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US 11,778,737 B2Granted
Wiring board and method for manufacturing wiring board
AssigneesDai Nippon Printing Co., Ltd., The University of Tokyo
InventorsNaoko Okimoto, Kenichi Ogawa, Takao Someya
Life of this patent
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Abstract
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. 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.
Claims30
A wiring board, comprising:
- a substrate having a first surface and that is stretchable, the substrate including a wiring region and a component region that is adjacent to the wiring region, and in which an electronic component having an electrode is mounted on the wiring board,
- wherein the component region of the substrate includes a component-fixing region overlapping the electronic component mounted on the wiring board when viewed along the normal direction of the first surface of the substrate and a component-surrounding region positioned around the component-fixing region;
- a wiring that is 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;
- a support substrate that includes:
- a second surface facing the first surface of the substrate;
- and a first surface positioned on an opposite side of the second surface of the support substrate, that has an elastic modulus greater than the elastic modulus of the substrate, and that supports the wiring;
- and
- a stretching control mechanism that controls extension and contraction of the substrate,
- wherein the stretching control mechanism includes a first stretching control part and second stretching control parts, the first stretching control part being positioned in the component-surrounding region and spreading to a border between the component-surrounding region and the component-fixing region, and the second stretching control parts being positioned in the wiring region of the substrate and being aligned along the first direction, and
- wherein the first stretching control part includes a first section and a second section, the second section of the first stretching control part having a higher deformability than the first section of the first stretching control part and being positioned closer to the wiring region than the first section of the first stretching control part.
7 more elements
A method for manufacturing a wiring board, the method comprising:
- applying tensile stress to a substrate so as to extend the substrate, the substrate having a first surface, and being stretchable and including a wiring region and a component region that is adjacent to the wiring region, and in which an electronic component having an electrode is mounted on the wiring board,
- wherein the component region of the substrate includes a component-fixing region overlapping the electronic component mounted on the wiring board when viewed along the normal direction of the first surface of the substrate and a component-surrounding region positioned around the component-fixing region;
- providing wiring in the wiring region, on a first surface side of the substrate, which is in an extended state;
- bonding a support substrate, on which the wiring is provided, to the first surface of the substrate;
- 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,
- wherein the wiring board is provided with a stretching control mechanism that controls extension and contraction of the substrate,
- wherein the stretching control mechanism includes a first stretching control part and second stretching control parts, the first stretching control part being positioned in the component-surrounding region and spreading to a border between the component-surrounding region and the component-fixing region, and the second stretching control parts being positioned in the wiring region of the substrate and being aligned along the first direction, and
- wherein the first stretching control part includes a first section and a second section, the second section of the first stretching control part having a higher deformability than the first section of the first stretching control part and being positioned closer to the wiring region than the first section of the first stretching control part.
6 more elements
Dependencies are inferred from the claim text.