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Double-sided adhesive tape and display device having touch panel

A double-sided adhesive tape technology, applied in the direction of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problems of narrow frame width, difficult to use large display screen mobile phones, difficult adhesion and other problems , to achieve the effect of excellent adhesion and water resistance

Active Publication Date: 2012-05-09
LINTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it is assumed that the double-sided adhesive tapes they adopt are used in the form of a narrow frame below 2 mm in width, in the above-mentioned waterproof double-sided adhesive tape, it is difficult to obtain the foam structure due to the foam structure as described above. The width of the bezel is narrowed, making it difficult to apply to a mobile phone with a large display screen
In addition, even in the case of a narrow frame type, it is still necessary to fix the parts firmly, but since the base material is foam, there is a problem that the strength of the base material is low and the adhesiveness is difficult.

Method used

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  • Double-sided adhesive tape and display device having touch panel
  • Double-sided adhesive tape and display device having touch panel
  • Double-sided adhesive tape and display device having touch panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] A film of ethylene-methacrylic acid copolymer (manufactured by Mitsui Dupont Polymicul Co., Ltd., product name 'N0903HC', 91% by mass of olefinic monomer unit) was produced at a thickness of 100 μm, and corona treatment was performed on both sides to obtain a core material membrane. Next, on the release-treated surface of the light release sheet (manufactured by Lintec Co., Ltd., trade name 'SP-PET381031'), apply the adhesive agent forming coating with a doctor blade so that the thickness after drying is 50 μm. Liquid 1 was heat-dried at 100°C for about 2 minutes to perform thermal crosslinking. Then, the above-mentioned core material film was laminated on the adhesive layer to obtain a single-sided adhesive tape.

[0120] Then, on the release-treated surface of the heavy-release sheet (manufactured by Lintec Co., Ltd., trade name 'SP-PET3811'), a coating for forming an adhesive was applied using a doctor blade applicator so that the thickness after drying was 50 μm. ...

Embodiment 2

[0122] About Example 1, except having used the coating liquid 2 for adhesive agent formation instead of the coating liquid 1 for adhesive agent formation, it carried out similarly to Example 1, and produced the double-sided adhesive tape.

Embodiment 3

[0124] For Example 1, except that the core material film is a film that is corona-treated on both sides of a polyethylene film (manufactured by Tamapoli Corporation, product name 'A-1', thickness 100 μm), the same procedure as in Example 1 was followed. Way to make double-sided adhesive tape.

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Abstract

The present invention relates to a double-sided adhesive tape and a display device with a touch panel. The adhesive tape is suitable for component fixation in movable articles such as portable phone or touch panel, and waterproof states in portable information terminal with smaller frame edge width, wherein the double-sided adhesive tape has the following advantages: high adhesion adaptivity, high cementability and high water resistance. The double-sided adhesive tape is formed by laminated body. The laminated body is provided with a core material and adhesive layers which are equipped on two surfaces of the core material. The double-sided adhesive tape is characterized in that: (a) 5% tension stress of the core material is in a range of 3-100N, and stiffness (Gurley method) is less than 0.2mN; (b) the two adhesive layers respectively comprise (methyl)acrylate copolymer and resin which endows cementability, and are formed through performing heat cross-linking on the adhesive composition that comprises a cross-linking agent, whereinl, relative to 100 by weight parts of the (methyl)acrylate copolymer, the proportion of the resin that endows cementability is in a range of 1-60 by weight parts.

Description

technical field [0001] The present invention relates to a double-sided adhesive tape and a display device with a touch panel. More specifically, the present invention relates to a double-sided adhesive tape, which is a laminate, and a display device with a touch panel using the double-sided adhesive tape, in which , on both sides of the core material with specific properties, an adhesive layer with specific properties is provided. Poor fitting suitability, excellent adhesiveness and water resistance, and has unevenness adaptability when used for waterproofing and the like in a portable information terminal provided around a display screen with a narrow frame rim width. Background technique [0002] In portable information terminal devices such as mobile phones, PHS, and music players, double-sided adhesive tapes are used for fixing various parts of the information display unit, the casing, the periphery of the camera, and the key pad. In recent years, portable information ...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J133/04C09J133/08G06F3/041
CPCC09J9/00C09J2203/318C09J2423/046C09J2433/00C09J7/241C09J7/385G06F3/0412G06F3/0416
Inventor 那须健司本乡有记江嶋由多加
Owner LINTEC CORP
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