A depthwise convolutional neural network model based on active contour for multi-defect wafer map pattern classification

IF 7.5 2区 计算机科学 Q1 AUTOMATION & CONTROL SYSTEMS
Jeonghoon Choi, Dongjun Suh
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引用次数: 0

Abstract

As semiconductor manufacturing processes continue to witness increased integration density and design complexity, semiconductor wafers are experiencing a growing diversity and complexity of defects. While previous research in wafer map classification using deep learning has made significant advancements in dealing with single defect patterns, the classification of mixed-type defects has received less attention due to their considerably higher difficulty level compared to single defects. This research addresses this critical gap, emphasizing the need for improved methods to classify mixed-type defects, which are more complex and challenging. To tackle this challenge, this paper introduces the active contour-based lightweight depthwise network (AC-LDN) model for the classification of multi-defect wafer map patterns. Initially, multi-defect features are extracted using an active contour-based segmentation model. Subsequently, the learning model employs a depthwise convolutional neural network (CNN) architecture that combines separable CNN and dilated CNN techniques. This unique approach optimizes the model in the separable segment while effectively addressing defect complexity in the depthwise segments. Consequently, AC-LDN outperforms other state-of-the-art models, offering a balance between lightweight characteristics and high accuracy. The proposed method demonstrates its superiority over previous models when evaluated on the extsdsensive multi-wafer map dataset, achieving an average classification accuracy exceeding 98% and a confusion matrix coefficient surpassing 0.97.
基于主动轮廓的深度卷积神经网络模型,用于多缺陷晶片图模式分类
随着半导体制造工艺的集成密度和设计复杂性不断提高,半导体晶片缺陷的多样性和复杂性也在不断增加。以往利用深度学习进行晶圆图分类的研究在处理单一缺陷模式方面取得了重大进展,但混合型缺陷的分类却较少受到关注,因为与单一缺陷相比,混合型缺陷的难度要高得多。本研究弥补了这一重大缺陷,强调需要改进混合型缺陷的分类方法,因为混合型缺陷更为复杂,更具挑战性。为了应对这一挑战,本文引入了基于主动轮廓的轻量级深度网络(AC-LDN)模型,用于多缺陷晶片图模式的分类。首先,使用基于主动轮廓的分割模型提取多缺陷特征。随后,学习模型采用深度卷积神经网络(CNN)架构,该架构结合了可分离 CNN 和扩张 CNN 技术。这种独特的方法优化了可分离分段中的模型,同时有效解决了深度分段中的缺陷复杂性。因此,AC-LDN 超越了其他最先进的模型,在轻量级特性和高精度之间取得了平衡。在外部密集型多晶片地图数据集上进行评估时,所提出的方法证明了其优于以往模型的性能,平均分类准确率超过 98%,混淆矩阵系数超过 0.97。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Engineering Applications of Artificial Intelligence
Engineering Applications of Artificial Intelligence 工程技术-工程:电子与电气
CiteScore
9.60
自引率
10.00%
发文量
505
审稿时长
68 days
期刊介绍: Artificial Intelligence (AI) is pivotal in driving the fourth industrial revolution, witnessing remarkable advancements across various machine learning methodologies. AI techniques have become indispensable tools for practicing engineers, enabling them to tackle previously insurmountable challenges. Engineering Applications of Artificial Intelligence serves as a global platform for the swift dissemination of research elucidating the practical application of AI methods across all engineering disciplines. Submitted papers are expected to present novel aspects of AI utilized in real-world engineering applications, validated using publicly available datasets to ensure the replicability of research outcomes. Join us in exploring the transformative potential of AI in engineering.
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