Patent ID: 6817822
Filing Date: 2004-11-16
Classification: H01L

Abstract:
A load port for placing a wafer carrier thereon, comprising:a first door for opening and closing a carrier door constituting a face of said wafer carrier; and an atmosphere replacing mechanism for purging atmosphere inside said wafer carrier through an open face of said wafer carrier in the state where said carrier door is open, wherein said atmosphere replacing mechanism comprises: a second door for defining a predetermined space adjacent to said open face from a space in which a laminar flow is performed; an exhaust opening for discharging gas from said predetermined space; and a gas supply port for supplying an inert gas or a dry air into said predetermined space, wherein said atmosphere replacing mechanism further comprises an upper wall for defining said predetermined space with said second door, said upper wall interfering the laminar flow in the vicinity of said open face, and said gas supply port is attached to an under surface of said upper wall.