Patent ID: 7077614
Filing Date: 2006-07-18
Classification: H01L

Abstract:
1. A device for sorting wafers stored in cassettes comprising: a housing; a wafer handling device arranged in a chamber configured to be sealed off with respect to the housing, wherein the wafer-handling device accesses a measuring station configured to carry out measurements directly on said wafers; a part for receiving at least two closable cassettes arranged in the housing and separated from said chamber by a partition, said part configured to independently position each received cassette against a related closable opening in said partition, wherein through opening of said closable opening said closable cassette is opened when placed against the opening and placed in communication with said chamber so that said wafer handling device can sort wafers by moving the wafers into and out from one cassette and into an other cassette after opening each of said at least two cassettes; a store for closable cassettes arranged in the housing; and a handling device for closable cassettes arranged in the housing, wherein the store for closable cassettes and the handling device for closable cassettes are separated from the part for receiving at least two cassettes, wherein the part for receiving at least two cassettes comprises a turntable, wherein said turntable comprises two or more levels which are independently rotatable, wherein the turntable is configured to receive one of the at least two cassettes on each of the two or more levels, wherein said turntable is configured to place each of the at least two cassettes in a position against a related closeable opening.