Patent attributes
Integrated circuits are described which directly connect a semiconductor interposer to a motherboard or printed circuit board by way of large pitch connections. A stack of semiconductor interposers may be connected directly to one another by a variety of means and connected to a printed circuit board through only a ball grid array of solder bumps. The stack of semiconductor interposers may include one or more semiconductor interposers which are shifted laterally to enable directly electrical connections to intermediate semiconductor interposers. The top semiconductor interposer may have no electrical connections on the top to increase security by making electrical “taps” much more difficult. An electrically insulating layer may be incorporated between adjacent semiconductor interposers and cavities or air gaps may also be included within one or more semiconductor interposers.
