Patent Document ID: 20160327605
Application ID: 15148116
Patent Flag: 0

Claim One:
1. A measurement system comprising: an illumination source configured to illuminate each of a plurality of metrology targets disposed a first plurality of locations on a wafer, the wafer also including a plurality of hot spot structures at a second plurality of locations on the wafer that are different from the first plurality of locations, the wafer being illuminated by the illumination source after an intermediate process step of a semiconductor wafer fabrication sequence; a detector configured to detect an amount of light from each of the plurality of metrology targets in response to the illuminating of each of the plurality of metrology targets and generate an amount of measurement data based on the detected amounts of light; and a computing system configured to: determine a value of at least one parameter characterizing a hot spot structure of the plurality of hot spot structures based on the amount of measurement data and a trained hot spot measurement model; and communicate a signal to a process tool that causes the process tool to adjust a process parameter associated with a fabrication process step of the semiconductor wafer fabrication sequence based on the value of the at least one parameter characterizing the hot spot structure.