Abstract:
Described is a user interface for designing, configuring and/or editing a control flow representing a control strategy associated with a semiconductor manufacturing process, the user interface comprising: a library of control elements comprising at least a control element representing a task of simulation and each control element being selectable by a user; a control flow editor configured to organize said control elements into a control flow representing the control strategy; and a communication interface for communicating the control flow to a calculation engine configured to evaluate the control flow.
Abstract:
A method of measuring a property of a substrate, the substrate having a plurality of targets formed thereon, the method comprising: measuring N targets of the plurality of targets using an optical measurement system, where N is an integer greater than 2 and each of said N targets is measured W t times, where W t is an integer greater than 2 so as to obtain N*W t measurement values; and determining R property values using Q equations and the N*W t measurement values, where R t ; wherein the optical measurement system has at least one changeable setting and, for each of the N targets, measurement values are obtained using different setting values of at least one changeable setting.
Abstract:
Disclosed are a method, computer program and associated apparatuses for measuring a parameter of a lithographic process. The method comprising the steps of: obtaining first measurements comprising measurements of structural asymmetry relating to a plurality of first structures, each of said plurality of measurements of structural asymmetry corresponding to a different measurement combination of measurement radiation and a value for at least a first parameter; obtaining a plurality of second measurements of target asymmetry relating to a plurality of targets, each of said plurality of measurements of target asymmetry corresponding to one of said different measurement combinations, determining a relationship function describing the relationship between said first measurements and said second measurements, for each of said measurement combinations; determining, from said relationship function, a corrected overlay value, said corrected overlay value being corrected for structural contribution due to structural asymmetry in at least said first structure.
Abstract:
Described is a user interface for designing, configuring and/or editing a control flow representing a control strategy associated with a semiconductor manufacturing process, the user interface comprising: a library of control elements comprising at least a control element representing a task of simulation and each control element being selectable by a user; a control flow editor configured to organize said control elements into a control flow representing the control strategy; and a communication interface for communicating the control flow to a calculation engine configured to evaluate the control flow.
Abstract:
Disclosed is a method for performing a lithographic apparatus setup calibration and/or drift correction for a specific lithographic apparatus of a population of lithographic apparatuses to be used in a manufacturing process for manufacturing an integrated circuit extending across a plurality of layers on a substrate. The method comprises determining a spatial error distribution of an apparatus parameter across spatial coordinates on the substrate for each lithographic apparatus of the population of lithographic apparatuses and/or each layer of the plurality of layers; determining a reference distribution by aggregating each of the spatial error distributions to optimize the reference distribution such that a spatial distribution of a parameter of interest of the manufacturing process is co-optimized across the population of lithographic apparatuses and/or plurality of layers; and using the reference distribution as a target distribution for the apparatus parameter for each lithographic apparatus and/or layer.
Abstract:
Described is a user interface for designing, configuring and/or editing a control flow representing a control strategy associated with a semiconductor manufacturing process. The user interface comprises a library of control elements, each control element being selectable by a user, a control flow editor configured to organize said control elements into a control flow representing the control strategy; and a communication interface for communicating the control flow to a calculation engine configured to evaluate the control flow.
Abstract:
A method of measuring a property of a substrate, the substrate having a plurality of targets formed thereon, the method comprising: measuring N targets of the plurality of targets using an optical measurement system, where N is an integer greater than 2 and each of said N targets is measured W t times, where W t is an integer greater than 2 so as to obtain N*W t measurement values; and determining R property values using Q equations and the N*W t measurement values, where R t ; wherein the optical measurement system has at least one changeable setting and, for each of the N targets, measurement values are obtained using different setting values of at least one changeable setting.