Stretchable mounting substrate
A stretchable mounting substrate that includes: a stretchable wiring substrate, the stretchable wiring substrate including a stretchable base material and a stretchable wiring arranged on the stretchable base material; and a module on a surface of the stretchable wiring substrate, the module including a multilayer substrate, a plurality of electronic components on a principal surface of the multilayer substrate, a plurality of first electrodes and a plurality of second electrodes, and internal wirings inside the multilayer substrate. The module has a first electrode arrangement region where the plurality of first electrodes are arranged and a second electrode arrangement region where the plurality of second electrodes are arranged, and includes a node electrode pair, and the internal wiring of the node electrode pair and the stretchable wiring on the stretchable base material intersect each other in plan view of the stretchable wiring substrate.
1. A stretchable mounting substrate comprising:
a stretchable wiring substrate, wherein the stretchable wiring substrate includes a stretchable base material and a stretchable wiring arranged on the stretchable base material; and
a module on a surface of the stretchable wiring substrate, wherein the module includes a multilayer substrate, a plurality of electronic components on a principal surface of the multilayer substrate, a plurality of first electrodes and a plurality of second electrodes on the principal surface of the multilayer substrate and electrically connected to the stretchable wiring substrate, and internal wirings inside the multilayer substrate,
wherein the module has a first electrode arrangement region where the plurality of first electrodes are arranged and a second electrode arrangement region where the plurality of second electrodes are arranged,
wherein an internal wiring of the internal wirings electrically connects a first electrode of the plurality of first electrodes and a second electrode of the plurality of second electrodes to form a node electrode pair, and
wherein the internal wiring of the node electrode pair and the stretchable wiring on the stretchable base material intersect each other in plan view of the stretchable wiring substrate.
2. The stretchable mounting substrate according to claim 1 , wherein a shortest distance between the first electrode and the second electrode of the node electrode pair is longer than a minimum line width of the stretchable wiring.
3. The stretchable mounting substrate according to claim 2 , wherein a minimum line width of the internal wiring in the module is shorter than the minimum line width of the stretchable wiring.
4. The stretchable mounting substrate according to claim 1 , wherein a shortest distance between the first electrode and the second electrode of the node electrode pair is longer than a sum of a minimum line width of the stretchable wiring and a value twice a minimum interval of the stretchable wiring.
5. The stretchable mounting substrate according to claim 4 , wherein a minimum line width of the internal wiring in the module is shorter than the minimum line width of the stretchable wiring.
6. The stretchable mounting substrate according to claim 1 , wherein a minimum line width of the internal wiring in the module is shorter than a minimum line width of the stretchable wiring.
7. The stretchable mounting substrate according to claim 1 , wherein a number of layers in the multilayer substrate of the module is larger than a number of laminated stretchable base materials of the stretchable wiring substrate.
8. The stretchable mounting substrate according to claim 1 , wherein the stretchable wiring does not intersect on the stretchable base material.
9. The stretchable mounting substrate according to claim 1 , wherein the module is a double-sided mounting module in which the plurality of electronic components are mounted on opposed surfaces of the multilayer substrate.
10. The stretchable mounting substrate according to claim 1 , wherein the first electrode arrangement region is located on a first side of the module in the plan view, and the second electrode arrangement region is located on a second side of the module opposite to the first side.
11. The stretchable mounting substrate according to claim 10 , wherein each of the first electrode and the second electrode of the node electrode pair is positioned away from the first side and the second side, respectively, of the module.
12. The stretchable mounting substrate according to claim 1 , further comprising a sealing resin sealing at least the module.
13. The stretchable mounting substrate according to claim 1 , wherein at least a part of the stretchable mounting substrate has a flat portion.