Patent ID: 9012944
Filing Date: 2015-04-21
Classification: F21K,F21Y,H01L

Abstract:
1. A light emitting device, comprising: a first semiconductor layer; a plurality of convex structures disposed on a top surface of the first semiconductor layer; a first uneven layer on a top surface of the plurality of convex structures; a nonconductive layer between the top surface of the plurality of convex structures and the first uneven layer; and a light emitting structure layer disposed on a top surface of the first uneven layer, the light emitting structure layer including a first conductive semiconductor layer, an active layer on the first conductive semiconductor layer and a second conductive semiconductor layer on the active layer, wherein the nonconductive layer includes a contact portion contacted directly with the top surface of the plurality of convex structures, wherein the nonconductive layer is formed of a different material from the plurality of convex structures and the first uneven layer, wherein the first uneven layer is formed of a different material from the plurality of convex structures, wherein the plurality of convex structures are disposed in a discontinuous structure on the top surface of the first semiconductor layer, and wherein the nonconductive layer includes at least one selected from a group of MgN, SiN, and ZnN.