Patent ID: 8344415

Claim:
An insulated-gate bipolar transistor component comprising: a semiconductor body that comprises, in a cell region, a drift zone of a first conduction type; a rear side metallization provided on a rear side of the semiconductor body; and between the drift zone and the rear side metallization, zones of the first conduction type and first and second zones of a second conduction type in contact with the rear side metallization, respectively, wherein the first zones of the second conduction type are formed in a first rear-side region of the cell region, the second zones of the second conduction type are formed in a second rear-side region of the cell region, and the zones of the first conduction type are formed between the first and second zones of the second conduction type, the first and second zones of the second conduction type having different dimensions, wherein a minimum distance between a center of one of the second zones and a zone of the first conduction type that is closest to the one of the second zones is at least a factor of 1.5 to 5 or more greater than a corresponding second minimum distance between a center of one of the first zones and a further zone of the first conduction type that is closest to the one of the first zones, and the drift zone in the cell region contains a region through which charge carriers do not flow in a diode operating mode but flow in an IGBT operating mode, wherein in an operating mode a current flows between an emitter electrode and the rear side metallization through the drift zone.