Display device

1 . A display device comprising:

a flexible substrate configured to be stretchable, the flexible substrate having a first area, a second area, and a third area;

a plurality of pixels disposed in the first area of the flexible substrate;

a plurality of heat transfer patterns disposed in the first area of the flexible substrate and configured to overlap the plurality of pixels, respectively;

a plurality of connection lines disposed in the second area of the flexible substrate and coupled to the plurality of pixels, respectively; and

a plurality of heat transfer lines disposed in the second area of the flexible substrate and coupled to the plurality of heat transfer patterns, respectively.

2 . The display device of claim 1 ,

wherein the plurality of heat transfer patterns comprises:

inner heat transfer patterns disposed inside each of the plurality of pixels; and

outer heat transfer patterns disposed outside each of the plurality of pixels.

3 . The display device of claim 2 ,

wherein the outer heat transfer patterns comprise:

a first outer heat transfer pattern disposed in parallel with each of the plurality of pixels; and

a plurality of second outer heat transfer patterns disposed to be perpendicular to each of the plurality of pixels.

4 . The display device of claim 3 ,

further comprising:

a heat transfer gel disposed between the first outer heat transfer pattern and each of the plurality of pixels.

5 . The display device of claim 3 ,

wherein the first outer heat transfer pattern is in contact with at least one of the plurality of second outer heat transfer patterns.

6 . The display device of claim 3 ,

wherein the outer heat transfer patterns further comprise a third outer heat transfer pattern disposed in parallel with each of the plurality of pixels and configured to couple the plurality of second outer heat transfer patterns.

7 . The display device of claim 3 ,

wherein the first outer heat transfer pattern is a plate shape.

8 . The display device of claim 3 ,

wherein the first outer heat transfer pattern is a matrix shape.

9 . The display device of claim 2 ,

wherein each of the plurality of pixels comprises:

a light-emitting element;

a transistor disposed below the light-emitting element and comprising a gate electrode, a source electrode, a drain electrode, and an active layer, the transistor being configured to operate the light-emitting element; and

a shield metal layer disposed below the transistor and configured to protect the transistor.

10 . The display device of claim 9 ,

wherein the inner heat transfer patterns comprise a first inner heat transfer pattern disposed on the same layer as the shield metal layer and disposed to be in contact with the outer heat transfer pattern through a first insulation contact hole.

11 . The display device of claim 10 ,

wherein the inner heat transfer patterns comprise a second inner heat transfer pattern disposed on the same layer as the gate electrode and disposed to be in contact with the first inner heat transfer pattern through a second insulation contact hole.

12 . The display device of claim 11 ,

wherein the inner heat transfer patterns further comprise a third inner heat transfer pattern disposed on a layer above the gate electrode and disposed to be in contact with the second inner heat transfer pattern through a third insulation contact hole.

13 . The display device of claim 1 ,

further comprising:

a rigid substrate disposed on the flexible substrate,

wherein the rigid substrate comprises at least one trench corresponding to the first area, and

wherein each of the plurality of pixels is disposed in the at least one trench.

14 . The display device of claim 1 ,

further comprising:

a heat transfer gel disposed between the plurality of connection lines and the plurality of heat transfer lines.

15 . The display device of claim 1 ,

further comprising:

a voltage sensing circuit configured to measure a voltage of any one of the plurality of heat transfer patterns; and

a voltage feedback circuit configured to provide feedback on the measured voltage and apply a feedback voltage to another of the plurality of heat transfer patterns.

16 . The display device of claim 15 ,

further comprising:

a plurality of power patterns disposed in the third area of the flexible substrate and connected to the plurality of heat transfer patterns,

wherein the voltage sensing circuit is coupled to any one of the plurality of power patterns, and

wherein the voltage feedback circuit is coupled to another of the plurality of power patterns.

17 . A display device comprising:

a flexible substrate configured to be stretchable;

a plurality of pixels on the flexible substrate;

a plurality of heat transfer patterns on the flexible substrate and configured to overlap the plurality of pixels, respectively;

a plurality of connection lines on the flexible substrate and coupled to the plurality of pixels, respectively; and

a plurality of heat transfer lines on the flexible substrate and coupled to the plurality of heat transfer patterns, respectively.

18 . The display device of claim 17 , wherein the plurality of heat transfer patterns comprises:

inner heat transfer patterns disposed inside each of the plurality of pixels; and

outer heat transfer patterns disposed outside each of the plurality of pixels.

19 . The display device of claim 18 , wherein the outer heat transfer patterns comprise:

a first outer heat transfer pattern on the flexible substrate; and

a plurality of second outer heat transfer patterns protruding towards the flexible substrate.