Patent ID: 11967548
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. An assembly, comprising:
a chip comprising a semiconductor substrate;
a casing comprising an integrated circuit and including an upper portion formed on a side of said chip and lower portion formed on another side of said chip;
plural through-wafer vias (TWVs) for electrically connecting said chip and said integrated circuit of said casing;
a system board configured to be connected to the casing; and
upper and lower cards connected to said casing for connecting said casing to the system board,
wherein said upper and lower cards are connected to said upper and lower portions of said casing, respectively, by plural solder balls which are aligned with said plural through-wafer vias such that said plural through-wafer vias are electrically connected to said upper and lower cards, and
wherein said chip comprises a silicon die formed on an integrated circuit of said chip, said plural through-wafer vias being formed in silicon pillars of said silicon die.