KR20120091722A - Mobile terminal - Google Patents

Abstract

PURPOSE: A mobile terminal is provided to minimize a space for fixing a keypad by including a first fixing unit and a second fixing unit and to minimize a size of a mobile terminal. CONSTITUTION: A keypad(400) is installed to a keypad installation hole(215). A support plate(420) is included in the keypad. A printed circuit board(500) is arranged in a lower side of the keypad. A window(240) is included in a front side of a case(210). The keypad installation hole is formed in one side of the window. A display module is installed in one side of the keypad installation hole.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal having a keypad mounting structure that takes up less space while improving the appearance of the mobile terminal.

Terminals may be divided into mobile / portable terminals and stationary terminals according to their mobility. The mobile terminal may be further classified into a handheld terminal and a vehicle mount terminal according to whether a user can directly carry it.

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. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

In particular, it is possible to consider improving or downsizing the aesthetic appearance of the mobile terminal.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and provides a mobile terminal capable of improving the appearance design and miniaturization.

According to an aspect of the present invention, a mobile terminal is provided with a window having a front surface and a keypad mounting hole formed at one side of the window, and a display module provided at one side of the keypad mounting hole and displaying a screen through the window. And a keypad mounted on the keypad mounting hole and including a support plate, and a printed circuit board disposed below the keypad and mounted with various electronic components, wherein the support plate of the keypad extends perpendicularly to the pushing direction of the button. One side of the first fixing part to be included includes a second fixing part extending in parallel with the pressing direction of the button.

In the mobile terminal, the first fixing part may be fixed to an inner surface of the case, and the second fixing part may be fixed to a side surface of the printed circuit board.

In the mobile terminal, a hole is formed in the first fixing part and the second fixing part, a protrusion is formed on an inner surface of the case and a side surface of the printed circuit board, and the keypad is fixed by combining the hole and the protrusion, respectively. Can be.

The mobile terminal may further include a third fixing part that is bent in a direction in which the display module is installed at one end of the second fixing part and extends in parallel along the display module.

In the mobile terminal, a support part supporting a rear surface of the display module is formed in the case, a hole is formed in the first fixing part and the third fixing part, and a protrusion is formed in the inner surface of the case and the support part. The button module may be fixed by combining the holes and the protrusions, respectively.

According to the mobile terminal of the present invention, the appearance of the mobile terminal can be improved, and the mobile terminal can be miniaturized.

1 is a block diagram showing the functional configuration of the mobile terminal and the organic control system between them according to the present invention.
Figure 2 is a front side perspective view showing an example of the arrangement for each component for implementing the functional configuration of the mobile terminal according to the present invention.
3 is a rear side perspective view showing an example of arrangement for each component for implementing a functional configuration of a mobile terminal according to the present invention;
Figure 4 is an exploded perspective view of a mobile terminal according to an embodiment of the present invention.
5 shows a keypad according to a first embodiment of the present invention;
FIG. 6 is a sectional view taken along the AA direction of FIG. 2 and showing the case where the keypad of FIG. 5 is employed;
7 shows a keypad according to a second embodiment of the present invention;
FIG. 8 is a sectional view taken along line AA in FIG. 2, showing the case where the keypad of FIG. 7 is employed;

Hereinafter, a mobile terminal and a manufacturing method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, different embodiments are given the same or similar reference numerals for the same or similar configurations, and the description is replaced with the first description.

As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. 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 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 readily apparent to those skilled in the art that the configuration according to the embodiments described herein may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

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

The mobile terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. The components shown in FIG. 1 are not essential, so that 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 a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a previously generated broadcast signal and / or broadcast related information and transmits the same to a terminal. 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, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 may include, for example, Digital Multimedia Broadcasting-Terrestrial (DMB-T), Digital Multimedia Broadcasting-Satellite (DMB-S), Media Forward Link Only (MediaFLO), and Digital Video Broadcast (DVB-H). Digital broadcast signals can be received using digital broadcasting systems such as Handheld and Integrated Services Digital Broadcast-Terrestrial (ISDB-T). 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. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

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, the A / V input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video call mode or the photographing mode. The processed image frame 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 the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

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 may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. 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 a call mode, the mobile terminal displays a user interface (UI) or a graphic user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a photographing mode, the mobile terminal 100 displays photographed and / or received images, a UI, and a GUI.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). and at least one of 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 configured as a light transmissive structure. 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 one another, and may be disposed on different surfaces, respectively.

When the display unit 151 and a sensor for detecting a touch operation (hereinafter, referred to as a touch sensor) form a mutual layer structure (hereinafter referred to as a touch screen), the display unit 151 may be configured in addition to an output device. 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 pressure applied to a specific portion of the display unit 151 or 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. As a result, the controller 180 can know which area of the display unit 151 is touched.

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 an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Proximity sensors have a longer life and higher utilization than touch sensors.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation 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 allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." 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 sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 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 vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to vibration, the haptic module 154 may be configured to provide a pin array that vertically moves with respect to the contact skin surface, a jetting force or suction force of air through an injection or inlet port, grazing to the skin surface, contact of an electrode, electrostatic force, and the like. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. Two or more haptic modules 154 may be provided according to configuration aspects 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 relating to various patterns of vibration and sound output when a touch input on the touch screen is performed.

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.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered 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, perform related control and processing for voice calls, data communications, video calls, and the like. The controller 180 may include a multimedia module 181 for playing multimedia. 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 an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

Various embodiments described herein may be implemented 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 processors, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, May be implemented by the control unit 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. The software code may be stored in the memory 160 and executed by the controller 180.

2 is a front perspective view of an example of a mobile terminal or a mobile terminal 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 210 and a rear case 220. Various electronic components are embedded in the space formed between the front case 210 and the rear case 220. At least one intermediate case may be further disposed between the front case 210 and the rear case 220.

The cases may be formed by injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the audio output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, and the interface 170 may be disposed in the terminal body, mainly the front case 210. have.

The display unit 151 occupies most of the main surface of the front case 210. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on side surfaces of the front case 210 and the rear case 220.

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 manipulation units 131 and 132 may also be collectively referred to as manipulating portions, and may be employed in any manner as long as the user operates the tactile manner with a tactile feeling.

Content input by the first or second manipulation units 131 and 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 illustrated in FIG. 2.

Referring to FIG. 3, a camera 121 ′ may be additionally mounted on the rear of the terminal body, that is, the rear case 220. The camera 121 ′ has a photographing direction substantially opposite to that of the camera 121 (see FIG. 2), 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 further 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 see his / her own face or the like when photographing (self-photographing) the user 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 a stereo function together with the sound output unit 152 (see FIG. 2), and may be used to implement a speakerphone mode during a call.

In addition to the antenna for talking and the like, a broadcast signal reception antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can 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 embedded in the terminal body or may be directly detachable from the outside of the terminal body.

The rear case 220 may additionally be equipped with a touch pad 135 for sensing a touch. The touch pad 135 may also be of a light transmission type like the display unit 151. [ In this case, if the display unit 151 is configured to output time information on both sides, the time information can be recognized through the touch pad 135 as well. The information output on both sides may be all controlled by the touch pad 135. [ Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may also be disposed on the rear case 220.

The touch pad 135 operates in association with the display unit 151 of the front case 210. The touch pad 135 may be disposed parallel to the rear of the display unit 151. The touch pad 135 may have a size equal to or smaller than that of the display unit 151.

4 is an exploded perspective view of a mobile terminal according to an embodiment of the present invention.

Referring to the drawings, a mobile terminal according to an embodiment of the present invention includes a case 210, a display module 300, a keypad 400, and a printed circuit board 500.

The case 210 forms the appearance of the mobile terminal and is provided with a window 240 on the front surface and a keypad installation hole 215 on one side of the window 240.

The display module 300 is installed at one side of the keypad installation hole 215 and is configured to display a screen through the window 240. The display module 300 does not cover the keypad mounting hole 215.

The keypad 400 is mounted to the keypad mounting hole 215 and includes a button portion 410 and a support plate 420.

At this time, the support plate 420 has a first fixing part 421 whose one end extends in parallel with the longitudinal direction of the display module 300 and a second fixing part extending in parallel with the thickness direction of the display module 300. 422.

In detail, the first fixing part 421 and the second fixing part 422 are not symmetrical with each other, and the first fixing part 421 is formed of the button part 410 of the keypad 400. The second fixing part 422 extends in a direction perpendicular to the pressing direction, and the second fixing part 422 extends in a direction parallel to the pressing direction of the button part 410 of the keypad 400.

Therefore, the horizontal length of the second fixing part 422 is formed to be shorter than the horizontal length of the first fixing part 421.

In addition, the fixing position of the second fixing part 422 is fixed to the wall surface of the display module 300 or the side of the printed circuit board, and the fixing position of the third fixing part 423 is the case 210. It is fixed to the inner surface of the.

The printed circuit board 500 is disposed under the keypad 400 and is mounted with a dome switch 510 and various electronic components. The first fixing part 421 may be fixed to a side surface of the printed circuit board 500.

The second fixing part 422 may be in contact with at least one of a wall surface of the display module 300 or a side surface of the printed circuit board 500.

According to the fixing structure of the keypad 400 as described above, the keypad 400 is located close to the display module 300 to improve the design of the appearance of the mobile terminal and to maximize the space required for fixing to the keypad 400. It is possible to reduce the size of the mobile terminal.

Next, the fixing structure of the keypad according to the first embodiment of the present invention will be described in detail with reference to the drawings.

5 is a view showing a keypad according to the first embodiment of the present invention, Figure 6 is a cross-sectional view of the A-A direction of Figure 2 showing the fixing structure of the keypad when the keypad of Figure 5 is employed.

Referring to the drawings, in the present embodiment, support parts 211 and 212 are formed on the case 210 to surround and support the side and the rear surface of the display module 300, and the display module 300 is seated on the support parts 211 and 212. .

In addition, the button portion 410 of the keypad 400 protrudes to the outside of the mobile terminal through the keypad installation hole 215 formed in the case 210 and the support plate 420 of the keypad 400 is fixed to both sides, respectively. do.

At this time, the first fixing part 421 is fixed to the inner surface of the case 210 and the second fixing part 422 is fixed to the side of the printed circuit board 500.

In detail, holes 421a and 422a are formed in the first fixing part 421 and the second fixing part 422, and protrusions are formed on an inner surface of the case 210 and a side surface of the printed circuit board 500. 210a and 500a are formed, and the keypad 400 is fixed by combining the holes 421a and 422a and the protrusions 210a and 500a, respectively.

In addition, instead of forming the protrusion 500a on the side surface of the printed circuit board 500, it is also possible to form the protrusion on the side surfaces of the support parts 211 and 212 to fix the first fixing part 421.

In the above description, holes are formed in the first fixing part 421 and the second fixing part 422, and the inner surface of the case 210 and the side surface 211 of the printed circuit board 500 or the support part are formed. Although the protrusion is described as being formed, the hole and the protrusion may be interchanged and applied.

7 is a view showing a keypad according to a second embodiment of the present invention, Figure 8 is a cross-sectional view of the A-A direction of Figure 2 showing the fixing structure of the keypad when the keypad of Figure 7 is employed.

Referring to the drawings, the keypad of the present embodiment may be bent at one end of the second fixing part 422 in addition to the first embodiment, and the third fixing part 423 extending parallel to the longitudinal direction of the display module 300. ) Is further formed.

In detail, the third fixing part 423 is bent in the direction in which the display module 300 is installed and formed in parallel with the rear surface of the display module 300.

When the third fixing part 423 is formed as described above, it is possible to fix the keypad 400 more stably by using the bent surface.

In this case, holes 421a and 423a are formed in the first fixing part 421 and the third fixing part 423, and protrusions 210a and 212a are formed in the inner surface of the case 210 and the bottom surface 212 of the support part. ) Is formed and the keypad 400 is fixed by combining the holes 421a and 423a and the protrusions 210a and 212a, respectively.

In addition, a hole is formed in the second fixing part 422, and a protrusion is formed in the side surface 211 of the printed circuit board 500 or the support part 211 so that the hole and the protrusion are coupled to each other so that the keypad 400 is connected. The first fixing part 421, the second fixing part 422, and the third fixing part 423 may be fixed respectively, or a combination thereof may be selected.

Also in this embodiment, holes are formed in the first fixing part 421 to the third fixing part 423, the inner surface of the case 210, the side surfaces of the printed circuit board 500, and the supporting parts 211 and 212. Although the protrusion is formed in the above description, the hole and the protrusion may be interchanged with each other.

The above-described mobile terminal and its manufacturing method are not limited to the configuration and method of the above-described embodiments, but the embodiments may be selectively or partially all of the embodiments so that various modifications may be made. It may be configured in combination.

Claims (5)

A case having a window provided at a front surface thereof and a keypad mounting hole formed at one side of the window;
A display module installed at one side of the keypad installation hole and configured to display a screen through the window;
A keypad mounted on the keypad mounting hole and including a support plate; And
A printed circuit board disposed below the keypad and mounted with various electronic components.
Including,
The support plate of the keypad includes a first fixing part of which one side extends perpendicular to the pressing direction of the button and a second fixing part of which the other side extends parallel to the pressing direction of the button. The method of claim 1,
And the first fixing part is fixed to an inner surface of the case, and the second fixing part is fixed to a side surface of the printed circuit board. The method of claim 2,
A hole is formed in the first fixing part and the second fixing part, and a protrusion is formed on an inner surface of the case and a side surface of the printed circuit board, and the keypad is fixed by combining the hole and the protrusion, respectively. Mobile terminal. The method of claim 1,
And a third fixing part which is bent in a direction in which the display module is installed at one end of the second fixing part and extends in parallel along the display module. The method of claim 4, wherein
A support part supporting a rear surface of the display module is formed in the case, a hole is formed in the first fixing part and the third fixing part, and a protrusion is formed in the inner surface of the case and the support part, and the hole and the protrusion part are formed. The keypad is fixed by combining each of the mobile terminal.

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