TOUCH SENSOR INTEGRATED TYPE DISPLAY DEVICE

• US 20150084888A1
• Filed: 08/12/2014
• Published: 03/26/2015
• Est. Priority Date: 09/23/2013
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: HAN, Manhyeop, KIM, Juhan
• Granted Patent: US 9,626,027 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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

Provided is a touch sensor integrated type display device. The device includes: an active area (AA), a bezel area (BA) outside the AA, the BA including: a data driving integrated circuit (IC), a flexible printed circuit (FPC) board, a gate driving IC, and gate line-on-glass (LOG) wires between the FPC board and the gate driving IC, first electrodes in the AA and crossing in first and second directions, second electrodes in the AA, arranged in the second direction and alternately disposed with the first electrodes along the first direction, grouping wires in the BA in parallel between the AA and the data driving IC, having different lengths, such that the grouping wires are non-overlapped with the gate LOG wires, and first sub-routing wires connecting the first electrodes, corresponding to one line in the first direction, to each of the grouping wires.

Claims

1. A touch sensor integrated type display device comprising:

an active area;

a bezel area outside the active area, the bezel area comprising;

a gate driving IC;

a flexible printed circuit board;

a data driving integrated circuit (IC); and

gate line-on-glass (LOG) wires between the flexible printed circuit board and the gate driving IC;

a plurality of first electrodes in the active area and arranged in first and second directions crossing each other;

a plurality of second electrodes in the active area, and arranged in the second direction and alternately disposed with the plurality of first electrodes arranged along the first direction;

a plurality of grouping wires in the bezel area between the active area and the data driving IC and arranged in parallel to each other, length of at least one of the plurality of grouping wires being different from that of remained grouping wires, such that the plurality of grouping wires are non-overlapped with the gate LOG wires; and

a plurality of first sub-routing wires connecting the first electrodes, corresponding to one line arranged in the first direction among the plurality of first electrodes, to each of the plurality of grouping wires.

2. The display device of claim 1, wherein:

at a first side of the plurality of grouping wires adjacent to the gate LOG wires, an end of each of the plurality of grouping wires further from the active area than a first of the plurality of grouping wires closest to the active area extends successively less in the second direction toward the gate driving IC than a adjacent grouping wire closer to the active area, and

at a second side of the plurality of grouping wires opposite to the gate LOG wires, all of the plurality of grouping wires end at a same distance in the second direction away from the gate driving IC.

3. The display device of claim 2, wherein a difference in length between adjacent pairs of grouping wires is the same.

4. The display device of claim 2, wherein first sub-routing wires are symmetrical to second sub-routing wires in a mirror image, the first sub-routing wires connecting to first electrodes corresponding to a first line of the first electrodes arranged in the second direction closest to the gate driving IC along the first direction, the second sub-routing wires connecting to second electrodes corresponding to a last line of the first electrodes arranged in the second direction along the first direction.

5. The display device of claim 1, wherein at least one of the gate LOG wires comprises a double-layer construction, comprising:

a first metal layer on a thin film transistor substrate; and

a second metal layer on a gate insulation layer covering the first metal layer.

6. The display device of claim 5, wherein each of the plurality of grouping wires is on the insulation layer and is spaced apart from the at least one of the gate LOG wires.

7. The display device of claim 1, further comprising a shielding electrode disposed between the first electrodes arranged in the second direction and the second electrode arranged in the second direction.

8. The display device of claim 7, further comprising a shielding wire surrounding the active area.

9. The display device of claim 8, wherein the shielding wire is on a thin film transistor substrate and crosses the first sub-routing wires.

10. The display device of claim 8, wherein the shielding electrode is connected to the shielding wire.

11. The display device of claim 10, further comprising a shielding connection wire connecting the shielding wire to flexible printed circuit board.