Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Radiation mask
Reexamination Certificate
2011-03-22
2011-03-22
Rosasco, Stephen (Department: 1721)
Radiation imagery chemistry: process, composition, or product th
Radiation modifying product or process of making
Radiation mask
C430S311000, C700S121000
Reexamination Certificate
active
07910269
ABSTRACT:
A photomask for integrated circuit production comprising a substrate, one or more layers and a detector for monitoring a process parameter of the integrated circuit production in combination with one or more of the following: communication circuitry for communicating with external equipment for the integrated circuit production, a computational processor for analyzing the monitored process parameter, and a data storage component. In addition, a method of integrated circuit production comprising the steps of providing a photomask in the integrated circuit production process and monitoring a process parameter of the integrated circuit production using the photomask, in combination with one or more following steps: analyzing the monitored process parameter using the photomask; communicating the monitored process parameter from the photomask to external equipment involved in the integrated circuit production; and storing the monitored process parameter in the photomask. For example, the photomask embodying aspects of the present invention may monitor and track the process parameter of a stepper during the integrated circuit production. The monitored data may be analyzed against the production information to determine possible adjustment or alteration to the integrated circuit production steps.
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Amster Rothstein & Ebenstein LLP
Fraser Stewart A
Photronics, Inc.
Rosasco Stephen
LandOfFree
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