Fabrication method of packaging substrate

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United States of America Patent

PATENT NO 9899235
SERIAL NO

15293858

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Abstract

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A packaging substrate is disclosed, which includes: a dielectric layer; a circuit layer embedded in and exposed from a surface of the dielectric layer, wherein the circuit layer has a plurality of conductive pads; and a plurality of conductive bumps formed on the conductive pads and protruding above the surface of the dielectric layer. As such, when an electronic element is disposed on the conductive pads through a plurality of conductive elements, the conductive elements can come into contact with both top and side surfaces of the conductive bumps so as to increase the contact area between the conductive elements and the conductive pads, thereby strengthening the bonding between the conductive elements and the conductive pads and preventing delamination of the conductive elements from the conductive pads.

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Patent Owner(s)

Patent OwnerAddress
SILICONWARE PRECISION INDUSTRIES CO LTDNO 123 SEC 3 DAFENG RD TANZI DIST TAICHUNG CITY 427

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ho, Chi-Ching Taichung, TW 31 26
Huang, Sheng-Che Taichung, TW 15 27
Tsai, Ying-Chou Taichung, TW 27 238

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