Patent ID: 7010374
Filing Date: 2006-03-07
Classification: H01L,Y10S

Abstract:
1. A process control method in a semiconductor processing apparatus, having a vacuum processing chamber, for processing wafers in a lot of wafers in accordance with a process recipe, comprising the steps of: (a) executing a first plasma cleaning within the vacuum processing chamber at every processing of one lot of wafers; (b) detecting an abnormality of the process on a basis of sensor data detected by a sensor disposed in the semiconductor processing apparatus with respect to at least one wafer of the one lot of wafers; and (c) when the abnormality of the process is detected during processing of at least one wafer of the one lot of wafers in the step (b), executing a second plasma cleaning within the vacuum processing chamber under a condition different from the first plasma cleaning at a timing which is after termination of processing of all wafers of the one lot of wafers which includes the at least one wafer and before starting of processing of a next lot of wafers.