Patent ID: 6294451
Filing Date: 2001-09-25
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 becomes not smaller than one-half of a width of said contact hole less twice of a thickness of said first conductive film while said applied film remains at a bottom of said contact hole;etching said first conductive film by using said applied film as a mask;removing said remaining applied film; andselectively 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.