Display device and heat dissipating member

• US 8,944,664 B2
• Filed: 01/04/2013
• Issued: 02/03/2015
• Est. Priority Date: 06/27/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Sang Hoon, Choi, Seong Sik, Choi, Jae Chang, Kim, Yong Hwi, Kim, Won Jin
• Primary Examiner(s): Breval, Elmito
• Application Number:
  US13/734,660
• Publication Number:
  US 20140003031A1
• Time in Patent Office: 760 Days
• Field of Search: 362/623, 362/612, 362/613
• US Class Current: 362/623
• CPC Class Codes: B82B 1/005 Constitution or structural means for improving the physical properties of a device
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side
• CPC Class Codes: G02F 1/133628 with cooling means
• CPC Class Codes: G09F 13/04 Signs, boards or panels, illuminated from behind the insignia

Abstract

A display device includes: a display panel; a bottom container member which receives the display panel; an auxiliary member including a bottom, and a side extending from an edge of the bottom, and coupled with the bottom container member; a light source unit coupled with the side of the auxiliary member; and a first heat radiating member between the auxiliary member and the light source unit. The first heat radiating member includes a phase change material.

Claims

1. A display device, comprising:

a display panel;

a bottom container member which receives the display panel;

an auxiliary member coupled with the bottom container member, and comprising a bottom, and a side extending from a first edge of the bottom;

a light source unit coupled with the side of the auxiliary member;

a first heat radiating member between the side of the auxiliary member and the light source unit, and comprising a first phase change material; and

a coupling unit which is on the light source unit and on the side of the auxiliary member, and couples the light source unit with the side of the auxiliary member,

wherein the first heat radiating member between the light source unit and the side of the auxiliary member and comprising the first phase change material, is disposed at a portion of the light source unit which excludes the coupling unit.

2. The display device of claim 1, wherein:

the bottom container member comprises electrolytic galvanized iron.

3. The display device of claim 2, wherein:

the light source unit comprises a printed circuit board, and a rear side of the printed circuit board is coupled with the side of the auxiliary member.

4. The display device of claim 3, wherein

the coupling unit comprises:

a coupling member on the side of the auxiliary member, and

a coupling groove defined on the rear side of the printed circuit board and into which the coupling member is inserted.

5. The display device of claim 4, further comprising:

a second heat radiating member between the auxiliary member and the bottom container member,

wherein the second heat radiating member comprises a second phase change material.

6. The display device of claim 5, further comprising:

a fastening member which fastens the auxiliary member to the bottom container member,

wherein the fastening member comprises a screw.

7. The display device of claim 4, wherein the light source unit further comprises a light emitting member on a front side of the printed circuit board opposite to the rear side.

8. The display device of claim 7, wherein:

the electrolytic galvanized iron comprises a heat radiating paint-treated surface.

9. The display device of claim 8, wherein:

the heat radiating paint comprises a material comprising a carbon nanotube.

10. The display device of claim 4, wherein:

a length from the first edge of the bottom of the auxiliary member to an opposing second edge is about 100 millimeters to about 130 millimeters.

11. The display device of claim 4, wherein:

a thickness of the first heat radiating member is about 0.03 millimeter to about 0.3 millimeter.

12. The display device of claim 11, wherein:

a width of the first heat radiating member is about 30% to about 100% a width of the printed circuit board.

13. The display device of claim 12, wherein:

the coupling unit further comprises a plurality of coupling grooves, and

the first heat radiating member is between adjacent coupling grooves.

14. The display device of claim 4, wherein:

the coupling member comprises;

a protrusion protruding from the side of the auxiliary member; and

a coupling protrusion at a distal end of the protrusion.

15. The display device of claim 14, wherein:

the coupling groove comprises;

an inserting portion into which the coupling protrusion of the coupling member is inserted; and

a coupling groove portion which is continuous with and extends from the inserting portion, and to which the protrusion of the coupling member is hooked.

16. The display device of claim 15, wherein:

a cross section of the coupling member and the coupling groove is a circular, truncated triangular, T-lettered, diamond or trapezoidal shape.

17. The display device of claim 16, wherein:

the auxiliary member further comprises;

a stopper extending from an edge of the side.

18. A display device, comprising:

a display panel;

a bottom container member which receives the display panel;

an auxiliary member coupled with the bottom container member, and comprising a bottom, and a side extending from an edge of the bottom;

a light source unit coupled with the side of the auxiliary member; and

a heat radiating member between the auxiliary member and the bottom container member, and comprising a phase change material,

wherein a length from a first edge of the bottom of the auxiliary member to an opposing second edge is about 100 millimeters to about 130 millimeters.

19. The display device of claim 18, wherein:

the bottom container member comprises electrolytic galvanized iron.

20. The display device of claim 19, wherein:

the light source unit comprises a printed circuit board, and a rear side of the printed circuit board is coupled with the auxiliary member,

further comprising a coupling unit which couples the printed circuit board with the side of the auxiliary member, and comprises;

a coupling member on the side of the auxiliary member, and

a coupling groove on the rear side of the printed circuit board and into which the coupling member is inserted.

21. The display device of claim 20, wherein:

the electrolytic galvanized iron comprises a heat radiating paint-treated surface.