Patent ID: 7375383

Claim:
A gallium nitride-based III-V Group compound semiconductor light-emitting device comprising: a substrate having a substantially square surface shape, said substrate having first and second major surfaces; a semiconductor stacked layer structure arranged over said first major surface of the substrate, and comprising an n-type gallium nitride-based III-V Group compound semiconductor layer and a p-type gallium nitride-based III-V Group compound semiconductor layer provided over said n-type semiconductor layer, said p-type semiconductor layer having a cut-off portion partially exposing a surface of said n-type semiconductor layer; a first electrode structure provided on the exposed surface of said n-type semiconductor layer; a second electrode structure provided in electrical contact with said p-type semiconductor layer, and arranged on the same side of the substrate as said first electrode structure, said second electrode structure comprising a light-transmitting electrode layer and provided on a surface of said p-type semiconductor layer, and a bonding pad provided on said light-transmitting electrode layer; a continuous insulating protective film covering a surface of said light-transmitting electrode layer, having a thickness of from 0.001 μm to 1 μm, exposed between said first electrode structure and said bonding pad, as well as a portion of the exposed surface of said n-type semiconductor layer, wherein the insulating protective film has a light-transmissivity.