Patent ID: 8786026
Filing Date: 2014-07-22
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a silicon trace doped with a first dopant; an isolation region formed in the silicon trace; a first polysilicon trace formed on the silicon trace; a second polysilicon trace adjacent to the first polysilicon trace and formed on the silicon trace and the isolation region; a source/drain region formed in the silicon trace between the first and the second polysilicon traces, wherein the source/drain region is doped with a second dopant opposite the first dopant; a channel region in the silicon trace under the first polysilicon trace and doped with the first dopant; a doping region formed in the silicon trace and between the source/drain region and the isolation region, wherein the doping region is doped with the second dopant and is partially overlapped by the second polysilicon trace; and a dielectric layer formed on the first and second polysilicon traces and on the source/drain region, wherein the dielectric layer includes a cavity filled with a conductive material to form a contact area, the contact area overlapping part of the source/drain region and the second polysilicon trace to electrically connect the second polysilicon trace with the source/drain region.