Patent ID: 9150758
Filing Date: 2015-10-06
Classification: B24B,C09G,C09K,H01L

Abstract:
1. A polishing composition used in polishing a surface of an object to be polished that includes a first portion comprised of copper or a copper alloy and a second portion comprised of tantalum, tantalum nitride, a tantalum alloy, titanium, titanium nitride, a titanium alloy, tungsten, tungsten nitride, or a tungsten alloy, the composition comprising an oxidizing agent and a scratch-reducing agent represented by general formula (1) or (2) below, where X 1 and X 2 are each independently a hydrogen atom, a hydroxyl group, a carboxyl group, an alkyl group, an aryl group, an alkyl polyamine group, an alkyl polycarboxylate group, an alkyl polyaminopolyphosphate group, or an alkyl polyaminopolycarboxylate group, wherein the polishing composition has a polishing rate of the second portion higher than that of the first portion.