Portable terminal having a wireless charger coil and antenna element

• US 10,243,402 B2
• Filed: 03/29/2018
• Issued: 03/26/2019
• Est. Priority Date: 08/08/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Park, Jin-Hyoung, Kim, Ki-Hyun, Ko, Kil-Soo, Park, Se-Ho, Park, Sung-Kweon
• Primary Examiner(s): Tso, Edward
• Application Number:
  US15/940,616
• Publication Number:
  US 20180219417A1
• Time in Patent Office: 362 Days
• Field of Search: 320107, 320108, 320114, 320115, 307104, D13107, D13108
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04M 1/0262 for a battery compartment
• CPC Class Codes: H04M 2250/04 including near field communication means, e.g. RFID
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A portable terminal is provided. The portable terminal includes a shielding member attached to an inner surface of an external part, a shielding wall formed on the shielding member, a first coil attached to a surface of the shielding member that faces the inner surface of the external part, and a second coil attached to the surface of the shielding member, with the second coil surrounds the first coil on a same plane and the shielding wall being disposed between the first and second coil.

Claims

1. An electronic device comprising:

a battery;

a circuit board;

a first coil, provided at an inside of the electronic device, for generating power based on an energy field provided from a wireless power transmitting device;

a second coil, provided at the inside of the electronic device, for use in performing near field communication (NFC);

circuitry comprising a first circuit and a second circuit, wherein the first circuit is configured to control charging of the battery using the power generated at the first coil, and the second circuit is configured to control performing of the NFC through the second coil, wherein the circuitry is located at the circuit board;

a magnetic shield disposed between the circuitry and at least one of the first coil or the second coil; and

first coil connection ends and second coil connection ends provided at the inside of the electronic device and respectively connected to the first coil and the second coil,

wherein the first coil connection ends and the second coil connection ends are respectively connected to the first circuit and the second circuit via a plurality of terminals.

2. The electronic device of claim 1,

wherein the first coil is a secondary coil for inductive coupling the wireless power transmitting device.

3. The electronic device of claim 1, wherein the first circuit includes a wireless charging control circuit, and

wherein the first coil is connected to the battery via the wireless charging control circuit.

4. The electronic device of claim 1, further comprising a magnetic piece attached to a surface of the magnetic shield, in an area surrounded by the first coil.

5. The electronic device of claim 1, further comprising:

a first groove formed in a surface of the magnetic shield; and

a second groove surrounding the first groove on the surface of the magnetic shield,

wherein the first coil is disposed in the first groove and the second coil is disposed in the second groove.

6. The electronic device of claim 5, wherein the magnetic shield further comprises a protrusion portion including a paramagnetic material, surrounded by the first groove.

7. The electronic device of claim 5, further comprising a magnetic piece including a paramagnetic material, attached to an area surrounded by the first groove.

8. The electronic device of claim 5, wherein the magnetic shield comprises an injection-molded mixture comprising iron powder and a synthetic resin.

9. The electronic device of claim 8, wherein the synthetic resin is one of Poly Carbonate (PC), Poly Amide (PA), Acrylonitrile-Butadiene-Styrene (ABS) copolymer, and Nylon.

10. The electronic device of claim 1, further comprising a touch screen display.

11. The electronic device of claim 1, wherein the first coil and the second coil are adjacent.

12. The electronic device of claim 11, wherein the first coil and the second coil are on a same plane.

13. The electronic device of claim 12, wherein the first coil and the second coil are concentric.

14. An electronic device comprising:

a battery;

a circuit board;

a first coil, provided at an inside of the electronic device, for generating power based on an energy field provided from a wireless power transmitting device;

a second coil, provided at the inside of the electronic device, for use in performing near field communication (NFC);

circuitry comprising a first circuit and a second circuit, wherein the first circuit is configured to control charging of the battery using the power generated at the first coil, and the second circuit is configured to control performing of the NFC through the second coil, wherein the circuitry is located at the circuit board;

a magnetic shield disposed between the circuitry and at least one of the first coil or the second coil;

a first groove formed in a surface of the magnetic shield;

a second groove surrounding the first groove on the surface of the magnetic shield; and

first coil connection ends and second coil connection ends provided at the inside of the housing and respectively connected to the first coil and the second coil,

wherein the first coil connection ends and the second coil connection ends are respectively connected to the first circuit and the second circuit via a plurality of terminals, and

wherein the first coil is disposed in the first groove and the second coil is disposed in the second groove and the first coil and the second coil are on a same plane.

15. The electronic device of claim 14,

wherein the first coil is a secondary coil for inductive coupling the wireless power transmitting device.

16. The electronic device of claim 14, wherein the magnetic shield further comprises a protrusion portion including a paramagnetic material, surrounded by the first groove.

17. The electronic device of claim 14, wherein the magnetic shield comprises an injection-molded mixture comprising iron powder and a synthetic resin.