Touch screen panel

• US 9,335,881 B2
• Filed: 07/30/2013
• Issued: 05/10/2016
• Est. Priority Date: 07/30/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jeong, Hwan-Hee
• Primary Examiner(s): Mercedes, Dismery
• Application Number:
  US13/954,827
• Publication Number:
  US 20140028599A1
• Time in Patent Office: 1,015 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

Disclosed here is a touch screen panel capable of implementing a double routing structure without increasing the number of pads of a pad part by implementing some sensing lines of first and second sensing lines that are electrically coupled to first and second sensing cells arranged on a display region, in the double routing structure, and electrically coupling the sensing lines implemented in the double routing structure to the pads of the pad part through connection patterns.

Claims

1. A touch screen panel comprising:

sensing patterns formed on a display region of a transparent substrate and comprising first sensing cells arranged in a first direction and second sensing cells arranged in a second direction so as not to be overlapped with the first sensing cells;

first and second sensing lines formed in a non-display region of the transparent substrate outside of the display region, each of the first sensing lines being coupled to corresponding one or more of the first sensing cells and each of the second sensing lines being coupled to corresponding one or more of the second sensing cells; and

a pad part comprising a plurality of pads coupled to the first and second sensing lines, respectively,

wherein at least one of the first or second sensing lines are implemented in a double routing structure such that each of the first sensing lines and/or the second sensing lines is directly connected to two serially coupled first sensing cells and/or second sensing cells at opposite ends of the display region, and

wherein the sensing lines implemented in the double routing structure are electrically coupled to the pads of the pad part through connection patterns, the connection patterns being on a different layer from that of which the sensing lines implemented in the double routing structure are located, and each of the connection patterns having one end connected to a corresponding sensing line that is connected to the two serially coupled sensing cells, and another end connected to the pad part.

2. The touch screen panel according to claim 1, wherein each of the sensing lines implemented in the double routing structure is coupled to the corresponding sensing cells arranged in the same column in the first direction or the same row in the second direction at two distal ends of the display region.

3. The touch screen panel according to claim 1, wherein the second sensing lines are implemented in the double routing structure.

4. The touch screen panel according to claim 3, wherein each of the second sensing lines coupled to sensing cells positioned at two distal ends of the display region among the second sensing cells arranged in the same row in the second direction, forms a closed loop with the sensing cells.

5. The touch screen panel according to claim 1, wherein the first and second sensing cells comprise a transparent conductive material.

6. The touch screen panel according to claim 1, wherein the first and second sensing lines comprise a metal material having low resistance.

7. The touch screen panel according to claim 1, wherein the connection patterns are formed on a layer different from a layer on which the first and second sensing lines are formed.

8. The touch screen panel according to claim 7, wherein the connection patterns comprise the same material as that of the first and second sensing cells.

9. The touch screen panel according to claim 8, wherein one side of the connection patterns is positioned on an insulation layer formed on the second sensing lines, and the connection patterns are electrically coupled to the second sensing lines through contact holes formed in the insulation layer at a region overlapped with the second sensing lines corresponding thereto.

10. The touch screen panel according to claim 9, wherein another side of the connection patterns is positioned on the insulation layer formed on the pads, and the connection patterns are electrically coupled to the pads through contact holes formed in the insulation layer of a region overlapped with the pads corresponding thereto.

11. The touch screen panel according to claim 7, wherein the connection patterns are integrally formed with the plurality of pads of the pad part.

12. The touch screen panel according to claim 11, wherein one side of the connection patterns is positioned on an insulation layer formed on the first and second sensing lines, and the connection patterns are electrically coupled to the first and second sensing lines through contact holes formed in the insulation layer of a region overlapped with the first and second sensing lines corresponding thereto, respectively.

13. The touch screen panel according to claim 1, wherein the sensing patterns further comprise:

first connection lines, each of the first connection lines coupling the first sensing cells adjacent to each other in the first direction to each other; and

second connection lines, each of the second connection lines coupling the second sensing cells adjacent to each other in the second direction to each other.

14. The touch screen panel according to claim 13, wherein an insulation layer is interposed at a crossing portion between the first and second connection lines.