Patent ID: 11967645
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A semiconductor device, comprising:
a substrate having a top surface, comprising:
a first drift region with a first conductivity type, extending from the top surface of the substrate into the substrate;
a second drift region with the first conductivity type, extending from the top surface of the substrate into the substrate and adjacent to the first drift region; and
a drain region of the first conductive type within the first drift region;

a field plate over the substrate; and
a gate electrode having a first portion and a second portion, wherein the first portion of the gate electrode is located over the field plate;
a first dielectric layer in contact with the top surface of the substrate and under the field plate; and
a first spacer in contact with the top surface of the substrate and a side of the first dielectric layer;
wherein a side of the first spacer is aligned with a boundary of the drain region and the first drift region.