Wiring board and method for manufacturing wiring board

A wiring board, comprising:

• a substrate that is stretchable and that at least has a wiring region;
• wiring at least positioned in the wiring region on a first surface side of the substrate, the wiring having a meandering shape section that includes peaks and valleys aligned along a first direction that is one of planar directions of the first surface of the substrate;
• and
• a stretching control mechanism that controls extension and contraction of the substrate, wherein
• the stretching control mechanism at least includes stretching control parts that are positioned in the wiring region of the substrate and that are aligned along the first direction,
• the periodicity of peaks and valleys on a second surface of the substrate positioned on the opposite side of the first surface is greater than the periodicity of peaks and valleys on the first surface of the substrate,
• the peaks and the valleys on the second surface appear in a section overlapping the meandering shape section, and
• the peaks and the valleys on the first surface appear in a section overlapping the meandering shape section.

A wiring board, comprising:

• a substrate that is stretchable and that at least has a wiring region;
• wiring at least positioned in the wiring region on a first surface side of the substrate, the wiring having a meandering shape section that includes peaks and valleys aligned along a first direction that is one of planar directions of the first surface of the substrate;
• and
• a stretching control mechanism that controls extension and contraction of the substrate, wherein
• the stretching control mechanism at least includes stretching control parts that are positioned in the wiring region of the substrate and that are aligned along the first direction,
• when the periodicity of peaks and valleys on the first surface of the substrate is Fl, the positions of peaks and valleys on a second surface of the substrate positioned on the opposite side of the first surface are displaced from the positions of the peaks and the valleys on the first surface of the substrate,
• the peaks and the valleys on the second surface appear in a section overlapping the meandering shape section, and
• the peaks and the valleys on the first surface appear in a section overlapping the meandering shape section.

A method for manufacturing a wiring board, the method comprising:

• applying tensile stress to a substrate so as to extend the substrate, the substrate being stretchable and at least having a wiring region;
• providing wiring in the wiring region, on a first surface side of the substrate which is in the extended state;
• and
• removing the tensile stress from the substrate, wherein
• after the tensile stress has been removed from the substrate, the wiring has a meandering shape section that includes pluralities of peaks and valleys aligned along a first direction that is one of planar directions of the first surface of the substrate,
• the wiring board is provided with a stretching control mechanism that controls extension and contraction of the substrate, and
• the stretching control mechanism at least includes stretching control parts that are positioned in the wiring region of the substrate and that are aligned along the first direction, wherein
• the amplitude of peaks and valleys on a second surface of the substrate positioned on the opposite side of the first surface is smaller than the amplitude of peaks and valleys on the first surface of the substrate,
• the peaks and the valleys on the second surface appear in a section overlapping the meandering shape section, and
• the peaks and the valleys on the first surface appear in a section overlapping the meandering shape section.