Process variation as die level traceability

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11233013
APP PUB NO 20200258844A1
SERIAL NO

16860683

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Abstract

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Devices, systems and methods for uniquely identifying integrated circuits are provided. For at least one embodiment, an identifiable integrated circuit in a lot of integrated circuits includes a plurality of identifier devices. Each of the identifier devices, when tested, returns a series of first test results that form an analog identifier for the integrated circuit. For one embodiment, the identifier devices is a Zener diode. The test results may be based on reverse breakdown voltage measurements determined prior to packaging of the integrated circuit. Later testing of the integrated circuit returns a second series of reverse breakdown voltage measurements that monotonically vary over time and temperature, as compared to the first series of test results. Such monotonical variation facilitates correlation of the first series of test results with the second series of test results and, thereby, identification of the integrated circuit.

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Patent Owner(s)

  • SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
De, Leersnyder Bart Arthur Norbert Merelbeke, BE 2 0
Dobbelaere, Wim Ninove, BE 4 9
Lettens, Jan Lucie Axel Zwijnaarde, BE 2 0
Van, Vossel Thomas Laarne, BE 2 0

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