KR101919784B1 - Mobile Terminal - Google Patents

Abstract

A case which forms an outer appearance of the mobile terminal; a printed circuit board which is located inside the case and in which a plurality of electronic elements are mounted on the surface; and one surface and the other surface of the printed circuit board are covered. The shield can includes a plurality of fastening grooves on the right and left side walls and a plurality of fastening protrusions that engage with the fastening grooves in a male and female manner by a pair of shielding cans including a top surface and side walls extending from the top surface The shield can is fixed by a male and female coupling method using a coupling groove formed on the left and right side walls of the shield can and a fastening projection so that all four sides are fixed by the clip, The space can be reduced, and the space for mounting the element on the printed circuit board can be ensured.

Description

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile terminal having a shield can shielding noise, and a mobile terminal in which a space necessary for coupling a shield can with a printed circuit board is minimized.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to perform various functions as described above, the number of components of the portable terminal is increasing, and the signals and noise components generated from the components act as noise to other parts of the circuit. In recent years, A shield can is installed to block the backlight.

In order to couple the shield can to the printed circuit board, a clip is provided on the printed circuit board, and a wall surface of the shield can is inserted into the clip. However, There is a problem that a space is not enough for forming a circuit or for mounting the element in the semiconductor device.

The present invention relates to a mobile terminal that improves the structure of a shield can to minimize the space required for coupling a shield can shielding noise to a printed circuit board.

According to an aspect of the present invention, there is provided a mobile terminal comprising: a case which forms an outer appearance of a mobile terminal; a printed circuit board which is disposed inside the case and has a plurality of electronic elements mounted on a surface thereof; . The shield can includes a plurality of fastening grooves on the right and left side walls and a plurality of fastening protrusions that engage with the fastening grooves in a male and female manner by a pair of shielding cans including a top surface and side walls extending from the top surface And a mobile terminal.

The shield can further include a clip formed on the upper and lower surfaces of the printed circuit board. The upper and lower walls of the shield can can be inserted into the clip and coupled with the printed circuit board.

The pair of shield can includes a first shield can which covers one surface of the printed circuit board and has right and left side walls in contact with the printed circuit board; And a second shield can cover the other surface of the printed circuit board and contact the outside of the left and right sidewalls of the first shield can.

At this time, the left and right sidewalls of the first shield can can be formed so that the inner side thereof is in contact with one surface of the printed circuit board and the end thereof is in contact with the upper surface of the second shield can.

The first shield can further includes a plurality of first support protrusions protruding inward from edges of the upper surface and the right and left side walls, and the support tucks support the printed circuit board in contact with one surface of the printed circuit board.

And the end portions of the left and right sidewalls of the first shield can contact the one surface of the printed circuit board.

The printed circuit board may further include a plurality of fixing walls formed at left and right ends thereof and extending from left and right sidewalls of the first shield can and an end thereof contacting the upper surface of the second shield can, The fixing wall is inserted into the incision groove.

Alternatively, the second shield can may further include a plurality of second support protrusions protruding inward from edges of the upper surface and the left and right sidewalls, and the second support protrusions may contact the other surface of the printed circuit board, .

Alternatively, the printed circuit board may have a plurality of cutout grooves formed at left and right ends thereof, a plurality of fixing walls extending from the left and right sidewalls of the first shield can and inserted into the cutout recesses, And the second shield can further includes a plurality of second support protrusions protruding inward from the edges of the upper surface and the left and right sidewalls to support the other surface of the printed circuit board, The plurality of second supporting jaws are formed to be pitted.

Effects of the mobile terminal and the control method according to the present invention will be described as follows.

According to at least one of the embodiments of the present invention, the shield can is fixed by the male and female coupling methods using the fastening protrusions formed on the right and left side walls of the shield can, It is possible to secure a space for mounting the element on the printed circuit board.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

1 is a block diagram of a mobile 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 mobile terminal according to an embodiment of the present invention.
4 is a perspective view illustrating a back cover of a mobile terminal according to an embodiment of the present invention.
5 is a perspective view showing a shield can and a printed circuit board of a mobile terminal according to an embodiment of the present invention.
6 to 8 are cross-sectional views illustrating a shield can and a printed circuit board of a mobile terminal according to an embodiment of the present invention.
9 is a perspective view showing a shield can and a printed circuit board of a mobile terminal according to another embodiment of the present invention.
10 and 11 are cross-sectional views illustrating a shield can and a printed circuit board of a mobile terminal according to another embodiment of the present invention.
12 is a perspective view showing a shield can and a printed circuit board of a mobile terminal according to another embodiment of the present invention.
13 and 14 are cross-sectional views illustrating a shield can and a printed circuit board of a mobile terminal according to another embodiment of the present invention.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix " module " and " part " for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving 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 broadcast receiving module 111 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. Two or more broadcast receiving modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching for at least two broadcast channels.

The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. 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 means information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may 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).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (Mobile Broadcasting Business Management System), ISDB-T (Integrated Services Digital Broadcasting (ISDB-T)), Digital Multimedia Broadcasting (MBMS) Digital Broadcast-Terrestrial) or the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

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 112 may be coupled to a base station, an external terminal, or a server on a mobile communication network, such as, but not limited to, Gobal System for Mobile communications (GSM), Code Division Multiple Access (CDMA), Wideband CDMA Transmits and receives wireless signals with one. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. Wireless Internet technologies include WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), GSM, CDMA, WCDMA, LTE Evolution (but not limited to) may be used.

The wireless Internet module 113, which performs wireless Internet access through the mobile communication network, is connected to the mobile communication module 110 through the mobile communication network, for example, from the viewpoint that the wireless Internet access by Wibro, HSDPA, GSM, CDMA, WCDMA, LTE, (112). ≪ / RTI >

The short-range communication module 114 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 a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module. According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites, and then applies trigonometry to the calculated information to obtain a three-dimensional string of latitude, longitude, The location information can be accurately calculated. At present, a method of calculating position and time information using three satellites and correcting an error of the calculated position and time information using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time.

Referring to FIG. 1, an 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 122. 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. 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. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through 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 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a button 136 located on the front, rear, or side of the mobile terminal 100, and a touch sensor (static / static) 137. Although not shown, ), A dome switch, a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor 141. (The proximity sensor will be described later).

The output unit 150 is for generating output related to the visual, auditory or tactile sense and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154 .

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

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

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

In the case where the display unit 151 and the touch sensor 137 have a mutual layer structure or are integrally formed (hereinafter referred to as a 'touch screen'), the display unit 151 may be used as an input device . The touch sensor may be stacked on the display unit 151 to form a layer structure when the touch sensor has a form of a touch film, a touch sheet, a touch pad, or the like. ≪ / RTI >

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller (not shown). The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

The proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as " proximity touch " The act of actually contacting the pointer on the touch screen may be referred to as " contact touch. &Quot; The location where the pointer is proximately touched on the touch screen may refer to a position where the pointer corresponds vertically to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The audio output module 152 may output 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 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. In this case, the display unit 151 and the sound / voice output module 152 may be a kind of the alarm unit 153. The display unit 151 and the sound / . ≪ / RTI >

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 154 is vibration. The intensity and pattern of the vibration generated by the hit module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. At least two haptic modules 154 may be provided according to the configuration of the mobile terminal 100.

The memory unit 160 may store a program for processing and controlling the control unit 180 and temporarily store the input / output data (e.g., telephone directory, message, audio, For example. The memory unit 160 may store the frequency of use of each of the data (for example, each telephone number, each message, and frequency of use for each multimedia).

In addition, the memory unit 160 may store data on vibration and sound of various patterns output when the touch is input on the touch screen.

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 (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

When the mobile terminal 100 is connected to an external cradle, the interface unit may be a path through which power from the cradle is supplied to the mobile terminal 100, or various command signals input by the user to the cradle may be transmitted It can be a passage to be transmitted to the terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

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 power supply unit 190 may include, for example, a battery, a connection port, a power supply control unit, and a charge monitoring unit.

The battery may be an internal battery configured to be chargeable, and may be detachably coupled to the terminal body for charging or the like. The connection port may be configured as an example of an interface 170 through which an external charger for supplying power for charging the battery is electrically connected.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

FIG. 2 is a perspective view of a mobile terminal or a portable terminal according to the present invention, as viewed from the front.

The disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body of the mobile terminal 100 includes a casing 101, 102, In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102.

 In some cases, electronic components may be mounted on the surface of the rear case 102 as well. Electronic components mounted on the surface of the rear case 102 include a battery, a USIM card, a memory card, and the like which are detachable by the user. At this time, the rear case 102 may further include a rear cover 103 for covering the surface thereof. When the rear cover 103 is removed, the surface of the rear case 102 is exposed.

As shown in FIG. 2, when the rear cover 103 is coupled, only a part of the side surface of the rear case 102 may be exposed. When the size of the rear cover 103 is reduced, Some may also be exposed. And an opening 103 'for exposing the camera 121' or the sound output unit 152 'to the outside when the rear cover 103 covers the entire rear surface of the rear case 102.

The cases 101, 102, and 103 may be formed by injection molding synthetic resin or may be formed of a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, and the interface 170 may be disposed in the terminal cases 101 and 102.

The display unit 151 occupies most of the main surface of the front case 101. A sound output unit 152 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131, 132, and 133. The operation units 131, 132, and 133 may be collectively referred to as a manipulating portion.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives a command such as start, end, scroll, and the like, and the second operation unit 132 inputs a command such as adjustment of the sound output from the sound output unit 152 And the third operation unit 133 can receive commands such as activation / deactivation of the touch recognition mode of the display unit 151 and the like.

In addition to the display unit 151, the operation units 131, 132, and 133 may be provided with touch sensors, It is also possible to receive a command of the user by touch alone.

3 is a rear perspective view of the mobile terminal shown in FIG.

Referring to FIG. 3, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2), and may be a camera having the same or different pixels as the camera 121.

For example, the camera 121 may have a low pixel so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the camera 121 ' It is preferable to have a large number of pixels. The cameras 121 and 121 'may be installed in the terminal body such that they can be rotated or pop-up.

A flash 123 and a mirror 124 may be additionally disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

An acoustic output 152 'may be additionally disposed on the rear surface of the terminal body. The sound output 152 'on the rear side of the body may implement the stereo function together with the sound output 152 (see FIG. 2) of the front side of the body, and may be used for the implementation of the speakerphone mode during a call.

FIG. 4 is a rear perspective view showing a rear surface of a rear case of a mobile terminal according to an embodiment of the present invention. FIG. 4, the front case 101, the rear case 102, the rear cover (or the battery cover) 103, the camera 121 ', the interface 170, the microphone 122, A battery 191, a battery mounting portion 104, a USIM card mounting portion 105, and a memory card mounting portion 106 are shown.

The rear case 102 may have a space on which external components such as the battery loading unit 104, the USIM card loading unit 105, and the memory card loading unit 106 may be mounted. In general, an external component mounted on the surface of the rear case 102 is used to extend the functions of the mobile terminal 100 in order to satisfy diversified functions of the mobile terminal 100 to be.

As the performance of the mobile terminal 100 is diversified, a battery 191 may be replaced with a battery 191 as shown in FIG. 4 to compensate for a large power consumption. In the case of the interchangeable type, a battery mounting portion 104 is formed on the surface of the rear case 102 so that a user can attach and detach the battery. The battery mounting portion 104 is provided with a connection terminal to be electrically connected to a component mounted inside the case.

4, the USIM card mounting portion 105 and the memory card mounting portion 106 may be formed on the side of the battery mounting portion 104, on the bottom surface of the battery mounting portion 104, May be formed to be exposed to the outside. In this case, the size of the battery mounting portion 104 can be larger, and the size of the battery 191 can be increased.

4 shows a configuration in which the USIM card mounting portion 104 and the memory card mounting portion 106 are mounted on the rear surface of the rear case 102. In addition, Do.

The battery cover 103 covers the surface of the rear case 102 so that the battery 191 mounted on the rear case 102, the USIM card, the memory card and the like are fixed so as not to be detached, Thereby protecting the external component. A waterproof structure (not shown) for sealing the rear case 102 and the battery cover 103 when the rear case 102 and the battery cover 103 are coupled to each other so as to prevent water from being injected into the external components is added.

5 is an exploded perspective view showing a shield can and a printed circuit board 200 of a mobile terminal according to the present invention. The shield can 210 and the shield can 210, which are coupled to one surface of the printed circuit board 200 and the other surface of the printed circuit board 200, 220 are shown.

The printed circuit board 200 is a plate-like member in which an electronic element 201 is mounted on a surface thereof and a circuit pattern for signal transmission is printed between the electronic elements 201, and controls the mobile terminal. The printed circuit board 200 shown in FIGS. 5 to 14 includes a main printed circuit board 200 disposed at the center of the case at the rear of the display unit, a printed circuit board 200 for assisting the functions of the individual electronic components, Are also included in the present invention.

Since the signal components generated from the electronic device 201 or the electronic component are noise that interferes with other signals or affects the operation of other electronic components, the printed circuit board 200 needs to be blocked.

The shield can (210, 220) is installed on the printed circuit board (200) to prevent interference by electromagnetic waves and to reduce noise. The shield can (210, 220) of the present invention is configured as a pair covering one surface and the other surface of the printed circuit board (200).

The shield can 210 and 220 of the present invention is constituted by the upper surfaces 213 and 223 and the side walls extending in the vertical direction on the upper surfaces 213 and 223. The shape of the upper surfaces 213 and 223 preferably corresponds to the shape of the printed circuit board 200 to cover the printed circuit board. Meanwhile, the number of the side walls may vary depending on the shape of the upper surfaces 213 and 223.

In general, the printed circuit board 200 is a rectangular plate-like member, and the shield can 210 and 220, which are formed by the rectangular upper surfaces 213 and 223 and the four side walls 211, 212, 221 and 222, The following description will be made with reference to the shield can 210 and 220 composed of the upper surface of the quadrangle and the pair of side walls 211, 212, 221 and 222.

The left and right side walls 211 and 221 of the pair of shield can 210 and 220 are male and female. That is, the coupling groove 215 and the coupling protrusion 225 are disposed facing each other, and the coupling protrusion 225 is inserted into the coupling groove 215 to couple the pair of shield can 210 and 220.

6 is a cross-sectional view taken along the line A-A 'of FIG. 5 when the shield can 210 and 220 are coupled to the printed circuit board 200, FIG. 7 is a sectional view of the shield can 210 and 220 shown in FIG. 200 "). ≪ / RTI > 6 and 7, a fastening protrusion 225 is formed inside the left and right side walls 221 of the shield can 220 which is coupled to the outside, and the right and left side walls 211 of the shield can 210, The fastening protrusion 225 may be formed on the inner side wall 211 and the fastening groove 215 may be formed on the outer side wall 221. [

The right and left side walls 211 and 221 of the other shield can 220 are formed in a single shield can 210 so as to face the coupling groove 215 And a coupling groove 215 may be formed at a position where the coupling projection 225 faces the coupling projection 225. In this case,

The pair of shield can 210 and 220 can be fixed by the coupling groove 215 and the coupling protrusion 225 but the coupling structure of the printed circuit board 200 and the shield can 210 and 220 is required. The left and right side walls 211 and 221 of the shield can 210 and 220 are coupled by male and female coupling so that the printed circuit board 200 and the shield can 210 and 220 are coupled to each other. (200) and the clip (205).

8 is a sectional view taken along the line C-C 'when the shield can 210 and 220 of FIG. 5 are coupled with the printed circuit board 200. The upper and lower sidewalls 212 and 220 of the shield can 210 and 220 And 222 are coupled to each other.

As shown in Fig. 8, the coupling by the clip 205 is about 1 mm in the space required for mounting the clip 205 on the left and right ends of the printed circuit board 200. Fig. On the other hand, the thickness of the side walls for male and female coupling is about 0.15 to 0.2 mm, respectively, and only a space of 0.4 to 0.45 mm is required even in consideration of the error range. Therefore, The component mounting surface of the printed circuit board 200 can be made wider.

That is, the clip 205 is disposed only on the upper and lower sides of the printed circuit board 200 and the clip 205 for fixing the left and right side walls 211 and 221 is omitted, The mounting space of the printed circuit board 200 is widened.

The shield can 210, which covers one side of the printed circuit board 200 and is in contact with the printed circuit board 200, is referred to as a first shield can 210, The shield can 220, which covers the other surface and is in contact with the outside of the left and right side walls 211 of the first shield can 210 and is coupled to the first shield can 210, is referred to as a second shield can 220.

The height of the left and right side walls 211 of the first shield can 210 can be variously changed. The height of the left and right side walls 211 of the first shield can 210 is equal to the height of the left and right side walls 221 of the second shield can 220, The second shield can 220 contacts the printed circuit board 200 on the inner side of the first shield can 211.

Since the shield can 210 and 220 of this embodiment are fixed to the printed circuit board 200 which is damaged by the clip 205 but the middle portion is not fixed to the printed circuit board 200, The printed circuit board 200 can move within the shield can 210,

In order to prevent this, the first shield can 210 may be formed with a first support step 216 as shown in FIG. The first support step 216 supports the end of one side of the printed circuit board 200 as shown in FIG. 7, so that the movement of the PCB 200 in the Z-axis direction can be reduced.

Next, the shield can 210 and 220 according to another embodiment of the present invention will be described with reference to FIGS. 9 to 11. FIG. FIG. 9 is an exploded perspective view showing shield can 210 and 220 and printed circuit board 200 according to another embodiment of the present invention. FIG. 10 is a cross-sectional view taken along the line D-D ' And Fig. 10 shows a cross section of E-E '.

The left and right side walls 211 of the first shield can 210 according to another embodiment of the present invention shown in FIG. 9 are shorter than the left and right side walls 221 of the second shield can 220. Therefore, as shown in FIG. 10 or 11, the ends of the left and right side walls 211 of the first shield can 210 contact one surface of the printed circuit board 200.

The left and right side walls 211 of the first shield can 210 according to the embodiment of FIGS. 5 to 8 have the same length as the left and right side walls 221 of the second shield can 220, The ends of the left and right side walls 211 of the first shield can 210 support one side of the printed circuit board 200 The movement of the printed circuit board 200 in the Z-axis direction can be restricted.

In other words, according to the embodiment shown in Figs. 9 to 11, it is possible to eliminate the swinging in the upper direction of the printed circuit board 200 without the first support step 216 of the above-described embodiment. However, since the left and right side walls 221 of the second shield can 220 can be closed by the left and right side walls 211 of the first shield can 210, The second support jaw 226 may be further provided.

As shown in FIG. 10, the second support step 226 supports the other surface of the printed circuit board 200, thereby preventing the printed circuit board 200 from shaking in the Z-axis direction. That is, according to this structure, a stable coupling structure can be provided as in the case where the clip 205 is provided on all four sides.

Next, another embodiment of the present invention will be described with reference to FIGS. 12 to 14. FIG. 12 is an exploded perspective view showing shield can 210 and 220 and printed circuit board 200 according to another embodiment of the present invention. FIG. 13 is a cross-sectional view taken along line F-F ' And Fig. 14 shows a cross section of G-G '.

The present embodiment further includes a fixing wall 214 extending from the left and right side walls 211 of the first shield can 210 to the upper surface of the second shield can 220 in the embodiment shown in FIG. . At this time, a cutout groove 206 is formed in the printed circuit board 200 at a position corresponding to the fixed wall 214 so that the fixed wall 214 can be positioned.

The fixing wall 214 extending from the left and right side walls 211 of the first shield can 210 to the upper surface of the second shield can 220 maintains a distance from the second shield can 220, So that the connection with the shield can 220 can be stably performed. Since the fixing wall 214 is located between the printed circuit boards 200, the movement of the printed circuit board 200 in the Y-axis direction (movement in the direction of the upper and lower walls) can be fixed.

As shown in FIG. 12, the second support jaw 226 and the fixing wall 214 (see FIG. 12) are formed so that the fixing wall 214 does not interfere with the second supporting jaw 226 formed in the second shield can 220, ) Can be formed by grinding. 13 is a cross-section of a portion F-F 'where the fixing wall 214 extends, and FIG. 14 is a cross-sectional view of the portion G-G' where the second supporting step 226 is formed.

That is, the ends of the left and right side walls 211 of the first shield can 210 and the second supporting protrusions 226 are connected to each other by the Z (Z) of the printed circuit board 200 and the clips 205 of the upper and lower side walls 212, The movement in the Y-axis direction of the printed circuit board 200 can be fixed while minimizing the movement in the axial direction and stabilizing the engagement of the pair of shield cans 210 and 220 by the fixing wall 214 .

As described above, according to at least one embodiment of the present invention, the male and female coupling methods using the fastening protrusions 225 formed in the left and right side walls 211 and 221 of the shield can 210 and 220, The space for coupling the shield can 210 and 220 can be reduced as compared with the case where the four shielding faces 210 and 220 are fixed by the clip 205 by fixing the shield can 210 and 220 to the printed circuit board 200 The mounting space of the electronic element 201 can be ensured.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Accordingly, the above description should not be construed in a limiting sense in all respects and should be considered illustrative. The scope of the present invention should be determined by rational interpretation of the appended claims, and all changes within the scope of equivalents of the present invention are included in the scope of the present invention.

100: mobile terminal 110: wireless communication unit
120: A / V input / output unit 130: user input unit
140: sensing unit 150: output unit
160: memory 170: interface section
180: control unit 190: power supply unit
200: printed circuit board 201: electronic device
205: clip 206: incision groove
210: first shield can 211: left and right side walls of the first shield can
212: upper and lower sidewalls of the second shield can 213: upper surface of the first shield can
214: Fixed wall
215: fastening groove 216: first supporting chin
220: second shield can 221: left and right side walls of the second shield can
222: upper and lower sidewalls of the second shield can 223: upper surface of the second shield can
225: fastening protrusion 226: second supporting chin

Claims (9)

A case forming an appearance of the mobile terminal;
A printed circuit board located inside the case and having a plurality of electronic elements mounted on a surface thereof;
And covers one surface and the other surface of the printed circuit board. A pair of shield cans including a top surface and side walls extending from the top surface;
A plurality of fastening grooves formed on left and right side walls of one of the pair of shield cans; And
And a plurality of fastening protrusions formed on left and right side walls of the other one of the pair of shielding cans and matingly engaging with the fastening grooves,
The pair of shield can (s)
A first shield can which covers at least a part of one surface of the printed circuit board, the inner side of which is in contact with a side surface of the printed circuit board; And
Wherein the upper surface covers at least a part of the other surface of the printed circuit board and includes a second shield can that is in contact with an outer side of the right and left side walls of the first shield can,
And the end portions of the left and right side walls of the first shield can contact the upper surface of the second shield can. ◈ Claim 2 is abandoned due to payment of registration fee. The method according to claim 1,
Further comprising a clip formed on the upper and lower surfaces of the printed circuit board,
And the upper and lower walls of the shield can are inserted into the clip and coupled with the printed circuit board. delete delete ◈ Claim 5 is abandoned due to the registration fee. The method according to claim 1,
The first shield can further includes a plurality of first support protrusions protruding inward from edges of the upper surface and the right and left side walls,
Wherein the support jaw supports the printed circuit board in contact with one surface of the printed circuit board. A case forming an appearance of the mobile terminal;
A printed circuit board located inside the case and having a plurality of electronic elements mounted on a surface thereof;
And covers one surface and the other surface of the printed circuit board. A pair of shield cans including a top surface and side walls extending from the top surface;
A plurality of fastening grooves formed on left and right side walls of one of the pair of shield cans; And
And a plurality of fastening protrusions formed on left and right side walls of the other one of the pair of shielding cans and matingly engaging with the fastening grooves,
The pair of shield can (s)
The upper surface of the first shield can cover at least a part of one surface of the printed circuit board; And
Wherein the upper surface covers at least a part of the other surface of the printed circuit board and includes a second shield can that is in contact with an outer side of the right and left side walls of the first shield can,
And the end portions of the left and right sidewalls of the first shield can contact one surface of the printed circuit board. ◈ Claim 7 is abandoned due to registration fee. The method according to claim 6,
Wherein the printed circuit board has a plurality of cut-out grooves formed at left and right ends thereof,
Further comprising a plurality of fixing walls extending from the left and right sidewalls of the first shield can and an end of which is in contact with the upper surface of the second shield can,
And the fixing wall is inserted into the incision groove. ◈ Claim 8 is abandoned due to the registration fee. The method according to claim 6,
The second shield can further includes a plurality of second supporting protrusions protruding inward from corners of the upper surface and the right and left side walls,
And the second support jaw contacts the other surface of the printed circuit board to support the printed circuit board. ◈ Claim 9 is abandoned upon payment of registration fee. The method according to claim 6,
Wherein the printed circuit board has a plurality of cut-out grooves formed at left and right ends thereof,
Further comprising a plurality of fixing walls extending from left and right sidewalls of the first shield can and inserted into the cutout groove and having ends abutting the upper surface of the second shield can,
The second shield can further includes a plurality of second support jaws protruding inward from the edges of the upper surface and the left and right sidewalls to support the other surface of the printed circuit board,
Wherein the plurality of fixing walls and the plurality of second supporting jaws are formed in a thin shape.

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