Patent ID: 8443484
Filing Date: 2013-05-21
Classification: H01L

Abstract:
1. A substrate processing apparatus comprising: a processing chamber for processing a substrate; a transfer chamber connected to the processing chamber; an exhaust duct including (1) a first inlet port provided on a bottom of the transfer chamber, and (2) a first exhaust port connected to a gas discharge tube that discharges atmosphere from the processing chamber; and an intake duct including (1) a second inlet port that introduces the gas into the transfer chamber, (2) a blow out port that blows out the gas from the intake duct, and (3) a second exhaust port provided at the bottom of the transfer chamber, a controller that performs control so that the transfer chamber is purged by gas, the controller including a switching unit that switches between a first function of controlling an operation of the exhaust duct and an operation of the intake duct so that the gas in the transfer chamber is exhausted in a set direction, and a second function of controlling the operation of the exhaust duct and the operation of the intake duct so that the gas is circulated through the transfer chamber in an inert gas atmosphere.