KR20160094242A - A magnetic sheet, a coil assembly and an apparatus comprising the same, and a method for manufacturing the magnetic sheet - Google Patents

A magnetic sheet, a coil assembly and an apparatus comprising the same, and a method for manufacturing the magnetic sheet Download PDF

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Publication number
KR20160094242A
KR20160094242A KR1020150049837A KR20150049837A KR20160094242A KR 20160094242 A KR20160094242 A KR 20160094242A KR 1020150049837 A KR1020150049837 A KR 1020150049837A KR 20150049837 A KR20150049837 A KR 20150049837A KR 20160094242 A KR20160094242 A KR 20160094242A
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South Korea
Prior art keywords
magnetic
magnetic member
region
coil
disposed
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KR1020150049837A
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Korean (ko)
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KR101740785B1 (en
Inventor
임현근
장기원
한창목
성재석
박철균
김춘희
조형욱
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삼성전기주식회사
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Priority to CN201610009175.8A priority Critical patent/CN105845382B/en
Publication of KR20160094242A publication Critical patent/KR20160094242A/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0075—Magnetic shielding materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/16—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates the magnetic material being applied in the form of particles, e.g. by serigraphy, to form thick magnetic films or precursors therefor
    • H02J17/00—

Abstract

According to an embodiment of the present invention, provided are a magnetic sheet, a coil assembly and an apparatus having the same, and a method for manufacturing the magnetic sheet. The magnetic sheet comprises: a first magnetic member arranged in a first area; and a second magnetic member arranged in a second area which is not overlapped with the first area, and having properties different from those of the first magnetic member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic sheet, a coil assembly and a device including the same, and a method of manufacturing a magnetic sheet,

The present invention relates to a magnetic sheet which can be applied to an apparatus including a plurality of different coils, a coil assembly and a device including the same, and a method of manufacturing the magnetic sheet.

When a coil for transmitting and / or receiving a signal is placed in the apparatus, a magnetic sheet is required for smooth signal transmission and reception.

In addition, a variety of communication devices including a smart phone and a variety of home appliances are often equipped with a plurality of coils disposed therein to perform various functions. For example, the devices may include coils for wireless power transmission and coils for short range communication. Furthermore, as the devices become smaller, attempts have been made to more efficiently position the coils within the device. For example, in order to arrange a plurality of coils in the same area, an integrated part of the coils is used.

Korean Patent Publication No. 2014-0101665

As described above, when a plurality of coils are disposed in the same area in the device, each of the plurality of coils needs a magnetic sheet having different characteristics for each area in order to smoothly transmit or receive signals.

According to an embodiment of the present invention, there is provided a magnetic sheet having different characteristics for each region.

According to an embodiment of the present invention, there is provided a coil assembly including the magnetic sheet.

According to an embodiment of the present invention, there is provided an apparatus including the magnetic sheet.

According to an embodiment of the present invention, a manufacturing method of the magnetic sheet is provided.

A magnetic substance sheet according to an embodiment of the present invention includes a first magnetic member disposed in a first region and a second magnetic member disposed in a second region not overlapping with the first region and having a characteristic different from that of the first magnetic member, Member.

The first region may include a central portion of the magnetic substance sheet, and the second region may include an outer portion of the first region.

The first magnetic member may include an amorphous material, and the second magnetic member may include a ferrite sintered body.

The magnetic substance sheet according to an embodiment of the present invention may further include a third magnetic member disposed in a third region that is not overlapped with the first region and the second region and has a characteristic different from that of the first magnetic member .

According to the magnetic substance sheet according to the embodiment of the present invention, the coil assembly and the device including the same, and the method of manufacturing the magnetic substance sheet, it is possible to easily design the magnetic substance sheet with desired specifications for each region, . Therefore, even when the coils of various functions are arranged in one device, it is possible not only to transmit and / or receive signals smoothly through the coils, but also to miniaturize the device.

1 schematically shows a configuration of an apparatus including a magnetic sheet according to an embodiment of the present invention.
2 schematically shows a part of a device including a magnetic sheet according to an embodiment of the present invention.
Each of Figs. 3 to 6 schematically shows a plan view of a magnetic sheet according to an embodiment of the present invention.
7 and 8 are views for schematically explaining a method of manufacturing a magnetic sheet according to an embodiment of the present invention.
9 to 16 schematically show cross-sectional views of a magnetic sheet according to an embodiment of the present invention.
17 to 22 each schematically show a coil assembly including a magnetic sheet according to an embodiment of the present invention.

Hereinafter, a magnetic sheet according to an embodiment of the present invention, a coil assembly including a magnetic sheet, an apparatus, and a method of operating the magnetic sheet will be described with reference to the drawings.

1 schematically shows a configuration of a device 1 including a magnetic substance sheet 100 according to an embodiment of the present invention. The device 1 includes a magnetic substance sheet 100 and a coil section 200 A coil assembly 300, a battery 400, an apparatus body 500, and a cover 600.

The magnetic substance sheet 100 suppresses the formation of a magnetic field (or an electric field) up to a portion where the magnetic field (or electric field) is focused or a part of the device 1 including the battery 400 or other metal is disposed, The coils of the antenna 200 can smoothly transmit and / or receive a signal, and the circuits and the like in the device are prevented from being affected by an external magnetic field (or an electric field). The magnetic substance sheet 100 has different properties (permeability, shielding ratio, permeability, etc.) in each region. Various embodiments of the magnetic substance sheet 100 will be described later.

The coil portion 200 includes a plurality of coils for transmitting and receiving signals. The coil unit 200 is implemented by forming a conductive pattern on a printed circuit board (PCB) or a flexible printed circuit board (FPCB), and transmits and receives power or communication signals with the apparatus body. 0.0 > 201 < / RTI > The magnetic sheet 100 is attached to a second surface of the coil portion 200 opposite to the first surface of the coil portion 200. The first surface of the coil portion 200 faces the outside of the device.

The magnetic substance sheet 100 and the coil part 200 are combined to form a coil assembly 300. The magnetic substance sheet 100 and the coil part 200 are bonded using an adhesive layer. In this case, the adhesive layer may be a double-sided adhesive film or an adhesive, and may be disposed on the magnetic substance sheet 100 or the coil section 200.

The battery 400 stores electric energy and supplies electric power to the main body 500 of the apparatus.

The main body 500 receives electric power from the battery 400, receives a signal received by the coil of the coil part 200, and outputs a signal to be transmitted through the coil of the coil part 200. The apparatus main body 500 includes a contact terminal 501 for electrical contact with the coil portion 200. When wireless power is received through the coil of the coil part 200, the device body 500 charges the battery 400 by supplying the wireless power to the battery 400.

The cover 600 is coupled to the apparatus body 500 to protect the coil assembly 300, the battery 300, and the like.

The coil unit 200 may be integrated with the battery 400, the apparatus main body 500, or the cover 600. In this case, When the coil part 200 is integrated with the main body 500, the coil part 200 and the terminals 201 and 501 of the main body 500 may be omitted. When the coil part 200 is integrally formed with the cover 600, the terminal 201 may be formed on the cover 600.

1 illustrates a mobile device such as a smart phone as an example of a device according to an embodiment of the present invention. However, the idea of the present invention can be applied not only to other mobile devices such as a tablet PC (personal computer) have.

FIG. 2 is a schematic view of a portion of a device 1 including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300, the battery 400, the rectifier 710, and the communication module 720, .

The coil assembly 300 includes a coil portion 200 (FIG. 1) and a magnetic sheet (FIG. 1) 100 and the coil portion 300 of the coil assembly 300 (200 in FIG. 1) A coil 210 and a second coil 220 for short-range communication.

The rectifier 710 rectifies the radio power received through the first coil 210 and outputs the charging power.

The communication module 720 receives power from the battery 400 and transmits and receives data through the second coil 220.

The rectifier 710 and the communication module 720 may be disposed in the machine body (500 in FIG. 1). Or the rectifier 710 may be disposed in the coil portion 200 of the coil assembly 300 and the communication module 720 may be disposed in the device body 500 of FIG.

The battery 400 receives the charging power output from the rectifier 710 and stores electrical energy, and supplies power to the communication module 720 using the stored electrical energy.

FIG. 3 is a schematic plan view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100 according to an embodiment of the present invention includes a first magnetic member 111 and a second magnetic member 112, .

The first magnetic member 111 is disposed at the center of the magnetic substance sheet 100 and the second magnetic member 112 is disposed at the outer periphery of the first magnetic member 111 in the same layer as the first magnetic member 111 . That is, the first magnetic member 111 and the second magnetic member 112 are disposed in one layer.

In addition, the first magnetic member 111 and the second magnetic member 112 have different characteristics. That is, at least one of the magnetic permeability, the shielding ratio, and the loss ratio of the first magnetic member 111 and the second magnetic member 112 are different from each other.

The first magnetic member 111 may improve signal transmission and reception characteristics in a coil or an antenna that transmits and / or receives a signal of a first frequency and the second magnetic member 112 may improve a signal transmission / Reception characteristics of a coil or an antenna for transmitting and / or receiving a signal of the antenna can be improved. The first frequency may be a frequency for wireless power transmission according to the WPC (Wireless Power Consortium) standard or a frequency for wireless power transmission according to the PMA (Power Matrix Alliance) standard or a wireless power transmission according to the A4WP (Alliance for Wireless Power) And the second frequency may be a frequency for Near Field Communication (NFC) or a frequency for wireless power transmission according to the A4WP (Alliance for Wireless Power) standard. The frequency for wireless power transmission according to the WPC standard may be 110 kHz to 205 kHz, the frequency for wireless power transmission according to the PMA standard may be 277 kHz to 357 kHz, the frequency for NFC may be 13.56 MHz, The frequency for the wireless power transmission may be 6.78MHz.

If a metal or the like is present near a coil receiving a low-frequency high-power signal such as radio power, a loss due to an eddy current becomes large. If there is a circuit element near the coil, the circuit element also receives a signal , Magnetic field signals). Therefore, when the coil receives a signal of low frequency and high power such as radio power, it is necessary to prevent the influence of the magnetic field on the metal or circuit adjacent to the coil to the utmost because the permeability and shielding ratio of the magnetic sheet for the coil are sufficiently large have. In the magnetic sheet according to the embodiment of the present invention, the first magnetic member 111 disposed in the region corresponding to the region where the coil for receiving the low-frequency high-power signal such as the radio power is disposed is disposed in the frequency region of 110 kHz or more and 205 kHz or less A permeability of 80 or more and 2000 or less, or a permeability of 100 to 700 at a frequency of 6.78 MHz.

In the case of an amorphous sheet containing an amorphous material, the permeability and shielding ratio are high due to the material structure. In addition, the thickness of the magnetic sheet decreases as the thickness of the magnetic sheet decreases. In the case of an amorphous sheet, the thickness of the magnetic sheet also has a high degree of magnetic saturation. Therefore, in the magnetic sheet according to the embodiment of the present invention, the first magnetic member 111 disposed in the region corresponding to the region where the coil receiving the low-frequency high-power signal such as the radio power is disposed includes the amorphous material . Specifically, the first magnetic member 111 includes Nb-Si, Ti-Nb-Si, Mo-Si, Zr-Si, Nb-Ti, Nb3Sn, or V3Ga.

In the case of the magnetic sheet, in general, the higher the magnetic permeability, the higher the loss rate. When a coil transmits and receives a high-frequency low-power signal such as a short-range communication (NFC) signal, the higher the magnetic permeability of the magnetic substance sheet, the greater the loss in the magnetic substance sheet. Therefore, it is necessary to use a magnetic sheet having a low magnetic permeability and a low loss for a coil for transmitting and receiving a signal of high frequency and low power such as a short range communication (NFC) signal. In the magnetic sheet according to the embodiment of the present invention, the second magnetic member 112 disposed in the region corresponding to the region where the coil for transmitting and receiving the high frequency low power signal such as the short distance communication (NFC) signal is disposed, A permeability of 80 or more and 300 or less and a loss ratio of 1 or more and 20 or less.

In the case of a ferrite sheet including a ferrite sintered body, the permeability is low, and the difference between the permeability and the loss ratio at a low frequency and the magnetic permeability and loss ratio at a high frequency are small. Therefore, in the magnetic sheet according to the embodiment of the present invention, the second magnetic member 112 disposed in the region corresponding to the region where the coil for transmitting and receiving the high-frequency low-power signal such as the short-range communication (NFC) . Specifically, the second magnetic member 112 includes Mg-Zn, Ni-Zn, Mn-Zn, SrFe2O19, Baf12O19, or CoFe2O4.

In the case of wireless power according to the A4WP standard, the frequency is relatively high and the power is also large. Therefore, when the coil receives radio power according to the A4WP standard, the material of the magnetic member can be selected according to the size of the coil. For example, in the case where the coil has a small radius, that is, a coil is disposed in a region corresponding to a region where the first magnetic member 111 is disposed, a magnetic member including an amorphous material is used, The magnetic member including the ferrite sintered body can be used when the coil is disposed in the region corresponding to the region where the second magnetic member 112 is disposed.

3 illustrates a case where the first magnetic member 111 is disposed at the center and the second magnetic member 112 is disposed at the outer periphery of the first magnetic member 111. However, The arrangement of the two magnetic members 112 can be variously modified under the condition that the two magnetic members are disposed on the same layer. That is, the first magnetic member 111 is disposed on the upper portion of the first region on any plane, and the second magnetic member 112 is disposed on the upper portion of the second region that does not overlap the first region on the plane The arrangement of the first magnetic member 111 and the second magnetic member 112 can be variously modified under the condition that they are disposed in the same layer as the magnetic member 111. [

4 is a schematic plan view of a magnetic substance sheet according to an embodiment of the present invention. The magnetic substance sheet 100-1 according to an embodiment of the present invention includes a first magnetic member 111-1, A member 112-1, and a third magnetic member 113-1.

The first magnetic member 111-1 is disposed at the center of the magnetic substance sheet 100-1 and the second magnetic member 112-1 and the third magnetic member 113-1 are disposed at the center of the first magnetic member 111- 1 arranged in the outer periphery of the first magnetic member 111-1 in the same layer as the first magnetic member 111-1. That is, the first magnetic member 111-1, the second magnetic member 112-1, and the third magnetic member 113-1 are disposed in one layer.

The characteristics of the second magnetic member 112-1 and the third magnetic member 113-1 are different from those of the first magnetic member 111-1. The first magnetic member 111-1 has the same characteristics as the first magnetic member 111 described in Fig. 3 and the second magnetic member 112-1 and the third magnetic member 113-1 have the same characteristics And has the same characteristics as the second magnetic member 112 described above.

4, the first magnetic member 111-1 is disposed at the center, and the second magnetic member 112-1 and the third magnetic member 113-1 are disposed at the outer periphery of the first magnetic member 111-1 The arrangement of the first magnetic member 111-1, the second magnetic member 112-1, and the third magnetic member 113-1 is such that the magnetic members are disposed on the same layer And can be variously modified. That is, the first magnetic member 111-1 is disposed on the upper portion of the first region on any plane, and the second magnetic member 112-1 is disposed on the second region on the arbitrary plane, And the third magnetic member 113-1 is disposed on the third region that is not overlapped with the first region and the second region on the arbitrary plane and the first magnetic member 111 -1, the second magnetic member 112-1, and the third magnetic member 113-1 are disposed on one layer, the first magnetic member 111-1, the second magnetic member 112-1, -1), and the arrangement of the third magnetic member 113-1 can be variously modified.

4, the first magnetic member 111-1 has a rectangular shape and the second magnetic member 112-1 and the third magnetic member 113-1 are located at the center of the magnetic sheet 100-1 The shape of the first magnetic member 111-1, the second magnetic member 112-1, and the third magnetic member 113-1 may be variously shaped It can be deformed.

5 is a schematic plan view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-2 according to an embodiment of the present invention includes a first magnetic member 111-2, Member 112-2, a third magnetic member 113-2, a fourth magnetic member 114, and a fifth magnetic member 115. As shown in Fig.

The first magnetic member 111-2 is disposed at the center of the magnetic substance sheet 100-2 and includes a second magnetic member 112-2, a third magnetic member 113-2, a fourth magnetic member 114, And the fifth magnetic member 115 are disposed outside the first magnetic member 111-2 of the same layer as the first magnetic member 111-2 so as not to overlap with each other. That is, the first magnetic member 111-2, the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114 and the fifth magnetic member 115 may be one Layer.

The characteristics of the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114 and the fifth magnetic member 115 are the same as those of the first magnetic member 111-2, . The first magnetic member 111-2 has the same characteristics as the first magnetic member 111 described with reference to FIG. 3 and has a second magnetic member 112-2, a third magnetic member 113-2, The member 114 and the fifth magnetic member 115 have the same characteristics as the second magnetic member 112 described in Fig.

5, the first magnetic member 111-2 is disposed at the center, and the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114, The first magnetic member 111-2, the second magnetic member 112-2, the third magnetic member 113-1, and the third magnetic member 113-1 are disposed on the outer periphery of the first magnetic member 111-1. However, 2, the fourth magnetic member 114 and the fifth magnetic member 115 may be variously modified under the condition that the magnetic members are disposed on the same layer. That is, the first magnetic member 111-2 is disposed on the upper portion of the first region on any plane, and the second magnetic member 112-2 is disposed on the second region on the arbitrary plane, And the third magnetic member 113-2 is disposed on the third region that does not overlap the first region and the second region on the arbitrary plane and the fourth magnetic member 114 ) Is disposed on an upper portion of a fourth region that is not overlapped with the first region, the second region, and the third region on the arbitrary plane, and the fifth magnetic member (115) The first magnetic member 111-2, the second magnetic member 112-2, and the second magnetic member 111-2 are disposed on the first region, the second region, the third region, and the fifth region that is not overlapped with the fourth region, The third magnetic member 113-2, the fourth magnetic member 114 and the fifth magnetic member 115 are disposed in one layer, the first magnetic member 111-2, the second Placement of the member (112-2), the third magnetic element (113-2), a fourth magnetic element 114, and the fifth magnetic member 115 may be variously modified.

5, the first magnetic member 111-2, the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114, and the fifth magnetic member 115 The first magnetic member 111-2, the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114, And the shape of the fifth magnetic member 115 may be variously modified.

4 and 5, in the magnetic sheet according to the embodiment of the present invention, one magnetic member is disposed at the center portion of the magnetic substance sheet, and a plurality of magnetic members are disposed at the edge of the magnetic substance sheet. At this time, the magnetic member disposed at the center portion and the plurality of magnetic members disposed at the edge have different characteristics, and the plurality of magnetic members disposed at the edge have the same characteristics. The number of magnetic members disposed on the edge of the magnetic substance sheet can be variously selected as needed. By constituting the magnetic substance sheet in this manner, the material cost can be reduced.

6 is a schematic plan view of a magnetic substance sheet according to an embodiment of the present invention. The magnetic substance sheet 100-3 according to an embodiment of the present invention includes a first magnetic member 111-3, A member 112-3, and a sixth magnetic member 116. [

The first magnetic member 111-3 is disposed at the center of the magnetic substance sheet 100-3. The second magnetic member 112-3 is disposed on the outer periphery of the first magnetic member 111-3 of the same layer as the first magnetic member 111-3 so as not to overlap with the first magnetic member 111-3 . The sixth magnetic member 116 may be disposed between the first magnetic member 111-3 and the second magnetic member 112-3 in the same layer as the first magnetic member 111-3, 111-3 and the second magnetic member 112-3. That is, the first magnetic member 111-3, the second magnetic member 112-3, and the sixth magnetic member 116 are disposed in one layer.

Further, the first magnetic member 111-3, the second magnetic member 111-3, and the sixth magnetic member 116 have different characteristics from each other. The first magnetic member 111-3 has the same characteristics as the first magnetic member 111 described with reference to FIG. 3 and the second magnetic member 112-3 has the same characteristics as the second magnetic member 112 described with reference to FIG. .

6 illustrates the case of constructing the magnetic substance sheet using three magnetic members, a magnetic substance sheet may be constructed by disposing a larger number of magnetic members in the same manner as shown in Fig.

7 is a schematic view for explaining a method of manufacturing a magnetic sheet according to an embodiment of the present invention.

Referring to FIG. 7A, a ferrite sheet is cut to provide a plurality of second magnetic members 112 as shown in FIG. The first magnetic members 111 also cut off the amorphous sheet.

Next, referring to FIG. 7 (b), the second magnetic member 112 is first disposed on one surface of the adhesive layer 190. Next, the first magnetic member 111 is disposed on the same surface as the surface on which the second magnetic member 112 is disposed so as to form one layer with the second magnetic member 112.

7B illustrates a case where the first magnetic member 111 is disposed after the second magnetic member 112 is disposed. However, after the first magnetic member 111 is disposed, the second magnetic member 112 is disposed, May be disposed.

8 is a schematic view for explaining a method of manufacturing a magnetic sheet according to an embodiment of the present invention.

8 (a), a ferrite sheet is cut as shown to provide a plurality of second magnetic members 112-1 and a plurality of third magnetic members 113-1. As described above, the second magnetic member 112-1 and the third magnetic member 113-1 have the same shape, and after the magnetic substance sheet is formed, the center of the magnetic substance sheet may be symmetrical with respect to the origin as the origin. Further, the first magnetic members 111 are also provided by cutting off the amorphous sheet.

Next, referring to FIG. 8 (b), a second magnetic member 112-1 is disposed on one surface of the adhesive layer 190. FIG. Next, a third magnetic member 113-1 is disposed on the same surface as the surface on which the second magnetic member 112-1 is disposed so as not to overlap with the second magnetic member 112-1. Next, the second magnetic member 112-1 and the third magnetic member 113-1 are disposed on the same surface as the surface on which the second magnetic member 112-1 and the third magnetic member 113-1 are disposed, The first magnetic member 111-1 is disposed so as not to overlap with the first magnetic member 111-1. At this time, the first magnetic member 111-1, the second magnetic member 112-1, and the third magnetic member 113-1 are included in one layer.

8B shows a case where the second magnetic member 112-1, the third magnetic member 113-1 and the first magnetic member 111-1 are arranged in this order. However, the order of arrangement is changed .

The magnetic sheet according to one embodiment of the present invention shown in Figs. 5 and 6 can also be manufactured by a method similar to that described in Fig.

FIG. 9 schematically shows a cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-4 according to an embodiment of the present invention includes a first magnetic member 111-4, The first magnetic layers 111-4 and 112-4 including the member 112-4, the adhesive layer 191-1, and the outer layer 192-1.

Each of the first magnetic member 111-4 and the second magnetic member 112-4 has the same characteristics as the first magnetic member 111 and the second magnetic member 112 described in FIG.

The adhesive layer 191-1 serves to fix the first magnetic member 111-4 and the second magnetic member 112-4 and at the same time the magnetic substance sheet 111-4 is attached to the coil part, . That is, the adhesive layer 191-1 has a first surface and a second surface, the first surface is attached to a coil part or the like, and the second surface is bonded to the first magnetic member 111-4 and the second magnetic member 112- 4 to the first magnetic layer 111-4, 112-4. The adhesive layer 191-1 is realized by a double-sided adhesive film or an adhesive. The adhesive layer 191-1 may make the magnetic substance sheet 111-4 maintain a constant shape.

The outer layer 192-1 fixes the first magnetic member 111-4 and the second magnetic member 112-4. Further, the outer layer 192-1 protects the first magnetic member 111-4 and the second magnetic member 112-4. The outer layer 192-1 may be formed of a plastic film, for example, a polyethylene terephthalate (PET) film. The outer layer 192-1 may function to allow the magnetic sheet 100-4 to maintain a certain shape.

FIG. 10 schematically shows a cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-5 according to an embodiment of the present invention includes a first adhesive layer 191-2, The first and second magnetic layers 111-5 and 112-5, the second adhesive layer 193-1, the second magnetic layer 120-1, and the second magnetic layer 112-5 including the first magnetic layer 111-5 and the second magnetic layer 112-5, And an outer layer 192-1.

The first adhesive layer 191-2 has the same characteristics as the adhesive layer 191-1 described in Fig.

Each of the first magnetic member 111-5 and the second magnetic member 112-5 has the same characteristics as the first magnetic member 111 and the second magnetic member 112 described in FIG.

The second adhesive layer 193-1 allows the first magnetic layers 111-5 and 112-5 and the second magnetic layer 120-1 to adhere to each other. Further, the second adhesive layer 193-1 fixes the first magnetic member 111-5 and the second magnetic member 112-5. The second adhesive layer 193-1 is formed of a double-sided adhesive film or an adhesive.

The second magnetic layer 120-1 is disposed between the first magnetic layers 111-5 and 112-5 and the outer layer 192-2. The second magnetic layer 120-1 has a relatively large magnetic permeability to improve shielding effect and wireless charging efficiency. To this end, the second magnetic layer 120-1 has a magnetic permeability in a frequency range of 100 kHz or more and 205 kHz or less and a magnetic permeability in a range of 80 to 2000 or a permeability in a range of 100 to 700 at a frequency of 6.78 MHz. Or the second magnetic layer 120-1 includes an amorphous material. For example, the second magnetic layer 120-1 includes Nb-Si, Ti-Nb-Si, Mo-Si, Zr-Si, Nb-Ti, Nb3Sn, or V3Ga. Or the second magnetic layer 120-1 is implemented using a metal sheet.

The outer layer 192-2 protects the second magnetic layer 120-1. The outer layer 192-2 may be embodied as a plastic film, for example, a polyethylene terephthalate (PET) film. The outer layer 192-2 may function to allow the magnetic sheet 100-5 to maintain a certain shape.

The magnetic sheet 100-5 according to the embodiment of the present invention shown in Fig. 10 can further improve the wireless charging efficiency.

11 is a schematic cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-6 according to an embodiment of the present invention includes a first adhesive layer 191-3, The first magnetic layers 111-6 and 112-6 including the second magnetic member 111-6 and the second magnetic member 112-6, the second adhesive layer 193-2, the second magnetic layer 120-2, Layer 192-3, a third adhesive layer 194, and a third magnetic layer 130. [

Each of the first magnetic member 111-6 and the second magnetic member 112-6 has the same characteristics as the first magnetic member 111 and the second magnetic member 112 described in FIG.

Each of the second adhesive layer 193-2, the second magnetic layer 120-2 and the outer layer 192-3 has the second adhesive layer 193-1, the second magnetic layer 120-1, And the outer layer 192-2.

The first adhesive layer 191-3 allows the magnetic substance sheet 100-6 to be adhered to a coil part or the like. The first adhesive layer 191-3 may be formed of a double-sided adhesive tape or an adhesive. In addition, the first adhesive layer 191-3 may be formed so that the magnetic substance sheet 100-6 maintains a constant shape.

The third adhesive layer 194 serves to fix the first magnetic member 111-6 and the second magnetic member 112-5 and the first magnetic layer 111-6 and the second magnetic layer 112-5 serve as the third To be bonded to the magnetic layer (130). The third adhesive layer 194 may be embodied as a double-sided adhesive tape or an adhesive.

The third magnetic layer 130 is disposed between the first magnetic layers 111-6 and 112-6 and the adhesive layer 191-3. The third magnetic layer 130 has a relatively high magnetic permeability to improve shielding effect and wireless charging efficiency. To this end, the third magnetic layer 130 has a magnetic permeability in a frequency range of 100 kHz or more and 205 kHz or less and a magnetic permeability in a range of 80 to 2000 or a permeability in a range of 100 to 700 at a frequency of 6.78 MHz. Or the third magnetic layer 130 includes an amorphous material. For example, the third magnetic layer 130 includes Nb-Si, Ti-Nb-Si, Mo-Si, Zr-Si, Nb-Ti, Nb3Sn, or V3Ga. Or the third magnetic layer 130 is implemented using a metal sheet.

The magnetic sheet 100-6 according to the embodiment of the present invention shown in Fig. 11 can arrange the sheets of different materials at an intersection to adjust the parasitic capacitance to a desired value. The magnetic sheet 100-6 according to the embodiment of the present invention shown in Fig. 11 is configured such that the coil disposed in the region corresponding to the first magnetic member 111-6 is a signal of a low frequency high power (for example, WPC (E.g., wireless power according to the standard), and a coil disposed in a region corresponding to the second magnetic member 112-6 transmits a signal of high frequency high power (for example, wireless power according to the A4WP standard) And / or the signal transmission / reception efficiency in the case of receiving.

11 shows the case where the magnetic substance sheet 100-6 includes the second magnetic layer 120-2 and the third magnetic layer 130. However, the magnetic substance sheet 100-6 includes only the third magnetic layer 130 You may.

12 is a schematic cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-7 according to an embodiment of the present invention includes a first adhesive layer 191-4, The first magnetic layers 111-7 and 112-7 including the second magnetic member 111-7 and the second magnetic member 112-7, the fourth adhesive layer 195, the seventh magnetic member 141, The fifth magnetic layer 151 and 152 including the ninth magnetic member 151 and the tenth magnetic member 152 and the fourth magnetic layer 141 and 142 including the third magnetic layer 142 and the fifth adhesive layer 196, And an outer layer 192-4.

The first adhesive layer 191-4 has the same characteristics as the adhesive layer 191-1 described in Fig.

Each of the first magnetic member 111-7 and the second magnetic member 112-7 has the same characteristics as the first magnetic member 111 and the second magnetic member 112 described in FIG.

The fourth adhesive layer 195 fixes the first magnetic member 111-7 and the second magnetic member 112-7 and the seventh magnetic member 141 and the eighth magnetic member 142, (111-7, 112-7) and the fourth magnetic layer (141, 142) are bonded to each other.

The seventh magnetic member 141 is disposed on the top of the first region where the first magnetic member 111-7 is disposed and the eighth magnetic member 142 is disposed on the top of the first region on which the second magnetic member 112-7 is disposed 2, and the seventh magnetic member 141 and the eighth magnetic member 142 have different characteristics from each other. The seventh magnetic member 141 has the same characteristics as the second magnetic member 112-7 and the eighth magnetic member 142 has the same characteristics as the first magnetic member 111-7.

The fifth adhesive layer 196 is formed by fixing the seventh magnetic member 141 and the eighth magnetic member 142 and the ninth magnetic member 151 and the tenth magnetic member 152 and the fourth magnetic layer 141 and 142 And the fifth magnetic layers 151 and 152 are bonded to each other.

The ninth magnetic member 151 is disposed on the upper portion of the first region where the first magnetic member 111-7 is disposed and the sixth magnetic member 162 is disposed on the upper portion of the first region where the second magnetic member 112-7 is disposed 2, and the ninth magnetic member 151 and the tenth magnetic member 152 have different characteristics from each other. The ninth magnetic member 151 has the same characteristics as the first magnetic member 111-7 and the tenth magnetic member 152 has the same characteristics as the second magnetic member 112-7.

The outer layer 192-4 fixes the ninth magnetic member 151 and the tenth magnetic member 152. In addition, the outer layer 192-4 protects the fifth magnetic layers 151 and 152. The outer layer 192-4 may be formed of a plastic film, for example, a polyethylene terephthalate (PET) film. The outer layer 192-4 may function to allow the magnetic sheet 100-7 to maintain a certain shape.

According to an embodiment of the present invention shown in FIG. 12, the magnetic sheet 100-6 can be implemented to have desired characteristics according to the types of coils constituting the coil part to which the magnetic sheet 100-7 is attached.

The first magnetic member 111-7, the second magnetic member 112-7, the seventh magnetic member 141, the eighth magnetic member 142, the ninth magnetic member 151, and the tenth magnetic member 152 may all have different characteristics. In addition, one of the fourth magnetic layers 141 and 142 and the fifth magnetic layers 151 and 152 may be omitted.

12, the first magnetic member 111-7, the seventh magnetic member 141, and the ninth magnetic member 151 are arranged so as to have the same area, and the second magnetic member 112-7, The eighth magnetic member 142 and the tenth magnetic member 152 are arranged so as to have the same area, the first magnetic member 111-7, the seventh magnetic member 141, The area of each of the magnetic members 151 is different and the area of each of the second magnetic member 112-7, the eighth magnetic member 142 and the tenth magnetic member 152 is different from each other.

13 is a schematic cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-8 according to an embodiment of the present invention includes a first adhesive layer 191-5, The first magnetic layer 111-8, 112-8, the sixth adhesive layer 197, the eleventh magnetic member 161 including the second magnetic member 111-8 and the second magnetic member 112-8, A sixth magnetic layer 161, 162 including a second magnetic layer 162, and an outer layer 192-5.

The first adhesive layer 191-5 has the same characteristics as the adhesive layer 191-1 described in Fig.

Each of the first magnetic member 111-8 and the second magnetic member 112-8 has the same characteristics as the first magnetic member 111 and the second magnetic member 112 described in FIG.

The sixth adhesive layer 197 is formed by fixing the first magnetic member 111-8 and the second magnetic member 112-8 and the eleventh magnetic member 161 and the twelfth magnetic member 162, (111-8, 112-8) and the fourth magnetic layer (161, 162) are bonded to each other.

The eleventh magnetic member 161 is disposed at the center of the magnetic substance sheet and the twelfth magnetic member 162 is disposed at the periphery of the eleventh magnetic member 161. [ The eleventh magnetic element 161 and the twelfth magnetic element 162 have different characteristics. The eleventh magnetic member 161 has the same characteristics as the first magnetic member 111-8 and the twelfth magnetic member 162 has the same characteristics as the second magnetic member 112-8.

The outer layer 192-5 fixes the eleventh magnetic member 161 and the twelfth magnetic member 162. Further, the outer layer 192-5 protects the sixth magnetic layers 161 and 162. The outer layer 192-5 may be formed of a plastic film, for example, a polyethylene terephthalate (PET) film. The outer layer 192-5 may function to allow the magnetic sheet 100-8 to maintain a certain shape.

13 shows that the first magnetic member 111-8 and the eleventh magnetic member 161 are arranged to have different areas and the second magnetic member 112-8 and the twelfth magnetic member 162 have different areas The first magnetic member 111-8 and the eleventh magnetic member 161 have the same area and the second magnetic member 112-8 and the twelfth magnetic member 162 are arranged to have the same area They may be arranged to have the same area.

14 is a schematic cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-19 according to an embodiment of the present invention includes an adhesive layer 191-6, a first magnetic member A magnetic layer including a first magnetic member 111-9 and a second magnetic member 112-9, and an outer layer 192-6.

The magnetic sheet 100-9 according to the embodiment of the present invention shown in Fig. 14 is the same as the one shown in Fig. 9 except that the first magnetic member 111-9 is thicker than the second magnetic member 112-9 same.

The magnetic sheet 100-9 according to an embodiment of the present invention shown in FIG. 14 can further improve the radio transmission efficiency by making the first magnetic member 111-9 thick, and the first magnetic member 111- 9 are completely sealed by the outer layer 192-6 to the side of the first magnetic member 111-9, thereby preventing damage to the first magnetic member 111-9.

15 is a schematic cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-10 according to an embodiment of the present invention includes an adhesive layer 191-7, a first magnetic member 111 -10) and a second magnetic member 112-10, and an outer layer 192-7.

The magnetic sheet 100-10 according to the embodiment of the present invention shown in Fig. 15 is the same as the one shown in Fig. 9 except that the second magnetic member 112-10 is thicker than the first magnetic member 111-10 same.

The magnetic sheet 100-10 according to an embodiment of the present invention shown in FIG. 14 has a predetermined space formed in the lower portion of the first magnetic member 111-10 so that the coil portion for bonding with the magnetic sheet 100-10 The coil assembly can be made thin even when it has a sensor that is thicker than the coil.

16 is a schematic cross-sectional view of a magnetic sheet according to an embodiment of the present invention. The magnetic sheet 100-11 according to an embodiment of the present invention includes an adhesive layer 191-8, a plurality of first magnetic members Magnetic layers including first magnetic layers 111-111, 111-112 and 111-113 and a second magnetic layer 112-11, and an outer layer 192-8.

The magnetic sheet 100-11 according to an embodiment of the present invention shown in FIG. 16 is configured such that the middle region of the magnetic sheet 100-11 is divided into a plurality of first magnetic members 111-111, 111-112, 111-113 Is the same as the magnetic sheet 100-4 described with reference to FIG.

The plurality of first magnetic members 111-111, 111-112 and 111-113 may be bonded to each other using adhesive layers 198-1 and 198-2 as shown in FIG. 16, 198-1, 198-2).

As described above, a magnetic member including an amorphous material may be disposed in the middle region of the magnetic substance sheet 100-11, and a magnetic member including the ferrite sintered body may be disposed in the edge region of the magnetic substance sheet 100-11 . However, it is difficult to manufacture the magnetic member including the amorphous material thicker than the magnetic member including the ferrite sintered body. Therefore, by forming the magnetic substance sheet as shown in Fig. 16, it is possible to realize the magnetic substance sheet with the thickness enough to perform the function.

Although not shown, the first magnetic layer of the magnetic sheet 100-4 to 100-11 according to the embodiment of the present invention shown in Figs. 9 to 16 may have the same configuration as shown in Figs. 3 to 6. Further, the magnetic sheet 100-4 to 100-11 according to the embodiment of the present invention shown in Figs. 9 to 16 has the adhesive layers 191-1 to 191-8, 193-1, 193-2, 194 to 197 And some or all of the outer layers 192-1 through 192-8 may be omitted.

17 is a schematic view of a coil assembly including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300 according to an embodiment of the present invention includes a first magnetic member 111 and a second magnetic member And a coil portion 200 including a first coil 210 and a second coil 220. The coil portion 200 includes a coil portion 110,

The plane of the magnetic substance sheet 100 has the same configuration as that described in Fig. The cross section of the magnetic substance sheet 100 has the same configuration as that described in Figs. 9 to 16.

The coil portion 200 includes a first coil 210 and a second coil 220. 1, the coil unit 200 includes a first coil 210 and a second coil 210 using a conductive pattern, such as a printed circuit board (PCB) or a flexible printed circuit board (FPCB) The second coil 220 is formed. The first coil 210 is disposed in a region corresponding to the region where the first magnetic member 111 is disposed and the second coil 220 is disposed in a region corresponding to the region in which the second magnetic member 112 is disposed. do.

The first coil 210 transmits and / or receives a signal at a first frequency and the second coil 220 transmits and / or receives a signal at a second frequency higher than the first frequency. For example, the first coil 210 may be a coil that receives wireless power in accordance with the WPC standard, a coil that receives wireless power in accordance with the PMA standard, or a coil that receives information such as magnetic secure transmission (MST) The second coil 220 may be a coil for a short range communication (NFC), a coil for receiving wireless power according to the A4WP standard, . Or the first coil 210 may be a coil for receiving radio power in accordance with the A4WP standard and the second coil 210 may be a coil for NFC.

In FIG. 17, the coils of the coil part 200 are illustrated as having a quadrangular spiral shape. However, each of the coils of the coil part 200 may have various shapes.

In the case of a coil for transmitting and receiving a signal of a large current such as a wireless charging, a magnetic sheet having a large shielding effect is required in order to reduce loss due to an eddy current flowing in the metal. If the shielding effect is insufficient, the function of wireless charging itself can not be realized. Therefore, in this case, the magnetic sheet should have a sufficient thickness. If the magnetic sheet is made of a material with a low shielding effect or does not have a sufficient thickness, the function of the wireless charging itself may not be realized.

On the other hand, in the case of a coil used as a function of a signal communication such as a short distance communication, a magnetic sheet having a low loss characteristic is required so that communication can be performed over a longer distance.

In addition, the magnetic sheet needs to be optimized in accordance with the frequency characteristics of the signal transmitted and received through the coil. That is, when the coil transmits and receives a low-frequency signal (for example, a signal of a frequency band of several hundreds of kHz or less), the lower the DC resistance of the coil, the better the characteristics of the coil. Therefore, according to one embodiment of the present invention, a low-loss magnetic substance sheet can be used for a coil for transmitting and receiving a low-frequency signal, or a magnetic sheet having a high magnetic permeability can be used, and the resistance can be reduced by reducing the length of the coil pattern itself . On the other hand, when the coil transmits and receives a high frequency signal (for example, a signal of several MHz or more), it is necessary to reduce or optimize the influence of parasitic capacitors generated between the metals. Therefore, according to one embodiment of the present invention, a magnetic sheet capable of appropriately adjusting the parasitic capacitor can be used for a coil for transmitting and receiving a high-frequency signal. In this case, the characteristics of the magnetic sheet can be designed differently depending on the size of the coil (resonator).

That is, according to one embodiment of the present invention, the magnetic sheet can be optimized by function, frequency, or characteristics of a resonator or a coil.

Specifically, when the first coil 210 is a coil for receiving radio power and the second coil 220 is a coil for NFC, the first magnetic member 111 is in a frequency range of 100 to 205 kHz, Or a magnetic permeability at a frequency of 6.78 MHz of not less than 100 and not more than 700 and a second magnetic member 112 has a permeability of not less than 80 and not more than 300 at a frequency of 13.56 MHz and a loss ratio of not less than 1 and not more than 20 have. Or the first magnetic member 111 may include an amorphous material and the second magnetic member 112 may include a ferrite sintered body. With this configuration, the overall thickness of the coil assembly 300 can be made thinner, and the first coil 210 can be designed in a direction with a small resistance and a small resistance, and the second coil 220 can be designed in a low- It can be designed to have a resistance characteristic and reduce the influence of the parasitic capacitor to enable communication to a longer distance.

FIG. 18 schematically shows a coil assembly including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300-1 according to an embodiment of the present invention includes a first magnetic member 111-1, The magnetic substance sheet 100-1 including the second magnetic member 112-1 and the third magnetic member 113-1 and the first coil 210-1 and the second coil 220-1, And a coil part 200-1 including the coil part 200-1.

Each of the first magnetic member 111-1, the second magnetic member 112-1 and the third magnetic member 113-1 includes the first magnetic member 111-1 and the second magnetic member 113-1 112-1 and the third magnetic member 113-1, respectively.

The cross section of the magnetic substance sheet 100-1 is the same as any one of the configurations shown in Figs. 9 to 16.

Each of the first coil 210-1 and the second coil 220-1 has the same characteristics as the first coil 210 and the second coil 220 described with reference to FIG.

FIG. 19 schematically shows a coil assembly including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300-2 according to an embodiment of the present invention includes a first magnetic member 111-2, A magnetic substance sheet 300-2 including a second magnetic member 112-2, a third magnetic member 113-2, a fourth magnetic member 114 and a fifth magnetic member 115; And a coil portion 200-2 including a coil 210-2 and a second coil 220-2.

Each of the first magnetic member 111-2, the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114 and the fifth magnetic member 115 is formed as shown in FIG. 5 The same characteristics as those of the first magnetic member 111-2, the second magnetic member 112-2, the third magnetic member 113-2, the fourth magnetic member 114 and the fifth magnetic member 115 .

The cross section of the magnetic substance sheet 100-2 is the same as any one of the configurations shown in Figs. 9 to 16.

Each of the first coil 210-2 and the second coil 220-2 has the same characteristics as the first coil 210 and the second coil 220 described in FIG.

By constructing as shown in FIG. 18 or 19, it is possible to reduce the manufacturing cost of the magnetic substance sheet, thereby reducing the manufacturing cost of the coil assembly. 18 and 19 illustrate the case where there are two or four magnetic members disposed on the outer side of the magnetic substance sheet, the number of magnetic members disposed on the outer side of the magnetic substance sheet can be variously adjusted. In this case, the respective magnetic members are arranged so as not to overlap each other.

FIG. 20 schematically shows a coil assembly including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300-3 according to an embodiment of the present invention includes a first magnetic member 111 and a second A magnetic substance sheet 100 including a magnetic member 112 and a coil portion 200-2 including a first coil 210-3, a second coil 220-3 and a third coil 230-1, 3).

Each of the first magnetic member 111 and the second magnetic member 112 has the same characteristics as the first magnetic member 111 and the second magnetic member 112 described in FIG.

The cross section of the magnetic substance sheet 100 is the same as any one of the configurations shown in Figs. 9 to 16. Although not shown, the magnetic substance sheet 100 may have the same configuration as that shown in Figs.

The first coil 210-3 transmits and / or receives a signal of a first frequency, and the second coil 220 transmits and / or receives a signal of a second frequency higher than the first frequency. The third coil 230-3 has a third frequency lower than the second frequency and may transmit and / or receive a signal having an average power less than the average power of signals transmitted and / or received by the first coil 210-3. Or receive. For example, the first coil 210-3 may be a coil that receives wireless power in accordance with the WPC standard, or may be a coil that receives wireless power in accordance with the PMA standard, and the second coil 220-3 may be a short- (NFC), or a coil for receiving wireless power according to the A4WP standard, and the third coil 230-3 may be a coil for receiving information such as magnetic security transmission (MST) And a coil for transmitting the magnetic field using a change of the magnetic field.

In FIG. 20, the coils of the coil part 200 are illustrated as having a quadrangular spiral shape. However, each of the coils of the coil part 200 may have various shapes.

FIG. 21 is a schematic view of a coil assembly including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300-4 according to an embodiment of the present invention includes a first magnetic member 111-3, A magnetic sheet 100-3 including a second magnetic member 112-3 and a sixth magnetic member 116 and a first coil 210-4 and a second coil 220-4, And a coil portion 200-4 including three coils 230-2.

Each of the first magnetic member 111-3, the second magnetic member 112-3 and the sixth magnetic member 116 includes the first magnetic member 111-3 and the second magnetic member 112 -3, and the sixth magnetic member 116, respectively.

Each of the first coil 210-4, the second coil 220-4 and the third coil 230-2 includes the first coil 210-3, the second coil 220-3, And the third coil 230-1, respectively.

By configuring the coil assembly as shown in Fig. 21, each of the plurality of coils can transmit and / or receive signals more efficiently.

22 is a schematic view of a coil assembly including a magnetic sheet according to an embodiment of the present invention. The coil assembly 300-5 according to an embodiment of the present invention includes a first magnetic member 111-10 and a second magnetic member 111-10. A magnetic substance sheet 100-10 including the second magnetic member 112-10 and a coil portion 210-2 including the first coil 210-5, the second coil 220-5, and the sensor 240 200-5).

Each of the first magnetic member 111-10 and the second magnetic member 112-10 is the same as the first magnetic member 111-10 and the second magnetic member 112-10 described in FIG.

Each of the first coil 210-5 and the second coil 220-5 is the same as the first coil 210 and the second coil 220 described with reference to FIG.

The sensor 240 senses the relative position between the first coil 210-5 that receives the wireless power and the transmission coil of the wireless power transmission device that transmits the wireless power.

As shown in FIG. 22, the sensor 240 may protrude from the substrate on which the coils are formed. In this case, by constructing as shown in Fig. 22, the coil assembly can be realized more compactly.

In Figs. 17 to 22, the coils of the coil part are shown as being formed on the surface where the coil part and the magnetic sheet are joined, but the coils may be formed on the surface of the coil part opposite to the surface to be bonded with the magnetic material sheet.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be obvious to those of ordinary skill in the art.

100, 100-1 to 100-11: magnetic substance sheet
111, 111-1 to 111-10, 111-111 to 111-113: a first magnetic member
112, 112-1 to 112-11: a second magnetic member
113-1, 113-2: third magnetic member 114: fourth magnetic member
115: fifth magnetic member 116: sixth magnetic member
120: second magnetic layer 130: third magnetic layer
141: seventh magnetic member 142: eighth magnetic member
151: ninth magnetic member 152: tenth magnetic member
161: eleventh magnetic member 162: twelfth magnetic member
191-1, 191-2, 191-3, 191-4, 191-5:
192-1, 192-2, 192-3, 192-4, and 191-5:
193-1, 193-2: third support layer 194: fourth support layer
195: fifth support layer 196: sixth support layer
197: Seventh base layer
200: coil part 210, 210-1, 210-2, 210-3: first coil
220, 220-1, 220-2, 220-3: a second coil
230-1, 230-2: third coil
300, 300-1, 300-2, 300-3, 300-4: coil assembly
400: Battery 500:
600: Case 710: Wireless power receiver
720:

Claims (37)

A first magnetic layer,
The first magnetic layer
A first magnetic member disposed in a first region of the first magnetic layer and including an amorphous material; And
And a second magnetic member disposed in a second region of the first magnetic layer not overlapping with the first region and including a ferrite sintered body.
The method according to claim 1,
Wherein the first region includes a central portion of the first magnetic layer, and the second region is located outside the first region.
The method according to claim 1,
And an adhesive layer disposed below the first magnetic layer and having a double-sided adhesive function, the adhesive layer fixing the first magnetic member and the second magnetic member.
The method according to claim 1,
And an outer layer disposed on the first magnetic layer and fixing the first magnetic member and the second magnetic member.
The method according to claim 1,
And a second magnetic layer disposed on the first magnetic layer and including an amorphous material.
The method according to claim 1,
And a second magnetic layer disposed on the first magnetic layer and having a magnetic permeability of 80 to 2000 in a frequency region of 110 kHz or more and 205 kHz or less.
The method according to claim 1,
And a second magnetic layer disposed on the first magnetic layer and having a magnetic permeability of 100 to 700 at a frequency of 6.78 MHz.
The method according to claim 1,
And a second magnetic layer disposed below the first magnetic layer and including an amorphous material.
The method according to claim 1,
And a second magnetic layer disposed at a lower portion of the first magnetic layer and having a magnetic permeability of 80 to 2000 in a frequency region of 110 kHz or more and 205 kHz or less.
The method according to claim 1,
And a second magnetic layer disposed at a lower portion of the first magnetic layer and having a magnetic permeability of 100 to 700 at a frequency of 6.78 MHz.
The magnetic recording medium according to claim 1, wherein the first magnetic layer
And a third magnetic member disposed in a third region not overlapping with the first region and the second region of the first magnetic layer and including a ferrite sintered body.
The method according to claim 1,
Wherein the thickness of the first magnetic member and the thickness of the second magnetic member are different from each other.
13. The method of claim 12,
And a plurality of said first magnetic members are laminated in said first region of said first magnetic layer.
Comprising a magnetic layer,
The magnetic layer
A first magnetic member disposed in the first region;
A second magnetic member disposed in a second region not overlapping with the first region and having a characteristic different from that of the first magnetic member; And
And a third magnetic member disposed in a third region that does not overlap with the first region and the second region, the third magnetic member having a characteristic different from that of the first magnetic member.
15. The method of claim 14,
Wherein the first region includes a central portion of the magnetic layer, and the second region and the third region are located outside the first region.
15. The magnetic head according to claim 14, wherein the first magnetic member
A magnetic sheet having a magnetic permeability of 80 to 2000 in a frequency range of 110 kHz to 205 kHz.
15. The magnetic head according to claim 14, wherein the first magnetic member
A magnetic sheet having a magnetic permeability of 100 to 700 at a frequency of 6.78 MHz.
15. The magnetic head according to claim 14, wherein the second magnetic member
A magnetic sheet having a permeability of 80 to 300 at a frequency of 13.56 MHz and a loss ratio of 1 to 20;
Comprising a magnetic layer,
The magnetic layer
A first magnetic member disposed in the first region; And
And a second magnetic member disposed in a second region that does not overlap with the first region, the second magnetic member having a characteristic and a thickness different from those of the first magnetic member.
Wherein the first magnetic layer is disposed in a first region of the first magnetic layer and includes a first magnetic member including an amorphous material and a second region not overlapping the first region of the first magnetic layer, A magnetic sheet including a second magnetic member disposed and including a ferrite sintered body; And
A first coil disposed in an area corresponding to the first area and transmitting or receiving a signal having a first frequency; a second coil disposed in an area corresponding to the second area and having a second frequency higher than the first frequency; And a coil portion that is bonded to the first surface of the magnetic sheet.
21. The method of claim 20,
Wherein the first coil is a coil for wireless power reception and the second coil is a coil for short-range communication.
21. The apparatus of claim 20, wherein the coil portion
A third coil disposed in an area corresponding to the first area and transmitting or receiving a signal having a third frequency lower than the second frequency and an average power lower than an average power of signals transmitted or received by the first coil, Further comprising a coil assembly.
21. The apparatus of claim 20, wherein the coil portion
And a third coil disposed in an area corresponding to the first area and transmitting information in a magnetic field form.
21. The magnetic element according to claim 20,
And a second magnetic layer disposed between the first magnetic layer and a second surface opposite to the first surface of the magnetic substance sheet.
21. The magnetic element according to claim 20,
And a second magnetic layer disposed between the first magnetic layer and the first surface of the magnetic substance sheet.
21. The method of claim 20,
Wherein the thickness of the first magnetic member is thinner than the thickness of the second magnetic member,
And a plurality of the first magnetic members are stacked in the first region of the first magnetic layer.
The magnetic layer including a first magnetic member disposed in a first region and a second magnetic member disposed in a second region not overlapping with the first region and having a characteristic different from that of the first magnetic member, A magnetic sheet including a third magnetic member disposed in a third region that does not overlap with the first region and the second region and has a characteristic different from that of the first magnetic member; And
And a coil portion including a first coil disposed in an area corresponding to the first area and a second coil disposed in an area corresponding to the second area.
28. The method of claim 27,
Wherein the first region includes a central portion of the magnetic layer and the second region and the third region are located outside the first region.
28. The method of claim 27,
Wherein the first coil transmits or receives a signal having a first frequency and the second coil transmits or receives a signal having a second frequency higher than the first frequency.
30. The magnetic element according to claim 29, wherein the first magnetic member
A coil assembly having a magnetic permeability of 80 to 2000 in a frequency range of 110 kHz to 205 kHz.
30. The magnetic element according to claim 29, wherein the first magnetic member
A coil assembly having a permeability of 100 to 700 at a frequency of 6.78 MHz.
30. The magnetic element according to claim 29, wherein the second magnetic member
A coil assembly having a permeability of 80 to 300 at a frequency of 13.56 MHz and a loss ratio of 1 to 20;
The magnetic recording medium according to claim 1, wherein the magnetic layer includes a first magnetic member disposed in a first region, and a second magnetic member disposed in a second region not overlapping with the first region, A magnetic sheet including a second magnetic member having a thickness smaller than the thickness; And
A first coil and a sensor disposed in a region corresponding to the first region, and a coil portion including a second coil disposed in an area corresponding to the second region.
Wherein the first magnetic layer is disposed in a first region of the first magnetic layer and includes a first magnetic member including an amorphous material and a second region not overlapping the first region of the first magnetic layer, A magnetic sheet including a second magnetic member disposed and including a ferrite sintered body;
A coil portion disposed in a region corresponding to the first region and receiving a radio power; and a coil portion disposed in an area corresponding to the second region and including a second coil for performing a short-range communication function;
A rectifier for rectifying the radio power to output a charging power;
A battery charged by the charging power; And
And a communication module that receives power from the battery and transmits and receives data through the second coil.
And a second magnetic member disposed in a second region of the same layer as the first magnetic member and not overlapping with the first region, the second magnetic member having a characteristic different from that of the first magnetic member, And a third magnetic member disposed in a third region that is not overlapped with the first region and the second region in the same layer as the first magnetic member and has a characteristic different from that of the first magnetic member, ;
A coil portion disposed in a region corresponding to the first region and receiving a radio power; and a coil portion disposed in an area corresponding to the second region and including a second coil for performing a short-range communication function;
A rectifier for rectifying the radio power to output a charging power;
A battery charged by the charging power; And
And a communication module that receives power from the battery and transmits and receives data through the second coil.
A first magnetic member is provided on the first sheet, and a second magnetic member having a characteristic different from that of the first magnetic member is provided on the second sheet. In the second sheet, Providing a three-magnetic member;
Providing a support layer for fixing the first magnetic member, the second magnetic member, and the third magnetic members; And
And attaching the first magnetic member, the second magnetic member, and the third magnetic member to the support layer.
37. The method of claim 36,
Attaching the second magnetic member to the support layer;
Attaching the third magnetic member to the support layer; And
And attaching the first magnetic member to the support layer.
KR1020150049837A 2015-01-30 2015-04-08 A coil assembly comprising a magnetic sheet, and an apparatus comprising the same KR101740785B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101971091B1 (en) * 2018-01-30 2019-04-22 엘지이노텍 주식회사 Antenna module includeing sheilding layer and wireless power receiving apparatus
WO2019135572A1 (en) * 2018-01-05 2019-07-11 삼성전자 주식회사 Electronic device and method for utilizing same as magnetic body
KR20190092317A (en) * 2018-01-30 2019-08-07 엘지이노텍 주식회사 Antenna module includeing sheilding layer and wireless power receiving apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140101665A (en) 2012-01-09 2014-08-20 주식회사 케이더파워 The reciving set for the wireless charging system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140101665A (en) 2012-01-09 2014-08-20 주식회사 케이더파워 The reciving set for the wireless charging system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019135572A1 (en) * 2018-01-05 2019-07-11 삼성전자 주식회사 Electronic device and method for utilizing same as magnetic body
KR20190083855A (en) * 2018-01-05 2019-07-15 삼성전자주식회사 Electronic device and method for using as magnetic substance thereof
KR101971091B1 (en) * 2018-01-30 2019-04-22 엘지이노텍 주식회사 Antenna module includeing sheilding layer and wireless power receiving apparatus
KR20190092317A (en) * 2018-01-30 2019-08-07 엘지이노텍 주식회사 Antenna module includeing sheilding layer and wireless power receiving apparatus
WO2019151746A1 (en) * 2018-01-30 2019-08-08 엘지이노텍 주식회사 Antenna module comprising shield layer and wireless power receiving device
US11569577B2 (en) 2018-01-30 2023-01-31 Lg Innotek Co., Ltd. Antenna module comprising shield layer and wireless power receiving device

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