3D stereoscopic technology is a combination of digital technology and traditional printing output, with a sequence of three-dimensional images to form a picture, picture covers over the surface of the grating layer formed. Grating role is to make the picture any different points in the direction of the light injected into a specific person's left eye and right eye. According to the study, we observed the human eye in a three-dimensional objects, as two separate levels in two different locations, the observed object image is different, there is an aberration between them, because of this aberration existence, through the human brain, we can feel the depth of a three-dimensional three-dimensional changes in the world, this is the so-called principle of stereoscopic vision. In this way, people do not need training, do not need the help of instruments and other tools directly on the front of the picture can be clear and unambiguous three-dimensional picture of the wonderful feelings of pleasure.

If the image is composed of a continuous animation, then when the eyes move up and down or flip up and down the grating, the eyes and the grating angle will change, we will see a continuous image after another, that is to see an animation or a change painting effects.