Display panel including an initialization voltage line and an auxiliary voltage line and display device including the same
A display panel includes: a substrate including a first area and a second area surrounding the first area; a first initialization voltage line extending in a first direction and electrically connected to the first display element; a second initialization voltage line extending in the first direction and electrically connected to the second display element; an auxiliary voltage line arranged on a layer different from layers on which the first initialization voltage line and the second initialization voltage line are arranged and electrically connecting the first initialization voltage line and the second initialization voltage line that are apart from each other; and a first insulating layer covering the first initialization voltage line, the second initialization voltage line, and the auxiliary voltage line and arranged below the plurality of display elements.
1. A display panel comprising:
a substrate including a first area and a second area surrounding the first area;
a plurality of display elements in the second area and including a first display element and a second display element that are apart from each other with the first area therebetween;
a first initialization voltage line extending in a first direction and electrically connected to the first display element;
a second initialization voltage line extending in the first direction and electrically connected to the second display element;
an auxiliary voltage line arranged on a layer different from layers on which the first initialization voltage line and the second initialization voltage line are arranged and electrically connecting the first initialization voltage line and the second initialization voltage line that are apart from each other; and
a first insulating layer covering the first initialization voltage line, the second initialization voltage line, and the auxiliary voltage line and arranged below the plurality of display elements.
2. The display panel of claim 1 , wherein each of the plurality of display elements includes a pixel electrode, an opposite electrode above the pixel electrode, and an emission layer between the pixel electrode and the opposite electrode, and
the auxiliary voltage line is below the pixel electrode with the first insulating layer therebetween.
3. The display panel of claim 1 , further comprising a second insulating layer arranged between the first and second initialization voltage lines and the auxiliary voltage line.
4. The display panel of claim 1 , further comprising:
a plurality of thin film transistors and a storage capacitor, the plurality of thin film transistors and the storage capacitor being electrically connected to the first display element,
wherein the first initialization voltage line and the second initialization voltage line include a same material as that of one of electrodes of the storage capacitor.
5. The display panel of claim 4 , wherein the storage capacitor includes a bottom electrode and a top electrode, and
the first initialization voltage line and the second initialization voltage line include a same material as that of the top electrode.
6. The display panel of claim 4 , further comprising a contact metal connecting one of the plurality of thin film transistors to the first display element,
wherein the auxiliary voltage line includes a same material as that of the contact metal.
7. The display panel of claim 1 , further comprising a mediation metal layer between the first initialization voltage line and the auxiliary voltage line, and between the second initialization voltage line and the auxiliary voltage line.
8. The display panel of claim 1 , further comprising:
a first scan line extending in the first direction and electrically connected to the first display element; and
a second scan line extending in the first direction and electrically connected to the second display element,
wherein the first scan line is apart from the second scan line with the first area therebetween.
9. The display panel of claim 1 , further comprising:
a first emission control line extending in the first direction and electrically connected to the first display element; and
a second emission control line extending in the first direction and electrically connected to the second display element,
wherein the first emission control line is apart from the second emission control line with the first area therebetween.
10. The display panel of claim 1 , further comprising an initialization power supply line in an outer area of the substrate, wherein the initialization power supply line is arranged between the substrate and the first insulating layer.
11. The display panel of claim 10 , further comprising:
a first data line extending in a second direction intersecting the first direction and connected to the first display element; and
a second data line extending in the second direction and connected to the second display element,
wherein the initialization power supply line includes a same material as that of the first data line or the second data line.
12. A display device including at least one component area inside a display area, and a non-display area surrounding the display area, the display device comprising:
a plurality of display elements on the display area, each of the plurality of display elements including a pixel electrode, an emission layer, and an opposite electrode that are sequentially stacked;
a first initialization voltage line electrically connected to a first display element among the plurality of display elements and extending in a first direction in the display area;
a second initialization voltage line electrically connected to a second display element among the plurality of display elements, extending in the first direction in the display area, and being apart from the first initialization voltage line with the at least one component area therebetween;
an auxiliary voltage line electrically connecting the first initialization voltage line to the second initialization voltage line; and
a first insulating layer arranged between the auxiliary voltage line and the pixel electrode.
13. The display device of claim 12 , further comprising: a second insulating layer between the first and second initialization voltage lines and the auxiliary voltage line.
14. The display device of claim 12 , further comprising thin film transistors and a storage capacitor, the thin film transistors being electrically connected to the first display element, and the storage capacitor including a bottom electrode and a top electrode,
wherein the first initialization voltage line and the second initialization voltage line include a same material as that of the top electrode of the storage capacitor.
15. The display device of claim 14 , further comprising a contact metal connecting one of the thin film transistors to the first display element,
wherein the auxiliary voltage line includes a same material as that of the contact metal.
16. The display device of claim 12 , wherein the first initialization voltage line and the second initialization voltage line are arranged on a same layer.
17. The display device of claim 16 , further comprising a mediation metal layer between the first initialization voltage line and the auxiliary voltage line, and between the second initialization voltage line and the auxiliary voltage line.
18. The display device of claim 12 , further comprising:
a first scan line extending in the first direction and electrically connected to the first display element; and
a second scan line extending in the first direction and electrically connected to the second display element,
wherein the first scan line is apart from the second scan line with the at least one component area therebetween.
19. The display device of claim 12 , further comprising:
a first emission control line extending in the first direction and electrically connected to the first display element; and
a second emission control line extending in the first direction and electrically connected to the second display element,
wherein the first emission control line is apart from the second emission control line with the at least one component area therebetween.
20. The display device of claim 12 , further comprising: an initialization power supply line in the non-display area.
21. The display device of claim 20 , wherein the initialization power supply line is below the first insulating layer.
22. The display device of claim 20 , further comprising:
a first data line extending in a second direction intersecting the first direction and connected to the first display element; and
a second data line extending in the second direction and connected to the second display element,
wherein the initialization power supply line includes a same material as that of the first data line or the second data line.
23. The display device of claim 12 , wherein the at least one component area includes a first component area and a second component area arranged in the first direction.
24. The display device of claim 23 , wherein the first initialization voltage line is on one side of the first component area, and the second initialization voltage line is on one side of the second component area, and
the first component area and the second component area are between the first initialization voltage line and the second initialization voltage line that are apart from each other.