Luminescent device and process of manufacturing the same
View Patent ↗An object is to improve the element characteristic of a luminescent element. In an anode 122 connected to a drain interconnection 120 of a current-controlling TFT 202 , slits are made. A transparent hole generating layer 124 is formed on the anode 122 . Since the slits are made, luminescence can be taken out even if a light-shielding metal film is used as the anode 122 . Since the hole generating layer 124 has semiconductivity, an electric field applied from the anode 122 to an organic compound layer 125 can be made uniform. Since holes are generated in the hole generating layer 124 , the density of carriers injected from the anode 122 can be made high. In this way, a luminescent element having a low driving voltage and a high brightness can be manufactured.
1. A luminescent device comprising:
an anode having at least one slit;
a cathode;
an organic compound layer provided between said anode and said cathode,
wherein said organic compound layer comprises a hole generating layer provided on a same surface as said anode or provided in contact with said anode, and
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
2. A device according to claim 1 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
3. A device according to claim 1 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
4. A device according to claim 1 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an transport layer.
5. A device according to claim 1 , wherein width of the slits is 5 to 15 times larger than the interval between the slits.
6. An electrical apparatus, using the luminescent device according to claim 1 .
7. A device according to claim 1 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
8. A luminescent device comprising:
a thin film transistor;
an anode having at least one slit and connected with said thin film transistor;
a cathode;
an organic compound layer provided between said anode and said cathode,
wherein said organic compound layer comprises a hole generating layer provided on a same surface as said anode or provided in contact with said anode,
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween,
wherein width of the slits is 5 to 15 times larger than the interval between the slits, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
9. A device according to claim 8 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
10. A device according to claim 8 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
11. A device according to claim 8 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
12. An electrical apparatus, using the luminescent device according to claim 8 .
13. A device according to claim 8 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
14. A luminescent device comprising:
an anode having at least one slit;
a cathode;
an organic compound layer provided between said anode and said cathode,
wherein said organic compound layer comprises a hole generating layer provided on a same surface as said anode or provided in contact with said anode,
wherein a surface of said hole generating layer is made flat,
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
15. A device according to claim 14 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
16. A device according to claim 14 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
17. A device according to claim 14 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
18. A device according to claim 14 , wherein width of the slits is 5 to 15 times larger than the interval between the slits.
19. An electrical apparatus, using the luminescent device according to claim 14 .
20. A device according to claim 14 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
21. A luminescent device comprising:
a thin film transistor;
an anode having at least one slit and connected with said thin film transistor;
a cathode;
an organic compound layer provided between said anode and said cathode,
wherein said organic compound layer comprises a hole generating layer provided on a same surface as said anode or provided in contact with said anode,
wherein a surface of said hole generating layer is made flat,
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween,
wherein width of the slits is 5 to 15 times larger than the interval between the slits, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
22. A device according to claim 21 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
23. A device according to claim 21 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
24. A device according to claim 21 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
25. An electrical apparatus, using the luminescent device according to claim 21 .
26. A device according to claim 21 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
27. A luminescent device comprising:
an anode having at least one slit;
a cathode;
an organic compound layer provided between said anode and said cathode, an electric field applied across said organic compound layer from said anode; and
a hole generating layer provided in contact with said anode to make said electric field uniform, and
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
28. A device according to claim 27 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
29. A device according to claim 27 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
30. A device according to claim 27 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
31. A device according to claim 27 , wherein width of the slits is 5 to 15 times larger than the interval between the slits.
32. An electrical apparatus, using the luminescent device according to claim 27 .
33. A device according to claim 27 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
34. A luminescent device comprising:
a thin film transistor;
an anode having at least one slit and connected with said thin film transistor;
a cathode;
an organic compound layer provided between said anode and said cathode, an electric field applied across said organic compound layer from said anode; and
a hole generating layer provided in contact with said anode to make said electric field uniform,
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween, wherein width of the slits is 5 to 15 times larger than the interval between the slits, and wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
35. A device according to claim 34 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
36. A device according to claim 34 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
37. A device according to claim 34 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
38. An electrical apparatus, using the luminescent device according to claim 34 .
39. A device according to claim 34 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
40. A luminescent device comprising:
an anode having at least one slit;
a cathode;
an organic compound layer provided between said anode and said cathode,
wherein said organic compound layer comprises a hole generating layer provided in contact with said anode,
wherein said organic compound layer further comprises a hole injection layer provided in contact with said hole generating layer, and
wherein said hole generating layer and said hole injection layer are made from a same material.
41. A device according to claim 40 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
42. A device according to claim 40 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
43. A device according to claim 40 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
44. A device according to claim 40 , wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween.
45. A device according to claim 44 , wherein width of the slits is 5 to 15 times larger than the interval between the slits.
46. A device according to claim 40 , wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
47. An electrical apparatus, using the luminescent device according to claim 40 .
48. A device according to claim 40 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
49. A luminescent device comprising:
an anode having at least one slit;
a cathode;
an organic compound layer provided between said anode and said cathode,
wherein said organic compound layer comprises a hole generating layer provided in contact with said anode,
wherein said organic compound layer further comprises a hole injection layer provided in contact with said hole generating layer, and
wherein said hole generating layer and said hole injection layer are made from a same material.
50. A device according to claim 49 , wherein said hole generating layer comprises a low molecule material and an electron receptor.
51. A device according to claim 49 , wherein said hole generating layer comprises a high molecule material and an electron receptor.
52. A device according to claim 49 , wherein said organic compound layer comprises a hole injection layer, a hole transport layer, a luminescent layer or an electron transport layer.
53. A device according to claim 49 , wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween.
54. A device according to claim 53 , wherein width of the slits is 5 to 15 times larger than the interval between the slits.
55. An electrical apparatus, using the luminescent device according to claim 49 .
56. A device according to claim 49 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
57. A process of manufacturing a luminescent device comprising:
forming an anode having at least one slit;
forming a hole generating layer contacting said anode and having a surface made flat; and
forming at least one layer selected from the group consisting of a hole injection layer, a hole transport layer, a luminescent layer and an electron transport layer to contact said hole generating layer, and
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
58. A process according to claim 57 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.
59. A process of manufacturing a luminescent device comprising:
forming an anode having at least one slit
connecting said anode with a thin film transistor;
forming a hole generating layer contacting said anode and having a surface made flat; and
forming at least one layer selected from the group consisting of a hole injection layer, a hole transport layer, a luminescent layer and an electron transport layer to contact said hole generating layer,
wherein said anode has two slits with an interval from 0.5 to 3 μm therebetween, and
wherein a ratio of an area where said slit is made to an area of said anode is from 70 to 90%.
60. A process according to claim 59 wherein said luminescent device is incorporated into at least one selected from the group consisting of a display device, a digital still camera, a laptop computer, a mobile computer, a portable image reproducing device equipped with a recording medium, a goggle type display, a video camera and a cellular phone.