Stretchable wiring board and device with adhesive patch for living body

A stretchable wiring board comprising:

• a stretchable substrate;
• a first stretchable wiring extending in a length direction on a main surface side of the stretchable substrate;
• and
• a second stretchable wiring extending in the length direction on the main surface side of the stretchable substrate, the second stretchable wiring having a first portion with a first region overlapping on top of the first stretchable wiring on an end portion side of the first stretchable wiring, and a width of the first portion of the second stretchable wiring in a width direction orthogonal to the length direction is smaller than a width of the first stretchable wiring,
• wherein the first portion of the second stretchable wiring exists across a second region where the first stretchable wiring and the second stretchable wiring overlap and a third region where the first stretchable wiring and the second stretchable wiring do not overlap, and
• wherein a length of the first portion in the third region where the first stretchable wiring and the second stretchable wiring do not overlap is 100 μm to 300 μm.

A stretchable wiring board comprising:

• a stretchable substrate;
• a first stretchable wiring extending in a length direction on a main surface side of the stretchable substrate;
• and
• a second stretchable wiring extending in the length direction on the main surface side of the stretchable substrate, the second stretchable wiring having a first portion with a first region overlapping on top of the first stretchable wiring on an end portion side of the first stretchable wiring, and a width of the first portion of the second stretchable wiring in a width direction orthogonal to the length direction is smaller than a width of the first stretchable wiring,
• wherein
• the second stretchable wiring includes the first portion and a second portion adjacent to the first portion in the length direction, and
• a width of the second portion of the second stretchable wiring is larger than the width of the first portion of the second stretchable wiring, and
• wherein a difference between the width of the first portion of the second stretchable wiring at a center position in the length direction in the first portion of the second stretchable wiring and the width of the second portion of the second stretchable wiring is 30 μm or more.

A stretchable wiring board comprising:

• a stretchable substrate;
• a first stretchable wiring extending in a length direction on a main surface side of the stretchable substrate;
• and
• a second stretchable wiring extending in the length direction on the main surface side of the stretchable substrate, the second stretchable wiring having a first portion with a first region overlapping on top of the first stretchable wiring on an end portion side of the first stretchable wiring, and a width of the first portion of the second stretchable wiring in a width direction orthogonal to the length direction is smaller than a width of the first stretchable wiring,
• wherein
• the second stretchable wiring includes the first portion and a second portion adjacent to the first portion in the length direction, and
• a width of the second portion of the second stretchable wiring is larger than the width of the first portion of the second stretchable wiring, and
• wherein the width of the second portion of the second stretchable wiring is the same as the width of the first stretchable wiring.

A stretchable wiring board comprising:

• a stretchable substrate;
• a first stretchable wiring extending in a length direction on a main surface side of the stretchable substrate;
• and
• a second stretchable wiring extending in the length direction on the main surface side of the stretchable substrate, the second stretchable wiring having a first portion with a first region overlapping on top of the first stretchable wiring on an end portion side of the first stretchable wiring, and a width of the first portion of the second stretchable wiring in a width direction orthogonal to the length direction is smaller than a width of the first stretchable wiring,
• wherein a difference between the width of the first portion of the second stretchable wiring at a center position in the length direction in the first portion of the second stretchable wiring and a width of the first stretchable wiring is 30 μm or more.

A stretchable wiring board comprising:

• a stretchable substrate;
• a first stretchable wiring extending in a length direction on a main surface side of the stretchable substrate;
• and
• a second stretchable wiring extending in the length direction on the main surface side of the stretchable substrate, the second stretchable wiring having a first portion with a first region overlapping on top of the first stretchable wiring on an end portion side of the first stretchable wiring, and a width of the first portion of the second stretchable wiring in a width direction orthogonal to the length direction is smaller than a width of the first stretchable wiring,
• wherein a difference between the width of the first portion of the second stretchable wiring at a center position in the length direction in the first portion of the second stretchable wiring and a width of the first stretchable wiring is half or less of the width of the first stretchable wiring.