Abstract: A pixel includes a display element, a driving transistor, a storage capacitor, a scan transistor, and a gate control circuit. The display element may emit light for an emission period, wherein the display element includes an anode and a cathode. The driving transistor may control an amount of a driving current flowing through the display element, wherein the driving transistor includes a first gate and a second gate. The storage capacitor is electrically connected to the first gate of the driving transistor. The scan transistor may be turned on for a data-write period for transferring a data voltage to the driving transistor. The lower gate control circuit may electrically connect the second gate of the driving transistor to the anode of the display element for the emission period, and may apply a bias voltage to the second gate of the driving transistor for the data-write period.

Abstract: A rollable display device includes: a soft display panel; a main roller for winding or unwinding the soft display panel; an actuator coupled to the soft display panel to ascend and descend the soft display panel; a housing having the main roller mounted therein, wherein an opening extending in a first direction is defined in a top of the housing to retract and extend the soft display panel therethrough; and an elastic portion having one end coupled to a perimeter of the opening and protruding to cover at least a portion of the opening, wherein the elastic portion includes a rubber portion having a predetermined length along the first direction. The rollable display device may minimize exposure of an interior of the housing to prevent foreign substances from entering.

Abstract: A display device is disclosed. The display device of the present disclosure comprises: an elongated roller; a flexible display panel that is wound on or unwound from the roller; a module cover located at the rear of the display panel; a foldable link that is adjacent to the rear surface of the module cover and is folded or unfolded in the upward and downward directions by being pivoted about a pivot axis parallel to the forward and backward directions; and a sheet that is coupled to the foldable link between the module cover and the foldable link, wherein the coefficient of friction of the sheet is lower than the coefficient of friction of the foldable link.

Abstract: A display device is disclosed. The display device includes a flexible display panel, a module cover positioned behind the flexible display panel, a panel roller coupled to a lower end of the flexible display panel, a subsidiary roller spaced apart from the panel roller and positioned adjacent to a front side of the flexible display panel, a protective sheet in contact with a front side of the flexible display panel when the protective sheet is wound around the panel roller together with the flexible display panel and the module cover, a filler coupled to the subsidiary roller, wherein a portion of the filler is configured to be in contact with the front side of the flexible display panel and a distance between a rotational axis of the panel roller and a rotational axis of the subsidiary roller is fixed.

Abstract: This display device comprises: a housing; a roller; a display panel; a module cover that has a plurality of segments sequentially arranged in the vertical direction of the display panel from the rear side of the display panel, and winds or unwinds from the roller together with the display panel; a foldable link that is located on the rear side of the display panel, and has one side pivotably connected to the housing and the other side pivotably connected to the upper side of the module cover so as to keep the display panel and the module cover erect while unwinding the same from the roller; a speaker assembly that is installed inside the housing and has a curved surface corresponding to the curvature of the roller and spaced apart from the outer circumferential surface of the roller; and a buffering member that is fixed to the curved surface of the speaker assembly between the curved surface of the speaker assembly and the outer circumferential surface of the roller.

Abstract: A rollable display device includes: a soft display panel; a main roller for winding or unwinding the soft display panel; an actuator coupled to the soft display panel to ascend and descend the soft display panel; a housing having the main roller mounted therein, wherein an opening extending in a first direction is defined in a top of the housing to retract and extend the soft display panel therethrough; and an elastic portion having one end coupled to a perimeter of the opening and protruding to cover at least a portion of the opening, wherein the elastic portion includes a rubber portion having a predetermined length along the first direction. The rollable display device may minimize exposure of an interior of the housing to prevent foreign substances from entering.

Abstract: A rollable display device includes: a soft display panel; a main roller for winding or unwinding the soft display panel; an actuator coupled to the soft display panel to ascend and descend the soft display panel; a housing having the main roller mounted therein, wherein an opening extending in a first direction is defined in a top of the housing to retract and extend the soft display panel therethrough; and an elastic portion having one end coupled to a perimeter of the opening and protruding to cover at least a portion of the opening, wherein the elastic portion includes a rubber portion having a predetermined length along the first direction. The rollable display device may minimize exposure of an interior of the housing to prevent foreign substances from entering.

Abstract: A display device is disclosed. The display device includes a flexible display panel, a module cover positioned behind the flexible display panel, a panel roller coupled to a lower end of the flexible display panel, a subsidiary roller spaced apart from the panel roller and positioned adjacent to a front side of the flexible display panel, a protective sheet in contact with a front side of the flexible display panel when the protective sheet is wound around the panel roller together with the flexible display panel and the module cover, a filler coupled to the subsidiary roller, wherein a portion of the filler is configured to be in contact with the front side of the flexible display panel and a distance between a rotational axis of the panel roller and a rotational axis of the subsidiary roller is fixed.

Abstract: A rollable display device includes: a soft display panel; a main roller for winding or unwinding the soft display panel; an actuator coupled to the soft display panel to ascend and descend the soft display panel; a housing having the main roller mounted therein, wherein an opening extending in a first direction is defined in a top of the housing to retract and extend the soft display panel therethrough; and an elastic portion having one end coupled to a perimeter of the opening and protruding to cover at least a portion of the opening, wherein the elastic portion includes a rubber portion having a predetermined length along the first direction. The rollable display device may minimize exposure of an interior of the housing to prevent foreign substances from entering.