Re: [Libre-silicon-devel] Announcement - Mumble session on Sunday 2021-03-21 @ 18:00 UTC

Great to hear you guys having so much progress.

By any chance, have anybody heard of Domicro BV? A Netherland based microfab shop https://bits-chips.nl/artikel/small-series-of-chips-profitable-by-flexible-c...

On Mon, Mar 22, 2021 at 5:49 AM Ferenc Éger eegerferenc@gmail.com wrote:

Hello Everyone,

Summary of the Mumble session:

Participants: eegerferenc, hsank, leviathan, tatzelbrumm

Agenda:

• LS50U/MLL: It is proposed to make a maskless exposure unit based on

JBD's uLED panel targeted at 50-100um MFS, and make it available bundled into a "DIY Microchip Fabrication Kit" containing everything needed for a basic process. Details discussed so far:

* Substrate: custom, 1-2cm rectangular "wafers" in order to make

alignment easier and to fit into a small tube furnace. Similar, but polycrystalline offerings exist for solar panels. Finding and quoting a supplier is in progress.

* Exposure: JBD uLED panel + simple projection/reduction optics +

3D-printed framework for alignment, into which the chips can be slided in.

* Furnace: cheap second-hand tube furnace, or a tube furnace heater

with retrofitted quartz tube and control electronics (backup plan). Metal-lined, graphite-lined or gas-heated types are to be avoided due to contamination issues.

* Chemicals (HF, B, P, As, acidic cleaning agents, ...): Ordered in

bulk and repackaged for distribution to overcome that chemical reagent suppliers don't deal with individuals.

* Funding: Initially, crowdfund with unit price based on the

expectation of at most 2 customers (semiconductor-related crowdfunding tends to fail), then lower the UP if more customers come. Also, plan B shall be formulated.

* Legal background: form a limited-liability company to handle the

stuff.

Discussion is expected to continue until next Sunday, when things are expected to be written down. Comments on mailing list or participation in the Mumble session are welcome.

Regards,

Ferenc

On 20/03/2021 09:29, Hagen SANKOWSKI wrote:

...

Hello List!

This is our weekly announcement for the next Mumble Sessions on Sunday

  2021-03-21 @ 18:00 UTC.

Please join us as usual at our Mumble Server murmur.libresilicon.com at Port 64738, the Channel is IC.

We like to follow-up our meeting minutes from mumble sessions before.

Regards, Hagen. _______________________________________________ Libresilicon-developers mailing list Libresilicon-developers@list.libresilicon.com https://list.libresilicon.com/mailman/listinfo/libresilicon-developers

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