Patent ID: 8415682
Filing Date: 2013-04-09
Classification: H01L

Abstract:
1. A semiconductor light emitting device comprising: a substrate having a principal surface; a protective film placed on the substrate, the protective film having a window section, wherein the protective film and the substrate are made of different materials from each other; a buffer layer placed on the window section of the protective film on the substrate; an n-type semiconductor layer placed on the buffer layer and on the protective film, and doped with an n-type impurity, wherein the protective film has protrusions that protrude from the principal surface into the n-type semiconductor layer to form a concave portion of the n-type semiconductor layer between the protrusions thereby forming an uneven interface between the n-type semiconductor layer and the protective film, the interface being disposed between part of the n-type semiconductor layer and the substrate; an active layer placed on the n-type semiconductor layer; and a p-type semiconductor layer placed on the active layer and doped with a p-type impurity.