The present disclosure provides a display device comprising: a rollable display panel configured to display an image; a display-panel roller, the display panel being fixed thereto; and a support frame, the display-panel roller being rotatably coupled to the frame, wherein the display-panel roller includes: first and second elongate half-circularly rounded plates to face away each other to form a substantially cylindrical elongate inner space; and first and second support annular rings spaced from each other, wherein the first and second support annular rings are disposed in the inner space. Thus, the rollable display panel may be more easily fixed to the display-panel roller.