Method and device for determining adjustments to sensitivity parameters
A method is described herein including applying, by a metrology apparatus, an incident radiation beam to a substrate including first features on a first layer and second features on a second layer, a relationship between the first and second features being characterized by a parameter of interest ha...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
31.12.2019
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Subjects | |
Online Access | Get full text |
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Summary: | A method is described herein including applying, by a metrology apparatus, an incident radiation beam to a substrate including first features on a first layer and second features on a second layer, a relationship between the first and second features being characterized by a parameter of interest having a first value, wherein the metrology apparatus is operated in accordance with at least one characteristic having a first setting; receiving intensity data representing intensity of a portion of the incident radiation beam scattered by the first and second features; determining, based on the intensity data, a second value of the parameter of interest; and applying one or more adjustments to the at least one characteristic such that the at least one characteristic has a second setting different from the first, the one or more adjustments being determined based on a difference between the first value and the second value. |
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Bibliography: | Application Number: US201816220023 |