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

Claim 10:
11. 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 N-type region and a plurality of P-type regions, the N-type region extending from a surface of the active region toward the SiC 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 the plurality of P-type regions include a plurality of first P-type regions and a plurality of second P-type regions;
a plurality of ohmic contact metal layers on a surface of the first P-type regions; and
a Schottky metal layer, the Schottky metal layer covering a surface of the ohmic contact layers and a surface of the active region that without covering the ohmic metal layer.