Patent ID: 8138021
Filing Date: 2012-03-20
Classification: H01L,Y10T

Abstract:
1. A method of packaging semiconductor devices, comprising: attaching a first side of a riser board to a front side of a base board, wherein die cavities are formed by individual openings in the riser board that are aligned with corresponding individual package areas of the base board, and wherein the base board has die contacts and first backside terminals on a backside of the base board electrically coupled to the die contacts; forming a plurality of through package vias extending through the riser board and the base board after attaching the first side of the riser board to the front side of the base board; and depositing a conductive material in the through package vias, wherein the conductive material forms through package interconnects that electrically couple front side contacts at a second side of the riser board to corresponding second backside terminals on a backside of the base board.