Patent ID: 6770917
Filing Date: 2004-08-03
Classification: H01L

Abstract:
A high-voltage diode, comprising:a semiconductor body having a first main surface and a second main surface disposed opposite said first main surface, said semiconductor body formed of a second conductivity type being opposite to a first conductivity type; a well-type tone of said first conductivity type disposed in said first main surface of said semiconductor body; a metal contact disposed on said well-type zone; a rear side metallization disposed on said second main surface of said semiconductor body and dispersed opposite to said metal contact; an edge termination having a channel stopper; a passivation layer disposed on said first main surface in a region between said metal contact and said channel stopper, said passivation layer covers a pn junction issuing at said first main surface, said passivation layer containing one of amorphous carbon doped with hydrogen and amorphous silicon and serves as a chipping stopper in a region of said semiconductor body outside said channel stopper; and at least one edge provided as an alignment structure disposed in said first main surface in a region of said well-type zone.