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Measurement procedures in the batch manufacturing process of individual products and methods and systems for assessing the uncertainties arising from the measurements
Measurement procedures in the batch manufacturing process of individual products and methods and systems for assessing the uncertainties arising from the measurements
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机译:单个产品的批量生产过程中的测量程序以及评估测量结果不确定性的方法和系统
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摘要
In the testing of certain discrete devices, such as integrated circuits, it has been found that variations in measurements are often caused by error terms from the measurement equipment and process. The invention provides a statistical process control (SPC) method and apparatus that determines the errors introduced by the measurement equipment and process. Statistical processes are provided to compensate for these errors and improve the accuracy of the testing process. The measurement errors are based upon repeated independent measurements of select parameters of each unit tested.
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