Patent ID: 6376318
Filing Date: 2002-04-23
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:forming a device separation film on a silicon substrate and then forming an N-well region for forming a PMOS device; forming a first selective epitaxial growth film into which boron is doped on said silicon substrate to thereby control a threshold voltage of a channel; sequentially forming a gate oxide film, a gate electrode and a mask oxide film on the entire structure and then patterning selected regions of said mask oxide film, said gate electrode and said gate oxide film to obtain a gate region; forming a oxide film and a nitride film on the entire structure and then forming a double spacer made of a oxide film spacer and a nitride film spacer at the sidewalls of the patterned structure by blanket etching process; forming a second selective epitaxial growth film on said exposed silicon substrate; and performing ion implantation process for said first and second selective epitaxial growth film and then diffusing dopant into said silicon substrate by annealing process, thus forming an elevated source and drain region.