An image display device, comprising: a flexible display unit transformable by a force between a first state and a second state having different curved degrees; a pressing member disposed at a rear surface of the flexible display unit, to apply the force to the flexible display unit; and a driving unit to push or pull the pressing member such that a curved state of the pressing member is implemented; characterized in that: the image display device further comprises an adjusting unit to couple the pressing member and the driving unit to each other, and movable with respect to the driving unit, the adjusting unit to adjust the curved state of the pressing member; and the driving unit includes: a driving motor to generate a rotational force at a driving shaft; a bevel gear to change a direction of the rotational force generated at the driving shaft; and a lead screw coupled to the bevel gear to be rotated by operation of the driving motor, and screw-coupled to the adjusting unit to move the adjusting unit close to or far from the driving unit according to a rotational direction of the lead screw. a flexible display unit transformable by a force between a first state and a second state having different curved degrees; a pressing member disposed at a rear surface of the flexible display unit, to apply the force to the flexible display unit; and a driving unit to push or pull the pressing member such that a curved state of the pressing member is implemented; characterized in that: the image display device further comprises an adjusting unit to couple the pressing member and the driving unit to each other, and movable with respect to the driving unit, the adjusting unit to adjust the curved state of the pressing member; and the driving unit includes: a driving motor to generate a rotational force at a driving shaft; a bevel gear to change a direction of the rotational force generated at the driving shaft; and a lead screw coupled to the bevel gear to be rotated by operation of the driving motor, and screw-coupled to the adjusting unit to move the adjusting unit close to or far from the driving unit according to a rotational direction of the lead screw. the image display device further comprises an adjusting unit to couple the pressing member and the driving unit to each other, and movable with respect to the driving unit, the adjusting unit to adjust the curved state of the pressing member; and the driving unit includes: a driving motor to generate a rotational force at a driving shaft; a bevel gear to change a direction of the rotational force generated at the driving shaft; and a lead screw coupled to the bevel gear to be rotated by operation of the driving motor, and screw-coupled to the adjusting unit to move the adjusting unit close to or far from the driving unit according to a rotational direction of the lead screw. a driving motor to generate a rotational force at a driving shaft; a bevel gear to change a direction of the rotational force generated at the driving shaft; and a lead screw coupled to the bevel gear to be rotated by operation of the driving motor, and screw-coupled to the adjusting unit to move the adjusting unit close to or far from the driving unit according to a rotational direction of the lead screw.