Display device and method of driving the same
A display device includes a plurality of first pixels disposed in a first pixel area and initialized by a voltage of a first initialization power source, a plurality of second pixels disposed in a second pixel area and initialized by a voltage of a second initialization power source different from the first initialization power source, a data driver that supplies a data signal to a plurality of data lines connected to the first pixels and the second pixels, and a scan driver that supplies a scan signal to a plurality of scan lines connected to the first pixels and the second pixels. A black data signal supplied from the data driver to the first pixels and a black data signal supplied from the data driver to the second pixels are set to the same voltage.
1. A display device, comprising: a plurality of first pixels disposed in a first pixel area and initialized by a voltage of a first initialization power source; a plurality of second pixels disposed in a second pixel area and initialized by a voltage of a second initialization power source different from the first initialization power source; a data driver that supplies a data signal to a plurality of data lines connected to the first pixels and the second pixels; and a scan driver that supplies a scan signal to a plurality of scan lines connected to the first pixels and the second pixels, wherein a black data signal supplied from the data driver to the first pixels and a black data signal supplied from the data driver to the second pixels are set to a same voltage, wherein the first pixels comprise pixels of a first color and pixels of a second color, and wherein the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color are set to be different from each other, wherein the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color are set to be different from each other in response to a different temperature.
2. The display device of claim 1 , wherein a number of the first pixels disposed per unit area is less than a number of the second pixels disposed per unit area.
3. The display device of claim 2 , wherein the first initialization power source is set to a lower voltage than the second initialization power source.
4. The display device of claim 1 , wherein the scan driver generates the scan signal supplied to the first pixels and the second pixels using a same gate-off voltage.
5. The display device of claim 1 , wherein each of the first pixels and the second pixels comprises:
a light emitting element having a second electrode connected to a second power source line to which a second driving power source is supplied;
a first transistor that controls an amount of current supplied from a first driving power source of a first power source line connected to a first electrode to the second power source line via the light emitting element;
a second transistor connected between a data line among the plurality of data lines and the first electrode of the first transistor and having a gate electrode connected to a first scan line among the plurality of scan lines; and
a third transistor connected between a first electrode of the light emitting element and a third power source line.
6. The display device of claim 5 , wherein the first initialization power source is supplied to the third power source line of a first pixel among the plurality of first pixels, and the second initialization power source is supplied to the third power source line of a second pixel among the plurality of second pixels.
7. The display device of claim 5 , wherein the first initialization power source is set to a lower voltage than the second driving power source.
8. The display device of claim 5 , wherein each of the first pixels and the second pixels comprises:
a fourth transistor connected between a gate electrode of the first transistor and a fourth power source line to which a voltage of a third initialization power source is supplied, and having a gate electrode connected to a third scan line among the plurality of scan lines;
a fifth transistor connected between the gate electrode of the first transistor and a second electrode of the first transistor, and having a gate electrode connected to a second scan line among the plurality of scan lines;
a sixth transistor connected between the first power source line and the first electrode of the first transistor, and having a gate electrode connected to an emission control line;
a seventh transistor connected between the second electrode of the first transistor and the first electrode of the light emitting element, and having a gate electrode connected to the emission control line; and
a storage capacitor connected between the gate electrode of the first transistor and the first power source line.
9. The display device of claim 1 , wherein each of the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color is set to a lower voltage as the temperature increases.
10. The display device of claim 1 , wherein the first pixels further comprise pixels of a third color, and the voltage of the first initialization power source supplied to the pixels of the third color is set to be different from the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color.
11. A method of driving a display device, comprising: initializing a light emitting element included in each of a plurality of first pixels disposed in a first pixel area while supplying a voltage of a first initialization power source; and initializing a light emitting element included in each of a plurality of second pixels disposed in a second pixel area while supplying a voltage of a second initialization power source different from the first initialization power source, wherein a voltage of a black data signal supplied to the first pixels and a voltage of a black data signal supplied to the second pixels are set to be the same wherein the first pixels comprise pixels of a first color and pixels of a second color, and wherein the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color are set to be different from each other, wherein the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color are set to be different from each other in response to a different temperature.
12. The method of claim 11 , wherein a number of the first pixels disposed per unit area is less than a number of the second pixels disposed per unit area.
13. The method of claim 12 , wherein the first initialization power source is set to a lower voltage than the second initialization power source.
14. The method of claim 11 , wherein a scan signal supplied to the first pixels and a scan signal supplied to the second pixels are generated by a same gate-off voltage.
15. The method of claim 11 , wherein each of the first pixels implements a luminance while controlling an amount of current flowing from a voltage of a first driving power source to a second driving power source via the light emitting element, and
wherein the first initialization power source is set to a lower voltage than the second driving power source.
16. The method of claim 11 , wherein the voltage of the first initialization power source supplied to the pixels of the first color and the voltage of the first initialization power source supplied to the pixels of the second color are set to a lower voltage as a temperature increases.