February 2020 - Libresilicon-developers

Maskless lithography
by David Lanzendörfer 11 Mar '20

11 Mar '20

Hi I'm apparently not the first one with the idea to use a DMD chip and an UV light source for exposure: https://www.researchgate.net/figure/Layout-for-UV-based-DMD-system-If-the-i… There are actually parts available: http://www.ti.com/product/DLP9500UV http://www.ti.com/product/DLP9000XUV For those chips, the UV wave length would be around 360nm The price on Mouser is 8888 USD, so around 9 thousand USD The chip is exactly made for mask less lithography systems as the one I wanna build, it's even mentioned in the data sheet: http://www.ti.com/lit/ds/symlink/dlp9500uv.pdf By optimizing the aperture of the lens system, this means that one could perfectly fine produce feature sizes down to 150 nm or so, maybe even smaller. I wonder, whether we should make a gofundme campaign for buying the required second hand stepper and this chip... Hmm. Also. Since this chip is super expensive, we will need to *really* make sure, that there's no mistake in the PCB, because we only have one attempt. Cheers -lev

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Mumble, in an hour
by David Lanzendörfer 16 Feb '20

16 Feb '20

Hi folks Please don't forget, that we've got a Mumble session in less than an hour. Cheers -lev

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Mumble, quick reminder for my fellow nerds: Today is Sunday
by David Lanzendörfer 09 Feb '20

09 Feb '20

Hi everyone I'm idling here around in Mumble. Quick reminder: Today is Sunday And in 10 minutes it's 9pm HKT ;-) -lev

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Portugal, Clean room, HOLY SHIT!!! O_O
by David Lanzendörfer 06 Feb '20

06 Feb '20

Hello folks I've just been pointed to this OpenAccess lab in Braga: https://lims.inl.int/WebForms/Equipment/EquipmentList.aspx That's more advanced than HKUST!!! And it has the same access conditions AS HKUST!! Seems not only my personal life is getting hotter, but also the lab itself! :D -lev

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AMKOR in Porto, Portugal
by David Lanzendörfer 03 Feb '20

03 Feb '20

Hi I just got feedback from AMKOR and it seems that the factory line in Porto does only do packaging and doesn't do front end manufacturing anymore. So I think we really better check for labs like the one we've looked at yesterday[1], which are at least partially equipped to perform the FEOL steps. At least we now know that there's a place where we can package it xD Cheers David [1] https://www.cenimat.fct.unl.pt/lab-facilities/clean-room-lab[1] -------- [1] https://www.cenimat.fct.unl.pt/lab-facilities/clean-room-lab

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Equipment
by Hagen SANKOWSKI 02 Feb '20

02 Feb '20

Today in our weekly Mumble session we talked about equipment, we had to add into our next clean room occasionally.. Here are the sites I am aware of - or still remember from a talk with Peter at the last congress. https://www.fabsurplus.com/sdi_catalog/home.do https://www.used-line.com/list-semiconductor-and-pcb/clean-room-equipment https://www.4semi.com/ Even Ebay.com has an own category for clean room equipment under Business & Industrial > CNC, Metalworking & Manufacturing > Semiconductor & PCB Manufacturing Equipment > Cleanroom Equipment Regards, Hagen. -- support LibreSilicon to get back into the Clean Room https://www.gofundme.com/f/libresilicon-cleanroom-rent

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Lost at FOSDEM
by Christoph Maier 01 Feb '20

01 Feb '20

Hi all, as hardware guy, I'm kind of lost in the FOSDEM maze, particularly because the Open Hardware room is full and I can't get in. Anyone else around? tatzelbrumm

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