| 摘要 |
Embodiments relate to a light emitting device, a light emitting device package, and a lighting system. The light emitting device comprises: a substrate; a light emitting structure over the substrate, the light emitting structure including a first conductive type semiconductor layer, a second conductive type semiconductor layer, and an active layer between the first conductive type semiconductor layer and the second conductive type semiconductor layer, wherein the first conductive type semiconductor layer is partially exposed; a first region having a first concentration and provided at a region of the second conductive type semiconductor layer; a second region having a second concentration and provided at another region of the second conductive type semiconductor layer; and a second electrode over the second conductive type semiconductor layer. |
