Patent ID: 6682944
Filing Date: 2004-01-27
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device comprising the steps of:forming an underlying insulating film over a semiconductor substrate; forming a first conductive film over the underlying insulating film; forming a dielectric film consisting of one of ferroelectric material and high-dielectric material on the first conductive film; forming a second conductive film on the dielectric film; forming a mask over the second conductive film; etching selectively the second conductive film exposed from the mask in a first atmosphere containing a bromine to shape the second conductive film into a capacitor upper electrode; etching selectively the dielectric film exposed from the mask in a second atmosphere containing a chlorine to shape the dielectric film into a capacitor dielectric film; and etching selectively the first conductive film exposed from the mask in a third atmosphere containing the bromine to shape the first conductive film into a capacitor lower electrode.