Glasses-Free 3D Display System Using Grating Film for Viewing Angle Control

We developed a glasses-free 3D stereoscopic display using an LCD display panel and a special grating film for stereoscopic viewing. The display screen is divided in half in order that left and right regions provide the stereoscopic images for left and right eyes. Because both stereoscopic images are not in the same position, it is difficult for the observer to view the 3D image by the stereoviewing. The grating film can solve this problem because it shifts both left and right images to the same position. Moreover this grating film can give us glasses-free 3D viewing because of its view control effect. As the result, the each eye can perceive separated stereoscopic images for left and right eyes without special glasses such as polarized glasses.