An electroluminescent display device includes first and second substrates facing each other and having a display area and a non-display area surrounding the display area. An array element is formed on the first substrate and an electroluminescent diode is formed on the second substrate. The electroluminescent display device further includes gate and data pad electrodes in the non-display area. The exposed portions of the gate and data pad electrodes are formed of a conductive material having a tolerance to corrosion.