Display device and multi-panel display device
A display device includes a plurality of signal lines disposed on an upper surface of a first substrate and electrically connected to a display unit, a plurality of link lines disposed below the first substrate, a plurality of polymer patterns disposed on a side surface of the first substrate and connecting each signal line and each link line to each other, and a plurality of side lines electrically connecting the plurality of signal lines and the plurality of link lines and disposed on the plurality of polymer patterns to overlap each polymer pattern. As such, the bezel area is narrow and the polymer pattern can suppress the migration of the metal component generated in the side line and improve the adhesive force of the side line. Further, the reliability of the display device is improved and a wiring line pattern with a narrow pitch can be formed.
1 . A display device, comprising:
a first substrate including a display area and a non-display area which encloses the display area;
a display unit disposed on an upper surface of the first substrate;
a plurality of signal lines disposed on the upper surface of the first substrate, and electrically connected to the display unit;
a plurality of link lines disposed below the first substrate;
a plurality of polymer patterns disposed on a side surface of the first substrate, directly contacting each signal line and one link line, and continuously connecting each signal line and one link line to each other; and
a plurality of side lines electrically connecting and directly contacting the plurality of signal lines and the plurality of link lines, and disposed on the plurality of polymer patterns to overlap and directly contact each polymer pattern,
wherein each polymer pattern includes a concave portion which is formed so that at least a part of a surface of the each polymer pattern which is in contact with a side line of the plurality of side lines is concavely dented,
wherein each of the plurality of side lines is divided into upper parts and lower parts based on a position where a thickness of the side line is half,
wherein the entire lower part of the side line and the upper part of at least the side line are filled on the concave portion, and the rest part of the side line protrudes on the surface of the polymer pattern,
wherein each of the plurality of signal lines includes a first pad unit at the end of the signal line,
wherein each of the plurality of link lines includes a second pad unit at the end of the link line,
wherein each polymer pattern is disposed to be in direct contact with an end of each signal line and an end of each link line,
wherein each polymer pattern is in contact with a side surface of the first substrate continuously from the end of the signal line to the end of the link line,
wherein a width of each of the plurality of polymer patterns is larger than a width of each of the plurality of side lines, and
wherein the plurality of side lines is arranged so as not to directly contact the first substrate.
2 . The display device according to claim 1 , wherein the plurality of polymer patterns includes an epoxy-based resin.
3 . The display device according to claim 1 , wherein a width of each polymer pattern is approximately 40 μm to 100 μm, and an interval between the adjacent polymer patterns is approximately 10 μm to 60 μm.
4 . The display device according to claim 1 , wherein a storage modulus of the plurality of polymer patterns is approximately 100 MPa to 500 MPa.
5 . The display device according to claim 1 , wherein the concave portion extends from one end of the polymer pattern which is in contact with the end of the each signal line to another end of the polymer pattern which is in contact with the end of the each link line.
6 . The display device according to claim 1 , wherein each of the plurality of signal lines includes a first pad unit at an end of each signal line and each of the plurality of link lines includes a second pad unit at an end of each link line, and
wherein the plurality of side lines is in direct contact with an upper surface of the plurality of signal lines and a lower surface of the plurality of link lines.
7 . The display device according to claim 1 , wherein the plurality of side lines includes a conductive material and resin.
8 . The display device according to claim 1 , wherein a width of each side line is approximately 20 μm to 80 μm, and an interval between the adjacent side lines is approximately 20 μm to 100 μm.
9 . The display device according to claim 1 , further comprising:
a protective layer covering the plurality of side lines and including a black material.
10 . The display device according to claim 9 , wherein the protective layer is formed as one layer to enclose all side surfaces of the first substrate and cover all of the plurality of side lines or is patterned so as to correspond to each of the plurality of side lines.
11 . The display device according to claim 9 , wherein each side line is formed to have a tunnel shape to connect the plurality of signal lines and the plurality of link lines between the polymer patterns and the protective layer.
12 . The display device according to claim 1 , further comprising:
a third substrate disposed below the first substrate,
wherein the plurality of link lines is disposed below the third substrate,
each polymer pattern is disposed to be in contact with the side surfaces of the first substrate and the third substrate continuously from an end of each signal line to an end of each link line, and
each side line is disposed on the polymer pattern to connect each signal line and one link line.
13 . The display device according to claim 12 , wherein the plurality of link lines is disposed on a lower surface of the third substrate.
14 . The display device according to claim 1 , wherein the plurality of link lines is disposed on a lower surface of the first substrate.
15 . A multi-panel display device, comprising:
a plurality of display devices disposed to be adjacent to each other,
a first substrate including a display area and a non-display area which encloses the display area;
a display unit disposed on an upper surface of the first substrate;
a plurality of signal lines disposed on the upper surface of the first substrate and electrically connected to the display unit;
a plurality of link lines disposed below the first substrate;
a plurality of polymer patterns disposed on a side surface of the first substrate, directly contacting each signal line and one link line, and continuously connecting each signal line and one link line to each other;
a plurality of side lines electrically connecting and directly contacting the plurality of signal lines and the plurality of link lines, and disposed on the plurality of polymer patterns to overlap and directly contact each polymer pattern; and
a protective layer covering the plurality of side lines, and including a black material,
wherein each polymer pattern includes a concave portion which is formed so that at least a part of the surface of each polymer pattern which is in contact with a side line of the plurality of side lines is concavely dented,
wherein each of the plurality of side lines is divided into upper parts and lower parts based on a position where a thickness of the side line is half,
wherein the entire lower part of the side line and the upper part of at least the side line are filled on the concave portion, and the rest part of the side line protrudes on the surface of the polymer pattern,
wherein each of the plurality of signal lines includes a first pad unit at the end of the signal line,
wherein each of the plurality of link lines includes a second pad unit at the end of the link line,
wherein each polymer pattern is disposed to be in direct contact with an end of each signal line and an end of each link line,
wherein each polymer pattern is in contact with a side surface of the first substrate continuously from the end of the signal line to the end of the link line,
wherein a width of each of the plurality of polymer patterns is larger than a width of each of the plurality of side lines, and
wherein the plurality of side lines is arranged so as not to directly contact with the first substrate.
16 . The multi-panel display device according to claim 15 , wherein each side line is formed to have a tunnel shape to connect the signal lines and the link lines between the polymer patterns and the protective layer.
17 . The multi-panel display device according to claim 15 , wherein the plurality of polymer patterns includes an epoxy-based resin, and the plurality of side lines includes a conductive material and a resin.
18 . The multi-panel display device according to claim 15 , wherein the concave portion extends from one end of the polymer pattern which is in contact with the end of the each signal line to another end of the polymer pattern which is in contact with the end of the each link line.