Published patent: 10-2013-0050633
`
`(19) Korean Patent Office (KR)
`(12) Korean Unexamined Patent Application Publication (A)
`
`(11) Korean Patent Laid-Open Publication No.
`10-2013-0050633
`(43) Publication Date: May 16, 2013
`
`(51) Int. Cl.
`H05K 9/00 (2006.01) H01Q 17/00 (2006.01)
`H02H 17/00 (2006.01)
`(21) Application No.: Korean Patent Application No.
`10-2011-0115812
`
`(22) Filing Date: November 8, 2011
`Date of Request for Examination: Not filed
`
`(73) Applicant
`AMOSENSE Co., Ltd.
`Cheonan 4th Regional Industrial Complex 19-1
`Block, 4sandan 5-gil 90, Jiksan-eup,
`Seobuk-gu, Cheonan-si, Chungcheongnam-do
`(72) Inventor
`Gil-jae, Jang
`Tongil-ro 68-gil 11 (Bulgwang-dong),
`Eunpyeong-gu, Seoul
`
`Dong-hoon, Lee
`Sunny Valley Apartment 109-1102,
`Jigok-dong, Giheung-gu, Yongin-si,
`Gyeonggi-do
`Dong-geun Lee
`Dongho Sky 501 (Bulgwang-dong),
`Bulgwang-ro 149, Eunpyeong-gu, Seoul
`(74) Agent
`Jae-Hwa Lee
`
`Total Number of Claims: 23
`
`(54) Title of the invention: HYBRID MAGNETIC FIELD SHIELDING SHEET, ANTENNA DEVICE, AND
`
`PORTABLE TERMINAL EQUIPMENT USING THE SAME.
`
`(57) Abstract
`
`The present invention relates to a hybrid magnetic field shielding sheet capable of minimizing an
`influence on an azimuth of a geomagnetic sensor embedded for azimuth display of a portable
`terminal equipment, blocking an influence of a magnetic field, which is generated when
`implementing various additional functions such as a near field communication (NFC), a radio
`frequency identification (RFID), a wireless charger, and a pen tablet in the portable terminal
`equipment in a contactless (wireless) manner, on the portable terminal equipment, and absorbing
`electromagnetic waves necessary for performing the additional functions, by configuring an
`auxiliary magnetic sheet having a low magnetic permeability in combination with a main magnetic
`sheet having a high magnetic permeability at an outer side of the main magnetic sheet, and an
`antenna device and a portable terminal equipment using the same.
`
`The hybrid magnetic field shielding sheet includes: a main magnetic sheet having a first magnetic
`permeability; and an auxiliary magnetic sheet surrounding at least a portion of an outer side of the
`main magnetic sheet and having a second magnetic permeability lower than the first magnetic
`permeability of the main magnetic sheet.
`
`Representative drawing- FIG. 6A
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`-1-
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`Petitioner Samsung and Google Ex-1009, 0001
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`

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`Published patent: 10-2013-0050633
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`Claims
`
`Claim 1
`
`A hybrid magnetic field shielding sheet comprising:
`a main magnetic sheet having a first magnetic permeability; and
`
`an auxiliary magnetic sheet surrounding at least a portion of an outer side of the main magnetic sheet and having a second
`
`magnetic permeability lower than the first magnetic permeability of the main magnetic sheet.
`
`Claim 2
`
`The hybrid magnetic field shielding sheet of claim 1, wherein the main magnetic sheet has a polygonal shape or a circular
`shape, and
`the auxiliary magnetic sheet has a shape of an infinite loop surrounding the outer side of the main magnetic sheet.
`
`Claim 3
`
`The hybrid magnetic field shielding sheet of claim 1, wherein the auxiliary magnetic sheet extends locally on one side of
`the main magnetic sheet or on a portion of the main magnetic sheet.
`
`Claim 4
`
`The hybrid magnetic field shielding sheet of claim 1, wherein the auxiliary magnetic sheet extends from the main magnetic
`sheet while overlapping the main magnetic sheet.
`
`Claim 5
`
`The hybrid magnetic field shielding sheet of any one of claims 1 to 4, wherein any one of an amorphous sheet, a ferrite
`sheet, a permalloy sheet, and a moly permalloy powder (MPP) sheet is used as the main magnetic sheet, and a polymer sheet
`made of magnetic powders and a resin is used as the auxiliary magnetic sheet.
`
`Claim 6
`
`The hybrid magnetic field shielding sheet of claim 1, wherein an amorphous ribbon made of any one of an Fe-based
`amorphous alloy, a Co-based amorphous alloy, and a Ni-based amorphous alloy is used as the amorphous sheet.
`
`Claim 7
`
`The hybrid magnetic field shielding sheet of any one of claims 1 to 4, wherein an amorphous sheet and a ferrite sheet are
`laminated in the main magnetic sheet.
`
`Claim 8
`
`An antenna device for a portable terminal equipment, comprising:
`a hybrid magnetic field shielding sheet including a main magnetic sheet having a first magnetic permeability and an
`
`auxiliary magnetic sheet surrounding at least a portion of an outer side of the main magnetic sheet and having a second
`magnetic permeability lower than the first magnetic permeability of the main magnetic sheet; and
`
`an antenna attached to one surface of the hybrid magnetic field shielding sheet so as to provide an additional function to the
`portable terminal equipment.
`
`Claim 9
`
`The antenna device for a portable terminal equipment of claim 8, wherein the antenna includes:
`an insulating substrate; and
`an antenna coil patterned with a conductive metal material on the insulating substrate.
`
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`-2 -
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`Petitioner Samsung and Google Ex-1009, 0002
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`

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`Published patent: 10-2013-0050633
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`Claim 10
`
`The antenna device for a portable terminal equipment of claim 9, wherein the insulating substrate is formed of a
`double-sided tape, and the antenna coil is formed on the double-sided tape in a transfer manner.
`
`Claim 11
`
`The antenna device for a portable terminal equipment of claim 10, wherein a protective film formed of a photo-imageable
`solder resist (PSR) or a PSI is formed on a surface of the double-sided tape on which the antenna coil is formed.
`
`Claim 12
`
`The antenna device for a portable terminal equipment of claim 8, wherein the additional function for the portable terminal
`equipment is any one of a near field communication (NFC), a radio frequency identification (RFID), a wireless charging
`function, and a pen tablet.
`
`Claim 13
`
`The antenna device for a portable terminal equipment of claim 12, wherein when the additional function for the portable
`terminal equipment is the NFC or the RFID, the main magnetic sheet is formed of a ferrite sheet.
`
`Claim 14
`
`The antenna device for a portable terminal equipment of claim 12, wherein when the additional function for the portable
`terminal equipment is the wireless charging function or the pen tablet, the main magnetic sheet is formed of an amorphous
`sheet.
`
`Claim 15
`
`The antenna device for a portable terminal equipment of claim 12, wherein when the additional function for the portable
`terminal equipment is the wireless charging function or the pen tablet and the NFC or the RFID, the hybrid magnetic field
`shielding sheet is formed of a laminate in which an amorphous sheet and a ferrite sheet are laminated.
`
`Claim 16
`
`The antenna device for a portable terminal equipment of claim 12, wherein when the additional function for the portable
`terminal equipment is the wireless charging function or the pen tablet and the NFC or the RFID, the hybrid magnetic field
`shielding sheet includes an amorphous sheet disposed at a central portion and a ferrite loop surrounding the amorphous sheet.
`
`Claim 17
`
`The antenna device for a portable terminal equipment of claim 15 or 16, wherein when the additional function for the
`portable terminal equipment is the wireless charging function or the pen tablet and the NFC or the RFID, the antenna includes
`a first antenna coil for the wireless charging function or the pen tablet and a second antenna coil for the NFC or the RFID
`simultaneously formed on one insulating substrate.
`
`Claim 18
`
`The antenna device for a portable terminal equipment of any one of claims 8 to 16, wherein the hybrid magnetic field
`shielding sheet is installed in a battery cover of the portable terminal equipment.
`
`Claim 19
`
`The antenna device for a portable terminal equipment of any one of claims 8 to 16, wherein the hybrid magnetic field
`shielding sheet is installed between a liquid crystal display (LCD) panel and a main printed circuit board (PCB) of the portable
`terminal equipment.
`
`Claim 20
`
`The antenna device for a portable terminal equipment of any one of claims 8 to 16, further comprising a geomagnetic
`sensor disposed at a distance from the auxiliary magnetic sheet of the hybrid magnetic field shielding sheet and detecting a
`geomagnetic field for azimuth display of the portable terminal equipment.
`
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`-3 -
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`Petitioner Samsung and Google Ex-1009, 0003
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`

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`Published patent: 10-2013-0050633
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`Claim 21
`
`A portable terminal equipment comprising:
`a portable terminal main body;
`
`a secondary battery supplying power to the portable terminal main body; and
`
`an antenna device coupled to the secondary battery to provide an additional function to the portable terminal equipment,
`
`wherein the antenna device includes:
`
`a hybrid magnetic field shielding sheet including a main magnetic sheet having a first magnetic permeability and an
`
`auxiliary magnetic sheet surrounding at least a portion of an outer side of the main magnetic sheet and having a second
`magnetic permeability lower than the first magnetic permeability of the main magnetic sheet; and
`
`an antenna attached to one surface of the hybrid magnetic field shielding sheet so as to provide an additional function to the
`portable terminal equipment.
`
`Claim 22
`
`The portable terminal equipment of claim 21, wherein the additional function for the portable terminal equipment is any
`one of a near field communication (NFC), a radio frequency identification (RFID), a wireless charging function, and a pen
`tablet.
`
`Claim 23
`
`A portable terminal equipment comprising a liquid crystal display (LCD) panel, a magnetic field shielding sheet, a main
`printed circuit board (PCB), and a secondary battery,
`
`wherein the magnetic field shielding sheet is a hybrid magnetic field shielding sheet including a main magnetic sheet
`having a first magnetic permeability and an auxiliary magnetic sheet surrounding at least a portion of an outer side of the main
`magnetic sheet and having a second magnetic permeability lower than the first magnetic permeability of the main magnetic
`sheet.
`
`
`
`
`Description
`
`Technical Field
`
`[0001] The present invention relates to a hybrid magnetic field shielding sheet, an antenna device, and a portable terminal equipment
`using the same, and more particularly, to a hybrid magnetic field shielding sheet capable of minimizing an influence on an
`azimuth of a geomagnetic sensor embedded for azimuth display of a portable terminal equipment, blocking an influence of a
`magnetic field, which is generated when implementing various additional functions such as a near field communication
`(NFC), a radio frequency identification (RFID), a wireless charger, and a pen tablet in the portable terminal equipment in a
`contactless (wireless) manner, on the portable terminal equipment, and absorbing electromagnetic waves necessary for
`performing the additional functions, an antenna device, and a portable terminal equipment using the same.
`
`Background Art
`
`[0004]
`
`[0002] Recently, various functions such as a radio frequency identification (RFID), a near field communication (NFC), a wireless
`charger, and an interactive pen tablet have been added to portable terminal equipment including mobile phones, tablet personal
`computers (PCs), and the like.
`[0003] The near field communication (NFC) is one of RFIDs, and refers to a technology of transmitting data between terminals at a
`short distance of 10 cm using a contactless short-range wireless communication module that uses a frequency band of 13.56
`Mz. The NFC is a manner for file transmission as well as mobile payment, and is widely used in supermarkets and general
`stores for transmission of product information or travel information for visitors, transportation, access control lock devices,
`business cards, and the like.
`In addition, ‘Android Beam’ provided in smartphones recently disclosed by Google LLC has provided a function of
`transferring photos, business cards, files, maps, websites, and the like from one phone to another phone as well as a mobile
`payment function as a near field communication (NFC)-based short-distance information transmission and reception function.
`[0005] Antennas serving as a primary coil or a secondary coil, respectively, are provided between a user’s portable terminal
`equipment and a main body (or a reader/writer) or another adjacent portable terminal equipment in order to perform wireless
`power transmission and/or wireless communication functions.
`In this case, since a voltage induced in the antenna serving as the secondary coil is determined by Faraday’s law and Lenz’s
`law, it is advantageous that an amount of magnetic flux interlinked with an antenna coil is large, in order to obtain a high
`voltage signal. The larger the amount of soft magnetic material included in the antenna coil and the higher the magnetic
`permeability of the material, the larger the amount of magnetic flux. In particular, since an RFID system is essentially
`contactless data communication, an absorber sheet made of a magnetic material having a high magnetic permeability is
`necessary in order to focus a radio electromagnetic wave generated from a reader antenna to a tag antenna.
`
`[0006]
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`-4 -
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`Petitioner Samsung and Google Ex-1009, 0004
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`

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`[0007]
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`Published patent: 10-2013-0050633
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`In addition, a magnetic field of 100 kHz to several tens of MHz is generated in the secondary coil provided in the portable
`terminal equipment when performing a near field communication (NFC) function with an RFID reader or an adjacent
`terminal.
`[0008] Therefore, in a portable terminal equipment having such an additional function, a magnetic field shielding sheet is necessarily
`used in order to prevent the magnetic field from affecting components (particularly, a battery) of the portable terminal
`equipment and maximize performance of the additional function by focusing the magnetic field.
`[0009] As such a magnetic field shielding sheet, a magnetic body such as an amorphous ribbon, ferrite, or a polymer sheet including
`magnetic powders is generally used. A magnetic field focusing effect for shielding the magnetic field and improving the
`performance of the additional function is good in the order of the amorphous ribbon having a high magnetic permeability, the
`ferrite, and the polymer sheet including the magnetic powder.
`[0010] Meanwhile, recently, in the portable terminal equipment, geomagnetic sensors have been widely adopted mainly in
`smartphones so as to implement azimuth display. However, since the portable terminal equipment to which the magnetic field
`shielding sheet is applied has a narrow space, the geomagnetic sensor should be disposed adjacent to the magnetic field
`shielding sheet. Therefore, a problem that the magnetic field shielding sheet distorts a geomagnetic field to decrease azimuth
`accuracy of the geomagnetic sensor occurs.
`[0011] When a polymer sheet having a low magnetic permeability is used, an influence on the azimuth accuracy of the geomagnetic
`sensor is small, but conversely, a magnetic field shielding effect and an electromagnetic wave focusing effect are low, such
`that other components of the portable terminal equipment are affected, and the performance of the additional function is also
`decreased.
`[0012] Korean Patent No. 10-523313 discloses an absorber for a radio frequency identification (RFID) antenna formed of a magnetic
`sheet having a composition selected from the group consisting of Fe-Si-B, Fe-Si-B-Cu-Nb, Fe-Zr-B, and Co-Fe-Si-B and
`including an amorphous alloy, and an RFID antenna and a radio identification device including the same.
`In addition, Korean Patent Laid-Open Publication No. 10-2010-111409 discloses a technology relating to a radio frequency
`identification (RFID) antenna that is capable of having a decreased thickness, improving a recognition distance of a radio
`frequency (RF) signal, and promoting stability of the signal by directly forming a radiator pattern on a magnetic sheet obtained
`by sintering ferrite or a magnetic sheet obtained by mixing and molding soft magnetic powders and a binder with each other to
`integrate the magnetic sheet and the radiator pattern with each other, and is thus capable of being manufactured in a simpler
`process than an existing structure in which an antenna and a magnetic sheet are manufactured separately and then combined
`with each other using an adhesive layer and having a decreased entire thickness, and a method of manufacturing the same.
`[0014] Meanwhile, in an antenna module having a laminated structure of an antenna coil, a magnetic core member, and a shield plate,
`the magnetic core member disposed at a central portion not only has a function of deriving communication performance of the
`antenna coil, but also has an electromagnetic blocking function for allowing the antenna coil so as not to be affected by the
`shield plate.
`[0015] However, it has been recognized that magnetic properties of the magnetic core member necessary to derive the
`communication performance required for the antenna coil and electrical properties of the magnetic core member satisfying the
`electromagnetic blocking function between the antenna coil and the shield plate do not necessarily coincide with each other,
`and Korean Patent Laid-Open Publication No. 10-2006-120631 discloses a technology of providing a magnetic core member
`having a configuration that may satisfy both the improvement of communication characteristics of the antenna coil and the
`sufficient electromagnetic shielding action from the shield plate, an antenna module, and a portable communication terminal
`including the same.
`In Korean Patent Laid-Open Publication No. 10-2006-120631, a first surface of the magnetic core member facing the antenna
`coil and a second surface of the magnetic core member facing the shield plate have different electrical properties.
`[0017] Korean Patent Laid-Open Publication No. 10-2010-31139 discloses a technology capable of preventing a magnetic flux
`generated from a power supply side spiral coil (primary coil) from being interlinked with a circuit board, a secondary battery,
`and the like, suppressing noise and heat generation due to an induced electromotive force (electromagnetic induction), and
`controlling an amount of change in inductance of the primary coil by the presence or absence of a secondary coil to improve
`resonance performance of a resonance circuit constituted by the primary coil and effectively controlling oscillation, by
`disposing a composite magnetic body including a plurality of magnetic sheets (magnetic ribbons) at at least one of a position
`between a spiral coil (power reception side spiral coil: secondary coil) and the secondary battery and a position of between a
`rectifier and the spiral coil.
`[0018] Meanwhile, in a case of a pen tablet disclosed recently, a function of exchanging information through communication with a
`terminal has been added to an existing pen role. Therefore, a pen for the pen tablet includes elements for communication
`embedded therein, and thus receives power in a contactless manner to drive a circuit.
`[0019] To this end, the pen tablet generates a magnetic field in a band of 100 to 200 kHz in a terminal using a wireless charging
`function to wirelessly transmit power to the pen for the pen tablet, thereby driving internal elements, and performs
`communication between the terminal and the pen using a frequency of 500 kHz or more.
`
`
`
`
`[0013]
`
`[0016]
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`-5 -
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`Petitioner Samsung and Google Ex-1009, 0005
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`

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`[0020] Accordingly, a shielding sheet is necessary in order to improve power transmission efficiency to the pen or a communication
`function of the pen and block an influence on components (mainly, a battery) inside the terminal. In this case, it is required to
`block an influence of the shielding sheet on an azimuth of a geomagnetic sensor disposed adjacent to the shielding sheet.
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`Published patent: 10-2013-0050633
`
`[Related Prior Art Documents]
`
`[Patent Documents]
`
`[0021]
`
`
`
`
`
`
`(Patent Document 0001) Korean Patent No. 10-523313 (registered on July 30, 2004)
`(Patent Document 0002) Korean Patent Laid-Open Publication No. 10-2010-111409 (published on October 15, 2010)
`(Patent Document 0003) Korean Patent Laid-Open Publication No. 10-2006-120631 (published on November 27, 2006)
`(Patent Document 0004) Korean Patent Laid-Open Publication No. 10-2010-31139 (published on March 19, 2010)
`Disclosure
`
`Technical Problem
`
`[0022] When the geomagnetic sensor is disposed adjacent to the magnetic field shielding sheet as described above, a problem that
`azimuth accuracy of the geomagnetic sensor is decreased has occurred, but none of the related arts proposed in the above
`registered patent and published patents did not provide a solution to such a problem.
`[0023] Therefore, the present invention has been proposed to solve the problem of the related arts described above, and an object of
`the present invention is to provide a hybrid magnetic field shielding sheet capable of minimizing an influence on an azimuth of
`a geomagnetic sensor embedded for azimuth display of a portable terminal equipment, blocking an influence of a magnetic
`field, which is generated when implementing various additional functions such as a near field communication (NFC), a radio
`frequency identification (RFID), a wireless charger, and a pen tablet in the portable terminal equipment in a contactless
`(wireless) manner, on the portable terminal equipment, and absorbing electromagnetic waves necessary for performing the
`additional functions, by configuring an auxiliary magnetic sheet having a low magnetic permeability in combination with a
`main magnetic sheet having a high magnetic permeability at an outer side of the main magnetic sheet, and an antenna device
`using the same.
`[0024] Another object of the present invention is to provide a hybrid magnetic field shielding sheet capable of simultaneously
`maximizing performance of low-frequency and high-frequency additional functions while blocking an influence on a portable
`terminal equipment even though the low-frequency and high-frequency additional functions are simultaneously implemented
`in the portable terminal equipment by using a multilayer magnetic sheet in which a magnetic sheet having low frequency
`dependence as a main magnetic sheet having a high magnetic permeability and a magnetic sheet having high frequency
`dependence are laminated, and a portable terminal equipment using the same.
`
`Technical Solution
`
`[0028]
`
`[0027]
`
`[0025] According to an aspect of the present invention, there is provided a hybrid magnetic field shielding sheet including: a main
`magnetic sheet having a first magnetic permeability; and an auxiliary magnetic sheet surrounding at least a portion of an outer
`side of the main magnetic sheet and having a second magnetic permeability lower than the first magnetic permeability of the
`main magnetic sheet.
`[0026] The main magnetic sheet may have a polygonal shape or a circular shape, and the auxiliary magnetic sheet may have a shape
`of an infinite loop surrounding the outer side of the main magnetic sheet having a rectangular shape or a square shape or extend
`locally on one side of the main magnetic sheet or on a portion of the main magnetic sheet.
`In this case, the auxiliary magnetic sheet may extend from the main magnetic sheet while overlapping the main magnetic
`sheet.
`In addition, any one of an amorphous sheet, a ferrite sheet, a permalloy sheet, and a moly permalloy powder (MPP) sheet may
`be used as the main magnetic sheet, and a polymer sheet made of magnetic powders and a resin may be used as the auxiliary
`magnetic sheet.
`[0029] Moreover, an amorphous ribbon made of any one of an Fe-based amorphous alloy, a Co-based amorphous alloy, and a
`Ni-based amorphous alloy may be used as the amorphous sheet.
`[0030]
`In addition, an amorphous sheet and a ferrite sheet may be laminated in the main magnetic sheet.
`[0031] According to another aspect of the present invention, there is provided an antenna device for a portable terminal equipment,
`including: a hybrid magnetic field shielding sheet including a main magnetic sheet having a first magnetic permeability and an
`auxiliary magnetic sheet surrounding at least a portion of an outer side of the main magnetic sheet and having a second
`magnetic permeability lower than the first magnetic permeability of the main magnetic sheet; and an antenna attached to one
`surface of the hybrid magnetic field shielding sheet so as to provide an additional function to the portable terminal equipment.
`
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`-6 -
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`Petitioner Samsung and Google Ex-1009, 0006
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`

`

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`Published patent: 10-2013-0050633
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`[0033]
`
`[0036]
`
`[0032] The antenna may include: an insulating substrate; and an antenna coil patterned with a conductive metal material on the
`insulating substrate.
`In this case, the insulating substrate may be formed of a double-sided tape, and the antenna coil may be formed on the
`double-sided tape in a transfer manner. In addition, a protective film formed of a photo-imageable solder resist (PSR) or a PSI
`may be formed on a surface of the double-sided tape on which the antenna coil is formed.
`[0034] The additional function for the portable terminal equipment may be any one of a near field communication (NFC), a radio
`frequency identification (RFID), a wireless charging function, and a pen tablet.
`[0035] When the additional function for the portable terminal equipment is the NFC or the RFID, the main magnetic sheet is formed
`of a ferrite sheet, and when the additional function for the portable terminal equipment is the wireless charging function or the
`pen tablet, the main magnetic sheet may be formed of an amorphous sheet.
`In addition, when the additional function for the portable terminal equipment is the wireless charging function or the pen tablet
`and the NFC or the RFID, the hybrid magnetic field shielding sheet may be formed of a laminate in which an amorphous sheet
`and a ferrite sheet are laminated or may include an amorphous sheet disposed at a central portion and a ferrite loop surrounding
`the amorphous sheet and having a shape of an infinite loop.
`[0037] Moreover, when the additional function for the portable terminal equipment is the wireless charging function or the pen tablet
`and the NFC or the RFID, the antenna may include a first antenna coil for the wireless charging function or the pen tablet and
`a second antenna coil for the NFC or the RFID simultaneously formed on one insulating substrate.
`[0038] The hybrid magnetic field shielding sheet may be installed in a battery cover of the portable terminal equipment or may be
`installed between a liquid crystal display (LCD) panel and a main printed circuit board (PCB) of the portable terminal
`equipment.
`In this case, a geomagnetic sensor detecting a geomagnetic field for azimuth display of the portable terminal equipment may
`be disposed at a distance from the auxiliary magnetic sheet of the hybrid magnetic field shielding sheet.
`[0040] According to still another aspect of the present invention, there is provided a portable terminal equipment including: a portable
`terminal main body; a secondary battery supplying power to the portable terminal main body; and an antenna device coupled
`to the secondary battery to provide an additional function to the portable terminal equipment, wherein the antenna device
`includes: a hybrid magnetic field shielding sheet including a main magnetic sheet having a first magnetic permeability and an
`auxiliary magnetic sheet surrounding at least a portion of an outer side of the main magnetic sheet and having a second
`magnetic permeability lower than the first magnetic permeability of the main magnetic sheet; and an antenna attached to one
`surface of the hybrid magnetic field shielding sheet so as to provide an additional function to the portable terminal equipment.
`[0041] The additional function for the portable terminal equipment may be any one of a near field communication (NFC), a radio
`frequency identification (RFID), a wireless charging function, and a pen tablet.
`[0042] According to yet still another aspect of the present invention, there is provided a portable terminal equipment including a
`liquid crystal display (LCD) panel, a magnetic field shielding sheet, a main printed circuit board (PCB), and a secondary
`battery, wherein the magnetic field shielding sheet is a hybrid magnetic field shielding sheet including a main magnetic sheet
`having a first magnetic permeability and an auxiliary magnetic sheet surrounding at least a portion of an outer side of the main
`magnetic sheet and having a second magnetic permeability lower than the first magnetic permeability of the main magnetic
`sheet.
`
`[0039]
`
`Effect of Invention
`
`[0043] As described above, according to the present invention, it is possible to minimize an influence on an azimuth of a geomagnetic
`sensor embedded for azimuth display of a portable terminal equipment, block an influence of a magnetic field, which is
`generated when implementing various additional functions such as a near field communication (NFC), a radio frequency
`identification (RFID), a wireless charger, and a pen tablet in the portable terminal equipment in a contactless (wireless)
`manner, on the portable terminal equipment, and absorb electromagnetic waves necessary for performing the additional
`functions, by configuring an auxiliary magnetic sheet having a low magnetic permeability in combination with a main
`magnetic sheet having a high magnetic permeability at an outer side of the main magnetic sheet.
`In addition, according to the present invention, it is possible to simultaneously maximize performance of low-frequency and
`high-frequency additional functions while blocking an influence on a portable terminal equipment even though the
`low-frequency and high-frequency additional functions are simultaneously implemented in the portable terminal equipment
`by using a multilayer magnetic sheet in which a magnetic sheet having low frequency dependence as a main magnetic sheet
`having a high magnetic permeability and a magnetic sheet having high frequency dependence are laminated.
`
`
`[0044]
`
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`-7 -
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`Petitioner Samsung and Google Ex-1009, 0007
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`

`

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`Published patent: 10-2013-0050633
`
`[0045]
`
`Brief Description of the Drawings
`
`FIG. 1 is an exploded perspective view illustrating a structure in which a hybrid magnetic field shielding sheet according to the
`present invention is applied to a near field communication (NFC) antenna.
`FIG. 2 is an exploded perspective view illustrating that the NFC antenna illustrated in FIG. 1 is formed on a battery cover
`together with a magnetic field shielding sheet and assembled to a portable terminal equipment.
`FIG. 3 is an exploded perspective view illustrating a structure in which a hybrid magnetic field shielding sheet according to the
`present invention is applied to a wireless charger.
`FIG. 4 is a plan view illustrating a dual antenna structure in which an NFC antenna and an antenna for a wireless charger are
`formed using a flexible printed circuit board (FPCB).
`FIG. 5 is an exploded perspective view illustrating a structure in which a hybrid magnetic field shielding sheet according to the
`present invention is applied to a pen tablet terminal.
`FIGS. 6A and 6B are, respectively, a perspective view and a cross-sectional view illustrating a hybrid magnetic field shielding
`sheet according to a first embodiment of the present invention.
`FIGS. 7A and 7B are, respectively, a perspective view and a cross-sectional view illustrating a hybrid magnetic field shielding
`sheet according to a second embodiment of the present invention.
`FIGS. 8A and 8B are, respectively, a perspective view and a cross-sectional view illustrating a hybrid magnetic field shielding
`sheet according to a third embodiment of the present invention.
`
`
`
`Best Mode
`
`[0047]
`
`[0048]
`
`[0046] The above-described objects, features, and advantages will become more obvious from the following description to be
`described below in detail with reference to the accompanying drawings. Accordingly, those skilled in the art to which the
`present invention pertains may easily practice a technical spirit of the present invention.
`Further, in describing the present invention, when it is decided that a detailed description of the well-known technology
`associated with the present invention may unnecessarily make the gist of the present invention unclear, it will be omit