Organic electroluminescent display device and driving method of the same

A driving method for an organic electroluminescent display device including pixels each including a first transistor, a second transistor and a capacitor, n scan lines (n is a natural number), m data lines (m is a natural number), and a third transistor, the method comprising:

• sequentially applying scan signals to the scan lines;
• applying data voltages to the data lines according to the scan signals;
• and
• directly supplying a pre-charge voltage to the second transistors and the capacitors of the pixels connected to a kth scan line (k is a natural number equal to or less than n) through the third transistor according to a (k−1)th scan signal,
• wherein a source electrode of the third transistor is connected to the kth scan line providing a kth scan signal to the first transistor, and the pre-charge voltage is provided from the kth scan line,
• wherein a signal of the kth scan line consists of a high level voltage and a low level voltage,
• wherein the kth scan line provides the first transistor with the high level voltage as the kth scan signal, and
• wherein the third transistor provides the second transistors and the capacitors of the pixels connected to the kth scan line with the low level voltage as the pre-charge voltage.

An organic electroluminescent display device, comprising:

• pixels each including:
• an organic light-emitting diode;
• a first transistor outputting a data voltage according to an nth scan signal (n is a natural number);
• a second transistor providing a current to the organic light-emitting diode according to the data voltage;
• and
• first means for storing the data voltage;
• and
• a second means for directly supplying the second transistors and the first means for storing the data voltage of the pixels connected to an nth scan line with a pre-charge voltage according to an (n−1)th scan signal, the pre-charge voltage having an opposite polarity to the data voltage,
• wherein a source electrode of the second means is connected to the nth scan line providing the nth scan signal to the first transistor,
• wherein a signal of the nth scan line consists of a high level voltage and a low level voltage,
• wherein the nth scan line provides the first transistor with the high level voltage as the nth scan signal, and
• wherein the second means provides the second transistors and the capacitors of the pixels connected to the nth scan line with the low level voltage as the pre-charge voltage.