Reprogrammable metal-to-metal antifuse employing...

Active solid-state devices (e.g. – transistors – solid-state diode – Integrated circuit structure with electrically isolated... – Passive components in ics

Reexamination Certificate

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C257S077000, C257S751000, C257S774000

Reexamination Certificate

active

07459763

ABSTRACT:
A reprogrammable metal-to-metal antifuse is disposed between two metal interconnect layers in an integrated circuit. A lower barrier layer is formed from Ti. A lower adhesion-promoting layer is disposed over the lower Ti barrier layer. An antifuse material layer selected from a group comprising at least one of amorphous carbon and amorphous carbon doped with at least one of hydrogen and fluorine is disposed over the lower adhesion-promoting layer. An upper adhesion-promoting layer is disposed over the antifuse material layer. An upper Ti barrier layer is disposed over the upper adhesion-promoting layer.

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European Supplementary Search Report issued Dec. 4, 2006 in European Patent Application No. 02776069.3, based on International Patent Application No. PCT/US02/31253 of co-pending U.S. Appl. No. 09/972,825.

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