KR20240018903A - Display device - Google Patents

Abstract

main panel; An auxiliary panel located on the back of the main panel; The display device, which is located on the back of the main panel and includes a panel driving unit that moves the auxiliary panel to the side of the main panel, can expand and contract the screen, so it can be used by reducing the size when not in use. Accordingly, if a larger screen is required, the screen can be expanded and usability can be expanded.

Description

Display device {DISPLAY DEVICE}

The present invention relates to a display device capable of providing screens of various sizes.

As the information society develops, the demand for display devices is increasing in various forms, and in response to this, display devices in recent years include Liquid Crystal Display (LCD), Field Emission Display (FED), These include plasma display panels (PDP) and electroluminescence devices.

The liquid crystal panel of the liquid crystal display device includes a liquid crystal layer, a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween, and can display images using light provided from a backlight unit.

As an example of an electroluminescence device, an active matrix type organic light emitting display device is commercially available. Since organic light emitting display devices are self-luminous devices, they do not have a backlight compared to liquid crystal display devices and have advantages in response speed, viewing angle, etc., so they are attracting attention as next-generation displays.

Recently, materials such as OLED emit light on their own without a backlight structure, making it possible to implement a curved display panel, making it possible to implement a curved display device.

Recently, as the usage of display devices has become more diverse, screens of different sizes may be required depending on the situation. For example, the living room and the bedroom are different sizes, so different sized screens may be appropriate depending on the distance. Additionally, since the aspect ratio of the output video varies, such as 4:3 or 16:9, it is necessary to adjust the screen size accordingly.

Conventional display devices have a fixed size, so there are cases where multiple displays are used to suit needs, or images are viewed with the top and bottom or left and right cut off according to the screen ratio, so the need for display devices that meet the various needs of users is increasing.

The purpose of the present invention is to provide a display device that can provide screens of various sizes.

main panel; An auxiliary panel located on the back of the main panel; A display device is provided that is located on the back of the main panel and includes a panel driving unit that moves the auxiliary panel in a lateral direction of the main panel.

The auxiliary panels can be moved so that a pair is disposed on both sides of the main panel.

The auxiliary panel may be placed above the main panel.

The panel driving unit may include an actuator whose end is coupled to an end of the auxiliary panel and whose length is variable.

The end of the actuator may include an elastic portion that pushes the auxiliary panel to the front after being extended to its maximum length.

The end of the actuator may include an electromagnet that applies force in a direction opposite to the elasticity of the elastic portion when a contraction signal is received.

The panel driving unit includes a motor located on the back of the main panel and providing rotational force; a rotation module located side by side on one side of the motor and coupled to the auxiliary panel; It may include a timing belt connecting the motor and the rotation module.

a first tooth formed on the motor and onto which the timing belt engages; It includes second teeth formed on the rotation module and onto which the timing belt engages, and the number of second teeth may be greater than the number of first teeth.

The motor may include an inclined surface on the rear surface so that the other side is thinner than one side.

The rotation range of the rotation module may be 180° or more.

The main panel may further include guide rails located at both ends in a direction perpendicular to the moving direction of the auxiliary panel.

According to one aspect of the present invention, the display device can expand and contract the screen, so that it can be used by reducing the size when not in use, and the screen can be expanded when a large screen is required depending on the situation.

The display size can be changed, increasing usability.

The effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

1 is a block diagram for explaining each configuration of the display device of the present invention.
Figure 2 is a front view showing an example of the display device of the present invention.
Figure 3 is a view showing the rear of the embodiment of Figure 2.
Figures 4 and 5 are diagrams showing another embodiment of the present invention.
Figure 6 is a diagram showing another embodiment of the display device of the present invention.
Figure 7 is a perspective view showing the hinge module of Figure 6.
Figure 8 is a diagram showing the operation of moving the auxiliary panel of the present invention using a hinge module.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted. The suffixes “module” and “part” for components used in the following description are given or used interchangeably only for the ease of preparing the specification, and do not have distinct meanings or roles in themselves. Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted. In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Meanwhile, the video display device described in this specification is, for example, an intelligent video display device that adds a computer support function to the broadcast reception function, and is faithful to the broadcast reception function while adding an Internet function, etc., such as a handwriting input device and a touch screen. Alternatively, it can be equipped with a more convenient interface such as a spatial remote control. In addition, by supporting wired or wireless Internet functions, it is possible to connect to the Internet and a computer and perform functions such as email, web browsing, banking, or gaming. A standardized general-purpose OS can be used for these various functions.

Therefore, in the video display device described in the present invention, for example, various applications can be freely added or deleted on a general-purpose OS kernel, so various user-friendly functions can be performed. More specifically, the video display device may be, for example, a network TV, HBBTV, smart TV, etc., and in some cases, may also be applied to a smartphone.

Figure 1 is a block diagram for explaining each configuration of the display device 100. The display device 100 includes a broadcast reception unit 110, an external device interface unit 171, a network interface unit 172, a storage unit 140, a user input interface unit 173, an input unit 130, and a control unit 180. , may include a display 150, an audio output unit 160, and/or a power supply unit 190.

The broadcast reception unit 110 may include a tuner unit 111 and a demodulation unit 112.

Meanwhile, unlike the drawing, the display device 100 includes only the external device interface unit 171 and the network interface unit 172 among the broadcast receiver 110, the external device interface unit 171, and the network interface unit 172. It is also possible to do so. That is, the display device 100 may not include the broadcast reception unit 110.

The tuner unit 111 may select a broadcast signal corresponding to a channel selected by the user or all previously stored channels among broadcast signals received through an antenna (not shown) or a cable (not shown). The tuner unit 111 can 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, the tuner unit 111 may convert it 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 video or audio signal (CVBS/SIF). That is, the tuner unit 111 can process digital broadcasting signals or analog broadcasting signals. The analog base band video or audio signal (CVBS/SIF) output from the tuner unit 111 may be directly input to the control unit 180.

Meanwhile, the tuner unit 111 can sequentially select broadcast signals of all broadcast channels stored through a channel memory function among received broadcast signals and convert them into intermediate frequency signals or baseband video or audio signals.

Meanwhile, the tuner unit 111 may be equipped with multiple tuners in order to receive broadcast signals of multiple channels. Alternatively, a single tuner that simultaneously receives broadcast signals from multiple channels is also possible.

The demodulator 112 may receive the digital IF signal (DIF) converted by the tuner unit 111 and perform a demodulation operation. The demodulator 112 may perform demodulation and channel decoding and then output a stream signal (TS). At this time, the stream signal may be a multiplexed video signal, audio signal, or data signal.

The stream signal output from the demodulator 112 may be input to the control unit 180. After performing demultiplexing and video/audio signal processing, the control unit 180 can output video through the display 150 and audio through the audio output unit 160.

The sensing unit 120 refers to a device that detects changes within the display device 100 or external changes. For example, proximity sensor, illumination sensor, touch sensor, infrared sensor, ultrasonic sensor, optical sensor, e.g. , camera), a voice sensor (e.g., a microphone), a battery gauge, and an environmental sensor (e.g., a hygrometer, a thermometer, etc.).

The control unit 180 can check the status of the display device 100 based on the information collected by the sensing unit 120 and notify the user when a problem occurs or control it to maintain the best condition by adjusting it on its own.

In addition, the content, image quality, size, etc. of the image provided to the display module 180 can be controlled differently depending on the viewer or surrounding illumination detected by the sensing unit to provide an optimal viewing environment. As smart TVs advance, the number of functions mounted on display devices increases, and the number of sensing units 20 also increases.

The input unit 130 may be provided on one side of the main body of the display device 100. For example, the input unit 130 may include a touch pad, physical buttons, etc. The input unit 130 can receive various user commands related to the operation of the display device 100 and transmit control signals corresponding to the input commands to the control unit 180.

Recently, as the size of the bezel of the display device 100 has become smaller, the number of display devices 100 in which the input unit 130 in the form of a physical button exposed to the outside has been minimized has increased. Instead, a minimal physical button is located on the back or side, and user input can be received through the remote control device 200 through a touchpad or a user input interface unit 173, which will be described later.

The storage unit 140 may store programs for processing and controlling each signal in the control unit 180, or may store processed video, audio, or data signals. For example, the storage unit 140 stores application programs designed for the purpose of performing various tasks that can be processed by the control unit 180, and selects some of the stored application programs at the request of the control unit 180. can be provided.

Programs stored in the storage unit 140 are not particularly limited as long as they can be executed by the control unit 180. The storage unit 140 may perform a function for temporarily storing video, voice, or data signals received from an external device through the external device interface unit 171. The storage unit 140 can store information about a certain broadcast channel through a channel memory function such as a channel map.

Although FIG. 1 shows an embodiment in which the storage unit 140 is provided separately from the control unit 180, the scope of the present invention is not limited thereto, and the storage unit 140 may be included in the control unit 180.

The storage unit 140 includes volatile memory (e.g., DRAM, SRAM, SDRAM, etc.), non-volatile memory (e.g., flash memory, hard disk drive (HDD), and solid state drive (Solid- It may include at least one of state drive (SSD), etc.).

The display 150 can generate a driving signal by converting the video signal, data signal, OSD signal, and control signal processed by the control unit 180 or the video signal, data signal, and control signal received from the interface unit 171. there is. The display 150 may include a display panel 181 having a plurality of pixels.

A plurality of pixels provided in the display panel may include RGB subpixels. Alternatively, a plurality of pixels provided in the display panel may include RGBW subpixels. The display 150 may convert image signals, data signals, OSD signals, control signals, etc. processed by the control unit 180 to generate driving signals for a plurality of pixels.

The display 150 may be a plasma display panel (PDP), liquid crystal display (LCD), organic light emitting diode (OLED), or flexible display, and may also be capable of a 3D display. there is. The 3D display 150 can be divided into a glasses-free type and a glasses type.

The display device includes a display module that occupies most of the front area and a case that covers the back side of the display module and packages the display module.

Recently, the display device 100 is a display module 150 that can be bent, such as LED (Light Emitting Diodes) or OLED (Organic Light Emitting Diodes), to implement a curved screen beyond a flat surface. can be used.

LCDs, which were mainly used in the past, received light through a backlight unit because it was difficult for the LCD to emit light on its own. The backlight unit is a device that uniformly supplies the light source and the light supplied from the light source to the liquid crystal located on the front. As the backlight unit became increasingly thinner, it was possible to implement a thin LCD, but it is difficult to implement the backlight unit using a flexible material, and when the backlight unit is bent, it is difficult to supply light uniformly to the liquid crystal, causing a problem in that the brightness of the screen changes.

On the other hand, in the case of LED or OLED, each element that makes up the pixel emits light on its own, so it can be implemented in a curved manner without using a backlight unit. In addition, since each element emits its own light, even if the positional relationship with neighboring elements changes, its own brightness is not affected, so the flexible display module 150 can be implemented using LED or OLED.

OLED (Organic Light Emitting Diode) panels appeared in earnest in the mid-2010s and are quickly replacing LCD in the small and medium-sized display market. OLED is a display made using a self-luminous phenomenon that emits light when a current flows through a fluorescent organic compound. The picture quality response speed is faster than that of LCD, so there is almost no afterimage when displaying a video.

OLED uses three types of phosphor organic compounds, including red, green, and blue, which have a self-luminous function. Electrons and positively charged particles injected from the cathode and anode are used to emit light. Since it is a light-emitting display product that utilizes the phenomenon of self-emitting light by combining within organic materials, there is no need for a backlight (halo device) that reduces color.

The LED (Light Emitting Diode) panel is a technology that uses one LED element as one pixel, and the size of the LED element can be reduced compared to the prior art, making it possible to implement a flexible display module 150. Previously, devices called LED TVs used LEDs as a light source for the backlight unit that supplied light to the LCD, but the LEDs themselves did not constitute a screen.

The display module includes a display panel, a coupling magnet located on the back of the display panel, a first power supply, and a first signal module. The display panel may include a plurality of pixels (R, G, B). A plurality of pixels (R, G, B) may be formed in each area where a plurality of data lines and a plurality of gate lines intersect. A plurality of pixels (R, G, B) may be placed or arranged in a matrix form.

For example, the plurality of pixels (R, G, B) include a red (R) subpixel, a green (Green, 'G') subpixel, and a blue (Blue, 'B') subpixel. It can be included. The plurality of pixels (R, G, B) may further include a white (hereinafter referred to as 'W') subpixel.

The side of the display module 150 that displays images may be referred to as the front or front side. When the display module 150 displays an image, the side from which the image cannot be observed may be referred to as the rear or back side. Meanwhile, the display 150 is configured as a touch screen and can be used as an input device in addition to an output device.

The audio output unit 160 receives the audio-processed signal from the control unit 180 and outputs it as audio.

The interface unit 170 serves as a passageway for various types of external devices connected to the display device 100. The interface unit may include a wired method of transmitting and receiving data through a cable as well as a wireless method using an antenna.

The interface unit 170 includes a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, and a port for connecting a device equipped with an identification module ( port), an audio input/output (I/O) port, a video input/output (I/O) port, and an earphone port.

An example of a wireless method may include the broadcasting receiver 110 described above, and may include not only broadcasting signals, but also mobile communication signals, short-distance communication signals, and wireless Internet signals.

The external device interface unit 171 can transmit or receive data with a connected external device. To this end, the external device interface unit 171 may include an A/V input/output unit (not shown).

The external device interface unit 171 can be connected wired/wireless to external devices such as DVD (Digital Versatile Disk), Blu ray, game device, camera, camcorder, computer (laptop), set-top box, etc. You can also perform input/output operations with external devices.

In addition, the external device interface unit 171 establishes a communication network with various remote control devices 200 to receive control signals related to the operation of the display device 100 from the remote control device 200 or to receive control signals related to the operation of the display device 100 from the remote control device 200. ) can be transmitted to the remote control device 200.

The external device interface unit 171 may include a wireless communication unit (not shown) for short-distance wireless communication with other electronic devices. Through this wireless communication unit (not shown), the external device interface unit 171 can exchange data with an adjacent mobile terminal. In particular, the external device interface unit 171 can receive device information, running application information, application images, etc. from the mobile terminal in mirroring mode.

The network interface unit 172 may provide an interface for connecting the display device 100 to a wired/wireless network including an Internet network. For example, the network interface unit 172 may receive content or data provided by the Internet or a content provider or network operator through a network. Meanwhile, the network interface unit 172 may include a communication module (not shown) for connection to a wired/wireless network.

The external device interface unit 171 and/or the network interface unit 172 supports Wi-Fi (Wireless Fidelity), Bluetooth, Bluetooth Low Energy (BLE), Zigbee, and NFC (Near Field Communication). ), communication modules for short-range communication such as LTE (long-term evolution), LTE-A (LTE Advance), CDMA (code division multiple access), WCDMA (wideband CDMA), UMTS (universal mobile telecommunications system), WiBro ( It may include a communication module for cellular communication such as Wireless Broadband).

The user input interface unit 173 may transmit a signal input by the user to the control unit 180 or transmit a signal from the control unit 180 to the user. For example, transmitting/receiving user input signals such as power on/off, channel selection, and screen settings from the remote control device 200, or local keys such as power key, channel key, volume key, and setting value (not shown). The user input signal input from the control unit 180 is transmitted to the control unit 180, the user input signal input from the sensor unit (not shown) that senses the user's gesture is transmitted to the control unit 180, or the signal from the control unit 180 is transmitted to the control unit 180. It can be transmitted to the sensor unit.

The control unit 180 may include at least one processor, and may control the overall operation of the display device 100 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 another hardware-based processor.

The control unit 180 demultiplexes a stream input through the tuner unit 111, the demodulator 112, the external device interface unit 171, or the network interface unit 172, or processes the demultiplexed signals, Signals for video or audio output can be generated and output.

The video signal processed by the control unit 180 may be input to the display 150 and displayed as an image corresponding to the video signal. Additionally, the image signal processed by the control unit 180 may be input to an external output device through the external device interface unit 171.

The voice signal processed by the control unit 180 may be output as sound to the audio output unit 160. Additionally, the voice signal processed by the control unit 180 may be input to an external output device through the external device interface unit 171. Although not shown in FIG. 2, the control unit 180 may include a demultiplexer, an image processor, etc. This will be described later with reference to FIG. 3.

In addition, the control unit 180 may control overall operations within the display device 100. For example, the control unit 180 may control the tuner unit 111 to select (tuning) a broadcast corresponding to a channel selected by the user or a previously stored channel.

Additionally, the control unit 180 can control the display device 100 by a user command or internal program input through the user input interface unit 173. Meanwhile, the control unit 180 can control the display 150 to display an image. At this time, the image displayed on the display 150 may be a still image or a moving image, and may be a 2D image or a 3D image.

Meanwhile, the control unit 180 can cause a certain 2D object to be displayed in the image displayed on the display 150. For example, the object may be at least one of a connected web screen (newspaper, magazine, etc.), EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, and text.

Meanwhile, the control unit 180 may modulate and/or demodulate the signal using an amplitude shift keying (ASK) method. Here, the amplitude shift keying (ASK) method may refer to a method of modulating a signal by varying the amplitude of the carrier wave according to the data value, or restoring an analog signal to a digital data value according to the amplitude of the carrier wave.

For example, the control unit 180 may modulate an image signal using an amplitude shift keying (ASK) method and transmit it through a wireless communication module.

For example, the control unit 180 may demodulate and process an image signal received through a wireless communication module using an amplitude shift keying (ASK) method.

Through this, the display device 100 can easily transmit and receive signals with other video display devices placed adjacent to it, even without using a unique identifier such as a MAC address (Media Access Control Address) or a complex communication protocol such as TCP/IP. You can.

Meanwhile, the display device 100 may further include a photographing unit (not shown). The photography unit can photograph the user. The photographing unit can be implemented with one camera, but is not limited to this, and can also be implemented with a plurality of cameras. Meanwhile, the photographing unit may be embedded in the display device 100 on the upper part of the display 150 or may be placed separately. Image information captured by the photographing unit may be input to the control unit 180.

The control unit 180 may recognize the user's location based on the image captured by the photographing unit. For example, the control unit 180 may determine the distance (z-axis coordinate) between the user and the display device 100. In addition, the control unit 180 can determine the x-axis coordinate and y-axis coordinate in the display 150 corresponding to the user's location.

The control unit 180 may detect the user's gesture based on each or a combination of images captured from the photographing unit or signals detected from the sensor unit.

The power supply unit 190 may supply corresponding power throughout the display device 100. In particular, power can be supplied to the control unit 180, which can be implemented in the form of a system on chip (SOC), the display 150 for displaying images, and the audio output unit 160 for audio output. there is.

Specifically, the power supply unit 190 may include a converter (not shown) that converts AC power to DC power and a Dc/Dc converter (not shown) that converts the level of DC power.

Meanwhile, the power supply unit 190 receives power from the outside and serves to distribute power to each component. The power supply unit 190 may use a method of supplying AC power by directly connecting to an external power source, and may include a power supply unit 190 that includes a battery and can be used by charging.

In the former case, it is used by connecting a wired cable and is difficult to move or has a limited range of movement. In the latter case, it is free to move, but the weight and volume increase as much as the battery, and for charging, it must be connected directly to the power cable for a certain period of time or combined with a charging stand (not shown) that supplies power.

The charging holder can be connected to the display device through a terminal exposed to the outside, or the built-in battery can be charged when approached wirelessly.

The remote control device 200 may transmit user input to the user input interface unit 173. For this purpose, the remote control device 200 may use Bluetooth, Radio Frequency (RF) communication, Infrared Radiation communication, Ultra-wideband (UWB), ZigBee, etc. In addition, the remote control device 200 may receive video, audio, or data signals output from the user input interface unit 173, and display them or output audio signals on the remote control device 200.

Meanwhile, the above-described display device 100 may be a fixed or mobile digital broadcasting receiver capable of receiving digital broadcasting.

Meanwhile, the block diagram of the display device 100 shown in FIG. 1 is only a block diagram for an embodiment of the present invention, and each component of the block diagram is integrated according to the specifications of the display device 100 that is actually implemented. It may be added or omitted.

That is, as needed, two or more components may be combined into one component, or one component may be subdivided into two or more components. In addition, the functions performed by each block are for explaining embodiments of the present invention, and the specific operations or devices do not limit the scope of the present invention.

Figure 2 is a front view showing an example of the display device 100. Referring to (a) of FIG. 2, the display device 100 has a first long side (LS1), a second long side (LS2) opposite the first long side (LS1), and a first long side (LS1). A rectangular body including a first short side (SS1) adjacent to (LS1) and the second long side (LS2), and a second short side (SS2) opposite the first short side (SS1) You can have

Here, the first short side area SS1 is referred to as the first side area, the second short side area SS2 is referred to as the second side area opposite the first side area, and the second short side area SS2 is referred to as the second side area opposite the first side area. 1 The long side area (LS1) is adjacent to the first and second side areas and is called the third side area located between the first and second side areas, and the second long side area is called the third side area. It is possible to refer to (LS2) as a fourth side area adjacent to the first and second side areas, located between the first and second side areas, and facing the third side area. do.

In addition, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are shown and described as being longer than the lengths of the first and second short sides (SS1, SS2), but the first and second long sides (LS1, It may also be possible when the length of LS2) is approximately the same as the length of the first and second short sides (SS1 and SS2).

The side on which the display device 100 displays images may be referred to as the front or front side. When the display device 100 displays an image, the side from which the image cannot be observed may be referred to as the rear or back side. When looking at the display device 100 from the front or front, the first long side LS1 may be referred to as the upper side or upper surface. Likewise, the second long side LS2 may be referred to as the lower side or lower surface. Likewise, the first short side (SS1) can be called the right or right side, and the second short side (SS2) can be called the left or left side.

In addition, the first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) may be referred to as edges of the display device 100. Additionally, the point where the first long side (LS1), the second long side (LS2), the first short side (SS1), and the second short side (SS2) meet each other may be called a corner. For example, the point where the first long side (LS1) and the first short side (SS1) meet is the first corner (C1), and the point where the first long side (LS1) and the second short side (SS2) meet is the second corner (C2) ), the point where the second short side (SS2) and the second long side (LS 2) meet is the third corner (C3), and the point where the second long side (LS2) and the first short side (SS1) meet is the fourth corner (C4) ) can be.

Here, the direction from the first short side (SS1) to the second short side (SS2) or from the second short side (SS2) to the first short side (SS1) can be referred to as the left-right direction (LR). The direction from the first long side LS1 to the second long side LS2 or from the second long side LS2 to the first long side LS1 may be referred to as the vertical direction UD.

The display device 100 of the present invention is characterized in that its size is variable. It can be expanded upward as shown in (b) of FIG. 2. The part that makes up the front screen in the first contracted state as shown in (a) of FIG. 2 is called the first display, and the part added in the expanded second state as shown in (b) of FIG. 2 is called the second display. In the embodiment of FIG. 2(b), the second display is arranged above the first display, but it may be located laterally as in the embodiment of FIG. 4.

Figure 3 is a view showing the rear of the embodiment of Figure 2. Figure 3 (a) is the first state and (b) is the second state. The part where the above-described first display is located is called the main panel 310, and the part where the second display is located and moves is called the auxiliary panel 320.

The auxiliary panel 320, on which the second display is located in the front, is located on the back of the main panel 310 in the first state as shown in (a) of FIG. 3, and when switched to the second state, as shown in (b) of FIG. 3. It can be moved and placed side by side with the main panel 310.

The member that moves the auxiliary panel 320 is called a panel driving unit, and may be located on the back of the main panel 310 as shown in FIG. 3.

The auxiliary panel 320 of this embodiment slides and moves to the upper side of the main panel 310, and may include an actuator 330 for the slide movement. The main body of the actuator 330 is located on the back of the main panel 310, and the end of the actuator 330 can be coupled to the auxiliary panel 320. Although the actuator 330 is shown as one in the drawing, a plurality of actuators 330 may be provided for left and right balance.

As the length of the actuator 330 increases, it switches from the first state to the second state, and when the length of the actuator 330 reaches its maximum, the auxiliary panel 320 can be located above the main panel 310.

At this time, in order to eliminate the step between the main panel 310 and the auxiliary panel 320, an elastic portion for moving the auxiliary panel 320 in the front direction may be included at the end of the actuator 330. The elastic portion maintains a compressed state because the auxiliary panel 320 is located behind the main panel 310. When the auxiliary panel 320 and the main panel 310 are released from the overlapping state, they are tensioned to bring the auxiliary panel 320 to the front. It can be moved in any direction. The auxiliary panel 320 moves to the front, and the first display and the second display can implement a continuous screen.

When switching from the second state to the first state, a recovery unit may be included to pull the auxiliary panel 320 back toward the rear. The recovery part provides a force to press the elastic part. For example, if an electromagnet is placed at the end of the actuator 330 and a current is applied to the electromagnet, a magnetic force is generated, which pulls the magnetic material located on the auxiliary panel 320 and moves the auxiliary panel. (320) can be moved in the rear direction.

When the auxiliary panel 320 moves in the thickness direction toward the back of the main panel 310, the length of the actuator 330 becomes shorter and the auxiliary panel 320 can be positioned on the back of the main panel 310 again.

To guide the movement of the auxiliary panel 320, guide rails 333 may be provided on both sides (left and right in the drawing) perpendicular to the moving direction of the auxiliary panel 320, as shown in FIG. 4.

The guide rail serves to assist the auxiliary panel 320 to slide without shaking.

Figures 4 and 5 are diagrams showing another embodiment of the present invention. The auxiliary panel 320 may be located lateral to the main panel 310. The auxiliary panel 320 of this embodiment includes a left and right pair.

When the auxiliary panel 320 is located only on one side, unlike the vertical direction, the balance of the stand that holds the display device in the lateral direction is disturbed, so the auxiliary panel 320 is symmetrical left and right as shown in Figures 4 (b) and 5 (b). A pair of panels 320 may be provided.

The actuator 330 of this embodiment also has a left and right pair like the auxiliary panel 320, and expands and contracts in different directions. At this time, in order to balance the display device 100, the left and right sides can be driven simultaneously.

Figure 6 is a diagram showing another embodiment of the display device 100 of the present invention. The auxiliary panel 320 of this embodiment may be disposed on the left and right sides of the main panel 310 in the same manner as the embodiment of FIG. 5.

This embodiment is characterized in that the auxiliary panel 320 does not slide, but is opened and closed using a hinge module 340 located between the main panel 310 and the auxiliary panel 320. The panel driving unit in this embodiment is the hinge module 340. By using the hinge module 340, the auxiliary panel 320 can be switched between the first state and the second state by rotating around the first edge in contact with the main panel 310.

In the above-described embodiment, the second display of the auxiliary panel 320 faces forward in both the first and second states, but in the present embodiment, the second display faces the back in the first state and the front in the second state. You can.

Figure 6 shows only an embodiment of the hinge module 340 that rotates the auxiliary panel 320 located in the side direction, but is not limited to this and uses the hinge module 340 to provide auxiliary support in the upward direction as shown in Figure 2. The display device 100 where the panel 320 is located can also be implemented.

Figure 7 is a perspective view showing the hinge module 340 of Figure 6, and Figure 8 is a diagram showing the operation of moving the auxiliary panel 320 of the present invention using the hinge module 340.

Referring to FIG. 7, the hinge module 340 is located on the back of the main panel 310 and provides rotational force. It is located side by side in one direction of the motor 341 and is attached to the auxiliary panel 320. It includes a coupled rotation module 342 and a timing belt connecting the motor 341 and the rotation module 342.

The motor 341 provides driving force to rotate the motor 341 gear having first teeth formed on one side. The rotation module 342 is located in the direction of the auxiliary panel 320 in parallel with the motor 341 and can be combined with the auxiliary panel 320. The rotation module 342 may include a fixing part 3421 coupled to the main panel 310 and a rotating part 3422 that rotates with respect to the fixing part 3421 and is coupled to the auxiliary panel 320.

The rotating part 3422 is formed with second teeth 3423, and the number of second teeth 3423 may be greater than the first teeth. Since the difference in the number of rotations of the gear of the motor 341 and the rotating part 3422 occurs due to the difference in the number of teeth, the angle at which the rotating part 3422 of the rotation module 342 rotates is greater than the angle at which the motor 341 rotates. It is smaller, so the power of the motor 341 can be amplified.

The timing belt 343 connecting the first and second teeth 3423 transmits the rotational force of the motor 341 to the rotating part 3422 of the rotation module 342, and the first and second teeth 3423 A third tooth that engages may be formed on the inner surface of the timing belt 343.

The gear ratio of the first and second teeth 3423 is different, so the curvature of the part caught by the motor 341 and the part caught by the rotation module 342 is different, and when the motor 341 rotates multiple times, the rotation module 342 The timing belt is synchronized to rotate at a certain angle.

Referring to FIG. 8, (a) is a diagram showing a first state, (c) is a second state, and (b) is a diagram showing an intermediate state transitioning from the first state to the second state.

As shown in (a) of FIG. 8, the main panel 310 and the auxiliary panel 320 are not in close contact in the first state and may be spaced apart by the thickness of the hinge module 340. The auxiliary panel 320 is not arranged parallel to the main panel 310 in the first state, and its second edge, which is not hinged, is larger than the first edge coupled to the main panel 310 and the hinge module 340. It is located more towards the front.

Therefore, as shown in (a) of FIG. 8, it may have a shape inclined from the first edge to the second edge (from right to left in the drawing) toward the front (downward in the drawing). The second edge of the inclined auxiliary panel 320 may contact the rear surface of the main panel 310.

If the second edge of the auxiliary panel 320 is spaced apart from the main panel 310, there is a risk of damage to the auxiliary panel 320, so the auxiliary panel 320 is tilted so that it can be placed as close to the main panel 310 as possible. It can be placed.

At this time, since the auxiliary panel 320 may contact the hinge module 340, especially the motor body 3411, the edge 3413 in the opposite direction of the rotation module 342 of the motor body 3411 is omitted to have a curved surface or be inclined. It can be.

When the motor 341 is driven, the rotation module 342 also rotates through the timing belt, so that the auxiliary panel 320 rotates as shown in (b) of Figure 8, and enters the second state shown in (c) of Figure 8. It is placed side by side with the main panel 310 and the size of the display can be expanded.

As described above, in the first state, the auxiliary panel 320 is not parallel to the main panel 310 but is disposed at an angle, so the hinge module 340 and the auxiliary panel 320 rotate 180 degrees when switching from the first state to the second state. It rotates more than degrees.

The main panel 310 and the auxiliary panel 320 can be combined at a position spaced apart from the rotation center of the rotation module 342 using the rotation part 3422 and the bracket 3424 of the rotation module 342 so that they do not overlap. .

According to one aspect of the present invention, the screen of the display device can be expanded or reduced, so that when not in use, the size can be reduced and the screen can be expanded when a large screen is required depending on the situation.

The display size can be changed, increasing usability.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

100: display device
101: Case Top
102: Cover Bottom
103: Back cover
110: Broadcast reception unit
120: Sensing unit
130: input unit
140: storage unit
150: display module
160: Audio output unit
170: Interface unit
180: control unit
190: power supply unit
200: Remote control device.
310: main panel
320: Auxiliary panel
330: actuator
333: Guide rail
340: Hinge module
341: motor
3411: Motor body
3412: motor gear
342: Rotation module
3421: Fixing part
3422: Rotating part
3423: 2nd cog
343: timing belt
343c: 3rd cog

Claims (11)

main panel;
An auxiliary panel located on the back of the main panel;
A display device including a panel driving unit located on the back of the main panel and moving the auxiliary panel in a lateral direction of the main panel. According to paragraph 1,
A display device characterized in that the auxiliary panel is moved so that a pair is disposed on both sides of the main panel. According to paragraph 1,
The display device is characterized in that the auxiliary panel is disposed above the main panel. According to paragraph 1,
The panel driving unit
A display device comprising an actuator whose end is coupled to the end of the auxiliary panel and whose length is variable. According to clause 4,
The end of the actuator is
A display device comprising an elastic portion that pushes the auxiliary panel to the front after being extended to its maximum length. According to clause 5,
The end of the actuator is
A display device comprising an electromagnet that applies force in a direction opposite to the elasticity of the elastic portion when a contraction signal is received. According to paragraph 1,
The panel driver,
A motor located on the back of the main panel and providing rotational force;
a rotation module located side by side on one side of the motor and coupled to the auxiliary panel;
A display device comprising a timing belt connecting the motor and the rotation module. In clause 7,
a first tooth formed on the motor and onto which the timing belt engages;
It includes a second tooth formed on the rotation module and onto which the timing belt engages,
A display device, characterized in that the number of the second teeth is greater than the number of the first teeth. In clause 7,
The motor is
A display device comprising an inclined surface on the back so that the other side is thinner than one side. In clause 7,
A display device, characterized in that the rotation range of the rotation module is 180° or more. According to paragraph 1,
The main panel is a display device characterized in that it further includes guide rails located at both ends in a direction perpendicular to the moving direction of the auxiliary panel.

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