KR20110077362A - Antenna, preparing method thereof and mobile terminal comprising the same - Google Patents

Abstract

PURPOSE: An antenna for improving watertightness, a manufacturing method thereof, and a mobile terminal including the same are provided to prevent the exterior defect of a pattern layer in a transparent antenna and a transparent film by placing the antenna between a first and a second transparent projectile. CONSTITUTION: A transparent electrode layer is formed on a transparent film(S101). The order for forming the antenna pattern in the transparent electrode layer is additionally included. A sealing layer is formed on the transparent electrode layer(S102). A protection sheet is attached on the sealing layer(S103). An antenna is made by punching to extract the antenna pattern(S104).

Description

Antenna, method for manufacturing same and mobile terminal comprising same {Antenna, preparing method according to example and mobile terminal comprising the same}

The present invention relates to an antenna that is excellent in watertightness and durability, easy to join to a three-dimensional curved surface, and prevents disconnection defects and appearance defects, a manufacturing method thereof, and a mobile terminal including the same.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. 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 increase the function of such a terminal, it may be considered to improve the structural part and / or the software part of the terminal.

An antenna is a device that performs a function of encoding or decoding an electric signal as a radio wave, and an antenna used in a mobile terminal such as a mobile phone can be largely divided into an external type and an internal type.

In case of an external antenna, the antenna protrudes out of the mobile terminal, which is inconvenient for the user, and the volume of the mobile terminal increases due to the internal space occupied by the antenna. It can be reduced, but still has a disadvantage of occupying a small volume.

On the other hand, customer needs for mobile terminals of various designs are increasing, and in particular, user demand for mobile terminals having transparent cases is increasing.

The present invention is to provide an antenna and a method of manufacturing the same that are excellent in watertightness and durability, easy to join to a three-dimensional curved surface, and can prevent disconnection defects and appearance defects.

In addition, the present invention is to provide a mobile terminal capable of enlarging the transparent portion area, and can increase the degree of freedom of design design.

An antenna according to an embodiment of the present invention for realizing the above object is a transparent film; A transparent antenna pattern layer formed on the transparent film; And a sealing layer formed on the transparent antenna pattern layer.

Here, the sealing layer may be formed of an optically transparent double-sided tape.

In addition, the transparent antenna pattern layer may be formed of a material having a conductivity of 5.8 * 10 ⁶ S / m or more.

In addition, the transparent antenna pattern layer may be formed of one or more selected from the group consisting of carbon nanotubes (CNT), indium-tin-oxide (ITO), indium-zinc-oxide (IZO), and IZTO / Ag / IZTO. .

Method of manufacturing an antenna according to an embodiment of the present invention comprises the steps of (a) forming a transparent electrode layer on a transparent film; (b) forming a sealing layer on the transparent electrode layer; (c) attaching a protective sheet on the sealing layer; And (d) manufacturing the antenna by punching the antenna pattern to be extracted.

In addition, in step (a), the method may further include forming an antenna pattern on the transparent electrode layer.

In addition, the antenna pattern may be formed by an etching method.

In addition, in step (a), the transparent electrode layer is at least one selected from the group consisting of carbon nanotubes (CNT), indium-tin-oxide (ITO), indium-zinc-oxide (IZO), and IZTO / Ag / IZTO. Can be formed.

In addition, in step (b), the sealing layer may be formed of an optically transparent double-sided tape.

In addition, in step (c), the method may further include attaching a protective sheet to the rear surface of one surface on which the transparent electrode layer of the transparent film is formed.

In addition, the method may further include forming an adhesive layer between the protective sheet and the transparent film.

In addition, the method of manufacturing an antenna according to an embodiment of the present invention includes the steps of: (f) adhering the manufactured antenna on a first transparent injection molded product; And (g) injecting the first transparent injection molded product having the bonded antenna into the mold and covering the antenna with the second transparent injection molded product.

A mobile terminal according to an embodiment of the present invention includes a case having a transparent portion and a bezel portion; A display unit disposed on the bezel portion of the case; A controller electrically connected to the display unit; And an antenna disposed in the transparent part of the case and formed on the transparent film and the transparent film, the antenna having a transparent antenna pattern layer electrically connected to the controller and a sealing layer formed on the transparent antenna pattern layer.

Here, the sealing layer may be formed of an optically transparent double-sided tape.

In addition, the antenna may have a sealing layer attached to the inner peripheral surface of the transparent portion of the case.

In addition, the transparent antenna pattern layer may be formed of one or more selected from the group consisting of carbon nanotubes (CNT), indium-tin-oxide (ITO), indium-zinc-oxide (IZO), and IZTO / Ag / IZTO. .

The antenna and the manufacturing method thereof according to the at least one embodiment of the present invention configured as described above are excellent in watertightness and durability, easy to be bonded to a three-dimensional curved surface, and can prevent a disconnection defect and an appearance defect.

In addition, the mobile terminal according to at least one embodiment of the present invention can enlarge the transparent region and increase the degree of freedom in design design.

Hereinafter, a mobile terminal according to the present invention will be described in more detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the following description are given or used in consideration of ease of specification, and do not have distinct meanings or roles from each other.

The mobile terminal described herein may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), 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 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 a 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 the jetting or suction port, grazing to the skin surface, contact of the 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 configuration aspects 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 can be a passage 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. These may be implemented by the controller 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 codes are stored in the memory 160 and can be executed by the control unit 180. [

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

The disclosed mobile terminal 100 has a terminal body having a bar shape. 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 a 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 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.

FIG. 2B is a rear perspective view of the mobile 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 mobile 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.

The rear case 102 may be further equipped with a touch pad 135 for sensing a touch. Like the display unit 151, the touch pad 135 may also be configured to have a light transmission type. In this case, if the display unit 151 is configured to output visual information from both sides, the visual information may be recognized through the touch pad 135. The information output on both surfaces may be controlled by the touch pad 135. Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on the rear case 102 as well.

The touch pad 135 operates in association with the display unit 151 of the front case 101. The touch pad 135 may be disposed in parallel to the rear of the display unit 151. The touch pad 135 may have the same or smaller size as the display unit 151.

The mobile terminal 100 according to the present invention has been described in terms of components according to functions and arrangement of the components. Hereinafter, referring to FIG. 3, the mobile terminal related to the present invention will be further described in terms of components according to appearance.

Hereinafter, for convenience of description, a bar type mobile terminal having a front touch screen is described as an example among various types of mobile terminals such as a folder type, a bar type, a swing type, a slider type, and the like. However, the present invention is not limited to the bar type mobile terminal, but may be applied to all types of mobile terminals including the above-described type, and the same or similar components as those described with reference to FIGS. Reference numerals are given, and duplicate descriptions are omitted.

3 is a perspective view illustrating main parts of a mobile terminal according to an exemplary embodiment of the present invention, and FIG. 4 is an enlarged perspective view of part A of FIG. 3 and illustrates an antenna constituting the mobile terminal.

The mobile terminal 200 according to an embodiment of the present invention includes a case 201 having a transparent portion 202 and a bezel portion 203, a display portion 251 disposed in the case 201, and the display portion ( 251 and a controller (not shown) electrically connected with each other.

In addition, the mobile terminal 200 includes an antenna 10 disposed in the transparent portion 202 of the case 201.

Hereinafter, the antenna 10 and its manufacturing method will be described in detail with reference to the accompanying drawings.

5 is a cross-sectional view showing an antenna according to the present invention.

4 and 5, the antenna 10 is a transparent antenna pattern layer 12 formed on the transparent film 11 and the transparent film 11 and a sealing formed on the transparent antenna pattern layer 12. Layer 13.

The transparent film 11 may be formed of a transparent film such as polyethylene terephthalate (PET) resin or polyether sulfone (PES) resin, and forms a transparent adhesive layer on the rear surface of the transparent antenna pattern 12 formed thereon. It may be attached to the inner peripheral surface of the transparent portion of the case.

Referring to FIG. 3, the transparent antenna pattern layer 12 may have a high transmittance, and may be formed of a transparent material having low resistance and excellent bending characteristics at room temperature. For example, carbon nanotubes (CNT) and indium tin oxide (ITO) may be used. It may be formed of one or more selected from the group consisting of -Tin-Oxide), Indium-Zinc-Oxide (IZO) and IZTO / Ag / IZTO (multilayer transparent electrode).

In addition, the transparent antenna pattern layer 12 may be formed of a transparent material having a transmittance of 1% or more, preferably 50% or more, more preferably 80% or more, and the transparent antenna pattern layer 12 The conductivity may be formed of a material of 5.8 * 10 ⁶ S / m or more.

In general, in the case of forming the transparent antenna pattern layer 12 by thinning the thickness of the transparent material, there is an advantage in that the transmittance is increased, while the resistance is increased, which may cause a problem that the efficiency of the antenna is lowered.

Therefore, the transparent antenna pattern layer 12 is preferably formed of a transparent material of 5.8 * 10 ⁶ S / m or more in consideration of the efficiency of the antenna.

In addition, the transparent antenna pattern layer 12 may have a feeding part (not shown) and a grounding part (not shown) electrically connected to the controller.

The power supply unit is an area in which the transparent antenna pattern layer 12 is electrically connected to a control unit (for example, a main PCB) mounted inside the mobile terminal to transmit a signal to the transparent antenna pattern layer 12, and the grounding unit is a main body. The transparent antenna pattern layer 12 is connected to the ground plane formed on the PCB or the ground plane formed separately in the case 201 to ground the current of the transparent antenna pattern layer 12.

3 and 4, the transparent antenna pattern layer 12 may have a meander line in which horizontal progression portions and vertical connection portions are continuously formed for the purpose of lengthening the antenna effective length in a narrow space. have.

In addition, in the 13.56 MHz to 3000 MHz band, one or more transparent antenna pattern layers 12 may be implemented on the same transparent film 11 in a plurality of application bands (such as RFID or GPS) or one application band.

Referring to FIG. 5, the sealing layer 13 functions to protect the transparent antenna pattern layer 12, and in particular, prevents the penetration of moisture in a high temperature and high humidity environment to prevent the transparent film 11 and the transparent antenna pattern layer 12. To prevent lifting, disconnection, and poor appearance.

The sealing layer 13 may be formed of a transparent material having water resistance and durability, but is not limited thereto. For example, the sealing layer 13 may be formed of an optical transparent double-sided tape (OCA).

The optical transparent double-sided tape (OCA) has an adhesive layer formed on both sides thereof, and attaches one surface to the transparent antenna pattern layer 12 and attaches the other surface to the inner circumferential surface of the transparent portion 202 of the case 201 of the mobile terminal. Since it can make it workable, workability can be improved.

A method of manufacturing the antenna 10 having such a structure will be described in detail with reference to the accompanying drawings.

6 is a flowchart illustrating a method of manufacturing an antenna according to the present invention, and FIGS. 7 and 8 are conceptual views illustrating a method of manufacturing an antenna according to the present invention.

The method of manufacturing an antenna according to an embodiment of the present invention includes (a) forming a transparent electrode layer on a transparent sheet (S101) and (b) forming a sealing layer on the transparent electrode layer (S102) and (c A) attaching a protective sheet on the sealing layer (S103) and (d) punching the antenna pattern to be extracted (S104).

Referring to FIG. 7, each step will be described in detail. As shown in FIG. 7A, a transparent film 11 such as a polyethylene terephthalate (PET) resin or a polyether sulfone (PES) resin is prepared.

Thereafter, as shown in FIG. 7B, a transparent electrode layer T is formed on one surface of the transparent film 11 (hereinafter, referred to as an upper surface for convenience), and the transparent electrode layer T considers the efficiency of an antenna. 5.8 * 10 ⁶ S / m or more can be formed of a transparent material, carbon nanotubes (CNT), ITO (Indium-Tin-Oxide), IZO (Indium-Zinc-Oxide) and IZTO / Ag / IZTO (multi-layer transparent Electrode).

As shown in FIG. 7C, the antenna pattern 12 may be formed on the transparent electrode layer T by an etching method. Alternatively, the antenna pattern may be integrally formed through punching (P) while the sealing layer and the protective sheet are attached. However, if the antenna pattern 12 is formed in advance on the transparent electrode layer T, cracking of the antenna pattern 12 may be more effectively prevented than the method of integrally forming the antenna pattern through punching.

Thereafter, as shown in FIG. 7D, a sealing layer 13 is formed on the transparent antenna pattern 12, and the sealing layer 13 performs a function of protecting the transparent antenna pattern 12. In particular, in order to prevent the penetration of moisture in a high temperature and high humidity environment to prevent lifting, disconnection and poor appearance of the transparent film 11 and the transparent antenna pattern layer 12, it may be formed of a transparent material having water resistance and durability. However, the present invention is not limited thereto, and for example, may be formed of an optical transparent double-sided tape (OCA).

As shown in FIG. 7D, the protective sheet 14 is attached onto the sealing layer 13, and the protective sheet 14 is scattered in the punching (P) step except for the antenna pattern. It prevents, and consists of a release paper to perform the function of not exposing the adhesive layer of the sealing layer 13 to the outside.

In this case, the protective sheet 14 may be additionally attached to the rear surface of one surface on which the transparent electrode layer T of the transparent film 11 is formed, and the sealing layer 14 may be disposed between the protective sheet 14 and the transparent film 11. 13) can be formed.

Thereafter, as illustrated in FIG. 7F, the transparent antenna 10 may be manufactured by extracting the antenna pattern 12 by punching the stacked structure as described above.

As described above, in order to lengthen the effective length of the antenna in a narrow space, a meander line in which the horizontal progression portion and the vertical connection portion are formed in succession may be punched into the pseudo antenna pattern 12.

Thereafter, the protective sheet 14 may be removed and attached to the inner circumferential surface of the transparent portion 203 of the case 201 of the mobile terminal 200 through the adhesive layer of the sealing layer 13.

The antenna 10 manufactured as described above may retain a portion of the transparent film 10 to maintain a shape according to a pattern, and may be bonded to a three-dimensional apparatus having various shapes by removing a protective sheet with a simple tool during operation. It is possible to prevent disconnection and appearance defects of the antenna pattern.

Meanwhile, referring to FIG. 8, in the method of manufacturing the antenna according to the exemplary embodiment of the present invention, the antenna 10 manufactured as shown in FIG. 7 may be attached to the first transparent injection molded product 20, and the antenna 10 may be attached. The method may further include covering the antenna 10 with the second transparent injection molding material 30 by injecting the first transparent injection molding material 20 attached thereto into the mold.

The first transparent injection molded product 20 and the second transparent injection molded product 30 may be formed of a transparent resin or an optical material having high transmittance, but are not limited thereto. For example, polycarbonate (PC) resin, polymethyl methacrylate, and the like. (PMMA) resin and optical material may be formed of one or more selected from the group consisting of CR-39.

As such, by disposing the antenna 10 between the first transparent injection molded product 20 and the second transparent injection molded product 30, the transparent film 11 and the transparent antenna pattern layer ( It can prevent the lifting, disconnection and appearance defect of 12).

In addition, by insert molding, the first transparent injection molded product 20 and the second transparent injection molded product 30 may be manufactured in various shapes, and the transparent parts 203 of the case 201 of the mobile terminal 200 may be integrally formed. ) Can be configured.

In particular, since the first transparent injection molded product 20 and the second transparent injection molded product 30 may be integrally manufactured to manufacture a three-dimensional device having various shapes, the transparent part of the mobile terminal 200 having a beautiful appearance design may be configured. have.

Hereinafter, a mobile terminal 200 including the antenna 10 manufactured by the above-described method will be described in detail with reference to the accompanying drawings.

Referring to FIG. 3, a mobile terminal 200 according to an embodiment of the present invention includes a case 201 having a transparent portion and a bezel portion, and a display portion 251 disposed on the bezel portion 205 of the case 201. And an antenna 10 electrically connected to the display unit 251 and the transparent unit 204 of the case 201.

As described above with reference to FIGS. 4 to 6, the antenna 10 is disposed on the transparent film 11, the transparent antenna pattern layer 12 formed on the transparent film 11, and the transparent antenna pattern layer 12. The formed sealing layer 13 is included.

In addition, as described with reference to FIG. 7, the antenna 10 may further include a sealing layer 13 formed on a rear surface of one surface on which the transparent antenna pattern layer 12 of the transparent film 11 is formed.

The sealing layer 13 may be formed of a transparent material having water resistance and durability, but is not limited thereto. For example, the sealing layer 13 may be formed of an optical transparent double-sided tape (OCA).

Since the OAC is formed on both sides of the optical double-sided tape (OCA), the transparent portion 204 of the case 201 of the mobile terminal 200 is a sealing layer 13 formed on the transparent antenna pattern layer 12. The antenna 10 may be bonded to the inner circumferential surface of the antenna, and the antenna 10 may be attached to the inner circumferential surface of the transparent portion 204 of the case 201 of the mobile terminal by a sealing layer 13 formed on the rear surface of the transparent film 11. ) Can be bonded.

As described with reference to FIGS. 2A and 2B, the case 201 of the mobile terminal 200 may include the front case 202 and the rear case 203.

The front case 202 may have a transparent portion 204 and a bezel portion 205, the rear case 203 may have a transparent portion and a bezel portion, and the antenna 10 may have a sealing layer 13. Through the inner peripheral surface of the transparent portion 204 of the front case 202 and the inner peripheral surface of the transparent portion of the rear case 203 may be attached to at least one inner peripheral surface.

In addition, the front case 202 and the rear case 203 may be selectively formed in various areas in consideration of the appearance design, for example, each of the display unit 251 and the display unit 251 An area up to about 5 mm from the edge portion may be formed as a bezel portion to mount various electronic components (eg, a control part) in the interior space thereof.

Each transparent part may be formed of a transparent resin or an optical material having high transmittance, but is not limited thereto. For example, the transparent part may be a polycarbonate (PC) resin, a polymethyl methacrylate (PMMA) resin, and an optical material CR-39. It may be formed of one or more selected from the group consisting of, the transmittance is preferably 50% or more, more preferably 80% or more.

In this case, the antenna 10 is manufactured by the method described with reference to FIG. 7, and the protective sheet 14 is removed to expose the sealing layer 13, and the front case 202 of the front case 202 is exposed through the adhesive layer of the sealing layer 13. The inner circumferential surface of the transparent portion 204 and the inner circumferential surface of the transparent portion of the rear case 203 may be attached to at least one inner circumferential surface.

In addition, the antenna 10 prevents the penetration of moisture in a high temperature and high humidity environment, thereby preventing lifting, disconnection, and appearance defects of the transparent film 11 and the transparent antenna pattern layer 12, thereby providing a beautiful appearance of the mobile terminal 200. Does not hurt.

In addition, the mobile terminal 200 according to an embodiment of the present invention can be easily bonded to the antenna 10 without lifting phenomenon even if the transparent portion of the case 201 is formed of a three-dimensional structure having various shapes, The workability can be improved, and the antenna efficiency can be increased by forming various antenna patterns.

Until now, the method of manufacturing the antenna 10 in advance and bonding it to the inner circumferential surface of the transparent part of the case 201 has been described. Alternatively, the transparent part having the antenna 10 is separately manufactured, and the display part and various electronic components are manufactured. The method of coupling to the mounted mobile terminal body is also possible.

In one embodiment, the case 201 may be divided into a first body (not shown) on which the display unit 251 and the control unit are disposed, and a second body (not shown) on which the antenna 10 is disposed. .

That is, as shown in FIG. 3, a region up to about 5 mm from each edge of the display unit 251 is formed as a bezel portion, which is configured as a first body, and the remaining region is formed as a transparent portion, which is configured as a second body. In this case, the second body is from the group consisting of a transparent material having a transmittance of 50% or more described above, for example, polycarbonate (PC) resin, polymethyl methacrylate (PMMA) resin and CR-39 which is an optical material. It may be formed of one or more selected.

On the other hand, the first body and the second body can be coupled through the fitting coupling, etc., the control unit of the first body and the antenna 10 of the second body may be electrically connected through a flexible printed circuit board (FPCB) or a transparent electrode. Can be.

In addition, the antenna 10 and the control unit may be electrically contacted directly for power feeding, or may be electromagnetically indirectly fed at intervals of 0.01 lambda or less based on free space wavelength.

As such, the second body having the antenna 10 may be manufactured by the antenna manufacturing method described with reference to FIG. 8.

That is, by placing the antenna between the first transparent injection molding 20 and the second transparent injection molding 30 and then insert-injecting integrally, the first and second transparent injection moldings 20 and 30 integrally constitute the first body. can do.

By arranging the antenna 10 between the first and second transparent injection moldings, it is possible to prevent the penetration of moisture in a high temperature and high humidity environment, thereby preventing the transparent film 11 and the transparent antenna pattern layer 12 from lifting, disconnection and appearance defects. Can be.

In addition, by insert molding, the first transparent injection molded product 20 and the second transparent injection molded product 30 may be manufactured in various shapes, and the transparent parts 203 of the case 201 of the mobile terminal 200 may be integrally formed. ), I.e., the first body.

In particular, since the first transparent injection molded product 20 and the second transparent injection molded product 30 may be integrally manufactured to manufacture a three-dimensional device having various shapes, the transparent part of the mobile terminal 200 having a beautiful appearance design may be configured. have.

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

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

Figure 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 one embodiment of the present invention;

3 is a perspective view of main parts of a mobile terminal according to one embodiment of the present invention;

4 is an enlarged perspective view of a portion A shown in FIG.

5 is a cross-sectional view showing an antenna according to the present invention.

6 is a flowchart illustrating a method of manufacturing an antenna according to the present invention.

7 and 8 are conceptual diagrams showing a method of manufacturing an antenna according to the present invention.

Claims (16)

Transparent film; A transparent antenna pattern layer formed on the transparent film; And And a sealing layer formed on the transparent antenna pattern layer. The method of claim 1, And the sealing layer is formed of an optically transparent double-sided tape. The method of claim 1, The transparent antenna pattern layer is an antenna, characterized in that formed of a material having a conductivity of 5.8 * 10 ⁶ S / m or more. The method of claim 1, The transparent antenna pattern layer is an antenna, characterized in that formed of at least one selected from the group consisting of carbon nanotubes (CNT), indium-tin-oxide (ITO), indium-zinc-oxide (IZO) and IZTO / Ag / IZTO . (a) forming a transparent electrode layer on the transparent film; (b) forming a sealing layer on the transparent electrode layer; (c) attaching a protective sheet on the sealing layer; And (d) manufacturing an antenna by punching the antenna pattern to extract the antenna pattern. The method of claim 5, In step (a), further comprising the step of forming an antenna pattern on the transparent electrode layer. The method of claim 6, The antenna pattern is a method of manufacturing an antenna, characterized in that formed by the etching method. The method of claim 5, In step (a), the transparent electrode layer is formed of at least one selected from the group consisting of carbon nanotubes (CNT), Indium-Tin-Oxide (ITO), Indium-Zinc-Oxide (IZO), and IZTO / Ag / IZTO Method for manufacturing an antenna, characterized in that. The method of claim 5, In step (b), the sealing layer is a method of manufacturing an antenna, characterized in that formed of optical transparent double-sided tape. The method of claim 5, In step (c), further comprising the step of attaching a protective sheet on the rear surface of the transparent electrode layer of the transparent film is formed. 11. The method of claim 10, The method of manufacturing an antenna further comprising the step of forming an adhesive layer between the protective sheet and the transparent film. The method of claim 5, (f) adhering the prepared antenna onto the first transparent injection molding; And (g) injecting the first transparent injection molded product having the bonded antenna into the mold in a state of being inserted, and covering the antenna with the second transparent injection molded product. A case having a transparent portion and a bezel portion; A display unit disposed on the bezel portion of the case; A controller electrically connected to the display unit; And And an antenna disposed in the transparent part of the case and formed on the transparent film and the transparent film, the antenna having a transparent antenna pattern layer electrically connected to the controller and a sealing layer formed on the transparent antenna pattern layer. The method of claim 13, The sealing layer is a mobile terminal, characterized in that formed of an optically transparent double-sided tape. The method of claim 13, The antenna is a mobile terminal, characterized in that the sealing layer is attached to the inner peripheral surface of the transparent portion of the case. The method of claim 14, The transparent antenna pattern layer is characterized in that formed of at least one selected from the group consisting of carbon nanotubes (CNT), Indium-Tin-Oxide (ITO), Indium-Zinc-Oxide (IZO) and IZTO / Ag / IZTO terminal.

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