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Transparent conductive film, touch panel, and display device

A technology of transparent conductive film and transparent conductive film, which is applied to conductive layers on insulating carriers, electrical digital data processing, optics, etc. Layer interface reflection and other problems, to achieve the effect of improved sliding

Inactive Publication Date: 2014-09-24
TORAY ADVANCED FILM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the existence of an internal void layer (air layer) in a display device equipped with a touch panel increases the interface reflection between the transparent conductive film and the air layer, thereby causing defects such as a decrease in the transmittance of light from the display panel. Happening

Method used

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  • Transparent conductive film, touch panel, and display device
  • Transparent conductive film, touch panel, and display device
  • Transparent conductive film, touch panel, and display device

Examples

Experimental program
Comparison scheme
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Embodiment

[0166] Hereinafter, the present invention will be described in further detail through examples, but the present invention is not limited by these examples. In addition, the measurement method and evaluation method in this Example are shown below.

[0167] (1) Measurement of the refractive index of the substrate film

[0168] The refractive index of the base film (PET film) was measured with an Abbe refractometer according to JIS K7105 (1981).

[0169] (2) Measurement of the refractive index of the easily bonding layer and the low refractive index layer

[0170] For the coating film (dried thickness of about 2 μm) formed by coating the respective coating compositions of the easy-adhesion layer and the low-refractive index layer on the silicon wafer with a spin coater, under the temperature condition of 25°C, The refractive index at 633 nm was measured with a phase difference measuring device (manufactured by Nikon Corporation, NPDM-1000).

[0171] (3) The thickness of the ea...

manufacture example 1

[0246] On one side of a polyethylene terephthalate film (PET film) with a refractive index of 1.65 and a thickness of 100 μm (the side where the low refractive index layer is laminated), the following easy-adhesive layer A is laminated so that the dry thickness The thickness was 90 nm, and a PET film with an easy-adhesive layer was obtained.

[0247] The thickness of the easily bonding layer of the PET film with an easily bonding layer obtained above was 90 nm, and the refractive index of the easily bonding layer was 1.64. This easily bonding layer satisfies condition 1.

[0248] Moreover, the following easily bonding layer Z was laminated|stacked on the other surface (the surface on which the transparent conductive film was laminated) of the PET film so that the dry thickness might be 90 nm.

[0249]

[0250] 100 parts by mass of polyester resin having a refractive index of 1.64, 5 parts by mass of a melamine-based crosslinking agent, and 2 parts by mass of particles A wer...

manufacture example 2

[0255] On one side of a polyethylene terephthalate film (PET film) with a refractive index of 1.65 and a thickness of 100 μm (the side on which the low refractive index layer is laminated), the following easy-adhesive layer B is laminated so that the dry thickness is 20nm, to obtain a PET film with an easy-adhesive layer.

[0256] The thickness of the easily bonding layer of the PET film with an easily bonding layer obtained above was 20 nm, and the refractive index of the easily bonding layer was 1.64. This easily bonding layer satisfies Condition 1 and Condition 2.

[0257] Moreover, the easy-adhesion layer Z was laminated|stacked similarly to manufacture example 1 on the other surface (the surface on which the transparent conductive film was laminated) of the PET film so that the dry thickness might be 90 nm.

[0258]

[0259] 100 parts by mass of a polyester resin having a refractive index of 1.64, 5 parts by mass of a melamine-based crosslinking agent, and 2 parts by m...

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Abstract

Provided is a low cost, transparent conductive film having good antireflection properties. The transparent conductive film: has a transparent conductive membrane on one surface of a base material film having a refractive index of 1.6-1.7; and has only one low-refractive index layer having a refractive index of no more than 1.42 and a thickness of 80-120 nm, on the other surface of the base material film, having a highly adhesive layer therebetween. The highly adhesive layer fulfills condition 1, condition 2, or condition 1 and condition 2. Condition 1: The absolute value for the difference between the refractive index of the base material film and the refractive index of the highly adhesive layer is no more than 0.08. Condition 2: The thickness of the highly adhesive layer is at least 5 nm and less than 50 nm.

Description

technical field [0001] The present invention relates to a transparent conductive film with good light transmittance. Specifically, it relates to a transparent conductive film capable of suppressing a decrease in the transmittance of light from the display panel in a touch panel and a display device using the transparent conductive film. conductive film. Background technique [0002] For transparent conductive films used in touch panels and the like, it is known that in order to impart scratch resistance to the touch input surface or anti-reflection to external light, the opposite surface of the transparent conductive film (for the base film) In other words, functional layers such as a hard coat layer, an antireflection layer, and an antiglare layer are laminated on the surface opposite to the surface on which the transparent conductive film is provided (Patent Documents 1 and 2). [0003] In addition, the existence of an internal void layer (air layer) in a display device e...

Claims

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Application Information

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IPC IPC(8): H01B5/14B32B7/02G02B1/11G06F3/041
CPCG06F2203/04103G06F3/041G02B1/116G02B1/10G06F3/044G06F3/045
Inventor 桐本高代志中道夏树
Owner TORAY ADVANCED FILM CO LTD
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