Patent ID: 11926891
Assignee: TOKYO ELECTRON LIMITED
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 6:
7. A cleaning method for removing a silicon-containing film deposited in a temperature-adjustable process container in which temperature is adjusted by a heater and a cooler, the cleaning method comprising:
stabilizing the temperature in the process container to a cleaning temperature; and
removing, the silicon-containing film by supplying a cleaning gas into the process container stabilized at the cleaning temperature,
wherein in the removing the silicon-containing film, a heating capability of the heater and a cooling capability of the cooler are controlled based on the temperature in the process container,
wherein the removing the silicon-containing film includes (a) supplying the cleaning gas into the process container while operating the cooler,
wherein the removing the silicon-containing film includes
increasing a ratio of the cooling capacity of the cooler to the heating capacity of the heater, in a case where the temperature in the process container becomes higher than or equal to a first temperature in (a),
decreasing the ratio in a case where the temperature in the process container becomes less than or equal to a second temperature that is less than the first temperature in (a), and
repeating a cycle including the increasing of the ratio and the decreasing of the ratio, and

wherein the first temperature is changed during the cycle.