Patent ID: 6300237
Filing Date: 2001-10-09
Classification: H01L

Abstract:
A method of making a semiconductor integrated circuit device, comprising the steps of:(a) forming an insulating film, having a surface, over a semiconductor substrate, said insulating film having through-holes;(b) forming a first conductive film over said insulating film and in the through-holes in such a thickness that the through-holes are filled with said first conductive film;(c) removing said first conductive film over said insulating film so as to leave said first conductive film individually in the through-holes, selectively; and(d) forming an aluminum film over said insulating film and over said first conductive film in said through-holes,wherein said forming the aluminum film comprises:a first step of depositing a first aluminum film under conditions that said semiconductor substrate is kept at a first temperature and said first aluminum film is deposited at a first deposition rate; anda second step of depositing a second aluminum film on said first aluminum film under conditions that said semiconductor substrate is kept at a second temperature higher than said first temperature and said second aluminum film is deposited at a second deposition rate lower than said first deposition rate.