Display device

1. A display device comprising:

a display panel comprising an insulation layer, first pads arranged with each other in a first direction and exposed from the insulation layer, and second pads arranged with each other in the first direction and exposed from the insulation layer;

a first connection circuit board comprising a first external insulation layer and first output pads, the first output pads arranged with each other in the first direction, exposed from the first external insulation layer, and electrically connected to the first pads;

a second connection circuit board above the first connection circuit board and comprising a second external insulation layer and second output pads, the second output pads arranged with each other in the first direction, exposed from the second external insulation layer, and electrically connected to the second pads; and

a sealing member configured to seal a gap between the second connection circuit board and the insulation layer,

wherein the second pads are farther from an edge of the display panel than the first pads in a second direction crossing the first direction, and

a distance between a top surface of the insulation layer and a bottom surface of the second connection circuit board is substantially the same as that between the top surface of the insulation layer and a top surface of the first connection circuit board.

2. The display device of claim 1 , wherein

the first pad and the second pad have substantially the same thickness, and

the second output pad has a thickness that is substantially the same as a sum of a thickness of the first output pad and a thickness of the first connection circuit board.

3. The display device of claim 2 , wherein

the first output pad has a thickness of about 5 micrometers to about 10 micrometers, and

the second output pad has a thickness of about 40 micrometers to about 50 micrometers.

4. The display device of claim 1 , wherein

the first output pad and the second output pad have substantially the same thickness, and

the second pad has a thickness greater than that of the first pad.

5. The display device of claim 1 , wherein a sum of a thickness of the second output pad and a thickness of the second pad is substantially the same as a sum of a thickness of the first output pad, a thickness of the first pad, and a thickness of the first connection circuit board.

6. The display device of claim 1 , further comprising:

a first conductive adhesion member between the first pad and the first output pad to electrically connect the first pad to the first output pad; and

a second conductive adhesion member between the second pad and the second output pad to electrically connect the second pad to the second output pad.

7. The display device of claim 6 , wherein

the first pad and the second pad have substantially the same thickness,

the first output pad and the second output pad have substantially the same thickness, and

the second conductive adhesion member has a thickness greater than that of the first conductive adhesion member.

8. The display device of claim 6 , wherein

the first pad and the second pad have substantially the same thickness, and

a sum of a thickness of the second conductive adhesion member and a thickness of the second output pad is substantially the same as a sum of a thickness of the first conductive adhesion member, a thickness of the first output pad, and a thickness of the first connection circuit board.

9. The display device of claim 6 , wherein

the first output pad and the second output pad have the same thickness, and

a sum of a thickness of the second conductive adhesion member and a thickness of the second pad is substantially the same as a sum of a thickness of the first conductive adhesion member, a thickness of the first pad, and a thickness of the first connection circuit board.

10. The display device of claim 1 , wherein the sealing member covers an edge area of the first connection circuit board overlapping the display panel, and an edge area of the second connection circuit board overlapping the display panel.

11. The display device of claim 1 , wherein each of the first output pad and the second output pad comprises copper.

12. The display device of claim 1 , wherein

the first connection circuit board further comprises a first driving chip,

the second connection circuit board further comprises a second driving chip,

a portion of the first connection circuit board overlapping the first driving chip in the first direction has a width less than a portion of the first connection circuit board overlapping the first output pads in the first direction, and

a portion of the second connection circuit board overlapping the second driving chip in the first direction has a width less than a portion of the second connection circuit board overlapping the second output pads in the first direction.

13. A display device comprising:

a display panel comprising an insulation layer, first pads arranged with each other in a first direction and exposed from the insulation layer, and second pads arranged with each other in the first direction and exposed from the insulation layer;

a first connection circuit board comprising a first external insulation layer and first output pads, the first output pads arranged with each other in the first direction, exposed from the first external insulation layer, and electrically connected to the first pads;

a second connection circuit board above the first connection circuit board and comprising a second external insulation layer and second output pads, the second output pads arranged with each other in the first direction, exposed from the second external insulation layer, and electrically connected to the second pads; and

a sealing member configured to seal a gap between the insulation layer and each of the first connection circuit board and the second connection circuit board,

wherein the second pads are farther from an edge of the display panel than the first pads in a second direction crossing the first direction, and

a sum of a thickness of the second pad and a thickness of the second output pad is greater than a sum of a thickness of the first pad and a thickness of the first output pad.

14. The display device of claim 13 , wherein

the thickness of the first pad is substantially the same as that of the second pad, and

the thickness of the first output pad is greater than that of the second output pad.

15. The display device of claim 13 , wherein

the thickness of the first pad is greater than that of the second pad, and

the thickness of the first output pad is substantially the same as that of the second output pad.

16. The display device of claim 13 , wherein

the thickness of the first pad is greater than that of the second pad, and

the thickness of the first output pad is greater than that of the second output pad.

17. The display device of claim 13 , wherein the sum of the thickness of the first pad and the thickness of the first output pad is about 40 micrometers to about 50 micrometers greater than the sum of the thickness of the second pad and the thickness of the second output pad.

18. The display device of claim 13 , wherein the sealing member covers an edge area of the first connection circuit board overlapping the display panel and an edge area of the second connection circuit board overlapping the display panel.

19. The display device of claim 13 , wherein each of the first output pad and the second output pad comprises copper.

20. The display device of claim 13 , wherein

the first connection circuit board further comprises a first driving chip,

the second connection circuit board further comprises a second driving chip,

a portion of the first connection circuit board overlapping the first driving chip in the first direction has a width less than a portion of the first connection circuit board overlapping the first output pads in the first direction, and

a portion of the second connection circuit board overlapping the second driving chip in the first direction has a width less than a portion of the second connection circuit board overlapping the second output pads in the first direction.