Electronic device having a wireless charger coil and an antenna element on the same plane

Patent metadata

Field	Value
Publication number	US-9246352-B2
Application number	US-201414561939-A
Country	US
Kind code	B2
Filing date	Dec 5, 2014
Priority date	Aug 8, 2011
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

A portable terminal is provided. The portable terminal includes a shielding member disposed on an external part, a first coil disposed on a surface of the shielding member that faces the external part, and a second coil disposed on the surface of the shielding member, and surrounding the first coil on a same plane.

First claim

What is claimed is:

1. n An electronic device comprising:
a shielding member disposed on an external part;
a first coil disposed on a surface of the shielding member that faces the external part; and
a second coil disposed on the surface of the shielding member, and surrounding the first coil on a same plane.

2. The electronic device of claim 1 , wherein the first coil is a secondary coil for inductive coupling with a charger and the second coil is an antenna element.

3. The electronic device of claim 1 , wherein the first coil is an antenna element and the second coil is a secondary coil for inductive coupling with a charger.

4. The electronic device of claim 1 , further comprising a battery mounting recess formed on a housing of the electronic device, wherein the external part is a battery cover detachably engaged with the housing, for opening or covering the battery mounting recess.

5. The electronic device of claim 1 , wherein a battery pack connected to the first coil is accommodated in the electronic device and the first coil is a secondary coil for inductive coupling with a charger, connected to the battery pack.

6. The electronic device of claim 1 , wherein the second coil is a Near Field Communication (NFC) antenna element.

7. The electronic device of claim 1 , further comprising a Near Field Communication (NFC) control circuit built in the electronic device, wherein one of the first and second coils is connected to a communication circuit of the electronic device through the NFC control circuit.

8. The electronic device of claim 1 , further comprising a wireless charging control circuit built in the external part or the electronic device,
wherein one of the first and second coils is connected to a battery pack of the electronic device via the wireless charging control circuit.

9. The electronic device of claim 1 , further comprising a magnetic piece disposed on the surface of the shielding member, in an area surrounded by the first coil.

10. The electronic device of claim 1 , wherein the shielding member comprises:
a first accommodation groove formed into the surface of the shielding member; and
a second accommodation groove surrounding the first accommodation groove on the surface of the shielding member, and
wherein the first coil is accommodated in the first accommodation groove and the second coil is accommodated in the second accommodation groove.

11. The electronic device of claim 10 , wherein the shielding member further comprises a protrusion portion formed of a paramagnetic material, surrounded by the first accommodation groove.

12. The electronic device of claim 10 , further comprising a magnetic piece formed of a paramagnetic material, disposed on an area surrounded by the first accommodation groove.

13. The electronic device of claim 10 , wherein the shielding member further comprises a shielding wall between the first and second accommodation grooves.

14. The electronic device of claim 10 , wherein the shielding member is formed by injection-molding a mixture of an iron powder and synthetic resin.

15. The electronic device of claim 14 , wherein the synthetic resin is one of Poly Carbonate (PC), Poly Amide (PA), Acrylonitrile-Butadiene-Styrene (ABS) copolymer, and Nylon.

16. The electronic device of claim 14 , wherein the shielding member is disposed on an inner surface of the external part and wherein the first coil and the second coil face the inner surface of the external part, respectively.

17. An electronic device comprising:
a first coil disposed on a surface of a shielding member; and
a second coil disposed on the surface of the shielding member, and surrounding the first coil on a same plane.

18. The electronic device of claim 17 , wherein the first coil is a secondary coil for inductive coupling with a charger and the second coil is an antenna element.

19. The electronic device of claim 17 , wherein the first coil is an antenna element and the second coil is a secondary coil for inductive coupling with a charger.

20. The electronic device of claim 17 , further comprising a battery mounting recess formed on a housing of the electronic device,
wherein the external part is a battery cover detachably engaged with the housing, for opening or covering the battery mounting recess.

21. The electronic device of 17 , wherein a battery pack connected to the first coil is accommodated in the electronic device and the first coil is a secondary coil for inductive coupling with a charger, connected to the battery pack.

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Park Jin-Hyoung
• Kim Ki-Hyun
• Ko Kil-Soo
• Park Se-Ho
• Park Sung-Kweon

Classifications

• H04M2250/04

  including near field communication means, e.g. RFID · CPC title

• H02J50/90

  involving detection or optimisation of position, e.g. alignment · CPC title

• H02J50/10 Primary

  using inductive coupling · CPC title

• H02J7/00

  Circuit arrangements for charging or discharging batteries or for supplying loads from batteries · CPC title

• H04M1/0262

  for a battery compartment · CPC title