Display device including a pad where a driving chip is mounted
A display device including a display panel including a base layer, a circuit layer disposed on the base layer, and a pad part having a plurality of pads disposed on the base layer; and a driving chip disposed on the pad part and including a plurality of chip pads. The plurality of pads include a first pad having a smaller area than a corresponding chip pad among the plurality of chip pads and a second pad electrically connected to the circuit layer.
1 . A display device comprising:
a display panel comprising a base layer having flexibility, a circuit layer disposed on the base layer and comprising a data line, a light emitting device layer disposed on the circuit layer, and a pad part comprising a plurality of pads disposed on the base layer;
a driving chip disposed on the pad part and comprising a plurality of chip pads; and
a printed circuit board connected to the display panel,
wherein a driving chip is disposed between a display area where the light emitting device layer is disposed and the printed circuit board,
the plurality of pads is arranged in at least two rows, and the rows correspond to a first direction,
the plurality of pads comprises a first pad and a second pad adjacent to the first pad, the second pad is connected to the data line,
the plurality of chip pads comprises a first chip pad corresponding to the first pad, and
the first pad has a smaller area than each of the first chip pad and the second pad.
2 . The display device of claim 1 , wherein the first pad is not electrically connected to the circuit layer.
3 . The display device of claim 1 , wherein the first pad is electrically connected to the circuit layer.
4 . The display device of claim 1 , wherein the first pad and the second pad are arranged in at least one row.
5 . The display device of claim 1 , wherein in the at least one row, the first pad is disposed at an outermost edge.
6 . The display device of claim 1 , wherein the first pad, the second pad, and the first chip pad are arranged to be inclined with respect to a second direction that perpendicularly intersects the first direction, and an inclined direction of each of the first pad, the second pad, and the first chip pad is toward a center of the display area.
7 . The display device of claim 1 , wherein an alignment area is defined in the pad part and the first pad is disposed in the alignment area.
8 . The display device of claim 7 , further comprising a plurality of the first pads and the second pads, and the first pads are disposed in the alignment area and the second pads are disposed in a periphery of the alignment area.
9 . The display device of claim 1 , wherein, in a second direction that perpendicularly intersects the first direction, a length of the first chip pad is greater than a length of the first pad.
10 . A display device comprising:
a display panel comprising a base layer having flexibility, a circuit layer disposed on the base layer and comprising a data line, a light emitting device layer disposed on the circuit layer, and a pad part comprising a plurality of pads disposed on the base layer;
a driving chip disposed on the pad part and comprising a plurality of chip pads; and
a printed circuit board connected to the display panel,
wherein a driving chip is disposed between a display area where the light emitting device layer is disposed and the printed circuit board,
the plurality of pads is arranged in at least two rows, and the rows correspond to a first direction,
the plurality of pads comprises a first pad and a second pad adjacent to the first pad, the second pad is connected to the data line,
the plurality of chip pads comprises a first chip pad corresponding to the first pad, and
in a second direction that perpendicularly intersects the first direction, a length of the first pad is a smaller than each of a length of the first chip pad and a length of the second pad.
11 . The display device of claim 10 , wherein the first pad is not electrically connected to the circuit layer.
12 . The display device of claim 10 , wherein the first pad is electrically connected to the circuit layer.
13 . The display device of claim 10 , wherein the first pad and the second pad are arranged in at least one row.
14 . The display device of claim 13 , wherein in the at least one row, the first pad is disposed at an outermost edge.
15 . The display device of claim 10 , wherein the first pad, the second pad, and the first chip pad are arranged to be inclined with respect to the second direction, and an inclined direction of each of the first pad, the second pad, and the first chip pad is toward a center of the display area.
16 . A display device comprising:
a display panel comprising a base layer having flexibility, a circuit layer disposed on the base layer and comprising a data line, a light emitting device layer disposed on the circuit layer, and a pad part comprising a plurality of pads disposed on the base layer;
a driving chip disposed on the pad part and comprising a plurality of chip pads; and
a printed circuit board connected to the display panel,
wherein a driving chip is disposed between a display area where the light emitting device layer is disposed and the printed circuit board,
the plurality of pads is arranged in at least two rows, and the rows correspond to a first direction,
the plurality of pads comprises a first pad and a second pad adjacent to the first pad, the second pad is connected to the data line,
the plurality of chip pads comprises a first chip pad corresponding to the first pad, and
a plurality of alignment areas are defined in the pad part and the first pad is disposed in each of the alignment areas.
17 . The display device of claim 16 , wherein the first pad is not electrically connected to the circuit layer.
18 . The display device of claim 16 , wherein the first pad and the second pad are arranged in at least one row.
19 . The display device of claim 18 , wherein in the at least one row, at least one alignment area among the plurality of alignment areas is disposed at an outermost edge.
20 . The display device of claim 16 , wherein the first pad, the second pad, and the first chip pad are arranged to be inclined with respect to a second direction that perpendicularly intersects the first direction, and an inclined direction of each of the first pad, the second pad, and the first chip pad is toward a center of the display area.