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

Claim 15:
16. A semiconductor device, comprising:
an isolation structure comprising a dielectric disposed within one or more trenches surrounding a semiconductor material;
a first source/drain region and a second source/drain region disposed within the semiconductor material and separated along a first direction by a channel region;
a conductive plate disposed over the semiconductor material and having concavities disposed along opposing outermost sidewalls of the conductive plate as viewed in a top-view, wherein the concavities are disposed over the first source/drain region and the second source/drain region and wherein the conductive plate is disposed over the channel region; and
wherein the conductive plate comprises a first polysilicon region having a first doping type, a second polysilicon region having a second doping type, and a third polysilicon region having the first doping type, the second polysilicon region being laterally between the first polysilicon region and the third polysilicon region and being vertically over the channel region.