ELECTRONIC PACKAGE AND FABRICATION METHOD THEREOF
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United States of America Patent
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Issued Date -
May 26, 2016
app pub date -
Aug 24, 2015
filing date -
Nov 25, 2014
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Abstract
A method for fabricating an electronic package is provided, which includes the steps of: providing a substrate having a cavity and a first via hole; disposing an electronic element in the cavity; forming a dielectric layer on the substrate and the electronic element; forming a circuit layer on the dielectric layer and forming a first conductive portion in the first via hole; forming on the substrate a second via hole communicating with the first via hole, the first and second via holes constituting a through hole; and forming a second conductive portion in the second via hole, the first and second conductive portions constituting a conductor. Since the through hole is formed through a two-step process, the invention can reduce the depth of the via holes and therefore perform laser drilling or etching processes with reduced energy, thereby avoiding damage of the conductive portions and improving the product reliability.
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