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Transparent Conductive Laminated Film

A technology of transparent conductivity and laminated film, which is applied to the direction of conductive layer, coating, layered products, etc. The effect of reducing the reduction of visibility and suppressing

Active Publication Date: 2014-10-29
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In addition, in recent years, there is a desire to increase the size of touch screens mounted on mobile devices such as mobile phones
In particular, as mentioned above, the transparent conductive film used for electrostatic capacitance is used after patterning, so if the touch panel is enlarged, the wiring resistance of each pattern electrode will increase, and the operation speed will decrease.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] Add toluene / MEK (80 / 20: mass ratio) as a solvent to 100 parts by mass of an ultraviolet-curable acrylic (ester) resin (manufactured by Dainichi Seika Kogyo Co., Ltd., SEIKABIMU EXF-01J) containing a photopolymerization initiator and mix The solvent was adjusted to have a solid content concentration of 50% by mass, stirred and dissolved uniformly, and prepared as a coating liquid.

[0125] The prepared coating solution was applied to a biaxially oriented transparent PET film (manufactured by Toyobo Co., Ltd., A4300, thickness 100 μm) having an easy-adhesive layer on both sides with a Meyer Bar coater so that the thickness of the coating film was 5 μm. After drying at 80°C for 1 minute, irradiate ultraviolet rays (light intensity: 300mJ / cm2) with an ultraviolet irradiation device (manufactured by EYEGRAPHICS CO., LTD. 2 ) to cure the coating. Next, after preparing a coating film similarly to the opposite surface, it heated at 180 degreeC for 1 minute, and reduced the vol...

Embodiment 2

[0134] Except that the target material when forming a transparent conductive film was changed to indium oxide containing 1% by mass of tin oxide (manufactured by Sumitomo Metal Mining Co., Ltd., density 7.1g / cm 3 ) except that in the same manner as in Example 1, a transparent conductive laminated film was produced.

Embodiment 3

[0136] In addition to changing the target material when forming a transparent conductive film to indium oxide containing 5% by mass of tin oxide (manufactured by Sumitomo Metal Mining Co., Ltd., density 7.1g / cm 3 ) except that in the same manner as in Example 1, a transparent conductive laminated film was produced.

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Abstract

Disclosed is a transparent conductive multilayer film for an electrode film that is used in a capacitive touch panel or the like, and has a low surface resistance. When a transparent conductive thin film is patterned in the transparent conductive multilayer film, the pattern is not highly visible since the difference in the optical characteristics is small between the portion with the transparent conductive thin film and the portion without the transparent conductive thin film. Specifically disclosed is a transparent conductive multilayer film which has a structure wherein a high refractive index layer, a low refractive index layer and a transparent conductive thin film layer are arranged in this order on a base that is composed of a transparent plastic film. The transparent conductive multilayer film is characterized in that the high refractive index layer has a refractive index of 1.70-2.50 and a film thickness of 4-20 nm, the low refractive index layer has a refractive index of 1.30-1.60 and a film thickness of 20-50 nm, and the transparent conductive thin film layer has a specific resistance of 1.0-4.6 × 10-4 O·cm and a film thickness of 10-28 nm.

Description

technical field [0001] The present invention relates to a transparent conductive laminated film in which a high refractive index layer, a low refractive index layer, and a transparent conductive thin film layer are sequentially laminated on a base material composed of a transparent plastic film. Especially when used as a patterned electrode film for capacitive touch screens, etc., the surface resistance value is low, the size of the touch screen can be increased, and the gap between the part with the transparent conductive film layer and the part where the transparent conductive film layer is removed Since the difference in optical characteristics is small, it is a technology related to a transparent conductive laminated film that can improve visibility. Background technique [0002] Applications that utilize the conductivity of a transparent conductive film in which a transparent and low-resistance thin film is laminated on a base material made of a transparent plastic film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B7/02B32B7/023B32B9/00B32B27/00C23C14/06H01B5/14
CPCB32B7/02B32B2307/202B32B2307/40B32B2307/412B32B2307/418B32B2457/00B32B2457/20B32B2457/202B32B2457/208B32B7/023H01B5/14G02B1/10
Inventor 村上英生大谷寿幸多多见央
Owner TOYOBO CO LTD
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