Advanced packaging (3D and chiplets)

Which correctly describes the difference between 2.5D and 3D packaging?

  1. A2.5D places chips side by side on an intermediate substrate (such as an interposer), while 3D stacks chips vertically
  2. B2.5D stacks chips vertically, while 3D places chips side by side
  3. CThere is no difference between 2.5D and 3D
Show answer and explanation

Answer: A. 2.5D places chips side by side on an intermediate substrate (such as an interposer), while 3D stacks chips vertically

2.5D packaging places several chips side by side on an intermediate substrate such as a silicon interposer and connects them through the substrate's fine wiring. 3D packaging stacks chips vertically and connects them with TSVs or hybrid bonding. Structures combining the two are also used.

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More Advanced packaging (3D and chiplets) questions

  1. In HBM, what is the typical number of DRAM dies stacked in one stack?
  2. What is the concept called that integrates chips made with different manufacturing processes and materials into one package?
  3. Which correctly describes the typical TSV formation process?
  4. What is the main aim of manufacturing packages all at once on large rectangular panels instead of round wafers?
  5. To stack chips with TSVs, approximately how thin are wafers ground from the back?