Patent ID: 11869986
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A semiconductor device, comprising:
a substrate;
a first trench in the substrate;
a first doped layer of a first conductivity type surrounding the first trench;
a second trench in the substrate, the second trench laterally spaced apart from the first trench;
a second doped layer of the first conductivity type surrounding the second trench, wherein the first doped layer overlaps with the second doped layer forming a first doped region with a doping concentration greater than the first doped layer and the second doped layer; and
a second doped region of a second conductivity type opposite the first conductivity type abutting the first doped region to form a junction at an interface between the first doped region and the second doped region.