Display device and manufacturing method thereof

1. A display device comprising;

a display panel;

a middle frame comprising a rear-surface portion located in a rear of the display panel and a support portion configured to form a sidewall on one side edge of the rear-surface portion;

a guide panel coupled to the middle frame so as to surround an outer periphery of a side surface of the middle frame;

a seating portion provided on the guide panel so as to form a portion of a side surface of the guide panel and surround the support portion;

a source PCB seated on an outer surface of the seating portion;

a member layer configured to connect one side of the display panel and the source PCB to each other; and

a top case configured to cover the seating portion and the side surface of the guide panel and to, along with the source PCB, define a space.

2. The display device according to claim 1 , wherein outer surfaces of the support portion and the seating portion are formed perpendicular to the display panel.

3. The display device according to claim 1 , wherein the guide panel further comprises a rib formed on the outer surface of the seating portion so that one side edge of the source PCB is seated on the rib.

4. The display device according to claim 1 , further comprising a heat dissipation pad having one surface in contact with a portion of an inner surface of the top case and a remaining surface in contact with a portion of an outer surface of the member layer.

5. The display device according to claim 1 , wherein the support portion comprises:

an inner sidewall configured to extend forward from the one side edge of the middle-frame rear-surface portion;

a flange configured to extend outward from a front end of the inner sidewall;

an outer sidewall configured to extend rearward from an outer end of the flange; and

a fixing bracket configured to extend from a first position on a rear end of the outer sidewall and to be bent inward so as to be supported by a second area of the middle-frame rear-surface portion.

6. The display device according to claim 1 , wherein the middle frame is integrally formed from a single material.

7. The display device according to claim 1 , wherein a fixing bracket and a second area of the middle-frame rear-surface portion are fixed by a compression molding process.

8. The display device according to claim 7 , wherein the compression molding process comprises a punching process having formed fastening holes in the fixing bracket and the second area of the middle-frame rear-surface portion.

9. The display device according to claim 8 , further comprising a screw coupled into the fastening holes so as to fasten the fixing bracket and the middle-frame rear-surface portion to each other.

10. The display device according to claim 1 , further comprising an opening formed at a position of an outer sidewall in an area corresponding to a shape of a fixing bracket.

11. The display device according to claim 1 , further comprising an expansion bracket configured to extend outward from a first area comprising a position on a rear end of an outer sidewall of the support portion so as to connect a fixing bracket and the outer sidewall to each other.

12. The display device according to claim 11 , further comprising:

first slits formed in opposite boundaries of the first area on the rear end of the outer sidewall; and

a boundary slit formed in a boundary between the fixing bracket and the outer sidewall.

13. The display device according to claim 11 , wherein the fixing bracket and the expansion bracket are located in the same plane.

14. The display device according to claim 1 , wherein a fixing bracket and an outer sidewall of the support portion are perpendicular to each other, a flange and an inner sidewall of the support portion are perpendicular to each other, the inner sidewall and the middle frame are perpendicular to each other, and the flange and the outer sidewall are perpendicular to each other.