KR20130070766A - Mobile terminal - Google Patents

Abstract

PURPOSE: A mobile terminal is provided to protect personal information by preventing the showing of the personal information to a user who is located in a point which is separated from a display unit of the mobile terminal at a predetermined angle. CONSTITUTION: Left/right image output units(201,202) of a display unit output a left eye image and a right eye image for displaying a stereoscopic image. A first lens unit(301) is prepared in a position corresponding to a left/right image output unit and a front side of the left/right image output unit. Second lens units(302a,302b) are prepared in a position corresponding to a pattern output unit and a front side of the pattern output unit. A control unit controls a refractive index of the first lens unit by control of a driving unit in order that patterns(203a,203b), which are outputted in the pattern output unit, are refractive to the outside based on a vertical direction of the display unit.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal.

Recently, with the development of portable terminal technology, a technology for displaying more realistic images has been developed. Accordingly, a 3D image display device capable of displaying an image in three dimensions has been developed, in addition to a high resolution image display device having increased pixels for displaying an image. The 3D image display device may be applied to a TV, but also applied to various fields such as medical images, games, advertisements, education, military, and the like, and thus a greater effect due to a stereoscopic effect may be expected.

Meanwhile, as the stereoscopic image processing technology is developed, the stereoscopic image implemented through the display may include information related to privacy such as personal information.

Accordingly, there is a need for technology development for a method of efficiently protecting personal information included in the stereoscopic image.

An object of the present invention is to provide a mobile terminal capable of efficiently protecting personal information in a 3D image by changing a pattern of a lenticular lens.

Mobile terminal according to an aspect of the present invention, the display unit; And a controller configured to provide a control signal to the display unit.

The display unit may include a left and right image output unit configured to output a left eye image and a right eye image for displaying stereoscopic vision; A pattern output unit disposed at both ends of the left and right image output units to output a predetermined pattern; A first lens unit provided at a position corresponding to a front surface of the left and right image output units and the left and right image output units; And a second lens unit provided at a position corresponding to the front surface of the pattern output unit and the pattern output unit.

The mobile terminal,

And a driver configured to adjust a refractive index of the first lens unit such that an image output from the pattern output unit is deflected outwardly based on the vertical direction of the display unit.

The controller may control the driver.

The first lens unit and the second lens unit may include a columnar liquid lens.

The columnar liquid lens may be a lens formed by terminating a portion of a cylinder or an elliptic column.

The refractive index of the liquid lens configuring the first lens unit and the second lens unit may be predetermined.

The left and right image output unit includes a left eye image output unit for outputting the left eye image and a right eye image output unit arranged in parallel with the left eye image output unit to output the right eye image, and the liquid lens constituting the first lens unit. The index of refraction causes the left eye image to be refracted in the left visual field direction, and the right eye image to the right visual field direction.

The refractive index of the liquid lens constituting the second lens unit refracts the image output from the pattern output unit to the outside in the vertical direction of the display unit.

The image output from the pattern output unit may be an image unrelated to the stereoscopic image output from the left and right image output units.

Specific details of other embodiments are included in the detailed description and the drawings.

According to a mobile terminal according to an embodiment of the present invention, when providing information that requires privacy such as personal information in a 3D image, the personal information is located at a point separated from the display of the mobile terminal by a predetermined angle or more. By making it invisible to the user, the 3D image can be provided and the privacy can be protected.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
2 and 3 are views for explaining a stereoscopic image display method using a binocular parallax associated with embodiments of the present invention.
FIG. 4 is a conceptual diagram for explaining in detail the principle of forming a stereoscopic image using the lenticular lens array shown in FIG. 2.
5 through 6 illustrate examples of a liquid crystal array for displaying 2D or 3D images in a display panel of a mobile terminal according to an embodiment of the present invention.
7 is a diagram illustrating the structure of a display panel of a mobile terminal according to an embodiment of the present invention in more detail.
FIG. 8 is a diagram illustrating a path of light output from the left and right image output units according to the structure of the display unit illustrated in FIG. 7.

The foregoing objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Like numbers refer to like elements throughout. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

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.

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 unit 160, An interface unit 170, a control unit 180, a power supply unit 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 a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may 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, it may exist in the form of Electronic Program Guide (EPG) of Digital Multimedia Broadcasting (DMB) or Electronic Service Guide (ESG) of Digital Video Broadcast-Handheld (DVB-H).

The broadcast receiving module 111 receives broadcasting signals using various broadcasting systems. In particular, the broadcasting receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S) Only Digital Broadcast-Handheld (DVB-H), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems that provide broadcast signals 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 unit 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 refers to a module for wireless Internet access, and the wireless Internet module 113 can be embedded in the mobile terminal 100 or externally. Wireless Internet technologies may include Wireless LAN (Wi-Fi), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), High Speed Downlink Packet Access (HSDPA), and the like.

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 the short distance communication technology.

The location information module 115 is a module for confirming or obtaining the location of the mobile terminal. The location information module 115 may obtain location information using a global navigation satellite system (GNSS). Here, the Global Positioning System (GNSS) is a term used to describe the radionavigation satellite systems in which certain types of radionavigation receivers orbiting the Earth are transmitting reference signals that can determine their position near the surface or ground surface . The Global Positioning System (GNSS) includes Global Positioning System (GPS) in the United States, Galileo in Europe, GLONASS (Global Orbiting Navigational Satelite System) in Russia, COMPASS in China and Japan QZSS (Quasi-Zenith Satellite System), which is operated by the Ministry of Land, Infrastructure and Transport.

As a representative example of the GNSS, the location information module 115 may be a Global Position System (GPS) module. The GPS module calculates information on a distance (distance) from three or more satellites to a point (object), information on a time when the distance information is measured, and then applies a trigonometric method to the calculated distance information, Dimensional position information according to latitude, longitude, and altitude with respect to a point (object) in the three-dimensional space. Further, a method of calculating position and time information using three satellites and correcting the error of the calculated position and time information using another satellite is also used. The GPS module continuously calculates the current position in real time, and calculates velocity information using the current position.

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 call 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 unit 160 or may be transmitted to the outside through the wireless communication unit 110. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

The microphone 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 pressure / capacitance), 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 may sense whether the slide phone is opened or closed. In addition, it may be responsible for a sensing function related to 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.

The output unit 150 may include a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154, for example, for generating output related to visual, auditory, have.

The display unit 151 displays and 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, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, a three-dimensional display 3D display).

Some of these displays may be transparent or light transmissive so that they can be seen through. This may be referred to as a transparent display. A typical example of the transparent display is a transparent LCD or 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 one another, and may be disposed on different surfaces, respectively.

The display unit 151 is connected to a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') having 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. As a result, the controller 180 can know which area of the display unit 151 is touched.

Referring to FIG. 1, a proximity sensor may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is enclosed 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 photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation 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 allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." 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 unit 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 outputs an acoustic signal related to a function (e.g., a call signal reception sound, a 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. Also, the sound output module 152 may output sound through the earphone jack 116. The user can connect the earphone to the earphone jack 116 to hear the sound output.

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 also be output through the display unit 151 or the audio output module 152.

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 vibration generated by the haptic module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may be configured to perform various functions such as an effect of stimulation by a pin arrangement vertically moving with respect to a contact skin surface, an effect of stimulation by air spraying force or suction force through a jet opening or a suction opening, A variety of tactile effects such as an effect of stimulation through contact of an electrode, an effect of stimulation by an electrostatic force, and an effect of reproducing a cold sensation using a heat absorbing 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 feel the tactile effect through the muscles of the user's 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 unit 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 unit 160 may store data related to vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory unit 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) (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 unit 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 receives power from the external device to transfer the data to each component in the mobile terminal 100 or to transmit data in the mobile terminal 100 to an 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.

The interface unit may be a passage through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, or various command signals input from the cradle by a user may be transferred. It may be a passage that is delivered 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 control unit 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 an external power source and an internal power source under the control of the controller 180 to supply power for operation of each component.

The 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 electrical units for performing functions. In some cases, And may be implemented by the control unit 180.

In a software implementation, embodiments such as procedures or functions may be implemented with separate software modules that allow at least one function or operation to be performed. The software code may be implemented by a software application written in a suitable programming language. In addition, the software code may be stored in the memory unit 160 and executed by the controller 180.

2 and 3 are views for explaining a stereoscopic image display method using binocular parallax associated with embodiments of the present invention, Figure 2 is a method using a lenticular lens array (lenticular lens array) 3 shows a method of using a parallax barrier.

Binocular parallax (stereo disparity) refers to the difference in the way the left and right eyes of a person see objects. When a human's brain synthesizes the image seen through the left eye and the image seen through the right eye, the synthesized image makes a person feel three-dimensional. Hereinafter, a phenomenon in which a person perceives a stereoscopic effect according to a binocular disparity is referred to as 'stereoscopic vision', and an image causing stereoscopic vision is referred to as a 'stereoscopic image'. Also, when a specific object included in the image causes stereoscopic vision, the object is referred to as a 'stereoscopic object'.

The stereoscopic image display method according to the binocular disparity can be classified into a spectacle type requiring special glasses and a non-eye type requiring no glasses. The spectacles include a method using sunglasses with wavelength selectivity, a polarization glasses method using a light blocking effect according to a polarization difference, and a time-division glasses method alternately presenting left and right images within an afterimage time of an eye. In addition, there is a method in which a filter having different transmittances is mounted in the left and right sides to obtain a stereoscopic effect on the movement in the left and right directions according to the time difference of the visual system coming from the difference in the transmittances.

The autostereoscopic method, in which a stereoscopic effect is generated on the image display surface rather than the observer, includes a parallax barrier method, a lenticular lens method, a microlens array method, and the like.

Referring to FIG. 2, the display module 151 includes a lenticular lens array 81a to display a stereoscopic image. The lenticular lens array 81a includes a display surface 83 and left and right eyes 82a in which pixels L to be input to the left eye 82a and pixels R to be input to the right eye 82b are alternately arranged along the horizontal direction. Located between 82b), it provides optical discrimination directivity for the pixel L to be input to the left eye 82a and the pixel R to be input to the right eye 82b. The image of the human eye is viewed through the left eye 82a and the image through the right eye 82b while the human eye is viewed through the left eye 82a and the right eye 82b. And the stereoscopic image is observed.

Referring to FIG. 3, the display module 151 includes a vertical grid parallax barrier 81b to display a stereoscopic image. The parallax barrier 81b includes a display surface 83 and left and right eyes 82a in which pixels L to be input to the left eye 82a and pixels R to be input to the right eye 82b are alternately arranged along the horizontal direction. 82b) between the left eye 82a and the right eye 82b through the vertical lattice-shaped aperture (aperture) to be viewed separately. Accordingly, the human brain combines the image viewed through the left eye 82a and the image viewed through the right eye 82b to observe the stereoscopic image. This parallax barrier 81b is turned on only when it is desired to display a stereoscopic image and separates the incident time. When the flat image is to be displayed, the parallax barrier 81b is turned off so that the incident time can be passed without being separated have.

Meanwhile, the stereoscopic image display methods described above are for illustrating embodiments of the present invention, and the present invention is not limited thereto. The present invention can display stereoscopic images using binocular parallax using various methods in addition to the above-described methods.

FIG. 4 is a conceptual diagram for explaining in detail the principle of forming a stereoscopic image using the lenticular lens array shown in FIG. 2.

Referring to FIG. 4, binocular disparity occurs because the left eye and the right eye of a person are spaced apart by a predetermined interval as described above. I feel it. In order to maximize the stereoscopic recognition effect according to the binocular parallax, a lenticular sheet is often used.

The principle of stereoscopic image formation using a lenticular sheet is based on a binocular parallax characteristic of a person, by attaching a lenticular lens corresponding to one left and right interval in front of patterns in which left and right images can be displayed. By making only the left and right patterns different from each other, the three-dimensional feel is made.

As shown in FIG. 4, in the lenticular sheet in which the hemispherical lens layer 20 is formed on the top and the pattern layer 10 is formed periodically, the period of the pattern and the hemispherical lens are properly matched. In other words, the left eye and the right eye recognize different patterns, and accordingly, the brain recognizes the stereoscopic image by properly combining the images recognized from the left eye and the right eye.

Here, although the lenticular sheet is shown very simply, the lenticular sheet has a more complicated structure, and in general, transparent layers including an upper lens layer except for a pattern layer are called lenticular sheets. Since the specific structure of the lenticular sheet corresponds to the related art, a detailed description thereof will be omitted.

Hereinafter, an example of a liquid crystal array for displaying 2D or 3D images in a display panel of a mobile terminal according to an embodiment of the present invention will be described with reference to FIGS. 5 to 6.

5 to 6, the display unit 151 of the mobile terminal 100 according to an embodiment of the present invention includes a display panel 10 for displaying a stereoscopic image by arranging a plurality of pixels. It may include a lens layer 30 for transmitting the image projected from the display panel 10 and a driver 50 for applying an electric field to change the arrangement of the liquid crystal (Liquid Crystal) injected between the transparent electrode (ITO). .

The liquid crystal injected between the transparent electrode ITO is a material having an intermediate property between a solid and a liquid, and rotates the liquid crystal by applying an electric field from the outside through the transparent electrode. Thereby, the shutter function which makes light pass or does not pass can be utilized.

Referring to FIG. 5, when the electric field is not applied to the transparent electrode ITO through the driving unit 50, the liquid crystals LC are arranged to pass all the light projected from the display panel 10.

Referring to FIG. 6, the display panel 10 may include left eye image output units 11a and 12a and right eye image output units 11b and 12b arranged to display stereoscopic vision.

The first left eye image output unit 11a and the first right eye image output unit 11b may be arranged side by side, and the second left eye image output unit 11b and the second right eye image output unit 12b may be arranged side by side. have.

The driver 50 may change the arrangement of the liquid crystal LC by applying a predetermined electric field to the transparent electrode ITO. The driver 50 inputs the image output from the left eye image output units 11a and 12a into the left eye of the user and inputs the image output from the right eye image output units 11b and 12b into the user's right eye. The arrangement of the liquid crystals LC constituting the liquid lens layer 40 can be controlled.

The liquid lens layer 40 has a predetermined liquid crystal LC to correspond to the first left and right image output unit 11 and the second left and right image output unit 12 among the plurality of liquid crystals LC between the transparent electrodes ITO. ).

The liquid crystals included and arranged in the liquid lens layer 40 may display images projected by the left eye image output units 11a and 12a and the right eye image output units 11b and 12b by an electric field applied by the driver 50. The liquid crystal array is maintained to be refracted to reach the left and right eyes of the user.

The liquid lens layer 40 may include a first liquid lens 41 disposed at a position corresponding to the first left and right image output unit 11, and a second disposed second position corresponding to the second left and right image output unit 12. Liquid lens 42.

In addition, the liquid lenses 41 and 42 may each maintain a shape in which a part of a cylinder or an elliptical column is terminated by the liquid crystal array therein.

7 is a diagram illustrating the structure of a display panel of a mobile terminal according to an embodiment of the present invention in more detail.

Referring to FIG. 7, the display unit 151 may include a display panel 200 and a lenticular lens array 300.

The display panel 200 includes a left eye image output pixel 201 and a right eye image output pixel 202 arranged to display a stereoscopic image. The left eye image output unit 201 and the right eye image output unit 202 may include a surface 204 arranged to be in parallel with each other. Further, predetermined patterns 203a and 203b are provided at both ends 205a and 206a of each pixel 201 and 202.

The left eye image output unit 201 and the right eye image output unit 202 project the left eye image and the right eye image, respectively, in the direction of the lenticular lens array 300.

The image output from the left eye image output unit 201 and the right eye image output unit 203 is different from the image projected from the patterns 203a and 203b.

The lenticular lens array 300 is disposed on the front surface of the display panel 200 and includes lenses 301, 302a, and 302b corresponding to at least one pattern constituting the display panel 200.

The lenticular lens array 300 may include the first lens unit 301 corresponding to the left eye image output unit 201 and the right eye image output unit 202, and the second lens units 302a and 303a respectively corresponding to the pattern 203a Min pattern 203b. ).

Each lens may include a liquid crystal LC having a different arrangement structure. Accordingly, the image projected from the left eye image output unit 201 may be input into the left eye and the image projected from the right eye image output unit 202 may be input into the right eye by the arrangement of the liquid crystals LC. The image projected from the pattern 203a on the left side of the left eye image output unit 201 is projected to the outside of the second lens units 302a and 302b.

Accordingly, the third party, which is located at the left or right point of the user U and is located at a position which is opened at a predetermined angle or more from the vertical direction of the display unit 151 of the mobile terminal 100, is output to the left eye image output unit 201. And the image projected by the right eye image output unit 202 may not be viewed.

In addition, the third person may view an image projected from the patterns 203a and 203b disposed at the outside of each of the left eye image output unit 201 and the right eye image output unit 202.

FIG. 8 is a diagram illustrating a path of light projected from a display panel according to the structure of the display unit illustrated in FIG. 7.

Referring to FIG. 8, the images projected by the left eye image output unit 201 and the right eye image output unit 202 are input to the first lens unit 301 into the left and right eyes of the user.

The image projected from the first pattern 203a is refracted through the lens 302a to the outside of the predetermined angle θ based on the vertical direction of the display unit 151. Accordingly, the first user EYE1 can see the image projected from the first pattern 203a.

In addition, the image projected in the pattern 203b is refracted by the lens 302b to the outside of a predetermined angle θ or more based on the vertical direction of the display unit 151. Accordingly, the second user EYE 2 can see the image projected from the second pattern 203b.

The first user EYE1 and the second user EYE2 cannot see the image output through the left eye image output unit 201 and the right eye image output unit 202 of the display panel 200.

Accordingly, when the 3D image viewed by the user through the left eye image output unit 201 and the right eye image output unit 202 is an image including personal information, the first pattern 203a provided in the display panel 200. ) And the second pattern 203b can protect privacy.

That is, when providing privacy-sensitive information such as personal information in a 3D image, the 3D image may be displayed by preventing the personal information, etc., from being displayed to a user located at a point separated by a predetermined angle or more from the display of the mobile terminal. Provide privacy at the same time.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings. In addition, the embodiments described in this document can be applied to not only the present invention, but also all or some of the embodiments may be selectively combined so that various modifications can be made.

100: mobile terminal 151: display unit
200: display panel 201: left eye pixel
202: Right eye pixel 203a: First pattern
203b: Second Pattern 300: Lenticular Lens Array
301: first liquid lens 302a: second liquid lens
302b: third liquid lens

Claims (8)

A display unit;
And a controller configured to provide a control signal to the display unit.
The display unit includes:
A left and right image output unit configured to output a left eye image and a right eye image for displaying stereoscopic vision;
A pattern output unit disposed at both ends of the left and right image output units to output a predetermined pattern;
A first lens unit provided at a position corresponding to a front surface of the left and right image output units and the left and right image output units; And
A second lens unit provided at a position corresponding to the front surface of the pattern output unit and the pattern output unit;
Mobile terminal including The method of claim 1,
And a driver configured to adjust the refractive index of the first lens unit such that the image output from the pattern output unit is refracted to the outside based on the vertical direction of the display unit.
The control unit controls the drive unit. The method of claim 1,
The first lens unit and the second lens unit comprises a columnar lens. The method of claim 3, wherein
The column-shaped liquid lens is a mobile terminal, characterized in that the lens formed by terminating a portion of the cylinder or ellipse column. The method of claim 1,
And a refractive index of the lenses configuring the first lens unit and the second lens unit is predetermined. The method of claim 5, wherein
The left and right image output unit includes a left eye image output unit for outputting the left eye image and a right eye image output unit arranged in parallel with the left eye image output unit and outputting the right eye image,
The refractive index of the lens constituting the first lens unit refracts the left eye image in the left visual field direction, and the right eye image in the right visual field direction. The method of claim 5, wherein
The refractive index of the lens constituting the second lens unit, the mobile terminal, characterized in that for refracting the image output from the pattern output unit in the vertical direction in the vertical direction of the display unit. The method of claim 1,
The image output from the pattern output unit is a mobile terminal, characterized in that the image is irrelevant to the stereoscopic image output from the left and right image output unit.

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