Patent ID: 11869814
Assignee: FUJI ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of manufacturing a silicon carbide semiconductor device fabricated on each of a plurality of semiconductor chips formed by epitaxially growing an epitaxial layer on a starting substrate containing silicon carbide, the method comprising:
preparing, as a pre-process a semiconductor wafer in which the epitaxial layer is epitaxially grown on a starting wafer containing the silicon carbide and constituting the starting substrate;
detecting a plurality of types of crystal defects of the epitaxial layer as a detection process;
forming a device element structure in the semiconductor wafer as a formation process;
dicing the semiconductor wafer into the plurality of semiconductor chips as a cutting process, the cutting process being performed after the formation process;
identifying, as a first identification process, as a conforming product candidate, one or more first semiconductor chips that are free of one or more specific types of crystal defects among the plurality of types of crystal defects detected by the detection process;
checking, as a checking process, electrical characteristics of the one or more first semiconductor chips identified by the first identification process; and
identifying, as a second identification process, one or more second semiconductor chips to be a conforming product, from the one or more first semiconductor chips identified by the first identification process, the one or more second semiconductor chips being identified based on a result of the checking process and a predetermined standard obtained in advance.