Patent ID: 9695511
Date: 2017-07-04
CPC Classifications: C23C,H01L

Claim:
1. A substrate processing apparatus comprising: a reaction container where a substrate retainer having a substrate placed thereon is loaded; an insulating wall including therein a reaction container accommodation chamber wherein the insulating wall is made of an insulating material and configured to accommodate the reaction container; a heater installed in the reaction container accommodation chamber; a gas distribution channel installed in a sidewall of the insulating wall; a gas distribution mechanism configured to distribute air or an inert gas to gas distribution channel; an intake valve installed at an inlet of the gas distribution channel; an exhaust valve installed at an outlet of the gas distribution channel; and a control unit configured to: control the heater to heat the substrate to a target temperature; control the gas distribution mechanism to circulate the air or the inert gas in the gas distribution channel while controlling the intake valve and the exhaust valve to be in closed state when a temperature of the substrate exceeds the target temperature in a temperature elevating process or control the gas distribution mechanism to distribute the air or the inert gas in the gas distribution channel while controlling the intake valve and the exhaust valve to be in open state when the temperature of the substrate exceeds the target temperature in the temperature elevating process; and control the gas distribution mechanism to stop an operation thereof while controlling the intake valve and the exhaust valve to be in closed state when the temperature of the substrate is lowered to the target temperature, wherein the control unit is further configured to control the gas distribution mechanism to distribute the air or the inert gas in the gas distribution channel while controlling the intake valve and the exhaust valve to be in open state in a temperature lowering process of lowering the temperature of the substrate to be less than the target temperature.