Display panel and display device having the same

1. A display panel comprising a first display area having a first light transmittance and a second display area having a second light transmittance that is higher than the first light transmittance, wherein the display panel further comprises:

a plurality of first pixels disposed in the first display area, each of the plurality of first pixels comprises a first light emitting element;

a plurality of second pixels disposed in the second display area, each of the plurality of second pixels comprises a second light emitting element;

a first source power line connected to a first cathode electrode of the first light emitting element, the first source power line is configured to provide a first source power voltage; and

a second source power line connected to a second cathode electrode of the second light emitting element, the second source power line is configured to provide a second source power voltage having a voltage level that is different from a voltage level of the first source power voltage.

2. The display panel of claim 1 , wherein the voltage level of the second source power voltage is less than the voltage level of the first source power voltage.

3. The display panel of claim 2 , wherein:

the plurality of first pixels further comprises at least one first transistor; and

the plurality of second pixels further comprises at least one second transistor.

4. The display panel of claim 3 , wherein the at least one first transistor and the at least one second transistor are configured to connect a third power line to first and second anode electrodes of the first and second light emitting elements, respectively.

5. The display panel of claim 1 , further comprising a peripheral area surrounding the first display area, wherein the first and second source power lines are disposed in the peripheral area.

6. The display panel of claim 5 , further comprising:

a first bridge electrode configured to connect the first source power line and the first cathode electrode of the first light emitting element; and

a second bridge electrode configured to connect the second source power line and the second cathode electrode of the second light emitting element.

7. The display panel of claim 6 , wherein the first bridge electrode and the second bridge electrode are disposed on a same layer and do not overlap each other.

8. The display panel of claim 7 , wherein the first bridge electrode comprises left and right bridge electrodes that are separated by the second bridge electrode.

9. The display panel of claim 6 , wherein the first and second source power lines are disposed on a same layer and do not overlap each other.

10. The display panel of claim 6 , wherein the first and second source power lines are disposed on different layers and partially overlap each other.

11. The display panel of claim 6 , wherein:

the second display area is surrounded by the first display area; and

the display panel further includes a bridge line that is branched from the second source power line and extends toward the second display area.

12. The display panel of claim 11 , wherein the bridge line is connected to the second cathode electrode of the second light emitting element through the second bridge electrode.

13. The display panel of claim 11 , wherein:

the first source power line comprises first and second sub-power lines that are separated by the bridge line; and

the first and second sub-power lines do not overlap each other.

14. The display panel of claim 1 , wherein:

each of the plurality of first pixels further comprises at least one first transistor; and

each of the plurality of second pixels further comprises at least one second transistor.

15. The display panel of claim 14 , further comprising:

a first driving power line being configured to provide a first driving power voltage; and

a second driving power line being configured to provide a second driving power voltage having a voltage level that is different from a voltage level of the first driving power voltage, and

wherein:

the at least one first transistor is configured to connect the first driving power line to a first anode electrode of the first light emitting element; and

the at least one second transistor is configured to connect the second driving power line to a first anode electrode of the second light emitting element.

16. The display panel of claim 15 , wherein the voltage level of the second driving power voltage is greater than the voltage level of the first driving power voltage.

17. The display panel of claim 1 , wherein:

the second display area comprises a plurality of pixel areas in which the plurality of second pixels are disposed; and

an opening area in which the plurality of first pixels and the plurality of second pixels are not disposed.

18. The display panel of claim 17 , wherein, a total area of the pixel areas is less than a total area of the opening areas in the second display area.

19. A display device comprising:

a display panel including a first display area having a first resolution and a second display area having a second resolution that is lower than the first resolution, the display panel including a first common cathode electrode disposed in the first display area and a second common cathode electrode disposed in the second display area; and

an electronic module disposed below the second display area,

wherein the display panel further includes:

a first source power line electrically connected to the first common cathode electrode and configured to provide a first source power voltage; and

a second source power line electrically connected to the second common cathode electrode and configured to provide a second source power voltage having a voltage level that is different from a voltage level of the first source power voltage.

20. The display device of claim 19 , wherein the first and second common cathode electrodes are electrically insulated from each other.

21. The display device of claim 19 , wherein the voltage level of the second source power voltage is less than the voltage level of the first source power voltage.