WO2013169017A1 - 자성 시트, 자성 시트의 제조 방법, 및 자성 시트를 포함하는 안테나 - Google Patents
자성 시트, 자성 시트의 제조 방법, 및 자성 시트를 포함하는 안테나 Download PDFInfo
- Publication number
- WO2013169017A1 WO2013169017A1 PCT/KR2013/004055 KR2013004055W WO2013169017A1 WO 2013169017 A1 WO2013169017 A1 WO 2013169017A1 KR 2013004055 W KR2013004055 W KR 2013004055W WO 2013169017 A1 WO2013169017 A1 WO 2013169017A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- magnetic sheet
- material layer
- layer
- green sheets
- magnetic
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
-
- 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
- H01F41/02—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 manufacturing cores, coils, or magnets
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/32—Composite [nonstructural laminate] of inorganic material having metal-compound-containing layer and having defined magnetic layer
- Y10T428/325—Magnetic layer next to second metal compound-containing layer
Definitions
- the present invention relates to a magnetic sheet, a method for manufacturing a magnetic sheet, and an antenna including a magnetic sheet, and more particularly, a magnetic sheet capable of adjusting magnetic permeability through a different material layer, a method for manufacturing a magnetic sheet, and a magnetic sheet. It relates to an antenna.
- Magnetic materials are used for various electromagnetic shielding applications or EMI suppression of conductive wires, etc., and have a wide range of applications because they have various types and properties depending on the synthesis of materials. In recent years, magnetic materials have been used in RF components such as antennas, EMC cores, power inductors, and broadband transformers.
- Magnetic material may be manufactured in a thin sheet form.
- the magnetic sheet may be manufactured by various methods.
- One example is as follows. First, the powder is prepared by various methods such as a solid phase method and a wet method. Thereafter, the powder is mixed with a binder, a plasticizer, a dispersant, and the like to prepare a slurry. The mixed slurry is thinly applied using a doctor blade casting equipment or the like and then dried. The sheet completed until the drying step is generally referred to as a green sheet. The green sheet may then undergo a firing process. When baking, many green sheets may be laminated
- the reason why a magnetic body or a magnetic sheet is manufactured and used in an RF component or the like is that magnetic permeability is present in the magnetic body. Since the magnetic permeability value of a magnetic material generally depends on the components constituting the magnetic material and the manufacturing process, in order to change the permeability characteristics, a method of changing the components of the raw material itself or adjusting various heat treatment temperatures in the manufacturing process is used. come. In recent years, however, there has been an urgent need to develop technologies that can easily control the permeability.
- An object of the present invention is to provide a technique that can easily adjust the permeability value of the magnetic sheet by adding a process for forming a dissimilar material layer on the green sheet.
- a heterogeneous material layer in the magnetic sheet manufactured by laminating and firing a plurality of green sheets, may be formed after forming a heterogeneous material layer on at least one of both surfaces or a part of one surface of the plurality of green sheets. It provides a magnetic sheet characterized in that.
- the dissimilar material layer provides a magnetic sheet, characterized in that formed by applying a paste of a mixture of dissimilar material powder and an organic solvent.
- the dissimilar material layer, the magnetic sheet, characterized in that the cobalt component is characterized in that the cobalt component.
- the heterogeneous material layer provides a magnetic sheet, which is formed by applying cobalt paste to a partial region of both surfaces or one surface of at least one of the plurality of green sheets.
- the cobalt paste may be at least one of cobalt oxide (II) (CoO), cobalt oxide (III) (Co 2 O 3 ), cobalt oxide (IV) (CoO 2 ), and tricobalt tetraoxide (Co 3 O 4 ). It provides a magnetic sheet characterized in that and an organic solvent is mixed.
- the dissimilar material layer provides a method for producing a magnetic sheet, characterized in that formed by applying a paste mixed with a dissimilar material powder and an organic solvent.
- the dissimilar material layer, the cobalt component is provided, it provides a method for producing a magnetic sheet.
- the heterogeneous material layer may be formed by applying cobalt paste to a partial region of both surfaces or one surface of at least one of the plurality of green sheets.
- the cobalt paste may be at least one of cobalt oxide (II) (CoO), cobalt oxide (III) (Co 2 O 3 ), cobalt oxide (IV) (CoO 2 ), and tricobalt tetraoxide (Co 3 O 4 ). It provides a method for producing a magnetic sheet characterized in that and an organic solvent is mixed.
- a magnetic sheet is attached to the magnetic sheet, but is attached to the first radiator and the magnetic sheet attached to a surface on which the area on which the dissimilar material layer is formed is attached, and the dissimilar material layer is formed.
- An antenna is provided that includes a second radiator attached to a surface on which a non-region is projected.
- a heterogeneous material layer is formed on both surfaces or one surface of at least one of the plurality of green sheets, and then laminated,
- the material layer may be formed on a first layer formed on at least one surface of at least one of the plurality of green sheets or at a portion of one surface of the plurality of green sheets, and at a partial region where the first layer is not formed on at least one surface of at least one of the plurality of green sheets.
- a second layer having a component different from the components constituting the first layer.
- the dissimilar material layer provides a magnetic sheet, characterized in that formed by applying a paste of a mixture of dissimilar material powder and an organic solvent.
- the manufacturing method of manufacturing a magnetic sheet formed by laminating and baking a plurality of green sheets before laminating the plurality of green sheets, at least one or both surfaces or one surface of the plurality of green sheets. And forming a dissimilar material layer in the dissimilar material layer, wherein the dissimilar material layer is formed on at least one side of at least one of the plurality of green sheets or at least one side of at least one of the plurality of green sheets. Or a second layer having a component different from a component constituting the first layer and formed on a portion of the surface where the first layer is not formed.
- the dissimilar material layer provides a method for producing a magnetic sheet, characterized in that formed by applying a paste mixed with a dissimilar material powder and an organic solvent.
- a magnetic sheet, a first radiator attached to the magnetic sheet and attached to the surface on which the area on which the first layer is formed is attached to the magnetic sheet, and attached to the surface on which the area on which the second layer is formed is projected It provides an antenna comprising a second radiator.
- the magnetic permeability value of the magnetic sheet can be easily adjusted.
- the permeability value may be different only in a part of the magnetic sheet.
- FIG. 1 is a perspective view showing a magnetic sheet according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view illustrating the magnetic sheet according to the first embodiment of the present invention separated from the green sheet prior to lamination.
- FIG 3 is a graph showing the magnetic permeability value of the magnetic sheet according to an embodiment of the present invention.
- FIG. 4 is a flowchart illustrating a method of manufacturing a magnetic sheet according to an embodiment of the present invention.
- FIG. 5 is a plan view illustrating an example of a magnetic sheet and an antenna including the same according to the first exemplary embodiment of the present invention.
- FIG. 6 is an exploded perspective view showing a magnetic sheet separated from a green sheet before being laminated according to a second exemplary embodiment of the present invention.
- FIG. 7 is a plan view illustrating an example of a magnetic sheet and an antenna including the same according to a second exemplary embodiment of the present invention.
- FIG. 8 is an exploded perspective view illustrating a magnetic sheet separated into a state before lamination of a green sheet according to various embodiments of the present disclosure.
- FIG. 9 is a view for explaining the magnetic permeability value of the magnetic sheet according to the third embodiment of the present invention.
- FIG. 10 is a plan view illustrating an example of a magnetic sheet and an antenna including the same according to a fourth exemplary embodiment of the present invention.
- FIG. 1 is a perspective view showing a magnetic sheet according to an embodiment of the present invention.
- the magnetic sheet 100 may be manufactured in a multilayer form by laminating and firing a plurality of green sheets 10.
- the plurality of green sheets 10 to be laminated are generally the same type of material.
- the magnetic sheet 100 has been manufactured by preselecting any one of components such as Ni-Zn ferrite, Mn-Zn ferrite, Ni-Zn-Cu ferrite, etc. according to the intention of the manufacturer.
- a technique of laminating heterogeneous green sheets 10 without laminating only homogeneous green sheets 10 may be considered. That is, the permeability can be adjusted by stacking heterogeneous green sheets 10 having different permeability values, changing the stacking order, or changing the type of the stacked green sheets 10.
- the green sheets 10 made of different materials are laminated to each other and fired, there is a problem in that the process for joining is difficult and the process is complicated due to the difference in shrinkage. Therefore, the idea of manufacturing the magnetic sheet 100 by stacking heterogeneous green sheets 10 is simple, but there have been various difficulties in actual implementation.
- the magnetic sheet 100 according to an embodiment of the present invention is intended to solve the above-mentioned difficulties, and will be described in detail below with reference to the embodiments.
- the magnetic sheet 100 according to the first embodiment of the present invention is manufactured by partially forming a heterogeneous material layer 20 on at least one of the plurality of green sheets 10 and then laminating and baking the same. That is, before stacking the plurality of green sheets 10, the heterogeneous material layer 20 is first formed in some regions of both surfaces or one surface of at least one of the plurality of green sheets 10, and then the plurality of green sheets. The sheet 10 is laminated and then fired.
- the heterogeneous material layer 20 is formed on a portion of the upper surface of the green sheet 10. Since the heterogeneous material layer 20 is formed on at least one of the plurality of green sheets 10, the hetero material layer 20 does not have to be formed on only one green sheet 10. That is, the heterogeneous material layer 20 may be formed on one or more green sheets 10. In addition, the heterogeneous material layer 20 is formed on both surfaces or one surface of the green sheet 10, but is formed only on the upper surface in FIG. 2, but may be formed on the entire upper or lower surface or only on the lower surface.
- the magnetic permeability of the finally obtained magnetic sheet 100 may be partially adjusted. That is, the magnetic permeability is measured differently on the surface on which the region on which the dissimilar material layer 20 is formed is projected and on the surface that is not. Therefore, such a structure may be utilized to implement different permeability characteristics within one magnetic sheet 100.
- the heterogeneous material layer 20 may be formed by applying a paste. Specifically, a paste obtained by mixing a powder of a different material from that of the green sheet 10 to be coated with an organic solvent may be applied. In this case, the coating means coating on one or both surfaces of the green sheet 10, and may be applied using a printing method such as a silk screen.
- the dissimilar material powder component naturally penetrates into the magnetic sheet 100 and diffuses during the heat treatment process.
- the magnetic permeability of the magnetic sheet 100 is controlled by the diffused dissimilar material component. Therefore, it is preferable to select an organic solvent effective for the diffusion of different materials to prepare a paste.
- a method of controlling the type or content of the components included in the dissimilar material layer 20 may be used.
- only controlling the thickness of the dissimilar material layer 20 has an effect of finely adjusting the permeability.
- the heterogeneous material layer 20 may be adjusted by changing the number of coatings.
- the heterogeneous material layer 20 may include a cobalt (Co) component.
- Co cobalt
- a portion indicated by A in FIG. 3 is a magnetic permeability of the magnetic sheet 100 that does not form the heterogeneous material layer 20 and has a permeability value of about 20 in a 10-100 MHz section.
- the portion B denotes a magnetic permeability of the magnetic sheet 100 having the heterogeneous material layer 20 including the cobalt component, and has a magnetic permeability value of about 5. In other words, it can be confirmed through experiments that B has a lower permeability value than A.
- a method of applying a cobalt paste in order to include the cobalt component may be applied.
- the cobalt paste is selected or combined with at least one of cobalt (II) oxide (CoO), cobalt oxide (III) oxide (Co 2 O 3 ), cobalt oxide (IV) (CoO 2 ), tricobalt tetraoxide (Co 3 O 4 ).
- the coating means coating on one or both surfaces of the green sheet 10, and may be applied using a printing method such as a silk screen.
- the cobalt component When the cobalt paste is used, the cobalt component naturally penetrates into the magnetic sheet 100 and diffuses during the heat treatment process of the stacked green sheets 10.
- the magnetic permeability of the magnetic sheet 100 is controlled by the diffused cobalt component. Therefore, it is preferable to select an organic solvent effective for the diffusion of the cobalt powder to produce a cobalt paste.
- the heterogeneous material layer 20 in the present invention does not always have to include a cobalt component. That is, it will be said that it is also within the scope of the present invention to apply so that other components other than cobalt components may be included in the heterogeneous material layer 20.
- different types of ferrite may be applied in the form of a paste different from the green sheet 10 to form a dissimilar material layer 20, or a paste may be manufactured using a metal powder other than cobalt. This application may be variously modified according to the design intention of the magnetic sheet maker.
- a magnetic powder is prepared (S100), and a slurry is prepared by mixing the prepared magnetic powder with a binder, a plasticizer, a dispersant, and the like (S200).
- a slurry is prepared by mixing the prepared magnetic powder with a binder, a plasticizer, a dispersant, and the like (S200).
- the magnetic powder Ni-Zn ferrite, Mn-Zn ferrite, Ni-Zn-Cu ferrite, or the like may be used.
- the present invention is not limited thereto, and other types of magnetic powder may be used according to the intention of the manufacturer.
- the mixed slurry is processed into a green sheet 10 by using a doctor blade casting (Doctor Blade Casting) equipment (S300).
- a step (S400) of forming a heterogeneous material layer 20 on both surfaces or one surface of at least one of the plurality of green sheets 10 is included.
- the heterogeneous material layer 20 is formed, after stacking a plurality of green sheets 10 (S500) and firing them (S600), the magnetic sheet 100 may be completed.
- the dissimilar material layer 20 is formed only on a part of the green sheet 10. It can be formed.
- the description of the dissimilar material layer 20 formed only in a partial region is as described above.
- a cobalt (Co) component cobalt (II) oxide (CoO), cobalt oxide (III) (Co 2 O 3 )
- cobalt paste prepared by selecting or combining at least one of cobalt oxide (IV) (CoO 2 ) and tricobalt tetraoxide (Co 3 O 4 ) may be applied, a detailed description thereof will be omitted. Shall be.
- the antenna will be described as an application for utilizing the magnetic sheet according to the first embodiment of the present invention.
- FIG. 5 (a) is a plan view showing a magnetic sheet according to the first embodiment of the present invention
- Figure 5 (b) is a plan view showing an example of an antenna including a magnetic sheet according to the first embodiment of the present invention to be.
- the magnetic sheet-attached antenna properties such as a resonant frequency, a gain, and a bandwidth change according to the magnetic permeability of the magnetic sheet 100.
- NFC Near Field Communication
- a plurality of radiators may be attached to one magnetic sheet 100. Multiple radiators may be attached to operate in different frequency bands or to implement operations of different functions.
- the magnetic sheet 100 may be required to have different permeability values in order for each radiator to operate optimally. Because the magnetic permeability and permeability values of the magnetic sheet vary with frequency bands, they provide an unsuitable environment for other radiators operating in the second frequency band, even if the environment is suitable for radiators operating in any one of the first frequency bands. This can happen.
- the magnetic sheet 100 may be divided into a region 110 in which a heterogeneous material layer is formed and a region 120 in which a heterogeneous material layer is not formed.
- the magnetic sheet 100 may be divided into a plane projecting the region 110 in which the heterogeneous material layer is formed and a plane projecting the region 120 in which the heterogeneous material layer is not formed.
- an example of an antenna including the magnetic sheet 100, the first radiator 210, and the second radiator 220 according to the first embodiment is provided.
- the first radiator 210 is attached to a surface of the magnetic sheet 100 on which the region 110 on which the heterogeneous material layer is formed is projected.
- the second radiator 220 is attached to a surface of the magnetic sheet 100 on which the region 120 on which the heterogeneous material layer is not formed is projected.
- the magnetic permeability values of the magnetic sheet 100 to be applied to the first radiator 210 and the second radiator 220 may be independently selected.
- the region 110 in which the heterogeneous material layer is formed may have various shapes and may be formed at various positions. As shown in FIG. 5, the region 110 in which the heterogeneous material layer is formed may have a rectangular shape and be formed to be close to half of the entire region. Alternatively, the region 110 in which the heterogeneous material layer is formed may be disposed in the center of the green sheet, and the region 120 in which the heterogeneous material layer is not formed may be divided into a shape surrounding the same. These shapes are merely exemplary and can be modified in various shapes according to the intention of the antenna designer.
- the first radiator 210 and the second radiator 220 may also have various shapes, such as a spiral shape, a meander shape, and a loop shape, according to the intention of the antenna designer.
- the first radiator 210 and the second radiator 220 operate as radiators of the antenna, and may be used in different applications and different frequency bands, or may be used in the same application and in the same frequency band.
- the first radiator 210 may be used as a radiator for NFC
- the second radiator 220 may be used as a radiator for wireless charging.
- the use may be changed between the first and second radiators 210 and 220. However, these uses are merely exemplary and may be changed in various forms according to the intention of the antenna designer.
- the magnetic sheet 100 according to the second embodiment of the present invention is manufactured by forming a heterogeneous material layer 20 on at least one of the plurality of green sheets 10 and then laminating and baking the same. That is, before stacking the plurality of green sheets 10, the heterogeneous material layer 20 is first formed in some regions of both surfaces or one surface of at least one of the plurality of green sheets 10, and then the plurality of green sheets. The sheet 10 is laminated and then fired.
- the heterogeneous material layer 20 includes a first layer 21 and a second layer 22.
- the first layer 21 is formed in a partial region of both surfaces or one surface of at least one of the plurality of green sheets 10, and the second layer 22 is formed in a partial region in which the first layer 21 is not formed. Will be.
- the components constituting the first layer 21 and the second layer 22 are different from each other.
- FIG. 6 is an exploded perspective view showing the magnetic sheet according to the second embodiment of the present invention, it is confirmed that the first layer 21 and the second layer 22 is formed in a portion of the upper surface of the green sheet 10. Can be. Since the first layer 21 and the second layer 22 are formed on at least one of the plurality of green sheets 10, the first layer 21 and the second layer 22 need not be formed on only one green sheet 10. That is, it may be formed on one or more green sheets 10. In addition, it is formed on both sides or one surface of the green sheet 10, but is formed only on the upper surface in Figure 6, it may be formed on the entire upper or lower surface, or may be formed only on the lower surface.
- the magnetic permeability of the finally obtained magnetic sheet 100 may be partially adjusted.
- the permeability is measured differently on the surface on which the area on which the first layer 21 is formed is projected and on the surface on which the area on which the second layer 22 is formed is projected. Therefore, such a structure may be utilized to implement different permeability characteristics within one magnetic sheet 100.
- the heterogeneous material layer 20 may be formed by applying a paste. Since the application and the detailed description thereof have been sufficiently described in the first embodiment, detailed description thereof will be omitted herein.
- a magnetic powder is prepared (S100), and a slurry is prepared by mixing the prepared magnetic powder with a binder, a plasticizer, a dispersant, and the like (S200).
- a slurry is prepared by mixing the prepared magnetic powder with a binder, a plasticizer, a dispersant, and the like (S200).
- the magnetic powder Ni-Zn ferrite, Mn-Zn ferrite, Ni-Zn-Cu ferrite, or the like may be used.
- the present invention is not limited thereto, and other types of magnetic powder may be used according to the intention of the manufacturer.
- the mixed slurry is processed into a green sheet 10 by using a doctor blade casting (Doctor Blade Casting) equipment (S300).
- a step (S400) of forming a heterogeneous material layer 20 on both surfaces or one surface of at least one of the plurality of green sheets 10 is included.
- the heterogeneous material layer 20 is formed, after stacking a plurality of green sheets 10 (S500) and firing them (S600), the magnetic sheet 100 may be completed.
- the first layer 21 and the second layer 22 are formed, respectively. Just do it. Since the description of the structure in which the first layer 21 and the second layer 22 are separately formed is as described above, a detailed description thereof will be omitted.
- the antenna will be described as an application for utilizing the magnetic sheet according to the second embodiment of the present invention.
- Figure 7 (a) is a plan view showing a magnetic sheet according to a second embodiment of the present invention
- Figure 7 (b) is a plan view showing an example of an antenna including a magnetic sheet according to a second embodiment of the present invention to be.
- the magnetic sheet attached antenna may attach a plurality of radiators to operate in different frequency bands or to implement operations of different functions.
- the magnetic sheet 100 may be required to have different permeability values in order for each radiator to operate optimally. Because the magnetic permeability and permeability values of the magnetic sheet vary with frequency bands, they provide an unsuitable environment for other radiators operating in the second frequency band, even if the environment is suitable for radiators operating in any one of the first frequency bands. This can happen.
- the magnetic sheet 100 according to the second embodiment of the present invention may be divided into an area 130 in which a first layer is formed and an area 140 in which a second layer is formed. . That is, based on the plan view, the magnetic sheet 100 may be divided into a plane projecting the region 130 on which the first layer is formed and a plane projecting the region 140 on which the second layer is formed.
- an example of an antenna including the magnetic sheet 100, the first radiator 230, and the second radiator 240 according to the second embodiment is provided.
- the first radiator 230 is attached to a surface of the magnetic sheet 100 that projects the region 130 on which the first layer is formed.
- the second radiator 240 is attached to the surface of the magnetic sheet 100 on which the region 140 on which the second layer is formed is projected.
- the magnetic permeability value of the magnetic sheet 100 to be applied to the first radiator 230 and the second radiator 240 may be independently selected.
- the number and shape of the radiators may be changed according to the intention of the designer.
- the shape and position of the region 130 in which the first layer is formed and the region 140 in which the second layer is formed may be naturally changed according to the intention of the designer.
- other regions except for the region 130 in which the first layer is formed and the region 140 in which the second layer is formed may be used as a third region having different permeability values. That is, it is natural that a magnetic sheet having a structure combining the first and second embodiments can also be produced.
- FIG. 8 is an exploded perspective view illustrating a magnetic sheet separated into a state before lamination of a green sheet according to various embodiments of the present disclosure.
- the magnetic sheet may be manufactured in a form consisting of one heterogeneous material layer (Single Function Sheet), two forms (Dual Function Sheet), four forms (Quad Function Sheet), or the like. They are functionally separated to implement different permeability values, but may be referred to as a multi-function one body sheet because they are structurally included in one sheet.
- FIG. 9 there is shown a diagram for explaining a magnetic permeability value of a magnetic sheet according to a third embodiment of the present invention.
- the permeability variation of each region shows different characteristics.
- four areas having different permeability values from frequencies can be secured.
- the graph shown in FIG. 9 since all four graphs are displayed as curves having different shapes, there is an advantage in that the sheet may be used to have a different purpose for each region.
- FIG. 10 is a plan view illustrating an example of a magnetic sheet and an antenna including the same according to a fourth exemplary embodiment of the present invention, and provides another structure applicable to a product.
- an antenna operating in various service bands such as wireless charging, NFC, FM, T-DMB, and the like is provided.
- the electrical length of the antenna must be changed according to the operating frequency band, and the magnetic permeability value of the magnetic sheet must be partially different according to the frequency band of each antenna.
- antennas having different electrical lengths and shapes may be provided, respectively, and the magnetic sheet region to which each antenna is attached may have different material layers so as to have different permeability.
- the heterogeneous material layer is preferably composed of n different layers.
- the technical features of the present invention are not limited thereto, and modifications may be made such that some antennas having similar operating frequency bands share one layer. Also, if one antenna radiator is to operate in two or more service bands, a modification may be possible in which one antenna radiator is in contact with two or more layers.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Soft Magnetic Materials (AREA)
- Hard Magnetic Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Compounds Of Iron (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims (16)
- 다수의 그린 시트를 적층 후 소성하여 제조하는 자성 시트에 있어서,상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면의 일부 영역에 이종 소재 레이어를 형성한 후 적층하는 것을 특징으로 하는 자성 시트.
- 제1항에 있어서, 상기 이종 소재 레이어는,이종 소재 분말 및 유기 용제를 혼합한 페이스트를 도포하여 형성되는 것을 특징으로 하는 자성 시트.
- 제1항에 있어서, 상기 이종 소재 레이어에는,코발트 성분이 포함되는 것을 특징으로 하는 자성 시트.
- 제3항에 있어서, 상기 이종 소재 레이어는,상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면의 일부 영역에 코발트 페이스트를 도포하여 형성되는 것을 특징으로 하는 자성 시트.
- 제4항에 있어서, 상기 코발트 페이스트는,산화코발트(Ⅱ)(CoO), 산화코발트(Ⅲ)(Co2O3), 산화코발트(Ⅳ)(CoO2), 사산화삼코발트(Co3O4) 중 적어도 어느 하나와 유기 용제가 혼합된 것을 특징으로 하는 자성 시트.
- 다수의 그린 시트를 적층 후 소성하여 형성하는 자성 시트의 제조 장법에 있어서,상기 다수의 그린 시트를 적층하기 전에, 상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면의 일부 영역에 이종 소재 레이어를 형성하는 단계를 포함하는 자성 시트의 제조 방법.
- 제6항에 있어서, 상기 이종 소재 레이어는,이종 소재 분말 및 유기 용제를 혼합한 페이스트를 도포하여 형성되는 것을 특징으로 하는 자성 시트의 제조 방법.
- 제6항에 있어서, 상기 이종 소재 레이어에는,코발트 성분이 포함되는 것을 특징으로 하는 자성 시트의 제조 방법.
- 제8항에 있어서, 상기 이종 소재 레이어는,상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면의 일부 영역에 코발트 페이스트를 도포하여 형성되는 것을 특징으로 하는 자성 시트의 제조 방법.
- 제9항에 있어서, 상기 코발트 페이스트는,산화코발트(Ⅱ)(CoO), 산화코발트(Ⅲ)(Co2O3), 산화코발트(Ⅳ)(CoO2), 사산화삼코발트(Co3O4) 중 적어도 어느 하나와 유기 용제가 혼합된 것을 특징으로 하는 자성 시트의 제조 방법.
- 제1항 또는 제2항에 따른 자성 시트;상기 자성 시트에 부착되되, 상기 이종 소재 레이어가 형성된 영역을 투영한 면에 부착되는 제1 방사체; 및상기 자성 시트에 부착되되, 상기 이종 소재 레이어가 형성되지 않은 영역을 투영한 면에 부착되는 제2 방사체를 포함하는 안테나.
- 다수의 그린 시트를 적층 후 소성하여 제조하는 자성 시트에 있어서,상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면에 이종 소재 레이어를 형성한 후 적층하되,상기 이종 소재 레이어는,상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면의 일부 영역에 형성되는 제1 레이어; 및상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면 중 상기 제1 레이어가 형성되지 않은 일부 영역에 형성되며, 상기 제1 레이어를 구성하는 성분과 상이한 성분의 제2 레이어를 포함하는 것을 특징으로 하는 자성 시트.
- 제12항에 있어서, 상기 이종 소재 레이어는,이종 소재 분말 및 유기 용제를 혼합한 페이스트를 도포하여 형성되는 것을 특징으로 하는 자성 시트.
- 다수의 그린 시트를 적층 후 소성하여 형성하는 자성 시트의 제조 장법에 있어서,상기 다수의 그린 시트를 적층하기 전에, 상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면에 이종 소재 레이어를 형성하는 단계를 포함하되,상기 이종 소재 레이어는,상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면의 일부 영역에 형성되는 제1 레이어; 및상기 다수의 그린 시트 중 적어도 하나의 양면 또는 일면 중 상기 제1 레이어가 형성되지 않은 일부 영역에 형성되며, 상기 제1 레이어를 구성하는 성분과 상이한 성분의 제2 레이어를 포함하는 것을 특징으로 하는 자성 시트의 제조 방법.
- 제14항에 있어서, 상기 이종 소재 레이어는,이종 소재 분말 및 유기 용제를 혼합한 페이스트를 도포하여 형성되는 것을 특징으로 하는 자성 시트의 제조 방법.
- 제12항 또는 제13항에 따른 자성 시트;상기 자성 시트에 부착되되, 상기 제1 레이어가 형성된 영역을 투영한 면에 부착되는 제1 방사체; 및상기 자성 시트에 부착되되, 상기 제2 레이어가 형성된 영역을 투영한 면에 부착되는 제2 방사체를 포함하는 안테나.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380024588.8A CN104380850B (zh) | 2012-05-10 | 2013-05-09 | 磁片、磁片的制造方法及包含磁片的天线 |
JP2015511364A JP2015524162A (ja) | 2012-05-10 | 2013-05-09 | 磁性シート、磁性シートの製造方法、及び磁性シートを備えたアンテナ |
US14/400,048 US10049799B2 (en) | 2012-05-10 | 2013-05-09 | Magnetic sheet, method for manufacturing magnetic sheet and antenna comprising the magnetic sheet |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2012-0049542 | 2012-05-10 | ||
KR10-2012-0049525 | 2012-05-10 | ||
KR1020120049525A KR101372925B1 (ko) | 2012-05-10 | 2012-05-10 | 자성 시트 및 그 제조 방법 |
KR1020120049542A KR101372936B1 (ko) | 2012-05-10 | 2012-05-10 | 자성 시트, 자성 시트의 제조 방법, 및 자성 시트를 포함하는 안테나 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013169017A1 true WO2013169017A1 (ko) | 2013-11-14 |
Family
ID=49550980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2013/004055 WO2013169017A1 (ko) | 2012-05-10 | 2013-05-09 | 자성 시트, 자성 시트의 제조 방법, 및 자성 시트를 포함하는 안테나 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10049799B2 (ko) |
JP (1) | JP2015524162A (ko) |
CN (1) | CN104380850B (ko) |
WO (1) | WO2013169017A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10049799B2 (en) | 2012-05-10 | 2018-08-14 | Emw Co., Ltd. | Magnetic sheet, method for manufacturing magnetic sheet and antenna comprising the magnetic sheet |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101762778B1 (ko) | 2014-03-04 | 2017-07-28 | 엘지이노텍 주식회사 | 무선 충전 및 통신 기판 그리고 무선 충전 및 통신 장치 |
US9955614B2 (en) * | 2015-05-22 | 2018-04-24 | Samsung Electro-Mechanics Co., Ltd. | Sheet for shielding against electromagnetic waves and wireless power charging device |
US10028420B2 (en) * | 2015-05-22 | 2018-07-17 | Samsung Electro-Mechanics Co., Ltd. | Sheet for shielding against electromagnetic waves and wireless power charging device |
TW201709236A (zh) * | 2015-08-26 | 2017-03-01 | 鴻準精密工業股份有限公司 | 線圈載板的製造方法 |
US10847874B2 (en) | 2015-10-23 | 2020-11-24 | Amotech Co., Ltd. | Vehicle antenna module |
KR101732944B1 (ko) * | 2015-11-11 | 2017-05-08 | 주식회사 이엠따블유 | 복합 페라이트 자기장 차폐시트, 이의 제조방법 및 이를 이용한 안테나 모듈 |
KR102175378B1 (ko) * | 2018-03-13 | 2020-11-06 | 주식회사 아모센스 | 대면적형 복합 자기장 차폐시트 및 이를 포함하는 무선전력 전송모듈 |
KR102650861B1 (ko) * | 2019-09-03 | 2024-03-26 | 삼성전자 주식회사 | 나선형 안테나를 포함하는 전자 장치 |
CN117941017A (zh) * | 2021-09-17 | 2024-04-26 | 美国圣戈班性能塑料公司 | 磁性多层复合材料及其形成方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001284878A (ja) * | 2000-04-04 | 2001-10-12 | Tokin Corp | 配線基板 |
KR20060102283A (ko) * | 2005-03-22 | 2006-09-27 | 가부시끼가이샤 도시바 | 안테나 장치 그리고 안테나 장치를 제조하는 방법 |
JP2008194865A (ja) * | 2007-02-09 | 2008-08-28 | Matsushita Electric Ind Co Ltd | シート状成形体その製造方法 |
KR100909172B1 (ko) * | 2008-12-15 | 2009-07-23 | 주식회사화인인더스트리 | 자력을 이용한 엠보시트 및 그 제조방법 |
JP2009259933A (ja) * | 2008-04-15 | 2009-11-05 | Panasonic Corp | 磁性シートおよびその製造方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5239744A (en) * | 1992-01-09 | 1993-08-31 | At&T Bell Laboratories | Method for making multilayer magnetic components |
JP3114323B2 (ja) * | 1992-01-10 | 2000-12-04 | 株式会社村田製作所 | 積層チップコモンモードチョークコイル |
JPH0969717A (ja) * | 1995-09-01 | 1997-03-11 | Murata Mfg Co Ltd | チップアンテナ |
JPH1126295A (ja) * | 1997-06-30 | 1999-01-29 | Taiyo Yuden Co Ltd | 積層チップ部品 |
US6190516B1 (en) * | 1999-10-06 | 2001-02-20 | Praxair S.T. Technology, Inc. | High magnetic flux sputter targets with varied magnetic permeability in selected regions |
JP2002204072A (ja) * | 2000-12-28 | 2002-07-19 | Sanyo Electric Co Ltd | 複合積層セラミック基板およびその製造方法 |
US6660412B2 (en) * | 2001-03-15 | 2003-12-09 | Waseem A. Roshen | Low loss, high frequency composite magnetic material and methods of making the same |
JP3801020B2 (ja) * | 2001-11-02 | 2006-07-26 | 松下電器産業株式会社 | 同調アンテナ |
JP3744859B2 (ja) * | 2002-02-01 | 2006-02-15 | 三洋電機株式会社 | 成形体及びその製造方法 |
US6835463B2 (en) * | 2002-04-18 | 2004-12-28 | Oakland University | Magnetoelectric multilayer composites for field conversion |
US6753814B2 (en) * | 2002-06-27 | 2004-06-22 | Harris Corporation | Dipole arrangements using dielectric substrates of meta-materials |
JP2006016280A (ja) * | 2004-07-05 | 2006-01-19 | Neomax Co Ltd | Ni−Cu−Znフェライトおよびその製造方法 |
JP2009225608A (ja) * | 2008-03-18 | 2009-10-01 | Nitto Denko Corp | モータ用永久磁石及びモータ用永久磁石の製造方法 |
US9093853B2 (en) * | 2008-09-27 | 2015-07-28 | Witricity Corporation | Flexible resonator attachment |
US9685186B2 (en) * | 2009-02-27 | 2017-06-20 | Applied Materials, Inc. | HDD pattern implant system |
US8725263B2 (en) * | 2009-07-31 | 2014-05-13 | Medtronic, Inc. | Co-fired electrical feedthroughs for implantable medical devices having a shielded RF conductive path and impedance matching |
JP2012010045A (ja) * | 2010-06-24 | 2012-01-12 | Mitsumi Electric Co Ltd | スパイラルアンテナ |
JP5835235B2 (ja) * | 2011-01-24 | 2015-12-24 | 日立金属株式会社 | マグネトロンスパッタリング用磁場発生装置 |
US8268461B1 (en) * | 2011-03-16 | 2012-09-18 | Hitachi Global Storage Technologies Netherlands B.V. | Patterned perpendicular magnetic recording medium with ultrathin oxide film and reduced switching field distribution |
CN104380850B (zh) | 2012-05-10 | 2019-04-12 | Emw有限公司 | 磁片、磁片的制造方法及包含磁片的天线 |
KR101963260B1 (ko) * | 2012-12-21 | 2019-03-28 | 삼성전기주식회사 | 적층형 페라이트 시트, 이를 이용한 안테나 장치 및 그 제조 방법 |
-
2013
- 2013-05-09 CN CN201380024588.8A patent/CN104380850B/zh not_active Expired - Fee Related
- 2013-05-09 US US14/400,048 patent/US10049799B2/en active Active
- 2013-05-09 WO PCT/KR2013/004055 patent/WO2013169017A1/ko active Application Filing
- 2013-05-09 JP JP2015511364A patent/JP2015524162A/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001284878A (ja) * | 2000-04-04 | 2001-10-12 | Tokin Corp | 配線基板 |
KR20060102283A (ko) * | 2005-03-22 | 2006-09-27 | 가부시끼가이샤 도시바 | 안테나 장치 그리고 안테나 장치를 제조하는 방법 |
JP2008194865A (ja) * | 2007-02-09 | 2008-08-28 | Matsushita Electric Ind Co Ltd | シート状成形体その製造方法 |
JP2009259933A (ja) * | 2008-04-15 | 2009-11-05 | Panasonic Corp | 磁性シートおよびその製造方法 |
KR100909172B1 (ko) * | 2008-12-15 | 2009-07-23 | 주식회사화인인더스트리 | 자력을 이용한 엠보시트 및 그 제조방법 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10049799B2 (en) | 2012-05-10 | 2018-08-14 | Emw Co., Ltd. | Magnetic sheet, method for manufacturing magnetic sheet and antenna comprising the magnetic sheet |
Also Published As
Publication number | Publication date |
---|---|
CN104380850A (zh) | 2015-02-25 |
CN104380850B (zh) | 2019-04-12 |
JP2015524162A (ja) | 2015-08-20 |
US10049799B2 (en) | 2018-08-14 |
US20150109179A1 (en) | 2015-04-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2013169017A1 (ko) | 자성 시트, 자성 시트의 제조 방법, 및 자성 시트를 포함하는 안테나 | |
US7196607B2 (en) | Embedded toroidal transformers in ceramic substrates | |
KR101513954B1 (ko) | 적층 인덕터 및 이것을 사용한 전력 변환 장치 | |
WO2009113775A2 (ko) | 연자성 금속분말이 충전된 시트를 이용한 적층형 파워 인덕터 | |
WO2017069581A1 (ko) | 차량용 안테나 모듈 | |
WO2017082553A1 (ko) | 복합 페라이트 자기장 차폐시트, 이의 제조방법 및 이를 이용한 안테나 모듈 | |
WO2019151746A1 (ko) | 차폐층을 포함하는 안테나 모듈 및 무선 전력 수신 장치 | |
WO2017074104A1 (ko) | 무선전력 전송용 자기장 차폐시트 및 이를 포함하는 무선전력 수신모듈 | |
WO2018151491A1 (ko) | 자성코어, 인덕터 및 이를 포함하는 emi 필터 | |
WO2019132413A1 (ko) | 자성코어, 인덕터 및 이를 포함하는 emi 필터 | |
WO2018043943A1 (ko) | 복합 자성 입자 및 그의 제조 방법 | |
US20190164677A1 (en) | Electronic component | |
KR20130025835A (ko) | 페라이트 자기 조성물, 세라믹 전자 부품, 및 세라믹 전자 부품의 제조 방법 | |
KR101372936B1 (ko) | 자성 시트, 자성 시트의 제조 방법, 및 자성 시트를 포함하는 안테나 | |
WO2019054777A1 (ko) | 자기장 차폐시트 및 이를 포함하는 무선전력 전송모듈 | |
WO2015041447A1 (ko) | 임베디드용 적층 세라믹 캐패시터 및 임베디드용 적층 세라믹 캐패시터의 제조 방법 | |
JPH033395A (ja) | セラミック多層配線基板 | |
JP2020083731A (ja) | フェライトシート及びそれを用いたコイルモジュール | |
JP3602298B2 (ja) | 薄型電源用磁気素子 | |
US6717794B2 (en) | Composite multilayered ceramic board and manufacturing method thereof | |
WO2019177357A1 (ko) | 무선전력 수신모듈 및 이를 포함하는 휴대용 전자기기 | |
WO2017018704A1 (ko) | 전자파 차폐 및 열방출 기능을 갖는 시트 및 이를 포함하는 복합체 | |
JPH05121241A (ja) | インダクタンス部品およびその製造方法 | |
KR101372925B1 (ko) | 자성 시트 및 그 제조 방법 | |
JPH05121240A (ja) | インダクタンス部品およびその製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13787386 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015511364 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14400048 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13787386 Country of ref document: EP Kind code of ref document: A1 |