LIGHT EMITTING DEVICE AND LIGHTING SYSTEM HAVING THE SAME

摘要

A light emitting device of an embodiment comprises: a substrate having an uneven structure; a reflecting layer which is arranged on at least a partial area of the uneven structure of the substrate, and has a shape depending on the uneven structure; a first conductive semiconductor layer arranged on the reflecting layer; an active layer arranged on the first conductive semiconductor layer; and a second conductive semiconductor layer arranged on the active layer.