Patent ID: 6446017
Filing Date: 2002-09-03
Classification: G06Q

Abstract:
A method for tracking fabrication information for the manufacture of memory devices, comprising:manufacturing a plurality of wafers, each containing a plurality of memory devices, by performing a plurality of processing steps and storing process data associated with each processing step; assigning a lot number for the plurality of wafers; assigning a part identifier to each of the plurality of memory devices; programming the part identified into a non-volatile section of each of the plurality of memory devices; associating the lot number with the part identifier for each of the plurality of memory devices; reading the part identifier for each of the plurality of memory devices; testing each of the plurality of memory devices to produce test results; recording the test results for each of the plurality of memory devices; saving the process data and the test results to a memory in a computer; associating the process data and the test results with the part identifier and the lot number for each of the plurality of memory devices in a database to associate error information with at least one of the process data and the test results; and sorting the associated process data; the test results and the part identifier to construct data summaries of manufacturing processes.