This is what I don't get. It's entirely possible that I'm particularly unimaginative, but I can't even think of any devices with screens I'd want to bend. All of my devices bend exactly as much as I want them to: none (or at least negligibly).
How about a 75' TV you can carry around like a scroll.
It'd be a rather thick scroll. :)
The problem of break-ability again comes to mind.
The use case is niche. All the electronics for control still have to be there, so it isn't featherweight or anything, and it is not exactly pocket sized, and now the screen is really fragile.
https://www.microsoft.com/en-us/band
http://www.samsung.com/global/galaxy/gear-fit2/
Actual applications do exist. :)
Lots of cell phones have screens with a slight curve to them now days. Or in the case of Samsung's edge displays, a rather dramatic curve.
To the best of my knowledge, neither display in those fitness products was flexible, just bendable.
I know that as of a few years ago, Corning was hard at work on flexible "glass" for flexible displays.
There problem is, screens need a protective layer on top, and bendable glass tech hasn't caught up. You need to be able to embed a touch layer, have good optical clarity, be scratch resistant, and impart resistant.
I've, gently, played with production ready bendable LCDs. Then realized that they weren't practical for any of the sci-fi scenarios I had imagined.