摘要:
The present invention relates generally to the field of design automation. More particularly, the present invention relates to a system and method for the modeling of circuit components for use by a simulator. The present invention includes a model of a circuit component having a plurality of properties that depend on at least two variables comprising: a space defined by the two or more variables; a partition of said space comprising a plurality of regions wherein at least two of the properties share said partition; and at least one definition representing at least one of the properties in at least one of the regions.
摘要:
A method of generating training spectra for training of a neural network includes measuring a first plurality of training spectra from one or more sample substrates, measuring a characterizing value for each training spectra of the plurality of training spectra to generate a plurality of characterizing values with each training spectrum having an associated characterizing value, measuring a plurality of dummy spectra during processing of one or more dummy substrates, and generating a second plurality of training spectra by combining the first plurality of training spectra and the plurality of dummy spectra, there being a greater number of spectra in the second plurality of training spectra than in the first plurality of training spectra. Each training spectrum of the second plurality of training spectra having an associated characterizing value.
摘要:
A method of processing substrates includes: subjecting each respective first substrate of a first plurality of substrates to a process that modifies a thickness of an outer layer of the respective first substrate; generating a plurality of groups of process parameter values, wherein the plurality of process parameters comprise a plurality of control parameters and a plurality of state parameters; generating a plurality of measured removal profiles; generating a matrix that relates the plurality of process parameters to a calculated removal profile; for each respective second substrate of a second plurality of substrates, determining a target removal profile and a plurality of state parameter values; calculating respective control parameter values to apply to the respective second substrate by applying the target removal profile and the state parameter values to the matrix; and subjecting each respective second substrate to the process using the respective process parameter values.
摘要:
A method of controlling polishing includes storing a base measurement, the base measurement being an eddy current measurement of a substrate after deposition of at least one layer overlying a semiconductor wafer and before deposition of a conductive layer over the at least one layer, after deposition of the conductive layer over the at least one layer and during polishing of the conductive layer on substrate, receiving a sequence of raw measurements of the substrate from an in-situ eddy current monitoring system, normalizing each raw measurement in the sequence of raw measurement to generate a sequence of normalized measurements using the raw measurement and the base measurement, and determining at least one of a polishing endpoint or an adjustment for a polishing rate based on at least the sequence of normalized measurements.
摘要:
During polishing of a substrate at a first platen and prior to a first time, a first sequence of values is obtained for a first zone of the first substrate and a second sequence of values is obtained for a different second zone of the substrate with an in-situ monitoring system. A first function is fit to a portion of the first sequence of values obtained prior to the first time, and a second function is fit to a portion of the second sequence of values obtained prior to the second time. At least one polishing parameter is adjusted based on the first fitted function and the second fitted function so as to reduce an expected difference between the zones. A second substrate is polished on the first platen using an adjusted polishing parameter calculated based on the first fitted function and the second fitted function.
摘要:
A substrate having a plurality of zones is polished and spectra are measured. For each zone, a first linear function fits a sequence of index values associated with reference spectra that best match the measured spectra. A projected time at which a reference zone will reach the target index value is determined based on the first linear function, and for at least one adjustable zone, a polishing parameter adjustment is calculated such that the adjustable zone has closer to the target index at the projected time than without such adjustment. The adjustment is calculated based on a feedback error calculated for a previous substrate. The feedback error for a subsequent substrate is calculated based on a second linear function that fits a sequence of index values associated with reference spectra that best match spectra measured after the polishing parameter is adjusted.
摘要:
A method and apparatus to regulate voltage used to power an ASIC comprising an ASIC having a signal source and a modulator. The modulator establishes a characteristic of a signal created by the signal source to indicate a voltage level to be used to power the ASIC. The signal is communicated to a voltage regulator to apply an optimal voltage to the ASIC.
摘要:
A method of determining a physical property of a substrate includes recording a first spectrum obtained from a substrate, the first spectrum being obtained during a polishing process that alters a physical property of the substrate. The method includes identifying, in a database, at least one of several previously recorded spectra that is similar to the recorded first spectrum. Each of the spectra in the database has a physical property value associated therewith. The method includes generating a signal indicating that a first value of the physical property is associated with the first spectrum, the first value being determined using the physical property value associated with the identified previously recorded spectrum in the database. A system for determining a physical property of a substrate includes a polishing machine, an endpoint determining module, and a database.
摘要:
A method of determining a physical property of a substrate includes recording a first spectrum obtained from a substrate, the first spectrum being obtained during a polishing process that alters a physical property of the substrate. The method includes identifying, in a database, at least one of several previously recorded spectra that is similar to the recorded first spectrum. Each of the spectra in the database has a physical property value associated therewith. The method includes generating a signal indicating that a first value of the physical property is associated with the first spectrum, the first value being determined using the physical property value associated with the identified previously recorded spectrum in the database. A system for determining a physical property of a substrate includes a polishing machine, an endpoint determining module, and a database.
摘要:
FIG. 1 is a perspective view of a pet playpen, showing our new design; FIG. 2 is another perspective view thereof; FIG. 3 is a front view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a left side view thereof; FIG. 6 is a right side view thereof; FIG. 7 is a top plan view thereof; FIG. 8 is a bottom plan view thereof; and, FIG. 9 is an enlargement view of FIG. 1. The dot-dashed broken lines represent the boundary of the enlarged portion and form no part of the claimed design.