# US 2021/0281113 A1 · Coil module > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0281113 A1 - Document ID: US20210281113A1 - Status: Published application - Kind: A1 - Application number: 17/326,861 - Filed: 2021-05-21 - Published: 2021-09-09 - Earliest claimed: 2017-09-15 - Assignees: TDK Taiwan Corp. - Applicants: TDK Taiwan Corp. - Inventors: Feng-Lung CHIEN; Hsiang-Hui HSU; Chien-Hung LIN - Web page: https://patentgrep.com/patent/US20210281113A1 ## CPC - H02J 50/12: of the resonant type - H01F 3/10: Composite arrangements of magnetic circuits - H01F 38/14: Inductive couplings - H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices} - H02J 50/10: using inductive coupling - H04B 5/263: {Multiple coils at either side} - H04B 5/79: for data transfer in combination with power transfer - H01F 27/2871: {Pancake coils} - H01F 2003/106: {Magnetic circuits using combinations of different magnetic materials} - H01F 2038/143: {for signals} - H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H04B: TRANSMISSION ## Abstract A wireless device is provided and includes a substrate, a first coil and a second coil. The first coil is configured to be wound around a first axis, and the first coil is disposed on the substrate and is configured to operate in a wireless charging mode. The second coil is disposed on the substrate and configured to operate in a wireless communication mode. The wires of the second coil partially overlap the wires of the first coil. ## Claims ### Claim 1 A coil module, comprising: a substrate, including a first magnetic conductive element, wherein the first magnetic conductive element has a first surface and a second surface parallel to each other, and the first surface and the second surface face a same direction, wherein the first surface and the second surface have a distance greater than zero in a direction perpendicular to the first surface; a first coil, disposed on the substrate, wherein when viewed in the direction perpendicular to the first surface, the first coil overlaps at least a portion of the first surface; and a second coil, disposed on the substrate, wherein when viewed in the direction perpendicular to the first surface, the second coil overlaps at least a portion of the second surface; wherein the first coil is electrically independent from the second coil. ### Claim 2 (depends on 1) The coil module as claimed in claim 1, wherein the first magnetic conductive element is integrally formed in one piece. ### Claim 3 (depends on 2) The coil module as claimed in claim 2, wherein when viewed in a direction parallel to the first surface, the first coil overlaps at least a portion of the first magnetic conductive element. ### Claim 4 (depends on 3) The coil module as claimed in claim 3, wherein when viewed in the direction parallel to the first surface, the first coil overlaps at least a portion of the second coil. ### Claim 5 (depends on 2) The coil module as claimed in claim 2, wherein the first coil includes a first line segment having a long strip-shaped structure, the second coil includes a second line segment having a strip-shaped structure, and a cross-sectional area of the first line ### Claim 6 (depends on 5) The coil module as claimed in claim 5, wherein the first magnetic conductive element further includes a recess for accommodating the first coil. ### Claim 7 (depends on 6) The coil module as claimed in claim 6, wherein the cross-sectional area of the first line segment is greater than the cross-sectional area of the second line segment. ### Claim 8 (depends on 6) The coil module as claimed in claim 6, wherein the substrate further includes a second magnetic conductive element, and when viewed in a direction perpendicular to the second surface, the second magnetic conductive element overlaps at least a portion of the second surface. ### Claim 9 (depends on 8) The coil module as claimed in claim 8, wherein when viewed in the direction perpendicular to the second surface, the second magnetic conductive element overlaps at least a portion of the second coil. ### Claim 10 (depends on 9) The coil module as claimed in claim 9, wherein when viewed in the direction perpendicular to the first surface, the second magnetic conductive element does not overlap the first surface. ### Claim 11 A coil module, comprising: a substrate, including a first magnetic conductive element, wherein the first magnetic conductive element has a first surface and a second surface parallel to each other, wherein the first surface and the second surface have a distance greater than zero in a direction perpendicular to the first surface; a first coil, disposed on the substrate, wherein when viewed in the direction perpendicular to the first surface, the first coil overlaps at least a portion of the first surface; a second coil, disposed on the substrate, wherein when viewed in the direction perpendicular to the first surface, the second coil overlaps at least a a third coil, disposed on the first coil, wherein when viewed in the direction perpendicular to the first surface, the third coil overlaps at least a portion of the first surface; wherein the first coil is electrically independent from the second coil. ### Claim 12 (depends on 11) The coil module as claimed in claim 11, wherein the first magnetic conductive element is integrally formed in one piece. ### Claim 13 (depends on 12) The coil module as claimed in claim 12, wherein when viewed in a direction parallel to the first surface, the first coil overlaps at least a portion of the first magnetic conductive element. ### Claim 14 (depends on 13) The coil module as claimed in claim 13, wherein when viewed in the direction parallel to the first surface, the first coil overlaps at least a portion of the second coil. ### Claim 15 (depends on 12) The coil module as claimed in claim 12, wherein the first coil includes a first line segment having a long strip-shaped structure, the second coil includes a second line segment having a strip-shaped structure, and a cross-sectional area of the first line segment is different from a cross-sectional area of the second line segment. ### Claim 16 (depends on 15) The coil module as claimed in claim 15, wherein the first magnetic conductive element further includes a recess for accommodating the first coil. ### Claim 17 (depends on 16) The coil module as claimed in claim 16, wherein the cross-sectional area of the first line segment is greater than the cross-sectional area of the second line segment. ### Claim 18 (depends on 16) The coil module as claimed in claim 16, wherein the substrate further includes a second magnetic conductive element, and when viewed in a direction perpendicular to the second surface, the second magnetic conductive element overlaps ### Claim 19 (depends on 18) The coil module as claimed in claim 18, wherein when viewed in the direction perpendicular to the second surface, the second magnetic conductive element overlaps at least a portion of the second coil. ### Claim 20 (depends on 19) The coil module as claimed in claim 19, wherein when viewed in the direction perpendicular to the first surface, the second magnetic conductive element does not overlap the first surface.