Transparent conductor and touch panel

Patent metadata

Field	Value
Publication number	US-10527873-B2
Application number	US-201615556107-A
Country	US
Kind code	B2
Filing date	Mar 25, 2016
Priority date	Mar 26, 2015
Publication date	Jan 7, 2020
Grant date	Jan 7, 2020

Abstract

Provided is a transparent conductor including a transparent resin substrate, a first metal oxide layer, a metal layer containing a silver alloy, and a second metal oxide layer laminated in the order presented, wherein the second metal oxide layer contains zinc oxide, indium oxide, titanium oxide, and tin oxide.

First claim

The invention claimed is:

1. A transparent conductor comprising:
a hardcoat layer, a transparent resin substrate, another hardcoat layer, a first metal oxide layer, a metal layer containing a silver alloy, and a second metal oxide layer laminated in the order presented,
wherein the second metal oxide layer contains zinc oxide, indium oxide, titanium oxide, and tin oxide, and
wherein the hardcoat layer and the another hardcoat layer contain a cured resin.

2. The transparent conductor according to claim 1 ,
wherein, in the second metal oxide layer, a content of the zinc oxide is 20 to 68 mol %, a content of the indium oxide is 15 to 35 mol %, a content of the titanium oxide is 5 to 15mol %, and a content of the tin oxide is 5 to 40 mol %, with respect to a total of four components of the zinc oxide, the indium oxide, the titanium oxide, and the tin oxide in terms of ZnO, In 2 O 3 , TiO 2 , and SnO 2 , respectively.

3. The transparent conductor according to claim 1 , wherein a thickness of the metal layer is 4 to 11 nm.

4. The transparent conductor according to claim 1 ,
wherein the first metal oxide layer contains zinc oxide, indium oxide, titanium oxide, and tin oxide, and,
wherein, in the first metal oxide layer, a content of the zinc oxide is 20 to 68 mol %, a content of the indium oxide is 15 to 35 mol %, a content of the titanium oxide is 5 to 15mol %, and a content of the tin oxide is 5 to 40 mol %, with respect to a total of four components of the zinc oxide, the indium oxide, the titanium oxide, and the tin oxide in terms of ZnO, In 2 O 3 , TiO 2 , and SnO 2 , respectively.

5. The transparent conductor according to claim 1 ,
wherein the silver alloy is an alloy of Ag and at least one metal selected from the group consisting of Pd, Cu, Nd, In, Sn, and Sb.

6. A touch panel comprising a sensor film on a panel sheet,
wherein the sensor film is configured with the transparent conductor according to claim 1 .

7. The transparent conductor according to claim 1 , wherein an absolute value of a refractive index difference between the transparent resin substrate and the hardcoat layer is 0.1 or less, and an absolute value of a refractive index difference between the transparent resin substrate and the another hardcoat layer is 0.1 or less.

8. A touch panel comprising a sensor film on a panel sheet,
wherein the sensor film is configured with the transparent conductor according to claim 7 .

9. A touch panel comprising a sensor film on a panel sheet,
wherein the sensor film is configured with a transparent conductor,
wherein the transparent conductor includes a transparent resin substrate, a first metal oxide layer, a metal layer containing a silver alloy, and a second metal oxide layer laminated in the order presented, and
wherein the second metal oxide layer contains zinc oxide, indium oxide, titanium oxide, and tin oxide.

10. The touch panel according to claim 9 ,
wherein, in the second metal oxide layer, a content of the zinc oxide is 20 to 68 mol %, a content of the indium oxide is 15 to 35 mol %, a content of the titanium oxide is 5 to 15mol %, and a content of the tin oxide is 5 to 40 mol %, with respect to a total of four components of the zinc oxide, the indium oxide, the titanium oxide, and the tin oxide in terms of ZnO, In 2 O 3 , TiO 2 , and SnO 2 , respectively.

11. The touch panel according to claim 9 , wherein a thickness of the metal layer is 4 to 11 nm.

12. The touch panel according to claim 9 ,
wherein the first metal oxide layer contains zinc oxide, indium oxide, titanium oxide, and tin oxide, and
wherein, in the first metal oxide layer, a content of the zinc oxide is 20 to 68 mol %, a content of the indium oxide is 15 to 35 mol %, a content of the titanium oxide is 5 to 15mol %, and a content of the tin oxide is 5 to 40 mol %, with respect to a total of four components of the zinc oxide, the indium oxide, the titanium oxide, and the tin oxide in terms of ZnO, In 2 O 3 , TiO 2 , and SnO 2 , respectively.

13. The touch panel according to claim 9 ,
wherein the silver alloy is an alloy of Ag and at least one metal selected from the group consisting of Pd, Cu, Nd, In, Sn, and Sb.

Assignees

• Tdk Corp

Inventors

• Shingai Hiroshi
• Tamagawa Yoshihisa
• Sakurai Motohiro

Classifications

• H01B5/14

  comprising conductive layers or films on insulating-supports · CPC title

• B32B9/00

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

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title

• G02F1/133553

  Reflecting elements (associated to illuminating devices G02F1/133605) · CPC title

• B32B2311/20

  Zinc · CPC title