Light emitting device, light emitting device package, and lighting system

摘要

Provided is a light emitting device. In one embodiment, a light emitting device includes: a light emitting structure comprising a first conductive type semiconductor layer (130), a second conductive type semiconductor layer (150), and an active layer (140) between the first conductive type semiconductor layer and the second conductive type semiconductor layer; and a conductive support member under the light emitting structure. The conductive support member comprises a first conductive support member (160) and a second conductive support member (165). The second conductive support member has a thermal conductivity higher than that of the first conductive support member.