Importance

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Abstract

A packaging substrate includes a copper foil substrate, a sputtering copper layer, a dielectric layer, a plurality of electrically conductive connection points, and an electrically conductive pattern layer. The sputtering copper layer is formed on the copper foil substrate. The electrically conductive connection points are formed on a surface of the sputtering copper layer, which is away from the copper foil substrate. The dielectric layer is sandwiched between the electrically conductive pattern layer and the sputtering copper layer. A plurality of first blind via are formed in the first dielectric layer. The electrically conductive pattern layer includes a plurality of electrically conductive traces and a plurality of connection pads. Each electrically conductive connection point is electrically connected to the electrically conductive trace by the first blind via.

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First Claim