In addition, unlike the pixel driving method shown in FIG. 6, in the pixel driving method shown in FIG. 7, the first power ELVDD is changed to the second voltage level ELVDD_M during the data writing period PB3, and thus a leakage of a current flowing to the anode from the first power ELVDD through the first transistor T11 during the data writing period PB3 can be prevented. That is, a voltage of the first end of the first transistor T11 is set to a voltage (e.g., the second voltage level LEVDD_M) between the first voltage level ELVDD_L and the third voltage level ELVDD_H to thereby remove a current leakage path. Accordingly, variation of a data signal written into the pixel due to the current leakage can be prevented, and display quality deterioration (e.g., visibility of a stain) due to luminance deviation between pixels can be prevented.

Next, a display device according to another exemplary embodiment will be described with reference to FIG. 8 to FIG. 10.

FIG. 8 is a block diagram of a display device constructed according to another exemplary embodiment of the invention. FIG. 8 is not significantly different from the display device of FIG. 1, and therefore the additional elements not shown in FIG. 1 will be mainly described to avoid redundancy.