Flexible touch window with reduced thickness mesh electrode layer

Patent metadata

Field	Value
Publication number	US-9817497-B2
Application number	US-201514788836-A
Country	US
Kind code	B2
Filing date	Jul 1, 2015
Priority date	Jul 1, 2014
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

A touch window includes a substrate, and an electrode part on the substrate. The sensing electrode includes a base substrate formed with a pattern part, and an electrode layer on the pattern part, where the electrode layer has a thickness in a range of 0.03 μm to 3 μm.

First claim

What is claimed is:

1. A touch window comprising:
a substrate; and
an electrode part on the substrate,
wherein the electrode part comprises:
a base substrate formed with a pattern part; and
an electrode layer on the pattern part,
wherein an anti-reflective layer is disposed only on the electrode layer in the pattern part,
wherein the electrode layer has a thickness in a range of 0.03 μm to 3 μm,
wherein the pattern part includes a first surface, a second surface, and a third surface for connecting the first and second surfaces to each other,
wherein the electrode layer is disposed on an inner side surface of the pattern part connecting with the first surface, the second surface and the third surface,
wherein the electrode layer is disposed in a shape corresponding to the first surface, the second surface and the third surface,
wherein the anti-reflective layer includes a contact surface making contact with the electrode layer and a contactless surface exposed to an outside,
wherein the anti-reflective layer is surrounded by the electrode layer,
wherein the contact surface is disposed in a shape corresponding to the electrode layer, and
wherein the area of the contact surface is greater than that of the contactless surface.

2. The touch window of claim 1 , wherein the electrode layer has a mesh shape.

3. The touch window of claim 1 , wherein the electrode layer includes a plating layer.

4. The touch window of claim 1 , wherein the base substrate includes a bottom surface making contact with the substrate and a top surface opposite to the bottom surface, and
the electrode layer has a width gradually enlarged from the bottom surface to the top surface.

5. The touch window of claim 1 , wherein the pattern part includes a first surface, a second, surface and a third surface connecting the first and second surfaces to each other, and-the electrode layer makes contact with at least one of the first to third surfaces.

6. The touch window of claim 1 , wherein the thickness of the electrode layer is different from a thickness of the anti-reflective layer.

7. The touch window of claim 1 , wherein the thickness of the electrode layer is greater than a thickness of the anti-reflective layer.

8. The touch window of claim 1 , wherein the thickness of the electrode layer is less than a thickness of the anti-reflective layer.

9. The touch window of claim 1 , wherein the electrode layer has a width in a range of 1 μm to 4 μm.

10. The touch window of claim 1 , wherein the electrode part includes at least one of a sensing electrode and a wire electrode.

11. The touch window of claim 1 , wherein the electrode part includes a sensing electrode,
the sensing electrode includes a first sensing electrode and a second sensing electrode which extend in mutually different directions, and
the first and second sensing electrodes are disposed on at least one of one surface and an opposite surface of the substrate.

12. The touch window of claim 1 , further comprising a cover substrate on the substrate.

13. A touch window comprising:
a substrate; and
an electrode part on the substrate,
wherein the electrode part comprises:
a base substrate formed with a pattern part; and
an electrode layer on the pattern part,
wherein an anti-reflective layer is disposed only on the electrode layer in the pattern part,
wherein the electrode layer includes a metal layer and a metal oxide layer on the metal layer,
wherein the pattern part includes a first surface, a second surface, and a third surface for connecting the first and second surfaces to each other,
wherein the electrode layer is disposed on an inner side surface of the pattern part connecting with the first surface, the second surface and the third surface,
wherein the electrode layer is disposed in a shape corresponding to the first surface, the second surface and the third surface,
wherein the anti-reflective layer includes a contact surface making contact with the electrode layer and a contactless surface exposed to an outside,
wherein the anti-reflective layer is surrounded by the electrode layer,
wherein the contact surface is disposed in a shape corresponding to the electrode layer, and
wherein the area of the contact surface is greater than that of the contactless surface.

14. The touch window of claim 13 , wherein the metal layer and the metal oxide layer are formed integrally with each other.

15. The touch window of claim 13 , wherein the metal layer has a thickness greater than a thickness of the metal oxide layer.

16. The touch window of claim 13 , wherein the metal layer and the metal oxide layer include metals corresponding to each other.

17. The touch window of claim 13 , wherein the metal oxide layer includes at least one of black, gray and a mixed color thereof.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Yoon Tai
• Oh Hyung Mook
• Lee Kweon Jin
• Kim Soo Hong

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

• G06F3/041 Primary

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F2203/04103

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

• G06F3/044

  by capacitive means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title