Electrostatic discharge protection device
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United States of America Patent
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Feb 26, 2008
Grant Date -
Oct 26, 2006
app pub date -
Apr 20, 2005
filing date -
Apr 20, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrostatic discharge (ESD) protection device includes a first-type substrate, a second-type well formed in the substrate and a first-type well formed in the substrate. The second-type well includes a second-type+ region formed between first and second first-type+ regions. The first-type well is formed in the substrate adjacent a first side of the second-type well. The first-type well includes first and second first-type regions with a first-type+ region and a second-type+ region formed between the first and second first-type regions. The second-type+ region of the first-type well is formed between the first-type+ region of the first-type well and the second-type well.
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