KR101667717B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to a touch input device, including a body having a display, a window coupled to the body to cover the display, a touch sensor disposed on one surface of the window and configured to sense a touch input, Wherein the touch film includes a plurality of recessed portions which are recessed on a surface facing the window, and when any point on the other surface is pressed, And the bottom of the recess portion is elastically deformed to move toward the touch sensor.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal in which a touch film for transmitting a touch input to a touch sensor is disposed on a window.

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 such multimedia devices. For example, a user interface environment is provided for a user to easily and conveniently search for or select a function.

In addition to the above attempts, it may be considered to further improve the functions of the hardware and the like. Such improvements include structural changes and improvements for a user to use the mobile terminal more conveniently, and a touch film covering a window in a mobile terminal having a touch sensor can be considered.

The present invention proposes a mobile terminal having a touch film which has not been conventionally used.

Another object of the present invention is to provide a mobile terminal including a touch film which can be used in combination with an electrostatic / static pressure method.

According to another aspect of the present invention, there is provided a mobile terminal including a main body having a display, a window coupled to the main body to cover the display, A touch sensor configured to sense a touch input, and a conductive touch film disposed to cover the window to transmit the touch input to the touch sensor, wherein the touch film is recessed on a surface facing the window And a plurality of recessed portions are provided. When any point on the other surface is pressed, the bottom of the recessed portion corresponding to the pressing point is elastically deformed to move toward the touch sensor.

According to one embodiment of the present invention, the touch film includes a light transmitting film formed with a plurality of recessed portions recessed in a plane, and a conductive layer formed on both surfaces of the light transmitting film and deposited with a conductive material.

According to another embodiment of the present invention, the width of the recess formed at the center of the touch film is smaller than the width of the recess formed at the edge of the touch film.

According to the present invention having the above-described structure, the touch film is applied to all the mobile terminals having the electrostatic / static pressure type touch sensor, so that the touch input can be transmitted to the touch sensor and the window or the touch sensor can be protected from the external environment .

Further, when the present invention is applied to a mobile terminal having an electrostatic touch sensor, since a touch having an area larger than an area contacting the touch film is transmitted to the touch sensor, even with a touch pen having a tip with a smaller radius, This is possible.

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 an exploded perspective view of a mobile terminal according to an embodiment of the present invention;
5 is a plan view of the touch film shown in Fig.
6 is a cross-sectional view of the touch film taken along the line AA in Fig.
FIG. 7 is a conceptual diagram illustrating a concept of touch input to the mobile terminal shown in FIG. 4;
FIG. 8 is a conceptual diagram illustrating a concept of touch input to a mobile terminal according to another embodiment of the present invention. FIG.

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

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

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

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

Hereinafter, the components will be described in order.

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

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

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only (DVF-H) 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 a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

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

The display unit 151 occupies most of the main surface of the front case 101. 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 inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152 or the size of the sound output from the display unit 151 To the touch recognition mode of the touch screen.

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

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

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

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

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

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

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

The touch film included in the mobile terminal 100 of the present invention can be applied to the display unit 151. Hereinafter, the mobile terminal 100 including the touch film will be described in more detail.

4 is an exploded perspective view of a mobile terminal 100 according to an embodiment of the present invention.

4 shows a configuration of the display unit 151 in the mobile terminal 100 having the electrostatic touch sensor 240. In FIG.

Referring to the drawings, a printed circuit board 217 may be mounted on the rear case 102. The printed circuit board 217 may be configured as an example of a controller 180 (see FIG. 1) for operating various functions of the mobile terminal. As shown in the figure, the audio output module 152, the camera 121, and the like can be mounted on the printed circuit board 217. The sound output module 152 may be, for example, a speaker, a receiver, or the like.

A display 210 electrically connected to the printed circuit board 217 may be mounted on one surface of the printed circuit board 217. The display 210 may have an area corresponding to a region through which the light of the window 250 is transmitted. Accordingly, the user can recognize the time information output from the display 210 from the outside.

The touch sensor 240 is mounted on one surface of the window 250 and disposed on the upper surface of the display 210. The touch sensor 240 is configured to convert a change in the amount of charge or the like occurring in a specific portion of the window 250 into an electrical input signal. A region of the touch sensor 240 corresponding to a portion through which light is transmitted through the window 250 forms an input region. The touch sensor 240 is formed to sense a touch input and is made of light transmissive.

The touch sensor 240 includes first and second electrode films 220 and 230.

The first electrode layer 220 is disposed on the upper surface of the front case 101. The second electrode layer 230 is spaced apart from the first electrode layer 220 and covers the first electrode layer 220. The first and second electrode films 220 and 230 may be a light transmissive conductive film such as an indium tin oxide (ITO) film, a carbon nanotube (CNT) film, or the like.

A conductive window 250 is coupled to the upper surface of the touch sensor 240. The window 250 is made of a material through which light can be transmitted, for example, a light transmitting synthetic resin, a tempered glass, or the like. The window 250 may be formed to include a portion that can not transmit light.

The current flows continuously through the window 250 and the touch sensor 240 measures changes in the amounts of charges in the X and Y directions through the first and second electrode films 220 and 230, respectively. The touch sensor 240 is electrically connected to a printed circuit board 217 having a detection unit. The detecting unit is connected to the first and second electrode films 220 and 230 and detects a touch input to the input region by using a change in the amount of the sensed electric charge.

For example, when a conductor such as a finger or a touch pen touches the window 250, the electrons in the window 250 are moved to the conductor, and the touch sensor 240 detects the change of the electrons, .

The touch film 300 may be disposed on the upper surface of the touch sensor 240. The touch film 300 may be formed of a light transmitting material, for example, a polycarbonate (PC) or a polyethylene terephthalate (PET) material. The touch film 300 may be formed to include a portion that can not transmit light. As shown in the figure, the touch film 300 may be formed such that a central region corresponding to the display 210 is transparent and an edge region is opaque.

At one end of the touch sensor 240, the window 250 and the touch film 300, acoustic holes corresponding to the sound output module 152 and an image window corresponding to the camera 121 may be formed. The image window may be formed separately from the light-transmitting material, or may be integrated with the touch sensor 240, the window 250, and the touch film 300 to form a part thereof.

Hereinafter, the structure of the touch film 300 and the manner in which the touch input is performed to the mobile terminal 100 will be described in detail.

FIG. 5 is a plan view of the touch film 300 shown in FIG. 4, and FIG. 6 is a cross-sectional view of the touch film 300 taken along line A-A of FIG.

Referring to FIGS. 5 and 6, a plurality of recessed portions 310 are formed in a central region of the touch film 300 corresponding to the display 210, the recessed portions 310 being recessed on a surface facing the window 250. The plurality of recessed portions 310 may be formed continuously with the adjacent recessed portions so that one recessed portion corresponds to one coordinate.

The recess portion 310 is formed to be elastically deformable, and when the user presses the other surface, the bottom 311 of the recess portion 310 corresponding to the pressing point is pressed. Accordingly, the user can feel the same key feel as the mobile terminal having the key assembly even in the mobile terminal 100 having the touch sensor 240.

When the user looks vertically at the center of the touch film 300, time information outputted through the edge of the touch film 300 may change in color or brightness due to refraction of light. The width of the recess portion formed at the edge of the touch film 300 is set to be larger than the width of the recess portion formed at the center so that the user can receive the undistorted time information even when the user views the touch film 300 at any point. .

The time information output from the display 210 is refracted while passing through the recess portion 310, and such a structure can make the user feel the three-dimensional effect.

The touch film 300 may include a translucent film 320 on which a plurality of recessed portions 310 are formed and a conductive layer 330 formed on both sides of the translucent film 320.

The translucent film 320 may be formed of PC, PET, acrylic or the like which can maintain the flexibility of the touch film 300.

The conductive layer 330 allows a capacitor to be formed between both surfaces of the touch film 300 when the conductor touches the touch film 300. Accordingly, the electrons in the window 250 move to the conductor, and the touch sensor 240 can sense the change and measure the coordinates.

The conductive layer 330 may be formed by depositing a light-transmitting conductive material such as indium tin oxide (ITO), carbon nanotube (CNT), or the like.

FIG. 7 is a conceptual diagram illustrating a concept of touch input to the mobile terminal 100 shown in FIG.

Referring to FIG. 7, a touch sensor 240, a window 250, and a touch film 300 including first and second electrode films 220 and 230 are sequentially disposed on a display 210.

When a point of the touch film 300 is pressed through the user's hand or the touch pen, the bottom 311 of the recess portion 310 corresponding to the pressing point is elastically deformed to move toward the touch sensor 240.

Since the capacitor is formed between the conductor and the touch sensor 240 through the conductive layer 330 when the conductor approaches the touch film 300, the controller 180 detects a change point of the amount of charge, .

In the case of a mobile terminal having an electrostatic touch sensor 240, a touch must be made through a sufficient area so that the charge can be moved. When the user presses any point on the touch film 300, the bottom of the recess 310 corresponding to the touch point touches the window, so that a touch of a larger area can be achieved by touching points, lines or faces. Therefore, even with a touch pen having a tip with a smaller radius, touch input becomes possible.

FIG. 8 is a conceptual diagram showing a concept of touch input to a mobile terminal 100 according to another embodiment of the present invention.

8, a window 251, a touch sensor 241 including first and second electrode films 221 and 231, and a touch film 300 are sequentially disposed on an upper surface of a display 211 .

When a point of the touch film 300 is pressed through a user's hand or a touch pen, the bottom of the recess 310 corresponding to the touch sensor 241 is pressed against the window 251 So that the touch sensor 241 is pressed. Accordingly, the first and second electrode films 221 and 231 are brought into contact with each other at a pressing point, and the controller 180 senses the pressing point and generates a touch input corresponding to the pressing point.

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

Claims (3)

A body having a display;
A window coupled to the body to cover the display;
A touch sensor disposed on one side of the window and configured to sense a touch input; And
And a conductive touch film disposed to cover the window to transmit the touch input to the touch sensor,
The touch film includes:
And a plurality of recesses that are recessed on a surface facing the window, wherein when the point of the other surface is pressed, the bottom of the recessed portion corresponding to the pressing point is elastically deformed to move toward the touch sensor. terminal. The method according to claim 1,
The touch film includes:
A translucent film in which a plurality of the recessed portions are recessed in a plane; And
And a conductive layer formed on both sides of the light-transmitting film and formed by depositing a conductive material. The method according to claim 1,
Wherein the width of the recess formed at the center of the touch film is smaller than the width of the recess formed at the edge of the touch film.

Images