Patent ID: 6664157
Filing Date: 2003-12-16
Classification: H01L

Abstract:
A method of producing a semiconductor integrated circuit device having a semiconductor region on a main surface of a semiconductor substrate and having a capacitor element that includes a first electrode, a dielectric film and a second electrode on the main surface, comprising the steps of:(a) forming the semiconductor region on the main surface of the semiconductor substrate; (b) forming a first insulating film on the semiconductor region; (c) forming a first electric conductor in the first insulating film; (d) forming a second insulating film on the first insulating film; (e) forming an opening in the second insulating film to expose part of the first electric conductor on the bottom of the opening; (f) forming a barrier film on the surface of the first electric conductor in the opening; (g) forming the first electrode in the opening so as to be electrically connected to the semiconductor region through the barrier film and the first electric conductor; (h) forming the dielectric film on the first electrode; (i) heat-treating the dielectric film in an oxidizing atmosphere; and (j) forming the second electrode on the dielectric film.