Organic light emitting diode display

An organic light emitting diode (OLED) display having a first pixel, a second pixel, and a third pixel arranged in a matrix format, the OLED display comprising:

• a substrate;
• gate lines on the substrate;
• data lines crossing the gate lines and insulated from the gate lines;
• a plurality of driving power lines on the substrate, the plurality of driving power lines including a first driving power line transmitting a driving voltage to the first pixel, a second driving power line transmitting a driving voltage to the second pixel, and a third driving power line transmitting a driving voltage to the third pixel;
• a switching thin film transistor connected with the gate lines and the data lines;
• a driving transistor connected with the switching thin film transistor and the driving power lines;
• a first electrode connected with the driving transistor;
• an organic light emitting member formed on the first electrode;
• and
• a second electrode formed on the organic light emitting member,
• wherein a cross-sectional area of the first driving power line, a cross-sectional area of the second driving power line, and a cross-sectional area of the third driving power line are respectively proportional to a consumed current of the first pixel, a consumed current of the second pixel, and a consumed current of the third pixel.