Stretchable conductive substrate
A stretchable conductive substrate includes a substrate and a circuit layer. The substrate has a plurality of predetermined areas. The circuit layer is formed on the substrate and defines a conductive contact group and at least one elastic wire structure connected to the conductive contact group in each of the predetermined areas. The at least one elastic wire structure has at least one patterned wire segment and a stretch rate thereof along a length direction of the substrate is from 0% to 60%.
1. A stretchable conductive substrate, comprising:
a substrate having a plurality of predetermined areas; and
a circuit layer formed on the substrate and defining a conductive contact group and at least one elastic wire structure connected to the conductive contact group in each of the predetermined areas, wherein the at least one elastic wire structure has at least one patterned wire segment and a stretch rate thereof along a length direction of the substrate is from 0% to 60%;
wherein the at least one patterned wire segment has a plurality of hollow pattern units that are connected to each other and linearly arranged along the length direction of the substrate; each of the hollow pattern units is in the shape of an n-sided polygon, where n is an integer greater than or equal to 3.
2. The stretchable conductive substrate according to claim 1 , further comprising an elastic conductive layer that is formed on the circuit layer.
3. The stretchable conductive substrate according to claim 2 , wherein the elastic conductive layer is formed from a conductive composition, and based on 100 wt % of the conductive composition, the conductive composition includes 45 wt % to 65 wt % of a conductive material that is selected from the group consisting of gold, palladium, platinum, nickel, copper, copper-clad silver, graphene, and carbon nanotubes.
4. The stretchable conductive substrate according to claim 2 , wherein each of the hollow pattern units includes a plurality of corner portions and a plurality of straight edge portions, and any adjacent two of the corner portions have one of the straight edge portions therebetween; the elastic conductive layer includes a plurality of elastic conductive structures, and the corner portions of each of the hollow pattern units each have one of the elastic conductive structures thereon.
5. The stretchable conductive substrate according to claim 4 , wherein an overlap rate between each of the corner portions and the corresponding one of the elastic conductive structures is from 5% to 50%.
6. The stretchable conductive substrate according to claim 2 , wherein each of the hollow pattern units includes a plurality of corner portions and a plurality of straight edge portions, and any adjacent two of the corner portions have one of the straight edge portions therebetween; the elastic conductive layer includes a plurality of elastic conductive structures, and the straight edge portions of each of the hollow pattern units each have one of the elastic conductive structures thereon.
7. The stretchable conductive substrate according to claim 6 , wherein an overlap rate between each of the straight edge portions and the corresponding one of the elastic conductive structures is from 5% to 50%.