Electronic device including coil for wireless power transmission

Patent metadata

Field	Value
Publication number	US-12476489-B2
Application number	US-202217733607-A
Country	US
Kind code	B2
Filing date	Apr 29, 2022
Priority date	Nov 1, 2019
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

An electronic device is provided. The electronic device includes a substrate comprising a touch sensing circuit, which includes a first layer, a second layer overlapping with the first layer, a plurality of first electrode lines arranged on the first layer in a first direction, and a plurality of second electrode lines arranged on the second layer in a second direction that is vertical with respect to the first direction, a coil arranged to at least partially overlap with the substrate, a power transmission circuit for wirelessly transmitting power through the coil, a ground electrically connected to the power transmission circuit, and a control circuit electrically connected to the coil and the ground, wherein the control circuit can be configured to selectively connect the coil to the power transmission circuit or the ground.

First claim

What is claimed is:

1 . An electronic device comprising:
a substrate including:
a first layer and a second layer overlapping with the first layer; and
a touch sensing circuit including a plurality of first electrode lines arranged on the first layer in a first direction, and a plurality of second electrode lines arranged on the second layer in a second direction perpendicular to the first direction;
a coil disposed to overlap at least in part with the substrate; a power transmission circuit for wirelessly transmitting power through the coil; a ground electrically connected to the power transmission circuit; and a control circuit electrically connected to the coil and the ground, wherein the control circuit is configured to selectively connect the coil to the power transmission circuit or the ground.

2 . The electronic device of claim 1 , wherein the control circuit provides:
a first state in which the coil is not electrically connected to the ground and is electrically connected to the power transmission circuit; or a second state in which the coil is electrically connected to the ground and is not electrically connected to the power transmission circuit.

3 . The electronic device of claim 2 ,
wherein the control circuit includes a switch having a first terminal, a second terminal, and a third terminal, wherein the first terminal is electrically connected to the coil, wherein the second terminal is electrically connected to the ground, wherein the third terminal is electrically connected to the power transmission circuit, and wherein the switch electrically connects the first terminal to the third terminal in the first state, and electrically connects the first terminal to the second terminal in the second state.

4 . The electronic device of claim 2 , further comprising:
a user interface, wherein the control circuit selectively provides the first state or the second state, based at least in part on a user input received through the user interface.

5 . The electronic device of claim 2 , wherein the control circuit selectively provides the first state or the second state, based at least in part on whether an external electronic device is in proximity to the coil.

6 . The electronic device of claim 1 , further comprising:
a conductive plate disposed to overlap at least in part with the substrate, wherein the coil is bonded to the conductive plate through a non-conductive bonding material between the substrate and the conductive plate, and is electrically isolated from the conductive plate.

7 . The electronic device of claim 6 , wherein the conductive plate is electrically connected to the ground.

8 . The electronic device of claim 6 , wherein the conductive plate includes:
a first conductive part having a first surface facing the substrate and on which the coil is disposed, and a second surface facing opposite to the first surface; and a second conductive part disposed on the first surface and physically separated from the coil.

9 . The electronic device of claim 8 , wherein the conductive plate further includes a conductive bonding material disposed between the second conductive part and the first surface.

10 . The electronic device of claim 8 , wherein the first conductive part and the second conductive part are integrally formed and has same conductive material.

11 . The electronic device of claim 6 , wherein the coil and the conductive plate have different conductive materials.

12 . The electronic device of claim 1 , further comprising:
a flexible printed circuit board including the coil.

13 . The electronic device of claim 12 ,
wherein the flexible printed circuit board further includes at least one conductive pattern that is not disposed between the substrate and the coil and is physically separated from the coil; and wherein the at least one conductive pattern is electrically connected to the ground.

14 . The electronic device of claim 1 , further comprising:
a printed circuit board that overlaps at least in part with the substrate, wherein the coil is disposed between the substrate and the printed circuit board, and wherein the touch sensing circuit is electrically connected to a touch controller integrated circuit (IC) disposed on the printed circuit board.

15 . The electronic device of claim 1 , further comprising:
a foldable housing including:
a first housing structure having a first surface and a second surface opposite to the first surface,
a second housing structure having a third surface and a fourth surface opposite to the third surface, and
a hinge structure connecting the first housing structure and the second housing structure, wherein the first surface and the third surface face each other when the first housing structure and the second housing structure are folded around the hinge structure;
a touch pad disposed within the first housing structure and forming a portion of the first surface; and a display disposed within the second housing structure and forming at least a portion of the third surface,
wherein the touch pad includes the substrate including the touch sensing circuit.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Yongjae
• Cha Jaedeok
• Kim Seoncheol
• Lee Byongjeon
• Bae Jungje
• Youn Jaesub

Classifications

• H04B5/79 Primary

  for data transfer in combination with power transfer · CPC title

• H01Q1/38

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H02J50/005

  Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices · CPC title

• H02J50/90

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

• H02J50/80

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