Patent ID: 6747230
Filing Date: 2004-06-08
Classification: B07C,H01L,Y10S

Abstract:
A method for sorting wafers of a chip production operation from an initial state into an end state, the method which comprises:providing the wafers in the initial state such that the wafers are arranged in a given sequence in compartments of a holding device; enabling the wafers to be at least partly identified as elements of a finite sequence based on information carriers; and sorting the wafers into the end state in which each wafer is arranged, as much as possible in accordance with a prescribed sequence, in the compartments of the holding device by: removing a first wafer from a first compartment of the holding device, with a reading device, reading an information carrier of the first wafer to determine a position of the first wafer in the prescribed sequence, subsequently, removing a second wafer from a second compartment corresponding to the position of the first wafer in the prescribed sequence, and moving the first wafer into a compartment corresponding to the position of the first wafer in the prescribed sequence.