An image display device (100, 200, 300, 400, 500, 600) comprising: a flexible display unit (140, 240, 340, 440, 540, 640) bendable by external force from a first state to a second state, the second state having a different degree of bending than the first state; pressing members (260, 360, 660) disposed on a rear surface of the flexible display unit (140, 240, 340, 440, 540, 640) and to apply the external force to the flexible display unit (140, 240, 340, 440, 540, 640); a driving unit (150, 250, 350, 650) to generate a driving force to provide the external force to the pressing members (260, 360, 660) such that the bending of the flexible display unit is implemented (140, 240, 340, 440, 540, 640); a sensing unit (290, 491, 592, 690) to sense a degree of bending of the flexible display unit (140, 240, 340, 440, 540, 640) to provide a basis for determining a direction of the driving force; and adjusting units (270, 370) connected to the driving unit (250, 350) and the respective pressing members (260, 360) and formed to be movable in a direction away from the driving unit (250, 350) or in a direction toward the driving unit (250, 350) based on the direction of the driving force, wherein a position of at least one adjusting unit (270, 370) corresponds with a degree of bending of the flexible display unit (240, 340), the sensing unit (290, 491, 592, 690) includes a linear position sensor which is configured to generate different electrical signals according to positions of the adjusting unit (270, 370) to sense a degree of bending of the flexible display unit (240, 340) based on the position of the adjusting unit (270, 370). a flexible display unit (140, 240, 340, 440, 540, 640) bendable by external force from a first state to a second state, the second state having a different degree of bending than the first state; pressing members (260, 360, 660) disposed on a rear surface of the flexible display unit (140, 240, 340, 440, 540, 640) and to apply the external force to the flexible display unit (140, 240, 340, 440, 540, 640); a driving unit (150, 250, 350, 650) to generate a driving force to provide the external force to the pressing members (260, 360, 660) such that the bending of the flexible display unit is implemented (140, 240, 340, 440, 540, 640); a sensing unit (290, 491, 592, 690) to sense a degree of bending of the flexible display unit (140, 240, 340, 440, 540, 640) to provide a basis for determining a direction of the driving force; and adjusting units (270, 370) connected to the driving unit (250, 350) and the respective pressing members (260, 360) and formed to be movable in a direction away from the driving unit (250, 350) or in a direction toward the driving unit (250, 350) based on the direction of the driving force, wherein a position of at least one adjusting unit (270, 370) corresponds with a degree of bending of the flexible display unit (240, 340), the sensing unit (290, 491, 592, 690) includes a linear position sensor which is configured to generate different electrical signals according to positions of the adjusting unit (270, 370) to sense a degree of bending of the flexible display unit (240, 340) based on the position of the adjusting unit (270, 370).