WO2021100926A1

WO2021100926A1 - Mobile terminal

Info

Publication number: WO2021100926A1
Application number: PCT/KR2019/016094
Authority: WO
Inventors: 신규식
Original assignee: 엘지전자 주식회사
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2021-05-27

Abstract

A mobile terminal according to an embodiment comprises: a display panel including an active area for outputting an image and an inactive area surrounding the active area; and a touch panel embedded in the display panel to sense a touch applied to the display panel, in order to reduce the width of a bezel part of the display panel of a TOE type, through which signal lines of the touch panel pass, wherein the touch panel includes a plurality of signal electrodes provided on the active area and having a voltage varying according to the applied touch, and the signal lines provided on the inactive area to apply a driving signal to the signal electrodes or receive a voltage signal, wherein the signal lines are divided and provided in a plurality of layers stacked on the inactive area.

Description

Mobile terminal

The present invention relates to a mobile terminal including a display panel incorporating a touch panel. Specifically, it can be applied to a technical field that prevents an increase in the width of the bezel of the display panel by signal lines of the touch panel.

Terminals can be divided into mobile/portable terminals and stationary terminals depending on whether they can be moved. Again, mobile terminals can be divided into handheld terminals and vehicle mounted terminals according to whether or not the user can directly carry them.

A display device is a device having a function of receiving, processing, and displaying an image that can be viewed by a user. The display device receives, for example, a broadcast selected by a user among broadcast signals transmitted from a broadcasting station, separates the video signal from the received signal, and displays the separated video signal on the display.

In recent years, due to the development of broadcasting technology and network technology, the functions of the display device have been considerably diversified, and the performance of the device has been improved accordingly. That is, display devices have been developed to provide not only contents to be broadcast but also various other contents to users. For example, the display device may provide game play, music appreciation, internet shopping, user customized information, and the like using various applications as well as programs received from a broadcasting station. In order to perform such extended functions, the display device is basically connected to other devices or networks using various communication protocols, and provides a user with a ubiquitous computing environment. That is, the display device has evolved into a smart device that enables connectivity to a network and always-on computing.

Meanwhile, in recent years, a mobile terminal provides a larger screen to the user. The mobile terminal may provide a foldable mobile terminal with a large screen that folds in one direction, or a rollable mobile terminal with a large screen that expands or contracts in one direction. As mobile terminals provide large screens, touch pads are also increasing in size. Signal lines of an enlarged touch pad may cause a problem of increasing the bezel thickness of the display panel.

An object of the present invention is to reduce the width of a bezel through which signal lines of a touch panel pass in a display panel with a built-in touch panel.

In order to achieve the above object, a mobile terminal according to an embodiment includes a display panel including an active area in which an image is output and an inactive area surrounding the active area, and a touch applied to the display panel by being embedded in the display panel. And a touch panel for sensing, wherein the touch panel includes a plurality of signal electrodes provided on the active region and having a voltage varying in response to an applied touch, and a driving signal provided on the non-active region to the signal electrodes And signal lines for applying a voltage signal or receiving a voltage signal, and the signal lines may be divided into a plurality of layers stacked on the non-active area.

In addition, according to an embodiment, the plurality of layers may include a first layer including some of the signal lines, a second layer including the rest of the new path lines, and insulating the first layer and the second layer. It may include an insulating layer.

In addition, according to an embodiment, the signal lines provided in the first layer are arranged at a preset interval, and the signal lines provided in the second layer are matched to a region between the signal lines provided in the first layer. Can be arranged.

In addition, according to an embodiment, the preset interval may be smaller than the width of one signal line, and both sides of one signal line provided in the second layer may overlap signal lines provided in the first layer. have.

In addition, according to an embodiment, the signal lines provided in the first layer are arranged at a preset interval, and the signal lines provided in the second layer are arranged in accordance with the signal lines provided in the first layer. I can.

In addition, according to an embodiment, the plurality of signal electrodes are arranged in a second direction crossing the first direction so as not to contact a plurality of first signal electrode arrays arranged in a first direction and the first signal electrodes. A plurality of second signal electrode rows arranged, the signal lines are connected to the plurality of first signal electrode rows to apply a driving signal, and the plurality of second signal lines corresponding to the driving signal It may include second signal lines that lead the voltage signal generated from the signal electrode column.

In addition, according to an exemplary embodiment, the first signal lines may be connected to both ends of the first signal electrode row to form a first closed loop together with the first signal electrode row.

Also, according to an embodiment, the first closed loop may be connected to a first signal pad to which the driving signal is applied.

In addition, according to an exemplary embodiment, the second signal lines may be connected to both ends of the second signal electrode row to form a second closed loop together with the second signal electrode row.

Also, according to an embodiment, the second closed loop may be connected to a second signal pad that leads the voltage signal.

In addition, according to an embodiment, the display panel includes an emission layer including an organic light emitting diode corresponding to the active area, and an encapsulation layer that is stacked on the emission layer to seal the organic light emitting diode and is provided in the active area and the non-active area. Including, the touch panel may be provided on the encapsulation layer.

In addition, according to an embodiment, the organic light emitting diode is connected to a common electrode provided between the light emitting layer and the encapsulation layer, and the common electrode extends to the non-active region, so that noise is transmitted to the signal lines. Can be prevented.

Also, according to an embodiment, the display panel may be a flexible display panel.

In addition, according to an embodiment, the mobile terminal may include a roller member that winds or bends the display panel in a third direction to change a surface on which the active area is exposed from the front surface.

In addition, according to an embodiment, the signal lines may be divided into a plurality of layers in both non-active regions perpendicular to the third direction.

In the mobile terminal according to the exemplary embodiment, in a display panel including a touch panel, a width of a bezel portion through which signal lines of the touch panel pass may be reduced.

1 is a block diagram illustrating a mobile terminal related to the present invention.

2 is an exploded perspective view of a mobile terminal related to the present invention.

3 is a perspective view showing a first state and a second state as viewed from one side of a mobile terminal according to the present invention.

4 is a rear view showing a first state and a second state of a mobile terminal according to the present invention.

5 is a cross-sectional view of A-A and B-B of FIG. 3.

6 illustrates a flexible display panel according to an embodiment.

7 illustrates a first state (FIG. 7 (a )) and a second state (FIG. 7 (b )) of the flexible display panel of FIG. 6.

8 illustrates a circuit configuration of a flexible display according to an embodiment.

9 illustrates an embodiment of the circuit configuration of the pixel shown in FIG. 8.

10 shows an embodiment of an organic light emitting diode (OELD) included in FIG. 9.

11 illustrates an embodiment of a circuit configuration of a gate driver included in FIG. 8.

12 illustrates an embodiment of a circuit configuration of a data driver included in FIG. 8.

13 illustrates an embodiment of a circuit configuration of a gray voltage generator included in FIG. 8.

14 illustrates a circuit configuration of a display panel according to an exemplary embodiment.

15 illustrates an embodiment of the touch panel shown in FIG. 14.

16 illustrates a circuit configuration of a display panel according to an exemplary embodiment.

17 is a partial cross-sectional view of a display panel including a touch panel according to an exemplary embodiment. Specifically, it is an X-X' cross-sectional view of FIG. 15.

18 illustrates an embodiment of a touch panel. Hereinafter, a description will be made focusing on differences from the touch panel of FIG. 15.

19 is a partial cross-sectional view of a display panel including a touch panel according to an exemplary embodiment.

20 is a partial cross-sectional view of a display panel including a touch panel according to an exemplary embodiment.

21 shows an embodiment in which signal lines are provided in a single layer.

22 shows an embodiment in which signal lines are provided in a plurality of layers.

FIG. 23 shows a relationship between some of the signal lines provided in the first layer and the rest of the signal lines provided in the second layer.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are assigned the same reference numerals regardless of the reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for constituent elements used in the following description are given or used interchangeably in consideration of only the ease of writing the specification, and do not themselves have a distinct meaning or role from each other. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

Terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

The mobile terminal 100 includes a wireless communication unit 110, an input unit 120, a sensing unit 140, an output unit 150, an interface unit 160, a memory 170, a control unit 180, and a power supply unit 190. ) And the like. The components shown in FIG. 1 are not essential for implementing a mobile terminal, and thus, a mobile terminal described in the present specification may have more or fewer components than those listed above.

More specifically, among the above components, the wireless communication unit 110 is provided between the mobile terminal 100 and the wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or between the mobile terminal 100 and an external server. It may include one or more modules to enable wireless communication between. In addition, the wireless communication unit 110 may include one or more modules that connect the mobile terminal 100 to one or more networks.

The wireless communication unit 110 may include at least one of a broadcast reception module 111, a mobile communication module 112, a wireless Internet module 113, a short-range communication module 114, and a location information module 115. .

First, referring to the wireless communication unit 110, the broadcast receiving module 111 of the wireless communication unit 110 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. Two or more of the broadcast reception modules may be provided to the mobile terminal 100 for simultaneous broadcast reception or broadcast channel switching of at least two broadcast channels.

The mobile communication module 112 includes technical standards or communication methods for mobile communication (for example, GSM (Global System for Mobile communication), CDMA (Code Division Multi Access), CDMA2000 (Code Division Multi Access 2000)), EV -DO (Enhanced Voice-Data Optimized or Enhanced Voice-Data Only), WCDMA (Wideband CDMA), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc.), transmits and receives radio signals with at least one of a base station, an external terminal, and a server.

The wireless signal may include a voice call signal, a video call signal, or various types of data according to transmission and reception of text/multimedia messages.

The wireless Internet module 113 refers to a module for wireless Internet access, and may be built-in or external to the mobile terminal 100. The wireless Internet module 113 is configured to transmit and receive wireless signals in a communication network according to wireless Internet technologies.

Examples of wireless Internet technologies include WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), and the like, and the wireless Internet module ( 113) transmits and receives data according to at least one wireless Internet technology in a range including Internet technologies not listed above.

From the point of view that wireless Internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless Internet module 113 performs wireless Internet access through the mobile communication network. ) May be understood as a kind of the mobile communication module 112.

The short range communication module 114 is for short range communication, and includes Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, and NFC. Near field communication may be supported using at least one of (Near Field Communication), Wi-Fi (Wireless-Fidelity), Wi-Fi Direct, and Wireless USB (Wireless Universal Serial Bus) technologies. The short-distance communication module 114 is, between the mobile terminal 100 and a wireless communication system, between the mobile terminal 100 and another mobile terminal 100, or a mobile terminal 100 through a wireless area network (Wireless Area Networks). ) And a network in which another mobile terminal 100 or an external server is located may support wireless communication. The local area wireless communication network may be a wireless personal area network (Wireless Personal Area Networks).

The location information module 115 is a module for obtaining a location (or current location) of a mobile terminal, and representative examples thereof include a GPS (Global Positioning System) module or a WiFi (Wireless Fidelity) module. For example, if the mobile terminal utilizes a GPS module, it can acquire the location of the mobile terminal by using a signal transmitted from a GPS satellite. As another example, when the mobile terminal utilizes the Wi-Fi module, the mobile terminal may acquire the location of the mobile terminal based on information of the Wi-Fi module and a wireless access point (AP) that transmits or receives a wireless signal. If necessary, the location information module 115 may perform any function among other modules of the wireless communication unit 110 in order to obtain data on the location of the mobile terminal as a substitute or additionally. The location information module 115 is a module used to obtain the location (or current location) of the mobile terminal, and is not limited to a module that directly calculates or obtains the location of the mobile terminal.

The input unit 120 includes a camera 121 or an image input unit for inputting an image signal, a microphone 122 for inputting an audio signal, or an audio input unit, and a user input unit 123 for receiving information from a user, for example, , A touch key, a mechanical key, etc.). The voice data or image data collected by the input unit 120 may be analyzed and processed as a user's control command.

The camera 121 processes an image frame such as a still image or a moving image obtained by an image sensor in a video call mode or a photographing mode. The processed image frame may be displayed on the display unit 151 or stored in the memory 170. Meanwhile, a plurality of cameras 121 provided in the mobile terminal 100 may be arranged to form a matrix structure, and through the camera 121 forming a matrix structure as described above, various angles or focuses may be applied to the mobile terminal 100. A plurality of image information may be input. In addition, the plurality of cameras 121 may be arranged in a stereo structure to obtain a left image and a right image for implementing a stereoscopic image.

The microphone 122 processes an external sound signal into electrical voice data. The processed voice data may be utilized in various ways according to a function (or an application program being executed) being executed by the mobile terminal 100. Meanwhile, the microphone 122 may be implemented with various noise removal algorithms for removing noise generated in the process of receiving an external sound signal.

The user input unit 123 is for receiving information from a user, and when information is input through the user input unit 123, the controller 180 can control the operation of the mobile terminal 100 to correspond to the input information. . Such, the user input unit 123 is a mechanical (mechanical) input means (or a mechanical key, for example, a button located on the front, rear or side of the mobile terminal 100, a dome switch (dome switch), a jog wheel, Jog switch, etc.) and a touch-type input means. As an example, the touch input means is composed of a virtual key, a soft key, or a visual key displayed on a touch screen through software processing, or a portion other than the touch screen It may be made of a touch key (touch key) arranged in the. On the other hand, the virtual key or the visual key can be displayed on the touch screen while having various forms, for example, graphic, text, icon, video, or these It can be made of a combination of.

The sensing unit 140 may include one or more sensors for sensing at least one of information in the mobile terminal, information on surrounding environments surrounding the mobile terminal, and user information. For example, the sensing unit 140 includes a proximity sensor 141, an illumination sensor 142, a touch sensor, an acceleration sensor, a magnetic sensor, and gravity. Sensor (G-sensor), gyroscope sensor (gyroscope sensor), motion sensor (motion sensor), RGB sensor, infrared sensor (IR sensor: infrared sensor), fingerprint sensor (finger scan sensor), ultrasonic sensor (ultrasonic sensor) , Optical sensor (for example, camera (see 121)), microphone (microphone, see 122), battery gauge, environmental sensor (for example, barometer, hygrometer, thermometer, radiation detection sensor, It may include at least one of a heat sensor, a gas sensor, etc.), and a chemical sensor (eg, an electronic nose, a healthcare sensor, a biometric sensor, etc.). Meanwhile, the mobile terminal disclosed in the present specification may combine and utilize information sensed by at least two or more of these sensors.

The output unit 150 is for generating an output related to visual, auditory or tactile sense, and includes at least one of a display unit 151, an audio output unit 152, a hap tip module 153, and a light output unit 154. can do. The display unit 151 may implement a touch screen by forming a layer structure or integrally with the touch sensor. Such a touch screen may function as a user input unit 123 that provides an input interface between the mobile terminal 100 and a user, and may provide an output interface between the mobile terminal 100 and a user.

The sound output unit 152 may output audio data received from the wireless communication unit 110 or stored in the memory 170 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output unit 152 also outputs sound signals related to functions (eg, a call signal reception sound, a message reception sound, etc.) performed by the mobile terminal 100. The sound output unit 152 may include a receiver, a speaker, a buzzer, and the like.

The haptic module 153 generates various tactile effects that a user can feel. A typical example of the tactile effect generated by the haptic module 153 may be vibration. The intensity and pattern of the vibration generated by the haptic module 153 may be controlled by a user's selection or setting by a controller. For example, the haptic module 153 may synthesize and output different vibrations or sequentially output them.

The light output unit 154 outputs a signal for notifying the occurrence of an event using light from a light source of the mobile terminal 100. Examples of events occurring in the mobile terminal 100 may include message reception, call signal reception, missed call, alarm, schedule notification, e-mail reception, and information reception through an application.

The interface unit 160 serves as a passage between various types of external devices connected to the mobile terminal 100. The interface unit 160 connects a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and a device equipped with an identification module. It may include at least one of a port, an audio input/output (I/O) port, an input/output (video I/O) port, and an earphone port. The mobile terminal 100 may perform appropriate control related to the connected external device in response to the connection of the external device to the interface unit 160.

In addition, the memory 170 stores data supporting various functions of the mobile terminal 100. The memory 170 may store a plurality of application programs (application programs or applications) driven by the mobile terminal 100, data for operation of the mobile terminal 100, and commands. At least some of these application programs may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the mobile terminal 100 from the time of delivery for basic functions of the mobile terminal 100 (eg, incoming calls, outgoing functions, message reception, and outgoing functions). Meanwhile, the application program may be stored in the memory 170, installed on the mobile terminal 100, and driven by the controller 180 to perform an operation (or function) of the mobile terminal.

In addition to the operation related to the application program, the controller 180 generally controls the overall operation of the mobile terminal 100. The controller 180 may provide or process appropriate information or functions to a user by processing signals, data, information, etc. input or output through the above-described components or by driving an application program stored in the memory 170.

In addition, the controller 180 may control at least some of the components described with reference to FIG. 1 in order to drive the application program stored in the memory 170. Further, in order to drive the application program, the controller 180 may operate by combining at least two or more of the components included in the mobile terminal 100 with each other.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power to each of the components included in the mobile terminal 100. The power supply unit 190 includes a battery 191, and the battery may be a built-in battery or a replaceable battery.

At least some of the components may operate in cooperation with each other in order to implement an operation, control, or control method of a mobile terminal according to various embodiments described below. In addition, the operation, control, or control method of the mobile terminal may be implemented on the mobile terminal by driving at least one application program stored in the memory 170.

2 is an exploded perspective view showing a mobile terminal according to the present invention. 3 is a perspective view illustrating a first state and a second state of the mobile terminal as viewed from one side, and FIG. 4 is a rear view illustrating the first state and a second state of the mobile terminal. In addition, FIG. 5 is a cross-sectional view showing the first and second states of the mobile terminal obtained along the lines A-A and B-B of FIG. 3, respectively. In these drawings, FIGS. 3(a), 4(a), and 5(a) show the first state of the mobile terminal, and FIGS. 3(b), 4(b), and 5(b) are Indicate the second state of the mobile terminal.

As shown, the mobile terminal 100 in the first state is contracted and has a smaller size than the mobile terminal 100 in the second state. In addition, the size of the display 151 located in front of the mobile terminal 100 is also smaller than in the second state. On the other hand, the mobile terminal 100 in the first state is expanded in the first direction D1 and is converted to the second state, and in the second state, the size of the mobile terminal 100 and the front portion of the display unit 151 The size becomes larger than in the first state. In the following description, a direction in which the mobile terminal 100 and its display 151 are extended or enlarged is a first direction D1, and a contact or retract is made to change from the second state to the first state. Alternatively, the reduced direction is referred to as a second direction D2, and a direction perpendicular to the first and second directions D1 and D2 is referred to as a third direction.

The mobile terminal 100 of the present invention has a screen as shown in FIG. 3(b) in a first state in which the display unit 151 is positioned on the front side like a bar-shaped mobile terminal, as shown in FIG. 3(a). You can switch to the second state by expanding. In the second state, the area of the front surface of the display unit 151 is enlarged, and the area of the rear surface of the display unit 151 is reduced as shown in FIG. 4B. That is, the display unit 151, which was located on the rear surface of the mobile terminal 151 in the first state, moves to the front surface of the mobile terminal 100 in the second state.

In this way, the display unit may use the flexible display unit 151 that is bent so that the position of the display unit can be changed. A flexible display refers to a light and durable display that is not easily broken because it is manufactured on a thin and flexible substrate that can be bent, bent, folded, twisted or rolled like paper while maintaining the characteristics of a conventional flat panel display.

In addition, electronic paper is a display technology to which characteristics of general inks are applied, and the point of using reflected light may be different from conventional flat panel displays. Electronic paper can change information using a twist ball or electrophoresis using a capsule.

In a state in which the flexible display unit 151 is not deformed (eg, a state having an infinite radius of curvature, hereinafter referred to as a basic state), the display area of the flexible display unit 151 becomes a flat surface. In a state deformed by an external force in the basic state (for example, a state having a finite radius of curvature, hereinafter referred to as a deformed state), the display area may be a curved surface. As shown, information displayed in the deformed state may be visual information output on a curved surface. Such visual information is implemented by independently controlling light emission of sub-pixels arranged in a matrix form. The unit pixel means a minimum unit for implementing one color.

In the basic state, the flexible display unit 151 may be placed in a curved state (eg, bent vertically or horizontally) rather than a flat state. In this case, when an external force is applied to the flexible display unit 151, the flexible display unit 151 may be deformed into a flat state (or a less curved state) or a more curved state.

Meanwhile, the flexible display unit 151 may be combined with a touch sensor to implement a flexible touch screen. When a touch is made to the flexible touch screen, the controller 180 (refer to FIG. 1) may perform a control corresponding to such a touch input. The flexible touch screen may be configured to sense a touch input not only in the basic state but also in the deformed state.

The touch sensor senses a touch (or touch input) applied to the touch screen using at least one of various touch methods such as a resistive film method, a capacitive method, an infrared method, an ultrasonic method, and a magnetic field method.

As an example, the touch sensor may be configured to convert a pressure applied to a specific portion of the touch screen or a change in capacitance generated at a specific portion into an electrical input signal. The touch sensor may be configured to detect a location, an area, a pressure when a touch, a capacitance when a touch is touched, and the like at which a touch object applied to the touch screen is touched on the touch sensor.

Meanwhile, the mobile terminal 100 may be provided with a deformation detecting means capable of detecting deformation of the flexible display unit 151. Such deformation detecting means may be included in the sensing unit 140 (see FIG. 1).

The deformation detecting means is provided in the flexible display unit 151 or the case (three frames 101 to 103 to be described later), and may detect information related to deformation of the flexible display unit 151. Here, the information related to the deformation may include a direction in which the flexible display unit 151 is deformed, a deformed degree, a deformed position, a deformed time, and an acceleration at which the deformed flexible display unit 151 is restored, and the like, In addition, it may be various pieces of information that can be detected due to the bending of the flexible display unit 151.

In addition, the controller 180 may change information displayed on the flexible display unit 151 or change the information displayed on the flexible display unit 151 based on information related to the deformation of the flexible display unit 151 detected by the deformation detecting means. It is possible to generate a control signal to control the function of.

The change in state (first or second state) of the flexible display unit 151, that is, the size change in the front and rear surfaces of the mobile terminal 100 of the display unit 151 according to the size change of the mobile terminal 100, It can be performed manually by the force exerted by the user, but is not limited to this passive method. For example, when the mobile terminal 100 or the flexible display unit 151 has the first state, it may be transformed into the second state without an external force applied by the user by a command of a user or an application. In this way, in order to automatically deform the flexible display 151 without external force, the mobile terminal 100 may include a driving unit 200 to be described later.

The flexible display unit 151 of the present invention is bent 180 degrees while being rolled on either side of both sides of the mobile terminal 100. Accordingly, a part of the display unit 151 is disposed on the front surface of the mobile terminal 100 based on such a side, and the other part is disposed on the rear surface of the mobile terminal 100. A part of the display unit 151 located on the front side of the mobile terminal 100 may be fixed to the front side so as to be fixed, and the other part thereof located on the back side of the mobile terminal 100 may be provided to be movable on the back side. I can.

In addition, the display unit 151 may be wound or unwound on the side, and accordingly, a portion disposed on the rear surface of the mobile terminal 100 is moved to adjust the size of the area disposed in front of the mobile terminal 100 Can be. Since the flexible display unit 151 has a fixed area and consists of one continuous body, the rear area decreases as the front area increases. Such a display unit 151 may be accurately wound on one side of the second frame 102 in the second frame 102 that is movable relative to the first frame 101 to be described later, and the mobile terminal The second frame 102 is wound around the second frame 102 according to the moving direction of the second frame 102 to adjust the area of the display unit 151 in the front of the 100, withdraw or pulled from the second frame 102. out) or inserted or pushed into it. This operation will be described later in more detail along with other related components of the mobile terminal 100.

Typically, the antenna is provided in the case or housing of the mobile terminal 100, but the portion where the antenna is installed in the case or housing is limited by the flexible display unit 151 that covers the front and rear surfaces of the mobile terminal 100 Can be. For this reason, an antenna may be implemented on the flexible display unit 151. An antenna on display (AOD) is an antenna in which a patterned electrode layer and a dielectric layer are layered to form a transparent film. The built-in display antenna can be implemented thinner than the conventional copper nickel plating method, LDS (laser direct structuring) technology, so it has the advantage that it does not affect the thickness and is not exposed to the exterior. In addition, the display built-in antenna may directly transmit and receive signals from the display unit 151. Accordingly, in the mobile terminal 100 in which the display unit 151 is located on both sides as in the present invention, a display built-in antenna can be used.

2 to 5, a detailed configuration of the mobile terminal 100 of the present invention will be described in detail below. In the following description, reference is basically made to FIG. 2 showing the overall configuration, and FIGS. 3 to 5 are referenced to describe detailed features of the corresponding components in the first and second states of the mobile terminal 100 do.

The mobile terminal 100 of the present invention includes a main frame on which components are mounted, and the main frame of the present invention may be variable in size in the first direction as shown in FIG. 2. At least one or more frames may be moved relative to each other, and the size in the first direction may vary. In the main frame, electronic components are mounted inside and a flexible display unit 151 is located outside.

Since the mobile terminal 100 of the present invention includes a flexible display unit, the flexible display unit 151 may be coupled to surround the front and rear surfaces of the main frame. The main frame may include first to third frames 103. A first frame 101 and a second frame 102 moving in a first direction with respect to the first frame 101 and a third frame 103 moving in a first direction with respect to the second frame 102 can do. The first frame 101 and the second frame 102 include a front portion, a rear portion, and a side portion, and are coupled to each other. Accordingly, the mobile terminal 100 can form a hexahedral appearance by the first and second frames 102 combined. Considering the configuration of the illustrated 1-3 frames 101-103, the movement of the second and

third frames

102 and 103 may be a slide movement.

First, the first frame 101 corresponds to the main body of the mobile terminal 100, and a space for accommodating various parts may be formed therein. In addition, the first frame 101 may accommodate a second frame 102 that is movably coupled to the first frame 101 in such a space. More specifically, the first frame 101 includes a first front portion 1011 disposed in front of the mobile terminal 100 and a first front portion 1011 disposed in the rear of the mobile terminal, as well as shown in FIGS. 2 and 5. It may include a first rear portion 1012 and a second rear portion 1013.

These first front portion 1011, first rear portion 1012, and second rear portion 1013 may be formed of a substantially flat plate-shaped member. The first rear portion 1012 and the second rear portion 1013 may be formed of separate members coupled to each other or may be formed of a single member as shown. The first front portion 1011 and the first rear/second

rear portions

1012 and 1013 may be spaced apart from each other by a predetermined interval to form a predetermined space, and may be connected to each other by the side portions 1014. The control unit 180 and the power supply unit 190 may be accommodated as parts of the mobile terminal 100 in the space within the first frame 101. For example, the controller 180 may be a circuit board including a processor and an electronic circuit for controlling the operation of the mobile terminal, and the power supply unit 190 may be a battery and related parts. In addition, the second frame 102 and the driving unit 200 to be described later may also be accommodated in the first frame 101.

As described above, the display unit 151 has a continuous body and may be disposed on both the front and rear surfaces of the mobile terminal 100 while being wound in the mobile terminal 100. The display unit 151 may include a front portion positioned at the front of the mobile terminal 100, a rear portion positioned at the rear, and a side portion positioned between the front portion and the rear portion and surrounding the side of the mobile terminal. The front portion and the rear portion may be flat, and the display portion 151 may form a curved surface on the side portion. When the flexible display unit 151 is bent, the flexible display unit 151 may be damaged, and thus the flexible display unit 151 may be configured to be bent with a predetermined curvature.

The display unit 151 may be divided into a fixed portion and a variable portion. The fixing part means a part fixed to the frame. Since it is fixed to the frame, it is characterized by maintaining a constant shape without changing the degree of warpage. On the other hand, the variable part means a part in which the angle of the bent part is changed or the position of the bent part is changed. The variable portion whose bending position or angle is changed needs a structure to support the rear surface of the variable portion according to the change.

The first area 1511 of the display unit 151 may be coupled to the first front portion 1011 corresponding to the front surface of the mobile terminal 100.

On the other hand, as well as shown in FIG. 4, various physical input units 120 and sensor units 140 for manipulation of the mobile terminal 100 may be located at the first rear unit 1012, and the second rear unit The display unit 151 may be disposed only in the unit 1013. The first rear part 1012 does not overlap with the flexible display unit 151 and is always exposed to the outside regardless of the state of the mobile terminal, so it is close to the input unit 120 such as various buttons, switches, cameras 121, and flashes. A sensor unit 140 such as the sensor 141 may be disposed therein. In a typical bar-type terminal, a display unit is provided only in the front of the terminal. Accordingly, in order to photograph an object on the other side while viewing through the user's display unit, the main camera is disposed on the rear surface of the terminal. On the other hand, in order to take a picture while viewing the user himself through the display, an additional auxiliary camera is required on the front of the terminal.

However, in the mobile terminal 100 of the present invention, the display unit 151 is located on both the front and rear surfaces thereof. Therefore, when taking a picture of the user himself, a display unit on the same surface as the camera 121, that is, a part of the display unit 151 on the back of the mobile terminal 100 may be used, and when photographing an object opposite the user, the camera ( A display unit on the opposite surface to 121, that is, a part of the display unit 151 on the front surface of the mobile terminal 100 in the drawing may be used. For this reason, the mobile terminal 100 may use one camera 121 to photograph an object located opposite the user or the user. The camera may include a plurality of cameras having different angles of view, such as wide-angle, ultra-wide, and telephoto. A proximity sensor sound output unit, etc. may be located on the first rear part 1012 in addition to the camera, and an antenna 116 may be installed.

The side portion 1014 may extend along the edges of the first front portion 1011 and the first rear portion/second

rear portion

1012 and 1013 so as to surround the circumference of the first frame 101. 100) can be formed. However, as mentioned above, since the second frame 102 is accommodated in the first frame 101 and is movably coupled thereto, the relative movement of the second frame 102 with respect to the first frame 101 Part of the first frame 101 needs to be opened to allow for. 2, as an example, since the second frame 102 is movably coupled to either side of the first frame 101, the first frame 101 is practically closed. It may include a first side portion (101a) and a second side portion (101b) that is disposed to be opposite to the first side portion (101a) to be opened. Since the side portion 1014 is exposed to the outside of the mobile terminal 100, an interface unit 160 for connecting a power port or an ear jack, a user input unit 120 such as a volume button, and the like may be disposed. When including a metal material, the side portion 1014 may serve as an antenna.

The second rear portion 1013 of the first frame 101 may be covered by the display unit, but may be disposed on the front side of the display unit using a transparent material.

The second frame 102 may include a second front portion 1021 disposed in front of the mobile terminal 100 and a third rear portion 1022 disposed behind the mobile terminal 100. Like the first front portion 1011 and the first rear portion 1012 of the first frame 101, the second front portion 1021 and the third rear portion 1023 may be formed of generally flat plate-shaped members. . In addition, the second frame 102 accommodates various parts and should not interfere with the parts received in the first frame 101 during movement. Accordingly, the second front portion 1021 and the third rear portion 1022 may be combined in a state spaced apart from each other to form a predetermined space, and may have a shape that does not interfere with the parts in the first frame 101. have.

In addition, the display unit 151 may be bent 180 degrees while being wound in the second frame 102 so as to be disposed on both the front and rear surfaces of the mobile terminal 100. For such an arrangement of the display 151, the second frame 102 may include a roller 1028 rotatably disposed therein. The roller 1028 may be disposed at any position inside the second frame 102. However, the display 151 must be spread flat on the front and rear of the mobile terminal 100 in order to provide a screen of good quality to the user, and for this deployment, the display 151 must be provided with an appropriate tension. do. In order to provide an appropriate tension, the roller 1028 may be disposed at the end of the second frame 102 in the first direction. The roller 1028 extends in the second direction and may be rotatably coupled to the second frame 102.

The display unit 151 may have a predetermined curvature and may be gently bent and wound around the roller 1028. The flexible display unit 151 may include a first surface on which an image is output and exposed to the outside, and an inner surface facing the frame opposite the first surface. The roller 1028 may be installed to rotate freely on the second frame 102 while contacting the inner surface of the display unit 151. Accordingly, the roller 1028 may actually move the display unit 151 in a lateral direction of the mobile terminal 100, that is, in a direction perpendicular to the longitudinal direction. As will be described later, when the second frame 102 slides, the display unit 151 is in different directions (that is, in the first direction D1 or It moves to the front or rear of the mobile terminal 100 relative to the second frame 102 in the second direction D2, and the roller 1028 can guide this movement while rotating.

In addition, the roller 1028 is disposed on the first side portion 102a of the second frame 102, and the first side portion 102a actually corresponds to the outermost side of the mobile terminal 100. If the first side portion 102a of the second frame 102 is exposed, the display unit 151 wound around the roller 1028 may be damaged. Accordingly, the second frame 102 may include a side frame 1024 disposed on the first side portion 102a.

The side frame 1024 is elongated in the longitudinal direction of the second frame 102 to cover the first side portion 102a, thereby protecting the roller 1028 and the display unit 151 wound thereon. have. That is, the side frame 1024 covers a side portion of the display unit 151, and the side portion is located in the third area. The first area 1511 to the third area do not change in size or position to a designated position on the flexible display unit, but the sizes of the front and rear parts and the positions of the side parts are determined according to the state of the main frame.

The first area 1511 and the second area 1512 correspond to the above-described fixed portion, and the third area 1513 corresponds to the above-described variable portion.

And the location may vary according to the state of the mobile terminal. Since the side portion is wound by a roller, the side portion is bent with a predetermined curvature, and the inner surface of the side frame may include a curved surface corresponding to the curvature of the side portion.

By this side frame 1024, the second frame 102 has a first side part 102a that is substantially closed, and the side frame 1024 is substantially together with the side part 1014 of the first frame 101. As a result, the appearance of the mobile terminal 100 can be formed. In addition, in order to minimize interference with parts in the first frame 101 during movement, the second frame 102 is disposed opposite to the first side portion 102a, and may include a second side portion 102b that is open. have.

Such a second frame 102 is movably coupled to the first frame 101, and thus is configured to slide in a predetermined first or second direction (D1, D2) with respect to the first frame 101. I can. More specifically, as shown, the second frame 102 is movably coupled to the first frame 101 through the side of the first frame 101, precisely through the open second side 101b. I can. More specifically, the second side portion 102b of the second frame is disposed relatively adjacent to the first side portion 101a of the closed first frame 101, and thus the first side portion 102a of the second frame ) May be disposed opposite to the first side portion 101a. Accordingly, the second side portion 102b is inserted into the first frame 101 through the side portion of the first frame, that is, the second side portion 101b thereof. The first side portion 102b is not inserted into the first frame 101 and is always positioned outside the first frame 101, thereby forming the appearance of the mobile terminal 100 as described above. However, if necessary, the first side portion 102b of the second frame 102 may also be inserted into the first frame 101.

Due to this positional relationship, the second frame 102 may expand or contract from the first frame 101 in a direction perpendicular to the longitudinal direction of the mobile terminal 100 or the first frame 101. That is, the first and second directions D1 and D2 may basically be a direction perpendicular to the longitudinal direction of the mobile terminal 100 or the first frame 101. On the other hand, the first and second directions D1 and D2 may also be described as a lateral direction or a horizontal direction of the mobile terminal 100 or the first frame 101. In addition, in the movement of the first direction D1, the second frame 102 extends from the first frame 101, and accordingly, in the first direction D1, the second frame 102 becomes the first frame 101 It may be a direction moving away from, that is, outwardly of the mobile terminal 100 or the first frame 101. On the other hand, in the movement of the second direction D2, the second frame 102 is contracted to the first frame 101. Accordingly, the second direction D2 is a direction opposite to the first direction D1, so that the second frame 102 approaches the first frame 101, that is, the mobile terminal 100 or the first frame 101 ) Can be the direction of moving inwardly. When moving in the first direction D1, the second frame 102 expands, and a force is applied to a part of the display unit 151 disposed on the rear surface of the mobile terminal 100 to add a force to the mobile terminal 100. It is placed on the front side, and an area for such additional arrangement can be formed. Accordingly, the second frame 102 may convert the mobile terminal 100 into a second state having the relatively extended front display unit 151 by moving in the first direction D1. On the other hand, when the second frame 102 is moved in the second direction D2, it contracts to its original state, and moves again by applying a force to a part of the display unit 151 disposed in front of the mobile terminal 100 It can be restored to the rear of the terminal 100. Accordingly, the second frame 102 may convert the mobile terminal 100 into a first state having the relatively reduced front display unit 151 by moving in the second direction D2. Accordingly, the second frame 102 selectively exposes the display unit 151 on the front surface of the mobile terminal 100 according to the moving direction (ie, the first or second directions D1, D2), and moves accordingly. The terminal 100 may be switched to the first or second state defined above.

During expansion and contraction in the first and second directions (D1, D2), the second frame 102 does not interfere with the first frame 101 so that the first frame 101, specifically, its first front It may overlap with the part 1011 and the first rear part 1012. More specifically, the display unit 151 may be coupled by and supported by the first front portion 1011 of the first frame 101, as described above, and accordingly, the second frame 102 There is no need to be additionally supported by the second front portion 1021 of the. Rather, when the second front portion 1021 is interposed between the first front portion 1011 and the display unit 151, the display unit 151 is caused by friction with the second front portion 1021 that moves repeatedly. It can be deformed or broken. Accordingly, the second front portion 1021 may be disposed below the first front portion 1011 as well illustrated in FIG. 5. That is, the front surface of the second front portion 1021 may face the rear surface of the first front portion 1011. In addition, in order to stably support the movement of the second frame 102, the rear surface of the first front portion 1011 may contact the front surface of the second front portion 1021.

The third rear portion 1022 of the second frame 102 may be disposed below the second rear portion 1013 of the first frame 101. That is, the front surface of the third rear portion 1022 may face the rear surface of the second rear portion 1013. In addition, in order to stably support the movement of the second frame 102, the rear surface of the second rear portion 1013 may contact the front surface of the third rear portion 1022. By this arrangement, the third rear portion 1022 is exposed to the outside of the first frame, specifically, the second rear portion 1013, and may be coupled to the display unit 151.

Alternatively, when the second rear portion 1013 is made of a transparent material, the second rear portion 1013 may form a rear appearance of the mobile terminal. The second rear portion 1013 is located in the rear direction than the third rear portion 1022 of the second frame, and the flexible display unit is positioned between the second rear portion 1013 and the third rear portion 1022 in the first state. I can.

When the second rear portion 1013 is formed of a material such as transparent glass to form the rear exterior of the mobile terminal, the first rear portion 1012 may be implemented using the same member as the second rear portion 1013. That is, the camera 121, the flash, or the sensing unit 140 may be disposed by partially coating a plate-shaped member made of a transparent glass material so that internal parts are not visible, and omitting the coating only on a necessary part.

In addition, the second frame 102 can expand and contract the size of the mobile terminal 100 itself, especially the front of the mobile terminal 100 by expanding and contracting in the first and second directions (D1, D2). In addition, the display unit 151 needs to be moved by such an expanded or reduced front surface in order to obtain the intended first and second states. However, when fixed to the second frame 102, the display unit 151 cannot be smoothly moved to fit the front surface of the mobile terminal 100 to be expanded or contracted. For this reason, the display unit 151 may be movably coupled to the second frame 102. In more detail, the display unit 151 includes a first end (side edge or side end) 151d disposed on the front side of the mobile terminal 100 and a second end opposite to the side edge or side end 151d. (151e) may be included. The first end 151 is disposed on the front of the first frame 101, that is, the front of the first front portion 1011 thereof, and the side of the mobile terminal 100, that is, the first side 101a of the first frame. Can be placed adjacent to. On the other hand, since the second end portion 151e is adjacent to the rear surface of the mobile terminal 100 and the third rear portion 1022 of the second frame 102, the second end portion 151e is adjacent to the third rear portion 1022 of the second frame 102. It may be coupled to be movable in the first and second directions D1 and D2. In addition, since the display unit 151 is not structurally strong, the third frame 103 may be coupled to the second end 151e. The third frame 103 may be formed of a plate-shaped member extending long in the longitudinal direction of the mobile terminal 100. Accordingly, the third frame 103 may be coupled to the second frame, that is, the third rear portion 1022 thereof, to be movable in the first and second directions D1 and D2 in place of the second end 151e. have. In addition, the second frame 102 may include a slot 1025 extending in a lateral direction of the mobile terminal 100 or the second frame 102, that is, in a direction perpendicular to the longitudinal direction thereof, and the third frame ( 103) can be stably moved while being guided by the slot 1025. The third frame 103 may include, for example, a protrusion inserted into the slot 1025 for movement along the slot 1025.

3-5, in connection with the configuration of the 1-3

frames

101, 102, and 103, the display unit 151 faces one side thereof, that is, the first end 151d. A first region 1511 extending a predetermined length toward a second end portion 151e and disposed opposite to the first region 1511, the first end 151d from the second end 151e. It may include a second region 1512 extending toward a predetermined length. In addition, the display unit 151 may include a third area 1513 disposed between the first and

second areas

1511 and 1512. The 1-3

areas

1511, 1512, and 1513 are connected to each other and may form a continuous body of the display unit 151. In addition, as described above, for the movement of the third area 1513 to the front or rear of the mobile terminal 100 according to the moving direction of the second frame 102, the first area 1511 is a mobile terminal. It is fixed so as not to be moved on the front surface of 100, and the second area 1512 may be provided to be movable on the rear surface of the mobile terminal. The configuration of the display unit 151 will be described in more detail below.

The first area 1511 may be disposed in front of the mobile terminal 100, more specifically, in the front of the first frame 101, that is, the first front portion 1011. The first area 1511 is fixed to the front of the first frame 101, that is, the first front part 1011 so that it does not move even when the second frame 102 is moved, and accordingly It can be exposed to the front. The third region 1513 is adjacent to the first region 1511 and extends into the second frame 102 and may be wound around the roller 1028. The third region 1513 may continuously extend out from the second frame 102 again and partially cover the rear surface of the second frame 102, that is, the third rear portion 1022. On the other hand, the second frame 102, that is, the third rear portion 1022, is adjacent to the first frame 101, that is, the second rear portion 1013 and together form the rear case of the mobile terminal 100, It may be described that the third area 1513 is also disposed on the rear surface of the first frame 101.

The second area 1512 is adjacent to the third area 1513 and may be disposed on the rear surface of the mobile terminal 100, more specifically, the second frame, that is, the rear surface of the third rear portion 1022 thereof. . The second region 1512 may be coupled to the third frame 103 without being directly coupled to the second frame 102. As shown in FIG. 4(b), a slot 1025 extending laterally to the second frame 102, that is, the third rear portion 1022 (that is, a direction perpendicular to the longitudinal direction of the mobile terminal 100). ) Is formed and the third frame 103 may move along the slot 1025. Although the slot 1025 is shown to be formed on the rear surface of the second frame 102 in FIG. 4B, it may be formed on the side surface of the second frame 102. The second area 1512 may move in the first or second direction (D1, D2) with respect to the second frame 102 together with the third frame 103, but the movement of the second area 1512 is a slot ( 1025) can be limited to the inside of the rear surface of the mobile terminal 100. That is, the second region 1512 does not move outside the second frame 102 even when the second frame 102 is expanded or contracted, and the second frame 102 is extended or contracted by a distance of the second frame 102. ) Can be moved along the slot 1025. Accordingly, the second area 1512 may be always exposed on the rear surface of the mobile terminal 100.

As a result, the first area 1511 is disposed on the front surface of the mobile terminal 100 and is always exposed on the front side regardless of the movement of the second frame 102, and the second area 1512 is the mobile terminal 100. It is disposed on the rear surface of and can be always exposed to the rear surface regardless of the movement of the second frame 102. In addition, the third region 1513 is disposed between the first and

second regions

1511 and 1512, and the front or rear surface of the mobile terminal 100 according to the movement direction D1 and D2 of the second frame 102. Can be selectively placed on.

Due to the selective arrangement of the third area 1513, as shown in FIG. 4(b), the second rear portion 1013 of the first frame 101 is the display unit 151 in the first state. While covered by the second and

third regions

1512 and 1513 and the third rear portion 1022 in the second state, the third region 1513 moves to the front of the mobile terminal 100, and the third Since the rear part 1022 also moves in the first direction D1, it may be exposed to the outside of the mobile terminal 100. In addition, the second front portion 1021 of the second frame 102 is disposed under the first front portion 1011 of the first frame 101 in the first state, but from the first frame 101 in the second state. The third area 1513 of the display unit 151 that has been moved out and disposed in front of the mobile terminal 100 may be supported.

Since the first and

second regions

1511 and 1512 are always disposed on the front and rear surfaces of the mobile terminal 100, the curvature of the first region 1511 and the second region 1512 does not change and maintains a flat basic state. I can. However, the third region 1513 may be bent by winding the roller 1028 in the second frame 102. When switching from the first state to the second state, the third area 1513 may be wound around the roller 1028 in any one direction and may extend from the second frame 102 to the front of the mobile terminal 100. On the other hand, when switching from the second state to the first state, the third area 1513 may be retracted from the front of the mobile terminal 100 to the second frame 102 while being wound in the opposite direction to the roller 1028, and at the same time It is possible to return to the rear surface of the mobile terminal 100 from the second frame 102. The foldable mobile terminal in the form of an open book like a book tends to damage the specific location because only a specific location is repeatedly folded. On the other hand, the deformation portion of the flexible display unit 151, that is, the portion wound around the roller 1028, may vary according to the movement of the first and second states of the mobile terminal 100, that is, the second frame 102. . Accordingly, the mobile terminal 100 of the present invention can significantly reduce deformation and fatigue repeatedly applied to a specific portion of the display unit 151, thereby preventing damage to the display unit 151.

Based on the above-described configuration, the overall operation of the mobile terminal 100 will be described as follows. As an example, a state change may be performed manually by a user, and the operation of the mobile terminal 100 during this manual state change will be described. However, the operation of the 1-3 frames 101-103 and the display unit 151 described below is when a power source other than the user's power is used, for example, when the driving unit 200 to be described later is applied. The same can be done for.

As shown in Figs. 3(a), 4(a) and 5(a), the second frame 102 is completely retracted into the first frame 102 in the first state. Accordingly, only the first area 1511 of the display unit 151 fixed to the front of the first frame 101 may be exposed on the front of the mobile terminal 100. The first region 1511 may be fixed and supported on the first frame 101, that is, the first front portion 1011 thereof. In addition, the third area 1513 is mostly disposed on the rear surface of the mobile terminal 100 together with the second area 1512, and may be disposed in the second frame 102 while being partially wound around the roller 1028. . The third area 1513 on the rear surface of the mobile terminal 100 may be supported by a second frame, that is, a third rear portion 1022 thereof. The second area 1512 is fixed by the third frame 103 disposed on the second frame (ie, the third rear portion 1022 ), and may be movably coupled to the second frame 1012.

In this first state, when the second frame 102 moves in the first direction D1, the mobile terminal 100 may be switched to the second state. 3(b), 4(b) and 5(b), the second frame 102 is extended from the first frame 101 by movement in the first direction D1 , It is possible to increase the overall size of the mobile terminal 100, especially the front surface thereof. During the movement in the first direction D1, the second frame 102 may apply a force, that is, a tension, to the display unit 151 in the first direction D1. The display unit 151 is fixed to the first frame 101, but is movably coupled to the second frame 102 using the third frame 103, so that it is controlled by the force applied by the second frame 102. The third area 1513 may be rolled out from the roller 1028 of the second frame 102 to the front surface of the mobile terminal 100. That is, the third region 1513 may be withdrawn or pulled out, extended, or moved out from the second frame 102. At the same time, the third area 1513, in particular the portion disposed on the rear surface of the mobile terminal 100, is rolled into the roller 1028 of the second frame 102 from the rear surface or the second frame 102 It can be inserted or pushed in, retracted, or moved in. All of the third area 1513 is not drawn out from the second frame 102 to the front of the mobile terminal 100, and a part of the third area 1513 is still rolled by the roller 1028 and the second frame ( 102). In addition, for smooth movement of the third region 1513, the second region 1512 may also move in the first direction D1 with respect to the second frame 102 together with the third frame 103. In addition, as described above, the second region 1512 and the third frame 103 are constrained by the second frame 102 so that the first direction ( You can move to D1). Accordingly, the second region 1512 and the third frame 103 can be relatively moved in the first direction D1 as well as the second frame 102 as well as the first frame 101, and accordingly, the second frame It can move a distance longer than the moving distance of (102). Accordingly, due to the long movement of the second area 1512 in the first direction D1, the third area 1513 can be smoothly extended to the front of the mobile terminal 100. In addition, in order to move the third region 1513 in proportion to the expansion of the second frame 102, the movement of the second region 1512 and the third frame 103 in the first direction D1 is third. In proportion to the movement of the region 1513 and the second frame 102, it may be performed simultaneously with the movement of the third region 1512 and the second frame 102 in the first direction D1.

When the second frame 102 is completely extended in the first direction D1, the first and

third regions

1511 and 1513 are disposed on the front surface of the mobile terminal 100, and the rear surface of the mobile terminal 100 is Only the second area 1512 may be disposed. These first and

third regions

1511 and 1513 may be supported by a first frame (ie, its first front portion 1011) and a second frame (ie, its second front portion 1021 ). In addition, the second frame 102, that is, the third rear portion 1022 thereof, extends in the first direction D1 to expose the second rear portion 1013 of the first frame, and the moving third area ( 1513) can be supported. Accordingly, in the second state, the mobile terminal 100 may have an extended front display unit 151.

On the other hand, when the second frame 102 moves in the second direction D2 in the second state, the mobile terminal 100 is again shown in FIGS. 3(a), 4(a), and 5(a). It is possible to return to the first state as previously described. The second frame 102 is contracted to the first frame 101 by movement in the second direction D2, and the overall size of the mobile terminal 100, particularly the front surface thereof, can be reduced. The movement of the display unit 151 during the movement of the second frame 102 may be performed in the reverse order to the movement in the first direction D1 described above. Briefly, the third area 1513 may be wound by the roller 1028 of the second frame 102 from the front of the mobile terminal 100 or may be retracted, contracted, or moved into the second frame 102. At the same time, the third area 1513 may be wound, drawn out, expanded, or moved from the roller 1028 of the second frame 102 to the rear surface of the mobile terminal 100. All of the third area 1513 is not drawn out from the second frame 102 to the rear surface of the mobile terminal 100, and a part of the third area 1513 is still rolled by the roller 1028 and the second frame ( 102). In addition, for smooth movement of the third region 1513, the second region 1512 may also move in the second direction D2 with respect to the second frame 102 together with the third frame 103, The second region 1512 and the third frame 103 are constrained by the second frame 102 and may move in the second direction D2 with respect to the first frame 101 together with the second frame 102. Accordingly, the second region 1512 and the third frame 103 can be relatively moved in the second direction D2 not only the second frame 102 but also the first frame 101, and accordingly, the second frame A distance longer than the moving distance of 102 can be moved in the second direction D2. Accordingly, due to the long movement of the second area 1512, the third area 1513 can be smoothly returned to the rear surface of the mobile terminal 100. In addition, in order to move the third region 1513 proportional to the contraction of the second frame 102, the movement of the second region 1512 and the third frame 103 in the second direction D2 is third. In proportion to the movement of the region 1513 and the second frame 102, it may be performed simultaneously with the movement of the third region 1512 and the second frame 102 in the second direction D2. When the second frame 102 is completely retracted in the second direction D2, the mobile terminal 100 can be switched to the first state as described above, and is relatively A reduced front display unit 151 may be provided.

6 illustrates a flexible display panel 151 according to an embodiment. 7 illustrates a first state (FIG. 7A) and a second state (FIG. 7B) of the flexible display panel 151 of FIG. 6.

The flexible display 151 according to an embodiment may include an active area 210 in which an image is output and an inactive area 220 provided around the active area 210. The non-active area 220 may form a bezel part at the edge of the active area 210. In addition, the non-active area 220 may include a driving driver 230 for applying a signal for outputting an image to the active area 210 and a retrospective configuration.

In the flexible display 151 according to an exemplary embodiment, the active area 210 may be divided into a first active area 211, a second active area 212, and a third active area 213. The first active area 211 may be an area of the active area 210 that is exposed in the front direction of the mobile terminal. The second active area 212 may be an area of the active area 210 that is exposed toward the rear of the mobile terminal. The third active area 213 is an area provided between the first active area 211 and the second active area 212 and may correspond to a portion surrounding the first roller 1028 of FIG. 5.

In the flexible display 151 according to an embodiment, sizes of the first active area 211 and the second active area 212 may vary according to the state of the mobile terminal. For example, while the mobile terminal transitions from a first state (Fig. 7(a)) to a second state (Fig. 7(b)), the first active area 211 becomes smaller and the second active area ( 212) can be large. Conversely, while the mobile terminal transitions from the second state (Fig. 7(b)) to the first state (Fig. 7(a)), the first active area 211 becomes larger, and the second active area 212 is It can be small. In this case, the third active region 213 may only move according to a state change, and the size may be fixed.

In the flexible display 151 according to an embodiment, as shown in FIG. 7(a), the mobile terminal includes an area in which the driving driver 230 is provided on the rear surface of the first active area 211. It can be provided. The driving driver 230 may be mounted on the non-active region 220 in a chip on film method. The driving driver 230 may be a component included in the controller 180 illustrated in FIG. 1 or may be a component connected to the controller 180.

The flexible display 151 according to an embodiment may include a circuit configuration for applying a signal from the driving driver 230 to the active region 210 to the non-active region 220.

8 illustrates a circuit configuration of a flexible display 151 according to an embodiment.

The flexible display 151 according to an embodiment may include a pixel unit 310 corresponding to the active area 210 of FIG. 6 and a display control unit 330 corresponding to the driving driver 230.

The pixel unit 310 according to an exemplary embodiment may include pixels P11 to Pnm positioned at intersections of the gate lines G1 to Gn and the data lines D1 to Dm. Each of the pixels P11 to Pnm may be arranged in the form of an m*n matrix, as shown in FIG. 8. Each of the pixels P11 to Pnm includes a light emitting device, and a power supply voltage ELVDD and a base voltage ELVSS for emitting the light emitting device (organic light emitting diode) may be supplied from the outside. Each of the pixels P11 to Pnm may emit light with a luminance corresponding to a data voltage by supplying a driving current or voltage to the light emitting device.

Each of the pixels P11 to Pnm according to an embodiment controls the amount of current supplied to the light emitting device in response to a data voltage transmitted through the data lines D1 to Dm, and the light emitting device corresponds to the data voltage. It can emit light with a luminous intensity.

The display control unit 330 according to an embodiment includes a timing control unit 331 for generating and outputting control signals to the gate driving unit 332 and the data driving unit 333, and data lines for each of the plurality of pixels P11 to Pnm. A gate driver 332 applying a driving signal through (G1 to Gn), data applying a data voltage corresponding to an input image to each of the plurality of pixels P11 to Pnm through the data lines D1 to Dm It may include a driving unit 333 and a gray voltage generation unit 150 that generates a plurality of gray voltages V0 to V255 and supplies them to the data driver 333.

The timing controller 331 according to an embodiment receives an input image signal and an input control signal for controlling the display thereof from an external graphic controller (not shown). The timing controller 331 generates a gate driving click (CPV), a start pulse (STV), and the like, and outputs them to the gate driver 332. In addition, the timing controller 331 generates input image data (DATA), a source start pulse (SSP), a source shift click (SSC), and a source output enable (SOE) from the input image signal and the image control signal. It is output to the data driver 333.

The gate driver 332 according to an embodiment generates a driving signal by using a gate driving click (CPV) and a start pulse (STV) input from the timing controller 331, and gate lines G1 to Gn. Through the output to each of the pixels (P11 to Pnm).

The gate driver 332 according to an embodiment outputs a light emission control signal to a plurality of light emission control lines (not shown) connected to the plurality of pixels P11 to Pnm as well as the gate lines G1 to Gn. You can do it. That is, the gate driver 332 may sequentially or simultaneously output driving signals and emission control signals in row units through the gate lines G1 to Gn and emission control lines (not shown). .

9 illustrates an embodiment of the circuit configuration of the pixel Pij illustrated in FIG. 8.

The pixel Pij according to the embodiment is a light emitting device and may include an organic light emitting diode OLED and a pixel circuit 410.

An organic light emitting diode (OLED) according to an embodiment emits light by receiving a driving current I_OELD output from the pixel circuit 410, and the luminance of light emitted from the organic light emitting diode (OLED) is the driving current (I_OLED). ) May vary depending on the size.

The pixel circuit 410 according to an exemplary embodiment may include a capacitor C1, a first transistor T1, and a second transistor T2. The first transistor T1 may include a first terminal connected to the data line Di, a second terminal connected to the gate terminal of the second transistor T2, and a gate terminal connected to the gate line Gi. The second transistor T2 is a first terminal receiving the power voltage ELVDD, a second terminal connected to the anode of the organic light emitting diode OLED, and a gate terminal connected to the second terminal of the first transistor T1. It may include. The cathode of the organic light emitting diode OLED may be connected to the ground voltage ELVSS. In this case, the capacitor C1 of the pixel circuit 410 may be connected between the first terminal and the gate of the second transistor T2.

The organic light emitting diode OLED according to an exemplary embodiment may emit light in response to the driving current I_OLED generated by the second transistor T2. Specifically, when the driving signal is applied to the first transistor through the gate line Gi, the data signal may be human to the gate terminal of the second transistor T2 and the capacitor C1 through the first transistor T1. While a valid data signal is applied through the data line Dj, a voltage of a level corresponding to the data signal is charged in the capacitor C1, and the driving current I_OLED applied to the organic light emitting diode OLED is constantly controlled. can do.

The organic light emitting diode OLED according to an embodiment may include organic compound layers 421 to 425 formed between an anode as a pixel electrode and a cathode as a common electrode. The organic compound layers 421 to 425 may include a hole injection layer 421, a hole transport layer 422, a light emitting layer 423, an electron transport layer 424 and an electron injection layer 425.

In the organic light emitting diode (OLED) according to an embodiment, when a driving voltage is applied to an anode and a cathode, holes passing through the hole transport layer 422 and electrons passing through the transfer transport layer 424 emit light (423). ) To form excitons, and as a result, the light emitting layer 423 may emit visible light.

11 illustrates an embodiment of the circuit configuration of the gate driver 332 included in FIG. 8.

The gate driver 332 according to an embodiment may include a gate in panel (GIP) circuit illustrated in FIG. 11. The GIP driving circuit constitutes a shift register, and the shift register may include a plurality of stages SL1 to SLn that are dependently connected.

The gate driver 332 according to an embodiment includes stages ST1 to STn that sequentially output a driving signal by shifting the start pulse STV according to the gate driving click CPV.

The GIP driving circuit of the gate driver 332 according to an exemplary embodiment may be provided at both corners of the flexible display panel 151. When the GIP driving circuit is divided into both corners and provided, the width of the bezel portions on both sides of the active region 210 may be reduced. However, the GIP driving circuit of the gate driver 332 may be provided at one corner of the flexible display panel 151.

The GIP driving circuit according to an embodiment may include a plurality of stages ST1 to STn to which a gate driving click CPV and a start pulse STV are input. Each of the stages ST1 to STn generates an output in response to the start pulse STV, and shifts the output according to the gate driving click CPV.

The gate driver 332 according to an exemplary embodiment includes a plurality of stages (ST1 to STn, where n is a natural number equal to or greater than 2) that are dependently connected. Each of the stages ST1 to STn outputs a driving signal through the gate lines G1 to Gn, respectively. Here, the gate signal may correspond to a gate voltage or a gate pulse. The gate signal may be applied to the pixel Pij and transmitted to the front stage and the rear stage at the same time.

The stages ST1 to STn of the gate driver 332 according to an exemplary embodiment start to output driving signals in response to a start pulse STV, and shift the driving signals in response to a gate driving click CPV.

12 illustrates an embodiment of a circuit configuration of the data driver 333 included in FIG. 8.

The data driver 333 according to an embodiment includes a shift register unit 533a, a sampling latch unit 533b, a holding latch unit 533c, and a digital-analog converter unit (DAC unit) 533d. And a buffer unit 533e.

The shift register unit 533a according to an embodiment receives a source start pulse SSP and a source shift click SSC from the timing controller 331. The shift register 533a receiving the source shift click (SSC) and the source start pulse (SSP) sequentially generates m sampling signals while shifting the source star pulse (SSP) every one cycle of the source shift click (SSC). . To this end, the shift register unit 533a includes m shift registers.

The sampling latch unit 533b according to an embodiment sequentially stores the input image data DATA in response to a sampling signal sequentially supplied from the shift register unit 533a. To this end, the sampling latch unit 533b includes m sampling latches to store m input image data DATA.

The holding latch unit 533c according to an embodiment receives a source output enable (SOE) signal from the timing control unit 331. The holding latch unit 533c receiving the source output enable (SOE) signal receives and stores the input image data DATA from the sampling latch unit 533b. In addition, the holding latch unit 533c supplies the input image data DATA stored therein to the DAC unit 533d. To this end, the holding latch unit 533c includes m holding latches.

The DAC unit 533d according to an embodiment receives input image data DATA from the holding latch unit 533c, and receives the gray voltages V0 to V255 from the gray voltage generator 334, and receives the input. In response to the input image data DATA, m data voltages are generated, and the generated data voltages are supplied to the buffer unit 533e.

The buffer unit 533e according to an embodiment supplies m data voltages supplied from the signal generator 533d to each of the m data lines D1 to Dm. To this end, the buffer unit 533e includes m buffers.

13 illustrates an embodiment of a circuit configuration of the gray voltage generator 334 included in FIG. 8.

The gray voltage generator 334 according to an embodiment may generate a plurality of gamma-corrected gray voltages V0 to V255 and output them to the data driver 333. It may vary according to the number of grayscales expressed in the flexible display 151 of the plurality of grayscale voltages V0 to V255. The embodiment of the present invention is described on the basis that the gray scales expressed on the flexible display 151 are 256 gray scales, but the embodiment of the present invention is not necessarily limited thereto.

The gray voltage generator 334 according to an embodiment includes a positive gamma part 534a, a negative gamma part 534b, and a buffer part 534c connected in parallel between a power supply voltage (GVDD and a base voltage GVSS). And a distribution unit 534d.

The positive gamma part 534a and the negative gamma part 234b are a plurality of positive resistance groups RP1 to RPk connected in series between a power supply voltage GVDD and a base voltage GVSS or a plurality of negative resistance groups ( RN1 to RNk). In this configuration, in the positive gamma portion 534a and the negative gamma portion 534b, the power voltage GVDD is divided by the resistances of the positive resistance groups RP1 to RPk or the negative resistance groups RN1 to RNk, The k positive voltages VP1 to VPk or k negative gamma voltages VN1 to VNk are respectively generated.

The buffer unit 534c outputs the positive gamma voltages VP1 to VPk and the negative gamma voltages VN1 to VNk generated by the positive gamma unit 534a and the negative gamma unit 534b in a certain order. do. The buffer unit 534c serves to suppress variations in the output of the output gamma voltages VGna_1 to VGna_k.

The distribution unit 534d generates a plurality of gray voltages V0 to V255 representing the voltage level of each gray level by dividing the voltage between the output gamma voltages Vgma_1 to Vgma_k output from the buffer unit 534d. can do. The distribution unit 534d includes a resistance row in which a plurality of resistors are connected in series. A plurality of output gamma voltages (Vgma_1 to Vgma_k) are applied to some of the nodes between the resistance rows, and the applied output gamma voltages (Vgma_1 to Vgma_k) are voltage-divided by the resistors, so that a plurality of gray voltages (V0 to Vgma_k) are applied. V255). The plurality of gray voltages V0 to V255 are provided to the data driver 333 (refer to FIG. 8), and a voltage corresponding to the data signal of each pixel may be selected from among the plurality of gray voltages V0 to V255. .

14 illustrates a circuit configuration of the display panel 151 according to an exemplary embodiment. Specifically, FIG. 14 shows the touch panel circuit configuration overlapping the display panel 151 shown in FIG. 8. Hereinafter, a touch panel circuit configuration, which is an added configuration, will be described in detail.

The touch panel 700 according to an embodiment may be provided on the display panel 151.

The touch panel 700 according to an embodiment may include a touch sensing unit 710, a touch sensing controller 731, a Tx driving circuit 732, and an Rx driving circuit 733.

The touch sensing unit 710 according to an exemplary embodiment is an area that senses a contact of an object such as a human hand or a styleless pen. The touch sensing unit 710 may be provided at a position corresponding to the area of the pixel unit 310. The touch sensing unit 710 may include i*j touch sensing capacitors TSCAP_ij (refer to FIG. 15) at a point where the Tx signal lines T1 to Ti and the Rx signal lines R1 to Rj cross. .

In response to a driving signal provided through Tx signal lines T1 to Ti from the Tx driving circuit 732, the touch panel 700 according to an exemplary embodiment may provide Rx signal lines R1 to Rx signal lines R1 to Ti from the Rx driving circuit 733. The voltage of the touch sensing capacitor TSCAP_ij may be sensed through Rj).

The Tx driving circuit 732 according to an exemplary embodiment may apply a driving signal through the Tx signal lines T1 to Ti in response to the setup signal SUTx input from the touch sensing controller 731.

The Rx driving circuit 733 according to an embodiment senses the voltage of the touch sensing capacitor TSCAP_ij through the Rx signal lines R1 to Rj in response to the setup signal SURx input from the touch sensing controller 731 can do. In addition, the touch sensing controller may control the voltage sampling timing of the touch sensing capacitor TSCAP_ij by supplying the Rx sampling click SRx to the integrators built in the Rx driving circuit 733 to control the operation of the integrators.

15 illustrates an embodiment of the touch panel 700 illustrated in FIG. 14. Specifically, FIG. 15 shows a single routing type touch panel 700. 16 is a conceptual diagram illustrating a principle of sensing a touch in the touch panel 700.

The touch panel 700 according to an embodiment includes a Tx signal electrode Tx_TE along the Tx signal lines Txi in the touch sensing unit 710, and an Rx signal electrode along the Rx signal lines Rxj. Rx_TE) may be included. The Tx signal electrode Tx_TE and the Rx signal electrode Rx_TE may form a touch sensing capacitor TSCAP at a point where the Tx signal lines Txi and Rx signal lines Rxj intersect.

In the touch panel 700 according to an embodiment, the voltage applied to the touch sensing capacitors TSCAP_ij is Rx in response to a driving signal applied from the touch panel driving drive 730 through the Tx signal lines Txi. It can be detected through the signal lines Rxj. Here, the touch panel driving drive 730 may have a configuration including a touch sensing controller 731, a Tx driving circuit 732, and an Rx driving circuit 733. The Rx signal lines Rxj may contact the Rx signal pad Rx-TP provided in the touch panel driving drive 730 to apply a voltage of the touch sensing capacitor to the Rx driving circuit. The Tx signal lines Txi may contact the Tx signal pad Tx_TP provided in the touch panel driving driver 730 to transmit a driving signal from the Tx driving circuit.

The touch panel 700 according to an embodiment may form a plurality of first signal electrode arrays in which a plurality of Tx signal electrodes Tx_TE are arranged in a first direction. In addition, the plurality of Rx signal electrodes Rx_TE may form a plurality of second signal electrode arrays arranged in a second direction crossing the first direction so as not to contact the first signal electrodes. One end of the Tx signal line Txi is connected to one end of one first signal electrode row, and the other end is connected to the Tx signal pad Tx_TP, so that a driving signal may be applied to the first signal electrode row. The Rx signal line Rxj is connected to one end of one second signal electrode array, and the other end is connected to the Rx signal pad Rx_TP to lead the voltage signal of the touch sensing capacitor TSCAP.

The touch panel 700 according to an exemplary embodiment uses a driving signal applied to the Tx signal lines Txi and a voltage of the touch sensing capacitors TSCAP_ij sensed through the Rx signal lines Rxj, and changes in voltage. The location and size of the touch sensing capacitors TSCAP_ij with the presence may be sensed. Locations of the touch sensing capacitors TSCAP_ij having a voltage change may correspond to a touch point, and a size thereof may correspond to a touch intensity.

The circuit configurations of FIGS. 15 and 16 have the advantage of simple circuit configuration by a single routing method, and may be suitable when the size of the touch sensing unit 710 is not large.

17 is a partial cross-sectional view of a display panel 151 including a touch panel 700 according to an exemplary embodiment. Specifically, it is an X-X' cross-sectional view of FIG. 15.

The display panel 151 according to an exemplary embodiment includes a light emitting layer including a light emitting device ED corresponding to the active area AA, and the light emitting layer stacked on the light emitting layer to seal the light emitting device ED, and the active area AA and inactive It may include an encapsulation layer ENCAP provided in the region Bezel.

The display panel 151 according to an embodiment may include a touch panel 700 on the encapsulation layer ENCAP. Specifically, in the display panel 151 according to an exemplary embodiment, the Tx signal electrode Tx_TE and the Rx signal electrode Rx_TE of the touch panel 700 may be positioned. This structure can be called the TOE (Touch Sensor on Encapsulation Layer) structure.

In the display panel 151 according to an exemplary embodiment, in the pixel circuit 410 (see FIG. 9) of the pixel portion 310 (see FIG. 16 ), the second transistor T2 may be disposed on the substrate SUB. The substrate SUB may have a soft property, and the display panel 151 may flexibly form a curvature.

Specifically, the second transistor T2 includes a first node electrode LE1 corresponding to a gate electrode, a second node electrode NE2 corresponding to a source electrode or a drain electrode, and a third electrode corresponding to a drain electrode or a source electrode. It may include a node electrode LE3 and a semiconductor layer SEMI.

The first node electrode LE1 and the semiconductor layer SEMI may overlap with the gate insulating layer GI interposed therebetween. The second node electrode LE2 is formed on the insulating layer INS to contact one side of the semiconductor layer SEMI, and the third node electrode NE3 is formed on the insulating layer INS to form the semiconductor layer SEMI. You can contact the other side of ).

The light emitting element ED is formed on a first electrode E1 corresponding to an anode electrode, a light emitting part EL formed on the first electrode E1, and a second light emitting part EL corresponding to the cathode electrode. It may include an electrode E2 and the like.

The first electrode E1 may be electrically connected to the second node electrode NE2 of the second transistor T2 exposed through a pixel contact hole penetrating the planarization layer PLN.

The light emitting part EL may be formed on the first electrode E1 of the light emitting area provided by the bank BANK. Here, the light emitting unit EL may correspond to the organic light emitting diode shown in FIG. 10. The second electrode E2 may be formed to face the first electrode E1 with the light emitting part EL therebetween.

The encapsulation unit ENCAP is a light emitting device ED that is vulnerable to external moisture or oxygen, and may block the penetration of external moisture or oxygen. The encapsulation part ECAP may be formed of a single layer, but may be formed of a plurality of layers PAS1, PCL, and PAS2 as shown in FIG. 19.

For example, when the encapsulation part (ENCAP) is made of a plurality of layers (PAS1, PCL, PAS2), the encapsulation part (ENCAP) comprises one or more inorganic encapsulations (PAS1, PAS2) and one or more organic encapsulation layers (PCL). Can include. As a specific example, the encapsulation unit ENCAP may have a structure in which a first inorganic encapsulation layer PAS1, an organic encapsulation layer PCL, and a second inorganic encapsulation layer PAS2 are sequentially stacked. Here, the organic encapsulation layer PCL may further include at least one organic encapsulation layer or at least one inorganic encapsulation layer.

Since the first inorganic encapsulation layer PAS1 is deposited at a low temperature, the first inorganic encapsulation layer PAS1 may prevent damage to the light emitting portion EL including an organic material vulnerable to a high temperature atmosphere during the deposition process.

The organic encapsulation layer PCL may be formed to have a smaller area than the first inorganic encapsulation layer PAS1, and in this case, the organic encapsulation layer PCL is formed to expose both ends of the first inorganic encapsulation layer PAS1. Can be. The organic encapsulation layer PCL serves as a buffer to relieve stress between layers due to bending of the touch display device, which is an organic light emitting display device, and may enhance flattening performance.

Meanwhile, when the organic encapsulation layer PCL is formed through the inkjet method, one or more dams DAM may be formed in a boundary area of a portion that outputs an image.

For example, as illustrated in FIG. 19, the dam region may be located between a pad region in which a plurality of Tx signal pads Tx_TP and a plurality of Rx signal pads Rx_TP are formed and a portion for outputting an image. In such a dam region, a first dam (DAM 1) adjacent to a portion that outputs an image and a second dam (DAM 2) adjacent to the pad region may exist.

One or more dams disposed in the dam area (DAM) are, when a liquid-type organic encapsulation layer (PCL) is dropped onto a portion where an image is output, and a liquid-type organic encapsulation layer (PCL) is applied at the boundary of the image output portion. It is possible to prevent invasion of the collapsed pad area. As shown in FIG. 19, this effect may be further increased when the first dam (DAM 1) and the second dam (DAM 2) are provided.

The primary dam (DAM 1) and/or the secondary dam (DAM 2) may be formed in a single-layer or multi-layer structure. For example, the first dam (DAM 1) and/or the second dam (DAM 2) may be simultaneously formed of the same material as at least one of a bank and a spacer (not shown). In this case, the dam structure can be formed without an additional process of masking and an increase in cost.

In addition, the first dam (DAM 1) and / or the second dam (DAM 2), as shown in Figure 19, the first inorganic encapsulation layer (PAS 1) and / or the second inorganic encapsulation layer (PAS 2) is It may have a structure stacked on a bank.

In addition, the organic encapsulation layer (PCL) containing an organic material, as shown in Figure 19, the first inorganic encapsulation layer (PAS 1) and / or the second inorganic encapsulation layer (PAS 2) on the bank (BANK). It may have a stacked structure.

In addition, the organic encapsulation layer PCL including an organic material may be positioned only on the inner side of the primary dam DAM 1, as shown in FIG. 19.

Alternatively, the organic encapsulation layer PCL including an organic material may be located on at least a portion of the first dam (DAM 1) and the second dam (DAM 2). For example, organic bags (PCL) may be located above the primary dam (DAM 1).

The second inorganic encapsulation layer PAS 2 may be formed to cover the upper and side surfaces of the organic encapsulation layer PCL and the first inorganic encapsulation layer PAS 1 on the substrate on which the organic encapsulation layer PCL is formed. . The second inorganic encapsulation layer PAS 2 minimizes or blocks external moisture or oxygen from penetrating into the first inorganic encapsulation layer PAS 1 and the organic encapsulation layer PCL.

A touch buffer layer T-BUF may be disposed on the encapsulation unit ENCAP. The touch buffer layer T-BUF includes a touch sensor metal including a Tx signal electrode Tx_TE, an Rx signal electrode Rx_TE, Tx signal lines Txi, and Rx signal lines Rxj, and a light emitting element ED. ) May be positioned between the second electrodes E2. Specifically, the second electrode E2 extends from the active area AA to the non-active area Bezel to prevent noise from being transmitted to the signal lines Txi and Rxj.

The touch buffer layer T-BUF may be designed to maintain a predetermined minimum separation distance between the touch sensor metal and the second electrode E2 of the light emitting device ED. Accordingly, it is possible to reduce or prevent parasitic capacitance formed between the touch sensor metal and the second electrode E2 of the light emitting element ED, and thereby, a decrease in touch sensitivity due to the parasitic capacitance can be prevented.

In the touch buffer layer (T-BUF), a chemical solution (developer or etchant, etc.) used in the manufacturing process of the touch sensor metal disposed on the touch buffer layer (T-BUF) or moisture from outside emit light containing organic substances. It can block penetration into the EL. Accordingly, the touch buffer layer T-BUF may prevent damage to the light emitting portion EL that is vulnerable to a chemical solution or moisture.

A plurality of Tx signal electrodes Tx_TE and a plurality of Rx signal electrodes Rx_TE are intersected on the touch buffer layer T-BUF, and the signal electrodes may be cross-connected through a bridge. The bridge may include a first bridge 1 connecting the Tx signal electrodes Tx_TE and a second bridge 2 connecting the Rx signal electrodes Rx_TE. Specifically, a plurality of Tx signal electrodes (Tx_TE), a plurality of RX signal electrodes (Rx_TE), and the first bridge (Bridge 1) and the second bridge (Bridge 2) are on different layers with the touch insulating layer IND interposed therebetween. Can be located.

A point where the plurality of signal electrodes Rx_TE and Tx_TE intersect, that is, a point where a bridge is located may be on a bank. Accordingly, it is possible to prevent a decrease in the aperture ratio due to a point where the plurality of signal electrodes Rx_TE and Tx_TE intersect.

A touch passivation layer PAC may be disposed on the plurality of Tx signal electrodes Tx_TE and the plurality of Rx signal electrodes Rx_TE. The touch passivation layer PAC may extend before or after the dam DAM and may be disposed on the Tx signal electrodes Txi and the Rx signal electrodes Rxj.

Meanwhile, the cross-sectional view of FIG. 17 conceptually shows a structure, and the position, thickness, or width of each pattern may be changed according to a viewing direction or position, and a connection structure of various patterns may be changed. In addition to the several layers shown, there may be additional layers. In addition, some of the illustrated layers may be omitted or may be integrated. For example, the width of the bank may be narrower than that of the drawing, the dam may be omitted, or the height of the dam may be lower or higher than that of the drawing.

The circuit configuration of the touch panel 700 illustrated in FIG. 15 is advantageous in that the circuit configuration is simple in a single routing method, and signal lines can be provided even in a bezel having a relatively small width. However, the single routing method may not be suitable for providing the touch panel 700 on the display panel 151 including the large pixel portion 310. In recent years, as the pixel unit 310 becomes large, the area of the touch sensing unit 710 may be increased, and the touch sensing unit 710 may require more signal electrodes Tx_TE and Rx_TE. In the single routing method, as the number of signal electrodes Tx_TE and Rx_TE increases, internal resistance increases, and thus touch sensitivity decreases. Specifically, the touch sensitivity of the touch panel is better as the time constance of the touch sensing capacitor TSCAP included in the touch sensing unit 710 is small. Since the time constant of the touch sensing capacitor TSCAP is inversely proportional to the size of the internal resistance, the touch sensitivity may decrease as the internal resistance increases.

In order to solve the above problem that may occur as the area of the touch sensing unit 710 increases, the touch panel 700 having a circuit configuration of a double routing method has been recently used. The double routing method refers to a method of forming a closed loop by connecting signal lines Txi and Rxj at both ends of a signal electrode array formed by the signal electrodes Tx_TE and Rx_TE.

Specifically, in the touch panel according to an embodiment, the signal electrodes Tx_TE and Rx_TE are arranged in the first direction so that they do not contact the plurality of first signal electrode rows and the plurality of first signal electrode rows arranged in a first direction. It may include a plurality of second signal electrode arrays arranged in a second direction intersecting with each other. Here, the first signal electrode row may be composed of Tx signal electrodes Tx_TE, and the second signal electrode row may be composed of Rx signal electrodes Rx_TE. The signal lines Txi and Rxj are connected to the plurality of first signal electrode arrays to apply a driving signal and a voltage signal generated from the plurality of second signal electrode rows in response to the driving signal. It may include second signal lines. Here, the first signal lines may be Tx signal lines Txi, and the second signal lines may be Rx signal lines Rxj.

In the double routing method, first signal lines may be connected to both ends of the first signal electrode row to form a first closed loop CLi together with the first signal electrode row. Specifically, FIG. 18 shows an embodiment of a double routing type touch panel 700 forming a first closed loop. The first closed loop CLi may be connected to a first signal pad to which a driving signal is applied. Here, the first signal pad may be a Tx signal pad Tx_TP. Specifically, the first Tx signal line TxLi and the second signal line TxRi connected to both ends of the Tx signal electrode row and the Tx signal electrode row may form the closed loop CLi.

In addition, in the double routing method, second signal lines may be connected to both ends of the second signal electrode row to form a second closed loop together with the second signal electrode row. Also, the second closed loop may be connected to a second signal pad that leads the voltage signal. Here, the second signal pad may be an Rx signal pad Rx_TP.

The circuit configuration of the double routing method as described above is 1/n compared to the case of the single routing wiring (here, n may correspond to the number of signal electrodes Tx_TE and Rx_TE included in the closed curve CLi). As the internal resistance can be reduced, the touch sensitivity of the touch panel 700 can be increased. However, since the double routing method requires many signal lines (Txi, Rxj), it may cause a problem in that the thickness of the bezel portion of the display panel 151 increases in the TOE structure.

19 is a partial cross-sectional view of a display panel 151 including a touch panel 700 according to an exemplary embodiment. Specifically, FIG. 19 is a cross-sectional view Y-Y' of FIG. 18. Hereinafter, differences from the cross-sectional view of FIG. 17 will be mainly described.

The TOE structure is a method including the configuration of the touch panel 700 on the encapsulation layer (ENCAP) of the display panel 151. In the TOE structure, when the number of signal lines Txi and Rxi of the touch panel 700 increases, the width corresponding to the bezel of the display panel 151 may increase.

The signal lines Txi and Rxi of the touch panel 700 are larger in the case of the double routing method than in the single routing method. In the single routing method, signal lines are connected to one end of the signal electrode row, whereas the flexible routing method is because signal lines are connected to both ends of the signal electrode row. The display panel 151 including the double routing type touch panel 700 may require a bezel more than the display panel 151 including the single routing type touch panel 700.

Specifically, FIG. 19 shows a relatively wide bezel portion in order for the display panel 151 to provide all of the second Tx signal lines TxRi of the double routing type touch panel 700 on the encapsulation layer ENCAP. ) Is shown. The second Tx signal lines TxRi may be arranged to form a preset interval in a single layer in a region corresponding to the bezel.

20 is a partial cross-sectional view of the display panel 151 including the touch panel 700 according to an exemplary embodiment. Specifically, FIG. 20 includes arrangement of signal lines Txi capable of reducing the width of the bezel of FIG. 19. Hereinafter, a description will be given focusing on the difference from FIG. 19.

A mobile terminal according to an embodiment detects a display panel including an active area AA on which an image is output and an inactive area (= bezel part) surrounding the active area, and a touch applied to the display panel by being embedded in the display panel And a touch panel, wherein the touch panel includes a plurality of signal electrodes Tx_TE and Rx_TE, which are provided on the active area AA and whose voltage is varied in response to the applied touch, and on the non-active area (Bezel). And the signal lines Txi and Rxi, and the signal lines Txi and Rxi may be divided into a plurality of layers stacked on the non-active region Bezel.

The plurality of layers stacked on the non-active region (Bezel) includes a first layer including some of the signal lines, a second layer including the rest of the signal lines, and the first layer and the second layer. It may include an insulating layer IND to insulate. 20 illustrates an embodiment in which second Tx signal electrodes TxRi included in a bezel part are provided in a multilayer structure. Specifically, some of the second Tx signal electrodes TxRi (TxR2, TxR4, TxR6, TxR8) may be included in the first layer, and the rest (TxR1, TxR3, TxR5, TxR7) may be included in the second layer. The second layer may be stacked on the first layer and may include an insulating layer IND therebetween.

The TOE type display panel according to an exemplary embodiment may be provided by forming a laminated structure in which signal lines of the touch panel are stacked on a bezel. Through this, it is possible to prevent the width of the bezel from being widened to provide signal lines.

20 to 23 illustrate an embodiment of a stacked structure of signal lines in the touch panel 700. Specifically, FIGS. 20 to 23 may correspond to area A of FIG. 18.

Specifically, FIG. 21 shows an embodiment in which the signal lines TxRi are provided in a single layer. When the signal lines TxRi are provided as a single layer, the width of the bezel may increase in proportion to the number of the signal lines TxRi. Accordingly, in the case of a double routing method requiring many signal lines, a bezel portion having a relatively wide width may be required.

22 illustrates an embodiment in which the signal lines TxRi are provided in a plurality of layers in order to compensate for the above problem. Some of the signal lines TxR8 and TxR6 may be included in the first layer (FIG. 22(a)), and the rest of the signal lines TxR7 and TxR5 may be included in the second layer stacked on the first layer ( Fig. 22(c)). In order to insulate some of the signal lines (TxR8, TxR6) provided in the first layer and the rest (TxR7, TxR5) of the signal lines provided in the second layer, an insulating layer (IND) between the first and second layers It may include.

23 illustrates an arrangement relationship between some of the signal lines TxR8 and TxR6 provided in the first layer and the rest of the signal lines TxR7 and TxR5 provided in the second layer.

The signal lines TxR8 and TxR6 provided in the first layer are arranged at a predetermined interval, and the signal lines TxR7 and TxR5 provided in the second layer are signal lines TxR8 and TxR8 provided in the first layer. TxR6) can be arranged according to the inter-region. (Fig. 23(a))

At this time, in order to implement a narrower width of the bezel, the distance formed between the signal lines TxR8 and TxR6 provided in the first layer is smaller than the width of one signal line, and thus one signal line TxR7 provided in the second layer At least one side of TxR5 may overlap the signal lines TxR8 and TxR6 provided in the first layer. (Fig. 23(b))

In addition, the signal lines TxR8 and TxR6 provided in the first layer are arranged at predetermined intervals, and the signal lines TxR7 and TxR5 provided in the second layer are signal lines provided in the first layer ( TxR8, TxR6) can be arranged according to (Fig. 23(c))

The width of the bezel part is that the bezel part 3 shown in FIG. 23(c) is less than the width of the bezel part 1 and bezel 2 shown in FIGS. 23(a) and 23(b). It can be narrow. Additionally, the bezel part 2 shown in FIG. 23(b) may be narrower than the bezel part 1 shown in FIG. 23(a).

In the stacked structure of the signal lines, the display panel 151 may be used only at some of the corners. Specifically, when the display panel is a flexible display and the surface exposed from the front surface is adjusted by winding or bending in a third direction, a stacked structure of the signal lines may be used at both corners perpendicular to the third direction.

The above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

Claims

A display panel including an active area in which an image is output and an inactive area surrounding the active area; And

Includes; a touch panel embedded in the display panel for sensing a touch applied to the display panel,

The touch panel

A plurality of signal electrodes provided on the active region and having a voltage varying in response to an applied touch;

Signal lines provided on the non-active region to apply a driving signal to the signal electrodes or to receive a voltage signal; and

The signal lines are

A mobile terminal, characterized in that it is divided into a plurality of layers stacked on the inactive area.
The method of claim 1,

The plurality of layers

A first layer including some of the signal lines;

A second layer including the rest of the signal lines; And

And an insulating layer insulating the first layer and the second layer.
The method of claim 2,

The signal lines provided in the first layer are arranged at a preset interval,

The signal lines provided in the second layer are arranged to match a region between the signal lines provided in the first layer.
The method of claim 3,

Wherein the preset interval is smaller than a width of one signal line, and one signal line provided in the second layer overlaps both sides of the signal lines provided in the first layer.
The method of claim 2,

The signal lines provided in the first layer are arranged at a preset interval,

The signal lines provided in the second layer are arranged to match the signal lines provided in the first layer.
The method of claim 1,

The plurality of signal electrodes

A plurality of first signal electrode arrays arranged in a first direction; And

Including a plurality of second signal electrode arrays arranged in a second direction crossing the first direction so as not to contact the first signal electrodes, and

The signal lines are

First signal lines connected to the plurality of first signal electrode rows to apply a driving signal; And

And second signal lines for reading voltage signals of the plurality of second signal electrode arrays in response to the driving signal.
The method of claim 6,

The first signal lines are

A mobile terminal, characterized in that it is connected to both ends of the first signal electrode row to form a first closed loop together with the first signal electrode row.
The method of claim 7,

The first closed loop is

A mobile terminal, characterized in that it is connected to a first signal pad to which the driving signal is applied.
According to claim 6

The second signal lines are

A mobile terminal, characterized in that it is connected to both ends of the second signal electrode array to form a second closed loop together with the second signal electrode array.
The method of claim 9,

The second closed loop is

And connected to a second signal pad that leads the voltage signal.
The method of claim 1,

The display panel

An emission layer including an organic light emitting diode corresponding to the active region;

And an encapsulation layer laminated on the emission layer to seal the organic light emitting diode, and provided in the active region and the non-active region,

The touch panel

Mobile terminal, characterized in that provided on the encapsulation layer.
The method of claim 11,

The organic generation diode is

It is connected to a common electrode provided between the anti-blocking layer and the encapsulation layer,

The common electrode is

And extending to the non-active area to prevent noise from being transmitted to the signal lines.
The method of claim 1,

The display panel is a mobile terminal, characterized in that the flexible display panel.
The method of claim 13,

The mobile terminal

And a roller member that winds or bends the display panel in a third direction to change a surface on which the active area is exposed from a front surface.
The method of claim 14,

The signal lines are

A mobile terminal, characterized in that it is divided into a plurality of layers in both non-active areas perpendicular to the third direction.