KR101470544B1 - mobile terminal - Google Patents

Abstract

The present invention relates to a portable terminal. The present portable terminal includes a patch formed of at least one conductive film having a predetermined pattern. When the portable terminal body is hand gripped, a flow of surface waves formed in an electromagnetic field around the antenna formed inside the portable terminal body . According to the present invention, the flow of surface waves formed around the antenna when the hand grip is applied to the main body of the mobile terminal is interrupted, thereby reducing the hand effect caused by the hand grip and improving the efficiency of the antenna. Further, there is an advantage that it is easy to change the frequency band of the applied signal by changing a predetermined pattern formed on the conductive film.

Portable terminal, antenna, patch, conductive film, band gap, surface current

Description

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable terminal, and more particularly, to a portable terminal that controls the flow of a surface wave formed around an antenna when the portable terminal is held by a handgrip.

A portable terminal is a portable device having one or more functions capable of carrying out voice and video communication, capable of inputting and outputting information, and storing data, while being portable. As the functions of the portable terminal have diversified, they have complicated functions such as photographing and photographing of a movie, playback of a music file or a video file, reception of a game, reception of broadcasting, wireless Internet, etc., and a comprehensive multimedia device .

In order to implement a complex function in a portable terminal implemented in the form of multimedia devices, various attempts have been made in terms of hardware and software. For example, there is a user interface environment in which a user can easily and conveniently search for or select a function. In addition, the portable terminal is regarded as a personal portable product for expressing the personality of the user, and various kinds of design changes are also required.

In recent years, efforts have been made to develop a technique for improving antenna performance by transmitting / receiving a large amount of data through a portable terminal or receiving and outputting a broadcast signal. In addition to improving antenna performance, Methods are also being studied.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a portable terminal that improves the efficiency of an antenna by interrupting the flow of surface waves formed around the antenna when the portable terminal is hand-gripped.

According to an aspect of the present invention, there is provided a portable terminal including a main body of a portable terminal, an antenna formed in the main body of the portable terminal, and at least one conductive film having a predetermined pattern, and a patch for interrupting the flow of the surface current formed in the electromagnetic field region around the antenna when the antenna is gripped.

The patch is formed by attaching at least two of the conductive films to one another, wherein the patterns formed on the at least two conductive films are attached to each other so as to be spaced apart from each other. The at least two conductive films may have different patterns.

According to the present invention, the flow of surface waves formed around the antenna when the hand grip is applied to the body of the mobile terminal is interrupted, thereby reducing the hand effect due to the hand grip and improving the efficiency of the antenna. Further, there is an advantage that it is easy to change the frequency band of the applied signal by changing a predetermined pattern formed on the conductive film.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The portable terminal described in this specification includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation.

FIG. 1 is a block diagram of a portable terminal according to an exemplary embodiment of the present invention. Referring to FIG. Referring to FIG. 1, a mobile terminal according to an exemplary embodiment of the present invention will be described in terms of its functional components.

1, the portable terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A memory 160, an interface unit 170, a control unit 180, and a power supply unit 190. When such components are implemented in practical applications, two or more components may be combined into one component, or one component may be divided into two or more components as necessary.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

The broadcast receiving module 111 receives at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. At this time, the broadcast channel may include a satellite channel, a terrestrial channel, and the like. The broadcast management server may refer to a server for generating and transmitting at least one of a broadcast signal and broadcast related information and a server for receiving at least one of the generated broadcast signal and broadcast related information and transmitting the broadcast signal to the terminal.

The broadcast-related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal. The broadcast-related information can also be provided through a mobile communication network, in which case it can be received by the mobile communication module 113. Broadcast-related information can exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems. In particular, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) ), Digital Video Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. In addition, the broadcast receiving module 111 may be configured to be suitable for all broadcasting systems that provide broadcasting signals, as well as the digital broadcasting system. The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 113 transmits and receives a radio signal to at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to a voice call signal, a video call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 can be embedded in the mobile terminal 100 or externally. The short-range communication module 117 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short range communication technology. A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

The A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 123. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. Then, the processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 123 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 113 and output when the voice data is in the call mode. The microphone 123 may use various noise elimination algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 130 generates key input data that the user inputs to control the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (static / static), a jog wheel, a jog switch, a finger mouse, and the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151 described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, Thereby generating a sensing signal. For example, when the portable terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, a sensing function related to whether or not the power supply unit 190 is powered on, whether the interface unit 170 is coupled to an external device, and the like can be handled.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, and an alarm unit 155.

The display unit 151 displays and outputs the information processed by the portable terminal 100. For example, when the portable terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the portable terminal 100 is in the video communication mode or the photographing mode, the photographed or received images can be displayed individually or simultaneously, and the UI and the GUI are displayed.

Meanwhile, as described above, when the display unit 151 and the touch pad have a mutual layer structure to constitute a touch screen, the display unit 151 can be used as an input device in addition to the output device. If the display unit 151 is configured as a touch screen, it may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside, and can be connected to a bus inside the portable terminal. The touch screen panel keeps a watch on the contact result, and if there is a touch input, sends the corresponding signals to the touch screen panel controller. The touch screen panel controller processes the signals, and then transmits corresponding data to the controller 180 so that the controller 180 can determine whether the touch input has been made and which area of the touch screen has been touched.

The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, And a display (3D display). In addition, there may be two or more display units 151 according to the embodiment of the portable terminal 100. For example, the portable terminal 100 may include an external display unit (not shown) and an internal display unit (not shown) at the same time.

The audio output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 153 outputs sound signals related to functions performed in the portable terminal 100, for example, a call signal reception tone, a message reception tone, and the like. The sound output module 153 may include a speaker, a buzzer, and the like.

The alarm unit 155 outputs a signal for notifying the occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal 100 include call signal reception, message reception, and key signal input. The alarm unit 155 outputs a signal for notifying the occurrence of an event in a form other than an audio signal or a video signal. For example, it is possible to output a signal in a vibration mode. When a call signal is received or a message is received, the alarm unit 155 may output a vibration to notify it. Alternatively, when the key signal is input, the alarm unit 155 can output the vibration by the feedback to the key signal input. This vibration output allows the user to recognize the occurrence of an event. Of course, a signal for an event occurrence notification can also be output through the display unit 151 or the sound output module 153. [

The memory 160 may store a program for processing and controlling the control unit 180 and may store a function for temporarily storing input or output data (e.g., a phone book, a message, a still image, .

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM , And a ROM. ≪ / RTI > In addition, the portable terminal 100 may operate a web storage for storing the memory 150 on the Internet.

The interface unit 170 serves as an interface with all external devices connected to the portable terminal 100. Examples of the external device connected to the portable terminal 100 include a card socket such as a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a SIM / UIM card, / Output, Video I / O, and Earphone. The interface unit 170 receives data from the external device or receives power from the external device and transmits the data to each component in the portable terminal 100 so that data in the portable terminal 100 can be transmitted to the external device .

The controller 180 typically controls the operation of the respective units to control the overall operation of the mobile terminal 100. For example, voice communication, data communication, video communication, and the like. In addition, the control unit 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or separately from software in the controller 180. [

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The portable terminal according to the present invention has been described in terms of components according to functions. Hereinafter, with reference to FIG. 2 and FIG. 3, the portable terminal related to the present invention will be described in more detail from the viewpoint of the components according to the external form. Hereinafter, a slider type portable terminal having a front touch screen and a slider type keypad among various types of portable terminals such as a folder type, a bar type, a swing type, a slider type, . However, the present invention is not limited to a slider type portable terminal, but can be applied to all types of portable terminals including the above-mentioned type.

2 is a perspective view of a portable terminal according to an embodiment of the present invention. Referring to FIG. 2, the portable terminal includes a first body 100A and a second body 100B configured to be slidable along at least one direction on the first body 100A. The first body 100A and the second body 100B are collectively referred to as a body.

The first body 100A may be referred to as a closed configuration in which the first body 100A is disposed so as to overlap the second body 100B and the first body 100A may be referred to as a second body 100B, 100B may be referred to as an open configuration.

While the portable terminal 100 is in the closed state, it operates mainly in the standby mode, but the standby mode is also canceled by the user's operation. While the portable terminal 100 is open, it operates mainly in a communication mode, but it is also switched to a standby mode by a user's operation or a predetermined period of time.

The case constituting the outer appearance of the first body 100A is formed by the first front case 100A-1 and the first rear case 100A-2. Various electronic components are embedded in the space formed by the first front case 100A-1 and the first rear case 100A-2. At least one intermediate case may be additionally disposed between the first front case 100A-1 and the first rear case 100A-2. Such cases may be formed by injection molding of a synthetic resin, or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the first sound output module 153a, and the first camera 121a may be disposed in the first body 100A, specifically, the first front case 100A-1.

The display unit 151 includes a liquid crystal display (LCD), an OLED (Organic Light Emitting Diodes), and the like that visually express information. The touch pad may be superimposed on the display unit 151 in a layer structure so that the display unit 151 may operate as a touch screen so that information can be input by a user's touch.

The first acoustic output module 153a may be implemented in the form of a receiver or a speaker. The first camera 121a may be adapted to photograph an image or a moving image of a user or the like.

The case constituting the appearance of the second body 100B is formed by the second front case 100B-1 and the second rear case 100B-2. The first operation unit 130a may be disposed on the front face of the second body 100B, specifically, the second front case 100B-1. The second user input unit 130c, the microphone 123 and the interface unit 170 may be disposed on at least one of the first front case 100B-1 and the second rear case 100B-2.

The first user input unit 130a receives a command for controlling the operation of the portable terminal. The first user input unit 130a may include an input key having a function corresponding to a mouse function such as a joystick key, a touch pad, a track ball, a pointing stick, a finger mouse, and the like.

The first and second user input units 130a and 130c may be collectively referred to as a manipulating portion 130 and any method may be adopted if the user operates in a tactile manner with a tactile impression have. For example, the user input unit 130 may be implemented as a dome switch or a touch pad capable of receiving a command or information by a push or a touch operation of a user, or may be a wheel, a jog type, Method or the like.

In terms of functionality, the first user input 130a is for entering commands, numbers, letters, symbols, etc., such as start, end, scroll, and the like. Also, the second user input unit 130c may operate as a hot-key for activating a special function in the portable terminal.

The microphone 123 may be implemented in a form suitable for receiving voice, sound, etc. of the user. The interface unit 170 enables the portable terminal according to the present invention to exchange data with an external device. For example, the interface unit 170 may be at least one of a connection terminal for connecting to an earphone, a port for short-range communication, or power supply terminals for supplying power to the portable terminal 100, have. The interface unit 170 may be a card socket that accommodates an external card such as a user authentication module such as a subscriber identification module (SIM) or a user identity module (UIM), or a memory card for information storage.

A power supply unit 190 for supplying power to the portable terminal is mounted on the second rear case 100B-2. The power supply unit 190 may be a rechargeable battery, for example, and may be detachably coupled to the second body 100B for charging or the like.

3 is a rear perspective view of the portable terminal shown in FIG. Referring to FIG. 3, a second camera 121b may be further mounted on the rear surface of the second rear case 100B-2 of the second body 100B. The second camera 121b has a photographing direction substantially opposite to that of the first camera 121a, and may have pixels different from those of the first camera 121a.

For example, the first camera 121a has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and transmit the face to the other party, and the second camera 121b shoots a general subject It is preferable to have a high pixel because it is often not transmitted.

A third user input unit 130d may be additionally mounted on the rear surface of the second rear case 100B-2 of the second body 100B. The third user input unit 130d may be implemented with a wheel, and may operate as a special function key such as a scroll in the portable terminal.

A flash 125 may be further disposed adjacent to the second camera 121b. The flash 125 illuminates the subject when the subject is photographed by the second camera 121b.

On one side of the second rear case 100B-2, a broadcast signal receiving antenna 105 may be disposed in addition to an antenna for communication. The antenna 105 may be installed to be able to be drawn out from the second body 100B. A part of the slide module 100C that slidably connects the first body 100A and the second body 100B is disposed on the first rear case 100A-2 side of the first body 100A. The other part of the slide module 100C may be disposed on the second front case 100B-1 side of the second body 100B and may not be exposed to the outside as shown in Fig.

In addition, a fourth user input unit 130e serving as a selection or confirmation key for a specific function may be disposed on one side of the second rear case 100B-2. The fourth user input unit 130e may operate as a hot-key for activating a special function in the portable terminal.

In the above description, the second camera 121b and the like are disposed on the second body 100B, but the present invention is not limited thereto. At least one of the structures 105, 121b, and 125 described as being arranged in the second rear case 100B-2, such as the second camera 121b, is a first body 100A, 1 rear case 100A-2. In such a configuration, there is an advantage that the structures disposed in the first rear case 100A-2 in the closed state are protected by the second body 100B. Also, the first camera 121a may be rotatably formed so that the second camera 121b can be photographed up to the photographing direction, even if the second camera 121b is not separately provided.

4 to 10 are views for explaining the configuration of a mobile terminal according to an embodiment of the present invention.

4 (a) and 4 (b) illustrate a general form in which a patch is attached to a portable terminal, and FIG. 4 (b) A perspective view of a form attached to a terminal.

4, the portable terminal 100 according to the present invention is formed of at least one conductive film having a predetermined pattern, and includes at least one of the first and second bodies 100A and 100B of the portable terminal 100, And a patch 200 for blocking the flow of surface waves formed in the electromagnetic field around the antenna 105 provided inside the body of the portable terminal 100 when the hand grip is handled.

Here, the patch 200 may be formed of any one conductive film having a predetermined pattern, and one side of at least two conductive films may be attached to each other. At least two conductive films may be formed in different patterns, and at least two conductive films having different patterns may be attached to form a new pattern.

The conductive film is a compression type film, and the patch 200 formed by attaching one or more conductive films is slimly formed, and preferably has a thickness of 0.1 mm or less. The patch 200 formed as described above is formed as an attachment type and is attached to the inside or the outside of the body of the portable terminal 100. It is also possible to change the attachment position of the patch 200 according to the performance of the antenna 105 of the portable terminal 100 by detachably attaching. At this time, the patch 200 may be attached to one side of the body of the portable terminal 100, but may be attached to two sides, three sides, or the entire sides depending on the attachment type.

On the other hand, the predetermined pattern formed on the conductive film is formed by arranging at least two or more triplets at regular intervals, and band gaps are formed between the respective triplets because at least two or more triplets are arranged at regular intervals . At this time, when the body of the portable terminal 100 is hand-gripped by the formed band gap, the flow of the surface current formed in the electromagnetic field region around the antenna 105 is blocked to block the flow of surface waves formed by the surface current do. Accordingly, the patch 200 is provided in a predetermined area from the antenna 105, and interrupts the signal interference of the antenna 105 when the body of the portable terminal 100 is hand-gripped.

5 to 7 show the configuration of a patch according to an embodiment of the present invention.

5 shows the basic configuration of the patch, and it can be seen that one side of the two conductive films F1 and F2 is formed by adhering to one another. Of course, as described above, the patch 200 may be formed of one conductive film, or at least two conductive films may be formed by adhering one side of the conductive film to each other. In this embodiment, one side of the two conductive films is formed As an example.

FIG. 6 shows a process of forming the patch shown in FIG. 5. FIG. 6 (a) shows the first conductive film F1 provided on the upper surface of the patch in FIG. 5, ) Shows the second conductive film F2 positioned at the lower end of the first conductive film F1 in FIG.

In this case, the first conductive film F1 shown in FIG. 6A has a predetermined pattern as the three-poles of the same shape have a predetermined interval and are arranged in a constant shape. Meanwhile, the second conductive film F2 of FIG. 6 (b) has a shape in which the three poles arranged on the first conductive film F1 are rotated at a predetermined angle, As shown in FIG. Therefore, it can be seen that the patterns formed on the first conductive film F1 and the second conductive film F2 have different patterns.

6C shows a process of attaching one side of the first conductive film F1 and the second conductive film F2 shown in FIGS. 6A and 6B to each other. At this time, the first conductive film F1 and the second conductive film F2 interact with each other as the patterns formed on the respective conductive films are adhered to each other. Here, the configuration of the triode structure arranged in each conductive film is described with reference to the description of the embodiment of Figs. 7A and 7B.

At this time, the pattern formed on the conductive film is formed by arranging at least one tripole by a specific method. In this case, the pattern formed on the conductive film may be formed of the same type of triangular pole. Of course, it may also be a tri-polar character having at least two or more different forms.

Also, at least two or more conductive films have different patterns by differently arranging the triode arrangement. At this time, each conductive film may be patterned by different arrangements of triplets of the same type, and another pattern may be formed by changing the shapes of the triplets arranged.

At this time, the patch 200 is formed by attaching at least two conductive films having different patterns to each other, so that the patterns formed on the at least two conductive films are mutually combined to form another pattern.

FIGS. 7A and 7B show a structure of a triple pole pattern forming a pattern of a patch according to an embodiment of the present invention. FIG. 7A shows one triode pole. FIG. Spaced apart from each other.

As shown in Fig. 7A, one triplet is made up of three dipoles. Here, the dipole has a predetermined width (W) and a predetermined length (L). In this case, the triple pole has three dipoles connected at one end thereof and arranged in a horizontal direction at an angle of 120 degrees.

On the other hand, the triode has four shapes rotated by 30 degrees in the horizontal direction. That is, it has a shape that is rotated at a 30 degree angle in a certain direction, a shape rotated at a 60 degree angle in the same direction, and a shape rotated at an angle of 90 degrees in the same direction with respect to any one triangular pole.

At this time, the triplet formed on the first conductive film F1 of the patch 200 and the triplet formed on the second conductive film F2 may have the same shape or not be located at the same position. On the other hand, even if they have the same shape, they are arranged differently from each other, or any one of the triangles rotated by 30 degrees, 60 degrees, or 90 degrees in a certain direction is selected and arranged. The shape of the triode formed on each conductive film may be arranged to have a constant arrangement, but may not have a constant arrangement according to the embodiment.

FIG. 7B shows a pattern in which the triple poles of FIG. 7A are arranged at a predetermined interval, in which patterns formed on the first conductive film F1 and the second conductive film F2 are overlapped with each other. 7B, the pattern formed on the first conductive film F1 and the pattern formed on the second conductive film F2 are formed in different shapes of triodes. In FIG. 7B, the first conductive film F1 And the triplet formed in the first conductive film F1 and the triplet formed in the second conductive film F2 are rotated at an angle of 60 degrees.

The first conductive film F1 and the second conductive film F2 are attached to the conductive film F1 so that the first conductive film F1 and the second conductive film F2 overlap each other, And a triangular pole of the second conductive film F2 overlap each other to form a hexagonal pattern. Of course, it is to be understood that the embodiment of FIG. 7B may not be a perfect overlapping shape as shown in FIG. 7B as an example.

The patch 200 has a predetermined band gap according to the shape of the pattern formed on the at least one conductive film. That is, each triode is formed of at least one capacitor C and a coil L, and a predetermined band gap is formed by the coil L and the capacitor C. Here, the band gap is a kind of magnetic stripe, and serves to cut off current flowing in a predetermined direction. In other words, the bandgap functions to block the surface current formed on the portable terminal 100 from flowing toward the antenna 105 when the portable terminal 100 is hand-gripped, so that the surface wave formed by the surface current It can be prevented from being formed around the antenna 105.

At this time, in a preferred embodiment, the pattern formed on the conductive film is formed so that at least one value of the dielectric constant (epsilon) and the magnetic permeability (mu) of the band gap has a negative value depending on the arrangement position of at least one capacitor and the coil .

8 and 10 illustrate the operation of the patch according to an embodiment of the present invention, and a description will be given of an example in which the portable terminal body is hand gripped.

First, FIG. 8 shows a wavelength change around the antenna when the body of the portable terminal 100 is hand-gripped. 8 (a) shows the flow of a radio wave around the antenna of the portable terminal 100 when the patch according to the present invention is not attached, and FIG. 8 (b) The flow of the radio wave formed around the antenna of the portable terminal is shown.

8 (a), when the body of the portable terminal 100 is hand-gripped, a surface wave is formed by the surface current flowing at the point P where the body of the portable terminal 100 is hand-gripped. At this time, It can be seen that the surface wave around the antenna 105 is expanded to the point where the surface wave is hand-gripped by the formed surface wave.

8 (b) shows an embodiment in which a patch is attached to the portable terminal body. In particular, FIG. 8 (b) shows a case where a patch is attached between an antenna and a hand gripped point. In this case, as the body of the portable terminal 100 is hand-gripped, the patch 200 blocks the flow of the surface current formed at the hand gripped point P, thereby preventing surface waves from being formed. Therefore, even if the body of the portable terminal 100 is hand-gripped, the performance of the antenna 105 is increased by preventing the wavelength change around the antenna 105 from being caused.

FIG. 9 shows a frequency change of a signal transmitted / received through the antenna when the portable terminal body is hand-gripped. 9 (a) shows an embodiment in which a patch according to the present invention is not attached, and FIG. 9 (b) shows an embodiment in the case where a patch according to the present invention is attached.

9 (a), when the patch 200 is not attached to the body of the portable terminal 100, when the body of the portable terminal 100 is hand-gripped, the antenna 105 It can be seen that the frequency band of the signal transmitted and received through the antenna 105 is changed. In this case, as the frequency range of a signal transmitted / received through the antenna 105 is changed, the signal transmission / reception ratio of the antenna 105 is lowered.

9 (b), when the patch 200 is attached to the body of the portable terminal 100, when the body of the portable terminal 100 is hand-gripped, the patch 200, as shown in FIG. 8 (b) It is possible to prevent the wavelength around the antenna 105 from being enlarged by blocking the flow of the surface current formed by the hand grip so that the frequency of the signal transmitted and received through the antenna 105 can be reduced even when the body of the portable terminal 100 is hand- It can be confirmed that the ranges are the same. At this time, the frequency band of signals transmitted and received through the antenna 105 can be enlarged.

10 is a graph illustrating a result of measuring a response status of a mobile terminal with a patch according to an exemplary embodiment of the present invention. As shown in FIG. 10, it can be seen that the patch 200 according to an embodiment of the present invention reacts in a frequency band of a specific region and does not react in the other region. Of course, it is natural that the specific frequency band can be changed according to the setting.

Accordingly, in the case of the portable terminal with the patch according to the present invention, the efficiency of the antenna can be increased when transmitting / receiving signals of a specific frequency band through the embodiments of FIGS.

As described above, the portable terminal according to the present invention is not limited to the configuration and method of the embodiments described above, but the embodiments may be modified so that all or some of the embodiments may be modified Or may be selectively combined.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the present invention.

1 is a block diagram of a portable terminal according to an embodiment of the present invention;

2 is a front perspective view of a mobile terminal according to an embodiment of the present invention,

3 is a rear perspective view of a portable terminal according to an embodiment of the present invention, and FIG.

4 to 10 are views for explaining the configuration of a mobile terminal according to an embodiment of the present invention.

Description of the Related Art [0002]

110: wireless communication unit 120: A / V input unit

130: user input unit 140: sensing unit

150: output unit 160: memory

170: interface unit 180: control unit

Claims (13)

body; An antenna formed inside the body; And And a patch formed of at least one conductive film having a predetermined pattern and blocking a flow of a surface wave formed in an electromagnetic field area around the antenna when the body is hand gripped, Mobile terminal. The method according to claim 1, Wherein the patch is formed by attaching at least two surfaces of the conductive film to one another. 3. The method of claim 2, Wherein the patch is attached such that patterns formed on the at least two conductive films are spaced apart from each other. 3. The method of claim 2, Wherein the at least two conductive films have different patterns. The method according to claim 1, Wherein the patch is formed to have a thickness of 1 mm or less. The method according to claim 1, Wherein the conductive film is a compression film. The method according to claim 1, Wherein the predetermined pattern formed on the conductive film is formed by arranging at least two tripoles at regular intervals. 8. The method of claim 7, Wherein the triode is composed of three dipoles and one end of each of the three dipoles is connected to one end and is arranged at an angle of 120 degrees in the horizontal direction. 8. The method of claim 7, Wherein the triode is formed of at least one coil (L) and a capacitor (C). The method according to claim 1, Wherein the patch shields a flow of a surface wave formed in an electromagnetic field region around the antenna by a band gap formed by the predetermined pattern. 11. The method according to claim 9 or 10, The predetermined pattern formed on the conductive film may be formed such that at least one value of the dielectric constant epsilon and the magnetic permeability mu of the bandgap is set to a negative value depending on the arrangement position of the coil L and the capacitor C. [ The portable terminal according to claim 1, The method according to claim 1, Wherein the patch is provided inside or outside the body. The method according to claim 1, Wherein the patch is formed as an attachment type.

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