Patent ID: 6030459
Filing Date: 2000-02-29
Classification: C23C,H01L

Abstract:
A semiconductor manufacturing apparatus for performing etching, ashing and chemical vapor deposition to form a thin film on a pair of substrates using a gas plasma under a reduced pressure, said apparatus comprising two treatment chambers provided adjacent one another, a first load-lock chamber connected to said treatment chambers and comprising a purge air inlet, means for introducing purge air to said purge air inlet, two second load-lock chambers connected to the first load-lock chamber and comprising a nitrogen purge inlet, means for introducing nitrogen to said nitrogen purge inlet, a disc having four stage units contained in the first load-lock chamber, a vertically movable and rotatable shaft connected to a bottom surface of said disc for vertically moving said disc, rotating said disc in increments of 180.degree. to define said treatment chambers and said second load-lock chambers and carry said substrates from said second load-lock chambers to said treatment chambers simultaneously and means for controlling the first load-lock chamber and the second load-lock chambers at the same pressure.