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Initial results on the development of a new wafer inspection paradigm

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3 Author(s)
El Doker, T.A. ; Machine Perception Lab., Northern Arizona Univ., Flagstaff, AZ, USA ; King, J. ; Scott, D.R.

A new paradigm for wafer inspection is being developed that would resolve many of today's pending wafer inspection issues. This paradigm integrates 1) a DRAM fabrication line simulation model, producing synthetic images of "typical" wafer maps and associated defects, to 2) fuzzy clustering/declustering algorithms that identify various defects and 3) a unique defect tracking mechanism to monitor patterns of defects across wafer maps. This approach holds promise for in-line process control by allowing for off-site analysis of fabrication line problems and unsupervised adaptation and optimization of application-specific inspection algorithms. The paper reports on the progress made towards the fulfilment of this paradigm.

Published in:

Image Analysis and Interpretation, 2004. 6th IEEE Southwest Symposium on

Date of Conference:

28-30 March 2004