KR20120021721A - Mobile terminal and dispaly module thereof - Google Patents

Abstract

PURPOSE: A mobile terminal and a display module thereof are provided to directly form a shield layer on a polarized film layer and function as a role of the shield layer by a conductive adhesive layer. CONSTITUTION: A touch sensor layer(230) of a light transmitting feature is formed in a lower part of a cover window(210). The touch sensor layer senses a touch on a surface of the cover window. A display module(220) is located in a lower part of the touch sensor layer. A polarized film layer is placed on the display module. A light transmitting shield layer(250) is directly formed on the polarized layer.

Description

Mobile terminal and display module thereof {MOBILE TERMINAL AND DISPALY MODULE THEREOF}

The present invention relates to a mobile terminal and a display module thereof configured to input by a touch method.

A portable terminal is a portable device that is portable and has one or more functions such as voice and video calling, information input and output, and data storage.

As the functions are diversified, the mobile terminal has complicated functions such as taking a picture or a video, playing a music or a video file, playing a game, receiving a broadcast, and the like. It also implements.

Many new attempts are being applied to these multimedia devices in terms of hardware or software to implement complex functions. For example, a user interface environment is provided for a user to search for or select a function easily and conveniently.

To this end, the mobile terminal may also be equipped with a touch sensor so that an item or a selectable function output from the display can be immediately input or operated. The touch sensor may be classified into various types according to the operation method. For example, in the case of the capacitive type, since the touch is sensed by a change in capacitance, the touch input may be caused by noise generated in the display disposed therein. May interfere with normal operation. To this end, a shield layer may be disposed between the touch sensor and the display, which may cause an increase in overall thickness of the portable terminal.

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

In order to solve the above problems, the cover window; A transmissive touch sensor layer formed under the cover window and configured to sense 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 thereon; And a light-transmissive shield layer formed directly on an upper surface of the polarizing layer and formed to be conductive.

The shield layer may be formed by indium tin oxide (ITO) directly deposited 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 light-transmissive base film and ITO deposited in a predetermined pattern on the base film and the top surface of the base film.

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.

The adhesive layer may be formed by an ultraviolet curable adhesive or an optically clear adhesive (OCA).

The present invention also provides a cover window; A transmissive touch sensor layer formed under the cover window and configured to sense 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 thereon; And a transmissive conductive adhesive layer disposed between the touch sensor layer and the display module so that the touch sensor layer is integral with the display module, and formed to block noise formed by the display module. It can also be implemented. In this case, 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 ITO deposited in a predetermined pattern form on the base film and the top surface of the base film.

An adhesive layer may be further provided to bond the cover film and the ITO such that the base film is integrated with the cover window.

A flexible PC is further provided for connecting the touch sensor layer, and the flexible PC includes an upper layer connection part extending to an upper surface of the base film and a lower layer connection part extending to the conductive adhesive layer located on a lower surface of the base film. Can be done.

The present invention also provides a display module mounted on a portable terminal, the display module comprising: a thin film transistor (Thin Flim Transistor) layer formed to implement an image; A polarizing film layer formed on an upper surface of the thin film transistor layer; And a shielding layer formed directly on the upper surface of the polarizing film layer and including a shield layer to block noise formed by the thin film transistor.

In addition, a display module mounted on a portable terminal, the display module, the cover window; A transmissive touch sensor layer formed under the cover window and configured to sense a touch applied to a surface of the cover window; A polarizing film layer disposed below the touch sensor layer; A thin film transistor (Thin Flim Transistor) layer disposed under the polarizing film layer; And a transmissive conductive adhesive layer disposed between the touch sensor layer and the polarizing film layer and formed to block noise formed by the thin film transistor layer.

As described above, since the shield layer is directly formed on the polarizing film layer or replaces the role of the shield layer by the conductive adhesive layer, the thickness inevitably increased to form the shield layer, and the cover window and the display You can create a structure that completely fills the space between the modules, which can improve the visibility of the display.

1 is a block diagram of a portable terminal related to the present invention.
2 is a front perspective view of a mobile terminal equipped with a window according to the present invention;
3 is a rear perspective view of the mobile terminal shown in FIG.
4 is a cross-sectional view of a display module according to a 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 and a portable terminal having the same according to the present invention will be described in detail with reference to the accompanying drawings. The suffixes "module" and "unit" for components used in the following description are merely given in consideration of ease of preparation of the present specification, and do not impart any particular meaning or role by themselves.

The mobile terminal described herein 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 navigation device, and the like. There are fixed terminals such as TVs, desktop computers, and the like. In the following description, it is assumed that the portable terminal is a mobile terminal. However, it will be readily apparent to those skilled in the art that the configuration according to the following description may also be applied to fixed terminals such as digital TVs, desktop computers, etc., except when applicable only to mobile terminals.

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

The mobile terminal 100 may include a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory unit 160, and an interface. The unit 170, the controller 180, and the power supply unit 190 may be included. 1 shows a mobile terminal having various components. However, not all illustrated components are required. The mobile terminal may be implemented by more components than the illustrated components, or the mobile terminal may be implemented by fewer components.

The following describes the components in order.

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

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel. The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits a broadcast signal and / or broadcast related information or a server that receives a pre-generated broadcast signal and / or broadcast related information and transmits the same to a terminal. 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 not only a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, but also a broadcast signal having a data broadcast signal combined with a TV broadcast signal or a radio broadcast signal.

Meanwhile, broadcast related information may be provided through a mobile communication network, and in this case, may be received by the mobile communication module 112.

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

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems, and in particular, digital multimedia broadcasting-terrestrial (DMB-T), digital multimedia broadcasting-satellite (DMB-S), and media forward link only (MediaFLO). ), Digital broadcast signals may be received using digital broadcasting systems such as DVB-H (Digital Video Broadcast-Handheld) and ISDB-T (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 is configured to be suitable for all broadcast systems providing broadcast signals as well as the digital broadcast 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 according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.

The wireless Internet module 113 is a module for wireless Internet access, and the wireless Internet module 113 can be built in or externally. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

The short range communication module 114 refers to a module for short range communication. As a short range communication technology, Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and the like may be used.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. A representative example of the location information module is a GPS (Global Position System) 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 triangulation to the calculated information, so that three-dimensional current position information according to latitude, longitude, and altitude is obtained. Can be calculated accurately. Currently, 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 may 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. The processed image frame may be displayed on the display unit 151.

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. 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 by a microphone in a call mode, a recording mode, a voice recognition mode, etc., and processes the external sound signal into electrical voice data. The processed voice data may be converted into a form transmittable to the mobile communication base station through the mobile communication module 112 and output in the call mode. The microphone 122 may implement various noise removing algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 130 generates input data for the user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like. In particular, when the touch pad has a mutual layer structure with the display unit 151 described later, this may be referred to as a touch screen.

The sensing unit 140 controls the operation of the mobile terminal 100 by detecting a current state of the mobile terminal 100 such as an open / closed state of the mobile terminal 100, a position of the mobile terminal 100, a bearing of the mobile terminal, and the like. To generate a sensing signal. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, the sensing unit 140 is responsible for a sensing function related to whether the power supply unit 190 is supplied with power or whether the interface unit 170 is coupled to an external device.

The interface unit 170 serves as an interface with all external devices connected to the mobile 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 types of information for authenticating the usage right of the mobile terminal 100, and includes a user identification module (UIM) and a subscriber identify 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 and transmits the data to each component inside the mobile terminal 100 or transmits the data inside the mobile terminal 100 to an external device.

In addition, the interface unit 170 is a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user. It may be a passage that is delivered to the mobile terminal. Various command signals or power input from the cradle may be operated as signals for recognizing that the mobile terminal is correctly mounted on the cradle.

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

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

Meanwhile, as described above, when the display unit 151 and the touch sensor 133 have a mutual layer structure and are configured as 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 seen from the outside. This may be referred to as a transparent display. A representative example of the transparent display includes a transparent LCD. In addition, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. The touch screen may be configured to detect a touch input pressure as well as a touch input position and area.

Meanwhile, 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 an object present in the vicinity without using a mechanical contact by using an electromagnetic force or infrared rays. Thus, proximity sensors have a considerably longer life than contact sensors and their utilization is also quite high. Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor.

In the high frequency oscillation type proximity sensor, the oscillation amplitude of the rear oscillation circuit is attenuated or stopped when the sensing object approaches the sensor sensing surface while oscillating the high frequency of the forward wave in the oscillation circuit, and converts this change into an electrical signal to sense the object. The presence or absence of a will be detected. Therefore, even if a non-metallic material 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, the touch screen may be configured to detect proximity of the pointer by a change in electric field according to proximity of the pointer when the touch screen is capacitive.

Therefore, when the pointer is not in contact but is in close proximity on the touch screen, the position of the pointer and the distance between the pointer and the touch screen may be detected. Hereinafter, for convenience of explanation, the act of allowing the pointer to be located close to the touch screen to recognize that the pointer is located on the touch screen is referred to as a "proximity touch", and the act of actually touching the pointer on the touch screen. Will be referred to as "contact touch". In addition, the position of the proximity touch with the pointer on the touch screen refers to a position where the pointer is perpendicular to the touch screen when the pointer is in close proximity touch.

Using the proximity sensor, the device detects proximity touch and proximity touch patterns (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.) and detects the detected proximity. Information corresponding to the touch operation and the proximity touch pattern may be output on the touch screen.

The sound 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, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 152 outputs a sound signal related to a function (eg, a call signal reception sound, a message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying occurrence of an event of the portable terminal 100. Examples of events occurring in the mobile terminal include call signal reception, message reception, key signal input, and touch input. The alarm unit 153 may output a signal for notifying occurrence of an event in a form other than an audio signal or a video signal. For example, the signal may be output in the form of vibration. When a call signal is received or a message is received, the alarm unit 153 may output a vibration to inform this. Alternatively, when a key signal is input, the alarm unit 153 may output a vibration in response to the key signal input. The user can recognize the occurrence of an event through the vibration output as described above. Of course, the signal for event occurrence notification may be output through the display unit 151 or the voice output module 152.

The memory unit 160 may store a program for processing and controlling the controller 180 and may temporarily store input / output data (for example, a phone book, a message, a still image, a video, etc.). You can also do In addition, the memory unit 160 may store data regarding vibration and sound of various patterns output when a touch input on the touch screen is performed.

The memory unit 160 may include a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), Random Access Memory (RAM) Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM) magnetic memory, Magnetic disk It may include at least one type of storage medium of the optical disk. In addition, the mobile 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, perform related control and processing for voice calls, data communications, video calls, 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 controller 180 or may be implemented separately from the controller 180. The controller 180 is used to encompass the functions of the tilt controller described above.

The controller 180 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on a touch screen as text and an image, respectively.

The power supply unit 190 receives an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

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

The disclosed portable terminal 100 has a terminal body in the form of a bar. However, the present invention is not limited thereto and may be applied to various structures such as a slide type, a folder type, a swing type, a swivel type, and two or more bodies are coupled to be relatively movable.

The terminal body includes a case (which may be referred to as a casing, a housing, a cover, etc.) forming an external appearance. The case may be divided into a front case 101 and a rear case 102. Various electronic components are built in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be further disposed between the front case 101 and the rear case 102. The cases may be formed by injecting synthetic resin or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the first sound output unit 152, the first image input unit 121, and the like may be disposed in front of the terminal body.

The display unit 151 includes a liquid crystal display (LCD) module, an organic light emitting diodes (OLED) module, an e-paper, and the like that visually express information. In addition, the display unit 151 may include a touch sensing means to be input by a touch method. Therefore, if there is a touch on any part of the display unit 151, the content corresponding to the touched position is input. The content input by the touch method may be letters or numbers or menu items that can be indicated or designated in various modes. The touch sensing means is formed to be translucent so that the display unit 151 can be seen, and may include a structure for increasing the visibility of the touch screen in a bright place. According to FIG. 2, the display unit 151 occupies most of the front surface of the front case 102.

The outside of the display unit 151 is provided with a window 200 that protects the display unit 151 from the outside while the finger touches for touch input. As described below, the window 200 is formed so as to minimize the fingerprint of the finger.

The first sound output unit 152 may be implemented in the form of a receiver for transmitting a call sound to a user's ear or a loud speaker for outputting various alarm sounds or reproduction sounds of multimedia.

The side key 132, the interface unit 170, the sound input unit 122, and the like are disposed on the side of the terminal body.

The side key 132 may be collectively referred to as an operation unit, and may receive a command for controlling the operation of the portable terminal 100. The side key 132 may be employed in any manner as long as the user is tactile in a tactile manner. The contents input by the side key 132 may be variously set. For example, the side keys 132 may be used to control commands of the image input unit 125, adjust the volume of sounds output from the sound output units 152 and 154, or switch the display unit 151 to the touch recognition mode. Can be input.

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 the side of the terminal body. The interface unit 170 serves as a passage for allowing the mobile terminal 100 according to the present invention to exchange data with an external device. For example, the interface unit 170 is wired or wirelessly, a connection terminal for connecting with the earphone, a port for short-range communication (for example, an infrared port (IrDA Port), a Bluetooth port (Bluetooth Port), a wireless LAN port ( Wireless LAN Port) and the like, or at least one of power supply terminals for supplying power to the mobile terminal 100. The interface unit 170 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), a memory card for storing information.

3 is a rear perspective view of the portable terminal shown in FIG. 2.

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

For example, the first image input unit 121 has a low pixel so that the user's face is photographed and transmitted to the counterpart in case of a video call, and the second image input unit 125 immediately photographs a general subject. It is preferable to have a high pixel because it is not transmitted in many cases. The image input unit 125 may be installed in the terminal body to be rotatable or pop-up.

The flash 127 and the mirror 126 are further disposed adjacent to the second image input unit 125. The flash 127 shines light toward the subject when the subject is photographed by the camera 126. The mirror 126 allows the user to see his / her own face or the like when photographing (self-photographing) the user by using the second image input unit 125.

The second sound output unit 154 may be further 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 of the terminal body, and may be used to implement a speakerphone mode during a call.

The rear of the terminal body is mounted with a power supply unit 190 for supplying power to the portable terminal (100). The power supply unit 190 may be embedded in the terminal body or may be directly detachable from the outside of the terminal body.

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

In the illustrated example, the cover window 210, the touch sensor layer 230, the adhesive layer 240, the shield layer 250, the upper polarizing film layer 223, the thin film transistor layer 221, and the lower polarizing film layer 222. ) Is included.

The cover window 210 is formed to provide a surface to which a touch can be applied, and protects the touch sensor layer 230 and the like. The cover window 210 may be formed of a transparent resin or glass (or tempered glass), and an inner surface thereof may include an opaque bezel for defining an output area of the display module 220. Such a bezel may be implemented by an opaque pigment or the like dispersed in a printing or cover window 210. The surface of the cover window 210 may include a translucent micropattern (protrusion) in order to prevent fingerprints of a finger touched on the cover window 210 from remaining. These fine patterns (projections) have a regular distance and height.

The touch sensor layer 230 includes a pattern for detecting a touch applied to the cover window 210, for example, an X pattern, a Y pattern, or the like. This pattern may be made of a transmissive conductive material, for example, a material such as indium tin oxide (ITO). The X pattern and the Y pattern may be located on the top and bottom surfaces of one sheet of insulating sheet, or on the same surface of the top or bottom surface of the insulating sheet. When the X pattern or the Y pattern is located on the same surface, an insulation ball may be included at the position where the X pattern and the Y pattern intersect. Meanwhile, it is also possible to form a single line (for example, a zigzag or a meander line) rather than a method including two patterns in different directions such as an X pattern or a Y pattern.

The touch sensor layer 230 may be diversified according to the method, but when the touch sensor layer 230 is configured to operate in a capacitive manner, in particular, the shielding layer 250 may block noise generated in the thin film transistor layer 221. You can expect.

The thin film transistor layer 221 forms an electric field by an electrode thereof to form an image, and induces a change in arrangement of the liquid crystal by the electric field. The upper and lower portions of the thin film transistor layer 221 include polarizing film layers 222 and 223 to implement colors.

In the present disclosure, the shield layer 250 is formed directly on the upper polarizing film layer 223, and does not use a separate base material for the formation of the shield layer 250. The shield layer 250 is formed by a light-transmitting conductor, for example, ITO, formed in the entire area of the upper polarizing film layer 223, and the change in the electric field generated in the thin film transistor layer 221 is shield layer 250. ) Is blocked by conductivity.

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

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

In order to prevent deterioration of visibility, the adhesive layer 240 may be formed by a light transmitting UV curable adhesive or an optically clear adhesive (OCA). 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 may be increased and the thickness of the portable terminal 100 may be reduced.

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

Examples presented include a cover window 210, an insulating adhesive layer 270, an ITO pattern 231, a base film 232, a transparent conductive adhesive layer 260, a display module 220, and the like.

Here, the touch sensor layer 230 described above is formed by the ITO pattern 231 and the light-transmissive base film 232, and the base film 232 having the ITO pattern 231 formed on the cover window 210 is insulative. It is shown that it is attached by the adhesive layer 270.

The conductive adhesive layer 260 is disposed between the base film 232 and the display module 220 to block the noise generated by the ITO pattern 231 from the display module 220. The conductive adhesive layer 260 is, for example, a mixture of a conductive polymer such as a conductive polymer or polysiloxane in an acrylic adhesive, and is a material having adhesiveness and conductivity. The conductive adhesive layer 260 may act as a film to block the noise of the display module 220, which is another modification of the shield layer 250 of FIG. 3. Since the conductive adhesive layer 260 is much thicker than the shield layer 250, the blocking effect may be improved accordingly.

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

Examples presented include a cover window 210, an ITO pattern 231, an insulating adhesive layer 270, a transparent conductive adhesive layer 260, and a display module 220.

Herein, the touch sensor layer 230 described above is directly formed on the lower surface of the cover window 210, and the ITO pattern 231 is directly deposited on the lower surface of the cover window 210. Therefore, the same layer as the base member is not required, thus contributing to the reduction in thickness.

The cover window 210 having the ITO pattern 231 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 integrally formed with the display module 220.

The insulating adhesive layer 270 is applied to prevent the ITO pattern 231 from directly contacting the conductive adhesive layer 260, and may be implemented by an ultraviolet curable resin or an OCA.

As described above, the conductive adhesive layer 260 is a mixture of a conductive polymer such as a conductive polymer or polysiloxane in an acrylic adhesive, and serves as a film that can block noise of the display module 220.

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

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

Referring to FIG. 7, the flexible PC 280 has an upper layer connection portion 281 extending to the top surface of the base film 232 and a lower layer connection portion 282 extending to the conductive adhesive layer 260 positioned on the lower surface of the base film 232. ) Is included. In terms of manufacture, the lower layer connection portion 282 is attached at the same time as the formation of the shield adhesive layer 260, the upper layer connection portion 281 is bonded to the attached lower layer connection portion 282, one flexible PC 280 To achieve. In this case, the lower layer connecting portion 282 is exposed to the conductive portion to 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 selectively or partially all of the embodiments so that various modifications can be made. It may be configured in combination.

Claims (13)

Cover window;
A transmissive touch sensor layer formed under the cover window and configured to sense 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 thereon; And
And a light-transmissive shield layer formed directly on the upper surface of the polarizing layer and formed conductively. The method of claim 1,
The shield layer is a portable terminal, characterized in that formed by indium tin oxide (ITO) directly deposited on the upper surface of the polarizing film layer. The method of claim 1,
The touch sensor layer is a portable terminal, characterized in that formed by ITO deposited directly on the lower surface of the cover window. The method of claim 1,
The touch sensor layer is a portable terminal, characterized in that it comprises a light-transmissive base film and ITO deposited in a predetermined pattern form on the base film and the top surface of the base film. The method of claim 4, wherein
And a glue layer is further provided between the base film and the shield layer so that the base film and the cover window are integrated. The method of claim 5,
The adhesive layer is a mobile terminal, characterized in that formed by ultraviolet curable adhesive or OCA (Optically Clear Adhesive). Cover window;
A transmissive touch sensor layer formed under the cover window and configured to sense 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 thereon; And
And a transmissive conductive adhesive layer disposed between the touch sensor layer and the display module so that the touch sensor layer is integral with the display module, and formed to block noise formed by the display module. The method of claim 7, wherein
The touch sensor layer is a portable terminal, characterized in that formed by ITO deposited directly on the lower surface of the cover window. The method of claim 7, wherein
The touch sensor layer is a mobile terminal, characterized in that it comprises an ITO deposited in a predetermined pattern form on the base film and the upper surface of the base film. 10. The method of claim 9,
The mobile terminal further comprises an adhesive layer for adhering between the cover window and the ITO so that the base film is integrated with the cover window. 10. The method of claim 9,
A flexible PC is further provided for connecting the touch sensor layer, and the flexible PC includes an upper layer connection part extending to an upper surface of the base film and a lower layer connection part extending to the conductive adhesive layer located on a lower surface of the base film. Portable terminal, characterized in that made. In the display module mounted on a portable terminal, The display module,
A thin film transistor (Thin Flim Transistor) layer formed to implement a phase;
A polarizing film layer formed on an upper surface of the thin film transistor layer; And
Display module of the mobile terminal, characterized in that formed directly on the upper surface of the polarizing film layer, including a shield layer to block the noise formed by the thin film transistor. In the display module mounted on a portable terminal, The display module,
Cover window;
A transmissive touch sensor layer formed under the cover window and configured to sense a touch applied to a surface of the cover window;
A polarizing film layer disposed below the touch sensor layer;
A thin film transistor (Thin Flim Transistor) layer disposed under the polarizing film layer; And
The display module of the mobile terminal is disposed between the touch sensor layer and the polarizing film layer, and includes a transparent conductive adhesive layer formed to block the noise formed by the thin film transistor layer.

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