Patent ID: 8093506
Filing Date: 2012-01-10
Classification: H01L,H05K,Y10T

Abstract:
1. A multilayer wiring board comprising: a core board having a main surface and a rear surface; a first laminated wiring portion having a structure in which a plurality of main surface side insulating layers and a plurality of main surface side conductor layers are alternately laminated on the main surface, and an element mounting portion is provided on a surface of the first laminated wiring portion; a second laminated wiring portion having a structure in which a plurality of rear surface side insulating layers and a plurality of rear surface side conductor layers are alternately laminated on the rear surface; a through hole conductor formed in the core board and electrically connecting a conductor layer formed on the main surface of the core board and a conductor layer formed on the rear surface of the core board; and a power supply structure comprised of a conductive metal rod made of copper as a main material and embedded in a through hole which penetrates the first laminated wiring portion, the core board and the second laminated wiring portion, wherein a main surface side end portion of the conductive metal rod is directly joined and electrically connected to a main surface side conductor layer for the power supply and a rear surface side end portion of the conductive metal rod is directly joined and electrically connected to a rear surface side conductor layer for the power supply, said main surface side conductor layer for the power supply is one of said plurality of main surface side conductor layers and said rear surface side conductor layer for the power supply is one of said plurality of rear surface side conductor layers.