PACKAGING SUBSTRATE AND FABRICATION METHOD THEREOF
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United States of America Patent
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Issued Date -
Aug 28, 2014
app pub date -
Feb 26, 2013
filing date -
Feb 26, 2013
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Abandoned
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Abstract
A packaging substrate and a fabrication method thereof are disclosed. The packaging substrate includes: a substrate body having a plurality of first and second conductive pads formed on a surface thereof; a first insulating layer formed on the surface of the substrate body and having a plurality of first and second openings for respectively exposing the first and second conductive pads; a conductive layer formed on the first and second conductive pads and the first insulating layer around peripheries of the first and second conductive pads; a plurality of first and second conductive bumps formed on the conductive layer on the first and second conductive pads, respectively; a solder layer formed on the second conductive bumps; and a plurality of conductive posts formed on the first conductive bumps and having a width different from that of the first conductive bumps. The invention improves the fabrication efficiency.
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