Patent ID: 8952268
Filing Date: 2015-02-10
Classification: C25D,H01L,H05K,Y10T

Abstract:
1. An interposed substrate comprising: an insulating material layer having an upper surface and a lower surface opposite to each other and a plurality of through holes penetrating through the insulating material layer; a plurality of conductive pillars respectively disposed within the through holes of the insulating material layer, wherein each conductive pillar has a top surface and a bottom surface opposite to each other, and the top surface of each conductive pillar and the upper surface of the insulating material layer are coplanar; a plurality of metal passivation pads respectively disposed within the through holes of the insulating material layer, wherein the conductive pillars are respectively stacked on the metal passivation pads, and a bottom surface of each metal passivation pad and the lower surface of the insulating material layer are coplanar; and a plurality of under ball metallurgy pads respectively disposed within the through holes of the insulating material layer, wherein the under ball metallurgy pads are respectively located between the metal passivation pads and the conductive pillars.