Patent ID: 7652308
Filing Date: 2010-01-26
Classification: H01L

Abstract:
1. A semiconductor device having a gate-all-around (GAA) structure, comprising: a semiconductor substrate having a body, at least one supporting post protruding from the body, and at least one pair of fins separated from the body, wherein at least one end of each fin of the at least one pair of fins is connected to and supported by the at least one supporting post, and the at least one pair of fins of the semiconductor substrate is doped with first conductive impurities; at least one common gate electrode enclosing a portion of each fin of the at least one pair of fins of the semiconductor substrate, insulated from the semiconductor substrate; at least one gate insulating layer between the at least one common gate electrode and the at least one pair of fins of the semiconductor substrate; and a source region and a drain region on other portions of the at least one pair of fins which are located on opposite sides of the at least one common gate electrode and doped with second conductive impurities, wherein the at least one supporting post of the semiconductor substrate is doped with the second conductive impurities.