Xiaomi has reportedly filed a patent for a wholly new kind of phone design with the China National Intellectual Property Administration (CNIPA). This property allows for the top part of its screen to swivel all the way around so that its main cameras can point in either direction. Accordingly, its display is divided along the line of this novel moving part.
https://www.notebookcheck.net/A-new-Xiaomi-patent-may-take-the-main-camera-selfie-trend-to-a-whole-new-level.462932.0.html