Automated model building and model updating
View Patent ↗A system and computer-implemented method for creating a new model or updating a previously-created model based on a template are described. A template is generated from a previously-created model. The previously-created model specifies a set of parameters associated with a manufacturing process, a process tool or chamber. Variables associated with the manufacturing process are acquired, monitored, and analyzed. A statistical analysis (or multivariate statistical analysis) is employed to analyze the monitored variables and the set of parameters. When any of the monitored variables satisfy a threshold condition, a new model is created or the parameters of the previously-created model are updated, adjusted, or modified based on the template and the monitored variables. A user interface facilitating communication between a user and the systems and display of information is also described.
1. A multivariate analytical system comprising:
a processor;
a template-generating module in communication with the processor to generate a first template based on a previously-created model that includes a first set of parameters defining at least a portion of a manufacturing process;
a data acquisition module in communication with a processing tool to acquire or monitor one or more variables during the manufacturing process and provide information associated with the one or more variables to a model-generating module;
the model-generating module to generate a new model having a second set of parameters, the new model being generated according to a statistical analysis based on the first template and the one or more variables upon the one or more variables satisfying a threshold condition, wherein the one or more variables satisfy the threshold condition when the statistical analysis of the one or more variables results in a value that exceeds a threshold value; and
a basket or cache module to provide data to the model-generating module or the template-generating module in response to a user selection or the one or more variables satisfying the threshold condition.
2. The system of claim 1 , wherein the one or more variables to be monitored are specified by a user.
3. The system of claim 1 , wherein the threshold condition is specified by a user.
4. The system of claim 1 , wherein any of the one or more variables satisfying the threshold condition triggers creating the new model.
5. The system of claim 1 , wherein the one or more variables comprise time, occurrence of periodic or preventive maintenance, a result of metrology verification, a number of wafers processed, or any combination thereof.
6. The system of claim 1 , wherein the multivariate statistical analysis involves a Hotelling-type calculation, a DModX-type calculation, a principal component analysis-type calculation, a weighted moving average-type calculation, or any combination thereof.
7. The system of claim 1 , wherein the new model specifies parameters for a process tool, chamber, or recipe from which the one or more variables were monitored or for a second process tool, chamber, or recipe.
8. The system of claim 1 , wherein the first set of parameters comprise metrology, time, duration of use of a process tool, number of wafers processed, occurrence of periodic or preventive maintenance, sequence of wafers processed, or any combination thereof.
9. The system of claim 1 wherein the statistical analysis is a multivariate statistical analysis.
10. The system of claim 9 , wherein the multivariate statistical analysis involves a Hotelling-type calculation, a DModX-type calculation, a principal component analysis-type calculation, a weighted moving average-type calculation, or any combination thereof.
11. A multivariate analytical system comprising:
a processor;
a template-generating module in communication with the processor to generate a first template based on a previously-created model that includes a first set of parameters defining at least a portion of a manufacturing process;
a data acquisition module in communication with a processing tool to acquire or monitor one or more variables during the manufacturing process and provide information associated with the one or more variables to a model-generating module;
the model-generating module to generate a new model having a second set of parameters, the new model being generated according to a statistical analysis based on the first template and the one or more variables upon the one or more variables satisfying a threshold condition, wherein the one or more variables satisfy the threshold condition when the statistical analysis of the one or more variables results in a value that exceeds a threshold value, wherein the new model comprises the previously-created model and the second set of parameters comprises the values of the first set of parameters adjusted based on the template and the one or more variables.
12. A multivariate analytical system comprising:
a processor;
a template-generating module in communication with the processor to generate a first template based on a previously-created model that includes a first set of parameters defining at least a portion of a manufacturing process;
a data acquisition module in communication with a processing tool to acquire or monitor one or more variables during the manufacturing process and provide information associated with the one or more variables to a model-generating module;
the model-generating module to generate a new model having a second set of parameters, the new model being generated according to a statistical analysis based on the first template and the one or more variables upon the one or more variables satisfying a threshold condition, wherein the one or more variables satisfy the threshold condition when the statistical analysis of the one or more variables results in a value that exceeds a threshold value; and
a user interface including:
(a) a first area including one or more fields available for input of information by a user, the information corresponding to a value of a parameter of the template, and the first area including a command portion in communication with the template-generating module for, in response to the user selecting the command portion, issuing a command to create the template;
(b) a second area displaying one or more unique identifiers associated with each of a set of wafers having one or more data values, the one or more unique identifiers selectable by the user;
(c) a third area for displaying a subset of the one or more unique identifiers corresponding to a subset of wafers selected by the user;
(d) a fourth area in communication with the model-generating module for at least one of creating the new model or updating the previously-created model in response to the user selecting the fourth area, wherein the new model is created or the previously-created model is updated according to a statistical analysis based on the template and the one or more data values associated with the subset of wafers.
13. The system of claim 12 , wherein the user interface further comprises:
(e) a fifth area having one or more conditions selectable by the user; and
an analyzer module in communication with the fifth area and the model-generating module for, upon determining that the one or more user-selectable conditions have been satisfied, communicating a signal to the model-generating module to create the new model or update the previously-created model.