Patent ID: 9472398
Filing Date: 2016-10-18
CPC Classification: C23C,H01L

Claim Text:
1. A method of manufacturing a semiconductor device by simultaneously supplying a first source gas and a second source gas into a processing chamber to form a film on a substrate placed in the processing chamber, the method comprising: (a) supplying the second source gas into the processing chamber at a second flow rate while supplying the first source gas into the processing chamber at a first flow rate to form a first film on the substrate; (b) supplying the second source gas into the processing chamber at a fourth flow rate lower than the second flow rate while supplying the first source gas into the processing chamber at a third flow rate lower than the first flow rate to form a second film on the substrate; (c) supplying the second source gas into the processing chamber at a fifth flow rate greater than the second flow rate while supplying the first source gas into the processing chamber at the third flow rate to form a third film on the substrate; and (d) supplying the second source gas into the processing chamber at the fourth flow rate while supplying the first source gas into the processing chamber at the third flow rate to form a fourth film on the substrate, wherein the step (a) through the step (d) are sequentially performed.