Abstract
In this paper, we suggested a flat type of two observers-tracking parallax stereoscopic display system with three parallax images. There are two display methods can be used for this system. The one rearranges three parallax images in to a compound image in order and the two viewers can always observe stereoscopic images. The another prepares several series of parallax images and displays three parallax images correspond observers' tracking position. In this case, one observer can observe the stereoscopic images with full motion parallax and another observer can observe the stereoscopic images with partial motion parallax.