Programmable low impedance anti-fuse element

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United States of America Patent

PATENT NO 4943538
SERIAL NO

07166324

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Abstract

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An electrically programmable low impedance circuit element is disclosed having capacitor-like structure with very low leakage before programming and a low resistance after programming. The electrically programmable low impedance circuit element of the present invention includes a lower conductive electrode which may be formed of a metal or semiconductor material, an insulating layer, which, in a preferred embodiment includes a first layer of silicon dioxide, a second layer of silicon nitride and a third layer of silicon dioxide. An upper electrode formed of a metal or of a semiconductor material of the same conductivity type of the lower electrode or a sandwich of both completes the structure.

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Patent Owner(s)

Patent OwnerAddress
ACTEL CORPORATIONMOUNTAIN VIEW CA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamdy, Esmat Z Fremont, CA 15 1939
McCullum, John L Saratoga, CA 5 883
Mohsen, Amr M Saratoga, CA 27 2571

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