Patent ID: 11892382
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A semiconductor fabrication facility, comprising:
a clean room;
a sub-clean room located underneath the clean room and separated from the clean room by a raised floor;
a plurality of gas lines extending from the clean room to the sub-clean room, wherein each of the gas lines comprises a gas inlet, and the gas inlets are positioned at different sampling positions in the clean room;
a plurality of metrology devices, wherein each of the metrology devices is connected with one of the gas lines and configured to independently measure a parameter of an ambient air collected from the sampling positions by the one of the gas lines; and
a database server configured to process measurement results produced by the metrology devices and to identify an abnormity while the parameter is outside a range of acceptable values.