Patent ID: 7706907
Filing Date: 2010-04-27
Classification: H01L

Abstract:
1. A substrate processing apparatus, comprising: a processing vessel; a placing table provided in the processing vessel; a substrate carrying means to carry a substrate between the interior and the exterior of the processing vessel; a transfer means provided in the placing table, such that it can be raised from the placing table and lowered to the placing table to receive the substrate from the substrate carrying means and to put the substrate on the placing table; a detecting head to optically detect the outer periphery of the substrate carried by the substrate carrying means located in a substrate transferring position above the transfer means; a driving means provided on the inner wall of the processing vessel to move the detecting head between a detection position in which the outer periphery of the substrate is detected and an evacuation position which is spaced away from a substrate transferring region; a calculation means to obtain positional error information comprising, an amount of a positional error and a direction of the positional error between a current position of the substrate and a programmed position of the substrate, based on detection results from the detecting head; and a control means to correct a substrate transferring position of the substrate above the transfer means, by operating the substrate carrying means, such that the amount of the positional error between the current position of the substrate and the programmed position of the substrate is within an allowable range, based on the positional error information from the calculation means.