Conductive film

Patent metadata

Field	Value
Publication number	US-9304635-B2
Application number	US-201313944428-A
Country	US
Kind code	B2
Filing date	Jul 17, 2013
Priority date	Aug 9, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A conductive film includes an elongated film base, a first conductive layer, a second conductive layer and a third conductive layer in this order. The elongated film base has a longitudinal direction and a width direction orthogonal to the longitudinal direction. The width direction dimension of the elongated film base is greater than or equal to 1 m. The first conductive layer is an indium-based oxide layer. The second conductive layer is a metal layer. The third conductive layer is an oxidized metal layer having a thickness of 1 nm to 15 nm formed by sputter deposition.

First claim

What is claimed is:

1. A conductive film comprising:
an elongated film base, a first conductive layer, a second conductive layer and a third conductive layer in this order,
the elongated film base having a longitudinal direction and a width direction orthogonal to the longitudinal direction,
the width direction dimension of the elongated film base is greater than or equal to 1 m,
the first conductive layer being an indium-based oxide layer,
the second conductive layer being a metal layer,
the third conductive layer being an oxidized metal layer having a thickness of 1 nm to 15nm formed by sputter deposition,
wherein a surface resistance value is 0.1Ω/□ to 0.6Ω/□, and
a standard deviation of a surface resistance value in the with direction is less than or equal to 0.01Ω/□.

2. The conductive film according to claim 1 , wherein the width direction dimension of the elongated film base is 1m to 3m.

3. The conductive film according to claim 1 , wherein a surface resistance value is 0.3Ω/□ to 0.6Ω/□.

4. The conductive film according to claim 1 , wherein the standard deviation of a surface resistance value in the width direction is 0.001 to 0.005Ω/□.

5. The conductive film according to claim 1 , wherein the third conductive layer is made of one of a copper oxide, a silver oxide, a silver oxide alloy and a titanium oxide alloy.

6. The conductive film according to claim 1 , wherein the second conductive layer is made of one of copper, silver, a silver alloy and a titanium alloy.

7. The conductive film according to claim 6 , wherein the second conductive layer has a thickness of 20 nm to 700 nm.

8. The conductive film according to claim 1 , wherein the first conductive layer is made of one of an indium tin oxide, an indium zinc oxide and a composite of indium oxide and zinc oxide.

9. The conductive film according to claim 8 , wherein the first conductive layer has a thickness of 20 nm to 80 nm.

10. The conductive film according to claim 1 , wherein the elongated film base has a thickness of 80 μm to 200 μm.

11. The conductive film according to claim 10 , wherein the elongated film base is made of polycycloolefin.

Assignees

• Nitto Denko Corp

Inventors

• Fujino Nozomi
• Takao Hiroyuki

Classifications

• B32B27/325

  comprising polycycloolefins · CPC title

• B32B9/00 Primary

  Layered products comprising a {layer of a} particular substance not covered by groups B32B11/00 - B32B29/00 · CPC title

• B32B2457/208

  Touch screens · CPC title

• C23C14/086

  of zinc, germanium, cadmium, indium, tin, thallium or bismuth · CPC title

• B32B7/12 Primary

  using interposed adhesives or interposed materials with bonding properties · CPC title