At the Samsung Developer Conference 2018 (SDC 2018), Samsung showed off their first working foldable display smartphone. The actual details about the device itself was kept under wraps but Samsung is calling this display 'Infinity Flex'. Samsung said that this foldable AMOLED display is designed to be folded hundreds of thousands of times and is also making an emulator SDK along with guidelines available for developers for testing their apps. Some of the specifications of the foldable display are also now available.
https://www.notebookcheck.net/Samsung-officially-unveils-the-Infinity-Flex-foldable-display.357686.0.html