KR101667718B1 - Stereoscopic 3 dimension display apparatus - Google Patents

Abstract

The present invention provides a display device comprising: a first display unit; A transparent second display unit positioned on a front surface of the first display unit; And a barrier for selectively blocking the left-eye image information and the right-eye image information is displayed on the second display unit, wherein the left-eye image information and the right- And a control unit.

Description

[0001] STEREOSCOPIC 3 DIMENSION DISPLAY APPARATUS [0002]

The present invention relates to a stereoscopic image display apparatus and a stereoscopic image display method using a parallax barrier system using a transparent display apparatus.

The terminal can move And can 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.

Particularly, in order to realize a three-dimensional stereoscopic image in a mobile terminal, a parallax barrier method, which is a method of realizing a three-dimensional image by mainly viewing left and right stereo images separately, is mainly used. A slit-shaped opening arranged in the vertical direction or the horizontal direction is superimposed on the plane image on which the left / right-eye image information is displayed, thereby causing the stereoscopic effect of the observer to feel a three-dimensional effect.

However, the above-described stereoscopic image display device using a general parallax barrier liquid crystal panel shows some disadvantages, one of which is a phenomenon in which the brightness is rapidly deteriorated particularly in the 3D mode. In addition, the parallax barrier liquid crystal panel is used only as a barrier, and its application range is narrow.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a stereoscopic image display apparatus using a superimposed display unit.

According to an aspect of the present invention, there is provided an image display apparatus including a first display unit; A transparent second display unit positioned on a front surface of the first display unit; And a barrier for selectively blocking the left-eye image information and the right-eye image information is displayed on the second display unit, wherein the left-eye image information and the right- And a control unit.

The image display apparatus according to at least one embodiment of the present invention configured as described above can increase the luminance and increase the contrast at the same time.

In addition, the image display apparatus according to at least one embodiment of the present invention configured as described above can simultaneously display the stereoscopic image and the flat image in the overlapped or separate areas.

In addition, the image display apparatus according to at least one embodiment of the present invention configured as described above adjusts transparency to facilitate a user's touch input.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
FIG. 2A is a front perspective view of a portable terminal according to an embodiment of the present invention; FIG.
FIG. 2B is a rear perspective view of a portable terminal according to an embodiment of the present invention; FIG.
3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.
4 is a conceptual diagram for explaining the proximity depth of the proximity sensor;
FIG. 5 is a conceptual diagram illustrating a perspective view of a pair of display units and a control method for a touch operation. FIG.
6 is a cross-sectional view of a display having a double bond structure according to the present invention.
7 is a view for explaining a parallax barrier method applied to a mobile terminal having a display having an overlapping structure;
FIG. 8 is a block diagram of a stereoscopic image display apparatus implementing a three-dimensional stereoscopic image in a terminal having an overlapped display unit according to an embodiment of the present invention. FIG.
Figures 9-11 illustrate a display form of 155 in accordance with one embodiment of the present invention.
12 is a view showing a front side of a display unit 155 in the case where a stereoscopic image and a planar image are simultaneously displayed in a superimposed manner according to an embodiment of the present invention.
13 is a diagram illustrating a method of adjusting transparency 155 in a case where a stereoscopic image and a planar image are simultaneously superimposed and displayed according to an embodiment of the present invention.
14A and 14B illustrate a stereoscopic image area and a planar image area that are simultaneously displayed in separate areas according to an 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 (DVF-H) 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 image frames such as still images or moving images 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 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. [ 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.

The output unit 150 is for generating output related to the visual, auditory or tactile sense and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154 .

The display unit 151 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 151 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display 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 151 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 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, 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 151 or a capacitance generated in a specific portion of the display unit 151 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 151 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 151 or the audio output module 152 so that they 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 a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is 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 display unit 151, the sound output unit 152, the camera 121, the user input units 130/131 and 132, the microphone 122, the interface 170, and the like may be disposed in the front body 101 have.

The display unit 151 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 151 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 or the size of the sound output from the display unit 151 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 talking and the like, a broadcast signal reception antenna 116 may be additionally disposed on the side of the terminal body. The antenna 116, which forms part of the broadcast receiving module 111 (see FIG. 1), can 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 151. [ In this case, if the display unit 151 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 151 of the front case 101. The touch pad 135 may be disposed parallel to the rear of the display unit 151. The touch pad 135 may have a size equal to or smaller than that of the display unit 151.

Hereinafter, a related operation of the display unit 151 and the touch pad 135 will be described with reference to FIGS. 3A and 3B.

3A and 3B are front views of a portable terminal for explaining an operation state of the portable terminal according to the present invention.

Various types of time information can be displayed on the display unit 151. [ These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

At least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement for inputting such information, thereby being implemented as a keypad. Such a keypad may be called a so-called " soft key ".

FIG. 3A shows a touch input to a soft key through a front surface of a terminal body.

The display unit 151 may operate as an entire area or may be divided into a plurality of areas and operated. In the latter case, the plurality of areas can be configured to operate in association with each other.

For example, an output window 151a and an input window 151b are displayed on the upper and lower portions of the display unit 151, respectively. The output window 151a and the input window 151b are areas allocated for outputting or inputting information, respectively. In the input window 151b, a soft key 151c in which a number for inputting a telephone number or the like is displayed is output. When the soft key 151c is touched, a number corresponding to the touched soft key is displayed on the output window 151a. When the first operation unit 131 is operated, call connection to the telephone number displayed on the output window 151a is attempted.

FIG. 3B shows the input of a touch applied to the soft key through the rear surface of the terminal body. FIG. 3A shows a case where the terminal body is vertically arranged, and FIG. 3B shows a case where the terminal body is arranged horizontally. The display unit 151 may be configured to convert the output screen according to the arrangement direction of the terminal body.

3B shows that the text input mode is activated in the portable terminal. The display unit 151 displays an output window 151a 'and an input window 151b'. In the input window 151b ', a plurality of soft keys 151c' displayed with at least one of letters, symbols, and numbers may be arranged. The soft keys 151c 'may be arranged in the form of a QWERTY key.

When the soft keys 151c 'are touched through the touch pad 135 (see FIG. 2B), characters, numbers, symbols corresponding to the touched soft keys are displayed on the output window 151a'. As described above, the touch input through the touch pad 135 is advantageous in that the soft key 151c 'can not be blocked by the finger when the touch is input, compared with the touch input through the display unit 151. [ In the case where the display unit 151 and the touch pad 135 are formed to be transparent, the fingers located on the rear side of the terminal body can be visually confirmed, thereby enabling a more accurate touch input.

The display unit 151 or the touch pad 135 may be configured to receive a touch input by scrolling, as well as the input method described in the above embodiments. The user can move a cursor or a pointer located on an object displayed on the display unit 151, for example, an icon or the like, by scrolling the display unit 151 or the touch pad 135. [ Further, when the finger is moved on the display portion 151 or the touch pad 135, the path along which the finger moves may be visually displayed on the display portion 151. [ This will be useful for editing the image displayed on the display unit 151. [

One function of the terminal may be executed in response to a case where the display unit 151 (touch screen) and the touch pad 135 are touched together within a predetermined time range. In the case of being touched together, there may be a case where the user clamps the terminal body using the thumb and index finger. The one function may be activation or deactivation of the display unit 151 or the touch pad 135, for example.

The proximity sensor 141 described with reference to Fig. 1 will be described in more detail with reference to Fig.

4 is a conceptual diagram for explaining the proximity depth of the proximity sensor.

As shown in FIG. 4, when a pointer such as a user's finger, a pen, or the like approaches the touch screen, the proximity sensor 141 disposed in or near the touch screen senses the proximity sensor and outputs a proximity signal.

The proximity sensor 141 may be configured to output different proximity signals according to the distance between the proximity-touched pointer and the touch screen (hereinafter referred to as "proximity depth").

In FIG. 4, for example, a cross-section of a touch screen having proximity sensors capable of sensing three proximity depths is illustrated. Of course, proximity sensors that detect less than three or more than four proximity depths are also possible.

Specifically, when the pointer is completely in contact with the touch screen (d0), it is recognized as a contact touch. If the pointer is located on the touch screen at a distance less than the distance d1, it is recognized as a proximity touch of the first proximity depth. If the pointer is located on the touch screen at a distance d1 or less and less than the distance d2, the pointer is recognized as a proximity touch of the second proximity depth. If the pointer is located on the touch screen at a distance d2 or more and less than the distance d3, it is recognized as a proximity touch of the third proximity depth. If the pointer is located at a distance d3 or more on the touch screen, it is recognized that the proximity touch is released.

Accordingly, the controller 180 can recognize the proximity touch as various input signals according to the proximity depth and proximity position of the pointer, and perform various operation control according to the various input signals.

5 is a conceptual diagram for explaining a control method for a touch operation in a form in which a pair of display units 155 and 156 are overlapped.

The terminal shown in this figure is a folder type terminal connected to a main body so that a folder portion is foldable. The first display unit 155 mounted on the folder unit may be of a light transmitting type or a transparent type such as TOLED or the second display unit 156 mounted on the main body may be a form that does not transmit light like an LCD. The first and second display units 155 and 156 may be configured as a touch screen capable of touch input, respectively.

For example, when a touch (a contact touch or a proximity-touch) to the first display unit or the TOLED 155 is detected, the control unit 180 determines whether the touch At least one of the images displayed in the TOLED 155 may be selected or run.

Hereinafter, with respect to the manner in which the information displayed on the other display unit or the LCD 156 is controlled when touching the TOLED 155 exposed to the outside in an overlapped form, a touch, a long touch, a long touch and drag ), And so on.

In the overlapped state (the mobile terminal is in a closed state), the TOLED 155 is arranged to overlap the lower side of the LCD 156. In this state, if a touch such as a long touch (for example, a touch that lasts for 2 seconds to 3 seconds) is detected in a manner different from the touch for controlling the image displayed on the TOLED 155 in advance, ) Causes at least one image of the image list displayed on the LCD 156 to be selected according to the sensed touch input. The result according to the execution of the selected image is displayed on the TOLED 155.

The long touch may also be used to selectively move a desired one of the entities displayed on the LCD 156 to the TOLED 155 (without performing any action thereto). That is, when a user selects one area of the TOLED 155 corresponding to a specific entity of the LCD 156 In the case of a long touch, the control unit 180 moves the corresponding object to the TOLED 155 to be displayed. The entity displayed on the TOLED 155 may also be displayed on the LCD 156 by a predetermined touch input to the TOLED 155, for example, flicking, swirling, and the like. In this figure, the menu No. 2 displayed on the LCD 156 is displayed on the TOLED 155.

If another input, for example, a drag, is detected in addition to the long touch, the control unit 180 is a function related to the image selected by the long touch. For example, a preview screen for the image is displayed on the TOLED 155, As shown in FIG. In this drawing, a case where a preview (male photograph) is performed on the menu No. 2 (image file) is illustrated.

The control unit 180 displays a selection cursor (or a selection bar) of the LCD 156 in the state that the preview screen is being output, while dragging toward another image is further performed on the TOLED 155 while maintaining the long touch And displays the image selected by the selection cursor on a preview screen (female photograph). Thereafter, when the touch (long touch and drag) ends, the controller 180 displays the first image selected by the long touch.

When the slide (the operation of the proximity touch corresponding to the drag) is detected together with the long proximity touch (the proximity touch continuing for at least 2 seconds to 3 seconds) to the TOLED 155 .

When a touch operation other than those described above is detected, the controller 180 can operate in the same manner as a general touch control method.

The control method for the touch operation in the overlapped form can be applied to a terminal having a single display. In addition, the present invention can be applied to a terminal different from a folder type having a dual display.

Hereinafter, embodiments related to a control method that can be implemented in the terminal configured as above will be described with reference to the accompanying drawings. The following embodiments can be used alone or in combination with each other. In addition, the embodiments described below may be used in combination with the above-described user interface (UI).

The embodiments described below are also applicable to the form factor of all currently available mobile terminals (e.g., a bar type, a flip type, a slide type, a swing type, a folder type, a clip type that can be combined / separated with the main body, .

6 is a conceptual diagram for explaining a configuration of a display unit of a mobile terminal according to the present invention.

In this embodiment, the display unit 151 or the display module 151 has a form in which the first and second display units 155 and 156 are overlapped. The first and second display units 155 and 156 are composed of a transparent OLED (TOLED) and a non-transparent display (e.g., LCD, E-paper). Particularly, when the electronic paper is applied to a watch phone, power consumption is low, so that the electronic paper does not enter the sleep mode and is always on.

In addition, the transparent display and the non-transparent display may be overlapped or separately formed. For example, a single display may be composed of a single module by superimposing a transparent display and a non-transparent display, as shown in Figure 6, and the dual display may include a transparent display and a non-transparent display As a separate display module.

Hereinafter, in all the embodiments, the transparent display (or the second display) may be referred to as TOLED (Transparent OLED), and the non-transparent display (or the first display) may be a liquid crystal display (LCD) -paper). However, the transparent display and the non-transparent display are not intended to be limited to TOLED and LCD (or E-paper), respectively. The first display may also include a transparent display, such as TOLED.

In the mobile terminal according to the present invention, when the transparent display (TOLED) is operated alone, the driving of the LCD may be blocked so as not to interfere with the display of the TOLED. Also, the transparency of the second display can be controlled so as not to interfere with the display of the opaque display (LCD or E-paper). The transparency can be controlled from 0% which is completely transparent to 100% which is opaque.

A touch pad (not shown) may be used as a touch screen on either the upper side or the lower side of the TOLED and the LCD (or E-paper).

Hereinafter, a method of displaying stereoscopic images in a mobile terminal having a display having a superimposed structure will be described.

7 is a view for explaining a parallax barrier method applied to a mobile terminal having a display having an overlapped structure.

The parallax barrier type display requires a main display device for displaying a flat image and a separate parallax barrier for forming a slit-shaped opening. In a conventional parallax stereoscopic image display device, a liquid crystal panel a crystal display panel is used. In an embodiment related to the present invention, a transparent display device such as TOLED is used.

At this time, a left-eye pixel L for displaying left-eye image information and a right-eye pixel R for displaying right-eye image information are alternately formed on the liquid crystal panel of the first display unit 156, A backlight (not shown) is provided. The second display unit 155 is positioned between the first display unit 156 and the observers 211 and 212 to transmit and block light for each position. The left and right eye pixels L (R) The slit 230 and the barrier 220, which selectively pass and block the light from the light source 220, are alternately displayed in a stripe form. And may be changed in the direction of the barrier 220 according to the rotation of the mobile terminal, that is, in the horizontal or vertical direction. In the case of TOLED, the slit 230 means that the pixel is turned off and the barrier 220 can be turned on. The opaque state means a state in which the light emitted from the first display unit 156 is actually blocked or the observer can not recognize the light emitted from the first display unit 156 due to the emission of the TOLED pixel can do.

The light having passed through the left eye pixel L of the first display unit 156 reaches the left eye 211 of the observer through the slit 230 of the second display unit 155, The light passing through the right eye pixel R of the second display unit 155 reaches the observer's right eye 212 through the slit 230 of the second display unit 155. [ In the images displayed through the left and right eye pixels, there is sufficient parallax information that the human being can sufficiently perceive, so that the observer perceives the three-dimensional stereoscopic image.

8 is a block diagram of a stereoscopic image display apparatus for implementing a three-dimensional stereoscopic image in a terminal having an overlapped display unit according to an embodiment of the present invention.

An image is processed to extract left-eye image information and right-eye image information, and the extracted images are rearranged so that they can be displayed on the first display unit 156 in a space-division manner. That is, the left-eye image information and the right-eye image information are displayed on the left-eye pixel 201 and the right-eye pixel 202, respectively, which are formed in turn. The method and apparatus for alternately displaying the left-eye image information and the right-eye image information on the first display unit 156 will not be described in detail with reference to the known art.

The second display unit 155 displays the left eye image information and the right eye image information on the first display unit 156 and the second display unit 155 displays the second eyeball image on the second display unit 155 to separate the respective images. As described above, the second display portion 155 is displayed at regular intervals and each pixel between the slits is displayed as a turn off state. The second display unit 155 displays the interval between the left display pixel and the right display pixel of the first display unit 156, the interval between the second display unit 155 and the first display unit 156, The position, the interval, the width, and the like can be determined according to the interval between the unit 155 and the observer, and the direction of the observer with respect to the display unit. In addition, the position, spacing, width, etc. of the second display unit 155 can be changed as the relative position between the display unit and the observer changes (or according to user setting). As described below, whether or not the second display unit 155 is displayed and the brightness or color of the second display unit 155 to be displayed can be variously changed.

9 to 11 are views showing a display form of the second display unit 155 according to an embodiment of the present invention.

9 is a sectional view of a display unit in a 2D mode for displaying a plane image. In the 2D mode, all pixels of the second display unit 155 are kept in a transparent state, and thus light emitted from all the pixels of the first display unit 156 is transmitted. Therefore, it is possible to display a flat image without decreasing the luminance in the 2D mode.

10 is a cross-sectional view of a display unit in which a black or white second display unit 155 is displayed in the second display unit 155 according to an embodiment of the present invention.

When the second display unit 155 is displayed in black, the brightness of the display unit 151 is reduced by half in comparison with the case where the second display unit 155 is not displayed (FIG. 9). Therefore, when the second display unit 155 is displayed in white, the brightness of the display unit 151 may be increased compared to when the second display unit 155 is displayed in black. Therefore, the visibility of the display portion 151 can be improved in the outdoors with high illumination. However, when the white second display portion 155 is displayed as a whole, the contrast of the image may be deteriorated. Accordingly, the brightness of the second display unit 155 can be adjusted according to the brightness or the ambient illuminance of the image displayed on the first display unit 156. The second display unit 155 is brightly displayed when a bright stereoscopic image is displayed, and the second display unit 155 is darkly displayed when a dark stereoscopic image is displayed. In addition, when the visibility is low due to high ambient illumination, the second display unit 155 is displayed in a bright state, and the dark second display unit 155 is displayed when the ambient illumination is low.

11 is a view illustrating a front portion of a second display unit 155 in which the brightness of each part of the second display unit 155 is adjusted according to the brightness of the surrounding image according to an embodiment of the present invention.

As shown in Fig. 11, the brightness of each part of the second display part 155 can be individually adjusted. Each part of the second display part 155 is divided into a plurality of parts in the horizontal direction by the second display part 155 of one spline type and the second display part 155 of one longitudinal stripe type, It can mean each part. And may refer to each pixel of the second display unit 155. The respective portions of the second display portion 155 of the second display portion 155 can be individually adjusted in brightness or color depending on the image displayed on the first display portion 156. [

As shown in FIG. 8, the control unit processes an image to be displayed to extract a left eye image and a right eye image, rearranges the left eye image, and extracts pixel contrast information of the rearranged image. (Or white) of the barrier portion 221 corresponding to a relatively bright portion in the image by controlling the driving portion of the second display portion 155 according to the extracted contrast information, and displays the barrier portion 221 corresponding to the relatively dark portion in the image The portion 223 displays dark (or black). Also, the barrier portion 222 corresponding to the portion corresponding to the average brightness in the image is displayed at its medium brightness (or gray). For convenience of explanation, the three levels of brightness have been described, but the present invention is not limited thereto, and the brightness may be divided into more steps or further continuously.

12 is a front view of the second display unit 155 when the stereoscopic image and the planar image are simultaneously displayed in a superimposed manner according to an embodiment of the present invention.

When an event such as reception of a text message occurs while displaying a three-dimensional stereoscopic image, a three-dimensional stereoscopic image and a two-dimensional plane image can be simultaneously displayed.

The three-dimensional stereoscopic image is displayed on the first display unit 156 separately from the left-eye image and the right-eye image. The planar image to be simultaneously displayed is displayed in the barrier area 220 of the second display part 155 and the slit area 230 is kept in a transparent state. The second display unit 155 selectively blocks the left-eye image and the right-eye image of the first display unit 156, and at the same time, controls the respective pixels of the barrier area individually to display the image. The brightness or color of each pixel can be adjusted to display an image in the barrier area of the second display unit 155. [

13 is a diagram illustrating a method of adjusting the transparency of the second display unit 155 when the stereoscopic image and the planar image are simultaneously superimposed and displayed according to an embodiment of the present invention.

During the three-dimensional image display, when the two-dimensional plane image is simultaneously displayed by the above method and the user's touch input is waiting, the transparency of the second display unit 155 is adjusted to facilitate the user's touch input .

13, the width of the second display unit 155 displayed on the second display unit 155 can be changed. In the case where the width of the barrier is wide 220 ', the light emitted from the second display part 155 increases and the light emitted from the first display part 156 decreases in comparison with the narrow width of the barrier 220 , So that the observer can more clearly recognize the planar image displayed on the second display unit 155. Accordingly, the sense of distance to the display unit 151 can be restored and the touch input of the user can be facilitated.

As described with reference to FIG. 4, the transparency of the second display unit 155 can be changed according to the approach distance of an object such as a finger detected by the proximity sensor. When the proximity sensor detects an object within a predetermined distance, as described with reference to FIG. 13, the transparency can be lowered to facilitate the user's touch. Also, as the object approaches within a predetermined distance, the transparency can be gradually reduced and the transparency can be gradually increased as the object moves away.

14A and 14B are views showing a stereoscopic image area and a planar image area displayed simultaneously in different areas according to an embodiment of the present invention.

14A and 14B, the display unit 151 is divided into a three-dimensional image display area 401 and a flat image display area 402. [ 14A is a frame form, and FIG. 14B is a horizontal screen dividing form. Of course, the shape of each area is not limited to this, and may be various forms according to the user's setting or displayed on the body image and the plane image. In addition, when a predetermined signal input from a user, for example, a predetermined key input, a predetermined gesture, or the like is input during the stereoscopic image display, the stereoscopic image display area 401 is reduced (or not reduced) A flat image display area 402 may be created in the region or in the stereoscopic image display area 401 to display a flat image.

The left eye image and the right eye image are divided and displayed on the first display unit 156 corresponding to the stereoscopic image display area 401 and the second display unit 155 corresponding to the stereoscopic image display area 401 A second display unit 155 for selectively blocking the left eye image and the right eye image of the first display unit 156 is displayed.

The second display portion 155 is not displayed on the second display portion 155 corresponding to the planar image display region 402 and at least one of the second display portion 155 and the first display portion 156 is provided with a plane The image is displayed.

Accordingly, the stereoscopic image and the planar image can be simultaneously displayed in various forms, and there is no barrier in the flat image portion, so that it is unnecessary to reduce the luminance.

Further, according to an embodiment of the present invention, the above-described method can be implemented as a code that can be read by a processor on a medium on which the program is recorded. Examples of the medium that can be read by the processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, etc., and may be implemented in the form of a carrier wave (e.g., transmission over the Internet) .

It is to be understood that the configurations and methods of the above-described embodiments (mobile terminals) having the above-described (name) may not be limitedly applied, but the embodiments may be applied to all or a part of each embodiment Some of which may be selectively combined.

In the foregoing, preferred embodiments of the present invention have been described with reference to the accompanying drawings.

Here, the terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, but should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It should be understood that various equivalents and modifications may be present.

100: mobile terminal 110: wireless communication unit
120: A / V input unit 130: user input unit
140: sensing unit 150: output unit
160: memory 170: interface section
180: control unit 190: power supply unit

Claims (9)

A first display unit;
A transparent second display unit positioned on a front surface of the first display unit; And
A control unit for displaying a barrier for selectively blocking the left-eye image information and the right-eye image information on the second display unit, the left-eye image information and the right- Lt; / RTI >
The control unit
Wherein the contrast information of the image to be displayed on the first display unit is extracted and the brightness of the barrier is adjusted according to the contrast information of the image of the adjacent portion. The stereoscopic image display apparatus of claim 1, wherein the second display unit is a TOLED that can be controlled on a pixel-by-pixel basis. The stereoscopic image display apparatus of claim 1, wherein the barrier is one of white, gray, and black. The apparatus of claim 1, wherein the control unit
Wherein the brightness of the barrier displayed is adjusted according to the brightness of the first display unit or the brightness of the surroundings. delete The apparatus of claim 1, wherein the control unit
So that information is displayed in an area where the barrier is displayed. The method according to claim 1,
Further comprising a proximity sensor for detecting the presence or absence of an object approaching the first or second display unit and an approach distance,
The control unit
And adjusts the brightness of the first display unit or the second display unit or the transmittance of the second display unit according to the approach distance detected by the proximity sensor. 8. The method of claim 7,
The control unit
And adjusts the area of the barrier according to an approach distance detected by the proximity sensor. The method according to claim 1,
The control unit
Wherein a barrier is displayed in a second area overlapping with the first area of the second display part and the barrier is displayed in the first area of the first display part, Wherein a plane image is displayed in an area other than the first area or in an area other than the second area of the second display part.

Images