Earlier this year, the chief technical officer (CTO) of LG Electronics gave an interview in which he hinted at the possibility of smartphones that may be capable of rolling up completely rather than simply folding in the future. Now, a blog claims to have found a number of patents filed by this OEM that point to relevant form factors.
https://www.notebookcheck.net/LG-may-think-the-future-of-its-smartphones-is-rollable.416991.0.html