The biggest e-ink display in the world
tl;dr: What could be an approximate size of the biggest e-ink display with current Kindle-like pixel density if we would use nowadays the biggest available computing power to make it usable?
Imagine that today (beginning of 2020) you can use:
* scenario A: the most powerful processors cluster, stack or the fastest computer ever build,
* scenario B: all the computing power that human-kind currently have (when hypothetically using all computers on Earth to perform a single task),
to power, control and make usable (working, displaying something) the largest possible hypothetical e-ink display. I need to approximate the dimensions of it.
Initial assumptions:
* pixel density of current regular e-ink readers (Kindle like, so not 100 km pixel size, please),
* power issues, building problems, location issues etc. doesn't matter; only correlation between display size and computing power matters.
I am not even sure how to approach to this problem. The only thing that comes to my mind is to:
* take an average computing power of a processor powering an average e-reader (Kindle?),
* divide computing power of the most powerful computing cluster ever build by this number,
* take the resulting number and multiply it by average dimensions of an average e-reader.
Can you verify correctness of above approach and give me some resulting numbers? If not, can you answer this question using any other methodology?
Edit: Some clarifications, in hope to resurrect this question:
1. In both scenarios I am talking about one, single device. So, by no mean I am asking for a solutions like "video wall", "Kindle grid" or "billion of Kindles". The idea of making single e-ink display (as big as possible and answering, how large it is possible to make it), not a network, stack, rack, wall or grid of devices, is the essence of this question.
2. An example Kindle 7 has 6-inch (152 mm) display, 600 × 800 pixels resolution and has 167 PPI density (source). Earth surface has roughly 7.9310^17 square inches (source). Times 167 gives us 1.3210^18 square pixels. Assume that I want to have a planet in similar size to Earth (or bigger, if possible) completely covered with e-ink display (irrespective of oceans, continents etc.), if possible. Do you still claim that you can make a single e-ink screen, consisted with that number of pixels, to be operable (and change the whole view "quite quickly") when you use a Raspberry Pi or similar single mobile processor to achieve that? Do you still claim that I can have that e-ink display as big as I want? Are you certain that I can change display on a hypothetical e-ink screen as big as Saturn or Jupiter surface with a single RPi?
3. I am using Kindle on daily basis. The draw-and-forget feature of e-ink displays has nothing to do with this question. Because I am clearly asking about making such extremely large display operable. 855
You do need computing power for changing image from time to time.
4. I do not understand how number of viewers watching such display has anything to do with this question. I am asking about extremely large display which can change whole image at once. Splitting into sections or refreshing just a very tiny part of the image is out of scenarios.
5. When it comes to performance constraints, I said that it must be operable -- able to change image on the whole display "quite quickly" (in a matter of fraction of second or in similar period of time) -- as in today Kindle.
6. Again (as in 4th point) it is completely out of question and irrelevant from which distance I will be looking at this e-ink screen. It must be as big as possible (to be operable by current processors) with a pixel density similar to 150-250 PPI (or something around this).
7. Again (as above in this question), power, costs, heat generated etc. are out of question. Just the largest possible area, please.
8. Somebody said that I can't use Kindle for playing games or video. What, if I would like to achieve something similar to that? Maybe not close, but similar? What I'd like to change the whole display of such enormous e-ink screen lets say once per second? What is the largest e-ink screen with which I can do that when using nowadays most powerful processor / all processors on Earth?
In addition, I completely don't understand how this question is out-of-topic. I want to build a world in which a single planet's surface is completely covered by an enormous e-ink display. And I want to, know huge that planet can be. How can that be not about world building. 855