Patent ID: 8729583

Claim:
A semiconductor light-emitting device comprising: a first semiconductor layer of a first conductivity type, the first semiconductor layer having a first major surface provided with a depression, the depression including a bottom face and a side face, the first semiconductor layer having a first surface asperity including a bottom face asperity provided on the bottom face and a side face asperity provided on the side face; a second semiconductor layer of a second conductivity type provided on an opposite side of the first semiconductor layer from the first major surface; a light-emitting layer provided between the first semiconductor layer and the second semiconductor layer; a third semiconductor layer, the first semiconductor layer being disposed between the third semiconductor layer and the light-emitting layer, the third semiconductor layer having an impurity concentration lower than an impurity concentration in the first semiconductor layer, and including an opening continuing the depression; and a first electrode in contact with the first surface asperity through the opening, the first electrode being reflective to emission light emitted from the light-emitting layer, wherein a bottom interface between the first electrode and the bottom face has a shape along the bottom face asperity, a side interface between the first electrode and the side face has a shape along the side face asperity, a width of the depression along a first direction parallel to the first major surface increases along a second direction from the first semiconductor layer to the third semiconductor layer to cause the side interface and to be inclined with respect to the first major surface.