Organic light emitting display device

An organic light emitting display device comprising a display panel including a plurality of pixels, each pixel including sub-pixels each having an organic light emitting diode (OLED), a driving TFT controlling a driving current flowing through the OLED, a first switch TFT applying a data voltage to a gate electrode of the driving TFT, a second switch TFT applying a reference voltage to a source electrode of the driving TFT, and a storage capacitor connected between the gate electrode and the source electrode of the driving TFT, comprising:

• a data driving unit outputting the data voltage to a data line connected to the sub-pixels, and outputting the reference voltage to a reference line connected to the sub-pixels;
• and
• a gate driving unit outputting signals to a first gate line connected to the gate electrode of the first switch TFT and a second gate line connected to the gate electrode of the second switch TFT;
• a timing controller temporally separating a sensing driving from a display driving, wherein the sensing driving senses driving characteristics of the sub-pixels and updating compensation values according to the sensed characteristics and the display driving displays the input image reflecting the compensation values according to a predetermined control sequence,
• wherein the first gate line controls supply of the data voltage and the second gate line controls the reference voltage, and two adjacent sub-pixels emitting a same color and neighboring in a direction in which the data line advances are supplied with the data voltage through different data lines and share the first and second gate lines to compensate for a driving characteristic of the driving TFT of the sub-pixels.