Abstract
This paper is developed from Higashide et al. (Front Stat Qual Control 9:71–84, 2010). Automatic process control (APC) is frequently used in the semiconductor manufacturing process; however, statistical process control (SPC) is also needed to control the APC controller. This is an earlier paradigm on the integration of SPC and APC. Our viewpoint is different from the earlier one as follows:
-
(a)
APC reinforces SPC.
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(b)
SPC complements APC.
Through case studies on the semiconductor manufacturing process, the remarks above are discussed. Our proposals for the integration of SPC and APC are as follows:
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(a)
The process rate is used as the control characteristic to control the between-subgroup variation.
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(b)
Principal component analysis is applied to control the within-subgroup variation.
These proposals can lead to developments of the traditional \(\bar{X} - R\) charts.
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Nishina, K., Higashide, M., Kawamura, H., Ishii, N. (2012). On the Integration of SPC and APC: APC Can Be a Convenient Support for SPC. In: Lenz, HJ., Schmid, W., Wilrich, PT. (eds) Frontiers in Statistical Quality Control 10. Frontiers in Statistical Quality Control, vol 10. Physica, Heidelberg. https://doi.org/10.1007/978-3-7908-2846-7_8
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