A display device is disclosed. According to an aspect of the present disclosure, the display device of the present disclosure may include: a flexible display panel; a panel roller which is elongated, and around which the display panel is rolled or unrolled; and a side frame coupled to a lateral side of the display panel and rolled around or unrolled from the panel roller along with the display panel, wherein the side frame may include: a core elongated along the lateral side of the display panel and facing the lateral side of the display panel; a first part covering the core; a second part extending from the first part and facing one surface of the display panel; and a third part extending from the first part and opposite to the second part with respect to the display panel.