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Very cool!

I wish E-ink displays were a bit more affordable. The 13 inch one is £229.50. Does anyone know why they are still so expensive, at least at large sizes?



You have to distinguish the fake color e-ink that are used in mass consumer products which are actually black&white e-ink plus an LCD layer and are expensive, and the real color e-ink where each micro capsule embeds 3 to 5 different inks of different colors.

The latest are pretty complex devices, very slow to refresh (hence why they are not used in your e-reader) and also very expensive. But the rendering is way much nicer because it’s real ink that is used to render the colors.


They are used in book readers. Amazon Kindle Colorsoft, for example. Or I have android phone with such screen (though, not latest generation).

Rather opposite: I never seen consumer products with two-layer displays.


Nope, that's my point, on your kindle, the screen is a Kaleido 3, which is a black&white+lcd layer: https://www.reddit.com/r/eink/comments/1i8e26x/seriously_how...

Vs Spectra (the expensive screen): https://www.eink.com/upload/2023_11_14/3_20231114082849vy2as...


I don't see LCD layer here. Passive color filters, B/W capsules (which reflects or doesn't reflect incoming light, depends on orientation), TFT (thin layer transistors, not LCD — liquid crystal display!) as control to orient capsules.

Yes, it is not 4 color capsules as in Spectra, but where is LCD?

LCD what is caught my attention (and surprise) in your commentary.

But now I see difference, thank you.


This project will work with a 7.3" display just as well - they are £79.50! https://shop.pimoroni.com/products/inky-impression?variant=5...

Disclaimer: I am the CEO of Pimoroni :-)


I love the inky impression!

I am using my 13 inch inky display for my own birdnet - I also posted this in another thread last week https://i.imgur.com/5XbM6bb.png

I also bought 3 more 4 inch ones. Here is the first deployment next to the fish tank - https://i.imgur.com/nj8nKrS.png - I like this because I can stuff an rtl sdr in that box too, so it picks up nearby radio sensors in addition to BT. Real nice project screen!

I usually only refresh the image on the screen every few hours. I love how the image stays even with no power.


Yeah, the 4 and 7.3" prices are not bad, the jump to 13 is just large. That being said, the cost per area goes down, so it is also probably fair.


Cost per area is pretty much what drives all display pricing. :-)


For a product that is made for creators and DIY, AI generated imagery on the product photos doesn't feel right.


You can sometimes find old Nooks for cheap and they can be rooted to display static images, but it's not elegant.


Patents and greed in a combination.




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