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Magnetic sheet and wireless power receiving device comprising same

A technology of wireless power and receiving devices, applied in circuit devices, battery circuit devices, transportation and packaging, etc., can solve the problems of lower transmission efficiency, increase of magnetic sheet thickness, and decrease of effective magnetic permeability, so as to achieve high transmission efficiency and reduce The effect of small thickness and high effective permeability

Inactive Publication Date: 2019-04-26
SCRAMOGE TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if an adhesive film is placed between the tapes, the effective magnetic permeability decreases due to flux loss occurring in the adhesive film, thereby reducing transmission efficiency
Also, if the number of laminated layers is increased to compensate for effective permeability, the thickness of the magnetic sheet may increase

Method used

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  • Magnetic sheet and wireless power receiving device comprising same
  • Magnetic sheet and wireless power receiving device comprising same
  • Magnetic sheet and wireless power receiving device comprising same

Examples

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Embodiment Construction

[0048] Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. The embodiments can be modified in various ways. However, this is not intended to limit the embodiments to specific embodiments. The examples are provided in order to provide a thorough understanding of the present disclosure.

[0049]In the following description of the embodiments, it should be understood that when each element is referred to as being formed "on" or "under" another element, it may be directly on or under another element, or may be indirectly formed on or under another element. One or more intermediate elements are formed therebetween.

[0050] In addition, it should also be understood that "on" or "under" an element may refer to an upward direction and a downward direction of the element.

[0051] In addition, related terms such as "first" and "second", "top / upper / above", "bottom / lower / below" in the description and claims can be used to distin...

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PUM

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Abstract

A magnetic sheet according to an embodiment comprises: a first magnetic sheet portion comprising a first surface; a second magnetic sheet portion comprising a second surface that faces the first surface; and an attachment portion arranged between the first surface and the second surface, wherein the attachment portion may comprise a plurality of magnetic particles and a coating layer that is coated with the plurality of magnetic particles and comprises an organic material.

Description

technical field [0001] The embodiment relates to a magnetic sheet and a wireless power receiving device including the magnetic sheet. Background technique [0002] As the Near Field Communication (NFC) function is applied to mobile phones such as smartphones, the NFC function has been widely used for payment means, transportation cards, access cards, or peer-to-peer (P2P) information exchange between mobile phones. Since NFC uses a frequency of 13.56MHz and uses a very short-range communication method that works only within a distance of up to 20cm, NFC is safe from hacking and suitable as a means of payment. [0003] Considering the size of an NFC antenna (not shown) for implementing such an NFC function, the NFC antenna is provided on the backside of a battery contained in a smartphone (not shown), mounted on the backside of a smartphone case, or subjected to inner molding (in-molding). In particular, the casing of the smartphone battery is made of metal, so electromagne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F27/245H01F27/255H01F10/00H01F38/14H02J50/00H02J7/02
CPCH01F38/14H02J50/12H02J50/70H01F27/255H01F27/25H01F27/263H01F27/2804H01F1/37H01F1/28H02J50/005H02J50/10H01F10/005H01F10/00H01F27/245H01F27/28
Inventor 尹钟钦李相元裵硕俞瑄煐
Owner SCRAMOGE TECH LTD
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