Patent ID: 7338905

Claim:
A semiconductor device manufacture method, comprising steps of: polishing a substrate using chemical mechanical polishing; and removing foreign matters left on a polished surface of the substrate in a separate cleaning step after completion of the chemical mechanical polishing of the substrate; wherein the step of removing foreign matters include steps of: bringing the polished surface of the substrate into contact with first liquid; and bringing the polished surface of the substrate into contact with second liquid after being brought into contact with to the first liquid, and wherein the first liquid is either solution which contains at least one first substance selected from a first group consisting of benzotriazole, derivative of benzotriazole and interfacial active agent, or water, and the second liquid is solution which contains at least one of the first group consisting of benzotriazole, derivative of benzotriazole and interfacial active agent at a weight percentage higher than a weight percentage of the first group in the first liquid.