Patent ID: 11927392
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC F  H | IPC F  H

Claim 13:
14. A wafer drying system, comprising:
a wafer holder configured to hold and spin a wafer;
a gas outlet configured to dispense a gas over the wafer to dry the wafer;
an analyzer configured to determine a property of a portion of the gas; and
a control unit configured to:
control a feedback operation of the wafer drying system based on a comparison between a concentration of a real time property of the portion of the gas and a baseline;
initiate a removal operation in response to the concentration of the contaminant being equal to or less than the baseline; and
initiate a rework operation in response to the concentration of the contaminant being greater than the baseline.