Display Module, Display Device, and Liquid Crystal Television Set

• US 20120249923A1
• Filed: 03/13/2012
• Published: 10/04/2012
• Est. Priority Date: 03/29/2011
• Status: Abandoned Application

• Current Assignee: Funai Electric Co., Ltd. (Funai Electric Holdings Company Limited)
• Original Assignee: Funai Electric Co., Ltd. (Funai Electric Holdings Company Limited)
• Inventors: KONO, Akifumi
• Application Number:
  US13/419,077
• Publication Number:
  US 20120249923A1
• Time in Patent Office: Days
• US Class Current: 349/62
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0068 Arrangements of plural sources, e.g. multi-colour light sources
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/133628 with cooling means

Abstract

This display module includes a display cell, a light source, a light guide plate, and a reflective sheet arranged on a side opposite to the display cell with respect to the light guide plate. A projecting portion protruding toward the light guide plate and coming into contact with the light guide plate is formed on a surface of the reflective sheet closer to the light guide plate.

Claims

1. A display module comprising:

a display cell;

a light source;

a light guide plate including a light-receiving surface receiving light from said light source, guiding said light received by said light-receiving surface to said display cell; and

a reflective sheet reflecting said light received by said light-receiving surface of said light guide plate toward said display cell, arranged on a side opposite to said display cell with respect to said light guide plate, wherein

a projecting portion protruding toward said light guide plate and coming into contact with said light guide plate is formed on a surface of said reflective sheet closer to said light guide plate.

2. The display module according to claim 1, wherein

said projecting portion is formed in a shape having side surfaces and a contact surface coming into surface contact with said light guide plate.

3. The display module according to claim 1, wherein

a plurality of said projecting portions are formed on said surface of said reflective sheet closer to said light guide plate.

4. The display module according to claim 3, wherein

said plurality of projecting portions are arranged over a substantially entire region of said surface of said reflective sheet closer to said light guide plate.

5. The display module according to claim 4, wherein

said plurality of projecting portions are arranged substantially uniformly over said substantially entire region of said surface of said reflective sheet closer to said light guide plate.

6. The display module according to claim 3, wherein

an arrangement interval between said plurality of projecting portions is larger than a protrusion height of each of said projecting portions.

7. The display module according to claim 1, further comprising a heat radiation member having a function of radiating heat from said light source, so provided as to come into contact with a surface of said reflective sheet opposite to said surface on which said projecting portion is formed.

8. The display module according to claim 7, wherein

said heat radiation member includes a plate-like member made of metal.

9. The display module according to claim 1, wherein

a recess portion having a shape corresponding to a shape of said projecting portion is formed at a position, corresponding to said projecting portion, of a surface of said reflective sheet opposite to said light guide plate.

10. The display module according to claim 1, wherein

said projecting portion is formed integrally on said surface of said reflective sheet closer to said light guide plate.

11. A display device comprising:

a display module; and

a housing storing said display module inside, wherein

said display module includes;

a display cell,

a light source,

a light guide plate including a light-receiving surface receiving light from said light source, guiding said light received by said light-receiving surface to said display cell, and

a reflective sheet reflecting said light received by said light-receiving surface of said light guide plate toward said display cell, arranged on a side opposite to said display cell with respect to said light guide plate, and

a projecting portion protruding toward said light guide plate and coming into contact with said light guide plate is formed on a surface of said reflective sheet of said display module closer to said light guide plate.

12. The display device according to claim 11, wherein

said projecting portion is formed in a shape having side surfaces and a contact surface coming into surface contact with said light guide plate.

13. The display device according to claim 11, wherein

a plurality of said projecting portions are formed on said surface of said reflective sheet closer to said light guide plate.

14. The display device according to claim 13, wherein

said plurality of projecting portions are arranged over a substantially entire region of said surface of said reflective sheet closer to said light guide plate.

15. The display device according to claim 14, wherein

said plurality of projecting portions are arranged substantially uniformly over said substantially entire region of said surface of said reflective sheet closer to said light guide plate.

16. The display device according to claim 13, wherein

an arrangement interval between said plurality of projecting portions is larger than a protrusion height of each of said projecting portions.

17. The display device according to claim 11, further comprising a heat radiation member having a function of radiating heat from said light source, so provided as to come into contact with a surface of said reflective sheet opposite to said surface on which said projecting portion is formed.

18. The display device according to claim 17, wherein

said heat radiation member includes a plate-like member made of metal.

19. The display device according to claim 11, wherein

a recess portion having a shape corresponding to a shape of said projecting portion is formed at a position, corresponding to said projecting portion, of a surface of said reflective sheet opposite to said light guide plate.

20. A liquid crystal television set comprising:

a liquid crystal display module; and

a television housing storing said liquid crystal display module inside, wherein

said liquid crystal display module includes;

a liquid crystal display cell,

a light source,

a light guide plate including a light-receiving surface receiving light from said light source, guiding said light received by said light-receiving surface to said liquid crystal display cell, and

a reflective sheet reflecting said light received by said light-receiving surface of said light guide plate toward said liquid crystal display cell, arranged on a side opposite to said liquid crystal display cell with respect to said light guide plate, and

a projecting portion protruding toward said light guide plate and coming into contact with said light guide plate is formed on a surface of said reflective sheet of said liquid crystal display module closer to said light guide plate.