Convolutional AutoEncoders for Anomaly Detection in Semiconductor Manufacturing

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Abstract

Semiconductor manufacturing, characterised by its complex processes, demands efficient anomaly detection (AD) systems for quality assurance. This study extends from previous work utilising unsupervised Convolutional AutoEncoders for AD in Semiconductor batch manufacturing by applying the technique to a novel dataset supplied by a local Semiconductor Manufacturer. Our method uses an approach that employs 1-dimensional Convolutional Autoencoders (1d-CAE) to improve AD performance and interpretability through the numerical decomposition of reconstruction errors. Identifying anomalies this way allows engineering resources to explain anomalies more effectively than traditional methods. We validate our approach with experiments, demonstrating its performance in accurately detecting anomalies while providing insights into the nature of these irregularities. The experiments also demonstrate the impact of training setup on detection capability, outlining an efficient framework for determining an optimal hyperparameter set-up in an industrial dataset. The proposed unsupervised learning approach with AE reconstruction error improves model explainability, which is expected to be beneficial for deployment in semiconductor manufacturing, where interpretable and trustworthy results are critical for solution adoption by process engineering teams.
Original languageEnglish
Title of host publication31st Irish Conference on Artificial Intelligence and Cognitive Science
Place of PublicationIEEE
Pages1-6
Number of pages6
Edition31st
ISBN (Electronic)979-8-3503-6021-9
DOIs
Publication statusPublished online - 20 Mar 2024
Event31st Irish Conference on Artificial Intelligence and Cognitive Science - Atlantic Technological University, Donegal, Ireland
Duration: 7 Dec 20238 Dec 2023
Conference number: 31st
https://www.aics.ie/

Publication series

Name2023 31st Irish Conference on Artificial Intelligence and Cognitive Science, AICS 2023

Conference

Conference31st Irish Conference on Artificial Intelligence and Cognitive Science
Abbreviated titleAICS
Country/TerritoryIreland
CityDonegal
Period7/12/238/12/23
Internet address

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Keywords

  • Training
  • Semiconductor device modelling
  • Quality assurance
  • Batch production systems
  • Semiconductor device manufacture
  • Cognitive science
  • Artificial intelligence
  • Anomaly Detection
  • Convolutional AutoEncoder
  • Explainable Reconstruction Error
  • Semiconductor Manufacturing

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