KR102138513B1 - Touch panel and mobile terminal - Google Patents

Abstract

The present invention relates to a touch panel and a mobile terminal including the same, comprising: a touchable front part and a cover part having a rear part opposite the front part; It is located at the bottom of the rear portion, and a touch sensing unit for detecting a predetermined touch signal; It is located at the lower end of the conduction unit, and is characterized by including a magnetic field generation unit for generating a magnetic field.

Description

Touch panel and mobile terminal {TOUCH PANEL AND MOBILE TERMINAL}

The present invention relates to a touch panel and a mobile terminal, and more particularly, to a touch panel and a mobile terminal including a magnetic field generating unit.

The touch panel is widely used as a user interface for computers, mobile phones, personal portable media players, white appliances such as refrigerators, and the like. Furthermore, in recent years, the need for technology to expand the display area while reducing the weight and thickness of the terminal in mobile phones and personal portable media players has increased, and the touch panel is widely used as a touch screen panel that includes not only a simple user interface but also the functions of the display. It became.

The surface of the touch screen panel may detect a touch input such as a touch pen or a user's finger, and detect a touch signal generated at a point where the touch input is located to determine its location. In order to sense the touch signal, a touch screen panel or a capacitive type technology is applied to the touch screen panel. In recent years, demand for a capacitive type touch screen panel has increased.

The capacitive touch screen panel may use at least one of a single touch method and a multi touch method, and the touch screen panel used for this may be configured using one or more layers. In addition, the at least one layer may include a plurality of electrodes electrically insulated from each other. Also, a plurality of electrodes of a predetermined layer may be arranged in a specific coordinate form such as X-Y. Accordingly, the touch controller 185 of the touch panel repeatedly selects one electrode through each of the X-axis electrode and the Y-axis electrode and measures the capacitance thereof, and the X-axis electrode having the most significant capacitance change And the closest point of the Y-axis electrode with the most significant capacitance change can be determined as the touch position.

Each of the X-axis electrode and the Y-axis electrode is connected to the touch controller 185 through a trace, and the trace is generally provided at the edge of the touch screen panel, that is, the bezel.

An object of the present invention is to provide a magnetic field generating unit in one area of the touch screen panel.

An object of the present invention is to charge an external device of the touch screen panel, for example, a pen for touch, based on the magnetic field generated by the magnetic field generator.

An object of the present invention is to detect a touch signal using a magnetic field generating unit without a separate electrode.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those having ordinary knowledge in the technical field to which the present invention belongs from the following description. Will be able to.

In order to achieve the above object, the touch panel according to the present invention includes a touchable front part and a cover part having a rear part opposite the front part; It is located at the bottom of the rear portion, and a touch sensing unit for detecting a predetermined touch signal; It is located at the bottom of the conductive portion and includes a magnetic field generating portion for generating a magnetic field.

The touch sensing unit includes an electrode unit and a trace unit, and the magnetic field generating unit is provided at a lower end of the trace unit. The electrode portion includes a first electrode portion including a first pattern electrode and a second electrode portion including a second pattern electrode, and the trace portion includes a first trace portion and the second trace portion connected to the first electrode portion. It may include a second trace portion connected to the electrode portion.

And, it includes an insulating portion located between the first electrode portion and the second electrode portion.

Meanwhile, a transparent adhesive film including an adhesive component is provided between the cover part and the touch sensing part, and the transparent adhesive film may include optical clear adhesive (OCA).

The magnetic field generator may be provided in a bezel area of the touch panel. Here, the bezel area is an area where the above-described trace part is provided, and is located outside the area where the electrode part is provided.

The magnetic field generating unit includes a loop coil for generating a magnetic field, and the touch panel may further include a capacitor for generating a magnetic field together with the loop coil.

According to an embodiment of the present invention, the magnetic field generating unit generates resonant power having a predetermined resonant frequency based on the capacitor C and the loop coil L, and the generated resonant power is external power. It can be output to the receiving device.

Meanwhile, according to an embodiment of the present invention, the magnetic field generator may generate a magnetic field having a changed size according to at least one of an external touch touch and an external proximity touch. In addition, it is connected to the magnetic field generating unit, further comprising a touch controller for detecting a touch event based on the magnetic field of the changed size, the touch controller is connected to the trace unit, the touch screen flexible circuit board (FPCB: Flexible Printed Circuit Board).

The present invention relates to a mobile terminal including a touch panel having the above-described configuration, and further includes a power receiving device having a power receiving unit having a resonance frequency equal to a resonance frequency generated by the magnetic field generating unit of the touch panel. Can.

Further, the touch sensing unit may sense the touch signal generated by the power receiving device. Here, the power receiving device may include a touch pen for generating a touch signal on the touch panel.

According to at least one of the embodiments of the present invention, power can be supplied by providing a magnetic field generator corresponding to a loop coil in an area of a touch panel without a separate power supply for a touch screen external device such as a pen for touch. It works.

In addition, the present invention has an effect of expanding a region capable of touch sensing by providing a magnetic field generating unit in a portion where no electrode for touch sensing is provided.

In addition, the present invention has an effect capable of minimizing the space for providing the magnetic field generator by providing the magnetic field generator at the bottom of the trace.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention (block diagram).
2 is a view showing a simplified perspective view and a magnetic field generating unit of the touch panel according to the present invention.
3 is a view showing a touch sensing unit according to the present invention.
4 is a sectional view showing a touch panel according to the present invention.
5 is a view showing a touch panel and a control unit related thereto according to the present invention.
6 and 7 are diagrams illustrating a principle in which a touch signal is recognized by the magnetic field generating unit and the electrode unit.
8 is a diagram illustrating a simplified circuit diagram for supplying electric power to an external power receiver by a magnetic field generator in case of an embodiment of the present invention.
9 is a diagram illustrating an example in which the mobile terminal according to the present invention is a digitizer and the power receiving device is a touch pen.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the embodiments of the present invention exemplified below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

The suffixes'modules' and'parts' for the components used in the following description are given or mixed only considering the ease of writing the specification, and do not have meanings or roles distinguished from each other.

Hereinafter, components of a mobile terminal in which the present invention can be implemented will be described with reference to FIG. 1. The mobile terminal in which the present invention can be implemented includes at least one of the components shown in FIG. 1, but may include more components than the components shown in FIG. 1 as necessary, and uses fewer components. It may include.

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

The mobile terminal 100 includes a wireless communication unit 110, an A/V (Audio/Video) input module 120, a touch panel 130, a sensing unit 140, an output unit 150, a memory 160, It may include an interface module 170, a control unit 180 and a power supply unit 190. Since the components shown in FIG. 1 are not essential, the mobile terminal 100 with more or fewer components may be implemented.

Hereinafter, the components will be described in turn.

The wireless communication unit 110 may include one or more modules that enable wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast 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. .

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

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may mean a server that generates and transmits broadcast signals and/or broadcast-related information or a server that receives previously generated broadcast signals and/or broadcast-related information and transmits them to a terminal. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, and a data broadcast signal, and may also include a TV broadcast signal or a radio broadcast signal combined with a data broadcast signal.

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

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

The broadcast receiving module 111, for example, DMB-T (Digital Multimedia Broadcasting-Terrestrial), DMB-S (Digital Multimedia Broadcasting-Satellite), MediaFLO (Media Forward Link Only), DVB-H (Digital Video Broadcast) Digital broadcasting signals can be received using digital broadcasting systems such as -Handheld) and ISDB-T (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be configured to be suitable for other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and/or broadcast-related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives wireless signals to and from at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call signal, or a text/multimedia message.

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. Wireless Internet technology (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) may be used.

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, etc. may be used as short range communication technology.

The location information module 115 is a module for obtaining the location of the mobile terminal 100, and a representative example thereof is a Global Position System (GPS) module. The GPS module may operate in conjunction with a GPS satellite that transmits coordinates of a current location and coordinates on a driving route. At this time, the mobile terminal 100 may display map information on the display unit 151 of the mobile terminal 100 using the GPS coordinates received from the GPS satellite.

Referring to FIG. 1, the A/V (Audio/Video) input module 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by an image sensor in a video call mode or a shooting mode. The processed image frame may be displayed on the display unit 151.

The image frames processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more cameras 121 may be provided according to the use environment.

The microphone 122 receives an external sound signal by a microphone in a call mode, a recording mode, or a voice recognition mode, and processes it as electrical voice data. The processed voice data may be converted into a form transmittable to a mobile communication base station through the mobile communication module 112 and output. Various noise reduction algorithms for removing noise generated in the process of receiving an external sound signal may be implemented in the microphone 122.

The touch panel 130 is a type of signal input unit for a user to generate input data for controlling the operation of the terminal. Although not shown, the mobile terminal 100 according to the present invention may be provided with a key pad dome switch, a jog wheel, a jog switch, etc. in addition to the touch panel 130 as a user input unit.

The sensing unit 140 includes a mobile terminal 100 such as an open/closed state of the mobile terminal 100, a location of the mobile terminal 100, presence or absence of user contact, orientation of the mobile terminal 100, acceleration/deceleration of the mobile terminal 100, and the like. ) Is sensed to generate a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it can sense whether the slide phone is opened or closed. In addition, it is also possible to sense whether the power supply unit 190 is supplied with power, whether the interface module 170 is coupled with external devices, or the like. Meanwhile, the sensing unit 140 may include a proximity sensor 141.

The output unit 150 is for generating output related to vision, hearing, or tactile sense, and includes, for example, a display unit 151, an audio output module 152, an alarm module 153, a haptic module 154, and a projector module ( 155).

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in a call mode, it displays a user interface (UI) or a graphical user interface (GUI) related to the call. When the mobile terminal 100 is in a video call mode or a shooting mode, it displays a photographed and/or received video, UI, or GUI.

The display unit 151 includes a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), and a flexible display (flexible). display) and a 3D display.

Some of these displays may be of a transparent type or a light transmissive type so that the outside can be seen through them. This may be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparant OLED). The rear structure of the display unit 151 may also be configured as a light transmissive structure. Through this structure, the user can see an object located behind the terminal body through an area occupied by the display unit 151 of the terminal body.

Two or more display units 151 may be present depending on the implementation form of the mobile terminal 100. For example, a plurality of display units may be spaced apart from one surface or integrally disposed in the mobile terminal 100, or may be disposed on different surfaces.

When the display unit 151 and a sensor detecting a touch operation (hereinafter referred to as a “touch sensor”) form a mutual layer structure (hereinafter, referred to as a “touch panel”), the display unit 151 may be used in addition to an output device. It can also be used as an input device. That is, the display unit 151 may be used as a user input unit such as the touch panel 130.

The touch panel 130 may be configured to convert a change in pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch panel 130 may be configured to detect not only the touched position and area, but also the pressure at the time of touch.

When there is a touch input to the touch panel 130, the signal(s) corresponding to the touch input is sent to the touch controller. The touch controller processes the signal(s) and then transmits corresponding data to the controller 180. Accordingly, the control unit 180 can know which area of the display unit 151 has been touched, and the like.

The proximity sensor 141 may be disposed inside the mobile terminal 100 surrounded by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or an object present in the vicinity without mechanical contact using electromagnetic force or infrared rays. Proximity sensors have a longer lifespan and higher utilization than contact sensors.

Examples of the proximity sensor include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive type proximity sensor, a magnetic type proximity sensor, and an infrared proximity sensor. When the touch screen is capacitive, it is configured to detect the proximity of the pointer due to a change in electric field according to the proximity of the pointer. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of description, the act of causing the pointer to be recognized as being located on the touch screen without being touched by the pointer on the touch screen is referred to as a “proximity touch”, and the touch The act of actually touching the pointer on the screen is referred to as "contact touch". The location on the touch screen that is a proximity touch with a pointer refers to a location where the pointer is perpendicular to the touch screen when the pointer is touched close.

The proximity sensor detects a proximity touch and a proximity touch pattern (eg, proximity touch distance, proximity touch direction, proximity touch speed, proximity 　 touch time, proximity touch position, proximity touch movement state, etc.). Information corresponding to the sensed proximity touch operation and proximity touch pattern may be output on the touch screen. Hereinafter, for convenience of description, a proximity touch and a touch touch are collectively referred to as a touch or a touch signal.

The audio output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, or the like. The sound output module 152 may also output sound signals related to functions (for example, call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. The sound output module 152 may include a receiver, a speaker, and a buzzer.

The alarm module 153 outputs a signal for notifying the occurrence of an event in the mobile terminal 100. Examples of events generated in the mobile terminal 100 include call signal reception, message reception, key signal input, and touch input. The alarm module 153 may output a signal for notifying the occurrence of an event by vibrating in a form other than a video signal or an audio signal, for example, vibration. The video signal or audio signal may also be output through the display unit 151 or the audio output module 152, so that they 151 and 152 may be classified as part of the alarm module 153.

The haptic module 154 generates various tactile effects that the user can feel. A typical example of the tactile effect generated by the haptic module 154 is vibration. The intensity and pattern of vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to vibration, the haptic module 154 is used for stimulation such as pin arrangement that vertically moves with respect to the contact skin surface, jet or suction power of air through a spray or intake, grazing on the skin surface, contact with an electrode, and electrostatic force. Various tactile effects can be generated, such as the effect caused by and the effect of reproducing the feeling of cold and warm using an element capable of absorbing heat or generating heat.

The haptic module 154 may not only deliver the tactile effect through direct contact, but may also be implemented so that the user can feel the tactile effect through muscle sensations such as fingers or arms. Two or more haptic modules 154 may be provided according to a configuration aspect of the portable terminal 100.

The projector module 155 is a component for performing an image project function using the mobile terminal 100, and is the same as the image displayed on the display mother 151 according to the control signal of the controller 180 Alternatively, at least some of the other images may be displayed on an external screen or wall.

The memory 160 may store a program for processing and control of the controller 180, and temporarily store input/output data (for example, a phone book, message, audio, still image, video, etc.). It can also perform the function. The frequency of use for each of the data (eg, each phone number, each message, and frequency of use for each multimedia) may also be stored in the memory unit 160. In addition, the memory unit 160 may store data related to various patterns of vibration and sound output when a touch is input on the touch screen.

The memory 160 is a flash memory type, a hard disk type, a multimedia card micro type, a memory of a card type (for example, SD or XD memory), RAM (Random Access Memory, RAM), Static Random Access Memory (SRAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), magnetic memory, magnetic It may include a storage medium of at least one type of disk, optical disk. The mobile terminal 100 may operate in relation to a web storage that performs a storage function of the memory 160 on the Internet.

In addition, the memory 160 may include at least one of a region information database of interest for storing point of interest (POI) and a geographic information database for storing geographic information. Here, the geographic information includes map data produced according to road and traffic regulation conditions previously investigated in a predetermined information center. The region of interest is preferably a specific region preset by the user, for example, a user-interested region of interest, such as a house, a company, or a gym. However, the region of interest may be an important region such as a restaurant, hotel, gas station, school, public institution, department store, or park, which is stored in advance in a predetermined navigation server or terminal. Here, the region of interest information refers to the information of the region of interest described above, and may include information about the time of interest of the user corresponding to the region of interest.

The interface module 170 serves as a passage with all external devices connected to the mobile terminal 100. The interface module 170 receives data from an external device, receives power, transfers it to each component inside the mobile terminal 100, or allows data inside the mobile terminal 100 to be transmitted to the external device. For example, wired/wireless headset port, external charger port, wired/wireless data port, memory card port, port for connecting devices equipped with an identification module, audio input/output (I/O) port, A video input/output (I/O) port, an earphone port, and the like may be included in the interface module 170.

The identification module is a chip that stores various information for authenticating the usage rights of the mobile terminal 100, a user identification module (UIM), a subscriber identification module (SIM), and a universal user authentication module ( Universal Subscriber Identity Module (USIM). The device provided with the identification module (hereinafter referred to as an'identification device') may be manufactured in a smart card format. Therefore, the identification device may be connected to the terminal 100 through a port.

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

The controller 180 controls the overall operation of the mobile terminal 100. For example, it performs related control and processing for voice calls, data communication, video calls, and the like. The controller 180 may include a multimedia module 183 for multimedia playback. In addition, as a user sets a graphic user interface, a graphic tool 182 that controls a graphic tool that is displayed on the standby screen of the display unit 151 or a graphic effect that can be displayed on the standby screen may be provided. In addition, a graphic user interface module 181 may be provided to control other graphic user interfaces to interlock or change states according to the interaction between the graphic user interfaces.

Here, the multimedia module 183, the graphic module 182, and the graphic user interface module 181 may be implemented in the controller 180, or may be implemented separately from the controller 180.

The controller 180 may perform a pattern recognition process capable of recognizing handwriting input or picture drawing input performed on a touch screen as text and images, respectively.

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

The various embodiments described herein can be implemented in a computer- or similar device-readable recording medium using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code can be implemented in a software application written in an appropriate programming language. The software code may be stored in the memory 160 and executed by the controller 180.

Next, the controller 180 of the mobile terminal 100 according to the present invention, when receiving a geographic information and a region of interest information display command, the region of interest within a predetermined distance based on any reference coordinates from the memory 160 The display module may be controlled to search for information and the geographic information, and to display the searched region of interest information and the geographic information. This will be described in detail later.

2 is a view showing a simplified perspective view and a magnetic field generating unit 137 of the touch panel 130 according to the present invention.

The touch panel 130 according to the present invention may include a cover unit 131, a touch sensing unit 135, and a magnetic field generating unit 137.

Here, the cover portion 131 is provided on the surface of the touch panel 130 to protect the touch panel 130 from the outside, and a touch input is possible by a user or a touch pen through the front portion of the cover portion 131. Here, the cover portion 131 may be made of a material such as plastic or glass, such as Plexiglas and polyester (PET).

A touch sensing unit 135 may be provided on the rear surface of the cover unit 131. The cover unit 131 and the touch sensing unit 135 may be provided with a transparent adhesive film including an adhesive component. Here, the transparent adhesive film may be OCA (Optical Clear Adhesive).

The touch sensing unit 135 includes a predetermined electrode unit and a trace unit for connecting the electrode unit to the touch controller 185 which will be described later. Here, when looking at the front view of the touch sensing unit 135, the first sensing region 138 and the traces in which the electrode units are arranged as shown in FIG. 3(a) are arranged, and the agent located outside the first sensing region 138 is disposed. 2 includes a detection area 136.

The first sensing region 138 includes a first electrode unit X1, X2, X3, X4, X5, X6, X7 including a plurality of electrodes of the first pattern and a second electrode including a plurality of electrodes of the second pattern Electrode portions Y1, Y2, Y3, Y4, Y5, Y6, and Y7 are provided. Here, the electrodes of the first electrode units (X1, X2, X3, X4, X5, X6, X7) and the second electrode units (Y1, Y2, Y3, Y4, Y5, Y6, Y7) are the transfer electrodes (Tx) And it may correspond to at least one of the receiving electrode (Rx). Here, the first electrode unit (X1, X2, X3, X4, X5, X6, X7) and the second electrode unit (Y1, Y2, Y3, Y4, Y5, Y6, Y7) are each a plurality of electrodes (X1, X2 , X3, X4, X5, X6, X7, Y1, Y2, Y3, Y4, Y5, Y6, Y7), and each electrode is made of a conductive medium such as Indium Tin Oxide (ITO), copper, etc. It is preferably made.

The electrode portion of the touch panel 130 according to the present invention may sense a touch signal by at least one of a self-capacitance method and a mutual-capacitance method. In the self-capacitance method, an electrode corresponding to a basic pixel for touch recognition can perform both the transmission and reception functions, and the mutual capacitance method uses a capacitance between two electrodes so that each electrode is one of transmission and reception. Only the function is performed, and the electrode portion is provided in at least two layers. In this way, the electrode part is touched by a touch input tool such as a user or a pen directly to the touch panel 130, and of course, a proximity touch, that is, the touch input tool does not touch the touch panel 130 and is slightly apart. The sensing signal can also be transmitted to the touch controller 185 through the trace by detecting the state.

Here, the first electrode portion and the second electrode portion may be provided in the first sensing region in a specific pattern to each other, where each electrode portion may be provided in various patterns, but in FIG. 3(a), the electrode of the first electrode portion It is illustrated as an example that the electrodes arranged in the vertical axis and the electrodes of the second electrode part are provided in a pattern of a grid structure arranged in the horizontal axis. 3(b) is a cross-sectional view of the first sensing region. That is, in the first sensing region 138 including the first electrode portion and the second electrode portion, the second electrode portions Y1, Y2, Y3, Y4, Y5, Y6, and Y7 are adjacent to the cover portion 131. It is provided on the layer, and the electrodes of the first electrode parts X1, X2, X3, X4, X5, X6, and X7 may be provided on the second layer in a form intersecting with the second electrode part. Here, an insulating portion 139 is provided between the electrode portions to electrically insulate the electrodes of the first electrode portion and the second electrode portion from each other. On the other hand, in the magnetic capacitor method, the first electrode part and the second electrode part may be selectively provided on one layer, and the insulating part 139 may be provided between each electrode.

The trace includes a first trace portion 135b for connecting the first electrode portion and the touch controller 185, and a second trace portion 135a for connecting the second electrode portion and the touch controller 185, respectively. The trace is provided in the second sensing area 136 described above, and the second sensing area 136 corresponds to a bezel portion of the touch panel 130. Here, ports for connecting the first trace unit 135b and the second trace unit 135a to the touch controller 185 are illustrated as being provided on different sides of the touch panel 130 in FIG. 3(a). It is natural that a port may be designed to be provided on the same side.

Here, when the touch panel 130 is used as a touch screen including a function of the display unit 151 of the mobile terminal 100, the second detection area 136 corresponds to a bezel portion of the mobile terminal 100. Here, the trace may be made of a material having high conductivity, for example, silver or a metal material.

Meanwhile, a magnetic field generating unit 137 may be provided under the touch sensing unit 135. Here, the magnetic field generating unit 137 may include a loop coil for generating a magnetic field, as shown in Figure 2 (b), the bottom of the second detection area 136 is provided with a trace of the touch sensing unit 135 It is preferably provided.

In addition, when the touch panel 130 is provided in a square shape as shown in FIG. 2(a), it is preferable that the roof coil is provided in a square shape such as the shape of the edge region of the touch panel 130, that is, the bezel region. However, the shape of the coil is not limited to this, and may be provided in a separate shape depending on the shape of the touch panel 130 or independently. Meanwhile, an insulating layer is provided between the roof coil and the touch sensing unit 135 to be electrically independent of each other. Here, the insulating layer may include an insulating function as well as a transparent adhesive film containing an adhesive component, including OCA (Optical Clear Adhesive). Although not shown, in addition to the insulating layer, a magnetic field blocking part surrounding the coil and surrounding at least one side of the coil may be selectively provided to prevent leakage of the magnetic field. The magnetic field blocking portion may be made of a material having a high magnetic permeability, for example, ferrite or sendust.

The touch panel 130 may further include a power supply unit 132 and a capacitor 134 as shown in FIG. 8 to generate a magnetic field in the magnetic field generator 137. This will be described in detail later.

4 is a sectional view showing a touch panel 130 according to the present invention. Looking at the cross-sectional view of the touch panel 130, as described above, the cover portion 131 is provided at the top of the touch panel 130, the first detection area 138 and the second detection at the bottom of the cover portion 131 A touch sensing unit 135 including an area 136 may be provided, and a magnetic field generating unit 137 may be provided below the second sensing area 136.

5 is a diagram illustrating a touch panel 130 and a control unit 180 related thereto. The controller 180 according to the present invention may include a touch controller 185 that detects a touch signal input from the touch panel 130 and delivers it to the controller 180. The touch controller 185 is electrically connected to an electrode of the electrode part through a trace, and may determine at least one of a touch position, touch pressure, and touch sensitivity of the touch signal sensed by the electrode part. The touch controller 185 may include a touch screen flexible printed circuit board (FPCB) to determine at least one of a touch position and a touch sensitivity of a touch signal.

The controller 180 may control each component of the mobile terminal 100 to receive a touch result signal through the touch controller 185 and perform an operation corresponding to the received touch result signal. For example, when the touch result signal corresponds to a command signal for executing a specific program of the mobile terminal 100, for example, a music program, the controller 180 can execute the corresponding music program.

6 and 7 are diagrams illustrating a principle in which a touch signal is recognized by the magnetic field generating unit 137 and the electrode unit.

According to an embodiment of the present invention, the coil of the magnetic field generating unit 137 can detect a touch signal like an electrode of the electrode unit, and the touch signal can be sensed by one of the magnetic capacitor method and the mutual capacitor method described above. Can be detected.

6(a) shows an example of a touch signal detection method according to a magnetic capacitor method as an example of an electrode portion. 6(a) and 6(b) show an example in which the first electrode units X0, X1, X2, and X3 and the second electrode units Y0, Y1, Y2, and Y3 are provided.

In the case of the magnetic capacitor method, the total electrodes (X0, X1, X2, X3, Y0, Y1, Y2, Y3) corresponding to the entire column and row are measured to detect the change in the capacitor value of the electrode. That is, when a touch signal is generated by a user's hand or pen or the like in the touch sensing unit 135 formed of a predetermined pattern as shown in FIG. 7, the capacitor value of the electrode corresponding to the location where the touch signal is generated is changed. Since each electrode includes both transmission (Tx) and reception (Rx) functions, the touch detection signals from the first electrode units (X0, X1, X2, X3) and the second electrode units (Y0, Y1, Y2, Y3) The touch sensing in is independent of each other.

In the case of the magnetic capacitor method, when a user multi-touches (X2, Y0) and (X1, Y3), the touch controller 185 determines that electrodes corresponding to X1, X2, Y0, and Y3 are touched. An error that the touch controller 185 recognizes that (X2, Y3) and (X1, Y0) that the user has not touched is touched may occur. Therefore, the multi-touch signal may not be recognized when the magnetic capacitor is used. However, when multiple touches move toward a predetermined direction, the touch controller 185 may recognize a plurality of touch signals and gestures by recognizing the direction of the touch.

In accordance with an embodiment of the present invention, the magnetic field generating unit 137 may include both transmit (Tx) and receive (Rx) functions in a loop coil, such as a magnetic capacitor method. That is, in order to sense the touch signal from the magnetic field generator 137, the touch controller 185 transmits a transmission signal Tx to the loop coil of the magnetic field generator 137 and receives a received signal Rx from the loop coil. can do. Then, when a touch input is performed within a predetermined distance from the loop coil, a magnetic field having a predetermined level is generated in the loop coil, and the touch controller 185 electrically connected to the magnetic field generator 137 is based on the generated magnetic field level. As a result, it may be determined whether touch input is performed within a predetermined distance from the magnetic field generator 137. Here, if the voltage level of the transmission signal Tx input to the loop coil is increased, the level of the magnetic field generated by the loop coil is also increased, so that the touch distance recognized by the touch controller 185 may also be increased.

As described above, the magnetic field generating unit 137 may be provided at the bottom of the second sensing region where the electrode portion does not exist, that is, at the bezel region. In this case, even if a separate electrode unit is not provided in the bezel region, when there is a predetermined touch input in the bezel region, the mobile terminal 100 according to the present invention can recognize this. For example, a bezel of the touch panel 130 is provided on four surfaces of the touch panel 130, that is, a top side, a bottom side, a left side, and a right side, and a magnetic field. When the generation unit 137 is located in the corresponding bezel area, when a touch occurs in any part of the bezel, the touch controller 185 may recognize it. In addition, the touch controller 185 can recognize not only a touch touch to the bezel area but also a proximity touch.

As shown in FIG. 6(b), in the case of the mutual capacitor method, the first electrode units X0, X1, X2, and X3 corresponding to the transfer electrode Tx corresponding to the entire column and row are connected to the corresponding transfer electrode Tx. A change in the capacitor value of the electrode is sensed by the second electrode units Y0, Y1, Y2, and Y3 corresponding to the corresponding receiving electrode Rx. That is, unlike the electrode according to the magnetic capacitor method, in the case of the mutual capacitor method, each electrode corresponds to one of the transmitting (Tx) and receiving (Rx) stages, and each touch signal is a single coordinate such as (X, Y) coordinates. Can be recognized as In other words, in the case of a mutual capacitor method, when a user multi-touches (X2, Y0) and (X1, Y3), the touch controller 185 recognizes X2 as the transmission electrode Tx, and the receiving electrode corresponding to X2 You can detect Y0 with (Rx). In addition, X1 may be recognized as the transmission electrode Tx, and Y3 may be detected as the reception electrode Rx corresponding to X1. Accordingly, when the mutual capacitor method is used, the touch controller 185 can recognize multiple touch signals without error. In addition, when multiple touches move toward a predetermined direction, the touch controller 185 may recognize a direction of the touch, and also recognize a plurality of touch signals and gestures.

In accordance with an embodiment of the present invention, the magnetic field generator 137 may use a loop coil as a transmission electrode Tx, as in the mutual capacitor method, and receive one of a plurality of electrodes provided in the first sensing region (Rx). In this case, since the area capable of sensing the touch signal through the magnetic field generating unit 137 is wide, the touch controller 185 may determine whether to detect the touch signal on the front side of the touch panel 130, and touch touch In addition, proximity touch can be determined. In other words, in the case of the mutual capacitor method, the touch panel 130 includes a high-resolution analog-to-digital converter (ADC), uses a sensor in the first sensing region as a receiving electrode Rx, and uses a loop coil as a transmitting electrode Tx. By using as, the range in which the touch controller 185 can recognize the magnetic field change value through the loop coil may be widened.

As described above, the touch controller 185 may determine whether a touch signal is input to a predetermined region of the bezel through the magnetic field generator 137 provided in the bezel region of the touch panel 130. Accordingly, the touch controller 185 according to the present invention can widen an area capable of sensing a touch signal in the touch panel 130, that is, the mobile terminal 100 by simply adding a loop coil.

8 is a diagram illustrating an example in which the magnetic field generating unit 137 is used as a power supply unit according to another embodiment of the present invention. That is, a simple circuit diagram for generating a magnetic field in the magnetic field generator 137 and a simple circuit diagram of the power receiver 200 for receiving power according to the generated magnetic field.

)을 가지며, 루프 코일(

)은 소정의 캐패시터(

)와 연결된다. 이 루프 코일과 캐패시터는 서로 공진 결합 (Resonance Coupling) 방식에 의해 공진전력을 생성할 수 있으며, 전원공급부(

)에 의해 루프 코일에 전원이 공급될 수 있다. 여기서, 공진 결합 방식에 따르면, 1차 루프코일(

)에 공진 주파수(Resonance Frequency)를 인가하여 발생한 자기장 변화량 중 일부가 동일한 공진 주파수를 갖는 2차 코일(

)에 인가되어 2차 코일(

)에서 유도 기전력이 발생하게 된다. 즉, 이 방식에 따르면, 자기장 생성부의 루프코일(

)은 1차 루프코일에 해당하며, 1차 루프코일(

) 및 2차 코일(

)이 서로 동일한 공진 주파수로 공진하게 되면, 1차 루프코일(

)에서 생성된 전력이 무선으로 2차 코일(

)에 전달되게 된다. 즉, 1차 루프코일(

)을 갖는 터치 패널(130)을 포함하는 이동 단말기(100) 및 2차 코일(

)을 갖는 전력 수신장치(200)가 각각 동일 주파수로 공진하는 경우 서로 전기적으로 직접 연결되어 있지 않아도 전력 수신장치(200)가 이동 단말기(100)로부터 소정 거리 내에 위치하면 전력 수신장치(200)에 전력이 공급될 수 있다.The magnetic field generating unit 137 is a loop coil (

), and the loop coil (

) Is a predetermined capacitor (

). The loop coil and the capacitor can generate resonant power through a resonance coupling method, and the power supply unit (

) Can be powered to the loop coil. Here, according to the resonance coupling method, the primary loop coil (

), a secondary coil with a part of the amount of change in the magnetic field generated by applying a resonance frequency having the same resonance frequency (

) Applied to the secondary coil (

), induced electromotive force is generated. That is, according to this method, the loop coil of the magnetic field generating unit (

) Corresponds to the primary roof coil, and the primary roof coil (

) And secondary coil (

) Are resonated at the same resonant frequency, the primary loop coil (

), the power generated by the wireless secondary coil (

). That is, the primary roof coil (

), the mobile terminal 100 and the secondary coil including the touch panel 130 (

If the power receiving device 200 having a) resonates at the same frequency, the power receiving device 200 is located within a predetermined distance from the mobile terminal 100 even though they are not directly electrically connected to each other. Power can be supplied.

)가 결정된다.In particular, as shown in Equation 1 shown below, according to the resonance coupling method, the power capacity (Capacitance, determined by the distance between the inductance (L) and the capacitance determined by the distance between the loop coils, the length, and the number of revolutions, C) Resonant frequency according to the value (

) Is determined.

Meanwhile, the controller 180 can recognize whether or not there is a predetermined power receiving device 200 within a predetermined range, and when it is determined that the power receiving device 200 is present, supply power to the magnetic field generating unit 137 to It may be controlled to generate a predetermined wireless power and transmit it to the power receiving device 200.

Specifically, when it is recognized that the predetermined power receiving device 200 is within a predetermined range, the controller 180 may request charging related information from the power receiving device 200. Then, the power receiving device 200 may transmit charging-related information, which is information necessary for charging, such as a power remaining state, a voltage of a resonance power required for charging, power, and a resonance frequency, to the mobile terminal 100. The control unit 180 determines whether to transmit wireless power through the magnetic field generation unit 137 based on the received charging-related information, and as a result of the determination, when charging is required, a magnetic field to transmit wireless power having a predetermined resonance frequency The generation unit 137 can be controlled. Meanwhile, while wireless power is being transmitted, the power receiving device 200 detects whether charging is completed, and when it is determined that charging is completed, transmits a charging completion signal indicating that charging is completed to the mobile terminal 100 do. Upon receiving this, the controller 180 may control the magnetic field generator 137 to stop generating and transmitting wireless power.

9 is a diagram illustrating an example that the mobile terminal 100 according to the present invention is a digitizer (Digitiger: 300) and the power receiver 200 is a pen for touch.

)이 포함되어 있으면, 별도의 충전을 위한 소자 및 동작을 하지 않아도, 사용자가 터치 입력을 위하여 터치 펜을 사용하는 동안 터치용 펜이 충전될 수 있다.Secondary coil (

) Is included, the touch pen may be charged while the user uses the touch pen for touch input, without a separate device and operation for charging.

)은 디지타이저의 베젤부분에 마련된다면 터치 인식 유닛(350) 후면부 뿐 아니라 다른 영역에 마련될 수도 있다.Meanwhile, the digitizer 300 may include a motherboard 370 and a rear case 390 including a front case 310, a display 330, a touch recognition unit 350, a controller 180, and the like. Here, the above-described primary loop coil (

) May be provided in the rear area of the touch recognition unit 350 as well as other areas if provided in the bezel portion of the digitizer.

Here, according to an embodiment of the present invention, the display 330 may include an Electronic Paper Display (EPD), and the touch recognition unit 350 may include an Electromagnetic Resonances Touch (ERT),

The loop shape, size, and number of the loop coils included in the magnetic field generator 137 may be determined in consideration of the thickness of the bezel as well as the aforementioned power transmission and sensing sensitivity.

The touch panel according to the present invention includes a touch screen panel including a display role.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention.

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

Claims (16)

A cover portion having a touchable front portion and a rear portion opposite the front portion;
Located at the bottom of the rear portion, a touch sensing unit for detecting a predetermined touch signal; And
Located at the bottom of the edge of the touch sensing unit, and includes a magnetic field generating unit for generating a magnetic field,
The touch sensing unit includes an electrode unit provided in the first sensing region and a trace unit provided in the second sensing region,
The magnetic field generating unit is provided at the bottom of the trace unit,
The second sensing area, the touch panel, characterized in that located outside the first sensing area. delete delete According to claim 1,
The electrode unit includes a first electrode unit including an electrode of the first pattern and a second electrode unit including an electrode of the second pattern,
The trace unit includes a first trace unit connected to the first electrode unit and a second trace unit connected to the second electrode unit. The method of claim 4,
And an insulating portion positioned between the first electrode portion and the second electrode portion. According to claim 1,
A transparent adhesive film including an adhesive component is provided between the cover part and the touch sensing part,
The transparent adhesive film, OCA (Optical Clear Adhesive) touch panel characterized in that it comprises a. delete According to claim 1,
The magnetic field generating unit is provided in a bezel area of the touch panel, and includes a loop coil for generating a magnetic field and a capacitor for generating the magnetic field together with the loop coil. delete delete The method of claim 8,
The magnetic field generating unit generates a resonance power having a predetermined resonance frequency based on the capacitor and the loop coil, and outputs the generated resonance power to an external power receiving device. The method of claim 8,
The magnetic field generating unit generates a magnetic field having a size changed according to at least one of an external touch touch and an external proximity touch. delete delete delete delete

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