# US 12,016,117 B2 · Extensible and contractible mounting board > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,016,117 B2 - Document ID: US12016117B2 - Status: Granted - Kind: B2 - Application number: 17/464,049 - Filed: 2021-09-01 - Published: 2021-12-23 - Granted: 2024-06-18 - Earliest claimed: 2019-03-25 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Takahito Tomoda - Web page: https://patentgrep.com/patent/US12016117B2 ## CPC - H05K 1/0296: {Conductive pattern lay-out details not covered by sub groups H05K1/02 - H05K1/0295 (H05K1/11 takes precedence; lay-out adapted to mounted component configuration H05K1/18)} - H05K 1/0283: {Stretchable printed circuits} - H05K 1/032: {consisting of one material} - H05K 1/0393: {Flexible materials (H05K1/038 takes precedence; specific organic compositions are classified in H05K1/0313 and subgroups)} - H05K 1/181: associated with surface mounted components - H05K 1/189: characterised by the use of flexible or folded printed circuits - H05K 3/284: {for encapsulating mounted components (H05K1/185 takes precedence)} - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract An extensible and contractible mounting board that includes an extensible and contractible substrate; an extensible and contractible wiring line on one main surface of the extensible and contractible substrate; an electronic component electrically connected to the extensible and contractible wiring line; and a resin portion in contact with the extensible and contractible wiring line and overlapping an end portion of a connection region between the extensible and contractible wiring line and the electronic component in a plan view of the extensible and contractible mounting board, the resin portion having a cutout portion that overlaps the extensible and contractible wiring line. A Young's modulus of the resin portion is higher than a Young's modulus of the extensible and contractible substrate. ## Claims ### Claim 1 An extensible and contractible mounting board comprising: an extensible and contractible substrate; an extensible and contractible wiring line on one main surface of the extensible and contractible substrate; an electronic component electrically connected to the extensible and contractible wiring line; and a resin portion in contact with the extensible and contractible wiring line on a side thereof that is opposite to the extensible and contractable substrate in a plan view of the extensible and contractable mounting board, the resin portion covering the electronic component on a side thereof that is opposite to the extensible and contractible substrate in the plan view of the extensible and contractable mounting board, and the resin portion overlapping an end portion of a connection region between the extensible and contractible wiring line and the electronic component in the plan view of the extensible and contractible mounting board, the resin portion having a cutout portion that overlaps the extensible and contractible wiring line, wherein a Young's modulus of the resin portion is higher than a Young's modulus of the extensible and contractible substrate. ### Claim 2 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein the cutout portion overlaps the extensible and contractible wiring line in the plan view. ### Claim 3 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein the cutout portion overlaps the extensible and contractible wiring line in a section view of the extensible and contractible mounting board. ### Claim 4 (depends on 3) The extensible and contractible mounting board according to claim 3, wherein the resin portion is a first resin portion and the extensible and contractable mounting board includes a second resin portion in contact with a side of the extensible and contractible wiring line proximal to the extensible and contractible substrate and is in contact with the extensible and contractible substrate. ### Claim 5 (depends on 4) The extensible and contractible mounting board according to claim 4, wherein the second resin portion is embedded in the extensible and contractible substrate. ### Claim 6 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein 0.45≤X/A<1, where X is a depth of the cutout portion and A is a length of the resin portion protruding from the end portion of the connection region between the extensible and contractible wiring line and the electronic component in a same direction as the depth of the cutout portion. ### Claim 7 (depends on 6) The extensible and contractible mounting board according to claim 6, wherein 0.2≤Y/B≤0.7, where Y is a width of the cutout portion and B is a width of the resin portion in a same direction as the width of the cutout portion. ### Claim 8 (depends on 6) The extensible and contractible mounting board according to claim 6, wherein 0.5≤C/0.5Y≤1, where a corner portion of the cutout portion proximal to the electronic component has a radius C, and Y is a width of the cutout portion. ### Claim 9 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein 0.2≤Y/B≤0.7, where Y is a width of the cutout portion and B is a width of the resin portion in a same direction as the width of the cutout portion. ### Claim 10 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein 0.5≤C/0.5Y≤1, where a corner portion of the cutout portion proximal to the electronic component has a radius C, and Y is a width of the cutout portion. ### Claim 11 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein the extensible and contractible wiring line has a first wiring line portion and a second wiring line portion, the first wiring line portion is connected to the electronic component, and the second wiring line portion overlaps the cutout portion and is wider than the first wiring line portion in the plan view. ### Claim 12 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein a constituent material of the extensible and contractible substrate is an elastomer-based resin. ### Claim 13 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein a constituent material of the resin portion is at least one of polyvinyl chloride, polyethylene, polystyrene, polycarbonate, polyvinylidene fluoride, polyimide, liquid crystal polymer, polytetrafluoroethylene, phenol resins, epoxy-based resins, urethane-based resin, acrylic-based resins, silicone-based resins, and styrene-butadiene-based resins. ### Claim 14 (depends on 1) The extensible and contractible mounting board according to claim 1, wherein the resin portion is a first resin portion and the extensible and contractable mounting board further comprises a second resin portion covering the first resin portion. ### Claim 15 (depends on 14) The extensible and contractible mounting board according to claim 14, wherein the second resin portion has a Young's modulus lower than that of the first resin portion. ### Claim 16 (depends on 1) The extensible and contractible mounting board according to claim 1, further comprising a connection portion interposed between the electronic component and the extensible and contractible wiring line, and electrically connecting the electronic component to the extensible and contractible wiring line.