Patent ID: 11859280
Assignee: KOKUSAI ELECTRIC CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 11:
12. A method of manufacturing a semiconductor device, comprising: providing a substrate in a process vessel, the process vessel comprising: two process gas nozzles arranged substantially in parallel with a gap therebetween configured to supply a process gas into the process vessel, a first inert gas nozzle and a second inert gas nozzle provided respectively in two regions divided by a first straight line passing through a center of the two process gas nozzles and a center of the substrate, wherein an angle between the first straight line and a second straight line extending from the center of the substrate to each of the first and second inert gas nozzles is within a range from 90 to 180 degrees; and an exhaust port provided at the process vessel; supplying the process gas into the process vessel through at least one of the two process gas nozzles; supplying an inert gas into the process vessel through the first inert gas nozzle and the second inert gas nozzle; controlling a first flow rate of the inert gas through the first inert gas nozzle and a second flow rate of the inert gas through the second inert gas nozzle; and exhausting an inner atmosphere of the process vessel through the exhaust port.