Patent ID: 6521531
Filing Date: 2003-02-18
Classification: H01L

Abstract:
A method for manufacturing a semiconductor device having an insulation film, comprising the steps of:forming a contact hole in said insulation film; forming a first conductive film on a surface of said semiconductor device including an inner surface of said contact hole; applying a film for filling said contact hole; etching said applied film until a distance from an opening portion of said contact hole to a surface of said applied film is equal to at least one-half of a width of said contact hole, less twice a thickness of said first conductive film; etching said first conductive film by using said applied film as a mask; removing any remaining applied film; selectively growing a second conductive film to fill said contact hole by using said first conductive film remaining on the inner surface of said contact hole as a seed for selective growth; selecting a growth time of said second conductive film in conjunction with the distance from the opening portion of the contact hole to the surface of the applied film; and restricting a growth of the second conductive film to only be on said inner surface of said contact hole.