Patent ID: 7829406
Filing Date: 2010-11-09
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, which comprises: forming an insulating film above a semiconductor substrate having a recess and stopper film formed above the semiconductor substrate excluding the recess, thereby filling the recess with the insulating film; performing a first polishing by polishing the insulating film by means of a chemical mechanical polishing method using a first polishing liquid containing cerium oxide and first anionic surfactant, thereby obtaining a flattened surface; and performing a second polishing by polishing the flattened insulating film using a second polishing liquid containing cerium oxide and a second anionic surfactant having a smaller molecular weight than that of the first anionic surfactant under a polishing condition which differs from that of the first polishing, thereby exposing the stopper film.