Patent ID: 7974801
Filing Date: 2011-07-05
Classification: G05B,H01L,Y02P

Abstract:
1. A method, comprising: obtaining, at a data processing system, measurement data from a subset of substrates selected from a group of substrates after performing a first sequence of manufacturing processes on the group of substrates in a manufacturing environment configured to produce semiconductor devices on the basis of a predefined overall manufacturing flow, said first sequence comprising at least one production process and at least one metrology process; predicting, using the data processing system, a plurality of electrical characteristics of the semiconductor devices formed on the sample substrates using a model that represents the correlation of the plurality of electrical characteristics to said measurement data and a plurality of errors that represent a statistical deviation of the actual electrical characteristics from the predicted electrical characteristics; and predicting, using the data processing system, a quality distribution for substantially all of said group of substrates by using said plurality of electrical characteristics predicted for the sample substrates and co-variances of the plurality of errors.