Patent ID: 6855592
Filing Date: 2005-02-15
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: forming a barrier for isolating devices from one another on a semiconductor substrate; forming a gate insulating layer on the semiconductor substrate; forming a gate electrode on the gate insulating layer; forming LDD regions in the semiconductor substrate at both sides of the gate electrode; forming an insulating layer on an entire surface of the semiconductor substrate including the gate electrode; forming sidewall spacer at both sides of the gate electrode by selectively removing the insulating layer, simultaneously, etching the semiconductor substrate at a predetermined thickness; performing a cleaning process on the semiconductor substrate; forming source and drain regions on the surface of the semiconductor substrate; decreasing a grain size of the gate electrode, source and drain regions by performing a pre-amorphization implant (PAI) process; and forming a metal silcide layer on surfaces of the gate electrode and the source/drain regions.