Printed circuit board and method of manufacturing printed circuit board

摘要

A method for manufacturing a printed circuit board includes forming an opening portion in a substrate, positioning chip capacitors in the opening portion of the substrate such that the chip capacitors are accommodated in the opening portion of the substrate, forming a buildup structure including an interlayer resin insulating layer and a conductive layer over a surface of the substrate and the chip capacitors accommodated in the opening portion of the substrate, and forming on a surface of the buildup structure bump structures positioned to mount an IC chip such that the chip capacitors in the opening portion of the substrate are positioned directly below the IC chip.

主权项

1. A method for manufacturing a printed circuit board, comprising:
forming an opening portion in a substrate; positioning a plurality of chip capacitors in the opening portion of the substrate such that the plurality of chip capacitors is accommodated in the opening portion of the substrate; filling a resin into a space formed between the chip capacitors in the opening portion and the substrate such that the resin seals the chip capacitors in the opening portion of the substrate; forming a first buildup structure comprising an interlayer resin insulating layer and a conductive layer over a first surface of the substrate and the plurality of chip capacitors accommodated in the opening portion of the substrate; forming a second buildup structure comprising an interlayer resin insulating layer and a conductive layer over a second surface of the substrate and the plurality of chip capacitors accommodated in the opening portion of the substrate on an opposite side with respect to the first surface of the substrate; and forming on a surface of the first buildup structure a plurality of bump structures positioned to mount an IC chip such that the plurality of chip capacitors in the opening portion of the substrate is positioned directly below the IC chip, wherein the forming of the opening portion comprises forming the opening portion in the substrate such that the opening portion accommodates the chip capacitors to extend in a lateral direction of the substrate below the IC chip.