Bendable display device
A display device includes a substrate having a first area, a second area, and a bending area disposed between the first area and the second area. An inner wiring is disposed in the first area. An outer wiring is disposed in the second area. An interlayer insulating layer covers the inner wiring and the outer wiring, and includes a first contact hole. A conductive layer is disposed on the interlayer insulating layer, and is connected to the inner wiring or the outer wiring through the first contact hole. An inorganic protective layer covers at least a portion of the conductive layer and includes an inorganic insulating material.
1. A display device, comprising:
a substrate comprising a first area, a second area, and a bending area between the first area and the second area;
a first wiring disposed in the first area;
a second wiring disposed in the second area and spaced apart from the first wiring;
a conductive layer extending across the bending area and electrically coupling the first wiring to the second wiring, the conductive layer comprising a bottom surface facing the substrate and a top surface opposite to the bottom surface; and
an inorganic protective layer on the top surface of the conductive layer and covering a first edge of the conductive layer, in the first area, and covering a second edge of the conductive layer, in the second area, wherein the inorganic protective layer has an opening in the bending area that extends through a full thickness of the inorganic protective layer such that the inorganic protective layer in the first area is not connected to the inorganic protective layer in the second area.
2. The display device of claim 1 , further comprising;
at least one insulating layer on the first and the second wirings, the at least one insulating layer having a first contact hole and a second contact hole,
wherein a first portion of the conductive layer is connected to the first wiring via the first contact hole and a second portion of the conductive layer is connected to the second wiring via the second contact hole.
3. The display device of claim 2 , wherein the at least one insulating, layer has an opening in the bending area.
4. The display device of claim 3 , further comprising:
an organic insulating layer, at least a portion of the organic insulating layer being in the opening of the at least one insulating layer.
5. The display device of claim 4 , wherein the organic insulating layer has a through hole overlapping the first contact hole, and the through hole is defined by a hole edge of the organic insulting layer,
wherein an edge of the first wiring is spaced apart from the hole edge of the organic insulting layer.
6. The display device of claim 2 , wherein the at least one insulating aver comprises an inorganic insulating material.
7. The display device of claim 1 , wherein the conductive layer comprises a multi-layered structure that includes a first metal element and a second metal element different from the first metal element.
8. The display device of claim 7 , wherein the multi-layered structure comprises a Ti layer, an Al layer, and a Ti layer sequentially stacked.
9. The display device of claim 1 , further comprising:
a protective layer disposed on the conductive layer in the bending area, and including an organic insulating material.
10. A display device, comprising:
a substrate including a bending area between a first area and a second area, the substrate being bent in relation to a bending axis;
a first insulating layer on the substrate;
a first wiring disposed on the first insulating layer in the first area;
a second wiring disposed on the first insulating layer in the second area, the first and second wirings being spaced apart from each other;
a conductive layer extending across the bending area and electrically coupling the first wiring to the second wiring, the conductive layer comprising a bottom surface facing the substrate and a top surface opposite to the bottom surface; and
an inorganic protective layer on the top surface of the conductive layer, the inorganic protection layer including a first part covering a top surface of a first edge portion of the conductive layer in the first area, and a second part covering a top surface of a second edge portion of the conductive layer in the second area, wherein the inorganic protective layer has an opening in the bending area, and the first part and the second part of the inorganic protective layer are separated from each other with respect to the opening.
11. The display device of claim 10 , further comprising:
a second insulating layer on the first and the second wirings, the second insulating layer having a plurality of contact holes,
wherein the conductive layer is connected to the first wiring and the second wiring via the plurality of contact holes.
12. The display device of claim 11 , wherein the first and second insulating layers comprise an inorganic insulating material and has an opening in the bending area.
13. The display device of claim 12 , further comprising:
an organic insulating layer, at least a portion of the organic insulating layer being in the opening of the first and second insulating layers.
14. The display device of claim 13 , wherein the organic insulating layer has a through hole overlapping the plurality of contact holes.
15. The display device of claim 11 , wherein the conductive layer comprises a multi-layered structure that includes a first metal element and a second metal element different from the first metal element.
16. The display device of claim 15 , wherein the multi-layered structure comprises a Ti layer, an Al layer, and a Ti layer sequentially stacked.
17. The display device of claim 1 , wherein the inorganic protective layer is absent from the bending, area.
18. The display device of claim 10 , wherein the inorganic protective layer is absent from the bending area.