Plasma display panel

Provided is a plasma display panel with unit pixels, each of which is formed of a red, green, and blue sub-pixel and an additional sub-pixel of the light having the lowest maximum brightness level. The phosphor layers in the two sub-pixels with the lowest maximum brightness level are selected so the first of the two phosphor layers has a higher brightness level than the second layer, while the second layer has a longer life span property than the first. As a result, the maximum brightness, and the color temperature of the unit pixel, and life span properties are improved over the conventional plasma display panel.