Advanced packaging (3D and chiplets)

In HBM, what is the typical number of DRAM dies stacked in one stack?

  1. A1
  2. B2
  3. CAbout 8–16
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Answer: C. About 8–16

In HBM, DRAM dies connected with TSVs are stacked 8, 12 or even 16 high and combined with a base die (logic die) at the bottom to form one stack. More layers increase capacity, but techniques for thinning dies and countermeasures for heat become necessary.

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More Advanced packaging (3D and chiplets) questions

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