KR20120119327A - Mobile terminal - Google Patents

Abstract

The present invention relates to a portable terminal that can effectively shield electromagnetic waves generated in the portable terminal and can replace the conventional shield can to shield the electromagnetic waves, thereby reducing the thickness, weight and cost of the portable terminal.

Description

Portable Terminal {MOBILE TERMINAL}

The present invention relates to a portable terminal. More specifically, the present invention relates to a portable terminal that can effectively shield electromagnetic waves generated in the portable terminal and can replace the conventional shield can to shield the electromagnetic waves, thereby reducing the thickness, weight and cost of the portable terminal. will be.

Portable terminals (mobile phones, MP3 players, PMPs, laptops, tablet computers) are devices that allow users to use a variety of contents while carrying them. In order to become more and more miniaturized and thinner.

These portable terminals are becoming multifunctional in order to meet the increasing demands of users, and the boundaries of each portable terminal are being broken down.

Therefore, in order to fulfill various demands while miniaturizing and thinning the portable terminal, semiconductor devices and the like mounted on the circuit unit provided in the portable terminal are miniaturized and the degree of integration thereof is increasing.

Semiconductor devices mounted on the circuit part may generate electromagnetic waves, and may adversely affect the operation of the electronic device or the human body. This phenomenon is called an electromagnetic interference (EMI) phenomenon, and the EMI is noise of the electronic device. Of course, it also acts as a harmful element to the human body.

Therefore, in recent years, EMI shielding from electronic components is blocked by covering a certain area in which electronic components such as a semiconductor device mounted on an internal printed circuit unit or a semiconductor device is mounted with a shield can made of metal. Attempts are made to minimize or affect the operation of other electronics as well as their own.

Conventionally, a shield can made of metal is used to shield EMI generated from the portable terminal. However, the thickness of the portable terminal increases due to the mounting structure for mounting the shield can and the thickness of the shield can itself.

In addition, the portable terminal may include a plurality of printed circuit units, and may be mounted by stacking a plurality of printed circuit units.

As such, when the shield can is mounted and the substrates are stacked, it is not easy to reduce the thickness of the portable terminal. In addition, the shield can is made of a metallic material to increase the weight and cost of the portable terminal.

The present invention can effectively shield the electromagnetic waves generated in the portable terminal, and to solve the problem to provide a portable terminal that can reduce the thickness, weight and cost of the portable terminal by replacing the conventional shield can to shield the electromagnetic wave We assume problem to do.

In order to solve the above problems, the present invention provides a conductive electromagnetic shielding member provided between the first circuit board, the second circuit board, the first circuit board and the second circuit board, and the lower surface of the edge of the conductive electromagnetic shielding member. Provided is a portable terminal including at least one conductive wall member fixed to one of a first circuit board and a second circuit board.

In this case, an area of the conductive electromagnetic shielding member may correspond to an area of a first circuit board having a larger area among the first circuit board and the second circuit board.

In addition, a plurality of conductive wall members are spaced apart from each other, and a lower surface thereof is bonded to a first circuit board having a larger area among the first circuit board and the second circuit board. It may be attached to the upper surface of the wall member.

In this case, the conductive wall member may include a metal plate on a lower surface and a conductive foam on the metal plate, and the conductive wall member may be joined by a welding method along the insulating member of the first circuit board.

In addition, the height of the conductive wall member may be higher than the height of the components mounted on the first circuit board.

An auxiliary conductive electromagnetic shielding member may be provided between the lower surface of the second circuit board and the conductive electromagnetic shielding member.

Here, an auxiliary insulating member having at least one opening opening through which the auxiliary conductive electromagnetic shielding member is exposed may be provided on a lower surface of the auxiliary conductive electromagnetic shielding member.

In this case, a connection protrusion may be provided on the top surface of the conductive electromagnetic shielding member so as to be electrically connected to the auxiliary conductive electromagnetic shielding member through an opening of the auxiliary insulating member.

In addition, a conductive connector may be provided on an upper surface of the conductive electromagnetic shielding member to be electrically connected to the auxiliary conductive electromagnetic shielding member through the opening.

In this case, a mounting groove in which the conductive connector is seated may be provided on an upper surface of the conductive electromagnetic shielding member.

In addition, an insulating member may be further provided on a lower surface of the conductive electromagnetic shielding member.

The insulating member may insulate an area other than a junction between the conductive electromagnetic shielding member and the conductive wall member.

Here, the heat radiation member may be further provided between the first circuit board and the conductive electromagnetic shielding member.

In this case, the conductive electromagnetic shielding member may include an anisotropic conductive adhesive layer.

In addition, the conductive electromagnetic shielding member or the auxiliary conductive electromagnetic shielding member may include a thin layer or coating of copper (CU), nickel (Ni), gold (Au).

In addition, in order to solve the above problems, a first circuit board, a first conductive electromagnetic shielding member attached to one surface of the first circuit board, at least one opening provided with the first conductive electromagnetic shielding member is provided with at least one A first circuit part including an insulating member, a second circuit board, a second conductive electromagnetic shielding member attached to one surface of the second circuit board, and a second opening provided with at least one opening through which the second conductive electromagnetic shielding member is exposed. 2, a second circuit part having an insulating member, and an intermediate conductive electromagnetic shielding member disposed between the first insulating member of the first circuit part and the second insulating member of the second circuit part.

In addition, a connection protrusion may be provided on an upper surface of the intermediate conductive electromagnetic shielding member so as to be electrically connected to the first or second conductive electromagnetic shielding member through an opening of the first or second insulating member.

The first or second conductive electromagnetic shielding member and the intermediate conductive electromagnetic shielding member may be disposed between the intermediate conductive electromagnetic shielding member and the first or second insulating member through the opening of the first or second insulating member. A conductive connector for electrically connecting may be provided.

In this case, the insulating member or the conductive electromagnetic shielding member of the first circuit portion or the second circuit portion may be in close contact with the surface of the circuit board.

In addition, the conductive electromagnetic shielding member is provided with an anisotropic conductive adhesive layer, it can be attached to a circuit board.

The electromagnetic wave generated in the portable terminal according to the present invention can be effectively shielded.

In addition, the portable terminal according to the present invention can replace the conventional shield can to shield the electromagnetic waves, it is possible to reduce the thickness and weight of the portable terminal.

In addition, according to the portable terminal according to the present invention, the mounting structure of the shield can and the shield can can be omitted, and the portable terminal can be further slimmed down or downsized.

In addition, according to the portable terminal according to the present invention, it is possible to omit the mounting structure of the shield can and the shield can to enhance the price competitiveness of the product.

1 is a block diagram of a portable terminal related to an embodiment of the present invention.
2 shows a perspective view of a portable terminal according to the present invention.
Figure 3 is an exploded perspective view of the portable terminal according to the present invention from the front.
Figure 4 is an exploded perspective view of the portable terminal according to the present invention from the rear.
FIG. 5 illustrates a state in which a circuit can and a shield can shown in FIG. 4 are fastened.
6 illustrates a conductive electromagnetic shielding member and a conductive wall member constituting a circuit portion according to the present invention.
7 is a sectional view of another embodiment of a circuit portion of a portable terminal according to the present invention.
Figure 8 shows a cross-sectional view of another embodiment of a circuit portion of a portable terminal according to the present invention.
9 shows a cross-sectional view of another embodiment of a circuit portion of a portable terminal according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Like numbers refer to like elements throughout.

The portable terminal described herein is not limited to a mobile phone as a telephone illustrated in the drawings, but is a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia (PMP). Since it can be widely applied to a player, navigation, etc., it should be understood as a concept including a portable electronic product.

First, referring to FIG. 1, a portable terminal according to the present invention will be described in terms of components according to functions.

1 is a block diagram of a portable terminal related to an embodiment of the present invention.

The illustrated mobile terminal 100 includes a wireless communication unit 110, an A / V (Audio / Video) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, The interface unit 170 may include a controller 180, a power supply unit 190, and the like. When the components are implemented in an actual application, two or more components may be combined into one component as needed, or one component may be divided into two or more components.

Hereinafter, the components will be described in order.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short distance communication module 114 and a GPS module 115.

The broadcast receiving module 111 receives a broadcast signal 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. 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-related information may refer to a broadcast channel, a broadcast program, or information related to 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.

Meanwhile, the broadcast related information may be provided through a mobile communication network, and in this case, it may be received by the mobile communication module 112.

The broadcast related information may exist in various forms. For example, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) Only Digital Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like.

Of course, the broadcast receiving module 111 may be configured to be suitable for all broadcast systems providing broadcast signals as well as the above-described digital broadcast system.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

In addition, the mobile communication module 112 transmits and receives radio signals 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 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 the wireless Internet module 113 can be built in or externally.

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 the short distance communication technology.

In addition, the Global Position System (GPS) module 115 receives position information from a plurality of satellites.

The wireless communication unit 110 may be embodied as an antenna module. The antenna module may be a multiple antenna (MIMO).

An audio / video (A / V) 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 call mode or the photographing mode. The processed image frame may 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 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into 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. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of 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 dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151, which will be described later, it can be called a touch screen. The user input unit 130 may be provided in one portable terminal according to the type of each input.

The sensing unit 140 detects the current state of the portable terminal 100 such as the open / closed state of the portable terminal 100, the position of the portable terminal 100, the presence or absence of a user contact, and the like to control the operation of the portable terminal 100. Generate a sensing signal.

For example, when the portable terminal 100 is in the form of a slide phone, whether the slide phone is opened or closed may be sensed. Also, it is responsible for a sensing function related to whether or not the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like.

The interface unit 170 serves as an interface with all external devices connected to the portable terminal 100. For example, wired / wireless headsets, external chargers, wired / wireless data ports, card sockets (e.g. memory cards, SIM / UIM cards), audio input / output (I / O) terminals, video I / O (Input / Output) terminal, earphone, etc.

The interface unit 170 may receive data from an external device or receive power and transmit the data to each component inside the portable terminal 100 or transmit data within the portable terminal 100 to an external device.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 includes a display unit 151, an audio output module 152, an alarm unit 153, a haptic module 154, and the like. This may be included.

The display unit 151 displays and outputs information processed by the portable terminal 100. For example, when the portable terminal is in a call mode, a user interface (UI) or a graphic user interface (GUI) related to a call is displayed. When the portable terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays a photographed and / or received image, a UI, or a GUI.

Meanwhile, as described above, when the display unit 13 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.

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, a three-dimensional display 3D display).

In addition, two or more display units 151 may exist according to the implementation form of the portable terminal 100.

The sound 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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the portable 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 occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal include call signal reception, message reception, key signal input, and touch input. 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. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output. In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through an injection or inlet port, grazing to the skin surface, contact of an electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation. 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. Two or more haptic modules 154 may be provided according to a configuration aspect of the portable terminal 100.

The memory 160 may store a program for processing and controlling the controller 180 and may provide a function for temporarily storing input / output data (for example, a phone book, a message, a still image, a video, etc.). It can also be done.

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 that performs a storage function of the storage unit 150 on the Internet.

The controller 180 typically controls the overall operation of the portable terminal. 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 an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

In the above, the portable terminal according to the present invention has been described in terms of components according to functions. Hereinafter, referring to FIG. 2, the portable terminal according to the present invention will be further described in terms of components according to appearance.

Hereinafter, for convenience of description, a bar type portable terminal will be described as an example among various types of portable terminals such as a folder type, a bar type, a swing type, a slider type, and the like. Therefore, the present invention is not limited to the bar type portable terminal, but can be applied to all types of portable terminals including the above-described type.

2 shows a perspective view of a portable terminal according to the present invention. Specifically, Figure 2 (a) is a front perspective view of an example of a portable terminal according to the present invention.

The body includes a cover forming an appearance. In this embodiment, the cover may be divided into a front cover 101 and a rear cover 102. Various electronic components may be embedded in a space formed between the front cover 101 and the rear cover 102. At least one inner case may be further disposed between the front cover 101 and the rear cover 102.

The cover or cases may be formed by injecting 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 user input unit 130 is manipulated to receive a command for controlling the operation of the portable terminal 100 and may include a plurality of user input units 131, 132, and 133. The user inputs 131, 132, and 133 may also be collectively referred to as manipulating portions, and may be employed in any manner as long as the user is tactile in a tactile manner.

Content input by the first or third user input units 131, 132, and 133 may be variously set. For example, the first user input unit 131 receives a command such as start, end, scroll, and the like, and the second user input unit 132 adjusts or outputs the sound output from the sound output module 152. Command), such as switching to the touch recognition mode, and the like, and the third user input unit 133 may be a camera button for operating the camera 122.

The display unit 151, the audio output module 152, the camera 121, and the first user input unit 131 may be disposed in the portable terminal main body, mainly the front cover 101. The front cover 101 may be made of tempered glass or the like.

The display unit 151 occupies most of the main surface of the front cover 101. The sound output unit 151 and the camera 121 may be disposed in areas adjacent to one end of both ends of the display unit 151, and the first user input unit 131 may be disposed in an area adjacent to the other end. The second user input unit 132, the third user input unit 133, the interface 170, and the like may be disposed on side surfaces of the portable terminal.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 ′ may be additionally mounted on the rear of the terminal body, that is, the rear cover 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 provided in the front cover 101 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the camera 121 'has a general subject. In many cases, it may be configured to have a high pixel since the photographing is not performed immediately.

The cameras 121 and 121 'may be installed in the main body of the terminal so as to be rotatable or pop-up.

A flash 123 and a mirror 124 may be additionally disposed adjacent to the camera 121 '. The flash 123 may provide illumination toward 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 antenna (not shown) for receiving a broadcast signal may be additionally disposed on the side surface of the terminal body in addition to an antenna for a call or the like. An antenna that forms part of the broadcast receiving module 111 (refer to FIG. 1) may be installed to be pulled out of the terminal body.

The terminal body may be equipped with a power supply unit 190 (see FIG. 3) for supplying power to the portable terminal 100. The power supply unit may be built in the terminal body, or may be configured to be directly removable from the outside of the terminal body.

In the embodiment illustrated in FIG. 2, the power supply unit may be detachably detached from the portable terminal in a state in which the rear cover 102 is removed.

The microphone 122 of the portable terminal illustrated in FIG. 2 may be provided at the lower side of the rear cover 102, and the interface unit 170 may be provided at the side of the rear cover 102.

Figure 3 is an exploded perspective view of the portable terminal according to the present invention from the front.

In the above-described embodiment, the cover of the portable terminal is divided into a front cover 101 and a rear cover 102, and at least one inner case may be additionally disposed between the front cover 101 and the rear cover 102. have.

In the embodiment shown in FIG. 3, the inner case includes a front case 103 and a rear case 104.

The front case 103 may be equipped with an LCD panel or the like as the display unit 151, and tempered glass or a transparent panel may be provided as the front cover 101 in front of the display unit 151.

The front cover 101 may be mounted to the front case 103 constituting the inner case. The front cover 101 and the front case 103 may be attached by an adhesive or an adhesive member without using a separate fastening member or the like.

A portion of the front case 103 constituting the inner case may be configured to be exposed to the outside of the portable terminal. As shown in FIG. 2A, the edge of the front case 103 may be configured to be exposed to the outside to form an edge of the portable terminal.

The circuit unit 200 may be provided between the front case 103 and the rear case 104 constituting the inner case. The front case 103 and the rear case 104 are fastened by the fastening part 320 material, and the circuit part 200 having the PCB shape can be accommodated therebetween.

The circuit unit 200 may be installed at a position that does not overlap in the thickness direction of the battery mounting unit 104g and the portable terminal. This is to minimize the thickness of the portable terminal.

Therefore, as shown in FIG. 3, the circuit unit 200 is disposed in an upper portion of the space between the front case and the rear case, and the battery mounting unit is provided at a lower rear surface of the rear case 104 in the thickness direction. The battery and the circuit unit 200 may be configured not to overlap.

The first user input unit 131 may be mounted between the front case 103 and the rear case 104, and the front cover 101 and the front case 103 may include the first user input unit 131. Mounting holes 103h and 151h for mounting may be formed, respectively.

The circuit unit 200 may be composed of one circuit board, or two or more circuit boards may be stacked.

In addition, one circuit board forming the circuit unit 200 may be a single-sided circuit board on which circuit components are mounted on only one surface, or may be a double-sided circuit board on which circuit components are mounted on both surfaces.

In addition, one circuit unit 200 includes a plurality of circuit boards, and at least two or more stacked circuit boards may have different sizes.

3 illustrates an example in which a circuit board constituting one circuit unit 200 is composed of two circuit boards 210 and 230. That is, the second circuit board is stacked on the first circuit board 210. Of course, a plurality of circuit units may be provided in one portable terminal.

Conventionally, a circuit board constituting a circuit part often uses a shield can to shield electromagnetic waves generated during operation and to secure a predetermined grounding force. The circuit unit 200 of FIG. 3 is mounted with circuit components that perform various functions. Therefore, electromagnetic waves may be generated while the portable terminal is in use. In general, while electromagnetic waves have useful side effects such as wireless communication and radar, they may adversely affect the operation of electronic devices. This phenomenon is called an electromagnetic interference (EMI) phenomenon. Not only does it generate noise, it also acts as a harmful element to the human body.

Therefore, the shield can made of metal shields electromagnetic waves and is grounded along the insulating member 270 formed on the circuit board. Therefore, the shield can or the like shielding a predetermined area of the circuit board for electromagnetic shielding must include a metal layer and ensure electrical conductivity.

However, since the conventional shield can has a limitation in reducing the thickness of the portable terminal due to its thickness and the thickness of the mounting structure for mounting the shield can, the portable terminal according to the present invention is conventional for electromagnetic shielding and grounding. Use a structure to replace metallic shield cans. Detailed description thereof will be described later with reference to FIG. 6.

The circuit unit 200 may be seated on the recessed part 104P formed in the upper portion of the rear case 104 in the front direction.

The flexible circuit board f shown in FIG. 3 may serve to connect an input unit such as the antenna module, the circuit unit 200, a user input unit, or a microphone (not shown) with the circuit unit 200. That is, the flexible printed circuit board f may be used as a means for electrically connecting the respective parts at the spaced positions.

The circuit unit 200 may be configured such that a camera or the like is mounted to expose the camera or the like through the rear case 104.

The lower portion of the rear case 104 may be provided with a battery mounting portion (104g) for mounting the battery as the power supply unit 190.

The battery mounting part 104g may be provided on a rear surface of the inner case 104 facing the rear cover 102. As shown in FIG. 3, the battery mounting part 104g is provided under the rear surface of the inner case 104 facing the rear cover 102, has a step, and has a shape that is matched to the antenna carrier of the antenna module. Can be.

The battery mounting portion 104g may be configured in the form of a mounting groove for mounting the power supply unit 190 in the rear case 104 direction, or may be configured in the form of an opening.

In the embodiment shown in Figure 3, the battery mounting portion 104g is configured in the form of an opening, so that the battery as the power supply unit 190 can be supported on the back side of the front case 103.

Each of the components shown in FIG. 3 may be assembled by being fastened to a cover or the like by a fastening bolt (b) or the like, respectively or together.

4 shows a perspective view of an exploded state of the circuit unit 200 of the portable terminal according to the present invention, and FIG. 5 shows an integrated state of the circuit unit 200 of the portable terminal according to the present invention shown in FIG. .

For convenience of description, the circuit board constituting the circuit unit illustrated in FIGS. 4 and 5 is assumed to have a rectangular shape unlike the circuit unit illustrated in FIG. 3.

In the case of the embodiment shown in Figure 4 one circuit portion may be composed of two circuit boards (main circuit board and sub-circuit board). Therefore, the sub circuit board may be mounted on the main circuit board.

For convenience of description, the main circuit board will be described as the first circuit board, and the sub circuit board will be described as the second circuit board.

The portable terminal according to the present invention includes a conductive electromagnetic shielding member 500 provided between the first circuit board 210, the second circuit board 230, the first circuit board 210, and the second circuit board 230. And at least one conductive wall member 400 connecting the edge of the conductive electromagnetic shielding member 500 to any one of the first circuit board and the second circuit board. .

The detailed structure of the conductive electromagnetic shielding member 500 will be described later.

The first circuit board 210 and the second circuit board 230 may be different kinds of substrates, and may have different areas or lengths.

In the embodiment shown in FIG. 4, the first circuit board 210 has a larger area than the second circuit board 230 which is a sub circuit board as a main circuit board.

The conductive electromagnetic shield 500 blocks the electromagnetic waves generated from each circuit board and serves to ground the second circuit board.

In the embodiment illustrated in FIG. 4, the second circuit board 230 constituting one circuit unit 200 does not have a separate ground structure, but is grounded to a case or the like via the first circuit board 230 which is a main circuit board. do.

Therefore, in order to electrically connect the first circuit board 210 and the second circuit board 230 in a spaced apart state, the conductive wall member 400 is used.

The conductive wall member 400 is described later, the lower portion is composed of a metal plate and the upper portion is provided with a conductive foam member.

Accordingly, as shown in FIGS. 4 and 5, the conductive wall member 400 is bonded to the first circuit board 210 at predetermined intervals. The bonding method may be a soldering method. The conductive wall member 400 may be bonded to the insulating member 270 on the first circuit board 210.

Since the conductive wall member 400 is made of a conductive material, the second circuit board 230 mounted on the first circuit board 210 via the conductive wall member 400 may be the conductive wall. It may be grounded to the first circuit board 210 side through the member 400.

An area of the electromagnetic shielding member 500 provided between the first circuit board 210 and the second circuit board 230 may correspond to an area of a circuit board having a larger area among the stacked circuit boards.

Therefore, as shown in FIGS. 4 and 5, the conductive electromagnetic shielding member 500 may have an area corresponding to the area of the first circuit board 210.

Since the magnitude of the electromagnetic wave generated from the main circuit board is large, the size of the conductive electromagnetic shielding member 500 may be configured to correspond to the size of the first circuit board 210 which is the main circuit board.

Therefore, electromagnetic waves generated at each of the first circuit board and the second circuit board by the conductive electromagnetic shielding member 500 are shielded by the conductive electromagnetic shielding member 500 and are coupled by electromagnetic waves generated at each circuit board. The ring can be prevented.

As shown in FIG. 5, the thickness of the conductive electromagnetic shielding member 500 is thinner than that of the conventional shield can and does not use a structure such as a metal mounting clip, thereby greatly reducing the thickness of the circuit part. In addition, the weight can also be reduced.

That is, since the conductive electromagnetic shielding member can be configured as a sheet or a film, the thickness and weight can be reduced compared to the metal shield can, and the conductive wall member 400 is formed of a metal plate at the bottom and a conductive foam at the top thereof. Since the member is composed of a thickness reduction effect due to the elastic foam material can be seen.

In addition, since both the conductive electromagnetic shielding member and the conductive wall member have conductivity, the grounding function of the conventional shield can can be secured.

6 illustrates a conductive electromagnetic shielding member and a conductive wall member constituting a circuit portion according to the present invention.

The conventional shield can has a structure having a bent edge and is fastened to a fastening clip attached to a substrate to secure electrical conductivity. However, since the conductive electromagnetic shielding member 500 constituting the circuit portion of the portable terminal according to the present invention has a sheet or film form, the conductive wall member may be used to electrically connect to the ground target circuit board.

The conductive electromagnetic shielding member 500 of the present invention is an anisotropic conductive adhesive layer 510, copper (CU) thin layer 520, nickel (Ni) on one side, as shown in Figure 6, in order to secure conductivity and electromagnetic shielding ) A thin layer 530, a gold (Au) thin layer 540, and a film layer 550.

The anisotropic conductive adhesive layer 510 ensures conductivity and at the same time allows the conductive electromagnetic shielding layer 500 to be attached to the conductive wall member 400 without a separate adhesive means. Therefore, grounding is possible through the conductive wall member at the same time as electromagnetic shielding.

In addition, electromagnetic waves may be effectively shielded through a thin copper (CU) layer 520, a thin nickel (Ni) layer 530, a thin gold (Au) layer 540, and the like. Of course, the heterogeneous thin metal layer may be additionally provided. In addition, each metal thin layer may be a coating or deposition method that is not in the form of a thin layer.

The configuration of the conductive electromagnetic shielding member 500 illustrated in FIG. 6 (a) is one of various methods for shielding electromagnetic waves and providing conductivity and adhesion, and is not limited thereto. Do not.

6B illustrates a perspective view of the conductive foam member 400. The conductive foam member may have a structure in which a metal plate 410 is provided on a lower surface thereof and a foam member 420 is provided on an upper portion thereof.

Accordingly, a plurality of conductive wall members 400 are spaced apart from each other, and a bottom surface thereof is bonded to a first circuit board 210 having a larger area among the first circuit board 210 and the second circuit board 230. A lower surface of the edge of the electromagnetic shielding member 500 may be attached to the upper surface of each of the conductive wall members, that is, the upper surface of the foam member 420.

In addition, the height of the conductive wall member is preferably higher than the height of the components mounted on the first circuit board to which the conductive wall member is bonded. This is because it is possible to attach the lower surface of the edge of the conductive electromagnetic shielding member 500 only when there is a slight margin.

The microstructure itself constituting the foam member 420 may be metal coated to form a conductive foam member 420. In addition, the lower metal plate 410 facilitates soldering and the like to the ground line 270 of the circuit board described above, and may have an advantage of increasing shear force after bonding such as soldering.

7 shows a cross-sectional view of some embodiments of a circuit portion of a portable terminal according to the present invention.

7 shows a circuit unit having a main circuit board and a sub circuit board as shown in FIGS. 4 and 5.

Accordingly, a first circuit board 210 as a main circuit board and a second circuit board 230 as a sub circuit board mounted on the first circuit board 210 are provided.

In the circuit part 200 illustrated in FIG. 7, a conductive electromagnetic shielding member 500 is provided between the first circuit board and the second circuit board. Since the conductive electromagnetic shielding member 500 has a conductive property, the electromagnetic shielding member 500 should be electrically connected to each circuit board at the same time as shielding the electromagnetic waves to remove the organic current generated by the electromagnetic shielding.

The embodiment shown in FIG. 7A is provided in the conductive electromagnetic shielding member 500 between the second circuit board 230 and the first circuit board 210. A conductive wall member 400 for mounting the conductive electromagnetic shielding member 500 in a spaced state is bonded to the first circuit board 210. A metal plate 410 is provided below the conductive wall member 400, and an upper portion of the conductive wall member 400 includes a conductive foam member 420.

Therefore, the lower metal plate portion can be joined to the first circuit board by welding or the like.

The conductive electromagnetic shielding member 500 provided between the first circuit board 210 and the second circuit board 230 shields electromagnetic waves generated from each circuit board, and at the same time, the second circuit board 230 The induced current is transmitted to the conductive electromagnetic shielding member 500, and when the substrates are stacked, the sub circuit board is grounded through the main circuit board.

As shown in FIG. 7B, the main circuit board and the sub circuit board are stacked in the same state as in FIG. 7A, and a second auxiliary conductive electromagnetic shielding member 500 ″ is further provided under the second circuit board. do.

Therefore, since the electromagnetic waves are shielded by the conductive electromagnetic shielding members 500 and 500 ″, each circuit board can reduce the amplification caused by the interaction (coupling) or the like provided by the circuit board.

In addition, in the embodiment illustrated in FIG. 7B, an auxiliary insulating member 600 ″ having an auxiliary conductive electromagnetic shielding member corresponding to the size of the second circuit board and having at least one or more openings therein is provided. May be further provided.

Accordingly, except for the opening 610 ″ formed in the insulating member, each conductive electromagnetic shielding member may be insulated from each other.

Therefore, in the embodiment shown in FIG. 7 (b), the electromagnetic wave generated in each circuit board is independently shielded through each conductive electromagnetic shielding member, and the second circuit board is each opened through an opening formed in the insulating member. It may be grounded through the first circuit board by providing an electrical connection between the conductive electromagnetic shielding member of the.

In this case, the auxiliary conductive electromagnetic shielding through the opening of the auxiliary insulating member 600 '' to the conductive electromagnetic shielding member 500 mounted on the first circuit board 210 via the conductive wall member 400. A protruding connecting protrusion 510 may be provided to be electrically connected to the member 500 ″. The connection protrusion 510 may be integrally formed with the conductive electromagnetic shielding member 500.

7 (c) is different from FIG. 7 (b), by separately mounting a conductive connector 700, not a connecting protrusion for connecting the conductive electromagnetic shielding member 500 and the auxiliary conductive electromagnetic shielding member 500 ''. The auxiliary conductive electromagnetic shielding member 500 ″ may be electrically connected to the conductive electromagnetic shielding member 500 to ground the second circuit board. In this case, a plurality of openings may be formed in the auxiliary insulating member 600 ″ as well.

Figure 8 shows a cross-sectional view of another embodiment of a circuit portion of a portable terminal according to the present invention. The difference from the embodiment shown in FIG. 7 will be described.

Unlike the embodiment illustrated in FIG. 7, the embodiment illustrated in FIG. 8A is a main circuit board, not an area of the auxiliary insulation member 600 ″, which corresponds to the second circuit board 230. The difference corresponds to the area of the first circuit board 210 or the conductive electromagnetic shielding member 500.

Therefore, since the conductive electromagnetic shielding member 500 may be prevented from being exposed to the outside in a region other than the second circuit board 230, side effects such as a short between other components may be prevented. In the case of the auxiliary insulation member 600 ″, since the thickness may be configured in a thin film form, the thickness of the circuit unit is not significantly different even when provided on the conductive electromagnetic shielding member.

8 (b), the insulating member 600 is further provided on the lower surface of the conductive electromagnetic shielding member 500 of the exemplary embodiment illustrated in FIG. 7, and heat generated from the first circuit board 210. A case in which a heat dissipation member 800 for dissipating heat is further provided.

In this case, the insulating member 600 attached to the bottom surface of the first conductive electromagnetic shielding member should not extend to the bonding or bonding portion of the conductive electromagnetic shielding member 500 and the conductive wall member. This is because grounding through the conductive wall member must be ensured. That is, only the region other than the bonding member of the conductive wall member 400 and the conductive electromagnetic shielding member 500 should be insulated.

The stacking order of the insulating member 900 and the heat dissipation member 800 may be changed. In addition, the heat dissipation member may be applied to the second circuit board, and the embodiment illustrated in FIG. 8 (b) may correspond to an example assuming that the heat generation amount of the first circuit board as the main circuit board is higher.

9 illustrates a cross-sectional view of some embodiments of a circuit portion of a portable terminal according to the present invention.

In the portable terminal according to the present invention, the first circuit board 210, the first conductive electromagnetic shielding member 500 and the first conductive electromagnetic shielding member 500 attached to one surface of the first circuit board 210 are exposed. A second conductive part attached to one surface of the first circuit part 200, the second circuit board 230, and the second circuit board 230 including the first insulating member 600 provided with at least one opening. A second circuit portion 200 'including an electromagnetic shielding member 500' 'and a second insulating member 600' 'provided with at least one opening through which the second conductive electromagnetic shielding member 500' 'is exposed. And an intermediate conductive electromagnetic shielding member 500 'disposed between the first insulating member 600 of the first circuit part 200 and the second insulating member 600' 'of the second circuit part 200'. It may include.

The embodiment shown in Fig. 9A shows a state in which two circuit parts are stacked. Of course, it can be seen that the circuit boards are stacked, but since the electromagnetic shielding structure and the insulating structure of each circuit board is provided, it will be described as a separate circuit portion is stacked.

Descriptions duplicated with those described with reference to FIGS. 7 and 8 will be omitted.

Unlike the embodiment illustrated in FIG. 9, the embodiment illustrated in FIG. 9 does not apply a conductive wall member for mounting each conductive electromagnetic shielding member 500, 500 ″ on a circuit board, but the conductive electromagnetic shielding member. There is a difference that the contact is closely followed by the surface curvature of the circuit board.

That is, the conductive electromagnetic shielding members 500 and 500 ″ may be mounted by attaching the conductive electromagnetic shielding members in close contact with each other according to the surface curvature of the electrical components 212 and 232 provided on one surface of the circuit board. have. Since each of the conductive electromagnetic shielding members 500 and 500 ″ includes an anisotropic conductive adhesive layer and may be manufactured in a sheet form, the conductive electromagnetic shielding members 500 and 500 ″ may be adhered to each other according to the surface curvature of each circuit board.

In addition, the insulating member 600, 600 ″ in the form of a film may also be brought into close contact with the surface shape, and the respective conductive electromagnetic shielding members may be provided through openings 610 and 610 ″ formed in the respective insulating member. 500 and 500 ″ may be electrically connected.

That is, the first and second conductive electromagnetic shielding members 500 and 500 ″ are attached to the first and second circuit boards 210 and 230, respectively, and then the first and second insulating members 600 are respectively disposed outside thereof. , 600 '' may be attached, and each of the insulating members has openings 610 and 610 '', and the first and second conductive electromagnetic shielding members 500, 500 '') can be electrically connected.

In the embodiment shown in FIG. 9, a first circuit board and a second circuit board are stacked and an intermediate conductive electromagnetic shielding member 500 ′ is further provided between the first circuit board and the second circuit board.

In addition, a connection protrusion 510 'is formed on one surface of the intermediate conductive electromagnetic shielding member 500' disposed at the center, and a mounting groove 520 'is formed on the other surface, and then a conductive connector 700 is formed in the mounting groove 520'. ), One circuit board of both circuit boards may be grounded through the other circuit board.

Of course, the mounting groove for mounting the conductive connector 700 may be omitted, a method in which connecting projections are formed on both sides may be used.

The embodiment shown in Fig. 9B shows a case where each circuit board constituting the circuit portion is not in a corresponding shape. That is, the second circuit board to the sub-circuit board may not have a shape in which electrical components protrude from the surface. Accordingly, the second conductive electromagnetic shielding member may maintain a flat state without needing to be adsorbed according to the surface shape of the second circuit board.

Accordingly, the insulating member attached to the intermediate conductive electromagnetic shielding member 500 and the second circuit board 230 may be in surface contact in a planar state.

Even in this case, an opening is formed in the second insulating member 600 ″, and a connecting protrusion 510 ′ is formed on the surface of the intermediate conductive electromagnetic shielding member 500 ′, thereby forming the second and intermediate conductive electromagnetic shielding member 500. '', 500 ') can be electrically connected.

That is, since the electromagnetic wave generated in each circuit board is independently shielded and insulated, and a separate conductive electromagnetic shielding member is provided therebetween, one circuit board can be grounded through the other circuit board. Since the stacking structure can be simplified, the thickness of the circuit unit can be made slim, thereby making the portable terminal slim.

Although not shown in FIG. 9, since a separate heat dissipation member may obtain a thickness gain according to the slimming of the electromagnetic shielding structure, the heat dissipation performance may be improved by applying to various positions in consideration of the heat generation amount of each circuit board.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims. . It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

100: portable terminal
200: circuit part
400: conductive wall member
500: conductive electromagnetic shielding member

Claims (20)

A first circuit board;
A second circuit board;
A conductive electromagnetic shielding member provided between the first circuit board and the second circuit board; And,
And at least one conductive wall member for fixing a lower surface of the edge of the conductive electromagnetic shielding member to any one of the first circuit board and the second circuit board. The method of claim 1,
And the area of the conductive electromagnetic shielding member corresponds to the area of the first circuit board having the larger area among the first circuit board and the second circuit board. The method of claim 2,
A plurality of conductive wall members are spaced apart from each other, and a bottom surface thereof is bonded to a first circuit board having a larger area among the first circuit board and the second circuit board. Portable terminal, characterized in that attached to the upper surface. The method of claim 3,
The conductive wall member includes a metal plate on a lower surface and a conductive foam on the metal plate, and the conductive wall member is joined by a welding method along an insulating member of the first circuit board. The method of claim 3,
And a height of the conductive wall member is higher than a height of components mounted on the first circuit board. The method of claim 2,
A portable terminal, characterized in that an auxiliary conductive electromagnetic shielding member is provided between the lower surface of the second circuit board and the conductive electromagnetic shielding member. The method according to claim 6,
A portable terminal, characterized in that the auxiliary insulating member provided with at least one opening for exposing the auxiliary conductive electromagnetic shielding member is provided on the lower surface of the auxiliary conductive electromagnetic shielding member. The method according to claim 6,
And a connecting protrusion protruding from the upper surface of the conductive electromagnetic shielding member so as to be electrically connected to the auxiliary conductive electromagnetic shielding member through an opening of the auxiliary insulating member. The method according to claim 6,
A portable terminal, characterized in that a conductive connector is provided on the upper surface of the conductive electromagnetic shielding member to be electrically connected to the auxiliary conductive electromagnetic shielding member through the opening. 10. The method of claim 9,
A portable terminal, characterized in that a seating groove for mounting the conductive connector is provided on the upper surface of the conductive electromagnetic shielding member. The method of claim 1,
Portable terminal, characterized in that the insulating member is further provided on the lower surface of the conductive shielding member. The method of claim 11,
And the insulating member insulates an area other than a junction between the conductive electromagnetic shielding member and the conductive wall member. The method of claim 1,
And a heat dissipation member is further provided between the first circuit board and the conductive electromagnetic shielding member. The method of claim 1,
The conductive electromagnetic shielding member is a portable terminal, characterized in that it comprises an anisotropic conductive adhesive layer. 7. The method according to claim 1 or 6,
The conductive electromagnetic shielding member or the auxiliary conductive electromagnetic shielding member is a portable terminal, characterized in that it comprises a thin layer or coating of copper (CU), nickel (Ni), gold (Au). A first circuit part comprising a first circuit board, a first conductive electromagnetic shielding member attached to one surface of the first circuit board, and a first insulating member having at least one opening through which the first conductive electromagnetic shielding member is exposed. ;
A second circuit part including a second circuit board, a second conductive electromagnetic shielding member attached to one surface of the second circuit board, and a second insulating member having at least one opening through which the second conductive electromagnetic shielding member is exposed; ; And,
And an intermediate conductive electromagnetic shielding member disposed between the first insulating member of the first circuit part and the second insulating member of the second circuit part. 17. The method of claim 16,
The upper surface of the intermediate conductive electromagnetic shielding member is characterized in that the portable projection is provided with a protruding connecting projection to be electrically connected to the first or second conductive electromagnetic shielding member through the opening of the first or second insulating member terminal. 17. The method of claim 16,
Electrically between the first or second conductive electromagnetic shielding member and the intermediate conductive electromagnetic shielding member through an opening of the first or second insulating member between the intermediate conductive electromagnetic shielding member and the first or second insulating member. Portable terminal, characterized in that provided with a conductive connector for connection. 17. The method of claim 16,
The insulating member or the conductive electromagnetic shielding member of the first circuit portion or the second circuit portion is in close contact with the surface curvature of the circuit board. 20. The method of claim 19,
The conductive electromagnetic shielding member is provided with an anisotropic conductive adhesive layer, the portable terminal, characterized in that attached to the circuit board.

Images