Space saving laser programmable fuse layout

Details Space saving laser programmable fuse layout Space saving laser programmable fuse layout

1996-09-20

1998-12-01

Wallace, Valencia Martin

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

Integrated circuit structure with electrically isolated...

Passive components in ics

257202, 257207, 257208, 257209, 257528, 438 6, 438132, 3652257, H01L 2710, H01L 2900

Patent

active

058442960

ABSTRACT:
A compact laser programmable fuse structure has a central line and two sets of fuses extending from opposite sides of the central line. An opening through a passivation layer exposes the fuses and overlies the central line. In one embodiment, the opening also exposes the portions of the central line. The central line is made of fuse material or another material for which the opening does not create reliability problems. In one embodiment of the invention, the central line and the fuses are parts of a single contiguous region of polysilicon. This fuse structure has a length that is about half the length of conventional fuse structure having the same number of fuses because two fuses, one on either side of the central line, fit within a length used for a single fuse in conventional fuse structures.

REFERENCES:
patent: 5545904 (1996-08-01), Orbach
patent: 5636172 (1997-06-01), Prall et al.

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