Electronic device including flexible display

An electronic device including a flexible display, wherein the electronic device includes:

• a first housing including a first front plate oriented in a first direction and a first rear plate oriented in a second direction opposite the first direction;
• a second housing including a second front plate oriented in the first direction and a second rear plate oriented in the second direction opposite the first direction, wherein the second housing is coupled to surround at least a portion of the first housing and configured to guide a sliding movement of the first structure;
• a flexible display including a first region mounted on one surface of the first structure and a second region extending from the first region, wherein the second region is at least partially accommodated inside the first housing or exposed to the outside of the first housing according to sliding movement of the first housing;
• a guide member including a guide rail disposed at one side edge of the first housing, wherein the guide member is configured to guide the flexible display such that the flexible display moves in a clockwise or counterclockwise direction while maintaining a predetermined curvature;
• a driving unit including circuitry fixedly coupled to one side edge of the second housing and disposed at least partially parallel to the guide member, wherein the driving unit is configured to provide power for sliding the first housing;
• and
• a rail unit comprising a rail configured to receive the power from the driving unit and to move together with the first housing when the first housing slides, wherein the driving unit includes a pinion disposed to be engaged with a rail of the rail unit and a plurality of motor modules including at least one motor disposed on a same rotation shaft as the pinion.