WO2021010526A1

WO2021010526A1 - Mobile terminal and auxiliary device coupled thereto

Info

Publication number: WO2021010526A1
Application number: PCT/KR2019/008856
Authority: WO
Inventors: 김영태; 강혜영; 김상훈; 박찬신
Original assignee: 엘지전자 주식회사
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2021-01-21

Abstract

Provided is an auxiliary device comprising: a terminal case having a mobile terminal mounting region for checking or using the display of the mobile terminal while charging an external device; a foldable cover rotatably coupled to one edge of the terminal case to selectively cover the mounting region; and a charging coil on the side of the auxiliary device, provided on the foldable cover so as to form a charging region on one surface of the inside or the outside of the foldable cover, wherein the charging coil on the side of the auxiliary device is connected to the power supply unit of the mobile terminal through the circuit in the terminal case.

Description

Mobile terminal and auxiliary device coupled thereto

The present invention relates to a mobile terminal and an auxiliary device that performs an additional function by being coupled to the mobile terminal.

A mobile terminal refers to a handheld computing device that a user can carry and use without being fixed at a location. A representative example of a mobile terminal is a smart phone.

The functions of mobile terminals are diversifying. For example, there are functions of data and voice communication, taking pictures and videos through a camera, recording voice, playing music files through a speaker system, and outputting images or videos to the display unit. Some terminals add an electronic game play function or perform a multimedia player function. In particular, recent mobile terminals can receive multicast signals providing visual content such as broadcasting and video or television programs.

As the functions of such a mobile terminal are diversified, it is implemented in the form of a multimedia player with complex functions such as, for example, taking photos or videos, playing music or video files, receiving games, and broadcasting. have.

In particular, as 5G communication standards are commercialized, various application cases are being developed that take advantage of advantages such as high communication speed and low latency. For example, it is possible for several devices using a communication network to interwork with each other to interact with each other without delay, or to use them by seamlessly transmitting and receiving high-capacity data.

In accordance with this trend, the development of a multitasking method such as outputting a plurality of contents on a large screen or outputting a plurality of contents on a plurality of screens is also continuing. The mobile terminal is combined with the case and the case is moved. In addition to physical protection of the terminal, there are cases in which other functions are performed. For example, an extended display may be provided in the case to implement a plurality of displays, or an auxiliary power supply provided in the case may supply additional power to the mobile terminal, and thus various usability may be provided.

Meanwhile, in recent years, mobile terminals capable of wireless charging have been widely spread, and such a wireless charging structure is configured such that not only an external charger charges the mobile terminal but also the mobile terminal charges an external device.

However, since the conventional wireless charging structure is provided on the rear of the mobile terminal, when the mobile terminal charges an external device, the mobile terminal must be turned upside down, so that the display on the front of the mobile terminal cannot be utilized.

An object of the present invention is to implement a structure capable of charging an external device through an auxiliary device by supplementing the disadvantages of the existing wireless charging structure for an external device.

In order to achieve the above or other objects, according to an aspect of the present invention, a terminal case forming a seating area of a mobile terminal, a foldable cover rotatably coupled to one edge of the terminal case to selectively cover the seating area, and And an auxiliary device-side charging coil provided on the foldable cover to form a charging area on either side of the inside or outside of the foldable cover, and the auxiliary device-side charging coil is a mobile terminal through a circuit of the terminal case. Provides an auxiliary device connected to the power supply of the.

In addition, according to another aspect of the present invention, further comprising a second display to form an output area on the inner side of the foldable cover, the auxiliary device-side charging coil forms a charging area on the outer side of the foldable cover Provides an auxiliary device to do.

In addition, according to another aspect of the present invention, the auxiliary device-side charging coil provides an auxiliary device for forming a charging region for Tx operation on an inner surface of the foldable cover.

In addition, according to another aspect of the present invention, further comprising a second display forming an output area on one side of the foldable cover, the auxiliary device-side charging coil forms a charging area on the other side of the foldable cover And, the foldable cover is detachable from the terminal case, and provides an auxiliary device capable of being coupled in a forward direction so that the charging region faces outward or in a reverse direction.

Further, according to another aspect of the present invention, when the foldable cover is coupled to the terminal case, a pair of foldable cover side coil terminals and a terminal case side coil terminal contact each other to connect the auxiliary device side charging coil to the power supply unit. Further comprising a pair, the foldable cover side coil terminal pair provides an auxiliary device provided on a coupling symmetry axis that can be located at the same point when the foldable cover is coupled in the forward or reverse direction.

In addition, according to another aspect of the present invention, the foldable cover further includes a foldable display terminal and a terminal case side display terminal for connecting the second display to the power supply unit by contacting each other when the foldable cover is forwardly coupled to the terminal case. Provides an auxiliary device to do.

In addition, according to another aspect of the present invention, a wireless charging circuit for mutually switching the AC current of the auxiliary device-side charging coil and the DC current of the power supply unit; And

It provides an auxiliary device further comprising an antenna switch provided between the wireless charging circuit and the auxiliary device-side charging coil to selectively connect the auxiliary device-side charging coil or the charging coil provided in the mobile terminal.

The effect of the auxiliary device according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, a mobile terminal may be wirelessly charged, or an external device may be charged with a power supply unit of the mobile terminal.

In addition, according to at least one of the embodiments of the present invention, it is possible to check or use the display of the mobile terminal while charging the external device.

Further scope of applicability of the present invention will become apparent from the detailed description below. However, since various changes and modifications within the spirit and scope of the present invention can be clearly understood by those skilled in the art, detailed description and specific embodiments such as preferred embodiments of the present invention are understood to be given by way of example only. Should be.

FIG. 1 is a perspective view showing a mobile terminal and an auxiliary device of a terminal set related to the present invention before being combined.

2 is a perspective view illustrating a mobile terminal and an auxiliary device of a terminal set related to the present invention after being combined.

3 is a block diagram illustrating a mobile terminal related to the present invention.

4(a) is a front perspective view of a mobile terminal related to the present invention, and FIG. 4(b) is a rear perspective view.

5 is a block diagram illustrating a partial configuration of a terminal set according to the present invention.

6 is a block diagram of another embodiment showing a partial configuration of a terminal set related to the present invention.

7 is an embodiment of a terminal set related to the present invention.

8 is another embodiment of a terminal set related to the present invention.

9 is a diagram illustrating an embodiment of a terminal set in a state in which the foldable cover is opened 360 degrees in the state of FIG. 8(c).

10 is a conceptual diagram of an embodiment of a terminal set related to the present invention.

11 is a conceptual diagram of another embodiment of a terminal set related to the present invention.

12 is a conceptual diagram of an embodiment of a terminal set related to the present invention.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all modifications included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers, such as first and second, may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

1 and 2 are perspective views, respectively, before and after coupling of the mobile terminal 100 and the auxiliary device 200 of the terminal set 10 related to the present invention.

The terminal set 10 of the present invention includes a mobile terminal 100 having a display and an auxiliary device 200 to which the mobile terminal 100 is coupled. The mobile terminal 100 is coupled to the seating area 2101 of the auxiliary device 200 while the display is exposed to the front. The auxiliary device 200 may be divided into a terminal case 210 and a foldable cover 260 again. The terminal case 210 forms a seating area 2101 to which the mobile terminal 100 is coupled, and a foldable cover 260 is connected to one edge of the terminal case 210 and rotates, and selectively opens and closes the display of the mobile terminal 100 or the seating area 2101 by the rotation.

In some cases, the foldable cover 260 may mount an extended display to provide a multi-display together with the mobile terminal 100. The display provided in the mobile terminal 100 is defined as the first display 151, and the extended display provided in the auxiliary device 200, particularly the foldable cover 260, is defined as the second display 261.

The first display 151 and the second display 261 may be output in connection with each other. For example, the first display 151 and the second display 261 may be mirrored and output, or a screen output on the first display 151 may be moved to the second display 261 and output, or An execution screen of one application or a plurality of linked applications may be divided and output on the two

displays

151 and 261. For example, the controller of the game application may output the game content to the first display 151 and the second display 261. That is, the terminal set 10 of the present invention can operate like a single device having a plurality of displays, which means that the auxiliary device 200 shares several configurations of the mobile terminal 100.

More specifically, the control unit and the power supply unit of the mobile terminal 100 may supply power to the second display 261 as well as the first display 151 and transmit and receive data. Accordingly, the auxiliary device 200 can operate depending on the mobile terminal 100 without a separate control unit or a power supply unit. Accordingly, the weight or volume of the terminal set 10 can be reduced, and manufacturing cost can be reduced.

In order to supply power to the second display 261 and transmit and receive data, the mobile terminal 100 is physically coupled to the auxiliary device 200, and the auxiliary device 200 includes the mobile terminal 100 and the second display 261. A circuit for electrically connecting the electronic configuration of the mobile terminal and the electronic configuration of the mobile terminal may be provided.

The above description and the embodiments to be described later assume that the second display 261 is provided on the foldable cover 260, but it is not necessarily required that the second display 261 is provided. It may be provided as a foldable cover 260 covering the first display 151 of the mobile terminal 100 without a display.

3 is a block diagram illustrating a mobile terminal 100 related to the present invention.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190. And the like. The components shown in FIG. 3 are not essential for implementing the mobile terminal, and thus the mobile terminal described in the present specification may have more or fewer components than the components listed above.

More specifically, among the components, the wireless communication unit 110 includes a wireless communication unit between the mobile terminal 100 and a wireless communication system, between the mobile terminal 100 and other mobile terminals, or between the mobile terminal 100 and an external server. It may include one or more modules that enable communication. In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast reception module 111, a mobile communication module 112, a wireless Internet module 113, a short-range communication module 114, and a location information module 115. .

The input unit 120 includes a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, or an audio input unit, and a user input unit 123 for receiving information from a user, for example, , A touch key, a mechanical key, etc.). The voice data or image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, information on surrounding environments surrounding the mobile terminal, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. G-sensor, gyroscope sensor, motion sensor, RGB sensor, infrared sensor (IR sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic sensor) , Optical sensor (for example, camera (see 121)), microphone (microphone, see 122), battery gauge, environmental sensor (for example, barometer, hygrometer, thermometer, radiation detection sensor, It may include at least one of a heat sensor, a gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of the display unit 151, the sound output unit 152, the hap tip module 153, and the light output unit 154 can do. The display unit 151 of the mobile terminal 100 corresponds to the first display described in FIGS. 1 and 2. The display unit 151 may implement a touch screen by forming a layer structure or integrally with the touch sensor. Such a touch screen can function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user, and can provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a passage between various types of external devices connected to the mobile terminal 100. The interface unit 160 includes a wired/wireless headset port, a charging port, a wired/wireless data port, a memory card port, and a port for connecting a device equipped with an identification module. It may include at least one of (port), an audio input/output (I/O) port, an input/output (video I/O) port, and an earphone port. The mobile terminal 100 may perform appropriate control related to the connected external device in response to the connection of the external device to the interface unit 160.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications driven by the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of delivery for basic functions of the mobile terminal 100 (eg, incoming calls, outgoing functions, message reception, and outgoing functions). Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100. The controller 180 may provide or process appropriate information or functions to a user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

In addition, in order to drive the application program stored in the memory 170, the controller 180 may control at least some of the components discussed with reference to FIG. 3. Furthermore, in order to drive the application program, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 with each other.

The power supply unit 190 receives external power or internal power under the control of the controller 180 to supply power to each of the components included in the mobile terminal 100. The power supply unit 190 includes a battery, and the battery may be a built-in battery or a replaceable battery.

In addition, the power supply unit 190 may include a charging port, and the charging port may be configured as an example of an interface 160 to which an external charger supplying power for charging a battery is electrically connected.

At least some of the components may operate in cooperation with each other to implement an operation, control, or control method of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170.

4(a) is a front perspective view of the mobile terminal 100 related to the present invention, and FIG. 4(b) is a rear perspective view.

The mobile terminal 100 of the present invention may be implemented as a bar-shaped terminal body as shown in FIGS. 4(a) and 4(b), but the present invention is not limited thereto, and as described in FIGS. 1 and 2 It is sufficient if (100) is a form capable of being combined with an auxiliary device. As an example, a mobile terminal in the form of a smart watch may also be applied to the present invention. In this case, the terminal case of the auxiliary device is coupled to the rear surface of the smart watch mobile terminal, and the foldable cover is hinged to the terminal case so as to be rotatable. The front of the mobile terminal will be optionally covered.

The mobile terminal 100 includes a case (eg, a frame, a housing, a cover, etc.) forming an exterior. As shown, the mobile terminal 100 may include a front case 101 and a rear case 102. Various electronic components are disposed in an inner space formed by the combination of the front case 101 and the rear case 102. At least one middle case may be additionally disposed between the front case 101 and the rear case 102.

A display unit 151 is disposed on the front of the terminal body to output information. As illustrated, the window 151a of the display unit 151 may be mounted on the front case 101 to form the front surface of the terminal body together with the front case 101.

In some cases, electronic components may be mounted on the rear case 102 as well. Electronic components that can be mounted on the rear case 102 include a removable battery, an identification module, and a memory card. In this case, a rear cover 103 for covering the mounted electronic component may be detachably coupled to the rear case 102. Accordingly, when the rear cover 103 is separated from the rear case 102, the electronic components mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a part of the side surface of the rear case 102 may be exposed. In some cases, when the rear case 102 is combined, the rear case 102 may be completely covered by the rear cover 103. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b, the light output unit 154, the flash 124, and the rear input unit 123a to the outside.

These

cases

101, 102, 103 may be formed by injection of synthetic resin or may be formed of a metal such as stainless steel (STS), aluminum (Al), titanium (Ti), or the like.

Unlike the above example in which a plurality of cases provide an inner space for accommodating various electronic components, the mobile terminal 100 may be configured such that one case provides the inner space. In this case, a unibody mobile terminal 100 in which synthetic resin or metal is connected from the side to the rear may be implemented.

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) that prevents water from permeating into the terminal body. For example, the waterproof unit is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, and the combination thereof It may include a waterproof member for sealing the inner space.

The mobile terminal 100 includes a display unit 151, first and second

sound output units

152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, and first and second sound output units.

Cameras

121a and 121b, first and

second operation units

123a and 123b, microphone 122, interface unit 160, and the like may be provided.

Hereinafter, as shown in FIGS. 4(a) and 4(b), the display unit 151, the first sound output unit 152a, the proximity sensor 141, and the illuminance sensor 142 are on the front of the terminal body. ), a first camera 121a is disposed, a second operation unit 123b, a second sound output unit 152b, a microphone 122 and an interface unit 160 are disposed on the side of the terminal body, and the terminal body The mobile terminal 100 in which the light output unit 154, the operation unit 123a, the second camera 121b, and the flash 124 are disposed on the rear side of will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as necessary, or may be disposed on different sides. For example, the operation unit may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the rear surface of the terminal body rather than the side surface of the terminal body.

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, the display unit 151 may display execution screen information of an application program driven in the mobile terminal 100, or UI (User Interface) and GUI (Graphic User Interface) information according to such execution screen information. .

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display. display), a 3D display, and an e-ink display.

In addition, two or more display units 151 may exist depending on the implementation type of the mobile terminal 100. In this case, the mobile terminal 100 may have a plurality of display units spaced apart or integrally disposed on one surface, or may be disposed on different surfaces.

The display unit 151 may include a touch sensor that senses a touch on the display unit 151 so as to receive a control command by a touch method. Using this, when a touch is made to the display unit 151, the touch sensor detects the touch, and the controller 180 may be configured to generate a control command corresponding to the touch based on this. Content input by the touch method may be letters or numbers, or menu items that can be indicated or designated in various modes.

On the other hand, the touch sensor is configured in the form of a film having a touch pattern and is disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or a metal wire patterned directly on the rear surface of the window 151a. May be. Alternatively, the touch sensor may be integrally formed with the display. For example, the touch sensor may be disposed on a substrate of the display or may be provided inside the display.

In this way, the display unit 151 may form a touch screen together with a touch sensor, and in this case, the touch screen may function as a user input unit 123 (see FIG. 3 ). In some cases, the touch screen may replace at least some functions of the operation unit.

The first sound output unit 152a may be implemented as a receiver that transmits a call sound to the user's ear, and the second sound output unit 152b is a loud speaker that outputs various alarm sounds or multimedia playback sounds. ) Can be implemented.

A sound hole for emitting sound generated from the first sound output unit 152a may be formed in the window 151a of the display unit 151. However, the present invention is not limited thereto, and the sound may be configured to be emitted along an assembly gap between structures (eg, a gap between the window 151a and the front case 101). In this case, the externally formed hole for sound output is not visible or hidden, so that the appearance of the mobile terminal 100 may be more simple.

The light output unit 154 is configured to output light for notifying when an event occurs. Examples of the event include message reception, call signal reception, missed call, alarm, schedule notification, email reception, and information reception through an application. When the user's event confirmation is detected, the controller 180 may control the light output unit 154 to terminate the light output.

The first camera 121a processes an image frame of a still image or moving image obtained by an image sensor in a photographing mode or a video call mode. The processed image frame may be displayed on the display unit 151 and may be stored in the memory 170.

The

manipulation units

123a and 123b are an example of the user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100, and may be collectively referred to as a manipulating portion. The

manipulation units

123a and 123b may be employed in any manner as long as the user is manipulated while receiving a tactile feeling such as touch, push, and scroll. In addition, the

manipulation units

123a and 123b may be employed in a manner in which a user's tactile feeling is not applied through proximity touch, hovering touch, or the like.

The operation unit 123a may be a push key (mechanical key), or may be configured as a combination of a touch key and a push key. Further, the manipulation unit 123a may be configured in a layered form with a fingerprint sensor.

Content input by the

manipulation units

123a and 123b may be set in various ways. For example, receiving commands such as menu, home key, cancellation, search, etc., adjusting the volume of sound output from the first or second

sound output units

152a, 152b, and entering the touch recognition mode of the display unit 151 Commands such as conversion can be input.

Meanwhile, as another example of the user input unit 123, a rear input unit (not shown) may be provided on the rear surface of the terminal body. This rear input unit is manipulated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on/off, start, end, scroll, etc., control the volume of sound output from the first and second

sound output units

152a and 152b, and touch recognition mode of the display unit 151 You can receive commands such as conversion of. The rear input unit may be implemented in a form capable of inputting by a touch input, a push input, or a combination thereof.

The rear input unit may be disposed to overlap the front display unit 151 in the thickness direction of the terminal body. As an example, when the user holds the terminal body with one hand, the rear input unit may be disposed on the rear upper end of the terminal body so that the user can easily manipulate the terminal body using the index finger. However, the present invention is not necessarily limited thereto, and the position of the rear input unit may be changed.

When the rear input unit is provided on the rear surface of the terminal body, a new type of user interface can be implemented using the rear input unit. In addition, the display unit 151 may be configured with a larger screen.

Meanwhile, the mobile terminal 100 may be provided with a fingerprint recognition sensor for recognizing a user's fingerprint, and the controller 180 may use fingerprint information detected through the fingerprint recognition sensor as an authentication means. The fingerprint recognition sensor may be embedded in the display unit 151 or the user input unit 123.

The microphone 122 is configured to receive a user's voice and other sounds. The microphone 122 may be provided in a plurality of locations and configured to receive stereo sound.

The interface unit 160 becomes a passage through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 is a connection terminal for connection with other devices (eg, earphones, external speakers), a port for short-range communication (eg, an infrared port (IrDA Port), a Bluetooth port (Bluetooth Port), a wireless LAN port, etc.], or at least one of a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented in the form of a socket for accommodating an external card such as a subscriber identification module (SIM) or a user identity module (UIM), or a memory card for storing information.

A second camera 121b may be disposed on the rear surface of the terminal body. In this case, the second camera 121b has a photographing direction substantially opposite to that of the first camera 121a.

The second camera 121b may include a plurality of lenses arranged along at least one line. The plurality of lenses may be arranged in a matrix format. Such a camera may be referred to as an'array camera'. When the second camera 121b is configured as an array camera, an image may be photographed in various ways using a plurality of lenses, and an image of better quality may be obtained.

The flash 124 may be disposed adjacent to the second camera 121b. The flash 124 illuminates light toward the subject when the subject is photographed by the second camera 121b.

A second sound output unit 152b may be additionally disposed on the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a, and may be used to implement a speakerphone mode during a call.

At least one antenna for wireless communication may be provided in the terminal body. The antenna may be embedded in the terminal body or may be formed in a case. For example, an antenna forming a part of the broadcast reception module 111 (refer to FIG. 3) may be configured to be retractable from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 3) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 that is built into the terminal body or configured to be detachable from the outside of the terminal body.

The battery 191 may be configured to receive power through a power cable connected to the interface unit 160. In addition, the battery 191 may be configured to enable wireless charging through a wireless charger. The wireless charging may be implemented by a magnetic induction method or a resonance method (magnetic resonance method).

On the other hand, in this drawing, the rear cover 103 is coupled to the rear case 102 so as to cover the battery 191 to limit the separation of the battery 191, and to protect the battery 191 from external shock and foreign substances. It is illustrated. When the battery 191 is configured to be detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

5 is a block diagram illustrating a partial configuration of a terminal set 10 according to the present invention.

The terminal set 10 of the present invention is provided with two charging coils. One is provided in the mobile terminal 100, and one is provided in the auxiliary device 200, in particular, the foldable cover 260. In order to distinguish the two charging coils, a charging coil provided in the mobile terminal 100 is defined as a charging coil 195 on the terminal side, and a charging coil provided in the auxiliary device 200 is defined as a charging coil 271 on the auxiliary device side.

The mobile terminal 100 is provided with a power supply unit 190, which is consistent with the power supply unit 190 described in FIG. 3. The power supply unit 190 stores power and may be implemented in the form of a battery. The power supply unit 190 may be charged by receiving power from a charging coil, or may supply power through a charging coil to charge an external device. The detailed driving mode will be described later.

The terminal-side charging coil 195 is connected to the power supply unit 190 through a wireless charging circuit 193 and a power supply control unit 192 (Power Management IC; PMIC) constituting the Rx IC or Tx IC. The auxiliary device-side charging coil 271 is also connected to the power supply unit 190 through the wireless charging circuit 193 and the power supply control unit 192, similar to the terminal-side charging coil 195.

The Rx IC of the wireless charging circuit 193 constitutes a rectifier circuit that converts alternating current (AC) to direct current (DC) so that the power supply unit 190 can receive power. This is defined as the terminal set 10 operates as Rx. On the other hand, the Tx IC of the wireless charging circuit 193 constitutes an inverter circuit that converts DC into AC, and power is transmitted from the power supply unit 190 to charge external devices. This is defined as the terminal set 10 operates with Tx.

The power supply control unit 192 corresponds to a control unit that controls the power supply unit 190, and receives power from the Rx IC and transmits it to the power supply unit 190, or receives power from the power supply unit 190 and transmits the power to the Tx IC. It also serves to supply power to other components of the terminal set 10. For example, it serves to control the power supply unit 190 to supply power to the first display 151 and the second display 261. That is, the power supply control unit 192 controls power supply as a component included in the control unit 180 described in FIG. 3.

The wireless charging circuit 193 and the power supply control unit 192 must be provided in the mobile terminal 100. This is to perform wireless charging even when the mobile terminal 100 is not coupled with the auxiliary device 200.

When the Rx IC and the Tx IC are implemented in a single chipset, the antenna switch 194 connects the power supply 190 to the terminal-side charging coil 195 or the auxiliary device-side charging coil 271 It connects to and activates the connected charging coil. Whether the antenna switch 194 is connected to the auxiliary device-side charging coil 271 or the terminal-side charging coil 195 may be switched according to a user input.

The antenna switch 194 has two contacts 1942 connected to both ends of the wiring of the auxiliary device-side charging coil 271, and another two contacts 1941 connected to both ends of the wiring of the terminal-side charging coil 195 Has. Two contacts connected to one side are connected to both ends of a corresponding charging coil, respectively.

6 is a block diagram of another embodiment showing some configurations of a terminal set 10 related to the present invention.

The embodiment of FIG. 5 limits that the wireless charging circuit 193 is implemented in a single chipset, but when implemented through two chipsets as in the embodiment of FIG. 6, the antenna switch 194 can be omitted as well as auxiliary. The device-side charging coil 271 and the terminal-side charging coil 195 can be used simultaneously. For example, the power supply unit 190 may be charged through the terminal-side charging coil 195 and the external device may be charged through the auxiliary device-side charging coil 271. At this time, the first wireless charging circuit 193a connects the terminal-side charging coil 195 and the power supply unit 190, and the second wireless charging circuit 193b is the auxiliary device-side charging coil 271 and the power supply unit 190 Connect.

It is obvious from the standpoint of a person skilled in the art that other features can be applied within a range that does not contradict the features described in FIG. 5.

Below, several embodiments that can be implemented through the above configuration are shown.

[Example 1]

7 is an embodiment of a terminal set 10 related to the present invention.

The auxiliary device-side charging coil 271 may be provided outside the foldable cover 260 to form a charging region 2711 on the outer surface 2601 of the foldable cover 260. In the present invention, the charging region refers to a region within an effective magnetic field range that can be charged by being formed by driving a charging coil that performs a Tx operation. Here, the outer or outer surface refers to a direction in which the foldable cover 260 is exposed when the foldable cover 260 is completely closed in the terminal set 10 or a surface exposed from the foldable cover 260 And the inner side or inner side is the same as the opposite. These definitions are valid throughout this specification.

Referring to FIG. 7(a), the auxiliary device-side charging coil 271 provided on the outer surface 2601 of the foldable cover 260 operates as a Tx and is in the power supply unit 190 of the mobile terminal 100. Power can be sent to the external device 20. The user can charge the external device 20 while the terminal set 10 is not turned over and placed on the bottom surface 30 and the foldable cover 260 is covered.

Referring to FIG. 7(b), in the case of charging the mobile terminal 100 without charging the external device 20, the terminal-side charging coil 195 provided on the rear side of the mobile terminal 100 100) A charging area is formed on the rear surface 1002, and the terminal set 10 operates as Rx so that the external charger 40 charges the power supply unit 190 of the mobile terminal 100 and opens the foldable cover 260 It goes without saying that a multi-display can be used through the second display 261 provided on the inner side of the foldable cover 260 and the first display 151 of the mobile terminal 100.

[Example 2]

8 is another embodiment of a terminal set 10 related to the present invention. 8(a) shows a state in which the charging area of the foldable cover 260 faces the outside of the terminal set 10, and FIG. 8(b) shows the foldable cover 260 in FIG. 8(b). ), FIG. 8(c) shows a state in which the charging area of the foldable cover 260 faces the inside of the terminal set 10.

In another embodiment of the terminal set 10 of the present invention, the foldable cover 260 includes a second display that forms an output area on one side, and an auxiliary device-side charging coil forms a charging area on the other side. I can. In addition, the foldable cover 260 is separated from the terminal case 210 and can be selectively attached and detached, and the detachable foldable cover 260 is forwardly coupled so that the charging area faces the outside of the terminal set (Fig. 8(a)). Or, it can be reverse-coupled to face the inside of the terminal set (Fig. 8(c)).

[Example 2-1]

When the foldable cover 260 is coupled to the terminal case 210 in the forward direction as shown in FIG. 8A, it has the same usability as the first embodiment. On the other hand, when the foldable cover 260 is coupled to the terminal case 210 in the reverse direction as shown in FIG. 8(c), the terminal set 10 operates as Tx to charge the external device through the foldable cover 260. At the same time, the first display 151 of the mobile terminal 100 can be checked.

[Example 2-2]

FIG. 9 illustrates an embodiment of a terminal set 10 in a state in which the foldable cover 260 is opened 360 degrees in the state of FIG. 8(c).

On the other hand, when a circuit is configured so that the auxiliary device-side charging coil 271 can perform Rx operation, if the foldable cover 260 coupled in the reverse direction is opened 360 degrees, the foldable cover instead of the terminal-side charging coil of the mobile terminal 100 The auxiliary device-side charging coil 271 of 260 may charge the power supply of the mobile terminal 100. Therefore, in this case, even when the mobile terminal 100 does not have a charging coil, there is an effect that the power supply of the mobile terminal 100 can be charged.

10 is a conceptual diagram of an embodiment of a terminal set 10 related to the present invention. 6 and 8 are referred to together for better understanding.

The auxiliary device-side charging coil 271 is connected to the circuit part of the mobile terminal 100 through the circuit 2102 (refer to FIG. 5) of the terminal case 210, and finally to the power supply unit 190 of the mobile terminal 100. .

In order to enable the foldable cover 260 to be coupled in both directions as in the embodiment of FIG. 8, and in both cases, the auxiliary device-side charging coil 271 can be used, regardless of the coupling direction of the foldable cover 260. Electrical connection with the circuit 2102 of 210 (see FIG. 5) should be maintained.

In this embodiment, even when the foldable cover 260 is coupled in both directions, the respective terminals (the foldable cover side coil terminal pair 2609 and the terminal case side coil terminal pair 2109 are located on the coupling symmetry axis C where the same point is located). )) can be located. At this time, since the charging coil 271 is composed of an AC circuit, it does not matter even if the terminal pair is changed.

Meanwhile, in order to maintain the coupling force and guide the coupling, the foldable cover 260 and the terminal case 210 may be provided with

magnetic portions

2108 and 2608 at corresponding positions, respectively, on both sides so as to be symmetrical to the coupling symmetry axis C. Each is provided so that it can always generate manpower when coupled in both directions.

11 is a conceptual diagram of another embodiment of a terminal set 10 related to the present invention.

Unlike FIG. 10, when the foldable cover-side coil terminal pair 2609 is not located on the coupling symmetry axis C, the terminal case-side coil terminal pair 2109 corresponds to two possible positions where the foldable cover-side coil terminal pair can be placed. It may be provided as (2109a, 2019b).

Referring back to FIG. 10, the foldable cover side display terminal 2607 connected from the second display 261 of the foldable cover 260 and exposed to the foldable cover 260 is located at a point other than the axis of coupling symmetry C. The display terminal 2107 on the terminal case side may be provided only at a point corresponding to the display terminal 2607 on the foldable cover side to be connected only when the foldable cover 260 is coupled in the forward direction. This is to minimize standby power consumption based on the fact that the second display 261 is not used when the foldable cover 260 is reversely coupled.

12 is a conceptual diagram of an embodiment of a terminal set 10 related to the present invention.

Even when the foldable cover 260 is not detachable from the terminal case 210, the charging coil may be provided inside the foldable cover 260 to form a charging area 2711 on the inner side 2602. In this case, when the foldable cover 260 is opened 180 degrees, the external device is charged from the inner surface, and when the foldable cover 260 is opened 360 degrees, the power of the mobile terminal 100 is provided through the charging coil 271 on the auxiliary device side. The supply unit 190 may be charged.

It is apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit and essential features of the present invention.

The above detailed description should not be construed as restrictive in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

The above-described features may be partially or wholly applied to the mobile terminal related to the present invention and an auxiliary device coupled thereto.

Claims

A terminal case forming a seating area of the mobile terminal;

A foldable cover rotatably coupled to one edge of the terminal case to selectively cover the seating area; And

A charging coil provided on the foldable cover to form a charging area on either side of the inside or outside of the foldable cover,

The auxiliary device-side charging coil is connected to the power supply unit of the mobile terminal through the circuit of the terminal case.
The method of claim 1,

Further comprising a second display forming an output area on the inner side of the foldable cover,

The auxiliary device-side charging coil forms a charging area on an outer surface of the foldable cover.
The method of claim 1,

The auxiliary device-side charging coil forms a charging region for Tx operation on an inner surface of the foldable cover.
The method of claim 1,

Further comprising a second display forming an output area on one side of the foldable cover,

The auxiliary device-side charging coil forms a charging area on the other side of the foldable cover,

The foldable cover is detachable from the terminal case, and the charging area is forwardly coupled to face the outside or reversely coupled to face the inside.
The method of claim 4,

Further comprising a foldable cover-side coil terminal pair and a terminal case-side coil terminal pair for connecting the auxiliary device-side charging coil to the power supply by mutual contact when the foldable cover is coupled to the terminal case,

The pair of coil terminals on the foldable cover side is provided on a coupling symmetry axis that can be positioned at the same point when the foldable cover is coupled in the forward direction or the reverse direction.
The method of claim 5,

The auxiliary device further comprises a foldable display terminal and a terminal case side display terminal for connecting the second display to the power supply unit by contacting each other when the foldable cover is positively coupled to the terminal case.
The method of claim 1,

A wireless charging circuit for switching the AC current of the auxiliary device-side charging coil and the DC current of the power supply unit to each other; And

An auxiliary device further comprising an antenna switch provided between the wireless charging circuit and the auxiliary device-side charging coil to selectively connect the auxiliary device-side charging coil or the charging coil provided in the mobile terminal.