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docdivakar
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re: Opinion: What will change on the road to 3D ICs?
docdivakar   6/22/2012 8:53:25 PM
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@DickH: this of course depends on the application. For memory and logic, 3 die stacks are quite common and I have also come across 5 dice stacked. You may want to look up Micron's Hypercube. MP Divakar

docdivakar
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re: Opinion: What will change on the road to 3D ICs?
docdivakar   6/22/2012 8:51:21 PM
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The author correctly points out the likely scenarios where heterogeneous integration (with disparate technology dice) will lead as opposed to homogeneous logic partitioned across multiple dice. There have been already memory products announced by Samsung and Micron (Hypercube). For homogeneous logic partitioned across multiple dice, in addition to the advantage mentioned, there are another compelling reasons to do so: -chip to chip interconnection where routing on the board and the number of interconnects makes it virtually impossible, leaving stacking in 3D or 2.5D as the only alternative. There are plenty of application scenarios in high speed networking. -real estate space in XY for mobiles and handhelds is another reason where homogeneous logic may have to be partitioned across multiple substrates. MP Divakar

resistion
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re: Opinion: What will change on the road to 3D ICs?
resistion   6/3/2012 7:14:03 PM
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Thus 2.5D came to "rescue" by avoiding that question. Yeah heat sinks don't work if you have heat sources that are closer.

DickH
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re: Opinion: What will change on the road to 3D ICs?
DickH   6/3/2012 7:41:42 AM
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thermal management challenges? aye, there's the rub... how many chips can you stack before the 'middle' melts?



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