An organic electro luminescence device includes a gate line, a data line intersecting the gate line and defining a pixel area, a power line parallel to the data line, and an array element formed in the pixel area and corresponding to an organic electro luminescence diode, the array element including a switching TFT, a drive TFT and a storage capacitor, and the drive TFT including source and drain electrodes, one of the source and drain electrodes having at least one vertical protrusion, and another of the source and drain electrodes having at least two vertical protrusions.