Flexible organic light emitting display and method in an in-cell structure having a touch electrode array for manufacturing the same

1. An organic light emitting display comprising:

a first buffer layer and a second buffer layer, each having an active region and a dead region and facing each other;

a thin film transistor array including a thin film transistor in each of a plurality of pixels defined in a matrix form on the active region of the first buffer layer;

an organic light emitting diode connected to each thin film transistor at each pixel;

a touch electrode array formed on the active region of the second buffer layer;

a touch pad portion formed on a part of the dead region of the second buffer layer;

a dummy pad portion facing the touch pad portion on the dead region of the first buffer layer; and

a sealant including a plurality of conductive balls between the touch pad portion and the dummy pad portion,

wherein a distance between the outermost surface of the touch pad portion and the outermost surface of the dummy pad portion is smaller than a distance between outermost surfaces of neighboring portions adjacent to the touch pad portion and the dummy pad portion.

2. The organic light emitting display according to claim 1 , wherein the touch pad portion comprises a plurality of touch pad electrodes spaced from one another, and

wherein the dummy pad portion comprises a plurality of dummy electrodes corresponding to the touch pad electrodes.

3. The organic light emitting display according to claim 2 , wherein the touch pad electrode has a laminate structure comprising: a metal pattern; a transparent electrode pattern overlapping the metal pattern; and at least one interlayer insulating film disposed between the metal pattern and the transparent electrode pattern.

4. The organic light emitting display according to claim 3 , wherein at least one interlayer insulating film is an organic film.

5. The organic light emitting display according to claim 4 , wherein at least one interlayer insulating film is removed from the dead region of at least one of the neighboring portions.

6. The organic light emitting display according to claim 3 , wherein the touch electrode array comprises:

a metal bridge formed in the same layer as the metal pattern on the second buffer layer;

a plurality of first transparent channel electrodes electrically connected to the metal bridge while overlapping the metal bridge in the same layer as the transparent electrode pattern, the first transparent channel electrodes being spaced in a first direction; and

a second transparent channel electrode formed in a second direction while traversing the metal bridge in the same layer as the first transparent channel electrode.

7. The organic light emitting display according to claim 6 , wherein the touch pad electrode further comprises a common transparent electrode pattern that is connected to the transparent electrode pattern and overlaps the same.

8. The organic light emitting display according to claim 7 , further comprising a common transparent electrode in the same layer as the common transparent electrode pattern such that the common transparent electrode covers the first transparent channel electrode and the second transparent channel electrode.

9. The organic light emitting display according to claim 8 , further comprising a first interlayer insulating film between the metal bridge and a layer of the first transparent channel electrode and the second transparent channel electrode; and

a second interlayer insulating film formed between the common transparent electrode and the layer of the first transparent channel electrode and the second transparent channel electrode.

10. The organic light emitting display according to claim 9 , wherein the first interlayer insulating film is removed from a region excluding the metal bridge intersecting the second transparent electrode channel, and the touch pad electrode.

11. The organic light emitting display according to claim 2 , wherein the dummy electrode comprises a gate insulating film, a gate electrode layer, an intermediate insulating film and a source metal layer laminated on the first buffer layer.

12. The organic light emitting display according to claim 1 , wherein the conductive balls are compressed to a predetermined thickness between the touch pad portion and the dummy pad portion.

13. The organic light emitting display according to claim 12 , wherein the neighboring portions oppose each other and at least one of the neighboring portions is spaced from the sealant by a predetermined distance.

14. The organic light emitting display according to claim 1 , further comprising a first etching stopper and a second etching stopper film formed on back surfaces of the first buffer layer and the second buffer layer, respectively.

15. The organic light emitting display according to claim 14 , further comprising a film substrate formed on a back surface of the first etching stopper film.

16. The organic light emitting display according to claim 15 , wherein the film substrate is a plastic insulating film.

17. The organic light emitting display according to claim 14 , further comprising a cover glass formed on a back surface of the second etching stopper film.

18. The organic light emitting display according to claim 14 , wherein the first etching stopper film and the second etching stopper film comprise polyimide or photoacryl.

19. The organic light emitting display according to claim 1 , wherein the first buffer layer and the second buffer layer have a laminate structure including a plurality of inorganic films.

20. An organic light emitting display comprising:

a first buffer layer and a second buffer layer facing each other;

a touch pad portion disposed on the second buffer layer;

a dummy pad portion facing the touch pad portion and disposed on the first buffer layer;

a first neighboring portion disposed on the first buffer layer and adjacent to the dummy pad portion;

a second neighboring portion disposed on the second buffer layer and adjacent to the touch pad portion; and

a sealant including a plurality of conductive balls disposed between the touch pad portion and the dummy pad portion,

wherein a distance between the dummy pad portion and the touch pad portion is less than a distance between the first and second neighboring portions.

21. The organic light emitting display according to claim 20 , wherein the touch pad portion extends a first height from the second buffer layer toward the sealant, the second neighboring portion extends a second height from the second buffer layer toward the sealant, and the first height is greater than the second height.

22. The organic light emitting display according to claim 20 , wherein the second neighboring portion includes an insulating film.

23. The organic light emitting display according to claim 20 , further comprising a thin film transistor array disposed on the first buffer layer.

24. The organic light emitting display according to claim 20 , further comprising an organic light emitting array on the thin film transistor array.

25. The organic light emitting display according to claim 24 , further comprising a protective layer that covers the thin film transistor array and the organic light emitting diode.