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custom LCD design

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doanerocks:
My idea is to create s custom display for a NTP/GPS clock where you never set the time, just the time zone.  I am sick of clocks I can not trust to have accurate time except my phone and computer which use NTP.  You will configure the clock using a web server hosted on the microcontroller on the clock. 
So I posted this a while ago and I made some modifications to the display based on the suggestions.  I also showed the design to a friend that suggested I do character display instead of a starburst or seven segment for the second row.  Changing the second row makes it much more flexible to change.  The idea for the second row is for showing the day, month, year, or possibly temp/humidity which ever the user prefers.  The previous rendition had much skinner seven segments on the top row that people pointed out was out of scale, which I have since fixed.  Do people have any companies for getting a custom LCD produced which they can recommend? What do you think of the design?  Any other ideas?  What do you think of the project?
 clock-face-01.pdf (97.75 kB - downloaded 62 times.)

Kim Christensen:
If this is just a personal project, then I'd simply use a good graphical display and my own fonts.
A custom LCD only really makes sense for mass production.

Benta:
You're opening a big can of worms here.
A simple 7-segment plus annunciators LCD can be made with a single back plane (=cheap).
You have to think of it as a single-sided PCB layout, where tracks need to be routed.
Moving into dot-matrix will force you to use multiple backplanes (usually 4), which is a different story altogether.

Quite frankly, why don't you just use a standard dot-matrix LCD for the whole thing instead?
Available off-the-shelf everywhere.

PCB.Wiz:

--- Quote from: doanerocks on April 15, 2024, 08:54:38 pm --- Do people have any companies for getting a custom LCD produced which they can recommend? What do you think of the design?  Any other ideas?  What do you think of the project?

--- End quote ---
There are significant NRE charges for custom LCDs and as you push up the segment count, drivers get more complex and larger.

How many do you intend to make ?

ePaper displays would be an alternative for clocks. Lower power and wide viewing angle, and you can pick form many sizes these days.
 

doanerocks:

--- Quote ---ePaper displays would be an alternative for clocks.
--- End quote ---
I really wanted to use a ePaper display but I ruled them out for a few reason.  Slow refresh rate, the quickest I could find was 5seconds.  I thought there was a max amount of lifetime refreshes. 

I am taking another look look at epaper, and I found a 10" display that can do 0.3s partial refresh just for the seconds, and a full refresh just under 1 second which should work if it can live up to the specs. 

I doubt I will be able to see millions but It would be nice to sell hundreds if there are enough fans of accurate time. 

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