# US 10,483,767 B2 · Thin film coil and electronic device having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,483,767 B2 - Document ID: US10483767B2 - Status: Granted - Kind: B2 - Application number: 14/859,885 - Filed: 2015-09-21 - Published: 2016-01-14 - Granted: 2019-11-19 - Earliest claimed: 2012-03-29 - Assignees: WITS Co., Ltd. - Applicants: WITS Co., Ltd. - Inventors: Dae Ki Lim; Tae Sung Kim; Hyeon Gil Nam; Chan Gwang An; Hyun Seok Lee; Ki Won Chang; Chang Mok Han; Sang Woo Bae; Sung Eun Cho; Jae Suk Sung - Web page: https://patentgrep.com/patent/US10483767B2 ## CPC - H01F 27/2804: {Printed windings} - H01F 5/00: Coils (superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00) - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F 38/14: Inductive couplings - H01Q 7/00: Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop - H01Q 7/06: with core of ferromagnetic material (H01Q7/02 takes precedence) - H02J 50/10: using inductive coupling - H02J 50/70: involving the reduction of electric, magnetic or electromagnetic leakage fields - H01F 17/00: Fixed inductances of the signal type - H01F 17/0006: {Printed inductances (printed coils for dynamo-electric machines H02K3/26; printed circuits H05K)} - H01F 2017/004: {with the coil helically wound around an axis without a core} - H01F 2017/0053: {with means to reduce eddy currents} - H01F 2017/0073: {with a special conductive pattern, e.g. flat spiral} - H01F 2017/0086: {on semiconductor substrate} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract There are provided a thin film coil and an electronic device having the same, the thin film coil including a substrate; and a coil pattern including a first coil strand and a second coil strand formed on both surfaces of the substrate, respectively, wherein the first coil strand formed on one surface of the substrate includes at least one gyration path that passes through the other surface of the substrate and gyrates. ## Claims ### Claim 1 A thin film coil, comprising: a substrate having a first surface and a second surface and formed of an insulating layer; a first spiral pattern including a plurality of first coil strands formed spirally on the first surface of the substrate and having at least a portion electrically connected in parallel; a second spiral pattern including a plurality of second coil strands formed spirally on the second surface of the substrate and having at least a portion electrically connected in parallel, and electrically connected to the first spiral pattern; a first contact pad electrically connected to all ends disposed outwardly of the plurality of first coil strands; a second contact pad electrically connected to all ends disposed inwardly of the plurality of first coil strands; a lead out pattern formed on the first surface of the substrate, and leading out of the first spiral pattern from an end disposed on an inner side of the first spiral pattern; and a plurality of gyration vias passing through the substrate in a position adjacent to the lead out pattern, and connecting the first spiral pattern and the second spiral pattern. ### Claim 2 (depends on 1) The thin film coil of claim 1, wherein the first spiral pattern is disconnected and is connected to the second spiral pattern through the plurality of gyration vias in the position adjacent to the lead out pattern. ### Claim 3 (depends on 2) The thin film coil of claim 2, wherein the first spiral pattern and the second spiral pattern are connected to each other in parallel. ### Claim 4 (depends on 1) The thin film coil of claim 1, wherein at least a portion of the lead out pattern has a shape in which a plurality of strands are connected in parallel. ### Claim 5 (depends on 1) The thin film coil of claim 1, further comprising a conductive connection via disposed on an end disposed on an inner side of the second spiral pattern, wherein an end disposed on an inner side of the first spiral pattern and an end disposed on an inner side of the second spiral pattern are electrically connected by the conductive connection via. ### Claim 6 (depends on 1) The thin film coil of claim 1, wherein the first contact pad and the second contact pad are disposed outwardly of the first spiral pattern. ### Claim 7 A wireless power receiving apparatus wirelessly receiving power transmitted by wireless power transmission apparatus to store the power in a battery, the wireless power receiving apparatus comprising: a substrate having a first surface and a second surface and formed of an insulating layer; a first spiral pattern including a plurality of first coil strands formed spirally on the first surface of the substrate and having at least a portion electrically connected in parallel; a second spiral pattern including a plurality of second coil strands formed spirally on the second surface of the substrate and having at least a portion electrically connected in parallel, and electrically connected to the first spiral pattern; a first contact pad electrically connected to all ends disposed outwardly of the plurality of first coil strands; a second contact pad electrically connected to all ends disposed inwardly of the plurality of first coil strands; a lead out pattern formed on the first surface of the substrate, and leading out of the first spiral pattern from an end disposed on an inner side of the first spiral pattern; and a plurality of gyration vias passing through the substrate in a position adjacent to the lead out pattern, and connecting the first spiral pattern and the second spiral pattern. ### Claim 8 (depends on 7) The wireless power receiving apparatus of claim 7, wherein at least a portion of the lead out pattern has a shape in which a plurality of strands are connected in parallel. ### Claim 9 An electronic device comprising: a wireless power receiving apparatus; a battery storing power received by the wireless power receiving apparatus; and a case to accommodate the wireless power receiving apparatus and the battery therein, wherein the wireless power receiving apparatus comprises: a substrate having a first surface and a second surface and formed of an insulating layer; a first spiral pattern including a plurality of first coil strands formed spirally on the first surface of the substrate and having at least a portion electrically connected in parallel; a second spiral pattern including a plurality of second coil strands formed spirally on the second surface of the substrate and having at least a portion electrically connected in parallel, and electrically connected to the first spiral pattern; a first contact pad electrically connected to all ends disposed outwardly of the plurality of first coil strands; a second contact pad electrically connected to all ends disposed inwardly of the plurality of first coil strands; a lead out pattern formed on the first surface of the substrate, and leading out of the first spiral pattern from an end disposed on an inner side of the first spiral pattern; and a plurality of gyration vias passing through the substrate in a position adjacent to the lead out pattern, and connecting the first spiral pattern and the second spiral pattern. ### Claim 10 (depends on 9) The electronic device of claim 9, wherein at least a portion of the lead out pattern has a shape in which a plurality of strands are connected in parallel. ### Claim 11 A case assembly of a portable device wirelessly receiving power, the case assembly comprising: a thin film coil; and a case of the portable device disposed on the other side of the thin film coil, wherein the thin film coil comprises: a substrate having a first surface and a second surface and formed of an insulating layer; a first spiral pattern including a plurality of first coil strands formed spirally on the first surface of the substrate and having at least a portion electrically connected in parallel; a second spiral pattern including a plurality of second coil strands formed spirally on the second surface of the substrate and having at least a portion electrically connected in parallel, and electrically connected to the first spiral pattern; a first contact pad electrically connected to all ends disposed outwardly of the plurality of first coil strands; and a second contact pad electrically connected to all ends disposed inwardly of the plurality of first coil strands, a lead out pattern formed on the first surface of the substrate, and leading out of the first spiral pattern from an end disposed on an inner side of the first spiral pattern; and a plurality of gyration vias passing through the substrate in a position adjacent to the lead out pattern, and connecting the first spiral pattern and the second spiral pattern. ### Claim 12 (depends on 11) The case assembly of claim 11, wherein at least a portion of the lead out pattern has a shape in which a plurality of strands are connected in parallel.