Patent ID: 11929394
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;
a second gate electrode on the second gate insulating film; and
a source electrode formed over the semiconductor substrate and at least placed over 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 under the center of the first gate electrode and the center of the second gate electrode,
a gate finger is formed between the source electrode and a peripheral portion of the semiconductor substrate in a cross section, and
the peripheral portion of the semiconductor substrate is recessed and reaches to an edge of the semiconductor substrate.