# US 10,120,229 B2 · Touch panel and method for manufacturing the same

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- Number: US 10,120,229 B2
- Document ID: US10120229B2
- Status: Granted
- Kind: B2
- Application number: 15/866,141
- Filed: 2018-01-09
- Published: 2018-05-24
- Granted: 2018-11-06
- Earliest claimed: 2011-01-19
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Kyoung Hoon Chai; Byung Soo Kim; Keun Sik Lee; Sun Hwa Lee; Chung Won Seo; Hyuk Jin Hong
- Web page: https://patentgrep.com/patent/US10120229B2

## CPC

- G06F 3/0446: {using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes}
- G02F 1/13338: {Input devices, e.g. touch panels}
- G06F 3/0445: {using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer}
- G06F 3/0412: {Digitisers structurally integrated in a display}
- G06F 2203/04111: Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
- G06F 2203/04112: 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
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## Abstract

Disclosed are a touch panel and a method for manufacturing the same. The touch panel according to one embodiment includes the touch panel including a substrate, a first transparent electrode including a first sensor part formed on the substrate in a first direction and a first electrode connection part for electric connection of the first sensor part, and a second transparent electrode electrically insulated from the first transparent electrode, and including a second sensor part formed in a second direction crossing the first direction and a second electrode connection part for electric connection of the second sensor part. The second electrode connection part has a mesh shape. The touch panel according to another embodiment includes a substrate, a transparent electrode base spaced apart from the substrate, and a transparent electrode on the transparent electrode base. The transparent electrode comprises a first electrode including a first sensor part formed in one direction and a first electrode connection part for electrical connection of the first sensor part; and a second electrode, which is electrically insulated from the first electrode, and includes a second sensor part formed in a second direction crossing the first direction and a second electrode connection part for electrical connection of the second sensor part. The second electrode connection part has a mesh shape.

## Claims

### Claim 1

A touch panel comprising:
a substrate including a first surface and a second surface opposite to each other;
a first transparent electrode including a first sensor part formed on the substrate in a first direction and
a first electrode connection part for electric connection of the first sensor part on the first surface of the substrate;
a second transparent electrode electrically insulated from the first transparent electrode, and including
a second sensor part formed in a second direction crossing the first direction and
a second electrode connection part for electric connection of the second sensor part on the first surface of the substrate;
an interconnection connected to the first transparent electrode and the second transparent electrode on the first surface of the substrate; and
an intermediate layer provided on the first surface of the substrate;
wherein the first sensor part, the first electrode connection part, the second sensor part, the second electrode connection part, and the interconnection are disposed on the first surface of the substrate;
wherein the second electrode connection part has a mesh shape comprising a plurality of mesh lines formed in at least two layers, the at least two layers of the second electrode connection part comprising a first layer and a second layer disposed on the first layer;
wherein the second electrode connection part has a line width of the mesh lines in a range of 1 nm to 5 μm;
wherein the intermediate layer is disposed between the second electrode connection part and the first electrode connection part, and
wherein the intermediate layer includes a first contact hole and a second contact hole to electrically connect the second sensor part with the second electrode connection part,
wherein the plurality of mesh lines comprises a first outermost mesh line and a second outermost mesh line that are spaced apart from each other, and
wherein at least a part of the first outermost mesh line and at least a part of the second outermost mesh line are disposed on and overlap the first sensor part in a vertical direction perpendicular to the first surface of the substrate.

### Claim 2

A touch panel comprising:
a substrate including a first surface and a second surface opposite to each other;
a transparent electrode base spaced apart from the second surface of the substrate, the transparent electrode base including a third surface and a fourth surface opposite to each other;
an intermediate layer and a transparent electrode disposed on the third surface of the transparent electrode base,
an interconnection connected to the transparent electrode on the third surface of the transparent electrode base; and
wherein the transparent electrode is disposed between the second surface of the substrate and the third surface of the transparent electrode base,
wherein the transparent electrode comprises a first electrode including a first sensor part formed in one direction and
a first electrode connection part for electrical connection of the first sensor part; and
a second electrode, which is electrically insulated from the first electrode, including a second sensor part formed in a second direction crossing the first direction and
a second electrode connection part for electrical connection of the second sensor part;
wherein the second electrode connection part has a mesh shape comprising a plurality of mesh lines formed in at least two layers, the at least two layers of the second electrode connection part comprising a first layer and a second layer disposed on the first layer;
wherein the second electrode connection part has a line width of the mesh lines in a range of 1 nm to 5 μm;
wherein the intermediate layer is disposed between the second electrode connection part and the first electrode connection part,
wherein the intermediate layer includes a first contact hole and a second contact hole to electrically connect the second sensor part with the second electrode connection part,
wherein the plurality of mesh lines comprises a first outermost mesh line and a second outermost mesh line that are spaced apart from each other, and
wherein at least a part of the first outermost mesh line and at least a part of the second outermost mesh line are disposed on and overlap the first sensor part in a vertical direction perpendicular to the first surface of the substrate.

### Claim 3 (depends on 1)

The touch panel of claim 1, wherein the intermediate layer is disposed on the second electrode connection part, and the first electrode connection part is disposed on the intermediate layer.

### Claim 4 (depends on 2)

The touch panel of claim 2, wherein the intermediate layer is disposed on the second electrode connection part, and the first electrode connection part is disposed on the intermediate layer.

### Claim 5 (depends on 1)

The touch panel of claim 1, wherein the second electrode connection part has an extended width in a middle portion thereof, and wherein the first outermost mesh line and the second outermost mesh line are spaced apart from each other by a maximum distance at an intermediate point between the first contact hole and the second contact hole.

### Claim 6 (depends on 2)

The touch panel of claim 2, wherein the second electrode connection part has an extended width in a middle portion thereof, and wherein the first outermost mesh line and the second outermost mesh line are spaced apart from each other by a maximum distance at an intermediate point between the first contact hole and the second contact hole.

### Claim 7 (depends on 1)

The touch panel of claim 1, wherein the plurality of mesh lines comprise the first outermost mesh line and the second outermost mesh line that are spaced apart from each other, wherein the first outermost mesh line is disposed across the first contact hole and the second contact hole.

### Claim 8 (depends on 2)

The touch panel of claim 2, wherein the plurality of mesh lines comprise the first outermost mesh line and the second outermost mesh line that are spaced apart from each other, wherein the first outermost mesh line is disposed across the first contact hole and the second contact hole.

### Claim 9

The touch panel of 6, wherein the first outermost mesh line and the second outermost mesh line are spaced apart from each other by a second distance at a point closer to the first contact hole than to the intermediate point between the first contact hole and the second contact hole,
wherein the second distance is less than the maximum distance.

### Claim 10 (depends on 2)

The touch panel of claim 2, wherein at least a portion of the first transparent electrode is aligned on a same layer with at least a portion of the second transparent electrode.

### Claim 11 (depends on 2)

The touch panel of claim 2, further comprising a protective layer formed on the first transparent electrode or the second transparent electrode.

### Claim 12 (depends on 2)

The touch panel of claim 2, further comprising an anti-reflective layer formed on at least one of the second surface of the substrate, the first transparent electrode, and the second transparent electrode.

### Claim 13 (depends on 1)

The touch panel of claim 1, wherein the second electrode connection part includes at least one selected from the group consisting of chrome (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), and alloys thereof.

### Claim 14 (depends on 2)

The touch panel of claim 2, wherein the second electrode connection part includes at least one selected from the group consisting of chrome (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), and alloys thereof.

### Claim 15 (depends on 6)

The touch panel of claim 6, wherein the maximum distance between the first outermost mesh line and the second outermost mesh line is greater than a length of the first electrode connection part.

### Claim 16 (depends on 1)

The touch panel of claim 1, wherein one end of the first outermost mesh line is adjacent to the first contact hole, and the other end of the first outermost mesh line is adjacent to the second contact hole; wherein a first portion of the first outermost mesh line across the first contact hole and a second portion of the first outermost mesh line across the second contact hole extend in different directions from each other.

### Claim 17 (depends on 2)

The touch panel of claim 2, wherein one end of the first outermost mesh line is adjacent to the first contact hole, and the other end of the first outermost mesh line is adjacent to the second contact hole; wherein a first portion of the first outermost mesh line across the first contact hole and a second portion of the first outermost mesh line across the second contact hole extend in different directions from each other.

### Claim 18 (depends on 1)

The touch panel of claim 1, wherein one end of the second outermost mesh line is adjacent to the first contact hole, and the other end of the second outermost mesh line is adjacent to the second contact hole; wherein a first portion of the second outermost mesh line across the first contact hole and a second portion of the second outermost mesh line across the second contact hole extend in different directions from each other.

### Claim 19 (depends on 2)

The touch panel of claim 2, wherein one end of the second outermost mesh line is adjacent to the first contact hole, and the other end of the second outermost mesh line is adjacent to the second contact hole; wherein a first portion of the second outermost mesh line across the first contact hole and a second portion of the second outermost mesh line across the second contact hole extend in different directions from each other.

### Claim 20 (depends on 2)

The touch panel of claim 2, wherein an OCA (optically clear adhesive) is disposed between the substrate and the transparent electrode base.