Semiconductor light emitting device

摘要

Disclosed are a semiconductor light emitting device. The semiconductor light emitting device comprises a light emitting structure comprising a III-V group compound semiconductor, a reflective layer comprising mediums, which are different from each other and alternately stacked under the light emitting structure, and a second electrode layer under the reflective layer.

主权项

1. A semiconductor light emitting device comprising:
a light emitting structure including a first conductive semiconductor layer, an active layer under the first conductive semiconductor layer, and a second conductive semiconductor layer under the active layer; a reflective structure comprising a first layer having a first refractive index and a second layer having a second refractive index different from the first refractive index under the light emitting structure; a first electrode layer formed on the first conductive semiconductor layer; a metal layer under the reflective structure; and a conductive support member having a metal material under the metal layer, wherein the metal layer includes a plurality of protrusions and the plurality of protrusions are protruded in a direction toward a lower surface of the second conductive semiconductor layer, wherein the metal layer makes electric contact with the reflective structure and the light emitting structure, wherein the first conductive semiconductor layer includes an upper surface, wherein the upper surface of the first conductive semiconductor layer includes a first region formed in a roughness and a second region formed in a flat surface under the first electrode layer, wherein the first conductive semiconductor layer includes an AlGaN based semiconductor layer and the second conductive semiconductor layer includes an AlGaN based semiconductor layer, wherein an outer sidewall of the conductive support member extends outward beyond an outer sidewall of the light emitting structure, and wherein the lower surface of the second conductive semiconductor layer is contacted with the plurality of protrusions and the reflective structure.