Patent ID: 6176667
Filing Date: 2001-01-23
Classification: H01L,Y10S

Abstract:
A system for treating semiconductor wafers comprising:a wafer storage mechanism for storing a plurality of wafers;at least one set of wafer processing chambers having at least a first wafer processing chamber and a second wafer processing chamber stacked one above the other, the first wafer processing chamber for carrying out a first semiconductor fabrication process consisting of a chemical vapor deposition process, a plasma vapor deposition process, or an epitaxial deposition process, and the second wafer processing chamber for carrying out a second semiconductor fabrication process different from the first semiconductor fabrication process consisting of a chemical vapor deposition process, a plasma vapor deposition process, or an epitaxial deposition process;a wafer transfer chamber coupled to the wafer storage mechanism and to the first wafer processing chamber and the second wafer processing chamber to enable wafers from the wafer storage mechanism to be transported to the first wafer processing chamber and the second wafer processing chamber; andwherein the first semiconductor fabrication process is carried out asynchronously with respect to the second process.