Patent ID: 11894258
Assignee: FUJI ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 24:
25. A manufacturing method for a semiconductor diode, the manufacturing method comprising:
providing an anode electrode on a front surface side of a semiconductor substrate;
providing a drift region of a first conductivity type in the semiconductor substrate;
providing a first anode region of the first conductivity type that is in Schottky contact with the anode electrode; and
providing a second anode region of a second conductivity type that is different from the first conductivity type,
wherein the first anode region has a doping concentration lower than or equal to a doping concentration of the second anode region, and is spaced from the drift region by the second anode region, and
wherein a thickness of the second anode region in a depth direction below the first anode region is equal to or greater than 0.5 μm.