As for the stereoscopic 3D, 3D images can be seen by compounding the incoming images - originally separated from each left and right eye in one's brain. Currently methods to see images without glasses - outstretching the existing type are in the process of development, and so is the Real 3D system.

Samsung SDI has been striving to develop non-glasses Stereoscopic 3D displays using LCD/PDP/OLED and new 3D display technology.

Human eyes realize cubic effects as right and left eyes capture two different images from two different angles. This is called ¡¸binocular parallax¡¹. This is how most display products work to create 3D image.
Our eyes move unconsciously to image the object onto the retina. The retina, made up of light-sensitive cells called rods and cones, absorbs light as its light-sensitive cells begin electronic activities after electrical pulses are formed through the optical nerves. The images created through this process from pupil senses are focused on the upper part of pupil. This indicates that important information is processed in the back of pupil in the visual system. Lastly, brain combines all information sensory organs to produce perfect images as right half of the brain processes left-eye visual field, and left half processes the right-eye visual field.

Stereoscopic method includes glasses type and non-glasses type; glassless type 3D has been actively developed thanks to the improvement of flat displays in the late '90's. Non-glasses type does not apply glasses, but uses optical materials such as Lenticular lens plate, film barrier, and LC shutter forming like a flat display so that the images of the left and right can be separately seen.

Real 3D image method includes Floating image 3D and Holographic 3D methods: by projecting lasers on a rapidly spinning screen to create a three-dimensional image (Floating image 3D), and by recording the image information through the beams from the object and diffraction patterns formed by the reference and projecting the reference beams onto the screen (Holographic method), 3D image can actually be created.