Nintendo filing reveals design for dual-screen gaming device that can be split in two

The second device has a second surface, a second display that is positioned on the second surface, a second rear surface that is on the reverse side from the second surface, and a second connection unit that is positioned on the second rear surface.

When in a second connection state in which the second connection part has been connected to the first connection part in the second orientation, the second rear surface is positioned so as not to cover the first display.”

“The second connection unit can be connected to the first connection unit in a first orientation or in a second orientation that is the reverse from the first orientation.