Physical fuse for semiconductor integrated circuit
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United States of America Patent
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Oct 19, 1999
Issued Date -
N/A
app pub date -
Jul 11, 1996
filing date -
Nov 30, 1993
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A fuse for an integrated circuit is constituted by a shallow NP junction, covered with a metal contact, the semiconductor region being not excessively doped. For the blowing of the fuse, the junction is forward biased with a current sufficient to enable a diffusion of metal up to the junction. This short-circuits the junction. The detection is done also by the forward biasing of the junction, but with a low current or a low voltage. The detection can also be done with reverse biasing.
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