Method and apparatus for preparing semiconductor wafers for...

Electric heating – Heating devices – Combined with container – enclosure – or support for material...

Reexamination Certificate

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Details

C219S446100, C219S448140, C219S448170, C219S448120, C392S416000

Reexamination Certificate

active

06861619

ABSTRACT:
A wafer-cleaning module can remove contaminants from a semiconductor wafer prior to measurement in a metrology tool. A heating chamber and heater plate of the cleaning module can be used to heat the wafer by conduction, while a separate cooling chamber can be used to cool the wafer. The system is controlled by a processor so the heating cycle, cooling cycle and the time periods between these cycles and the measurement cycle are uniform for all wafers.

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