Patent ID: 6419557
Filing Date: 2002-07-16
Classification: C09G,H01L

Abstract:
A polishing method comprising:applying a polishing agent containing polishing grains and a surfactant onto an oxide film, which is formed on a substrate having a depressed portion and a protruding portion, said polishing grains containing CeO2 as a main component, wherein the surfactant is an organic compound including at least one hydrophilic group selected from the group consisting of COOH, COOM1, wherein M1 represents an atom or a functional group which can form a salt when substituted for a hydrogen atom of a carboxyl group, SO3H and SO3M2, wherein M2 represents an atom or a functional group which can form a salt when substituted for a hydrogen atom of a sulfo group; and polishing the film until the film is flattened without the occurrence of dishing.