Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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, low substrate strength, difficult adhesion, etc. Excellent adhesion and water resistance

Active Publication Date: 2015-06-17
LINTEC CORP
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

PROBLEM TO BE SOLVED: To provide a double-sided self-adhesive tape excellent in pasting suitability to a stepped part, adhesivity and water resistance, suitable for fixing members in a mobile product such as a cellular phone and a touch panel, and usable for waterproofing, etc., in handheld terminals with narrow frames. SOLUTION: This double-sided self-adhesive tape comprises a laminate including a core material and self-adhesive layers provided on both surfaces thereof, where (a) the core material has 5% tensile stress of 3-100 N and bending stiffness (Gurley method) of 0.2 mN or less; (b) the two self-adhesive layers are obtained each by thermally crosslinking a self-adhesive composition comprising a (meth)acrylic ester copolymer and a tackifier of 1-60 pts.mass to 100 pts.mass of the copolymer and a crosslinking agent.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com