Patent ID: 9349711
Filing Date: 2016-05-24
CPC Classification: H01L

Claim Text:
1. A semiconductor device with face-to-face chips on interposer, comprising: a first chip; a second chip; an alignment guide; a first heat spreader having a cavity; and an interposer having a first surface, a second surface opposite to the first surface, first contact pads on the first surface, second contact pads on the second surface, and through vias that electrically couple the first contact pads and the second contact pads, wherein the first chip is electrically coupled to the first contact pads of the interposer by a plurality of bumps to provide a chip-on-interposer subassembly; the chip-on-interposer subassembly is attached to the first heat spreader using a thermally conductive material with the first chip enclosed in the cavity and the interposer laterally extending beyond the cavity; the second chip is electrically coupled to the second contact pads of the interposer by a plurality of bumps; and the alignment guide is positioned beyond the cavity of the first heat spreader and laterally aligned with and in close proximity to peripheral edges of the interposer; or the alignment guide is positioned within the cavity of the first heat spreader and laterally aligned with and in close proximity to peripheral edges of the first chip.