Patent ID: 7452819
Filing Date: 2008-11-18
Classification: C09G,H01L

Abstract:
1. A chemical mechanical polishing method of an organic film comprising: forming the organic film above a semiconductor substrate, the organic film being formed above an underlying layer provided with a concave portion; contacting the organic film formed above the semiconductor substrate with a polishing pad attached to a turntable; and dropping a slurry onto the polishing pad to polish the organic film, the slurry being selected from the group consisting of a first slurry and a second slurry, the first slurry comprising a resin particle having a functional group selected from the group consisting of an anionic functional group, a cationic functional group, an amphoteric functional group and a nonionic functional group, and having a primary particle diameter ranging from 0.05 to 5 μm, the first slurry having a pH ranging from 2 to 8, the primary particle diameter of the resin particle in the first slurry being not less than 70% of an opening diameter of the concave portion; and the second slurry comprising a resin particle having a primary particle diameter ranging from 0.05 to 5 μm, the primary particle diameter of the resin particle in the second slurry being larger than the opening diameter of the concave portion, and a surfactant having a hydrophilic moiety, the resin particle in the slurry being formed of at least one selected from the group consisting of methacrylic resin, polystyrene resin, urea resin, melamine resin, polyacetal resin and polycarbonate resin.