MAI MULT MAI MULT DE UN MILTON ON OUR
`
`US009843215B2
`
`( 12 ) United States Patent
`Yeom et al .
`
`( 10 ) Patent No . :
`( 45 ) Date of Patent :
`
`US 9 , 843 , 215 B2
`Dec . 12 , 2017
`
`( 54 ) WIRELESS CHARGING AND
`COMMUNICATION BOARD AND WIRELESS
`CHARGING AND COMMUNICATION
`DEVICE
`( 71 ) Applicant : LG INNOTEK CO . , LTD . , Seoul ( KR )
`( 72 ) Inventors : Jai Hoon Yeom , Seoul ( KR ) ; Sang
`Won Lee , Seoul ( KR ) ; Seok Bae , Seoul
`( KR ) ; So Yeon Kim , Seoul ( KR ) ; Jin
`Mi Noh , Seoul ( KR ) ; Ji Yeon Song ,
`Seoul ( KR ) ; Hee Jung Lee , Seoul ( KR )
`( 73 ) Assignee : LG INNOTEK CO . , LTD . , Seoul ( KR )
`( * ) Notice :
`Subject to any disclaimer , the term of this
`patent is extended or adjusted under 35
`U . S . C . 154 ( b ) by 21 days .
`( 21 ) Appl . No . : 14 / 636 , 347
`( 22 ) Filed :
`Mar . 3 , 2015
`( 65 )
`Prior Publication Data
`US 2015 / 0256023 A1
`Sep . 10 , 2015
`Foreign Application Priority Data
`( 30 )
`Mar . 4 , 2014
`( KR ) . . . . . . . . . . . . . . . . . . . . . 10 - 2014 - 0025290
`( 51 )
`Int . CI .
`HO2J 7700
`( 2006 . 01 )
`( 2016 . 01 )
`HO2J 7 / 02
`HO2J 5 / 00
`( 2016 . 01 )
`H02J 50 / 10
`( 2016 . 01 )
`U . S . CI .
`CPC . . . . . . . . . . . . . H02J 77025 ( 2013 . 01 ) ; HO2J 5 / 005
`( 2013 . 01 ) ; H02J 770042 ( 2013 . 01 ) ; H02J
`50 / 10 ( 2016 . 02 )
`
`( 52 )
`
`. . . . . . . . . . .
`
`( 56 )
`
`( 58 ) Field of Classification Search
`. . 320 / 108
`USPC
`See application file for complete search history .
`References Cited
`U . S . PATENT DOCUMENTS
`6 , 331 , 763 B1 * 12 / 2001 Thomas . . . . . . . . . . . . . . . . HO2H 9 / 042
`320 / 136
`2006 / 0266435 A1 * 11 / 2006 Yang . . . . . . . . . . . . . . . . GO6K 19 / 07771
`148 / 105
`2011 / 0210696 AL
`9 / 2011 Inoue
`2015 / 0077296 A1 *
`3 / 2015 An
`H01Q 1 / 22
`343 / 720
`2015 / 0123604 AL
`5 / 2015 Lee et al .
`2015 / 0256023 A1 *
`9 / 2015 Yeom . . .
`HO2J 5 / 005
`. . . . . . . . . . .
`320 / 108
`
`FOREIGN PATENT DOCUMENTS
`10 - 2013 - 0072181 A
`7 / 2013
`
`KR
`
`OTHER PUBLICATIONS
`Extended European Search Report issued in Application No .
`15157518 . 0 dated Jul . 30 , 2015 .
`* cited by examiner
`Primary Examiner — Samuel Berhanu
`( 74 ) Attorney , Agent , or Firm — KED & Associates , LLP
`( 57 )
`ABSTRACT
`Provided are a wireless charging and communication board ,
`and a wireless charging and communication device , the
`wireless charging and communication board including : a
`soft magnetic layer ; a polymeric material layer arranged on
`one surface and the other surface of the soft magnetic layer
`and extending longer than an exposed portion of the soft
`magnetic layer ; and a coil pattern arranged on the polymeric
`material layer .
`22 Claims , 6 Drawing Sheets
`
`310
`
`220
`J
`
`311
`
`313 313
`
`313
`
`220 310
`
`230
`
`H
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`D
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`130
`
`312
`
`- 140
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`- 140
`
`M111 e 313 318
`120
`
`312
`
`2000
`WWW . XB
`
`- 120
`
`110
`
`- 130
`
`115
`
`116
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`U . S . Patent
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`Dec . 12 , 2017
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`Sheet 1 of 6
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`US 9 , 843 , 215 B2
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`FIG . 1
`
`311
`
`220
`
`220
`
`G
`
`WITH
`
`120 520
`
`400
`
`310
`315
`230
`315
`NO 0
`312
`- 135
`
`130 530
`
`600
`
`> 500
`
`550
`
`535
`FIG . 2
`
`220
`
`220
`
`310
`315
`230
`- 315
`- 312
`- 135
`
`120
`
`130
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`U . S . Patent
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`Dec . 12 , 2017
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`Sheet 2 of 6
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`US 9 , 843 , 215 B2
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`FIG . 3
`220 310311310
`311
`310
`/ 313
`/ 313
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`315
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`230
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`31 3 313
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`FIG . 4
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`220
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`| | | | | |
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`120
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`220 ?? - 310
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`130
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`- 230
`312
`135
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`130
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`FIG . 5
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`? 310
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`220
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`311
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`313
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`313 313
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`220 310
`310
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`312
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`120
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`* 313313
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`3
`
`312
`
`130
`
`230
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`U . S . Patent
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`Dec . 12 , 2017
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`Sheet 3 of 6
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`US 9 , 843 , 215 B2
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`FIG . 6
`
`140
`
`O - 120
`
`4110
`130
`
`116
`
`115
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`FIG . 7
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`0000
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`140
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`1220 220
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`- 230
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`U . S . Patent
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`Dec . 12 , 2017
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`Sheet 4 of 6
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`? US 9 , 843 , 215 B2
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`FIG . 8
`| 310 , 312
`
`311
`
`FIG . 9
`311
`
`220
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`| 223
`
`- 310
`- 315
`- 230
`- 230
`315
`312
`| UT 135
`- 135
`220 220
`\
`130
`
`|
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`U . S . Patent
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`Dec . 12 , 2017
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`Sheet 5 of 6
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`US 9 , 843 , 215 B2
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`Dia
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`220
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`220
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`FIG . 10
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`220
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`313
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`FIG . 11
`
`BEFORE TEST FOR
`HELIABILITY
`TRANSMISSION
`RECOONMION
`EFFICIENCY ( % )
`DISTANCE ( mm )
`69 : 42
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`AFTER TEST FOR
`RELIABILITY
`TRANSMISSION
`RECOGNTION
`EFFIOIENCY
`DISTANCE ( m )
`09 : 38
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`NAWA * 444
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`U . S . Patent
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`Dec . 12 , 2017
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`Sheet 6 of 6
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`US 9 , 843 , 215 B2
`
`FIG . 12
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`EFFICIENCY ( % ) ??????? TRANSMISSION
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`TRANSMISSION EFFICIENCY ( % )
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`FIG . 13
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`CONNECTOR FERRITE ( mm )
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`US 9 , 843 , 215 B2
`
`20
`20
`
`FIG . 3 is a cross - sectional view of a wireless charging and
`WIRELESS CHARGING AND
`communication board according to another embodiment of
`COMMUNICATION BOARD AND WIRELESS
`the present application ;
`CHARGING AND COMMUNICATION
`DEVICE
`FIGS . 4 and 5 are cross - sectional views of a wireless
`5 charging and communication board according to a further
`embodiment of the present application ;
`CROSS - REFERENCE TO RELATED
`FIG . 6 is a top view illustrating coil patterns according to
`APPLICATION
`one embodiment of the present application ;
`FIG . 7 is a top view illustrating a soft magnetic layer
`This application claims priority under 35 U . S . C . $ 119 to
`Korean Application No . 10 - 2014 - 0025290 , filed on Mar . 4 . 10 according to one embodiment of the present application ;
`FIG . 8 is a top view illustrating a polymeric material layer
`2014 , in the Korean Intellectual Property Office , whose
`according to one embodiment of the present application ;
`entire disclosure is hereby incorporated by reference .
`FIGS . 9 and 10 are cross - sectional views of a wireless
`charging and communication board according to yet another
`BACKGROUND OF THE INVENTION
`15 embodiment of the present application ;
`FIGS . 11 to 13 are view illustrated for explaining trans
`1 . Field
`mission efficiency and a recognition distance of the wireless
`Embodiments of the present application relate to a wire
`charging and communication board according to one
`less charging and communication board and a wireless
`embodiment of the present application .
`charging and communication device .
`2 . Background
`DETAILED DESCRIPTION
`As one of radio frequency tag identification ( RFID )
`H
`ereinafter , the embodiments of the present application
`technologies , near field communication ( NFC ) is a smart
`that an ordinary person skilled in the art can implement will
`card type contactless communication technology using a
`frequency band of 13 . 56 MHz . As a wireless charging 25 be described with reference to the accompanying drawings .
`technology , wireless power conversion ( WPC ) is a contact
`The embodiments in the specification and the constructions
`less charging technology for charging a battery using mag
`shown in the drawings are provided as a preferred embodi
`netic coupling at a short range without electrical contact
`ment of the present application , and it should be understood
`NFC is a next - generation near field communication tech -
`that there may be various equivalents and modifications
`nology which receives attention because NFC enables wire - 30 which could substitute at the time of filing . In addition , when
`it comes to the operation principle of the preferred embodi
`less communication between electrical devices at a short
`ments of the present application , when the known functions
`range with low power and has relatively excellent security
`or functions are seemed to make unclear the subject matters
`due to the short communication range and a low price .
`of the present application , they will be omitted from the
`Furthermore , it is advantageous in that NFC has a bidirec 435 descriptions of the invention . The terms below are defined in
`tional property and a large storage memory space compared
`consideration of the functions of the present application , and
`to a smart card , and the range of applicable services is wide .
`the meaning of each term should be interpreted by judging
`Also , it is advantageous in that WPC can be applied to
`the whole parts of the present specification , and the elements
`various fields regarding battery charging because WPC
`having the similar functions and operations of the drawings
`enables battery charging via magnetic coupling without 40 are given the same reference numerals . As used herein , the
`electrical contact .
`singular forms are intended to include the plural forms as
`An antenna used in the NFC or WPC system includes a
`well , unless the context clearly indicates otherwise .
`FIG . 1 is a cross - sectional view of a wireless charging and
`coil having a fixed area and receives necessary energy for
`the operation of a microchip from a reader . A magnetic field
`communication device according to one embodiment of the
`is formed by alternating current power energy generated 45 present application .
`from a primary coil so that electrical currents passing
`wireless charging and communication device according
`through the coil of the antenna can be abandoned , and a
`to one embodiment of the present application will be here
`voltage is generated by an inductance of the antenna . The
`inafter described with reference to FIG . 1 .
`voltage is used as power for data transmission or is used in
`The wireless charging and communication device accord
`charging a battery .
`50 ing to the present embodiment of the invention may be
`As a smart terminal has widely come into wide use , the
`included for wireless power conversion ( WPC ) and near
`need of a device capable of providing both the NFC and
`field communication ( NFC ) .
`WPC has been increased . Thus , the development of a device
`As illustrated in FIG . 1 , the wireless charging and com
`having high charging efficiency and a sufficient long recog -
`munication device according to the present embodiment of
`nition distance upon data communication has been required . 55 the invention may include a receiver 100 and a transmitter
`500 .
`BRIEF DESCRIPTION OF THE DRAWINGS
`The receiver 100 and the transmitter 500 may enable
`wireless power conversion ( WPC ) and near field communi
`The embodiments will be described in detail with refer -
`cation ( NFC ) .
`The receiver 100 may include a reception coil pattern 120 ,
`ence to the following drawings in which like reference 60
`130 , wherein the first reception coil pattern 120 is a coil
`numerals refer to like elements wherein :
`FIG . 1 is a cross - sectional view of a wireless charging and
`pattern for wireless power conversion ( WPC ) , and the
`communication device according to one embodiment of the
`second reception coil pattern 130 is a coil pattern for near
`present application ;
`field communication ( NFC ) .
`FIG . 2 is a cross - sectional view of a wireless charging and 65
`Also , the transmitter 500 may include a transmission coil
`communication board according to one embodiment of the
`pattern 520 , 530 , wherein the first transmission coil pattern
`present application ;
`520 is a coil pattern for wireless power conversion ( WPC ) ,
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`US 9 , 843 , 215 B2
`and the second transmission coil pattern 530 is a coil pattern
`on the second polymeric material layer 312 corresponding to
`the second soft magnetic layer 230 .
`for near field communication ( NFC ) .
`The first transmission coil pattern 520 is connected to a
`The transmitter 500 may include : a soft magnetic layer
`power source ( not drawn ) , and the first reception coil
`550 ; a transmission coil pattern 520 , 530 attached to the soft
`patterns 120 is connected to a circuit part ( not drawn ) .
`5 magnetic layer 550 via an adhesive layer 535 ; and a housing
`The power source may be an alternating current power
`600 .
`source providing an alternating current having a predeter -
`Accordingly , according to the present embodiment of the
`mined frequency . An alternating current flows through the
`invention , both the constitution including the first soft mag
`first transmission coil patterns 520 by power supplied from
`etic layer 220 and the first coil pattern ( 120 ) and capable of
`enabling wireless power conversion ( WPC ) and the consti
`the power source ( not drawn ) .
`When the alternating current flows through the first trans -
`tution including the second soft magnetic layer 230 and the
`second coil pattern 130 and capable of enabling near field
`mission coil pattern 520 , the alternating current is also
`induced to the first reception coil pattern 120 spaced apart
`communication ( NFC ) may be included , and both the WPC
`from the first transmission coil pattern 520 by electromag - 15 and NFC may be provided .
`Meanwhile , in another embodiment , the first transmission
`netic induction .
`The current induced to the reception coil pattern 120 is
`coil pattern 520 may be composed of a coil pattern for near
`field communication ( NFC ) , and the second transmission
`transmitted to the separate circuit part ( not drawn ) and is
`coil pattern 530 may be composed of a coil pattern for
`then rectified .
`Meanwhile , the transmitter 500 according to the present 20 wireless power conversion ( WPC ) .
`embodiment of the invention may be composed of a trans
`FIG . 2 is a cross - sectional view of a wireless charging and
`mission pad , and the receiver 100 may be constituted as an
`communication board according to one embodiment of the
`element for a portable terminal , a home / personnel electronic
`present application .
`product , a transportation means and the like to which
`As illustrated in FIG . 2 , a wireless charging and commu
`wireless power conversion is applied . The portable terminal , 25 nication board according to one embodiment of the present
`application may include : a soft magnetic layer 220 , 230 ; a
`the home / personnel electronic product , the transportation
`means and the like to which wireless power conversion is
`polymeric material layer 310 312 arranged on one surface
`applied may include only a wireless power receiver or may
`and the other surface of the soft magnetic layer 220 , 230 and
`include both a wireless power transmitter and a wireless
`extending longer than an exposed portion of the soft mag
`power receiver .
`netic layer 220 , 230 ; and a coil pattern 120 , 130 arranged on
`That is , the transmitter 500 may serve as a reader , and the
`the polymeric material layer 310 , 312 .
`receiver 100 may serve as a tag .
`Also , the polymeric material layer 310 , 312 may include
`The receiver 100 may include a wireless charging and
`a first polymeric material layer 310 and a second polymeric
`communication board and a housing 400 in which the
`The 35 material layer 312 ; the soft magnetic layer 220 , 230 may
`wireless charging and communication board is received . The 35 ma
`include a first soft magnetic layer 220 and a second magnetic
`housing 400 may radiate heat generated from the coil pattern
`layer 230 ; and the coil pattern 120 , 130 may include a first
`120 , 130 to the outside .
`coil pattern 120 and a second coil pattern 130 .
`Meanwhile , the wireless charging and communication
`Also , an extending portion length 1 of a first polymeric
`board may include : a soft magnetic layer 220 , 230 ; a
`in material layer 310 or a second polymeric material layer 312
`polymeric material layer 310 , 312 disposed on one surface 401
`and a thickness h of the magnetic soft material layer 220 ,
`and the other surface of the soft magnetic layer 220 , 230 and
`230 may be formed to have a relation of the following
`extending longer than an exposed portion of the soft mag
`Equation 1 .
`netic layer 220 , 230 ; the coil pattern 120 , 130 ; and a
`processing hole 311 passing through the wireless charging
`[ Equation 1 ]
`I = Axh
`and communication board and used in performing aligning . 45
`At this time , 1 represents an extending portion length of
`Also , the polymeric material layer 310 , 312 may include
`the first polymeric material layer 310 or the second poly
`a first polymeric material layer 310 arranged on one surface
`meric material layer 312 , h represents a thickness of the soft
`of the soft magnetic layer 220 , 230 , and a second polymeric
`magnetic layer 220 , 230 , and A represents a constant of 0 . 6
`material layer 321 arranged on the other surface of the soft
`magnetic layer 220 , 230 .
`50 to
`10 . When the value of A is less than 0 . 6 , the polymeric
`material layer 310 , 312 may not sufficiently surround the
`At this time , the polymeric material layer 310 , 312 may be
`soft magnetic layer 220 , 230 , so that moisture can penetrate .
`made with a black film . The polymeric material layer 310 ,
`When the value of A is more than 10 , the polymeric material
`312 may be adhered to the soft magnetic layer 220 , 230 via
`layer 310 , 312 may excessively extend so that the polymeric
`an adhesive layer 315 . The polymeric material layer 310 ,
`312 may contain any one material of polyethylene , poly - 55 material layer can be easily bent and damaged by an external
`acrylic , polyimide , polyamide , and polyurethane .
`impact , or a thickness can be increased because a separate
`Meanwhile , the soft magnetic layer 220 , 230 may be
`receiving part should be added .
`configured such that , on the same plane on which the first
`Also , the first soft magnetic layer 220 and the second soft
`soft magnetic layer 220 and the second soft magnetic layer
`magnetic layer 230 may be made of different materials . For
`230 are arranged , the second soft magnetic layer 230 is 60 example , the first soft magnetic layer 220 may be made with
`arranged around the first soft magnetic layer 220 , more
`an amorphous ribbon , and the second soft magnetic layer
`specifically , the second soft magnetic layer 230 is disposed
`230 may be made of any one material of a composite , a
`to surround the first soft magnetic layer 220 .
`ferrite , a Ni - Zn material , and a Mn — Zn material .
`Also , the coil pattern 120 , 130 may include the first coil
`When the first soft magnetic layer 220 is made with an
`pattern 120 arranged in a region on the second polymeric 65 amorphous ribbon , high permeability can be implemented in
`material layer 312 corresponding to the first soft magnetic
`an operating frequency of 100 to 200 kHZ . When the second
`layer 220 , and second coil pattern 130 arranged in a region
`soft magnetic layer 230 is made of any one material of a
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`US 9 , 843 , 215 B2
`composite , a ferrite , a Ni — Zn material , and a Mn — Zn
`the exposed portion of an end for connecting the lead frame
`material , data loss generated during communication can be
`may be also identically configured .
`FIG . 6 is a top view illustrating coil patterns according to
`reduced .
`When the soft magnetic layer 120 is made of a ferrite
`one embodiment of the present application , more specifi
`material , the soft magnetic layer may be implemented in
`5 cally , a view illustrating wireless charging and communica
`t form , å plate form , a ribbon
`tion board included in a receiver according to one embodi
`various forms such as a pellet form , a plate form , a ribbon
`ment of the present application .
`form , a foil form , a film form and the like . Also , the soft
`FIG . 7 is a top view illustrating a soft magnetic layer
`magnetic layer 120 may contain at least one of Fe , Ni , Co ,
`according to one embodiment of the present application and
`Mn , A1 , Zn , Cu , Ba , Ti , Sn , Sr , P , B , N , C , W , Cr , Bi , Li , Y
`10 FIG . 8 is a top view illustrating a polymeric material layer
`and Cd .
`according to one embodiment of the present application .
`The coil pattern 120 , 130 may include the first coil pattern
`The coil pattern 120 , 130 may be adhered to the polymeric
`120 arranged in a region on the polymeric material layer 310
`material layer 310 via the adhesive layer 135 as shown in
`corresponding to the first soft magnetic layer 220 , and the
`FIG . 2 , or may be disposed on a separate substrate 110 as
`second coil pattern 130 arranged in a region on the poly - 15 shown in FIG 6 .
`meric material layer 310 corresponding to the second soft
`As illustrated in FIG . 6 . align marks 115 . 116 for enabling
`m
`magnetic layer 230 .
`aligning upon the wireless charging and communication
`At this time , as illustrated in FIG . 2 , the coil pattern 120 ,
`board may be formed on the substrate 110 .
`130 may be adhered to the polymeric material layer 310 via
`Also , as illustrated in FIGS . 7 and 8 , the wireless charging
`an adhesive layer 135 .
`20 and communication board may further include a lead frame
`FIG . 3 is a cross - sectional view of a wireless charging and
`140 connected to the coil pattern 120 , 130 , and the second
`communication board according to another embodiment of
`soft magnetic layer 230 may be disposed to surround the
`the present application .
`lead frame 140 .
`As illustrated in FIG . 3 , a wireless charging and commu -
`More specifically , as shown in FIG . 4 , the second soft
`nication board according to the present embodiment of the 25 magnetic layer 230 may be disposed to surround the lead
`invention includes : a soft magnetic layer 220 , 230 ; a poly -
`frame 140 at a regular interval of 1 to 3 mm . As such , when
`meric material layer 310 , 312 arranged on one surface and
`the second soft magnetic layer 230 is disposed to surround
`the other surface of the soft magnetic layer 220 , 230 , and
`the lead frame 140 at the regular interval , even though the
`extending longer than an exposed portion of the soft mag -
`lead frame 140 is disposed , the problem of a reduction in
`netic layer 220 , 230 ; and a coil pattern 120 , 130 arranged on 30 transmission efficiency upon charging or a reduction in a
`the polymeric material layer 310 , 312 .
`recognition distance upon data communication can be pre
`However , in the embodiment of FIG . 3 , the wireless
`vented .
`Also , in the exposed portion of an end for connecting the
`charging and communication board further includes a poly .
`meric material connector 313 intended for connecting the
`lead frame 140 , the polymeric material layer 310 , 312
`first polymeric material layer 310 and the second polymeric 35 extending longer than the soft magnetic layer 220 , 230 may
`material layer 312 and surrounding the exposed portion of
`be formed as shown in FIG . 2 , or the polymeric material
`the soft magnetic layer 220 . In this specification , a term of
`connector 313 surrounding an end of the polymeric material
`the polymeric material connector 313 can be used with a
`layer 310 , 312 may be formed as shown in FIG . 3 .
`term of the extending portion . That is , a first extending
`The polymeric material layer 310 , 312 of FIG . 8 may be
`portion may be extended in the first polymeric material layer 40 disposed on one surface and the other surface of the first and
`310 , and a second extending portion may be extended in die
`second soft magnetic layers 220 , 230 . The polymeric mate
`rial layer 310 , 312 may be disposed to be adhered to the first
`second polymeric material layer 312 .
`Accordingly , in the embodiment of FIG . 3 , the exposed
`and second magnetic layer 220 , 230 via the adhesive layer
`portion may refer to an end exposed by a processing hole
`315 .
`311 , and the polymeric material connector 313 surrounding 45
`Also , the processing hole 311 may be formed in the
`the exposed portion of the soft magnetic layer 220 may
`polymeric material layer 310 , 312 and the soft magnetic
`prevent water penetration from the outside .
`layer 220 .
`FIGS . 4 and 5 are cross - sectional views of a wireless
`The processing hole 311 may perform aligning with the
`charging and communication board according to a further
`align marks 115 , 116 of FIG . 6 upon manufacturing the
`embodiment of the present application .
`50 wireless charging and communication board .
`According to the embodiment of FIGS . 4 and 5 , the
`FIGS . 9 and 10 are cross - sectional views of a wireless
`polymeric material layer 310 , 312 may be directly formed on
`charging and communication board according to yet another
`the soft magnetic layer 220 , 230 without forming an adhe -
`embodiment of the present application .
`sive layer 315 for adhering the polymeric material layer 310 ,
`The wireless charging and communication board accord
`312 to the soft magnetic layer 220 , 230 .
`55 ing to the present embodiment of the invention of FIGS . 9
`At this time , the polymeric material layer 310 , 312 may be
`and 10 may be configured such that the soft magnetic layer
`directly formed on the soft magnetic layer 220 , 230 via
`220 , 230 is adhered onto one surface and the other surface
`of the adhesive layer 223 , respectively .
`thermal compression bonding .
`Like the embodiment of FIGS . 4 and 5 , when the poly -
`According to the embodiment of the invention of FIGS . 9
`meric material layer 310 , 312 is directly formed on the soft 60 and 10 , the soft magnetic layer 220 , 230 may be added in
`magnetic layer 220 , 230 , there is no need to use an adhesive
`plural numbers so that transmission efficiency upon charging
`layer so that a process can be simplified , a production cost
`can be adjusted or improved , a recognition distance upon
`can be reduced , and the wireless charging and communica
`data communication can be adjusted .
`tion board can be more thinly produced
`FIGS . 11 to 13 are view illustrated for explaining trans
`Meanwhile , in the embodiments of FIGS . 2 to 6 , a cross 65 mission efficiency and a recognition distance of the wireless
`section of the processing hole of the wireless charging and
`charging and communication board according to one
`communication board has been explained as an example , but
`embodiment of the present application .
`
`Ex.1001
`APPLE INC. / Page 10 of 13
`
`

`

`US 9 , 843 , 215 B2
`More specifically , FIG . 11 is a table showing the com -
`According to an aspect of embodiments of the present
`parison of charges in transmission efficiency and a recog -
`invention , a wireless charging and communication board
`nition distance according to a conventional art and the
`may include : a plurality of soft magnetic layers ; a first
`embodiment of the present application , FIG . 12 is a graph
`polymeric material layer arranged on one surface of the
`illustrating a charge in transmission efficiency resulting from
`5 plurality of the soft magnetic layers ; a second polymeric
`material layer arranged on the other surface opposed to the
`a change in a diameter of the processing hole according to
`one surface ; and a coil pattern arranged on the second
`the embodiment of the present application , and FIG . 13 is a
`one
`polymeric material layer , wherein the plurality of soft mag
`graph illustrating a change in transmission efficiency result
`netic layers are disposed between the first polymeric mate
`ing from a distance of the soft magnetic layers according to
`10 rial layer and the second polymeric material layer , wherein
`the embodiment of the present application .
`the first polymeric material layer comprises a first extending
`According to the present embodiment of the invention , as
`portion extending longer than the plurality of the soft
`illustrated in FIG . 11 , comparing embodiment A in which the
`magnetic layers ; wherein the second polymeric material
`second soft magnetic layer does not surround around the
`layer comprises a second extending portion extending longer
`lead frame , and a processing hole is not formed , and 15 than the plurality of the soft magnetic layers , and wherein
`embodiment B in which the second soft magnetic layer
`the first extending portion and the second extending portion
`surrounds around the lead frame , and the processing hole is
`contact with each other . The first polymeric material layer
`formed , there is a slight difference in transmission efficiency
`and the first extending portion are made of same material .
`and there is no difference in a recognition distance .
`A distance between the first extending portion and the
`Also , as illustrated in FIG . 12 , when a diameter of the 20 second extending portion may become closer as the plurality
`of the soft magnetic layers becomes farther .
`processing hole is changed to the range of 1 to 3 mm , the
`length ( 1 ) of the first extending portion or the second
`effect of an increase in transmission efficiency is generated .
`As illustrated in FIG . 13 , when the soft magnetic layer ( the
`extending portion and a thickness ( h ) of the plurality of the
`second soft magnetic layer surrounds around the lead
`soft magnetic layers may have a relation of the following
`frame , transmission efficiency is slight reduced , so there is 25 equation , wherein A represents a constant of 0 . 6 to 10 .
`no large difference in transmission efficiency .
`[ equation ]
`I = Axh .
`As set forth above , according to some embodiments of the
`present application , the wireless charging and communica
`Any one of the first polymeric material layer and the
`tion board may enable both the wireless power conversion
`second polymeric material layer may contain any one mate
`30 rial of polyethylene , polyacrylic , polyimide , polyamide , and
`( WPC ) and near field communication ( NFC ) .
`According to some embodiments of the present applica -
`polyurethane .
`tion , the a portion of the soft magnetic layer exposed to the
`The wireless charging and communication board may
`atmosphere is minimized so that the inflow of a foreign
`further include an adhesive layer intended for adhering the
`substance to the outside can be minimized , and the soft
`first polymeric material layer and the second polymeric
`magnetic layer is disposed to surround the lead frame at a 35 material layer to the plurality of the soft magnetic layers .
`regular interval so that the problems of a reduction in
`An air gap may be further formed between the plurality of
`transmission efficiency upon charging and a reduction in a
`the soft magnetic layers , the first extending portion and the
`recognition distance upon data communication can be over -
`second extending portion .
`The plurality of the soft magnetic layer may include : a
`come even though the lead frame is disposed .
`Furthermore , according to some embodiments of the 40 first soft magnetic layer ; and a second soft magnetic layer
`present application , the soft magnetic layer is added so that
`arranged on the first soft magnetic layer .
`transmission efficiency upon charging can be adjusted or
`The first soft magnetic layer and the second soft magnetic
`improved , and a recognition distance upon data communi -
`layer may be made of different materials .
`The coil pattern may include : a first coil pattern arranged
`cation can be adjusted .
`An aspect of embodiments of the present application 45 in a region on the polymeric material layer corresponding to
`provides a wireless charging and communication board that
`the first soft magnetic layer ; and a second coil pattern
`enables wireless power conversion ( WPC ) and near field
`arranged in a region on the polymeric material layer corre
`sponding to the second soft magneti