Electronic device and case device including magnets

Patent metadata

Field	Value
Publication number	US-2025070811-A1
Application number	US-202418815202-A
Country	US
Kind code	A1
Filing date	Aug 26, 2024
Priority date	Aug 23, 2023
Publication date	Feb 27, 2025
Grant date	—

Abstract

An electronic device is provided. The electronic device includes a display, a coil, a magnet assembly including a plurality of first magnets disposed to surround the coil and a plurality of second magnets disposed to be spaced a designated distance apart from the plurality of first magnets so as to surround the plurality of first magnets, a first shielding sheet extending along the magnet assembly toward the display so as to be attached to the magnet assembly, a second shielding sheet disposed between the coil and the display toward the display from the first shielding sheet, and a third shielding sheet disposed between the display and the second shielding sheet.

First claim

What is claimed is:

1 . An electronic device comprising:
a display; a coil; a magnet assembly comprising:
a plurality of first magnets disposed to surround the coil,
a plurality of second magnets disposed to be spaced a designated distance apart from the plurality of first magnets so as to surround the plurality of first magnets,
a first shielding sheet extending along the magnet assembly toward the display so as to be attached to the magnet assembly,
a second shielding sheet disposed between the coil and the display toward the display from the first shielding sheet, and
a third shielding sheet disposed between the display and the second shielding sheet.

2 . The electronic device of claim 1 , wherein the first shielding sheet has an area substantially identical to an area of the magnet assembly formed by the plurality of first magnets and the plurality of second magnets.

3 . The electronic device of claim 1 , further comprising:
a digitizer disposed at a position opposing to the display, wherein the third shielding sheet is disposed between the digitizer and the second shielding sheet.

4 . The electronic device of claim 2 , further comprising:
a specific area in a part of the first shielding sheet where no material constituting the first shielding sheet is disposed.

5 . The electronic device of claim 4 , wherein a width (W) of the specific area is less than or equal to a length (L) of a first magnet or a second magnet of the plurality of first magnets and the plurality of second magnets.

6 . The electronic device of claim 5 , wherein the specific area is disposed at a position opposing to the first magnet and the second magnet.

7 . The electronic device of claim 4 , wherein the specific area is disposed at a position opposing to a central area of the area where the second shielding sheet is disposed.

8 . The electronic device of claim 5 ,
wherein the first magnet comprises a first layer and a second layer that is an upper layer of the first layer, wherein the second magnet comprises a third layer and a fourth layer that is an upper layer of the third layer, wherein the first layer and the fourth layer are magnetized in a first polarity, and wherein the second layer and the third layer are magnetized in a second polarity opposite the first polarity.

9 . The electronic device of claim 8 , further comprising:
a magnet disposed in an area corresponding to the designated distance between the plurality of first magnets and the plurality of second magnets.

10 . The electronic device of claim 9 , wherein the magnet is magnetized in the second polarity toward the plurality of first magnets and is magnetized in the first polarity toward the plurality of second magnets.

11 . The electronic device of claim 9 , wherein a thickness of the first shielding sheet is configured to be about 0.5 mm or less, based on the magnet further included.

12 . The electronic device of claim 1 ,
wherein the first shielding sheet is disposed to shield a magnetic field generated toward the display, and wherein the first shielding sheet comprises a specific area in at least a part thereof where no material constituting the first shielding sheet is disposed to reduce eddy current.

13 . The electronic device of claim 1 , wherein the magnet assembly is disposed to be spaced a specified distance apart from the second shielding sheet.

14 . The electronic device of claim 1 , wherein the designated distance substantially corresponds to an area of an opening formed in a corresponding magnet assembly of an external device comprising the magnet assembly.

15 . A case device comprising:
a magnet assembly comprising:
a plurality of first magnets disposed to face electronic device comprising a coil and surround the coil,
a plurality of second magnets disposed to be spaced a designated distance apart from the plurality of first magnets so as to surround the plurality of first magnets, and
a shielding sheet extending along the magnet assembly toward the electronic device and attached to the magnet assembly.

16 . The case device of claim 15 , wherein the shielding sheet has an area substantially identical to an area of the magnet assembly formed by the plurality of first magnets and the plurality of second magnets.

17 . The case device of claim 15 , further comprising:
a specific area in a part of the shielding sheet where no material constituting a first shielding sheet is disposed.

18 . The case device of claim 17 , wherein a width (W) of the specific area is less than or equal to a length (L) of a first magnet or a second magnet of the plurality of first magnets and the plurality of second magnets.

19 . The case device of claim 18 , wherein the specific area is disposed at a position opposing to the first magnet and the second magnet.

20 . The case device of claim 19 , further comprising:
a magnet disposed in an area corresponding to the designated distance between the plurality of first magnets and the plurality of second magnets, wherein the first magnet comprises a first layer and a second layer that is an upper layer of the first layer, wherein the second magnet comprises a third layer and a fourth layer that is an upper layer of the third layer, wherein the first layer and the fourth layer are magnetized in a first polarity and the second layer, wherein the third layer are magnetized in a second polarity opposite the first polarity, and wherein the magnet is magnetized in the second polarity toward the plurality of first magnets and is magnetized in the first polarity toward the plurality of second magnets.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Choe Hana
• Lim Taejun
• Park Bumjin
• You Jaehyoung
• Lee Woosup
• Choi Sehwan

Classifications

• H04B5/26

  using coils · CPC title

• H04B1/3888 Primary

  Arrangements for carrying or protecting transceivers · CPC title

• H04B5/48 Primary

  Transceivers · CPC title

• H05K9/00

  Screening of apparatus or components against electric or magnetic fields (devices for absorbing radiation from an antenna H01Q17/00) · CPC title

• H05K5/02

  Details · CPC title