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Protective adhesive film, screen panel and mobile electronic terminal

A technology of adhesive film and adhesive layer, applied in the direction of electronic equipment, adhesive, adhesive type, etc., can solve the problems of foaming, surface hardness reduction, insufficient surface hardness of adhesive sheet, etc., to achieve suitable bonding force, the effect of alleviating the sag of the film, and realizing the adhesive force

Active Publication Date: 2012-09-19
DAINIPPON INK & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface hardness of this adhesive sheet is insufficient, and further improvement is required in order to apply it to an image display device.
In addition, since the protective adhesive sheet is used as the outermost layer of the image display device, it is required to have excellent peeling resistance. However, if a soft adhesive is used to ensure the adhesive force, the surface hardness will decrease, and it will be damaged in a high-temperature and high-humidity environment. conditions that cause foaming

Method used

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  • Protective adhesive film, screen panel and mobile electronic terminal
  • Protective adhesive film, screen panel and mobile electronic terminal
  • Protective adhesive film, screen panel and mobile electronic terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0164] Hereinafter, the present invention will be described more specifically by way of examples and comparative examples, but the present invention is not limited to these examples.

Synthetic example 1

[0166]

[0167] Add 250 mass parts glycidyl methacrylate (hereinafter referred to as GMA), 1.6 mass parts lauryl mercaptan, 1000 mass parts methyl isobutyl ketone ( Hereinafter referred to as MIBK) and 7.5 parts by mass of 2,2'-azobisisobutyronitrile (hereinafter referred to as AIBN), the temperature was raised to 90° C. over 1 hour while stirring under a nitrogen stream, and the mixture was reacted at 90° C. for 1 hour. Next, a mixed liquid consisting of 750 parts by mass of GMA, 4.4 parts by mass of lauryl mercaptan, and 22.5 parts by mass of AIBN was added dropwise over 2 hours while stirring at 90° C., and then reacted at 100° C. for 3 hours. Subsequently, 10 parts by mass of AIBN was added and reacted at 100° C. for 1 hour, then the temperature was raised to about 120° C. and reacted for 2 hours. Cool to 60°C, replace the nitrogen inlet tube with an air inlet tube, add 507 parts by mass of acrylic acid (hereinafter referred to as AA), 2 parts by mass of p-methoxyphenol,...

Synthetic example 2

[0169]

[0170]Add 200 parts by mass of GMA, 50 parts by mass of n-butyl methacrylate (hereinafter referred to as nBMA), 1.8 parts by mass of lauryl mercaptan, 1000 parts by mass of MIBK and 7.5 parts by mass of AIBN were heated up to 90° C. over 1 hour while stirring under a nitrogen flow, and reacted at 90° C. for 1 hour. Next, a mixed liquid consisting of 600 parts by mass of GMA, 150 parts by mass of nBMA, 4.8 parts by mass of lauryl mercaptan, and 22.5 parts by mass of AIBN was added dropwise over 2 hours while stirring at 90°C, and reacted at 100°C for 3 hours. Subsequently, 10 parts by mass of AIBN was added and reacted at 100° C. for 1 hour, then the temperature was raised to about 120° C. and reacted for 2 hours. Cool to 60°C, replace the nitrogen inlet tube with an air inlet tube, add 406 parts by mass of AA, 2 parts by mass of p-methoxyphenol, and 5.4 parts by mass of triphenylphosphine and mix them, and bubble the reaction solution with air. The temperature was ...

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PUM

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Abstract

The invention relates to a protecting bond film. The film is provided with a caking agent layer on the hard paint film of a film substrate with a hard paint layer, wherein the elasticity modulus and the thickness of the film substrate are respectively from 3 to 7GPa and from 38 to 100 mums, the thickness of the hard paint layer is from 5 to 25 mums, the pencil rigidity of the hard paint layer surface of the hard paint film is above 3 Hard, the thickness of the caking agent layer is from 5 to 20 mums, the whole thickness is from 60 to 150 mums, besides, the deposited elasticity modulus at 80 DEG C is above 1.0 *10<5> Pa in a dynamic viscoelastic spectrum when a frequency is below 1 Hz.

Description

Technical field [0001] The present invention relates to a protective adhesive film provided on the surface of a display device such as a liquid crystal screen or an EL display for protecting a panel, a panel having the protective adhesive film, and a portable electronic terminal having the panel. Background technique [0002] As portable electronic terminals become smaller and shorter, image display devices (hereinafter referred to as display devices) are becoming thinner. In order to prevent damage to display devices such as liquid crystals, protective panels (hereinafter referred to as panels) are installed. In order to achieve thinning, it is effective to make the panel thinner and reduce the gap between the display device and the panel. [0003] However, conventional resin panels such as acrylic and polycarbonate have insufficient rigidity, causing the display device to deform when the panel portion is pressed with fingers, resulting in poor display, or the panel may de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/02C09J133/06B32B17/10
CPCB32B7/02B32B7/12B32B27/08B32B33/00B32B2457/20
Inventor 高桥佑辅田边弘介山田昭洋中村龙一斋藤治西泽茂年中山洋子
Owner DAINIPPON INK & CHEM INC