Patent ID: 6495863
Filing Date: 2002-12-17
Classification: H01L

Abstract:
A semiconductor device comprising:a base layer; and a diode arranged on an upper surface of said base layer, wherein said diode comprises: a plurality of semiconductor regions extending in a first direction respectively and successively forming p-n junctions in a second direction perpendicular to said first direction, the conductivity type of a first semiconductor region located on the side of a first end in said second direction among said plurality of semiconductor regions of said diode is equal to the conductivity type of a second semiconductor region located on the side of a second end opposed to said first end, and the interface between said base layer and said diode in said upper surface of said base layer comprises: a plurality of groove portions having a depth in a third direction perpendicular to said first direction and said second direction, extending in said second direction and successively arranged in said first direction.