Patent ID: 8138506
Filing Date: 2012-03-20
Classification: H01L

Abstract:
1. A Group III nitride-based compound semiconductor light-emitting device having an epitaxial layer joined on its p-layer side to a conductive support substrate via a layer formed of a conductive material, an n-layer disposed on a light extraction side, an n-contact electrode formed on the n-layer, and a p-contact electrode formed on the p-layer, wherein: the n-contact electrode comprises a large-area portion serving as a bonding pad, and a wiring trace portion extending from the large-area portion; the interface between the p-contact electrode and the p-layer includes a low-resistance face having low contact resistance with the p-contact electrode, and a high-resistance face having high contact resistance with the p-contact electrode; and the orthogonal projection of the large area potion of the n-contact electrode on the interface between the p-layer and the p-contact electrode does not fall in the low-resistance face.