Pixel and an organic light-emitting display apparatus

An organic light-emitting display apparatus configured to be driven during a frame period comprising an initialization period, a scan period, and an emission period, the organic light-emitting display apparatus comprising

• a pixel comprising:
• a storage capacitor connected between a first power line and a first node;
• a first transistor comprising a gate terminal connected to the first node, wherein the first transistor is connected between second and third nodes;
• a second transistor comprising a gate terminal connected to a scan line, wherein the second transistor is connected between a data line and the second node;
• a third transistor comprising a gate terminal connected to the scan line, wherein the third transistor is connected between the first and third nodes;
• a fourth transistor comprising a gate terminal connected to a control line, wherein the fourth transistor is connected between the first power line and the second node;
• an organic light-emitting diode connected between the third node and a second power line;
• and
• a control driver configured to drive the first and second power lines and the control line, wherein:
• during the initialization period, the control driver applies a first level of voltage to the second power line and a second level of voltage to the first power line,
• during the emission period, the control driver applies a third level of voltage to the first power line and a fourth level of voltage to the second power line, and
• a difference between the first level and the second level is greater than a difference between the third level and the fourth level.

An organic light-emitting display apparatus configured to be driven during a frame period comprising an initialization period, a scan period, and an emission period, the organic light-emitting display apparatus comprising:

• a display unit comprising pixels;
• a voltage generator configured to generate a first driving voltage, a second driving voltage that is less than the first driving voltage, a first gate voltage that is greater than the first driving voltage, and a second gate voltage that is less than the first gate voltage;
• and
• a control driver configured to drive first and second power lines and a control line connected to the pixels by using the first and second driving voltages and the first and second gate voltages,
• wherein the control driver applies the first gate voltage to the second power line during the initialization period.