Light emitting device, light emitting device package

摘要

Provided are a light emitting device, a light emitting device package, and a lighting system. The light emitting device includes a light emitting structure, a buffer layer on the light emitting structure, and a filter layer on the buffer layer.

主权项

1. A light emitting device comprising:
a 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; a support layer on the light emitting structure; a filter layer on the support layer; and an air gap inter-disposed between the light emitting structure and the filter layer, wherein the filter layer comprises:
a first dielectric layer having a first refractive index; anda second dielectric layer on the first dielectric layer, the second dielectric layer having a second refractive index different from the first refractive index, wherein an outer side surface of the support layer is vertically aligned with an outer side surface of the filter layer; wherein a lateral width of the air gap is greater than a lateral width of the support layer, and wherein all top surfaces of the support layer directly contact a bottom surface of the filter layer.