CN109193961B - A ultra-thin receiving terminal module of high efficiency for wireless charging - Google Patents
A ultra-thin receiving terminal module of high efficiency for wireless charging Download PDFInfo
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- CN109193961B CN109193961B CN201811379001.6A CN201811379001A CN109193961B CN 109193961 B CN109193961 B CN 109193961B CN 201811379001 A CN201811379001 A CN 201811379001A CN 109193961 B CN109193961 B CN 109193961B
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- magnetic material
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- 239000000696 magnetic material Substances 0.000 claims abstract description 144
- 239000000853 adhesive Substances 0.000 claims description 45
- 230000001070 adhesive effect Effects 0.000 claims description 45
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 238000010030 laminating Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Near-Field Transmission Systems (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a high-efficiency ultrathin receiving end module for wireless charging, which comprises a plurality of layers of magnetic material plates, connecting wires and a wireless charging receiving end coil, wherein the connecting wires are arranged on the magnetic material plates; one part of the connecting wire is buried in the multilayer magnetic material plate, the other part of the connecting wire is transversely exposed out of the multilayer magnetic material plate, the wireless charging receiving end coil is attached to the upper surface of the multilayer magnetic material plate, and the inner ring terminal connecting wire and the outer ring terminal connecting wire of the wireless charging receiving end coil are connected with the connecting wire buried in the multilayer magnetic material plate. The invention solves the problem of partial thickness bias caused by the superposition of the thicknesses of the multi-layer magnetic materials, the coils and the connecting wires by improving the assembly mode of the wireless charging receiving coil on the multi-layer magnetic materials, and in addition, the invention only needs to open holes or slots on part of the multi-layer magnetic materials, thereby reducing the possibility of the problems of reduced charging efficiency, heating of electronic equipment and the like caused by magnetic leakage of the multi-layer magnetic materials.
Description
Technical Field
The invention belongs to the technical field of wireless charging, and particularly relates to a high-efficiency ultrathin receiving end module for wireless charging.
Background
Nowadays, wireless charging technology is rapidly penetrating into people's life, such as mobile phones, watches, wrist bands, headphones and VR/AR glasses that support wireless charging have become more and more popular, which takes the first step of the power transfer from wired to wireless revolution. These are just the beginning of wireless charging technology, and along with the gradual maturation of wireless charging technology, electronic equipment supporting wireless charging will become more and more popular, and wireless charging demand will also become greater, and it will be necessary to have wide application prospects in relevant fields such as consumer electronics, medical electronics, industrial electronics, etc.
In the current design of various complex and compact electronic device IDs, new functions are added to the electronic device, and the design trend is already developed to adapt to the development direction of the increasingly light and thin electronic device while improving the performance. The wireless charging receiving end module is one of important hardware components in the wireless charging technology, and for the electronic equipment supporting wireless charging, the thickness of the assembled wireless charging receiving end module is directly related to the volume of the electronic equipment. At present, the total thickness of the wireless charging receiving end module depends on the thickness of an assembly of magnetic materials, a coil and connecting wires, and the assembly is generally carried out in a mode that a terminal connecting wire of an inner coil ring is connected with a terminal connecting wire of an outer coil ring, so that the thickness of the connecting wires and the thickness of a coil body are overlapped to cause local thickness increase.
Disclosure of Invention
The invention aims to provide a high-efficiency ultrathin receiving end module for wireless charging, which is used for solving the problem that the overall thickness of the existing wireless charging receiving end module is large due to the superposition of the thicknesses of a plurality of layers of magnetic materials, coils and connecting wires.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
a high-efficiency ultrathin receiving end module for wireless charging comprises a plurality of layers of magnetic material plates, connecting wires and a wireless charging receiving end coil (coil) formed by winding metal wires; and one part of the connecting wire is buried in the multilayer magnetic material plate, the other part of the connecting wire is transversely exposed out of the multilayer magnetic material plate, the wireless charging receiving end coil is pasted on the upper surface of the multilayer magnetic material plate, and the inner ring terminal connecting wire and the outer ring terminal connecting wire of the wireless charging receiving end coil are connected with the connecting wire buried in the multilayer magnetic material plate.
Further, the multi-layer magnetic material plate is formed by sequentially laminating at least one layer of magnetic material single sheets, each layer of magnetic material single sheets are bonded through an adhesive, the adhesive is coated on the upper surface of the magnetic material single sheet located at the top layer, and the adhesive is coated on the lower surface of the magnetic material single sheet located at the bottom layer or is coated with a protective film.
Further, the connecting wire is embedded in the lower surface of the multilayer magnetic material plate, the lower surface of the connecting wire is flush with the lower surface of the multilayer magnetic material plate, meanwhile, two terminal lead connecting ports communicated with the connecting wire are formed in the upper surface of the multilayer magnetic material plate, the two terminal lead connecting ports are respectively located in the coil of the wireless charging receiving end coil and outside the coil of the wireless charging receiving end coil, and the inner ring terminal lead connecting wire and the outer ring terminal lead connecting wire of the wireless charging receiving end coil are respectively connected with the connecting wire through the two terminal lead connecting ports in the coil and outside the coil.
Further, the multi-layer magnetic material plate is formed by sequentially staggering and overlapping five layers of the adhesive and four layers of the magnetic material single sheets; the first layer of the adhesive, the first layer of the magnetic material single sheet, the second layer of the adhesive and the second layer of the magnetic material single sheet are sequentially overlapped, and after the first layer of the adhesive, the first layer of the magnetic material single sheet, the second layer of the adhesive and the second layer of the magnetic material single sheet are sequentially overlapped, the two openings on the first layer of the magnetic material single sheet and the second layer of the magnetic material single sheet are correspondingly overlapped in pairs to form two terminal connecting wire connectors; the third layer and the fourth layer are respectively provided with two notches, the coating range of the adhesive on the third layer, the fourth layer and the fifth layer is respectively free from the notches, and after the adhesive on the third layer, the magnetic material on the third layer, the adhesive on the fourth layer, the magnetic material on the fourth layer and the adhesive on the fifth layer are sequentially overlapped, the two notches on the magnetic material on the third layer and the fourth layer are correspondingly overlapped to form an embedded groove for accommodating the connecting wires.
Further, the connecting wire is embedded in the upper surface of the multilayer magnetic material plate, the upper surface of the connecting wire is flush with the upper surface of the multilayer magnetic material plate, the wireless charging receiving end coil is simultaneously attached to the multilayer magnetic material plate and the upper surface of the connecting wire, and the inner ring terminal connecting wire and the outer ring terminal connecting wire of the wireless charging receiving end coil are both directly connected with the connecting wire.
Furthermore, a notch is formed in each of the first layer and the second layer of the magnetic material single sheets, the coating range of the adhesive of the first layer and the second layer is kept away from the notches, and after the adhesive of the first layer, the magnetic material single sheets, the adhesive of the second layer and the magnetic material single sheets are sequentially overlapped, the notches on the magnetic material single sheets of the first layer and the second layer are correspondingly overlapped to form an embedded groove for accommodating the connecting wires.
Further, the connection wire is a flexible circuit board (FPC) or a flat wire.
Further, the thickness of the assembly of the module formed by overlapping the multi-layer magnetic material plate, the connecting lead and the wireless charging receiving end coil is less than or equal to 0.2mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a design scheme of a laminated receiving end module of a wireless charging receiving coil, a multilayer magnetic material and a connecting wire, wherein the assembly thickness of the receiving end module can be controlled within 0.2mm by improving the assembly mode of the wireless charging receiving coil on the multilayer magnetic material, so that the problem of partial thickness bias caused by the superposition of the thicknesses of the multilayer magnetic material, the coil and the connecting wire is solved. Therefore, the invention can meet the requirement of the same wireless charging performance index under the same condition while controlling the product to keep light and thin, and is particularly suitable for being applied to the design of various complex and compact wireless charging electronic equipment IDs at present.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a perspective view of one embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a simplified exploded view of FIG. 1;
fig. 4 is a complete exploded view of fig. 1.
FIG. 5 is a perspective view of an embodiment of the present invention;
FIG. 6 is a cross-sectional view of FIG. 5;
FIG. 7 is a simplified exploded view of FIG. 5;
fig. 8 is a complete exploded view of fig. 5.
Reference numerals in the drawings: 1. a multi-layer magnetic material plate; 2. connecting wires; 3. a wireless charging receiving end coil; 101. a single sheet of magnetic material; 102. an adhesive; 103. the terminal is connected with the lead connecting port; 104. an embedding groove; 301. the inner ring terminal is connected with a lead wire; 302. the outer ring terminal is connected with a lead wire.
Detailed Description
The invention will be described in detail below with reference to the drawings in combination with embodiments.
Example 1
Referring to fig. 1 to 4, a high-efficiency ultra-thin receiving terminal module for wireless charging includes a multi-layered magnetic material plate 1, a connection wire 2, and a wireless charging receiving terminal coil 3.
The multi-layer magnetic material plate 1 is formed by sequentially laminating four magnetic material single sheets 101 through an adhesive 102, wherein the adhesive 102 is coated on the upper surface of the magnetic material single sheet 101 positioned at the top layer, and the adhesive 102 is coated on the lower surface of the magnetic material single sheet 101 positioned at the bottom layer or a protective film is coated on the lower surface of the magnetic material single sheet 101.
The multilayer magnetic material plate 1 can be regarded as being composed of an upper and a lower parts as a whole; the first layer of magnetic material single sheet 101 and the second layer of magnetic material single sheet 101 are the upper half part of the multilayer magnetic material plate 1, two openings are formed on the first layer of magnetic material single sheet 101 and the second layer of magnetic material single sheet 101, the coating range of the first layer of adhesive 102 and the second layer of adhesive 102 avoids the openings, and after the adhesive 102 and the magnetic material single sheet 101 of the upper half part are sequentially overlapped in a staggered way, the two openings on the first layer of magnetic material single sheet 101 and the second layer of magnetic material single sheet 101 are correspondingly overlapped in pairs to form two terminal connecting wire connecting connectors 103; the third layer and the fourth layer of the magnetic material single sheet 101 are lower half parts of the multilayer magnetic material plate 1, a notch is formed in each of the third layer and the fourth layer of the magnetic material single sheet 101, coating ranges of the third layer, the fourth layer and the fifth layer of the adhesive 102 avoid the notches, and after the adhesive 102 and the magnetic material single sheet 101 in the lower half parts are sequentially overlapped in a staggered manner, the notches on the third layer and the fourth layer of the magnetic material single sheet 101 are correspondingly overlapped to form an embedded groove 104 for accommodating the connecting wire 2.
The connecting wire 2 is a flexible circuit board or a flat wire, a part of the connecting wire 2 is embedded in the lower half part of the multilayer magnetic material plate 1 through the embedded groove 104, and the other part of the connecting wire 2 is transversely exposed out of the multilayer magnetic material plate 1, and the lower surface of the connecting wire 2 is flush with the lower surface of the multilayer magnetic material plate 1.
The wireless charging receiving end coil 3 is formed by winding a metal wire, the wireless charging receiving end coil 3 is attached to the upper surface of the multilayer magnetic material plate 1, two terminal lead connecting ports 103 on the upper surface of the multilayer magnetic material plate 1 are respectively located in and out of the coil of the wireless charging receiving end coil 3, and an inner ring terminal lead 301 and an outer ring terminal lead 302 of the wireless charging receiving end coil 3 are respectively connected with the connecting lead 2 embedded in the lower half part of the multilayer magnetic material plate 1 through two terminal lead connecting ports 103 in and out of the coil.
The multi-layer magnetic material plate 1, the connecting lead 2 and the wireless charging receiving end coil 3 are overlapped to form a wireless charging receiving end module, the thickness of the assembly is controlled within 0.2mm, and the requirement of reaching the same wireless charging performance index under the same condition is met.
Example 2
Referring to fig. 5-8, a high efficiency ultra-thin receiver module for wireless charging includes a multi-layered magnetic material plate 1, a connecting wire 2, and a wireless charging receiver coil 3.
The multi-layer magnetic material plate 1 is formed by sequentially laminating four magnetic material single sheets 101 through an adhesive 102, wherein the adhesive 102 is coated on the upper surface of the magnetic material single sheet 101 positioned at the top layer, and the adhesive 102 is coated on the lower surface of the magnetic material single sheet 101 positioned at the bottom layer or a protective film is coated on the lower surface of the magnetic material single sheet 101.
The multilayer magnetic material plate 1 can be regarded as being composed of an upper and a lower parts as a whole; wherein the first layer of magnetic material single sheet 101 and the second layer of magnetic material single sheet 101 are the upper half part of the multilayer magnetic material plate 1, a notch is formed on each of the first layer of magnetic material single sheet 101 and the second layer of magnetic material single sheet 101, the coating range of the first layer of adhesive 102 and the second layer of adhesive 102 avoids the notches, after the adhesive 102 and the magnetic material single sheet 101 on the upper half part are sequentially overlapped in a staggered way, the notches on the first layer of magnetic material single sheet 101 and the second layer of magnetic material single sheet 101 are correspondingly overlapped to form an embedded groove 104 for accommodating the connecting wire 2; the third layer and the fourth layer of the magnetic material single sheet 101 are the lower half part of the multi-layer magnetic material plate 1, and no notch or opening is formed on the third layer and the fourth layer of the magnetic material single sheet 101.
The connecting wire 2 is a flexible circuit board or a flat wire, a part of the connecting wire 2 is embedded in the upper half part of the multilayer magnetic material plate 1 through the embedded groove 104, and the other part of the connecting wire 2 is transversely exposed out of the multilayer magnetic material plate 1, and the upper surface of the connecting wire 2 is flush with the upper surface of the multilayer magnetic material plate 1.
The wireless charging receiving end coil 3 is formed by winding metal wires, the wireless charging receiving end coil 3 is simultaneously attached to the upper surface of the multilayer magnetic material plate 1 and the upper surface of the connecting wire 2, and an inner ring terminal connecting wire 301 and an outer ring terminal connecting wire 302 of the wireless charging receiving end coil 3 are respectively and directly connected with the connecting wire 2 embedded in the upper half part of the multilayer magnetic material plate 1.
The multi-layer magnetic material plate 1, the connecting lead 2 and the wireless charging receiving end coil 3 are overlapped to form a wireless charging receiving end module, the thickness of the assembly is controlled within 0.2mm, and the requirement of reaching the same wireless charging performance index under the same condition is met.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A ultra-thin receiving terminal module of high efficiency for wireless charging, its characterized in that: comprises a multi-layer magnetic material plate (1), a connecting wire (2) and a wireless charging receiving end coil (3) wound by metal wires; a part of the connecting wire (2) is buried in the multilayer magnetic material plate (1), the other part of the connecting wire (2) is transversely exposed out of the multilayer magnetic material plate (1), the wireless charging receiving end coil (3) is attached to the upper surface of the multilayer magnetic material plate (1), and an inner ring terminal connecting wire (301) and an outer ring terminal connecting wire (302) of the wireless charging receiving end coil (3) are connected with the connecting wire (2) buried in the multilayer magnetic material plate (1);
the multi-layer magnetic material plate (1) is formed by sequentially laminating at least one layer of magnetic material single sheets (101), the magnetic material single sheets (101) are adhered through an adhesive (102), the adhesive (102) is coated on the upper surface of the magnetic material single sheet (101) positioned at the top layer, and the adhesive (102) is coated on the lower surface of the magnetic material single sheet (101) positioned at the bottom layer or a protective film is coated on the lower surface of the magnetic material single sheet (101);
the utility model discloses a wireless charging receiving terminal coil, including multilayer magnetic material board (1), connecting wire (2), inner circle terminal connecting wire (301) and outer lane terminal connecting wire (302) of wireless charging receiving terminal coil (3) are connected with connecting wire (2) through two terminal connecting wire connector (103) in the circle and outside the circle respectively, simultaneously, two with terminal connecting wire connector (103) of connecting wire (2) intercommunication are seted up to the upper surface of multilayer magnetic material board (1) are in the lower surface of multilayer magnetic material board (1), just the lower surface of connecting wire (2) with the lower surface of multilayer magnetic material board (1) flushes.
2. A ultra-thin receiving terminal module of high efficiency for wireless charging, its characterized in that: comprises a multi-layer magnetic material plate (1), a connecting wire (2) and a wireless charging receiving end coil (3) wound by metal wires; a part of the connecting wire (2) is buried in the multilayer magnetic material plate (1), the other part of the connecting wire (2) is transversely exposed out of the multilayer magnetic material plate (1), the wireless charging receiving end coil (3) is attached to the upper surface of the multilayer magnetic material plate (1), and an inner ring terminal connecting wire (301) and an outer ring terminal connecting wire (302) of the wireless charging receiving end coil (3) are connected with the connecting wire (2) buried in the multilayer magnetic material plate (1);
the multi-layer magnetic material plate (1) is formed by sequentially laminating at least one layer of magnetic material single sheets (101), the magnetic material single sheets (101) are adhered through an adhesive (102), the adhesive (102) is coated on the upper surface of the magnetic material single sheet (101) positioned at the top layer, and the adhesive (102) is coated on the lower surface of the magnetic material single sheet (101) positioned at the bottom layer or a protective film is coated on the lower surface of the magnetic material single sheet (101);
the connecting wire (2) is embedded in the upper surface of the multilayer magnetic material plate (1), the upper surface of the connecting wire (2) is flush with the upper surface of the multilayer magnetic material plate (1), the wireless charging receiving end coil (3) is simultaneously attached to the upper surface of the multilayer magnetic material plate (1) and the connecting wire (2), and the inner ring terminal connecting wire (301) and the outer ring terminal connecting wire (302) of the wireless charging receiving end coil (3) are directly connected with the connecting wire (2).
3. The high-efficiency ultra-thin receiver module for wireless charging according to claim 1 or 2, wherein: the multi-layer magnetic material plate (1) is formed by sequentially staggering and overlapping five layers of the adhesive (102) and four layers of the magnetic material single sheets (101); the first layer of the adhesive (102), the first layer of the magnetic material single sheet (101), the second layer of the adhesive (102) and the second layer of the magnetic material single sheet (101) are sequentially overlapped, and after the two openings on the first layer of the magnetic material single sheet (101) and the second layer of the magnetic material single sheet (101) are correspondingly overlapped in pairs to form two terminal connecting wire connectors (103); the third layer and the fourth layer are respectively provided with two notches, the coating range of the adhesive (102) is kept away from the notches, the third layer, the adhesive (102), the third layer, the magnetic material single piece (101), the fourth layer, the magnetic material single piece (101) and the fifth layer are respectively overlapped in sequence, and after the adhesive (102) is overlapped in sequence, the two notches on the third layer, the fourth layer, the magnetic material single piece (101) are correspondingly overlapped to form an embedded groove (104) for accommodating the connecting wire (2).
4. The ultra-thin receiver module of claim 3, wherein: the first layer and the second layer are respectively provided with a notch on the magnetic material single sheet (101), the coating range of the adhesive (102) is kept away from the notches, the adhesive (102) on the first layer, the magnetic material single sheet (101), the adhesive (102) on the second layer and the magnetic material single sheet (101) on the second layer are sequentially overlapped, and after the magnetic material single sheets (101) on the first layer and the second layer are sequentially overlapped, the notches on the magnetic material single sheet (101) on the first layer and the second layer are correspondingly overlapped to form an embedded groove (104) for accommodating the connecting wire (2).
5. The ultra-thin receiver module of claim 3, wherein: the connecting wire (2) is a flexible circuit board or a flat wire.
6. The ultra-thin receiver module of claim 3, wherein: the multi-layer magnetic material plate (1), the connecting lead (2) and the wireless charging receiving end coil (3) are overlapped to form an assembly thickness of the module which is smaller than or equal to 0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379001.6A CN109193961B (en) | 2018-11-19 | 2018-11-19 | A ultra-thin receiving terminal module of high efficiency for wireless charging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811379001.6A CN109193961B (en) | 2018-11-19 | 2018-11-19 | A ultra-thin receiving terminal module of high efficiency for wireless charging |
Publications (2)
| Publication Number | Publication Date |
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| CN109193961A CN109193961A (en) | 2019-01-11 |
| CN109193961B true CN109193961B (en) | 2024-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811379001.6A Active CN109193961B (en) | 2018-11-19 | 2018-11-19 | A ultra-thin receiving terminal module of high efficiency for wireless charging |
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- 2018-11-19 CN CN201811379001.6A patent/CN109193961B/en active Active
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| WO2013180367A1 (en) * | 2012-05-30 | 2013-12-05 | 주식회사 나노맥 | Wireless antenna including electromagnetic wave absorption sheet for both radio frequency identification and wireless charging and manufacturing method therefor |
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| Publication number | Publication date |
|---|---|
| CN109193961A (en) | 2019-01-11 |
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