We all know flexible LED screens are possible, and that someone will eventually come out with a folding smartphone/tablet. The question is, who? Apple? The newly-resurgent, design-focused Microsoft? Judging by the video below, it looks like it may be none other than Lenovo. Take a look at the prototype they revealed last week:

This is exciting because we see a simple, practical application for folding LED screens, rather than an illuminated Wonder-Woman wristband. To have something iPhone-Plus-sized that then doubles itself into a larger screen would provide a welcome marriage of portability and viewability/usability.

One issue the designers are going to have to work out are the fingerprints; with the screen doubled over like that, the right side, or the "rear," is going to be more covered with them than the front. Also: How long do you reckon the screen will last for before all of us are watching movies on it with a dark stripe down the middle?