Display device

• US 10,359,817 B2
• Filed: 04/27/2017
• Issued: 07/23/2019
• 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 M
• Assistant Examiner(s): Ahmad, Yahya
• Application Number:
  US15/499,587
• Publication Number:
  US 20170228001A1
• Time in Patent Office: 817 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 module cover disposed behind the display module;

an adhesion layer disposed between the display module and the module cover to attach the module cover to a rear side of the display module;

a mid-cabinet disposed at an outside of an edge of the display module and the module cover;

a PCB plate coupled to a rear surface of the module cover; and

a rear cover disposed on a rear portion of the PCB plate to protect the PCB plate,

wherein the module cover comprises;

a front sheet attached to the adhesion layer;

a rear sheet contacting the PCB plate; and

a core part disposed between the front sheet and the rear sheet,

wherein the module cover has a stepped portion to define an accommodation part to accommodate at least a portion of the mid-cabinet, and

wherein the core part includes;

a plurality of contact portions to contact the front sheet and the rear sheet; and

a plurality of hollow portions which are filled with air.

2. The display device according to claim 1, wherein the plurality of contact portions is formed such that each of the plurality of hollow portions has a honeycomb structure.

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

an edge part extending to cover the edge of the display module and the module cover; and

an insertion part protruding from the edge part and extending inside the accommodation part.

4. The display device according to claim 1, wherein the front sheet is rearwardly bent to define the stepped portion, and

wherein the stepped portion includes:

a first bent portion which is perpendicular to the front sheet; and

a second bent portion which is parallel to the rear sheet to be attached to the rear sheet.

5. The display device according to claim 1, further comprising an end block coupled to a side edge of the core part,

wherein ends of the front and rear sheets extend outwardly further 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.

6. The display device according to claim 5, 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, and

wherein the accommodation part is defined at a front side of the outer part.

7. 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.

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

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 a front-to-rear direction is 40% to 60%.