Patent ID: 9743523
Date: 2017-08-22
CPC Classifications: H01F,H05K,Y10T

Claim:
1. A printed circuit board package structure comprising: a substrate having a first surface and a second surface opposite to the first surface, a plurality of first ring-shaped recesses, and a plurality of first grooves, wherein the first ring-shaped recesses and the first grooves are located on the first surface, each of the first ring-shaped recesses is communicated with another one of the first ring-shaped recesses through at least one of the first grooves, and at least two of the first ring-shaped recesses are communicated with a side surface of the substrate through the first grooves to form at least two openings; a plurality of ring-shaped magnetic elements respectively located in the first ring-shaped recesses; a support layer located on the first surface of the substrate, and covering the first ring-shaped recesses and the first grooves, and comprising a glass fiber layer containing non-cured epoxy and a glass fiber layer containing cured epoxy, wherein the support layer and the substrate have a plurality of through holes, and the through holes are adjacent to the first ring-shaped recesses, and the glass fiber layer containing non-cured epoxy is located at a lower level of the support layer and covers the first ring-shaped recesses and the first grooves, and the glass fiber layer containing cured epoxy is located at an upper level of the support layer and covers the lower-leveled glass fiber layer containing non-cured epoxy; and a plurality of first conductive layers respectively located on surfaces of the support layer and the substrate facing the through holes, wherein each of the first conductive layers has a first end and a second end opposite to the first end, and the first end extends to a surface of the support layer opposite to the substrate, the second end extends to the second surface of the substrate.