Patent ID: 6095335
Filing Date: 2000-08-01
Classification: H01L,Y10S

Abstract:
A retrofit device for a FOUP having first ribs that provide support for an array of large diameter semiconductor wafers having aligned rest positions, said first ribs extending along opposite sides of a first wafer-storage area of said FOUP, said retrofit device comprising:at least one insert configured for removable attachment to said FOUP in a position such that second ribs are coplanar with said first ribs, said second ribs being cooperative to provide support for small diameter semiconductor wafers, said second ribs extending along opposite sides of a reduced wafer-storage area for said small diameter semiconductor wafers, said reduced wafer-storage area being coaxial with said first wafer-storage area for said large diameter semiconductor wafers, said reduced wafer-storage area and said first wafer-storage area thereby being concentric, said at least one insert blocking simultaneous support of large and small diameter semiconductor wafers.