Patent ID: 6924227
Filing Date: 2005-08-02
Classification: C09G,C09K

Abstract:
1. A method of manufacturing a semiconductor device, which comprises: forming a wiring groove on a surface of an insulating film formed above a semiconductor substrate; depositing a conductive material film on a surface of said insulating film including an inner surface of said wiring groove; and subjecting said conductive material film to a chemical mechanical polishing by making use of a slurry for chemical mechanical polishing, which contains polishing particles comprising first colloidal silica particles whose primary particles have a diameter ranging from 5to 20 nm, and second colloidal silica particles whose primary particles have a diameter ranging from 20 nm to 50 nm, wherein the weight ratio of the first colloidal silica particles is in the range of 0.6 to 0.9 based on a total weight of said first and second colloidal silica particles to remove said conductive material film excluding a conductive material film portion which is buried in said wiring groove.