Display device

1. A display device including a display area and a peripheral area outside the display area, the display device comprising:

a substrate;

a first semiconductor layer located in the display area and arranged on the substrate;

a second semiconductor layer arranged on the first semiconductor layer;

a data line located in the display area and extending in a first direction;

an input line located in the peripheral area;

a connection line electrically connecting the data line and the input line to each other, the connection line including a vertical connection line extending in the first direction and a horizontal connection line extending in a second direction crossing the first direction, the horizontal connection line being arranged in a different layer from the vertical connection line, the vertical connection line including a same material as the data line; and

a shielding layer located in the display area and located between the first semiconductor layer and the connection line in a cross-section view,

the shielding layer overlapping at least a portion of the connection line in a plan view.

2. The display device of claim 1 , wherein the connection line does not overlap the second semiconductor layer in the plan view.

3. The display device of claim 1 , wherein the horizontal connection line of the connection line is spaced farther from the second semiconductor layer than the first semiconductor layer in the plan view.

4. The display device of claim 1 , wherein the shielding layer includes:

a first portion extending in the second direction to overlap at least a portion of the horizontal connection line of the connection line in the plan view; and

a second portion extending in the first direction to overlap at least a portion of the vertical connection line of the connection line in the plan view.

5. The display device of claim 1 , wherein the shielding layer does not overlap the second semiconductor layer in the plan view.

6. The display device of claim 1 , further comprising:

a first gate electrode, at least a portion of which overlaps the first semiconductor layer in the plan view; and

a second gate electrode, at least a portion of which overlaps the second semiconductor layer in the plan view.

7. The display device of claim 6 , wherein the shielding layer includes a same material as the second gate electrode.

8. The display device of claim 1 , wherein the first semiconductor layer and the second semiconductor layer include different materials from each other.

9. The display device of claim 8 , wherein the first semiconductor layer includes a silicon semiconductor material, and

the second semiconductor layer includes an oxide semiconductor material.

10. The display device of claim 1 , wherein the shielding layer includes a same material as the second semiconductor layer.

11. The display device of claim 1 , further comprising a driving voltage line arranged on the substrate and extending in the first direction,

wherein the shielding layer is electrically connected to the driving voltage line.

12. The display device of claim 1 , further comprising:

a first gate electrode, at least a portion of which overlaps the first semiconductor layer in the plan view;

a second gate electrode, at least a portion of which overlaps the second semiconductor layer in the plan view; and

a node connection line electrically connecting the first gate electrode to the second semiconductor layer,

wherein the connection line includes a vertical connection line extending in the first direction, and a horizontal connection line extending in a second direction crossing the first direction, and

the node connection line does not overlap the horizontal connection line of the connection line in the plan view.

13. The display device of claim 12 , wherein the node connection line and the horizontal connection line of the connection line include a same material as each other.

14. A display device comprising:

a substrate;

a first semiconductor layer arranged on the substrate;

a first gate electrode arranged on the first semiconductor layer and overlapping at least a portion of the first semiconductor layer in a plan view;

a second semiconductor layer arranged on the first gate electrode and including a material different from a material of the first semiconductor layer;

a second gate electrode arranged on the second semiconductor layer and overlapping at least a portion of the second semiconductor layer in the plan view;

a horizontal connection line arranged on the second gate electrode and extending in a first direction;

an organic insulating layer covering the horizontal connection line;

a vertical connection line electrically connected to the horizontal connection line through a first contact hole defined in the organic insulating layer and extending in a second direction crossing the first direction; and

a shielding layer between the first semiconductor layer and the horizontal connection line in a cross section view and overlapping at least a portion of the horizontal connection line and at least a portion of the vertical connection line in the plan view.

15. The display device of claim 14 , wherein the horizontal connection line is spaced farther from the second semiconductor layer than the first semiconductor layer in the plan view.

16. The display device of claim 14 , wherein the shielding layer is arranged in a same layer as the second gate electrode and includes a same material as the second gate electrode.

17. The display device of claim 14 , wherein the shielding layer is arranged in a same layer as the second semiconductor layer and includes a same material as the second semiconductor layer.

18. The display device of claim 14 , further comprising a data line and a driving voltage line each extending in the second direction and arranged in a same layer as the vertical connection line,

wherein at least a portion of the driving voltage line is electrically connected to the shielding layer through a second contact hole defined in the organic insulating layer.