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double-o-nothing
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re: Globalfoundries plans production EUV by 2015
double-o-nothing   9/1/2010 11:59:33 AM
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The shot noise problem will be severe for 2x nm in mask patterning. With a 12 uC/cm2 dose, and 80 nm holes on a 4x mask, there are only 3800 electrons used per hole, which is a 10% noise value in a population of a billion contact holes.

resistion
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re: Globalfoundries plans production EUV by 2015
resistion   8/27/2010 4:59:50 PM
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I just read the keynote slide 21, it reads:"Immersion lithography will get us through 22/20 nm node and beyond, but with significant complexity and cost challenges." Okay, but later when describing EUV's main issues, "Cost of ownership" is clearly highlighted. So in actuality, cost is not yet a good case for EUV.

resistion
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re: Globalfoundries plans production EUV by 2015
resistion   8/23/2010 8:48:26 AM
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It is kind of consistent with Intel recently changing its tack for EUV at 11 nm, to more of a complementary role. From the way the analysis goes, the dose needs to increase with each new generation. That puts lots of weight on improving the source power, and incurs additional delay. Shot noise also has to be considered for e-beam, so it's something that needs to be addressed even for the other NGL's.

double-o-nothing
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re: Globalfoundries plans production EUV by 2015
double-o-nothing   8/23/2010 6:21:34 AM
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In fact Intel published recently that ASML's dose level would cause too much shot noise at 22 nm. So I guess they (ASML) would have to increase it up an order of magnitude at least, to more than 100 mJ/cm^2.

double-o-nothing
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re: Globalfoundries plans production EUV by 2015
double-o-nothing   8/22/2010 3:34:08 PM
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ASML recently quoted the dose to be used for EUV to be 15 mJ/cm^2. That is 10 EUV photons per square nm. Even for 30 nm minimum resist thickness, that is much less than 1 photon per nm^3. I don't think classical optical predictions can be extrapolated with such a low photon density.

resistion
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re: Globalfoundries plans production EUV by 2015
resistion   7/16/2010 11:33:53 AM
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Their EUV tools are now spec'd (resolution) based on assumptions of the resist performance (like dose sensitivity, diffusion length, etc.). It is no longer the usual classical dependence on wavelength and numerical aperture. This makes the value of the tool kind of questionable if it depends on something not controlled by the vendor.

mcgrathdylan
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re: Globalfoundries plans production EUV by 2015
mcgrathdylan   7/16/2010 5:38:09 AM
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One thing I heard after this article was published was that ASML only plans to make six pre-production tools, and they are all spoken for. (I haven't had a chance to confirm this yet). Globalfoundries says "We want to get the production-level EUV tool into the fab as soon as possible so we can move development from the lab to the real production environment. This is the same thing we did with immersion, which allowed us to be an industry leader in high-volume implementation with that technology. It wouldn’t be appropriate for us to comment on the offerings of an individual tool vendor."

Litho guy
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re: Globalfoundries plans production EUV by 2015
Litho guy   7/15/2010 6:51:06 PM
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Another Bartlett blunder by a guy that does not understand litho

resistion
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re: Globalfoundries plans production EUV by 2015
resistion   7/15/2010 2:10:45 PM
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They're also going to be blind to mask defects until 2015, so they cannot start then. At least they are less unrealistic than Samsung (who said 2012).

resistion
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re: Globalfoundries plans production EUV by 2015
resistion   7/15/2010 1:22:59 PM
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Ha..so the preproduction EUV tool is actually not in the plan for these so-called EUV supporters. Or maybe it's too big and heavy for their cleanroom (from what I've heard).

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