A window display device according to the present inventive concept, the window display device includes a display panel configured to display an image, a first glass disposed on a first surface of the display panel, a first laminating member including a first polarizing layer disposed on a first surface of the first glass and a second polarizing layer disposed on a second surface of the first glass. The first polarizing layer includes a first supporting film and a first polarizing film disposed on the first supporting film. The second polarizing layer includes a second supporting film and a second polarizing film disposed on the second supporting film.