KR20120022088A - Mobile terminal method for manufacturing mobile terminal - Google Patents

Abstract

PURPOSE: A mobile terminal method for manufacturing a mobile terminal is provided to supply a unique grip while implementing a characterful appearance. CONSTITUTION: A case is formed with a plate member. A case comprises an external side and an inner side. The external side has a certain pattern. The internal side has the internal structure of a terminal. A processing layer is formed in the inner side through a processing unit. A deformation layer is formed by a certain pressure and temperature. A pattern is formed in the external side of the deformation layer.

Description

Mobile terminal and its manufacturing method {MOBILE TERMINAL METHOD FOR MANUFACTURING MOBILE TERMINAL}

Embodiments of the present invention relate to a portable terminal having a three-dimensional pattern formed in the case and a manufacturing method thereof.

As the functions are diversified, the terminal is implemented in the form of a multimedia device having a complex function of, for example, taking pictures or moving pictures, playing music or moving picture files, receiving games and receiving broadcasts have.

The terminal can move It may be divided into a mobile terminal (portable terminal) and a stationary terminal depending on whether or not. A portable terminal is a portable device that is portable and has one or more functions for making voice and video calls, inputting and outputting information, and storing data.

In order to support and increase the function of such a terminal, efforts have been made to improve the structural part and / or the software part of the terminal.

In particular, in the manufacture of a mobile terminal, in order to improve the aesthetics of the appearance and the like, a method of characterizing the appearance of a case or a keymark may be considered.

One embodiment of the present invention is to provide a portable terminal having an appearance different from the conventional. In particular, it is to provide a portable terminal which forms a unique three-dimensional pattern on the outer surface of the terminal case.

In order to achieve the above object of the present invention, the portable terminal according to an embodiment of the present invention is formed of a plate member having a predetermined thickness, and formed to support or cover the outer structure and the internal structure of the terminal is formed a predetermined pattern A case including an inner surface, a processing layer formed by processing means on the inner surface, a modified layer formed by a predetermined pressure or temperature in the process of forming the processing layer, and a pattern formed on the outer surface by the modified layer Contains wealth.

According to an example related to the present invention, the plate member is formed of a metal material.

According to an example related to the present invention, the plate member is formed of only a metal material including a processing layer.

According to an example related to the present invention, the pattern portion is formed to protrude from the outer surface.

According to an example related to the present invention, the processing layer is formed by forming a groove on the inner surface using a laser.

According to an example related to the present invention, the pattern part is thermally deformed in the denatured layer due to processing using a laser, and thus is formed while a part of the outer surface contacting the denatured layer is expanded.

In addition, in order to realize the above object, the present invention, forming a case by molding or pressing, forming the outer surface of the case through surface processing, and processing by using a processing means on the inner surface of the case Disclosed is a method of manufacturing a mobile terminal, comprising forming a layer, forming a modified layer on a plate member by a change in pressure or temperature during processing, and creating a pattern on the outer surface by the modified layer.

The portable terminal according to at least one embodiment of the present invention configured as described above may bring out a unique aesthetic appearance and provide a unique grip.

In addition, depending on the material and thickness of the plate member and the processing conditions, the shape of the pattern portion, the color and the roughness of the tip can be implemented differently to provide a unique terminal case.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2A is a front perspective view of a mobile terminal according to an embodiment of the present invention.
2B is a rear perspective view of a mobile terminal according to an embodiment of the present invention.
3 is a diagram illustrating an inner surface of a case of a mobile terminal according to an embodiment of the present invention.
4 is a view showing the outer surface of the case of FIG.
5 is a cross-sectional view of a portion of the case of FIG. 4.
6a to 6b are actual pictures of the case according to an embodiment of the present invention.
7 is a conceptual diagram illustrating a molding method of a mobile terminal case according to an embodiment of the present invention.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying 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 herein includes a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), an e-book, Navigation, etc. may be included.

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 that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and a 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 not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

The broadcast related information may mean information related to a broadcast channel, a broadcast program, or 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 configured to be suitable for not only the above-described digital broadcasting system but also other broadcasting systems.

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 a wireless signal with 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 according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless internet module 113 refers to a module for wireless internet access and may be embedded or external 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. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for obtaining a location of a mobile terminal, and a representative example thereof is a GPS (Global Position System) 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 may 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 according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into 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. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of 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 detects a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of a user contact, orientation of the mobile terminal, acceleration / deceleration of the mobile terminal, and the like. To generate 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 used to generate an output related to sight, hearing, or tactile sense, and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154. Can be.

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 can be configured to be transparent or light transmissive so that they can be seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. With this structure, the user can see the 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 implementation form 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, for example, a form of 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 may be configured to detect not only the position and area of the touch but also the pressure at the 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 then 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. When the touch screen is capacitive, the touch screen is configured to detect the proximity of the pointer by the change of the electric field according to the proximity of the pointer. 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 proximity touch is performed by the pointer on the touch screen refers to a position where the pointer is perpendicular to the touch screen when the pointer is in proximity proximity.

The proximity sensor detects a proximity touch and a proximity touch pattern (for example, a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, and a proximity touch movement state). Information corresponding to the sensed proximity touch operation and 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 may also output a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the mobile terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than a video signal or an 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 151 and 152 may be classified as part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. 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 may be 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 may not only deliver the haptic effect through direct contact, but also may implement the user to feel the haptic effect through a muscle sense such as a finger or an arm. Two or more haptic modules 154 may be provided according to a configuration aspect of the mobile terminal 100.

The memory 160 may store a program for the operation of the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). The memory 160 may store data regarding vibration and sound of various patterns 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), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in connection with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device, receives power, transfers the power to each component inside the mobile terminal 100, or transmits data inside the mobile terminal 100 to an 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 that stores various types of information for authenticating the usage rights of the mobile terminal 100, and includes a user identification module (UIM), a subscriber identify module (SIM), and a universal user authentication module ( 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. Various command signals or power input from the cradle may be operated as signals 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 controller 180 or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on the touch screen as text and an image, 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 include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code can be implemented in 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.

2A is a front perspective view of an example of a mobile terminal or a portable terminal according to the present invention.

The disclosed portable terminal 100 has a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to various structures such as a slide type, a folder type, a swing type, a swivel type, and two or more bodies are coupled to be relatively movable.

The body includes a casing (casing, housing, cover, etc.) that forms an exterior. In this embodiment, the case may be divided into a front case 101 and a rear case 102. Various electronic components are built in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be further disposed between the front case 101 and the rear case 102.

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 101. have.

The display unit 151 occupies most of the main surface of the front case 101. 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 101 and the rear case 102.

The user input unit 130 is manipulated to receive a command for controlling the operation of the portable 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.

FIG. 2B is a rear perspective view of the portable terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 121 ′ may be additionally mounted on the rear 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 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the camera 121 'photographs a general subject and does not transmit it immediately. It is desirable to have a high pixel because there are many. 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 shines light toward 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 '.

The sound output unit 152 'may be further 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. 2A), and may be used to implement a 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.

The terminal body is equipped with a power supply unit 190 for supplying power to the portable terminal 100. The power supply unit 190 may be embedded in the terminal body or may be directly detachable from the outside of the terminal body.

3 to 5 are diagrams of a case of a mobile terminal according to an embodiment of the present invention, FIG. 3 is a diagram illustrating an inner surface of a case of a mobile terminal according to an embodiment of the present invention, and FIG. 4 is FIG. The outer surface of the case is shown as an exaggerated representation of the protruding pattern portion, Figure 5 is a cross-sectional view of a part of the case of FIG.

As shown, the portable terminal includes a case formed of a plate member having an inner surface and an outer surface, a processing layer formed on the case, a modified layer, and a pattern portion.

The case is formed of a plate member formed to have a predetermined shape by molding or press working. The inner surface of the case is formed to support and cover the internal structure so as to protect the internal parts of the terminal from external shocks and the like. The outer surface of the case is provided with a variety of colors and textures, a certain pattern is formed to cause aesthetics to the user.

On the inner surface, a processing layer is formed by a certain processing means. For example, as shown in FIG. 3, when the laser beam is irradiated according to a predetermined pattern of the inner surface of the case, the temperature of the irradiation surface is rapidly increased by a high-density heat source. Done. As a result, grooves are formed on the irradiation surface while the irradiation surface of the plate member is partially melted, and some of the plates are evaporated or solidified on the side of the irradiation surface.

The processing layer may be formed on all or part of the case. For example, when the laser is used as the processing means, the plate member is preferably made of a metal material, and thus, all or part of the case in which the processing layer is formed may be selected as the metal plate member.

The plate member contacting the irradiation surface is provided with a denatured layer that is denatured in volume, mass or color according to a sudden change in pressure or temperature during processing. For example, when the case is formed by forming a thin plate of a metal material, when the inner surface is processed using a laser, the volume of the modified layer in contact with the processed layer increases.

Due to such a modified layer, unlike the original plate member, a pattern part for forming a predetermined pattern is formed on the surface of the case by the modification of the modified layer according to the processing conditions.

As an example, when the inner surface of the metal plate member is processed using a laser as described above, a part of the outer surface protrudes due to the modified layer due to the volume change on the outer surface that is outside the irradiation surface. As shown in the figure, a certain pattern is formed.

As a result, scattering and reflecting are performed according to the irradiation angle of the light to form a different aesthetic, and a unique three-dimensional pattern may be realized due to the pattern part protruding at a predetermined height from the outer surface.

In addition, depending on the material and thickness of the plate member and the processing conditions, the shape of the pattern, the color and the roughness of the tip are implemented differently, so that a unique terminal case can be manufactured.

6a to 6b are actual photographs of the inner surface or the outer surface of the case according to an embodiment of the present invention, which supports the above.

Hereinafter, a method of manufacturing a mobile terminal according to an embodiment of the present invention will be described in detail with reference to FIG. 7.

First, the plate member is selected, and a case having a predetermined shape is formed by molding or pressing. In order to create a unique pattern, the outer surface of the case should be flawless, and light should be well scattered and reflected. Therefore, it is desirable to have a smooth surface by surface processing.

When the inner surface of the case is processed by using the processing means, a processing layer of a predetermined pattern is formed, and a modified layer is formed on the plate member in accordance with a change in pressure or temperature during processing. The patterned portion is formed on the outer surface of the case by the modified layer.

The above-described portable 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 (7)

A case formed of a plate member having a predetermined thickness and including an outer surface on which a predetermined pattern is formed and an inner surface formed to support or cover the internal structure of the terminal;
A processing layer formed on the inner surface by processing means;
A modified layer formed by a predetermined pressure or temperature in the process of forming the processed layer; And
And a pattern portion formed on the outer surface by the modified layer. The method of claim 1,
The plate member is formed of a metal material. The method of claim 1,
The plate member is a portable terminal, characterized in that only a part including the processing layer is formed of a metallic material. The method of claim 1,
The pattern portion is a mobile terminal, characterized in that formed to protrude from the outer surface. The method of claim 1,
The processing layer is formed by forming a groove on the inner surface using a laser. The method of claim 5,
The pattern portion is a portable terminal, characterized in that the thermal deformation occurs in the modified layer due to the processing using a laser, thereby forming a portion of the outer surface in contact with the modified layer is expanded. Forming a case by molding or pressing;
Forming an outer surface of the case through surface processing;
Forming a processing layer on the inner surface of the case by using a processing means, and forming a modified layer on the plate member by a change in pressure or temperature during processing; And
The manufacturing method of a mobile terminal comprising the step of generating a pattern portion on the outer surface by the modified layer.

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