Pixel circuit and organic light emitting display device including the pixel circuit

A pixel circuit comprising:

• a first node;
• a second node electrically connected to a data line that is configured to transmit a data signal;
• a third node;
• a first transistor including a gate terminal configured to receive a first control signal, a first terminal electrically connected to the first node, and a second terminal electrically connected to the second node;
• a second transistor including a gate terminal configured to receive a second control signal, a first terminal electrically connected to the second node, and a second terminal electrically connected to the third node;
• a third transistor including a gate terminal electrically connected to the first node, a first terminal configured to receive a first power signal, and a second terminal electrically connected to the third node;
• a storage capacitor including a first terminal configured to receive an initialization signal and a second terminal electrically connected to the first node;
• and
• an organic light emitting diode including an anode electrically connected to the third node and a cathode configured to receive a second power signal,
• wherein the first control signal has a first rising edge time and a first falling edge time in a data writing period in which a data writing operation is performed,
• wherein the first control signal has a second rising edge time and a second falling edge time in one or more operating periods other than the data writing period,
• wherein the second rising edge time is longer than the first rising edge time,
• wherein the second falling edge time is longer than the first falling edge time, and
• wherein the second control signal has the first rising edge time and the first falling edge time.

An organic light emitting display device comprising:

• a display panel including a plurality of pixel circuits configured to sequentially perform an on-bias operation, an initializing operation, a threshold voltage compensating operation, a data writing operation, and a light emitting operation;
• and
• a display panel driving circuit configured to provide a data signal, an initialization signal, a first control signal, a second control signal, a first power signal, and a second power signal to the pixel circuits,
• wherein the first control signal and the second control signal have the same voltage levels and the same edge times in a data writing period in which the data writing operation is performed, and
• wherein at least two voltage levels of the first control signal are different from at least two voltage levels of the second control signal in one or more operating periods other than the data writing period, or at least two edge times of the first control signal are different from at least two edge times of the second control signal in the one or more operating periods other than the data writing period.