Electronic device including display support structure

An electronic device comprising:

• a first housing;
• a second housing slidably coupled to the first housing in a first direction;
• a flexible display supported by the first housing and the second housing and comprising a display area configured to be reduced and/or expanded based on sliding-in and/or sliding-out of the second housing relative to the first housing;
• and
• a support member disposed under the flexible display to support at least a portion of the flexible display, wherein the support member comprises:
• an elastic body including a first surface facing the flexible display and a second surface facing the opposite direction to the first surface;
• and
• a plurality of shafts at least partially embedded in the elastic body and spaced apart from each other at predetermined intervals, and
• each of the plurality of shafts disposed to have a length in a second direction perpendicular to the first direction,
• wherein a maximum distance between each of the plurality of shafts is configured to be smaller than a circumferential length of a circular cross-section of a unit shaft of the plurality of shafts.