KR101581275B1 - Mobile terminal equipped with flexible display and operation method thereof - Google Patents

Mobile terminal equipped with flexible display and operation method thereof Download PDF

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Publication number
KR101581275B1
KR101581275B1 KR1020080109549A KR20080109549A KR101581275B1 KR 101581275 B1 KR101581275 B1 KR 101581275B1 KR 1020080109549 A KR1020080109549 A KR 1020080109549A KR 20080109549 A KR20080109549 A KR 20080109549A KR 101581275 B1 KR101581275 B1 KR 101581275B1
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KR
South Korea
Prior art keywords
display unit
warped
sensor
finger
degree
Prior art date
Application number
KR1020080109549A
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Korean (ko)
Other versions
KR20100050318A (en
Inventor
최길수
김종환
박남용
정광서
정성원
이경주
백대현
김영석
봉병은
서경진
Original Assignee
엘지전자 주식회사
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Priority to KR1020080109549A priority Critical patent/KR101581275B1/en
Publication of KR20100050318A publication Critical patent/KR20100050318A/en
Application granted granted Critical
Publication of KR101581275B1 publication Critical patent/KR101581275B1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/72Substation extension arrangements; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selecting
    • H04M1/725Cordless telephones
    • H04M1/72519Portable communication terminals with improved user interface to control a main telephone operation mode or to indicate the communication status
    • H04M1/72522With means for supporting locally a plurality of applications to increase the functionality
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016Input arrangements with force or tactile feedback as computer generated output to the user
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers; Analogous equipment at exchanges
    • H04M1/02Constructional features of telephone sets
    • H04M1/0202Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026Details of the structure or mounting of specific components
    • H04M1/0266Details of the structure or mounting of specific components for a display module assembly
    • H04M1/0268Details of the structure or mounting of specific components for a display module assembly including a flexible display panel
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2250/00Details of telephonic subscriber devices
    • H04M2250/12Details of telephonic subscriber devices including a sensor for measuring a physical value, e.g. temperature or motion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M2250/00Details of telephonic subscriber devices
    • H04M2250/22Details of telephonic subscriber devices including a touch pad, a touch sensor or a touch detector

Abstract

The present invention relates to a portable terminal and a control method thereof. The portable terminal includes a flexible display portion, at least one sensing sensor outputting a signal corresponding to the warp of the display portion, And a control unit for detecting at least one of the degree of the abnormality. According to the present invention, it is possible to detect a bent region or a direction in the display unit by using various sensors.
Flexible, display unit, portable terminal

Description

Technical Field [0001] The present invention relates to a mobile terminal having a flexible display and a control method thereof,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a portable terminal and a control method thereof, and more particularly, to a portable terminal capable of detecting a bent region or a direction in a flexible display using various sensing sensors and a control method thereof.

A portable terminal is a portable device having one or more functions capable of carrying out voice and video communication, capable of inputting and outputting information, and storing data, while being portable. As the functions of the portable terminal have diversified, they have complicated functions such as photographing and photographing, playing music files and video files, receiving games, receiving broadcasts, and wireless internet, and have developed a comprehensive multimedia player, .

In order to realize a complicated function, a mobile terminal implemented in the form of a multimedia device is being applied variously in terms of hardware and software. For example, there is a user interface environment in which a user can easily and conveniently search for or select a function. In addition, the portable terminal has been developed as a portable terminal to which a double-sided LCD (Liquid Crystal Display), a flexible display, a front touch screen and the like, which are viewed as personal items for expressing the personality of a user, .

By the way, flexible display means a display that is literally a flexible type screen, which may ultimately bend or fold. When such a flexible display is applied to a portable terminal, it may be considered to control the operation of the portable terminal by using the flexibility of folding and unfolding of the flexible display. To this end, there is a need for a method capable of detecting the bent region, the bent direction, and the degree of warp in the flexible display.

Accordingly, it is an object of the present invention to provide a portable terminal and a control method thereof that can detect a bent region, a bent direction, and a degree of warp in a flexible display unit using various sensing sensors.

According to an aspect of the present invention, there is provided a portable terminal including a flexible display unit, at least one sensing sensor outputting a signal corresponding to a warp of the display unit, And a controller for sensing at least one of a bent region, a bent direction, and a warped degree in the display unit.

According to another aspect of the present invention, there is provided a method for controlling a portable terminal, the method comprising: outputting at least one sensing signal corresponding to a warp of a flexible display unit; And at least one of the degree of curvature, and performing a predetermined operation corresponding to at least one of the curved region, the curved direction, and the degree of curvature.

According to an aspect of the present invention, there is provided a computer-readable recording medium having recorded thereon a program for causing a processor to execute the method.

According to the present invention, it is possible to detect a bent region, a bent direction, and a degree of warp in a display unit according to a value output from a detection sensor disposed adjacent to a display unit. Accordingly, various operations can be controlled according to the warp of the display unit or the like in the portable terminal, thereby providing the user with operational convenience.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The portable terminal described in this specification includes a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation. In addition, suffixes "module" and " part "for components used in the following description are given only for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

FIG. 1 is a block diagram of a portable terminal according to an exemplary embodiment of the present invention. Referring to FIG. Referring to FIG. 1, a mobile terminal according to an exemplary embodiment of the present invention will be described in terms of its functional components.

1, the portable terminal 100 includes a wireless communication unit 110, an A / V input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A memory 160, an interface unit 170, a control unit 180, and a power supply unit 190. When such components are implemented in practical applications, two or more components may be combined into one component, or one component may be divided into two or more components as necessary.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short distance communication module 117, and a GPS module 119.

The broadcast receiving module 111 receives at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. At this time, the broadcast channel may include a satellite channel, a terrestrial channel, and the like. The broadcast management server may refer to a server for generating and transmitting at least one of a broadcast signal and broadcast related information and a server for receiving at least one of the generated broadcast signal and broadcast related information and transmitting the broadcast signal to the terminal.

The broadcast-related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal. The broadcast-related information can also be provided through a mobile communication network, in which case it can be received by the mobile communication module 113. Broadcast-related information can exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives a broadcast signal using various broadcasting systems. In particular, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) , Digital Video Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. In addition, the broadcast receiving module 111 may be configured to be suitable for all broadcasting systems that provide broadcasting signals, as well as the digital broadcasting system. 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 113 transmits and receives a radio signal to at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include various types of data according to a voice call signal, a video call signal, or a text / multimedia message transmission / reception.

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 can be embedded in the mobile terminal 100 or externally. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 117 refers to a module for short-range communication. Bluetooth, radio frequency identification (RFID), infrared data association (IrDA), ultra wideband (UWB), ZigBee, and the like can be used as the short distance communication technology.

A GPS (Global Position System) module 119 receives position information from a plurality of GPS satellites.

The A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 123. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. Then, the processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 123 receives an external sound signal by a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 113 and output when the voice data is in the call mode. The microphone 123 may be a variety of noise reduction algorithms for eliminating noise generated in receiving an external sound signal.

The user input unit 130 generates key input data that the user inputs to control the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (static / static), a jog wheel, a jog switch, a finger mouse, and the like. Particularly, when the touch pad has a mutual layer structure with the display unit 151 described later, it can be called a touch screen.

The sensing unit 140 senses the current state of the portable terminal 100 such as the open / close state of the portable terminal 100, the position of the portable terminal 100, Thereby generating a sensing signal. For example, when the portable terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, a sensing function related to whether or not the power supply unit 190 is powered on, whether the interface unit 170 is coupled to an external device, and the like can be handled.

The sensing unit 140 may include a proximity sensor, a pressure sensor, and an acceleration sensor. The proximity sensor makes it possible to detect the presence of an object to be approached or nearby, without mechanical contact. The proximity sensor can detect a nearby object by using the change of the alternating magnetic field or the change of the static magnetic field, or the rate of change of the capacitance. The proximity sensor may be equipped with two or more sensors according to the configuration.

The pressure sensor can detect whether the pressure is applied to the portable terminal 100, the magnitude of the pressure, and the like. The pressure sensor may be installed in a portion of the portable terminal 100 where pressure detection is required depending on the use environment. If the pressure sensor is installed on the display unit 151, a touch input through the display unit 151 and a pressure touch input through which a greater pressure than the touch input is applied, Can be identified. In addition, the magnitude of the pressure applied to the display unit 151 in the pressure-touch input can be determined according to the signal output from the pressure sensor.

An acceleration sensor is a device that converts an acceleration change in one direction into an electric signal and is widely used in conjunction with the development of MEMS (micro-electromechanical systems) technology. The acceleration sensor measures the acceleration of a small value built in the airbag system of an automobile and recognizes the minute motion of the human hand and measures the acceleration of a large value used as an input means such as a game There are various types. Acceleration sensors are usually constructed by mounting two or three axes in one package. Depending on the usage environment, only one axis of Z axis is required. Therefore, when the acceleration sensor in the X-axis direction or the Y-axis direction is used instead of the Z-axis direction for some reason, the acceleration sensor may be mounted on the main substrate by using a separate piece substrate.

The sensing unit 140 may include at least one of a motion sensor, a pressure sensor, a temperature sensor, a tension sensor, a current sensor, a tactile sensor, and a tilt sensor. When the flexible display is used as the display unit 151, A bending direction, and a degree of bending in the display unit 151 can be detected.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display unit 151, an audio output module 153, an alarm unit 155, and a haptic module 157.

The display unit 151 displays and outputs the information processed by the portable terminal 100. For example, when the portable terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the portable terminal 100 is in the video communication mode or the photographing mode, the photographed or received images can be displayed individually or simultaneously, and the UI and the GUI are displayed.

Meanwhile, as described above, when the display unit 151 and the touch pad have a mutual layer structure to constitute a touch screen, the display unit 151 can be used as an input device in addition to the output device. If the display unit 151 is configured as a touch screen, it may include a touch screen panel, a touch screen panel controller, and the like. In this case, the touch screen panel is a transparent panel attached to the outside, and can be connected to the internal bus of the portable terminal 100. The touch screen panel keeps a watch on the contact result, and if there is a touch input, sends the corresponding signals to the touch screen panel controller. The touch screen panel controller processes the signals, and then transmits corresponding data to the controller 180 so that the controller 180 can determine whether the touch input has been made and which area of the touch screen has been touched.

Also, the display unit 151 may be formed of an e-paper. Electronic paper (e-Paper) is a kind of reflective display, and has excellent visual characteristics such as high resolution, wide viewing angle and bright white background as conventional paper and ink. The electronic paper (e-paper) can be implemented on any substrate such as plastic, metal, paper, and the image is retained even after the power is shut off, and the battery life of the portable terminal 100 is long Can be maintained. As the electronic paper, a hemispherical twist ball filled with a telephone can be used, or an electrophoresis method and a microcapsule can be used.

In addition, the display unit 151 may be a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display (3D display). There may be two or more display units 151 according to the implementation mode of the portable terminal 100. [ For example, the portable terminal 100 may include an external display unit (not shown) and an internal display unit (not shown) at the same time.

The audio output module 153 outputs audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, The sound output module 153 outputs sound signals related to functions performed in the portable terminal 100, for example, a call signal reception tone, a message reception tone, and the like. The sound output module 153 may include a speaker, a buzzer, and the like.

The alarm unit 155 outputs a signal for notifying the occurrence of an event of the portable terminal 100. Examples of events occurring in the portable terminal 100 include call signal reception, message reception, and key signal input. The alarm unit 155 outputs a signal for notifying the occurrence of an event in a form other than an audio signal or a video signal. For example, it is possible to output a signal in a vibration mode. The alarm unit 155 can output a signal to notify when a call signal is received or a message is received. Also. When the key signal is inputted, the alarm unit 155 can output a signal as a feedback to the key signal input. The user can recognize the occurrence of an event through the signal output by the alarm unit 155. A signal for notifying the occurrence of an event in the portable terminal 100 may also be output through the display unit 151 or the sound output module 153. [

The haptic module 157 generates various tactile effects that the user can feel. A typical example of the haptic effect generated by the haptic module 157 is a vibration effect. When the haptic module 157 generates vibration with a haptic effect, the intensity and pattern of the vibration generated by the haptic module 157 can be converted, and the different vibrations can be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 157 may be provided with a function of stimulating by a pin arrangement vertically moving with respect to the contact skin surface, an effect of stimulating air through the injection or suction force of the air through the injection port or the suction port, The effect of stimulation through contact of an electrode (eletrode), the effect of stimulation by electrostatic force, and the effect of reproducing a cold sensation using a device capable of endothermic or exothermic can be generated. The haptic module 157 can be implemented not only to transmit the tactile effect through direct contact but also to feel the tactile effect through the muscular sense of the user's finger or arm. The haptic module 157 may include two or more haptic modules 157 according to the configuration of the portable terminal 100.

The memory 160 may store a program for processing and controlling the control unit 180 and may store a function for temporarily storing input or output data (e.g., a phone book, a message, a still image, .

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM , And a ROM. ≪ / RTI > In addition, the portable terminal 100 may operate a web storage for storing the memory 150 on the Internet.

The interface unit 170 serves as an interface for exchanging data with all external devices connected to the mobile terminal 100. [ Examples of the external device connected to the portable terminal 100 include a wired / wireless headset, an external charger, a wired / wireless data port, a memory card, a subscriber identification module (SIM) The same card socket, audio I / O (input / output) terminal, video I / O (input / output) terminal and earphone. The interface unit 170 receives data from the external device or receives power from the external device and transmits the data to each component in the portable terminal 100 so that data in the portable terminal 100 can be transmitted to the external device .

The interface unit 170 is a path through which power from the cradle connected when the portable terminal 100 is connected to the external cradle is supplied to the portable terminal 100 or various command signals inputted from the cradle by the user are carried And may be a passage to be transmitted to the terminal 100.

The controller 180 typically controls the operation of the respective units to control the overall operation of the mobile terminal 100. For example, voice communication, data communication, video communication, and the like. In addition, the control unit 180 may include a multimedia playback module 181 for multimedia playback. The multimedia playback module 181 may be configured in hardware in the controller 180 or separately from software in the controller 180. [

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The mobile terminal 100 having such a configuration can be configured to be operable in a communication system capable of transmitting data through a frame or a packet, including a wired / wireless communication system and a satellite-based communication system. have.

The portable terminal according to the present invention has been described in terms of components according to functions. Hereinafter, with reference to FIG. 2 to FIG. 4, the portable terminal related to the present invention will be described in more detail from the viewpoint of components according to the external form. Hereinafter, for convenience of description, a bar-type portable terminal having a flexible display among various types of portable terminals such as a folder type, a bar type, a swing type, a slider type, etc. will be described as an example. However, the present invention is not limited to a bar-type portable terminal, but can be applied to all types of portable terminals including the above-mentioned type.

2 is a perspective view of a portable terminal according to an embodiment of the present invention. Referring to FIG. 2, the case of the present portable terminal 100 is formed by a front case 100A-1 and a rear case 100A-2. Various electronic components are incorporated in the space formed by the front case 100A-1 and the rear case 100A-2. At least one intermediate case may be additionally disposed between the front case 100A-1 and the rear case 100A-2. Such cases may be formed by injection molding of a synthetic resin, or may be formed of a metal material, for example, a metal material such as stainless steel (STS) or titanium (Ti).

The display unit 151, the first sound output module 153a, the first camera 121a, and the user input unit 130 may be disposed in the main body, specifically, the front case 100A-1.

The display unit 151 is constituted by a flexible display having flexibility to fold or unfold the information visually and the touch pad is overlapped with the layer structure so that the display unit 151 operates as a touch screen, So that information can be input by the user.

The first acoustic output module 153a may be implemented in the form of a receiver or a speaker. The first camera 121a may be implemented to be suitable for capturing an image or a moving image of a user or the like.

The user input unit 130 may be employed in any manner as long as the user operates in a tactile manner with a tactile impression. For example, the user input unit 130 may be embodied as a dome switch or a touch pad capable of receiving a command or information by a push or touch operation of a user, or may be a wheel, a jog type, a joystick, Or the like. From a functional point of view, the user input 130 may be a command input, such as start, end, scroll, or the like. A hot-key for activating a special function in the portable terminal 100, and the like. The microphone (not shown) may be implemented in a form suitable for receiving a user's voice, other sounds, and the like.

The display unit 151 can be bent or folded, as shown in Fig. 3, using a flexible display. The display unit 151 may use a shape retaining type that can maintain the bent state when bent, or a shape return type that returns to the original shape when bent.

4 is a rear perspective view of the portable terminal shown in FIG. Referring to FIG. 3, a second camera 121b may be further mounted on the rear case 100A-2. The second camera 121b has a photographing direction substantially opposite to that of the first camera 121a, and may have pixels different from those of the first camera 121a. For example, the first camera 121a has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and send it to the other party, and the second camera 121b shoots a general object It is preferable to have a high pixel.

A mirror 125 and a flash 125 may be additionally disposed adjacent to the second camera 121b. The mirror 125 enables the user to illuminate the user's own face or the like when the user intends to take a picture of himself / herself (self-photographing) using the second camera 121b. The flash 126 illuminates the subject when the subject is photographed by the second camera 121b.

A second sound output module (not shown) may be further disposed in the rear case 100A-2. The second sound output module may implement the stereo function together with the first sound output module 153a, and may be used for talking in the speakerphone mode.

An antenna (not shown) for receiving broadcast signals may be disposed on one side of the rear case 100A-2 in addition to the antenna for communication. The antenna may be installed to be capable of being drawn out from the rear case 100A-2. A power supply unit (not shown) for supplying power to the portable terminal 100 may be mounted on the rear case 100A-2. The power supply unit is, for example, a rechargeable battery, and can be detachably coupled to the rear case 100A-2 for charging or the like.

In the above description, the second camera 121b and the like are disposed in the rear case 100A-2, but the present invention is not limited thereto. Also, the first camera 121a may be rotatably formed so that the second camera 121b can be photographed up to the photographing direction, even if the second camera 121b is not separately provided.

5A to 5D are views referred to the description of a method of detecting a bent region or the like in a display unit using a motion sensor according to an embodiment of the present invention.

As shown in FIG. 5A, a plurality of motion sensors 300a to 300l capable of measuring acceleration at the time of motion and motion are installed in a boundary area of the flexible display unit 151 or the like. When the display unit 151 is curved, the curved region, the curved direction, the curved strength, and the like in the display unit 151 can be detected by the acceleration difference in each direction of the motion sensors 300a to 300l. .

5B, when one side of the display unit 151 is bent, a change in the acceleration value of the direction and the magnitude indicated by the arrow 311 is detected by the second motion sensor 300b, And the third movement sensors 300a and 300c, a slight change in the acceleration value is detected. In this case, as shown in FIG. 5C, a curved region 315 is detected based on the connection line 313 connecting the first and third motion sensors 300a and 300c having acceleration values of a certain level or less .

Even if a larger area is warped in the display unit 151, as shown in FIG. 5D, a curved region 335 is formed on the basis of the connecting line 333 connecting motion sensors having acceleration values of a certain level or less Can be detected.

In FIG. 5A, for convenience of explanation, only a few sensors are shown as sensing sensors for detecting the warp of the display unit 151. However, depending on the usage environment, more or less sensing sensors may be used And the same applies to the other embodiments described below.

6A to 6D are views referred to the description of a method of detecting a bent region or the like in a display unit using a pressure sensor according to an embodiment of the present invention.

As shown in FIG. 6A, a pressure sensor plate 350 capable of sensing pressure is disposed on the back surface of the display unit 151. 6B, when the pressure sensor 351a capable of sensing the pressure is disposed at regular intervals and the display unit 151 is bent in a specific direction, It is possible to detect the bent region, the bent direction, and the bent strength by using the difference of the pressure to be received.

For example, as shown in FIG. 6C, when the display unit 151 is bent, the pressure sensor plate 350 senses the pressure change in the bent region. At this time, the bent region receives higher pressure than the other regions. That is, as shown in FIG. 6D, when the display portion 151 is bent, the middle portion 353 of the curved region receives the highest pressure. In this way, the area, direction, strength, and the like bent in the display unit 151 can be detected using the change in pressure with respect to the portion 353 as the highest pressure. When a specific corner of the display unit 151 is folded, the bent region, the position, the strength, and the like can be detected using the same method.

7A and 7B are views referred to the description of a method of detecting a bent region or the like in a display unit using a temperature sensor according to an embodiment of the present invention.

As shown in FIG. 7A, a temperature sensor plate 400 is arranged at a predetermined interval on the back surface of the display unit 151 so that temperature can be sensed at each point. When the display unit 151 is bent, it is possible to detect a bent region, a bent direction, a bent strength, and the like in the display unit 151 using a difference in temperature change of the temperature sensors.

At this time, since the bent region is higher in density than the other regions, more heat is received, so that the middle portion 403 of the bent region shows the highest temperature as shown in FIG. 7B. Therefore, the bent portion, the direction, the strength, and the like in the display portion 151 can be detected using the change in temperature with respect to the portion 403 having the highest temperature.

8A to 8D are diagrams for explaining a method of detecting a bent region or the like in a display unit using a tension sensor according to an embodiment of the present invention.

As shown in FIG. 8A, a tension sensor plate 450 is disposed on the back surface of the display unit 151 to sense tension. As shown in Fig. 8B, the tension sensor plate 450 is provided with a tension sensor capable of measuring the tension in the boundary area of the display unit 151, and both tension sensors are connected at regular intervals in the transverse direction . With such a configuration, when the display unit 151 is bent in a specific direction, a bent region, a bent direction, a bent strength, and the like can be detected in the display unit 151 using a change in tension.

When the display portion 151 is bent. The strength of the tension applied to the tension sensor varies depending on the bent region. That is, when the display portion 151 is bent vertically, the lateral force does not apply a tensile force to the sensor. If the display unit 151 is bent sideways, on the contrary, it does not exert a force on the vertical sensor.

As shown in Fig. 8C, when the display portion 151 is warped diagonally, tension is applied to both the horizontal and vertical sensors, and as shown in Fig. 8D, a region 467 receiving a high tension and a low tension Since the receiving area 465 also has a different magnitude of the tension, it is possible to detect a position area or the like bent with respect to the center line 465 of the area 467 receiving the high tension.

9A to 9C are views referred to the description of a method of detecting a bent region or the like in a display unit using a current sensor according to an embodiment of the present invention.

9A, a sensor in the form of a coil is placed along the boundary region of the display unit 151, and the area, direction, and direction of the bent portion of the display unit 151 are changed in accordance with the change in current passing through the coil, Strength and the like can be detected.

For example, as shown in FIG. 9B, when one side of the display portion 151 is bent, the connection line 507 connecting the portions 505 and 503 where the in- The bent region 509 can be detected.

10 is a diagram for explaining a method of detecting a bent region or the like in a display unit using a tactile sensor and a pressure sensor according to an embodiment of the present invention.

10, when a spherical tactile sensor and pressure sensors 550a to 550d are positioned at the corners of the display unit 151 and the user's finger or the like is pressed and bent in a direction to warp the display unit 151, The direction of tilt can be detected by the direction of the tactile and pressure sensed by the tactile sensor and the pressure sensors 550a to 550d.

If one finger is used to bend the display unit 151, the tactile sensor and the pressure sensor can sense the position and pressure of the finger and determine the direction of bending. In order to advance the display unit 151 by using one finger, the back of the tactile sensor and the pressure sensor must be pushed. At this time, when the user touches the back of the display unit 151, Can be detected. In addition, when the display unit 151 is bent using two fingers, the directions of the fingers and the fingers contacting the pressure sensor and the direction of the pressure may be sensed to determine the direction of bending. For example, in the case of bending the screen using two fingers, it is possible to sense the bending direction by whether the pressure sensed by the thumb is high or the pressure sensed by the finger is high when it is predicted that the thumb and the index finger are gripped. In other words, when the user wants to bend forward, the pressure on the index finger pushing the back side is high, and when it is bent backward, the pressure on the thumb pushing the front side is high. The direction of warping can be detected by the difference in pressure.

11A to 11D are views referred to the description of a method of detecting a bent region or the like in a display unit using a tilt sensor according to an embodiment of the present invention.

Referring to FIG. 11A, a tilt sensor plate 600 is disposed on the back surface of the display unit 151 so that tilt sensors capable of detecting the tilt based on the direction of gravity are disposed at regular intervals to detect tilt. With such a configuration, when the display unit 151 is bent, it is possible to detect a bent region, a direction, an intensity, and the like in the display unit 151 by using a change in the tilt value sensed by each tilt sensor. .

As shown in Fig. 11B, since the inclination of the display unit 151 in the forward and backward directions has an opposite slope value at each point, the slope changes 620a, 620b, 620c can recognize the direction of warping. In addition, as shown in FIG. 11D, in order to distinguish the bent or deflected area in the display unit 151, it is possible to detect by connecting points having zero inclination. That is, the bent region 630 can be detected by connecting the points having the slope of 0.

As described above, various sensors can be used to detect a bent region or the like in the display unit. In addition, a sensor capable of measuring the distance between each other, such as an RF sensor or an infrared sensor, may be provided at the corner of the display unit 151 so that a bent region or direction can be detected by a change in distance between the sensors . That is, when the display portion is not warped, each sensor maintains a certain distance, and when the display portion is warped, the warped direction and the degree of warpage can be detected by the changed distance between the sensors.

12A to 12C are views for explaining a process of correcting a touch position according to a bending of a specific area in the display unit.

As shown in FIG. 12A, a touch sensor plate 650 for sensing a touch and a flexible display unit 151 on the back may be combined to constitute a touch flexible display. 12B, since the actual positional difference occurs between the touch sensor plate 650 and the display unit 151, the point A and the point A ', as shown in FIG. 12B, A process is required. In this case, as shown in Fig. 12C, an area 660 where no warpage has occurred, an area where the degree of warpage does not exceed a certain range, and a warpage occurred area 670 , It is possible to correct the touch position using different correction values in the respective areas. At this time, the range of the area where the degree of warp does not exceed the predetermined range may vary depending on the use environment.

13 is a flowchart illustrating a method of controlling a mobile terminal according to an exemplary embodiment of the present invention. 13, when the user bends the display unit 151, a sensing signal corresponding to the bowing is outputted from the sensing sensor disposed on the boundary area or the back surface of the display unit 151 to the display unit 151 (S700 ). The detection sensor may be a motion sensor, a pressure sensor, a temperature sensor, a tension sensor, a current sensor, a tactile sensor, a tilt sensor, an RF sensor, an infrared sensor, or the like. In operation S710, the control unit 180 detects a warped region, a warped direction, a warped degree, and the like in the display unit 151 according to a sensing signal output from the sensing sensor. At this time, the tactile effect corresponding to the bent region, the bent direction, the degree of warp, etc. may be generated in the display unit.

Then, the control unit 180 controls the predetermined operation to be performed corresponding to at least one of the warped region, the warped direction, and the warped degree (S720). At this time, the operation to be performed is set in advance, and may be configured to be set according to a user command or the like. The control unit 180 may also control the operation screen displayed on the display unit 151 in accordance with at least one of the warped region, the warped direction, and the warped degree.

This process is repeatedly performed until another operation mode is selected (S730). In this way, various operations can be controlled in the portable terminal in response to the warp of the display unit 151. [

In addition, the portable terminal and its control method according to the present invention are not limited to the configuration and method of the embodiments described above, but the embodiments may be applied to all or some of the embodiments, Some of which may be selectively combined.

Meanwhile, the present invention can be implemented as a processor-readable code on a processor-readable recording medium such as an MSM (Mobile Station Modem). The processor-readable recording medium includes all kinds of recording apparatuses in which data that can be read by the processor is stored. Examples of the recording medium readable by the processor include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also a carrier wave such as transmission over the Internet. In addition, the processor readable recording medium may be distributed over networked computer systems so that code readable by the processor in a distributed manner can be stored and executed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention.

1 is a block diagram of a portable terminal according to an embodiment of the present invention;

2 and 3 are perspective views of a mobile terminal according to an exemplary embodiment of the present invention,

FIG. 4 is a rear perspective view of the portable terminal shown in FIG. 2,

5A to 5D are diagrams that refer to a description of a method of detecting a bent region or the like in a display unit using a motion sensor according to an embodiment of the present invention,

6A to 6D are views referred to the description of a method of detecting a bent region or the like in a display unit using a pressure sensor according to an embodiment of the present invention,

FIGS. 7A and 7B are views referred to the description of a method of detecting a bent region or the like in a display unit using a temperature sensor according to an embodiment of the present invention;

8A to 8D are views referred to the description of a method of detecting a bent region or the like in a display unit using a tension sensor according to an embodiment of the present invention,

FIGS. 9A to 9C are views referred to the description of a method of detecting a bent region or the like in a display unit using a current sensor according to an embodiment of the present invention;

10 is a view referred to the description of a method of detecting a bent region or the like in a display unit using a tactile sensor and a pressure sensor according to an embodiment of the present invention,

FIGS. 11A to 11D are views referred to the description of a method of detecting a bent region or the like in a display unit using a tilt sensor according to an embodiment of the present invention;

12A to 12C are views for explaining a process of correcting a touch position according to a bending of a specific area in the display unit,

13 is a flowchart illustrating a method of controlling a mobile terminal according to an exemplary embodiment of the present invention.

Description of the Related Art [0002]

110: wireless communication unit 120: A / V input unit

130: user input unit 140: sensing unit

151: display unit 160: memory

170: interface unit 180: control unit

Claims (18)

  1. A touch sensor plate for sensing a touch, and a flexible display unit;
    At least one detection sensor for outputting a signal corresponding to a warp of the display unit; And
    A control unit for sensing at least one of a bent region, a bent direction, and a warped degree in the display unit based on a signal output from the at least one detection sensor;
    Lt; / RTI >
    Wherein,
    When the user bends the display unit using the first finger and the second finger, when the detection sensor detects that the position of the first finger is the front face of the display unit and the position of the second finger is the back face of the display unit The display unit detects a warped direction and a degree of warp based on a difference between the pressure of the first finger and the pressure of the second finger,
    Wherein the touch sensor plate is divided into a plurality of regions according to a degree of bending of the entire area of the touch sensor plate, and the touch sensor plate is touched by using different correction values for the divided regions.
  2. The method according to claim 1,
    Wherein the sensing sensor is at least one of a motion sensor, a pressure sensor, a temperature sensor, a tension sensor, a current sensor, a tactile sensor, a tilt sensor, an RF sensor, and an infrared sensor.
  3. The method according to claim 1,
    Wherein the detection sensor is disposed on a back surface of the display unit.
  4. The method according to claim 1,
    Wherein the detection sensor is disposed in a boundary area of the display unit.
  5. The method according to claim 1,
    Wherein the controller controls to perform a predetermined operation corresponding to at least one of the warped region, the warped direction, and the warped degree.
  6. 6. The method of claim 5,
    Wherein the control unit displays a menu for setting the operation on the display unit.
  7. The method according to claim 1,
    Wherein the control unit controls the operation screen displayed on the display unit in correspondence with at least one of the warped area, the warped direction, and the warped degree.
  8. The method according to claim 1,
    Further comprising a haptic module for generating a tactile effect,
    Wherein the controller controls the haptic module to generate a tactile effect corresponding to at least one of the warped region, the warped direction, and the warped degree.
  9. Outputting at least one sensing signal corresponding to a deflection of the flexible display unit, the sensing sensor plate being coupled to the touch sensor plate;
    Sensing at least one of a warped region, a warped direction, and a warped degree in the display unit based on the at least one sense signal; And
    Performing a predetermined operation corresponding to at least one of the warped region, the warped direction, and the warped degree;
    Lt; / RTI >
    Wherein the step of outputting the sensing signal comprises:
    When the user bends the display unit using the first finger and the second finger, outputs a sensing signal corresponding to the position and pressure of the first finger and the second finger, respectively,
    The step of sensing at least one of the bent region, the warped direction, and the warped degree in the display unit,
    When the position of the first finger is the front face of the display portion and the position of the second finger is the back face of the display portion, based on the difference between the pressure by the first finger and the pressure by the second finger, Direction and the degree of warp are detected,
    The step of performing the predetermined operation may include:
    Wherein the touch sensor plate is divided into a plurality of regions according to a degree of bending of the entire area of the touch sensor plate, and a correction position touched by the touch sensor plate is corrected using different correction values for each of the divided regions.
  10. 10. The method of claim 9,
    Wherein at least one signal corresponding to the warp is outputted from at least one of a motion sensor, a pressure sensor, a temperature sensor, a tension sensor, a current sensor, a tactile sensor, a tilt sensor, an RF sensor, and an infrared sensor Control method.
  11. 10. The method of claim 9,
    Generating a tactile effect corresponding to at least one of the warped region, the warped direction, and the warped degree.
  12. 10. The method of claim 9,
    And displaying an operation screen according to the predetermined operation on the display unit.
  13. The method of claim 9, wherein
    Further comprising the step of setting the predetermined operation based on a user command.
  14. 10. The method of claim 9,
    And controlling an operation screen displayed on the display unit corresponding to at least one of the warped region, the warped direction, and the warped degree.
  15. delete
  16. delete
  17. delete
  18. delete
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