Light-emitting element
A light-emitting element includes a semiconductor laminated structure including a first semiconductor layer, a light-emitting layer and a second semiconductor layer, an insulation layer provided on the semiconductor laminated structure, a first wiring including a first vertical conducting portion and a first planar conducting portion and being electrically connected to the first semiconductor layer, the first vertical conducting portion extending inside the insulation layer, the light-emitting layer and the second semiconductor layer in a vertical direction and the first planar conducting portion extending inside the insulation layer in a planar direction, and a second wiring including a second vertical conducting portion and a second planar conducting portion and being electrically connected to the second semiconductor layer, the second vertical conducting portion extending inside the insulation layer in a vertical direction and the second planar conducting portion extending inside the insulation layer in a planar direction.
1. A light-emitting element, comprising:
a semiconductor laminated structure comprising a nitride compound semiconductor, a first semiconductor layer of a first conductivity type, a light-emitting layer and a second semiconductor layer of a second conductivity type different from the first conductivity type;
an insulation layer provided on the semiconductor laminated structure;
a first wiring comprising a first vertical conducting portion and a first planar conducting portion, the first wiring being electrically connected to the first semiconductor layer, the first vertical conducting portion extending inside the insulation layer, the light-emitting layer and the second semiconductor layer in a vertical direction and the first planar conducting portion extending inside the insulation layer in a planar direction; and
a second wiring comprising a second vertical conducting portion and a second planar conducting portion, the second wiring being electrically connected to the second semiconductor layer, the second vertical conducting portion extending inside the insulation layer in a vertical direction and the second planar conducting portion extending inside the insulation layer in a planar direction.
2. The light-emitting element according to claim 1 , further comprising:
a first bonding electrode provided on the insulation layer and electrically connected to the first wiring; and
a second bonding electrode provided on the insulation layer and electrically connected to the second wiring.
3. The light-emitting element according to claim 2 , wherein a reflective layer for reflecting light emitted from the light-emitting layer is included inside the insulation layer.
4. The light-emitting element according to claim 3 , wherein the first and second planar conducting portions are provided on the same plane.
5. The light-emitting element according to claim 4 , wherein the first and second bonding electrodes are provided on the same plane.
6. The light-emitting element according to claim 5 , further comprising:
a first ohmic electrode being in ohmic contact with the first semiconductor layer;
a transparent conductive layer being in ohmic contact with the second semiconductor layer; and
a second ohmic electrode being in ohmic contact with the transparent conductive layer,
wherein the first wiring is electrically connected to the first ohmic electrode; and
the second wiring is electrically connected to the second ohmic electrode.
7. The light-emitting element according to claim 6 wherein a material comprising the first ohmic electrode is the same as a material comprising the second ohmic electrode.
8. The light-emitting element according to claim 7 , wherein a material comprising the first wiring is the same as a material comprising the second wiring.
9. The light-emitting element according to claim 8 , wherein the first and second bonding electrodes each have notches in plan view.
10. The fight-emitting element according to claim 3 , wherein the first and second planar conducting portions are provided on different planes.
11. The light-emitting element according to claim 10 , wherein the first and second bonding electrodes are provided on the same plane.
12. The light-emitting element according to claim 11 , further comprising:
a first ohmic electrode being in ohmic contact with the first semiconductor layer;
a transparent conductive layer being in ohmic contact with the second semiconductor layer; and
a second ohmic electrode being in ohmic contact with the transparent conductive layer,
wherein the first wiring is electrically connected to the first ohmic electrode; and the second wiring is electrically connected to the second ohmic electrode.
13. The light-emitting element according to claim 12 wherein a material comprising the first ohmic electrode is the same as a material comprising the second ohmic electrode.
14. The light-emitting element according to claim 13 , wherein a material comprising the first wiring is the same as a material comprising the second wiring.
15. The light-emitting element according to claim 14 , wherein the first and second bonding electrodes each have notches in plan view.
16. The light-emitting element according to claim 2 , wherein at least one of the first bonding electrode and the second bonding electrode comprises a circular shape.
17. The light-emitting element according to claim 2 , wherein at least one of the first bonding electrode and the second bonding electrode comprises a polygonal shape.
18. The light-emitting element according to claim 2 , wherein an area of the first bonding electrode is greater than an area of the second bonding electrode.
19. The light-emitting element according to claim 1 , wherein the insulation layer comprises an upper insulation layer and a lower insulation layer.
20. The light-emitting element according to claim 1 , wherein the first wiring and the second wiring are electrically isolated from one another.