Pixel and an organic light emitting display device using the same

An organic light emitting display device comprising:

• a scanning driver that sequentially supplies a scanning signal to scanning lines and supplies a light emitting control signal to light emitting control lines that is aligned with the scanning lines;
• a data driver that supplies a data signal to data lines;
• a pixel unit arranged at an intersection of the scanning lines, the light emitting control lines and the data lines, and including a plurality of pixels supplied with a first power from a first power supply, and a second power supplied from a second power supply;
• wherein each pixel includes:
• an organic light emitting diode connected between the first power supply and the second power supply;
• a first transistor connected between the first power supply and the organic light emitting diode, the first transistor including a gate electrode connected to a first node;
• a second transistor connected between a first electrode of the first transistor connected to the first power supply and a data line, the second transistor including a gate electrode is connected to a current scanning line;
• a third transistor connected between a second electrode of the first transistor connected to the organic light emitting diode and the first node, the third transistor including a gate electrode is connected to the current scanning line;
• a fourth transistor connected between the second electrode of the first transistor and the organic light emitting diode, the fourth transistor including a gate electrode connected to a light emitting control line, wherein the scanning driver supplies a light emitting control signal, to turn on the fourth transistor, to the light emitting control line during a first period that starts when a previous scanning signal supplied to the previous scanning line changes state and the fourth transistor is on, and wherein the scanning driver also supplies the light emitting control signal, to turn off the fourth transistor, to the light emitting control line during a second period after the first period;
• a fifth transistor connected between the second power supply or a third power supply that is an initialization power supply and the first node, the fifth transistor including a gate electrode connected to a previous scanning line;
• a sixth transistor connected directly between the second power supply or the third power supply and the fourth transistor, the sixth transistor including a gate electrode connected to the previous scanning line;
• a storage capacitor connected between the first power supply and the first node;
• and
• a seventh transistor connected between the first electrode of the first transistor and the first power supply, the seventh transistor including a gate electrode connected to the light emitting control line.