Electrode pattern of touch panel and forming method for the same

Patent metadata

Field	Value
Publication number	US-9703424-B2
Application number	US-201213711210-A
Country	US
Kind code	B2
Filing date	Dec 11, 2012
Priority date	Dec 16, 2011
Publication date	Jul 11, 2017
Grant date	Jul 11, 2017

Abstract

The present invention relates to an electrode pattern of a touch panel and a forming method of the electrode pattern of a touch panel. The electrode pattern of a touch panel according to the present invention includes a plurality of electrode pattern cells which are arranged on a substrate in a space, a dielectric layer formed on the electrode pattern cell, and a bridge electrode which is formed on the dielectric layer by using conductive material of black color and connects the electrode pattern cells.

First claim

What is claimed is:

1. A forming method of an electrode pattern of a touch panel, comprising:
forming a plurality of electrode pattern cells on a substrate;
forming a dielectric layer on the electrode pattern cells; and
forming a bridge electrode connecting the electrode pattern cells on the dielectric layer using a conductive material of a black color;
wherein the bridge electrode is formed with a metal oxide, metal nitride, or metal fluoride as a blackened metal material;
wherein the metal material is one of Al, Au, Ag, Sn, Cr, Ni, Ti, and Mg;
wherein the bridge electrode is formed as a plurality of layers formed by using a plurality of conductive materials;
wherein among the plurality of layers of the bridge electrode, a lower layer is formed with a conductive material of a first black color and an upper layer is formed with a conductive material of a second black color; and
wherein a width of the lower layer corresponds to a width of the upper layer.

2. The forming method of an electrode pattern of a touch panel of claim 1 , wherein the bridge electrode is blackened, corresponding to the luminosity of the substrate, the electrode pattern cell or the dielectric layer.

3. The forming method of an electrode pattern of a touch panel of claim 1 , wherein the bridge electrode is formed with carbon nanotubes.

4. The forming method of an electrode pattern of a touch panel of claim 1 , wherein the plurality of the electrode pattern cells are configured by forming first electrode pattern cells on the substrate, which are arranged in a first axial direction wherein the first electrode pattern cells are connected to each other through a conductive lead in the first axial direction, and forming a plurality of second electrode pattern cells arranged in a second axial direction perpendicular to the first axial direction.

5. The forming method of an electrode pattern of a touch panel of claim 4 , wherein the dielectric layer is arranged over the conductive lead connection the first electrode pattern cells through an off-set or ink-jet process, and the second electrode pattern cell.

6. An electrode pattern of a touch panel, comprising:
electrode pattern cells on a substrate;
a dielectric layer on the electrode pattern cells; and
a bridge electrode comprising a conductive material of a black color and connecting the electrode pattern cells at the dielectric layer;
wherein the bridge electrode is formed with a metal oxide, metal nitride, or metal fluoride as a blackened metal material;
wherein the metal material is one of Al, Au, Ag, Sn, Cr, Ni, Ti, and Mg;
wherein the bridge electrode is formed as a plurality of layers by using a plurality of conductive materials;
wherein among the plurality of layers of the bridge electrode, a lower layer is formed with a conductive material of a first black color and an upper layer is formed with a conductive material of a second black color; and
wherein a width of the lower layer corresponds to a width of the upper layer.

7. The electrode pattern of a touch panel of claim 6 , wherein the bridge electrode is blackened, corresponding to the luminosity of the substrate, the electrode pattern cell or the dielectric layer.

8. The electrode pattern of a touch panel of claim 6 , wherein the bridge electrode is formed with Carbon Nano Tube.

9. The electrode pattern of a touch panel of claim 6 , wherein the electrode pattern cells comprise a plurality of first electrode pattern cells on the substrate that are arranged in a first axial direction, wherein the first electrode pattern cells are connected to each other through a conductive lead in the first axial direction; and a plurality of second electrode pattern cells arranged in a second axial direction perpendicular to the first axial direction.

10. The electrode pattern of a touch panel of claim 9 , wherein the first conductive electrode pattern cells and the second electrode pattern cells are insulated by the dielectric layer.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Byung Soo
• Hong Hyuk Jin
• Koo Chan Kyu

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• B82Y15/00

  Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors · CPC title

• G06F2203/04103

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

• G06F2203/04111

  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 · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title