Electrode pattern of touch panel

Patent metadata

Field	Value
Publication number	US-9941877-B2
Application number	US-201214365452-A
Country	US
Kind code	B2
Filing date	Dec 11, 2012
Priority date	Dec 19, 2011
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

Provided is an electrode pattern of a touch panel, including: a plurality of conductive pattern cells which are formed to be spaced apart from each other on a substrate; and an insulating layer which is formed on the conductive pattern cells; and a plurality of metal bridge line electrodes which are formed on the insulating layer so that the conductive pattern cells are connected to each other.

First claim

The invention claimed is:

1. A touch panel, comprising:
a substrate;
a first conductive pattern in a first-axis direction including a plurality of first conductive pattern cells disposed on the substrate;
a second conductive pattern in a second-axis direction including a plurality of second conductive pattern cells disposed on the substrate;
an insulating layer disposed on the substrate;
a plurality of metal bridges disposed on a one surface of the insulating layer so that the second conductive pattern cells are connected to each other; and
a conductive lead disposed on another surface of the insulating layer;
wherein adjacent first conductive pattern cells of the plurality of first conductive pattern cells are connected to each other by the conductive lead,
wherein the plurality of metal bridges comprise two or more metal bridges,
wherein the plurality of metal bridges are disposed to be in parallel to each other,
wherein a sum of widths of the plurality of metal bridges is smaller than half of a width of the insulating layer,
wherein the first conductive pattern cells, the second conductive pattern cells, and the conductive lead each comprises Indium Tin Oxide;
wherein a length of one metal bridge of the plurality of metal bridges in the second-axis direction is longer than a length of the insulating layer in the second-axis direction,
wherein the length of the metal bridge in the second-axis direction is shorter than a length of each first conductive pattern cell in the second-axis direction,
wherein a width of an ending portion of each first conductive pattern cell in the second-axis direction connected with the conductive lead is smaller than a width of a central portion of the same first conductive pattern cell in the second-axis direction,
wherein a width of an ending portion of each second conductive pattern cell in the first-axis direction connected with a corresponding metal bridge is smaller than a width of a central portion of the same second conductive pattern cell in the first-axis direction,
wherein a width of the insulation layer in the first-axis direction is smaller than a width of the insulation layer in the second-axis direction,
wherein the first conductive pattern, the second conductive pattern, and the conductive lead each includes a same first conductive material;
wherein the plurality of metal bridges include a second conductive material,
wherein the first conductive material and the second conductive material are different from each other,
wherein each metal bridge is in direct physical contact with a top surface of the second conductive pattern,
wherein a width of each metal bridge is smaller than a width of the conductive lead,
wherein a distance between adjacent metal bridges of the plurality of metal bridges is greater than a width of each of the metal bridges, and
wherein a sum of widths of the plurality of metal bridges is smaller than a width of the conductive lead.

2. The touch panel of claim 1 , wherein the insulating layer is disposed on the conductive lead which is disposed on the substrate.

3. The touch panel of claim 1 , wherein the insulating layer is disposed on the second conductive pattern cells which are disposed on the substrate.

4. The touch panel of claim 1 , wherein the insulating layer is disposed on the conductive lead and the second conductive pattern cells are disposed on the substrate.

5. The touch panel of claim 1 , wherein the metal bridges are disposed on the conductive lead which is disposed on the substrate.

6. The touch panel of claim 1 , wherein the plurality of metal bridges are formed on a same plane and in a slit-like shape to face each other.

7. The touch panel of claim 1 , wherein the plurality of metal bridges have line electrodes.

8. The touch panel of claim 1 , wherein the metal bridges are formed in a shape of a pair of thin metal bridge lines facing each other.

9. The touch panel of claim 1 , wherein a length of the insulating layer in the second-axis direction is longer than a length of the conductive lead in the first-axis direction.

10. The touch panel of claim 9 , wherein the insulating layer is in direct contact with a top surface of the conductive lead and a top surface of the second conductive pattern cell.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Jong Sun
• Lee Dong Keon
• Koo Chan Kyu

Classifications

• H03K2017/9613

  using two electrodes per touch switch · CPC title

• H03K17/962 Primary

  Capacitive touch switches · CPC title

• G06F1/1692

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

• H03K2217/960755

  Constructional details of capacitive touch and proximity switches · CPC title

• G06F3/044

  by capacitive means · CPC title