KR101909605B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to an electronic device comprising a support member disposed inside a terminal body, a speaker disposed on the support member and emitting sound to the outside, an electronic element disposed on a surface facing the support member, A circuit board having an opening to expose the speaker, a rib protruding from the supporting member and forming a closed loop surrounding the speaker, at least a part of which is in contact with the circuit board and shields sound propagated to the spaced- Thereby providing a mobile terminal.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal having a speaker.

A mobile terminal is a portable electronic device that is portable and has one or more functions of voice and video call function, information input / output function, and data storing function.

As the functions of the mobile terminal are diversified, the mobile terminal is implemented in the form of a multimedia device having complicated functions such as photographing and photographing of a moving picture, reproduction of a music or video file, and reception of a game and a broadcast.

Various new attempts have been made in terms of hardware or software to implement the complex functions of multimedia devices.

In addition, mobile terminals are regarded as personal items for expressing their individuality, and various design forms are required. The design form also includes structural changes and improvements for the user to more conveniently use the mobile terminal.

In recent years, in order to reduce the thickness of the mobile terminal, a top mounting method has been adopted in which electronic elements mounted on a circuit board are formed on a surface facing the display unit. However, in the case of the top mounting method, it is difficult to mount the speaker, and a problem of the sound is generated.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a mobile terminal having a slim body and improved speaker performance.

According to an aspect of the present invention, there is provided a mobile terminal including a support member, a speaker, a circuit board, and a rib. The support member is disposed inside the terminal main body. The speaker is disposed on the support member and emits sound to the outside. The circuit board forms a space with the support member, an electronic device is disposed on a surface facing the support member, and an opening is formed to expose the speaker. The rib projects from the support member and forms a closed loop surrounding the speaker, at least a part of which contacts the circuit board to block sound propagated to the spaced space.

As an example related to the present invention, a case covering the circuit board and overlapping with the rib forms a resonance space of the speaker.

As an example related to the present invention, the case includes a protrusion protruding from an inner surface of the case facing the circuit board to form a closed loop, and overlapping the rib to form a resonance space.

In one embodiment of the present invention, the cross-section of the region formed by the rib is formed in the same shape as the cross-sectional area formed by the protrusion.

As an example related to the present invention, the rib is formed of a rubber material so as to elastically support the projection.

As an example related to the present invention, there is provided a support member formed on the support member, covering the rib and formed to support the speaker.

As an example related to the present invention, the rib and the support portion are formed of the same material.

As one example related to the present invention, a display unit connected to a flexible printed circuit board connected to the circuit board transmits and receives an output signal. The support member includes an opening through which the flexible printed circuit board passes. The supporting portion overlaps with the flexible printed circuit board and is formed to cover the opening.

As one example related to the present invention, the circuit board covers a part of the region formed by the ribs, and an electronic element is formed on the circuit board which overlaps with the region.

Since the volume can be adjusted by operating the plug, no separate operation keys are required in the terminal body. Therefore, the thickness of the terminal main body can be formed more slimly.

In addition, since the volume can be adjusted by the rotation of the plug, the user can intuitively operate it and is easy to use.

Also, since the plug can be used in parallel with the earphone plug, the volume of the sound emitted from the earphone can be adjusted, so that a separate configuration that is generated in appearance is unnecessary.

In addition, a volume control device separate from the earphone plug can be mounted to adjust the volume of the speaker. Also, the volume control device can be used as a touch pen, an antenna, or the like, thereby simplifying the configuration.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
FIG. 2A is a perspective view of a mobile terminal according to an embodiment of the present invention. FIG.
FIG. 2B is a rear perspective view of the mobile terminal shown in FIG. 2A. FIG.
3 is an exploded view of the mobile terminal of FIG.
Figure 4 is an exploded view of the mobile terminal of Figure 2b.
Figure 5 is a perspective view of the circuit board of Figure 4;
Figure 6 is a perspective view of the circuit board of Figure 3;
FIG. 7 is a cross-sectional view taken along line AA of FIG. 2B. FIG.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

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

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

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives broadcast signals and / or broadcast-related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

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

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

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

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. 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 114 refers to a module for short-range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes an image frame such as a still image or moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

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

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

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

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

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

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

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

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

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

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

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

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

The audio output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

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

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

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

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

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

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

When the mobile terminal 100 is connected to an external cradle, the interface unit 170 may be a path through which power from the cradle is supplied to the mobile terminal 100, or various commands A signal may be a path through which the signal is transmitted to the mobile terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

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

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

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

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

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

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

2A is a perspective view of a mobile terminal according to an embodiment of the present invention. 2B is a rear perspective view of the mobile terminal shown in FIG. 2A.

1, 2A and 2B, the mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, and a swing type in which two or more bodies are coupled to be movable relative to each other. Further, the mobile terminal described herein may be any portable electronic device having a camera and flash, such as a mobile phone, a smart phone, a notebook computer, a digital broadcast terminal, a Personal Digital Assistants ), A PMO (Portable Multimedia Player), and the like.

The terminal body includes a case (which may be referred to as a casing, a housing, a cover, and the like) that forms an appearance. The case may be divided into a front case 201 and a rear case 203 covering a surface opposite to the front case and a frame 202 disposed between the front case 201 and the rear case 203 . Various electronic components are embedded in the space formed between the front case 201 and the rear case 202. The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The terminal body includes a display unit 210, a first sound output unit 211, a signal input unit 230, and a front camera unit 216.

The display unit 210 includes an LCD (Liquid Crystal Display) module, an OLED (Organic Light Emitting Diodes) module, and an e-paper for visually expressing information. The display unit 210 may include touch sensing means for inputting data by a touch method. Hereinafter, the display unit 210 including the touch sensing unit will be referred to as a 'touch screen'. If any one of the touches on the touch screen 210 is touched, the contents corresponding to the touched position are input. 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 sensing means is formed in a translucent manner so that the display portion can be seen, and a structure for enhancing the visibility of the touch screen in a bright place may be included. 2A, the touch screen 210 occupies most of the front surface of the front case 201. [

The first sound output unit 211 may be implemented as a receiver for delivering a call sound to a user's ear or a loud speaker for outputting various alarm sounds or multimedia playback sounds.

The front camera unit 216 processes an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 210. [

The image frame processed by the front camera 216 can be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The front camera 216 may be provided in two or more depending on the use environment.

The signal input unit 230 is operated to receive a command for controlling the operation of the mobile terminal 200 and may include a plurality of input keys. The input keys may also be referred to as a manipulating portion and may be employed in any manner as long as the user has a tactile sense and operates in a tactile manner.

For example, a dome switch or touch screen capable of receiving a command or information by a push or touch operation of a user, a touch pad, or a wheel, a jog type or a joystick for rotating a key . The contents input by the signal input unit 230 can be variously set. For example, to enter start, end, scroll, and the like.

A side key 214, interface units 215 and 225, a sound input unit 213, and a connection unit 330 formed to connect the hand strap are disposed on the side surface of the front case 201.

The side key 214 may be collectively referred to as an operation unit and is capable of receiving a command for controlling the operation of the mobile terminal 200. The side key 214 may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression. The content input by the side key 214 can be variously set. For example, by the side key 214, it is possible to control the image input units 216 and 221, adjust the size of the sound output from the sound output unit 211, or switch the display unit 210 to the touch recognition mode Command can be input.

The sound input unit 213 may be implemented, for example, in the form of a microphone to receive a user's voice, other sounds, and the like.

The interface units 215 and 225 are paths for enabling the mobile terminal 200 related to the present invention to exchange data with an external device. For example, the interface units 215 and 225 may include a connection terminal for connecting to an earphone by wire or wireless, a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port, A wireless LAN port, etc.), or power supply terminals for supplying power to the mobile terminal 200. The interface units 215 and 225 may be implemented in the form of a socket for receiving an external card such as a Subscriber Identification Module (SIM) or a User Identity Module (UIM) or a memory card for storing information.

An antenna for a call or the like may be mounted on the terminal body, and an antenna for receiving a broadcast signal may be additionally disposed. For example, as an antenna for receiving the terrestrial DMB, a monopole antenna capable of being drawn out from the terminal body may be disposed.

A power supply unit 240, a rear camera unit 221, and a second sound output unit 300 are disposed on a rear surface of the terminal body.

The power supply unit 240 supplies power to the mobile terminal 200. The power supply unit 240 may be built in the terminal body or may be detachable from the outside of the terminal body.

A flash 223 is disposed adjacent to the rear camera unit 221. The flash 223 may be disposed adjacent to the rear camera unit 221. The flash 223 illuminates the subject toward the subject when the subject is photographed by the rear camera unit 221.

A mirror 224 may be disposed adjacent the flash 224. The mirror allows the user to illuminate the user's own face or the like in the case where the user intends to photograph (self-photograph) himself / herself by using the rear camera unit 221. [

The rear camera unit 221 may have a photographing direction substantially opposite to that of the front camera unit 216 disposed on the front side and may be a camera having different pixels from the front camera unit 216. [

For example, the front camera unit 216 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 rear camera unit 221 photographs a general subject and immediately transmits It is preferable to have a high pixel. The front and rear camera units 216 and 230 may be installed on the terminal body so as to be rotatable or pop-upable.

The second sound output unit 300 may be formed on the cover 203. The second sound output unit 300 outputs a sound signal. Accordingly, the present invention can be embodied in the form of a loud speaker for outputting various alarm sounds or multimedia reproductions.

 FIG. 3 is an exploded view of the mobile terminal of FIG. 2a, and FIG. 4 is an exploded view of the mobile terminal of FIG. 2b.

Referring to FIGS. 2A, 2B, 3 and 4, the mobile terminal includes a front case 201, a rear case 202, a cover 203 coupled with the rear case 202, 201) and the rear case (202).

A display unit 210 including a window 210a and a display panel 210b, a circuit board 281, a flexible printed circuit board 280, a power supply unit 240 coupled to one surface of the front case 201, And a speaker 310.

The window 210a is coupled to one surface of the front case 201. [ A touch sensor (not shown) may be mounted on the window 210a. The touch sensor is formed to sense a touch input and is made of light transmissive. The touch sensor may be mounted on the front surface of the window 210a and may be configured to convert a change in voltage or the like occurring in a specific portion of the window 210a into an electrical input signal.

The display panel 210b is mounted on the rear surface of the window 210a and is supported by the support member 204. [ The display panel 210b is connected to the flexible printed circuit board 280 to transmit and receive output signals.

In this embodiment, a thin film transistor-liquid crystal display (TFT LCD) is disclosed as an example of the display panel 210b, but the present invention is not limited thereto. For example, the display panel 210a may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), a flexible display, a three-dimensional display .

The rear case 202 supports various electronic components. For example, the rear camera 221, the flash 223, the mirror 224, and the main antenna (not shown) may be disposed on the rear case 202.

The circuit board 281 may be configured as an example of a controller 180 (see FIG. 1) for operating various functions of the mobile terminal. A plurality of circuit boards 204 may be provided, and the functions of the controller 180 may be performed by a combination of the circuit boards 204. A main antenna (not shown) for transmitting and receiving a radio signal for communication may be mounted at one end of the rear case 202.

The speaker 310 includes a sound emitting unit 311 and a vibration unit 312. Although not shown in the drawing, the sound emitting unit 311 may include a magnet and a voice coil. That is, the electric signal is converted into sound by using a magnetic field. The sound emission unit 311 vibrates the vibration unit 312 by contacting the vibration unit 312. The vibration unit 312 may include a diaphragm. The sound emitting portion 311 forms a sound wave to be vibrated, that is, a sound signal. When the sound emitting portion 311 transmits the sound wave to the diaphragm, the diaphragm sounds.

The sound emitting unit 311 is connected to the circuit board 281 and receives the electric signal. The vibration unit 312 is disposed in the rear case 202.

A discharge hole 302 through which sound is emitted is formed on one surface of the rear case 202 facing the cover 203. A speaker hole 301 is formed in the cover 203 coupled to the rear case 202 so as to overlap with the emission hole 302. The sound is emitted to the outside through the speaker hole 301.

The first resonance part 420 is formed on the rear case 202 so as to surround the vibration part 312. The first resonance unit 420 includes a protrusion 421 protruding from the inner surface of the rear case 202 so as to surround the vibration unit 312.

The first resonator 420 is coupled to the support member 204 and forms a predetermined space due to the protrusion 421 so that the vibration of the vibration unit 312 can be resonated.

The circuit board 281 is formed between the rear case 202 and the supporting member 204. The circuit board 281 is formed with various electronic elements, and controls signals of the electronic elements. The vibration unit 312 is electrically connected to the circuit board 281.

Various electronic elements are mounted on one surface of the circuit board 281, and a supporting member 204 is mounted on the one surface. The support member 204 may be made of a metal plate.

A depression 205 may be formed in the support member 204. The flexible printed circuit board 280 may be electrically connected to the circuit board 281 through the depression 205.

The support member 204 is formed with a second resonance part 410 formed on the support member 204. The second resonator 410 includes a rib 411 and a support 412 coupled to the rib 411. The supporting portion 412 includes the same material as the rib 411 and may be integrally formed.

The support portion 412 is formed on the support member 204. The ribs 411 protrude from the support portion 412 and the ribs 411 form a closed loop so as to surround the sound emitting portion 311.

That is, the rib 411 forms the second resonance part 410, and the second resonance part 410 is coupled to the first resonance part 420 of the rear case 202, A resonance region is formed.

Fig. 5 is a perspective view of the circuit board of Fig. 4, and Fig. 6 is a perspective view of the circuit board of Fig.

Referring to FIGS. 5 and 6, an opening 281 'is formed in the circuit board 281. The sound emitting portion 311 is disposed in the opening 281 'and the sound emitting portion 311 is connected to the circuit board 281.

Referring to FIG. 5, a battery mount 282 is formed on the circuit board 281 facing the cover 203. This is an area overlapping with the power supply part 240 and is formed by printing one area of the circuit board 281. A connection terminal electrically connected to the power supply unit 240 is formed on one side of the battery mount unit 282.

Referring to FIG. 6, at least one electronic device (not shown) is mounted on the circuit board 281 facing the support member 204. In order to protect the electronic device (not shown), a shield member 283 is formed on the circuit board 281 on which the electronic device (not shown) is mounted. That is, the shield member 283 is formed with a predetermined height from the circuit board 281, and a space is provided between the circuit board 281 and the support member 204 by the shield member 283 .

As described above, a method of forming electronic elements on the circuit board 282 toward the front surface of the mobile terminal on which the display unit 210 is formed is referred to as a top mounting method. In the top mounting method, an electronic device may be mounted on a surface not contacting the display unit 210, but the battery mounting portion 282 on the side where the battery is mounted. Therefore, the terminal body can be slimly formed because a wider space for realizing the electronic elements can be secured.

Fig. 7 is a cross-sectional view taken along line A-A of Fig. 2B.

Referring to FIGS. 2B and 7, the ribs 411 and the protrusions 421 overlap. The circuit board 281 may be disposed between the rib 411 and the protrusion 421.

At least a part of the ribs 411 is formed in contact with the circuit board 281 so as to prevent the sound from leaking into the spaced spaces. Therefore, it is possible to prevent the negative radiation to be emitted to the space other than the speaker hole 301.

4, the opening 281 'of the circuit board 281 may be formed to be larger than the sound emitting portion 311 and smaller than the region where the rib 411 is formed. Therefore, as the sound is transmitted toward the cover 203 through the opening 281 ', the area of the circuit board 281 that can be used becomes wider, and the internal structure of the terminal body becomes efficient, Can be provided. Further, the space of the second resonance part 411 formed by the rib 411 can be further secured.

The ribs 411 and the protrusions 421 are brought into contact with each other due to the engagement of the support member 204 and the rear case 202. The first and second resonance units 420 and 410 are coupled by the engagement of the rib 411 and the protrusion 421 to form a resonance region of the speaker 300.

That is, the second resonance unit 420 formed using the thickness of the rear case 202 and the second resonance unit 410 formed using the space between the support member 204 and the circuit board 281 ) Are combined to form a resonance region. Therefore, it is possible to secure a wider resonance region and improve the performance of the speaker 300.

 At least one of the ribs 411 and the protrusions 421 may be formed of a rubber material. Accordingly, the ribs 411 and the protrusions 421 are elastically supported, and are in intimate contact with each other. Therefore, it is possible to prevent negative sound to the outside of the resonance region, and the performance of the speaker 300 is improved.

The supporting portion 412 is formed on the depression 205 of the supporting member 204 formed to penetrate the flexible printed circuit board 280 to block the depression 205. Therefore, contaminants or water can be prevented from flowing through the depressed portion 205.

The mobile terminal described above can be applied to not only the configuration and method of the embodiments described above but also all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments It is possible.

Claims (9)

A support member disposed inside the terminal main body;
A speaker disposed on the support member and emitting sound to the outside;
A circuit board forming a space with the support member, an electronic element disposed on a surface facing the support member, and an opening formed to expose the speaker;
And a rib projecting from the support member and blocking a sound propagating to the spaced apart space at least partially in contact with the circuit board, forming a closed loop surrounding the speaker,
A case installed to cover the circuit board includes a protrusion protruding from an inner surface of the case facing the circuit board to form a closed loop and overlapping with the rib to form a resonance space,
Wherein the rib and the protrusion are positioned so as to face each other with the circuit board therebetween. The mobile terminal of claim 1, further comprising a case covering the circuit board and overlapping the rib to form a resonance space of the speaker. delete The mobile terminal according to claim 1, wherein a cross section of the region formed by the rib is formed in the same shape as a cross-sectional area formed by the protrusion. 3. The method of claim 2,
And the rib is formed of a rubber material so as to elastically support the projection. The method according to claim 1,
And a support portion formed on the support member and covering the ribs and formed to support the speaker. The mobile terminal of claim 6, wherein the rib and the support are formed of the same material. 8. The method of claim 7,
And a display unit connected to the flexible printed circuit board connected to the circuit board,
Wherein the support member includes an opening through which the flexible printed circuit board passes,
Wherein the supporting portion overlaps with the flexible printed circuit board and is formed to cover the opening portion. The method according to claim 1,
Wherein the circuit board covers a part of a region formed by the rib,
And an electronic element is formed on the circuit board overlapping with the area.

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