| 主权项 |
1. A variable display device, comprising:
a display panel; a joint plate installed at a rear surface of the display panel and including a third plate that is a center plate between a plurality of plates including first, second, fourth and fifth plates each configured to be rotated by a hinge; and a pair of driving systems installed at a rear surface of the joint plate, facing against each other and rotating the plurality of plates with respect to a normal direction to the joint plate, each driving system including a motor unit on the center plate and a driving unit on an immediately adjacent plate, wherein the motor unit includes a motor, an eccentric cam being eccentric with respect to a rotation axis of the motor, and a shaft connected to the eccentric cam, and wherein the motor eccentrically rotates the eccentric cam in less than a full revolution, which moves the shaft in a linear direction substantially parallel with the rotation axis of the motor, depending on a rotational direction of the eccentric cam, and wherein the display panel is variably driven in a flat mode having a flat surface or a curved mode having a curved surface by the joint plate and the driving system, wherein each driving system further includes a couple of first levers and a couple of second levers, and wherein the couple of first levers have first ends fixed to the third plate and second ends connected to third ends of the couple of second levers through a shaft bearing, the couple of second levers have the third ends and fourth ends fixed to the first plate, and the driving unit moves connecting portions of the first and second levers vertically. |
