<p>Provided in the present invention for solving a problem is a 2D/3D image display device of a glassless method including a mask-type polarization plate instead of an anisotropic lens. The image display device according to an embodiment comprises a a light source; and a polarization plate including a first polarization area linearly polarizing light output from the light source, and a second polarization area polarizing the light output from the light source round. The image display device in the present invention reduces the costs by using a mask-type polarization plate instead of an anisotropic lens, and improves reflection rate of the polarization plate by using a mirror-type polarization plate to improve brightness of the image display device.</p>
