TOUCH SENSOR INTEGRATED TYPE DISPLAY DEVICE

• US 20150185938A1
• Filed: 11/19/2014
• Published: 07/02/2015
• 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
• Granted Patent: US 10,101,832 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 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,

wherein 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.

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 two first areas are located between the plurality of first areas, the first electrodes located in the two first areas are connected to a touch routing wire, and the plurality of second 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 first 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 first electrodes, and the plurality of second 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 second electrodes.

5. The touch sensor integrated type display device of claim 4, wherein the plurality of third 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 third 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 first electrodes located in the plurality of first areas are connected to a touch routing wire, and the plurality of second 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 first 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 second 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 third 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 first electrodes are touch driving electrodes also serving as common electrodes, the plurality of second electrodes are touch non-sensing electrodes also serving as common electrodes, and the plurality of third electrodes are touch sensing electrodes.

11. The touch sensor integrated type display device of claim 1, wherein the plurality of first electrodes are touch sensing electrodes also serving as common electrodes, the plurality of second electrodes are touch non-driving electrodes also serving as common electrodes, and the plurality of third electrodes are touch driving electrodes.

12. 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 second electrodes, the unit pixel electrode including a plurality of subpixel electrodes for representing colors.