A display device includes a housing; at least one roller positioned within the housing; a display portion including a display panel and a module cover; and an operating portion connected to one end of the display portion and to change a display portion's state, wherein the display panel and the module cover transition from a first state where the display panel and the module cover are wound around the at least one roller to a second state where the display panel and the module cover are unwound from the at least one roller, in contact with each other, and exposed out of the housing. The operating portion includes a motor assembly; a support, one end which is connected to one end of the display portion and an other end which is connected to the motor assembly; a transmission portion, one end of which is connected to the support; and an auxiliary link connected to the housing and connected to an other end of the transmission portion, the auxiliary link including a spring portion to exert force on the transmission portion.