Display device and method of driving the same

A display device comprising:

• a scan driver configured to drive first scan lines and second scan lines;
• a data driver configured to drive data lines;
• a sensor configured to drive sensing lines;
• and
• a pixel comprising a light-emitting element configured to receive a voltage of an initialization power source such that the light-emitting element does not emit light during a part of a period in which a voltage of a reference power source is supplied from a corresponding data line, a driving transistor configured to control an amount of current supplied to the light-emitting element, a switching transistor coupled between the corresponding data line among the data lines and the driving transistor, and a sensing transistor coupled between the light-emitting element and a corresponding sensing line among the sensing lines,
• wherein the sensor is configured to sense deterioration information of the light-emitting element in a state in which the switching transistor and the sensing transistor are turned on,
• wherein the sensor comprises sensing channels for sensing the deterioration information, at least one of the sensing channels comprising:
• a sensing capacitor comprising a first electrode coupled to a base power source, and a second electrode;
• a first switch coupled between the corresponding sensing line and the initialization power source;
• and
• a second switch coupled between the corresponding sensing line and the second electrode of the sensing capacitor, and
• wherein the scan driver is further configured to concurrently turn on the switching transistor and the sensing transistor, and turn off the sensing transistor before turning off the switching transistor after the deterioration information is sensed.

A method of driving a display device, the method comprising:

• supplying a voltage of a reference power source to a first node through a data line and a switching transistor;
• supplying a voltage of an initialization power source to a first electrode of a light-emitting element such that the light-emitting element does not emit light during a part of a period in which the voltage of the reference power source is supplied;
• supplying a current from a driving transistor to the light-emitting element in response to the voltage of the reference power source supplied to the first node during a remainder of the period in which the voltage of the reference power source is supplied;
• sensing, with a sensor, a voltage applied to the first electrode of the light-emitting element through a sensing transistor coupled between a sensing line and the first electrode of the light-emitting element by maintaining the switching transistor and the sensing transistor in a turned-on state, wherein the sensor comprises sensing channels for sensing the voltage applied to the first electrode of the light-emitting element, at least one of the sensing channels comprising:
• a sensing capacitor comprising a first electrode coupled to a base power source, and a second electrode;
• a first switch coupled between the sensing line and the initialization power source;
• and
• a second switch coupled between the sensing line and the second electrode of the sensing capacitor;
• and
• concurrently turning on the switching transistor and the sensing transistor, and turning off the sensing transistor before turning off the switching transistor after sensing the voltage applied to the first electrode of the light-emitting element.