Pixel and display device having the same

A pixel comprising:

• a light emitting element;
• a first transistor connected between a first node and a second node, and which controls a driving current supplied to the light emitting element, according to a voltage of a third node connected to a gate electrode of the first transistor;
• a second transistor connected between a data line and the first node, and which is turned on in response to a fourth scan signal;
• a third transistor connected between the second node and the third node, and which is turned on in response to a second scan signal;
• a fourth transistor which is turned on in response to a first scan signal to apply a voltage of a first power source to the first transistor;
• a fifth transistor connected between a driving power source and the first node, and which is turned off in response to an emission control signal;
• a sixth transistor connected between the second node and a first electrode of the light emitting element, and which is turned off in response to the emission control signal;
• and
• a seventh transistor connected between the third node and a second power source, and which is turned on in response to a third scan signal,
• wherein a level of the voltage of the first power source is changed in one frame period.