Patent ID: 6640151
Filing Date: 2003-10-28
Classification: H01L

Abstract:
A method of processing wafers in a wafer processing facility, said wafer processing facility comprising at least two wafer processing tools, each for providing a distinct function, the method comprising the steps of:(1) dispositioning, by the wafer processing facility, a discrete number of wafers to be processed; (2) conveying, to said at least two wafer processing tools, a request to produce a specified product from each of said discrete number of wafers, and determining from said at least two wafer processing tools whether said request can be granted; (3) upon determining in said step (2) that said specified product can be produced, accessing an initial recipe, said initial recipe for directing said discrete number of wafers through a plurality of process steps using said at least two wafer processing tools, to produce said specified product; (4) upon receipt of information relating to a characteristic of at least one of said discrete number of wafers: (i) modifying, where required, at least one of said process steps of said initial recipe for said at least one of said discrete number of wafers, (ii) continuing to utilize said initial recipe for those of said discrete number of wafers not modified by said step (i); (5) storing said modification made to said initial recipe for said one of said discrete number of wafers, for potential future use.