A TV wall mounting device includes a wall mount box with vertical supports, a display mount receiving a TV, and an extending/contracting portion between the box and the display mount. The extending/contracting portion has lower and upper arms rotatably attached to the wall mount with rear axles, a pair of linear actuators rotatably attached to the wall mount, a front portion that rises and lowers with action of the actuators, and a horizontally-swiveling portion that is raised and lowered with the front portion and is capable of rotating right-left with respect to the front portion. The display mount is attached to the horizontally-swiveling portion. Parallel operation of the linear actuators, wherein each actuator extends and retracts while keeping the same length as the other actuator, causes the display mount to go up and down. Differential operation of the actuators causes the display mount to rotate right and left.