The present disclosure relates to a rollable display device comprising: a roller; a display part on which the roller rolls and which comprises a display panel and a module cover adjoining and facing the display panel; a supporter fixed to an end portion of the display part; a link assembly comprising an upper link rotatably mounted on the supporter and a lower link connected to the upper link through a joint; and a motor assembly for rotating the lower link; wherein the module cover comprises a first skin and a second skin facing the first skin and having a buckling stress greater than that of the first skin, and the module cover is joined to the display panel so that the second skin thereof faces the display panel.