Organic light emitting display device and method of driving the same

According to an exemplary embodiment of the present disclosure, there is provided an organic light emitting display device and a method of driving the same. The organic light emitting display device comprises a plurality of pixels defined on a plastic substrate; and a plurality of gate lines with a first scan line, a second scan line, and an emission signal line. They are all extended in the same direction to achieve a particular configuration on the plastic substrate. Said particular configuration has one set of gate lines, to which high level signals are to be simultaneously applied, being adjacent to each other, and has another set of gate lines, to which low level signals are to be simultaneously applied, being adjacent to each other. Accordingly, an electric field occurring due to a potential difference in the flexible substrate is minimized and shifting of a threshold voltage Vth of a thin-film transistor may be minimized. Thus, an OLED without an after-image can be provided.