The mooInk V features an 8-inch folding E Ink screen that’s been tested to survive over 200,000 bends.

(Not literally metal in its liquid form ... to a question in the comments about whether screen creases (one of the main issues with current folding phones) can disappear with the use of this ...

According to recent industry research, Apple is focused on improving durability, enhancing screen flatness ... using a liquid metal hinge in the construction of the folding iPhone, to improve ...