Bending area signal wire and display device having the same
A display device includes a display area including a display layer, a folding area extending from the display area and at which the display device is bendable, and a signal wire which is connected to the display layer and extends across the folding area. The signal wire includes within the folding area a first signal wire layer which crosses the folding area, a second signal wire layer which is on the first signal wire layer and electrically connected to the first signal wire layer, the second signal wire layer including a plurality of patterns spaced apart from each other along the signal wire, and a metal layer which is on the second signal wire layer and electrically connected to the second signal wire layer.
1 . A display device comprising:
a display area including a display layer;
a folding area extending from the display area and at which the display device is bendable; and
a signal wire which is connected to the display layer and extends across the folding area,
wherein the signal wire includes within the folding area:
a first signal wire layer which crosses the folding area,
a second signal wire layer which is on the first signal wire layer and electrically connected to the first signal wire layer, the second signal wire layer including a plurality of patterns spaced apart from each other along the signal wire,
a metal layer which is on the second signal wire layer and electrically connected to the second signal wire layer, and
a resin layer on the metal layer.
2 . The display device of claim 1 , wherein the first signal wire layer includes:
a (1-1)-th area adjacent to the display area,
a (1-2)-th area further from the display area than the (1-1)-th area, and
a connection area which connects the (1-1)-th area and the (1-2)-th area to each other.
3 . The display device of claim 2 , wherein a width of each of the (1-1)-th area and the (1-2)-th area is greater than a width of the connection area.
4 . The display device of claim 2 , wherein the (1-1)-th area, the connection area, and the (1-2)-th area are arranged along a same virtual line.
5 . The display device of claim 2 , wherein
a (2-1)-th pattern among the plurality of patterns of the second signal wire layer overlaps the (1-1)-th area of the first signal wire layer, and
a (2-2)-th pattern among the plurality of patterns of the second signal wire layer overlaps the (1-2)-th area of the first signal wire layer.
6 . The display device of claim 5 , wherein
the metal layer commonly overlaps the (2-1)-th pattern and the (2-2)-th pattern of the second signal wire layer which are spaced apart from each other.
7 . The display device of claim 1 , wherein within the folding area:
the first signal wire layer is provided in plural including a plurality of first signal wire layers,
the second signal wire layer is provided in plural including a plurality of second signal wire layers, and
the resin layer covers the plurality of the first signal wire layers and the plurality of the second signal wire layers.
8 . The display device of claim 1 , further comprising:
an insulating layer which is on the second signal wire layer and defines a first opening corresponding to the folding area,
wherein the metal layer and the resin layer are within the first opening of the insulating layer.
9 . The display device of claim 8 , wherein
the display layer includes:
a first electrode,
a partition wall defining a second opening which corresponds to the display area and exposes the first electrode to outside the partition wall,
a second electrode overlapping the first electrode, and
a light emitting layer between the first electrode and the second electrode, and the insulating layer and the partition wall are respective portions of a same layer.
10 . A display device comprising:
a display area including a display layer;
a folding area extending from the display area and at which the display device is bendable; and
a signal wire which is connected to the display layer and extends across the folding area,
wherein the signal wire includes within the folding area:
a first signal wire layer including a plurality of patterns spaced apart from each other along the signal wire,
a second signal wire layer which is on the first signal wire layer, electrically connected to the first signal wire layer and crosses the folding area,
a metal layer which is on the second signal wire layer and electrically connected to the second signal wire layer, and
a resin layer on the metal layer.
11 . The display device of claim 10 , wherein the second signal wire layer includes:
a (2-1)-th area adjacent to the display area,
a (2-2)-th area adjacent further from the display area than the (2-1)-th area, and
a connection area which connects the (2-1)-th area and the (2-2)th area to each other.
12 . The display device of claim 11 , wherein a width of each of the (2-1)-th area and the (2-2)-th area is greater than a width of the connection area.
13 . The display device of claim 11 , wherein
the (2-1)-th area of the second signal wire layer overlaps a (1-1)-th pattern among the plurality of patterns of the first signal wire layer, and
the (2-2)-th area of the second signal wire layer overlaps a (1-2)-th pattern among the plurality of patterns of the first signal wire layer.
14 . The display device of claim 13 , wherein the metal layer overlaps the connection area of the second signal wire layer.
15 . The display device of claim 10 , wherein within the folding area:
the first signal wire layer is provided in plural including a plurality of first signal wire layers,
the second signal wire layer is provided in plural including a plurality of second signal wire layers, and
the resin layer covers the plurality of the first signal wire layers and the plurality of the second signal wire layers.
16 . The display device of claim 10 , further comprising:
an insulating layer which is on the second signal wire layer and defines a first opening corresponding to the folding area,
wherein the metal layer and the resin layer are within the first opening of the insulating layer.
17 . The display device of claim 16 , wherein the display layer includes:
a pixel circuit comprising:
a gate electrode,
a source electrode and a drain electrode which are on the gate electrode, and
a connection electrode which is on the drain electrode, and
a light-emitting element connected to the pixel circuit, the light-emitting element comprising:
a first electrode, on the connection electrode,
a partition wall defining a second opening which exposes the first electrode to outside the partition wall,
a second electrode of the light-emitting element, overlapping the first electrode, at the second opening, and
a light emitting layer between the first electrode and the second electrode, at the second opening.
18 . The display device of claim 17 , wherein
the first signal wire layer is in a same layer as the gate electrode, and
the second signal wire layer is in a same layer as the connection electrode.