Patent ID: 11929397
Assignee: INFINEON TECHNOLOGIES AG
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. A method of manufacturing a semiconductor device, the method comprising:
forming a source region of a first conductivity type and a body region of a second conductivity type in a silicon carbide semiconductor body; and
forming a trench structure extending from a first surface into the silicon carbide semiconductor body along a vertical direction, the trench structure comprising a gate electrode and a gate dielectric,
wherein the trench structure is stripe-shaped and runs along a longitudinal direction that is perpendicular to the vertical direction,
wherein the source region comprises a first source sub-region and a second source sub-region alternately arranged along the longitudinal direction,
wherein a doping concentration profile of the first source sub-region along a vertical direction differs from a doping concentration profile of the second source sub-region along the vertical direction.