Patent ID: 11967627
Assignee: ROHM CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A wide band gap semiconductor device comprising:
a semiconductor substrate;
a first gate insulating film on the semiconductor substrate;
a first gate electrode on the first gate insulating film;
a second gate insulating film on the semiconductor substrate; and
a second gate electrode on the second gate insulating film; and
a source electrode placed over the semiconductor substrate, the first gate electrode and the second gate electrode,
wherein a portion of a surface of the semiconductor substrate between a center of the first gate electrode and a center of the second gate electrode is recessed compared to a portion of a surface of the semiconductor substrate under the center of the first gate electrode and the center of the second gate electrode,
wherein the semiconductor substrate comprises an outer peripheral recessed portion that includes a recess, and
a part of the source electrode is arranged between the first and second gate electrodes and the recess of the outer peripheral recessed portion and does not intrude into the recess of the outer peripheral recessed portion in a cross section.