Definition
Advanced packaging integrates one or more die, memory components, and interconnect structures into a package whose electrical, thermal, mechanical, and test behavior is co-designed with the silicon.
Process position
Inputs
- Tested wafers or known-good die
- Substrate, RDL, or interposer
- Memory and companion die
- Bumps, bonding metals, underfill, and mold compounds
- Thermal and mechanical components
Outputs
- Assembled multi-die or single-die package
- Package traceability and test record
- Qualified system-level interconnect and thermal path
How it works
- 01Define package architecture and test insertion points
- 02Prepare, thin, and inspect wafers or die
- 03Create RDL, bumps, TSVs, or bonding interfaces
- 04Attach or bond die and memory
- 05Underfill, mold, or otherwise protect interfaces
- 06Attach substrate, balls, lid, or cooling structure
- 07Test, inspect, qualify, and correlate failures
The package is an engineered system
Advanced packaging connects logic, memory, and specialty die using package-scale or wafer-scale interconnects. Architecture choices change bandwidth, latency, power delivery, thermal paths, form factor, assembly risk, and the value exposed when a later step fails.
TSMC groups SoIC, CoWoS, and InFO as complementary silicon-stacking and advanced-packaging technologies for heterogeneous integration.
Test must be inserted before value accumulates
Multi-die assembly compounds value. Wafer probe, known-good-die strategy, interposer screening, intermediate test, and final test should be planned together so that a latent defect is found before it strands more expensive components.
Advanced packaging strategy requires connected design, assembly, test, and materials decisions because package interfaces jointly determine system behavior and yield exposure.
Boundary: The exact test insertion points and commercial risk allocation are product- and supplier-specific.
Sources
Citations support the tagged claims above. Access dates record when Maha Strategies last checked the public source.
- [1]3DFabric: 3D Silicon Stacking and Advanced Packaging · TSMC · accessed 2026-08-13
- [2]CoWoS Advanced Packaging · TSMC · accessed 2026-08-13