Abstract: A flexible display device includes a display panel having pliability and a dielectric elastomer unit on the display panel. The dielectric elastomer unit is reversibly deformable by an applied voltage to provide stiffness to the display panel.

Abstract: An organic light emitting display device includes a substrate including a light-emitting region and a transparent region; a first transistor disposed in the light-emitting region, a second transistor disposed in the light-emitting region and disposed adjacent to the first transistor; a capacitor disposed in the light-emitting region, and disposed adjacent to the first transistor, and including a first capacitor electrode and a second capacitor electrode overlapping with the first capacitor electrode; and a pixel defining layer disposed on the first transistor, the second transistor and the capacitor, and including a first opening disposed in the light-emitting region and a second opening disposed in the transparent region, and including an opaque material.

Abstract: A flexible display device includes a display panel having pliability and a dielectric elastomer unit on the display panel. The dielectric elastomer unit is reversibly deformable by an applied voltage to provide stiffness to the display panel.

Abstract: A mobile device including a flexible display device includes a main display unit disposed on the front of the mobile device, a upper secondary display unit disposed on an upper side of the main display unit, a lower secondary display unit disposed on a lower side of the main display unit, a left secondary display unit disposed on a left side of the main display unit, a right secondary display unit disposed on a right side of the main display unit, and a control unit configured to control the flexible display device to change an icon when the icon displayed on one of the upper, lower, left and right secondary display units passes a border of the one of the upper, lower, left and right secondary display units.