Conductive film and touch panel including the same

Patent metadata

Field	Value
Publication number	US-10282001-B2
Application number	US-201615247415-A
Country	US
Kind code	B2
Filing date	Aug 25, 2016
Priority date	Jun 20, 2013
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A conductive film may be provided that includes a base member, a first hard coating layer formed on a surface of the base member, and a conductive layer formed on the first hard coating layer. The conductive layer may include conductors composed of a nano-material forming a network structure.

First claim

What is claimed is:

1. A conductive film comprising:
a base member;
a first hard coating layer on a first surface of the base member;
a conductive layer directly on the first hard coating layer,
the conductive layer includes a plurality of nano-wires to form a network structure;
and an over-coating layer on the conductive layer to cover the nano-wires of the conductive layer, wherein some of the plurality of nano-wires are protruding from an inner region of the conductive layer and are inserted into an inner region of the over-coating layer,
wherein the conductive film includes a conductive region and a non-conductive region,
and the non-conductive region includes a residual portion having a void based on removal of only the nano-wires in the conductive layer.

2. The conductive film according to claim 1 , wherein the conductive layer includes the residual portion surrounding the nano-wires.

3. The conductive film according to claim 2 , wherein nano-wires have a thickness greater than the residual portion and extending or protruding to outside of the residual portion, and
the over-coating layer covers the conductors extending to the outside of the residual portion.

4. The conductive film according to claim 1 , further comprising at least one of a second hard coating layer on a second surface of the base member.

5. The conductive film according to claim 1 , further comprising a primer layer between the base member and the first hard coating layer.

6. The conductive film according to claim 1 , wherein the first hard coating layer includes an acrylic material.

7. The conductive film according to claim 1 , wherein a thickness of the first hard coating layer is less than a thickness of the base member, and the thickness of the first hard coating layer is greater than a thickness of the conductive layer.

8. The conductive film according to claim 1 , wherein the conductive film is provided such that the conductive region includes the conductive layer and the over-coating layer, and the non-conductive region is provided without the conductive layer and the over-coating layer.

9. A touch panel comprising:
a first conductive film comprising a base member,
a primer layer on a first surface of the base member,
a first hard coating layer on the primer layer,
a first conductive layer directly on the first hard coating layer,
and an over-coating layer on the first conductive layer,
the first conductive layer includes a plurality of nano-wires to form a network structure,
and the over-coating layer to cover the nano-wires of the first conductive layer;
a second conductive layer constituting a second electrode that is different from the first conductive layer;
and a cover substrate for covering the first conductive film and the second conductive layer,
wherein the cover substrate being a separate member from the first conductive film, wherein the first conductive layer includes a conductive region,
and the conductive region of the first conductive layer includes a conductive portion in which the nano-wires are provided and a non-conductive portion in which the nano-wires are not provided,
wherein some of the plurality of nano-wires are protruding from an inner region of the first conductive layer and are inserted into an inner region of the over-coating layer,
wherein the first conductive film includes a conductive region and a non-conductive region,
and the non-conductive region includes a residual portion having a void based on removal of only the nano-wires in the first conductive layer.

10. The touch panel according to claim 9 , wherein the first conductive film is provided such that the conductive region includes the first conductive layer and the over-coating layer, and the non-conductive region is provided without the first conductive layer and the over-coating layer.

11. The touch panel according to claim 10 , further comprising:
at least one transparent adhesion layer positioned at the non-conductive region.

12. The touch panel according to claim 9 , wherein the first conductive layer includes the residual portion surrounding the nano-wires.

13. The touch panel according to claim 12 , wherein nano-wires have a thickness greater than the residual portion and extending or protruding to outside of the residual portion, and
the over-coating layer covers the nano-wires extending to the outside of the residual portion.

14. The touch panel according to claim 9 , further comprising at least one of a second hard coating layer on a second surface of the base member.

15. The touch panel according to claim 9 , wherein the first hard coating layer includes an acrylic material.

16. The touch panel according to claim 9 , wherein a thickness of the first hard coating layer is less than a thickness of the base member, and the thickness of the first hard coating layer is greater than a thickness of the first conductive layer.

Assignees

• Lg Electronics Inc

Inventors

• Kim Yuhee
• Hur Yangwook
• Choi Jinyoung
• Lee Munsu

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• H05K1/097

  Inks comprising nanoparticles and specially adapted for being sintered at low temperature (H05K1/095 takes precedence) · CPC title

• H05K2201/026

  Nanotubes or nanowires · CPC title

• G06F3/044

  by capacitive means · CPC title