Light emitting device and fabricating method thereof

1. A light emitting device comprising:

a substrate;

a first electrode on the substrate;

a metal member on the first electrode, the metal member having a cavity;

a first insulating layer on the metal member, the first insulating layer exposing the cavity therethrough;

a bar-type LED having a first end portion and a second end portion, the first end portion being electrically connected to the first electrode in the cavity, the second end portion protruding outside of the cavity; and

a second electrode on the first insulating layer, the second electrode being connected to the second end portion of the bar-type LED.

2. The light emitting device of claim 1 , wherein a width of an inside portion of the cavity is greater than a width of an entrance to the cavity.

3. The light emitting device of claim 1 , wherein a thickness of the metal member is less than a length of the bar-type LED.

4. The light emitting device of claim 1 , wherein the cavity in the metal member exposes the first electrode.

5. The light emitting device of claim 1 , further comprising a plurality of bar-type LEDs in the cavity.

6. The light emitting device of claim 1 , wherein the first insulating layer has an inclined surface inclined with respect to the cavity, and

wherein the bar-type LED leans obliquely onto the inclined surface of the first insulating layer.

7. The light emitting device of claim 6 , wherein one pixel region comprises a plurality of bar-type LEDs, and

wherein the bar-type LEDs in the one pixel region are inclined in the same direction.

8. The light emitting device of claim 6 , wherein one pixel region comprises a plurality of bar-type LEDs, and

wherein the bar-type LEDs in the one pixel region are inclined in directions different from each other.

9. The light emitting device of claim 1 , further comprising a connecting member between the first end portion of the bar-type LED in the cavity and the first electrode.

10. The light emitting device of claim 1 , further comprising a second insulating layer between the first insulating layer and the second electrode,

wherein the second insulating layer has a contact opening at where the second end portion of the bar-type LED and the second electrode are electrically connected to each other.

11. The light emitting device of claim 1 , further comprising alignment lines at both sides of the first electrode.

12. A method of fabricating a light emitting device, the method comprising:

forming a first electrode on a substrate;

forming a metal member on the first electrode;

forming a first insulating layer over the metal member,

removing a portion of the first insulating layer to expose the metal member;

forming a cavity in the metal member;

arranging a bar-type LED such that a first end portion of the bar-type LED is in the cavity and electrically connected to the first electrode; and

forming a second electrode on the first insulating layer, the second electrode being electrically connected to a second end portion of the bar-type LED.

13. The method of claim 12 , wherein the cavity in the metal member has a shape in which a width of its inside portion is larger than a width of its entrance.

14. The method of claim 13 , wherein the cavity is formed by isotropic etching.

15. The method of claim 12 , wherein a thickness of the metal member is less than a length of the bar-type LED.

16. The method of claim 12 , wherein the first insulating layer has an inclined surface inclined with respect to the cavity, and

wherein the bar-type LED leans obliquely onto the inclined surface of the first insulating layer.

17. The method of claim 12 , wherein the arranging of the bar-type LED comprises:

providing an LED solution comprising a plurality of bar-type LEDs on the first insulating layer; and

after the providing the LED solution, cleaning the substrate in one direction.

18. The method of claim 12 , further comprising forming a connecting member between the first end portion of the bar-type LED that is in the cavity and the first electrode.

19. The method of claim 18 , wherein the forming of the connecting member comprises:

forming a connecting member layer on the first insulating layer and in the cavity; and

etching the connecting member layer such that a portion of the connecting member layer remains in the cavity.

20. The method of claim 12 , further comprising forming a second insulating layer having a contact opening on the first insulating layer, the second end portion of the bar-type LED and the second electrode being electrically connected to each other at the contact opening.