US Patent No. 10,398,067

MAGNETIC SHIELDING MEMBER AND WIRELESS POWER RECEIVER INCLUDING THE SAME


Patent No. 10,398,067
Issue Date August 27, 2019
Title Magnetic Shielding Member And Wireless Power Receiver Including The Same
Inventorship Dong Hyuk Lee, Seoul (KR)
Ji Yeon Song, Seoul (KR)
Assignee LG INNOTEK CO., LTD., Seoul (KR)

Claim of US Patent No. 10,398,067

1. A wireless power receiver comprising:a reception coil configured to wirelessly receive AC power;
a first shielding member that is a magnetic shielding member having a thickness of 17 ?m to 25 ?m;
a second shielding member that is a soft magnetic shielding member having a thickness of 0.1 mm or more;
a first adhesive member disposed between the first shielding member and the second shielding member;
a first flexible insulating cover layer disposed between the reception coil and the first and second shielding members; and
a second flexible insulating cover layer disposed on the first adhesive member and the first and second shielding members,
wherein the first adhesive member and the first and second shielding members are disposed between the first and second flexible insulating cover layers,
wherein the first shielding member and the second shielding member are made of different materials and configured to block a magnetic field,
wherein a ratio of the thickness of the first shielding member to the thickness of the second shielding member is approximately 1:5,
wherein the first shielding member has a circular shape and a diameter of 30 mm or less,
wherein the first adhesive member and the first and second magnetic shielding members are fully sealed between the first and second flexible insulating cover layers, and
wherein a combination of the first and second shielding members has a magnetic permeability characterized in that a real part has a value of 300 or less and an imaginary part has a value of 20 or less in a low-frequency band of 300 KHz or less.