公开(公告)号：US20140183581A1

公开(公告)日：2014-07-03

申请号：US13731887

申请日：2012-12-31

Applicant: EPISTAR CORPORATION

Inventor： Chi Hung Wu ,  Chen Ou ,  Chi Ling LEE ,  Wei Han WANG ,  Hui Tang SHEN ,  Yi Lin GUO ,  Hung Chih YANG

IPC: H01L33/22

CPC classification number: H01L33/22 ,  H01L33/0095

Abstract: A light-emitting device comprises a substrate; a first semiconductor layer formed on the substrate; a light-emitting layer on the first semiconductor layer; and a second semiconductor layer having a rough surface formed on the light-emitting layer, wherein the rough surface comprises a plurality of cavities randomly distributed on the rough surface, and one of the plurality of cavities has a substantially hexagonal shape viewed from top and a curved sidewall viewed from cross-section.

Abstract translation: 发光装置包括基板; 形成在所述基板上的第一半导体层; 在所述第一半导体层上的发光层; 以及第二半导体层，其具有形成在所述发光层上的粗糙表面，其中所述粗糙表面包括随机分布在所述粗糙表面上的多个空腔，并且所述多个空腔中的一个具有从顶部观察的大致六边形形状， 从横截面看弯曲的侧壁。