I'm curious about the theoretical limits of 4K screen sizes. I'm not looking for information on the smallest screen available right now; instead, I want to know what's possible based on current technology. I understand there's a limit to how small pixels can be, which would determine the smallest size for a 4K monitor, but I've struggled to find the relevant information. What should I be looking for?
4 Answers
I found an article that discusses a display with super tiny pixels, equivalent to 32 4K screens packed into just one inch! It dives into our current understanding of the limits of pixel density and minimum pixel size. Pretty fascinating stuff!
You’ve got to consider whether our eyes can actually benefit from such high pixel density. Theoretically, the human eye can resolve about 0.3 arcminutes if you have good vision. If you calculate the pixel density that matches that, you’ll see that after a point, the extra pixels become pointless. Definitely curious about what’s feasible!
Exactly, it also depends on the lens setups we use. If there's a lens in between, it could change how we perceive the density.
I’m not sure of the exact number, but I’d bet the smallest screens would likely be black & white or maybe even black & ultraviolet because UV wavelengths are smaller. Just something to think about!
If we’re talking projection, there’s a limit that comes into play where the longer wavelengths start interfering with the pixels, which affects size. It's an interesting point in the context of display technology.

I remember watching a Vsauce video that touched on this—you're right, there's a limit where having more pixels doesn't really make a difference. I just wonder what's realistically achievable!