IP Library › Granted Patent US 11,108,008
Granted Patent B2
US 11,108,008 · App. 16/817,778 · Granted Aug 31, 2021

Organic light emitting display device and lighting apparatus for vehicles using the same

Inventor: SeHee Lee (Paju-si, KR)
Assignee: LG DISPLAY CO., LTD.
H01L51/5024B60Q1/04B60Q1/22B60Q1/24B60Q1/2696B60Q1/34B60Q1/44F21S41/155F21S43/145H01L51/5056H01L51/5072H01L51/5278H01L2251/5361H01L2251/5376H01L2251/556H01L2251/558
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Quick Facts
Patent No.
US 11,108,008
App. No.
16/817,778
Granted
Aug 31, 2021
Kind
B2
Abstract

Disclosed are an organic light emitting display device and lighting apparatus for vehicles using the same. The organic light emitting display device includes a first layer including a first organic layer and a first emission layer on a first electrode, a second layer including a second emission layer and a second organic layer on the first layer, a second electrode on the second layer, and a third organic layer between the first layer and the second layer. A thickness of the first emission layer is equal to or greater than a thickness of each of the first organic layer and the second organic layer.

Claims (65)

1. An organic light emitting display device, comprising:

a first organic layer on a first electrode;

a first emission layer on the first organic layer;

a second emission layer on the first emission layer

a second organic layer on the second emission layer;

a second electrode on the second organic layer; and

a third organic layer between the first emission layer and the second emission layer,

wherein a sum of a thickness of the first emission layer and a thickness of the second emission layer is equal to or greater than a thickness of the third organic layer.

2. The organic light emitting display device of claim 1 , wherein the thickness of the first emission layer is equal to or greater than a thickness of the first organic layer.

3. The organic light emitting display device of claim 1 , wherein the thickness of the first emission layer is equal to or greater than a thickness of the second organic layer.

4. The organic light emitting display device of claim 1 , wherein the thickness of the second emission layer is equal to or greater than a thickness of the first organic layer.

5. The organic light emitting display device of claim 1 , wherein the thickness of the second emission layer is equal to or greater than a thickness of the second organic layer.

6. The organic light emitting display device of claim 1 , wherein the first organic layer comprises a hole transfer layer.

7. The organic light emitting display device of claim 6 , wherein the hole transfer layer includes one or more among a hole injection layer, and a hole transport layer.

8. The organic light emitting display device of claim 1 , wherein the second organic layer comprises an electron transfer layer.

9. The organic light emitting display device of claim 8 , wherein the electron transfer layer includes one or more among an electron injection layer, and an electron transport layer.

10. The organic light emitting display device of claim 1 , wherein the third organic layer comprises one or more among a hole transfer layer, an electron transfer layer, a N-type charge generation layer, and a P-type charge generation layer.

11. The organic light emitting display device of claim 1 , wherein one among the first electrode and the second electrode is a semi-transmissive electrode.

12. The organic light emitting display device of claim 1 , wherein the first emission layer and the second emission layer emit lights having at least substantially a same color.

13. The organic light emitting display device of claim 1 , wherein at least one among the first emission layer and the second emission layer comprises two or more kinds of hosts.

14. The organic light emitting display device of claim 1 , wherein at least one among the first emission layer and the second emission layer comprises a fluorescent dopant or a phosphorescent dopant.

15. The organic light emitting display device of claim 1 , further comprising a capping layer on the second electrode.

16. The organic light emitting display device of claim 1 , wherein the thickness of the first emission layer is equal to or greater than the thickness of the second emission layer.

17. An organic light emitting display device, comprising:

a first organic layer on a first electrode;

a first emission layer on the first organic layer;

a second emission layer on the first emission layer

a second organic layer on the second emission layer; and

a second electrode on the second organic layer,

wherein a thickness of the first emission layer is equal to or greater than a thickness of the first organic layer.

18. The organic light emitting display device of claim 17 , wherein the thickness of the first emission layer is equal to or greater than a thickness of the second organic layer.

19. The organic light emitting display device of claim 17 , wherein a thickness of the second emission layer is equal to or greater than the thickness of the first organic layer.

20. The organic light emitting display device of claim 17 , wherein a thickness of the second emission layer is equal to or greater than a thickness of the second organic layer.

21. The organic light emitting display device of claim 17 , wherein the first organic layer comprises a hole transfer layer.

22. The organic light emitting display device of claim 21 , wherein the hole transfer layer includes one or more among a hole injection layer, and a hole transport layer.

23. The organic light emitting display device of claim 17 , wherein the second organic layer comprises an electron transfer layer.

24. The organic light emitting display device of claim 23 , wherein the electron transfer layer includes one or more among an electron injection layer, and an electron transport layer.

25. The organic light emitting display device of claim 17 , further comprising a third organic layer between the first emission layer and the second emission layer.

26. The organic light emitting display device of claim 25 , wherein the third organic layer comprises one or more among a hole transfer layer, an electron transfer layer, a N-type charge generation layer, and a P-type charge generation layer.

27. The organic light emitting display device of claim 25 , wherein a sum of the thickness of the first emission layer and a thickness of the second emission layer is equal to or greater than a thickness of the third organic layer.

28. The organic light emitting display device of claim 17 , wherein one among the first electrode and the second electrode is a semi-transmissive electrode.

29. The organic light emitting display device of claim 17 , wherein the first emission layer and the second emission layer emit lights having at least substantially a same color.

30. The organic light emitting display device of claim 17 , wherein at least one among the first emission layer and the second emission layer comprises two or more kinds of hosts.

31. The organic light emitting display device of claim 17 , wherein at least one among the first emission layer and the second emission layer comprises a fluorescent dopant or a phosphorescent dopant.

32. An organic light emitting display device, comprising:

a first organic layer on a first electrode;

a first emission layer on the first organic layer;

a second emission layer on the first emission layer

a second organic layer on the second emission layer; and

a second electrode on the second organic layer,

wherein a thickness of the second emission layer is equal to or greater than a thickness of the second organic layer.

33. The organic light emitting display device of claim 32 , wherein the thickness of the second emission layer is equal to or greater than a thickness of the first organic layer.

34. The organic light emitting display device of claim 32 , wherein a thickness of the first emission layer is equal to or greater than a thickness of the first organic layer.

35. The organic light emitting display device of claim 32 , wherein a thickness of the first emission layer is equal to or greater than the thickness of the second organic layer.

36. The organic light emitting display device of claim 32 , wherein the first organic layer comprises a hole transfer layer.

37. The organic light emitting display device of claim 36 , wherein the hole transfer layer includes one or among a hole injection layer, and a hole transport layer.

38. The organic light emitting display device of claim 32 , wherein the second organic layer comprises an electron transfer layer.

39. The organic light emitting display device of claim 38 , wherein the electron transfer layer includes one or more among an electron injection layer, and an electron transport layer.

40. The organic light emitting display device of claim 32 , further comprising a third organic layer between the first emission layer and the second emission layer.

41. The organic light emitting display device of claim 40 , wherein the third organic layer comprises one or more among a hole transfer layer, an electron transfer layer, a N-type charge generation layer, and a P-type charge generation layer.

42. The organic light emitting display device of claim 40 , wherein a sum of a thickness of the first emission layer and the thickness of the second emission layer is equal to or greater than a thickness of the third organic layer.

43. The organic light emitting display device of claim 32 , wherein one among the first electrode and the second electrode is a semi-transmissive electrode.

44. The organic light emitting display device of claim 32 , wherein the first emission layer and the second emission layer emit lights having at least substantially a same color.

45. The organic light emitting display device of claim 32 , wherein at least one among the first emission layer and the second emission layer comprises two or more kinds of hosts.

46. The organic light emitting display device of claim 32 , wherein at least one among the first emission layer and the second emission layer comprises a fluorescent dopant or a phosphorescent dopant.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2020
From: LEE, SEHEE
To: LG DISPLAY CO., LTD.
Reel/Frame 052105/0237 →
Priority Claims (1)
KR 10-2015-0121099 · Aug 27, 2015 · national
Continuity (4)
Continuation 16145888 · Sep 28, 2018
Division 15451791 · Mar 7, 2017
Continuation 15154130 · May 13, 2016
Related Publication 20200212334A1 · Jul 2, 2020
Cited By (4)
US 12,276,392 US 12,287,075 US 12,287,076 US 12,392,470