Patent ID: 7196010

Claim:
In a method of manufacturing a semiconductor device that includes a step of planarizing a wafer surface containing heterogeneous substances using a CMP process with a slurry composition, the improvement comprising the sequential steps of: a forming a first material layer pattern on a first surface portion of a semiconductor lower layer, said lower layer comprising adjacent first and second surface portions, said first material layer consisting of a first material which exhibits the property of hydrophobicity with respect to the slurry composition along a surface of said first material; (b) forming a second material layer pattern on said surface of said first material and also on said second surface portion of said semiconductor lower layers, said second material layer consisting of a second material that is different from the first material and which exhibits the property of hydrophilicity with respect to the slurry composition along a surface of said second material; and, (c) planarizing the surface of the resultant structure to expose adjacent planarized surfaces of the first and second materials by a chemical mechanical polishing (CMP) process using a slurry composition consisting essentially of water, abrasive grains-selected from the group consisting of silica (SiO 2 ), alumina (Al 2 O 3 ), ceria (CeO 2 ), magania (Mn 2 O 3 ), and mixtures thereof, and about 0.001% to about 5% by weight of a polymer additive selected from the group consisting of poiy vinyl methyl ether (PVME), poly ethylene glycol (PEG), poly oxyethylene 23 lauryl ether (POLE), poly propanoic acid (PPA), poly acrylic acid (PAA), poly ether glycol bis ether (PEGBE), and mixtures thereof.