Patent ID: 7207340
Filing Date: 2007-04-24
Classification: A62D,B01D,B01J,H01L,Y10S

Abstract:
1. A gas removal system, that removes a halogen gas remaining inside a processing chamber after executing processing inside said processing chamber in an airtight state and obtaining plasma through discharge dissociation of a process gas, which contains the halogen gas supplied from a process gas supply system, comprising: a pressure control device that controls the pressure inside said processing chamber; an air supply device that supplies atmospheric air into said processing chamber after lowering the pressure inside said processing chamber with said pressure control device, a control device that controls said air supply device; an evacuation device that evacuates a gas produced through a reaction of the halogen gas and the atmospheric air having occurred in said processing chamber; and a sensor that detects an extent to which said processing chamber is opened to the atmosphere by said atmosphere opening device.