Patent ID: 6394733
Filing Date: 2002-05-28
Classification: H01L,Y10S

Abstract:
A substrate body transfer apparatus which has the ability to transfer substrate bodies between an interior space of an air conveyance apparatus and an interior space of an external processing apparatus without exposing the substrate bodies to the external atmosphere, said transfer apparatus comprises:a vacuum container, the internal pressure of which can be reduced; a partition which divides the interior of said vacuum container into two chambers, that is an upper space chamber and a lower space chamber; said upper space chamber having an opening which communicates with the interior space of said external processing apparatus; said lower space chamber having an opening which communicates with the interior space of said air conveyance apparatus; a circular opening which is provided in the center of said partition; valve seats which are provided in both the upper and lower surfaces along the periphery of said circular opening; a horizontal disc-shaped upper part valve, which is positioned within said upper space chamber, and may be raised and lowered; a horizontal disc-shaped lower part valve, which is positioned within said lower space chamber, on which a substrate body is positioned, and which may be raised and lowered; a means for raising and lowering the entirety of said upper part valve; and a means for raising and lowering the entirety of said lower part valve.