Time after time, a display manufacturer will come up with some ideas for making a flexible screen, and end up showing it off at a trade expo. Over the years, we've seen variations on this tech keep popping up, but we still haven't been at the place yet where anyone's ready to produce a finished, commercial product.
That's not to say that some of the prototypes we've seen haven't been very impressive, but it seemed like the manufacturers involved may still be struggling to figure out a way to integrate these kind of systems with smartphones that feels actually useful, and not just like a gimmick.