WO2021141171A1

WO2021141171A1 - Image display device and operation method thereof

Info

Publication number: WO2021141171A1
Application number: PCT/KR2020/000537
Authority: WO
Inventors: 박정규
Original assignee: 엘지전자 주식회사
Priority date: 2020-01-10
Filing date: 2020-01-10
Publication date: 2021-07-15

Abstract

The present invention relates to an image display device and an operation method thereof. An image display device, according to one embodiment of the present invention, comprises: a housing; a roller that is disposed inside the housing; a display panel that is wound or unwound on the roller and exposed to the outside of the housing through an opening of the housing; and a control unit that controls an operation of the roller such that at least one sensor and the display panel roll-up or roll-down, wherein the control unit, when controlling the operation of the roller, determines whether an object exists adjacent to the opening of the housing on the basis of a sensing value of the at least one sensor, and when it is determined that an object exists adjacent to the opening of the housing, may cause the roller to not operate. Various other embodiments are possible.

Description

Video display device and its operation method

The present invention relates to a video display device and an operating method thereof.

An image display device is a device having a function of displaying an image that a user can watch. In recent years, along with the development of the information society, as the demand for image display devices increases in various forms, LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electro luminescent Display), VFD (Vacuum Fluorescent Display) ) and various image display devices are being studied and used.

Among them, an image display device using an organic light emitting diode (OLED) has superior luminance and viewing angle characteristics compared to an image display device such as LCD, and does not require a backlight unit, so it can be implemented in an ultra-thin shape. There are advantages.

In addition, since the flexible display panel including the organic light emitting diode (OLED) is formed on a substrate made of a material having flexibility such as polyimide, it can be bent or wound on a roller. , by using a flexible display panel, it is possible to implement an image display device that is wound or unfolded on a roller.

On the other hand, in the process of winding or unfolding the flexible display on the roller, the flexible display moves through the opening of the housing. In this case, there may be a problem that foreign substances are introduced through the opening. In particular, when a body part, such as a user's hand or hair, is caught between the openings while the flexible display is wound around the roller, a serious safety accident may occur.

SUMMARY OF THE INVENTION The present invention aims to solve the above and other problems.

Another object is to determine whether an object adjacent to the opening of the housing exists when controlling the operation of the roller, and when the object exists adjacent to the opening of the housing, an image display device capable of restricting the operation of the roller, and the To provide a method of operation.

In order to achieve the above object, an image display device according to an embodiment of the present invention includes a housing, a roller disposed inside the housing, a display panel wound or unwound on the roller, and exposed to the outside of the housing through an opening of the housing; at least one sensor and a control unit for controlling the operation of the roller so that the display panel is rolled up or rolled down, wherein the control unit includes at least one sensor when controlling the operation of the roller It is determined whether an object exists adjacent to the opening of the housing based on the sensed value of , and when it is determined that the object exists adjacent to the opening of the housing, the roller may be controlled not to operate.

On the other hand, the operating method of the image display device according to an embodiment of the present invention, when controlling the operation of the roller so that the display panel roll-up (roll-up) or roll-down (roll-down), included in the image display device Based on the sensed value of at least one sensor, determining whether an object exists adjacent to the opening of the housing, and controlling the roller not to operate when it is determined that an object exists adjacent to the opening of the housing It can include actions.

The effect of the image display device according to the present invention will be described as follows.

According to at least one embodiment of the present invention, when controlling the operation of the roller, it is possible to prevent the occurrence of a safety accident by accurately determining whether an object adjacent to the opening of the housing exists using various sensors.

In addition, according to at least one embodiment of the present invention, by using an external device such as a remote control to induce the user's interest toward the opening when controlling the operation of the roller, it is possible to more reliably prevent the occurrence of a safety accident.

Further scope of applicability of the present invention will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments such as preferred embodiments of the present invention are given by way of illustration only, since various changes and modifications within the spirit and scope of the present invention may be clearly understood by those skilled in the art.

1 and 2 are diagrams illustrating an image display device having a rollable display according to an embodiment of the present invention.

3 to 8 are diagrams illustrating examples of configurations included in an image display device according to various embodiments of the present disclosure.

9 is an example of an internal block diagram of an image display device according to an embodiment of the present invention.

FIG. 10 is an example of an internal block diagram of the display of FIG. 9 .

11 to 12B are an example of a flowchart of a method of operating an image display apparatus according to an embodiment of the present invention.

13 is an example of a flowchart of a method of operating an image display apparatus according to another embodiment of the present invention.

14A to 14C are diagrams referred to in the description of an operation method of the image display device of FIG. 13 .

Hereinafter, the present invention will be described in detail with reference to the drawings. In the drawings, in order to clearly and briefly describe the present invention, the illustration of parts irrelevant to the description is omitted, and the same reference numerals are used for the same or extremely similar parts throughout the specification.

The suffixes "module" and "part" for the components used in the following description are given simply in consideration of the ease of writing the present specification, and do not give a particularly important meaning or role by themselves. Accordingly, the terms “module” and “unit” may be used interchangeably.

In the present application, terms such as "comprises" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It is to be understood that it does not preclude the existence of, or addition of, elements, numbers, steps, operations, components, parts, or combinations thereof.

Also, in this specification, terms such as first and second may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

The image display device 100 may be a device that processes and outputs an image. The video display device 100 is not particularly limited as long as it can display a screen corresponding to a video signal, such as a TV or a monitor.

The image display apparatus 100 may receive a broadcast signal, process it, and output a signal-processed broadcast image. When the image display device 100 receives a broadcast signal, the image display device 100 may correspond to a broadcast reception device.

The image display device 100 may receive a broadcast signal wirelessly through an antenna, or may receive a broadcast signal through a wire through a cable. For example, the image display apparatus 100 may receive a terrestrial broadcast signal, a satellite broadcast signal, a cable broadcast signal, an Internet Protocol Television (IPTV) broadcast signal, and the like.

Referring to FIG. 1 , the image display device 100 may include a display 20 and a housing 30 .

The housing 30 may have an internal space, and at least a portion of the display 20 may be located inside the housing 30 . At least a portion of the display 20 may be located outside the housing 30 .

An opening 41 may be formed on one surface of the housing 30 , and at least a portion of the display 20 may be exposed to the outside of the housing 30 through the opening 41 .

A direction parallel to the longitudinal direction of the housing 30 may be referred to as a first direction DR1 , a +x-axis direction, a -x-axis direction, a left direction, or a right direction. A direction in which the display 20 displays a screen may be referred to as a +z axis, a forward direction, or a forward direction. The direction opposite to the direction in which the display 20 displays the screen may be referred to as the -z axis, the rear direction, or the rear direction. The third direction DR3 may be parallel to the +z-axis direction or the -z-axis direction. A direction parallel to the height direction of the display device 100 may be referred to as a second direction DR2 , a +y-axis direction, a -y-axis direction, an upper direction, or a lower direction.

The third direction DR3 may be a direction perpendicular to the first direction DR1 and/or the second direction DR2 . The first direction DR1 and the second direction DR2 may be collectively referred to as a horizontal direction. In addition, the third direction DR3 may be referred to as a vertical direction. The left-right direction LR may be parallel to the first direction DR1 , and the vertical direction UD may be parallel to the second direction DR2 .

Referring to FIG. 2 , the degree to which at least a portion of the display 20 is exposed to the outside of the housing 30 may be adjusted as necessary.

The display 20 may display an image. For example, the display 20 may display an image through at least a partial area exposed to the outside of the housing 30 among the entire area.

The display 20 may be a rollable display including a flexible display panel (not shown). For example, the display 20 may include an organic light emitting panel formed of an organic light emitting diode (OLED).

A roller 143 (refer to FIG. 4A ) on which the rollable display is wound and a motor (not shown) rotating the roller 143 may be located inside the housing 30 . At this time, the display 20, according to the rotation of the roller 143, may be rolled-up (roll up) or roll-down (roll down), through the roll-up or roll-down of the display (20) , a size of an area exposed to the outside of the housing 30 (hereinafter, referred to as an exposed area) among the entire area of the display 20 may be adjusted.

The image display apparatus 100 may adjust the size of an exposure area among the entire area of the display 20 according to a mode.

The image display device 100 is such that the display 20 is wound on the roller 143 located inside the housing 30 so that the display 20 is not exposed to the outside of the housing 30 through the opening 41 . can For example, when the power of the image display apparatus 100 is turned off or in a zero view mode, the display 20 is not exposed to the outside of the housing 30 through the opening 41 . , power may not be supplied to the display 20 .

Here, the zero view mode refers to a mode in which the display 20 is not exposed to the outside of the housing 30 and only some components of the image display device 100 (eg, the audio output unit 285 of FIG. 6 ) are operated. can mean

Meanwhile, in the image display device 100 , the display 20 is rolled up according to the rotation of the roller 143 , and a portion of the entire area of the display 20 may be exposed to the outside of the housing 30 . For example, the image display apparatus 100 may display an image through a portion of the entire area of the display 20 exposed to the outside of the housing 30 in a line view mode.

Here, the line view mode may refer to a mode in which only a portion of the entire area of the display 20 is exposed to the outside of the housing 30 .

Meanwhile, in the image display device 100 , the display 20 is rolled up according to the rotation of the roller 143 , so that the entire area of the display 20 may be exposed to the outside of the housing 30 . For example, the image display apparatus 100 may display an image through the entire area of the display 20 exposed to the outside of the housing 30 in a full view mode.

Here, the full view mode may refer to a mode in which the entire area of the display 20 is exposed to the outside of the housing 30 .

Referring to FIG. 3 , the display 20 may include a display panel 10 and a plate 15 . The display panel 10 may be flexible. For example, the display panel 10 may be an organic light emitting display panel including an organic light emitting diode (OLED).

The display panel 10 may have a front surface for displaying an image. The display panel 10 may have a rear surface opposite to the front surface. The front surface of the display panel 10 may be covered with a light-transmitting material. For example, the light-transmitting material may be a synthetic resin or a film.

The plate 15 may be coupled, fastened, or attached to the rear surface of the display panel 10 . The plate 15 may include a metal material. The plate 15 may be referred to as a module cover 15 , a cover 15 , a display panel cover 15 , a panel cover 15 , an apron 15 , and the like.

Referring to FIG. 4 , a portion of the upper surface of the housing 30 in which the opening 41 is positioned may be configured as a door 40 . In this case, the remaining portion of the upper surface of the housing 30 except for the door 40 may be referred to as a top cover 30a.

The door 40 may be formed to extend long in the longitudinal direction of the housing 30 .

The door 40 may be positioned so as not to be spaced apart from the top cover 30a when the display 20 is not exposed to the outside of the housing 30 . In this case, since a space is not formed between the door 40 and the top cover 30a, the opening 41 may not be formed either.

On the other hand, when at least a portion of the display 20 is exposed to the outside of the housing 30 , the door 40 may move backward to separate the top cover 30a and at least a portion of the door 40 . In this case, a separated space between the door 40 and the top cover 30a may be formed as the opening 41 .

On the other hand, the overall width w2 of the opening 41 is such that the display 20 can be easily moved from the inside to the outside of the housing 30 or from the outside of the housing 30 to the inside of the display 20 . It may be formed to be larger than the width w1.

At this time, foreign substances may be introduced through the space 45 between the display 20 and the top cover 30a or the space 47 between the display 20 and the door 40, or a part of the user's body may be caught, The image display device 100 may include a configuration for preventing this.

Referring to FIG. 5 , the image display apparatus 100 may include at least one optical signal transmitter 51 and an optical signal receiver 52 . The optical signal transmitter 51 and the optical signal receiver 52 may be disposed inside the housing 30 .

The optical signal transmitter 51 may transmit an optical signal toward the opening 41 of the housing 30 , and the optical signal receiver 52 may receive the optical signal transmitted from the optical signal transmitter 51 . can Here, the optical signal may be a laser signal of various wavelengths having linearity.

The optical signal transmitting device 51 may be disposed adjacent to one side of the opening 41 of the housing 30 , and the optical signal receiving device 52 may face the optical signal transmitting device 51 , the opening 41 . ) may be disposed adjacent to the other side.

The optical signal transmitting device 51 and the optical signal receiving device 52 may be disposed to correspond to the space 45 between the display 20 and the top cover 30a, and the display 20 and the door 40 . It may be arranged to correspond to the space 47 therebetween.

Meanwhile, although not shown in the drawing, both the optical signal transmitter 51 and the optical signal receiver 52 may be disposed adjacent to one side of the opening 41 . In this case, the optical signal transmitted from the optical signal transmitter 51 may be reflected from the other side of the opening 41 and input to the optical signal receiver 52 .

6A and 6B , the image display apparatus 100 may include a proximity sensor 61 for detecting whether an object is in proximity.

The proximity sensor 61 may include a photosensor, a passive infrated sensor (PIR), a Doppler sensor, and the like.

The proximity sensor 61 may be disposed on the front surface of the housing 30 , and may detect an object positioned in the front region 60 of the housing 30 . At this time, the proximity sensor 61 may be disposed to face downward by a predetermined angle θ with respect to the front of the housing 30 so as to detect an object located within a predetermined distance L from the housing 30 . have.

Meanwhile, in this drawing, the proximity sensor 61 is disposed on the front of the housing 30 to detect an object positioned in the front, but the present invention is not limited thereto. For example, the proximity sensor 61 may be disposed not only on the front surface of the housing 30 , but also on the side, rear, and/or top surface of the housing 30 .

Referring to FIG. 7 , the image display device 100 may include a piezoelectric sensor 71 . The piezoelectric sensor 71 may be disposed inside the housing 30 .

The piezoelectric sensor 71 may be disposed adjacent to the lower end of the upper surface of the housing 30 , and may generate an electrical signal according to pressure applied to the upper end of the upper surface of the housing 30 .

The image display device 100 may include a plurality of piezoelectric sensors 71 . In this case, the plurality of piezoelectric sensors 71 may be disposed adjacent to the lower ends corresponding to the corners of the upper surface of the housing 30 , respectively.

Referring to FIG. 8 , the image display device 100 may include at least one of a current supply device 81 and a current sensing device 82 .

The current supply device 81 and the current sensing device 82 may be disposed inside the housing 30 . The housing 30 may be formed of a material having conductivity greater than or equal to a predetermined standard. For example, the housing 30 may be formed of a metal material.

The current supply device 81 may supply a current less than a predetermined size to the housing 30 , and the current sensing device 82 may sense a current flowing through the housing 30 . Here, the current less than a predetermined size delivered by the current supply device 81 to the housing 30 is a size (eg, 1 mA) that can feel the electricity flowing through the housing 30 when the user comes into contact with the housing 30 . ) may be smaller than the current.

Meanwhile, an insulator may be disposed between the lower surface 30b and the bottom of the housing 30 .

Referring to FIG. 9 , the image display device 100 includes a broadcast receiving unit 205 , an external device interface unit 230 , a network interface unit 235 , a storage unit 240 , a user input interface unit 250 , and a sensor. It may include a unit 260 , a control unit 270 , a driving unit 275 , a display 280 , an audio output unit 285 , and/or a power supply unit 290 .

The broadcast receiver 205 may include a tuner 210 and a demodulator 220 .

The tuner unit 210 may select a broadcast signal corresponding to a channel selected by the user or all channels stored in advance among broadcast signals received through an antenna (not shown) or a cable (not shown).

The tuner unit 210 may convert the selected broadcast signal into an intermediate frequency signal or a baseband video or audio signal. For example, if the selected broadcast signal is a digital broadcast signal, it may be converted into a digital IF signal (DIF), and if the selected broadcast signal is an analog broadcast signal, it may be converted into an analog baseband image or audio signal (CVBS/SIF). . That is, the tuner unit 210 may process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS/SIF) output from the tuner unit 210 may be directly input to the control unit 270 .

Meanwhile, the tuner unit 210 may sequentially select broadcast signals of all broadcast channels stored through the channel storage function among the received broadcast signals, and convert them into an intermediate frequency signal or a baseband video or audio signal.

Meanwhile, the tuner unit 210 may include a plurality of tuners in order to receive broadcast signals of a plurality of channels. Alternatively, a single tuner that simultaneously receives broadcast signals of a plurality of channels is also possible.

The demodulator 220 may receive the digital IF signal DIF converted by the tuner 210 and perform a demodulation operation.

The demodulator 220 may output a stream signal TS after demodulation and channel decoding are performed. In this case, the stream signal may be a signal obtained by multiplexing an image signal, an audio signal, or a data signal.

The stream signal output from the demodulator 220 may be input to the controller 270 . After performing demultiplexing, image/audio signal processing, etc., the controller 270 may output an image through the display 20 and output an audio through the audio output unit 285 .

The external device interface unit 230 may transmit or receive data with an external device connected thereto. To this end, the external device interface unit 230 may include an A/V input/output unit (not shown).

The external device interface unit 230 may be connected to an external device such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (notebook), set-top box, etc. by wire/wireless and , it is also possible to perform input/output operations with an external device.

The A/V input/output unit may receive video and audio signals from an external device.

In addition, the external device interface unit 230 establishes a communication network with various remote control devices 300 to receive a control signal related to the operation of the image display device 100 from the remote control device 300 or display an image. Data related to the operation of the device 100 may be transmitted to the remote control device 300 .

The external device interface unit 230 may include a communication module (not shown) for short-range wireless communication with other electronic devices.

Through such a wireless communication unit (not shown), the external device interface unit 230 may transmit/receive data to/from an adjacent electronic device. In particular, the external device interface unit 230 may receive device information, executed application information, application image, and the like, from the mobile terminal in the mirroring mode.

The network interface unit 235 may provide an interface for connecting the image display device 100 to a wired/wireless network including an Internet network. For example, the network interface unit 235 may receive content or data provided by the Internet or a content provider or network operator through a network.

Meanwhile, the network interface unit 235 may include a communication module (not shown) for connection with a wired/wireless network. For example, the external device interface unit 230 and / or the network interface unit 235, Wi-Fi (Wireless Fidelity), Bluetooth (Bluetooth), Bluetooth low energy (Bluetooth Low Energy; BLE), Zigbee, Communication module for short-range communication such as near field communication (NFC), long-term evolution (LTE), LTE Advance (LTE-A), code division multiple access (CDMA), wideband CDMA (WCDMA), universal mobile telecommunications (UMTS) system) and a communication module for cellular communication such as Wireless Broadband (WiBro).

The storage unit 240 may store a program for processing and controlling each signal in the control unit 270 , or may store a signal-processed image, audio, or data signal. For example, the storage unit 240 stores application programs designed for the purpose of performing various tasks that can be processed by the control unit 270 , and upon request of the control unit 270 , selectively selects some of the stored application programs. can provide

The program stored in the storage unit 240 is not particularly limited as long as it can be executed by the control unit 270 .

The storage unit 240 may perform a function for temporarily storing an image, audio, or data signal received from an external device through the external device interface unit 230 .

The storage unit 240 may store information about a predetermined broadcast channel through a channel storage function such as a channel map.

The storage unit 240 may store various data received through the external device interface unit 230 , the network interface unit 235 , and/or the user input interface unit 250 .

9 illustrates an embodiment in which the storage unit 240 is provided separately from the control unit 270 , the scope of the present invention is not limited thereto, and the storage unit 240 may be included in the control unit 270 .

The storage unit 240 may include a volatile memory (eg, DRAM, SRAM, SDRAM, etc.), a non-volatile memory (eg, a flash memory), a hard disk drive (HDD), or a solid state drive (Solid). -state drive (SSD), etc.) may be included.

The user input interface unit 250 may transmit a signal input by the user to the control unit 270 or may transmit a signal from the control unit 270 to the user. For example, the user input interface unit 250 transmits/receives user input signals such as power on/off, channel selection, and screen setting from the remote control device 300 , or is provided in the image display device 100 . A user input signal input from a local key (not shown) such as a power key, a channel key, a volume key, and a setting value may be transmitted to the controller 270 .

The sensor unit 260 may include at least one sensor. For example, the sensor unit 260 may include a proximity sensor, a temperature/humidity sensor, an illuminance sensor, and the like.

The sensor unit 260 may measure a physical quantity or detect an operating state of the image display device 100 to convert the measured or sensed information into an electrical signal, and transmit the converted electrical signal to the control unit 270 . have.

The sensor unit 260 includes an optical signal transmitting device 51 and an optical signal receiving device 52 , a proximity sensor 61 , a piezoelectric sensor 71 , and/or a current supplying device 81 and a current sensing device 82 . ) may be included.

The controller 270 may include at least one processor, and may control the overall operation of the image display apparatus 100 by using the processor included therein. Here, the processor may be a general processor such as a central processing unit (CPU). Of course, the processor may be a dedicated device such as an ASIC or other hardware-based processor.

The control unit 270 demultiplexes a stream input through the tuner unit 210 , the demodulator 220 , the external device interface unit 230 , or the network interface unit 235 or processes the demultiplexed signals. , can generate and output a signal for video or audio output.

The controller 270 may determine whether an object exists adjacent to the opening 41 of the housing 30 . For example, when controlling the operation of the roller 143 , the control unit 270 may be configured to move the opening 41 of the housing 30 based on a sensing value received from at least one sensor included in the sensor unit 260 . It can be determined whether an object exists nearby.

When controlling the operation of the roller 143 , the controller 270 may control the optical signal to be transmitted through the optical signal transmitting device 51 .

At this time, the controller 270 determines whether an object exists adjacent to the opening 41 of the housing 30 by checking whether the optical signal is received through the optical signal receiving device 52 according to a preset condition. can do. For example, when the optical signal is not received through the optical signal receiving device 52 while the optical signal is transmitted through the optical signal transmitting device 51 , the controller 270 controls the optical signal receiving device 52 . When the size of the optical signal received through the signal is less than a preset size, it may be determined that an object exists adjacent to the opening 41 of the housing 30 .

The controller 270 may check a sensed value received from the piezoelectric sensor 71 when controlling the operation of the roller 143 . In this case, when the image display device 100 includes a plurality of piezoelectric sensors 71 , sensing values received from the plurality of piezoelectric sensors 71 may be checked, respectively.

On the other hand, when the sensing value received from the piezoelectric sensor 71 exceeds a predetermined value, the controller 270 may determine that the object is present at the upper end of the upper surface of the housing 30 .

Here, the preset value may be a value sensed by the piezoelectric sensor 71 when an object does not exist on the upper end of the upper surface of the housing 30 . At this time, when an object (eg, a wallet, a smart phone, etc.) is placed on the top of the upper surface of the housing 30 for a certain time, the sensing value of the piezoelectric sensor 71 exceeding a preset value is maintained, The sensed value of the piezoelectric sensor 71 exceeding a set predetermined value may be updated to a predetermined value that is a criterion for determining whether an object exists.

On the other hand, the control unit 270, when it is determined that the object is present at the upper end of the upper surface of the housing 30 for a preset time and the sensing value of the piezoelectric sensor 71 is changed by more than a predetermined standard, the housing 30 It may be determined that the object existing at the upper end of the upper surface of the stylus is movable and thus accessible to the opening 41 , and it may be determined that the object exists adjacent to the opening 41 of the housing 30 .

The control unit 270, when controlling the operation of the roller 143, through the current supply device 81, may control a current of less than a preset size (eg, 1mA) to flow in the housing 30, the current sensing A value sensed by the device 82 may be checked.

In this case, the control unit 270 may calculate an impedance value based on the sensed value of the current sensing device 82 , and determine whether an object in contact with the housing 30 exists based on the calculated impedance value. can For example, when the calculated impedance value is out of a predetermined reference range, the controller 270 may determine that an object in contact with the housing 30 exists.

Here, the predetermined reference range, which is a criterion for determining whether an object in contact with the housing 30 exists, is an impedance value (hereinafter referred to as a reference impedance value) when an object in contact with the housing 30 does not exist, and moisture. When the included object (eg, the user's body) comes into contact with the housing 30 , it may be determined according to a minimum difference in impedance values that can be calculated.

On the other hand, the control unit 270 may update the reference impedance value according to a change in the sensing value of the temperature/humidity sensor, etc., and determine the reference impedance value corresponding to the temperature, humidity, etc. when controlling the operation of the roller 143 . Thus, it can be determined whether there is an object in contact with the housing 30 .

Meanwhile, when it is determined that an object in contact with the housing 30 exists, the controller 270 determines whether the object in contact with the housing 30 is an object accessible to the opening 41 of the housing 30 . can do.

The control unit 270 determines that there is an object in contact with the housing 30 , and the impedance value calculated based on the sensing value of the current sensing device 82 is pre-stored in the storage unit 240 of the user's body. If it corresponds to the impedance value corresponding to the contact of the housing 30 , it is determined that the object in contact with the housing 30 is an object accessible to the opening 41 of the housing 30 , and is adjacent to the opening 41 of the housing 30 . Thus, it can be determined that the object exists.

On the other hand, when it is determined that an object in contact with the housing 30 is present, the controller 270 determines whether a predetermined object is present in proximity to at least one side of the housing 30 through the proximity sensor 61 . You may.

When it is determined that an object in contact with the housing 30 exists and a predetermined object is present in proximity to at least one side of the housing 30 through the proximity sensor 61 , the control unit 270 is configured to include the housing 30 . It may be determined that the object in contact with the housing 30 is an object accessible to the opening 41 of the housing 30 , and thus it may be determined that the object exists adjacent to the opening 41 of the housing 30 .

On the other hand, when it is determined that a predetermined object existing close to at least one side of the housing 30 corresponds to a living organism through the proximity sensor 61 , the control unit 270 approaches at least one side of the housing 30 . Accordingly, it may be determined that the existing living being is an object accessible to the opening 41 of the housing 30 , and thus it may be determined that the object exists adjacent to the opening 41 of the housing 30 . For example, the control unit 270 detects an infrared change due to radiation emitted by a predetermined object existing close to at least one side of the housing 30 through a PIR sensor, and according to the detected infrared change, the housing 30 ), it may be determined whether a predetermined object existing close to at least one side corresponds to a living organism.

When it is determined that an object exists adjacent to the opening 41 of the housing 30 , the controller 270 may control the roller 143 not to operate. For example, when it is determined that an object exists adjacent to the opening 41 of the housing 30 while the display 20 is being rolled down, the control unit 270 stops the operation of the roller 143 to , it is possible to control the display 20 not to roll-down any more.

When it is determined that an object exists adjacent to the opening 41 of the housing 30 , the controller 270 may output a warning message through the display 20 and/or the audio output unit 285 . For example, when it is determined that an object exists adjacent to the opening 41 of the housing 30 , the controller 270 generates a beep sound through a buzzer (not shown) included in the audio output unit 285 . (beep) can be printed.

Meanwhile, the controller 270 may determine the position of the object based on a sensing value received from at least one sensor included in the sensor unit 260 . For example, the controller 270 may determine the position of the object existing on the upper end of the upper surface of the housing 30 based on the sensed values received from the plurality of piezoelectric sensors 71 . For example, the controller 270 may determine the position of the object proximate to the housing 30 through the proximity sensor 61 .

In this case, when the warning message is output, the controller 270 may output a warning message including information on the position of the object.

The driving unit 275 may include a roller 143 on which the display 20 is wound and at least one motor (not shown).

The display panel 10 may be wound or unwound on the roller 143 according to the rotation of the motor. The rotation of the motor may be controlled by the controller 270 . In this case, the controller 270 may determine the height of the area exposed to the outside of the housing 30 among the entire area of the display panel 10 based on the degree of rotation of the roller 143 .

The display 280 (eg, the display 20 of FIG. 3 ) may include an image signal, a data signal, an OSD signal, a control signal, or an image signal and data received from the external device interface unit 230 processed by the controller 270 . A driving signal may be generated by converting a signal, a control signal, or the like. In this regard, it will be described with reference to FIG. 10 .

Referring to FIG. 10 , the display 280 may include a display panel 10 and a panel driver 281 .

The display panel 10 may include a plurality of pixels, and the plurality of pixels may be connected to a plurality of gate lines GL and data lines DL intersecting in a matrix form. A plurality of thin film transistors TFTs may be disposed at intersections of the plurality of gate lines GL and the data lines DL.

The plurality of pixels provided in the display panel 10 may include RGB sub-pixels. Alternatively, the plurality of pixels included in the display panel 10 may include RGBW sub-pixels. The display 280 may generate driving signals for a plurality of pixels by converting an image signal, a data signal, an OSD signal, a control signal, etc. processed by the controller 270 .

The panel driver 281 may drive the display panel 10 based on a control signal and a data signal transmitted from the controller 270 . The panel driver 281 may include a timing controller 282 , a gate driver 284 , and/or a data driver 286 .

The timing controller 282 may receive a control signal, an image signal, and the like from the controller 170 . The timing controller 282 may control the gate driver 284 and/or the data driver 286 in response to a control signal. The timing controller 282 may rearrange the image signal according to the specification of the data driver 286 and transmit it to the data driver 286 .

The gate driver 284 and the data driver 286 may supply a scan signal and an image signal to the display panel 10 through the gate line GL and the data line DL under the control of the timing controller 282 . have.

The data driver 286 may include a plurality of source driver integrated circuits (ICs) (not shown) corresponding to the plurality of data lines DL.

The display 280 may be a flexible display including an organic light emitting panel formed of an organic light emitting diode (OLED). The display panel 10 may be formed on a substrate made of a material having flexibility such as polyimide.

When the display panel 10 is an organic light emitting display panel including an organic light emitting diode (OLED), the plurality of pixels may be formed of an organic light emitting diode (OLED).

In addition, the display 280 may be capable of a three-dimensional display (3D display). The display 280 capable of a 3D display may be divided into a glasses-free type and a glasses type.

Meanwhile, the display 280 may be configured as a touch screen and used as an input device in addition to an output device.

The power supply unit 290 may supply the corresponding power throughout the image processing apparatus 100 . In particular, it is possible to supply power to the control unit 270 that can be implemented in the form of a system on chip (SOC), the display 280 for displaying an image, and the audio output unit 285 for outputting audio. have.

Specifically, the power supply unit 290 may include a converter (not shown) that converts AC power into DC power, and a Dc/Dc converter (not shown) that converts the level of DC power.

The power supply unit 290 may supply a common electrode voltage Vcom to the display panel 10 and may supply a gamma voltage to the data driver 286 .

The image signal processed by the controller 270 may be input to the display 280 and displayed as an image corresponding to the image signal. Also, the image signal processed by the control unit 270 may be input to an external output device through the external device interface unit 230 .

Although not shown in FIG. 9 , the controller 270 may include a demultiplexer (not shown), an image processor (not shown), and the like.

The audio output unit 285 may include an audio device such as a speaker and a buzzer, and may receive a signal processed by the control unit 270 and output it as a voice.

The audio signal processed by the controller 270 may be outputted to the audio output unit 285 . Also, the audio signal processed by the controller 270 may be input to an external output device through the external device interface unit 230 .

In addition, the controller 270 may control overall operations within the image processing apparatus 100 .

For example, the control unit 270 may control the tuner unit 210 to select a channel selected by the user or a broadcast corresponding to a pre-stored channel (Tuning).

Also, the controller 270 may control the image processing apparatus 100 according to a user command input through the user input interface unit 250 or an internal program.

Meanwhile, the controller 270 may control the display 280 to display an image. In this case, the image displayed on the display 280 may be a still image or a moving image, and may be a 2D image or a 3D image.

Meanwhile, the controller 270 may cause a predetermined 2D object to be displayed in the image displayed on the display 280 . For example, the object may be at least one of an accessed web screen (newspaper, magazine, etc.), an Electronic Program Guide (EPG), various menus, widgets, icons, still images, moving pictures, and text.

Meanwhile, the image processing apparatus 100 may further include a photographing unit (not shown). The photographing unit may photograph the user. The photographing unit may be implemented with one camera, but is not limited thereto, and may be implemented with a plurality of cameras. Meanwhile, the photographing unit may be embedded in the image processing apparatus 100 on the display 280 or disposed separately. Image information captured by the photographing unit may be input to the control unit 270 .

The controller 270 may determine the location of the user based on the image captured by the photographing unit. For example, the controller 270 may determine the distance (z-axis coordinate) between the user and the image processing apparatus 100 . In addition, the controller 270 may determine the x-axis coordinates and the y-axis coordinates in the display 280 corresponding to the user's location.

The controller 270 may detect the user's gesture based on each or a combination of an image captured by the photographing unit or a signal sensed from the sensor unit.

Meanwhile, the image display device 100 may further include an input unit (not shown). The input unit may be provided on one side of the main body of the image display device 100 . For example, the input unit may include a touch pad, a physical button, and the like.

The input unit may receive various user commands related to the operation of the image display apparatus 100 , and may transmit a control signal corresponding to the input command to the control unit 270 .

Meanwhile, the image display device 100 may be a fixed type or a mobile type digital broadcasting receiver capable of receiving digital broadcasting.

On the other hand, the block diagram of the image display device 100 shown in FIG. 9 is only a block diagram for an embodiment of the present invention, and each component of the block diagram is actually implemented according to the specifications of the image display device 100 . may be incorporated, added, or omitted.

That is, two or more components may be combined into one component, or one component may be subdivided into two or more components as needed. In addition, the function performed in each block is for explaining the embodiment of the present invention, and the specific operation or device does not limit the scope of the present invention.

The remote control device 300 may include various communication modules such as Wireless Fidelity (Wi-Fi), Bluetooth (Bluetooth), Bluetooth Low Energy (BLE), Zigbee, and Near Field Communication (NFC).

The remote control device 300 may transmit a user command to the user input interface unit 250 through the communication module.

In addition, the remote control device 300 may receive, through the communication module, an image, audio or data signal output from the user input interface unit 250 , and display it or output the audio signal from the remote control device 300 . have.

Referring to FIG. 11 , the image display apparatus 100 may check whether operation control of the roller 143 is performed in operation S1110 .

For example, when the power of the image display apparatus 100 is turned off, when the mode of the image display apparatus 100 is switched from the full-view mode to the zero-view mode, etc., the operation of the roller 143 It can be seen that the control is performed.

The image display apparatus 100 may generate a sensed value through at least one sensor included in the sensor unit 260 in operation S1120 .

For example, the image display device 100 includes an optical signal transmitter 51 and an optical signal receiver 52 included in the sensor unit 260 , a proximity sensor 61 , a piezoelectric sensor 71 , and/or Alternatively, the sensed value may be generated through the current supply device 81 and the current sensing device 82 .

In operation S1130 , the image display device 100 determines whether an object exists adjacent to the opening 41 of the housing 30 , based on the sensing value of at least one sensor included in the sensor unit 260 . can do.

For example, the image display device 100 may control the optical signal to be transmitted through the optical signal transmitting device 51 , and determine whether the optical signal is received through the optical signal receiving device 52 according to a preset condition. By checking, it can be determined whether an object exists adjacent to the opening 41 of the housing 30 .

Referring to FIG. 12A , for example, the image display device 100 determines whether an object exists adjacent to the opening 41 of the housing 30 based on a sensed value received from the piezoelectric sensor 71 . can do.

In operation S1201 , the image display apparatus 100 may determine whether the sensed value received from the piezoelectric sensor 71 exceeds a predetermined value. In this case, when the image display apparatus 100 includes the plurality of piezoelectric sensors 71 , it may be checked whether at least one of the sensing values received from the plurality of piezoelectric sensors 71 exceeds a predetermined value.

In operation S1202 , the image display device 100 determines whether the value of the piezoelectric sensor 71 is changed by more than a predetermined standard for a predetermined period of time when the value sensed by the piezoelectric sensor 71 exceeds a predetermined value. can be judged

In operation S1203, the image display device 100 determines that an object is present at the upper end of the upper surface of the housing 30 because the sensing value of the piezoelectric sensor 71 exceeds a predetermined value, and the piezoelectric sensor 71 When the sensing value of is changed by more than a predetermined standard, it is determined that the object existing at the top of the upper surface of the housing 30 is an object accessible to the opening 41 , and the object adjacent to the opening 41 of the housing 30 is can be considered to exist.

On the other hand, in the image display device 100, in operation S1204, the sensing value of the piezoelectric sensor 71 does not exceed a predetermined value, or the sensing value of the piezoelectric sensor 71 for a predetermined period of time is changed by more than a predetermined standard If not, it may be determined that the object does not exist adjacent to the opening 41 of the housing 30 .

For example, the image display apparatus 100 may determine whether an object exists adjacent to the opening 41 of the housing 30 based on a sensed value received from the piezoelectric sensor 71 .

Referring to FIG. 12B , for example, the image display device 100 determines whether an object exists adjacent to the opening 41 of the housing 30 based on an impedance value calculated according to a current flowing through the housing 30 . can determine whether

The image display device 100, in operation S1211, through the current supply device 81, can control the current less than a preset size (eg, 1mA) to flow in the housing 30, the current sensing device 82 ), an impedance value may be calculated based on the sensed value of .

The image display apparatus 100 may determine whether an object in contact with the housing 30 exists based on the calculated impedance value in operation S1212 . For example, when the calculated impedance value is out of a predetermined reference range, the image display apparatus 100 may determine that an object in contact with the housing 30 exists.

When it is determined that an object in contact with the housing 30 exists in operation S1213 , the image display device 100 detects a predetermined object close to at least one side of the housing 30 through the proximity sensor 61 . can determine whether

The image display device 100, in operation S1214, when a predetermined object is detected in proximity to at least one side of the housing 30 through the proximity sensor 61, the object in contact with the housing 30 is the housing 30 It may be determined that the object is accessible to the opening 41 of the , and it may be determined that the object exists adjacent to the opening 41 of the housing 30 .

On the other hand, in the image display device 100, in operation S1215, there is no object in contact with the housing 30, or a predetermined object close to at least one side of the housing 30 through the proximity sensor 61 is not detected. In this case, it may be determined that the object does not exist adjacent to the opening 41 of the housing 30 .

Referring back to FIG. 11 , in operation S1140 , when it is determined that an object does not exist adjacent to the opening 41 , the image display apparatus 100 may determine whether the operation of the roller 143 is stopped. have.

The image display apparatus 100 may perform operation control of the roller 143 again when the operation of the roller 143 is stopped in operation S1150 .

On the other hand, the image display apparatus 100, in operation S1160, may check whether the operation control for the roller 143 is completed.

For example, the image display device 100, when the power is off (off), the operation control for the roller 143 is completed, the display panel 10 is not exposed to the outside of the housing 30, It can be checked whether all of the interior of the housing 30 has been moved.

When the operation control for the roller 143 is not completed, the image display device 100 branches to operation S1120 and is adjacent to the opening 41 of the housing 30 based on the sensing value of at least one sensor. Thus, it is possible to continuously determine whether an object exists or not.

Meanwhile, the image display apparatus 100 may stop the operation of the roller 143 when it is determined that an object exists adjacent to the opening 41 in operation S1170 .

The image display device 100 may output a warning message through the display 280 and/or the audio output unit 285 in operation S1180, and branch to operation S1120, based on the sensing value of at least one sensor Thus, it is possible to continuously determine whether an object exists adjacent to the opening 41 of the housing 30 .

As described above, according to various embodiments of the present invention, when controlling the operation of the roller 143, it is accurately determined whether there is an object adjacent to the opening 41 of the housing 30 using various sensors, and the roller The operation of (143) can be appropriately controlled, and the occurrence of a safety accident can be prevented.

13 is an example of a flowchart for an operating method of an image display apparatus according to another embodiment of the present invention, and FIGS. 14A to 14C are diagrams referenced in the description of the operation method of the image display apparatus of FIG. 13 . .

Referring to FIG. 13 , the image display apparatus 100 may check whether operation control of the roller 143 is performed in operation S1301 . For example, when the power of the image display apparatus 100 is turned off, when the mode of the image display apparatus 100 is switched from the full-view mode to the zero-view mode, etc., the operation of the roller 143 It can be seen that the control is performed.

The image display apparatus 100 may generate a sensed value through at least one sensor included in the sensor unit 260 in operation S1302 . For example, the image display device 100 includes an optical signal transmitter 51 and an optical signal receiver 52 included in the sensor unit 260 , a proximity sensor 61 , a piezoelectric sensor 71 , and/or Alternatively, the sensed value may be generated through the current supply device 81 and the current sensing device 82 .

In operation S1303 , the image display device 100 determines whether an object exists adjacent to the opening 41 of the housing 30 based on the sensing value of at least one sensor included in the sensor unit 260 . can do. For example, the image display device 100 may control the optical signal to be transmitted through the optical signal transmitting device 51 , and determine whether the optical signal is received through the optical signal receiving device 52 according to a preset condition. By checking, it can be determined whether an object exists adjacent to the opening 41 of the housing 30 .

The image display apparatus 100 may check whether the mode of the image display apparatus 100 is set to the safe mode in operation S1304 . For example, when a command for setting the safe mode is received through the user input interface unit 250 , the image display apparatus 100 may set the mode of the image display apparatus 100 to the safe mode. Here, the safe mode is a mode of executing a function of inducing the user's interest toward the opening 41 of the housing 30 by using a remote control device 300 such as a remote control when controlling the operation of the roller 143 . can mean

The image display apparatus 100 may display a preset screen through the display 280 when the mode of the image display apparatus 100 is set to the safe mode in operation S1305 .

The image display apparatus 100 may determine whether a predetermined signal is received from an external device in operation S1306. For example, the image display apparatus 100 may determine whether a predetermined signal corresponding to a screen displayed through the display 280 is received from the remote control apparatus 300 .

Referring to FIGS. 14A and 14B , when the mode of the image display device 100 is set to the safe mode when controlling the operation of the roller 143 , through the display 20 exposed to the outside of the housing 30 , the current A screen including an indicator 1410 indicating that a function according to the safe mode is being executed and an indicator 1420 for inducing a user input may be displayed.

At this time, when the user presses the

channel keys

1430 and 1440 corresponding to the indicator 1420 for inducing a user input displayed on the screen among the channel keys included in the remote control device 300, the remote control device 300 A predetermined signal corresponding to the screen may be transmitted to the image display device 100 .

Referring back to FIG. 13 , in operation S1307 , the image display apparatus 100 may determine whether the operation of the roller 143 is being stopped.

The image display apparatus 100 may perform operation control of the roller 143 again when the operation of the roller 143 is stopped in operation S1308 .

On the other hand, the image display device 100, in operation S1309, may check whether the operation control for the roller 143 is completed. For example, the image display device 100, when the power is off (off), the operation control for the roller 143 is completed, the display panel 10 is not exposed to the outside of the housing 30, It can be checked whether all of the interior of the housing 30 has been moved.

When the operation control for the roller 143 is not completed, the image display device 100 branches to operation S1302 and is adjacent to the opening 41 of the housing 30 based on the sensing value of at least one sensor. Thus, it is possible to continuously determine whether an object exists or not.

On the other hand, the image display apparatus 100, when the display 20 is moved more than a predetermined standard according to the operation of the roller 143 in a state in which the mode of the image display apparatus 100 is set to the safe mode, S1305 and S1306 It may not perform any action.

14c , when the display 20 rolls down more than a predetermined standard according to the operation of the roller 143 in a state in which the mode of the image display device 100 is set to the safe mode, the housing 30 of the display 20 ) In consideration of the low probability of a safety accident occurring during the remaining time until the remaining part (h) exposed to the outside moves into the housing 30, even if a predetermined signal is not received from the external device thereafter, the roller 143 operation may not be stopped.

Referring back to FIG. 13 , in operation S1310 , when it is determined that an object is present adjacent to the opening 41 , or the mode of the image display apparatus 100 is set to the safe mode in operation S1310 , When a predetermined signal is not received from the external device, the operation of the roller 143 may be controlled to be stopped.

The image display apparatus 100 may output a warning message through the display 280 and/or the audio output unit 285 in operation S1311, and branch to operation S1302, based on the sensing value of at least one sensor Thus, it is possible to continuously determine whether an object exists adjacent to the opening 41 of the housing 30 . For example, when a predetermined signal corresponding to a screen displayed through the display 280 is not received in a state in which the mode of the image display apparatus 100 is set to the safe mode, the image display apparatus 100 may be configured to Among the channel keys included in 300 , a warning message including content induced to press a channel key corresponding to the screen may be output.

As described above, according to various embodiments of the present invention, by using an external device such as a remote control to induce the user's interest toward the opening 41 of the housing 30 when controlling the operation of the roller 143, safety accidents are prevented. occurrence can be prevented more reliably.

The accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical spirit disclosed herein is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and scope of the present invention It should be understood to include water or substitutes.

Meanwhile, the method of operating an image display apparatus of the present invention can be implemented as processor-readable codes on a processor-readable recording medium provided in the image display apparatus. The processor-readable recording medium includes all types of recording devices in which data readable by the processor is stored. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc., and also includes those implemented in the form of carrier waves such as transmission over the Internet. . In addition, the processor-readable recording medium is distributed in a computer system connected through a network, so that the processor-readable code can be stored and executed in a distributed manner.

In addition, although preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention as claimed in the claims In addition, various modifications are possible by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

Claims

housing;

a roller disposed inside the housing;

a display panel wound or unwound on the roller and exposed to the outside of the housing through an opening of the housing;

at least one sensor; and

A control unit for controlling the operation of the roller so that the display panel is rolled-up or rolled-down,

The control unit is

When controlling the operation of the roller, based on the sensing value of the at least one sensor, it is determined whether an object exists adjacent to the opening of the housing,

When it is determined that the object is present adjacent to the opening of the housing, the image display apparatus according to claim 1 , wherein the roller is not operated.
According to claim 1,

Further comprising an audio device for outputting a voice,

The control unit is

When it is determined that the object exists adjacent to the opening of the housing, a warning message is output through the audio device,

After outputting the warning message, it is characterized in that it is determined again whether the object exists adjacent to the opening of the housing.
3. The method of claim 2,

The at least one sensor includes an optical signal transmitter for transmitting an optical signal toward the opening of the housing, and an optical signal receiver for receiving the optical signal,

The control unit is

When controlling the operation of the roller, an optical signal is transmitted through the optical signal transmitter,

When the optical signal is not received through the optical signal receiver according to a preset condition, it is determined that the object is present adjacent to the opening of the housing.
4. The method of claim 3,

The optical signal transmitter is disposed adjacent to one side of the opening of the housing,

and the optical signal receiving device is disposed adjacent to the other side of the opening of the housing to face the optical signal transmitting device.
5. The method of claim 4,

The control unit is

When the size of the optical signal received through the optical signal receiver does not satisfy the size according to the preset condition, it is determined that the object is present adjacent to the opening of the housing. .
3. The method of claim 2,

The at least one sensor includes a piezoelectric sensor disposed adjacent to a lower end of one surface of the housing, where the opening of the housing is located,

The control unit is

The image display apparatus according to claim 1, wherein when controlling the operation of the roller, it is determined whether the object is present adjacent to the opening of the housing based on a value sensed by the piezoelectric sensor.
7. The method of claim 6,

The control unit is

When the sensing value of the piezoelectric sensor exceeds a predetermined value when controlling the operation of the roller, it is determined that an object is present on the upper end of one surface of the housing,

For a preset time, when it is determined that the object is present on the upper end of one surface of the housing and the sensing value of the piezoelectric sensor is changed by more than a predetermined standard, it is determined that the object exists adjacent to the opening of the housing A video display device, characterized in that.
8. The method of claim 7,

The at least one sensor includes a plurality of the piezoelectric sensors,

The plurality of piezoelectric sensors are respectively disposed adjacent to the corners of one surface of the housing,

The control unit is

Based on the sensing values of the plurality of piezoelectric sensors, determining the position of the object existing on the upper end of one surface of the housing,

and outputting the warning message including information on the position of the object.
3. The method of claim 2,

The housing is formed of a metal material,

The at least one sensor includes at least one current supply device for supplying a current to the housing, and at least one current sensing device for sensing a current flowing through the housing,

The control unit is

When controlling the operation of the roller, a current less than a preset size is controlled to flow through the housing through the at least one current supply device,

and determining whether the object exists adjacent to the opening of the housing based on a value sensed by the at least one current sensing device.
10. The method of claim 9,

The control unit is

determining whether an object in contact with the housing exists by calculating an impedance value according to the sensing value of the at least one current sensing device;

When it is determined that there is an object in contact with the housing, it is determined whether the object in contact with the housing is adjacent to the opening of the housing.
11. The method of claim 10,

The at least one sensor further comprises a proximity sensor,

The control unit is

When the calculated impedance value is out of a predetermined reference range, it is determined that an object in contact with the housing exists;

When it is determined that there is an object in contact with the housing, it is determined whether a predetermined object exists in proximity to at least one side of the housing through the proximity sensor,

When it is determined that the predetermined object exists close to at least one side of the housing, it is determined that the object exists adjacent to the opening of the housing.
3. The method of claim 2,

Further comprising a wireless communication device for performing wireless communication with an external device,

The control unit is

When a safety mode is set when controlling the operation of the roller, it is determined whether a predetermined signal is received from the external device through the wireless communication device,

When the predetermined signal is not received through the wireless communication device, even when it is determined that the object does not exist adjacent to the opening of the housing, the image display device, characterized in that the control so that the roller does not operate.
13. The method of claim 12,

The control unit is

While the display panel is rolled-down, a preset screen is displayed through the display panel,

When the predetermined signal corresponding to the preset screen is not received through the wireless communication device, the operation of the roller is stopped.
14. The method of claim 13,

The control unit is

When the display panel rolls down more than a predetermined standard, even when the predetermined signal is not received through the wireless communication device, the operation of the roller is not stopped.
In the operating method of the video display device,

Included in the image display device when controlling the operation of a roller disposed inside the housing of the image display device so that the display panel of the image display device rolls up or rolls down determining whether an object exists adjacent to the opening of the housing based on the sensed value of at least one sensor; and

and controlling the roller not to operate when it is determined that the object is present adjacent to the opening of the housing.