applying artificial neural network to predict semiconductor machine outliers
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2013
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Abstract
Advanced semiconductor processes are produced by very sophisticated and complex machines. The demand of higher precision for the monitoring system is becoming more vital when the devices are shrunk into smaller sizes. The high quality and high solution checking mechanism must rely on the advanced information systems, such as fault detection and classification (FDC). FDC can timely detect the deviations of the machine parameters when the parameters deviate from the original value and exceed the range of the specification. This study adopts backpropagation neural network model and gray relational analysis as tools to analyze the data. This study uses FDC data to detect the semiconductor machine outliers. Data collected for network training are in three different intervals: 6-month period, 3-month period, and one-month period. The results demonstrate that 3-month period has the best result. However, 6-month period has the worst result. The findings indicate that machine deteriorates quickly after continuous use for 6 months. The equipment engineers and managers can take care of this phenomenon and make the production yield better.
| Reference Key |
yang2013mathematicalapplying
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| Authors | ;Keng-Chieh Yang;Conna Yang;Pei-Yao Chao;Po-Hong Shih |
| Journal | journal of power sources |
| Year | 2013 |
| DOI |
10.1155/2013/210740
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