Patent ID: 6468817
Filing Date: 2002-10-22
Classification: H01L

Abstract:
A method of manufacturing a semiconductor integrated circuit device, comprising:a step (a) of forming an insulating film on main surfaces of a plurality of first wafers which flow through a mass-production process; a step (b) of preparing a dummy wafer for monitoring, on which a silicon-oxide-based insulating film is formed; a step (c) of performing chemical mechanical polishing processing on the insulating films respectively formed on main surfaces of the plurality of first wafers and the dummy wafer; a step (d) of performing etching processing on the insulating film of the dummy wafer with use of a solution containing hydrofluoric acid, after the step of performing the chemical mechanical polishing processing; and a step (e) of measuring a number of scratches on the insulating film of the dummy wafer subjected to the etching processing, thereby to manage the number of scratches formed in the insulating films of the plurality of first wafers in the step of performing the chemical mechanical polishing processing.