KR101618550B1 - Mobile terminal - Google Patents

Abstract

The present invention maximizes the EMI shielding performance of a portable terminal by shortening the distance between a pattern layer for mounting an electronic component of a portable terminal and a frame ground for absorbing EMI and by forming a pattern layer and a cover layer integrally, Disclosed is a portable terminal that reduces time and cost.

EMI cover layer, EMI shielding, metal thin film layer, polyimide

Description

[0001]

The present invention relates to a portable terminal, and more particularly, to a portable terminal that can shield EMI generated in a pattern layer mounted on a portable terminal and can be mounted together with the pattern layer when the pattern layer is mounted.

A portable terminal is a portable device having one or more functions capable of carrying out voice and video communication, capable of inputting and outputting information, and storing data, while being portable. As the functions of the portable terminal have diversified, they have complicated functions such as photographing and photographing, playing music files and video files, receiving games, receiving broadcasts, and wireless internet, and have developed a comprehensive multimedia player, .

On the other hand, the size of the portable terminal is further reduced for convenience of carrying, and the thickness is becoming slimmer. On the other hand, the inside of the portable terminal contains a large number of RF components for processing high frequencies of several GHz to several GHz, and the RF components driven by the high frequency are disposed at a very close distance.

Therefore, the portable terminal needs a technique for shielding EMI generated by electronic components driven by high frequency. Currently, a cover layer is attached to a pattern layer on which electronic components are mounted, and a cover layer is bonded to a frame ground It is solving.

That is, the portable terminal shields EMI by a method in which the pattern layer, the cover layer, and the frame ground are arranged in a row for EMI shielding. The EMI shielding effect decreases as the distance between the point of origin of EMI and the frame ground increases.

Furthermore, a manufacturing method of applying the adhesive material to the pattern layer and then bonding the frame ground and the cover layer by hand is problematic in that the production time and cost of the portable terminal are increased.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a portable terminal that increases EMI shielding effect of a portable terminal by using a pattern layer for mounting electronic components of a portable terminal and a cover layer for shortening a distance between the frame ground.

It is another object of the present invention to provide a portable terminal that forms a pattern layer and a cover layer together.

According to an aspect of the present invention, there is provided a semiconductor device comprising: a pattern layer which is housed in a case and which is mounted on a surface of the pattern layer and which includes a metal thin film layer, And a cover layer connected to the FG (Frame Ground) to shield the EMI.

The present invention maximizes EMI shielding performance of a portable terminal by shortening the distance between a pattern layer for mounting electronic parts of a portable terminal and a frame ground for absorbing EMI.

Further, the present invention reduces the production time and cost of the portable terminal by integrally forming the pattern layer and the cover layer.

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

The portable terminal described in this specification includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation. In addition, suffixes "module" and " part "for the components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

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

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

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

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

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

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

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

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 can be embedded in the mobile terminal 100 or externally. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 117 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology.

A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

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

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

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

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

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

The sensing unit 140 may include a proximity sensor 141. The proximity sensor 141 is capable of detecting an object to be approached or the presence or absence of an object in the vicinity without mechanical contact. The proximity sensor 141 can detect a nearby object by using a change in the alternating magnetic field or a change in the static magnetic field, or a rate of change in capacitance. The proximity sensor 141 may be equipped with two or more sensors according to the configuration.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, an alarm unit 155, and a haptic module 157.

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

Meanwhile, as described above, when the display unit 151 and the touch pad have a mutual layer structure to constitute a touch screen, the display unit 151 can be used as an input device in addition to the output device. If the display unit 151 is configured as a touch screen, it may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside, and can be connected to the internal bus of the portable terminal 100. The touch screen panel keeps a watch on the contact result, and if there is a touch input, sends the corresponding signals to the touch screen panel controller. The touch screen panel controller processes the signals and transmits corresponding data to the control unit 180 so that the controller 180 can know whether or not the touch input has been made and which area of the touch screen has been touched .

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

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

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

The haptic module 157 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 157 is a vibration effect. When the haptic module 157 generates vibration with a haptic effect, the intensity and pattern of the vibration generated by the haptic module 157 can be converted, and the different vibrations can be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 157 may be provided with a function of stimulating by a pin arrangement vertically moving with respect to the contact skin surface, an effect of stimulating air through the injection or suction force of the air through the injection port or the suction port, The effect of stimulation through contact of an electrode (eletrode), the effect of stimulation by electrostatic force, and the effect of reproducing a cold sensation using a device capable of endothermic or exothermic can be generated. The haptic module 157 can be implemented not only to transmit the tactile effect through direct contact but also to feel the tactile effect through the muscular sense of the user's finger or arm. The haptic module 157 may include two or more haptic modules 157 according to the configuration of the portable terminal 100.

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

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

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

The interface unit 170 is a path through which power from the cradle connected when the portable terminal 100 is connected to the external cradle is supplied to the portable terminal 100 or various command signals inputted from the cradle by the user are carried And may be a channel that is transmitted to the terminal 100.

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

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

The mobile terminal 100 having such a configuration can be configured to be operable in a communication system capable of transmitting data through a frame or a packet, including a wired / wireless communication system and a satellite-based communication system. have.

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

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

The state where the first body 100A is disposed in a state of being overlapped with the second body 100B may be referred to as a closed configuration and the first body 100A may be referred to as a second body 100B ) May be referred to as an open configuration.

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

The case constituting the outer appearance of the first body 100A is formed by the first front case 100A-1 and the first rear case 100A-2. Various electronic components are embedded in the space formed by the first front case 100A-1 and the first rear case 100A-2.

The case made up of the first front case 100A-1 and the first rear case 100A-2 is small in size and slim in thickness, so that a pattern layer using a flexible printed circuit board (FPCB) have.

Unlike conventional PCB, flexible circuit board is not broken by external pressure or bending, and it is widely used in small electronic devices because it is thin. When various RF devices operating at a high frequency are arranged on a flexible circuit board, EMI fields can be formed around the flexible circuit board. Electronic components mounted on a flexible circuit board are influenced by the EMI field to change physical and electrical characteristics. A coverlay layer is formed on a flexible circuit board and a frame ground is formed on a coverlay layer in order to reduce the influence of an EMI field generated in various electronic components.

However, when the coverlay layer itself is a non-conductive, non-conductive coverlay layer, the effect of EMI shielding is not significant.

Further, in order to attach the coverlay layer to the flexible circuit board, it is necessary to apply an adhesive to the flexible circuit board or manually attach the coverlay layer on which the adhesive tape is formed to the flexible circuit board.

In the present invention, the flexible circuit board realizes EMI shielding by using a coverlay layer which is weak in the effect of EMI shielding and does not require a separate manual operation. The coverlay layer according to the present invention will be described in detail later.

At least one intermediate case may be additionally disposed between the first front case 100A-1 and the first rear case 100A-2. Such cases may be formed by injection molding of a synthetic resin, or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the first sound output module 153a, the first camera 121a, and the first user input unit 130a are connected to the first body 100A, specifically, the first front case 100A-1. .

The display unit 151 includes a liquid crystal display (LCD), an OLED (Organic Light Emitting Diodes), and the like that visually express information. The display unit 151 may be constructed such that the touch pad is overlapped with the layer structure so that the display unit 151 operates as a touch screen so that information can be input by a user's touch. The first acoustic output module 153a may be implemented in the form of a receiver or a speaker. The first camera 121a may be adapted to photograph an image or a moving image of a user or the like.

Like the first body 100A, the case constituting the outer appearance of the second body 100B is formed by the second front case 100B-1 and the second rear case 100B-2. The second user input unit 130b may be disposed on the front face of the second body 100B, specifically, the second front case 100B-1. Third and fourth user input units 130c and 130d, a microphone 123 and an interface unit 170 are disposed in at least one of the first front case 100B-1 and the second rear case 100B-2 .

The first to fourth user input units 130a, 130b, 130c, and 130d may be collectively referred to as a user input unit 130, and any method may be adopted if the user operates in a tactile manner with a tactile impression have.

For example, the user input unit 130 may be embodied as a dome switch or a touch pad capable of receiving a command or information by a push or touch operation of a user, or may be a wheel, a jog type, a joystick, Or the like.

In a functional aspect, the first user input unit 130a is for inputting commands such as start, end, and scroll, and the second user input unit 130b is for inputting numbers, characters, symbols, . Also, the third and fourth user input units 130c and 130d may operate as a hot-key for activating a special function in the portable terminal 100. [

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

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

3 is a rear perspective view of the portable terminal shown in FIG. 3, a wheel-type fifth user input unit 130e and a second camera 121b may be additionally mounted on the rear surface of the second rear case 100B-2 of the second body 100B, A sixth user input unit 130f may be disposed on a side surface of the second body 100B.

The second camera 121b has a photographing direction substantially opposite to that of the first camera module 121a, and may have pixels different from those of the first camera 121a. For example, the first camera 121a has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and transmit the face to the other party. The second camera 121b photographs a general object and immediately transmits It is preferable to have a high pixel.

A flash 125 and a mirror 126 may be further disposed adjacent to the second camera 121b. The flash 125 illuminates the subject when the subject is photographed by the second camera 121b. The mirror 126 allows the user to illuminate the user's own face or the like when the user intends to take a picture of himself / herself (self-photographing) using the second camera 121b.

A second sound output module (not shown) may be further disposed in the second rear case 100B-2. The second sound output module may implement the stereo function together with the first sound output module 153a, and may be used for talking in the speakerphone mode.

An antenna (not shown) for receiving broadcasting signals may be disposed on one side of the second rear case 100B-2 in addition to an antenna for communication. The antenna may be installed to be drawable from the second body 100B. A part of the slide module 100C that slidably connects the first body 100A and the second body 100B is disposed on the first rear case 100A-2 side of the first body 100A. The other part of the slide module 100C may be disposed on the second front case 100B-1 side of the second body 100B and may not be exposed to the outside as shown in Fig.

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

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

Hereinafter, the EMI cover layer for shielding the electronic components mounted inside the portable terminal having the above-described structure will be described.

4 is a cross-sectional view of an example of an EMI cover layer for protecting a flexible circuit board of a portable terminal.

The coverlay layer is used for EMI shielding of electronic parts mounted on a flexible circuit board and for protecting electronic parts, and is attached to a circuit pattern.

4, the EMI cover layer includes a first protective layer 51, a first adhesive layer 52, a metal thin film layer 53, a second protective layer 54, and a second adhesive layer 55 .

The first passivation layer 51 and the second passivation layer 54 protect the EMI metal foil layer 53, and circuit patterns that are attached to the EMI coverage layer.

The first passivation layer 51 and the second passivation layer 54 should be resistant to heat generated by the electronic component mounted on the circuit pattern. In addition, since the first protective layer 51 is often disposed between a case made of plastic or a metal and a circuit pattern, the first protective layer 51 should be resistant to friction with the case. Therefore, the first protective layer 51 and the second protective layer 54 are made of a material having heat resistance and abrasion resistance. In the present invention, the first protective layer 51 and the second protective layer 54 may be either a polyimide film having excellent heat resistance and abrasion resistance, or a naphthalene-based PEN (polyethylene 2,6-naphthalate) film Can be used.

The metal thin film layer 53 is formed of a conductive material for EMI shielding. The metal thin film layer 53 may be formed by sputtering a metal on the second passivation layer 54, or may be formed of a thin metal tape.

When the metal thin film layer 53 is formed thick, the thickness of the EMI cover layer can be increased, and the ductility of the EMI cover layer itself can be reduced.

On the other hand, the thickness of the metal thin film layer 53 is directly related to the EMI shielding effect. The effect of EMI shielding increases as the thickness of the metal thin film layer 53 increases, and decreases as the thickness of the metal thin film layer 53 decreases. Therefore, it is preferable that the thickness of the metal thin film layer 53 has a thickness in the range of 0.2 탆 to 5 탆.

The first adhesive layer 52 adheres between the first protective layer 51 and the metal foil layer 53 and the second adhesive layer 55 adheres the second protective layer 54 to the circuit pattern. Accordingly, the second adhesive layer 55 may be formed of a liquid adhesive material, an adhesive tape, or a thermally conductive (or electrically conductive) adhesive material.

FIG. 5 conceptually shows the coupling relationship between the EMI coverage layer and the circuit pattern shown in FIG.

Referring to FIG. 5, an EMI cover layer 50 is disposed on the upper side of the pattern layer 60, and a polyimide layer 70 is disposed on the lower side. The pattern layer 60 refers to the layer where the circuit pattern is located. The pattern layer 60 may be a flexible circuit board or a polyepoxy substrate, but is not described separately in the present invention.

The polyimide layer 70 is provided to protect the lower portion of the pattern layer 60 and can be replaced with a PEN series film excellent in heat resistance and abrasion resistance.

The EMI cover layer 50 protects the pattern layer 60, absorbs EMI generated in the pattern layer 60, and guides the absorbed electromagnetic waves to the frame ground of the portable terminal 100. The EMI cover layer 50 is provided with a metal thin film layer 53 in order to efficiently absorb EMI generated in the pattern layer 60.

The EMI coverage layer 50 can be formed to be formed together when forming the pattern layer 60, thereby further increasing the EMI processing capability. When forming the pattern layer 60, when the EMI cover layer 50 is formed together, the EMI cover layer 50 may be connected together with the frame ground disposed in the pattern layer 60. When the EMI cover layer 50 is formed on the pattern layer 60 in a state of being grounded to the frame ground, a cover layer for EMI processing is manually attached to the pattern layer 60, unlike a normal cover layer So that the manufacturing process is simplified and the manufacturing cost is reduced.

In addition, since the metal thin film layer 53 located in the EMI cover layer 50 is located very close to the pattern layer 60, the effect of EMI shielding can be maximized. The EMI shielding characteristics according to the position of the metal thin film layer 53 will be described with reference to FIG.

FIG. 6 conceptually illustrates the structure of a conventional coverlay layer as compared to the EMI coverlay layer 50 of the present invention, and the relationship between a conventional coverlay layer and a pattern layer.

Referring to FIG. 6, a conventional cover layer is composed of a polyimide film or a PEN film, and on one side thereof, an adhesive layer for attaching the pattern layer. The coverlay layer is attached to the pattern layer by hand and is attached to the conductive layer through an adhesive layer to shield the EMI generated in the pattern layer.

One side of the conductive layer is attached to the coverlay layer, the other side is exposed to the outside, and is attached to the coverlay layer through the adhesive layer, so that it is usually implemented as a metal film. Therefore, the thickness of the conductive layer is very thick, unlike the present invention, and it is difficult to maintain a uniform distance from the cover layer. Failure to maintain a uniform spacing distance has the same meaning as an EMI shielding effect is not uniform. Further, the shape of the conductive layer can be easily changed by external pressure or impact, and the deformed shape is not restored.

In Fig. 6, a coverlay layer and an adhesive layer are disposed between the pattern layer and the conductive layer. Therefore, the distance between the pattern layer and the conductive layer is considerably larger than that of the present invention, and a part of EMI generated in the pattern layer is not absorbed by the conductive layer, and affects peripheral electronic components mounted on the pattern layer. Furthermore, since a conventional cover layer requires a human body to be coated with an adhesive material on a pattern layer or a separate adhesive tape, the time required for producing a portable terminal is increased, and a uniform EMI shielding property is ensured I can not.

7 shows another embodiment of an EMI coverage layer according to the present invention.

7, the EMI cover layer 50 according to the present invention may be integrally formed with the pattern layer 60 when forming the pattern layer 60, but may be formed separately from the pattern layer 60 Or may be attached to the pattern layer 60. In addition, the EMI cover layer 50 may not have a frame ground on the pattern layer 60, or it may be necessary to ground other neighboring electronic components.

In the embodiment of FIG. 7, the EMI coverage layer 50 further includes a ground terminal 56 for grounding the neighboring other electronic components or for grounding to neighboring frame grounds.

The ground terminal 56 is electrically connected to the metal thin film layer provided on the EMI cover layer 50. The ground terminal 56 is preferably formed of a solderable metal material and is preferably formed in parallel with the metal thin film layer 53 to prevent the thickness of the portable terminal 100 from increasing. It is preferable that a hole is formed at the center of the ground terminal 56. [ The holes allow the ground terminal 56 to be fastened to the frame ground using screws, without soldering the ground terminal 56.

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

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

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

FIG. 3 is a rear perspective view of the portable terminal shown in FIG. 2,

4 is a cross-sectional view of an example of an EMI cover layer for protecting a flexible circuit board of a portable terminal,

5 is a conceptual view showing a coupling relationship between the EMI cover layer and the circuit pattern shown in FIG. 4,

6 is a diagram schematically illustrating the structure of a conventional cover layer compared with the EMI cover layer of the present invention, and the relationship between a conventional cover layer and a pattern layer, and

7 shows another embodiment of an EMI coverage layer according to the present invention.

Description of the Related Art [0002]

50: EMI cover layer 51: first protective layer

52: first adhesive layer 53: metal thin film layer

54: second protective layer 55: second adhesive layer

Claims (9)

Frame Ground (FG); A pattern layer housed in the case and mounting the electronic component; And And a coverlay layer formed on one surface of the pattern layer and having a metal thin film layer therein and the metal thin film layer being connected to the frame ground to shield the EMI, Wherein the coverlay layer comprises: A first protective layer disposed on the uppermost layer; A first adhesive layer provided between one surface of the metal thin film layer and the first protective layer; A second adhesive layer disposed at the lowermost end; A second protective layer provided between the second adhesive layer and the other surface of the metal thin film layer; And And a terminal electrically connected to the metal thin film layer and formed to be in equilibrium with the metal thin film layer, Wherein the terminal is formed with a hole in a central portion thereof and is connected to the frame ground through a hole in the hole. The method according to claim 1, The metal thin- Wherein the first passivation layer is formed by vacuum-depositing a metal on the second passivation layer. The method according to claim 1, The metal thin- Wherein the thickness of the first electrode is in the range of 0.2 탆 to 5 탆. The method according to claim 1, Wherein the coverlay layer comprises: And is attached to the pattern layer by a conductive adhesive material. delete The method according to claim 1, Wherein the first protective layer and the second protective layer are made of a metal, Polyimide film, and PEN (polyethylene 2,6-naphthalate) film. The method according to claim 1, The metal thin- Wherein the metal film is a metal film. delete delete

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