Touch sensor integrated type display device

• US 9,904,387 B2
• Filed: 07/24/2014
• Issued: 02/27/2018
• Est. Priority Date: 07/24/2013
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Kim, Taehwan
• Primary Examiner(s): Chatly, Amit
• Application Number:
  US14/340,228
• Publication Number:
  US 20150029116A1
• Time in Patent Office: 1,314 Days
• Field of Search: 345173-174
• 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

Abstract

A touch sensor integrated type display device is discussed. The display device has an active area, and a bezel area disposed at outside of the active area and including a gate driving circuit, the display device comprising a plurality of first electrodes each having the same size, and arranged in the active area in a first direction and a second direction which cross each other; and a plurality of second electrodes arranged in the active area in the second direction and alternately disposed between immediately adjacent pairs of the plurality of first electrodes arranged along the second direction, wherein the plurality of first electrodes include a plurality of first outer electrodes that are disposed at an outermost area of the active area, and at least one of the plurality of first outer electrodes has a portion that is extended into the bezel area.

Claims

1. A touch sensor integrated type display device having an active area displaying data, and a bezel area disposed at outside of the active area and including a gate in panel (GIP) type gate driving circuit, the display device comprising:

a plurality of first electrodes each having a first size, and arranged in the active area in a first direction and a second direction which cross each other, the plurality of first electrodes being separated from each other; and

a plurality of second electrodes arranged in the active area in the second direction and alternately disposed between immediately adjacent pairs of the plurality of first electrodes arranged along the second direction,

wherein the plurality of first electrodes include a plurality of first outer electrodes that are disposed at an outermost area of the active area, and each of the plurality of first outer electrodes has a portion that is extended into the bezel area,

wherein each of the plurality of first outer electrodes disposed at edges of the active area has a second size in the active area, and each of the plurality of first outer electrodes disposed at corners of the active area has a third size in the active area,

wherein the third size is smaller than the second size which is smaller than the first size,

wherein portions of the plurality of first outer electrodes extended into the bezel area are overlapped with the GIP type gate driving circuit in the bezel area,

wherein the plurality of first and second electrodes are disposed on a same layer, operated as a common electrode in a display mode for displaying the data and operated as touch electrodes in a touch mode for perceiving touch positions, and

wherein a routing wire connected to any one of the first electrodes in the bezel area is overlapped with a source/drain electrode of the GIP type gate driving circuit.

2. The display device of claim 1, wherein at least one of the plurality of second electrodes has a portion that is extended into the bezel area.

3. The display device of claim 2, wherein the plurality of first outer electrodes include a plurality of first corner electrodes disposed at corner areas of the active area, and each of the plurality of first corner electrodes has portions that are extended into the bezel area along the first and second directions, and

each of the plurality of second electrodes has a portion that is extended into the bezel area along the second direction.

4. The display device of claim 3, wherein the plurality of first outer electrodes include a plurality of first edge electrodes disposed at upper and lower edge areas of the active area, and each of the plurality of first edge electrodes has a portion that is extended into the bezel area along the second direction, and

the plurality of first outer electrodes include a plurality of second edge electrodes disposed at left and right edge areas of the active area, and each of the plurality of second edge electrodes has a portion that is extended into the bezel area along the first direction.

5. The display device of claim 3, further comprising:

a plurality of first sub-routing wires respectively connected to a plurality of first touch electrodes, and arranged in the second direction to be extended into the bezel area;

first connection wires respectively connected to the plurality of sub-routing wires in the bezel area to form a plurality of first electrode serials extending in the first direction; and

a plurality of second sub-routing wires respectively connected to the plurality of second electrodes in the bezel area.

12. The display device of claim 1, wherein the routing wire in the bezel area is connected to a transparent electrode above the source/drain electrode.

6. A touch sensor integrated type display device having an active area displaying data and a bezel area disposed at outside of the active area and including a gate in panel (GIP) type gate driving circuit, the display device comprising:

a plurality of first electrodes each having a first size, and arranged in the active area in a first direction and a second direction which cross each other, the plurality of first electrodes being separated from each other;

a plurality of second electrodes arranged in the active area in the second direction and alternately disposed between immediately adjacent pairs of the plurality of first electrodes arranged along the second direction; and

at least one third electrode disposed at the bezel area, and arranged along one side of the active area, wherein each of the at least one third electrode disposed at edges of the active area has a second size in the active area, and each of the at least one third electrode disposed at corners of the active area has a third size in the active area,

wherein the third size is smaller than the second size which is smaller than the first size,

wherein the at least one third electrode is overlapped with the GIP type gate driving circuit in the bezel area,

wherein the plurality of first and second electrodes are disposed on a same layer, operated as a common electrode in a display mode for displaying the data and operated as touch electrodes in a touch mode for perceiving touch positions, and

wherein a resistance reducing wire connected to any one of the first electrodes in the bezel area is overlapped with a source/drain electrode of the GIP type gate driving circuit.

7. The display device of claim 6, wherein the first electrodes disposed at upper and lower edge areas of the active area among the plurality of first electrodes are extended into the bezel area along the second direction, and

each of the plurality of second electrodes is extended into the bezel area along the second direction.

8. The display device of claim 7, further comprising:

at least one resistance reducing wire connected to the at least one third electrode to reduce a resistance of the at least one third electrode.

9. The display device of claim 8, wherein the at least one resistance reducing wire is formed on a transparent electrode of the GIP type gate driving circuit, and the at least one third electrode is connected to the at least one resistance reducing wire via a contact hole formed in a passivation layer covering the transparent electrode and the at least one resistance reducing wire.

13. The display device of claim 6, wherein the resistance reducing wire is connected to a transparent electrode above the source/drain electrode.

10. A touch sensor integrated type display device having an active area displaying data and a bezel area, the bezel area being disposed on peripheries of the active area, the display device comprising:

a plurality of first electrodes each having a first size, and arranged in a first direction and a second direction which cross each other, the plurality of first electrodes being separated from each other;

a plurality of second electrodes arranged in the active area in the second direction and alternately disposed between immediately adjacent pairs of the plurality of first electrodes arranged along the second direction; and

a gate in panel (GIP) type gate driving circuit;

wherein the plurality of the first electrodes and the plurality of second electrodes are arranged to define a rectangular configuration of the active area, and the bezel area is disposed at the periphery of the active area,

wherein the plurality of first electrodes include a plurality of first outer electrodes that are disposed at an outermost area of the active area, and the plurality of first outer electrodes each has a portion that is extended into the bezel area,

wherein each of the plurality of first outer electrodes disposed at edges of the active area has a second size in the active area, and each of the plurality of first outer electrodes disposed at corners of the active area has a third size in the active area,

wherein the third size is smaller than the second size which is smaller than the first size,

wherein the plurality of second electrodes each has opposite ends that are extended into the bezel area,

wherein the GIP type gate driving circuit is entirely disposed in the bezel area, and at least one of the plurality of first outer electrodes and a plurality of second edge electrodes disposed at edge areas of the active area are overlapped with the GIP type gate driving circuit in the bezel area,

wherein the plurality of first and second electrodes are disposed on a same layer, operated as a common electrode in a display mode for displaying the data and operated as touch electrodes in a touch mode for perceiving touch positions, and

wherein a routing wire connected to the at least one of the plurality of first outer electrodes and the plurality of second edge electrodes disposed at edge areas of the active area is overlapped with a source/drain electrode of the GIP type gate driving circuit.

11. The display device of claim 10, wherein portions of the at least one of the plurality of first outer electrodes and the plurality of second edge electrodes that extend into the bezel area are overlapped with the GIP type gate driving circuit.

14. The display device of claim 10, wherein the routing wire in the bezel area is connected to a transparent electrode above the source/drain electrode.