( 12 ) United States Patent
`An et al .
`
`( 10 ) Patent No . : US 10 , 270 , 291 B2
`( 45 ) Date of Patent :
`* Apr . 23 , 2019
`
`US010270291B2
`
`( 54 ) WIRELESS POWER RECEIVER AND
`METHOD OF MANUFACTURING THE SAME
`( 71 ) Applicant : LG INNOTEK CO . , LTD . , Seoul ( KR )
`( 72 ) Inventors : Jeong Wook An , Seoul ( KR ) ; Jung Oh
`Lee , Seoul ( KR ) ; Sung Hyun Leem ,
`Seoul ( KR ) ; Yang Hyun Kim , Seoul
`( KR )
`( 73 ) Assignee : LG INNOTEK CO . , LTD . , Seoul ( KR )
`Subject to any disclaimer , the term of this
`( * ) Notice :
`patent is extended or adjusted under 35
`U . S . C . 154 ( b ) by 8 days .
`This patent is subject to a terminal dis
`claimer .
`( 21 ) Appl . No . : 15 / 360 , 425
`( 22 ) Filed :
`Nov . 23 , 2016
`( 65 )
`Prior Publication Data
`US 2017 / 0076859 Al Mar . 16 , 2017
`
`( 63 )
`
`Related U . S . Application Data
`Continuation of application No . 13 / 663 , 012 , filed on
`Oct . 29 , 2012 , now Pat . No . 9 , 806 , 565 .
`Foreign Application Priority Data
`( 30 )
`Mar . 23 , 2012
`( KR ) . . . . . . . . . . . . . . . . . . . . . . . 10 - 2012 - 0029987
`Jul . 19 , 2012
`( KR ) . . . . . . . . . . . . . . . . . . . . . . . . 10 - 2012 - 0079004
`( 51 )
`Int . CI .
`H02J 50 / 10
`HO2J 50 / 70
`
`( 2016 . 01 )
`( 2016 . 01 )
`( Continued )
`
`( 58 )
`
`( 56 )
`
`( 52 ) U . S . CI .
`CPC . . . . . . . . . . . . . HO2J 50 / 10 ( 2016 . 02 ) ; B60L 11 / 182
`( 2013 . 01 ) ; G06K 19 / 0723 ( 2013 . 01 ) ;
`( Continued )
`Field of Classification Search
`None
`See application file for complete search history .
`References Cited
`U . S . PATENT DOCUMENTS
`4 , 947 , 180 A
`8 / 1990 Schotz
`5 , 574 , 470 A
`11 / 1996 de Vall
`( Continued )
`FOREIGN PATENT DOCUMENTS
`1462413 A
`12 / 2003
`1592986 A
`3 / 2005
`( Continued )
`OTHER PUBLICATIONS
`Dainippon Printing ( JP 2008 - 027015 ) Translation F5 ; Feb . 2008 .
`( Continued )
`Primary Examiner — Jared Fureman
`Assistant Examiner — James Evans
`( 74 ) Attorney , Agent , or Firm — Saliwanchik , Lloyd &
`Eisenschenk
`( 57 )
`ABSTRACT
`A wireless power receiver can include a magnetic substrate
`and a coil configured to wirelessly receive power . The coil
`can be formed as a conductive layer on the magnetic
`substrate . A connecting unit can be disposed in a receiving
`space of the magnetic substrate and can be connected to the
`coil unit .
`
`CN
`CN
`
`20 Claims , 21 Drawing Sheets
`
`3
`
`100
`
`710
`
`A
`
`+
`
`310
`
`320
`
`230
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 1
`
`

`

`( 2016 . 01 )
`( 2006 . 01 )
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`HO2J 17700
`HOIF 38 / 14
`H04W 4 / 80
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`Scramoge Technology Ltd.
`Ex. 2021 - Page 2
`
`

`

`US 10 , 270 , 291 B2
`Page 3
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`
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`

`

`atent
`
`Apr . 23 , 2019
`
`Sheet 1 of 21
`
`US 10 , 270 , 291 B2
`
`1000
`
`CEO
`
`330 310 320
`300
`
`210 220
`230
`FIG . 1
`
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`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 2 of 21
`
`US 10 , 270 , 291 B2
`
`WWWWWWWWWWWWWWWWWW
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`FIG . 2
`
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`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 3 of 21
`
`US 10 , 270 , 291 B2
`
`230
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`FIG . 3
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`FIG . 4
`
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`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 4 of 21
`
`US 10 , 270 , 291 B2
`
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`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 5 of 21
`
`US 10 , 270 , 291 B2
`
`320
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`FIG . 9
`
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`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 6 of 21
`
`US 10 , 270 , 291 B2
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`
`630 610 620
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`FIG . 10
`
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`

`atent
`
`Apr . 23 , 2019
`
`Sheet 7 of 21
`
`US 10 , 270 , 291 B2
`
`300
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`
`130
`
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`FIG . 11
`
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`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 8 of 21
`
`US 10 , 270 , 291 B2
`
`.
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`300
`FIG . 12
`
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`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 9 of 21
`
`US 10 , 270 , 291 B2
`
`1000
`
`220
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`230
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`FIG . 13
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`210
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`FIG . 14
`
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`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 10 of 21
`
`US 10 , 270 , 291 B2
`
`1000
`
`momen
`
`-
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`
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`FIG . 15
`
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`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 11 of 21
`
`US 10 , 270 , 291 B2
`
`33
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`FIG . 17
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 14
`
`

`

`atent
`
`Apr . 23 , 2019
`
`Sheet 12 of 21
`
`US 10 , 270 , 291 B2
`
`?????????
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`FIG . 20
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 15
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 13 of 21
`
`US 10 , 270 , 291 B2
`
`1000
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`FIG . 21
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 16
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 14 of 21
`
`US 10 , 270 , 291 B2
`
`MYVVVVVVVVVVVV
`www
`
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`Frea [ kHz ) Setupt : Sweep Setup 1 : Sweep Setup 1 ; Sweep
`130 . 000000
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`FIG . 22
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`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 17
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 15 of 21
`
`US 10 , 270 , 291 B2
`
`. . . . . . . . . . . . . . . .
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`1
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`Resistance
`Inductance
`Setupt : Sweep Setup 1 : Sweep Setup 1 : Sweep
`10375 . 469101 10 . 760491
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`10360 . 785303
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`10358 . 975165
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`FIG . 23
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`Scramoge Technology Ltd.
`Ex. 2021 - Page 18
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 16 of 21
`
`US 10 , 270 , 291 B2
`
`200
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`NDA
`
`WARNARRARARAS
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`FIG . 25
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 19
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 17 of 21
`
`US 10 , 270 , 291 B2
`
`200
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`600
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`710
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`su
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`230
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`620
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`300
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`FIG . 26
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 20
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 18 of 21
`
`US 10 , 270 , 291 B2
`
`1000
`
`200
`
`GI
`
`WOLLT
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`710
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`350
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`310
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`FIG . 27
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`10 - 800 - 720
`Bdo 600 710 230 30 220 230 30 210 30 . 620 30 610
`FIG . 28
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 21
`
`

`

`atent
`
`Apr . 23 , 2019
`
`Sheet 19 of 21
`
`US 10 , 270 , 291 B2
`
`4
`
`TITZ1 - 201
`T
`- 700
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`+
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`the
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`FIG . 29
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`- 700
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`FIG . 30
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`FIG . 31
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`700
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`makinikiami
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`kinnitamatamatiemmikina
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`kind
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`FIG . 32
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`FIG . 33
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`
`210 , 620
`+ 600
`
`YX
`
`910
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`V - 700
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`+
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 22
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 20 of 21
`
`US 10 , 270 , 291 B2
`
`60060230 220 20210620 610
`Eara In a
`ta
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`a . 800
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`FIG . 34
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`FIG . 36
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`FIG . 35
`310 350
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 23
`
`

`

`U . S . Patent
`
`Apr . 23 , 2019
`
`Sheet 21 of 21
`
`US 10 , 270 , 291 B2
`
`pe
`
`i
`
`tememememememimpinaning
`
`320
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`310
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`350
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`340
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`
`in
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`t
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`
`LILLE
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`230 30 210 30 60 30 60
`FIG . 37
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 24
`
`

`

`US 10 , 270 , 291 B2
`
`CROSS - REFERENCE TO RELATED
`APPLICATIONS
`
`45
`
`WIRELESS POWER RECEIVER AND
`METHOD OF MANUFACTURING THE SAME
`
`An embodiment provides a method capable of simplifying
`the manufacturing process for a wireless power receiver by
`disposing a coil unit inside a magnetic substrate .
`A wireless power receiver according to one embodiment
`5 includes a magnetic substrate and a coil configured to
`wirelessly receive power , wherein the coil is formed as a
`conductive layer on the magnetic substrate .
`This application is a continuation of U . S . application Ser .
`A wireless power receiver according to one embodiment
`No . 13 / 663 , 012 , filed Oct . 29 , 2012 , which claims the
`includes a magnetic substrate and a coil a coil configured to
`benefit under 35 U . S . C § 119 of Korean Patent Application
`Nos . 10 - 2012 - 0029987 , filed Mar . 23 , 2012 , and 10 - 2012 - 10 wirele
`wirelessly receive power , wherein the coil is formed as a
`0079004 , filed Jul . 19 , 2012 , which are hereby incorporated
`conductive layer at the magnetic substrate , wherein a part of
`by reference in their entirety .
`the coil is disposed inside the magnetic substrate .
`A method of manufacturing a wireless power receiver for
`BACKGROUND
`wirelessly receiving power according to one embodiment
`includes forming a conductor on a protective film , forming
`The embodiment relates to a wireless power receiver and
`a conductive pattern by etching the conductor , connecting a
`a method of manufacturing the same . In more particular , the
`connecting unit to be connected to an external circuit to a
`embodiment relates to a wireless power receiver used for
`connection terminal of the conductive pattern , obtaining a
`wireless power transmission or an antenna to reduce a
`thickness of the wireless power receiver and to simplify the 20 magnetic substrate having a receiving space of a predeter
`manufacturing process thereof and a method of manufac -
`mined shape corresponding to the connecting unit and
`disposing the magnetic substrate on the conductive pattern
`turing the same .
`Samme .
`Awireless power transmission or a wireless energy trans -
`while positioning the connecting unit in the receiving space .
`fer refers to a technology of wirelessly transferring electric
`According to one embodiment , the thickness of the wire
`energy to desired devices . In the 1800 ' s , an electric motor or 25 less power receiver can be remarkably reduced by directly
`a transformer employing the principle of electromagnetic
`disposing the coil unit on a top surface of the magnetic
`induction has been extensively used and then a method of
`substrate . According to one embodiment , the high power
`transmitting electrical energy by irradiating electromagnetic
`transmission efficiency can be ensured and communication
`waves , such as radio waves or lasers , has been suggested
`with external devices can be enabled by directly disposing
`Actually , electrical toothbrushes or electrical razors , which 30 the coil unit and the near field communication antenna on the
`are frequently used in daily life , are charged based on the
`top surface of the magnetic substrate .
`principle of electromagnetic induction . The electromagnetic
`According to one embodiment , the manufacturing process
`induction refers to the generation of an electric current
`for the wireless power receiver can be simplified by directly
`through induction of a voltage when a magnetic field is 5 disposing the coil unit on the magnetic substrate only
`changed around a conductor . The electromagnetic induction 35
`through laminating and etching processes .
`scheme has been successfully commercialized for electronic
`According to one embodiment , the thickness of the wire
`appliances having small sizes , but represents a problem in
`less power receiver can be remarkably reduced by forming
`that the transmission distance of power is too short .
`the conductive pattern inside the magnetic substrate .
`Besides the electromagnetic induction scheme , the long
`distance transmission using the resonance and the short - 40
`According to one embodiment , the high power transmis
`wavelength radio frequency has been suggested as the
`sion efficiency can be ensured by forming the conductive
`pattern inside the magnetic substrate and the communication
`wireless energy transfer scheme .
`However , in general , a wireless power receiver disposed
`with external devices can be enabled by using the near field
`a terminal has a thick thickness and the manufacturing
`communication antenna .
`in
`According to one embodiment , the connecting unit is
`process thereof is complicated .
`disposed in the receiving space of the magnetic substrate so
`BRIEF SUMMARY
`that the thickness of the wireless power receiver can be
`remarkably reduced as much as the thickness of the con
`An embodiment provides a method capable of remarkably
`necting unit .
`reducing a thickness of a wireless power receiver by directly 50
`According to one embodiment , a tape substrate is used as
`disposing a coil unit on a top surface of a magnetic substrate
`the connecting unit so that the overall size of the wireless
`An embodiment provides a method capable of ensuring
`power receiver can be reduced .
`high power transmission efficiency and enabling communi -
`According to one embodiment , a lead frame is used as the
`cation with external devices by directly disposing a coil unit
`connecting unit , so the wiring layer included in the connect
`and a near field communication antenna on a top surface of 55 ing unit can be protected from the heat , external moisture or
`a magnetic substrate .
`impact and the mass production can be realized .
`An embodiment provides a method capable of simplifying
`According to one embodiment , the magnetic field directed
`the manufacturing process for a wireless power receiver by
`to the outside can be changed into the coil unit due to the
`directly disposing a coil unit on a magnetic substrate .
`conductive pattern formed in the magnetic substrate , so the
`An embodiment provides a method capable of remarkably 60 power transmission efficiency can be improved , at the same
`reducing a thickness of a wireless power receiver by dis -
`time , the amount of the magnetic field leaked to the outside
`posing a coil unit inside a magnetic substrate .
`can be reduced so that the bad influence of the magnetic field
`An embodiment provides a method capable of ensuring
`exerted to the human body can be diminished .
`high power transmission efficiency and enabling communi -
`According to one embodiment , the wireless power
`cation with external devices by disposing a coil unit inside 65 receiver can be manufactured only through the processes of
`a magnetic substrate and a near field communication antenna
`forming the pattern groove and inserting the coil unit , so that
`the manufacturing process can be simplified .
`on a magnetic substrate .
`
`Scramoge Technology Ltd.
`Ex. 2021 - Page 25
`
`

`

`US 10 , 270 , 291 B2
`
`DETAILED DESCRIPTION
`Other various effects of the embodiments will be dis
`closed directly or indirectly in the detailed description of the
`Hereinafter , exemplary embodiments will be described in
`embodiments .
`detail with reference to accompanying drawings so that
`5 those skilled in the art can easily work with the embodi
`BRIEF DESCRIPTION OF THE DRAWINGS
`ments .
`H
`ereinafter , " conductive pattern ” refers to the shape of a
`FIG . 1 is a perspective view illustrating a wireless power
`conductive layer and may be used to refer to a structure
`receiver 1000 according to the first embodiment ;
`formed by a patterning process . " conductive layer ” may be
`FIG . 2 is a plan view illustrating a wireless power receiver
`10 used interchangeably with “ conductive pattern ” and refers to
`1000 according to the first embodiment ;
`a structure formed by methods including patterning , etching ,
`FIG . 3 is a sectional view taken along line A - A ' of a
`deposing , selective plating , and the like .
`connecting unit 300 of a wireless power receiver 1000
`FIG . 1 is a perspective view illustrating a wireless power
`shown in FIG . 2 ;
`receiver 1000 according to the first embodiment , FIG . 2