Abstract:
A two-axis coordinate system, in which two parameters to be monitored selected from a plurality of apparatus status parameters indicating a status of a semiconductor manufacturing apparatus are allocated to a first axis and a second axis, respectively, is prepared so as to detect an abnormality of the semiconductor manufacturing apparatus. As the parameters to be monitored, for example, a cumulative film thickness of a film forming process performed in the past by a film forming apparatus, and an open degree of a pressure adjusting valve provided in a vacuum exhaust path for controlling the pressure in a reactor vessel are selected. A value of the parameter to be monitored, which was obtained while the semiconductor manufacturing apparatus was normally operating in the past, is plotted on the two-axis coordinate system. A boundary between a normal status and an abnormal status is set around a plot group. A value of the parameter to be monitored, which is obtained while the semiconductor manufacturing apparatus is currently operating, is plotted on the two-axis coordinate system, and based on a positional relationship between the plot and the boundary, whether an abnormality is generated or not and a type of the abnormality are specified.
Abstract:
A heat treating system comprising a holding unit for holding a plurality of substrates, a reaction container into which the holding unit is carried, a treating gas supply mechanism for supplying a treating gas into the reaction container, and a heating mechanism for heating the reaction container when the treating gas is supplied to perform a film-forming processing on the substrates. Flow- rate parameter table data in which data on the number of substrates scheduled for treating in one batch is allowed to correspond to the target value data of the treating gas flow-rate parameters is stored in a flow-rate parameter table data storing unit. A control means obtains the target value data of the treating gas flow-rate parameters according to an actual number of substrates scheduled for treating in one batch and based on flow-rate parameter table data stored in the flow-rate parameter table data storing unit, and controls the treating gas supply mechanism according to the target value data. The target value data of the flow- rate parameters is so determined as to provide a uniform film-forming speed to treating batches in which the number of substrate scheduled for treating differs from one another.