摘要:
A method includes providing a plurality of failure dies, and performing a chip probing on the plurality of failure dies to generate a data log comprising electrical characteristics of the plurality of failure dies. An automatic net tracing is performed to trace failure candidate nodes in the failure dies. A failure layer analysis is performed on results obtained from the automatic net tracing. Physical failure analysis (PFA) samples are selected from the plurality of failure dies using results obtained in the step of performing the failure layer analysis.
摘要:
A method for monitoring overlay of a direct-write system. The method includes providing a substrate having a pattern formed thereon by the direct-write system, generating data associated with the substrate pattern, decomposing the data by applying a transformation matrix, and determining an overlay index based on the decomposed data, the overlay index corresponding to a variation component of the substrate pattern relative to a target pattern.
摘要:
A method for monitoring overlay of a direct-write system. The method includes providing a substrate having a pattern formed thereon by the direct-write system, generating data associated with the substrate pattern, decomposing the data by applying a transformation matrix, and determining an overlay index based on the decomposed data, the overlay index corresponding to a variation component of the substrate pattern relative to a target pattern.
摘要:
An apparatus, a system and a method are disclosed. An exemplary apparatus includes a wafer processing chamber. The apparatus further includes radiant heating elements disposed in different zones and operable to heat different portions of a wafer located within the wafer processing chamber. The apparatus further includes sensors disposed outside the wafer processing chamber and operable to monitor energy from the radiant heating elements disposed in the different zones. The apparatus further includes a computer configured to utilize the sensors to characterize the radiant heating elements disposed in the different zones and to provide a calibration for the radiant heating elements disposed in the different zones such that a substantially uniform temperature profile is maintained across a surface of the wafer.
摘要:
A method comprises computing respective regression models for each of a plurality of failure bins based on a plurality of failures identified during wafer electrical tests. Each regression model outputs a wafer yield measure as a function of a plurality of device performance variables. For each failure bin, sensitivity of the wafer yield measure to each of the plurality of device performance variables is determined, and the device performance variables are ranked with respect to sensitivity of the wafer yield measure. A subset of the device performance variables which have highest rankings and which have less than a threshold correlation with each other are selected. The wafer yield measures for each failure bin corresponding to one of the selected subset of device performance variables are combined, to provide a combined wafer yield measure. At least one new process parameter value is selected to effect a change in the one device performance variable, based on the combined wafer yield measure. The at least one new process parameter value is to be used to process at least one additional wafer.
摘要:
The present disclosure provides a semiconductor manufacturing method. The method includes performing a first process to a wafer; measuring the wafer for wafer data after the first process; securing the wafer on an E-chuck in a processing chamber; collecting sensor data from a sensor embedded in the E-chuck; adjusting clamping forces to the E-chuck based on the wafer data and the sensor data; and thereafter performing a second process to the wafer secured on the E-chuck in the processing chamber.
摘要:
A system and method of automatically calculating boundaries for a semiconductor fabrication process. The method includes selecting a first parameter for monitoring during a semiconductor fabrication process. A first set of values for the first parameter are received and a group value of the first set is determined. Each value in the first set of values is normalized. A first weighting factor is selected based on a number of values in the first set. The embodiment also includes generating a first and a second boundary value as a function of the weighting factor, the first set normalized values and the group value of the first set and applying the first and second boundary values to control the semiconductor fabrication process.
摘要:
An embodiment is a method for semiconductor processing control. The method comprises identifying a key process stage from a plurality of process stages based on a parameter of processed wafers, forecasting a trend for a wafer processed by the key process stage and some of the plurality of process stages based on the parameter, and dispatching the wafer to one of a first plurality of tools in a tuning process stage. The one of the first plurality of tools is determined based on the trend.
摘要:
An apparatus, a system and a method are disclosed. An exemplary apparatus includes a wafer processing chamber. The apparatus further includes radiant heating elements disposed in different zones and operable to heat different portions of a wafer located within the wafer processing chamber. The apparatus further includes sensors disposed outside the wafer processing chamber and operable to monitor energy from the radiant heating elements disposed in the different zones. The apparatus further includes a computer configured to utilize the sensors to characterize the radiant heating elements disposed in the different zones and to provide a calibration for the radiant heating elements disposed in the different zones such that a substantially uniform temperature profile is maintained across a surface of the wafer.
摘要:
An embodiment is a method for semiconductor processing control. The method comprises identifying a key process stage from a plurality of process stages based on a parameter of processed wafers, forecasting a trend for a wafer processed by the key process stage and some of the plurality of process stages based on the parameter, and dispatching the wafer to one of a first plurality of tools in a tuning process stage. The one of the first plurality of tools is determined based on the trend.