Patent ID: 11923429
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A semiconductor device comprising:
an isolation structure disposed in a semiconductor substrate, wherein the isolation structure demarcates a device region in the semiconductor substrate;
a first source/drain region and a second source/drain region disposed in the device region and laterally spaced from one another, wherein a portion of the device region extends laterally from the first source/drain region to the second source/drain region; and
a gate disposed over the semiconductor substrate, wherein the gate comprises a central portion and a peripheral portion, wherein the central portion overlies the portion of the device region, and wherein the peripheral portion protrudes from the central portion towards a sidewall of the isolation structure; and
wherein the gate has a first region and a second region with different doping types, the first region and the second region being directly over the portion of the device region, as viewed in a cross-sectional view.