Patent ID: 11967651
Assignee: XIAMEN SANAN INTEGRATED CIRCUIT CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A silicon carbide power diode device, comprising:
a silicon carbide substrate;
a silicon carbide epitaxial layer on a first surface of the silicon carbide substrate, the carbide epitaxial layer having an active region, and the active region having a surface away from the silicon carbide substrate;
a Schottky metal layer on the surface of the active region, the active region having an N-type region and a plurality of P-type regions, the N-type region extending from the surface of the active region toward the silicon carbide substrate, the P-type regions are spaced apart from each other in the N-type region, and extend to the surface of the active region; and
a plurality of ohmic contact layers on a surface of some of the P-type regions and set between the P-type regions and the Schottky metal layer;
wherein the plurality of P-type regions include a plurality of first P-type regions and a plurality of second P-type regions, wherein between neighboring ones of the first P-type regions there is at least one of the second P-type region, the ohmic contact layers being on the surface of the first P-type regions.