An empirical study on fault detection and root cause analysis of indium tin oxide electrodes by processing S-parameter patterns

• Verfasst von: Kang, Tae Yeob [VerfasserIn]
• Verfasst von: Lee, Haebom [VerfasserIn]
• Verfasst von: Suh, Sungho [VerfasserIn]
• Titel: An empirical study on fault detection and root cause analysis of indium tin oxide electrodes by processing S-parameter patterns
• Verf.angabe: Tae Yeob Kang, Haebom Lee, and Sungho Suh
• E-Jahr: 2024
• Jahr: September 2024
• Umfang: 10 S.
• Illustrationen: Illustrationen
• Fussnoten: Gesehen am 19.02.2025
• Titel Quelle: Enthalten in: Institute of Electrical and Electronics EngineersIEEE transactions on device and materials reliability
• Ort Quelle: New York, NY : IEEE, 2001
• Jahr Quelle: 2024
• Band/Heft Quelle: 24(2024), 3 vom: Sept., Seite 380-389
• ISSN Quelle: 1558-2574
• DOI: doi:10.1109/TDMR.2024.3415049
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Deep learning
• Sach-SW: Electrodes
• Sach-SW: fault diagnosis
• Sach-SW: Fault diagnosis
• Sach-SW: Indium tin oxide
• Sach-SW: ITO transparent electrodes
• Sach-SW: Materials reliability
• Sach-SW: Performance evaluation
• Sach-SW: Probes
• Sach-SW: root cause analysis
• Sach-SW: S-parameter
• Sach-SW: Scattering parameters
• K10plus-PPN: 1917626738

Abstract

In the field of optoelectronics, indium tin oxide (ITO) electrodes play a crucial role in various applications, such as displays, sensors, and solar cells. Effective fault diagnosis and root cause analysis of the ITO electrodes are essential to ensure the performance and reliability of the devices. However, traditional visual inspection is challenging with transparent ITO electrodes, and existing fault diagnosis methods have limitations in determining the root causes of the defects, often requiring destructive evaluations and secondary material characterization techniques. In this study, a fault diagnosis method with root cause analysis is proposed using scattering parameter (S-parameter) patterns, offering early detection, high diagnostic accuracy, and noise robustness. A comprehensive S-parameter pattern database is obtained according to various defect states of the ITO electrodes. Deep learning (DL) approaches, including multilayer perceptron (MLP), convolutional neural network (CNN), and transformer, are then used to simultaneously analyze the cause and severity of defects. Notably, it is demonstrated that the diagnostic performance under additive noise levels can be significantly enhanced by combining different channels of the S-parameters as input to the learning algorithms, as confirmed through the t-distributed stochastic neighbor embedding (t-SNE) dimension reduction visualization of the S-parameter patterns.