CERTIFICATE OF TRANSLATION ACCURACY
`
`I, Michael Fletcher, declare:
`
`1. I am a native speaker of English and am well versed in both the Japanese and English
`languages and have over 18 years of experience translating Japanese technical documents into
`English on a full-time basis.
`
`2. The following translation of the corresponding source text from Japanese into English is
`accurate and complete to the best of my knowledge.
`
`I declare under penalty of perjury under the laws of the United States of America that the
`foregoing is true and accurate.
`
`Statements made herein are to the best of my knowledge true and are based on information that I
`believe to be true and further these statements were made with the knowledge that willful false
`statements and the like so made are punishable by fine or imprisonment, or both, under Section
`1001 of Title 18 of the United States Code and that such willful false statements may jeopardize
`the validity of the patent application in the United States of America or any patent issuing
`thereon.
`
`Executed this 19th day of September 2021, at Parowan, UT.
`
`Michael Fletcher
`
`
`
`
`
`
`Petitioner Samsung and Google
`Ex-1011, 0001
`
`

`

`(19) Japanese Patent
`Office (JP)
`
`(51)Int. Cl
`H 02 J
`H 04 M
`H 02 J
`G 06 K
`H 01 M
`
`
`7/00
`1/02
`17/00
`17/00
`10/46
`
`JPO File Number
`
`
`(11) Published Patent Application No.
`(12) Publication of Patent
`Application (A)
`2014-11853
`
`(43) Application Publication Date: January 20, 2014
`FI
`
`Theme code (ref.)
`H 02 J
`7/00
`5B058
`H 04 M
`1/02
`5G503
`H 02 J
`17/00
`5H030
`G 06 K
`17/00
`5K023
`H 01 M
`10/46
`
`Number of Claims: 3 OL Total pages: 28
`000005821
`Panasonic Corporation
`1006 Oaza Kadoma, Kadoma-shi Osaka-fu, Japan
`100119552
`Patent Attorney HASHIMOTO, Koushu
`100105647
`Patent Attorney OGURI, Shohei
`100138771
`Patent Attorney SHOMEI, Yoshida
`100108589
`Patent Attorney ICHIKAWA, Toshimitsu
`KOYANAGI, Yoshio
`Panasonic Mobile Communications Co., Ltd., 600
`Saedo-cho, Tsuzuki-ku, Yokohama-shi, Kanagawa-
`ken, Japan
`
`(21) Application No.: 2012-
`145962 (P2012-145962)
`
`(22) Application Date: June 28,
`2012 (2012.6.28)
`
`ID Number
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`(2006.01)
`Request for Examination: No
`(71) Applicant
`
`
`
`
`
`
`
`(74) Agent
`
`
`
`
`(74) Agent
`
`
`
`
`(74) Agent
`
`
`
`
`(74) Agent
`
`
`
`
`(72) Inventor
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Continued on last page
`
`(54) TITLE OF THE INVENTION:
`
`MOBILE TERMINAL
`
`(57) ABSTRACT
`
`PROBLEM
`An object of the present invention is to provide a mobile terminal enabling implementation of reduced
`thickness by modularizing and reducing size of the non-contact charging coil, NFC antenna, and magnetic
`sheet.
`
`MEANS TO SOLVE THE PROBLEM
`The mobile terminal 10 is provided with a case 11, a battery pack 18, and a non-contact charging module 72.
`The battery pack 18 is arranged in a first region 31 in plan view viewed along the thickness direction of the
`
`Petitioner Samsung and Google
`Ex-1011, 0002
`
`

`

`case, and the non-contact charging module 72 is arranged in a second region 32 adjacent to the first region
`31.
`The non-contact charging module 72 overlaps the intersection of the centerline of the second region 32 along
`the adjacent direction of the first region 31 and the second region 32 and the centerline of the case 11 in the
`width direction that is perpendicular to the adjacent direction of the second region 32.
`
`
`Petitioner Samsung and Google
`Ex-1011, 0003
`
`

`

`[Selected drawing] FIG. 6
`
`No magnet
`
`Magnet present
`
`Coil inner diameter (mm)
`
`
`
`Petitioner Samsung and Google
`Ex-1011, 0004
`
`

`

`
`What is claimed is:
`[Claim 1]
`A mobile terminal comprising:
` a case;
` a battery pack stowed in the case; and
` a non-contact charging module stowed in the case;
` the non-contact charging module having a charging coil with a conducting wire wound, a first magnetic sheet
`that supports said charging coil, and a second magnetic sheet that is placed on the first magnetic sheet and
`supports the NFC coil; wherein
` the battery pack is placed in a first region in plan view as viewed in the through-thickness direction of the
`case;
` the non-contact charging module is placed in a second region adjacent to the first region; and
` the non-contact charging module overlaps the intersection of the centerline of the second region along the
`adjacent direction of the first region and second region and the centerline of the case in the width direction
`perpendicular to the adjacent direction of the second region.
`
`[Claim 2]
`A mobile terminal comprising:
` a case;
` a battery pack stowed in the case; and
` a non-contact charging module stowed in the case;
` the non-contact charging module having a charging coil with a conducting wire wound, a first magnetic sheet
`that supports said charging coil, and a second magnetic sheet that is placed on the first magnetic sheet and
`supports the NFC coil; wherein
` the battery pack is placed in a first region in plan view as viewed in the through-thickness direction of the
`case;
` the non-contact charging module is placed in a second region adjacent to the first region; and
` the non-contact charging module overlaps the intersection of the centerline of the second region along the
`adjacent direction of the first region and second region and the centerline of the battery pack in the width
`direction perpendicular to the adjacent direction of the second region.
`
`[Claim 3]
`A mobile terminal comprising:
` a case;
` a battery pack stowed in the case; and
` a non-contact charging module stowed in the case;
` the non-contact charging module having a charging coil with a conducting wire wound, a first magnetic sheet
`that supports said charging coil, and a second magnetic sheet that is placed on the first magnetic sheet and
`supports the NFC coil; wherein
` the battery pack is placed in a first region in plan view as viewed in the through-thickness direction of the
`case;
` the non-contact charging module is placed in a second region adjacent to the first region; and
` the non-contact charging module is placed more towards the first region side than the centerline of the
`second region along the adjacent direction of the first region and the second region.
`
`DETAILED DESCRIPTION OF THE INVENTION
`TECHNICAL FIELD
`[0001]
`
`Petitioner Samsung and Google
`Ex-1011, 0005
`
`

`

`The present invention relates to a mobile terminal provided with a non-contact charging module equipped
`with a non-contact charging module and an NFC antenna.
`
`BACKGROUND TECHNOLOGY
`[0002]
`Recently there are Near Field Communication (NFC) antennas that use the 13.56 MHz radio wave band
`utilizing Radio Frequency Identification (RFID) technology equipped on communication devices such as
`mobile terminal equipment. In order to improve communication efficiency, the NFC antenna is provided with
`a magnetic sheet that improves the efficiency of communication in the 13.56 MHz band, making it an NFC
`antenna module. An additional proposal is to mount a non-contact charging module on a communication
`device and that the communication device be charged using a non-contact charging method. With this
`system, a power transmission coil is placed on the charging device side and a power receiving coil on the
`communication device side, and electromagnetic induction occurs between the two coils in the 100 kHz to
`200 kHz band that transmits power from the charging device to the communication device side. The non-
`contact charging module is provided with a magnetic sheet that improves the efficiency of communication in
`approximately the 100 kHz to 200 kHz band in order to improve the communication efficiency thereof and
`thus is a non-contact charging module.
`
`[0003]
`Furthermore, a mobile terminal provided with a NFC module and a non-contact charging module has been
`proposed (for example, Patent Document 1).
`
`PRIOR ART DOCUMENTS
`[Patent Documents]
`[0004]
`Patent Document 1: Japanese Patent Publication 4669560
`
`SUMMARY OF THE INVENTION
`PROBLEM TO BE RESOLVED BY THE INVENTION
`[0005]
`NFC is short range wireless communication that uses electromagnetic induction to communicate in the 13.56
`MHz frequency band. In addition, non-contact charging uses electromagnetic induction to transmit power
`using frequencies in approximately the 100 kHz to 200 kHz band. Therefore, the optimal magnetic sheet for
`increasing communication (power transmission) efficiency in respective frequency bands differs between NFC
`modules and non-contact charging modules. On the other hand, since both the NFC module and the non-
`contact charging module communicate (power transmission) by electromagnetic induction, they tend to
`mutually interfere. In other words, there is a possibility that while a first module is communicating, a second
`module may rob magnetic flux. There is also the possibility that an eddy current may occur in a second coil,
`weakening electromagnetic induction of the first module.
`
`[0006]
`Therefore, in Patent Document 1, the NFC module and the non-contact charging module are respectively
`provided with a magnetic sheet that is respectively arranged as a module and this hinders the miniaturization
`of the communication device. In addition, to avoid mutually interfering with communication, the
`communication direction is set different. This is very inconvenient because the communication plane changes
`depending on the type of communication. Furthermore, in recent years, there are smartphones that use
`most of one side of the case as a display area, and when applied to smartphones, one communication must
`be performed on the display side.
`
`[0007]
`
`Petitioner Samsung and Google
`Ex-1011, 0006
`
`

`

`In addition, when a mobile terminal is provided with a non-contact charging module, the mobile terminal
`cannot be readily made thinner, and there is still room for improvement from that perspective.
`
`[0008]
`In light of the problem described above, an object of the present invention is to provide a mobile terminal
`which can achieve miniaturization by combining a non-contact charging coil, an NFC antenna, and a magnetic
`sheet into a single module, and which is provided with a non-contact charging module capable of
`communicating and transmitting power in the same direction, and which can be made thinner. An additional
`object is to improve both power transmission efficiency of non-contact charging and the communication
`efficiency of NFC communication by overlaying two types of magnetic sheets.
`
`MEANS FOR SOLVING THE PROBLEM
`[0009]
`The mobile terminal of the present invention includes:
` a case;
` a battery pack stowed in the case; and
` a non-contact charging module stowed in the case;
` the non-contact charging module having a charging coil with a conducting wire wound, a first magnetic sheet
`that supports said charging coil, and a second magnetic sheet that is placed on the first magnetic sheet and
`supports the NFC coil; wherein
` the battery pack is placed in a first region in plan view as viewed in the through-thickness direction of the
`case;
` the non-contact charging module is placed in a second region adjacent to the first region; and
` the non-contact charging module overlaps the intersection of the centerline of the second region along the
`adjacent direction of the first region and second region and the centerline of the case in the width direction
`perpendicular to the adjacent direction of the second region.
`
`[0010]
`The battery pack was placed in the first region of the case and a non-contact charging module was placed in
`the second region.
`This enables the battery pack and the non-contact charging module to be placed adjacent to each other,
`thereby facilitating the connection of the battery pack and the non-contact charging module.
`Furthermore, the non-contact charging module is arranged by overlapping the non-contact charging module
`at the intersection of the centerline of the second region along the adjacent direction of the first region and
`the second region and the centerline of the case in the width direction.
`Thereby, the weight balance of the non-contact charging module is not biased to one side in the width
`direction of the case, such that an operator does not have a sense of discomfort.
`
`[0011]
`The mobile terminal of the present invention includes:
` a case;
` a battery pack stowed in the case; and
` a non-contact charging module stowed in the case;
` the non-contact charging module having a charging coil with a conducting wire wound, a first magnetic sheet
`that supports said charging coil, and a second magnetic sheet that is placed on the first magnetic sheet and
`supports the NFC coil; wherein
` the battery pack is placed in a first region in plan view as viewed in the through-thickness direction of the
`case;
` the non-contact charging module is placed in a second region adjacent to the first region; and
` the non-contact charging module overlaps the intersection of the centerline of the second region along the
`
`Petitioner Samsung and Google
`Ex-1011, 0007
`
`

`

`adjacent direction of the first region and second region and the centerline of the battery pack in the width
`direction perpendicular to the adjacent direction of the second region.
`
`[0012]
`The battery pack was placed in the first region of the case and a non-contact charging module was placed in
`the second region.
`This enables the battery pack and the non-contact charging module to be placed adjacent to each other,
`thereby facilitating the connection of the battery pack and the non-contact charging module.
`Furthermore, the non-contact charging module is arranged by overlapping the non-contact charging module
`at the intersection of the centerline of the second region along the adjacent direction of the first region and
`the second region and the centerline of the battery pack in the width direction.
`Thereby, the weight balance of the non-contact charging module is not biased to one side in the width
`direction of the battery pack, such that an operator does not have a sense of discomfort.
`
`[0013]
`The mobile terminal of the present invention includes:
` a case;
` a battery pack stowed in the case; and
` a non-contact charging module stowed in the case;
` the non-contact charging module having a charging coil with a conducting wire wound, a first magnetic sheet
`that supports said charging coil, and a second magnetic sheet that is placed on the first magnetic sheet and
`supports the NFC coil; wherein
` the battery pack is placed in a first region in plan view as viewed in the through-thickness direction of the
`case;
` the non-contact charging module is placed in a second region adjacent to the first region; and
` the non-contact charging module is placed more towards the first region side than the centerline of the
`second region along the adjacent direction of the first region and the second region.
`
`[0014]
`The battery pack was placed in the first region of the case and a non-contact charging module was placed in
`the second region.
`This enables the battery pack and the non-contact charging module to be placed adjacent to each other,
`thereby facilitating the connection of the battery pack and the non-contact charging module.
`
`Furthermore, the non-contact charging module is arranged more towards the first region side than the
`centerline of the second region along the adjacent direction of the first region and second region.
`Thereby, the weight balance of the non-contact charging module is not biased to the side further than the
`first region relative to the center of the second region, so that the operator does not feel any discomfort.
`
`EFFECT OF THE INVENTION
`[0015]
`With the present invention, a mobile terminal that achieves miniaturization as a single modularization of a
`non-contact charging coil, an NFC antenna, and a magnetic sheet, and has a non-contact charging module
`capable of communication and power transmission in the same direction, and is thin can be provided.
`Additionally, improving both power transmission efficiency of non-contact charging and the communication
`efficiency of NFC communication by overlaying two types of magnetic sheets is feasible.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`[0016]
`
`Petitioner Samsung and Google
`Ex-1011, 0008
`
`

`

`FIG. 1 is an exploded perspective view of a mobile terminal of embodiment 1 according to the present
`invention.
`FIG. 2(A) is a plan view illustrating the mobile terminal of embodiment 1. FIG. 2(B) is a side view of the mobile
`terminal of embodiment 1.
`FIG. 3 is a cross-sectional view illustrating the circuit board and non-contact charging module of embodiment
`1.
`FIG. 4 (A) to (E) illustrate exploded views of the non-contact charging module of embodiment 1.
`FIG. 5(A) through 5(D) illustrate the relationship between a primary side non-contact charging module
`equipped with a magnet and a charging coil.
`FIG. 6 illustrates the relationship between the size of the inner diameter of the charging coil and the L-value
`of the charging coil when the outer diameter of the charging coil is kept constant in the cases where the
`primary side non-contact charging module is equipped with a magnet or not.
`FIG. 7 illustrates the relationship between the L-value of the charging coil and the percentage of central
`portion that is hollowed out for the cases of whether or not the primary side non-contact charging module is
`equipped with a magnet.
`FIG. 8 (A) to (D) illustrate diagrams of the non-contact charging module of embodiment 1.
`FIG. 9 is a schematic diagram illustrating the first magnetic sheet provided with L-shaped slits.
`FIG. 10(A) to 10(C) illustrate the frequency characteristics of the first magnetic sheet and the second
`magnetic sheet.
`FIG. 11(A) to 11(C) are explanatory plan views of a charging device for charging a non-contact charging
`module of embodiment 1.
`FIG. 12 is a perspective view illustrating an example of charging using a non-contact charging module of
`embodiment 1.
`FIG. 13 is a plan view of a mobile terminal of embodiment 2 of the present invention.
`FIG. 14 is a plan view of a mobile terminal of embodiment 3 according to the present invention.
`
`DESCRIPTION OF THE PREFERRED EMBODIMENTS
`[0017]
`A mobile terminal in accordance with an embodiment of the present invention will be described below with
`reference to the drawings.
`
`[0018]
`Embodiment 1
`As illustrated in FIG. 1, a mobile terminal 10 is provided with a case 11, a communication hole 12 for
`communicating between the inside and outside of the case 11, a camera part 16 mounted on a circuit board
`14, a battery pack 18 stowed in the case 11, and a non-contact charging module 20 stowed in the case 11.
`Furthermore, the mobile terminal 10 is provided with a heat dissipation sheet 22 (see FIG. 2(B)) attached to
`the non-contact charging module 20, a displaying part 24 provided on the opening 11A side of the case 11,
`and a protective cover 26 covering the displaying part 24.
`
`[0019]
`As shown in FIG. 2(A) and 2(B), the case 11 is formed in a nearly rectangular shape as viewed in plan view in
`the thickness direction of the case 11 and has a first region 31 located on the side opposite the
`communication hole 12 in plan view, and a second region 32 adjacent to the first region 31.
`The battery pack 18 is arranged in the first region 31, and the non-contact charging module 20 and the
`camera part 16 are arranged in the second region 32.
`
`[0020]
`
`Petitioner Samsung and Google
`Ex-1011, 0009
`
`

`

`As shown in FIG. 3, the circuit board 14 is provided with a base material 34 arranged in the second region of
`the case 11 and a plurality of electronic components 35 mounted on a surface 34A of the base material 34 on
`the non-contact charging module 20 side.
`The circuit board 14 is provided with a shield case 36 that is provided on the surface 34A of the non-contact
`charging module 20 side and covers the plurality of electronic components 35.
`
`[0021]
`The camera part 16 is provided on the surface 34A of the base material 34 on the non-contact charging
`module 20 side and has a camera module capable of capturing images through the communication hole 12.
`As shown in FIG. 2(A) and 2(B), the battery pack 18 is formed in a nearly rectangular shape and is arranged in
`the first region 31 viewed along the thickness direction of the case 11 in the plan view.
`
`[0022]
`As illustrated in FIG. 4(A), the non-contact charging module 20 is arranged in the second region 32 of the case
`11 (see FIG. 2(A)) and is provided with a charging coil 41 on which a conductor 42 is wound and an NFC coil
`43 arranged enclosing the charging coil 41.
`The non-contact charging module 20 has a first magnetic sheet 44 that supports the charging coil 41 and a
`second magnetic sheet 45 that is placed on the first magnetic sheet 44 and supports the NFC coil 43.
`
`[0023]
`The adhesion between the upper surface of the first magnetic sheet 44 and the lower surface of the second
`magnetic sheet 45, the adhesion between the upper surface of the first magnetic sheet 44 and the lower
`surface of the charging coil 41, and the adhesion between the upper surface of the second magnetic sheet 45
`and the lower surface of the NFC coil 43 are achieved by insulating double-sided tape or adhesive. The entire
`charging coil 41 should be placed with no protruding from the first magnetic sheet 44, and the entire NFC coil
`43 should be placed with no protruding from the second magnetic sheet 45. The second magnetic sheet 45
`should be placed with no protruding from the first magnetic sheet 44. By doing so, the communication
`efficiency of both the charging coil 41 and the NFC coil 43 can be improved. A slit 48 is formed in the first
`magnetic sheet 44, and the shape thereof may be as illustrated in FIG. 4(A) (form in FIG. 9 below) or as
`illustrated in FIG. 4(D). In FIG. 4(A), the slit 48 does not extend to the central portion 44B, but may extend to
`the central portion 44B. Thereby, the entirety of leg portions 432a and 432b can be securely stowed in the
`slit 48.
`
`[0024]
`The charging coil 41, the NFC coil 43, the first magnetic sheet 44, and the second magnetic sheet 45 will be
`described in detail below.
`Charging Coil
`FIG. 4(B) will be used to describe the charging coil 41 in detail.
`
`[0025]
`In the present embodiment, the charging coil 41 is wound in an approximate square, but may be any shape,
`including an approximate rectangle, circle, oval, polygon, or the like.
`
`[0026]
`The charging coil 41 has two leg portions (terminals) 432a and 432b as the starting and ending points, and is
`wound with a litz wire or plurality of wires of about 8 to 15 conducting wires that are roughly 0.1 mm in wire
`diameter (preferably roughly 2 to 15 conducting wires that are 0.08 to 0.3 mm) in a swirl pattern on a surface
`around a hollow part. For example, a coil wound with Litz wire made up of 12 conducting wires with a wire
`diameter of 0.1 mm has a much lower AC resistance than a coil wound with a single conducting wire with the
`same cross-sectional area due to the skin effect. If the AC resistance during operation of the coil is lowered,
`
`Petitioner Samsung and Google
`Ex-1011, 0010
`
`

`

`the heat generated by the coil is lowered, and the charging coil 41 is able to achieve favorable thermal
`characteristics. The litz wire, which consists of 8 to 15 conducting wires of 0.08 mm to 1.5 mm, can provide
`favorable power transmission efficiency. If a single conductor is used, the conducting wire should have a wire
`diameter of 0.2 mm to 1 mm. Also, for example.
`Three 0.2 mm conducting wires and two 0.3 mm conducting wires may be used to form a single conductor
`like a Litz wire. The leg portions (terminals) 432a and 432b as current supply parts supply current from a
`commercial power source that is an external power source, to the charging coil 41. The amount of current
`flowing through the charging coil 41 is about 0.4 A to 2 A. In this embodiment, the current is 0.7 A.
`
`[0027]
`The charging coil 41 in this embodiment has a distance (length of one side) of 20 mm (preferably 15 mm to
`25 mm) between opposing sides of a hollow part of an approximate square, and a distance (length of one
`side) of 35 mm (preferably 25 mm to 45 mm) between opposing sides at an outer edge of the approximate
`square. The charging coil 41 is wound in a donut shape. In the case where the charging coil 41 is wound in an
`approximate rectangular shape, the distance between opposing short sides (length of one side) in the hollow
`part of the rectangular shape is 15 mm (preferably 10 mm to 20 mm), the distance between long sides
`(length of one side) is 23 mm (preferably 15 mm to 30 mm), the distance between opposing short sides
`(length of one side) at the outer edge of the approximate square is 28 mm (preferably 15 mm to 35 mm), and
`the distance between the long sides (length of one side) is 36 mm (preferably 20 mm to 45 mm). When the
`charging coil 41 is wound in a circular shape, the diameter of the hollow part is 20 mm (preferably 10 mm to
`25 mm) and the diameter of the outer edge of the circle is 35 mm (preferably 25 mm to 45 mm).
`
`[0028]
`The charging coil 41 may use a magnet to align with a coil of a non-contact charging module in a charging
`device that is a power transmission partner and supplies power to the charging coil 41. This is because the
`standard (WPC) specifies that the magnet should be a circular (coin-shaped) neodymium magnet, with a
`diameter of about 15.5 mm (about 10 mm to 20 mm) and a thickness of about 1.5 to 2 mm, or the like. The
`strength should be approximately 75 mT to 150 mT. The distance between the coil of the primary side non-
`contact charging module and the charging coil 41 is about 2 to 5 mm, so a magnet of this strength is sufficient
`for positioning. The magnet is arranged within the hollow part of the primary or secondary non-contact
`charging module coil. The magnet may be arranged within the hollow part of the charging coil 41 in this
`embodiment.
`
`[0029]
`In other words, the following methods are examples of what is used for positioning. A method of physically
`(shape) forcing alignment, for example, by forming a convex part on the charging surface of a charging device
`and a concave part on a secondary side electronic device and fitting them together. By mounting a magnet
`on at least one of the primary and secondary sides, the method of alignment is by attracting each other's
`magnets or the magnet of one and the magnetic sheet of the other. As illustrated in FIG. 11(A), a method of
`enabling a mobile terminal 10 (secondary side) to be charged anywhere on the surface of the charging device
`50 by providing a large number of coils 53 over a broad area of the non-contact charging module 52 of the
`charging device 50 (primary side). As illustrated in FIG. 11(B), a method of moving the coil 53 of the non-
`contact charging module 52 of the charging device 50 (primary side) to the position of the charging coil 41 of
`the mobile terminal 10 (secondary side) by providing a function for moving the coil 53 in the X-axis direction
`and Y-axis direction. Furthermore, as shown in FIG. 11(C), there are methods such as making the coil 53 of
`the non-contact charging module 52 of the charging device 50 (primary side) relatively large, thereby more
`readily matching the charging coil 41 of the mobile terminal 10 (secondary side) to the coil 53.
`
`[0030]
`
`Petitioner Samsung and Google
`Ex-1011, 0011
`
`

`

`As described above, there are various methods for aligning the coils of a typical primary side (charging side)
`non-contact charging module and secondary side (charged side) non-contact charging module and these can
`be divided into two types: methods that use magnets and methods that do not use magnets. The non-contact
`charging module 20 can be adapted to both a primary side (charging side) non-contact charging module that
`uses a magnet and a primary side non-contact charging module that does not use a magnet, thereby enabling
`charging regardless of the type of primary side non-contact charging module and improving convenience.
`
`[0031]
`Here, the effect of the magnet on the power transmission efficiency of the non-contact charging module 20 is
`described.
`
`[0032]
`When the magnetic flux for electromagnetic induction is generated between the primary side non-contact
`charging module and the non-contact charging module 20 for power transmission, if there are magnets
`between or around them, the magnetic flux extends to avoid the magnets. Alternatively, the magnetic flux
`that penetrates the magnet becomes eddy currents and heat generation in the magnet, resulting in losses.
`Furthermore, when the magnet is arranged near the first magnetic sheet 44, the first magnetic sheet 44 near
`the magnet becomes saturated and the magnetic permeability is reduced. Accordingly, the magnet provided
`in the primary side non-contact charging module reduces the L-value of the charging coil 41. As a result, the
`transmission efficiency between non-contact charging modules is reduced. To prevent this, in this
`embodiment, the hollow part of the charging coil 41 is made larger than the magnet. In other words, the area
`of the hollow part is set larger than the circular surface of the coin magnet such that the inner edge (portion
`surrounding the hollow part) of the charging coil 41 is outside the outer edge of the magnet. Since the
`diameter of the magnet is less than 15.5 mm, the hollow part should be larger than a circle with a diameter
`of 15.5 mm. Another method is to wind the charging coil 41 in an approximate rectangular shape, and the
`diagonal of the hollow part of the approximate rectangle should be longer than the diameter of the magnet
`(maximum 15.5 mm). Thereby, the influence of the magnet can be suppressed because, of the charging coils
`41 wound in an approximate rectangle, the coils at the corner portions (four corners) where the magnetic
`flux concentrates are located outside the magnet. The following shows the effects of the above
`configuration.
`
`[0033]
`FIGS. 5(A) through 5(D) show the relationship between a primary side non-contact charging module equipped
`with a magnet and a charging coil. FIG. 5(A) illustrates the case where the alignment magnet is used when
`the inner width of the charging coil is small. FIG. 5(B) illustrates the case where the alignment magnet is used
`when the inner width of the charging coil is large. FIG. 5(C) illustrates the case where the alignment magnet is
`not used when the inner width of the charging coil is small. FIG. 5(D) illustrates the case where the alignment
`magnet is not used when the inner width of the charging coil is large.
`
`[0034]
`The primary side non-contact charging module 200 arranged on the charging device is equipped with a
`primary side coil 210, a magnet 220, and a magnetic sheet (not shown). In FIGS. 5(A) to 5(D), the first
`magnetic sheet 44, the second magnetic sheet 45, and the charging coil 41 in the non-contact charging
`module 20 are illustrated schematically.
`
`[0035]
`The non-contact charging module 20 and the primary side non-contact charging module 200 are aligned so
`that the primary side coil 210 and the charging coil 41 face each other. A magnetic field is also generated and
`power is transmitted between the inner portion 211 of the primary coil 210 and the inner portion 133 of the
`charging coil 41. The inner portion 211 and the inner portion 133 face each other. In addition, the inner
`
`Petitioner Samsung and Google
`Ex-1011, 0012
`
`

`

`portion 211 and the inner portion 133 are also close to the magnet 220 and are susceptible to adverse effects
`from the magnet 220.
`
`[0036]
`Further, the magnetic permeability of the magnetic sheet in the vicinity of the magnet 220 is reduced by the
`magnet 220 being arranged in the vicinity of the first magnetic sheet 44 and the second magnetic sheet 45.
`Of course, the first magnetic sheet 44 is closer to the magnet 220 than the second magnetic sheet 45 and is
`more easily affected by the magnet 220. Accordingly, the magnet 220 provided on the primary side non-
`contact charging module 200 weakens the magnetic flux of the primary side coil 210 and the charging coil 41,
`especially the inner portion 211 and the inner portion 133, and has an adverse effect. As a result, the
`transmission efficiency of non-contact charging is reduced. Therefore, in the case of FIG. 5(A), the adverse
`effect of the magnet 220 on the inner portion 133, which is susceptible to this effect, becomes large.
`
`[0037]
`In contrast, in FIG. 5(C), indicating a case where a magnet is