Electronics > Projects, Designs, and Technical Stuff
LCD design, is this good enough?
robertbaruch:
How would I represent these things in the gerber files? They look like some kind of metallic paste. They are effectively vias between top and bottom glass.
robertbaruch:
Here's something I whipped up in KiCAD. Hopefully the gerbers from this file should be good enough for a manufacturer to use. I used the trace width from the original LCD (0.35mm) and the same for spacing. Yellow dots are whatever the equivalent of vias are for LCDs.
The actual display area where the liquid crystal goes is just a box around the matrices and indicators, so the crossings at the top don't actually form segments.
james_s:
This is an interesting project, it has never occurred to me that this sort of thing could even be done.
You might ask about prices on a smaller run, you might also try a kickstarter or similar campaign to get funds. I don't know how much demand there is for these displays, I personally have no use for one but it would be fascinating to see this project succeed.
Benta:
Check with the manufacturer if he has another solution than the vias. I've seen LCDs where the traces are brought to the edge of the glass and a connection between front plane and back plane made. This would be much cheaper.
robertbaruch:
Hooray, the Chinese holiday is over.
Supplier B responded, with an MOQ of 3000. This time I replied asking for an MOQ of 200, and they replied saying 200 was the same as asking for samples, and there would be no profit in it. Then they asked what my target price was, and I replied USD 500 not including samples or tooling.
I'm not sure whether they took that to mean USD 500.00 per piece, or USD 5.00 per piece, or USD 2.50 per piece (my bad, I should be more explicit). But then they asked some followup questions:
* Is this TN or HTN? (TN).
* Is this an LCD or LCM? (LCD).
* Do they need to provide the elastomeric strip (no, I hope this doesn't come back to bite me).
They asked if I had a sample, I provided images. I also said that the USD 500- was for 200, so USD 2.50 per piece.
Supplier D replied with MOQ 1000 "with repeat order expected". I replied with my apologies and that my budget was limited to USD 500 not including tooling and samples.
I have the awful feeling that LCDs are never going to be within reach of the hobbyist. Part of the process is similar to PCB manufacture, but it seems the rest of the process is not high-volume enough to turn the industry into something like the PCB industry.
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