Patent ID: 9461142
Filing Date: 2016-10-04
CPC Classification: H01L

Claim Text:
1. A fabrication method of a field effect device successively comprising: providing a substrate covered by etching the first layer of first semiconductor material using the gate pattern as etch mask, etching the second layer of second semiconductor material so as to form a cavity and to suspend the first layer of first semiconductor material, depositing a filling material so as to fill the cavity, etching the filling material using the gate pattern as etch mask to form a dividing pattern in the cavity, the semiconductor material pattern covering the dividing pattern, the dividing pattern comprising at least three consecutive surfaces covered by the semiconductor material pattern, forming the source and drain regions by selective epitaxy, depositing a covering layer so as to cover the substrate, the semiconductor material pattern and the gate pattern, eliminating the substrate so as to release a part of the source region, of the drain region and of the gate pattern, depositing a second covering layer, the first and second covering layers being separated by the semiconductor material pattern over at least a part thereof, forming access holes to the source region, the drain region and the gate pattern in the second covering layer.