The present disclosure provides a display device according to one embodiment including: a housing, a roller disposed in the housing, a flexible display configured to be rolled around the roller, an upper assembly coupled to an upper region of the flexible display, a lift assembly comprising a plurality of arms coupled to the upper assembly and configured to extend the flexible display from the housing, at least one arm comprising a portion pivotably connecting to a slider through a rod, a motor configured to drive a driving rod to move the slider along the driving rod in a first horizontal direction to lift the lift assembly to extend the flexible display in a vertical direction, a plurality of springs positioned along the driving rod, wherein the plurality of springs are aligned end-to-end to provide a pushing force to the slider in the first horizontal direction and one or more spacers positioned between each of the plurality of springs.