Display device including signal lines not overlapping a base layer in a connection part and manufacturing method of the same
A display device includes a first base layer defining a display area in which pixels are arranged, a second base layer at least partially under the first base layer, a first connection signal line partially on the first base layer, and a second connection signal line partially under the second base layer. The first connection signal line includes a (1-1)st part overlapping the first base layer in a plan view and a (1-2)st part that does not overlap the first base layer in the plan view. The second connection signal line includes a (2-1)st part overlapping the second base layer in the plan view and a (2-2)st part that does not overlap the second base layer in the plan view. At least a portion of the (2-2)st part overlaps the (1-2)st part in the plan view, and the (1-2)st part and the (2-2)st part are electrically connected.
1 . A display device comprising:
a first base layer defining a display area in which pixels are arranged;
a second base layer at least partially under the first base layer;
a first connection signal line partially on the first base layer and extending in a first direction; and
a second connection signal line partially under the second base layer and extending in the first direction,
wherein the first connection signal line comprises:
a (1-1)th part that overlaps the first base layer in a plan view; and
a (1-2)th part that does not overlap the first base layer in the plan view,
wherein the second connection signal line comprises:
a (2-1)th part that overlaps the second base layer in the plan view; and
a (2-2)th part that does not overlap the second base layer in the plan view,
wherein at least a portion of the (2-2)th part overlaps the (1-2)th part in the plan view, and
wherein the (1-2)th part and the (2-2)th part are electrically connected.
2 . The display device of claim 1 , further comprising an organic cover layer covering at least a portion of each of the first connection signal line and the second connection signal line.
3 . The display device of claim 2 , wherein the organic cover layer comprises:
a first organic cover layer covering the first connection signal line; and
a second organic cover layer covering at least the (2-2)th part of the second connection signal line.
4 . The display device of claim 3 , wherein the first organic cover layer and the second organic cover layer are spaced apart from each other.
5 . The display device of claim 3 , wherein the first organic cover layer is on at least a portion of the display area.
6 . The display device of claim 5 , wherein an upper surface of the first organic cover layer is a flat surface parallel to the upper surface of the first base layer.
7 . The display device of claim 3 , wherein an end of the first connection signal line, an end of the second connection signal line, an end of the first organic cover layer, and an end of the second organic cover layer are aligned with each other in the first direction.
8 . The display device of claim 3 , wherein an upper surface of the first connection signal line is in contact with the first organic cover layer, and
wherein a lower surface of the second connection signal line is in contact with the second organic cover layer.
9 . The display device of claim 1 , further comprising a conductive adhesive layer between the (1-2)th part and the (2-2)th part.
10 . The display device of claim 1 , further comprising:
a circuit element layer on the first base layer and comprising at least one transistor;
a light emitting element layer on the circuit element layer and comprising a light emitting element overlapping the display area;
a thin film encapsulation layer on the light emitting element layer and covering the light emitting element; and
an input sensor on the thin film encapsulation layer.
11 . The display device of claim 1 , further comprising:
a first additional base layer on the first base layer;
a first intermediate layer between the first base layer and the first additional base layer;
a second additional base layer under the second base layer; and
a second intermediate layer between the second base layer and the second additional base layer,
wherein the first additional base layer overlaps the (1-2)th part in the plan view, and the second additional base layer overlaps the (2-2)th part in the plan view, and
wherein a portion of the first intermediate layer is in contact with a portion of the second intermediate layer.
12 . The display device of claim 11 , wherein a first contact hole is defined in a portion of the first additional base layer overlapping the (1-2)th part in the plan view,
wherein a second contact hole is defined in a portion of the second additional base layer overlapping the (2-2)th part in the plan view,
wherein the first connection signal line is connected to the first intermediate layer through the first contact hole, and
wherein the second connection signal line is connected to the second intermediate layer through the second contact hole.
13 . A display device divided into a display part in which pixels are arranged, a circuit part under the display part, and a connection part adjacent to each of the display part and the circuit part in a first direction, the display device comprising:
a first base layer defining a display area in which the pixels are arranged and in the display part;
a second base layer in the circuit part;
a first connection signal line partially on the first base layer, the first connection signal line comprising a (1-1)th part in the display part and a (1-2)th part in the connection part and not overlapping the first base layer; and
a second connection signal line partially under the second base layer and comprising a (2-1)th part in the circuit part, and a (2-2)th part in the connection part and not overlapping the second base layer,
wherein at least a portion of the (2-2)th part overlaps the (1-2)th part in a plan view.
14 . The display device of claim 13 , further comprising an organic cover layer in at least a portion of the display part, the connection part, and the circuit part and covering at least a portion of each of the first connection signal line and the second connection signal line.