Display device

Patent metadata

Field	Value
Publication number	US-11013154-B2
Application number	US-201916706417-A
Country	US
Kind code	B2
Filing date	Dec 6, 2019
Priority date	Dec 18, 2018
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

Circuit films, a printed circuit board (PCB), and the like, are connected to a display panel. First and second heat dissipation members are coupled to a rear surface of the display panel to support and protect the circuit films, the PCB, and the like, while dissipating heat from driver ICs and the like.

First claim

What is claimed is:

1. A display device comprising:
a display panel;
a plurality of circuit films disposed on both sides of the display panel, extending in an edge-to-edge direction to be spaced apart from each other, wherein each of the plurality of circuit films has one side connected to an edge of the display panel and another side connected to a printed circuit board such that the printed circuit board is disposed on a rear surface of the display panel;
a first heat dissipation member having a hollow structure with an internal space therein and coupled to the rear surface of the display panel; and
a second heat dissipation member coupled to a rear surface of the first heat dissipation member and on which the printed circuit board is disposed.

2. The display device according to claim 1 , wherein the rear surface of the display panel and a front surface of the first heat dissipation member are attached to each other by means of an adhesive member.

3. The display device according to claim 1 , wherein the first heat dissipation member is provided with a front plate, a rear plate, and at least one partition wall to connect the front plate and the rear plate of the first heat dissipation member.

4. The display device according to claim 3 , wherein in the first heat dissipation member, the internal space is defined by the front plate, the rear plate, and the partition wall such that the internal space is open through an upper side of the first heat dissipation member.

5. The display device according to claim 1 , further comprising:
a bottom cover, wherein the bottom cover includes a side support portion disposed on a lateral side of the display panel, and a rear support portion disposed on the rear surface of the display panel, wherein the circuit film is disposed on a front surface of the rear support portion.

6. The display device according to claim 5 , wherein a protrusion is provided on a lower side of the first heat dissipation member such that the protrusion protrudes toward the bottom cover, and the rear support portion is provided with a corresponding stepped portion protruding toward the first heat dissipation member at a position corresponding to the protrusion, wherein a driver integrated circuit of the circuit film is disposed and supported between the protrusion and the stepped portion.

7. The display device according to claim 5 , wherein the second heat dissipation member includes a first support disposed on the rear surface of the first heat dissipation member, and a second support bent on an upper side of the first support so that the printed circuit board is inserted into the bent portion of the second support.

8. The display device according to claim 7 , wherein the rear surface of the first heat dissipation member and a front surface of the first support are attached to each other by means of an adhesive member.

9. The display device according to claim 7 , wherein the second support is provided with a stepped support portion which is bent on an end side thereof to support a level shifter integrated circuit of the printed circuit board.

10. The display device according to claim 7 , wherein a support edge protrusion is provided on a lower side of the first support such that the support edge protrusion is disposed between the circuit films to support a lower side of the printed circuit board.

11. The display device according to claim 1 , wherein the first heat dissipation member is provided on the rear surface thereof with at least one elastic protrusion protruding toward the second heat dissipation member, and the second heat dissipation member is provided with an insertion hole into which the elastic protrusion is elastically deformed and inserted.

12. The display device according to claim 11 , wherein the elastic protrusion includes a connecting portion connected to the rear surface of the first heat dissipating member and supported by an inner surface of the insertion hole, and an elastic support portion extending horizontally from an end portion of the connecting portion such that a width thereof is greater than a diameter of the insertion hole, such that the elastic support portion is supported by a rear surface of the second heat dissipation member.

13. The display device according to claim 1 , wherein the first heat dissipation member and the second heat dissipation member are coupled together by means of a fastening member.

14. The display device according to claim 7 , wherein an extended support portion is provided on a lower side of the first support such that the extended support portion extends in a direction of the side support portion, wherein a driver integrated circuit of the circuit film is supported between a stepped portion of the bottom cover and the extended support portion.

15. The display device according to claim 14 , wherein a heat dissipation pad is disposed between the driver integrated circuit of the circuit film and the extended support portion.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Misook
• Jung Daeyoung

Classifications

• H10K59/8794

  Arrangements for heating and cooling · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• G02F1/1345

  Conductors connecting electrodes to cell terminals · CPC title

• G02F1/133382 Primary

  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 title

• H05K7/20963 Primary

  Heat transfer by conduction from internal heat source to heat radiating structure (H05K7/20972 takes precedence) · CPC title