Patent ID: 6457929
Filing Date: 2002-10-01
Classification: H01L,Y10S

Abstract:
An apparatus for transferring wafers between wafer holders in a liquid contained in a transfer chamber, comprising:the transfer chamber containing the liquid; a first stand disposed in the liquid in the transfer chamber; a first lift for supporting the first wafer holder; a second stand disposed in the liquid in the transfer chamber at a spaced location from the first stand; and a second lift disposed in the liquid in the transfer chamber for supporting the second wafer holder; and a transfer unit operable to (i) move the first lift to transfer in the liquid the at least one wafer from the first wafer holder to the first stand, (ii) move the at least one wafer in the liquid to transfer in the liquid the at least one wafer from the first stand to the second stand, the at least one wafer remaining in the liquid during the transfer from the first stand to the second stand, and (iii) move the second lift to transfer in the liquid the at least one wafer from the second stand to the second wafer holder supported on the second lift, the second wafer holder being removable from the liquid.