Patent ID: 9583365
Date: 2017-02-28
CPC Classifications: H01L

Claim:
1. A method comprising: attaching a metal layer on a first carrier; forming a dielectric layer on the metal layer; attaching a first side of a packaging component on a first side of the dielectric layer, wherein the packaging component comprises a plurality of through holes before the packaging component is attached to the metal layer, and wherein the dielectric layer is between and in direct contact with the package component and the metal layer; removing exposed portions of the dielectric layer to expose the metal layer; filling the plurality of through holes with a metal material using an electrochemical plating process, wherein the exposed metal layer is employed as an electrode for the electrochemical plating process; attaching a second carrier on a second side of the packaging component; detaching the first carrier from the packaging component; and patterning the metal layer to form a redistribution layer on the first side of the packaging component and expose a portion of a second side of the dielectric layer, wherein the plurality of through holes extend through the dielectric layer during the step of patterning the metal layer.