Method of making an antifuse structure using a metal cap layer

Semiconductor device manufacturing: process – Making device array and selectively interconnecting – Using structure alterable to conductive state

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438467, 438600, 438DIG901, H01L 2182

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active

057598762

ABSTRACT:
An antifuse includes a metal cap layer located at the second barrier layer of the antifuse to improve the antifuse yield and long term reliability. An antifuse further includes one or more interfacial oxide film layers surrounding an antifuse dielectric layer to provide narrowing of the antifuse programming voltage distribution and to further improve the antifuse yield and long term reliability.

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