It's a big problem to get active matrix monochrome displays these days, let alone reflective ones.
Like the ones used in Chitu Systems SLA resin printers(Elegoo, Anycubic, Creality...)?
From first look, they use colour ones.
Hisense sells a transflective monochrome LCD android tablet.
Very likely it's a custom order panel. I would very like to see a teardown.
The whites are still quite bad I can see already, it has no special high whiteness polariser.
Re:CutiePi – A Raspberry Pi 4 tablet
by GekkePrutser on Sunday March 21, 2021 @07:22PM
(#26535069)
License or not, if nobody bothers to make them it's still not going anywhere :'(
I'd love to have one too, I live in Spain and it would really help with outdoor use in the sun.
Update: oh holy shit, John Gilmore was a Pixel Qi investor, bought the patents to help the company close cleanly rather than go bankrupt, and licenses the patents with an generally-available Defensive Patent License[1]! What a story!!! Thanks John! Pixel Qi is from ~2010, so he's better than halved the time it took to get this amazing technology legally accessible to the world. The gotcha is that it's a somewhat "copy-left" gnu like license, so anyone unwilling to open some of their own patents for use (or not holding patents) is going to have to go to John to get these built, until these patents expire.
Just a quick word on the Pixel Qi screen, it's a LCD screen with a normal transflective mode, but it can also switch into a reflective black and white mode that works great outdoors. 10" 1024x600 screens go for a bit over $100 today.
[1] https://goodereader.com/blog/electronic-readers/the-rise-and...