KR101857653B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal capable of saving power consumption consumed in a display unit or a display unit of a mobile terminal, and capable of obtaining both high resolution and readability of output data displayed on a display unit .

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal, and more particularly, to a mobile terminal capable of saving power consumption consumed in a display unit or a display unit of a mobile terminal, and capable of obtaining both high resolution and readability of output data displayed on a display unit .

The terminal can move And may be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

In recent years, high resolution is required for outputting output data for chromatic colors such as moving pictures in the field of display of mobile terminals, and high readability is required for outputting achromatic colors such as electronic books or output data for texts.

For this, a conventional mobile terminal uses a panel such as an OLED or an LCD for high resolution. However, since a panel such as an OLED or an LCD requires a self-emission or a backlight unit, when the amount of sunshine is large, There is a problem that the data can not be seen easily, and at the same time, power consumption is very high when the display unit is driven, shortening the charging cycle of the mobile terminal. On the other hand, in order to improve the readability of the output data displayed on the display unit, the conventional electronic book terminal has used the electronic ink panel, but the electronic ink panel is difficult to implement the moving picture, .

Therefore, there is a need for a mobile terminal having a high resolution when outputting output data for chromatic colors such as moving images, and at the same time having achromatic color of an electronic book or the like and high readability at the time of outputting output data to text come.

SUMMARY OF THE INVENTION An object of the present invention is to provide a mobile terminal capable of solving the conventional problems.

Specifically, it is an object of the present invention to provide a mobile terminal which can save power consumption of a display unit of a mobile terminal.

It is still another object of the present invention to provide a mobile terminal capable of displaying high-resolution output data while saving power consumption of a display unit of a mobile terminal.

It is still another object of the present invention to provide a mobile terminal capable of displaying high-resolution output data on a display unit and improving readability of a text displayed on a display unit.

According to an aspect of the present invention, there is provided a mobile terminal including a first display unit for emitting R light, G light, and B light, and a second display unit disposed below the first display unit, A display unit including a second display unit for emitting W light representing the W light; And a control unit for controlling the display unit such that at least one of the first display unit and the second display unit operates based on at least one of an external light amount, a battery discharge rate, and an attribute of an application to be.

The present invention has the effect of saving the power consumption of the display unit of the mobile terminal. Therefore, the present invention can extend the charging period of the mobile terminal, thereby enhancing convenience for the user. Further, the present invention has the effect of saving power consumption of a display unit of a mobile terminal and simultaneously displaying high-resolution output data. In addition, the present invention has the effect of improving the readability of the text displayed on the display unit while simultaneously displaying high-resolution output data on the display unit. Accordingly, the present invention has the effect of significantly reducing the visual fatigue of the user even if the user reads the text for a long time through the display unit of the mobile terminal.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2A is a front perspective view of a mobile terminal according to an embodiment of the present invention.
2B is a rear perspective view of a mobile terminal according to an embodiment of the present invention.
3 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention.
4 is a schematic exploded side view of a mobile terminal according to an embodiment of the present invention.
5 is a schematic cross-sectional view of a display portion of a mobile terminal according to an embodiment of the present invention.
6A to 6C schematically illustrate the first mode to the third mode of the display unit of the mobile terminal according to an embodiment of the present invention.
7A to 7D are schematic views of a control method of the display unit according to the first embodiment of the present invention.
8A to 8D are schematic views of a control method of a display unit according to a second embodiment of the present invention.
9A to 9C are schematic views of a control method of the display unit according to the third embodiment of the present invention.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for the components used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

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

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in FIG. 1 are not essential, and a mobile terminal having more or fewer components may be implemented.

Hereinafter, the components will be described in order.

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

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

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. 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 refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

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

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

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

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

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. 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 114 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 a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 1, an 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 122. The camera 121 processes an image frame such as a still image or moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 200. [ To be precise, the image frame is displayed on the screen of the display unit.

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. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through 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 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static / static), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence or absence of user contact, the orientation of the mobile terminal, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. Meanwhile, the sensing unit 140 may include a proximity sensor 141. In addition, the sensing unit 140 may include an illuminance sensor for sensing an amount of light outside the mobile terminal.

The output unit 150 is for generating output related to visual, auditory or tactile sense and includes a display unit 200, an acoustic output module 152, an alarm unit 153, and a haptic module 154 .

The display unit 200 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 200 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED) display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and the like. The rear structure of the display unit 200 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 200 of the terminal body.

Further, the display portion may include both the OLED panel and the electronic ink panel. Here, the OLED panel is a first display unit, and the electronic ink panel is a second display unit disposed below the OLED panel. As described above, the display unit including the first display unit and the second display unit will be described in detail with reference to the drawings.

There may be two or more display units 200 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, the plurality of display units 200 may be spaced apart from one another or may be disposed integrally with one another, or may be disposed on different surfaces.

When the display unit 200 and the sensor for sensing the touch operation (hereinafter, referred to as 'touch sensor') have a mutual layer structure (hereinafter referred to as 'touch screen'), It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 200 or a capacitance generated in a specific portion of the display unit 200 into an electrical input signal. 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.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. Thus, the control unit 180 can know which area of the display unit 200 is touched or the like.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded by the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

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

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events that occur in the mobile terminal include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 200 or the audio output module 152 so that the video signal or the audio signal may be classified as a part of the alarm unit 153.

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

In addition to the vibration, the haptic module 154 may include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

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 (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

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

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

When the mobile terminal 100 is connected to an external cradle, the interface unit may be a path through which power from the cradle is supplied to the mobile terminal 100, or various command signals input by the user to the cradle may be transmitted It can be a passage to be transmitted to the terminal. The various command signals or the power source input from the cradle may be operated as a signal for recognizing that the mobile terminal is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

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 various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, May be implemented by the control unit 180.

According to a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that perform at least one function or operation. The software code may be implemented by a software application written in a suitable programming language. The software codes are stored in the memory 160 and can be executed by the control unit 180. [

2A is a perspective view of an example of a mobile terminal or a mobile terminal according to the present invention.

The disclosed mobile terminal 100 has a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 101 and a rear case 102. [ A variety of electronic components are embedded in the space formed between the front case 101 and the rear case 102. At least one intermediate case may be additionally disposed between the front case 101 and the rear case 102. [

The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The front body 101 mainly includes a display unit 200, an audio output unit 152, a camera 121, user inputs 130/131 and 132, a microphone 122, an interface 170, an illuminance sensor 142 ) May be disposed.

The display unit 200 occupies most of the main surface of the front case 101. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 200 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 101 and the rear case 102. [

The user input unit 130 is operated to receive a command for controlling the operation of the portable terminal 100 and may include a plurality of operation units 131 and 132. The operation units 131 and 132 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

The contents inputted by the first or second operation unit 131 or 132 may be variously set. For example, the first operation unit 131 receives commands such as start, end, scroll, and the like, and the second operation unit 132 controls the size of the sound output from the sound output unit 152, To the touch recognition mode of the touch screen.

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

Referring to FIG. 2B, a camera 121 'may be further mounted on the rear surface of the terminal body, that is, the rear case 102. The camera 121 'may have a photographing direction substantially opposite to the camera 121 (see FIG. 2A), and may be a camera having different pixels from the camera 121.

For example, the camera 121 may have a low pixel so that the face of the user can be photographed and transmitted to the other party in case of a video call or the like, and the camera 121 ' It is preferable to have a large number of pixels. The cameras 121 and 121 'may be installed in the terminal body so as to be rotatable or pop-upable.

A flash 123 and a mirror 124 are additionally disposed adjacent to the camera 121 '. The flash 123 illuminates the subject when the subject is photographed by the camera 121 '. The mirror 124 allows the user to illuminate the user's own face or the like when the user intends to shoot himself / herself (self-photographing) using the camera 121 '.

An acoustic output 152 'may be additionally disposed on the rear surface of the terminal body. The sound output unit 152 'may implement the stereo function together with the sound output unit 152 (see FIG. 2A), and may be used for the implementation of the speakerphone mode during a call.

In addition to the antenna for a call or the like, a broadcast signal reception antenna 124 may be additionally disposed on the side of the terminal body. The antenna 124 constituting a part of the broadcast receiving module 111 (see FIG. 1) may be installed to be able to be drawn out from the terminal body.

A power supply unit 190 for supplying power to the portable terminal 100 is mounted on the terminal body. The power supply unit 190 may be built in the terminal body or may be detachable from the outside of the terminal body.

The rear case 102 may further include a touch pad 135 for sensing a touch. The touch pad 135 may also be of a light transmission type like the display unit 200. In this case, if the display unit 200 is configured to output time information on both sides, the time information can be recognized through the touch pad 135 as well. The information output on both sides may be all controlled by the touch pad 135. [ Alternatively, a display may be additionally mounted on the touch pad 135, and a touch screen may be disposed on the rear case 102 as well.

The touch pad 135 operates in correlation with the display portion 200 of the front case 101. The touch pad 135 may be disposed parallel to the rear of the display unit 200. The touch pad 135 may have a size equal to or smaller than that of the display unit 200.

For convenience of explanation, it is assumed that the mobile terminal 100 mentioned below includes at least one of the components shown in FIG. In particular, the mobile terminal to which the present invention can be applied includes a display unit 200 and a control unit 180 for controlling the display unit 200.

3 is a schematic block diagram of a mobile terminal according to an embodiment of the present invention.

3, the mobile terminal according to the present invention includes an input unit 130 for receiving an input signal of a user, an illuminance sensor 142 for sensing an external light amount, a power supply unit for supplying power to the mobile terminal A first display unit 210 that emits R light, G light, and B light to display a chromatic color at high resolution, a first display unit 210 disposed below the first display unit 210, A second display unit 260 for displaying white W and a controller 180 for controlling the first display unit 210 and the second display unit 260.

The control unit 180 may control the input signal of the user through the input unit 130 such as a property of a selected application or a selected application, a discharge rate of the battery 190, The display unit 200 may be configured to operate at least one of the first display unit 210 and the second display unit 260 based on at least one piece of information, The first display unit 210 and the second display unit 260 may be controlled.

The control method of the first display unit 210 and the second display unit 260 of the controller 180 will be described in detail with reference to the drawings.

4 is a schematic exploded side view of a display unit 200 of a mobile terminal according to an embodiment of the present invention.

4, a display unit 200 of a mobile terminal according to the present invention includes a first display unit 210 disposed on an upper surface thereof, a second display unit 210 disposed on a lower surface of the first display unit 210, The first display unit 210 and the second display unit 260 are connected to each other in an electrical and data communication manner and the first display unit 210 and the second display unit 260 are controlled And a lower frame 270 supporting the first display unit 210, the second display unit 260, and the PCB 250. The PCB 250 is mounted on the PCB 180,

The first display unit 210 includes an OLED panel. Since the first display unit 210 includes the OLED panel, the first display unit 210 emits R light (red light), G light (green light), and B light (blue light) Can be displayed in high resolution. The first display unit 210 is composed of a light-transmitting material as a whole.

The second display unit 260 includes an electronic ink panel and is disposed below the first display unit 210. The second display portion 260 may be connected to the first display portion 210 by a light-transmissive resin. Since the second display unit 260 includes the electronic ink panel including the electronic ink layer 262, the second display unit 260 can display black (D) (or black) and white (W).

Even if the first display unit 210 is formed of a light transmissive material, the refractive index may be one or more. Therefore, when the second display unit 260 displays black (D) and white (W) And the output data displayed on the screen of the display unit 200 through the first display may have a phase difference. Therefore, when the second display unit 260 is operated, the first display unit 210 and the second display unit 260 generate the second It is preferable that the phase compensation layer 230 compensates for the phase difference of the output data of the display unit 260.

The control unit 180 may be mounted on the PCB 250 and may be connected to the first display unit 210 and the second display unit 260 through the PCB 250 in an electrical and data communication manner, The control unit 180 controls the first display unit 210 and the second display unit 260 to operate the at least one display unit 200 of the first display unit 210 and the second display unit 260, Can be controlled.

5 is a schematic cross-sectional view of a display unit 200 of a mobile terminal according to an embodiment of the present invention.

As described above, the display unit 200 of the mobile terminal according to the present invention includes a first display unit 210 composed of an OLED panel and emitting R light, G light, and B light, A second display unit 260 disposed below the first display unit 200 and the second display unit 260 and displaying black D and white W; And a PCB 250 to which the control unit 180 is connected.

5, the first display unit 210 includes a first substrate 211 disposed on the uppermost portion of the display unit 200 and formed of a light-transmitting material, A first electrode 212 disposed on the first electrode 212 and provided with holes in the organic layer 213 and formed of a light transmitting material and a second electrode 212 disposed below the first electrode 212 to provide electrons to the organic layer 213, An organic layer 213 disposed between the first electrode 212 and the second electrode 214 and provided with electrons and holes and coupled to the first electrode 212 and the second electrode 214, And a second substrate 215 made of a light-transmitting material.

The first display unit 210 and the second electrode 214 of the first display unit 210 are connected to the PCB 250 in an electrically and data communication manner. ). ≪ / RTI >

The organic material layer 213 includes an organic compound. The holes provided in the first electrode 212 and the electrons provided in the second electrode 214 are combined in the organic compound to flow an electric current to the organic compound to emit light, And is emitted as R light, G light, and B light depending on the kind of the organic compound.

Since the organic compound contained in the organic material layer 213 is sensitive to the external environment, the organic material layer 213 is formed on the first electrode 212 and the second electrode 214 together with the first electrode 212 and the second electrode 214, And is sealed by the sealing portion 216 provided on the rim of the substrate 211 and the second substrate 215.

The first display unit 210 includes a first electrode 212 and a second electrode 214 for each pixel and includes B light and G light for each pixel, , And R light, respectively, so that images and moving images having high resolution and high color reproducibility can be output.

5, the second display unit 260 includes a third electrode 261 disposed under the first display unit 210, a second electrode 261 disposed under the third electrode 261, An electronic ink layer 262 including an ink capsule 263 containing a chargeable white material 263a and a chargeable white material 263b and a fourth electrode 264 disposed below the electronic ink layer 262. [

The third electrode 261 and the fourth electrode 264 electrophoretically transfer the chargeable black material 263a and the chargeable white material 263b included in the electronic ink layer 262 to the display unit 200 So that output data or text for an achromatic color is displayed. The third electrode 261 and the fourth electrode 264 may be connected to the PCB 250 in the same manner as the first electrode 212 and the second electrode 214 and may be controlled through the control unit 180 .

 The electronic ink layer 262 includes a large number of ink capsules 263 in which a chargeable black material 263a having a negative charge and a chargeable white material 263b having a positive charge are injected into the ink capsule 263 .

5, when positive electricity is applied to the fourth electrode 264, the chargeable black material 263a is electrophoresed toward the fourth electrode 264 and the chargeable white material 263b is electrophoretically transferred to the third electrode 264, The white display W is displayed on the screen of the display unit 200 while the first display unit 210 is not operated. Conversely, when minus electricity is applied to the fourth electrode 264, the chargeable white material 263b is electrophoretically moved toward the fourth electrode 264 and the chargeable black material 263a is electrophoretically transferred toward the third electrode 261, A black (D) is displayed on the screen of the display unit 200 while the first display unit 210 is not operated.

Since the second display unit 260 maintains the screen even when electricity is not supplied after the chargeable black material 263a or the chargeable white material 263b moves once, the battery 190 is almost completely discharged (D) or white (W) instead of emitting light by using a separate light source. Therefore, it can be recognized through reflection of light like ordinary paper, It is easy to view because it uses light reflection even when the amount of external light is large and the amount of fatigue is small.

The present invention can reduce the power consumption in the display unit 200 and improve the readability in the display unit 200 by having the second display unit 260 described above, And it is possible to provide viewing comfort even when the amount of external light is large.

6A to 6C schematically illustrate the first mode to the third mode of the display unit 200 of the mobile terminal according to an embodiment of the present invention. 6A shows a first mode of the display unit 200, FIG. 6B shows a second mode of the display unit 200, and FIG. 6C shows a third mode of the display unit 200. Referring to FIG.

6A to 6C, the controller 180 may control the first display unit 210 and the second display unit 260 to operate in one of a first mode, a second mode, and a third mode, Mode can be controlled.

6A, in the first mode, only the first display unit 210 is operated so that only the output data displayed by the first display unit 210 is displayed on the screen of the display unit 200 by the controller 180 .

In the first mode, electrons and holes supplied from the first electrode 212 and the second electrode 214 of the first display unit 210 are combined with each other in the organic material layer 213, And R light, G light, and B light are transmitted through the first electrode 212 and the first substrate 211, which are made of a light-transmitting material, to display output data on the screen of the display unit 200 do. In order to prevent the light emitted from the organic layer 213 from being reflected by the second display unit 260, the controller 180 controls the second display unit 260, It is preferable to control the second display unit 260 so that the chargeable black material 263a included in the electronic ink layer 262 of the unit 260 is electrophoresed toward the third electrode 261. [ That is, the second display unit 260 displays black (D) on the third electrode 261 side.

6B, in the second mode, only the second display unit 260 is operated so that only the output data displayed by the second display unit 260 is displayed on the screen of the display unit 200 by the control unit 180 .

In the second mode, the controller 180 controls the first display unit 210 so that no electricity is supplied to the electrodes of the first display unit 210, so that the first display unit 210 is not operated, The portion 210 becomes the same state as the transparent substrate. At this time, the controller 180 controls the second display unit 260 to supply the positive or negative electricity to the third electrode 261 and / or the fourth electrode 264 of the second display unit 260, The chargeable black material 263a and the chargeable white material 263b included in the electronic ink layer 262 of the second display portion 260 control the second display portion 260 to display the output data. The output data indicated by the chargeable black material 263a and the chargeable white material 263b are transmitted through a third electrode 261 made of a light-transmitting material and a first display unit 210, which is a transparent substrate, ). Output data indicated by the chargeable black material 263a and the chargeable white material 263b are reflected by the chargeable black material 263a and the chargeable white material 263b and recognized by the user.

6C, the third mode is a mode in which the control unit 180 displays the output data displayed by the first display unit 210 and the output data displayed by the second display unit 260 on the screen of the display unit 200, The first display unit 210 and the second display unit 260 are simultaneously operated.

In the third mode, the controller 180 controls the electrons and holes supplied from the first electrode 212 and the second electrode 214, which are provided in a part of the first display unit 210, The organic light emitting layer 213 emits R light, G light, and B light. The R light, G light, and B light pass through the first electrode 212 and the first substrate 211, which are made of a light- And controls the partial area of the first display unit 210 to display the output data in a part of the screen of the display unit 200. [ At this time, the control unit 180 determines that a portion of the second display unit 260 provided below the first display unit 210 is located in a portion of the second display unit 260 And controls the area of a part of the second display portion 260 so that the chargeable black material 263a included in the ink layer 262 is electrophoretically moved toward the third electrode 261. [

At the same time, the controller 180 controls the third electrode 261 and / or the fourth electrode 264 (not shown) of the remaining portion of the second display portion 260 (i.e., a region other than a partial region of the second display portion 260) The chargeable black material 263a contained in the electronic ink layer 262 of the remaining region of the second display portion 260 is controlled by controlling the remaining region of the second display portion 260 so as to supply positive or negative electricity to the second display portion 260. [ And the chargeable white material 263b display the output data. The control unit 180 controls the first display unit 210 so that electricity is not supplied to the remaining areas of the first display unit 210 (i.e., areas other than a partial area of the first display unit 210) The remaining area of the first display unit 210 is not operated and the remaining area of the first display unit 210 is in the same state as the transparent substrate.

7A to 7D are schematic views of a control method of the display unit 200 according to the first embodiment of the present invention.

According to the control method of the display unit 200 according to the first embodiment of the present invention, the controller 180 controls the first display unit 210 and the second display unit 210 based on the external light amount sensed by the illuminance sensor 142, The first display unit 210 and the second display unit 260 may be controlled such that only one of the display units 200 of the display unit 260 is operated. That is, when the control unit 180 determines that the external light amount detected by the illuminance sensor 142 is equal to or greater than a preset light amount, the controller 180 controls the first display unit 210 to prevent the first display unit 210 from operating, Controls the second display unit 260 so that the second display unit 260 is operated while controlling the first display unit 210.

For example, as shown in FIG. 7A, the controller 180 determines that the external light amount sensed through the illuminance sensor 142 is equal to or greater than a predetermined light amount in the case of a weekday time period in which the external light amount is large. 7B, the controller 180 controls the first display unit 210 and the second display unit 260 in the second mode. That is, in order for the output data displayed through the screen of the display unit 200 to be displayed in black (D) and white (W) only by the second display unit 260 composed of the electronic ink panel, The second display unit 260 controls the first display unit 210 so that the first display unit 210 is not operated while the second display unit 260 displays the output data.

By operating only the second display unit 260 including the electronic ink panel when the external light amount is large, the user can easily recognize the output data without being disturbed by the external light, It is possible to reduce the fatigue of the user's eyes and at the same time to reduce the power consumption in the display unit 200. [

7C, the controller 180 determines that the external light amount detected through the illuminance sensor 142 is less than a predetermined light amount in the case of a night time zone in which the external light amount is small. Then, as shown in FIG. 7D, the controller 180 controls the first display unit 210 and the second display unit 260 in the first mode. That is, in order for the output data displayed through the screen of the display unit 200 to be displayed by the R, G, and B lights only by the first display unit 210 including the OLED, The first display unit 210 controls the second display unit 260 so that the first display unit 260 does not operate and simultaneously controls the first display unit 210 to display the output data.

In this way, the user can recognize the output data through the display unit 200 even in a dark place by operating the first display unit 210 including the OLED panel which emits light when the external light amount is small.

When the controller 180 determines that the current time is included in the predetermined time period, the controller 180 controls the first display unit 210 to be inactivated and the second display unit 210 The first display unit 210 and the second display unit 260 may be controlled such that the first display unit 260 and the second display unit 260 operate (i.e., in the second mode). For example, the preset time zone may be a weekly time zone or a user-designated time zone in which the amount of external light is large.

According to the modified embodiment of the present invention, the control method of the display unit 200 can be changed to the first mode or the second mode without the illuminance sensor 142.

8A to 8D are schematic views of a control method of the display unit 200 according to the second embodiment of the present invention.

The control unit 180 may control the display unit 200 according to the second embodiment of the present invention so that the first display unit 210 and the second display unit 260 The first display unit 210 and the second display unit 260 may be controlled such that only one display unit 200 is operated. If the controller 180 determines that the discharge rate of the battery 190 is equal to or greater than a preset ratio, the controller 180 controls the first display unit 210 to operate and the second display unit 260, And controls the first display unit 210 and the second display unit 260 to operate. That is, when the control unit 180 determines that the discharge rate of the battery 190 is equal to or greater than a preset ratio, the controller 180 controls the first display unit 210 and the second display unit 260 in the second mode do.

8A, the control unit 180 determines that the discharge rate of the battery 190 is equal to or greater than a predetermined rate (for example, 50%) based on the voltage and current output from the battery 190 (See I). 8B, the controller 180 controls the first display unit 210 and the second display unit 260 in the second mode. That is, in order for the output data displayed through the screen of the display unit 200 to be displayed in black (D) and white (W) only by the second display unit 260 composed of the electronic ink panel, The second display unit 260 controls the first display unit 210 so that the first display unit 210 is not operated while the second display unit 260 displays the output data.

Conversely, as shown in FIG. 8C, the controller 180 determines that the discharge rate of the battery 190 is less than a predetermined rate (for example, 50%) based on the voltage and current output from the battery 190 (See I). Then, as shown in FIG. 8D, the controller 180 controls the first display unit 210 and the second display unit 260 in the second mode. That is, in order for the output data displayed through the screen of the display unit 200 to be displayed by the R, G, and B lights only by the first display unit 210 including the OLED, The first display unit 210 controls the second display unit 260 so that the first display unit 260 does not operate and simultaneously controls the first display unit 210 to display the output data.

Advantageously, said predetermined ratio can be customized.

According to the second embodiment, when the discharge rate of the battery 190 is more than a preset ratio, the display unit 200 of the present invention drives only the second display unit 260 to extend the charging cycle of the battery 190 (That is, the use time of the battery 190 can be extended), and output data of high resolution can be displayed when the discharge rate of the battery 190 is less than a preset ratio.

If the control unit 180 determines that the discharge rate of the battery 190 is equal to or greater than a preset ratio, the control unit 180 divides the screen of the display unit 200, The second display unit 260 controls the first display unit 210 so that the first display unit 210 operates in a part of the screen and the second display unit 260 operates in the remaining part of the divided screen. Can be controlled. That is, when the control unit 180 determines that the discharge rate of the battery 190 is equal to or greater than a preset ratio, the controller 180 controls the first display unit 210 and the second display unit 260 in the third mode can do.

9A to 9C are schematic views illustrating a control method of the display unit 200 according to the third embodiment of the present invention.

According to the control method of the display unit 200 according to the third embodiment of the present invention, the controller 180 controls the first display unit 210 and the second display unit 210 based on the attribute of the selected application according to the input signal of the user, The first display unit 210 and the second display unit 260 may be controlled such that at least one display unit 200 among the display units 260 is operated.

The attributes of the application include, for example, whether or not the output data included in the selected application is output data for chromatic or achromatic colors, whether output data requesting high resolution, whether output data including moving image data, Output data, and the like. However, the attributes of these applications are only exemplary, and the present invention is not limited thereto.

As shown in FIGS. 9A to 9C, the controller 180 first determines (or classifies) attributes of the application or attributes of the output data displayed by the application when the application is selected.

As shown in FIG. 9A, when the control unit 180 determines that the application selected by the user includes output data for chromatic colors or output data for moving images (see A2 or a hatched application), the control unit 180 The first display portion 210 and the second display portion 260 are arranged such that the first display portion 210 is operated and the entire chargeable black material 263a of the second display portion 260 is directed toward the third electrode 261. [ 2 display unit 260 can be controlled. That is, when the application selected by the input signal of the user is an application for displaying output data for chromatic colors or output data for moving images, the control unit 180 controls the display unit 200 to the first mode, Output data to the user.

Preferably, an application that includes output data for a chromatic color or output data for a motion picture may include, for example, a video player application, a DMB application, and a video call application.

9B, when the control unit 180 determines that the application selected by the user includes output data for an achromatic color or output data for text (see A1 or a hatched application), the control unit 180 Controls the first display unit 210 and the second display unit 260 so that the first display unit 210 does not operate and the second display unit 260 operates. That is, when the application selected by the input signal of the user is an application for displaying output data for achromatic color or output data for text, the control unit 180 controls the display unit 200 to the second mode, Output data with high readability and wide viewing angle can be provided to the user.

Preferably, the application that includes output data for achromatic colors or output data for text includes, for example, an e-book application, an email application, an SNS application, a messenger application, a news application, an SMS application, an MMS application, can do.

9C, when the control unit 180 determines that the application selected by the user includes output data for achromatic color or output data for text and output data for chromatic colors or output data for moving images, The controller 180 controls the first display unit 210 and the second display unit 210 to display the output data according to the type of output data displayed on the divided screens (see S1 and S2) The second display unit 260 can be controlled.

At this time, the controller 180 controls the first display unit 210 to display output data for chromatic colors or output data for moving images in the divided screens (see S1 and S2) The first display unit 210 and the second display unit 260 may be controlled such that output data for data or text is displayed by the second display unit 260. [

For example, if the application selected by the user is a news application, the control unit 180 divides the screen of the display unit 200 into a top surface S1 and a bottom bottom surface S2, (I.e., output data for the text) on the second display unit 210, and the second display unit 210 displays a news video on the news anchor, 260) (i.e., in the third mode), the first display unit 210 and the second display unit 260 may be controlled.

According to a further embodiment of the third embodiment of the present invention, when the control unit 180 determines that the application selected by the user is a camera application, the control unit 180 determines that the playback image And controls the first display unit 210 and the second display unit 260 to be displayed by the second display unit 260. That is, the user executes the camera application and displays the reproduced image on the display unit 200 in order to review the photographed image after shooting the image. At this time, according to a further embodiment of the third embodiment of the present invention, 180 controls the display unit 200 in the second mode so that the reproduced image is displayed on the second display unit 260. [ When the user checks only the composition of the photographed image and the photographed range of the photographed image by the camera provided in the mobile terminal, it is not necessary to output a high resolution image, so that the power consumption in the display unit 200 is wasted Can be minimized.

Preferably, the controller 180 controls the first display unit 210 or the second display unit 210 so that the user can select the first display unit 210 or the second display unit to display the playback image before displaying the playback image. The first display unit 210 and the second display unit 260 may be controlled to be displayed on the second display unit 260. That is, the user can select whether or not to view the playback image at a high resolution before displaying the playback image on the display unit 200.

The present invention can provide the user with high-resolution output data or low-power-consumption output data according to the properties of the application.

It is to be understood that the configurations and methods of the above-described embodiments (mobile terminal 100) having the above-described (name) can be applied to a limited number of embodiments, All or a part of the above-described elements may be selectively combined.

100: mobile terminal 101: front case
102: rear case 110: wireless communication section
111: broadcast receiving module 112: mobile communication module
113 wireless Internet module 114 short-range communication module
115: Position information module 120: A / V input section
121: camera 122: microphone
130, 131, 132: user input unit 140: sensing unit
141: proximity sensor 142: illuminance sensor
150: Output 152: Acoustic output module
153: alarm part 154: haptic module
155: illumination unit 160: memory
170: interface unit 180: control unit
181: Multimedia module 190: Power supply
200: display unit 210: first display unit
260: second display section

Claims (19)

A first display unit for emitting R light, G light, and B light;
A second display unit disposed below the first display unit and displaying black and white; And
And controls at least one of the first display unit and the second display unit to operate the first display unit and the second display unit based on at least one of an external light quantity, a battery discharge rate, and an application attribute And a control unit,
Wherein the first display portion is an OLED panel, the second display portion is an electronic ink panel,
If the application selected by the user includes output data for achromatic colors, output data for text, output data for chromatic colors, or output data for moving images, the screen of the display unit is divided and displayed on a divided screen The output data is displayed according to the type of the output data,
The output data for the chromatic color or the output data for the moving picture in the divided screen is displayed by the first display unit and the output data for the achromatic color is displayed by the second display unit, And controls the first display unit and the second display unit. The method according to claim 1,
The first display unit includes a first substrate made of a light-transmitting material, a first electrode disposed at a lower portion of the first substrate to provide holes, a second electrode disposed under the first electrode to provide electrons, And an organic material layer disposed between the first electrode and the second electrode and provided with electrons and holes, and a second substrate disposed below the second electrode and made of a light-transmitting material. The method according to claim 1,
Wherein the second display portion includes a third electrode located below the first display portion and composed of a light-transmitting material, and an ink capsule disposed below the third electrode, the ink capsule including a chargeable black material and a chargeable white material, And a fourth electrode disposed under the electronic ink layer and electrophoretically moving the chargeable black material and the chargeable white material together with the third electrode. The method according to claim 1,
Further comprising a light intensity sensor for sensing an external light quantity,
The control unit controls the first display unit and the second display unit so that the first display unit does not operate and the second display unit operates so that the external light quantity detected by the illuminance sensor is greater than a predetermined light quantity The mobile terminal comprising: The method according to claim 1,
Wherein the control unit controls the first display unit and the second display unit such that the first display unit does not operate and the second display unit operates when the battery discharge rate is equal to or greater than a predetermined ratio. The method of claim 3,
Wherein the first display unit includes a first electrode and a second electrode, and the second display unit is disposed between the third electrode, the fourth electrode, and the third electrode and the fourth electrode, and the chargeable black material and the chargeable white material Wherein the first electrode to the fourth electrode are connected to the control unit disposed on the PCB substrate. The method according to claim 6,
Wherein the control unit controls the first display unit to operate when the application selected by the user includes output data for chromatic colors or output data for moving images and the entire chargeable black material of the second display unit to perform electrophoresis And controls the first display unit and the second display unit so that black is displayed on the third electrode side,
Wherein the application includes a video player application, a DMB application, and a video call application. The method according to claim 6,
Wherein the control unit controls the first display unit so that the first display unit does not operate when the application selected by the user includes output data for achromatic color or output data for text, Controls the display unit,
Wherein the application includes an electronic book application, an e-mail application, an SNS application, a messenger application, a news application, an SMS application, an MMS application, and a voice call application. delete 9. The method according to any one of claims 1 to 8,
And a phase compensation layer for compensating for a phase difference of output data generated due to the refractive index of the first display unit when the second display unit is operated is further provided between the first display unit and the second display unit. . A first display unit for emitting R light, G light, and B light;
A second display unit disposed below the first display unit and displaying black and white; And
And controls at least one of the first display unit and the second display unit to operate the first display unit and the second display unit based on at least one of an external light quantity, a battery discharge rate, and an application attribute And a control unit,
Wherein the first display portion is an OLED panel, the second display portion is an electronic ink panel,
Wherein the control unit controls the first display unit to operate the first display unit in a part of the divided screens and to control the first display unit to operate the second display unit in a part of the divided screens when the battery discharge rate is determined to be equal to or greater than a predetermined ratio, And controls the second display unit to operate the display unit. delete delete delete delete delete delete delete delete

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