Organic electro-luminescence display device and method of manfacturing the same

Abstract

Provided is an organic electro-luminescence display device. Because TFTs and organic light-emitting diode devices are formed on two different substrates, respectively, and the two substrates are attached to each other, so that productivity improves and manufacturing costs can be reduced. Also, because a pad portion exposed to the outside is formed using a conductive layer having corrosion resistance, corrosion of the pad portion is prevented, and thus an organic electro-luminescence display device having improved reliability can be provided.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings:

FIG. 1 is a schematic cross-sectional view of an organic electro-luminescence display device according to a related art;

FIG. 2 is a schematic plan view of an organic electro-luminescence display device according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view illustrating a portion of the organic electro-luminescence display device of FIG. 2;

FIGS. 4A to 4F are cross-sectional views explaining a method for manufacturing an organic electro-luminescence display device according to a second embodiment of the present invention;

FIGS. 5A to 5D are cross-sectional views explaining a method for manufacturing an organic electro-luminescence display device according to a third embodiment of the present invention;

FIG. 6 is a cross-sectional view illustrating another portion of the organic electro-luminescence display device of FIG. 2;

FIGS. 7A to 7G are cross-sectional views explaining a method for manufacturing an organic electro-luminescence display device according to a fourth embodiment of the present invention; and

FIGS. 8A to 8D are cross-sectional views explaining a method for manufacturing an organic electro-luminescence display device according to a fifth embodiment of the present invention.

Claims

1. An organic electro-luminescence display device comprising: a first substrate having a first region and a second region defined thereon;a gate line formed on a portion of the first substrate that corresponds to the first region, and a gate pad extending from the gate line and formed on the second region;a data pad extending to the first and second regions of the first substrate;a gate insulating layer formed on the gate line, the gate pad, and the data pad;a data line disposed on the gate insulating layer and crossing the gate line, and a data pad link portion located at an end of the data line;at least one thin film transistor formed on an intersection of the gate line and the data line;a passivation layer including a contact hole exposing portions of the thin film transistor, the data pad, the gate pad, and the data pad link portion; anda link line disposed on the passivation layer to electrically connect the data pad with the data pad link portion.

2. The organic electro-luminescence display device according to claim 1, wherein the data pad is formed by stacking first conductive patterns and second conductive patterns, and the first conductive patterns are formed of a conductive material having corrosion resistance.

3. The organic electro-luminescence display device according to claim 2, wherein the first conductive patterns are formed of one of an indium tin oxide and an indium zinc oxide.

4. The organic electro-luminescence display device according to claim 2, wherein the first conductive patterns have a first resistance and the second conductive patterns have a second resistance less than the first resistance of the first conductive patterns.

5. The organic electro-luminescence display device according to claim 2, wherein the second conductive patterns are formed of one of Mo and Cr.

6. The organic electro-luminescence display device according to claim 2, wherein the data pad comprises the first conductive patterns formed on the second conductive patterns.

7. The organic electro-luminescence display device according to claim 2, wherein the data pad comprises the first conductive patterns formed on the second conductive patterns, and the second conductive patterns comprises an opening exposing a portion of the first conductive patterns.

8. The organic electro-luminescence display device according to claim 1, wherein the gate pad is formed of the same conductive material as that of the data pad.

9. The organic electro-luminescence display device according to claim 1, further comprising: sealant patterns formed on an interface between the first region and the second region; anda second substrate spaced a predetermined distance from the first substrate and attached to the first substrate using the sealant patterns.

10. The organic electro-luminescence display device according to claim 9, further comprising an organic light-emitting diode device formed on an inner surface of the second substrate.

11. The organic electro-luminescence display device according to claim 1, further comprising a connection electrode formed of the same conductive material as that of the link line, and connected to a portion of the thin film transistor exposed via the contact hole.

12. An organic electro-luminescence display device comprising: a first substrate;a data pad formed by stacking at least first conductive patterns and second conductive patterns on the first substrate;a gate insulating layer formed on the data pad;a data pad link portion formed on the gate insulating layer;a passivation layer formed on the data pad link portion and having a contact hole exposing a portion of the data pad link portion; anda link line located on the passivation layer to electrically connect the data pad link portion with the data pad,wherein the first conductive patterns are formed of a conductive material having corrosion resistance.

13. The organic electro-luminescence display device according to claim 12, wherein the first conductive patterns are formed of one of indium tin oxide and indium zinc oxide.

14. The organic electro-luminescence display device according to claim 12, wherein the first conductive patterns have a first resistance and the second conductive patterns have a second resistance less than the first resistance of the first conductive patterns.

15. The organic electro-luminescence display device according to claim 12, wherein the second conductive patterns are formed of one of Mo and Cr.

16. The organic electro-luminescence display device according to claim 12, further comprising: a gate line formed of the same conductive material as that of the data pad on the gate insulating layer; anda gate pad extending from the gate line.

17. The organic electro-luminescence display device according to claim 12, wherein the data pad comprises the first conductive patterns formed on the second conductive patterns.

18. The organic electro-luminescence display device according to claim 12, wherein the data pad comprises the first conductive patterns formed on the second conductive patterns, and the second conductive patterns comprises an opening exposing a portion of the first conductive patterns.

19. The organic electro-luminescence display device according to claim 12, further comprising a second substrate spaced a predetermined distance from the first substrate and attached to the first substrate using sealant patterns.

20. The organic electro-luminescence display device according to claim 19, further comprising an organic light-emitting diode device formed on an inner surface of the second substrate.

21. The organic electro-luminescence display device according to claim 19, wherein the link line is formed on an inside of a region that corresponds to the second substrate and where the sealant patterns are formed.

22. The organic electro-luminescence display device according to claim 12, further comprising a connection electrode formed of the same conductive material as that of the link line, and connected to a portion of the thin film transistor exposed via the contact hole.

23. A method for manufacturing an organic electro-luminescence display device, the method comprising: providing a first substrate;sequentially stacking a first conductive layer and a second conductive layer on the first substrate and patterning the first and second conductive layers to form a gate electrode, a gate line, a gate pad, and a data pad;forming a gate insulating layer on the gate electrode, the gate line, the gate pad, and the data pad;forming an active layer, source/drain electrodes, a data line, and a data pad link portion on a portion of the gate insulating layer that corresponds to the gate electrode;forming a passivation layer on the gate insulating layer including the active layer, the source/drain electrodes, the data line, and the data pad link portion;forming a contact hole exposing portions of the drain electrode, the data pad link portion, the gate pad, and the data pad on the passivation layer; andforming a link line for connecting the data pad with the data pad link portion.

24. The method according to claim 23, wherein the first conductive layer is formed of one of an indium tin oxide and an indium zinc oxide, and the second conductive layer is formed of one of Mo and Cr.

25. The method according to claim 24, wherein the forming of the contact hole comprises etching the second conductive layer to expose the first conductive layer.

26. The method according to claim 23, wherein the first conductive layer is formed of one of Mo and Cr, and the second conductive layer is formed of one of an indium tin oxide and an indium zinc oxide.

27. The method according to claim 23, wherein the forming of the link line comprises forming a connection electrode located on a portion of the drain electrode that is exposed via the contact hole.

28. The method according to claim 23, wherein the contact hole exposing the data pad comprises a first contact hole and a second contact hole exposing both ends of the data pad, respectively.

29. The method according to claim 28, further comprising: providing a second substrate where an organic light-emitting diode device is formed;forming sealant patterns on one of an outer portion of the first substrate and an outer portion of the second substrate; andattaching the two substrate to each other.

30. The method according to claim 29, wherein the sealant patterns are formed on an outer side of the link line.

31. The method according to claim 29, wherein the sealant patterns are formed across a portion between the first and second contact holes.

32. An organic electro-luminescence display device comprising: a first substrate;a gate line located on the first substrate, and a gate pad link portion formed at an end of the gate line;a gate insulating layer formed on the first substrate including the gate line and the gate pad link portion;a data line formed by stacking at least first conductive patterns and second conductive patterns on the gate insulating layer, a data pad located at an end of the data line, and a gate pad separated from the data line;a passivation layer formed on the data line, the data pad, and the gate pad, and including a contact hole exposing portions of the gate pad link portion, the data pad, and the gate pad; anda link line located on the passivation layer to electrically connect the gate pad link portion with the gate pad,wherein the first conductive patterns are formed of a conductive material having corrosion resistance.

33. The organic electro-luminescence display device according to claim 32, wherein the first conductive patterns are formed of one of an indium tin oxide and an indium zinc oxide.

34. The organic electro-luminescence display device according to claim 32, wherein the second conductive patterns are formed of a conductive material of a low resistor having lower resistance than that of the first conductive patterns.

35. The organic electro-luminescence display device according to claim 32, wherein the second conductive patterns are formed of one of Mo and Cr.

36. The organic electro-luminescence display device according to claim 32, wherein the data pad comprises the first conductive patterns formed on the second conductive patterns.

37. The organic electro-luminescence display device according to claim 32, wherein the data pad comprises the first conductive patterns formed on the second conductive patterns, and the second conductive patterns comprises an opening exposing a portion of the first conductive patterns.

38. The organic electro-luminescence display device according to claim 32, wherein the gate line and the data line are formed to cross each other, and a thin film transistor formed on a portion where the gate line and the data line cross each other is further provided.

39. The organic electro-luminescence display device according to claim 38, further comprising a connection electrode formed of the same conductive material as that of the link line and electrically connected to a drain electrode of the thin film transistor.

40. The organic electro-luminescence display device according to claim 32, further comprising a second substrate spaced a predetermined distance from the first substrate and attached to the first substrate using sealant patterns.

41. The organic electro-luminescence display device according to claim 40, further comprising an organic light-emitting diode device formed on an inner surface of the second substrate.

42. The organic electro-luminescence display device according to claim 40, wherein the link line is formed on an inner side of a region that corresponds to the second substrate and where the sealant patterns are formed.

43. The organic electro-luminescence display device according to claim 32, further comprising: a power line located on the first substrate and formed in parallel to the gate line; anda ground pad link portion located at an end of the power line.

44. The organic electro-luminescence display device according to claim 43, further comprising a ground pad located on the gate insulating layer and electrically connected to the ground pad link portion.

45. The method for manufacturing an organic electro-luminescence display device, the method comprising: providing a first substrate;after forming a conductive layer on the first substrate, patterning the conductive layer to form a gate electrode, a gate line, and a gate pad link portion;forming a gate insulating layer on the gate electrode, the gate line, and the gate pad link portion;forming an active layer on a portion of the gate insulating layer that corresponds to the gate electrode;after sequentially forming a first conductive layer and a second conductive layer on the gate insulating layer including the active layer, patterning the first and second conductive layers to simultaneously form source/drain electrodes located in corresponding regions of the active layer, and a data line, a gate pad, and a data pad located on the gate insulating layer;forming a passivation layer on the active layer, the source/drain electrodes, the data line, the gate pad, and the data pad;forming a contact hole exposing portions of the drain electrode, the gate pad link portion, the gate pad, and the data pad in the passivation layer; andforming a link line for connecting the gate pad with the gate pad link portion on the passivation layer.

46. The method according to claim 45, wherein the first conductive layer is formed of one of an indium tin oxide and an indium zinc oxide, and the second conductive layer is formed of one of Mo and Cr.

47. The method according to claim 46, wherein the forming of the contact hole comprises etching the second conductive layer to expose the first conductive layer.

48. The method according to claim 45, wherein the first conductive layer is formed of one of Mo and Cr, and the second conductive layer is formed of one of an indium tin oxide and an indium zinc oxide.

49. The method according to claim 45, wherein the forming of the link line comprises forming a connection electrode located on a portion of the drain electrode that is exposed via the contact hole.

50. The method according to claim 45, wherein the contact hole exposing the data pad comprises a first contact hole and a second contact hole exposing both ends of the data pad, respectively.

51. The method according to claim 45, further comprising: providing a second substrate where an organic light-emitting diode device is formed;forming sealant patterns on one of an outer portion of the first substrate and an outer portion of the second substrate; andattaching the two substrate to each other.

52. The method according to claim 51, wherein the sealant patterns are formed on an outer side of the link line.

53. The method according to claim 51, wherein the sealant patterns are formed across a portion between the first and second contact holes.