KR101846963B1 - Mobile terminal and method of fabricating case thereof - Google Patents

Abstract

According to the present invention, there is provided a mobile terminal having a case having an appearance, wherein the case comprises a base made of metal, an ultraviolet curing layer disposed to cover the base and made of a material that is cured by ultraviolet (UV) And a bonding layer disposed between the base and the ultraviolet ray hardening layer and formed of a synthetic resin and having one side and the other side bonded to the base and the ultraviolet ray hardening layer so that the ultraviolet ray hardening layer can be realized on the base, And a case manufacturing method of the mobile terminal.

Description

[0001] MOBILE TERMINAL AND METHOD OF FABRICATING CASE THEREOF [0002]

The present invention relates to a mobile terminal having a case and a case manufacturing method of the mobile terminal.

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.

Mobile terminals are regarded as personal items for expressing their individuality, and various design forms are required. The design form includes structural changes and improvements that improve the appearance of the mobile terminal.

The mobile terminal has a case constituting an appearance. The case has an aesthetic function beyond a simple function of protecting the mobile terminal from the surrounding environment. As an example of the structural change and improvement, a mobile terminal having a case with a more colorful feel can be considered.

It is an object of the present invention to propose a case of a mobile terminal and a method of manufacturing the case, which have a structure that makes it possible to apply a surface treatment method which is applied only to a plastic material to a metal material.

Another object of the present invention is to provide a case capable of enhancing the appearance of a mobile terminal and a method of manufacturing the case.

According to an aspect of the present invention, there is provided a mobile terminal including a case having an outer appearance, the case including a base formed of a metal, And one side and the other side of which are disposed between the base and the ultraviolet curing layer and formed of synthetic resin so that the ultraviolet curing layer can be formed on the base, And a bonding layer that is bonded to the ultraviolet curing layer, respectively.

According to an example of the present invention, the case further includes an etch portion formed of a plurality of grooves which are recessed from one surface of the ultraviolet curing layer toward the base, and the plurality of grooves form a specific pattern.

According to another embodiment of the present invention, the groove is formed to be recessed so that the base is exposed to the outside.

According to another embodiment of the present invention, the case further includes a coating layer disposed to cover the groove and made of a light-transmitting material.

According to another embodiment of the present invention, the coating layer may be an oxide film formed by oxidation or corrosion of the surface of the base.

According to another embodiment of the present invention, the coating layer and the ultraviolet curing layer form the same plane.

According to another example of the present invention, the bonding layer is bonded to the base by thermal fusion.

According to another embodiment of the present invention, the bonding layer may be any one of a film layer, a spray layer, and a coating layer formed of PC (PolyCarbonate).

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of: applying a synthetic resin to a surface of a base formed of a metal; and curing an ultraviolet curing layer formed of a material that is cured by ultraviolet A step of etching the surface of the case in a specific pattern and a step of oxidizing and etching the surface of the base to form a coating layer covering the etched portion of the case, .

According to the present invention having the above-described structure, the bonding layer is disposed between the base formed of a metal and the ultraviolet ray hardening layer and is coupled with the base, so that the surface treatment method applied only to a plastic material such as an ultraviolet ray hardening layer is applied to a metal material . Accordingly, a mobile terminal having a more colorful feel can be provided through various surface treatment techniques without limitation depending on the material.

Also, the case can be variously provided with a metallic feel and a plastic feel through a coating layer covering a groove and an etching part having a plurality of grooves forming a specific pattern, and a mobile terminal having a more advanced appearance can be provided.

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;
4 is a cross-sectional view of an example of a case as viewed from the side;
5 and 6 are photographs showing a case in which a pattern is implemented through an etching part and a digital printing (DP), respectively.
7 and 8 are a flowchart and a process diagram respectively showing an example of a method of manufacturing a case related to the present invention.

Hereinafter, a method of manufacturing a mobile terminal according to the present invention and a mobile terminal manufactured thereby will be described in detail with reference to the drawings.

In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. The singular expressions include plural expressions unless the context clearly dictates otherwise. The suffix "module " and" part "for the constituent element are given or mixed in consideration of ease of specification, and do not have a meaning or role that is distinguished by itself.

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.

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

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

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 of synthetic resin or may be formed to have a metal material such as stainless steel (STS), aluminum (AL), titanium (Ti) or the like.

The terminal body may include a display unit 151, an audio output unit 152, a camera 121, user input units 130/131 and 132, a microphone 122, and an interface 170.

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 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 input by the first or second operation 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 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. 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 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. 2) and may be used for the implementation of the speakerphone mode in 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 case of the mobile terminal 100 capable of giving a colorful feeling will be described in more detail.

4 and 5. FIG. 4 is a sectional view of an example of the case 200, and FIGS. 5 and 6 are photographs showing a case 200 in which a pattern is implemented through an etching part 240 and a DP (digital printing), respectively.

Referring to FIG. 4 together with FIGS. 2 and 3 above, the case 200 forms the appearance of the terminal body. The case 200 can be divided into a front case 101, a rear case 102 and a battery cover 191. [ 3 shows that the structure of the case 200 of the present invention is applied to the rear case 102 and the battery cover 191. FIG.

The case 200 includes a base 210, an ultraviolet curing layer 220, and a bonding layer 230 disposed therebetween.

The base 210 serves as a base for forming the case 200 and is made of a rigid material having a predetermined thickness so that the outer shape of the case 200 can be maintained. The base 210 may be formed of a metal material such as stainless steel (STS), aluminum (AL), titanium (Ti) or the like.

On one side of the base 210, an ultraviolet curing layer 220 formed of a material that is cured by ultraviolet (UV) irradiation is disposed. Specifically, when ultraviolet rays are irradiated to a polymer including a curable ink, a paint, an adhesive, and the like, a curing reaction instantaneously occurs to form an ultraviolet cured layer 220.

The UV curable layer 220 is disposed to cover the base 210 to protect the base 210 from external environments such as scratches, discoloration, oxidation, and the like. In addition, a variety of colors can be realized through the paints, and a more luxurious appearance can be formed through the glossy process.

The bonding layer 230 is disposed between the base 210 and the ultraviolet curing layer 220. The bonding layer 230 is coupled to the base 210 and the ultraviolet curable layer 220 so that the ultraviolet bonding layer 230 can be formed on the base 210. The bonding layer 230 may be formed of a synthetic resin such as PC (PolyCarbonate), PP (PolyPropylene), PET (PolyEthylene Terephthalate), or the like.

The bonding layer 230 may be any one of a film layer, a spray layer, and a coating layer covering the base 210. When the bonding layer 230 is in the form of a film, the bonding layer 230 may be bonded to the base 210 by thermal fusion. The heat-sealable layer of the bonding layer 230 is formed by melting and solidifying the bonding layer 230.

According to the present invention, the bonding layer 230 is disposed between the base 210 and the ultraviolet curing layer 220 formed of a metal, The surface treatment method which was applied only to the material can be applied to the metal material. Accordingly, the mobile terminal 100 having a more colorful feel can be provided through various surface treatment techniques without limitation depending on the material.

Referring to FIG. 5 together with FIG. 4, the case 200 may further include an etching portion 240 and a coating layer 250 in order to realize a more various presentation and a higher appearance.

The etching portion 240 has a plurality of grooves 241 and 242 which are recessed from one surface of the ultraviolet curing layer 220 toward the base 210. The plurality of grooves 241 and 242 provide aesthetic sensibility to the person who has a specific pattern as a whole.

The groove 241 may be formed to be recessed so that the base 210 covered by the bonding layer 230 and the ultraviolet curing layer 220 is exposed to the outside. In this case, the soft feeling of the plastic of the ultraviolet ray hardening layer 220 forming the surface of the case 200 and the hard feeling of the metal of the base 210 exposed through the groove 241 can be simultaneously realized have.

The coating layer 250 is disposed to cover the grooves 241 and 242, and is made of a light-transmitting material. The coating layer 250 protects the exposed portions of the base 210 from the external environment due to the formation of the grooves 241 and 242. In addition, the coating layer 250 may be embodied in various colors including paints.

The coating layer 250 may be an oxide film formed by anodizing, that is, the surface of the base 210 is oxidized and corroded. The coating layer 250 may be formed by depositing a specific material on the grooves 241 and 242 through vapor deposition (PVD) or physical vapor deposition (PVD), for example.

One side of the coating layer 250 may form the same plane as the surface of the ultraviolet curing layer 220. According to the above structure, the case 200 can have a three-dimensional feel due to the grooves 241 and 242 formed in the case 200 visually while having a tactile sense of flatness.

Referring to FIG. 6 together with FIG. 4, the case 200 may form a specific pattern through DP (Digital Printing) instead of the etching portion 240 and the coating layer 250. In this case, it is possible to form finer and more complex patterns than to form a pattern in the case 200 through etching.

According to the above structure, all the surface treatment methods can be applied to the case 200 regardless of the material of the base 210. In particular, when the base 210 is made of metal, it is possible to coat the ultraviolet ray hardening layer 220, which is difficult to be realized, and the mobile terminal 100 having a more advanced appearance through a variety of directions can be provided.

7 and 8 are a flow chart and a process diagram showing an example of a manufacturing method of the case 200 related to the present invention.

7 and 8, a method of manufacturing a case 200 that forms an outer appearance of a mobile terminal 100 includes the steps of applying a synthetic resin (bonding layer 230) to the surface of a metal base 210, Forming an ultraviolet curing layer 220 on the surface of the case 200, etching the surface of the case 200 in a specific pattern, and forming a coating layer 250 covering the etched portion of the case 200 do.

Specifically, a synthetic resin 230, for example, a polycarbonate (PC) film is disposed on the surface of the base 210 formed of metal. Thereafter, the synthetic resin 230 is bonded to the base 210 by a method of thermal fusion under specific temperature and pressure conditions.

Then, ultraviolet rays are irradiated to a polymer formed on the surface of the synthetic resin 230 to be cured by ultraviolet ray irradiation to form an ultraviolet ray hardening layer 220. Polymers can exhibit a variety of colors, including paints. In addition, the ultraviolet curing layer 220 provides a more refined appearance by coating the outer surface of the case 200.

The surface of the case 200 may be etched in a specific pattern to give the case 200 a three-dimensional feel. A laser etching method using a laser beam can be applied for more precise processing.

A coating layer 250 covering the grooves 241 and 242 may be formed to protect the metal base 210 exposed through the grooves 241 and 242. [ The coating layer 250 may be formed by anodizing, vapor deposition, or the like, and may be implemented in various colors including paints.

The above-described mobile terminal and the case manufacturing method of the mobile terminal are not limited to the configurations and the methods of the embodiments described above, but the embodiments may be modified such that all or some of the embodiments are selectively combined .

Claims (9)

1. A mobile terminal comprising a case having an appearance,
In this case,
A base formed of metal;
An ultraviolet curing layer disposed to cover the base and formed of a material that is cured by ultraviolet (UV) irradiation;
A bonding layer disposed between the base and the ultraviolet ray hardening layer, the bonding layer being formed of a synthetic resin and having one side and the other side bonded to the base and the ultraviolet ray hardening layer so that the ultraviolet ray hardening layer can be formed on the base; And
A plurality of grooves formed in a plurality of grooves which are recessed from the one surface of the ultraviolet curing layer toward the base, the plurality of grooves including an etching portion forming a specific pattern,
Wherein the bonding layer is any one of a film layer, a spray layer, and a coating layer formed of polycarbonate (PC). delete The method according to claim 1,
Wherein the groove is formed to be recessed so that the base is exposed to the outside. The method of claim 3,
In this case,
Further comprising a coating layer disposed to cover the groove and made of a light transmitting material. 5. The method of claim 4,
Wherein the coating layer is an oxide film formed by oxidation and corrosion of the surface of the base. 5. The method of claim 4,
Wherein the coating layer and the ultraviolet curing layer form the same plane. The method according to claim 1,
Wherein the bonding layer is bonded to the base by thermal fusion. delete delete

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