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Adhesive agent composition, adhesive sheet, and electronic device

A composition and adhesive technology, applied in the direction of adhesives, adhesive types, conjugated diene adhesives, etc., can solve the problems of reduced moisture resistance, insufficient moisture resistance, and inappropriateness, and achieve excellent moisture resistance , Balanced excellent effect

Active Publication Date: 2015-07-29
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, organic EL elements have a problem that light-emitting characteristics such as light-emitting luminance, light-emitting efficiency, and light-emitting uniformity tend to decrease over time.
[0009] However, a sealing material formed using an acrylic adhesive or the like is not suitable for a sealing material that requires extremely high moisture resistance, such as a sealing material for an organic EL element, due to insufficient moisture resistance.
[0010] Furthermore, when the sealing material formed by using an acrylic adhesive or the like has a cross-linked structure, there is a concern that the sealing material will be easily peeled off from the adherend due to impact, vibration, heat, etc., and the moisture resistance will be greatly reduced.

Method used

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  • Adhesive agent composition, adhesive sheet, and electronic device
  • Adhesive agent composition, adhesive sheet, and electronic device
  • Adhesive agent composition, adhesive sheet, and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0223] (Preparation of adhesive composition)

[0224] 100 parts of isobutylene-based polymer (A1), 20 parts of diene-based rubber (B1), and 2.0 parts of crosslinking agent (C1) were dissolved in toluene to prepare an adhesive composition (1) with a solid content concentration of 20% .

[0225] (Manufacture of adhesive sheet 1)

[0226] The adhesive composition (1) was applied to the base sheet (1) so that the thickness after drying would be 20 μm, and the resulting coating film was dried at 110° C. for 1 minute to form an adhesive layer. Next, the release sheet (1) was bonded to the adhesive layer with its release-treated surface to obtain an adhesive sheet (1A).

[0227] (Manufacture of adhesive sheet 2)

[0228] The adhesive composition (1) was applied to the release-treated surface of the release sheet (2) so that the thickness after drying would be 60 μm, and the resulting coating film was dried at 110° C. for 1 minute to form an adhesive layer. Next, the release sheet (1) was bo...

Embodiment 2～10、 comparative example 1

[0236] Except for changing the components and their blending amounts to those described in Table 1, adhesive compositions (2) to (12) were obtained in the same manner as in Example 1, and these adhesive compositions were used to obtain bonding Sheets (2A) to (12A), adhesive sheets (2B) to (12B), and organic EL elements (2) to (12).

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Abstract

The present invention provides: an adhesive agent composition obtained by mixing an isobutylene-based polymer (A), a diene-based rubber (B) having a hydroxyl group, and a cross-linking agent (C); an adhesive sheet provided with an adhesive-agent layer formed using the adhesive agent composition; and an electronic device provided with a sealant formed using the adhesive agent composition or the adhesive sheet. According to the present invention, provided are: an adhesive agent composition useful as a formation material for an adhesive-agent layer exhibiting excellent moisture barrier properties and an excellent balance between adhesive strength and holding power; an adhesive sheet provided with the adhesive-agent layer formed using the adhesive agent composition; and an electronic device provided with a sealant formed using the adhesive agent composition.

Description

Technical field [0001] The present invention relates to an adhesive composition useful as a material for forming an adhesive layer having excellent moisture resistance and excellent balance of adhesion and retention, and an adhesive having an adhesive layer formed using the adhesive composition A sheet, and an electronic device having a sealing material formed using the adhesive composition or the adhesive sheet. Background technique [0002] In recent years, organic EL elements have attracted attention as light-emitting elements capable of high-intensity light emission using low-voltage direct current driving. [0003] However, the organic EL element has the following problem: With the passage of time, the luminous characteristics such as luminous brightness, luminous efficiency, and luminous uniformity tend to decrease. [0004] As a cause of the problem of the decrease in light emission characteristics, it is considered that oxygen, moisture, etc. penetrate into the inside of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/22C09J7/00C09J7/02C09J11/06C09J11/08C09J109/00H01L21/56H01L51/50H05B33/04
CPCH01L2924/0002H01L51/5246C09J2423/00H05B33/04C09J2203/326C09J7/0214C09J2409/00C09J123/22C08L23/22C09J7/383C08L9/00C08K5/01H10K50/8426H01L2924/00C08L7/00C09J109/00
Inventor 西岛健太永绳智史渊惠美
Owner LINTEC CORP