KR20150125409A - Image display device and method thereof - Google Patents

Abstract

The present invention relates to an image display device having a flexible display unit capable of changing a curvature. The image display device comprises: a sensing unit for sensing a position of a user; a flexible display unit having any one state from a first state having a finite curvature radius and a second state having an infinite curvature radius; a driving unit disposed on a rear surface of the flexible display unit, and applying strength onto a rear surface of the flexible display unit to change a curvature radius of the flexible display unit; and a control unit for controlling the driving unit, so the flexible display unit can have any one of the first and second states according to whether the user is disposed in a predetermined region based on the flexible display unit. The flexible display unit has a first state having a finite curvature radius when the user is disposed in a predetermined region. When the user is disposed outside of the predetermined region, the flexible display unit has a second state having an infinite curvature radius. When the flexible display unit is in a first state, the control unit controls the driving unit, so a curvature radius of the flexible display unit corresponds to a curvature radius based on a relative distance of the user with the display unit.

Description

IMAGE DISPLAY APPARATUS AND CONTROL METHOD THEREOF

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an image display apparatus having a flexible display unit capable of varying a curvature.

The video display device includes both a device for receiving and outputting a broadcast, a device for recording and reproducing video, and a device for recording and reproducing audio. Such a video display device includes, for example, a television, a monitor, a projector, a tablet, and the like.

As the functions of the video display device are diversified, the video display device is implemented in the form of a multimedia player having multiple functions such as photographing, video shooting, game, and broadcast reception in addition to the output of the broadcast and the playback of the video .

Various new attempts have been made in terms of hardware or software for supporting and increasing the function of such image display devices. As an example of structural changes and improvements, various studies and proposals have been actively made on a video display device having a flexible display portion whose shape is variable.

On the other hand, the conventional flexible display unit has a finite radius of curvature, so that there is a drawback that the feeling of immersion of the image is lowered depending on the viewing position. Therefore, there is a need to solve the disadvantage that the degree of immersion of the image is less than that of the flat display unit according to the viewing position of the user.

An object of the present invention is to provide a user with an image display apparatus having a flexible display unit which can be varied with a plurality of curvature radii.

It is still another object of the present invention to provide a method of changing a radius of curvature of a flexible display unit based on various conditions.

It is another object of the present invention to provide images at various curvature radii according to viewing positions.

The present invention relates to an image display apparatus having a flexible display unit capable of varying a curvature, comprising a sensing unit for sensing a position of a user, a first state having a finite radius of curvature, and a second state having a radius of curvature of infinity A driving unit disposed on a rear surface of the flexible display unit to apply a force to a rear surface of the flexible display unit to change a radius of curvature of the flexible display unit, And a control unit controlling the driving unit such that the state of the flexible display unit is either the first state or the second state depending on whether the flexible display unit is positioned within the predetermined area, To Has a first state and has a second state having an infinite radius of curvature when the user is located outside a predetermined region, and wherein the controller controls the curvature radius of the flexible display portion And controls the driving unit to correspond to a radius of curvature based on the relative distance between the flexible display unit and the user.

In one embodiment, the sensing unit senses the position of the user at a predetermined time interval or in real time, and the control unit controls the position of the user while the flexible display is operating in a first state having a finite radius of curvature, And switches the flexible display unit to operate in the second state when it is detected that the flexible display unit is located outside the set area.

In one embodiment, the controller controls the driving unit so that the curvature radius of the flexible display unit has an infinite radius of curvature when the flexible display unit is switched to the second state.

In one embodiment, the apparatus further includes a memory unit for storing mapping information mapping different curvature radii according to a relative distance, wherein when the flexible display unit operates in a first state having a finite radius of curvature, The controller detects the relative distance between the user and the flexible display unit using the position of the user detected by the sensing unit and controls the driving unit so that the flexible display unit has a radius of curvature mapped to the detected relative distance.

In one embodiment, the controller determines a radius of curvature of the flexible display unit based on a preset condition when it is detected that a plurality of users are located in the predetermined area.

In one embodiment, when the plurality of users are located at the same relative distance from the flexible display unit, the controller measures a distance between the plurality of users, calculates a radius of curvature based on a center point of the distance, When the plurality of users are located at different relative distances from the flexible display unit, the radius of curvature is calculated based on any one of the plurality of users.

In one embodiment, when the at least one user of the plurality of users is detected to be located outside the predetermined area, at least one user located outside the predetermined area may be considered as a consideration target when calculating the radius of curvature of the flexible display unit The radius of curvature is calculated in consideration of the at least one user and the user located in the predetermined area among the plurality of users. If the radius of curvature is not considered as a result of the determination, A radius of curvature is calculated in consideration of a user located in a predetermined area among the plurality of users.

In one embodiment of the present invention, when the at least one user located outside the preset area is a candidate for consideration in calculating the radius of curvature, the controller may further calculate a radius of curvature calculated using the position of the user located in the preset area And the driving unit is controlled to have a large radius of curvature.

In one embodiment, the control unit operates the flexible display unit in a second state when the detected plurality of users is located outside a preset area, and controls the driving unit such that the radius of curvature of the flexible display unit is infinite .

In one embodiment, the controller calculates a radius of curvature of the flexible display unit according to a user's selection.

In one embodiment, the sensing unit senses the movement of the user, and when the movement of the user coincides with the predetermined gesture, the control unit controls the curvature radius of the flexible display unit to be a radius of curvature based on the predetermined gesture. And controls the driving unit.

In one embodiment, the apparatus further includes a memory unit for storing user information related to the user, wherein the controller identifies a user sensed through the sensing unit using the user information, and determines a radius of curvature of the flexible display unit, And the driving unit is controlled to have a radius of curvature mapped to the user information.

In one embodiment, when the user sensed through the sensing unit is identified, the control unit outputs at least one image for recommending a radius of curvature according to the previously stored viewing position to one area of the flexible display unit based on the identified user information .

In one embodiment, the controller is configured to control the driving unit such that, when one of the at least one image is selected, the curvature radius of the flexible display unit has a radius of curvature recommended by the selected one of the images .

According to an embodiment of the present invention, there is provided an image display apparatus including an illuminance sensing unit for sensing an ambient illuminance, wherein when the flexible display unit is operated in the first state, a curvature radius of the flexible display unit Is calculated.

In one embodiment, when the predetermined time elapses after the flexible display unit is operated in the first state, the control unit controls the locking state in which the radius of curvature of the flexible display unit is not changed independently of the position of the user, .

In one embodiment, when the user enters the locked state, the controller outputs a graphic object indicating that the user's location has been changed to one area of the flexible display unit, .

In one embodiment, when the graphic object is selected, the control unit switches the lock state to an unlock state in which the curvature of the flexible display unit is changeable, and when the curvature radius of the flexible display unit enters the unlock state, The radius of curvature based on the changed position of the user is changed.

In one embodiment, the control unit is configured such that the flexible display unit operates in the first state, and the radius of curvature of the flexible display unit is changed so that the radius of curvature of the flexible display unit has a radius of curvature based on the relative position of the user and the flexible display unit The display unit outputs notification information indicating that the radius of curvature of the flexible display unit is being changed.

In one embodiment, the notification information is output in at least one of a visual, tactile, and auditory manner.

In one embodiment, at least one graphic object is displayed on the flexible display unit, and the controller changes a display position of the graphic object according to a radius of curvature of the flexible display unit.

According to another aspect of the present invention, there is provided a method of controlling an image display apparatus including the steps of detecting a position of a user, detecting whether the user is located within a predetermined area, determining whether the user is located within a predetermined area And controlling the flexible display unit to operate in any one of a first state having a finite radius of curvature and a second state having an infinite radius of curvature, The flexible display unit is operated in a first state having a finite radius of curvature and the flexible display unit is operated in a second state having an infinite radius of curvature when the user is located outside a predetermined area.

The present invention can solve the disadvantage that the viewing position of the user is restricted in the flexible display unit 140 having only a predetermined radius of curvature in the flexible display unit 140 having various curvature radii.

In addition, the present invention can broaden the audiovisual angle of a user and provide a more immersive image by changing the radius of curvature in accordance with various conditions in a video display device having a flexible display portion having a variable radius of curvature.

In addition, the present invention can detect a current curvature radius of a flexible display unit having a variable radius of curvature, and recommend a viewing position to a user according to the radius of curvature.

1 is a block diagram showing an image display apparatus and a remote control apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a modified display of a flexible display unit in an image display apparatus 100 according to an embodiment of the present invention.
FIG. 3 is a perspective view of the image display apparatus shown in FIG. 2; FIG.
FIG. 4 is a flowchart illustrating a control method of determining the radius of curvature of the flexible display unit 140 in the image display apparatus 100. FIGS. 5A and 5B are conceptual diagrams illustrating the control method of FIG.
FIGS. 6, 7A, 7B, 8A, 8B, and 9 are conceptual diagrams illustrating a method of calculating a radius of curvature of a flexible display unit when a plurality of users are sensed.
10A and 10B are conceptual diagrams illustrating a method of receiving a request from a user.
11A, 11B, and 11C are conceptual diagrams illustrating a method of determining at least one of a radius of curvature and a viewing position according to a viewing position of a user.
12A and 12B are conceptual diagrams illustrating a control method of the video display device operating in the locked state.
13A, 13B, and 13C are conceptual diagrams illustrating a method of setting a function related to the radius of curvature of the flexible display unit 140. FIG.
14A and 14B are conceptual diagrams illustrating a display state of a video and a graphic object displayed on the flexible display unit according to the radius of curvature of the flexible display unit.

Hereinafter, a video display device according to the present invention will be described in detail with reference to the drawings.

In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. Furthermore, the singular < RTI ID = 0.0 > terms < / RTI > used herein include plural referents unless the context clearly dictates otherwise. 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 video display device related to the present invention includes both a device for receiving and outputting a broadcast, a device for recording and reproducing video, and a device for recording and reproducing audio. Hereinafter, as an example of this, a television will be described as an example.

1 is a block diagram showing a video display device 100 and a remote control device 121a according to the present invention.

1, an image display apparatus 100 includes a tuner 110, a demodulating unit 111, an external device interface unit 122, a network interface unit 123, a storage unit 130, a user input interface unit A control unit 180, a flexible display unit 140, a driving unit 150, an audio output unit 124, a power supply unit 190, and a 3D viewing device 140a.

The tuner 110 selects a channel selected by the user or an RF broadcast signal corresponding to all previously stored channels among RF (Radio Frequency) broadcast signals received through the antenna. Also, the selected RF broadcast signal is converted into an intermediate frequency signal, a baseband image, or a voice signal.

For example, if the selected RF broadcast signal is a digital broadcast signal, it is converted into a digital IF signal (DIF). If the selected RF broadcast signal is an analog broadcast signal, it is converted into an analog baseband image or voice signal (CVBS / SIF). That is, the tuner 110 can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner 110 can be directly input to the controller 180. [

Also, the tuner 110 can receive RF carrier signals of a single carrier according to an Advanced Television System Committee (ATSC) scheme or RF carriers of a plurality of carriers according to a DVB (Digital Video Broadcasting) scheme.

In the present invention, the tuner 110 sequentially selects RF broadcast signals of all broadcast channels stored through a channel memory function among RF broadcast signals received through an antenna, and converts the RF broadcast signals into an intermediate frequency signal, a baseband image, or a voice signal can do.

The demodulator 111 receives the digital IF signal DIF converted by the tuner 110 and performs a demodulation operation.

For example, when the digital IF signal output from the tuner 110 is the ATSC scheme, the demodulator 111 performs 8-VSB (8-Vestigal Side Band) demodulation. In addition, the demodulation unit 111 may perform channel decoding. For this, the demodulator 111 includes a trellis decoder, a de-interleaver, and a Reed Solomon decoder, and performs trellis decoding, deinterleaving, Decryption can be performed.

For example, when the digital IF signal output from the tuner 110 is a DVB scheme, the demodulator 111 performs COFDMA (Coded Orthogonal Frequency Division Modulation) demodulation. In addition, the demodulation unit 111 may perform channel decoding. To this end, the demodulator 111 may include a convolution decoder, a deinterleaver, a Reed-Solomon decoder, and the like to perform convolutional decoding, deinterleaving, and reed solomon decoding.

The demodulation unit 111 may perform demodulation and channel decoding and then output a stream signal TS. At this time, the stream signal may be a signal in which a video signal, a voice signal, or a data signal is multiplexed. For example, the stream signal may be an MPEG-2 TS (Transport Stream) multiplexed with an MPEG-2 standard video signal, a Dolby AC-3 standard audio signal, or the like. Specifically, the MPEG-2 TS may include a header of 4 bytes and a payload of 184 bytes.

Meanwhile, the demodulating unit 111 may be separately provided according to the ATSC scheme and the DVB scheme. That is, the ATSC demodulation unit and the DVB demodulation unit can be provided.

The stream signal output from the demodulation unit 111 may be input to the control unit 180. The control unit 180 performs demultiplexing, video / audio signal processing, and the like, and then outputs the video to the flexible display unit 140 and audio to the audio output unit 124.

The external device interface unit 122 can connect the external device and the video display device 100. [ To this end, the external device interface unit 122 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The external device interface unit 122 may be connected to an external device such as a DVD (Digital Versatile Disk), a Blu ray, a game device, a camera, a camcorder, a computer (notebook) The external device interface unit 122 transmits external video, audio, or data signals to the controller 180 of the video display device 100 through a connected external device. Also, the controller 180 can output the video, audio, or data signal processed by the controller 180 to a connected external device. To this end, the external device interface unit 122 may include an A / V input / output unit (not shown) or a wireless communication unit (not shown).

The A / V input / output unit includes a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog), a DVI Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, and the like.

The wireless communication unit can perform short-range wireless communication with other electronic devices. The video display device 100 is connected to other electronic devices in accordance with communication standards such as Bluetooth, Radio Frequency Identification (RFID), IrDA (Infrared Data Association), UWB (Ultra Wideband), ZigBee, Can be connected.

Also, the external device interface unit 122 may be connected to the various set-top boxes via at least one of the various terminals described above to perform input / output operations with the set-top box.

Meanwhile, the external device interface unit 122 can transmit and receive data to and from the 3D viewing apparatus 140a.

The network interface unit 123 provides an interface for connecting the video display device 100 to a wired / wireless network including the Internet network. The network interface unit 123 may include an Ethernet terminal or the like for connection to a wired network and may be a WLAN (Wireless LAN, Wi-Fi), a Wibro (wireless broadband) , World Interoperability for Microwave Access (Wimax), and HSDPA (High Speed Downlink Packet Access) communication standards.

The network interface unit 123 can receive, via the network, contents or data provided by the Internet or a content provider or a network operator. That is, it can receive contents such as movies, advertisements, games, VOD, broadcasting signals, and the like, provided from a contents provider through a network. In addition, the update information and the update file of the firmware provided by the network operator can be received. It may also transmit data to the Internet or a content provider or network operator.

The network interface unit 123 is connected to, for example, an IP (Internet Protocol) TV, receives the processed video, audio, or data signals from the settop box for IPTV and controls the controller 180 And can transmit signals processed by the control unit 180 to the IPTV set-top box.

The IPTV may include ADSL-TV, VDSL-TV, FTTH-TV and the like depending on the type of the transmission network. The IPTV may include a TV over DSL, a video over DSL, a TV over IP ), And the like. In addition, IPTV may also mean an Internet TV capable of accessing the Internet, or a full browsing TV.

The storage unit 130 may store a program for each signal processing and control in the control unit 180 or may store a signal-processed video, audio, or data signal.

In addition, the storage unit 130 may perform a function for temporarily storing video, audio, or data signals input to the external device interface unit 122. [ In addition, the storage unit 130 may store information on a predetermined broadcast channel through a channel memory function such as a channel map.

The storage unit 130 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) RAM, ROM (EEPROM, etc.), and the like. The image display apparatus 100 may reproduce and provide a file (a moving image file, a still image file, a music file, a document file, etc.) stored in the storage unit 130 to a user.

FIG. 1 illustrates an embodiment in which the storage unit 130 is provided separately from the control unit 180, but the scope of the present invention is not limited thereto. The storage unit 130 may be included in the controller 180.

The user input interface unit 121 transmits a signal input by the user to the controller 180 or a signal from the controller 180 to the user.

For example, the user input interface unit 121 may be configured to turn on / off the power, select the channel, and set the screen from the remote control device 121a according to various communication methods such as a radio frequency (RF) communication method and an infrared Or may transmit a signal from the control unit 180 to the remote control device 121a.

Also, for example, the user input interface unit 121 can transmit a user input signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a set value to the controller 180.

For example, the user input interface unit 121 may transmit a user input signal input from a sensing unit 125 that senses a user's gesture to the control unit 180, (125). Here, the sensing unit 125 may include a touch sensor, a voice sensor, a position sensor, an operation sensor, and the like.

The control unit 180 demultiplexes the input stream or processes the demultiplexed signals through the tuner 110 or the demodulation unit 111 or the external device interface unit 122 to output a signal for video or audio output Can be generated and output.

The video signal processed by the controller 180 is input to the flexible display unit 140 and can be displayed as an image corresponding to the video signal. In addition, the image signal processed by the controller 180 may be input to the external output device through the external device interface 122.

The audio signal processed by the control unit 180 may be output to the audio output unit 124 as an audio signal. The voice signal processed by the control unit 180 may be input to the external output device through the external device interface unit 122. Although not shown in FIG. 1, the controller 180 may include a demultiplexer, an image processor, and the like.

In addition, the control unit 180 can control the overall operation of the image display apparatus 100. For example, the control unit 180 may control the tuner 110 to select a channel selected by the user or an RF broadcast corresponding to a previously stored channel.

The control unit 180 may control the image display apparatus 100 by a user command or an internal program input through the user input interface unit 121. [

For example, the control unit 180 controls the tuner 110 so that a signal of a selected channel is input according to a predetermined channel selection command received through the user input interface unit 121. Then, video, audio, or data signals of the selected channel are processed. The control unit 180 can output the video or audio signal processed by the user through the flexible display unit 140 or the audio output unit 124.

The controller 180 may control the operation of the external device via the external device interface unit 122 according to an external device video playback command received through the user input interface unit 121. For example, So that the video signal or the audio signal can be output through the flexible display unit 140 or the audio output unit 124.

Meanwhile, the control unit 180 may control the flexible display unit 140 to display an image. For example, the broadcast image input through the tuner 110, the external input image input through the external device interface unit 122, the image input through the network interface unit 123, or the image stored in the storage unit 130 To be displayed on the flexible display unit 140.

At this time, the image displayed on the flexible display unit 140 may be a still image or a moving image, and may be a 2D image or a 3D image.

On the other hand, the control unit 180 generates a 3D object for a predetermined object among the images displayed on the flexible display unit 140, and displays the 3D object. For example, the object may be at least one of a connected web screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, moving images and text.

The 3D object may be processed to have a depth different from that of the image displayed on the flexible display unit 140. The 3D object may be processed so as to be protruded compared to the image displayed on the flexible display unit 140. [

On the other hand, the control unit 180 recognizes the position of the user based on the image photographed from the photographing unit (not shown). For example, the distance (z-axis coordinate) between the user and the image display apparatus 100 can be grasped. In addition, the x-axis coordinate and the y-axis coordinate in the video display device 100 corresponding to the user position can be grasped.

Although not shown in the drawing, a channel browsing processing unit for generating a channel signal or a thumbnail image corresponding to an external input signal may be further provided. The channel browsing processing unit receives the stream signal TS output from the demodulation unit 111 or the stream signal output from the external device interface unit 122 and extracts an image from an input stream signal to generate a thumbnail image have. The generated thumbnail image can be directly or encoded and input to the controller 180. In addition, the generated thumbnail image may be encoded in a stream format and input to the controller 180.

The control unit 180 may display a thumbnail list having a plurality of thumbnail images on the flexible display unit 140 using the inputted thumbnail images. At this time, the thumbnail list may be displayed in a simple viewing mode displayed on a part of the area in a state where a predetermined image is displayed on the flexible display unit 140, or in a full viewing mode displayed in most areas of the flexible display unit 140 have.

The flexible display unit 140 converts a video signal, a data signal, an OSD signal, a control signal processed by the control unit 180 or a video signal, a data signal, a control signal, etc. received from the external device interface unit 122, .

In the present invention, it is exemplified that the flexible display unit 140 is configured to be deformable into a flat shape or a curved shape. When the flexible display unit 140 is transformed into a curved shape as if it surrounds a user on the front side, a realistic image quality and immersion can be provided to the user. Such a flexible display can be implemented, for example, by an OLED panel.

The flexible display unit 140 may be configured to provide a three-dimensional image to the user. The flexible display unit 140 may be divided into an additional display mode and a single display mode for three-dimensional video viewing.

In the single display method, a 3D image can be implemented by the flexible display unit 140 alone without using a separate 3D viewing apparatus 140a, for example, 3D glasses, and examples thereof include a lenticular system, a parallax barrier parallax barrier) can be applied.

In addition, the additional display method can implement a 3D image using the 3D viewing apparatus 140a in addition to the flexible display unit 140. For example, various methods such as a head mount display (HMD) type and a glasses type can be applied have. In addition, the glasses type can be further divided into a passive type such as a polarizing glasses type and an active type such as a shutter glass type. On the other hand, head-mounted display type can be divided into a passive type and an active type.

Meanwhile, the flexible display unit 140 may include a touch screen and may be used as an input device in addition to the output device.

The drive unit 150 is formed to deform the flexible display unit 140 into a flat shape or a curved shape. The driving unit 150 may be configured to deform the flexible display unit 140 by applying a physical force to the flexible display unit 140 directly or indirectly.

The audio output unit 124 receives a voice-processed signal, for example, a stereo signal, a 3.1 channel signal, or a 5.1 channel signal from the control unit 180, and outputs the voice. The audio output unit 124 may be implemented by various types of speakers.

As described above, the image display apparatus 100 may further include a sensing unit 125 having at least one of a touch sensor, a voice sensor, a position sensor, and an operation sensor. The signal sensed by the sensing unit 125 is transmitted to the controller 180 through the user input interface unit 121.

The sensing unit 125 may sense at least one of the gesture of the user and the position of the user. For example, the sensing unit 125 may be a camera or a camcorder. At this time, when the controller 180 transmits the image (or the sensed signal) received from the camera to the controller 180, the controller 180 can determine the position or the gesture of the user through the image (or the sensed signal).

The power supply unit 190 supplies corresponding power to the video display device 100. Particularly, a control unit 180, which can be implemented as a system on chip (SOC), a flexible display unit 140 for displaying an image, and an audio output unit 124 for audio output, . Further, according to the embodiment, power can be supplied to the heat generating portion including the heat ray.

The remote control device 121a transmits the user input to the user input interface unit 121. [ To this end, the remote controller 121a can use infrared (IR) communication, radio frequency (RF) communication, Bluetooth, ultra wideband (UWB), or ZigBee. Also, the remote controller 121a can receive the video, audio, or data signal output from the user input interface unit 121 and display it or output it by the remote controller 121a.

The video display device 100 described above is a fixed type and is a digital broadcast of ATSC system (8-VSB system), digital broadcast of DVB-T system (COFDM system), digital broadcast of ISDB-T system (BST- And may be a digital broadcast receiver capable of receiving at least one. In addition, as a portable type, digital terrestrial DMB broadcasting, satellite DMB broadcasting, ATSC-M / H broadcasting, DVB-H broadcasting (COFDM broadcasting), MediaFoward Link Only And a digital broadcasting receiver capable of receiving at least one of digital broadcasting and the like. It may also be a digital broadcast receiver for cable, satellite communications, or IPTV.

Meanwhile, the video display device described in this specification includes a TV receiver, a mobile phone, a smart phone, a notebook computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player) .

Meanwhile, the block diagram of the image display apparatus 100 shown in FIG. 1 is a block diagram for an embodiment of the present invention. Each component of the block diagram may be integrated, added, or omitted according to the specifications of the image display apparatus 100 actually implemented. That is, two or more constituent elements may be combined into one constituent element, or one constituent element may be constituted by two or more constituent elements, if necessary. In addition, the functions performed in each block are intended to illustrate the embodiments of the present invention, and the specific operations and apparatuses do not limit the scope of the present invention.

Hereinafter, a video display device 100 including at least one of the above-described components will be described.

FIG. 2 is a perspective view showing a modified display of a flexible display unit in an image display apparatus 100 according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the image display apparatus shown in FIG.

2 and 3, the image display apparatus 100 includes at least a flexible display unit 140, a pressing member 160, a driving unit 150, a control unit 170, and a curvature sensing unit (not shown) One.

The flexible display unit 140 is formed to be bent by an external force between a first state and a second state in which degree of warpage is different. For example, the first state may be a flat display state of the flexible display unit 140, and the second state may be a state where the flexible display unit 140 is curved in a curved shape. On the other hand, in the first state and the second state, the flexible display unit 140 can also be understood to have different curvature radii.

When the flexible display unit 140 receives an external force and is bent so as to surround a user (viewer) on the front face, a realistic image quality and a feeling of immersion can be provided to the user. In addition, the flexible display unit 140 curved in a curved shape can be restored to a flat state by an external force.

The flexible display unit 140 includes a panel (not shown) and a support member 141 for supporting the panel. The panel is constituted by a bendable panel (for example, an OLED panel), and the support member 141 covers the backside of the panel and is configured to be deformable together with the panel. The support member 141 is preferably made of a material capable of being subjected to a predetermined elastic deformation (for example, stainless steel, titanium, carbon fiber, or the like).

The pressing member 160 is mounted on the back surface of the flexible display unit 140 and exerts an external force on the flexible display unit 140 by warping. As shown in FIG. 2, the pressing member 160 may be a bar-shaped plate extending to the left and right of the flexible display unit 140 about the driving unit 150. The pressing member 160 may be formed in a shape different from that shown in Fig.

One end of the pressing member 160 is coupled to the left or right end of the flexible display unit 140 and the other end is coupled to the control unit 170 connected to the driving unit 150. The control unit 170 is disposed on the rear surface of the flexible display unit 140 so that the pressing member 160 is positioned on the flexible display unit 140 even when the flexible display unit 140 is in a flat state. It may be bent to some extent toward the front side.

It is preferable that a plurality of pressing members 160 are provided for stable driving. For example, the plurality of pressing members 160 may be disposed on the upper side and the lower side of the flexible display unit 140, respectively.

The deformation restricting portion 161 is disposed between the end of the pressing member 160 and the adjusting unit 170. [ The deformation restricting portion 161 is coupled to the flexible display portion 140 while covering the pressing member 160. [ The deformation restricting portion 161 restricts the pressing member 160 from moving away from the back surface of the flexible display 140 in the process of bending. On the other hand, the deformation restricting unit 161 can be added or removed depending on circumstances, unless it is an essential component.

When the adjusting unit 170 moves in a direction away from the driving unit 150, the pressing member 160 applies an external force to the back surface of the flexible display unit 140 while at least a part of the pressing member 160 is bent. In this process, if there is no deformation restricting portion 161, the pressing member 160 may be distant from the back surface of the flexible display unit 140, but may not apply an external force to the flexible display unit 140. The deformation restricting portion 161 restricts deformation of the pressing member 160 to prevent such a phenomenon.

The driving unit 150 is configured to push or pull the pressing member 160 to implement the bending of the pressing member 160. The pressing member 160 is pushed, bent, or pulled back so that the flexible display unit 140 can be deformed between the first state and the second state.

Specifically, when the drive unit 150 pushes the pressing member 160, the pressing member 160 becomes more warped than before. As a result, the pressing member 160 presses the left or right side of the flexible display unit 140, so that the flexible display unit 140 in a flat state can be bent in a curved shape.

Conversely, when the driving unit 150 pulls the pressing member 160, the pressing member 160 is restored to a state in which the pressing member 160 is less bent (that is, a relatively flat state than before). In this process, the flexible display unit 140 curved in a curved shape is pulled and restored to a flat state according to the restoration of the pressing member 160.

The adjustment unit 170 is configured to be movable to move away from or close to the drive unit 150 to connect the pressure member 160 and the drive unit 150 and to control the bending of the press member 160. When the adjusting unit 170 is moved away from the driving unit 150, the pressing member 160 connected to the adjusting unit 170 is pushed laterally to be bent more than before and the adjusting unit 170 is moved to the driving unit 150 The pressing member 160 connected to the adjusting unit 170 is pulled and restored.

The movement of the adjustment unit 170 may occur by driving the drive unit 150 or by rotating the adjustment unit 170. [ The movement of the adjustment unit 170 by the driving of the driving unit 150 implements the variable driving of the flexible display unit 140 and the movement of the adjustment unit 170 by the turning operation of the adjustment unit 170 is performed by the flexible display 170. [ The degree of bending of the portion 140 can be corrected.

The curvature sensing unit (not shown) may sense the degree of flexing of the flexible display unit 140 by the driving unit 150. For example, the curvature sensing unit (not shown) may be a linear sensor, an infrared sensor, an ultrasonic sensor, or the like.

That is, the curvature sensing unit (not shown) measures the distance the flexible display unit 140 moves at the reference position when the flexible display unit 140 is bent, based on the force applied by the driving unit, Or the degree of curvature of the flexible display unit 140 can be indirectly measured according to the position of the control unit 170. [ For example, the curvature sensing unit (not shown) may transmit different electrical signals to the controller 180 according to the position of the adjustment unit 170. [

The control unit 180 can determine whether the flexible display unit 140 is further bent or flatter based on the degree of curvature of the flexible display unit 140 detected by the curvature sensing unit (not shown). In this case, the driving unit 150 can determine whether to apply or not apply the force to the flexible display unit 140 under the control of the control unit 180.

That is, the image display apparatus 100 according to an embodiment of the present invention further includes the curvature sensing unit (not shown), so that the radius of curvature of the current flexible display unit 140 can be known, (140) can be controlled to have various curvature radii.

FIG. 3 is an exploded perspective view of the image display apparatus 100 shown in FIG. 2. FIG.

The flexible display unit 140 is formed to be able to bend, and the flexible display unit 140 can be implemented in various ways. For example, the flexible display unit 140 may be implemented in such a manner that the display panel and the display cover are bent at the same time. As another example, the flexible display unit 140 may be implemented in such a manner that the display panel is deflected from the fixed display cover. These methods will be described below in order.

3, the display panel may include an OLED (Organic Light Emitting Diode) panel 141. FIG. The OLED panel 141 is bonded to the display cover 143 by the adhesive portion 142. The display cover 143 is disposed on the back surface of the OLED panel 141 and the adhesion portion 142 is disposed between the OLED panel 141 and the display cover 143. The OLED panel 141, the adhesive portion 142, and the display cover 143 may be formed in substantially the same shape. The flexible display unit 140 shown in FIG. 3 is a system in which the OLED panel 141 and the display cover 143 are simultaneously bent.

3, the display panel may include a liquid crystal display (LCD) panel. Unlike the OLED panel 141, the LCD panel does not emit light itself, and thus requires a separate backlight unit. An LED (Light Emitting Diode) may be used as the backlight unit. The flexible display unit 140 of this type is a method in which the display panel is bent away from the fixed display cover.

The technical idea to be implemented in the present invention can be applied not only to the above-described two implementations but also to all possible types of flexible display units 140. For the sake of convenience of explanation, the following description will be made on the assumption that the display panel and the display cover 143 are bent at the same time.

The driving unit 150 may be installed on the rear surface of the display cover 143. The adjustment unit 170 is installed on both sides of the pressing member 160, respectively. The pressure member 160 extends from the adjustment unit 170 and the end of each pressure member 160 is coupled to the back surface of the display cover 143. [

The control unit 170 is moved away from the driving unit 150 by the driving force generated by the driving unit 150. FIG. The pressing member 160 connected to the adjusting unit 170 also moves away from the driving unit 150 and the end of the pressing member 160 presses both sides of the display cover 143. Both sides of the display cover 143 are bent and the OLED panel 141 coupled to the display cover 143 by the adhesive portion 142 also bends together with the display cover 143. [ The process of restoring the state before the flexible display unit 140 is bent is the reverse of the process of bending.

The pressing member 160 may be directly coupled to the display cover 143 but a side bar 144 may be provided between the pressing member 160 and the display cover 143 as shown in FIG. The side bar 144 extends in the longitudinal direction to prevent the flexible display unit 140 from being warped, and is coupled to the display cover 143. The side bar 144 is coupled to the back surface of the display cover 143 and each end of the pressing member 160 can be coupled to the side bar 144.

The side bars 144 may be installed on the left and right sides of the flexible display unit 140, respectively. The sidebar 144 on the left side is engaged with the left end of the pressing member 160 and the sidebar 144 on the right side is engaged with the right end of the pressing member 160. [

The flexible display unit 140 may be curved such that the entire area has the same radius of curvature, but may be curved to have a different radius of curvature for at least a part of the area. For example, when the flexible display unit 140 is divided into two regions, the two regions may have different radii of curvature.

The image display apparatus 100 according to an embodiment of the present invention may include a plurality of sensing units 125 so that the flexible display unit 140 is bent to have different radii with respect to at least a part of the area . The control unit 180 may control the driving unit 150 such that at least a part of the flexible display unit 140 has a different radius of curvature by using the radius of curvature detected by the sensing unit 125. [ In this case, the image display apparatus 100 may include a plurality of driving units 150 that can deform at least a part of the flexible display unit 140.

Hereinafter, a method of controlling the curvature radius of the flexible display unit 140 so as to have any one of a plurality of curvature radii in the image display apparatus 100 will be described in more detail. The following description is directed to the case where the entire area of the flexible display unit 140 has the same radius of curvature. However, the present invention is not limited to this, and the same applies to the case where the radius of curvature is set for at least some areas Do.

Hereinafter, a method of controlling the radius of curvature in the image display apparatus 100 including the flexible display unit 140 having various radii of curvature will be described.

In the following video display device 100, the flexible display unit 140, the driving unit 150, and the pressing member 160 are illustrated, but this is merely a representation of the drawings, and the present invention is not limited thereto. Accordingly, in the following description, the image display apparatus 100 may be understood as an image display apparatus 100 including at least a part of the components of the image display apparatus 100 described with reference to FIGS.

 FIG. 4 is a flowchart illustrating a control method of determining the radius of curvature of the flexible display unit 140 in the image display apparatus 100. FIGS. 5A and 5B are conceptual diagrams illustrating the control method of FIG.

First, the image display apparatus 100 according to an exemplary embodiment of the present invention may perform a step of detecting a location of a user (S410).

In the video display device 100 according to an embodiment of the present invention, in order to search for the location of the user in real time or to use the power efficiently, the controller 150 controls the location of the user only when a pre- . ≪ / RTI >

Herein, the 'event' is an event in which power is supplied from the power supply unit 190 to the image display apparatus 100, an event in which the image is displayed on the flexible display unit 140, an event in which the flexible display unit 140 is bent An event in which the user's position is changed, and an event in which the preset sensing period returns when the curvature radius of the flexible display unit 140 is fixed.

The controller 180 senses the position of the user through the sensing unit (or sensing unit) 125 and determines whether the flexible display unit 140 is bent according to the sensed position of the user.

To this end, the present invention may include a sensing unit 125 for sensing the position of the user.

For example, the sensing unit 125 may be a camera capable of receiving a user's image. At this time, the controller 180 can determine the location of the user using the image received from the camera.

The plurality of cameras may be provided. In this case, the control unit 180 can more accurately determine the position of the user using the images received from the plurality of cameras.

If the location of the user is detected, the image display apparatus 100 according to an embodiment of the present invention may proceed to step S420 of determining whether the detected location of the user is within a predetermined area.

The image display apparatus 100 according to an embodiment of the present invention can determine whether the flexible display unit 140 is warped or not according to the position of the user.

For this, the controller 180 may determine whether to bend the flexible display unit 140 according to whether the position of the user sensed by the sensing unit 125 meets predetermined conditions. The predetermined condition may be set at the factory of the image display apparatus 100 or may be set by the user. For example, the predetermined condition may be various conditions such as whether the user is located in a predetermined area based on the image display device 100, the type of the image currently being played back in the image display device 100 .

Hereinafter, it will be described that the predetermined condition determines whether or not the flexible display unit 140 is bent according to whether the user's position is within a predetermined area with reference to the image display device 100, The present invention is not limited to this, and various conditions may be set by the user or preset.

Here, the preset area may be a virtual area x1 in the horizontal direction with respect to the front surface of the image display device 100. [ For example, as shown in (a) of FIG. 5A, the predetermined area may be a virtual area x1 in the horizontal direction with respect to the center of the front surface of the image display device 100. [ The size of the predetermined area may be set by the user or preset at the factory of the video display device 100. [

The controller 180 may determine whether the sensed position of the user is within the predetermined area x1. The control unit 180 may control the driving unit 150 to have the flexible display unit 140 in any one of the first and second states according to the determination result.

Here, the first state is a state in which the flexible display unit 140 has a radius of curvature of the finite band, and the second state is a state in which the flexible display unit 140 has a radius of curvature of infinity (i.e., a flat state) have. Meanwhile, the radius of curvature of the flexible display unit 140 in the first state may have a plurality of curvature radii. That is, the flexible display unit 140 in the first state can also be understood as a state capable of changing the radius of curvature.

For example, the flexible display unit 140 in the first state may be curved by an external force (for example, a force applied by a driving unit) to have any radius of curvature of a plurality of curvature radii . At this time, the flexible display unit 140 may have different radii of curvature depending on the degree of external force applied thereto.

The controller 180 may control the driving unit 150 to operate the flexible display unit 140 in the first state when the sensed position of the user is located within the predetermined area x1 ). The control unit 180 may control the driving unit 150 to operate the flexible display unit 140 in the second state when the sensed position of the user is located outside the predetermined area x1. (S432).

That is, when the image display apparatus 100 of the present invention is located within a predetermined area x1 based on the front surface of the flexible display unit 140, the image display apparatus 100 provides a more immersive image through warping of the flexible display unit 140 can do. When the video display device 100 of the present invention is located outside the predetermined area x1 on the basis of the front face of the video display device 100, the bending of the flexible display part 140 may interfere with the immersion of the video (I.e., the flexible display unit 140 is in a flat state).

Meanwhile, when the detected position of the user is within the preset area x1 and the flexible display unit 140 is in the first state, the controller 180 determines that the user's position is within the preset area x1, The flexible display unit 140 can be switched to have the second state. In this case, the controller 180 may control the driving unit 150 such that the flexible display unit 140 has an infinite radius of curvature.

Further, when the position of the user is located within the predetermined area x1 and is changed outside the preset area x1, the controller 180 does not immediately switch from the first state to the second state, It is possible to determine whether or not the position of the user returns to the predetermined area x1. That is, the controller 180 may have a period of time to determine whether the user continues to use the image display apparatus 100.

At this time, when the user's position is detected within the predetermined area x1 for the preset time, the controller 180 determines that the user continuously intends to use the image display apparatus 100, It may not switch to the second state.

When the flexible display unit 140 has the first state (S431), the image display apparatus 100 according to an exemplary embodiment of the present invention may be configured such that the radius of curvature of the flexible display unit 140 is set to a predetermined condition The controller may control the driver to have a radius of curvature based on the radius of curvature (S440).

The controller 180 calculates a radius of curvature based on a preset condition to determine a radius of curvature of the flexible display unit 140 when the flexible display unit 140 is in a first state having a radius of curvature of the fin can do.

The preset conditions include a relative distance between the user and the flexible display unit 140 and the number of users, the brightness (or illuminance) around the video display device 100, the sound output from the video display device 100 At least one of the usage pattern of the user and the user status information.

Here, the relative distance between the user and the flexible display unit 140 may be a numerical value indicating how far the user is from the front of the flexible display unit 140.

A predetermined area set on the basis of the front surface of the flexible display unit 140 is an area in the horizontal direction of the flexible display unit 140. The relative distance between the flexible display unit 140 and the user is determined by the user 140 in the longitudinal direction.

5B, the relative distance between the flexible display unit 140 and the user is measured by measuring a distance y1 in the vertical direction with respect to the front surface of the flexible display unit 140, for example, .

At this time, the present invention may further include a distance sensor for measuring the relative distance between the flexible display unit 140 and the user. Here, the distance sensor may be an infrared sensor, an ultrasonic sensor, a camera sensor, a microphone sensor (or a sound sensor), or the like.

For example, when a camera sensor is used, a plurality of cameras may be provided to measure a relative distance. At this time, the controller 180 may compare the plurality of images received from the plurality of cameras to calculate the relative distance.

In addition, the image display apparatus 100 according to an embodiment of the present invention may further include a memory unit 130 (or a storage unit) that stores a radius of curvature calculated based on the predetermined condition. For example, the memory unit 130 may store curvature radius information obtained by mapping different curvature radii according to a relative distance between the user and the flexible display unit 140. FIG.

Here, the larger the relative distance, the larger the radius of curvature may be mapped. That is, according to the present invention, the greater the relative distance between the user and the flexible display unit 140, the smaller the degree of warping of the flexible display unit 140 can be.

For example, when the relative distance is 3 m, the radius of curvature radius of 2000R is stored in the memory unit 130, and when the relative distance is 5 m, radius of curvature information of 4000 R is mapped.

When the curvature radius information is stored in the memory unit 130, the controller 180 may detect the radius of curvature mapped to the relative distance from the memory unit 130, when the relative distance is measured. In addition, the controller 180 may control the driving unit 150 such that the flexible display unit 140 has the detected radius of curvature.

For example, as shown in FIGS. 5A and 5B, when the relative distance between the user and the flexible display unit 140 is y1 (y1, y1) Distance), the radius of curvature can be controlled to be larger.

6A, 6B, and 6C will be described in more detail when the number of users detected by the sensing unit 125 is plural.

The control unit 180 can determine the radius of curvature of the flexible display unit 140 based on the ambient brightness of the image display apparatus 100 when the flexible display unit 140 is in the first state have.

For this, the image display apparatus 100 according to an embodiment of the present invention may further include an illuminance sensor 500 capable of sensing brightness.

The control unit 180 may detect the radius of curvature of the display unit according to the brightness sensed by the illuminance sensor. Also, as described above, the memory unit 130 may store curvature radius information in which different curvature radii are mapped according to the ambient illuminance. In this case, the curvature radius control of the controller 180 may be performed in a manner similar to that described above.

As another example, when the flexible display unit 140 is in the first state, the image display apparatus 100 according to an embodiment of the present invention can determine the radius of curvature based on the state information of the user stored in advance .

Here, the status information may be information indicating the height (for example, sitting key information, TV viewing posture information), the type of the program that is frequently watched, the object information (for example, Table, position of sofa, etc.).

The status information may be received from the user or may be determined according to the usage pattern of the user's image display apparatus 100. [ That is, the control unit 180 can analyze the usage pattern of the user and determine the state information. At this time, the controller 180 may control the radius of curvature based on the state information in a manner similar to that described above.

As another example, when the flexible display unit 140 is in the first state, the image display apparatus 100 according to an embodiment of the present invention determines, based on the audio information output from the image display apparatus 100, The radius of curvature can be determined.

The control unit 180 can set the radius of curvature based on the audio information output from the video display apparatus 100 at present. The audio information may include a sound size, a height, a tone, and the like.

The control unit 180 can analyze the sound output from the current image display apparatus 100 in real time and calculate the radius of curvature. For example, the control unit 180 can calculate the radius of curvature that is more immersive by using the analysis result of the voice currently output. For example, when the size of the output voice suddenly increases, the radius of curvature may be changed so that the flexible display unit 140 moves. Thus, a more vivid image can be provided.

The predetermined condition for determining the radius of curvature of the flexible display unit 140 as described above may be independently used for each condition, but at least two conditions may be combined to determine the radius of curvature. For example, the controller 180 may determine the radius of curvature according to the relative distance, and then may reset the curvature radius according to the surrounding roughness. That is, the control unit 180 can provide a user with a more immersive image by considering at least two conditions.

Meanwhile, in the present invention, the radius of curvature of the flexible display unit 140 may be set based on predetermined conditions, but the radius of curvature may be directly set from the user.

Further, the present invention may change the radius of curvature of the flexible display unit 140 based on predetermined conditions, but may recommend the viewing position to the user based on the radius of curvature of the flexible display unit 140 at present .

When the predetermined period of time has elapsed after the curvature radius of the flexible display unit 140 is set, the controller 180 controls the flexible display unit 140 140 may not change. That is, in the present invention, it can be expressed that the image display apparatus 100 enters the "locked state" in which the curvature radius of the flexible display unit 140 is not changed independently of the preset condition being changed.

In the locked state, although the condition causing the change of the radius of curvature is detected, the radius of curvature may not change. This is to prevent the user from interfering with the immersion of the image due to the change of the radius of curvature in real time.

Also, the controller 180 may switch the lock state to the released state at the request of the user or when the predetermined condition is satisfied. That is, in the released state, it is determined that the flexible display unit 140 in the locked state is not the optimal radius of curvature for providing the current image, and then the radius of curvature of the flexible display unit 140 is changed .

That is, when the controller 180 is in the released state, the controller 180 may change the radius of curvature of the flexible display unit 140 again according to a preset condition or user setting.

Accordingly, the user can select a state in which the radius of curvature of the flexible display unit 140 is fixed or varied, thereby preventing the radius of curvature from being unreasonably changed when the flexible display unit 140 is used .

Meanwhile, the image display apparatus 100 of the present invention can change the display state of a graphical user interface (GUI) displayed on the flexible display unit 140 according to the radius of curvature.

The GUI may be any visual information that can be provided to the user through the flexible display unit 140 such as a video, an icon, a widget, and other graphic objects displayed on the flexible display unit 140.

That is, when the flexible display unit 140 has the first radius of curvature, the controller 180 may display the GUI on the flexible display unit 140 in the first display state. The control unit 180 may display the GUI on the flexible display unit 140 in a second display state when the flexible display unit 140 has a second radius of curvature that is different from the first radius of curvature.

Here, the display state may be an output position, an output form, or the like of the GUI displayed on the flexible display unit 140. That is, according to the present invention, it is possible to correct the distortion of the graphic object according to the warping of the flexible display unit 140. In addition, the control unit 180 can output the graphic object at a position suitable for warping of the flexible display unit 140 by changing the output position of the image.

When the curvature of the flexible display unit 140 is being changed, the control unit 180 may output notification information informing the user that the radius of curvature of the flexible display unit 140 is being changed. Through this, the present invention can inform the user that the radius of curvature is changing. In addition, by notifying the user that the radius of curvature is changing, the present invention can provide an interface so that the user can stop changing the radius of curvature or change it to a different radius of curvature.

In the above, a method of changing the radius of curvature in the flexible display unit 140 having various radii of curvature has been described. Accordingly, the user can solve the disadvantage that the viewing position of the user is restricted in the flexible display unit 140 having the existing predetermined curvature radius.

Further, according to the present invention, by automatically changing the radius of curvature based on various conditions, it is possible to provide a user with a more immersive image.

In addition, the present invention can provide a user with an image suitable for a user by providing a customized radius of curvature to a user using user information.

Hereinafter, a method of calculating the radius of curvature of the flexible display unit when a plurality of users are detected through the sensing unit 125 will be described. FIGS. 6, 7A, 7B, 8A, 8B, 9A, and 9B are conceptual diagrams illustrating a method of calculating the radius of curvature of the flexible display unit 140 when a plurality of users are sensed.

The image display apparatus 100 according to an embodiment of the present invention warps the flexible display unit 140 according to whether or not at least a part of the plurality of detected users is located in a predetermined area through the sensing unit 125 You can decide if you want to keep it.

First, the control unit 180 may determine whether there is a user located in a predetermined area among the plurality of users. For example, the control unit 180 can determine whether there is a user located in a predetermined area by using the image received from the camera 600. Accordingly, the controller 180 can calculate the radius of curvature of the flexible display unit 140 in consideration of a user located in a predetermined area and a user located outside a predetermined area.

The control unit 180 can determine the three types of the plurality of users as follows. When at least a part of the plurality of users is located in a predetermined area and the remaining part is located outside a predetermined area and all of the plurality of users are located in a predetermined area, There may be cases where For example, as shown in FIGS. 6A, 6B, and 6C, when a user is located in a predetermined area in one of two users and the other user is located outside a predetermined area In the case where both users are located within a predetermined area, both users may be located outside a predetermined area.

In the following description, the description will be made on the basis of two users for the sake of convenience, but the same can be applied when two or more users are detected.

First, when any one of the two users is located in a predetermined area and the other user is located outside a predetermined area, the controller 180 determines whether the user located outside the predetermined area has a border of the predetermined area The radius of curvature of the flexible display unit 140 can be calculated according to the distance between the display unit 140 and the display unit 140. [

That is, when the user is detected within the preset area, the controller 180 may calculate the radius of curvature by considering the user located outside the predetermined area. In this case, if the user located outside the preset area is a user who is currently viewing the flexible display unit 140, and if the user is viewing the flexible display unit 140, It can be considered in calculating the radius of curvature of the flexible display unit 140. [

For example, as shown in (a) of FIG. 7A, a user located outside the predetermined area may be located at a distance y1 from the boundary of the predetermined area.

In this case, the control unit 180 compares the distance y1 with the predetermined reference distance, and if the distance is shorter than the predetermined reference distance, the user located outside the preset area is currently viewing the flexible display unit 140 It can be judged.

Here, the preset reference distance may be a distance previously stored in the memory unit 130. [ In addition, the preset reference distance may be a predetermined distance when the video display device is shipped from the factory. For example, the predetermined reference distance may be a length corresponding to half the length of the flexible display unit 140. [

If it is determined that a user located outside the preset area is a user viewing the flexible display unit 140, the controller 180 may determine a user located outside the predetermined area in calculating the radius of curvature of the flexible display unit 140 Can be considered.

For example, as shown in (b) of FIG. 7A, the controller 180 may calculate a radius of curvature based on a relative distance of a user located within a predetermined area, considering a user located outside the predetermined area, The radius of curvature different from the calculated radius of curvature can be calculated. For example, the radius of curvature calculated in consideration of a user located outside the preset area may be a radius of curvature larger than a radius of curvature considering only a user located within the predetermined area. That is, the controller 180 can calculate the radius of curvature for providing the optimal viewing screen to a plurality of users.

If the distance between the user located outside the predetermined area and the boundary of the predetermined area is longer than the preset reference distance, the controller 180 may display the user located outside the predetermined area to the current flexible display unit 140 It can be determined that the user is not watching. In this case, the control unit 180 may calculate the radius of curvature of the flexible display unit 140 considering only the user located in the predetermined area. That is, the controller 180 may not consider the user located outside the predetermined area in calculating the radius of curvature.

For example, as shown in FIGS. 7A and 7B, when the distance between the user located outside the preset area and the boundary of the predetermined area is y2, It can be judged that it is longer. In this case, the radius of curvature calculated considering only the user located within the predetermined area may not be changed.

Next, the plurality of detected users may all be within predetermined areas. In this case, the controller 180 may calculate the radius of curvature optimized for the plurality of users by considering all of the plurality of detected users.

For example, the control unit 180 may detect a relative distance to the flexible display unit 140 for each user located in the predetermined area.

On the other hand, at least some of the plurality of users may have the same relative distance. For example, as shown in (a) of FIG. 8A, the relative distance between the flexible display unit 140 and the two users located within a predetermined area may be equal to y1.

In this case, the radius of curvature can be calculated based on any one of the two users. At this time, any one of the users may be arbitrarily set or may be set in advance.

The controller may measure a distance between users having the same relative distance, and calculate a radius of curvature on the assumption that there is a virtual user at a center position of the measured distance. For example, as shown in (b) of FIG. 8A, when the distance between users having the same relative distance is K, the radius of curvature of the display unit can be calculated assuming a virtual user located at K / 2 .

Also, the plurality of users may have different relative distances. For example, as shown in FIG. 8B (a), two users may have different relative distances (y1, y2). At this time, the controller 180 may calculate curvature radii by assigning different weights to each user, and calculating a radius of curvature based on any one of the different relative distances.

For example, the controller 180 can calculate a virtual relative distance for calculating a radius of curvature of each user from different weights. For example, the controller 180 may calculate a virtual relative distance y3 by adding a weight of 0.7 to y1 and a weight of 0.3 to y2, and calculate the radius of curvature based on y3.

At this time, the different weights of the plurality of users may be determined according to the relative distance or according to the stored identification information. For example, the control unit 180 may assign a larger weight to a user having a longer relative distance, thereby improving the convenience of a user having a longer relative distance.

As another example, as shown in FIG. 8B, the controller 180 may calculate the radius of curvature based on a larger relative distance among the different relative distances. That is, when a plurality of users view the image display device 100, a curvature radius larger than a small radius of curvature can provide a more stable image.

Although not shown, the controller 180 may calculate the radius of curvature of the flexible display unit 140 based on a specific user among a plurality of users located within the predetermined area. That is, as described above, the radius of curvature can be calculated based on only a specific user among a plurality of users located within a predetermined area. Here, the specific user may be a user who has stored the identification information in the memory unit 130 in advance.

In this case, the control unit 180 may determine whether there is a user who matches the identification information of a specific user among the plurality of users detected by the sensing unit 125. [

As a result of the determination, if there is a user who matches the identification information, the controller can control the driving unit such that the radius of curvature of the flexible display unit 140 has a radius of curvature based on the relative position of the user and the flexible display unit 140 have.

If it is determined that there is no user matching the identification information, the controller 180 may determine the radius of curvature based on the user selected from among the plurality of users. In this case, on the flexible display unit 140, screen information capable of selecting any one of the plurality of users may be output. The controller 180 can change the radius of curvature of the flexible display unit 140 to be optimized for any one of the users.

Also, as shown in FIG. 9A, all of the plurality of detected users may be located outside a predetermined area. In this case, the controller 180 may control the flexible display unit 140 to have a second state. That is, the driver can be controlled so that the flexible display unit 140 has an infinite radius of curvature.

In addition, when the flexible display unit 140 is in the first state, the controller 180 can switch to the second state.

For example, as shown in FIG. 9B, when the plurality of users are located outside a predetermined area while the flexible display unit 140 is in the first state, The flexible display unit 140 can be switched from the first state to the second state having an infinite radius of curvature. At this time, as shown in FIG. 9B, the controller 180 may control the driving unit 150 such that the flexible display unit 140 has a radius of curvature of infinite.

A method of determining the radius of curvature of the flexible display unit 140 when a plurality of users are detected has been described above. Accordingly, the present invention can provide a stable image to a plurality of users even when a plurality of users are detected.

Hereinafter, a method of controlling the flexible display unit to have any one of the plurality of curvature radii of the flexible display unit based on a user's request will be described. 10A and 10B are conceptual diagrams illustrating a method of receiving a request from a user.

The image display apparatus 100 according to an exemplary embodiment of the present invention may further include a user input interface unit 121 capable of receiving a request from a user remotely. In this case, the image display apparatus 100 may further include a remote controller 121a for transmitting a user's input. For example, the remote controller 121a may be a remote controller.

In the present invention, a user interface for setting a radius of curvature may be provided to receive the request of the user. For example, as shown in FIG. 10A, on the flexible display unit 140, screen information for setting a radius of curvature can be displayed.

The screen information for setting the radius of curvature may be displayed in one area of the flexible display unit 140 when a user's request is received. At this time, the screen information for setting the radius of curvature may be displayed overlapping at least a part of the image when the image (for example, a TV program image or the like) being outputted to the flexible display unit 140 exists, Only the screen information for setting the radius of curvature can be displayed.

The curvature radius list including the predetermined curvature radius item may be output to the screen information for setting the curvature radius. In addition, a thumbnail image indicating a preview image at each radius of curvature may be displayed around the predetermined curvature radius item. The user can confirm the display state of the image in advance before changing the radius of curvature through the thumbnail image.

Also, though not shown in the drawing, the screen information for setting the radius of curvature may include an input window for receiving a radius of curvature directly from the user. In this case, the user can input a desired radius of curvature through a user input means (for example, a remote controller or a touch pad).

Also, as shown in FIG. 10B, the image display apparatus 100 according to an exemplary embodiment of the present invention may further include a gesture sensing unit that can sense a gesture of a user. Here, the gesture sensing unit may be various sensors capable of sensing a gesture such as a camera, a proximity sensor, and an infrared sensor capable of receiving a user's image.

The gesture sensing unit may sense a user's gesture in real time or at predetermined intervals when an image is displayed on the flexible display unit 140 of the image display device 100 for efficient use of the power source. Alternatively, the gesture sensing unit may detect the gesture of the user in real time or at predetermined intervals when power is applied to the image display device 100 even when the image is not displayed on the flexible display unit 140. [ This is to determine whether the flexible display unit 140 displays a video through a user's gesture.

Hereinafter, a case where a user's gesture is sensed while an image is displayed on the flexible display unit 140 will be described. However, the present invention can be applied to a case where an image is not displayed on the flexible display unit 140.

When the user's gesture sensed by the gesture sensing unit matches the pre-stored gesture, the controller 180 may perform a function associated with the pre-stored gesture. Here, the pre-stored gesture may be stored by the setting of the user or at the factory shipment of the image display apparatus 100. [

The function associated with the pre-stored gesture may be a control command to change the radius of curvature associated with the pre-stored gesture. For example, as shown in FIG. 10B, the controller 180 may sense a user's finger gesture.

In this case, the control unit 180 determines whether the finger gesture matches the pre-stored gesture, and when the pre-stored gesture coincides with the pre-stored gesture, the flexible display unit 140 has a radius of curvature associated with the pre- The driving unit 150 can be controlled.

For example, as shown in FIG. 10B, when the user's finger gesture is a gesture indicating "2 ", the control unit 180 determines that the flexible display unit 140 has received the" 2 & It is possible to control the driving unit 150 to have a curvature radius associated with the pointing gesture. Accordingly, the present invention can easily determine the radius of curvature of an image at a long distance.

Various methods of changing the radius of curvature according to the user's selection have been described above. Accordingly, the present invention can provide an image display device having a radius of curvature that meets the needs of individual users. In addition, the present invention can provide an image display apparatus having a radius of curvature suitable for various situations.

Hereinafter, a method for determining the radius of curvature and the viewing position in accordance with the user's state information in the image display apparatus capable of changing the radius of curvature will be described. 11A, 11B, and 11C are conceptual diagrams illustrating a method for determining at least one of a curvature radius and a viewing position according to a viewing position of a user.

The image display apparatus 100 according to an embodiment of the present invention may store the state information of the user and provide an image display apparatus having a radius of curvature optimized for the user based on the state information. Here, the status information of the user may include an attitude of viewing the user's usual TV, frequent program information, user's viewing position information, and the like.

For this, the control unit 180 can sense the user through the sensing unit. Then, the controller 180 may detect the status information of the user using the identification information of the user detected through the sensing unit 125. At this time, the identification information of the user may be stored in advance in the memory unit 130 by the user.

If the state information of the user is detected, the controller 180 compares the state information with state information of the current user (for example, the currently sensed viewing position) Information can be detected.

At this time, when the current state information matching the previously stored state information is detected, the controller 180 controls the driving unit 150 such that the flexible display unit 140 has a radius of curvature associated with the previously stored state information .

For example, as shown in (a) of FIG. 11A, the status information of the user may be viewing position information. At this time, the controller 180 may detect state information corresponding to the identification information through the identification information of the user detected by the sensing unit 125. The controller 180 may compare the detected state information with the current state information to control the driving unit 150 to have a radius of curvature appropriate to the current state information.

That is, according to the present invention, the flexible display unit 140 can have different radii of curvature according to individual user's state information, even if they are the same viewing position.

The control unit 180 detects at least one recommended radius of curvature instead of directly controlling the driving unit 150 so that the flexible display unit 140 has a radius of curvature based on the user's state information, It is possible to output a preview image for each of them so that one of the recommended radiuses of curvature can be selected from the user.

For example, as shown in FIG. 11B, the controller 180 may sense the current viewing position of the user through the sensing unit (e.g., the camera 600). Thereafter, the controller 180 may detect at least one radius of curvature at the detected viewing position by comparing the sensed viewing position with pre-stored state information.

11B, the control unit 180 may output the preview image at the detected at least one radius of curvature to one area of the flexible display unit 140. As shown in FIG. Thus, the user can confirm the output state of the image before changing the radius of curvature.

In addition, the user can control the driving unit such that the flexible display unit 140 has the selected radius of curvature by selecting any one of the preview images.

11B illustrates a case where the viewing position is sensed through the camera 600. However, the present invention is not limited to this, and the radius of curvature can be changed according to a plurality of viewing positions previously stored without the camera 600. [

That is, the radius of curvature is stored in the memory unit 130 for each viewing position, and the user can change the radius of curvature of the flexible display unit 140 by selecting the viewing position similar to the current position of the viewing position .

Meanwhile, the image display apparatus 100 according to an embodiment of the present invention may change the radius of curvature of the flexible display unit 140 based on the state information of the user. However, the curvature radius of the flexible display unit 140 may be changed, Based on the radius, the user's viewing position may be recommended.

When the controller 180 senses that the flexible display unit 140 is in the first state, it can detect the current radius of curvature.

At this time, the controller 180 can output the viewing position to the user, which is optimal for the immersion feeling, the audiovisual angle, etc., in the current radius of curvature to one area of the flexible display unit 140. For example, as shown in FIG. 11C (a), the current flexible display portion 140 may be in a first state having a finite radius of curvature. At this time, the controller 180 senses the radius of curvature of the current flexible display unit 140 and calculates an optimal viewing position in the detected radius of curvature. In this case, as shown in (b) of FIG. 11C, the control unit 180 can output the calculated viewing position information in one area of the flexible display unit 140. [

Whether the control unit 180 changes the radius of curvature of the flexible display unit 140 or recommends the viewing position may be determined by the user's setting or predetermined conditions. For example, when the flexible display unit 140 has a first state for a predetermined time and a predetermined time has passed with a predetermined radius of curvature, the controller 180 controls the flexible display unit 151 The viewing position can be recommended without changing the curvature radius of the viewing position.

In addition, the control unit 180 may recommend the viewing position together with the change of the radius of curvature. That is, after changing the radius of curvature, the controller 180 may recommend the viewing position at the changed radius of curvature.

Accordingly, the user can know the optimum viewing position at the curvature radius of the flexible display unit 140 at present. Further, by moving to the optimal viewing position, the user can be provided with an image having an optimal immersion feeling and an audiovisual angle.

The viewing position at the fixed radius of curvature is recommended in a state where the radius of curvature of the flexible display unit 140 is changed or the radius of curvature of the flexible display unit 140 is fixed based on the state information of the user Method.

Hereinafter, a method of operating in the locked state in which the change of the radius of curvature is restricted in the flexible display unit 140 having the first state will be described. 12A and 12B are conceptual diagrams illustrating a control method of the video display device operating in the locked state.

The image display apparatus 100 according to an embodiment of the present invention may change the radius of curvature based on various conditions. However, if the curvature radius is changed in real time as the condition is changed every time, the user may rather be less immersed in the image.

In order to prevent this, the image display apparatus 100 according to an exemplary embodiment of the present invention is configured such that even though the flexible display unit 140 has the first state, the curvature of the flexible display unit 140 The radius may not be changed.

That is, the state in which the curvature radius of the flexible display unit 140 is not changed based on the predetermined condition can be referred to as "locked state ". The term "locked state" may be varied in various forms.

The control unit 180 may allow the flexible display unit 140 to pass the preset time at a specific radius of curvature or enter the locked state at the user's selection. The controller 180 may not change the radius of curvature of the flexible display unit 140 even though the predetermined condition is changed.

For example, as shown in FIG. 12A, when the video display device 100 is in the locked state, the control unit 180 determines that the relative distance between the user and the flexible display unit 140 is changed The curvature radius of the flexible display unit 180 may not be changed.

If it is detected that the predetermined condition is changed in the locked state, the control unit 180 switches the locked state to the released state so that the radius of curvature of the flexible display unit 140 can be changed based on the predetermined condition It is possible to output the screen information related to the release of the lock state to one area of the flexible display unit 140 so that the user can be selected.

For example, as shown in (b) of FIG. 12A, when the controller 180 detects that the relative position between the user and the flexible display unit 140 is changed while the video display apparatus is in the locked state, A pop-up window asking whether to switch the lock state to the released state can be output to one area of the flexible display unit 140. [ Accordingly, the user can switch the locked state to the released state and control the flexible display unit 140 to have a radius of curvature suitable for the position of the user.

On the other hand, the controller 180 may change the radius of curvature of the flexible display unit 140 based on predetermined conditions when the locked state is changed to the released state. For example, as shown in (a) of FIG. 12B, the controller 180 may select a relative distance between the user and the flexible display unit 140 Can be detected. 12B, the control unit 180 may control the driving unit 150 such that the flexible display unit 140 has a radius of curvature based on the changed relative distance.

The control method of the image display apparatus having the locked state and the released state has been described above. Accordingly, the present invention can overcome the disadvantage that the immersion of the image due to the frequent change of the radius of curvature is hindered.

Hereinafter, a method of setting a function related to the radius of curvature of the flexible display unit 140 will be described. 13A, 13B, and 13C are conceptual diagrams illustrating a method for setting a function related to the radius of curvature of the flexible display unit 140. FIG.

Since the image display apparatus 100 according to an embodiment of the present invention can have a plurality of curvature radii, it is possible to provide a user interface capable of setting various functions related to the plurality of curvature radii.

For example, as shown in FIG. 13A, the image display apparatus 100 may output a user interface capable of setting various functions related to a plurality of curvature radii in the flexible display unit 140 . Here, the user interface for setting various functions related to the plurality of curvature radii may include a graphical object for determining whether to set the radius of curvature automatically or manually, a graphical object for associating a function that enables selection of a radius of curvature from the user, A graphical object for selecting a change condition of the radius of curvature, and the like.

The controller 180 may perform a function related to a graphic object selected by the user among the graphic objects.

The controller 180 controls the driving unit 150 to change the radius of curvature of the flexible display unit 140 when a graphic object associated with the function of enabling the selection of the radius of curvature among the plurality of graphic objects is selected, Can be controlled.

The control unit 180 may output a notification to the user to stop changing the radius of curvature of the flexible display unit 140 while the radius of curvature of the flexible display unit 140 is being changed.

At this time, the controller 180 may stop changing the radius of curvature of the flexible display unit 140 when a user's request is received. Then, as shown in (c) of FIG. 13A, the controller 180 may output screen information asking whether to set the current radius of curvature to the basic radius of curvature. Here, the basic radius of curvature may be at least one radius of curvature outputted from the user when the radius of curvature of the flexible display unit 140 is set. (See FIG. 10A)

Next, as shown in FIG. 13B (a), the controller 180 may select a graphical object for selecting a change condition of the radius of curvature so that the radius of curvature of the plurality of graphical objects may be automatically changed have. At this time, as shown in FIG. 13B, a condition list including a plurality of curvature radius change items may be output to the flexible display unit 140. Through this, the user can select at least one of the plurality of curvature radius change items.

13C, when the status information is selected from the condition list, an interface for receiving the user's status information may be output on the flexible display unit 140. [

For example, as shown in (b) of FIG. 13C, the controller 180 controls the user through the interface for receiving the status information of the user, such as the user's key, the viewing position, The state information related to the video display device 100 of FIG.

In the above, a method of setting the radius of curvature in the flexible display unit having a varying radius of curvature has been described. Accordingly, the user can make various settings for the radius of curvature of the flexible display unit.

Hereinafter, the display state of the image is changed as the radius of curvature of the flexible display unit is changed. FIGS. 14A and 14B are conceptual diagrams illustrating a display state of an image and a graphic object displayed on the flexible display unit according to a radius of curvature of the flexible display unit; FIG.

The image display apparatus 100 according to an embodiment of the present invention can change the display state of all the screen information output from the flexible display unit 140 according to the variable radius of curvature of the flexible display unit 140. [ That is, the image display apparatus 100 can change the display state of the image at each radius of curvature in order to prevent distortion of the image due to warping of the flexible display unit 140.

Here, all the screen information that can be output from the flexible display unit 140 may be a video (moving picture and still picture), a graphic object, or the like.

First, the control unit 180 may detect the current radius of curvature of the flexible display unit 140 to prevent the image distortion.

If the radius of curvature is the first radius of curvature, the controller 180 outputs the screen information currently displayed on the flexible display unit 140 in the first display state, and if the radius of curvature is the second radius of curvature, And display the screen information displayed on the display unit 140 in a second display state. Here, the display state may mean the degree of warp of the image, the output position of the graphic object, and the like.

For example, as shown in FIG. 14A, when the flexible display unit 140 is in the second state, the display state of the screen information displayed on the flexible display unit 140 is defined as a basic display state can do. In this case, the control unit 180 can always output the screen information in the basic display state without having to detect the radius of curvature of the flexible display unit 140. [

14A, when the flexible display unit 140 is in the first state, the radius of curvature of the current flexible display unit 140 can be detected.

The control unit 180 may determine the display state of the image displayed on the flexible display unit 140 according to the detected radius of curvature. For example, as shown in (b) and (c) of FIG. 14A, the image currently being output to the flexible display unit 140 is warped together with warping, and the warping of the graphic object 1400 is increased The output position can be changed so as to be output to the center portion.

Accordingly, the user can view the undistorted image despite the bending of the flexible display unit 140. Also, by changing the output position of the graphic object as the flexible display unit 140 is warped, user convenience can be improved.

In addition, when the flexible display unit 140 is bent at present, the controller 180 may output notification information to notify the user of the curvature.

Here, the notification information may be announced using at least one of a visual, auditory, and tactile manner. For example, as shown in FIGS. 14A, 14B, and 14C, when the flexible display unit 140 is bent, the controller 180 outputs a sound to the user, Portion 9140) is warped.

When the flexing of the flexible display unit 140 is terminated, the notification information may not be output any more.

Accordingly, the user can recognize the current state of the flexible display unit 140 and control the display device 100 so as not to change rapidly according to the current state.

The present invention can solve the disadvantage that the viewing position of the user is restricted in the flexible display unit 140 having only a predetermined radius of curvature in the flexible display unit 140 having various curvature radii.

In addition, the present invention can broaden the audiovisual angle of a user and provide a more immersive image by changing the radius of curvature in accordance with various conditions in a video display device having a flexible display portion having a variable radius of curvature.

In addition, the present invention can detect a current curvature radius of a flexible display unit having a variable radius of curvature, and recommend a viewing position to a user according to the radius of curvature.

Video display device: 100, Tuner part: 110
User interface unit 121, storage unit 130
Flexible display part: 140, Driving part: 150
A control unit 180, a power supply unit 190

Claims (22)

A sensing unit for sensing a position of a user;
A flexible display unit having a first state having a finite radius of curvature and a second state having a radius of curvature of infinite;
A driving unit disposed on a rear surface of the flexible display unit and applying a force to a rear surface of the flexible display unit such that a radius of curvature of the flexible display unit is changed; And
And a control unit for controlling the driving unit so that the state of the flexible display unit becomes either one of a first state and a second state depending on whether the user is located within a predetermined area based on the flexible display unit,
Wherein the flexible display unit has a first state having a finite radius of curvature when the user is located within a predetermined area and has a second state having an infinite radius of curvature when the user is located outside a predetermined area,
Wherein the control unit controls the driving unit such that a radius of curvature of the flexible display unit corresponds to a radius of curvature based on a relative distance between the display unit and the user when the flexible display unit is in the first state. The method according to claim 1,
The sensing unit senses the position of the user at a predetermined time interval or in real time,
The control unit
Wherein when the flexible display unit is operated in a first state having a finite radius of curvature and the position of the user is located outside a predetermined area, the flexible display unit is switched to operate in a second state. Device. 3. The method of claim 2,
The control unit
Wherein the control unit controls the driving unit so that the curvature radius of the flexible display unit has an infinite radius of curvature when the flexible display unit is switched to the second state. The method according to claim 1,
Further comprising a memory unit for storing mapping information mapping different curvature radii according to relative distances,
The control unit
Wherein when the flexible display unit operates in a first state having a finite radius of curvature, a relative distance between the user and the flexible display unit is detected using the position of the user detected by the sensing unit,
Wherein the control unit controls the driving unit such that the flexible display unit has a radius of curvature mapped to the detected relative distance. 5. The method of claim 4,
The control unit
Wherein the controller determines the radius of curvature of the flexible display unit based on a predetermined condition when it is detected that a plurality of users are located within the predetermined area. 6. The method of claim 5,
The control unit
The method comprising: measuring a distance between the plurality of users when the plurality of users are located at the same relative distance from the flexible display unit; calculating a radius of curvature based on a center point of the distance;
Wherein when the plurality of users are located at different relative distances from the flexible display unit, the radius of curvature is calculated based on any one of the plurality of users. 5. The method of claim 4,
The control unit
When it is detected that at least one user among the plurality of users is located outside the predetermined area,
Judging whether at least one user located outside the preset area is to be taken into consideration when calculating a radius of curvature of the flexible display unit,
Calculating a radius of curvature in consideration of the at least one user and a user located in a predetermined area among the plurality of users,
And calculates a radius of curvature in consideration of a user located in a predetermined area among the plurality of users if the user is not considered as a result of the determination. 8. The method of claim 7,
The control unit
If at least one user located outside the preset area is to be considered in calculating the radius of curvature,
And controls the driving unit to have a radius of curvature larger than a radius of curvature calculated using the position of the user located in the predetermined area. 8. The method of claim 7,
The control unit
Wherein the control unit controls the driving unit to operate the flexible display unit in a second state when the detected plurality of users are located outside a predetermined area and to control the curvature radius of the flexible display unit to be infinite. The method according to claim 1,
The control unit
And calculates a radius of curvature of the flexible display unit according to a user's selection. 11. The method of claim 10,
The sensing unit senses the movement of the user,
The control unit
Wherein the control unit controls the driving unit such that the radius of curvature of the flexible display unit is a radius of curvature based on the predetermined gesture when the motion of the user coincides with the predetermined gesture. 11. The method of claim 10,
Further comprising a memory unit for storing user information associated with a user,
The control unit
Wherein the control unit identifies a user sensed through the sensing unit using the user information and controls the driving unit to have a radius of curvature of the flexible display unit to have a radius of curvature mapped to the identified user information. 13. The method of claim 12,
The control unit
And outputs at least one image for recommending a radius of curvature according to a previously stored viewing position to one area of the flexible display unit based on the identified user information when the user sensed through the sensing unit is identified. 14. The method of claim 13,
The control unit
Wherein the control unit controls the driving unit such that the curvature radius of the flexible display unit has a radius of curvature recommended by the selected one of the images when any one of the at least one image is selected. The method according to claim 1,
Further comprising an illuminance detecting unit for detecting a surrounding illuminance,
The control unit
Wherein the controller calculates the radius of curvature of the flexible display unit according to the ambient illuminance sensed by the illuminance sensing unit when the flexible display unit operates in the first state. The method according to claim 1,
The control unit
Wherein when the flexible display unit is operated in the first state and the predetermined time elapses, the user enters a locked state in which the radius of curvature of the flexible display unit is not changed independently of the position of the user. Device. 17. The method of claim 16,
The control unit
Wherein the control unit outputs a graphic object to the flexible display unit when the user enters the locked state and a change in the user's position is detected. 18. The method of claim 17,
The control unit
When the graphic object is selected, switching the lock state to an unlock state in which the curvature change of the flexible display unit is possible,
Wherein the curvature radius of the flexible display unit is changed to a radius of curvature based on the changed position of the user when the user enters the release state. The method according to claim 1,
The control unit
The radius of curvature of the flexible display unit is changed while the curvature radius of the flexible display unit is changed so that the radius of curvature of the flexible display unit has a radius of curvature based on a relative position between the user and the flexible display unit, And outputting notification information indicating that the image is being displayed. 20. The method of claim 19,
Wherein the notification information is output in at least one of a visual, tactile, and auditory manner. The method according to claim 1,
At least one graphic object is displayed on the flexible display unit,
The control unit
Wherein the display position of the graphic object is changed according to a radius of curvature of the flexible display unit. Sensing a position of the user;
Detecting whether the user is located within a predetermined area;
Controlling the flexible display unit to operate in any one of a first state having a finite radius of curvature and a second state having an infinite radius of curvature according to whether the user is located within a predetermined area,
When the user is detected to be located within a predetermined area, operates the flexible display unit to a first state having a finite radius of curvature,
Wherein the control unit operates the flexible display unit in a second state having an infinite radius of curvature when the user is located outside a preset area.

Images