Patent ID: 8384151

Claim:
A semiconductor device, comprising: a semiconductor body comprising a base region of a first conductivity type and a main horizontal surface; a first electrode arranged on the main horizontal surface; the semiconductor body further comprising, in a vertical cross-section: an IGBT-cell comprising a body region of a second conductivity type forming a first pn-junction with the base region; and a diode-cell comprising an anode region of the second conductivity type forming a second pn-junction with the base region; and a source region of the first conductivity type in ohmic contact with the first electrode and an anti-latch-up region of the second conductivity type in ohmic contact with the first electrode being, in the vertical cross-section, only formed in the IGBT-cell, the anti-latch-up region having a maximum doping concentration which is higher than a maximum doping concentration of the body region, wherein the diode-cell further comprises a first gate electrode insulated from the semiconductor body by a gate dielectric region and insulated from the first electrode, and wherein the anode region adjoins, in the vertical cross-section, the gate dielectric region and the body region.