WO2013048059A1

WO2013048059A1 - Portable terminal having a wireless charging module

Info

Publication number: WO2013048059A1
Application number: PCT/KR2012/007515
Authority: WO
Inventors: 정희원; 고준호
Original assignee: 삼성전자 주식회사
Priority date: 2011-09-30
Filing date: 2012-09-20
Publication date: 2013-04-04

Abstract

The present invention relates to a portable terminal comprising: a window member including a screen area and a bezel area enclosing the screen area; a display module arranged at an inner surface of the window member so as to output a screen through the screen area; and a receiving part resonant antenna arranged at the inner surface of the window member and attached to the bezel area, wherein the receiving part resonant antenna is arranged in parallel with three sides of the display module. The thus-configured portable terminal may enable the bezel area formed around the display device formed at a front surface thereof and the internal space of a main body thereof corresponding to the bezel area to be utilized in arranging the receiving part resonant antenna, thereby enabling an additional communication function, for example, a wireless charging function to be easily provided to the portable terminal without increasing 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, a window member including a screen area and a bezel area surrounding the screen area; A display module disposed on an inner side of the window member to output a screen through the screen area; And a receiver resonant antenna attached to the edge region at an inner side of the window member, wherein the receiver resonant antenna is disposed side by side with at least three sides of the display module.

Preferably, the portable terminal further includes an electromagnetic shielding member attached to the edge region, and the electromagnetic shielding member is interposed between at least the display module and the receiver resonance antenna.

The electromagnetic shielding member may include a first shielding portion interposed between the display module and the receiver resonance antenna; And a second shielding portion extending from the first shielding portion and interposed between the circuit devices accommodated in the internal space of the terminal and the receiver resonance antenna.

The portable terminal may further include a main circuit board positioned inside the display module, and the circuit devices may be configured in the main circuit board.

In this case, the circuit devices may include a charge control circuit chip.

The portable terminal may include a flexible printed circuit board extending from the receiver resonant antenna; And a connecting connector provided at an end of the flexible printed circuit board.

In this case, the circuit devices may include a charge control circuit chip, and the receiver resonant antenna may be connected to the charge control circuit chip.

In the portable terminal having the above configuration, the receiver resonant antenna may be arranged to surround four side surfaces of the display module.

In addition, the present invention; A window member mounted on the front surface of the main body; A display module disposed on an inner side of the window member to output a screen; And a receiver resonant antenna attached to an inner surface of the window member around the display module, wherein the receiver resonant antenna is disposed side by side with the side of the display module.

The portable terminal includes a main circuit board provided inside the main body; And an electromagnetic shielding member attached to the window member.

The electromagnetic shielding member may include a first shielding portion interposed between the receiver resonance antenna and the display module, and a second shielding portion extending from the first shielding portion and interposed between the receiver resonance antenna and the main circuit board. desirable.

In this case, the main circuit board may include a charge control circuit chip, and the receiver resonant antenna may be connected to the charge control circuit chip.

The portable terminal includes a flexible printed circuit board extending from the receiver resonant antenna; And a connection connector provided at an end of the flexible printed circuit board, wherein the receiver resonant antenna is connected to the charging control circuit chip via the flexible printed circuit board and the connection connector.

In the portable terminal having the above configuration, the receiver resonant antenna is preferably arranged to surround the four sides of the display module.

The portable terminal configured as described above utilizes the bezel area provided around the display device on the front side and the corresponding internal space of the main body when disposing the receiver resonant antenna. Therefore, there is an advantage that it is easy to mount additional communication functions, for example, a wireless charging function in the portable terminal without substantially increasing 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 of a portion of the portable terminal shown in FIG.

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 display module 211b, a window member 211a coupled to the front surface of the display module 211b, and And a receiver resonant antenna 231 attached to an inner surface of the window member 211a around the display module 211b. The receiver resonant antenna 231 may be disposed in parallel with at least three sides of four sides of the display module 211b. In a specific embodiment of the present invention, the receiver resonant antenna 231 is arranged to surround all four sides of the display module 211b.

The main body 201 of the terminal 200 includes a battery mounting groove 219 (shown in FIG. 4) formed at a rear surface thereof, and the battery mounting groove 219 is concealed by a separate cover member 202. In addition, the main body 201 is provided with a camera module 227, the camera module 227 is exposed to the outside through the opening formed in the cover member 202. The main circuit board 213 on which various circuit devices, connectors, and sockets 215 are mounted is accommodated in the main body 201. The main circuit board 213 is located inside the display module 211b. The circuit devices disposed on the main circuit board 213 may include a circuit connected to the receiver resonant antenna 231, for example, a receiver circuit unit 233.

The window member 211a is coupled to the front surface of the main body 201 in a state in which the display module 211b is accommodated in the main body 201. The window member 211a may be divided into a screen area 212a and a bezel area 212b. The screen area 212a is an area facing the display module 211b and transmits a screen implemented through the display module 211b. The edge area 212b provides an area for specifically attaching or adhering the window member 211a to the main body 201, and blocks the inside of the main body 201 from being exposed to the outside. Done.

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 is in the form of a flat plate or film that can be attached to the inner surface of the window member 211a, more specifically, the edge area 212b, and is conductive such as copper plate, silver, or gold. The material may be configured in various patterns. 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 215 provided on the main circuit board 213 to charge the receiver resonant antenna 231 to the receiver circuit 233, more specifically to the receiver circuit 233. Connected to the control circuit chip. That is, the receiver resonant antenna 231 is connected to the receiver circuit 233 via the flexible printed circuit board 235 and the connection connector 237.

The receiver resonant antenna 231 is arranged in parallel with the display module 211b in a form surrounding all four sides of the display module 211b or parallel to at least three sides of the display module 211b. Preferably disposed. That is, when the rear surface of the main body 201 is shown in plan view, the receiver resonant antenna 231 is disposed around the display module 211b, and as shown in FIG. In the cross-sectional view, the receiver resonant antenna 231 is disposed in parallel with the display module 211b.

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 disposed between the 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 display module 211b. Preferably disposed.

Specifically, the electromagnetic shielding member 239 extends from the first shielding portion 239a and the first shielding portion 239a provided between the display module 211b and the receiver resonance antenna 231. The receiver resonant antenna 231 and the circuit device, and further, the second shield 239b positioned between the main circuit board 213. Therefore, the first shielding part 239a may be attached to the sidewall of the display module 211b. In addition, the second shield 239b is attached to the inner surface of the window member 211a while surrounding the receiver resonance antenna 231. Accordingly, as shown in FIG. 4, in the specific embodiment of the present invention, the electromagnetic shielding member 239 surrounds the entirety of the receiver resonant antenna 231 except for the portion facing the front of the main body 201. It can be seen that the electromagnetic shield member 239 is provided.

As described above, the reception circuit unit 233 may be configured to convert the signal power provided from the reception unit resonant antenna 231 into charging power by including a charging control circuit chip. In other words, the receiver resonant antenna 231 and the receiver circuit unit 233 may constitute a wireless charging module. Although the receiving circuit unit 233 may be disposed on a substrate provided separately from the main circuit board 213, in a specific embodiment of the present invention, a charging control circuit chip or an inductor is disposed on the main circuit board 213. And circuit elements.

As described above, since the receiver resonant antenna and the electromagnetic shielding member of the portable terminal according to the present invention are accommodated in the internal space of the main body of the terminal corresponding to the bezel area of the window member, the portable terminal does not substantially affect the thickness of the portable terminal. That is, as described above, the conventional wireless charging module consisting of the receiving unit resonant antenna and the receiving circuit unit is mounted on the portable terminal to cause a thickness increase of about 1.6mm, but the wireless charging module according to the present invention is substantially It is equipped with a wireless charging function without increasing the thickness to make the portable terminal convenient.

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 window member including a screen area and a bezel area surrounding the screen area;

A display module disposed on an inner side of the window member to output a screen through the screen area; And

A receiver resonant antenna attached to the edge region on the inner side of the window member;

The receiver resonant antenna is arranged in parallel with at least three sides of the display module.
The method of claim 1,

And an electromagnetic shielding member attached to the edge region and interposed between at least the display module and the receiver resonant antenna.
The method of claim 1, wherein the electromagnetic shield member,

A first shielding portion interposed between the display module and the receiver resonance antenna; And

And a second shield interposed between the circuit devices accommodated in the internal space of the terminal and the receiver resonant antenna extending from the first shield.
The method of claim 3, wherein

Further comprising a main circuit board located inside the display module,

And the circuit devices are configured on the main circuit board.
The portable terminal of claim 3, wherein the circuit devices comprise a charge control circuit chip.
The method of claim 3, wherein

A flexible printed circuit board extending from the receiver resonant antenna; And

And a connection connector provided at an end of the flexible printed circuit board.
The portable terminal of claim 6, wherein the circuit devices include a charge control circuit chip, and the receiver resonant antenna is connected to the charge control circuit chip.
The portable terminal of claim 1, wherein the receiver resonant antenna is arranged to surround four side surfaces of the display module.
In a portable terminal,

main body;

A window member mounted on the front surface of the main body;

A display module disposed on an inner side of the window member to output a screen; And

A receiver resonant antenna attached to an inner surface of the window member around the display module,

The receiver resonant antenna, characterized in that arranged in parallel with the side of the display module.
The method of claim 9,

A main circuit board provided inside the main body; And

And an electromagnetic shielding member attached to the window member.

The electromagnetic shielding member may include a first shielding portion interposed between the receiver resonance antenna and the display module and a second shielding portion extending from the first shielding portion and interposed between the receiver resonance antenna and the main circuit board. A portable terminal characterized by the above.
The portable terminal of claim 10, wherein the main circuit board includes a charge control circuit chip, and the receiver resonant antenna is connected to the charge control circuit chip.
The method of claim 11, wherein

A flexible printed circuit board extending from the receiver resonant antenna; And

And a connection connector provided at an end of the flexible printed circuit board,

And the receiver resonant antenna is connected to the charge control circuit chip via the flexible printed circuit board and the connection connector.
The portable terminal of any one of claims 9 to 12, wherein the receiver resonant antenna is arranged to surround four side surfaces of the display module.