Patent ID: 11955391
Assignee: KLA-TENCOR CORPORATION
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method comprising:
providing an amount of x-ray illumination light directed to a measurement spot including one or more structures partially fabricated on a semiconductor wafer;
detecting an amount of x-ray light reflected from or transmitted through the semiconductor wafer in response to the amount of x-ray illumination light;
determining values of one or more parameters of interest associated with the partially fabricated one or more structures based on the detected amount of x-ray light; and
communicating an indication of the values of the one or more parameters of interest to a fabrication tool that causes the fabrication tool to adjust a value of one or more process control parameters of the fabrication tool, wherein the one or more structures partially fabricated on the semiconductor wafer are fabricated at least in part by the fabrication tool.