Image display device

• US 6,477,039 B2
• Filed: 02/24/2000
• Issued: 11/05/2002
• Est. Priority Date: 02/24/1999
• Status: Expired due to Fees

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Tajima, Hisao
• Primary Examiner(s): Schuberg, Darren
• Assistant Examiner(s): DUONG, HUNG V
• Application Number:
  US09/511,767
• Publication Number:
  US 20020067591A1
• Time in Patent Office: 985 Days
• Field of Search: 361/681, 361/684-688, 361/815, 361/818-819, 439/152-160, 248/60, 248/581, 248/609, 248/611, 248/615, 248/634, 248/635, 248/638, 364/708.1, 345/60
• US Class Current: 361/679.21
• CPC Class Codes: H04N 5/64 Constructional details of receivers, e.g. cabinets or dust covers furniture aspects of television cabinets A47B81/06
• CPC Class Codes: H04N 5/66 Transforming electric information into light information scanning details H04N3/00
• CPC Class Codes: H04N 5/70 Circuit details for electroluminescent devices
• CPC Class Codes: H04N 9/12 Picture reproducers H04N9/11 takes precedence

Abstract

An image display device includes a display panel, and a housing that includes a frame body arranged on the circumference of the display panel and a back cover arranged on the back of the display panel. The frame body has a structure for sandwiching therein the display panel.

Claims

1. A planar image display device comprising:

a planar display panel;

an image display unit providing an image to be displayed on said display panel, said image display unit including first and second drivers for generating an electric signal for the image display; and

a housing that includes i) a frame body with four sides and a front portion and arranged on a circumference of said display panel and ii) a back cover arranged behind said display panel and positioned at a rear portion of said frame body, wherein

said frame body has a structure for sandwiching said display panel within its four sides, and one of said drivers is supported within said frame body.

2. A planar image display device according to claim 1, wherein said frame body has a structure in which a plurality of members combined are used to sandwich said display panel.

3. A planar image display device according to claim 1, wherein said frame body is comprised of members that are integrated and have a clearance portion for sandwiching said display panel.

4. A planar image display device according to claim 1, wherein said sandwiching portion of said frame body has an elastic member arranged therein.

5. A planar image display device according to claim 1, wherein said sandwiching portion of said frame body has an elastic member and a groove for positioning said elastic member.

6. A planar image display device according to claim 1, wherein inner wall surfaces of said frame body are curved.

7. A planar image display device according to claim 1, wherein said frame body has means for fixing said back cover.

8. A planar image display device according to claim 1, wherein said frame body is made of an aluminum alloy or a magnesium alloy.

9. A planar image display device according to claim 1, wherein a surface of said frame body is treated with oxidation preventing treatment.

10. A planar image display device according to claim 1, wherein members forming the four sides of said frame body are molded by extrusion machining.

11. A planar image display device according to claim 1, wherein said frame body has a space therein, and further comprising a drive controlling electric circuit unit arranged within the space.

12. A planar image display device according to claim 1, further comprising a heat releasing unit for releasing heat generated by said image display unit, wherein said heat releasing unit is disposed in said frame body.

13. A planar image display device according to claim 5, wherein said elastic member has level difference for positioning said display panel.

14. A planar image display device according to claim 11, wherein said drive controlling electric circuit unit is connected to another drive controlling electric circuit unit that is arranged outside the space.

15. A planar image display device according to claim 11, wherein said frame body has heat releasing means on its outside.

16. A planar image display device according to claim 11, wherein said frame body has heat absorbing means on inner walls of the space.

17. A planar image display device according to claim 11, wherein said heat absorbing means is arranged in close contact with said drive controlling electric circuit unit.

18. A planar image display device according to claim 11, wherein said drive controlling electric circuit unit is comprised of circuit substrates, cables and electric devices.

19. A planar image display device according to claim 17, further comprising a thermal conductive member placed between said heat absorbing means and said drive controlling electric circuit unit.

20. A planar image display device according to claim 18, wherein inner walls of said frame body have grooves for positioning said circuit substrates.

21. A planar image display device according to claim 18, wherein an insulating member is placed between inner walls of said frame body and said circuit substrates.

22. A planar image display device comprising:

a planar display panel;

an image display unit providing an image to be displayed on said display panel, said image display unit including first and second drivers for generating an electric signal for the image display; and

a housing that includes i) a frame body with four sides arranged on a circumference of said display panel and ii) a back cover arranged behind said display panel, wherein said frame body has a surface covering portion for partially covering a surface of said display panel, and a supporting portion for supporting with its four sides said display panel, with one of said drivers being supported in said frame body.

23. A planar image display device according to claim 22, wherein said frame body is constructed of a plurality of members including a first member that forms said surface covering portion and a second member forming said supporting portion.

24. A planar image display device according to claim 22, wherein said supporting portion has an adhesion member, which is used to support said display panel.

25. A planar image display device according to claim 22, wherein inner wall surfaces of said frame body are curved.

26. A planar image display device according to claim 22, wherein said frame body has means for fixing said back cover.

27. A planar image display device according to claim 22, wherein said frame body is made of an aluminum alloy or a magnesium alloy.

28. A planar image display device according to claim 22, wherein a surface of said frame body is treated with oxidation preventing treatment.

29. A planar image display device according to claim 22, wherein members forming the four sides of said frame body are molded by extrusion machining.

30. A planar image display device according to claim 22, further comprising a heat releasing unit for releasing heat generated by said image display unit, wherein said heat releasing unit is disposed in said frame body.

31. A planar image display device according to claim 24, wherein said supporting portion has a groove for positioning said adhesion member.

32. A planar image display device comprising:

a planar display panel;

an image display unit providing an image to be displayed on said display panel, said image display unit including first and second drivers for generating an electric signal for the image display; and

a housing covering a circumference and a back of said display panel, wherein a linear groove or a linear convex is formed in said housing, wherein one of said drivers is supported within a circumferential portion of said housing.

33. A planar image display device according to claim 32, wherein the groove or the convex is formed on side wall portions or the back portion of said housing.

34. A planar image display device according to claim 32, wherein said housing has a frame body arranged on the circumference of said display panel and a back cover arranged on the back of said display panel, and wherein the groove or the convex is formed on said frame body.

35. A planar image display device according to claim 32, wherein said frame body has means for fixing said back cover.

36. A planar image display device according to claim 32, wherein said frame body is made of an aluminum alloy or a magnesium alloy.

37. A planar image display device according to claim 32, wherein a surface of said frame body is treated with oxidation preventing treatment.

38. A planar image display device according to claim 32, wherein said frame body includes members forming four sides, with said members being molded by extrusion machining.

39. A planar image display device according to claim 32, further comprising a heat releasing unit for releasing heat generated by said image display unit, wherein said heat releasing unit is disposed in said frame body.

40. An image display device, comprising:

a supporting frame that is placed along a circumference of a planar display panel and resembles a picture frame, wherein said supporting frame has a hollow frame for supporting a perimeter of said display panel; and

a drive controlling electric circuit unit for said display device provided inside said hollow frame, wherein

said hollow frame includes an outer frame and an inner frame, which may be placed at the front and back of a perimeter of said display panel, respectively,

wherein one of said outer frame and said inner frame has a sectional shape approximate to a squared U while the other has a sectional shape approximate to a letter L, so that said hollow frame has a sectional shape approximate to a rectangle when said outer and inner frames are coupled.

41. An image display device according to claim 40, wherein said hollow frame of said supporting frame is molded by extrusion machining, and wherein ends of said hollow frame are coupled to ends of four sides of said supporting frame at corners.

42. An image display device according to claim 40, wherein said hollow frame of said supporting frame is molded by an extrusion machining, and wherein ends of said hollow frame are directly abutted and joined to ends of four sides of said supporting frame at corners.

43. An image display device according to claim 42, wherein ends of said hollow frame are joined to one another by weld or screws.

46. An image display device according to claim 40 or 44, further comprising:

heat absorbing means provided for an internal heat generating member and formed continuously in a longitudinal direction of said supporting frame; and

heat releasing means formed continuously in the same direction as the heat absorbing means.

47. An image display device according to claims 40 or 44 wherein said drive controlling electric circuit unit of said display panel includes circuit substrates, cables and driver devices.

48. An image display device according to claim 40 or 44, wherein said display panel has surface conduction electron-emitting devices.

49. An image display device according to claim 46, wherein said heat absorbing means is constructed of a plurality of projection forms.

50. An image display device according to claim 46, wherein said heat releasing means is constructed of a plurality of projection forms or groove forms, or of a combination of those.

51. An image display device according to claim 47, wherein said hollow frame of said support frame in the vicinity of said cable is curved along said cables.

52. An image display device according to claim 47, wherein said circuit and said driver device mounted thereto are arranged in the vicinity of, or in close contact to, said heat absorbing means.

53. An image display device according to claim 47, wherein a thermal conductive member with elasticity is interposed between said driver device and said heat absorbing means.

54. An image display device according to claim 49, wherein said heat absorbing means is a thin film, a color of which is approximate to black.

55. An image display device according to claim 53, wherein said thermal conductive member is made of a material such as aluminum, carbon and graphite.

56. An image display device according to claim 53, wherein a material of said thermal conductive member is shaped into a sheet, a film or a filler.

57. An image display device according to claim 53, wherein an adhesive member is formed and attached on one side of said thermal conductive member.

44. An image display device, comprising:

a supporting frame that is placed along a circumference of a display panel and resembles a picture frame, wherein said supporting frame has a hollow frame for supporting the perimeter of said display panel, and wherein a drive controlling electric circuit unit for said display device is provided inside said hollow frame,

wherein said drive controlling electric circuit unit of said display panel includes circuit substrates, cables and driver devices,

wherein four sides of said hollow frame of said supporting frame are joined with said other members at corners using screws,

wherein said other members at the corners each form a shape approximate to a letter L when viewed from one side of a display panel where an image is to be displayed.

45. An image display device according to claim 44, wherein said display panel is sandwiched, or adhered and supported through an elastic supporting means.