Patent ID: 6302768
Filing Date: 2001-10-16
Classification: B24B,C23C,H01L

Abstract:
A method of making a diamond film, the method comprisingvapor depositing a diamond film on a substrate;preparing a silica dispersion including 5 to 40 wt % of silicon dioxide particles having an average particle size of from 5 to 1,000 nm dispersed in an aqueous solution, the silica dispersion having a coefficient of viscosity of from 1 to 200 cP and a pH of from 8 to 12.5,applying the silica dispersion to a surface of the diamond film and bringing a flat surface of a stool comprising an organic material into contact with the surface of the diamond film; andpolishing the surface of the diamond film by repetitively moving the surface of the stool parallel to the surface of the diamond film while pressing the surface of the stool and the surface of the diamond film together.