Patent ID: 8794896
Filing Date: 2014-08-05
Classification: H01L

Abstract:
1. A vacuum processing apparatus comprising: a vacuum processing chamber in which a predetermined processing is performed on a target object under a depressurized pressure; a load lock chamber configured such that an interior atmosphere of the load lock chamber is changed between a substantially atmospheric state and a depressurized state to perform a transfer of the target object between the vacuum processing chamber and a space in the atmospheric state; an atmospheric transfer chamber connected to the load lock chamber; and a zonal airflow generating unit provided between the load lock chamber and the atmospheric transfer chamber, wherein the zonal airflow generating unit includes: wherein the air suctioning portion includes: wherein the impeller is configured to convert the zonal laminar airflow into a vortex so that the zonal laminar airflow converted into the vortex is vertically blown downward and into the air suctioning portion while pulling gas surrounding the vortex into the air suction opening.