Patent ID: 11916142
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A semiconductor device, comprising:
a fin of a semiconductor material at a surface of a substrate;
a source in the fin, the source having a first conductivity type;
a body in the fin abutting the source, the body having a second conductivity type, opposite from the first conductivity type;
an extended drain region in the fin, the extended drain region having the first conductivity type at a first concentration of first conductivity type dopants, the extended drain region being wider than the body;
a drain contact region to the extended drain region opposite the body, the drain contact region having the first conductivity type;
a first portion of the extended drain region between the body and the drain contact region, the first portion having a second concentration of first conductivity type dopants greater than the first concentration of first conductivity type dopants;
a second portion adjacent to the first portion of the extended drain region and a third portion adjacent to the first portion opposite from the second portion, the second portion and third portion having second conductivity type dopant at a higher concentration than a remainder of the extended drain region;
a gate dielectric layer on the body; and
a gate over the gate dielectric layer.