Patent ID: 11961933
Assignee: STMICROELECTRONICS S.R.L.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A method, comprising:
forming a semiconductor body by:
forming a front epitaxial layer on a semiconductive structure, the front epitaxial layer having a first conductivity type; and
forming an anode region extending into the front epitaxial layer, the anode region having a second conductivity type that is different from the first conductivity type;

forming a plurality of gettering regions in the semiconductive structure;
forming a first dielectric layer on the semiconductor body, the first dielectric layer defining a recess that exposes the anode region;
forming a second dielectric layer on the semiconductor body and on the first dielectric layer, the second dielectric layer extending into the recess; and
forming a polysilicon layer on the first dielectric layer and contacting the semiconductor body in the recess, the polysilicon layer having the second conductivity type.