Patent ID: 8791031
Filing Date: 2014-07-29
Classification: C23C,H01L

Abstract:
1. A method of manufacturing a semiconductor device using a substrate processing apparatus comprising a process chamber configured to process a substrate, a first process gas supply unit configured to supply a first process gas for forming a first film on the substrate, a second process gas supply unit configured to supply a second process gas for forming a second film on the first film, a purge gas supply unit configured to supply a purge gas for purging an atmosphere in the process chamber, a flow rate control device configured to control flow rates of the first process gas, the second process gas and the purge gas, an exhaust device configured to exhaust the process chamber, a pressure detector installed at the exhaust device to detect an exhaust pressure, a pressure adjustor configured to adjust an inside pressure of the process chamber and a controller connected to at least the pressure detector, the pressure adjustor and the flow rate control device, and configured to control the pressure adjustor and the flow rate control device based on the exhaust pressure detected by the pressure detector, the method comprising: (a) supplying the first process gas from the first process gas supply unit into the process chamber via the flow rate control device to form the film on the substrate; (b) transmitting a signal representing the exhaust pressure detected by the pressure detector to the controller after the first process gas is supplied into the process chamber; (c) controlling the pressure adjustor and the flow rate control device once the signal is received by the controller such that the exhaust pressure reaches a predetermined pressure; (d) supplying the purge gas from the purge gas supply unit into the process chamber after forming the first film; and (e) supplying the second process gas from the second process gas supply unit into the process chamber via the flow rate control device to form the second film on the first film.