A display device is provided. The display device includes a front frame, a rear cover, a display panel, a plurality of sensors and at least one adjusting mechanism. The front frame has an opening. The front frame and the rear cover are fixed to form an accommodation space. The display panel, disposed in the accommodating space, has a display surface exposed to the opening. A plurality of sensors are disposed on the front frame and configured to receive and emit an optical signal above the display surface. At least one adjusting mechanism is disposed on the rear cover and configured to adjust a deformation amount of the front frame to maintain the sensors at a predetermined emitting position and a receiving position.