Antifuse element with electrical or optical programming
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United States of America Patent
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Jan 16, 1996
Issued Date -
N/A
app pub date -
Dec 8, 1994
filing date -
Dec 18, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A programmable antifuse element comprising adjacent bodies of germanium and aluminum or aluminum allow form a low resistance connection of good mechanical and thermal properties when heated to a temperature where alloying of the aluminum and germanium occurs. Heating for the purpose of programming the antifuse element can be done by electrical resistance heating in the-germanium, which may be doped to achieve a desired resistance value, or by laser irradiation. Due to the high resistance of intrinsic or lightly doped germanium, a resistance change ratio of greater than 10,000:1 is achieved.
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