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Ultraviolet-curable liquid organopolysiloxane composition for image display device

An image display device, polysiloxane technology, applied in bonding methods, nonlinear optics, instruments, etc., can solve the problems of acid component corrosion, metal corrosion, corroded circuits, etc., achieving no corrosion, high transparency, Excellent corrosion resistance

Inactive Publication Date: 2020-08-11
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since it uses a carboxyl group-containing monomer as an adhesive component, when it comes into direct contact with a metal surface or a metal thin film layer, the metal is corroded, so it is difficult to use it for this purpose (for laminating the cover plate and the ITO surface)
[0007] Furthermore, the projected capacitive type and the like have the problem that the acid component contained in the adhesive corrodes a transparent conductive film such as ITO formed on a glass or resin sheet or film, or corrodes a circuit obtained by etching it. And silver, copper, aluminum and other fine metal wiring
[0011] In Patent Document 5, countermeasures for hardening of dark areas are mentioned, but there are problems such as odor and corrosion due to the use of mercapto groups

Method used

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  • Ultraviolet-curable liquid organopolysiloxane composition for image display device
  • Ultraviolet-curable liquid organopolysiloxane composition for image display device
  • Ultraviolet-curable liquid organopolysiloxane composition for image display device

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Experimental program
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preparation example Construction

[0152] -Preparation of the composition-

[0153] The method for preparing the composition of the present invention is not particularly limited. As a preparation method of the composition of this invention, the method of using each said component and mixing them together can be mentioned.

[0154] The physical properties of the cured product obtained from the composition of the present invention depend on the molecular weight of the reactive silicone of the general formula (1), the curing method used, and the like. Generally, the greater the molecular weight of the reactive silicone, the softer the cured reaction product can be given.

[0155] -Curing of the composition-

[0156] Examples of the ultraviolet light source for curing the composition of the present invention include general mercury vapor lamps or metal halide lamps designed to emit ultraviolet energy in each ultraviolet band, LED lamps emitting a single wavelength, and the like.

[0157] It is desirable that the...

Embodiment 1～6、 comparative example 1～5

[0180] Prepare the following (A-1) component, (A-2) component, (B) component, (C-1) component, (C-2) component, (C-3) component and modifier component, preparation table Silicone composition with the composition shown in 1 (numbers are parts by mass). Using a transport type UV irradiation device manufactured by Japan StorageBattery Co., Ltd., under a nitrogen atmosphere, the resulting composition was subjected to ultraviolet irradiation (500 mJ / cm2) based on a high-pressure mercury lamp three times. 2 ), to obtain a cured product with a thickness of 2mm. The hardness and transmittance of the cured product were evaluated by the following methods, and the results are shown in Table 2.

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Abstract

Provided is an ultraviolet-curable liquid organopolysiloxane composition for an image display device, which is capable of providing a cured product that has high transparency, excellent adhesiveness,good high-temperature durability, and excellent step-difference followability, and which is capable of being heat-cured even in a dark region. The ultraviolet-curable liquid organopolysiloxane composition for an image display device is characterized by containing: 100 parts by mass of (A) an organopolysiloxane or a mixture thereof with a mass ratio (A-1):(A-2) of (A-1) and (A-2) in the range of 100: 0 to 50: 50, (A-1) being a linear organopolysiloxane having at least two structures represented by general formula (1) in the molecule, and (A-2) being a branched organopolysiloxane having at leastone structure represented by general formula (1) in the molecule; 0.01 to 10 parts by mass of (B) a photopolymerization initiator; and (C) 0.01-5 parts by mass of a peroxide having a one-hour decomposition half-life temperature of 50-100 DEG C. [Chemical Formula 1] is shown in the description.

Description

technical field [0001] The present invention relates to an ultraviolet curable liquid organopolysiloxane composition for image display devices, an adhesive for image display devices containing the composition, an image display device using the adhesive, and an adhesive using the adhesive. Adhesive method. Background technique [0002] A touch panel (also referred to as a touch panel) as an optical display element combines an image display unit such as a liquid crystal display device and an input unit as a device for immediately recognizing coordinate axes and performing input. In the input unit, for example, a support plate (glass plate or resin plate) having a transparent conductive film (transparent conductive film) such as ITO (indium tin oxide) and a cover panel (glass or resin) are bonded together. The input unit is usually formed on the display surface side of an FPD (Flat Panel Display) or CRT (Cathode Ray Tube) such as a liquid crystal display instead of a panel for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/10C08G77/44G02F1/1339
CPCC08G77/44C09J183/10G02F1/1339C08G77/20C08G77/50C08L83/06C08L83/14C09J5/00C09J183/06C09J183/14
Inventor 冈以气代岩田充弘
Owner SHIN ETSU CHEM IND CO LTD
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