Patent ID: 9627126
Date: 2017-04-18
CPC Classifications: H01F,H05K

Claim:
1. A printed circuit board (PCB) comprising: an insulating substrate; a plurality of copper foil pattern layers and a plurality of insulating adhesive sheets sequentially stacked on an upper side of the insulating substrate and a lower side of the insulating substrate; an inductor included in the copper foil pattern layer disposed on the upper side of the insulating substrate; a grounding element included in the copper foil pattern layer disposed on the lower side of the insulating substrate; and a through hole penetrating the insulating substrate and the insulating adhesive sheets, wherein the through hole is disposed between the inductor and the grounding element, wherein the through hole is not filled with a conductive material, and the through hole is disposed directly under the inductor and directly and entirely over the grounding element.