KR20140008845A - Mobile terminal - Google Patents

Abstract

A mobile terminal according to an embodiment of the present invention comprises: a first display unit; a different type of a second display unit from the first display unit; a power supply unit for supplying power to the first and second display units; and a control unit for controlling content to be displayed on any one of the first and second display units, based on the properties of the content, wherein the control unit controls the power supply unit to turn off power supply to a display unit on which content is not displayed and a corresponding touch sensor. Thus, the mobile terminal according to the present invention can operate in various modes using the display units and can maintain a longer battery life by improving power efficiency. [Reference numerals] (110) Wireless communication unit; (111) Broadcast receiving module; (113) Mobile communication module; (115) Wireless Internet module; (117) Local area communication module; (119) GPS module; (120) A/V input unit; (121) Camera; (123) Microphone; (130) User input unit; (140) Sensing unit; (141) Proximity sensor; (143) Pressure sensor; (145) Motion sensor; (150) Output unit; (151) Display unit; (153) Sound output module; (155) Alarming unit; (157) Haptic module; (160) Memory; (170) Interface unit; (180) Control unit; (181) Multimedia playing module; (190) Power supply unit

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a portable terminal and a method of operating the same, and more particularly, to a portable terminal and a method of operating the battery, which can operate in various ways using different kinds of display units and can efficiently manage a battery.

A portable terminal is a portable device that is portable and has one or more functions for making voice and video calls, inputting and outputting information, and storing data. As the functions of the mobile terminals are diversified, they are equipped with complex functions such as taking a picture or a video, playing a music file or a video file, playing a game, receiving a broadcast, wireless Internet, and sending and receiving a message. multimedia player).

In the mobile terminal implemented in the form of such a multimedia device, new attempts have been applied in various ways in terms of hardware and software to implement complex functions. However, since a mobile terminal must consider mobility and portability, there is a limitation in allocating space for a user interface such as a display or a keypad and high power efficiency. Therefore, researches have been made on a user interface that can efficiently use a limited space of a portable terminal and improve overall power efficiency.

Accordingly, an object of the present invention is to provide a mobile terminal and a method of operating the same, which can control various operations using a plurality of display units.

In addition, an object of the present invention is to provide a portable terminal and an operation method thereof which can improve power efficiency by controlling a plurality of display units.

A portable terminal according to an embodiment of the present invention for achieving the above object, a power supply for supplying power to the first display unit, the second display unit different from the first display unit, the first display unit and the second display unit And a control unit for controlling to display the content on one of the first display unit and the second display unit based on the attribute of the supply unit and the content, wherein the control unit includes a display unit on which the content is not displayed and a corresponding touch. The power supply is controlled so that the power supply of the sensor is turned off.

A portable terminal according to an embodiment of the present invention for achieving the above object, a display unit disposed on the first surface, a transparent display unit disposed in front of the display unit, a power supply unit for supplying power to the display unit and the transparent display unit, A control unit for controlling to display the content on one of the display unit and the transparent display unit based on the attribute of the content, wherein the control unit is configured to supply power so that power supply of the display unit on which the content is not displayed is turned off. It is characterized by controlling the supply.

According to the present invention, by using a plurality of display units, it is possible to operate in various modes, improve the power efficiency, it is possible to maintain a long battery life.

1 is an internal block diagram of a portable terminal according to an embodiment of the present invention.
2 is a diagram illustrating the appearance of a portable terminal according to an embodiment of the present invention.
3 is a diagram referred to describe a method of operating a portable terminal according to an embodiment of the present invention together with a screen displayed on a display unit.
4 is an internal block diagram of a portable terminal according to an embodiment of the present invention.
5 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.
6 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.
7 to 14 are diagrams for describing various examples of a method of operating a mobile terminal according to an embodiment of the present invention.
15 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.
16 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.

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

The portable terminal described in the present specification may be used in various applications such as a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), a camera, tablet computers, e-book terminals, and the like.

In addition, suffixes "module" and " part "for the components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves. Accordingly, the terms "module" and "part" may be used interchangeably.

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

Referring to FIG. 1, a mobile terminal according to an embodiment of the present invention will be described in terms of components according to functions.

1, the portable terminal 100 includes a wireless communication unit 110, an audio / video (A / V) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, A controller 160, an interface 170, a controller 180, and a power supply 190. Such components may be configured by combining two or more components into one component, or by dividing one or more components into two or more components as necessary when implemented in an actual application.

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 signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal. The broadcast-related information may 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, and in this case, may be received by the mobile communication module 113. Broadcast-related information can exist in various forms.

The broadcast receiving module 111 receives broadcast signals using various broadcasting systems. In particular, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) ), Digital Video Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. 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 Near Field Communication (NFC) may 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 sensor (static pressure / capacitance), etc. that may receive a command or information by a user's pressing or touch manipulation. In addition, the user input unit 130 may be configured as a jog wheel or a jog method or a joystick that rotates a key, a finger mouse, or the like. In particular, when the touch sensor forms a mutual layer structure with the display unit 151 described later, this may be referred to as 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, it may be responsible for sensing functions related to whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to an external device, and the like.

The sensing unit 140 may include a proximity sensor 141, a pressure sensor 143, a motion sensor 145, and the like. The proximity sensor 141 can detect the presence of an object approaching the portable terminal 100 or an object existing near the portable terminal 100 without mechanical contact. The proximity sensor 141 can detect a nearby object by using a change in the alternating magnetic field or a change in the static magnetic field, or a rate of change in capacitance. The proximity sensor 141 may be equipped with two or more sensors according to the configuration.

The pressure sensor 143 can detect whether the pressure is applied to the portable terminal 100, the magnitude of the pressure, and the like. The pressure sensor 143 may be installed at a portion where the pressure of the portable terminal 100 is required depending on the use environment. When the pressure sensor 143 is installed on the display unit 151, the touch input through the display unit 151 and the pressure applied by the touch input The pressure touch input can be identified. Also, the magnitude of the pressure applied to the display unit 151 at the time of the pressure touch input can be determined according to the signal output from the pressure sensor 143. [

The motion sensor 145 detects the position and movement of the portable terminal 100 using an acceleration sensor, a gyro sensor, or the like. An acceleration sensor that can be used for the motion sensor 145 is a device that converts an acceleration change in one direction into an electric signal and is widely used along 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 gyro sensor is a sensor for measuring the angular velocity, and it can sense the direction of rotation with respect to the reference direction.

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.

On the other hand, when the display unit 151 and the touch sensor for detecting the touch operation are formed in a mutual layer structure of a touch screen, the display unit 151 is an input device capable of inputting information by a user's touch in addition to the output device. May also be used.

The touch sensor may be configured in various forms such as a touch film, a touch pad, and a touch sheet, and may be configured to convert a change in pressure or capacitance at a specific position of the display unit 151 into an electrical input signal. have. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

Meanwhile, when the display unit 151 is configured as a touch screen, the display unit 151 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.

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- (3D display).

On the other hand, some of the display may be configured to be transparent or light transmissive so that the outside can see through. This may be referred to as a transparent display.

Meanwhile, two or more display units 151 may exist according to the implementation form of the mobile terminal 100. The plurality of display units may be spaced apart or integrally disposed on one surface, or may be disposed on different surfaces, respectively. For example, the external display unit (not shown) and the internal display unit (not shown) may be simultaneously provided in the portable terminal 100, or display units may be provided in front and rear surfaces of the portable terminal.

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 the signal as the feedback to the key signal input. The user may recognize the occurrence of an event through the signal output from 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 the electrode (eletrode), the effect of stimulation by the electrostatic force, and the effect of reproducing the cool / warm using the 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 with all external devices connected to the portable 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 SIM (Subscriber Identification Module) card, a UIM An audio input / output (I / O) terminal, a video I / O (input / output) terminal, and an 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 an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

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.

2 is a diagram illustrating an appearance of a mobile terminal according to an embodiment of the present invention, and FIG. 3 is a diagram for describing an operation method of the mobile terminal according to an embodiment of the present invention together with a screen displayed on a display unit. It is a drawing. In more detail, the case in which the mobile terminal 100 includes two display units 151a and 151b on the other side is illustrated.

Meanwhile, according to the exemplary embodiment of the present invention, the two display units 151a and 151b may have different kinds and characteristics, for example, electronic paper and LCD, or low resolution LCD and high resolution LCD. have. Meanwhile, the at least one display unit may be configured as a transparent display.

In addition, the two display units 151a and 151b may be mainly used for using contents for different purposes. For example, the first display unit 151a may mainly display text-based content, and the second display unit 151b may mainly display video-based content. In this case, the first display unit 151a may be referred to as a text display unit, and the second display unit 151b may be referred to as a moving image display unit.

For example, if the user is using the mobile terminal 100 as the text center through the text display unit 151a on the front side, and wants to connect and watch the video, the user may play the video on the rear display unit 151b. . That is, in the case of low quality or text based content, the front display may be used, and in the case of high quality or video based content based on game and video playback, the rear display may be used.

According to the present invention, a display unit having different characteristics may be provided, various display units having different characteristics may be combined, and various operations may be efficiently performed according to the characteristics of each display unit.

On the other hand, although not shown in Figures 2 and 3, the front and / or rear of the portable terminal 100, the sound output module (not shown), the camera (not shown) in the form of a receiver or a speaker, the user's pressing or touch operation The user input unit may be implemented in various ways such as a key or button for receiving a command or information, a dome switch or a touch pad, a wheel for rotating a key, or a method of operating a jog or a joystick. ), Various terminals and the like can be arranged.

4 is an internal block diagram of a portable terminal according to an embodiment of the present invention. In more detail, the drawings are referred to for describing the operations of the plurality of display units 151a and 151b, the power supply unit 190, and the controller 180 in detail. Meanwhile, other components of the mobile terminal described above with reference to FIG. 1 are not shown and description thereof is omitted.

Referring to FIG. 4, the portable terminal 100 according to an exemplary embodiment of the present invention includes a first display unit 151a and a second display unit 151b different from the first display unit 151a. . According to an exemplary embodiment, other display units may be additionally provided in addition to the first and second display units 151a and 151b.

Meanwhile, the first display unit 151a may be formed in a mutual layer structure with a corresponding first touch sensor 411 and may be referred to as a first touch screen 410, and the second display unit 151b may correspond to a corresponding first layer. The second touch screen 420 may be formed in a mutual layer structure with the second touch sensor 421.

Meanwhile, although FIG. 2 illustrates an example in which the separate touch sensors 411 and 412 are combined with the display units 151a and 151b to operate as a touch screen, the present invention is not limited thereto, and the touch sensor may be used as the display unit 151a. The display unit 151a or 151b may be operated as a touch screen.

In addition, the mobile terminal 100 includes a power supply unit 190 for supplying power to the first display unit 151a and the second display unit 151b, and a controller 180 for controlling each component. The power supply unit 190 may receive an external power source or an internal power source under the control of the controller 180 to supply power for operation of each component.

Meanwhile, the controller 180 may include a plurality of functional blocks, and may include a processor 430 for controlling the plurality of functional blocks. The controller 180 may include an on-off controller 440 for controlling the power supply 190 or control an external controller to control the operation of the power supply 190. It may be.

Meanwhile, the controller 180 controls to display the content on one of the first display unit 151a and the second display unit 151b based on the property of the content, and the content is not displayed. The power supply unit 190 may be controlled to turn off the power supply of the display unit and the corresponding touch sensor.

Referring back to the example of FIG. 3, when the property of the content to be reproduced is text-based, the controller 180 mainly displays the content on any one display unit, for example, the first display unit 151a, and displays the second display. By cutting off the power supplied to the unit 151b, power consumption may be reduced. In addition, the controller 180 may also block power supply of the second touch sensor 420 of the second display unit 151b, thereby preventing unnecessary power consumption for touch detection on the display unit that is not in use. have.

On the contrary, when the property of the content is a video-based content such as a movie or a game, the controller 180 plays the content through the second display unit 151b and powers the other display unit 151a and the touch sensor 410. Supply can be cut off.

In addition, the controller 180 may control the power supply to the display unit displaying the content to be turned on when the display unit displaying the content is not in use and is in a power-off state. . That is, the display unit to be used can be controlled to be turned on.

In addition, the controller 180 may convert the displayed screen according to the display unit displaying the content.

The plurality of display units provided according to the present invention have different characteristics with different types of displays. Accordingly, the controller 180 controls the user to use an image optimized for display characteristics by performing image processing such as size adjustment, resolution adjustment, color change, and upside down left and right according to the characteristics of the display unit to be used. can do.

In some embodiments, the first display unit may be disposed on a first surface of the portable terminal, and the second display unit may be disposed on a second surface of the portable terminal. The first and second surfaces may be opposite surfaces of the mobile terminal 100, such as the front and rear surfaces.

On the other hand, the present invention is a combination of a low-power display unit suitable for moving pictures by outputting the screen at a few frame rate level in one second and a display unit capable of outputting a screen suitable for video by outputting the screen at a level of 30 frames or more per second It can be provided by.

For example, the first display unit 151a may be an electronic paper (e-Paper), and the second display unit 151b may be configured as a display different from an electronic paper such as an LCD and an OLED.

Currently, the screen of the portable terminal is gradually increasing, but the capacity of the battery is limited. In particular, the LCD display, which uses a lot of power even when watching e-mail, surfing the web, or reading, is slower than video or game driving, and it has a lot of problems with battery usage. In addition, when the dual display is configured with a display such as an LCD, battery consumption may increase further.

Overcoming this, the battery capacity has been increased to the maximum, but there are problems with the weight and size of the mobile terminal.

In addition, the slow updating screen display device, like the conventional electronic ink screen display device uses a low power, but is not suitable for viewing a video, there is a limit to use in a general portable terminal.

However, since the main functions of the mobile terminal such as web surfing, message exchange, and telephone do not require a high-definition display, a low power display can be used.

An object of the present invention is to mainly use a low-power display for text on the first side of the portable terminal to enable a long time at low power during operation of the portable terminal.

In addition, when watching a video or playing a game on the portable terminal, the display having a high update period of high quality of the second surface can be used to overcome the limitations of the text-oriented low quality and low power display.

The second display unit may include a transparent display panel. That is, the second display unit may be configured as a transparent display. The second display unit may further include a circuit unit (not shown) such as a driving IC for the transparent display panel, and the driving IC may be electrically connected to the controller 180 and controlled by the controller 180.

In this case, the first display unit may be disposed on the first surface of the portable terminal, and the second display unit may be disposed on the front surface of the first display unit.

In some embodiments, the second display unit may be rotatable to a second surface of the portable terminal. In this case, the controller 180 may control to invert the display screen of the content in up, down, left, right, up, down, left and right directions based on the degree of rotation of the second display unit.

In the case of using the transparent display, it will be described later in detail with reference to FIGS. 7 to 16.

5 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.

Referring to FIG. 5, first, the controller 180 determines an attribute of a content (S510).

The attribute of the content may be determined from additional information such as metadata of the content file or estimated based on a file name, file format, URL address, and screen analysis.

The attribute of the content may include at least one of a type of the content, whether the content includes a video, resolution information of the content, and color information (color, brightness, and saturation) of the content.

On the other hand, the controller 180 may determine a mode according to the property of the content (S520) The mode determines the display unit that is more suitable for the content among the plurality of display units based on the property of the content. It may include.

In addition, the controller 180 may determine the display mode in consideration of not only the property of the content but also the arrangement state of the plurality of display units.

The controller 180 displays the content on any one display unit corresponding to the content attribute according to the determined mode (S530).

In addition, the control unit 180 may control to switch to the power-off state by cutting off the power supply of the remaining unused display unit in order to prevent unnecessary power consumption (S540) and corresponding touch sensor in conjunction with the off of the display unit It may be switched to the off state (S550).

6 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.

First, the controller 180 checks whether the video decoder is operated (S610) or whether the graphics engine is used (S620). Here, the graphics engine is a graphics engine provided inside or outside the controller 180 and includes a high performance graphics engine for games or 3D in addition to a general graphics processing unit.

When the video decoder or the graphics engine is not used, the controller 180 determines the corresponding content as text-based or low quality content, and determines whether to use the video display unit (S630).

If the video display unit is not used, that is, the text display unit is used, the screen is displayed immediately (S650).

Otherwise, since the controller 180 is unnecessary, the controller 180 cuts off the power supply of the video display unit and the touch sensor (S641, S642), and supplies power to the text display unit and the touch sensor. Control (S643, S644)

The controller 180 displays a screen on the text display unit which is turned on (S650).

On the other hand, the order of the steps (S641, S642, S643, S644) to cut off the power supply of the video display unit and the touch sensor, and to supply power to the text display unit and the touch sensor can be changed.

On the contrary, when the video decoder or the graphics engine is used, the controller 180 determines the corresponding content as the video or high definition content, and determines whether to use the display unit for text (S660).

When the text display unit is not used, that is, when the video display unit is used, the screen is immediately displayed on the video display unit (S650).

Otherwise, the controller 180 controls to supply power to the video display unit and the touch sensor to be used (S671, S672), and controls to cut off the power supply of the text display unit and the touch sensor (S673, S674)

Thereafter, the controller 180 displays a screen on the displayed video display unit (S650).

Meanwhile, FIG. 6 may be used without determining the priority of two display units. Alternatively, one display unit may be used as a primary display unit performing basic operations, and the other display unit may be used as an auxiliary display unit.

For example, suppose that the front is mainly used as a low-power display for text, and the display having a high refresh rate of high quality at the rear is used when watching a video or playing a game. The controller may switch the display (screen) after detecting the operation of the video decoder or the game graphics engine while using the text display as the main display. In this case, the step of determining whether to use the text display unit (S660) is unnecessary. In the opposite case, it is unnecessary to determine whether to use the video display unit (S630).

7 to 14 are diagrams for describing various examples of a method of operating a mobile terminal according to an embodiment of the present invention.

According to one embodiment of the invention, at least one display unit may be a transparent display, in which case the transparent display unit may be disposed in front of the other display unit.

Referring to FIG. 7, the second display unit 151b includes a transparent display panel, that is, a front surface of the first display unit 151a that is configured as a transparent display and disposed on the first surface of the mobile terminal 100. The second display unit 151b may be disposed in the display unit.

The transparent display panel has a property of transmitting light while displaying a predetermined image on a screen. Accordingly, the user may visually recognize an object located across the transparent display panel.

For example, a user located at one side of the transparent display panel may watch an image displayed on the transparent display panel, and may observe an object located at the other side of the transparent display panel 100.

An inorganic thin film electroluminescent display, an organic light emitting diode (OLED), or the like may be used as the transparent display panel.

They can be driven in a passive matrix manner, and light transmittance can be sufficiently high because no TFT is required. Accordingly, it can be used as a transparent display panel.

Alternatively, even in the case of using TFTs, as in active matrix OLEDs, when the TFTs are manufactured using a transparent material such as a multi-composite oxide semiconductor, it is possible to sufficiently increase the light transmittance.

8 illustrates an example of a cross section of a transparent display panel using an OLED.

Referring to FIG. 8, the transparent display panel included in the transparent display unit 151 may include a first transparent substrate 810, a second transparent substrate 820, and a first transparent substrate 810. The image layer 830 may be disposed between the second transparent substrates 820. The image layer 830 positioned between the first transparent substrate 810 and the second transparent substrate 820 may be referred to as an organic cell.

Here, the first transparent substrate 810 and the second transparent substrate 820 may have a property of transmitting light.

The image layer 830 includes an anode 831, a hole transport layer 832, an emission layer 833, an electron transport layer 834, and a cathode 835. can do.

Here, when a voltage is applied to the cathode 835 and the anode 831, a gray scale current is supplied, and thus electrons generated from the cathode 835 move to the light emitting layer 833 through the electron transport layer 834.

In addition, holes generated from the anode 831 move to the light emitting layer 833 through the hole transport layer 832.

In this case, in the light emitting layer 833, electrons supplied from the electron transport layer 834 and holes supplied from the hole transport layer 832 collide with each other to recombine. Light is generated in the light emitting layer 833 due to the collision of electrons and holes.

The brightness of the light generated in the light emitting layer 833 may be proportional to the magnitude of the gradation current supplied to the anode 831.

In this structure, when light is generated in the light emitting layer 833, light may be emitted toward the first transparent substrate 810, or light may be emitted toward the second transparent substrate 820.

Accordingly, the user may view the image through the first transparent substrate 810, or may view the image through the second transparent substrate 820.

8 illustrates an example of a transparent display panel, and the present invention is not limited to FIG. 8.

An embodiment of the present invention may be configured as an integrated display in which the arrangement of the first display unit 151a and the second display unit 151b that is a transparent display is fixed.

Alternatively, the transparent display unit may be configured to be rotatable up to the second surface of the portable terminal 180 in a structure such as a hinge. Alternatively, the transparent display unit may be rotated 180 degrees to a plane parallel to the first surface.

FIG. 9 illustrates a front side and a rear side of an expandable display rotated so that the transparent display unit 151b is unfolded, and FIG. 10 illustrates a display unit 151a disposed on a first side of the mobile terminal 100 and a second side on the second side. The front and rear sides of the double-sided display on which the transparent display unit 151 is disposed are illustrated.

In the structure illustrated in FIG. 7, when the transparent display unit 151b is configured to be rotatable to the second surface of the portable terminal 180, all three arrangement modes of FIGS. 7, 9, and 10 may be used. have. Alternatively, when it is rotatable 180 degrees in the mode of FIG. 7, two layout modes of FIGS. 7 and 9 may be used. Alternatively, the transparent display unit 151b may be rotated to an arbitrary angle between a minimum and maximum rotation state.

In addition, the mobile terminal according to the embodiment of the present invention may use the arrangement of FIG. 10 as a basic arrangement mode and rotate in a direction opposite to the above-described order.

The controller 180 may control the display screen of the content to be inverted in the up, down, left, right, up, down, left, or right directions based on the degree of rotation of the transparent display unit 151b.

11 to 13 may correspond to the arrangement states of FIGS. 7, 9, and 10, respectively, and arrows indicate the direction in which the user sees and the gaze-up surface.

11 to 13, a portable terminal according to an embodiment of the present invention includes a (first) display unit 151a disposed on a first surface and a transparent (second) display unit disposed on a front surface of the display unit. 151b, a power supply unit 190 for supplying power to the display unit and the transparent display unit, and to display the content on one of the display unit and the transparent display unit based on an attribute of the content. The controller 180 may include a controlling unit 180, and the controller 180 may control the power supply unit to turn off the power supply of the display unit in which the content is not displayed.

In this case, the controller 180 may control to turn off the touch sensor corresponding to the display unit in which the power supply is turned off. In addition, the controller 180 may control the power supply of the display unit displaying the contents to be turned on.

The display unit 151a may be an e-paper that consumes low power. Electronic paper (e-Paper) has a wide viewing angle, bright white background and excellent visual characteristics, and can maintain the displayed image even after the power is cut off. In addition, electronic paper is cheaper to produce than other displays, and does not require backlighting or continuous recharging, so it can be driven with very little energy, resulting in high power efficiency.

On the other hand, the portable terminal according to an embodiment of the present invention has a structure such as a hinge 1110, the transparent display unit 151b can be rotated to a predetermined position, for example, the second surface of the portable terminal 180. Can be configured to

In this case, the controller 180 may control to invert the display screen of the content in the vertical direction, the left, the right, the top, the bottom, the left and the right, based on the degree of rotation of the transparent display unit 151b.

For example, when the transparent display unit 151b is rotated from the layout mode of FIG. 11 to the layout mode of FIG. 12, if the user's main viewing surface remains unchanged, the user may view an image in which the top, bottom, left, and right sides are reversed. can see. Accordingly, the controller 180 may invert and display the display screen of the content in up, down, left, and right directions.

FIG. 14 illustrates a screen inversion unit 1410 that controls the display screen of the content to be inverted in up, down, left, right, up, down, left and right directions based on the degree of rotation of the transparent display unit 151b in the internal block diagram illustrated in FIG. 4. Added embodiment is shown.

The controller 180 may control the power supply by controlling the power supply unit 190 and perform image processing such as screen inversion.

Alternatively, the controller 180 may include a plurality of functional blocks and may include a processor 430 for controlling the plurality of functional blocks. In this case, the controller 180 includes an on-off controller 440 for controlling the power supply 190 and / or a screen inverting unit 1410 for inverting the screen. You may.

15 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.

Referring to FIG. 15, when a predetermined image is displayed on the second display unit 151b, the controller 180 may determine the arrangement mode of the second display unit 151b described with reference to FIGS. 11 to 13. (S1510)

In addition, the arrangement mode may also consider rotation of the body of the mobile terminal 100. According to a value output from the motion sensor 145, the controller 180 may determine whether the main body is rotated and the arrangement state.

The controller 180 may determine the top, bottom, left, and right sides of the screen based on the determined arrangement mode, and if necessary, switch the screen (S1520) and display the screen on the second display unit 151b (S1530).

16 is a flowchart illustrating a method of operating a portable terminal according to an embodiment of the present invention.

Referring to FIG. 16, in the method of operating a mobile terminal according to an embodiment of the present disclosure, an attribute of a content may be determined (S1610), and a display mode of which display unit is used according to the attribute of the content may be determined. That is, it may be determined as the display mode using the display unit corresponding to the content attribute.

Meanwhile, the controller 180 determines the arrangement state of the plurality of display units, in particular, the arrangement state of the second display unit and the position of the user (S1630).

The location of the user is a major factor in determining the user's view of the mobile terminal 100, that is, the viewing and hearing surface. Therefore, by determining the user's location with a camera or a sensor, it is possible to determine whether the user has changed the location in the current view.

On the other hand, grasp the user's watch screen (S1640) and if the user can view the image without changing the display screen up, down, left, right, up, down, left and right, and displays the screen as it is (S1650).

Otherwise, the controller 180 inverts the screen in up, down, left, right, up, down, left, and right directions (S1660) and displays the screen on the second display unit 151b.

In this case, in order to prevent unnecessary power consumption, the controller 180 may control to switch to the power-off state by cutting off the power supply of the remaining unused display unit, and corresponding touch sensor in conjunction with the off of the display unit. Can also be turned off.

According to the present invention, by using a plurality of display units, it is possible to operate in various modes, improve the power efficiency, it is possible to maintain a long battery life.

The portable terminal according to the present invention and its operation method are not limited to the configuration and method of the embodiments described above but the embodiments can be applied to all or a part of each embodiment Or may be selectively combined.

On the other hand, the operating method of the portable terminal of the present invention can be implemented as a processor-readable code in a processor-readable recording medium provided in the portable terminal. 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 that can be read 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 may also be implemented in the form of a carrier wave such as transmission over the Internet . In addition, the processor-readable recording medium may be distributed over network-connected computer systems so that code readable by the processor in a distributed fashion 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 detail may be made therein without departing from the spirit and scope of the present invention.

Claims (18)

A first display unit;
A second display unit different from the first display unit;
A power supply unit supplying power to the first display unit and the second display unit;
And a controller configured to display the content on one of the first display unit and the second display unit, based on an attribute of the content.
The controller may control the power supply unit to turn off the power supply of the display unit and the corresponding touch sensor on which the content is not displayed. The method of claim 1,
The first display unit is a portable terminal, characterized in that the electronic paper (e-Paper). The method of claim 1,
The attribute of the content may include at least one of a type of the content, whether the content includes a video, resolution information of the content, and color information of the content. The method of claim 1,
The first display unit is disposed on a first surface of the portable terminal,
And the second display unit is disposed on a second surface of the portable terminal. The method of claim 1,
And the controller controls the power supply of the display unit displaying the contents to be turned on. The method of claim 1,
And the control unit changes the displayed screen according to the display unit displaying the contents. The method of claim 1,
And the second display unit comprises a transparent display panel. The method of claim 7, wherein
The first display unit is disposed on a first surface of the portable terminal,
And the second display unit is disposed in front of the first display unit. 9. The method of claim 8,
And the second display unit is rotatable up to a second surface of the portable terminal. 10. The method of claim 9,
And the control unit inverts the display screen of the content in up, down, left, right, up, down, left and right directions based on the degree of rotation of the second display unit. A display unit disposed on the first surface;
A transparent display unit disposed in front of the display unit;
A power supply unit supplying power to the display unit and the transparent display unit;
And a controller configured to display the content on one of the display unit and the transparent display unit, based on an attribute of the content.
And the controller controls the power supply unit to turn off the power supply of the display unit on which the contents are not displayed. 12. The method of claim 11,
The controller may be configured to control to turn off the touch sensor corresponding to the display unit in which the power supply is turned off. 12. The method of claim 11,
The display unit is a portable terminal, characterized in that the electronic paper (e-Paper). 12. The method of claim 11,
The attribute of the content may include at least one of a type of the content, whether the content includes a video, resolution information of the content, and color information of the content. 12. The method of claim 11,
And the controller controls the power supply of the display unit displaying the contents to be turned on. 12. The method of claim 11,
And the transparent display unit is rotatable up to a second surface of the portable terminal. 17. The method of claim 16,
And the controller controls the display screen of the contents to be inverted in a vertical direction, left, right, up, down, left and right directions based on the degree of rotation of the transparent display unit. 12. The method of claim 11,
The control unit comprises a on-off controller for controlling the power supply unit.

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