Portable terminal having a wireless charger coil and an antenna element on the same plane

• US 9,985,478 B2
• Filed: 01/22/2016
• Issued: 05/29/2018
• 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:
  US15/004,287
• Publication Number:
  US 20160142110A1
• Time in Patent Office: 858 Days
• Field of Search: 320107, 320108, 320114, 320115, 307104
• 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 body including an inner space;

a cover configured for detachable attachment to the body;

a first coil, provided on an inner surface side of the cover, for generating power based on an energy field provided from a wireless power transmitting device;

a second coil, provided on the inner surface side of the cover, 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 a battery of the electronic device using the power generated at the first coil, and the second circuit is configured to control performing of the near field communication using the second coil, wherein the circuitry is provided in the inner space of the body;

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

first coil connection ends and second coil connection ends provided on the inner surface side of the cover and respectively connected to the first coil and the second coil;

first connection terminals connected to the first circuit of the circuitry and exposed at a back surface of the body; and

second connection terminals connected to the second circuit of the circuitry and exposed at the back surface of the body,

wherein the first coil connection ends and the second coil connection ends respectively contact the first connection terminals and the second connection terminals when the cover is attached to the body of the electronic device.

2. The electronic device of claim 1,

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

wherein the second coil is an antenna element.

3. The electronic device of claim 1, further comprising

a battery mounting recess formed on the back surface of the body of the electronic device;

and

wherein the cover is configured to cover the battery mounting recess when the cover is attached to the body, and

wherein the first coil and the second coil are attached to an inner surface of the cover by the shield.

4. The electronic device of claim 1, wherein the second circuit includes an NFC control circuit.

5. 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.

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

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

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

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

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

8. The electronic device of claim 7, wherein the shield further comprises a protrusion portion including a paramagnetic material, surrounded by the first groove.

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

10. The electronic device of claim 7, wherein the shield comprises an injection-molded mixture comprising iron powder and a synthetic resin.

11. The electronic device of claim 10, wherein the synthetic resin is one of Poly Carbonate (PC), Poly Amide (PA), Acrylonitrile-Butadiene-Styrene (ABS) copolymer, and Nylon.

12. The electronic device of claim 1, further comprising a touch screen display, wherein the touch screen display is provided at a front surface of the body.

13. The electronic device of claim 12, wherein the first coil and the second coil are positioned between the touch screen display and the cover.

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

15. The electronic device of claim 14, wherein the first coil and the second coil are on a same plane.

16. The electronic device of claim 15, wherein the first coil and the second coil are concentric.