A display device, and method for making the same, comprising a thin film transistor formed on a first insulating substrate, a pixel electrode electrically connected to the thin film transistor, an organic layer formed on the pixel electrode, a common electrode formed on the organic layer, a conductive layer formed on the common electrode, a transparent electrode layer formed on the conductive layer, the transparent electrode being applied with a common voltage, and a second insulating substrate located on the transparent electrode layer. Thus, the present invention provides a display device to which common voltage is applied effectively.
1. A display device comprising:
a first insulating substrate;
a thin film transistor disposed on the first insulating substrate;
a pixel electrode electrically connected to the thin film transistor;
an organic emitting layer disposed on the pixel electrode;
a common electrode disposed on the organic light emitting layer;
a conductive polymer layer disposed on the common electrode, and
a transparent electrode layer disposed on the conductive polymer layer for application of a common voltage.
2. The display device according to claim 1 , further comprising
a second insulating substrate disposed on the transparent electrode layer.
3. The display device according to claim 2 , wherein the conductive polymer layer comprises at least one selected from the group consisting of polypyrrole, polyaniline and polythiophene.
4. The display device according to claim 3 , wherein the conductive polymer layer comprises conductive particles.
5. The display device according to claim 4 , wherein the conductive particles comprise silver(Ag) or nickel(Ni).
6. The display device according to claim 2 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defined around the display region, and further comprising a non-conductive sealant disposed on the non-display region for adjoining the first insulating substrate with the second insulating substrate.
7. The display device according to claim 6 , wherein the non-conductive sealant contacts the transparent electrode layer.
8. The display device according to claim 2 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defined around the display region, and the transparent electrode layer corresponds to the display region.
9. The display device according to claim 2 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defined around the display region, and further comprising an insulating layer disposed between the non-display region and the conductive polymer layer.
10. The display device according to claim 2 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defined around the display region, and further comprising a shorting bar disposed on the non-display region for applying a common voltage to the transparent electrode layer.
11. The display device according to claim 10 , further comprising a non-conductive sealant disposed on the non-display region for adjoining the first insulating substrate with the second insulating substrate.
12. The display device according to claim 11 , wherein the shorting bar is arranged closer to the display region than to the non-conductive sealant.
13. The display device according to claim 11 , wherein the non-conductive sealant is arranged closer to the display region than to the shorting bar.
14. The display device according to claim 1 , wherein the conductive polymer layer is eliminated on the organic light emitting layer.
15. The display device according to claim 1 , further comprising:
a partition surrounding the organic light emitting layer.
16. A display device comprising:
a first insulating substrate;
a thin film transistor disposed on the first insulating substrate;
a pixel electrode electrically connected to the thin film transistor;
an organic layer disposed on the pixel electrode;
a common electrode disposed on the organic layer; and
a conductive polymer layer disposed on the common electrode,
wherein the conductive polymer layer comprises conductive particles.
17. The display device according to claim 16 , further comprising
a transparent electrode layer disposed on the conductive polymer layer for application of a common voltage.
18. The display device according to claim 17 , further comprising
a second insulating substrate disposed on the transparent electrode layer.
19. The display device according to claim 18 , wherein the conductive polymer layer comprises at least one selected from the group consisting of polypyrrole, polyaniline and polythiophene.
20. The display device according to claim 16 , wherein the conductive particles comprise silver (Ag) or nickel (Ni).
21. The display device according to claim 18 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defmed around the display region, and further comprising a non- conductive sealant disposed on the non-display region for adjoining the first insulating substrate with the second insulating substrate.
22. The display device according to claim 21 , wherein the non-conductive sealant contacts the transparent electrode layer.
23. The display device according to claim 18 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defined around the display region, and the transparent electrode layer corresponds to the display region.
24. The display device according to claim 18 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defmed around the display region, and further comprising an insulating layer disposed between the non-display region and the conductive polymer layer.
25. The display device according to claim 18 , wherein at least one of the first insulating substrate and the second insulating substrate is provided thereon with a display region and a non-display region defined around the display region, and further comprising a shorting bar disposed on the non-display region for applying a common voltage to the transparent electrode layer.
26. The display device according to claim 16 , further comprising a non- conductive sealant disposed on the non-display region for adjoining the first insulating substrate with the second insulating substrate.
27. The display device according to claim 26 , wherein the shorting bar is arranged closer to the display region than to the non-conductive sealant.
28. The display device according to claim 26 , wherein the non-conductive sealant is arranged closer to the display region than to the shorting bar.
29. The display device according to claim 16 , wherein the conductive polymer layer is eliminated on the organic layer.
30. The display device according to claim 16 , further comprising:
a partition surrounding the organic layer.