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krisi
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CEO
Re: submicron
krisi   6/10/2014 5:12:37 PM
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aha...TSVs, they can be 5um or so...sub-um alignment makes sense, thank you @docdivekar!

docdivakar
User Rank
Manager
Re: submicron
docdivakar   6/10/2014 3:58:38 PM
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@krisi As referenced in the article, one of the alignment challenges is the tolerance stackup for microbumps and TSV's. I have seen IMEC's roadmap where the microbumps are less than 30um in dia and the TSV's are heading lower than 5um. Without the submicron alignment accuracy needed, wafer to wafer bonding will not be realized!

MP Divakar

krisi
User Rank
CEO
submicron
krisi   6/10/2014 2:29:22 PM
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Sounds extremely impressive but why would need sub-micron alignment capability for 300mm wafer?



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