08L43/04C08F220/1818C08F220/14C08F226/06C08L83/06C08K5/0025C08K5/23C09J133/10C09J183/04C09J11/00C09J7/20C09J7/40B32B7/12B32B27/08B32B27/281B32B27/36B32B2457/206C09J183/10H10K77/111H10K2102/311C08L83/04C09J133/066C09J133/14C08L51/085
Inventor 朴柄洙权润京李熙济姜声旭韩相宪
Owner LG CHEM LTD
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