Display device
A display device includes: a substrate including a display area positioned on a first surface and displaying an image and a peripheral area positioned around the display area; a first pad portion disposed on a second surface of the substrate as a surface opposite to the first surface of the substrate; a plurality of through-holes disposed on the peripheral area and penetrating the substrate; a plurality of connection wires disposed on the peripheral area and connecting the display area and the first pad portion through the plurality of through-holes; and a printed circuit board including a second pad portion coupled with the first pad portion.
1. A display device comprising:
a substrate including:
a display area defined on a first surface thereof and which displays an image;
a peripheral area defined around the display area, wherein a plurality of through-holes is defined through the substrate in the peripheral area;
a first pad portion disposed on a second surface of the substrate, which is opposite to the first surface of the substrate;
a plurality of connection wires disposed on the peripheral area, wherein the plurality of connection wires connects the display area and the first pad portion through the plurality of through-holes;
a printed circuit board including a second pad portion connected to the first pad portion; and
a plurality of gate lines in the display area on the substrate,
wherein inside the through-holes, the plurality of connection wires and corresponding first pad portions are integrally formed as a single unitary and indivisible unit, and further comprising: a plurality of data lines in the display area on the substrate; and
a plurality of gate lines in the display area on the substrate and crossing the plurality of data lines, wherein the plurality of connection wires is disposed in a same layer as one of the plurality of data lines and the plurality of gate lines, wherein each of the plurality of gate lines has a dual-layer structure including a first gate member and a second gate member disposed on the first gate member, and the plurality of connection wires is disposed in a same layer as one of the first gate member and the second gate member.
2. The display device of claim 1 , wherein
the first pad portion includes a plurality of first pad terminals overlapping the plurality of through-holes.
3. The display device of claim 2 , wherein
the plurality of through-holes is linearly arranged in a first direction which is parallel to a boundary between the display area and the peripheral area where the plurality of through-holes are disposed.
4. The display device of claim 3 , wherein
the plurality of connection wires extends in a second direction crossing the first direction.
5. The display device of claim 4 , wherein
each of the plurality of connection wires is bent at least once.
6. The display device of claim 2 , wherein the plurality of through-holes includes:
a plurality of first row through-holes linearly arranged along a first row, which is parallel to a first direction which is parallel to a boundary between the display area and the peripheral area where the plurality of through-holes are disposed; and
a plurality of second row through-holes linearly arranged along a second row, which is parallel to the first row,
wherein the first row and the second row are spaced apart from each other in a second direction crossing the first direction.
7. The display device of claim 6 , wherein the plurality of first pad terminals includes:
a plurality of first connection pad terminals linearly arranged along the first row and overlapping the plurality of first row through-holes, respectively; and
a plurality of second connection pad terminals linearly arranged along the second row and overlapping the plurality of second row through-holes, respectively.
8. The display device of claim 2 , wherein the plurality of through-holes includes:
a plurality of third row through-holes linearly arranged along a third row, wherein the third row forms a first inclination angle with a first direction which is parallel to a boundary between the display area and the peripheral area where the plurality of through-holes are disposed; and
a plurality of fourth row through-holes linearly arranged along a fourth row, wherein the fourth row forms a second inclination angle with the first direction.
9. The display device of claim 8 , wherein the plurality of first pad terminals includes:
a plurality of third connection pad terminals linearly arranged along the third row and respectively overlapping the plurality of third row through-holes, respectively; and
a plurality of fourth connection pad terminals linearly arranged along the fourth row and overlapping the plurality of fourth row through-holes, respectively.
10. The display device of claim 8 , wherein
the first inclination angle and the second inclination angle are equal to each other.
11. The display device of claim 10 , wherein
the first inclination angle and the second inclination angle are in a range of about zero degree to about 90 degrees.
12. The display device of claim 2 , wherein
the second pad portion includes a plurality of second pad terminals disposed in an arrangement corresponding to an arrangement of the plurality of first pad terminals.
13. The display device of claim 12 , wherein the printed circuit board includes:
a base film on which the second pad portion is disposed in a side thereof; and
a driving chip disposed on the base film in an opposing side thereof.
14. The display device of claim 13 , wherein
the base film is flexible.
15. The display device of claim 2 , wherein
each of the plurality of first pad terminals has a quadrangular plate-like shape.
16. The display device of claim 1 , wherein
the substrate is flexible.
17. The display device of claim 1 , wherein
the first pad portion and the second pad portion face each other.