Ball array layout
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United States of America Patent
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Jul 23, 2002
Issued Date -
N/A
app pub date -
Aug 2, 2000
filing date -
Sep 2, 1999
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Abstract
The present invention relates to a ball array capacitance minimizing layout that includes a ball array disposed upon a substrate with trace routing laid out between each ball pad and a respective bond wire pad. After routing of both signal and ground traces between the ball pads and their respective bond wire pads, at least one buffer trace is also disposed upon the substrate as a closed loop. The buffer trace may or may not be connected to ground. Preferably, buffer traces are configured to reduce the capacitance of the highest capacitance ball pads. This is accomplished by placing more of a give buffer trace around the perimeter of a higher capacitance ball pad, that around the perimeter of a lower capacitance ball pad. Accordingly, a capacitance difference between a higher capacitance ball pad and signal trace and a lower capacitance ball pad and signal trace can be minimized according to the present invention.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- MICRON TECHNOLOGY, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Corisis, David J | Meridian, ID | 329 | 8748 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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