Semiconductor light emitting element, and light emitting device having conductive vias of first electrode structure disposed below second pad electrode of second electrode structure
A semiconductor light emitting element includes a light emitting structure including a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer. A first electrode structure includes a conductive via connected to the first conductivity type semiconductor layer. A second electrode structure is connected to the second conductivity type semiconductor layer. An insulating part having an open region exposes part of the first and second electrode structures while covering the first and second electrode structures. First and second pad electrodes are formed on the first and second electrode structures exposed by the open region and are connected to the first and second electrode structures.
1. A semiconductor light emitting element comprising:
a light emitting structure including a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer;
a first electrode structure including a plurality of conductive vias penetrating the second conductivity type semiconductor layer and the active layer, the plurality of conductive vias connected to the first conductivity type semiconductor layer;
a second electrode structure connected to the second conductivity type semiconductor layer;
an insulating part covering the first and second electrode structures and having an open region exposing part of the first and second electrode structures; and
first and second pad electrodes formed on the first and second electrode structures exposed by the open region, respectively, the first and second pad electrodes connected to the first and second electrode structures, respectively,
wherein at least one of the plurality of conductive vias is disposed below the second pad electrode and is electrically insulated from the second pad electrode by the insulating part.
2. The semiconductor light emitting element of claim 1 , wherein the first and second pad electrodes have substantially the same area.
3. The semiconductor light emitting element of claim 1 , wherein the insulating part is disposed between the second pad electrode and the first electrode structure.
4. The semiconductor light emitting element of claim 1 , wherein the insulating part fills spaces between the plurality of conductive vias and the light emitting structure.
5. The semiconductor light emitting element of claim 1 , wherein the first and second electrode structures are disposed in the same direction.
6. The semiconductor light emitting element of claim 1 , wherein the first electrode structure is surrounded by the insulating part and the first electrode structure is electrically separated from the active layer and the second conductivity type semiconductor layer.
7. The semiconductor light emitting element of claim 1 , wherein at least part of the second electrode structure includes a light reflective material.
8. The semiconductor light emitting element of claim 1 , wherein at least part of the second electrode structure surrounds at least one of the plurality of conductive vias.
9. The semiconductor light emitting element of claim 1 , further comprising a substrate having the first conductivity type semiconductor layer, the active layer and the second conductivity type semiconductor layer sequentially formed thereon.
10. The semiconductor light emitting element of claim 9 , wherein
the substrate includes first and second main surfaces facing each other,
the light emitting structure is disposed on the first main surface, and
wherein the first main surface of the substrate is uneven.
11. The semiconductor light emitting element of claim 10 , wherein the uneven structure formed on the substrate includes a convex portion having an inclined lateral surface.
12. A light emitting device comprising:
a mounting substrate; and
a semiconductor light emitting element disposed on the mounting substrate and emitting light when an electrical signal is applied thereto,
wherein the semiconductor light emitting element includes:
a light emitting structure including a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer;
a first electrode structure including a plurality of conductive vias penetrating the second conductivity type semiconductor layer and the active layer, the plurality of conductive vias connected to the first conductivity type semiconductor layer;
a second electrode structure connected to the second conductivity type semiconductor layer;
an insulating part covering the first and second electrode structures and having an open region exposing part of the first and second electrode structures; and
first and second pad electrodes formed on the first and second electrode structures exposed by the open region, respectively, the first and second pad electrodes connected to the first and second electrode structures, respectively,
wherein at least one of the plurality of conductive vias is disposed below the second pad electrode and is electrically insulated from the second pad electrode by the insulating part.
13. The light emitting device of claim 12 , wherein the mounting substrate is a circuit substrate or a lead frame.
14. The light emitting device of claim 12 , wherein the first and second pad electrodes are disposed in a direction toward the mounting substrate.
15. A semiconductor light emitting element, comprising:
a light emitting structure including a first conductivity type semiconductor layer, an active layer and a second conductivity type semiconductor layer;
a first electrode structure electrically connected to the first conductivity type semiconductor layer;
a second electrode structure connected to the second conductivity type semiconductor layer;
a plurality of conductive vias penetrating the second conductivity type semiconductor layer and the active layer, the plurality of conductive vias connected to the first conductivity type semiconductor layer;
an insulating part covering the first and second electrode structures and having an open region exposing part of the first and second electrode structures; and
first and second pad electrodes connected to the first and second electrode structures, respectively, and exposed by the open region,
wherein at least one of the plurality of conductive vias is disposed below the second pad electrode and is electrically insulated from the second pad electrode by the insulating part.
16. The semiconductor light emitting element of claim 15 , wherein the first and second pad electrodes have substantially the same area.
17. The semiconductor light emitting element of claim 15 , wherein the insulating part fills spaces between the plurality of conductive vias and the light emitting structure.
18. The semiconductor light emitting element of claim 15 , further comprising a substrate having the first conductivity type semiconductor layer, the active layer and the second conductivity type semiconductor layer sequentially formed on a surface thereof.
19. The semiconductor light emitting element of claim 1 , wherein two or more conductive vias of the plurality of conductive vias are connected to one another by an electrode connection part.