If you took the LCD screen from a tablet. Segmented it into equally sized rectangles, and then added connection ports on the sides of each rectangle. Could you then separate and stack the rectangles on top of eachother to save space? And then fold it back out to create a tablet-sized screen again.
(Crude drawing of what I mean)
It is called microLED, it’s how mega gigantic and movable screens for events are made. It’s completely modular and you can infinitely connect them to one another to make it essentially any size you want.