Patent ID: 6583049
Filing Date: 2003-06-24
Classification: H01L

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