KR101709531B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to a printed circuit board (PCB), a printed circuit board disposed inside the terminal body and equipped with electronic parts, a vibration motor disposed on one surface of the printed circuit board to generate vibration, And a damper mounted between the vibration motors and formed to reduce vibrations of the vibration motors.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal equipped with a vibration motor.

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. As the above attempts, a method of further improving the functions of the hardware and the like can be considered.

The call reception function is one of the functions necessary for the call of the mobile terminal. The vibration function used for incoming calls generally drives a small vibration motor to transmit vibration power to the terminal body so that the mobile terminal can vibrate. As one of the hardware improvement methods, it can be considered for a mobile terminal having a simpler assembly structure of a vibration motor.

One object of the present invention is to propose a mobile terminal in which a vibration motor can be mounted on a printed circuit board through a simpler structure.

Another object of the present invention is to propose a mobile terminal having a structure that can be vibrated in an arbitrary direction upon vibration of a vibration motor and can increase the magnitude of vibration.

According to an aspect of the present invention, there is provided a mobile terminal including a terminal body, a printed circuit board disposed inside the terminal body and having electronic components mounted thereon, And a damper mounted between the printed circuit board and the vibration motor and configured to reduce vibration of the vibration motor.

According to one example of the present invention, the mobile terminal further comprises a metal sheet disposed between the damper and the printed circuit board, wherein the damper is made of a conductive material so that the vibration motor can be electrically connected to the printed circuit board .

According to another embodiment of the present invention, the mobile terminal further includes a coupling layer formed by solidifying metal between the metal sheet and the printed circuit board so that the vibration motor can be mounted on the surface of the printed circuit board do.

According to another embodiment of the present invention, the dampers are formed in a plurality of dampers, and the dampers have different densities.

According to another embodiment of the present invention, the mobile terminal further includes a cushion disposed between the vibration motor and the terminal body so as to reduce noise generated when the vibration motor vibrates.

According to the present invention having the above-described structure, since the vibration motor on which the damper is mounted is mounted on the surface of the printed circuit board, a separate wire, guide can, or other structure is not required. Therefore, the space occupied by the vibration motor can be minimized, the rate and the airflow can be lowered, and the problem of contact failure such as disconnection which may occur when the wire is coupled can be overcome.

Further, according to the present invention, since the damper is formed, it is possible to vibrate in any direction, and the vibration amount due to the difference in damping can be increased by diversifying the shape and density of the damper.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
FIG. 2 is a perspective view of an example of a mobile terminal according to the present invention. FIG.
3 is a rear perspective view of the mobile terminal shown in FIG. 2;
FIG. 4 is a conceptual view showing a vibration motor disposed inside the terminal body shown in FIG. 2. FIG.
5 is a conceptual view showing the vibration motor, the damper, and the metal sheet shown in Fig.

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

The mobile terminal described in this specification includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), an e-book, Navigation, and the like.

1 is a block diagram of a mobile terminal 100 according to an embodiment of the present invention.

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

Hereinafter, the components will be described in order.

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

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

The broadcast channel may include a satellite channel and a terrestrial channel. 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 And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). 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 image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

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

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

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a 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 a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

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

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

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

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

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

The 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.

2 is a perspective view of an example of a mobile terminal 100 according to the present invention.

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

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

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 display unit 151, the sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

The display unit 151 occupies most of the main surface of the front case 101. The camera 121 and the proximity sensor 141 are arranged in a region adjacent to one end of the both ends of the display unit 151 and the user input unit 131 and the microphone 122 . The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The user input unit 130 is operated to receive a command for controlling the operation of the mobile terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

3 is a rear perspective view of the mobile terminal 100 shown in Fig.

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

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

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

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

In addition to the antenna for a call or the like, a broadcast signal reception antenna 124 may be additionally disposed on the side of the terminal body. The antenna 124 constituting a part of the broadcast receiving module 111 (see FIG. 1) may be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the mobile terminal 100 is mounted on the terminal body. The power supply unit 190 may be built in the terminal body or may be detachable from the outside of the terminal body.

Hereinafter, the mobile terminal 100 having a simpler assembling structure of the vibration motor will be described in more detail.

FIGS. 4 and 5 are conceptual diagrams showing a vibration motor 200 disposed inside the terminal body shown in FIG. 2, showing a vibration motor 200 mounted on the surface of the printed circuit board 181.

4 and 5, a printed circuit board 181 on which various electronic components are mounted is disposed inside the terminal body. The vibration motor 200 is mounted on the surface of the printed circuit board 181 and is configured to generate vibration under the control of the controller 180. The vibration motor 200 may be disposed on at least one end of the terminal body, for example.

Depending on the shape of the vibration motor 200, a coin type or a linear type having a thin thickness or a long type may be used. The vibration motor 200 may be a method of obtaining mechanical vibration by rotating a rotor having an unbalanced mass.

A damper 210 is mounted between the printed circuit board 181 and the vibration motor 200. The damper 210 is configured to reduce impact, vibration, noise, and the like that are generated when the vibration motor 200 vibrates. More specifically, the damper 210 absorbs impact transmitted to the printed circuit board 181 during vibration of the vibration motor 200 to minimize the problem of contact failure, and the vibration motor 200 is mounted on the printed circuit board 181 Reduce the noise that can occur between them when connected directly.

The damper 210 may be formed of a silicone or rubber material capable of elastic deformation. In addition, the damper 210 may have conductivity to electrically connect the vibration motor 200 and the printed circuit board 181. For example, the vibration of the vibration motor 200 can be alleviated by adding a material having conductivity to silicon or rubber, and the vibration motor 200 can be electrically connected to the printed circuit board 181.

The damper 210 may be a plurality of dampers. The damper 210 may be disposed at each of the positive and negative poles for applying power to the vibration motor 200, for example. The damper 210 may have different shapes and densities.

The eccentric amount, the eccentric mass, and the number of rotations of driving are determined beforehand in the design of the motor in order to generate the vibration by rotating the eccentric rotor, so that the vibration amount (vibration power) is fixed Therefore, the magnitude of the generated vibration is constant. Further, the rotational direction becomes a plane on which the rotor rotates.

However, when the damper 210 is formed, vibration may occur in any direction other than the rotational plane of the rotor when the vibration motor 200 vibrates due to the difference in shape or density. That is, the amount of vibration can be increased due to the difference in damping of the damper 210 during vibration. Accordingly, the user can more effectively recognize whether or not the mobile terminal 100 vibrates.

A metal sheet 220 may further be disposed between the damper 210 and the printed circuit board 181. The metal sheet 220 allows the vibration motor 200 including the damper 210 to be easily mounted on the printed circuit board 181. The metal sheet 220 may be made of, for example, copper or silver.

The vibration motor 200 may be mounted on the printed circuit board 181 by an SMT (Surface Mount Technology) process. Specifically, lead is patterned on the printed circuit board 181, and the vibration motor 200 is placed on the lead using the mounting equipment. Thereafter, the vibration motor 200 is passed through the reflow oven to electrically connect the vibration motor 200 to the printed circuit board 181 by soldering.

The vibration motor 200 is mounted on the surface of the printed circuit board 181 so that the bonding layer 230 formed by melting the patterned lead after solidification of the patterned lead is formed between the metal sheet 220 and the printed circuit board 181 have.

According to the above structure, since the vibration motor 200 on which the damper 210 is mounted is mounted on the surface of the printed circuit board 181, the structure of a separate wire, guide can, etc. is not required. Therefore, the mounting height of the vibration motor 200 can be reduced, and thus the space occupied by the vibration motor 200 can be minimized. In addition, the SMT process can lower the rate and the airflow, and the problem of contact failure such as disconnection which may occur in wire bonding can be overcome.

A cushion 240 having elasticity may be disposed between the vibration motor 200 and the terminal body. The cushion 240 has an effect of reducing noise that may be generated when the vibration motor 200 vibrates. The cushion 240 may be, for example, a sponge, a spring, or the damper 210 disposed on the opposite side of the surface on which the vibration motor 200 is mounted to the printed circuit board 181. [

The mobile terminal described above is not limited to the configuration and method of the embodiments described above, but the embodiments may be configured by selectively combining all or a part of the embodiments so that various modifications may be made.

Claims (5)

Terminal body;
A printed circuit board disposed inside the terminal body and adapted to mount electronic components;
A vibration motor disposed on one surface of the printed circuit board and configured to generate vibration;
A damper mounted between the printed circuit board and the vibration motor and configured to reduce vibration of the vibration motor; And
And a metal sheet disposed between the damper and the printed circuit board,
Wherein the damper is formed to include a conductive material so that the vibration motor is electrically connected to the printed circuit board. delete The method according to claim 1,
Further comprising a bonding layer formed by solidifying metal between the metal sheet and the printed circuit board so that the vibration motor can be mounted on the surface of the printed circuit board. The method of claim 3,
The damper is formed in a plurality of dampers,
Wherein each of the dampers has a different density. The method of claim 3,
Further comprising a cushion disposed between the vibration motor and the terminal body so as to reduce noise generated when the vibration motor vibrates.

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