Patent ID: 9612108
Date: 2017-04-04
CPC Classifications: G01B,G01J,G01N

Claim:
1. A measurement apparatus comprising: a library creation processor programmed to create a library in which a layer stack model is matched to a theoretical profile regarding a pattern constituted by a plurality of stacked layers, the theoretical profile being obtained by calculating a spectral profile expected when light is applied to the layer stack model; a detector configured to output an actual measured profile acquired by applying light to a measurement target pattern obtained when the pattern is actually created; and a measurement processor programmed to measure the sectional shape of the measurement target pattern by performing fitting of the theoretical profile in the library to the actual measured profile, wherein the library creation processor creates the layer stack model by calculating a feature value that reflects the intensity of reflected light from an interface for each of the layers, determining a priority order of analysis from the feature value of the plurality of stacked layers, and sequentially performing fitting of the theoretical profile to the measured profile in the determined priority order.