Electrode member and touch panel including the same

Patent metadata

Field	Value
Publication number	US-10514731-B2
Application number	US-201815870087-A
Country	US
Kind code	B2
Filing date	Jan 12, 2018
Priority date	Dec 3, 2012
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

Disclosed is a touch panel. The touch panel includes a substrate, and an electrode part formed in a mesh shape on the substrate. The electrode part includes a resin layer comprising first and second sub-patterns, and a transparent electrode on the first sub-pattern. A ratio of a width of the first sub-pattern to a width of the second sub-pattern is in a range of 1:0.01 to 1:0.5.

First claim

What is claimed is:

1. A touch panel comprising:
a substrate comprising an active area and an unactive area;
an electrode part on the active area of the substrate;
a wire on the unactive area of the substrate to electrically connect to the electrode part; and
a wire connection part provided between the wire and the electrode part,
wherein the electrode part comprises a first electrode and a second electrode,
wherein the first electrode comprises a plurality of first sensor parts and a first connection electrode part to connect the first sensor parts with each other in a first direction,
wherein the second electrode comprises a plurality of second sensor parts and a second connection electrode part to connect the second sensor parts with each other in a second direction crossing the first direction,
wherein an insulating layer is interposed between the first connection electrode part and the second connection electrode part,
wherein the electrode part is provided in a mesh shape,
wherein each of the first sensor parts, the first connection electrode part, the second sensor parts, and the second connection electrode part comprises a plurality of mesh openings and a plurality of mesh lines;
wherein a width of each mesh line is in a range of 500 nm to 3 μm,
wherein the electrode part comprises an electrode material,
wherein the electrode material comprises aluminum (Al),
wherein the wire connection part electrically contacts the plurality of mesh lines of a first sensor part of the plurality of first sensor parts,
wherein the plurality of mesh lines of the first connection electrode part and the plurality of mesh lines of the second connection electrode part each comprises a plurality of first sub mesh lines spaced apart from each other in a third direction and a plurality of second sub mesh lines spaced apart from each other in a fourth direction different from the third direction,
wherein the first connection electrode part comprises a plurality of first connection points where first sub mesh lines of the plurality of first sub mesh lines of the first connection electrode part intersect with second sub mesh lines of the plurality of second sub mesh lines of the first connection electrode part,
wherein each first sub mesh line of the first connection electrode part extends beyond each second sub mesh line with which it shares a first connection point such that a length of each first sub mesh line of the first connection electrode part is longer than a distance between two outermost first connection points of that first sub mesh line,
wherein the second connection electrode part comprises a plurality of second connection points where first sub mesh lines of the plurality of first sub mesh lines of the second connection electrode part intersect with second sub mesh lines of the plurality of second sub mesh lines of the second connection electrode part, and
wherein each first sub mesh line of the second connection electrode part extends beyond each second sub mesh line with which it shares a second connection point such that a length of each first sub mesh line of the second connection electrode part is longer than a distance between two outermost second connection points of that first sub mesh line.

2. A touch panel comprising:
an electrode member;
a cover window on the electrode member; and
a dummy layer interposed between the electrode member and the cover window,
wherein the electrode member comprises:
a substrate comprising an active area and an unactive area;
an electrode part on the active area of the substrate;
a wire on the unactive area of the substrate to electrically connect to the electrode part; and
a wire connection part provided between the wire and the electrode part,

wherein the electrode part comprises a first electrode and a second electrode,
wherein the first electrode comprises a plurality of first sensor parts and a first connection electrode part to connect the first sensor parts with each other in a first direction,
wherein the second electrode comprises a plurality of second sensor parts and a second connection electrode part to connect the second sensor parts with each other in a second direction crossing the first direction,
wherein an insulating layer is interposed between the first connection electrode part and the second connection electrode part,
wherein the electrode part is provided in a mesh shape,
wherein each of the first sensor parts, the first connection electrode part, the second sensor parts, and the second connection electrode part comprises a plurality of mesh openings and a plurality of mesh lines;
wherein a width of each mesh line is in a range of 500 nm to 3 μm,
wherein the electrode part comprises an electrode material,
wherein the electrode material comprises aluminum (Al),
wherein the wire connection part electrically contacts the plurality of mesh lines of a first sensor part of the plurality of first sensor parts,
wherein the plurality of mesh lines of the first connection electrode part and the plurality of mesh lines of the second connection electrode part each comprises a plurality of first sub mesh lines spaced apart from each other in a third direction and a plurality of second sub mesh lines spaced apart from each other in a fourth direction different from the third direction,
wherein the first connection electrode part comprises a plurality of first connection points where first sub mesh lines of the plurality of first sub mesh lines of the first connection electrode part intersect with second sub mesh lines of the plurality of second sub mesh lines of the first connection electrode part,
wherein each first sub mesh line of the first connection electrode part extends beyond each second sub mesh line with which it shares a first connection point such that a length of each first sub mesh line of the first connection electrode part is longer than a distance between two outermost first connection points of that first sub mesh line,
wherein the second connection electrode part comprises a plurality of second connection points where first sub mesh lines of the plurality of first sub mesh lines of the second connection electrode part intersect with second sub mesh lines of the plurality of second sub mesh lines of the second connection electrode part, and
wherein each first sub mesh line of the second connection electrode part extends beyond each second sub mesh line with which it shares a second connection point such that a length of each first sub mesh line of the second connection electrode part is longer than a distance between two outermost second connection points of that first sub mesh line.

3. The touch panel of claim 1 , wherein the electrode material comprises at least one selected from the group consisting of copper (Cu), nickel (Ni), tin (Sn), zinc (Zn), gold (Au), silver (Ag), and any alloys thereof.

4. The touch panel of claim 2 , wherein the electrode material further comprises at least one selected from the group consisting of copper (Cu), nickel (Ni), tin (Sn), zinc (Zn), gold (Au), silver (Ag), and any alloys thereof.

5. The touch panel of claim 1 , wherein the material of the first sensor parts, the first connection electrode part, the second sensor parts, and the second connection electrode part is the same as that of the wire and the wire connection part.

6. The touch panel of claim 2 , wherein the material of the first sensor parts, the first connection electrode part, the second sensor parts, and the second connection electrode part is the same as that of the wire and the wire connection part.

7. The touch panel of claim 2 , wherein the electrode part comprises a resin layer.

8. The touch panel of claim 7 , wherein the electrode material i

Assignees

• Lg Innotek Co Ltd

Inventors

• Lee Young Jae
• Kim Hyun Soo
• Bang Jung Hwan
• Shin Jun Sik
• Yang Joon Hyuk
• Seong Dong Mug
• Eom Jun Phill
• Yoo Kyoung Jong
• Lee Jun
• Koo Chan Kyu

Classifications

• G06F2203/04103

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

• 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

• G06F3/044

  by capacitive means · CPC title

• G06F1/1692 Primary

  the I/O peripheral being a secondary touch screen used as control interface, e.g. virtual buttons or sliders · CPC title

• G06F3/0446 Primary

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title