Electronic device having a plurality of stacked coil antennas

Patent metadata

Field	Value
Publication number	US-10965157-B2
Application number	US-201916527853-A
Country	US
Kind code	B2
Filing date	Jul 31, 2019
Priority date	Jul 31, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

An electronic device is provided. The electronic device includes a housing including a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface enclosing a space between the first surface and the second surface, a display exposed at least partially through the first surface, a first conductive coil positioned inside the housing, positioned above the display when viewed from above the second surface, and having an axis substantially perpendicular to the first direction or the second direction, and a second conductive coil and a third conductive coil positioned inside the housing, positioned above the first conductive coil when viewed from above the second surface, and having an axis substantially horizontal to the first direction or the second direction.

First claim

What is claimed is:

1. An electronic device, comprising:
a housing comprising a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface enclosing a space between the first surface and the second surface;
a display exposed at least partially through the first surface;
a first conductive coil positioned inside the housing, positioned above the display when viewed from above the second surface, and having an axis substantially perpendicular to the first direction or the second direction;
a second conductive coil and a third conductive coil positioned inside the housing, positioned above the first conductive coil when viewed from above the second surface, and having an axis substantially horizontal to the first direction or the second direction;
a first wireless communication circuit positioned inside the housing, electrically connected to the first conductive coil and the second conductive coil, and in which the first conductive coil and the second conductive coil are configured to generate a first magnetic signal;
a wireless charging circuit positioned inside the housing, electrically connected to the second conductive coil, and in which the second conductive coil is configured to generate or receive a second magnetic signal;
a second wireless communication circuit positioned inside the housing, electrically connected to the third conductive coil, and in which the third conductive coil is configured to generate or receive a third magnetic signal; and
a flexible printed circuit board (FPCB) comprising:
an upper layer in which the second conductive coil and the third conductive coil are formed, and
a lower layer positioned below the upper layer in which the first conductive coil is formed,
wherein the upper layer comprises a first layer, a second layer, and a third later between the first layer and the second layer,
wherein the second conductive coil comprises a fourth conductive coil formed in the first layer and a fifth conductive coil formed in the second layer, and
wherein the third layer comprises a first via configured to connect one end of the fourth conductive coil and one end of the fifth conductive coil.

2. The electronic device of claim 1 ,
wherein the FPCB further comprises:
an intermediate layer positioned between the upper layer and the lower layer.

3. The electronic device of claim 2 , wherein one end of the first conductive coil is electrically connected to a first electrode of the first wireless communication circuit,
wherein the other end of the first conductive coil is electrically connected to one end of the second conductive coil and a first electrode of the wireless charging circuit,
wherein the other end of the second conductive coil is electrically connected to a second electrode of the first wireless communication circuit and a second electrode of the wireless charging circuit,
wherein one end of the third conductive coil is electrically connected to a first electrode of the second wireless communication circuit,
wherein the other end of the third conductive coil is electrically connected to a second electrode of the second wireless communication circuit, and
wherein the intermediate layer comprises a first via configured to connect the other end of the first conductive coil and the one end of the second conductive coil.

4. The electronic device of claim 3 , wherein the intermediate layer further comprises a second via electrically connected to the one end of the first conductive coil, and
wherein the first electrode of the first wireless communication circuit is electrically connected to the one end of the first conductive coil through the second via.

5. The electronic device of claim 2 , wherein one end of the first conductive coil is electrically connected to a first electrode of the first wireless communication circuit,
wherein the other end of the first conductive coil is electrically connected to one point of the second conductive coil and a second electrode of the wireless charging circuit,
wherein one end of the second conductive coil is electrically connected to the first electrode of the first wireless communication circuit,
wherein the other end of the second conductive coil is electrically connected to a second electrode of the first wireless communication circuit and a first electrode of the wireless charging circuit,
wherein one end of the third conductive coil is electrically connected to a first electrode of the second wireless communication circuit,
wherein the other end of the third conductive coil is electrically connected to a second electrode of the second wireless communication circuit, and
wherein the intermediate layer comprises a first via configured to connect the other end of the first conductive coil and the point of the second conductive coil.

6. The electronic device of claim 5 , wherein the intermediate layer further comprises a second via electrically connected to the one end of the first conductive coil, and
wherein the first electrode of the first wireless communication circuit is electrically connected to the one end of the first conductive coil through the second via.

7. The electronic device of claim 5 , further comprising a switch configured to connect or disconnect the first electrode of the first wireless communication circuit to the one end of the first conductive coil and to connect or disconnect the second electrode of the first wireless communication circuit to the other end of the second conductive coil.

8. The electronic device of claim 2 , wherein a shield sheet is formed in the intermediate layer.

9. The electronic device of claim 2 , further comprising:
a printed circuit board (PCB) positioned below the FPCB when viewed from above the second surface and in which the first wireless communication circuit, the wireless charging circuit, and the second wireless communication circuit are mounted; and
a structure configured to electrically connect the upper layer to the PCB,
wherein the intermediate layer comprises a first via and a second via,
wherein one end of the first conductive coil is electrically connected to a first electrode of the first wireless communication circuit through the second via and the structure,
wherein the other end of the first conductive coil is electrically connected to one end of the second conductive coil through the first via,
wherein the other end of the first conductive coil is electrically connected to a first electrode of the wireless charging circuit through the first via and the structure,
wherein the other end of the second conductive coil is electrically connected to a second electrode of the first wireless communication circuit and a second electrode of the wireless charging circuit through the structure,
wherein one end of the third conductive coil is electrically connected to a first electrode of the second wireless communication circuit through the structure, and
wherein the other end of the third conductive coil is electrically connected to a second electrode of the second wireless communication circuit through the structure.

10. The electronic device of claim 2 , further comprising:
a printed circuit board (PCB) positioned below the FPCB when viewed from above the second surface and in which the first wireless communication circuit, the wireless charging circuit, and the second wireless communication circuit are mounted; and
a structure configured to electrically connect the upper layer to the PCB,
wherein the intermediate layer comprises a first via and a second via,
wherein one end of the first conductive coil is electrically connected to a first electrode of the first w

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Sungmin
• Kim Seongyeol
• Lee Jaewoong
• Jeong Yujin

Classifications

• H02J50/70 Primary

  involving the reduction of electric, magnetic or electromagnetic leakage fields · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H02J50/40

  using two or more transmitting or receiving devices (H02J50/50 takes precedence) · CPC title

• H02J50/10 Primary

  using inductive coupling · CPC title

• H04M1/0277

  for a printed circuit board assembly · CPC title