Patent ID: 11862692
Assignee: INFINEON TECHNOLOGIES AUSTRIA AG
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 17:
18. The method of claim 14, wherein the plurality of trenches extends depth-wise in a second direction perpendicular to the first surface into a drift region of a first conductivity type, the method further comprising:
forming a source region of the first conductivity type and a body region of a second conductivity type in each semiconductor mesa, the body region separating the source region from the drift region, the plurality of mesa contacts being in contact with the source regions;
omitting the source region from the semiconductor mesas in the first area; and
for the plurality of mesa contact segments closest to the end of the plurality of trenches and extending from the first area into the second area, contacting a first part of the plurality of mesa contact segments to the body region but not the source region in the first area and contacting a second part of the plurality of mesa contact segments to both the body region and the source region in the second area.