公开(公告)号：US10446529B2

公开(公告)日：2019-10-15

申请号：US15874720

申请日：2018-01-18

Applicant: LG ELECTRONICS INC.

Inventor： Younghak Chang ,  Minwoo Lee ,  Yeonhong Jung ,  Youngje Jo

IPC: H01L25/07 ,  H01L25/075 ,  H01L33/02 ,  H01L33/00 ,  H01L33/20 ,  H01L33/62 ,  H01L33/16 ,  H01L33/22 ,  H01L33/32

Abstract: A semiconductor light emitting device including a first conductive electrode and a second conductive electrode; a first conductive semiconductor layer on which the first conductive electrode is disposed; a second conductive semiconductor layer overlapping the first conductive semiconductor layer, on which the second conductive electrode is disposed; and an active layer disposed between the first conductive semiconductor layer and the second conductive semiconductor layer. Further, the second conductive semiconductor layer includes a first layer including a porous material capable of being electro-polished and disposed on an outer surface of the semiconductor light emitting device; a second layer disposed under the first layer and having a lower impurity concentration than the first layer; and a third layer disposed between the second layer and the active layer and having a higher impurity concentration than the second layer.