https://www.theverge.com/2018/11/8/18074838/samsung-foldable-phone-infinity-flex-display-technology-report

Futuristic-looking bendable tablets and smartphones have captured our imagination for years. Whether it’s the folding tablets found in Westworld or the many book-like slates with foldable pages in Microsoft’s future vision videos, a phone that folds out into a much larger device is dreamlike. Samsung is now trying to make these wild concepts a reality.

The Galaxy maker showed off its new Infinity Flex Display yesterday, a display technology that will allow a tablet-sized screen to fold into a device that approximates the size and shape of a smartphone. While we’ve seen flexible and bendable wearable devices, this is one of the first times we’ve seen such a display in a phone that’s rumored to ship in 2019. Samsung’s device was “disguised” by what appears to be a chunky case, and shown only under dim light, but it’s far more than just concept art.