Samsung last week unveiled a foldable phone with innovative design and the next day, a patent was published by USPTO.
The patent in the question was published on 8th November 2018 under the title “ELECTRONIC DEVICE INCLUDING FLEXIBLE DISPLAY” and it was filed in April 2018.
The patent application details a foldable phone with two display and a hinge, and it looks pretty good. You can find the patent description below:
According to an embodiment of the present disclosure, an electronic device may comprise a first housing including a first surface and a second surface facing in a direction opposite the first surface, a second housing including a third surface and a fourth surface facing in a direction opposite the third surface, a hinge disposed between the first housing and the second housing configured to provide rotational motion between the first housing and the second housing, and a flexible display disposed from the first surface of the first housing across the hinge to the third surface of the second housing, at least part of the flexible display configured to form a curved surface as the hinge structure is folded, wherein the hinge may include dual-axis hinges configured to provide a first rotational axis allowing the first housing to rotate about the second housing and a second rotational axis allowing the second housing to rotate about the first housing and slides coupled with the first housing and the second housing and configured to provide sliding motion perpendicular to a lengthwise direction of the first housing and the second housing.