KR101981095B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to a display device comprising a window formed to receive an input signal by a touch and constituting an appearance of a main body of a terminal, a plurality of lines extending in a first direction on a lower surface of the window and arranged in a second direction crossing the first direction 1 conduction line and a second conductive layer disposed below the window and outputting visual information through the window and extending in the second direction and being arranged along the first direction, And a second conductive layer including a plurality of second conductive lines formed to generate a signal by touching the display panel.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal including a touch panel integrated liquid crystal panel.

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.

In addition, mobile terminals are regarded as personal items for expressing their individuality, and various design forms are required. The design form also includes structural changes and improvements for the user to more conveniently use the mobile terminal.

Recently, in order to improve the performance of a touch panel, a touch panel type liquid crystal display device in which a touch panel and a liquid crystal panel are integrally formed is being studied. However, in the case of a touch panel type liquid crystal display device, a parasitic capacitance between the liquid crystal panel and a sensor of the touch panel may be generated, which may cause a deterioration of the performance of the touch panel.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a mobile terminal having a touch panel integrated liquid crystal panel having improved performance by limiting the generation of parasitic capacitance between a liquid crystal panel and a touch panel.

According to an aspect of the present invention, there is provided a mobile terminal including a window, a display panel, a first conductive layer, and a second conductive layer. The window constitutes an external appearance of the main body of the terminal, and a signal by touch is inputted. The first conductive layer includes a plurality of first conductive lines extending in a first direction on a lower surface of the window and arranged in a second direction intersecting the first direction. The display panel is disposed under the window and outputs time information through the window. The display panel includes a second conductive layer extending in the second direction and arranged along the first direction and having a second conductive line formed to generate a signal by the touch with the first conductive layer .

In one embodiment of the present invention, the display panel includes a color filter layer formed to implement a plurality of colors, and the second conductive line is formed on the color filter layer.

In one embodiment of the present invention, the mobile terminal further includes an adhesive layer formed between the display panel and the window to adhere the display panel to the window.

In one embodiment of the present invention, the adhesive layer is disposed between the first and second conductive layers and is formed of an insulating material to insulate the first and second conductive lines.

In one embodiment of the present invention, the mobile terminal includes a circuit board electrically connected to the display panel to transmit and receive a signal of the display panel, and a second conductive line connected to the second conductive line, And a flexible circuit board for electrically connecting the circuit board.

In one embodiment of the present invention, the second conductive line is electrically connected to the first conductive line, and a signal is generated when a point at which the first conductive line intersects with the second conductive line is touched.

In one embodiment of the present invention, the conductive line of the second conductive layer is formed to ground the voltage of the display panel except for the conductive line that is touched among the plurality of second conductive lines.

In one embodiment of the present invention, the display panel includes at least one electrode, at least one switching element connected to the plurality of second conductive lines for switching the second conductive line to be electrically connected to the electrode, .

In one embodiment of the present invention, when a signal is input to any one of the second conductive lines by the touch, a switching element connected to the remaining of the second conductive lines connects the electrode and the second conductive line Lt; / RTI >

According to an embodiment of the present invention, the display panel includes a liquid crystal layer formed to refract light provided in the light source part, and a transistor layer configured to control a voltage provided to the liquid crystal layer, And is formed in the transistor layer.

As an example related to the present invention, the mobile terminal further includes a circuit board for transmitting and receiving signals of the display panel, and the second conductive line is connected to the circuit board. The first conductive line is connected to the circuit board by a flexible circuit board to generate a touch signal together with the second conductive line.

Since the first conductive layer is formed on the lower surface of the window and the second conductive layer is formed on any one of the plurality of layers constituting the display panel and a separate base substrate and insulating layer are not required, have.

In addition, since the ground layer of the display panel is omitted and at least a part of the conductive lines of the second conductive layer forms the grounding point, noise between the touch panel and the display panel can be prevented.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention;
FIG. 2A is a perspective view of a mobile terminal according to an exemplary embodiment of the present invention. FIG.
FIG. 2B is a rear perspective view of the mobile terminal shown in FIG. 2A. FIG.
Figure 3 is an exploded view of the mobile terminal of Figure 2a according to one embodiment.
FIG. 4 is an enlarged sectional view of the touch panel integrated type display panel of FIG. 3 cut along AA. FIG.
5 is a structural view of a touch panel integrated type display panel shown for explaining a touch panel and a flexible circuit board.
FIG. 6 is a cross-sectional view of the touch panel integrated type display panel according to another embodiment of FIG. 3 taken along AA. FIG.
Figure 7 is an enlarged view of the thin film transistor layer of Figure 6;

Hereinafter, a mobile terminal related to the present invention 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. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

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 Broadcast-Handheld (ISDB-T), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. 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 210. [

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 an output related to a visual, auditory or tactile sense and includes a display unit 210, an acoustic output module 152, an alarm unit 153, and a haptic module 154 .

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 210 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 suction force of the air through the injection port or the suction port, a touch on the skin surface, contact of 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. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable 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 170 may be a path through which power from the cradle is supplied to the mobile terminal 100, or various commands A signal may be a path through which the signal is transmitted to the mobile 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. [

The display unit 210 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 210 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 210 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 210 of the terminal body.

There may be two or more display units 210 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 'touch screen') in which a display unit 210 and a sensor (hereinafter, referred to as 'touch sensor') that detects a touch operation 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 210 or a capacitance generated at a specific portion of the display unit 210 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 210 is touched or the like.

2A is a perspective view of a mobile terminal according to an exemplary embodiment of the present invention. 2B is a rear perspective view of the mobile terminal shown in FIG. 2A.

1, 2A and 2B, the mobile terminal 200 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, and a swing type in which two or more bodies are relatively movably coupled. Further, the mobile terminal described herein may be any portable electronic device having a camera and flash, for example, a mobile phone, a smart phone, a notebook computer, a digital broadcast terminal, a Personal Digital Assistants ), A PMO (Portable Multimedia Player), and the like.

The terminal body includes a case (which may be referred to as a casing, a housing, a cover, and the like) that forms an appearance. The case may be divided into a front case 201 and a rear case 202 covering a surface opposite to the front case and a battery cover 203 covering the rear case 202 and constituting an outer appearance of the terminal body. Various electronic components are embedded in the space formed between the front case 201 and the rear case 202. 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 front of the terminal body includes a display unit 210, a first sound output unit 211, a signal input unit 217, a front camera unit 216, and a proximity sensor 212.

The display unit 210 includes an LCD (Liquid Crystal Display) module, an OLED (Organic Light Emitting Diodes) module, and an e-paper for visually expressing information. The display unit 210 may include touch sensing means for inputting data by a touch method. Hereinafter, the display unit 210 including the touch sensing unit will be referred to as a 'touch screen'. If any one of the touches on the touch screen 210 is touched, the contents corresponding to the touched position are input. The content input by the touch method may be a character or a number, an instruction in various modes, or a menu item that can be designated. The touch sensing means is formed in a translucent manner so that the display portion can be seen, and a structure for enhancing the visibility of the touch screen in a bright place may be included. 2A, the touch screen 210 occupies most of the front surface of the front case 201. [

The first sound output unit 211 may be implemented as a receiver for delivering a call sound to a user's ear or a loud speaker for outputting various alarm sounds or multimedia playback sounds.

The front camera unit 216 processes an image frame such as a still image or a moving image 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 210. [

The image frame processed by the front camera 216 can be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The front camera 216 may be provided in two or more depending on the use environment.

The signal input unit 217 is operated to receive a command for controlling the operation of the mobile terminal 200 and may include a plurality of input keys. The input keys may also be referred to as a manipulating portion and may be employed in any manner as long as the user has a tactile sense and operates in a tactile manner.

For example, a dome switch or touch screen capable of receiving a command or information by a push or touch operation of a user, a touch pad, or a wheel, a jog type or a joystick for rotating a key . The contents input by the signal input unit 217 can be variously set. For example, to enter start, end, scroll, and the like.

The proximity sensor 212 may be disposed in an inner region of a mobile terminal or a body of the touch screen, which is enclosed by a touch screen formed on the display unit 210. The proximity sensor 212 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 by using electromagnetic force or infrared rays. The proximity sensor 212 has a longer lifetime than the contact-type sensor and its utilization is also higher.

Examples of the proximity sensor 212 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.

An ear jack (not shown), which can insert a side key 214, interface units 215 and 225, an acoustic input unit 213, and an earphone plug, is disposed on the side surface of the front case 201.

The side key 214 may be collectively referred to as an operation unit and is capable of receiving a command for controlling the operation of the mobile terminal 200. The side key 214 may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression. The content input by the side key 214 can be variously set. For example, by the side key 214, it is possible to control the image input units 216 and 221, adjust the size of the sound output from the sound output unit 211, or switch the display unit 210 to the touch recognition mode Command can be input.

The sound input unit 213 may be implemented, for example, in the form of a microphone to receive a user's voice, other sounds, and the like.

The interface units 215 and 225 are paths for enabling the mobile terminal 200 related to the present invention to exchange data with an external device. For example, the interface units 215 and 225 may include a connection terminal for connecting to an earphone by wire or wireless, a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port, A wireless LAN port, etc.), or power supply terminals for supplying power to the mobile terminal 200. The interface units 215 and 225 may be implemented in the form of a socket for receiving an external card such as a Subscriber Identification Module (SIM) or a User Identity Module (UIM) or a memory card for storing information.

A power supply unit 300 and a rear camera unit 221 are disposed on the rear surface of the terminal body.

A flash (not shown) and a mirror (not shown) may be disposed adjacent to the rear camera unit 221. The flash illuminates the subject toward the subject when the subject is photographed by the rear camera unit 221.

The mirror allows the user to illuminate the user's own face or the like in the case where the user intends to photograph (self-photograph) himself / herself by using the rear camera unit 221. [

The rear camera unit 221 may have a photographing direction substantially opposite to that of the front camera unit 216 disposed on the front side and may be a camera having different pixels from the front camera unit 216. [

For example, the front camera unit 216 has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and transmit the face to the other party. The rear camera unit 221 photographs a general subject and immediately transmits It is preferable to have a high pixel. The front and rear camera units 216 and 221 may be installed in the terminal body so as to be rotatable or pop-upable.

The battery 240 supplies power to the mobile terminal 200. The battery 240 may be embedded in the terminal body or may be detached from the terminal body. The cross-sectional view of the battery cover 203 may be formed in an arc shape in correspondence with the arc shape of the battery built in the mobile terminal according to the embodiment of the present invention.

That is, the rear surface of the terminal body according to the embodiment of the present invention may be formed as a curved surface, and the center of the rear surface may be convex. In addition, the side surface of the terminal main body is formed to be relatively thin.

That is, the thickness of the side surface of the mobile terminal 200 is minimized to make the mobile terminal look slimmer, and the central portion of the rear surface is convexly formed.

Hereinafter, the structure of the mold release battery 240 of the present invention and the internal structure of the mobile terminal 200 for forming the rear surface convexly will be described.

3 is an exploded view of the mobile terminal of FIG. 2A according to one embodiment.

2A and FIG. 3, a circuit board 280 is disposed between the middle case 202 and the front case 201, and an antenna unit (not shown) (266) may be disposed.

Between the middle frame 202 and the battery cover 203, a battery for supplying power to the mobile terminal may be mounted.

The front case 201 is provided with a touch panel 310 and a display panel 320. The display panel 320 may be a liquid crystal display panel.

The display panel and the touch panel are fixed to the front case 201. As shown in the drawing, the touch panel 310 and the display panel 320 of the mobile terminal according to the embodiment of the present invention are integrally formed. That is, the touch panel 310 is attached to a lower portion of the display panel 320 of the mobile terminal, thereby forming the integrated display panel 320 of the touch panel 310.

The durability of the mobile terminal is improved by the integrated display panel 320 of the touch panel 310, and a space inside the mobile terminal can be secured.

The touch panel integrated type display panel 320 according to the exemplary embodiment of the present invention includes first and second conductive layers 312a and 312b (see FIG. 4) 2 conductive layers 312a and 312b are formed to be spaced apart from each other. In addition, the display panel 320 may be formed of a liquid crystal display panel that outputs a visual signal by refracting light according to the movement of the liquid crystal by the voltage.

Hereinafter, a specific structure of the touch panel 310 integrally formed on the display panel 320 will be described.

4 is an enlarged cross-sectional view of the touch panel integrated type display panel of Fig. 3 taken along the line A-A. 5 is a structural view of a touch panel integrated type display panel shown for explaining a touch panel and a flexible circuit board.

Referring to FIG. 4, the touch panel 310 is formed on the display panel 320. The upper portion of the touch panel 310 is exposed to the outside by the front case 201. When a user touches a specific region of the upper portion of the touch panel 310 exposed to the outside, a change in electrical pressure or electrostatic capacity occurs.

The display panel 320 may be a liquid crystal display panel. A liquid crystal display panel is a display device using a liquid that is formed between panels and whose arrangement direction is changed by a voltage applied.

The display panel 320 includes a color filter layer 321, a liquid crystal layer 322, a transistor layer 323, and first and second polarizing layers 325 and 326.

A transistor layer 323 is formed under the liquid crystal layer 322 to which the voltage is applied. The transistor layer is divided into a plurality of pixels and is formed to control the flow of the voltage. That is, the direction of the liquid crystal alignment is determined by controlling the flow of voltage to each pixel.

A color filter layer 321 is formed on the liquid crystal layer 322. Although not shown, a backlight (not shown) is disposed under the display panel 320 to provide light upward in the display panel 320.

The light passes through the liquid crystal of the liquid crystal layer 322 and reaches the color filter layer 321. The color filter layer 321 is formed with red, blue, and green color filters for each of the pixels, so that light is formed by combining at least one of the colors and output. Generally, the color filter layer 321 is formed by forming color filters on a base substrate.

First and second polarizing layers 325 and 326 are formed on the color filter layer 321 and the base substrate 324, respectively. The first and second polarizing layers 325 and 326 are formed to polarize light emitted from the backlight, and the first and second polarizing layers 325 and 326 polarize the light in the vertical direction . An adhesive layer 330 is formed on the second polarizing layer 326 and attached to the touch panel 310.

The touch panel 310 is integrally formed with the display panel 320 by the adhesive layer 330 and the display panel 320 includes a window 311, first and second conductive layers 312a and 312b, .

The window 311 is exposed to the outside of the front surface of the mobile terminal by the front case 201. The window 311 may be formed of tempered glass or the like so as to minimize damage from an external impact and recognize a user's touch. A user touches the window 311 to input a signal.

The first and second conductive layers 312a and 312b include a plurality of first and second conductive lines, respectively. The first conductive lines extend in a first direction and are arranged parallel to each other along a second direction intersecting with the first direction. The second conductive lines extend along the second direction and are arranged parallel to each other along the first direction. The first and second conductive lines may be formed to be vertical. A signal is input when the user touches the area where the first and second conductive lines intersect.

The first conductive layer 312a is formed on the lower surface of the window 311. [ That is, it is formed on a surface which is not exposed to the outside of the terminal main body. A plurality of first conductive lines are formed on the lower surface of the window 311 in the one direction by vapor deposition or the like. That is, a separate base substrate for forming the first conductive layer 312a is not required.

The second conductive layer 312b is spaced apart from the first conductive layer 312a. The second conductive layer 312b may be formed in the color filter layer 321. As described above, the color filter layer 321 is formed by forming a color filter on one surface of a base substrate. The second conductive layer 312b may be formed on the other surface of the base substrate of the color filter. The second conductive layer 312b is formed on the color filter layer 321 by deposition or the like.

The second polarizing layer 326 and the adhesive layer 330 are formed between the color filter layer 321 and the window 311. That is, the second polarizing layer 326 and the adhesive layer 330 may serve as insulation between the first and second conductive layers 312a and 312b.

When the display panel 320 including the window 311 formed with the first conductive layer 312a and the second conductive layer 312b formed on the color filter layer 321 is attached using the adhesive layer 330 A display panel 320 formed integrally with the touch panel 310 may be implemented.

Thus, there is no need for a separate insulating layer to serve as an insulation at the intersection of the two conductive lines. In addition, unlike the related art, a ground layer formed on the color filter layer and the polarizing layer of the display panel is not formed. That is, the second conductive line is formed in a space where a ground layer of a general display panel is formed.

Therefore, it is possible to prevent parasitic capacitance between the ground layer of the display panel and the touch panel, which are arranged to form a predetermined separation distance from each other. Therefore, it is possible to prevent noise generated between the display panel and the touch panel, thereby improving the performance of the touch panel.

The second conductive layer 312b may serve as a ground for the display panel 320. [ Hereinafter, the electrical connection between the first and second conductive layers 312a and 312b and the display panel 320 will be examined.

Referring to FIG. 5, the circuit board 280 is electrically connected to the first and second flexible circuit boards 281 and 282.

The first conductive lines of the first conductive layer 312a are connected to the first flexible circuit board 281 and the first flexible circuit board 281 is extended to be connected to the circuit board 280. Although not shown, a connection terminal for contacting the first flexible circuit board 281 may be formed on the circuit board 280.

The second conductive lines of the second conductive layer 312b are connected to the second flexible circuit board 282 and the second flexible circuit board 282 is extended to be connected to the circuit board 280. Although not shown, a connection terminal for contacting the second flexible circuit board 282 may be formed on the circuit board 280.

An electrical signal transmitted to the first flexible circuit board 281 and the second flexible circuit board 282 is controlled to generate an input signal due to a touch on the circuit board 280.

Meanwhile, at least one of the second conductive lines of the second conductive layer 312b may function as a ground of the display panel 320. That is, the switching element 283 may be formed on the circuit board 280 electrically connected to the second flexible circuit board 282.

When the display unit 210 of the mobile terminal is touched by the user, a signal is input to the first conductive line of the first conductive layer 312a intersecting at least one conductive line of the second conductive lines. The switching device 283 is connected to the second conductive line of the second conductive layer 312b and is connected to the display panel 320 so that the remaining conductive lines are not touched, So that the voltage of the display panel 320 is connected to at least one of the plurality of electrodes through which the voltage flows. And becomes a ground point of the display panel 320 as a ground.

That is, the switching device switches to a second state in which the second conductive lines are connected to the electrodes of the display panel 320 in a first state in which the touch senses the touch, thereby providing a ground point.

Therefore, since the second conductive line in the second state functions as the ground of the display panel 320, the noise generated in the display panel 320 itself can be reduced, thereby improving the quality of the display panel 320 have.

In addition, since the ground layer of the display panel 320 is not separately formed, the thickness of the display panel 320 can be reduced. In addition, since the second conductive lines are electrically connected to the first conductive lines of the first conductive layer 312a, the parasitic capacitance generated between the conductive layers can be prevented.

Since the first and second conductive layers 312a and 312b are formed directly on the window 311 and the color filter layer 321, a separate base substrate is not required and they are formed to extend in one direction in each layer. The process is simple.

FIG. 6 is a cross-sectional view of the touch panel integrated type display panel according to another embodiment of FIG. 3 taken along line A-A. Figure 7 is an enlarged view of the thin film transistor layer of Figure 6;

The touch panel integrated display panel according to the embodiment of FIGS. 6 and 7 may include substantially the same components as the touch panel integrated display panel of FIG. 5 except for the position where the second conductive layer 312b is formed have. Therefore, the same reference numerals are assigned to the same constituent elements, and redundant representations are omitted.

Referring to FIGS. 6 and 7, the second conductive layer 312b is formed in the thin film transistor layer 323.

The thin film transistor layer 323 includes a gate line 323a, a data line 323b and a thin film transistor T formed on a base substrate. Although not shown, a common electrode 323a, And a pixel electrode can be formed. The thin film transistor layer is the same as the thin film transistor layer provided in a general display panel.

The second conductive layer 312b is formed of a plurality of second conductive lines extending in a direction intersecting with the one direction and arranged parallel to each other in the one direction. The second conductive lines are formed in the thin film transistor layer.

Specifically, the second conductive lines are formed on the base substrate forming the thin film transistor layer, and may be formed adjacent to the gate line 323a. In other words, it can extend in the same direction as the direction in which the gate line 323a extends.

However, the second conductive lines may extend in a direction in which the data line 323b extends, and may be formed adjacent to the data line 323b. In this case, the first conductive lines are formed on one surface of the window 311 so as to intersect the second conductive line.

The second conductive lines may be formed by a method such as deposition in the manufacturing process of the gate and data lines 323a and 323b.

Since a separate base board for forming the first and second conductive layers 312a and 312b of the mobile terminal according to the embodiment of the present invention is unnecessary, slimness of the terminal main body can be realized. In addition, since the first and second conductive layers are not formed in a single layer on a single substrate, the manufacturing process is simplified.

In addition, since it is possible to prevent parasitic capacitance from occurring with the display panel, noise between the display panel and the touch panel can be prevented.

In addition, since the second conductive layer 312b can function as a ground of the display panel, the noise of the display panel can be reduced.

The mobile terminal described above can be applied to not only the configuration and method of the embodiments described above but also all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments It is possible.

Claims (11)

A window formed so as to constitute an external appearance of the terminal main body and to receive a signal by touch;
A first conductive layer including a plurality of first conductive lines extending in a first direction on a lower surface of the window and arranged in a second direction intersecting the first direction; And
And a second conductive layer disposed in a lower portion of the window and outputting visual information through the window and extending in the second direction and being arranged along the first direction, A display panel including a second conductive layer having a plurality of second conductive lines; And
And an adhesive layer formed between the display panel and the window to adhere the display panel to the window,
The display panel includes a color filter layer formed on a lower surface of the base substrate to realize a plurality of colors,
Wherein the second conductive line is formed on the upper surface of the base substrate in a direction crossing the first conductive line and is disposed on the color filter layer. delete delete The mobile terminal of claim 1, wherein the adhesive layer is disposed between the first and second conductive layers and is formed of an insulating material to insulate the first and second conductive lines. The display device according to claim 1, further comprising: a circuit board connected to the display panel to transmit and receive signals of the display panel; And
And a flexible circuit board electrically connecting the second conductive line and the circuit board to connect the second conductive line to the circuit board. 6. The method of claim 5,
Wherein the second conductive line is electrically connected to the first conductive line and a signal is generated when a point at which the first conductive line intersects with the second conductive line is touched. 6. The mobile terminal of claim 5, wherein the second conductive layer is formed to ground the voltage of the display panel, except the conductive line that is touched among the plurality of second conductive lines. 8. The method of claim 7,
Wherein the display panel includes at least one electrode,
And at least one switching element connected to the plurality of second conductive lines for switching the second conductive line to be electrically connected to the electrode. 9. The method of claim 8,
And a switching element connected to the other of the second conductive lines switches to connect the electrode and the second conductive line when a signal is inputted to any one of the second conductive lines by the touch. . A window formed so as to constitute an external appearance of the terminal main body and to receive a signal by touch;
A first conductive layer including a plurality of first conductive lines extending in a first direction on a lower surface of the window and arranged in a second direction intersecting the first direction; And
And a second conductive layer disposed in a lower portion of the window and outputting visual information through the window and extending in the second direction and being arranged along the first direction, A display panel including a second conductive layer having a plurality of second conductive lines; And
And an adhesive layer formed between the display panel and the window and adapted to adhere between the display panel and the window,
Wherein the display panel includes a liquid crystal layer formed to refract light provided in the light source portion and a transistor layer formed to control a voltage provided to the liquid crystal layer,
Wherein the second conductive line is formed on a base substrate forming the transistor layer and is formed adjacent to a gate line, and the first conductive line and the second conductive line are disposed in directions crossing each other. terminal. 11. The method of claim 10,
A circuit board that transmits and receives signals of the display panel and is electrically connected to the second conductive line; And
Wherein the first conductive line is connected to the circuit board by a flexible circuit board to generate a touch signal together with the second conductive line.

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