Display device having reflective structure reflecting light from light emitting diode

1 . A display device comprising:

first banks disposed on a substrate and spaced apart from each other in a first direction;

a first electrode and a second electrode disposed on the first banks;

a light emitting diode disposed between the first electrode and the second electrode; and

at least one reflective structure disposed between the first electrode and the second electrode and spaced apart from the light emitting diode, wherein the reflective structure does not emit light,

wherein

the light emitting diode and the at least one reflective structure are spaced apart from each other in a second direction intersecting the first direction; and

the reflective structure comprises an undoped core layer and a reflective conductive pattern directly contacting and entirely covering an outer surface of the undoped core layer and entirely covering at least an end portion of the undoped core layer.

2 . The display device of claim 1 , wherein

an end portion of the light emitting diode is electrically connected to the first electrode, and

another end portion of the light emitting diode is electrically connected to the second electrode.

3 . The display device of claim 2 , further comprising:

a first insulating layer disposed on the first electrode and the second electrode,

wherein the first insulating layer overlaps a portion of the first electrode and a portion of the second electrode.

4 . The display device of claim 3 , further comprising:

a first contact electrode and a second contact electrode disposed on the first insulating layer, wherein

the first contact electrode electrically connects the light emitting diode to the first electrode, and

the second contact electrode electrically connects the light emitting diode to the second electrode.

5 . The display device of claim 4 , wherein

the first contact electrode electrically contacts the end portion of the light emitting diode, and

the second contact electrode electrically contacts the another end portion of the light emitting diode.

6 . The display device of claim 5 , wherein the light emitting diode has a shape extended in the first direction and emits light.

7 . The display device of claim 6 , wherein each of the first electrode and the second electrode includes a reflective conductive material.

8 . The display device of claim 7 , wherein the reflective conductive material includes Ag, Cu or Al.

9 . The display device of claim 7 , wherein each of the first electrode and the second electrode reflects the light emitted from the light emitting diode toward an upper direction of the display device.

10 . The display device of claim 6 , wherein

an end portion of the at least one reflective structure contacts the first electrode, and

another end portion of the at least one reflective structure contacts the second electrode.

11 . The display device of claim 10 , wherein

the first contact electrode electrically connects the at least one reflective structure to the first electrode, and

the second contact electrode contacts the at least one reflective structure and electrically contacts the second electrode.

12 . The display device of claim 11 , wherein

the first contact electrode contacts an end portion of the at least one reflective structure, and

the second contact electrode contacts the another end portion of the at least one reflective structure.

13 . The display device of claim 12 , wherein the at least one reflective structure has a shape extended in the first direction.

14 . The display device of claim 13 , wherein

the at least one reflective structure includes a plurality of reflective structures,

the plurality of reflective structures are spaced apart from each other, and

the light emitting diode is disposed between the reflective structures.

15 . The display device of claim 13 , wherein the at least one reflective structure reflects the light emitted from the light emitting diode toward an upper direction of the display device.

16 . A display device comprising:

first banks disposed on a substrate and spaced apart from each other in a direction;

a first electrode and a second electrode disposed on the first banks; and

at least one reflective structure disposed between the first electrode and the second electrode,

wherein the at least one reflective structure does not emit light, has a shape extended in the direction, and includes:

an undoped core layer comprising an outer surface and an end portion;

a reflective conductive pattern directly contacting and entirely surrounding the outer surface and the end portion of the undoped core layer; and

an insulating film surrounding an outer surface of the reflective conductive pattern.

17 . The display device of claim 16 , wherein

the reflective conductive pattern includes Ag, Cu, or Al, and

the undoped core layer includes AlGalnN, GaN, AIGaN, InGaN, AIN, InN, or Si.

18 . The display device of claim 16 , wherein

the undoped core layer further includes:

another end portion positioned at another side in the direction, and

the reflective conductive pattern overlaps the end portion and the another end portion of the undoped core layer.

19 . The display device of claim 18 , wherein the undoped core layer includes a glass material.

20 . The display device of claim 1 , wherein the at least one reflective structure reflects light emitted by the light emitting diode in the second direction toward a third direction intersecting the first direction and the second direction.

21 . The display device of claim 1 , wherein the at least one reflective structure comprises an insulating film directly contacting and entirely covering an outer surface of the reflective conductive pattern along an entire length of the undoped core layer and directly contacting and entirely covering a first end of the reflective conductive pattern.

22 . A display device comprising:

first banks disposed on a substrate and spaced apart from each other in a first direction;

a first electrode and a second electrode disposed on the first banks;

a light emitting diode disposed between the first electrode and the second electrode; and

at least one reflective structure disposed between the first electrode and the second electrode and spaced apart from the light emitting diode, wherein the reflective structure does not emit light,

wherein

the light emitting diode and the at least one reflective structure are spaced apart from each other in a second direction intersecting the first direction; and

the at least one reflective structure comprises a core layer formed without intentional dopants and a reflective conductive pattern directly contacting and entirely surrounding an outer surface of the core layer and entirely covering at least a first end portion of the core layer; and

an insulating film directly contacting and entirely surrounding an outer surface of the reflective conductive pattern along an entire length of the core layer and entirely covering a first end of the reflective conductive pattern.

23 . The display device of claim 22 , wherein the core layer consists of one or more materials selected from the group consisting of AlGalnN, GaN, AIGaN, InGaN, AIN, InN, and Si.