A display device includes a main body, a display screen, an orientation sensing module and a display controlling module. The display screen is arranged on the main body for displaying an image in an original orientation. The orientation sensing module includes a first elongated chamber, a first capacitor, a second capacitor and a flowing medium received in the first elongated chamber. The display controlling module is configured for deviating the displayed image at a given angle clockwise or counterclockwise from the first orientation of the image in response to the change of the capacitance of the first capacitor or the second capacitor.