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Transparent conductive laminate film, touch panel having this transparent conductive laminate film, and production method for this transparent conductive laminate film

A transparent conductive layer and conductive layer technology, which is applied to the conductive layer on the insulating carrier, layered products, thin material processing, etc., can solve the problems of complex structure of conductive film and high production cost

Inactive Publication Date: 2005-08-10
NOF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The conductive thin film of the second prior art has a very complicated structure, and its production cost is also high due to a large number of optical thin films

Method used

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  • Transparent conductive laminate film, touch panel having this transparent conductive laminate film, and production method for this transparent conductive laminate film
  • Transparent conductive laminate film, touch panel having this transparent conductive laminate film, and production method for this transparent conductive laminate film
  • Transparent conductive laminate film, touch panel having this transparent conductive laminate film, and production method for this transparent conductive laminate film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0057] Embodiments of the present invention are now described in more detail. The present invention is not limited to the following examples, and the refractive index of each layer except the conductive layer is also measured according to the following steps.

[0058] (1) Using a dip coater (manufactured by SUGIYAMA-GEN RIKAGAKUKI CO., LTD.), the coating solution of each layer was coated on a PET film with a refractive index of 1.63 (product name: A4100, supplied by Toyobo Co., Ltd.), while adjusting The optical thickness (n×d) is about 110 nm after drying.

[0059] (2) After the coating is dried, it is irradiated with ultraviolet light (ultraviolet irradiation device: 120W high-pressure mercury lamp, 400mJ, manufactured by IWASAKI ELECTRIC Co., Ltd.) in a nitrogen atmosphere to make it harden.

[0060] (3) The back side (the side opposite to the cured coating layer) of the PET film was roughened by sanding and coated with a black paint to prepare a test sample. The specular...

preparation example 1

[0066] (Preparation of Coating Solution (H-1) for Intermediate Refractive Index Layer)

[0067] 80 parts by weight of zirconia microparticles (average particle diameter: 0.04 μm), 15 parts by weight of tetramethylolmethane triacrylate, 900 parts by weight of butanol, and 1 part by weight of a photopolymerization initiator (product name: IRGACURE 907, provided by Ciba-Geigy Co., Ltd.) to prepare the coating liquid (H-1) for the intermediate refractive index layer. The refractive index of the cured product obtained after coating liquid H-1 was cured by ultraviolet light was 1.77.

preparation example 2

[0069] (Preparation of Coating Solution (H-2) for Intermediate Refractive Index Layer)

[0070]In addition to replacing 80 parts by weight of zirconia particles (average particle size: 0.04 μm) with 80 parts by weight of titanium oxide particles (average particle size: 0.03 μm), an intermediate refraction was prepared in the same manner as in Preparation Example 1. The coating solution H-2 of the rate layer. The refractive index of the cured product obtained after coating liquid H-1 was cured by ultraviolet light was 1.85.

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Abstract

A touch panel-use transparent conductive laminate film little in coloring of transmitted beam and high in transmittance. The transparent conductive laminate film (100) comprises an intermediate layer (B) laminated on a transparent substrate(A) and having an optical film thickness of 100-175 nm, and a conductive layer (C) having an optical film thickness of 10-60 nm, the refractive index of the intermediate layer being between that of the substrate and that of the conductive layer at 1.7-1.85.

Description

technical field [0001] The invention relates to a transparent conductive laminated film and a touch panel using the film. The film has low manufacturing cost, simple manufacturing process and less discoloration through light transmission. Background technique [0002] A touch panel has been known as a device used on the display surfaces of various display devices, such as liquid crystal displays and cathode ray tubes (CRTs), and for inputting information through a touch panel screen. Typical types of touch panels include resistive touch panels which comprise two electrode substrates arranged such that the conductive layers on each substrate face each other. [0003] Conventional electrode substrates used in resistive touch panels include: a substrate made of a glass plate, a resin sheet, or a thermoplastic polymer film; and a conductive layer formed on the surface of the substrate. The conductive layer contains conductive metal oxides, such as indium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/02B32B7/00G06F3/045
CPCB32B7/02B32B7/00Y10T428/24942Y10T428/266Y10T428/24975Y10T428/31678Y10T428/31616B32B7/025G06F1/169B32B2307/412G06F1/1692
Inventor 服部真士吉冈健介
Owner NOF CORP
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