Patent ID: 11967643
Assignee: SANKEN ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A semiconductor device comprising:
a first drift region of a first conductivity type;
a base region of a second conductivity type arranged on the first drift region;
a source region of the first conductivity type arranged on the base region;
a main electrode electrically connected to the source region; and
a gate electrode structure that penetrates the source region and base region and reaches the first drift region, wherein:
the gate electrode structure comprises:
a gate electrode; and
an insulating material that insulates the gate electrode from the first drift region and the base region;

a field plate structure reaching the first drift region deeper than the gate electrode structure, and comprising:
a field plate;
a resistive part that electrically connects the main electrode to the field plate; and
an insulating material that insulates the field plate and the resistive part from the first drift region; and

a resistance of the gate electrode is lower than that of the field plate.