Process control using analysis of an upstream process
First Claim
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1. A method, comprising:
- performing a first process on a workpiece;
performing a qualitative analysis relating to said first process performed on said workpiece, said qualitative analysis comprising analyzing at least one metrology measurement relating to said first process and analyzing a workpiece feature, to evaluate a characteristic of said workpiece; and
selecting a process control parameter for performing a second process on said workpiece based upon said qualitative analysis;
wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece;
wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process.
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Abstract
A method, apparatus and a system, for performing a process control using analysis of an upstream process is provided. The method comprises performing a first process on a workpiece and performing a qualitative analysis upon the workpiece relating to the first process, the qualitative analysis comprises analyzing at least one metrology measurement relating to the first process and a workpiece feature to evaluate a characteristic of the workpiece. The method further comprises selecting a process control parameter for performing a second process upon the workpiece based upon the qualitative analysis.
24 Citations
47 Claims
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1. A method, comprising:
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performing a first process on a workpiece; performing a qualitative analysis relating to said first process performed on said workpiece, said qualitative analysis comprising analyzing at least one metrology measurement relating to said first process and analyzing a workpiece feature, to evaluate a characteristic of said workpiece; and selecting a process control parameter for performing a second process on said workpiece based upon said qualitative analysis; wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece; wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method, comprising:
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performing a first process on a workpiece; performing a qualitative analysis relating to said first process performed on said workpiece, said qualitative analysis comprising analyzing at least one metrology measurement relating to said first process and analyzing a workpiece feature to evaluate a characteristic of said workpiece; associating a process recipe to said characteristic of said workpiece; using said process recipe to perform a second process on said workpiece; and selecting a process control parameter for performing said second process on said workpiece based upon said qualitative analysis; wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece;
wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process. - View Dependent Claims (24)
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25. A method, comprising:
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performing a first process on a workpiece; performing a qualitative analysis relating to said first process performed on said workpiece, said qualitative analysis comprising analyzing at least one metrology measurement relating to said first process and analyzing a workpiece feature to evaluate a characteristic of said workpiece; categorizing said workpiece based upon said characteristic of said workpiece to at least one of a first category and a second category; selecting a process control parameter for performing a second process on said workpiece based upon said qualitative analysis; selecting at least one of a first process recipe and a second process recipe respectively corresponding to first and second categories to provide a selected process recipe; and using said selected process recipe to perform a said second process upon said workpiece, wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece;
wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process. - View Dependent Claims (26)
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27. An apparatus, comprising:
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means for performing a first process on a workpiece; means for performing a qualitative analysis relating to said first process performed upon said workpiece, said qualitative analysis comprises analyzing at least one metrology measurement relating to said first process and analyzing a workpiece feature to evaluate a characteristic of said workpiece; and means for selecting a process control parameter for performing a second process upon said workpiece based upon said qualitative analysis wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece;
wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process.
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28. A system, comprising:
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a first processing tool to perform a first process upon a workpiece; a metrology tool to acquire metrology data relating to said first process performed on said workpiece to provide at least one metrology measurement; a second processing tool to perform a second process upon said workpiece; and a process controller operatively coupled to said first and second processing tools, said process controller to qualitatively analyze said metrology measurement relating to said first process and analyzing a workpiece feature to evaluate a characteristic of said workpiece, said process controller also to select a process control parameter for performing said second process upon said workpiece based upon said characteristic of said workpiece; wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece;
wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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37. A computer readable program storage device encoded with instructions that, when executed by a computer, performs a method, comprising:
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performing a first process on a workpiece; performing a qualitative analysis upon said workpiece relating to said first process, said qualitative analysis comprises analyzing at least one metrology measurement relating to said first process and analyzing a workpiece feature to evaluate a characteristic of said workpiece; and selecting a process control parameter for performing a second process upon said workpiece based upon said qualitative analysis; wherein performing said qualitative analysis relating to said first process performed on said workpiece further comprises categorizing a characteristic of said workpiece into one of a plurality of groups, associating a plurality of recipes respectively to each of said groups, and selecting one of said plurality of recipes based upon said categorizing of said characteristic of said workpiece;
wherein selecting one of said plurality of recipes further comprises selecting a recipe that at least partially causes a reduction in copper residue during a copper polishing process. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification