Unlock instant, AI-driven research and patent intelligence for your innovation.

Conductive film and method for producing conductive film

A conductive film, conductive layer technology, applied in chemical instruments and methods, cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, etc. Problems such as the amount of conductive materials used, to achieve the effect of excellent resistance value stability and excellent cost

Active Publication Date: 2022-08-02
RESONAC CORPORATION
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such prior art, it is difficult to reduce the amount of conductive material used, so there are problems in terms of cost, difficulty in improving transparency, and development of anisotropy in conductivity.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conductive film and method for producing conductive film
  • Conductive film and method for producing conductive film
  • Conductive film and method for producing conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086]

[0087] As the binder resin, using -SO 3 Na-based polyester resin aqueous dispersion. This polyester aqueous dispersion was prepared so that the solid content concentration might be 5 mass % using PES resin A-647GEX by Takamatsu Oil Co., Ltd. Hereinafter, this polyester aqueous dispersion is referred to as a PES resin aqueous solution.

[0088] Methanol (MeOH) and 2-propanol (IPA) were prepared in order to mix with water as the dispersion medium of the above-mentioned silver nanowire dispersion liquid to prepare a mixed dispersion medium of water+alcohol.

[0089] The above-mentioned silver nanowire dispersion liquid using water as a dispersion medium and a 5 mass % aqueous solution of the above-mentioned PES resin were put into a container with a lid, various solvents were added, and the lid was closed, and then mixed by a mixing rotor. In this case, the mixed composition of the solvent was set to a mass ratio of water:MeOH:IPA=72:18:10. In addition, the mixing a...

Embodiment 2

[0109] The difference from Example 1 is that silver nanowires are applied so that the wet film thickness is about 10 μm. Except this point, it carried out similarly to Example 1. The results are shown in Table 1. It was confirmed that the occupied area of ​​silver nanowires (AgNW) in the obtained conductive film was 3.75%, and the surface resistance value was 1.8×10 3 Ω / □, the variation in surface resistance value is less than 7%, and the conductive film has uniform conductivity. In addition, it was confirmed that the total light transmittance was higher than 91.2%, the haze was less than 0.48%, and the transparency was extremely excellent.

Embodiment 3

[0111] The point of difference from Example 1 is the point of using the silver nanowire ink as a water solvent. Except this point, it carried out similarly to Example 1. The results are shown in Table 1. Compared with Example 1 in which the mixed solvent of water and alcohol was used, the deviation of the surface resistance value was slightly larger than 15%, but it was such that there was no problem in use.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The present invention provides a conductive film comprising: a polymer film, a base resin layer formed on at least one side of the polymer film, and a metal nanometer having an average diameter of 1 to 100 nm and an average aspect ratio of 100 to 2000. A wire, and a binder resin and a conductive layer formed on the base resin layer. The surface resistance value of the conductive layer is 1.0×10 2 ~1.0×10 6 Ω / □ and the variation in surface resistance value is 15% or less.

Description

technical field [0001] The present invention relates to a conductive film and a method for producing the conductive film. Background technique [0002] Metal nanowires have been attracting attention in recent years as a raw material for highly transparent and highly conductive thin films used as substitutes for ITO (indium tin oxide) films used for transparent electrodes such as touch panels. Such metal nanowires are usually produced by heating a metal compound in the presence of polyols such as polyvinylpyrrolidone and ethylene glycol (Non-Patent Document 1). [0003] Patent Documents 1 to 3 disclose transparent conductors in which a conductive layer including a particulate metal rod coating film or metal nanowires is directly formed on a polymer film such as polyester. In this case, the conductive layer is formed by directly coating a solution in which particulate metal rods or metal nanowires are dispersed on a polymer film such as polyester, and thereafter drying to rem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14H01B13/00B05D7/24B05D5/12B32B27/18
CPCB05D5/12B05D7/24B32B7/02B32B27/18H01B5/14H01B13/00H01B1/16C08J7/044
Inventor 藤平惠清水诚吾山田俊辅山木繁基里达·古纳努鲁克萨蓬
Owner RESONAC CORPORATION