Display panel and display device
View Patent ↗Embodiments of the present disclosure are directed to a display panel and a display device. The first fan-out wire in a first area is designed as a first portion of the first metallic layer and a second portion of a second metallic layer. The first portion of the first metallic layer is coupled to the second portion of the second metallic layer. The width of the first fan-out wire in the first area is less than the width of the fan-out wires in other areas. The distance between the first fan-out wires in the first area is less than the distance between the first fan-out wires in the other areas. While the impedance of the first fan-out wire is not increased or even reduced, the space occupied by the first fan-out wire is reduced.
1. A display panel, comprising:
a display area; and
a fan-out region, arranged at a side of the display area, the fan-out region comprising a fan-out wire coupled to a bonding terminal and the bonding terminal arranged in the fan-out region;
wherein the display panel comprises a first metallic layer and a second metallic layer; an impedance of the first metallic layer is greater than the impedance of the second metallic layer; the fan-out wire comprises a first fan-out wire and a second fan-out wire; in a first area, portions of the first fan-out wire comprises a first portion and a second portion a width of one or more of the first fan-out wires arranged at the first area is less than a width of the first fan-out wire arranged at other areas; and a distance between the first fan-out wires in the first area is less than the distance between the first fan-out wires in the other areas;
wherein the first portion comprises one or more first coupling section and second coupling section; a terminal of the first coupling section is coupled to the routing of the display area; a terminal of the second coupling section is coupled to the bonding terminal; one or more of the first coupling section and the second coupling section are coupled to the second portion.
2. The display panel according to claim 1 , wherein another terminal of the first coupling section is coupled to a terminal of the second portion; another terminal of the second coupling section is coupled to another terminal of the second portion.
3. The display panel according to claim 1 , wherein the first portion further comprises a third coupling section; two terminals of the third coupling section are coupled to the first coupling section and the second coupling section, respectively; the third coupling section and the second portion are arranged in parallel.
4. The display panel according to claim 3 , wherein the length of the third coupling section is greater than or equal to the length of the second coupling section.
5. The display panel according to claim 1 , wherein the first fan-out wire comprises a first sub-routing and a second sub-routing; the first sub-routing is disposed adjacent to the second sub-routing; the first sub-routing comprises a first portion and a second portion; the second sub-routing comprises a first portion and a second portion; a projection of one or more of the first portions of the first sub-routing overlaps a projection of one or more of the second portion in the second sub-routing; and/or the projection of one or more of the second portions of the first sub-routing overlaps the projection of one or more of the first portions of the second portion in the second sub-routing.
6. The display panel according to claim 5 , wherein the first portion of the first sub-routing comprises a fourth coupling section and a fifth coupling section; one terminal of the second portion of the first sub-routing is coupled to the fourth coupling section; another terminal of the second portion of the first sub-routing is coupled to the fifth coupling section;
the first portion of the second sub-routing comprises a sixth coupling section and a seventh coupling section; one terminal of the second portion of the second sub-routing is coupled to the sixth coupling section; another terminal of the second portion of the second sub-routing is coupled to the seventh coupling section;
the fourth coupling section overlaps the second portion of the second sub-routing partially; the seventh coupling section overlaps the second portion of the first sub-routing partially.
7. The display panel according to claim 1 , wherein a second area where the first fan-out wire and the second fan-out wire overlap; the width of each of the first fan-out wires is equal and the width of the second fan-out wires is equal; the width of the first fan-out wire is greater than the width of the second fan-out wire.
8. The display panel according to claim 7 , wherein the width of the first fan-out wire in the first area is less than the width of the first fan-out wire in the second area.
9. The display panel according to claim 1 , wherein the second area is an area where the first fan-out wire and the second fan-out wire overlap; the width of one or more of the first fan-out wires gradually increases in a direction from a middle area toward two sides of the fan-out region.
10. The display panel according to claim 9 , wherein the width of the first fan-out wire in the first area is less than the width of the first fan-out wire in the second area and is closest to the width of the first fan-out wire of the first area.
11. The display panel according to claim 9 , wherein the width of the first fan-out wire in the first area is greater than or equal to the width of the first fan-out wire in the second area and is closest to the width of the first fan-out wire of the first area; the distance between the first fan-out wires of the first area is less than the distance between the first fan-out wires in the other areas.
12. The display panel according to claim 9 , wherein the distance between one or more of the first sub-routings gradually increases in the direction of the middle area of the first sub-routing toward two sides of the fan-out region.
13. The display panel according to claim 12 , wherein the distance between the first fan-out wires in the first area is less than the minimum distance between the first fan-out wires in the second area.
14. The display panel according to claim 9 , wherein the distance between the first fan-out wires in the first area is greater than or equal to the distance between the first fan-out wires in the other areas.
15. A display device comprising:
a driving chip;
a display panel, comprising:
a display area; and
a fan-out region, arranged at a side of the display area, the fan-out region comprising a fan-out wire coupled to a bonding terminal and the bonding terminal arranged in the fan-out region;
wherein the display panel comprises a first metallic layer and a second metallic layer; an impedance of the first metallic layer is greater than the impedance of the second metallic layer; the fan-out wire comprises a first fan-out wire and a second fan-out in a first area, portions of the first fan-out wire comprises a first portion and a second portion a width of one or more of the first fan-out wires arranged at the first area is less than a width of the first fan-out wire arranged at other areas; and a distance between the first fan-out wires in the first area is less than the distance between the first fan-out wires in the other areas;
wherein the first portion comprises one or more first coupling section and second coupling section; a terminal of the first coupling section is coupled to the routing of the display area; a terminal of the second coupling section is coupled to the bonding terminal; one or more of the first coupling section and the second coupling section are coupled to the second portion.
16. The display device according to claim 15 , wherein another terminal of the first coupling section is coupled to a terminal of the second portion; another terminal of the second coupling section is coupled to another terminal of the second portion.
17. The display device according to claim 15 , wherein the first portion further comprises a third coupling section; two terminals of the third coupling section are coupled to the first coupling section and the second coupling section, respectively; the third coupling section and the second portion are arranged in parallel.
18. The display device according to claim 17 , wherein a length of the third coupling section is greater than or equal to the length of the second coupling section.