Artificial Neural Network for Diffraction Based Overlay Measurement
Diffraction-based overlay (DBO) accuracy is critical to the intelligent nanolithography process control for producing advanced semiconductor fabrication nodes. Optical gratings located on various layers are commonly used as the targets for the detection of the overlay displacement offset in DBO meas...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
IEEE
2016-01-01
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Series: | IEEE Access |
Subjects: | |
Online Access: | https://ieeexplore.ieee.org/document/7592879/ |