Organic light emitting display device

An organic light emitting display device comprising:

• a pixel comprising:
• a first transistor configured to control an amount of current flowing from a first driving power source to a second driving power source via an organic light emitting diode;
• a second transistor coupled between a data line and a first electrode of the first transistor, the second transistor being configured to turn on when a scan signal is supplied to an ith (i being a natural number) first scan line;
• and
• a third transistor coupled between a second electrode and a gate electrode of the first transistor, the third transistor being configured to turn on when a scan signal is supplied to an ith second scan line;
• a first scan driver configured to supply a scan signal to an ith first scan line during a first period and a second period of one frame period;
• a second scan driver configured to supply a scan signal to the ith second scan line during the first period;
• and
• a data driver configured to supply a data signal to the data line during the first period and to supply a voltage of a reference power source during the second period.

An organic light emitting display device driven at a first driving frequency or a second driving frequency lower than the first driving frequency, the organic light emitting display device comprising:

• pixels coupled to first scan lines, second scan lines, and data lines;
• a first scan driver configured to supply scan signals to the first scan lines;
• a second scan driver configured to supply scan signals to the second scan lines;
• and
• a timing controller configured to supply a same number of gate start pulses to the first scan driver and the second scan driver when the organic light emitting display device is driven at the first driving frequency, and to supply different numbers of gate start pulses to the first scan driver and the second scan driver when the organic light emitting display device is driven at the second driving frequency.