Programmable electronic fuse

Details Programmable electronic fuse Programmable electronic fuse

2004-10-21

2009-02-03

Pizarro, Marcos D. (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Integrated circuit structure with electrically isolated...

Passive components in ics

C257S209000, C257SE23149

Reexamination Certificate

active

07485944

ABSTRACT:
A programmable device (eFuse), includes: a substrate (10); an insulator (13) on the substrate; an elongated semiconductor material (12) on the insulator, the elongated semiconductor material having a first end (12a), a second end (12b), a fuse link (11) between the ends, and an upper surface S. The semiconductor material includes a dopant having a concentration of at least 10*17/cc. The first end (12a) is wider than the second end (12b), and a metallic material is disposed on the upper surface. The metallic material is physically migratable along the upper surface responsive to an electrical current I flowable through the semiconductor material and through the metallic material.

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