Rapid fail analysis of embedded objects
First Claim
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1. A method of mapping test results for objects on a semiconductor wafer comprising:
- a) performing a first level test;
b) selecting failed objects based on the test results;
c) placing representations of the selected failed objects on a visual map according to the selected objects'"'"' positions on the wafer.
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Abstract
A method for analyzing test data for objects on an IC or a wafer is provided. The test data is linked to available layout information about the object under test. Certain objects are selected based on the test data. A representation of the selected objects is placed on a map of the IC or on a map of the wafer. The representation should correspond to the physical location of the object on the IC or wafer. Preferably, the representation comprises one or more polygons that enclose all devices that make up the object.
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Citations
26 Claims
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1. A method of mapping test results for objects on a semiconductor wafer comprising:
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a) performing a first level test; b) selecting failed objects based on the test results; c) placing representations of the selected failed objects on a visual map according to the selected objects'"'"' positions on the wafer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining the physical locations of failed objects on an integrate circuit comprising:
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a) identifying objects on the integrated circuit, which are to be tested; b) determining a location of each of the objects; c) providing test data resulting from a test of the integrated circuit; d) selected failed objects based on the test data; and e) linking the location of the selected failed objects with the test data to determine a physical location of the selected failed objects on the integrated circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of illustrating test data comprising:
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a) providing a wafer with objects located thereon; b) testing the objects to create test data; c) linking the test data with locations of the objects; and d) building a map visually illustrating locations and shapes of selected failed objects which are chosen based on the test data, wherein the selected failed objects failed the test. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification