Patent ID: 9144881
Filing Date: 2015-09-29
Classification: B24B,H01L

Abstract:
1. A polishing apparatus for polishing a substrate, comprising: a peripheral-portion polishing unit configured to polish a peripheral portion of the substrate; a CMP unit configured to polish a flat surface of the substrate; a cleaning unit configured to clean the polished substrate; and a transport system configured to transport the substrate, the transport system being operable to transport the substrate that has been polished in one of the peripheral-portion polishing unit and the CMP unit to the cleaning unit, and transport the substrate that has been cleaned in the cleaning unit to one of the peripheral-portion polishing unit and the CMP unit, wherein if the substrate has been polished in the peripheral-portion polishing unit the transport system being operable to transport the substrate from the cleaning unit to the CMP unit and if the substrate has been polished in the CMP unit the transport system being operable to transport the substrate from the cleaning unit to the peripheral-portion polishing unit.