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An oversampling method for wafer map defect pattern classification considering small and imbalanced data

delete2021-12-01
delete19
PRE
AI
E
Eun‐Su Kim
S
Seung-Hyun Choi
D
Dong‐Hee Lee *
K
Kwang-Jae Kim
Y
Young-Mok Bae
Y
Young-Chan Oh
DOI:10.1016/j.cie.2021.107767delete
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摘要

摘要

En 中文
晶片由几个芯片组成,晶片图显示了晶片上有缺陷的芯片的位置。晶片图上缺陷芯片的位置图案为改进半导体晶片制造工艺提供了关键信息。最近,使用卷积神经网络 (CNN) 的自动缺陷模式分类由于其良好的分类性能而变得流行。只有当大量平衡的训练和测试数据可用时,才能保证良好的性能。但是,由于训练和测试数据是通过人工检查获得的,因此在实际中很难获得这些数据。在本文中,我们提出了一种系统的方法来解决小而不平衡的晶圆图数据问题。具体来说,我们首先选择显示清晰缺陷图案的晶片,然后通过随机应用水平翻转、垂直翻转和旋转来复制它们。在案例研究中,我们从一家半导体晶圆公司获得了真实的晶圆图数据。通过应用所提出的方法,获得了大量均衡的数据。将CNN缺陷分类模型拟合到所获得的数据中,显示出良好的分类性能。
Keyword:
Imbalanced data
Small data
Wafer bin map
Defect pattern classification
Oversampling
Convolutional neural networks

期刊

Computers and Industrial Engineering 封面图
Computers and Industrial Engineering
IF:
6.5
论文数:
1.0W
被引数:
3.8W

机构

S
SK Hynix
学者数:
209
论文数: 143
被引数: 1
S
sk group
学者数:
799
论文数: 611
被引数: 3
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