Touch substrate, method of manufacturing the same and display device having the same

Patent metadata

Field	Value
Publication number	US-9239651-B2
Application number	US-90065810-A
Country	US
Kind code	B2
Filing date	Oct 8, 2010
Priority date	Oct 23, 2009
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A touch substrate includes a base substrate, a common electrode and a wire electrode. The base substrate has a plurality of common electrode areas. A common electrode is disposed in each of the common electrode areas. The common electrode has a plurality of first electrode lines extended in a first direction and arranged in a second direction crossing the first direction and a plurality of second electrode lines arranged in the first direction. The wire electrode is connected to an end of the common electrode to apply a voltage to the common electrode. The common electrode and the wire electrode are simultaneously formed through a same process using a printing substrate.

First claim

What is claimed is:

1. A touch substrate comprising:
a base substrate having a plurality of common electrode areas;
a common electrode disposed in each of the common electrode areas, the common electrode comprising a plurality of first electrode lines extended lengthwise in a first direction and arranged in a second direction different from the first direction and a plurality of second electrode lines arranged in the first direction; and
a wire electrode connected to an end of the common electrode to apply a voltage to the common electrode,
wherein the first electrode lines and the second electrode lines cross each other to define a transmission area transmitting light, and
wherein the common electrode and the wire electrode are disposed in the same layer, and
wherein a side surface of the common electrode is electrically connected to a side surface of the wire electrode.

2. The touch substrate of claim 1 , wherein the common electrode comprises the same material as the wire electrode, and
a thickness of the common electrode is less than a thickness of the wire electrode.

3. The touch substrate of claim 1 , wherein the common electrode comprises a first metal material and the wire electrode comprises a second metal material having a smaller resistance than the first material, and
a thickness of the common electrode is substantially equal to a thickness of the wire electrode.

4. The touch substrate of claim 1 , wherein the second electrode lines connect adjacent first electrode lines.

5. The touch substrate of claim 1 , wherein each of the second electrode lines is not connected to the second electrode lines adjacent in the second direction.

6. The touch substrate of claim 1 , wherein each of the second electrode lines is bent and connects two first electrode lines, and
the second electrode lines adjacent to each other in the first direction are connected to two first electrode lines that are adjacent to each other in the second direction.

7. A display device comprising:
a touch panel comprising:
a base substrate having a plurality of common electrode areas;
a common electrode comprising a plurality of first electrode lines extended lengthwise in a first direction and arranged in a second direction different from the first direction and a plurality of second electrode lines arranged in the first direction; and
a wire electrode connected to an end of the common electrode to apply a voltage to the common electrode; and

a display panel displaying an image in accordance with an input signal inputted from the touch panel,
wherein the first electrode lines and the second electrode lines cross each other to define a transmission area transmitting light, and
wherein the common electrode and the wire electrode are disposed in the same layer, and
wherein a side surface of the common electrode is electrically connected to a side surface of the wire electrode.

8. The display device of claim 7 , wherein a gate line is extended in a third direction different from the first and second directions, and a data line is extended in a fourth direction substantially perpendicular to the third direction.

9. The display device of claim 7 , wherein a thickness of the common electrode is substantially smaller than a thickness of the wire electrode.

10. The display device of claim 7 , wherein a thickness of the common electrode and a thickness of the wire electrode are substantially equal to each other, and
the common electrode and the wire electrode are formed from different materials from each other.

11. The display device of claim 7 , wherein the second electrode lines connect adjacent first electrode lines.

12. The display device of claim 7 , wherein each of the second electrode lines is bent and connects two first electrode lines, and
the second electrode lines adjacent to each other in the first direction are connected to two first electrode lines that are adjacent to each other in the second direction.

Assignees

• Kim Kyu-Young
• Kim Bo-Sung
• Lee Youn-Gu
• Jung Nam-Ok
• Samsung Display Co Ltd

Inventors

• Kim Kyu-Young
• Kim Bo-Sung
• Lee Youn-Gu
• Jung Nam-Ok

Classifications

• H05K3/1275

  by other printing techniques, e.g. letterpress printing, intaglio printing, lithographic printing, offset printing · 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

• G06F3/045

  using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact · CPC title

• G06F3/044 Primary

  by capacitive means · 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