Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Reexamination Certificate
2007-10-16
2007-10-16
Neckel, Alexa D. (Department: 1753)
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
C204S298120
Reexamination Certificate
active
10810534
ABSTRACT:
A method and system for determining a lifetime of a target for a physical vapor deposition tool (302), has, a mapping table (304a) of criteria for a minimum accumulating rate of Δ wafers fabricated by Δ target life for a target in the tool; and a database (304) recording Δ wafers fabricated by Δ target life for a target in the tool; and a computer (306) retrieving the criteria from the mapping table and entering the criteria in the database; and the tool (302) reporting Δ wafers fabricated by Δ target life for a target in the tool (302) for comparison with the criteria.
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Chang Hui Wen
Chao Chang Hui
Wu Hong Yi
Band Michael
Duane Morris LLP
Neckel Alexa D.
Taiwan Semiconductor Manufacturing Company
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