Patent ID: 7087530

Claim:
A chemical mechanical polishing process comprising: polishing of an interlayer insulating film with an elastic modulus of no greater than 20 GPa as measured by the nanoindentation method, using an aqueous dispersion which comprises a scratch inhibitor and an abrasive comprising organic/inorganic composite particles, wherein said scratch inhibitor is at least one compound selected from the group consisting of (1) biphenol, (2) bipyridyl, (3) 2-vinylpyridine and 4-vinylpyridine, (4) salicylaldoxime, (5) o-phenylenediamine and m-phenylenediamine, (6) catechol, (7) o-aminophenol, (8) thiourea, (9) an N-alkyl group-containing (meth)acrylamide, (10) an N-aminoalkyl group-containing (meth)acrylamide, (11) a heterocyclic compound with a heteropentacycle and with no aromatic ring forming the skeleton, (12) a heterocyclic compound with a heteropentacycle and with an aromatic ring forming the skeleton, (13) phthalazine, (14) a compound with a heterohexacycle bearing three nitrogen atoms and a derivative of any of compounds (1) through (14), and (15) a surfactant; each of said organic/inorganic composite particles comprises an organic particle and a coating of inorganic particles on said organic particle; a zeta potential of said organic particle is opposite in sign to a zeta potential of each of said inorganic particles; and said organic particle and said inorganic particles are bonded together by electrostatic force.