摘要:
Alignment data from an exposure tool suitable for exposing a plurality of semiconductor wafers are provided, the alignment data including alignment values applied by the exposure tool to respective ones of the plurality of semiconductor wafers at a plurality of measured positions.
摘要:
Methods and systems of alternative overlay calculation and of calculating overlay stability based on alternative overlay settings in a fabrication unit, and a computer readable medium are disclosed being capable of calculating alternative overlay error values based on alignment model parameters, alternative alignment model parameters, and overlay error values for a plurality of measurement positions.
摘要:
Alignment data from an exposure tool suitable for exposing a plurality of semiconductor wafers are provided, the alignment data including alignment values applied by the exposure tool to respective ones of the plurality of semiconductor wafers at a plurality of measured positions.
摘要:
A method of calculating an overlay correction model in a unit for the fabrication of a wafer is disclosed. The method comprises measuring overlay deviations of a subset of first overlay marks and second overlay marks by determining the differences between the subset of first overlay marks generated in the first layer and corresponding ones of the subset of second overlay marks generated in the second layer.
摘要:
A method of calculating an overlay correction model in a unit for the fabrication of a wafer is disclosed. The method comprises measuring overlay deviations of a subset of first overlay marks and second overlay marks by determining the differences between the subset of first overlay marks generated in the first layer and corresponding ones of the subset of second overlay marks generated in the second layer.
摘要:
A method and system determines deformations in a substrate in the manufacturing of semiconductor devices. At least one property of vertical deformations of the substrate is measured at a plurality of locations on the substrate. Afterward, an automatic computation of horizontal deformations is determined based on the measured properties of vertical deformations with a model for the deformation behavior of the substrate.
摘要:
A method for simulation of lithography overlay is disclosed which comprises storing alignment parameters used to align a semiconductor wafer prior to a lithography step; storing process control parameters used during the lithography step on the semiconductor wafer; storing overlay parameters measured after the lithography step; calculating alternative alignment parameters and alternative process control parameters. The alternative alignment parameters and the alternative process control parameters are added to cleansed overlay parameters to obtain simulated lithography overlay data.
摘要:
A method for simulation of lithography overlay is disclosed which comprises storing alignment parameters used to align a semiconductor wafer prior to a lithography step; storing process control parameters used during the lithography step on the semiconductor wafer; storing overlay parameters measured after the lithography step; calculating alternative alignment parameters and alternative process control parameters. The alternative alignment parameters and the alternative process control parameters are added to cleansed overlay parameters to obtain simulated lithography overlay data.
摘要:
Methods and systems of alternative overlay calculation and of calculating overlay stability based on alternative overlay settings in a fabrication unit, and a computer readable medium are disclosed being capable of calculating alternative overlay error values based on alignment model parameters, alternative alignment model parameters, and overlay error values for a plurality of measurement positions.
摘要:
A method of calculating an overlay correction model in a unit for the fabrication of a wafer is disclosed. The method comprises measuring overlay deviations of a subset of first overlay marks and second overlay marks by determining the differences between the subset of first overlay marks generated in the first layer and corresponding ones of the subset of second overlay marks generated in the second layer.