Light emitting device, light emitting device package, and lighting system including the same

摘要

Provided are a light emitting device, a light emitting device package, and a lighting system including the same. The light emitting device includes a second electrode layerelectrode, a light emitting structure, a texture, and a current spreading layer. The light emitting structure is on second electrode layerelectrode, and includes a second conductive type semiconductor layer, an active layer on the second conductive type semiconductor layer, and a first conductive type semiconductor layer on the active layer. The texture is on at least one portion of the light emitting structure. The current spreading layer is on the light emitting structure provided with the texture.

主权项

1. A light emitting device comprising:
a second electrode layer; a light emitting structure on the second electrode layer, the light emitting structure comprising a second conductive type semiconductor layer, an active layer on the second conductive type semiconductor layer, and a first conductive type semiconductor layer on the active layer; a texture on at least one portion of the light emitting structure; a current spreading layer formed directly on the light emitting structure provided with the texture; a first electrode layer on the current spreading layer; and a coating member on the upper side of the current spreading layer, wherein the texture is formed in an upper surface of the first conductive type semiconductor layer, wherein a vertical cross section of the texture comprises a first direction and a second direction being different from the first direction, wherein the first direction and the second direction are substantially perpendicular, wherein the texture comprises a plurality of protruding portions and a plurality of groove portions, wherein the plurality of protruding portions are connected to each other, wherein the coating member is disposed to surround the first electrode layer, and wherein the coating member comprises phosphor, and wherein a top surface of the first electrode layer is lower than a top surface of the coating member; wherein the current spreading layer comprises a plurality of protruding portions and a plurality of groove portions.