KR20160009914A - Mobile terminal - Google Patents

Abstract

A mobile terminal is provided. The mobile terminal comprises: a case including an electric filed portion having electronic components embedded therein; a display unit coupled to the front surface of the case; a frame coupled to the case by supporting the rear surface of the display unit and including metal materials; a main substrate mounted onto the case; a driver IC mounted onto the main substrate; a shield can having an opening formed at a position corresponding to the driver IC and covering components mounted on the main substrate; a conductive tape combining the frame and the shield can; and a thermal diffusion sheet which is in contact with the driver IC and whose end portion comes into contact with the inner surface of the shield can, wherein the main substrate and the thermal diffusion sheet are spaced apart from each other. The mobile terminal prevents a shock from being transmitted to an application processor when a shock is applied, while increasing heat dissipation efficiency of heat generated in the application processor of the mobile terminal.

Description

[0001] MOBILE TERMINAL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mobile terminal that transmits heat emitted from a driving chip to a frame to improve heat dissipation performance.

A terminal can be divided into a mobile terminal (mobile / portable terminal) and a stationary terminal according to whether the terminal can be moved. The mobile terminal can be divided into a handheld terminal and a vehicle mounted terminal according to whether the user can directly carry the mobile terminal.

The functions of mobile terminals are diversified. For example, there are data and voice communication, photographing and video shooting through a camera, voice recording, music file playback through a speaker system, and outputting an image or video on a display unit. Some terminals are equipped with an electronic game play function or a multimedia player function. In particular, modern mobile terminals can receive multicast signals that provide visual content such as broadcast and video or television programs.

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

As the function of the mobile terminal is diversified, heat is generated in the driving chip that drives the mobile terminal, and a large amount of heat is generated in an application processor (AP), which is a main driving chip. There is a problem that the performance of the driving chip is deteriorated when a lot of heat is generated in the driving chip. In order to secure the performance of the driving chip, the problem of dissipating the heat generated in the driving chip is an important problem.

An object of the present invention is to provide a heat dissipation structure that prevents a shock from being transmitted to an application processor when an impact is applied to a mobile terminal, while increasing the thermal efficiency of heat generated in a driving chip of a mobile terminal, in particular, an application processor.

A case including an electrical part in which an electronic part is mounted; A display unit coupled to a front surface of the case; A frame supporting the back surface of the display unit and coupled to the case and including a metal material; A main board mounted on the case; A driving chip mounted on the main board; A shield can cover the component mounted on the main board, the opening being formed at a position corresponding to the driving chip; A conductive tape coupling between the frame and the shield can; And a thermal diffusion sheet which is in contact with the drive chip and has an end portion in contact with an inner surface of the shield can; Wherein the main frame and the thermal diffusion sheet are spaced apart from each other.

The frame may include a recessed portion where the portion facing the driving chip is recessed.

The portion of the conductive tape corresponding to the opening of the shield can can be opened.

The thermal deformation sheet may include graphite.

A case including a full-length portion in which an electronic component is mounted; A display unit coupled to a front surface of the case; A frame supporting the back surface of the display unit and coupled to the case, the frame including a metal material; A main board mounted on the case; A driving chip mounted on the main board; A shield can cover the component mounted on the main board, the opening being formed at a position corresponding to the driving chip; A conductive tape coupling between the frame and the shield can; And a thermally conductive elastic member interposed between the frame and the driving chip.

One side of the thermally conductive elastic member may include a hole facing the frame and the other side facing the driving chip and passing through one surface and the other surface.

The thermally conductive elastic member may be made of a porous material.

And a thermal diffusion sheet interposed between the thermally conductive elastic member and the driving chip.

The thermally conductive elastic member covers the opening portion of the shield can, and the end portion can be interposed between the shield can and the frame.

One side of the thermally conductive elastic member faces the frame, the other side faces the driving chip, and at least one surface of the one side and the other side may have irregularities.

The thermally conductive elastic member may include a silicon material.

Wherein the thermally conductive elastic member includes a plurality of thermally conductive elastic balls interposed between the frame and the driving chip, the thermally conductive elastic ball including a spherical member made of an elastic material and a metal mesh surrounding the spherical member .

The thermally conductive elastic member is formed by applying a thermal grease, and a spacing space may be formed between the thermal grease.

A case including an electrical part in which an electronic part is mounted; A display unit coupled to a front surface of the case; A frame supporting the back surface of the display unit and coupled to the case and including a metal material; A main board mounted on the case; A driving chip mounted on the main board; A support wall protruding from the frame at a position corresponding to the periphery of the drive chip, the support wall extending to the main board; And a thermally conductive elastic member interposed between the frame and the driving chip.

According to at least one embodiment of the present invention, it is possible to provide a mobile terminal that increases heat radiation efficiency of heat generated in an application processor of a mobile terminal and prevents an impact from being transmitted to an application processor when an impact is applied.

In addition, the grounding state between the main board and the frame is prevented from being disturbed by the heat radiation member, thereby solving the problem that the performance of the antenna is deteriorated.

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

1 is a block diagram illustrating a mobile terminal according to the present invention.
2 and 3 are conceptual diagrams showing an example of a mobile terminal related to the present invention from different directions.
4 is an exploded perspective view showing a first embodiment of a mobile terminal according to the present invention.
5 is a cross-sectional view showing a first embodiment of a mobile terminal according to the present invention.
6 is a cross-sectional view showing a second embodiment of the mobile terminal of the present invention.
7 is a plan view showing various embodiments of the thermally conductive elastic member of Fig.
8 is a cross-sectional view showing a third embodiment of the mobile terminal of the present invention.
9 is a sectional view showing a fourth embodiment of the mobile terminal of the present invention.
10 is a sectional view showing a fifth embodiment of the mobile terminal of the present invention.
11 is a cross-sectional view showing a sixth embodiment of the mobile terminal of the present invention.
12 is a plan view showing various embodiments of the thermally conductive elastic member of Fig.
13 is a cross-sectional view showing a seventh embodiment of the mobile terminal of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role. In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be blurred. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are only used for the purpose of distinguishing one component from another

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation device, a slate PC A tablet PC, an ultrabook, a wearable device such as a smartwatch, a smart glass, and a head mounted display (HMD). have.

However, it will be appreciated by those skilled in the art that the configuration according to the embodiments described herein may be applied to fixed terminals such as a digital TV, a desktop computer, a digital signage, and the like, will be.

FIG. 1 is a block diagram for explaining an application processor 186 'related to the present invention, and FIGS. 2 and 3 are conceptual diagrams showing an example of an application processor 186' related to the present invention from different directions.

The application processor 186 '100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, A power supply unit 190, and the like. It should be noted that the components shown in FIG. A are not necessary to implement the application processor 186 ', so that the application processor 186' described herein may include more or fewer components than the components listed above Lt; / RTI >

The wireless communication unit 110 may be connected between the application processor 186 '100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 ) And an external server. ≪ RTI ID = 0.0 > [0002] < / RTI > In addition, the wireless communication unit 110 may include one or more modules for connecting the mobile terminal 100 to one or more networks.

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

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

The sensing unit 140 may include at least one sensor for sensing at least one of information in the mobile terminal, surrounding environment information surrounding the mobile terminal, and user information. For example, the sensing unit 140 may include a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, A G-sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a finger scan sensor, an ultrasonic sensor, A microphone 226, a battery gauge, an environmental sensor (for example, a barometer, a hygrometer, a thermometer, a radiation detection sensor, A thermal sensor, a gas sensor, etc.), a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification can combine and utilize information sensed by at least two of the sensors.

The output unit 150 includes at least one of a display unit 151, an acoustic output unit 152, a haptic tip module 153, and a light output unit 154 to generate an output related to visual, auditory, can do. The display unit 151 may have a mutual layer structure with the touch sensor or may be integrally formed to realize a touch screen. The touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user and may provide an output interface between the mobile terminal 100 and a user.

The interface unit 160 serves as a path to various types of external devices connected to the mobile terminal 100. The interface unit 160 is connected to a device having a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, And may include at least one of a port, an audio I / O port, a video I / O port, and an earphone port. In the mobile terminal 100, corresponding to the connection of the external device to the interface unit 160, it is possible to perform appropriate control related to the connected external device.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs or applications running on the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Also, at least a part of these application programs may exist on the mobile terminal 100 from the time of shipment for the basic functions (e.g., telephone call receiving function, message receiving function, and calling function) of the mobile terminal 100. Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and may be operated by the control unit 180 to perform the operation (or function) of the mobile terminal.

In addition to the operations related to the application program, the control unit 180 typically controls the overall operation of the mobile terminal 100. The control unit 180 may process or process signals, data, information, and the like input or output through the above-mentioned components, or may drive an application program stored in the memory 170 to provide or process appropriate information or functions to the user.

In addition, the controller 180 may control at least some of the components illustrated in FIG. 1 to drive an application program stored in the memory 170. FIG. In addition, the controller 180 may operate at least two of the components included in the mobile terminal 100 in combination with each other for driving the application program.

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

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

Referring to FIGS. 2 and 3, the disclosed mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto and can be applied to various structures such as a folder type, a flip type, a slide type, a swing type, and a swivel type in which a watch type, a clip type, a glass type or two or more bodies are relatively movably coupled . Will be related to the particular type of application processor 186 ', but a description of the particular type of application processor 186' may be generally applied to other types of application processors 186 '.

Here, the terminal body can be understood as a concept of referring to the mobile terminal 100 as at least one aggregate.

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

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

In some cases, electronic components may also be mounted on the rear case 102. Electronic parts that can be mounted on the rear case 102 include detachable batteries, an identification module, a memory card, and the like. In this case, a rear cover 103 for covering the mounted electronic components can be detachably coupled to the rear case 102. Therefore, when the rear cover 103 is separated from the rear case 102, the electronic parts mounted on the rear case 102 are exposed to the outside.

As shown, when the rear cover 103 is coupled to the rear case 102, a side portion of the rear case 102 can be exposed. In some cases, the rear case 102 may be completely covered by the rear cover 103 during the engagement. Meanwhile, the rear cover 103 may be provided with an opening for exposing the camera 121b and the sound output unit 152b to the outside.

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

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

Meanwhile, the mobile terminal 100 may include a waterproof unit (not shown) for preventing water from penetrating into the terminal body. For example, the waterproof portion is provided between the window 151a and the front case 101, between the front case 101 and the rear case 102, or between the rear case 102 and the rear cover 103, And a waterproof member for sealing the inside space of the oven.

The mobile terminal 100 is provided with a display unit 151, first and second sound output units 152a and 152b, a proximity sensor 141, an illuminance sensor 142, a light output unit 154, Cameras 121a and 121b, first and second operation units 123a and 123b, a microphone 122, an interface unit 160, and the like.

2 and 3, a display unit 151, a first sound output unit 152a, a proximity sensor 141, an illuminance sensor 142, an optical output unit 154, A camera 121a and a first operation unit 123a are arranged on the rear side of the terminal body and a second operation unit 123b, a microphone 122 and an interface unit 160 are disposed on a side surface of the terminal body, The second sound output unit 152b and the second camera 121b will be described as an example.

However, these configurations are not limited to this arrangement. These configurations may be excluded or replaced as needed, or placed on different planes. For example, the first operation unit 123a may not be provided on the front surface of the terminal body, and the second sound output unit 152b may be provided on the side surface of the terminal body rather than the rear surface of the terminal body.

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

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

In addition, the display unit 151 may exist in two or more depending on the embodiment of the mobile terminal 100. In this case, the mobile terminal 100 may be provided with a plurality of display portions spaced apart from each other or disposed integrally with one another, or may be disposed on different surfaces, respectively.

The display unit 151 may include a touch sensor that senses a touch with respect to the display unit 151 so that a control command can be received by a touch method. When a touch is made to the display unit 151, the touch sensor senses the touch, and the control unit 180 generates a control command corresponding to the touch based on the touch. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like.

The touch sensor may be a film having a touch pattern and disposed between the window 151a and a display (not shown) on the rear surface of the window 151a, or may be a metal wire . Alternatively, the touch sensor may be formed integrally with the display. For example, the touch sensor may be disposed on a substrate of the display or inside the display.

In this way, the display unit 151 can form a touch screen together with the touch sensor. In this case, the touch screen can function as the user input unit 123 (see FIG. 1). In some cases, the touch screen may replace at least some functions of the first operation unit 123a.

The first sound output unit 152a may be implemented as a receiver for transmitting a call sound to a user's ear and the second sound output unit 152b may be implemented as a loud speaker for outputting various alarm sounds or multimedia playback sounds. ). ≪ / RTI >

The window 151a of the display unit 151 may be provided with an acoustic hole for emitting the sound generated from the first acoustic output unit 152a. However, the present invention is not limited to this, and the sound may be configured to be emitted along an assembly gap (for example, a gap between the window 151a and the front case 101) between the structures. In this case, the appearance of the mobile terminal 100 can be made more simple because the hole formed independently for the apparent acoustic output is hidden or hidden.

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

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

The first and second operation units 123a and 123b may be collectively referred to as a manipulating portion as an example of a user input unit 123 operated to receive a command for controlling the operation of the mobile terminal 100 have. The first and second operation units 123a and 123b can be employed in any manner as long as the user is in a tactile manner such as touch, push, scroll, or the like. In addition, the first and second operation units 123a and 123b may be employed in a manner that the user operates the apparatus without touching the user through a proximity touch, a hovering touch, or the like.

In this figure, the first operation unit 123a is a touch key, but the present invention is not limited thereto. For example, the first operation unit 123a may be a mechanical key, or a combination of a touch key and a touch key.

The contents input by the first and second operation units 123a and 123b can be variously set. For example, the first operation unit 123a receives a command such as a menu, a home key, a cancellation, a search, and the like, and the second operation unit 123b receives a command from the first or second sound output unit 152a or 152b The size of the sound, and the change of the display unit 151 to the touch recognition mode.

On the other hand, a rear input unit (not shown) may be provided on the rear surface of the terminal body as another example of the user input unit 123. The rear input unit is operated to receive a command for controlling the operation of the mobile terminal 100, and input contents may be variously set. For example, commands such as power on / off, start, end, scrolling, and the like, the size adjustment of the sound output from the first and second sound output units 152a and 152b, And the like can be inputted. The rear input unit may be implemented as a touch input, a push input, or a combination thereof.

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

When a rear input unit is provided on the rear surface of the terminal body, a new type of user interface using the rear input unit can be realized. When the first operation unit 123a is not disposed on the front surface of the terminal body in place of at least a part of the functions of the first operation unit 123a provided on the front surface of the terminal body, The display unit 151 may be configured as a larger screen.

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

The microphone 122 is configured to receive the user's voice, other sounds, and the like. The microphone 122 may be provided at a plurality of locations to receive stereophonic sound.

The interface unit 160 is a path through which the mobile terminal 100 can be connected to an external device. For example, the interface unit 160 may include a connection terminal for connection with another device (for example, an earphone or an external speaker), a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port A wireless LAN port, or the like), or a power supply terminal for supplying power to the mobile terminal 100. The interface unit 160 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

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

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

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

And a second sound output unit 152b may be additionally disposed in the terminal body. The second sound output unit 152b may implement a stereo function together with the first sound output unit 152a and may be used for implementing a speakerphone mode in a call.

The terminal body may be provided with at least one antenna for wireless communication. The antenna may be embedded in the terminal body or formed in the case. For example, an antenna constituting a part of the broadcast receiving module 111 (see FIG. 1) can be configured to be able to be drawn out from the terminal body. Alternatively, the antenna may be formed in a film type and attached to the inner surface of the rear cover 103, or a case including a conductive material may be configured to function as an antenna.

The terminal body is provided with a power supply unit 190 (see FIG. 1) for supplying power to the mobile terminal 100. The power supply unit 190 may include a battery 191 built in the terminal body or detachable from the outside of the terminal body.

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

The rear cover 103 is coupled to the rear case 102 so as to cover the battery 191 to restrict the release of the battery 191 and to protect the battery 191 from external impact and foreign matter . When the battery 191 is detachably attached to the terminal body, the rear cover 103 may be detachably coupled to the rear case 102.

The mobile terminal 100 may be provided with an accessory that protects the appearance or supports or expands the function of the mobile terminal 100. [ One example of such an accessory is a cover or pouch that covers or accommodates at least one side of the mobile terminal 100. [ The cover or pouch may be configured to interlock with the display unit 151 to expand the function of the mobile terminal 100. Another example of an accessory is a touch pen for supplementing or extending a touch input to the touch screen.

4 is an exploded perspective view showing a first embodiment of the application processor 186 'according to the present invention and includes a window glass 109, a display portion 151, a frame 105, a main substrate 185, a driving chip 186, a shield can 220, a conductive tape 210, a battery 191, and a rear case 102 are shown.

The display unit 151 is located on the front surface of the mobile terminal 100. Recently, the touch sensor is stacked on the display unit 151 to perform an input function in addition to an output function.

The window glass 109 protects the display unit 151 from the front and laminates the window glass 109 and the display unit 151 by stacking a touch sensor on the window glass 109. When the window glass 109 and the display unit 151 are stacked, And the like.

The main board 185 may be mounted with electronic components to implement various functions of the application processor 186 '. The electronic component controls the operation of the display unit 151 of the application processor 186 'and processes the external input inputted from the touch sensor, the user input unit 123 and various sensors, and controls the camera 121, the speaker 152b, And the application processor 186 'such as the receiver 152a.

The application processor 186 '(AP: application processor) is a non-memory semiconductor used not only in a terminal but also in a digital TV, and functions as a central processing unit (CPU) of a general computer. . The application processor 186 'is the most technology-intensive part among the driving chips 186 mounted on the mobile terminal, and it drives the OS and applications necessary for driving the mobile terminal, and functions to control various system devices / Chip-on-chip.

In recent years, a high-performance application processor 186 'is required for performing large-capacity tasks such as games, Internet operations, video and music appreciation, and the application processor 186' 186 'is very important for maintaining the performance of the application processor 186'.

The shield can 220 can be used to protect the driving chip 186 mounted on the surface of the main board 185 and to laminate the main board 185 and mount other components. The shield can 220 is made of a metal material and has a roof shape covering the upper surface of each drive chip 186, and a box shape composed of a wall positioned between the roof and the main board 185.

The shield can 220 is generally spaced apart from the drive chip 186 to prevent direct impact from being transmitted to the drive chip 186. However, since the application processor 186 'is thicker than the other drive chips 186, if the shield can 220 is formed to match the thickness of the application processor 186', the height of the shield can 220 is increased, There is a problem in that the thickness of the film is increased.

In order to solve the above problem, it is possible to prevent the thickness from increasing by drilling the hole 221 at a position corresponding to the application processor 186 'of the shield can 220.

The display unit 151 may be seated on the frame 105 to cover the front of the display unit 151 with the front case as shown in FIG. 2. In order to reduce the size of the bezel, The front case is omitted and the window glass 109 on the front covers the front surface of the display unit 151 and the display unit 151 can be seated on the frame 105. [

The camera 121 or the receiver 152 mounted on the front case and the microphone 122 can be mounted in a space between the frame 105 and the rear case 102. [ The frame 105 may comprise a metal such as magnesium and has the advantage of providing sufficient rigidity when containing a metal.

The frame 105 has a flat surface on the front surface in order to support the display portion 151 and the back surface of the frame 105 may be provided with concavities and convexities on which the components are seated as shown in Fig. have.

Further, the frame 105 includes a metal and contacts with an electronic component such as an antenna to serve as a ground. It may be grounded in direct contact with the electronic component or may be grounded through the main board 185. The frame 105 is brought into contact with the shield can 220 mounted on the main board 185 so that parts such as an antenna can be connected to the main can board 185 through the shield can 220 Can be grounded.

A conductive tape 225 may be interposed between the frame 105 and the shield can 220 to maintain contact with the shield can 220. The conductive tape 225 includes a conductor capable of carrying electricity, and is a thin-shaped member having an adhesive force, and physically electrically couples the shield can 220 and the frame 105. The opening 226 can be partially formed in the conductive tape 225 in accordance with the shape of the opening 221 formed in the shield can 220.

The frame 105 includes a large area of metal material, has a high thermal conductivity, and has a large area, so that heat can be diffused through the frame 105. The shield can 220 is made of a metal material and is in contact with the frame 105 so that heat can be diffused through the shield can 220 have.

The rear case 102 is coupled to the rear surface of the frame 105 and forms a full-length portion between the frame 105 and the rear case 102. Components such as the camera 121, the receiver 152, and the microphone 122 are mounted on the entire circuit board as well as the battery 191 and the main board 185.

5 is a cross-sectional view showing a first embodiment of the application processor 186 'of the present invention. The frame 105 is disposed so as to be in contact with the upper surface of the shield can 220 coupled to the main board 185 and is electrically connected between the shield can 220 and the frame 105, It is possible to use a conductive tape 225 having an adhesive property.

Since the application processor 186 'of the drive chip 186 is thicker than the drive chip 186 having a different thickness, an opening is formed in the shield can 220 at a portion corresponding to the application processor 186' 220 may be configured to include walls of a height equal to or less than the thickness of the application processor 186 '. If the wall height of the shield can 220 is reduced, the thickness of the application processor 186 'can be reduced.

However, even if the application processor 186 'is exposed by the opening of the shield can 220, the external impact applied to the application processor 186' is directly transmitted to the application processor 186 ' 5, a groove 105 'may be formed in a portion of the frame 105 corresponding to the application processor 186' so that the upper surface of the frame 105 and the upper surface of the application processor 186 'are spaced apart.

The spacing between the grooves 105 'and the application processor 186' may remain spaced apart and the impact applied to the frame 105 via the resilient member, such as a sponge, It can be prevented from being transmitted to the base station.

However, it is difficult to diffuse the heat generated by the application processor 186 'through the frame 105 by keeping the space between the frame 105 and the application processor 186' apart or interposing a material having low thermal conductivity such as a sponge There is a problem that the performance of the application processor 186 'deteriorates.

Or the thermal conductivity is higher than that of the sponge, but when the silicone having a small elasticity is used, there is a problem that the shock is transmitted. In addition, if the distance between the application processor 186 'and the metal frame 105 becomes smaller than the design, the frame 105 and the shield can 220 are shielded by the silicon interposed between the frame 105 and the application processor 186' There is a problem in that there is a problem.

The bonding strength between the shield can 220 and the frame 105 is poor because the adhesive force of the conductive tape 225 is not strong even when the frame 105 and the shield can 220 are coupled by the conductive tape 225 . In this case, there is a problem that the grounding state, which is performed through the shield can 220, becomes poor, thereby deteriorating the performance of the antenna and the electronic component.

The thermal diffusion sheet 210 may be used to effectively dissipate the heat generated by the application processor 186 ', while protecting the application processor 186' from impact. The thermal diffusion sheet 210 includes a material having a high thermal conductivity such as graphite.

Graphite is graphite which is processed by heating and has higher thermal conductivity than metallic materials such as gold and silver which have high thermal conductivity. In order to form the thermal diffusion sheet 210, the graphite is processed into a sheet form, and the graphite itself is difficult to fix in a sheet state, and is fixed using an adhesive or a film.

The thermal diffusion sheet 210 is laminated on the upper surface of the application processor 186 'and disposed so that the thermal diffusion sheet 210 is in contact with the inner periphery of the opening of the shield can 220. The heat generated in the application processor 186 'may be transmitted to the shield can 220 through the thermal diffusion sheet 210 and transferred from the shield can 220 to the frame 105 to diffuse and emit heat.

The shield can 220 and the frame 105 are spaced apart from each other while preventing an impact from being transmitted to the application processor 186 'since the upper surface of the application processor 186' It is possible to prevent deterioration of performance of an antenna and the like. 5A, the conductive tape 225 may cover the upper surface of the application processor 186 ', open a position corresponding to the opening of the shield can 220 as shown in FIG. 5B, The application processor 186 'may be exposed.

6 is a cross-sectional view showing a second embodiment of the application processor 186 'of the present invention, in which a thermally conductive elastic member 230 is interposed between the application processor 186' and the frame 105. Fig. Examples of the thermally conductive elastic member 230 include silicone, which is elastic and has a higher thermal conductivity than the sponge.

However, since the elasticity of the sponge is not so high as compared with that of the sponge, the impact applied to the frame 105 can be transmitted as described above, and the problem of the gap between the frame 105 and the shield can 220 may occur In this embodiment, in order to increase the elastic force of the thermally conductive elastic member 230, a hole 231 penetrating through one surface and the other surface is formed.

The hole 231 may provide a space for deformation of the thermally conductive elastic member 230 so that the elastic force of the thermally conductive elastic member 230 may be increased. That is, when a force is applied in the direction of the application processor 186 'located on the other side of the frame 105 positioned on one side, the thermally conductive elastic member 230 is widened in the left and right direction in the drawing, Direction) to absorb the shock.

FIG. 7 is a plan view showing various embodiments of the thermally conductive elastic member 230 of FIG. 6. The shape of the hole 231 formed in the thermally conductive elastic member 230 can be variously modified. However, as the area of the hole 231 formed in the thermally conductive elastic member 230 is wider, there is a problem that the efficiency of heat conduction between the frame 105 and the application processor 186 'is lowered. The thermal diffusion efficiency can be increased between the application processor 186 'and the thermally conductive elastic member 230 through the thermal diffusion sheet 210 such as a graphite sheet.

8 is a cross-sectional view showing a third embodiment of the application processor 186 'of the present invention in which a thermally conductive elastic member 230 extends between the shield can 220 and the frame 105. In this case, even if the impact applied to the frame 105 is transmitted to the application processor 186 'through the thermally conductive elastic member 230, the shock can be dissipated to the shield can 220.

When the application processor 186 'is lower than the upper surface of the shield can 220, the central portion of the thermally conductive elastic member 230 may be spaced apart from the frame 105, The heat can be maintained in a state of being in contact with the heat sink 105 and the heat can be diffused through the shield can 220, thereby preventing the thermal diffusion performance from deteriorating. In addition, thermal diffusion performance can be improved by interposing the thermal diffusion sheet 210 between the application processor 186 'and the thermally conductive elastic member 230 as shown in FIG. 8 (b).

9 is a cross-sectional view illustrating a fourth embodiment of the application processor 186 'according to the present invention. The protrusions 232 are formed on at least one surface of one side or the other side of the thermally conductive elastic member 230, The impact can be absorbed in the thermally conductive elastic member 230 because the elastic member 230 provides a space that can be deformed.

10 is a cross-sectional view showing a fifth embodiment of the application processor 186 'of the present invention. As a thermally conductive elastic member 230, a thermal conductive property is secured by using a sponge ball and a metal mesh surrounding the sponge ball The sponge can absorb the shock transmitted from the frame 105 to the application processor 186 '.

Fig. 11 is a cross-sectional view showing a sixth embodiment of the application processor 186 'of the present invention, and Fig. 12 is a plan view showing various embodiments of the thermally conductive elastic member 230 of Fig. The thermal grease 250 may be applied between the application processor 186 'and the frame 105 to transfer the heat of the application processor 186' to the frame 105. Thermal grease 250 is a fluid material that transfers heat. It has oil-like properties and increases the thermal conductivity of the contacts. Thermal compound, thermal grease, and heat transfer paste (HTP).

Since the thermal grease 250 is fluid, the impact applied from the frame 105 to the application processor 186 'is not transmitted as it is in the separated state. 12, and when the upper surface of the application processor 186 'is entirely applied, it may leak sideways, so that the thermal grease 250 is partly left and partially coated so that the thermal grease 250 can spread.

13 is a cross-sectional view showing a seventh embodiment of the application processor 186 'of the present invention. The present embodiment includes a support wall 106 protruding from the frame 105 in the direction of the main board 185 so that the shield can 220 is omitted and the main board 185 and the frame 105 are directly connected to each other .

The support wall 106 supports the spacing between the main board 185 and the frame 105 so that the force applied to the frame 105 is not transmitted to the application processor 186 ' The application processor 186'may not be directly impacted by the thermally conductive elastic member 230 between the frame 105 and the application processor 186 ' The main board 185 is grounded via the antenna 181, thereby eliminating the problem of poor performance of the antenna. In addition, since the heat is discharged through the thermally conductive elastic member 230, the heat generation problem of the application processor 186 'can be solved.

In accordance with at least one embodiment of the present invention, the thermal efficiency of the heat generated by the application processor 186 'of the application processor 186' is increased while preventing the impact to be transmitted to the application processor 186 ' The application processor 186 '

Also, the grounding state between the main board 185 and the frame 105 can be prevented from being disturbed by the heat radiation member, and the problem of deterioration of antenna performance can be solved.

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

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

100: mobile terminal 105: frame
102: rear case 106: support wall
110: wireless communication unit 120: input unit
140: sensing unit 150: output unit
170: memory 160:
180: control unit 185: main substrate
186: drive chip 186 ': application processor
190: Power supply unit 191: Battery
210: thermal diffusion sheet 220: shielded can
225: conductive tape 230: thermally conductive elastic member
250: Thermal grease

Claims (14)

A case including an electrical part in which an electronic part is mounted;
A display unit coupled to a front surface of the case;
A frame supporting the back surface of the display unit and coupled to the case and including a metal material;
A main board mounted on the case;
A driving chip mounted on the main board;
A shield can cover the component mounted on the main board, the opening being formed at a position corresponding to the driving chip;
A conductive tape coupling between the frame and the shield can; And
A heat dissipation sheet in contact with the driving chip and an end portion in contact with an inner surface of the shield can;
Wherein the main frame and the thermal diffusion sheet are spaced apart from each other. The method according to claim 1,
The frame
And a recess portion in which a portion facing the driving chip is recessed. The method according to claim 1,
Wherein a portion of the conductive tape corresponding to an opening of the shield can is opened. The method according to claim 1,
Wherein the thermal deformation sheet comprises graphite. A case including an electrical part in which an electronic part is mounted;
A display unit coupled to a front surface of the case;
A frame supporting the back surface of the display unit and coupled to the case, the frame including a metal material;
A main board mounted on the case;
A driving chip mounted on the main board;
A shield can cover the component mounted on the main board, the opening being formed at a position corresponding to the driving chip;
A conductive tape coupling between the frame and the shield can; And
And a thermally conductive elastic member interposed between the frame and the driving chip. 5. The method of claim 4,
Wherein one side of the thermally conductive elastic member faces the frame and the other side faces the driving chip and includes a hole penetrating one surface and the other surface. 6. The method of claim 5,
Wherein the thermally conductive elastic member is made of a porous material. 6. The method of claim 5,
And a thermal diffusion sheet interposed between the thermally conductive elastic member and the driving chip. 6. The method of claim 5,
Wherein the thermally conductive elastic member covers the opening portion of the shield can, and the end portion is interposed between the shield can and the frame. 6. The method of claim 5,
Wherein one surface of the thermally conductive elastic member faces the frame and the other surface faces the driving chip, and at least one surface of the one surface or the other surface is provided with concavities and convexities. 6. The method of claim 5,
Wherein the thermally conductive elastic member comprises a silicon material. 6. The method of claim 5,
Wherein the thermally conductive elastic member has a plurality of thermally conductive elastic balls interposed between the frame and the driving chip
Wherein the thermally conductive elastic ball comprises a spherical member made of an elastic material and a metal mesh surrounding the spherical member. 6. The method of claim 5,
Wherein the thermally conductive elastic member comprises:
Wherein a thermal gap is formed by applying a thermal grease, and a space is formed between the thermal greases. A case including an electrical part in which an electronic part is mounted;
A display unit coupled to a front surface of the case;
A frame supporting the back surface of the display unit and coupled to the case and including a metal material;
A main board mounted on the case;
A driving chip mounted on the main board;
A support wall protruding from the frame at a position corresponding to the periphery of the drive chip, the support wall extending to the main board; And
And a thermally conductive elastic member interposed between the frame and the driving chip.

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