What is 2.5D packaging?

Placing several chips side by side on an intermediate substrate such as a silicon interposer and connecting them with dense, fine wiring. It is used, for example, to connect GPUs and HBM.

Field: Advanced packaging (3D and chiplets)

2.5D packaging in the explanations

Questions that mention 2.5D packaging (5)

  1. Which correctly describes the role of the silicon interposer used in 2.5D packaging?
  2. Which TSMC 2.5D packaging technology is widely used to place AI GPUs and HBM side by side on a silicon interposer and connect them?
  3. In 2.5D packaging, what is the main advantage of using an interposer made of redistribution layers (RDL) of organic dielectric and copper wiring instead of a silicon interposer?
  4. Which correctly describes HBM (High Bandwidth Memory)?
  5. Which correctly describes the difference between 2.5D and 3D packaging?

Related terms

Silicon interposer HBM CoWoS Redistribution layer (RDL) 3D packaging Hybrid bonding Chiplet Microbump TSV (through-silicon via) UCIe

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