WO2013048052A1

WO2013048052A1 - Portable terminal having a wireless charging module

Info

Publication number: WO2013048052A1
Application number: PCT/KR2012/007489
Authority: WO
Inventors: 박세호; 김준일; 이우람
Original assignee: 삼성전자 주식회사
Priority date: 2011-09-30
Filing date: 2012-09-19
Publication date: 2013-04-04

Abstract

The present invention relates to a portable terminal that includes: a body having a back surface on which a battery-mounting groove is formed; and a receiving-side resonant antenna arranged around the battery-mounting groove on the body. The receiving-side resonant antenna is arranged parallel to at least three sides of the battery-mounting groove. The thus-configured portable terminal can avoid being stacked on/under a battery pack when the receiving-side resonant antenna is arranged, as the antenna is arranged around the battery-mounting groove in which the battery pack is mounted. Thus, the portable terminal according to the present invention may include additional communication functions, e.g. a wireless charging function, without substantially affecting the thickness of the portable terminal.

Description

Portable terminal with wireless charging module

The present invention relates to a portable terminal including a cellular phone, a smart phone or a tablet PC, and more particularly, to a portable terminal having a wireless charging module.

Portable terminals represented by mobile communication terminals such as cellular phones and smart phones are equipped with more functions as multimedia services are expanded. In addition, as the various application programs are provided, the functions of the portable terminal are increased more rapidly and variously, and the user interface environment is being created to satisfy the various tastes of users and to be convenient to use.

Portable terminals may be classified into various types, such as a bar type, a folding type, a sliding type, a swing type terminal, and the like. When mobile communication such as voice calls and short message transmission were the main functions, foldable terminals or sliding terminals occupy most of the portable terminal market. However, as mentioned above, as multimedia services are further strengthened, the necessity for a more expanded display device is increasing. Therefore, in recent years, while expanding the display device of the portable terminal, the touch screen function is mounted on the display device, and the physical keypad is removed from the portable terminal. Equipped with a touch screen display device, the physical keypad is removed, thereby expanding the display device but reducing the thickness of the portable terminal to complement portability.

In addition to the antenna device for a mobile communication function, the portable terminal also includes an antenna for digital multimedia broadcasting (DMB), an antenna for a local area network (LAN), and a near field communication (NFC). Antenna devices are provided that enable communication in various frequency bands, such as antennas and antennas for Bluetooth. Recently, in addition to such antenna devices, an antenna and a module for providing a wireless charging function have been mounted.

1 is an exploded perspective view illustrating a portable terminal 100 according to an exemplary embodiment of the present invention. In particular, FIG. 1 illustrates a wireless charging system including a receiver resonant antenna 131 providing a wireless charging function and a receiver circuit provided on a substrate 133. A configuration having a module is shown.

As shown in FIG. 1, the terminal 100 includes a battery mounting groove 119 formed on the rear surface of the main body 101 and a camera module 117 provided on one side of the battery mounting groove 119. The battery mounting groove 119 is concealed by a cover member 102 detachably provided on the rear surface of the main body 101, and the user removes the cover member 102 as necessary to detach the battery mounting groove 119. ) Can be opened. In addition, the cover member 102 includes an opening 127 that exposes the camera module 117, thereby allowing the subject to be photographed even when coupled to the main body 101.

The inner side of the cover member 102 is provided with a wireless charging module. The wireless charging module includes a receiver resonant antenna 131 and a receiver circuit. In this case, the second cover member 141 may be provided on the inner surface of the cover member 102 to provide a stable installation structure of the receiver resonant antenna 131 and the receiver circuit.

The receiver resonant antenna 131 generates signal power by magnetic induction or magnetic resonance according to an electromagnetic field generated in the primary coil of the charger (not shown), and transmits the signal power to the receiver circuit unit. One side of the receiver resonant antenna 131 is formed with a connecting piece 131a connected to the receiver circuit. The receiver resonant antenna 131 is configured to be attached to the inner surface of the cover member 102. However, in the portable terminal 100 illustrated in FIG. 1, the second cover member 141 is connected to the cover member in a state in which the receiver resonant antenna 131 is attached to the inner surface of the second cover member 141. 102). Accordingly, the receiver resonant antenna 131 is disposed on the inner side surface of the cover member 102.

In this case, the terminal 100 is provided with an electromagnetic shielding member 139 to block the effect of the electromagnetic field formed around the receiver resonance antenna 131 on the circuit devices or the battery pack inside the main body 102. do. The electromagnetic shielding member 139 is attached on the cover member 102 and is interposed between the receiver resonant antenna 131 and the main body 102. As mentioned above, since the receiver resonant antenna 131 is directly attached to the second cover member 141, the electromagnetic shielding member 139 is first attached to the second cover member 141, and then the electromagnetic shielding. The receiver resonant antenna 131 may be attached to the member 139.

The receiver circuit unit includes a wireless charging circuit provided on the substrate 133 to convert the signal power received through the receiver resonant antenna 131 into charging power to provide the battery pack mounted in the terminal body 101. do. One side of the substrate 133 is provided with a connection portion 131b corresponding to the connection piece 131a. The receiving circuit unit is also attached to the second cover member 141 together with the receiving unit resonant antenna 131. As the receiver resonant antenna 131 and the receiver circuit are attached to the second cover member 141, the connection piece 131a and the connection part 131b are meshed with each other and electrically connected to each other.

A flexible printed circuit 135 is disposed at one side of the receiving circuit unit, and a connection pad 137 is provided at an end of the flexible printed circuit 135. The charging power provided from the receiving circuit unit is transferred to the main body 101 through the flexible printed circuit 135 and the connection pad 137. The main body 101 includes a connection terminal 115 provided on one side of the battery mounting groove 119, and the connection pad 137 is connected to the main body 101 when the cover member 102 is coupled to the main body 101. It is connected to the connection terminal 115 to provide charging power to the main body 101, specifically, a battery pack mounted to the main body 101.

2 schematically illustrates a configuration of a wireless charging module disposed on the cover member 102. FIG. 2 illustrates a height h, that is, a thickness of the wireless charging module, wherein the second cover member 141 is not shown, and the wireless charging module is directly attached to the cover member 102. Note that the configuration is illustrated.

The receiver resonant antenna 131 and the electromagnetic shielding member 139 are stacked on the inner surface of the cover member 102, and the receiver circuit unit is a circuit element such as a charge control circuit chip or an inductor disposed on the substrate 133. 133a. At this time, the thickness of the receiver resonant antenna 131 and the substrate 133 is generally 0.35mm, the electromagnetic shielding member 139 is 0.6mm, the maximum height of the circuit elements 133a is about 1.25mm. Therefore, the thickness of the wireless charging module on the inner surface of the cover member 102 reaches a maximum of 1.6mm.

As mentioned above, as the multimedia functions of the portable terminal have been strengthened, the display device has been expanded, and efforts to reduce the thickness and, furthermore, the weight of the portable terminal have been continued for portability. In this reality, the wireless charging module is convenient to charge the portable terminal, but there is a problem accompanied by an increase in the thickness of the portable terminal. In particular, in accordance with the trend of slimming portable terminals, the spread of portable terminals within 10 mm is becoming common, and mounting a wireless charging module having a thickness of 1.6 mm in the portable terminal results in a slimming of the portable terminal. .

Furthermore, when the receiver resonant antenna or the receiver circuit part is located facing the battery pack, there is a problem in that the thickness of the portable terminal is further increased. Since the battery pack has a rectangular shape and a constant volume, when the receiver resonance antenna is disposed facing the battery pack, the thickness of the terminal must be increased to secure a space for accommodating the receiver resonance antenna.

Accordingly, the present invention is to provide a portable terminal that has improved the ease of use by mounting an additional antenna, in particular, a wireless charging module including a receiver resonant antenna.

In addition, the present invention is to provide a portable terminal that is easy to ensure portability by suppressing the increase in thickness while mounting a wireless charging module.

Thus, the present invention, the battery mounting groove is formed on the rear body; And a receiver resonant antenna disposed around the battery mounting recess on the main body, wherein the receiver resonant antenna is arranged side by side with at least three sides of the battery mounting recess.

The portable terminal may further include an electromagnetic shielding member provided in the main body and disposed between the battery mounting groove and the receiver resonance antenna.

In this case, the electromagnetic shielding member, the first shielding portion disposed between the battery mounting groove and the receiver resonance antenna; And a second shielding portion extending from the first shielding portion and disposed between the circuit devices accommodated in the inner space of the main body and the receiver resonance antenna.

The portable terminal may further include an accommodation groove formed around the battery mounting groove at the rear of the main body, and the receiver resonant antenna may be attached to the accommodation groove.

In this case, the portable terminal may further include an electromagnetic shielding member attached to the receiving groove, and the receiver resonant antenna may be attached to the electromagnetic shielding member.

In addition, the receiver resonant antenna may be attached on the outer surface of the main body.

In this case, the portable terminal may further include an electromagnetic shielding member attached to an outer surface of the main body, and the receiver resonant antenna may be attached to the electromagnetic shielding member.

In addition, the receiver resonant antenna may be attached to the inner peripheral surface of the main body around the battery mounting groove.

In this case, the portable terminal may further include an electromagnetic shielding member attached to the receiver resonance antenna on the inner circumferential surface of the main body.

In addition, the portable terminal may further include an insulation member provided to surround the receiver resonance antenna.

The portable terminal may further include a main circuit board accommodated in the main body and having a receiving circuit unit to which the receiving unit resonant antenna is connected.

In this case, the receiving circuit unit may include a wireless charging circuit chip.

The portable terminal configured as described above may be disposed around the battery mounting groove in which the battery pack is mounted in arranging the receiver resonant antenna, thereby avoiding a stacked structure with the battery pack. For example, since a groove for accommodating the receiver resonant antenna is formed around the battery mounting groove on the rear surface of the main body concealed by the cover member, or the receiver resonant antenna can be disposed on the inner or outer circumferential surface of the main body, the portable terminal is substantially portable. An additional communication function, for example, a wireless charging function, is easy to mount in a portable terminal without affecting the thickness of the portable terminal.

1 is an exploded perspective view showing a portable terminal according to an embodiment of the prior art;

2 is a block diagram showing a wireless charging module of the portable terminal shown in FIG.

3 is an exploded perspective view showing a portable terminal according to an embodiment of the present invention;

4 is a cross-sectional view showing a portion of the portable terminal shown in FIG.

5 is a cross-sectional view illustrating a modification of the portable terminal shown in FIG. 4;

Figure 6 is an exploded perspective view showing a portable terminal according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

3 is an exploded perspective view illustrating a portable terminal 200 according to an exemplary embodiment of the present invention, and FIG. 4 is a cross-sectional view of a portion of the terminal 200 illustrated in FIG. 3.

3 and 4, the portable terminal 200 according to an exemplary embodiment of the present invention includes a main body 201 and a receiver resonant antenna 231 disposed on the main body 201. The main body 201 has a battery mounting groove 219 formed on one surface, preferably a rear surface thereof, and the receiver resonant antenna 231 has the battery mounting groove on at least three sides of the battery mounting groove 219. It is arranged side by side with 219.

The reception circuit unit 233 is provided inside the main body 201, and the reception circuit unit 233 may be configured to convert the signal power provided from the reception unit resonant antenna 231 into charging power. In other words, the receiver resonant antenna 231 and the receiver circuit unit 233 may constitute a wireless charging module.

The main body 201 includes a window member 211a coupled to a front surface of the main body 201 and accommodates the main circuit board 213 and the display module 211b. As mentioned above, a battery mounting groove 219 is formed on a rear surface of the main body 201, and a camera module 217 may be installed at one side of the battery mounting groove 219. The display module 211b is installed to face an inner surface of the window member 211a, and the main circuit board 213 is located inside the display module 211b. The receiving circuit unit 233 accommodated in the main body 201 may be disposed on a substrate provided separately from the main circuit board 213. However, in a specific embodiment of the present invention, the receiving circuit unit 233 is disposed on the main circuit board 213. It is composed of circuit elements such as a charge control circuit chip or an inductor.

The terminal 200 includes a separate cover member 202 to cover and protect the battery mounting groove 219. The cover member 202 is detachably provided on the rear surface of the main body 201 and has an opening 227 to expose the camera module 217 to provide a photographing path.

The receiver resonator antenna 231 is a form of a receiver resonator (RX resonator), and generates signal power by magnetic induction or magnetic resonance according to an electromagnetic field generated in a primary coil of a charger (not shown). 233). The receiver resonant antenna 231 may be formed in various patterns by using a conductive material such as copper plate, silver, or gold while being in the form of a flat plate or a film that may be attached to the outer circumferential surface of the main body 201. The receiving circuit unit 233 includes a wireless charging circuit including a circuit control element such as a charging control circuit chip or an inductor, thereby converting the signal power provided from the receiving unit resonant antenna 231 into charging power to install the battery mounting groove ( The battery pack coupled to 219 may be charged.

A flexible printed circuit board 235 is provided at one side of the receiver resonant antenna 231, and a connection connector 237 is provided at an end of the flexible printed circuit board 235. The connection connector 237 is connected to a socket (not shown) provided on the main circuit board 213 to connect the receiver resonant antenna 231 to the receiver circuit 233. That is, the flexible printed circuit board 235 and the connection connector 237 are substantially used as a connection device for connecting the receiver resonant antenna 231 to the receiver circuit 233.

In order to provide a space for attaching the receiver resonance antenna 231 to the outer circumferential surface of the main body 201, the main body 201 may include a receiving groove 215. The receiving groove 215 has a shape and depth corresponding to the shape of the receiver resonance antenna 231. In this case, the receiver resonant antenna 231 is arranged in parallel with the battery mounting groove 219 in a form surrounding all four sides of the battery mounting groove 219 or at least three of the battery mounting groove 219. Preferably arranged side by side on the dog side. That is, if the rear surface of the main body 201 is shown in a plan view, the receiver resonance antenna 231 is disposed around the battery mounting groove 219, and as shown in FIG. 4, the main body 201 is a side view. Alternatively, if shown in cross-sectional view, the receiver resonance antenna 231 is disposed in parallel with the battery mounting groove 219.

Since the receiver resonant antenna 231 is operated by magnetic induction or magnetic resonance, it generates considerable electromagnetic waves. Accordingly, in order to block an influence on the battery pack coupled to the main body 201 or the circuit devices inside the main body 201, for example, the circuit of the main circuit board 213, the terminal 200 is provided. The electromagnetic shielding member 239 may be provided. The electromagnetic shielding member 239 is between circuit devices accommodated in the internal space of the receiver resonant antenna 231 and the main body 201, and between the receiver resonant antenna 231 and the battery mounting groove 219. It is preferably arranged in.

Referring to FIG. 4, as mentioned above, the electromagnetic shielding member 239 includes a first shielding portion 239a provided between the battery mounting groove 219 and the receiver resonant antenna 231, and The second shield 239b extends from the first shield 239a and is positioned between the receiver resonant antenna 231 and the circuit device, specifically, the main circuit board 213. Accordingly, the first shielding part 239a is attached to the inner wall of the receiving groove 215, and the second shielding part 239b is attached to the bottom surface of the receiving groove 215, respectively. Of course, the electromagnetic shielding member 239 may be provided to surround the receiver resonant antenna 231. However, it should be noted that the electromagnetic shield member 239 should open the receiver resonant antenna 231 toward the outer surface of the main body 201 in order to interact with the primary coil provided to an external charger or the like. As a result, the receiver resonant antenna 231 generates signal power by magnetic induction or magnetic resonance, and blocks electromagnetic waves generated around the receiver resonant antenna 231 from affecting the inside of the main body 201. do.

FIG. 5 illustrates an example of a modification of the structure of the portable terminal illustrated in FIGS. 3 and 4. In detail, the portable terminal illustrated in FIG. 5 differs from the structure of the portable terminal illustrated in FIG. 4 in that the receiver resonant antenna is accommodated inside the main body. Therefore, for the configuration that can be easily understood through the structure of the portable terminal shown in Figs. 3 and 4 it is noted that the same reference numerals in the drawings or omitted, the detailed description thereof may also be omitted.

In the portable terminal 200 illustrated in FIG. 5, a receiver resonant antenna 231 is disposed around the battery mounting groove 219 inside the main body 201. The receiver resonator antenna 231 is a kind of receiver resonator, and may be manufactured in the form of a flat plate or a film or a flexible printed circuit board. That is, the receiver resonant antenna 231 may be configured in various patterns using a copper plate, a conductive material such as silver and gold, and may have a shape of a flexible printed circuit board. The receiver resonant antenna 231 is attached to an inner circumferential surface facing the rear surface of the main body 201. The main body 201 is made of a synthetic resin material so that signal power provided from an external charger can be smoothly transmitted to the receiver resonant antenna 231.

In a state in which the receiver resonant antenna 231 is attached to an inner circumferential surface of the main body 201, an electromagnetic shielding member 239 may be attached to an inner circumferential surface of the main body 201. The electromagnetic shielding member 239 includes a first shielding part 239a and a second shielding part 239b. The first shield 239a is interposed between the battery mounting groove 219 and the receiver resonant antenna 231, and the second shield 239b extends from the first shield 239a while the The receiver is interposed between the resonance antenna 231 and the circuit devices inside the main body 201. On the other hand, it is preferable that the receiver resonant antenna 231 is completely wrapped with the electromagnetic shield member 239 so as not to be exposed to the inside of the main body 201. Thus, while the receiver resonant antenna 231 is positioned side by side with the battery pack mounted in the battery mounting groove 219 inside the main body 201, the electromagnetic shield member 239 is the receiver resonant antenna 231 ) Is interposed between the battery mounting groove 219 and the circuit devices to prevent electromagnetic interference due to magnetic resonance or magnetic induction.

6 is an exploded perspective view illustrating a portable terminal 300 according to another exemplary embodiment of the present invention. The portable terminal 300 illustrated in FIG. 6 differs from the previous embodiments in that the receiver resonant antenna 331 is disposed to surround the outer surface of the terminal body 201. Therefore, for the components easily understood through the preceding embodiments, the same reference numerals in the drawings or the same, it should be noted that detailed description may also be omitted.

The resonant antenna 331 of the receiver of the portable terminal 300 according to the present exemplary embodiment has a band shape surrounding the outer surface of the terminal body 201, and includes a battery mounting groove 219 formed in the body 201, and moreover. The battery pack is disposed in parallel with the battery pack mounted in the battery mounting groove 219. In this case, since the receiver resonant antenna 331 is disposed to surround the outer surface of the main body 201, it is not necessary to arrange the entire outer surface of the main body 201 as shown in FIG. 6. . Among the outer surfaces of the main body 201, even if the receiver resonant antenna 331 is disposed to surround at least three outer surfaces, magnetic resonance or magnetic induction structure for wireless charging may be implemented.

The receiver resonant antenna 331 includes a flexible printed circuit board 235 for connection with a receiver circuit 233 provided inside the main body 201. A connector is provided at an end of the flexible printed circuit board 235 to be connected to a socket (not shown) installed in the main circuit board 213. On the other hand, to block the effect of the electromagnetic wave generated by the receiver resonant antenna 331 on the battery pack coupled to the inside of the main body 201 and the battery mounting groove 219, the terminal 300 is electromagnetic It is preferable to provide the shield member 339. The electromagnetic shielding member 339 is directly attached to an outer surface of the main body 201 and is disposed between the receiver unit resonant antenna 331 and circuit devices provided in an inner space of the main body 201 and a battery pack. . That is, the receiver resonant antenna 331 is substantially attached to the electromagnetic shield member 339.

Meanwhile, since the receiver resonant antenna 331 is made of a conductive material such as copper foil, silver, or gold and has a magnetic induction or magnetic resonance structure, an induction current or a leakage current may flow through the receiver resonant antenna 331. Therefore, when the receiver resonant antenna 331 is installed on the outer surface of the main body 201, it is preferable to prevent the receiver resonant antenna 331 from being directly exposed to the outside by using an insulating member 341.

The insulating member 341 has a band shape similar to that of the receiver resonant antenna 331 and is attached to an outer surface of the receiver resonant antenna 331. In this case, the insulating member 341 is not necessarily attached to the outer surface of the receiver resonant antenna 331. For example, a metallic material portion of the receiver resonant antenna 331 may be coated with an insulating material to form an insulating member integrally with the receiver resonant antenna 331.

As described above, since the receiver resonant antenna and the electromagnetic shielding member of the portable terminal according to the present invention are disposed in parallel with the battery mounting recess, the thickness of the portable terminal is not substantially affected. That is, as described above, the conventional wireless charging module is mounted on the portable terminal to cause a thickness increase of about 1.6 mm, but the wireless charging module according to the present invention does not substantially increase the thickness of the portable terminal. It is equipped with a function to make a portable terminal convenient to use.

In the foregoing detailed description of the present invention, specific embodiments have been described. However, it will be apparent to those skilled in the art that various modifications can be made without departing from the scope of the present invention.

Claims

In a portable terminal,

A main body having a battery mounting groove formed on its rear surface; And

On the main body, including a receiver resonant antenna disposed around the battery mounting groove,

The receiver resonator antenna is a portable terminal, characterized in that arranged in parallel with at least three sides of the battery mounting groove.
The method of claim 1,

And a electromagnetic shielding member provided in the main body and disposed between the battery mounting groove and the receiver resonant antenna.
The method of claim 2, wherein the electromagnetic shield member,

A first shield disposed between the battery mounting groove and the receiver resonance antenna; And

And a second shielding portion extending from the first shielding portion and disposed between the circuit devices accommodated in the inner space of the main body and the receiver resonance antenna.
The method of claim 1,

Further comprising a receiving groove formed around the battery mounting groove on the back of the main body,

The receiver resonant antenna is a portable terminal, characterized in that attached to the receiving groove.
The method of claim 4, wherein

Further provided with an electromagnetic shield member attached to the receiving groove,

And the receiver resonant antenna is attached to the electromagnetic shielding member.
The method of claim 5, wherein the electromagnetic shield member,

A first shielding portion attached to an inner wall of the receiving groove between the battery mounting groove and the receiver resonance antenna; And

And a second shielding portion extending from the first shielding portion and attached to the bottom surface of the receiving groove.
The portable terminal of claim 1, wherein the receiver resonance antenna is attached to an outer surface of the main body.
The method of claim 7, wherein

And an electromagnetic shielding member attached to an outer surface of the main body,

And the receiver resonant antenna is attached to the electromagnetic shielding member.
The portable terminal of claim 1, wherein the receiver resonant antenna is attached to an inner circumferential surface of the main body around the battery mounting groove.
The method of claim 9,

And an electromagnetic shielding member attached to the receiver resonant antenna on an inner circumferential surface of the main body.
The method of claim 10, wherein the electromagnetic shielding member,

A first shield disposed between the battery mounting groove and the receiver resonance antenna; And

And a second shielding portion extending from the first shielding portion and disposed between the circuit devices accommodated in the inner space of the main body and the receiver resonance antenna.
The portable terminal of claim 9, further comprising an insulation member provided to surround the receiver resonance antenna.
The method according to any one of claims 1 to 12,

And a main circuit board accommodated in the main body and having a receiving circuit unit to which the receiving unit resonant antenna is connected.
The portable terminal of claim 13, wherein the receiving circuit unit comprises a charging control circuit chip.