Display panel and repair method thereof
A display panel can include a substrate, a light-emitting element including an emission region on the substrate, a reference voltage line adjacent to the light-emitting element, and a branch line connected to the reference voltage line to apply a reference voltage to light-emitting element. The light-emitting element can emit light on the emission region in a direction of the substrate. Further, the branch line can include a semiconductor layer, and the semiconductor layer of the branch line can overlap the emission region.
1. A display panel comprising:
a substrate;
a light-emitting element including an emission region on the substrate;
a reference voltage line adjacent to the light-emitting element; and
a branch line connected to the reference voltage line to apply a reference voltage from the reference voltage line to the light-emitting element via a switching element,
wherein the light-emitting element emits light to the substrate,
wherein the branch line includes a semiconductor layer, and
wherein the semiconductor layer of the branch line overlaps the emission region.
2. The display panel of claim 1 , further comprising a hank disposed on an anode of the light-emitting element,
wherein the bank exposes a portion of the anode and defines an opening including the emission region, and
at least a portion of the semiconductor layer of the branch line overlaps the anode in the opening.
3. The display panel of claim 1 , further comprising:
a pixel circuit configured to drive the light-emitting element;
a power line configured to apply a pixel driving voltage to the pixel circuit;
a data line configured to supply a data voltage to the pixel circuit; and
a gate line configured to supply a gate voltage to the pixel circuit.
4. The display panel of claim 3 , wherein the power line includes:
a first power line connected to the pixel circuit in a first direction to apply the pixel driving voltage to the pixel circuit; and
a second power line arranged in a second direction intersecting the first direction, and connected to the first power line,
wherein at least a portion of the first power line has a multi-layered structure in which a semiconductor layer and a metal layer are stacked.
5. The display panel of claim 1 , wherein the branch line is arranged on a layer different from the reference voltage line and is connected to the reference voltage line through a contact hole.
6. The display panel of claim 5 , wherein the branch line includes:
a single-layered branch line including the semiconductor layer; and
a multi-layered branch line including the semiconductor layer and a metal layer stacked on a portion of the semiconductor layer.
7. The display panel of claim 6 , wherein the multi-layered branch line is arranged to cross over the data line, and the single-layered branch line is arranged to cross over the emission region.
8. The display panel of claim 3 , wherein the branch line includes:
a line portion arranged along a first direction to cross over the emission region; and
at least a branch portion bent from the line portion in a second direction intersecting the first direction to be connected to the pixel circuit.
9. The display panel of claim 1 , wherein the branch line and the reference voltage line are arranged to be connected to each other on a same layer.
10. The display panel of claim 9 , wherein the reference voltage line includes the semiconductor layer.
11. A display panel comprising:
a substrate;
a transparent anode on the substrate;
a reference voltage line adjacent to the transparent anode; and
a branch line connected to the reference voltage line to apply a reference voltage from the reference voltage line to the transparent anode via a switching element,
wherein the branch line includes a semiconductor layer, and
wherein the semiconductor layer of the branch line overlaps the transparent anode.
12. The display panel of claim 11 , further comprising a bank disposed on the transparent anode,
wherein the bank exposes a portion of the transparent anode and defines an opening including an emission region, and
at least a portion of the semiconductor layer of the branch line overlaps the transparent anode in the opening.
13. The display panel of claim 12 , further comprising:
a pixel circuit configured to drive a light-emitting element including the transparent anode;
a power line configured to apply a pixel driving voltage to the pixel circuit;
a data line configured to supply a data voltage to the pixel circuit; and
a gate line configured to supply a gate voltage to the pixel circuit.
14. The display panel of claim 13 , wherein the branch line includes:
a line portion arranged along a first direction to cross over the transparent anode; and
at least a branch portion bent from the line portion in a second direction intersecting the first direction to be connected to the pixel circuit.
15. The display panel of claim 14 , wherein at least a portion of the line portion overlaps the transparent anode between the emission region and the gate line.
16. The display panel of claim 14 , wherein at least a portion of the branch portion overlaps the transparent anode.
17. The display panel of claim 14 , wherein at least a portion of the branch portion overlaps the bank.
18. The display panel of claim 14 , wherein at least a portion of the line portion has a multi-layered structure including he semiconductor layer and a metal layer stacked on the semiconductor layer.
19. The display panel of claim 14 , wherein at least a portion of the branch portion includes a multi-layered structure including the semiconductor layer and a metal layer stacked on the semiconductor layer.
20. The display panel of claim 14 , wherein at least a portion of the line portion and at least a portion of the branch portion have a single-layered structure including the semiconductor layer.