Display device

• US 9,658,659 B2
• Filed: 01/10/2014
• Issued: 05/23/2017
• Est. Priority Date: 01/10/2013
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Yun, Seunghyun, Lee, Sangsoo, Hwang, Hyunseok, Lee, Jangil, Yoo, Kwangsik, Choi, Youngdon, Hong, Seokmin, Nam, Kihoon, Choi, Woohyuk, Ryu, Inkeun
• Primary Examiner(s): Haughton, Anthony
• Assistant Examiner(s): Ahmad, Yahya
• Application Number:
  US14/760,435
• Publication Number:
  US 20150355689A1
• Time in Patent Office: 1,229 Days
• Field of Search: 361688-723
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133314 Back frames
• CPC Class Codes: G02F 1/133382 Heating or cooling of liquid crystal cells other than for activation, e.g. circuits or arrangements for temperature control, stabilisation or uniform distribution over the cell
• CPC Class Codes: G06F 1/1601 Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays constructional details related to flat displays integrated in a portable computer, e.g. laptop, handheld computer G06F1/1637; constructional details related to television receivers H04N5/64
• CPC Class Codes: G06F 1/20 Cooling means
• CPC Class Codes: H05K 1/0203 Cooling of mounted components H05K1/0272 takes precedence
• CPC Class Codes: H05K 5/0004 comprising several parts forming a closed casing
• CPC Class Codes: H05K 5/0017 with operator interface units
• CPC Class Codes: H05K 5/02 Details
• CPC Class Codes: H05K 5/03 Covers
• CPC Class Codes: H05K 7/20963 Heat transfer by conduction from internal heat source to heat radiating structure H05K7/20972 takes precedence

Abstract

A display device according to one embodiment of the present invention includes a display module, and a heat dissipation unit which is coupled to a rear side of the display module. The heat dissipation unit includes a core part including a plurality of hollow polygonal columns extending in a front/back direction, a front sheet which is coupled to a front portion of the core part, and a rear sheet which is coupled to a rear portion of the core part. The core part has a thickness of about 40% to about 60% in the front/back direction with respect to a total thickness of the heat dissipation unit in the front/back direction.

Claims

1. A display device comprising:

a display module;

a heat dissipation unit coupled to a rear side of the display module;

a mid-cabinet disposed between the display module and the heat dissipation unit;

a PCB plate coupled to a rear portion of the heat dissipation unit; and

a rear cover coupled to a rear portion of the PCB plate to cover the PCB plate,

wherein the heat dissipation unit comprises;

a core part comprising a plurality of hollow polygonal columns extending in a front-to-rear direction;

a front sheet coupled to a front portion of the core part; and

a rear sheet coupled to a rear portion of the core part,

wherein the heat dissipation unit has an edge portion that is stepped backward from a front surface thereof to define a mid-cabinet accommodation part, and

wherein a portion of the mid-cabinet is disposed in the mid-cabinet accommodation part.

2. The display device according to claim 1, wherein the core part has a honeycomb structure comprising a plurality of hollow hexagonal columns.

3. The display device according to claim 1, wherein the mid-cabinet comprises:

an edge part extending in the front-to-rear direction from the outside of each of the display module and the heat dissipation unit; and

an insertion part protruding and extending inward from the edge part,

wherein the insertion part is inserted into the mid-cabinet accommodation part.

4. The display device according to claim 3, wherein the edge part further protrudes in the front-to-rear direction than the insertion part.

5. The display device according to claim 1, wherein the front sheet comprises:

a first bent part that is bent to extend rearward from an end of the core part; and

a second bent part that is bent to extend outward from a rear end of the first bent part,

wherein the mid-cabinet accommodation part is defined by a rear surface of the display module, the first bent part and the second bent part.

6. The display device according to claim 1, further comprising an end block,

wherein ends of the front and rear sheets outwardly extend longer than an end of the core part, and

wherein the end block is inserted in-between the front sheet and the rear sheet from an outside of the core part.

7. The display device according to claim 6, wherein the end block comprises:

an inner part; and

an outer part disposed outside the inner part, the outer part having a front surface disposed behind a front surface of the inner part to establish a stepped portion,

wherein the mid-cabinet accommodation part is defined in a front side of the outer part.

8. The display device according to claim 1, wherein the display module comprises:

a display panel; and

a back cover attached to a rear surface of the display panel,

wherein the display panel comprises an organic light-emitting display (OLED) panel.

9. The display device according to claim 1, wherein at least one of the front and rear sheets comprises a metal material.

10. The display device according to claim 1, wherein the rear sheet is configured to be thicker in the front-to-rear direction than the front sheet is.

11. The display device according to claim 1, wherein a ratio of a thickness of the core part with respect to a total thickness of the heat dissipation unit in the front-to-rear direction is 40% to 60%.