KR101717107B1 - Mobile terminal and dispaly module thereof - Google Patents

Abstract

The present invention relates to a portable terminal configured to be input in a touch manner, A transparent touch sensor layer formed at a lower portion of the cover window and configured to detect a touch applied to a surface of the cover window; A display module positioned below the touch sensor layer and including a polarizing film layer on the upper side; And a light-transmitting shield layer directly formed on the upper surface of the polarizing layer and formed to be conductive.

Description

[0001] MOBILE TERMINAL AND DISPLAY MODULE THEREOF [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable terminal configured to be input by a touch method and a display module thereof.

A portable terminal is a portable device that is portable and has one or more functions such as voice and video call function, information input / output function, and data storing function.

As the functions are diversified, the mobile terminal has complicated functions such as photographing and photographing of movies, playing music or moving picture files, receiving games, broadcasting, etc. These devices are integrally mounted and are equipped with a multimedia player .

In order to implement complex functions in multimedia devices, various new attempts have been made in terms of hardware or software. For example, a user interface environment is provided for a user to easily and conveniently search for or select a function.

To this end, the portable terminal may be equipped with a touch sensing sensor so as to directly input or operate items output from the display or selectable functions. For example, in the case of the electrostatic type, the touch sensing sensor senses a touch by a change in capacitance. Therefore, due to the noise generated in the display disposed inside, May be interrupted. To this end, a shield layer may be disposed between the touch sensing sensor and the display, which may cause the overall thickness of the portable terminal to increase.

In view of the above, it is possible to prevent the noise generated in the display module from reaching the touch sensor layer which is a means of touch sensing, and by such a structure, it is possible to prevent an increase in the overall thickness of the device and to simplify the manufacturing process do.

In order to solve the above problems, a cover window; A transparent touch sensor layer formed at a lower portion of the cover window and configured to detect a touch applied to a surface of the cover window; A display module positioned below the touch sensor layer and including a polarizing film layer on the upper side; And a light-transmitting shield layer directly formed on the upper surface of the polarizing layer and formed to be conductive.

The shield layer may be formed of indium tin oxide (ITO) deposited directly on the upper surface of the polarizing film layer.

The touch sensor layer may be formed by ITO deposited directly on the bottom surface of the cover window.

The touch sensor layer may include a transparent base film, and ITO that is deposited on the base film and the base film in a predetermined pattern.

An adhesive layer may be further provided between the base film and the shield layer so that the base film and the cover window are integrated with each other.

The adhesive layer may be formed by an ultraviolet curable adhesive or OCA (Optically Clear Adhesive).

The present invention also provides a display device comprising: a cover window; A transparent touch sensor layer formed on a lower portion of the cover window and configured to detect a touch applied to a surface of the cover window; A display module positioned below the touch sensor layer and including a polarizing film layer on the upper side; And a transparent conductive adhesive layer disposed between the touch sensor layer and the display module such that the touch sensor layer is integral with the display module and shielding noise generated by the display module, . ≪ / RTI > In this case, the touch sensor layer may be formed by ITO deposited directly on the lower surface of the cover window.

The touch sensor layer may include ITO deposited on the base film and the base film in a predetermined pattern.

And an adhesive layer for bonding the cover window and the ITO so that the base film is integral with the cover window.

And a flexible PCB for connecting the touch sensor layer, wherein the flexible PCB includes an upper layer connection portion extending to an upper surface of the base film and a lower layer connection portion extending to the conductive adhesive layer located on a lower surface of the base film, Lt; / RTI >

According to another aspect of the present invention, there is provided a display module mounted on a portable terminal, the display module including: a thin film transistor (Thin Film Transistor) layer formed to realize an image; A polarizing film layer formed on an upper surface of the thin film transistor layer; And a shield layer formed directly on the upper surface of the polarizing film layer and shielding noise generated by the thin film transistor.

In addition, the display module mounted on the portable terminal may include: a cover window; A transparent touch sensor layer formed at a lower portion of the cover window and configured to detect a touch applied to a surface of the cover window; A polarizing film layer disposed on the touch sensor layer and a lower portion; A thin film transistor (Thin Film Transistor) layer disposed under the polarizing film layer; And a light-transmitting conductive adhesive layer disposed between the touch sensor layer and the polarizing film layer to shield noise generated by the thin film transistor layer.

As described above, since the shield layer is formed directly on the polarizing film layer or the shield layer is replaced by the conductive adhesive layer, it is possible to solve the problem that the thickness is inevitably increased to form the shield layer, It is possible to form a structure that can completely fill the spaces between the modules, thereby improving the visibility of the display.

1 is a block diagram of a portable terminal according to the present invention;
2 is a front perspective view of a mobile terminal equipped with a window related to the present invention.
FIG. 3 is a rear perspective view of the portable terminal shown in FIG.
4 is a cross-sectional view of a display module according to the first embodiment related to the present invention.
5 is a cross-sectional view of a display module according to a second embodiment related to the present invention
6 is a cross-sectional view of a display module according to a third embodiment related to the present invention
7 is a cross-sectional view of a display module according to a fourth embodiment related to the present invention

Hereinafter, a window of a display device related to the present invention and a portable terminal having the window will be described in detail with reference to the drawings. The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves.

The portable terminal described in this specification includes a mobile terminal such as a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP) A fixed terminal such as a TV, a desktop computer, and the like. In the following description, it is assumed that the mobile terminal is a mobile terminal. However, it will be understood by those skilled in the art that the configuration according to the following description may be applied to a fixed terminal such as a digital TV, a desktop computer, or the like, except when it is applicable only to a mobile terminal.

1 is a block diagram of a portable terminal according to the present invention.

The portable 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 unit 160, A controller 170, a controller 180, a power supply 190, and the like. 1 shows a mobile terminal having various components. However, not all illustrated components are required. A mobile terminal may be implemented by more components than the illustrated components, or a mobile terminal may be implemented by fewer components.

The components will be discussed in turn.

The wireless communication unit 110 may include one or more components for wireless communication between the wireless terminal 100 and another wireless communication system or wireless communication between the wireless terminal 100 and the network in which the wireless 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 be 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 server and transmitting the generated broadcast signals and / or broadcast- The broadcast-related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. 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 also be provided through a mobile communication network, in which case it may be received by the mobile communication module 112.

Broadcast-related information can 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).

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems. In particular, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) ), Digital Video Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 is configured to be suitable for all the broadcasting systems that provide broadcast signals 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 unit 160.

In addition, 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. Here, 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 the wireless Internet module 113 can be built in or externally. 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 the short distance communication technology.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. A typical example of the location information module is a Global Position System (GPS) module. According to the current technology, the GPS module 115 calculates distance information and accurate time information from three or more satellites, and then applies a trigonometric method to the calculated information to calculate three-dimensional current position information according to latitude, longitude, Can be accurately calculated. At present, a method of calculating position and time information using three satellites and correcting an error of position and time information calculated using another satellite is widely used. In addition, the GPS module 115 can calculate speed information by continuously calculating the current position in real time.

An audio / video (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 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. Then, 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. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

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. The microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in the process of 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. Particularly, when the touch pad has a mutual layer structure with the display unit 151 described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, the orientation of the mobile terminal, To generate a sensing signal. For example, when the portable terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. The sensing unit 140 is responsible for sensing whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like.

The interface unit 170 serves as an interface with all the external devices connected to the portable terminal 100. 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, Video input / output (I / O) ports, earphone ports, and the like. Here, the identification module is a chip that stores various information for authenticating the usage right of the mobile terminal 100, and includes a user identification module (UIM), a subscriber identity module (SIM) ), A Universal Subscriber Identity Module (" USIM "), and the like. In addition, an apparatus having an identification module (hereinafter referred to as 'identification device') 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 170 receives data from an external device or receives power from the external device, transfers the data to each component in the portable terminal 100, or transmits data in the portable terminal 100 to an external device.

The interface unit 170 may be a path 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 the user It can be a passage to be transmitted to the mobile terminal. The various command signals or power input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal, and may include a display unit 151, an audio output module 152, and an alarm output module 153 .

The display unit 151 displays and outputs the information processed by the portable terminal 100. For example, when the mobile terminal is in the call mode, a user interface (UI) or a graphical user interface (GUI) associated with a call is displayed. And displays the captured or / and received image or UI and GUI.

Meanwhile, as described above, when the display unit 151 and the touch sensing sensor 133 have a mutual layer structure to constitute a touch screen, the display unit 151 may be used as an input device in addition to the output device. The display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display 3D display). Some of these displays can be configured to be transparent so that they can be viewed from outside. This can be referred to as a transparent display. A typical example of the transparent display is a transparent LCD or the like. In addition, there may be two or more display units 151 according to the embodiment of the portable terminal 100. The touch screen can be configured to detect not only the touch input position and area but also the touch input pressure.

On the other hand, a proximity sensor may be disposed inside or near 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. Therefore, the proximity sensor has a considerably longer life than the contact-type sensor and its utilization is also quite high. Examples of proximity sensors 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.

In the high-frequency oscillation-type proximity sensor, the oscillation amplitude of the rear oscillation circuit is attenuated or stopped so that the sensing object approaches the sensor sensing surface in the state of oscillating the high frequency of the stationary wave in the oscillation circuit. Is detected. Therefore, even if any non-metallic substance comes between the high frequency oscillation proximity sensor and the sensing object, the proximity switch can detect the sensing object to be detected without interference of the object.

Even if the proximity sensor is not mounted, it may be configured to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer if the touch screen is electrostatic.

Thus, in the case where the pointer is not actually touched but located close to the touch screen, the position of the pointer and the distance between the pointer and the touch screen can be detected. Hereinafter, for the sake of convenience of explanation, the act of causing the pointer to be located on the touch screen and recognizing that the pointer is located on the touch screen is referred to as "proximity touch" Quot; contact touch ". Further, the position where the proximity touch is performed with the pointer on the touch screen means a position where the pointer corresponds vertically to the touch screen when the pointer is proximity-touched.

The proximity sensor detects the rear face, the proximity touch and the proximity touch pattern (for example, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, Information corresponding to the touch operation and the proximity touch pattern can be output on the touch screen.

The audio output module 152 outputs audio data received from the wireless communication unit 110 or stored in the memory unit 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 outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, and the like) performed in the portable terminal 100. The sound output module 152 may include a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the portable 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 an audio signal or a video signal. For example, it is possible to output a signal in a vibration mode. When the call signal is received or a message is received, the alarm unit 153 can output a vibration to notify it. Alternatively, when the key signal is input, the alarm unit 153 can output the vibration by the feedback to the key signal input. The user can recognize the occurrence of an event through the vibration output as described above. Of course, a signal for notifying the occurrence of an event may also be output through the display unit 151 or the audio output module 152.

The memory unit 160 may store a program for processing and control of the controller 180 and may include a function for temporarily storing input / output data (e.g., a phone book, a message, a still image, . ≪ / RTI > In addition, the memory unit 160 may store data related to vibration and sound of various patterns output upon touch input on the touch screen.

The memory unit 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 random access memory (SRAM), a read only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM) , An optical disc, and the like. In addition, the portable terminal 100 may operate a web storage that performs a storage function of the memory unit 160 on the Internet.

The control unit 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. In addition, 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 control unit 180 is used to mean the function of the inclination control unit described above.

The control unit 180 can perform a pattern recognition process for recognizing the 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.

2 is a front perspective view of a portable terminal equipped with a window related to the present invention.

The disclosed mobile terminal 100 has 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 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 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.

A display unit 151, a first sound output unit 152, a first image input unit 121, and the like may be disposed on a front surface of the terminal body.

The display unit 151 includes an LCD (Liquid Crystal Display) module, an OLED (Organic Light Emitting Diodes) module, and an e-paper for visually expressing information. In addition, the display unit 151 may include touch sensing means for inputting by a touch method. Accordingly, if any one of the touches on the display unit 151 is touched, the contents corresponding to the touched position are input. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like. The touch sensing means is formed in a light-transmissive manner so that the display unit 151 can be seen, and a structure for enhancing the visibility of the touch screen in a bright place may be included. Referring to FIG. 2, the display unit 151 occupies most of the front surface of the front case 102.

A window 200 is provided outside the display unit 151 to protect the display unit 151 from external influences and to be in contact with fingers for touch input. In this window 200, as described below, the fingerprint of the finger is minimized.

The first sound output unit 152 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.

A side key 132, an interface unit 170, and an acoustic input unit 122 are disposed on a side surface of the terminal body.

The side key 132 may be collectively referred to as an operation unit, and a command for controlling the operation of the portable terminal 100 may be input. The side key 132 may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression. The contents input by the side key 132 can be variously set. For example, by the side key 132, a command such as control of the image input unit 125, adjustment of the size of sound output from the sound output units 152 and 154, or switching to the touch recognition mode of the display unit 151 Input can be received.

The sound input unit 122 may be implemented in the form of a microphone, for example, to receive a user's voice, other sounds, and the like.

The interface unit 170 may be disposed on a side surface of the terminal body. The interface unit 170 enables the portable terminal 100 related to the present invention to exchange data with an external device. For example, the interface unit 170 may be a wired or wireless connection terminal for connecting to an earphone, a port for short-range communication (for example, an IrDA port, a Bluetooth port, a wireless LAN port A wireless LAN port) or the like, or power supply terminals for supplying power to the portable terminal 100. The interface unit 170 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

3 is a rear perspective view of the portable terminal shown in FIG.

Referring to FIG. 3, a second image input unit 125 may be additionally mounted on the rear surface of the terminal body. The second image input unit 125 may have a photographing direction substantially opposite to that of the first image input unit 121 disposed on the front side of the terminal body and may be a camera having different pixels from the first image input unit 121.

For example, the first image input unit 121 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 of the user to the other party. The second image input unit 125 photographs a general object It is preferable to have a high pixel because it is often not transmitted. The image input unit 125 may be installed in the terminal body such that the image input unit 125 can be rotated or popped up.

A flash 127 and a mirror 126 are additionally disposed adjacent to the second image input unit 125. The flash 127 illuminates the subject when the subject is photographed by the camera 126. The mirror 126 allows the user to illuminate his / her face or the like when the user intends to take a picture of himself / herself (self-photographing) using the second image input unit 125.

A second sound output unit 154 may be additionally disposed on the rear surface of the terminal body. The second sound output unit 154 may implement a stereo function together with the first sound output unit 152 disposed on the front surface of the terminal body and may be used for implementing a speakerphone mode in a call.

A power supply unit 190 for supplying power to the portable terminal 100 is mounted on the rear surface of 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.

4 is a cross-sectional view of a display module according to the first embodiment related to the present invention.

The illustrated example includes a cover window 210, a touch sensor layer 230, an adhesive layer 240, a shield layer 250, an upper polarizing film layer 223, a thin film transistor layer 221, a lower polarizing film layer 222 ).

The cover window 210 is formed to provide a surface to which a touch can be applied, and protects the internal touch sensor layer 230 and the like. The cover window 210 may be formed of translucent resin or glass (or tempered glass) and may include an opaque bezel on its inner surface to define the output area of the display module 220. Such a bezel may be embodied by an opaque pigment or the like dispersed in the print or cover window 210. The surface of the cover window 210 may include a light-transmitting fine pattern (protrusion) to prevent the fingerprint of the finger being touched to the cover window 210 from remaining. These fine patterns (protrusions) have regular distances and heights.

The touch sensor layer 230 includes a pattern for sensing a touch applied to the cover window 210, for example, an X pattern, a Y pattern, and the like. Such a pattern may be made of a light-transmitting conductive material, for example, a material such as indium tin oxide (ITO). The X pattern and the Y pattern may be respectively located on the upper and lower surfaces of one sheet of insulating sheet, or on the same surface of the upper or lower surface of the insulating sheet. When an X pattern or a Y pattern is located on the same plane, an insulation ball may be included at the intersection of the X pattern and the Y pattern. On the other hand, it is possible to form a single line (for example, a zigzag or a meander line shape) instead of a method including two patterns in different directions such as an X pattern or a Y pattern.

The touch sensor layer 230 may be varied in accordance with the method. However, when the touch sensor layer 230 is configured to operate in the electrostatic mode, the noise generated in the thin film transistor layer 221 inside the shield layer 250 is blocked Can be expected.

The thin film transistor layer 221 forms an electric field by the electrodes it has for forming an image and induces a change in the arrangement of the liquid crystal by an electric field. The upper and lower portions of the thin film transistor layer 221 include polarizing film layers 222 and 223 so as to realize color.

In the present disclosure, the shield layer 250 is formed directly on the upper polarizing film layer 223, and no separate base material is used for forming the shield layer 250. The shield layer 250 is formed of a transparent conductive material such as ITO, which is formed on the entire surface of the upper polarizing film layer 223. The change in the electric field generated in the thin film transistor layer 221 is transmitted to the shield layer 250 ). ≪ / RTI >

In terms of manufacturing, the shield layer 250 may be provided in the manufacturing process of the display module 220 rather than attaching to the touch sensor layer 230.

The shielding layer 250 may be formed directly on the upper polarizing film layer 223 of the display module 220 and may have an air gap of sufficient distance to obtain a noise reduction effect generated in the display module 220, It is not necessary to provide a separate insulating sheet on which the layer is to be formed. Referring to FIG. 4, the touch sensor layer 230 and the shield layer 250 are directly attached by an insulating adhesive layer 240. If the touch sensor layer 230 is attached to the cover window 210, the display module 220 can be formed in an integral shape including the cover window 210 and the touch sensor layer 230.

In order to prevent deterioration of the visibility, the adhesive layer 240 may be formed by a transparent ultraviolet curable adhesive or OCA (Optically Clear Adhesive). Since the air gap between the touch sensor layer 230 and the shield layer 250 does not remain by the adhesive layer 240, the visibility can be increased and the thickness of the portable terminal 100 can be reduced accordingly.

5 is a cross-sectional view of a display module according to a second embodiment of the present invention.

The illustrated example includes a cover window 210, an insulating adhesive layer 270, an ITO pattern 231, a base film 232, a light-transmitting conductive adhesive layer 260, a display module 220, and the like.

The base film 232 in which the ITO pattern 231 is formed on the cover window 210 is made of an insulating material And is adhered by the adhesive layer 270.

A conductive adhesive layer 260 is disposed between the base film 232 and the display module 220 in order to block the noise generated in the display module 220 by the ITO pattern 231. The conductive adhesive layer 260 is, for example, a conductive adhesive material such as a conductive polymer or a conductive material such as Polysiloxane, which is adhesive and conductive. This conductive adhesive layer 260 may serve as a film capable of blocking the noise of the display module 220, which is another variation of the shield layer 250 of FIG. 3 in this example. Since the conductive adhesive layer 260 is much thicker than the shield layer 250, the blocking effect can be improved accordingly.

6 is a cross-sectional view of a display module according to a third embodiment of the present invention.

The illustrated example includes a cover window 210, an ITO pattern 231, an insulating adhesive layer 270, a light-transmitting conductive adhesive layer 260, and a display module 220.

The ITO pattern 231 is formed directly on the lower surface of the cover window 210. The ITO pattern 231 is formed directly on the lower surface of the cover window 210. [ Therefore, since the same layer as the base member is not required, it contributes to reduction in thickness.

The cover window 210 in which the ITO pattern 231 is formed is directly attached to the display module 220 by the insulating adhesive layer 270 and the conductive adhesive layer 260. In this case, the cover window 210 is formed integrally with the display module 220.

The insulating adhesive layer 270 is applied to prevent the ITO pattern 231 from coming into direct contact with the conductive adhesive layer 260, and may be realized by ultraviolet curable resin or OCA.

The conductive adhesive layer 260 acts as a film capable of blocking the noise of the display module 220, for example, a conductive polymer such as a conductive polymer or a conductive material such as Polysiloxane mixed with acrylic adhesive.

7 is a cross-sectional view of a display module according to a fourth embodiment related to the present invention.

In this example, a connection structure of the flexible PCB 280 for connecting the touch sensor layer 230 is shown. The touch sensor layer 230 is formed of an ITO pattern 231 and a transparent base film 232 and an insulating adhesive layer 270 is applied between the cover window 210 and the ITO pattern 231.

7, the flexible PCB 280 includes an upper layer connection portion 281 extending to the upper surface of the base film 232 and a lower layer connection portion 282 extending to the conductive adhesive layer 260 located on the lower surface of the base film 232 ). Layer connection portion 282 is attached at the same time as the formation of the conductive adhesive layer 260 which is a shield layer and the upper layer connection portion 281 is attached to the attached lower layer connection portion 282 to form one flexible PCB 280, Respectively. In this case, the conductive portion is exposed so that the lower layer connection portion 282 can be directly connected to the conductive adhesive layer 260 in the bonding process.

The above-described portable terminal and its display module are not limited to the configuration and method of the above-described embodiments, but the embodiments may be modified so that all or some of the embodiments may be selectively And may be configured in combination.

Claims (13)

delete delete delete delete delete delete Cover window;
A transparent touch sensor layer formed on a lower portion of the cover window and configured to detect a touch applied to a surface of the cover window;
A display module positioned below the touch sensor layer and including a polarizing film layer on the upper side;
A transparent conductive adhesive layer adhered between the touch sensor layer and the display module so that the touch sensor layer is integrated with the display module and shielding noise generated by the display module; And
And a flexible PCB having an upper layer connection portion extending to one surface of the touch sensor layer and a lower layer connection portion extending to the transparent conductive adhesive layer,
Wherein the touch sensor layer and the light transmitting conductive adhesive layer are electrically connected to the circuit board through the upper layer connection portion and the lower layer connection portion, respectively. 8. The method of claim 7,
Wherein the touch sensor layer is formed by ITO deposited directly on the lower surface of the cover window. 8. The method of claim 7,
Wherein the touch sensor layer comprises a base film and ITO deposited on a top surface of the base film in a predetermined pattern. 10. The method of claim 9,
Further comprising an adhesive layer for bonding the cover window and the ITO so that the base film is integral with the cover window. delete delete delete

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