A stereoscopic image display apparatus includes an image display panel displaying an image for a right eye and an image for a left eye in a regularly mixed manner in a plane, a phase difference element including a right-eye image display portion corresponding to the image for the right eye and a left-eye image display portion corresponding to the image for the left eye to provide different polarization states, a light shield layer formed to project only in an area including a boundary between the right-eye image display portion and the left-eye image display portion of the phase difference element, and a binder layer interposed between the phase difference element and the image display panel, except for a portion between a top surface of the light shield layer and the image display panel, thus bonding the image display panel, the phase difference element, and the light shield layer together.