Electronic device comprising flexible display

An electronic device comprising:

• a housing having an opening formed on one side thereof;
• a roller coupled to an inside of the housing so as to be rotatable;
• and
• a flexible display module connected to the roller at one end portion thereof and configured to be rolled around or unrolled from the roller depending on a direction of rotation of the roller, the flexible display module being configured to move into or out of the housing through the opening,
• wherein the flexible display module includes:
• a flexible display,
• a heat radiating sheet disposed on at least a portion of a rear surface of the flexible display, and
• a flexible display support member disposed on at least a portion of a rear surface of the heat radiating sheet to support the flexible display,
• wherein the flexible display support member includes a plurality of support bars configured to extend in a direction substantially parallel to the roller,
• wherein the plurality of support bars are spaced apart from each other by a gap,
• wherein the heat radiating sheet includes a plurality of attachment portions to which the plurality of support bars and the rear surface of the flexible display are attached and a plurality of folding portions disposed between the plurality of attachment portions adjacent to each other, and
• wherein the plurality of folding portions are configured such that at least portions thereof are located in spaces separating the plurality of support bars.