Patent ID: 6107173
Filing Date: 2000-08-22
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, comprising the steps of:providing a substrate;forming a gate insulating layer on the substrate;forming a conductive coating on the gate insulating layer;forming a region of a first conductivity type at a first portion of the conductive coating;forming a region of a second conductivity type at a second portion of the conductive coating; andetching the conductive coating at a back pressure of less than 8 Torr, the etching of the conductive coating including the steps of,producing the back pressure of less than 8 Torr with helium gas, andetching the conductive coating with a voltage of less than 400 W in an atmosphere of HBr/Cl.sub.2 at a pressure of 0 to 200 mT.