The invention provides a display device, which comprises a display panel, a transparent substrate, a switch array, a tracker and a processor, wherein the display panel comprises pixels arranged in anarray; the transparent substrate is arranged in a light emitting direction of the display panel; the switch array is arranged on one side, way from the display panel, of the transparent substrate; theswitch array comprises a plurality of switches, each switch corresponds to at least one pixel on the display panel, and the switches are used for opening or closing light emitting channels of the pixels; the tractor is used for capturing binocular position coordinates of an observer, and determining positions of the two eyes; and the processor is used for determining a reference line during stereoscopic display according to the coordinates of the two eyes, controlling the target switches on the reference line to open the light emitting channels, and controlling the target pixels on connectinglines of the two eyes and the target switches to display a stereoscopic picture. The display device controls the target switches on the reference line to open the light emitting channels according tothe positions of the two eyes of the observer, and the correspondingly lit pixels change when the positions of the two eyes change accordingly, thereby increasing the viewing angle of the display device.