Patent ID: 7109529
Filing Date: 2006-09-19
Classification: H01L

Abstract:
1. A flip chip type of light-emitting semiconductor device comprising: a substrate; group III nitride compound semiconductor layers formed on said substrate, said layers comprising a p-type semiconductor layer and an active layer emitting light having a wavelength in a range from 380 nm to 550 nm; and a positive electrode including at least one layer of a first positive electrode layer which is directly formed on a surface of said p-type semiconductor layer, is alloyed with said p-type semiconductor layer and reflects light toward said substrate, said first positive electrode layer comprising at least one of rhodium (Rh), ruthenium (Ru), and an alloy including at least one of these metals and having a high reflectivity with respect to said light having said wavelength in a range from 380 nm to 550 nm, wherein said substrate transmits said light reflected from said positive electrode, and light is emitted from a substrate side of said light-emitting device, wherein current to said active layer is directly supplied from said first positive electrode layer, and wherein said positive electrode further comprises: