Touch sensor integrated type display device

• US 10,101,832 B2
• Filed: 11/19/2014
• Issued: 10/16/2018
• Est. Priority Date: 12/26/2013
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Han, Manhyeop, Kim, Cheolse
• Primary Examiner(s): Yeung, Matthew
• Application Number:
  US14/547,783
• Publication Number:
  US 20150185938A1
• Time in Patent Office: 1,427 Days
• Field of Search: None
• CPC Class Codes: 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
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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

Abstract

A touch sensor integrated type display device includes a plurality of first areas where a plurality of first electrodes are respectively located; and a plurality of second areas where a plurality of second electrodes and a plurality of third electrodes are arranged alternately in a first direction so as to avoid contact with each other. The plurality of first electrodes located in the plurality of first areas are connected to each other in the first direction, the plurality of second electrodes located in the plurality of second areas are connected to each other in the first direction, and the plurality of third electrodes located in the plurality of second areas are arranged in a second direction crossing the first direction.

Claims

1. A touch sensor integrated type display device comprising:

a plurality of first areas including a plurality of first rows of touch driving electrodes, each first row including a plurality of touch driving electrodes; and

a plurality of second areas including;

a plurality of second rows of touch non-sensing electrodes, each second row including a plurality of touch non-sensing electrodes, and

a plurality of touch sensing electrodes,

wherein the plurality of second rows and the plurality of touch sensing electrodes are arranged alternately in a first direction so as to avoid contact with each other, the first areas and the second areas being arranged in a second direction different from the first direction, wherein at least one second area of the plurality of second areas is between and adjacent to at least two first areas of the plurality of first areas;

wherein at least one touch sensing electrode of the plurality of touch sensing electrodes is between and adjacent to at least two second rows of touch non-sensing electrodes of the plurality of touch non-sensing electrodes,

wherein at least one second row of touch non-sensing electrodes of the plurality of second rows of touch non-sensing electrodes is between and adjacent to at least two touch sensing electrodes of the plurality of touch sensing electrodes, and

wherein the plurality of touch driving electrodes located in the plurality of first areas are connected to each other in the first direction, the plurality of touch non-sensing electrodes located in the plurality of second areas are connected to each other in the first direction, and the plurality of touch sensing electrodes located in the plurality of second areas are connected to each other in the second direction crossing the first direction.

2. The touch sensor integrated type display device of claim 1, wherein the plurality of first areas and the plurality of second areas are of a same size.

3. The touch sensor integrated type display device of claim 2, wherein the touch driving electrodes located in at least the two first areas are connected to a touch routing wire, and the plurality of touch non-sensing electrodes located in the plurality of second areas are connected to each other and grounded.

4. The touch sensor integrated type display device of claim 3, wherein the plurality of touch driving electrodes located in the plurality of first areas are connected to each other via a plurality of first connecting wires which are arranged to be in contact with the plurality of touch driving electrodes, and the plurality of touch non-sensing electrodes located in the plurality of second areas are connected to each other via a plurality of second connecting wires which are arranged to be in contact with the plurality of touch non-sensing electrodes.

5. The touch sensor integrated type display device of claim 4, wherein the plurality of touch sensing electrodes located in the plurality of second areas are connected to each other to form at least two electrically separated groups via a plurality of third connecting wires which are arranged to be in contact with the plurality of touch sensing electrodes, and the plurality of third connecting wires are arranged to cross the plurality of first and second connecting wires.

6. The touch sensor integrated type display device of claim 1, wherein the plurality of first areas and the plurality of second areas are arranged alternately, and the plurality of first areas are larger in size that the plurality of second areas.

7. The touch sensor integrated type display device of claim 6, wherein the plurality of touch driving electrodes located in the plurality of first areas are connected to a touch routing wire, and the plurality of touch non-sensing electrodes located in the plurality of second areas are grounded.

8. The touch sensor integrated type display device of claim 7, wherein a plurality of first connecting wires connected to the plurality of touch driving electrodes located in the plurality of first areas which are located between the plurality of second areas are connected to each other via a fourth connecting wire, and a plurality of second connecting wires connected to the plurality of touch non-sensing electrodes located in the plurality of second areas are connected to each other via a fifth connecting wire.

9. The touch sensor integrated type display device of claim 8, wherein a plurality of third connecting wires connected to the plurality of touch sensing electrodes located in the plurality of second areas are connected to each other to form at least two electrically separated groups via a sixth connecting wire, and the sixth connecting wire is arranged to cross the fourth and fifth connecting wires.

10. The touch sensor integrated type display device of claim 1, wherein the plurality of touch driving electrodes also serve as common electrodes, and the plurality of touch non-sensing electrodes also serve as common electrodes.

11. The touch sensor integrated type display device of claim 1, further comprising at least one unit pixel electrode that overlaps each of the plurality of first and touch non-sensing electrodes, the unit pixel electrode including a plurality of subpixel electrodes for representing colors.

12. The touch sensor integrated type display device of claim 1, wherein:

the plurality of touch driving electrodes function as either touch driving electrodes or common electrodes;

the plurality of touch non-sensing electrodes function as either non-sense electrodes or common electrodes; and

the plurality of touch sensing electrodes function as sense electrodes.

13. The touch sensor of claim 1, wherein at least two first areas of the plurality of first areas are adjacent to each other along the second direction.

14. The touch sensor of claim 1, wherein at least one first area of the plurality of first areas is in between and adjacent to another first area of the plurality of first areas and one second area of the plurality of second areas along the second direction.

15. The touch sensor of claim 1, wherein the plurality of touch driving electrodes are same as the plurality of touch non-sensing electrodes and different from the plurality of touch sensing electrodes in their shapes.

16. The touch sensor of claim 1, further including:

a first electrostatic discharge circuit coupled to the plurality of touch driving electrodes; and

a second electrostatic discharge circuit coupled to the plurality of touch sensing electrodes.

17. The touch sensor of claim 1, wherein the plurality of touch driving electrodes located in the plurality of first areas are connected to each other via a plurality of touch driving connecting wires which are arranged to be in contact with the plurality of touch driving electrodes, the plurality of touch non-sensing electrodes are connected to each other via a plurality of touch non-sensing connecting wires which are arranged to be in contact with the plurality of touch non-sensing electrodes, and the plurality of touch sensing electrodes are connected to each other via a plurality of touch sensing connecting wires which are arranged to be in contact with the plurality of touch sensing electrodes, and

wherein the touch non-sensing connecting wire is disposed to pass through a bottleneck portion of the touch sensing electrodes which is narrow in width.