Re: Bend vs Fold
They already are properly flexible and can be hit with a hammer - check out Samsung Youm, some 5 years old I believe. OLEDs are flexible but on phones/tablets have a glass front that solidifies them. Without the glass, I suspect the surface would be prone to scratching badly.
I can see these displays being used on things like car dashboards where the dash itself is the display rather than a rectangular thing stuck into a plastic dash - the possibilities are profound.