Display device

• US 6,927,826 B2
• Filed: 12/27/2000
• Issued: 08/09/2005
• Est. Priority Date: 03/26/1997
• Status: Expired due to Fees

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Yamazaki, Shunpei
• Primary Examiner(s): Nguyen, Dung T.
• Application Number:
  US09/748,166
• Publication Number:
  US 20010002144A1
• Time in Patent Office: 1,686 Days
• Field of Search: 349 42- 44, 349/122, 349/138, 257/59, 257/72
• US Class Current: 349/138
• CPC Class Codes: G02F 1/133334 Electromagnetic shields
• CPC Class Codes: G02F 1/133385 with cooling means, e.g. fans
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence

Abstract

There is disclosed a structure for radiating heat generated by TFTs in a liquid crystal panel. A DLC film 125 is provided on a resin interlayer film 123 disposed on the TFTs 105, 109, and 113. The DLC film 125 can be easily formed on the resin film, and has high heat conductivity, so that the film can be made to function as a heat radiating layer.

Claims

1. An electroluminescence display device comprising:

at least one thin film transistor formed over a substrate;

a first insulating layer comprising organic resin formed over said thin film transistor;

a second insulating layer, comprising diamond-like carbon formed over said first insulating layer;

a pixel electrode formed over said second insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second insulating layer.

2. An electroluminescence display device according to claim 1, wherein said organic resin is selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

3. An electroluminescence display device according to claim 1, wherein said first insulating layer has a planarized surface.

4. An electroluminescence display device according to claim 1, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

5. An electroluminescence display device comprising:

at least one thin film transistor formed over a substrate;

a first insulating layer comprising silicon nitride formed over said thin film transistor;

a second insulating layer comprising organic resin formed over said first insulating layer;

a third insulating layer comprising diamond-like carbon formed over said second insulating layer;

a pixel electrode formed over said third insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said third insulating layer.

6. An electroluminescence display device according to claim 5, wherein said organic resin is selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

7. An electroluminescence display device according to claim 5, wherein said second insulating layer has a planarized surface.

8. An electroluminescence display device according to claim 5, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

9. An electroluminescence display device comprising:

at least one thin film transistor formed over a substrate;

a first insulating layer comprising organic resin formed over said thin film transistor;

a second insulating layer comprising diamond-like carbon formed over said first insulating layer;

a third insulating layer comprising organic resin formed over said second insulating layer;

a pixel electrode formed over said third insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said third insulating layer.

10. An electroluminescence display device according to claim 9, wherein said organic resin are selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

11. An electroluminescence display device according to claim 9, wherein said first insulating layer has a planarized surface.

12. An electroluminescence display device according to claim 9, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

13. An electroluminescence display device comprising:

an active matrix region and a driver region formed over a substrate, wherein said active matrix region comprises;

at least one thin film transistor;

a first insulating layer comprising organic resin formed over said thin film transistor;

a second insulating layer comprising diamond-like carbon formed over said first insulating layer;

a pixel electrode formed over said second insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second insulating layer.

14. An electroluminescence display device according to claim 13, wherein said organic resin is selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

15. An electroluminescence display device according to claim 13, wherein said first insulating layer has a planarized surface.

16. An electroluminescence display device according to claim 13, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

17. An electroluminescence display device comprising:

an active matrix region and a driver region over a substrate, wherein said active matrix region comprises;

at least one thin film transistor;

a first insulating layer comprising silicon nitride formed over said thin film transistor;

a second insulating layer comprising organic resin formed over said first insulating layer;

a third insulating layer comprising diamond-like carbon formed over said second insulating layer;

a pixel electrode formed over said third insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said third insulating layer.

18. An electroluminescence display device according to claim 17, wherein said organic resin is selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

19. An electroluminescence display device according to claim 17, wherein said second insulating layer has a planarized surface.

20. An electroluminescence display device according to claim 17, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

21. An electroluminescence display device comprising:

an active matrix region and a driver region over a substrate, wherein said active matrix region comprises;

at least one thin film transistor;

a first insulating layer comprising organic resin formed over said thin film transistor;

a second insulating layer comprising diamond-like carbon formed over said first insulating layer;

a third insulating layer comprising organic resin formed over said second insulating layer;

a pixel electrode formed over said third insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said third insulating layer.

22. An electroluminescence display device according to claim 21, wherein said organic resin are selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

23. An electroluminescence display device according to claim 21, wherein said first insulating layer has a planarized surface.

24. An electroluminescence display device according to claim 21, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

25. An electroluminescence display device comprising:

a switching element comprising at least one thin film transistor formed over a substrate;

a first insulating layer comprising organic resin formed over said switching element;

a second insulating layer comprising diamond-like carbon formed over said first insulating layer;

a pixel electrode formed over said second insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second insulating layer.

26. An electroluminescence display device according to claim 25, wherein said organic resin is selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

27. An electroluminescence display device according to claim 25, wherein said first insulating layer has a planarized surface.

28. An electroluminescence display device according to claim 25, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

29. An electroluminescence display device comprising:

a switching element comprising at least one thin film transistor formed over a substrate;

a first insulating layer comprising organic resin having a flattened upper surface, formed over said switching element;

a second insulating layer comprising diamond-like carbon formed over said first insulating layer;

a pixel electrode formed over said second insulating layer, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second insulating layer.

30. An electroluminescence display device according to claim 29, wherein said organic resin is selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

31. An electroluminescence display device according to claim 29, wherein said first insulating layer has a planarized surface.

32. An electroluminescence display device according to claim 29, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

33. An electroluminescence display device comprising:

at least one thin film transistor formed over a substrate;

a flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said flattened insulating layer;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said insulating layer.

34. An electroluminescence display device according to claim 33, wherein said flattened insulating layer comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

35. An electroluminescence display device according to claim 33, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

36. An electroluminescence display device comprising:

at least one thin film transistor formed over a substrate;

a first flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said first flattened insulating layer;

a second flattened insulating layer formed over said insulating layer comprising diamond-like carbon;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second flattened insulating layer.

37. An electroluminescence display device according to claim 36, wherein at least one of said first and second flattened insulating layers comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

38. An electroluminescence display device according to claim 36, wherein said electroluminescence display device is incorporated into an electric apparatus selected from the group consisting of a portable information terminal, a head mount display, a portable telephone, a video camera and a projector.

39. A portable information terminal comprising:

at least one thin film transistor formed over a substrate;

a flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said flattened insulating layer;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said insulating layer.

40. A portable information terminal according to claim 39, wherein said flattened insulating layer comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

41. A portable information terminal comprising:

at least one thin film transistor formed over a substrate;

a first flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said first flattened insulating layer;

a second flattened insulating layer formed over said insulating layer comprising diamond-like carbon;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second flattened insulating layer.

42. A portable information terminal according to claim 41, wherein at least one of said first and second flattened insulating layers comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

43. A head mount display comprising:

at least one thin film transistor formed over a substrate;

a flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said flattened insulating layer;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said insulating layer.

44. A head mount display according to claim 43, wherein said flattened insulating layer comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

45. A head mount display comprising:

at least one thin film transistor formed over a substrate;

a first flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said first flattened insulating layer;

a second flattened insulating layer formed over said insulating layer comprising diamond-like carbon;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second flattened insulating layer.

46. A head mount display according to claim 45, wherein at least one of said first and second flattened insulating layers comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

47. A portable telephone comprising:

at least one thin film transistor formed over a substrate;

a flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said flattened insulating layer;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said insulating layer.

48. A portable telephone according to claim 47, wherein said flattened insulating layer comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

49. A portable telephone comprising:

at least one thin film transistor formed over a substrate;

a first flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said first flattened insulating layer;

a second flattened insulating layer formed over said insulating layer comprising diamond-like carbon;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second flattened insulating layer.

50. A portable telephone according to claim 49, wherein at least one of said first and second flattened insulating layers comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

51. A video camera comprising:

at least one thin film transistor formed over a substrate;

a flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said flattened insulating layer;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said insulating layer.

52. A video camera according to claim 51, wherein said flattened insulating layer comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

53. A video camera comprising:

at least one thin film transistor formed over a substrate;

a first flattened insulating layer formed aver said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said first flattened insulating layer;

a second flattened insulating layer formed over said insulating layer comprising diamond-like carbon;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second flattened insulating layer.

54. A video camera according to claim 53, wherein at least one of said first and second flattened insulating layers comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

55. A projector comprising:

at least one thin film transistor formed over a substrate;

a flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said flattened insulating layer;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said insulating layer.

56. A projector according to claim 55, wherein said flattened insulating layer comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.

57. A projector comprising:

at least one thin film transistor formed over a substrate;

a first flattened insulating layer formed over said thin film transistor;

an insulating layer comprising diamond-like carbon formed over said first flattened insulating layer;

a second flattened insulating layer formed over said insulating layer comprising diamond-like carbon;

a pixel electrode formed over said insulating layer comprising diamond-like carbon, said pixel electrode electrically connected to said thin film transistor; and

a light-emitting layer formed over said second flattened insulating layer.

58. A projector according to claim 57, wherein at least one of said first and second flattened insulating layers comprises an organic resin selected from the group consisting of polyimide, polyimideamide, polyamide, acryl and epoxy.