Organic light-emitting display apparatus

Patent metadata

Field	Value
Publication number	US-9257672-B2
Application number	US-201414480345-A
Country	US
Kind code	B2
Filing date	Sep 8, 2014
Priority date	Sep 9, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

An organic light emitting display apparatus, including a first electrode; a second electrode on the first electrode, the second electrode including silver and magnesium; an organic emission layer between the first electrode and the second electrode; a metal layer between the organic emission layer and the second electrode; and a barrier layer between the organic emission layer and the second electrode.

First claim

What is claimed is:

1. An organic light emitting display apparatus, comprising:
a first electrode;
a second electrode on the first electrode, the second electrode including silver and magnesium;
an organic emission layer between the first electrode and the second electrode;
a metal layer between the organic emission layer and the second electrode; and
a barrier layer between the organic emission layer and the second electrode.

2. The organic light emitting display apparatus as claimed in claim 1 , wherein the metal layer includes at least one selected from the group of ytterbium, samarium, calcium, strontium, europium, terbium, barium, lanthanum, and cesium.

3. The organic light emitting display apparatus as claimed in claim 1 , wherein the barrier layer includes a fluoride.

4. The organic light emitting display apparatus as claimed in claim 3 , wherein the fluoride includes at least one selected from the group of LiF, CaF 2 , NaF 2 and AlF 3 .

5. The organic light emitting display apparatus as claimed in claim 1 , wherein the barrier layer includes an oxide.

6. The organic light emitting display apparatus as claimed in claim 5 , wherein the oxide includes at least one selected from the group of CaO, LiO, MgO, ZnO, and ITO.

7. The organic light emitting display apparatus as claimed in claim 1 , wherein the barrier layer includes a halogen-containing compound.

8. The organic light emitting display apparatus as claimed in claim 1 , wherein a weight percent of silver in the second electrode is greater than a weight percent of magnesium in the second electrode.

9. The organic light emitting display apparatus as claimed in claim 1 , wherein the metal layer is closer to the second electrode than the barrier layer is to the second electrode.

10. The organic light emitting display apparatus as claimed in claim 1 , wherein the metal layer contacts the second electrode.

11. The organic light emitting display apparatus as claimed in claim 1 , wherein the barrier layer is closer to the second electrode than the metal layer is to the second electrode.

12. The organic light emitting display apparatus as claimed in claim 1 , further comprising a buffer layer, the buffer layer being between the second electrode and the organic emission layer.

13. The organic light emitting display apparatus as claimed in claim 12 , wherein the buffer layer is closer to the organic emission layer than the metal layer and the barrier layer are to the organic emission layer.

14. The organic light emitting display apparatus as claimed in claim 12 , wherein the buffer layer includes a fluoride.

15. The organic light emitting display apparatus as claimed in claim 14 , wherein the fluoride includes at least one selected from the group of LiF, CaF 2 , NaF 2 and AlF 3 .

16. The organic light emitting display apparatus as claimed in claim 14 , wherein the buffer layer includes an oxide.

17. The organic light emitting display apparatus as claimed in claim 16 , wherein the oxide includes at least one selected from the group of CaO, LiO, MgO, ZnO, and ITO.

18. The organic light emitting display apparatus as claimed in claim 12 , wherein the buffer layer includes a chloride.

19. The organic light emitting display apparatus as claimed in claim 18 , wherein the chloride includes RbCl.

20. The organic light emitting display apparatus as claimed in claim 12 , wherein the buffer layer includes an organic material.

21. The organic light emitting display apparatus as claimed in claim 1 , further comprising an electron transport layer, the electron transport layer being between the second electrode and the organic emission layer,
wherein the metal layer and the barrier layer are between the electron transport layer and the second electrode.

22. The organic light emitting display apparatus as claimed in claim 21 , further comprising a buffer layer, the buffer layer being between the organic emission layer and the electron transport layer.

23. The organic light emitting display apparatus as claimed in claim 22 , wherein the buffer layer includes at least one selected from the group of fluorides, oxides, chlorides, and organic materials.

24. An organic light emitting display apparatus, comprising:
a first electrode;
a second electrode on the first electrode, the second electrode including silver and magnesium;
an organic emission layer between the first electrode and the second electrode; and
a mixed layer between the organic emission layer and the second electrode, the mixed layer including a metal and a barrier material.

25. The organic light emitting display apparatus as claimed in claim 24 , wherein the metal includes at least one selected from the group of ytterbium, samarium, calcium, strontium, europium, terbium, barium, lanthanum, and cesium.

26. The organic light emitting display apparatus as claimed in claim 24 , wherein the barrier material includes a fluoride.

27. The organic light emitting display apparatus as claimed in claim 26 , wherein the fluoride includes at least one selected from the group of LiF, CaF 2 , NaF 2 and AlF 3 .

28. The organic light emitting display apparatus as claimed in claim 24 , wherein the barrier material includes an oxide.

29. The organic light emitting display apparatus as claimed in claim 28 , wherein the oxide includes at least one selected from the group of CaO, LiO, MgO, ZnO, and ITO.

30. The organic light emitting display apparatus as claimed in claim 24 , wherein the barrier material includes a halogen-containing compound.

31. The organic light emitting display apparatus as claimed in claim 24 , wherein a weight percent of silver in the second electrode is greater than a weight percent of magnesium in the second electrode.

32. The organic light emitting display apparatus as claimed in claim 24 , further comprising a buffer layer, the buffer layer being between the organic emission layer and the second electrode.

33. The organic light emitting display apparatus as claimed in claim 32 , wherein the buffer layer is closer to the organic emission layer than the mixed layer is to the organic emission layer.

34. The organic light emitting display apparatus as claimed in claim 32 , wherein the buffer layer includes a fluoride.

35. The organic light emitting display apparatus as claimed in claim 34 , wherein the fluoride includes at least one selected from the group of LiF, CaF 2 , NaF 2 and AlF 3 .

36. The organic light emitting display apparatus as claimed in claim 32 , wherein the buffer layer includes an oxide.

37. The organic light emitting display apparatus as claimed in claim 36 , wherein the oxide includes at least one selected from the group of CaO, LiO, MgO, ZnO, and ITO.

38. The organic light emitting display apparatus as claimed in claim 32 , wherein the buffer layer includes a chloride.

39. The organic light emitting display apparatus as claimed in claim 38 , wherein the chloride includes RbCl.

40. The organic light emitting display apparatus as claimed in claim 32 , wherein the buffer layer includes an organic material.

41. The organic light emitting display apparatus as claimed in claim 2

Assignees

• Samsung Display Co Ltd

Inventors

• Yoon Seok-Gyu
• Hwang Kyu-Hwan
• Kim Dong-Chan
• Kim Eung-Do
• Seo Dong-Kyu
• Jung Bo-Ra
• Kim Won-Jong
• Song Young-Woo
• Yoo Eui-Jin
• Lee Jong-Hyuk

Classifications

• H10K50/82

  Cathodes · CPC title

• H10K59/80524 Primary

  Transparent cathodes, e.g. comprising thin metal layers · CPC title

• H01L27/32

  Electricity · mapped topic

• H01L27/3244

  Electricity · mapped topic

• H01L51/5234

  Electricity · mapped topic