In terms of low resolution and low brightness that existed in available 3D displayers, an autostereoscopic display method using head-tracked technique based on time-sequential principle with a special directional backlight structure was introduced in this article. The whole system consisted of five main parts: the directional backlight, the multi-user eye tracker, the steerable light-emitting diode array, the controller and the direct-view liquid crystal display (LCD). The directional backlight generated directional exit pupils time-sequentially with the coordination of the eye tracker and the controller. At the same time, it employed a LCD screen which was available to run at a frequency of 120 Hz as the displayer to provide parallax images, so that the left eye of the viewer would only see the corresponding left picture and the right eye of the viewer would only see the corresponding right picture, then a 3D vision would be created by the brain. Compared to current realization methods, the proposed system has no resolution loss and is avaliable for multiple users with a full resolution of 1920*1080. What’s more this system is compatible for both 2D and 3D modes and is much thinner with a width of 18 cm.