Electronic device including flexible display

An electronic device comprising:

• a flexible display;
• a first housing configured to move to correspond to change in a shape of the flexible display, and including a contact region;
• a second housing configured to slide in a direction opposite to a direction in which the first housing moves of the first housing and to mount the flexible display;
• at least one rotary contact structure making contact with the contact region;
• and
• a printed circuit board (PCB) electrically connected with the at least one rotary contact structure,
• wherein the at least one rotary contact structure comprises:
• a rotating part configured to maintain contact with the contact region while rotating in a process of changing the shape of the flexible display,
• a circular central part disposed at a center of an inside of the rotating part,
• a plurality of conductive balls interposed between the rotating part and the circular central part, and
• a support part configured to support the circular central part and to electrically connect the circular central part with the PCB,
• wherein the rotating part includes a first guide for moving or rotating the plurality of conductive balls on an inner surface, and
• wherein the circular central part includes a second guide for moving or rotating the plurality of conductive balls on an outer surface.