Display device

1. A display device comprising:

a display panel;

a vapor chamber positioned behind the display panel;

a board, which is positioned behind the vapor chamber and is coupled to the vapor chamber; and

an adhesive member disposed between the display panel and the vapor chamber so as to be coupled thereto,

wherein the vapor chamber comprises:

a first plate, which defines a front surface thereof and faces the display panel;

a second plate, which defines a rear surface thereof and is coupled to the first plate; and

fluid flowing in a space defined between the first plate and the second plate,

wherein the first plate comprises a coupler, which is depressed rearwards from the first plate and to which the adhesive member is coupled,

wherein the second plate comprises a plurality of recesses, which are depressed forwards from the second plate and are spaced apart from each other, and

wherein the space is defined between a remaining region of the second plate excluding the plurality of recesses and the first plate.

2. The display device according to claim 1 , wherein the vapor chamber covers an entire area of a rear surface of the display panel.

3. The display device according to claim 1 , wherein the coupler comprises a plurality of couplers, and the adhesive member comprises a plurality of adhesive members, which are respectively coupled to the plurality of couplers.

4. The display device according to claim 1 , wherein a front surface of the first plate is positioned between a front surface and a rear surface of the adhesive member so as to be spaced apart from a rear surface of the display panel.

5. The display device according to claim 1 , wherein a front surface of the first plate is flush with a front surface of the adhesive member so as to be in contact with a rear surface of the display panel.

6. The display device according to claim 1 , wherein the adhesive member comprises a phase change material (PCM).

7. The display device according to claim 1 , wherein the first plate is configured to be flat with respect to the display panel.

8. The display device according to claim 1 , wherein the board comprises a plurality of electronic elements mounted thereon, and

wherein the second plate further comprises:

a lower plate facing the board; and

an upper plate extending from the lower plate in a vertical direction.

9. The display device according to claim 8 , wherein the board is positioned adjacent to a lower end of the vapor chamber, and the lower plate is positioned under the upper plate, and

wherein the plurality of recesses comprises:

a plurality of first recesses, which are positioned at the lower plate and each of which has a first shape; and

a plurality of second recesses, which are positioned at the upper plate and each of which has a second shape different from the first shape.

10. The display device according to claim 9 , wherein the plurality of first recesses are spaced apart from each other in a lateral direction and extend in a vertical direction so as to partition the space into a plurality of spaces.

11. The display device according to claim 10 , wherein each of the plurality of first recesses is positioned such that one end thereof is close to a lower end of the lower plate and a remaining end thereof is close to an upper end of the lower plate.

12. The display device according to claim 10 , wherein the plurality of first recesses are spaced apart from each other in the vertical direction and in the lateral direction by a distance less than a length of each of the first recesses.

13. The display device according to claim 10 , wherein each of the plurality of first recesses has a rectangular rear surface and each of the plurality of second recesses has a circular rear surface.

14. The display device according to claim 1 , wherein the vapor chamber further comprises a porous sheet positioned between the plurality of recesses and the first plate.