A flexible display device is disclosed. In one aspect, the device includes: a bracket formed in the shape of a plate and forming curved portions in lateral sides, a flexible display panel disposed in an outer side of the bracket and attached to the curved portions and a cover window disposed in an outer side of the flexible display panel. The device further includes a polarizing plate disposed between the flexible display panel and the cover window and thus attached to the curved portions from an outer edge of the flexible display panel. According to some embodiments, the display device can firmly maintain a cover window, a polarizing plate, and a flexible display panel in a bent state.