Organic Light Emitting Diode Device and Light Emitting Layer Manufacture Method Thereof

• US 20080074034A1
• Filed: 09/22/2006
• Published: 03/27/2008
• Est. Priority Date: 09/22/2006
• Status: Abandoned Application

• Current Assignee: National Tsing Hua University
• Original Assignee: National Tsing Hua University
• Inventors: Jou, Jwo-Huei
• Application Number:
  US11/534,568
• Publication Number:
  US 20080074034A1
• Time in Patent Office: Days
• US Class Current: 313/504
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 71/00 Manufacture or treatment specially adapted for the organic devices covered by this subclass
• CPC Class Codes: H10K 71/164 using vacuum deposition
• CPC Class Codes: H10K 71/30 Doping active layers, e.g. electron transporting layers
• CPC Class Codes: H10K 71/441 in the presence of solvent vapors, e.g. solvent vapour annealing

Abstract

An organic light emitting diode apparatus and light emitting layer manufacture method thereof are disclosed. The manufacture method for manufacturing the light emitting layer of the OLED comprises the following steps: an acetone or a tetrahydrofuran as an organic solvent is provided to dissolve each luminescent material and each host material respectively. The solution of the luminescent material and the solution of the host material are mixed based on a predetermined material concentration to produce a mixed solution. The mixed solution is then dried by a drying procedure to produce a solid mixed material. Lastly, the solid mixed material is fabricated by vapor deposition to make a light emitting layer.

Claims

1. A method for manufacturing a light emitting layer of an organic light emitting diode, comprising:

providing an organic solvent for dissolving at least one luminescent material and at least one host material respectively;

mixing a solution of the luminescent material and a solution of the host material based on a predetermined material concentration to produce a mixed solution;

drying the mixed solution to produce a solid mixed material through a drying procedure; and

fabricating the solid mixed material to make a light emitting layer through a vapor deposition.

2. The method of claim 1, further comprising the step of providing toluene to be the organic solvent.

3. The method of claim 1, further comprising the step of providing acetone to be the organic solvent.

4. The method of claim 1, further comprising the step of providing terahydrofuran (THF) to be the organic solvent.

5. The method of claim 1, further comprising the step of providing a fluorescent material to be the luminescent material in order to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

6. The method of claim 5, further comprising the step of providing a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene or CBP to be the host material, the host material being mixed with the fluorescent material.

7. The method of claim 1, further comprising the step of providing a phosphorescent material to be the luminescent material in order to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

8. The method of claim 1, further comprising providing a single or various binding organic materials from CBP, mCP, CDBP, TPBi, TCTA or BCP to be the host material, the host material being mixed with the phosphorescent material.

9. The method of claim 1, further comprising the step of providing a fluorescent material and a phosphorescent material to be the luminescent material in order to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

10. The method of claim 1, further comprising the step of providing a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene, CBP, mCP, CDBP, TPBi, TCTA or BCP to be the host material.

11. The method of claim 1, further comprising the step of providing a single or various binding from an electron-transporting material, an electron injection material, a hole-transporting material, a hole injection material, a hole blocking material or a functional supporting material to be doped into the host material so as to allow the light emitting layer to have functionality.

12. The method of claim 1, further comprising the step of using a Commission International deL'"'"'Eclairage (CIE) color coordinate for the color light emitted by the light emitting layer to mark x coordinate range between 0.25 to 0.45 and y coordinate range between 0.25 to 0.45.

13. The method of claim 1, wherein the light emitting layer emits the light with color rendering index of above 70.

14. The method of claim 1, further comprising the step of providing evaporation to be the vapor deposition.

15. The method of claim 1, further comprising the step of providing a sputtering to be the vapor deposition.

16. An organic light emitting diode device comprising:

a substrate;

a first electrically conducting layer disposed on the substrate;

a light emitting layer disposed on the first electrically conducting layer; and

a second electrically conducting layer disposed on the light emitting layer;

wherein at least one luminescent material and at least one host material are dissolved respectively through an organic solvent, and a solution of the luminescent material and a solution of the host material are mixed based on a predetermined material concentration to produce a mixed solution, and the mixed solution is dried by a drying procedure to produce a solid mixed material, and the solid mixed material is fabricated to form the light emitting layer through a vapor deposition.

17. The organic light emitting diode device of claim 16, wherein the organic solvent is Toluene.

18. The organic light emitting diode device of claim 16, wherein the organic solvent is Acetone.

19. The organic light emitting diode device of claim 16, wherein the organic solvent is THF.

20. The organic light emitting diode device of claim 16, wherein the luminescent material is a fluorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

21. The organic light emitting diode device of claim 16, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene or CBP, and the host material is mixed with the fluorescent material.

22. The organic light emitting diode device of claim 16, wherein the luminescent material is a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

23. The organic light emitting diode device of claim 22, wherein the host material is a single or various binding organic materials from CBP, mCP, CDBP, TPBi, TCTA or BCP, and the host material is mixed with the phosphorescent material.

24. The organic light emitting diode device of claim 16, wherein the luminescent material is a fluorescent material and a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

25. The organic light emitting diode device of claim 16, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene, CBP, mCP, CDBP, TPBi, TCTA or BCP.

26. The organic light emitting diode device of claim 16, wherein the host material is doped with a single or various binding from an electron-transporting material, an electron injection material, a hole-transporting material, a hole injection material, a hole blocking material or a functional supporting material so as to allow the light emitting layer to have functionality.

27. The organic light emitting diode device of claim 16, wherein at least one functional supporting layer is formed between the first electrically conducting layer and the light emitting layer.

28. The organic light emitting device of claim 16, wherein at least one functional supporting layer is formed between the second electrically conducting layer and the light emitting layer.

29. The organic light emitting diode device of claim 16, wherein the color light emitted by the light emitting layer uses a CIE color coordinate to mark x coordinate range between 0.25 and 0.45 and y coordinate range between 0.25 and 0.45.

30. The organic light emitting diode device of claim 16, wherein the light emitting layer emits the light with color rendering index of above 70.

31. The organic light emitting diode device of claim 16, wherein the vapor deposition is evaporation.

32. The organic light emitting diode device of claim 16, wherein the vapor deposition is sputtering.

33. An organic light emitting diode device comprising:

a substrate;

a first electrically conducting layer disposed on the substrate;

a hole-transporting layer disposed on the first electrically conducting layer;

an electron transporting light emitting layer disposed on the hole-transporting layer; and

a second electrically conducting layer disposed on the electron transporting light emitting layer;

wherein at least one luminescent material and at least one host material are dissolved respectively through an organic solvent, and a solution of the luminescent material and a solution of the host material are mixed based on a predetermined material concentration to produce a mixed solution, and the mixed solution is dried by a drying procedure to produce a solid mixed material, and the solid mixed material is fabricated to form the electron transporting light emitting layer through a vapor deposition.

34. The organic light emitting diode device of claim 33, wherein the organic solvent is Toluene.

35. The organic light emitting diode device of claim 33, wherein the organic solvent is Acetone.

36. The organic light emitting diode device of claim 33, wherein the organic solvent is THF.

37. The organic light emitting diode device of claim 33, wherein the luminescent material is a fluorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

38. The organic light emitting diode device of claim 33, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene or CBP, and the host material is mixed with the fluorescent material.

39. The organic light emitting diode device of claim 33, wherein the luminescent material is a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

40. The organic light emitting diode device of claim 39, wherein the host material is a single or various binding organic materials from CBP, mCP, CDBP, TPBi, TCTA or BCP, and the host material is mixed with the phosphorescent material.

41. The organic light emitting diode device of claim 33, wherein the luminescent material is a fluorescent material and a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

42. The organic light emitting diode device of claim 33, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene, CBP, mCP, CDBP, TPBi, TCTA or BCP.

43. The organic light emitting diode device of claim 33, wherein the host material is doped with an electron transporting material to fabricate the electron transporting light emitting layer.

44. The organic light emitting diode device of claim 33, wherein at least one functional supporting layer is formed between the first electrically conducting layer and the hole-transporting layer.

45. The organic light emitting diode device of claim 33, wherein at least one functional supporting layer is formed between the hole transporting layer and the electron transporting light emitting layer.

46. The organic light emitting diode device of claim 33, wherein at least one functional supporting layer is formed between the electron transporting light emitting layer and the second electrically conducting layer.

47. The organic light emitting diode device of claim 33, wherein the color light emitted by the electron transporting light emitting layer uses a CIE color coordinate to mark x coordinate range between 0.25 and 0.45 and y coordinate range between 0.25 and 0.45.

48. The organic light emitting diode device of claim 33, wherein the electron transporting light emitting layer emits the light with color rendering index of above 70.

49. The organic light emitting diode device of claim 33, wherein the vapor deposition is evaporation.

50. The organic light emitting diode device of claim 33, wherein the vapor deposition is sputtering.

51. An organic light emitting diode device comprising:

a substrate;

a first electrically conducting layer disposed on the substrate;

a hole-transporting light emitting layer disposed on the first electrically conducting layer;

an electron transporting layer disposed on the hole-transporting light emitting layer; and

a second electrically conducting layer disposed on the electron transporting layer;

wherein at least one luminescent material and at least one host material are dissolved respectively through an organic solvent, and a solution of the luminescent material and a solution of the host material are mixed based on a predetermined material concentration to produce a mixed solution, and the mixed solution is dried by a drying procedure to produce a solid mixed material, and the solid mixed material is fabricated to form the hole-transporting light emitting layer through a vapor deposition.

52. The organic light emitting diode device of claim 51, wherein the organic solvent is Toluene.

53. The organic light emitting diode device of claim 51, wherein the organic solvent is Acetone.

54. The organic light emitting diode device of claim 51, wherein the organic solvent is THF.

55. The organic light emitting diode device of claim 51, wherein the luminescent material is a fluorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

56. The organic light emitting diode device of claim 55, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene or CBP, and the host material is mixed with the fluorescent material.

57. The organic light emitting diode device of claim 51, wherein the luminescent material is a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

58. The organic light emitting diode device of claim 57, wherein the host material is a single or various binding organic materials from CBP, mCP, CDBP, TPBi, TCTA or BCP, and the host material is mixed with the phosphorescent material.

59. The organic light emitting diode device of claim 51, wherein the luminescent material is a fluorescent material and a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

60. The organic light emitting diode device of claim 51, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene, CBP, mCP, CDBP, TPBi, TCTA or BCP.

61. The organic light emitting diode device of claim 51, wherein the host material is doped with a hole-transporting material to fabricate the hole-transporting light emitting layer.

62. The organic light emitting diode device of claim 51, wherein at least one functional supporting layer is formed between the first electrically conducting layer and the hole-transporting light emitting layer.

63. The organic light emitting diode device of claim 51, wherein at least one functional supporting layer is formed between the hole-transporting light emitting layer and the electron transporting layer.

64. The organic light emitting diode device of claim 51, wherein at least one functional supporting layer is formed between the electron transporting layer and the second electrically conducting layer.

65. The organic light emitting diode device of claim 51, wherein the color light emitted by the hole-transporting light emitting layer uses a CIE color coordinate to mark x coordinate range between 0.25 and 0.45 and y coordinate range between 0.25 and 0.45.

66. The organic light emitting diode device of claim 51, wherein the hole-transporting light emitting layer emits the light with color rendering index of above 70.

67. The organic light emitting diode device of claim 51, wherein the vapor deposition is evaporation.

68. The organic light emitting diode device of claim 51, wherein the vapor deposition is sputtering.

69. An organic light emitting diode device comprising:

a substrate;

a first electrically conducting layer disposed on the substrate;

a hole-transporting layer disposed on the first electronically conducting layer;

a light emitting layer disposed on the hole-transporting layer;

an electron transporting layer disposed on the light emitting layer; and

a second electrically conducting layer disposed on the electron transporting layer;

wherein at least one luminescent material and at least one host material are dissolved respectively through an organic solvent, and a solution of the luminescent material and a solution of the host material are mixed based on a predetermined material concentration to produce a mixed solution, and the mixed solution is dried by a drying procedure to produce a solid mixed material, and the solid mixed material is fabricated to form the light emitting layer through a vapor deposition.

70. The organic light emitting diode device of claim 69, wherein the organic solvent is Toluene.

71. The organic light emitting diode device of claim 69, wherein the organic solvent is Acetone.

72. The organic light emitting diode device of claim 69, wherein the organic solvent is THF.

73. The organic light emitting diode device of claim 69, wherein the luminescent material is a fluorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

74. The organic light emitting diode device of claim 73, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene or CBP, and the host material is mixed with the fluorescent material.

75. The organic light emitting diode device of claim 69, wherein the luminescent material is a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

76. The organic light emitting diode device of claim 75, wherein the host material is a single or various binding organic materials from CBP, mCP, CDBP, TPBi, TCTA or BCP, and the host material is mixed with the phosphorescent material.

77. The organic light emitting diode device of claim 69, wherein the luminescent material is a fluorescent material and a phosphorescent material to allow the luminescence spectrum emitted by the light emitting layer to cover an ultraviolet light from an infrared light.

78. The organic light emitting diode device of claim 69, wherein the host material is a single or various binding organic materials from Alq₃, DPVBi, BANE, Rubrene, CBP, mCP, CDBP, TPBi, TCTA or BCP.

79. The organic light emitting diode device of claim 69, wherein the host material is doped with a single or various binding from an electron-transporting material, an electron injection material, a hole-transporting material, a hole injection material, a hole blocking material or a functional supporting material to allow the light emitting layer to have functionality.

80. The organic light emitting diode device of claim 69, wherein at least one functional supporting layer is formed between the first electrically conducting layer and the hole-transporting light emitting layer.

81. The organic light emitting diode device of claim 69, wherein at least one functional supporting layer is formed between the hole-transporting light emitting layer and the light emitting layer.

82. The organic light emitting diode device of claim 69, wherein at least one functional supporting layer is formed between the electron transporting layer and the light emitting layer.

83. The organic light emitting diode device of claim 69, wherein at least one functional supporting layer is formed between the electron transporting layer and the second electrically conducting layer.

84. The organic light emitting diode device of claim 69, wherein the color light emitted by the light emitting layer uses a CIE color coordinate to mark x coordinate range between 0.25 and 0.45 and y coordinate range between 0.25 and 0.45.

85. The organic light emitting diode device of claim 69, wherein the light emitting layer emits the light with color rendering index of above 70.

86. The organic light emitting diode device of claim 69, wherein the vapor deposition is evaporation.

87. The organic light emitting diode device of claim 69, wherein the vapor deposition is sputtering.