3D Hdtvs For Sale buy online and free shipping with this store, Get a great deal on new and used 3D Hdtvs For Sale? How it Works >> Our eyes are spaced apart from each other, which means our left and right retinas see objects at slightly different angles. In real life, the brain merges these two images into a single three-dimensional image. To recreate this experience of depth on television, a 3D TV will display two separate but overlapping images of the same scene simultaneously, and at slightly different angles as well.