Measuring and testing – Inspecting
Reexamination Certificate
2008-05-06
2011-11-22
Rogers, David A. (Department: 2856)
Measuring and testing
Inspecting
C073S086000, C073S865600, C073S866000
Reexamination Certificate
active
08061224
ABSTRACT:
Embodiments of the invention provide a method of determining a storage lifetime of a wafer in a storage environment, the storage environment corresponding to an environment having a first value of temperature and a first value of relative humidity, the wafer having a pre-test value of a first contamination parameter, including the steps of: subjecting the wafer to a test environment for a test period, the test environment includes an environment having a second value of temperature and a second value of relative humidity; subsequently, inspecting the wafer thereby to determine a post-test value of a second contamination parameter, wherein the second value of relative humidity is greater than 30% and the second value of wafer temperature is greater than 30° C.
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Hua Younan
Li Kun
Nistala Ramesh Rao
Zhao Siping
GLOBALFOUNDRIES Singapore Pte. Ltd.
Horizon IP Pte Ltd
Rogers David A.
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