Embedded Die Superstructure in Through-Silicon Via IC Packages

The patent introduces an intermediary material layer between the wafer level package and the substrate to act as a buffer that compensates for the coefficient of thermal expansion mismatch. This intermediate layer absorbs thermal stress and prevents mechanical instability, allowing the wafer level package technique to be used without sacrificing reliability.

The patent transitions from a two-dimensional planar interconnect layout to a three-dimensional vertical stacking architecture. By stacking multiple chip layers vertically and using through-silicon vias for inter-layer connections, the system achieves high device density while providing extensive interconnect capacity through the vertical dimension, effectively resolving the limitation of interconnect数量 in small chip areas.

The patent merges multiple discrete packaging operations into a single integrated wafer-level processing step. By performing packaging operations on the entire wafer before dicing, all chips are packaged simultaneously under controlled conditions, eliminating the mechanical fragility and yield issues associated with handling individual chips during separate packaging operations.

The patent implements a nested hierarchical structure where multiple functional layers are stacked within a compact chip package. The package contains embedded die superstructures with multiple interconnect layers, signal distribution networks, and power management elements nested within each other in three dimensions, enabling high density element integration within a small chip footprint.