A three dimensional display device includes an image display unit. The image display unit includes pixels having first sub-pixels corresponding to a left-eye image and second sub-pixels corresponding to a right-eye image. The three dimensional display device also includes a parallax barrier which is located proximately to the image display unit. The parallax barrier includes light interception portions and light transmission portions alternately and repeatedly arranged in a direction. The parallax barrier also includes color filters arranged between the light interception portions and the light transmission portions. The color filters control paths of lights from the pixels. The invention provided a parallax barrier capable of reducing or minimizing color dispersion to improve the qualityof the three dimensional image and improve the moving freedom of the user.