Patent ID: 7525123

Claim:
A semiconductor device having an electrode electrically connected to a semiconductor layer having a stripe-shaped ridge on a surface thereof, comprising: a first insulating film disposed on a region between said semiconductor layer and the electrode, a second insulating film disposed from a side surface to an upper surface of said semiconductor layer and in contact with said first insulating layer, and an adhesion film disposed so as to cover at least a portion of said first insulating film, said electrode having a protrusion protruding toward the semiconductor layer on at least the surface thereof facing said semiconductor layer, said electrode being disposed so as to come in contact with said adhesion film, and said electrode being disposed in contact with the semiconductor layer at a top surface of the stripe-shaped ridge of the semiconductor layer, said device having a region where the second insulating film, the first insulating film, and the adhesion film are stacked in sequence on the semiconductor layer.