Data driving circuit, organic light emitting diode display using the same, and method of driving the organic emitting diode display

An organic light emitting diode display, comprising:

• a plurality of first and second scan lines;
• a plurality of data lines intersecting the first and second scan lines;
• a pixel portion including a plurality of pixels connected to the first and second scan lines and the data line;
• a scan driver for supplying first and second scan signals to the first and second scan lines, respectively;
• and
• a data driver connected to the data line for receiving a first current corresponding to a gradation current as a data signal from the pixels;
• wherein the data driver receives a pixel current flowing in each pixel corresponding to the first current, and selectively increases and decreases a level of the first current in accordance with the received pixel current.

A method of driving an organic light emitting diode display, comprising the steps of:

• (a) generating a gradation current corresponding to data;
• (b) receiving a first current corresponding to the gradation current from a pixel;
• (c) receiving a pixel current corresponding to the first current from the pixel;
• (d) comparing the gradation current to the pixel current to obtain a comparison result;
• and
• (e) selectively increasing and decreasing a level of the first current based on the comparison result.

A method of driving an organic light emitting diode display, comprising the steps of:

• (a) generating a gradation current corresponding to data;
• (b) receiving a first current corresponding to the gradation current from a pixel during a first period;
• (c) receiving a pixel current corresponding to the first current from the pixel during a second period excluding the first period;
• (d) comparing the gradation current to the pixel current to obtain a comparison result;
• and
• (e) selectively increasing and decreasing a level of the first current based on the comparison result.