Patent ID: 7489982
Filing Date: 2009-02-10
Classification: G03F

Abstract:
1. A method for comparing lithography processing time data in semiconductor device manufacturing, said method comprising: obtaining wafer time log data from each of a plurality of lithography tools, said wafer time log data including times observed, measured and recorded at processing operations; parsing said wafer time log data; providing said wafer time log data to a database; querying said database by specifying at least one fixed fabrication parameter of a plurality of fabrication parameters; classifying said wafer time log data according to at least another one of said plurality of fabrication parameters and responsive to said querying; and identifying at least one lithography operation bottleneck based on said wafer time log data in said database, by generating a data display that identifies said at least one lithography operation bottleneck by comparing operation time data between at least one other of said fabrication parameters, said operation time data including wafer processing times and wafer transport times.