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METHODS FOR POST - EPITAXIAL WARP PREDICTION AND CONTROL
METHODS FOR POST - EPITAXIAL WARP PREDICTION AND CONTROL
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机译:疫情后预警和控制的方法。
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摘要
In one aspect, a method of predicting warp in a plurality of wafers after an epitaxial layer deposition process is provided. The method includes receiving, by a processor, a measured resistivity of a first wafer of the plurality of wafers, receiving, by the processor, a measured shape of the first wafer after at least one of a grinding process and an etching process, and calculating, using the processor, a change in wafer shape during the epitaxial layer deposition process. The method further includes superposing, using the processor, the calculated shape change onto the measured shape of the first wafer to determine a post-epitaxial wafer shape and calculating, using the processor, a post-epitaxial warp value based on the determined post-epitaxial wafer shape.
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