Patent ID: 7704856

Claim:
A substrate processing apparatus when a wiring is formed on a substrate to be processed, comprising: a substrate support which has a flat supporting surface and fixedly supports the substrate on the supporting surface; and a tool which subjects one principal surface of the substrate fixedly supported by said substrate support to cutting, wherein on the one principal surface of the substrate the wiring is formed, and said substrate support attaches an other principal surface of the substrate to the supporting surface by suction in a state that an entire surface of the other principal surface adheres to the supporting surface so that the other principal surface of the substrate is forcibly used as a flat reference plane, and the one principal surface of the substrate is subjected to cutting by said tool to perform planarization processing in such a manner that a surface of the wiring and a surface of an insulating film become continuously flat; wherein the substrate is a semiconductor substrate; and correcting of parallelism of the semiconductor substrate is performed with the other principal surface as a reference, a position of the one principal surface is detected, and an amount of cutting is calculated from the detected position of the one principal surface to perform control.