Patent ID: 6333636
Filing Date: 2001-12-25
Classification: H01L

Abstract:
A semiconductor wafer aligning system comprising;a table having a spray opening for upwardly spraying a fluid to form a fluid surface on which a semiconductor wafer floats; anda guide disposed on the table, for contacting the wafer at a circumferential edge of the wafer, wherein the fluid flows horizontally after being sprayed upward, and the wafer floats horizontally on a surface of the fluid to a correct wafer location;wherein the guide comprises;a left guide for contacting the wafer along one portion of the circumferential edge of the wafer;a right guide for contacting the wafer along another portion of the circumferential edge of the wafer; anda drive mechanism connected to the left and right guides, disposed outside a peripheral edge of the spray opening, for varying a separation distance between the left guide and the right guide.