WO2017074104A1 - 무선전력 전송용 자기장 차폐시트 및 이를 포함하는 무선전력 수신모듈 - Google Patents
무선전력 전송용 자기장 차폐시트 및 이를 포함하는 무선전력 수신모듈 Download PDFInfo
- Publication number
- WO2017074104A1 WO2017074104A1 PCT/KR2016/012257 KR2016012257W WO2017074104A1 WO 2017074104 A1 WO2017074104 A1 WO 2017074104A1 KR 2016012257 W KR2016012257 W KR 2016012257W WO 2017074104 A1 WO2017074104 A1 WO 2017074104A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet
- wireless power
- power transmission
- antenna
- magnetic
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
- H01F10/20—Ferrites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
- H01F10/13—Amorphous metallic alloys, e.g. glassy metals
-
- 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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- 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
-
- 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
- H05K9/0007—Casings
-
- 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
- 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
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
Definitions
- the present invention relates to a magnetic shielding sheet for wireless power transmission and a wireless power receiving module including the same.
- RFID Radio Frequency Identification
- NFC Near Field Communication
- WPT Wireless Charging
- Interactive Pen Tablet have been added to mobile terminals including mobile phones and tablet PCs.
- the portable terminal is provided with a wireless charging function for wirelessly charging the built-in battery, such wireless charging is a wireless power receiving module built in the portable terminal, and a wireless power transmission module for supplying power to the wireless power receiving module. Is made by.
- the thickness of the wireless power receiving module embedded in the portable terminal has also become thinner.
- the total thickness of the wireless power receiving module has to be designed to be 0.4 m or less, even 0.35 mm or less. Faced.
- the thickness of the wireless power receiving module is designed to be 0.4mm or less, even 0.35mm or less, there is a considerable difficulty in implementing the charging efficiency required by the wireless charging method.
- the antenna unit when the antenna unit is provided with multiple antennas operating in different frequency bands, it is common to construct a magnetic shielding sheet by stacking a plurality of sheets in order to improve the characteristics of the antenna. Since the lamination method has a limitation in reducing the overall thickness, a shielding sheet of a frame type in which one sheet is inserted into the other is proposed.
- the frame-type magnetic shielding sheet can reduce the overall thickness, but the overall thickness is very thin, for example, in the harsh conditions where the total thickness of the wireless power receiver module is less than 0.4mm, it does not satisfy the required charging efficiency. Revealed.
- the wireless power transmission antenna operating in a magnetic induction method when the wireless power transmission antenna operating in a magnetic induction method and the wireless power transmission antenna operating in a magnetic resonance method are simultaneously implemented in the wireless power receiving module, the wireless power transmission antenna operating in a magnetic induction method has an overall thickness. The satisfies the required charging efficiency even under the harsh conditions of 0.4mm or less, but the antenna for wireless power transmission operating by the magnetic resonance method has a large width, for example, more than 10% in the required charging efficiency.
- the charging efficiency does not significantly decrease, but in the case of a wireless power transmission antenna that operates in a magnetic resonance method, The thinner the thickness, the lower the charging efficiency.
- the present invention has been made in view of the above, and when the antenna for wireless power transmission operating in a magnetic induction method and the antenna for wireless power transmission operating in a magnetic resonance method are implemented in one module, the overall thickness is limited. It is an object of the present invention to provide a magnetic shielding sheet for wireless power transmission that can satisfy all the charging efficiency required in each wireless power transmission method even in severe harsh conditions.
- the present invention by implementing the wireless power receiving module using the magnetic shielding sheet for wireless power transmission as described above, the wireless power that can satisfy the charging characteristics required by different wireless charging method even under severe conditions of severe thickness constraints Another purpose is to provide a receiving module.
- the present invention to solve the above problems is a first sheet for shielding the magnetic field generated in the first wireless power transmission antenna operating in a magnetic induction method; A second sheet for shielding a magnetic field generated by a second wireless power transmission antenna having a receiving portion for accommodating a thickness of the first sheet and operating in a magnetic resonance method; And a third sheet laminated on the same surface of the first sheet and the second sheet so as to cover the first sheet and the second sheet at the same time and shielding a magnetic field generated by the antenna for transmitting the second wireless power.
- a magnetic shielding sheet for power transmission is provided.
- the third sheet may be disposed to cover the boundary area between the first sheet and the second sheet, and may be provided to have the same area as the sum of the area of the first sheet and the area of the second sheet. .
- the first sheet may be a ribbon sheet including at least one or more of an amorphous alloy and a nano grain alloy
- the second sheet and the third sheet may be ferrite sheets.
- the first sheet, the second sheet, and the third sheet may be flake-treated and separated into a plurality of fine pieces.
- the plurality of microflakes may include microflakes having at least one side of a curved shape rather than a straight line, and at least one side of the total number of the plurality of microflakes has a number of fine pieces of at least 50%. Can be.
- the average particle diameter of the fine pieces constituting the second sheet is larger than the average particle diameter of the fine pieces constituting the first sheet. It can be formed to have a large size.
- the plurality of microflakes may be atypical, and may be entirely insulated or partially insulated from neighboring fine pieces.
- the first sheet may be configured by laminating a plurality of layers of ribbon sheets including at least one of an amorphous alloy and a nanocrystalline alloy.
- the present invention includes an antenna unit including a first wireless power transmission antenna for operating in a magnetic induction method and a second wireless power transmission antenna for operating in a magnetic resonance method; And a magnetic field shielding sheet for wireless power transmission, which is disposed on one surface of the antenna unit and focuses in a required direction by shielding a magnetic field generated by the antenna unit.
- the antenna unit may include an MST antenna disposed at a position corresponding to the first sheet together with the first wireless power transmission antenna, and the second sheet together with the second wireless power transmission antenna.
- the antenna may include an NFC antenna disposed at a corresponding position, and together with the first wireless power transmission antenna, the MST antenna and the second wireless power transmission antenna disposed at a position corresponding to the first sheet. It may include an NFC antenna disposed at a position corresponding to the two seats.
- the total thickness of the sum of the thickness of the antenna unit and the magnetic shielding sheet may be 0.3mm ⁇ 0.4mm
- the thickness of the sum of the thickness of the second sheet and the third sheet may be 0.2mm.
- the present invention provides a portable terminal in which the above-described wireless power receiving module is provided in the back cover or the rear case.
- the present invention by additionally stacking a separate sheet on one surface of the shielding sheet having a frame shape, even if the overall thickness is thin, it is possible to satisfy all the charging efficiency required in the wireless power transmission antennas operating in different ways.
- the present invention is configured such that the sheet disposed on the outer side of the plurality of sheets constituting the magnetic shielding sheet is configured to include more than a predetermined ratio of the fine pieces of at least one side of the curved shape to ensure the flexibility of the sheet itself to reduce the characteristic change Can be.
- FIG. 1 is a cross-sectional view showing a magnetic shielding sheet for wireless power transmission according to an embodiment of the present invention
- FIG. 2 is an enlarged view showing the detailed configuration of the first sheet, the second sheet and the third sheet in FIG.
- Figure 3 schematically shows the shape of the fine fragment when any one of the first sheet, the second sheet and the third sheet is separated into a plurality of fine pieces in the magnetic shielding sheet for wireless power transmission according to an embodiment of the present invention drawing,
- FIG. 4 is a view showing a wireless power receiving module to which a magnetic shielding sheet for wireless power transmission is applied to an embodiment of the present invention
- FIG. 5 is a cross-sectional view of FIG. 4,
- 6A to 6C are cross-sectional views illustrating an arrangement relationship between various antenna units and a magnetic shielding sheet that may be applied to FIG. 4.
- the wireless power receiving module 100 includes an antenna unit 110 and a magnetic shielding sheet 120.
- the antenna unit 110 is built in portable electronic devices such as mobile phones, PDAs, PMPs, tablets, multimedia devices, etc. to transmit or receive wireless signals.
- Such an antenna unit 110 is provided with a plurality of wireless power transmission antennas 114a and 114b that operate in different ways at different operating frequencies and thus require the above-mentioned portable electronic devices by receiving radio signals in the corresponding operating frequency bands. Can produce power.
- the plurality of wireless power transmission antennas (114a, 114b) is a magnetic shielding sheet is composed of a circular, elliptical or square flat coil wound around the conductive member having a predetermined length in a clockwise or counterclockwise direction although it may be provided in a form fixed to one surface of the 120, as shown in Figure 4 to 6c, a conductor such as copper foil on at least one surface of the circuit board 112 made of a synthetic resin such as polyimide (PI) or PET It is preferable to implement the thinning by patterning in a loop form or by forming a loop-shaped metal pattern using a conductive ink.
- PI polyimide
- the plurality of wireless power transfer antennas 114a and 114b are used for the first wireless power transmission antenna 114a operating in a magnetic induction method and the second wireless power transmission operating in a magnetic resonance method. It may include an antenna 114b.
- the first wireless power transmission antenna 114a may be a Qi or PMA antenna that operates in a self-induction method in a frequency band in which an operating frequency is 100 to 350 kHz, and the second wireless power transmission antenna 114b is used.
- the wireless power receiving module 100 is a first wireless power transmission antenna 114a and a second wireless power transmission for each of the antenna unit 110 operating in a magnetic induction method and a magnetic resonance method.
- the antenna 114b By including the antenna 114b, it is possible to use two different wireless power transmission methods different from each other through one receiving module.
- the first wireless power transmission antenna 114a operating in a magnetic induction method may be operated in both a Qi method and a PMA method through one antenna.
- the wireless power receiving module 100 is built in the portable terminal to receive wireless power by using all the Qi method, PMA method and A4WP method different in operating frequency or operation method or a battery built in the mobile terminal. Can be charged.
- the plurality of antennas 114a and 114b are shown as being patterned on the upper surface of the circuit board 112, the present invention is not limited thereto and may be patterned on the lower surface of the circuit board 112. After being formed on the upper and lower surfaces of the substrate 112, they may be electrically connected to each other through via holes.
- the antenna unit 110 may be fixed to one surface of the magnetic shielding sheet 120 via an adhesive layer.
- the adhesive layer may be a bond, PVC, rubber or double-sided tape and the like having adhesive properties, and may include a component having conductivity.
- the antenna unit 110 may additionally include an antenna for performing additional functions such as data transmission and reception and self-payment using short-range data communication as well as wireless power transmission.
- the antenna unit 110 may further include at least one of a near field communication (NFC) antenna 114d for short range communication and a magnetic secure transmission (MST) antenna 114c of a magnetic secure transmission method.
- NFC near field communication
- MST magnetic secure transmission
- an MST antenna 114c is disposed between the first wireless power transmission antenna 114a and the second wireless power transmission antenna 114a (see FIG. 6A), or An NFC antenna 114d may be disposed between the first wireless power transmission antenna 114a and the second wireless power transmission antenna 114a (see FIG. 6B), and the first wireless power transmission antenna 114a. ) And both the MST antenna 114c and the NFC antenna 114d may be disposed between the second wireless power transmission antenna 114a (see FIG. 6C).
- the NFC antenna 114d and the MST antenna 114c may be arranged to be close to each antenna having a similar frequency band among the first wireless power transmission antenna 114a and the second wireless power transmission antenna 114b. have. That is, the NFC antenna 114d operating at 13.56 MHz may be disposed in close proximity to the second wireless power transmission antenna 114b operating at 6.765 ⁇ 6.795 MHz, and the MST antenna 114c operating at 70 to 80 kHz is described above.
- the first wireless power transmission antenna 114a may be disposed in close proximity to the antenna.
- the first wireless power transmission antenna 114a and the MST antenna 114c may be disposed in an area corresponding to the first sheet 121 to be described later, and the second wireless power transmission antenna 114b.
- the NFC antenna 114d may be disposed in areas respectively corresponding to the second sheet 122 to be described later.
- the NFC antenna 114d has a higher operating frequency band than the first wireless power transmission antenna 114a. It may be formed of a conductive pattern of a fine line width on the outside of the wireless power transmission antenna 114a, the first wireless power transmission antenna 114a is required to transmit power and use a lower frequency band than the NFC antenna 114d The line width of the NFC antenna 114d may be wider than that of the NFC antenna 114d.
- the magnetic field shielding sheet 120 is formed of a plate-like member having a predetermined area as shown in Figs. 1 and 2, and serves to shield the magnetic field generated by the antenna unit 110 to focus in a required direction. To perform.
- the magnetic field shielding sheet 120 may prevent the magnetic field generated from antennas operating in different frequency bands from affecting other components, respectively.
- the first sheet 121, the second sheet 122, and the third sheet may be shielded.
- the first sheet 121 is for shielding the magnetic field radiated from the first wireless power transmission antenna 114a and the MST antenna 114c of the plurality of antennas
- the second sheet 122 Is for shielding the magnetic field radiated from the second wireless power transmission antenna 114b and the NFC antenna 114d.
- the third sheet 123 supplements the second sheet 122 to shield the magnetic field radiated from the second wireless power transmission antenna 114b and the NFC antenna 114d.
- the first sheet 121 may be disposed in an area corresponding to the first wireless power transmission antenna 114a, and the second sheet 122 is the second wireless power transmission antenna 114b.
- the third sheet 123 may also be disposed to include a region corresponding to the second wireless power antenna 114b.
- the first sheet 121 may have an area including the entire size of the first wireless power transmission antenna 114a disposed inside the second wireless power transmission antenna 114b. Accordingly, by covering the entire area of the first wireless power transmission antenna 114a through the first sheet 121, it is possible to smoothly shield the magnetic field generated in the first wireless power transmission antenna.
- the first sheet 121 may form regions directly above the first wireless power transmission antenna 114a and the MST antenna 114c.
- the second sheet 122 and the third sheet 123 may include the second wireless power transmission antenna 114b and the NFC. It may be provided to include a region directly above the antenna (114d).
- the arrangement positions of the NFC antenna 114d and the MST antenna 114c are not limited thereto, and the first wireless power transmission antenna 114a is disposed in an area corresponding to the first sheet 121 and is positioned in the first sheet 121.
- the arrangement positions of the NFC antenna 114d and the MST antenna 114c may be changed.
- the NFC antenna 114d may be disposed at a position corresponding to the first sheet 121 and the MST antenna 114c may also be disposed at a position corresponding to the second sheet 122. Reveal.
- the magnetic shielding sheet 120 according to the present invention can effectively shield the magnetic field generated by each antenna operating in different frequency bands to reduce the overall thickness while increasing the performance of the antenna.
- an accommodating part may be formed inside the second sheet 122 to accommodate the entire thickness of the first sheet 121. Accordingly, the first sheet 121 may be inserted into the receiving portion, and the third sheet 123 is stacked on the same surface of the first sheet 121 and the second sheet 122 and One surface of the first sheet 121 and the second sheet 122 may be simultaneously covered.
- an accommodating part having a size substantially the same as that of the first sheet 121 may be formed through the inside of the second sheet 122, and the second sheet 122 may be substantially formed with the first sheet 121. It may have the same thickness. Accordingly, when the first sheet 121 is inserted into the receiving portion of the second sheet 122, the second sheet 122 can accommodate the entire thickness of the first sheet 121, One surface of the first sheet 121 and the second sheet 122 may form a horizontal plane with each other.
- the third sheet 123 is the first sheet 121 and the second sheet 122 to cover the boundary area of the first sheet 121 and the second sheet 122 arranged in the frame on the same surface. It may be stacked on one side of the).
- the third sheet 123 is laminated on the first sheet 121 and the second sheet 122 to cover an area including a boundary line between the first sheet 121 and the second sheet 122.
- a gap formed between the first sheet 121 and the second sheet 122 may be covered by the third sheet 123.
- the third sheet 123 may be provided to have the same characteristics as the second sheet 122 so that the magnetic field generated by the second wireless power transmission antenna 114b may be shielded and focused in a required direction. Can be.
- the magnetic field shielding sheet 120 may reduce the thickness of each of the first sheet 121, the second sheet 122, and the third sheet 123 in order to reduce the overall thickness.
- the magnetic resonance type wireless power transmission or wireless charging through the power transmission antenna 114b complements the role of the second sheet 122 through the third sheet 123, the power transmission efficiency or the charging efficiency is greatly reduced. You can prevent it.
- the magnetic shielding sheet 120 in order to satisfy the harsh conditions that the overall thickness of the wireless power receiving module 100 is limited to a thickness of 0.4mm or less, even 0.35mm or less Although the overall thickness of the film is thinned to a thickness of 0.2 mm, the wireless required for the first wireless power transmission antenna 114a operating in a magnetic induction method as well as the second wireless power transmission antenna 114b operating in a magnetic resonance method Power transmission efficiency or wireless charging efficiency can be satisfied.
- the reference example is the charging efficiency when the magnetic shielding sheet is composed only of the sheet for the antenna for wireless power transmission operating in a magnetic resonance method
- the comparative example is the first for the antenna for wireless power transmission operating in a magnetic induction method
- the charging efficiency of the magnetic shielding sheet according to the present invention is the charging efficiency when the magnetic shielding sheet is configured in a frame type inserted into the second sheet for the wireless power transmission antenna operating in a magnetic resonance method. Indicates.
- the total thickness of the magnetic shielding sheet used in the reference examples, comparative examples and examples is 0.2mm, and more specifically, a ferrite sheet having a thickness of 0.2mm as a sheet for a wireless power transmission antenna operating in a magnetic resonance method.
- the charging efficiency was compared when the charging power is 4W and 5W.
- the magnetic field shielding sheet 120 according to the present invention shows charging efficiency approximately equal to the charging efficiency in the reference example, which is an optimal condition of the antenna for wireless power transmission operating in a magnetic resonance method.
- the charging efficiency is approximately 90% compared to the charging efficiency in the reference example.
- the magnetic shielding sheet 120 according to the present invention can prevent the charging efficiency of the second wireless power transmission antenna from being greatly reduced even if the overall thickness is reduced.
- the second sheet 122 and the third sheet 123 for the second wireless power transmission antenna 114b may be provided to have the same thickness or may have different thicknesses. That is, the thickness of the first sheet 121 for the first wireless power transmission antenna 114a is a thickness that satisfies the power transmission efficiency or charging efficiency required for wireless power transmission or wireless charging through a magnetic induction method.
- the thickness of the third sheet 123 is the first sheet 121 of the total thickness of the magnetic shielding sheet 120 is acceptable Or the thickness of the second sheet 122 can be appropriately added or subtracted within the remaining thickness.
- the magnetic shielding sheet 120 including the first sheet 121, the second sheet 122, and the third sheet 123 is attached to at least one of an upper surface and a lower surface by an adhesive layer 125.
- the protective film 126 may be provided.
- the adhesive layer 125 may include a non-conductive component, and at least one sheet of the first sheet 121, the second sheet 122, and the third sheet 133 may be flake-processed to form a plurality of sheets. If separated into fine pieces may be absorbed between the fine pieces to serve to insulate the fine pieces.
- the adhesive layer 125 may be provided as an adhesive, or may be provided in the form of a film-based substrate, and a protective film coated with an adhesive on one or both sides of the substrate, and may have adhesiveness or adhesiveness. have.
- the magnetic shielding sheet 120 includes a first sheet 121 for the first wireless power transmission antenna 114a and a second sheet for the second wireless power transmission antenna 114b ( 122 and the third sheet 123 may be provided to have different permeability in a predetermined frequency band.
- the first sheet 121 may be formed of a material having a relatively higher permeability than the second sheet 122 and the third sheet 123 in the band 100 ⁇ 350kHz.
- the first sheet 121 may be a ribbon sheet including at least one or more of an amorphous alloy and nanocrystalline alloy
- the second sheet 122 and the third sheet 123 is a ferrite sheet Can be used.
- the ribbon sheet including at least one or more of the amorphous alloy and the nano-crystalline alloy may be used a Fe-based or Co-based magnetic alloy
- the ferrite sheet may be a sintered ferrite sheet.
- the ferrite may be Mn-Zn ferrite or Ni-Zn ferrite.
- the amorphous alloy or nanocrystalline alloy refers to a metal having an disordered or irregular arrangement because the arrangement of atoms or molecules is disturbed even though the arrangement of atoms or molecules has the same components as the regular crystalline alloy.
- first sheet 121, the second sheet 122 and the third sheet 123 is not limited to the above-mentioned types, and the first wireless power transmission antenna 114a and the second wireless power transmission are not limited thereto. It is noted that any material having magnetic properties may be used to shield the magnetic field generated by the antenna 114b to increase power transmission efficiency or wireless charging efficiency.
- the first sheet 121 for the first wireless power transmission antenna 114a is a ribbon sheet 121a including at least one of an amorphous alloy and a nanocrystalline alloy, as shown in FIG. 2.
- the ribbon sheet 121a may be flake-processed to be separated into a plurality of fine pieces, and each of the fine pieces may be irregularly formed. This is to increase the overall resistance and to suppress the generation of eddy current to reduce the loss caused by the eddy current to increase the charging efficiency.
- the first sheet 121 is composed of a ribbon sheet 121a including at least one or more of an amorphous alloy and a nano-crystalline alloy
- the first sheet 121 is flake-processed and separated into a plurality of fine pieces.
- the plurality of ribbon sheets 121a may be stacked and stacked in multiple layers.
- an adhesive layer 121b including a non-conductive component may be disposed between each ribbon sheet 121a.
- the adhesive layer 121b may serve to insulate neighboring fine pieces by moving between at least a part of each of the ribbon sheets 121a stacked on each other and moving between the fine pieces constituting the ribbon sheet 121a.
- the adhesive layer may be provided with an adhesive or may be provided with an adhesive applied to one or both sides of the film-shaped substrate.
- both the second sheet 122 and the third sheet 123 for the second wireless power transmission antenna 114b may be flake-processed and separated into a plurality of fine pieces.
- both the second sheet 122 and the third sheet 123 may be flake-processed to be separated into a plurality of fine pieces, and each of the fine pieces may have a thickness of 1 ⁇ m to 7 mm. It may be provided in size and may be randomly made irregular.
- the second sheet 122 and the third sheet 123 are made of a brittle ferrite sheet
- the second sheet 122 and the third sheet 123 are separated into a plurality of fine pieces to secure flexibility to prevent or minimize cracks or cracks.
- At least one of the first sheet 121, the second sheet 122, and the third sheet 123 is flake-processed and separated into a plurality of pieces.
- At least one side may include a fine piece consisting of a curved shape rather than a straight line (see FIG. 3). That is, the total number of fine pieces having at least one side curved portion of the total number of fine pieces constituting each sheet may be 50% or more of the total number, preferably 70% or more.
- the smaller number of fine pieces pressurizing the protective film improves the flexibility of the sheet itself, which is less likely to be broken by bending or bending. Since it means, the change of the initial characteristic value of the sheet itself is insignificant.
- the second sheet 122 and the third sheet 123 is at least one side with respect to the total number of fine pieces constituting each sheet It is preferable to comprise so that the ratio of the fine fragment which consists of a curved shape may be 70% or more.
- the second sheet 122 and the third sheet 123 are formed.
- the average particle diameter of the fine pieces constituting the may be provided to have a larger size than the average particle diameter of the fine pieces constituting the first sheet 121.
- the average particle diameter of the fine pieces constituting the second sheet 122 and the third sheet 123 is 1.2 to 2 times larger than the average particle diameter of the fine pieces constituting the first sheet 121. It may be provided to have.
- the average particle diameter of the fine pieces constituting the first sheet 121 may be 1 ⁇ m to 4 mm
- the average particle diameter of the fine pieces constituting the second sheet 122 and the third sheet 123 is It can be 4mm ⁇ 6mm.
- the average particle diameter refers to the volume average diameter measured by the laser diffraction particle size distribution meter.
- the first sheet 121 is composed of a ribbon sheet containing at least one or more of an amorphous alloy and nano-crystalline alloy
- the second sheet 122 and the third sheet 123 is composed of a ferrite sheet
- the average particle diameter of the ferrite pieces constituting the second sheet 122 and the third sheet 123 may be provided to have a size larger than the average particle diameter of the ribbon pieces constituting the first sheet 121.
- the size of the ferrite piece is too large, for example, the size of the sheet itself is greater than twice the average particle diameter of the ribbon pieces constituting the first sheet 121, the flexibility of the sheet itself is reduced, the first sheet ( If the average particle diameter of the ferrite fragment is 1.2 times or less than the average particle diameter of the ribbon pieces constituting the 121) it is because the ferrite can not fully exhibit the original function.
- the magnetic field shielding sheet 120 and the wireless power receiving module 100 including the same according to the present invention may be provided in a form attached to the back cover of the portable terminal when applied to an electronic device such as a portable terminal.
- the portable terminal When the portable terminal is implemented in one piece, the portable terminal may be embedded in a form attached to the rear case of the portable terminal.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
Abstract
Description
충전전력(W) | 기준예 충전효율(%) | 비교예 충전효율(%) | 실시예 충전효율(%) |
4 | 51.27 | 46.02 | 50.81 |
5 | 50.61 | 46.96 | 50.52 |
만곡형상 미세조각비율 | 30% | 50% | 70% |
미세조각의 평균개수 | 20 | 9 | 3 |
불량여부 | X | O | O |
Claims (18)
- 자기유도방식으로 작동하는 제1무선전력 전송용 안테나에서 발생되는 자기장을 차폐하기 위한 제1시트;상기 제1시트의 두께를 수용하기 위한 수용부가 구비되고 자기공진방식으로 작동하는 제2무선전력 전송용 안테나에서 발생되는 자기장을 차폐하기 위한 제2시트; 및상기 제1시트 및 제2시트를 동시에 덮도록 상기 제1시트 및 제2시트의 동일면 상에 적층되어 상기 제2무선전력 전송용 안테나에서 발생되는 자기장을 차폐하는 제3시트;를 포함하는 무선전력전송용 자기장 차폐시트.
- 제 1항에 있어서,상기 제3시트는 상기 제1시트 및 제2시트의 경계영역을 덮도록 배치되는 무선전력전송용 자기장 차폐시트.
- 제 1항에 있어서,상기 제1시트는 비정질 합금 및 나노 결정립 합금 중 적어도 1종 이상을 포함하는 리본시트이고, 상기 제2시트 및 제3시트는 페라이트 시트인 무선전력전송용 자기장 차폐시트.
- 제 3항에 있어서,상기 제1시트, 제2시트 및 제3시트 중 적어도 어느 하나는 플레이크 처리되어 다수 개의 미세조각으로 분리형성되는 무선전력전송용 자기장 차폐시트.
- 제 4항에 있어서,상기 다수 개의 미세조각은 적어도 한 변이 직선이 아닌 만곡형상으로 이루어진 미세조각을 포함하는 무선전력전송용 자기장 차폐시트.
- 제 5항에 있어서,상기 다수 개의 미세조각의 전체개수 중 적어도 한 변이 만곡형상으로 이루어진 미세조각의 개수가 50% 이상인 무선전력전송용 자기장 차폐시트.
- 제 4항에 있어서,상기 제1시트 및 제2시트가 플레이크 처리되어 다수 개의 미세조각으로 구성되는 경우, 상기 제2시트를 구성하는 미세조각의 평균입경은 상기 제1시트를 구성하는 미세조각의 평균입경보다 더 큰 크기를 갖도록 형성되는 무선전력전송용 자기장 차폐시트.
- 제 4항에 있어서,상기 다수 개의 미세조각은 비정형으로 이루어지는 무선전력전송용 자기장 차폐시트.
- 제 4항에 있어서,상기 다수 개의 미세 조각들은 서로 이웃하는 미세 조각들 간에 전체적으로 절연되거나 부분적으로 절연되는 무선전력전송용 자기장 차폐시트.
- 제 3항에 있어서,상기 제1시트는 비정질 합금 및 나노 결정립 합금 중 적어도 1종이상을 포함하는 리본시트가 다층으로 적층되어 구성되는 무선전력전송용 자기장 차폐시트.
- 제 3항에 있어서,상기 페라이트 시트는 Mn-Zn계 페라이트 또는 Ni-Zn계 페라이트로 이루어진 무선전력전송용 자기장 차폐시트.
- 자기유도 방식으로 작동하는 제1무선전력 전송용 안테나 및 자기공진 방식으로 작동하는 제2무선전력 전송용 안테나를 포함하는 안테나유닛; 및상기 안테나유닛의 일면에 배치되고 상기 안테나유닛에서 발생되는 자기장을 차폐하여 소요의 방향으로 집속시킬 수 있도록 제1항 내지 제 11항 중 어느 한 항에 기재된 무선전력전송용 자기장 차폐시트;를 포함하는 무선전력 수신모듈.
- 제 12항에 있어서,상기 안테나유닛은 MST 안테나를 포함하고,상기 제1무선전력 전송용 안테나 및 MST 안테나는 상기 제1시트와 대응되는 위치에 배치되는 무선전력 수신모듈.
- 제 12항에 있어서,상기 안테나유닛은 NFC 안테나를 포함하고,상기 제2무선전력 전송용 안테나 및 NFC 안테나는 상기 제2시트와 대응되는 위치에 배치되는 무선전력 수신모듈.
- 제 12항에 있어서,상기 안테나유닛은 MST 안테나 및 NFC 안테나를 포함하고,상기 제1무선전력 전송용 안테나 및 MST 안테나는 상기 제1시트와 대응되는 위치에 배치되고,상기 제2무선전력 전송용 안테나 및 NFC 안테나는 상기 제2시트와 대응되는 위치에 배치되는 무선전력 수신모듈.
- 제 12항에 있어서,상기 안테나유닛 및 자기장 차폐시트의 두께를 합한 총 두께는 0.3mm ~ 0.4mm인 무선전력 수신모듈.
- 제 12항에 있어서,상기 제2시트 및 제3시트의 두께를 합한 두께는 0.2mm인 무선전력 수신모듈.
- 제 12항에 기재된 무선전력 수신모듈이 백커버 또는 리어케이스에 구비된 휴대 단말기.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/770,288 US11087912B2 (en) | 2015-10-30 | 2016-10-28 | Magnetic field shield sheet for wireless power transmission and wireless power receiving module comprising same |
JP2018522019A JP6714082B2 (ja) | 2015-10-30 | 2016-10-28 | 無線電力伝送用磁場遮蔽シート及びこれを含む無線電力受信モジュール |
CN201680076608.XA CN108432358B (zh) | 2015-10-30 | 2016-10-28 | 无线电力传输用磁场屏蔽片以及包括其的无线电力接收模块 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150152496A KR101939663B1 (ko) | 2015-10-30 | 2015-10-30 | 무선충전용 자기장 차폐시트 및 이를 포함하는 무선전력 수신모듈 |
KR10-2015-0152496 | 2015-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017074104A1 true WO2017074104A1 (ko) | 2017-05-04 |
Family
ID=58630668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2016/012257 WO2017074104A1 (ko) | 2015-10-30 | 2016-10-28 | 무선전력 전송용 자기장 차폐시트 및 이를 포함하는 무선전력 수신모듈 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11087912B2 (ko) |
JP (1) | JP6714082B2 (ko) |
KR (1) | KR101939663B1 (ko) |
CN (1) | CN108432358B (ko) |
WO (1) | WO2017074104A1 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019208000A (ja) * | 2018-05-29 | 2019-12-05 | サンウェイ コミュニケーション (ジアンスー) カンパニー リミテッド | ワイヤレス充電モジュール用シールドシート及びワイヤレス充電モジュール |
CN111566765A (zh) * | 2018-03-13 | 2020-08-21 | 阿莫善斯有限公司 | 大面积型复合磁场屏蔽垫及包括此的无线电力传输模块 |
CN112655115A (zh) * | 2018-09-07 | 2021-04-13 | 阿莫技术有限公司 | 组合天线模块 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20170092238A (ko) * | 2016-02-03 | 2017-08-11 | 엘지이노텍 주식회사 | 무선 전력 충전을 위한 자성 차폐재 및 무선 전력 수신 장치 |
KR102122392B1 (ko) * | 2017-09-18 | 2020-06-12 | 주식회사 아모센스 | 자기장 차폐시트 및 이를 포함하는 무선전력 전송모듈 |
EP3736839A1 (en) | 2019-05-06 | 2020-11-11 | AT & S Austria Technologie & Systemtechnik Aktiengesellschaft | Component carrier comprising embedded magnet stack |
CN110138104B (zh) * | 2019-06-14 | 2023-11-17 | 青岛大学 | 一种用于无线电能传输磁耦合器的复合屏蔽层 |
CN112103642B (zh) * | 2019-06-18 | 2021-11-09 | 阿莫先恩电子电器有限公司 | 磁场屏蔽片及其制造方法、无线电力接收模块及终端设备 |
KR102175380B1 (ko) * | 2020-10-23 | 2020-11-06 | 주식회사 아모센스 | 대면적형 복합 자기장 차폐시트 및 이를 포함하는 무선전력 전송모듈 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101163574B1 (ko) * | 2012-03-13 | 2012-07-06 | 주식회사 나노맥 | 무선인식 및 무선충전 겸용 전자파흡수체와 이를 포함하는 무선인식 및 무선충전 겸용 무선안테나, 그것의 제조방법 |
KR101455729B1 (ko) * | 2013-03-06 | 2014-11-03 | (주)프론티어 | 근거리 통신 안테나 모듈 및 제조 방법, 이를 포함한 무선 통신 단말기의 배터리 패키지와 후면 커버 패키지 |
KR20150045421A (ko) * | 2013-03-05 | 2015-04-28 | 주식회사 아모센스 | 자기장 및 전자파 차폐용 복합시트 및 이를 구비하는 안테나 모듈 |
KR101534542B1 (ko) * | 2012-11-21 | 2015-07-07 | 동부전자소재 주식회사 | 무선 충전 및 근거리 통신 동시 구현용 하이브리드 자성시트 및 이를 포함하는 하이브리드 전자부품 모듈 |
KR101548276B1 (ko) * | 2011-11-08 | 2015-08-31 | 주식회사 아모센스 | 하이브리드형 자기장 차폐시트, 안테나 장치 및 이를 이용한 휴대 단말기기 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1426982A4 (en) * | 2001-08-31 | 2004-11-17 | Tdk Corp | LAMINATED SOFT MAGNETIC LINK, SOFT MAGNETIC SHEET AND PRODUCTION METHOD FOR A LAMINATED SOFT MAGNETIC LINK |
JP5170232B2 (ja) * | 2008-02-28 | 2013-03-27 | 日本電気株式会社 | 電磁シールド構造およびそれを用いた無線装置、電磁シールドの製造方法 |
JP5685827B2 (ja) * | 2010-03-29 | 2015-03-18 | ソニー株式会社 | 磁性シート、アンテナモジュール及び電子機器 |
JP2012186949A (ja) * | 2011-03-07 | 2012-09-27 | Hitachi Maxell Energy Ltd | 磁界共鳴を利用した非接触電力伝送装置 |
JP2012244763A (ja) * | 2011-05-19 | 2012-12-10 | Sony Corp | 給電装置、給電システムおよび電子機器 |
CN104011814B (zh) * | 2011-12-21 | 2017-08-15 | 阿莫先恩电子电器有限公司 | 磁场屏蔽片及其制造方法和无线充电器用接收装置 |
KR20130090121A (ko) * | 2012-02-03 | 2013-08-13 | 삼성전자주식회사 | 기능성 시트 |
JP6268651B2 (ja) * | 2012-02-03 | 2018-01-31 | アモセンス カンパニー,リミテッド | デジタイザ用磁場遮蔽シートおよびその製造方法、並びにこれを利用した携帯端末機器 |
WO2013183913A1 (ko) * | 2012-06-04 | 2013-12-12 | 주식회사 아모센스 | 디지타이저용 자기장 차폐시트 및 그의 제조방법과 이를 이용한 휴대 단말기기 |
US9640304B2 (en) * | 2012-07-12 | 2017-05-02 | Skc Co., Ltd. | Ceramic laminate sheet with flexibility and preparation method thereof |
KR101399024B1 (ko) * | 2012-12-14 | 2014-05-27 | 주식회사 아모센스 | 자기장 차폐시트 및 그 제조방법과 이를 이용한 휴대 단말기 |
KR101399022B1 (ko) * | 2012-12-27 | 2014-05-27 | 주식회사 아모센스 | 전자파 흡수시트 및 그의 제조방법과 이를 포함하는 전자기기 |
KR101279856B1 (ko) | 2013-04-12 | 2013-06-28 | 주식회사 케이더파워 | 근거리 통신용 안테나 및 무선 충전 전력전달용 코일을 실장하는 안테나 장치 |
US20140320369A1 (en) * | 2013-04-24 | 2014-10-30 | Broadcom Corporation | Shielding layer for a device having a plurality of antennas |
US9672976B2 (en) * | 2013-10-28 | 2017-06-06 | Nokia Corporation | Multi-mode wireless charging |
KR20150089239A (ko) * | 2014-01-27 | 2015-08-05 | 엘지이노텍 주식회사 | 무선 전력 수신 장치 |
CN104900383B (zh) * | 2015-04-27 | 2017-04-19 | 安泰科技股份有限公司 | 无线充电用单/多层导磁片及其制备方法 |
KR101548278B1 (ko) * | 2015-04-28 | 2015-08-28 | 주식회사 아모센스 | 하이브리드형 자기장 차폐시트 및 이를 이용한 안테나 장치 |
US10931152B2 (en) * | 2015-07-20 | 2021-02-23 | Amosense Co., Ltd. | Method of manufacturing magnetic field shielding sheet and magnetic field shielding sheet formed thereby |
KR102405414B1 (ko) * | 2015-10-13 | 2022-06-07 | 주식회사 위츠 | 자기장 차폐 시트 및 이를 포함하는 무선 충전 장치 |
US10327365B2 (en) * | 2015-11-23 | 2019-06-18 | Amosense Co., Ltd. | Magnetic field shielding unit and multi-functional complex module including same |
KR102452781B1 (ko) * | 2015-12-15 | 2022-10-12 | 삼성전자주식회사 | 차폐 구조를 포함하는 전자 장치 |
-
2015
- 2015-10-30 KR KR1020150152496A patent/KR101939663B1/ko active IP Right Grant
-
2016
- 2016-10-28 CN CN201680076608.XA patent/CN108432358B/zh active Active
- 2016-10-28 JP JP2018522019A patent/JP6714082B2/ja active Active
- 2016-10-28 WO PCT/KR2016/012257 patent/WO2017074104A1/ko active Application Filing
- 2016-10-28 US US15/770,288 patent/US11087912B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101548276B1 (ko) * | 2011-11-08 | 2015-08-31 | 주식회사 아모센스 | 하이브리드형 자기장 차폐시트, 안테나 장치 및 이를 이용한 휴대 단말기기 |
KR101163574B1 (ko) * | 2012-03-13 | 2012-07-06 | 주식회사 나노맥 | 무선인식 및 무선충전 겸용 전자파흡수체와 이를 포함하는 무선인식 및 무선충전 겸용 무선안테나, 그것의 제조방법 |
KR101534542B1 (ko) * | 2012-11-21 | 2015-07-07 | 동부전자소재 주식회사 | 무선 충전 및 근거리 통신 동시 구현용 하이브리드 자성시트 및 이를 포함하는 하이브리드 전자부품 모듈 |
KR20150045421A (ko) * | 2013-03-05 | 2015-04-28 | 주식회사 아모센스 | 자기장 및 전자파 차폐용 복합시트 및 이를 구비하는 안테나 모듈 |
KR101455729B1 (ko) * | 2013-03-06 | 2014-11-03 | (주)프론티어 | 근거리 통신 안테나 모듈 및 제조 방법, 이를 포함한 무선 통신 단말기의 배터리 패키지와 후면 커버 패키지 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111566765A (zh) * | 2018-03-13 | 2020-08-21 | 阿莫善斯有限公司 | 大面积型复合磁场屏蔽垫及包括此的无线电力传输模块 |
JP2019208000A (ja) * | 2018-05-29 | 2019-12-05 | サンウェイ コミュニケーション (ジアンスー) カンパニー リミテッド | ワイヤレス充電モジュール用シールドシート及びワイヤレス充電モジュール |
CN112655115A (zh) * | 2018-09-07 | 2021-04-13 | 阿莫技术有限公司 | 组合天线模块 |
Also Published As
Publication number | Publication date |
---|---|
KR20170050665A (ko) | 2017-05-11 |
CN108432358B (zh) | 2020-02-07 |
JP2018535634A (ja) | 2018-11-29 |
US11087912B2 (en) | 2021-08-10 |
JP6714082B2 (ja) | 2020-06-24 |
CN108432358A (zh) | 2018-08-21 |
US20180315534A1 (en) | 2018-11-01 |
KR101939663B1 (ko) | 2019-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017074104A1 (ko) | 무선전력 전송용 자기장 차폐시트 및 이를 포함하는 무선전력 수신모듈 | |
WO2017030289A1 (ko) | 안테나유닛 및 이를 포함하는 무선전력 전송모듈 | |
WO2017135687A1 (ko) | 무선전력 전송모듈용 차폐유닛 및 이를 포함하는 무선전력 전송모듈 | |
WO2016159551A1 (ko) | 무선 충전용 방열유닛 및 이를 포함하는 무선전력 충전모듈 | |
WO2016186443A1 (ko) | 콤보 안테나유닛 및 이를 포함하는 무선전력 수신모듈 | |
WO2016190649A1 (ko) | 무선전력 수신모듈 | |
WO2017023080A1 (ko) | 차량용 무선전력 송신모듈 | |
WO2016114528A1 (ko) | 방열유닛 및 이를 구비한 무선전력 송수신장치 | |
WO2017078481A1 (ko) | 콤보형 안테나 모듈 | |
WO2017007196A1 (ko) | 방열시트 및 이를 포함하는 무선전력 전송모듈 | |
WO2017014430A1 (ko) | 무선전력 송신모듈 | |
WO2017069581A1 (ko) | 차량용 안테나 모듈 | |
WO2017007231A1 (ko) | 무선 충전과 nfc 통신을 위한 무선 안테나 및 이를 적용한 무선 단말기 | |
WO2016186444A1 (ko) | 무선충전용 차폐유닛 및 이를 포함하는 무선전력 전송모듈 | |
WO2016072779A1 (ko) | 무선충전기용 송신장치 | |
WO2014204153A2 (ko) | 수신 안테나 및 이를 포함하는 무선 전력 수신 장치 | |
WO2017209481A1 (ko) | 자기차폐용 하이브리드 메탈시트 및 이를 포함하는 무선전력 전송모듈 | |
KR102565032B1 (ko) | 무선전력전송용 일체형 자기장 차폐성 방열유닛 및 이를 포함하는 무선전력 전송 모듈 | |
CN110710122B (zh) | 车辆用无线电力发射装置 | |
WO2017048062A1 (ko) | 근거리 통신 안테나 모듈 및 이를 구비하는 휴대 단말 | |
WO2017142350A1 (ko) | 휴대단말기용 백커버 및 이를 포함하는 백커버 일체형 안테나모듈 | |
WO2019172595A1 (ko) | 무선전력 송신장치 | |
WO2017200236A1 (ko) | 안테나 모듈과 그 제조 방법 및 이를 구비한 휴대용 단말기 | |
WO2016190708A1 (ko) | 무선전력 전송용 안테나유닛 및 이를 포함하는 무선전력 송신모듈 | |
WO2018147649A1 (ko) | 자성시트 및 이를 포함하는 무선 전력 수신 장치 |
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: 16860287 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15770288 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2018522019 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16860287 Country of ref document: EP Kind code of ref document: A1 |