Display device

Abstract

Provided is a display device comprising: a main body including a display panel and a back cover covering a back surface of the display panel; and a stand fastened to the back surface of the main body to place the display panel on a floor, wherein the stand includes: a vertical portion extending in a vertical direction; and a link module positioned between the vertical portion and the main body, wherein the link module includes: a pair of link guides including a main axis, a first auxiliary axis, and a second auxiliary axis; a main link having both ends rotatably coupled to the main axis of the pair of link guides; a first auxiliary link having both ends rotatably coupled to the first auxiliary axis of the pair of link guides; and a second auxiliary link having both ends rotatably coupled to the second auxiliary axis of the pair of link guides.

Description

display device

[0001] The purpose of the present invention is to provide a display device having reduced weight and volume by simplifying the structure of the main body and stand.

[0002] As the information society develops, the demand for display devices is also increasing in various forms, and in response to this, recent display devices include liquid crystal displays (LCDs), field emission displays (FEDs), plasma display panels (PDPs), and electroluminescence devices.

[0003] The liquid crystal panel of the liquid crystal display device includes a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer interposed therebetween, and can display an image using light provided from a backlight unit.

[0004] As an example of an electroluminescent device (ELD), an active-matrix type organic light-emitting display device is commercially available. Because OLED displays are self-luminous, they do not require a backlight and offer advantages over liquid crystal displays (LCDs) in terms of response speed, viewing angle, and other factors. Therefore, they are attracting attention as next-generation displays.

[0005] Recently, materials such as OLED can be used to implement flexible display modules because they emit light without a backlight structure on the back, making it possible to implement curved display devices.

[0006] As display devices become more versatile, their size increases, necessitating greater stability in the stands they support. As display device usage becomes more diverse, angle and height adjustments are becoming increasingly necessary.

[0007] The volume and weight of the stand increase, which increases the size and volume of the overall display device, leading to increased manufacturing costs and the problem of taking up a lot of space.

[0008] The present invention aims to provide a display device having a reduced size of the main body and a simplified height adjustment function of the stand in order to solve the above problem.

[0009] A display device is provided, comprising: a main body including a display panel and a back cover covering a back surface of the display panel; and a stand fastened to a back surface of the main body to place the display panel on a floor, wherein the stand includes a vertical portion extending in a vertical direction; and a link module positioned between the vertical portion and the main body, wherein the link module includes a pair of link guides including a main axis, a first auxiliary axis, and a second auxiliary axis; a main link having both ends rotatably coupled to the main axes of the pair of link guides; a first auxiliary link having both ends rotatably coupled to the first auxiliary axis of the pair of link guides; and a second auxiliary link having both ends rotatably coupled to the second auxiliary axis of the pair of link guides.

[0010] The above link guide may include a first link guide positioned in front of the main link, and a head bracket protruding from the rear surface of the main body and rotatably connected to the main shaft of the first link guide.

[0011] A swivel module is included that is rotatably coupled to the back cover and includes the head bracket, and the angle of the main body can be adjusted by adjusting the angle of the first link guide and the head bracket.

[0012] The tilt stopper further includes a stopper projection inserted into the main shaft so as to be adjacent to the head bracket and protruding toward the head bracket, wherein the head bracket includes a stopper groove in which the stopper projection is received, and the angle of the head bracket can be changed within a range corresponding to the length of the stopper groove.

[0013] It may include a first torsion spring that is fixed at one end to the head bracket and at the other end to the main link and is wound in a spiral shape around the main shaft.

[0014] The above link guide includes a second link guide fixed to the vertical portion, and the second link guide can be located on one side of a stand mount fixed to the vertical portion of the stand.

[0015] The above stand may include a second torsion spring having one end fixed to the stand mount and the other end fixed to the main link.

[0016] The first auxiliary link and the second auxiliary link can be synchronized so that the pair of main shafts rotate at the same angle when the angle of the main link changes.

[0017] The above pair of auxiliary axes can be arranged symmetrically with respect to the main axis.

[0018] The first auxiliary link and the second auxiliary link may include a link stopper that contacts the main shaft and limits the rotation angle.

[0019] A friction washer interposed between the main link and the link guide may be included.

[0020] It may include a main shaft inserted into the above link guide and fastening the main link; a fixing nut fastened to an end of the main shaft; and an elastic washer positioned between the fixing nut and the main link.

[0021] The above main link, the first auxiliary link and the second auxiliary link are provided as a pair and are spaced apart horizontally.

[0022] It may include a link bracket connecting the pair of main links.

[0023] The above link bracket may further include a cable guide formed thereon and on which a main cable extending from the main body is secured.

[0024] A display device according to at least one embodiment of the present invention can simplify the configuration for adjusting the height of the main body by applying a small and simple dual hinge to the stand.

[0025] A display device according to at least one embodiment of the present invention can reduce the thickness of a vertical portion by omitting a slide structure for adjusting the height of a stand.

[0026] A display device according to at least one embodiment of the present invention has a main cable that can pass through the stand to connect the main body.

[0027] 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 a person having ordinary skill in the art to which the present invention belongs from the description below.

[0028] Figure 1 is a block diagram for explaining each component of the display device of the present invention.

[0029] FIG. 2 is a front view illustrating a display device according to one embodiment of the present invention.

[0030] FIG. 3 is a rear perspective view illustrating a display device according to one embodiment of the present invention.

[0031] FIG. 4 is a side view illustrating a display device according to one embodiment of the present invention.

[0032] Figure 5 is a cross-sectional view illustrating a conventional display device.

[0033] FIG. 6 is a side view illustrating changes in a link module of a display device according to one embodiment of the present invention.

[0034] Figure 7 is a perspective view illustrating a link module according to one embodiment of the present invention.

[0035] Figure 8 is an exploded perspective view of a link module according to one embodiment of the present invention.

[0036] Fig. 9 is an exploded perspective view showing an enlarged view of the first hinge part in Fig. 8.

[0037] Fig. 10 is a cross-sectional view taken along line AA of Fig. 7.

[0038] Figure 11 is a BB cross-sectional view of Figure 7.

[0039] FIG. 12 and FIG. 13 are drawings showing the state of an auxiliary link according to angle adjustment of a link module according to one embodiment of the present invention.

[0040] FIG. 14 is a drawing for explaining the operation of a swivel module of a display device according to one embodiment of the present invention.

[0041] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing numbers, identical or similar components will be given the same reference numbers and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably only for the convenience of writing the specification, and do not in themselves have distinct meanings or roles. In addition, when describing the embodiments disclosed in this specification, if it is determined that a specific description of a related known technology may obscure the gist of the embodiments disclosed in this specification, a detailed description thereof will be omitted. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

[0042] Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by these terms. These terms are used solely to distinguish one component from another.

[0043] When a component is referred to as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components intervening. Conversely, when a component is referred to as being "directly connected" or "connected" to another component, it should be understood that there are no other components intervening.

[0044] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0045] In this application, terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0046] Figure 1 is a block diagram for explaining each configuration of a display device (100).

[0047] The display device (100) may include a communication unit (110), an input unit (120), a sensing unit (124), an output unit (150), a control unit (180), a storage unit (185), and a power supply unit (190). The configuration illustrated in FIG. 1 may include only some of the configurations, or one configuration may perform two functions.

[0048] The communication unit (110) may include a broadcast receiving unit (111) including a tuner unit and a demodulator unit. The tuner unit of the broadcast receiving unit (111) may select a broadcast signal corresponding to a channel selected by a user or all previously stored channels among broadcast signals received through an antenna or cable. The tuner unit may convert the selected broadcast signal into an intermediate frequency signal or a baseband video or audio signal.

[0049] Meanwhile, the tuner unit can sequentially select broadcast signals of all stored broadcast channels through a channel memory function among the received broadcast signals and convert them into intermediate frequency signals or baseband video or audio signals.

[0050] The demodulation unit of the broadcast receiving unit (111) can perform a demodulation operation by receiving a digital IF signal (DIF) converted by the tuner unit. The demodulation unit can output a stream signal (TS) after performing demodulation and channel decoding. At this time, the stream signal can be a signal in which a video signal, an audio signal, or a data signal is multiplexed.

[0051] The stream signal output from the demodulation unit can be input to the control unit (180). The control unit (180) can perform demultiplexing, image / audio signal processing, etc., and then output an image through the display module (151) and output an audio through the audio output unit (152).

[0052] The external device interface unit (112) can connect an external device and a display device (100) to receive video signals, audio signals, and control signals from the external device. The interface unit (112) can be connected wired or wirelessly to external devices such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (laptop), etc.

[0053] The external device interface unit (112) transmits an image, voice, or data signal input from the outside via a connected external device to the control unit (180) of the display device (100). In addition, the image, voice, or data signal processed by the control unit (180) can be output to the connected external device.

[0054] The external device interface unit (112) may include a wired type and a wireless type. The wired type includes a physical terminal provided in the display device (100), and the wireless type may be connected to an external device through an antenna that receives a wireless signal.

[0055] The wired type may include a USB terminal, a CVBS (Composite Video Banking Sync) terminal, a component terminal, an S-video terminal (analog), a DVI (Digital Visual Interface) terminal, an HDMI (High Definition Multimedia Interface) terminal, an RGB terminal, a D-SUB terminal, etc., so as to input video and audio signals from an external device to the display device (100).

[0056] The wireless type can perform short-range wireless communication with other electronic devices located nearby. The display device (100) can be connected to a network with other electronic devices according to communication standards such as Bluetooth, RFID (Radio Frequency Identification), IrDA (Infrared Data Association), UWB (Ultra Wideband), ZigBee, and DLNA (Digital Living Network Alliance), for example.

[0057] The network interface unit (113) can access a specific web page via the connected network or another network linked to the connected network. In other words, it can access a specific web page via the network and transmit or receive data to or from the corresponding server. Additionally, it can receive content or data provided by a content provider or network operator.

[0058] That is, content such as movies, advertisements, games, VOD, and broadcast signals, as well as related information, can be received from content providers or network providers via the network. Furthermore, firmware update information and update files provided by network operators can be received. Furthermore, data can be transmitted to the Internet, content providers, or network operators.

[0059] In addition, the network interface unit (113) can select and receive a desired application from among applications open to the public through the network.

[0060] According to an embodiment, the network interface unit (113) may transmit or receive predetermined data with a user terminal connected to the display device through a network when a game application is executed on the display device. In addition, the network interface unit (113) may transmit or receive predetermined data with a server that stores game scores.

[0061] The input unit (120) may include a microphone (121) that collects sound, a user input unit (123) that detects a user's command, a sensor unit that senses the status of the display device and the surrounding conditions, and a remote signal receiving unit (125) that receives a signal from a remote control device (127).

[0062] The microphone (121) can recognize the user's voice or surrounding sounds, and in particular, receives the user's voice and processes it into electrical voice data. The microphone (121) can be implemented with various noise removal algorithms to remove noise generated during the process of receiving external audio signals.

[0063] The microphone (121) can not only collect the user's voice, convert it into voice data, and store it in the storage unit (185) or transmit it to an external device through the communication unit (110), but can also function as a user input unit (123) by analyzing the voice data and recognizing it as a user command.

[0064] The microphone (121) can be mounted on a remote control device (127) to be described later in addition to the main body (100) of the display device (100) and transmitted to the control unit (180) through the remote signal receiving unit (125).

[0065] The user input unit (123) is a device through which a user inputs control commands to control the display device. The user input unit (123) may be configured as a keypad, button, touch pad, or touch screen.

[0066] If the user input unit (123) has a hard key button, the user can input a command related to the display device (100) by pushing the hard key button. If the user input unit (123) has a touch screen, the user can input a command related to the display device (100) using the remote control device (127) by touching the soft key of the touch screen.

[0067] In addition, the user input unit (123) may be equipped with various types of input means that can be operated by the user, such as a scroll key or a jog key, and this embodiment does not limit the scope of the present invention.

[0068] Recently, as the size of the bezel of the display device (100) has become smaller, the number of display devices (100) with a minimized user input unit (123) in the form of a physical button exposed to the outside has increased. Instead, a minimum of physical buttons are located on the back or side, and user input can be received through a remote control device (127) via a touchpad or a remote signal receiving unit (125) described later.

[0069] The remote signal receiving unit (125) can input commands related to the display device (100) through a remote control device (127) having a user input unit (123). The remote signal receiving unit (125) is a user input unit (123) and receives signals from the remote control device (127) according to various communication methods such as RF (Radio Frequency) communication method and infrared (IR) communication method, and thus may belong to a wireless communication unit.

[0070] The sensing unit (124) refers to a device that detects changes within the display device (100) or external changes. For example, it may include at least one of a proximity sensor, an illumination sensor, a touch sensor, an infrared sensor (IR sensor), an ultrasonic sensor, an optical sensor (e.g., a camera), a voice sensor (e.g., a microphone), a battery gauge, and an environmental sensor (e.g., a hygrometer, a thermometer, etc.).

[0071] Recently, display devices (100) that can move or change the direction of the display have appeared, and thus, a gyroscope sensor, an acceleration sensor, etc. may be provided to detect the attitude of the display device.

[0072] Based on the information received from the sensing unit (124), the control unit (180) can check the status of the display device (100) and, if a problem occurs, notify the user of it or control it to maintain the best status by adjusting it on its own.

[0073] In addition, the content, picture quality, size, etc. of the image provided to the display module (151) can be controlled differently depending on the viewer detected by the sensing unit (124) or the surrounding lighting, etc., to provide an optimal viewing environment. As smart TVs advance, the functions installed in display devices are increasing, and the sensing unit (124) is also increasing along with them.

[0074] The output unit (150) is a device that provides visual and auditory information to the user through a display device, and may include a display module (151) and an audio output unit (152).

[0075] The display module (151) can generate a driving signal by converting a video signal, data signal, OSD signal, control signal, etc. processed by the control unit (180) or a video signal, data signal, control signal, etc. received from the interface unit. The display module (151) can include a display panel having a plurality of pixels.

[0076] The plurality of pixels provided on the display panel may have RGB sub-pixels. Alternatively, the plurality of pixels provided on the display panel may have RGBW sub-pixels. The display module (151) can convert image signals, data signals, OSD signals, control signals, etc. processed by the control unit (180) to generate driving signals for the plurality of pixels.

[0077] The display module (151) can be a PDP (Plasma Display Panel), LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode), flexible display, etc., and may also be capable of a 3D display. The 3D display module (151) can be divided into a glasses-free type and a glasses type.

[0078] The display device (100) includes a display module (151) that occupies most of the front surface area and a case that covers the rear side of the display module (151) and packages the display module (151).

[0079] Recently, display devices (100) can utilize display modules (151) that can be bent, such as LEDs (Light Emitting Diodes) or OLEDs (Organic Light Emitting Diodes), to implement a curved screen rather than a flat screen.

[0080] Previously, LCDs were primarily used because they were unable to emit light on their own, so they relied on backlight units for light. Backlight units are devices that evenly distribute light from a light source to the liquid crystal display (LCD) located at the front. As backlight units have become thinner, thinner LCDs have become possible. However, it has been difficult to implement backlight units using flexible materials, and when the backlight unit is bent, it becomes difficult to supply light evenly to the LCD, causing screen brightness to fluctuate.

[0081] On the other hand, in the case of LEDs or OLEDs, since each element forming a pixel emits light on its own, it is possible to implement a curved display without using a backlight unit. In addition, since each element emits light on its own, even if the positional relationship with neighboring elements changes, its own brightness is not affected, so a curved display module (150) can be implemented using LEDs or OLEDs.

[0082] OLED (Organic Light-Emitting Diodes) panels made their debut in the mid-2010s and are rapidly replacing LCDs in the small- and medium-sized display market. OLEDs utilize the self-luminous phenomenon, where fluorescent organic compounds emit light when current flows through them. Their image quality response speed is faster than that of LCDs, resulting in virtually no afterimages when displaying video.

[0083] OLED uses three types of fluorescent organic compounds with self-luminous functions: red, green, and blue. It is a luminescent display product that utilizes the phenomenon in which electrons injected from the cathode and anode and positively charged particles combine within the organic material to emit light on their own, so there is no need for a backlight (backlight device) that reduces color.

[0084] The LED (Light Emitting Diode) panel is a technology that uses one LED element as one pixel, and since the size of the LED element can be reduced compared to the past, a flexible display module (151) can be implemented. Devices previously called LED TVs used LEDs as a light source for a backlight unit that supplied light to an LCD, and the LEDs themselves did not form a screen.

[0085] A display module may include a plurality of pixels (R, G, B). The 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. The plurality of pixels (R, G, B) may be arranged or arranged in a matrix form.

[0086] For example, a plurality of pixels (R, G, B) may include a red (Red, hereinafter referred to as 'R') sub-pixel, a green (Green, 'G') sub-pixel, and a blue (Blue, 'B') sub-pixel. The plurality of pixels (R, G, B) may further include a white (White, hereinafter referred to as 'W') sub-pixel.

[0087] The side of the display module (151) that displays an image may be referred to as the front or front. When the display module (151) displays an image, the side from which the image cannot be observed may be referred to as the rear or back. Meanwhile, the display module (151) is configured as a touch screen and can be used as an input device in addition to an output device.

[0088] The audio output unit (152) receives a signal processed by the control unit (180) and outputs it as voice.

[0089] 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.

[0090] The control unit (180) can demultiplex a stream input through a tuner unit, a demodulator unit, an external device interface unit (112), or a network interface unit (113), or process demultiplexed signals to generate and output a signal for video or audio output.

[0091] The image signal processed by the control unit (180) can be input to the display module (151) and displayed as an image corresponding to the image signal. In addition, the image signal processed by the control unit (180) can also be input to an external output device through the external device interface unit (112).

[0092] The voice signal processed by the control unit (180) can be output as audio to the audio output unit (152). In addition, the voice signal processed by the control unit (180) can be input to an external output device through the external device interface unit (112). Although not shown in FIG. 2, the control unit (180) may include a demultiplexing unit, an image processing unit, etc. This will be described later with reference to FIG. 3.

[0093] In addition, the control unit (180) can control the overall operation within the display device (100). For example, the control unit (180) can control the tuner unit (111) to select (tune) a broadcast corresponding to a channel selected by the user or a previously stored channel.

[0094] In addition, the control unit (180) can control the display device (100) by a user command or an internal program input through the user input interface unit (173). Meanwhile, the control unit (180) can control the display module (151) to display an image. At this time, the image displayed on the display module (151) may be a still image or a moving image, and may be a 2D image or a 3D image.

[0095] Meanwhile, the control unit (180) can cause a predetermined 2D object to be displayed within an image displayed on the display module (151). For example, the object can 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.

[0096] Meanwhile, the control unit (180) may modulate and / or demodulate a signal using the Amplitude Shift Keying (ASK) method. Here, the Amplitude Shift Keying (ASK) method may mean a method of modulating a signal by varying the amplitude of a carrier wave according to a data value, or of restoring an analog signal to a digital data value according to the amplitude of the carrier wave.

[0097] For example, the control unit (180) can modulate a video signal using the amplitude shift keying (ASK) method and transmit it through a wireless communication module.

[0098] For example, the control unit (180) can demodulate and process an image signal received through a wireless communication module using the amplitude shift keying (ASK) method.

[0099] Through this, the display device (100) can easily transmit and receive signals with other adjacently placed video display devices without using a unique identifier such as a MAC address (Media Access Control Address) or a complex communication protocol such as TCP / IP.

[0100] Meanwhile, the display device (100) may further include a camera unit. The camera unit can capture images of the user. The camera unit may be implemented with a single camera, but is not limited thereto, and may also be implemented with multiple cameras. Meanwhile, the camera unit may be embedded in the display device (100) above the display module (151) or may be separately positioned. Image information captured by the camera unit may be input to the control unit (180).

[0101] The control unit (180) can recognize the user's location based on the image captured by the camera. For example, the control unit (180) can 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 within the display module (151) corresponding to the user's location.

[0102] The control unit (180) can detect the user's gesture based on the image captured from the camera unit, or the signal detected from the sensor unit, or a combination thereof.

[0103] The storage unit (185) may store programs for each signal processing and control within the control unit (180), or may store signal-processed video, audio, or data signals. For example, the storage unit (185) may store application programs designed for the purpose of performing various tasks that can be processed by the control unit (180), and may selectively provide some of the stored application programs upon request from the control unit (180).

[0104] Programs stored in the storage unit (185) are not particularly limited as long as they can be executed by the control unit (180). The storage unit (140) may also perform a function for temporarily storing video, audio, or data signals received from an external device through the external device interface unit (112). The storage unit (185) may store information regarding a specific broadcast channel through a channel memory function such as a channel map.

[0105] Although the storage unit (185) of FIG. 1 is illustrated as being provided separately from the control unit (180), the scope of the present invention is not limited thereto, and the storage unit (185) may be included within the control unit (180).

[0106] The storage unit (185) may include at least one of volatile memory (e.g., DRAM, SRAM, SDRAM, etc.) or non-volatile memory (e.g., flash memory, hard disk drive (HDD), solid-state drive (SSD), etc.).

[0107] The power supply unit (190) can supply power to the entire display device (100). In particular, it can supply power to a control unit (180) that can be implemented in the form of a system on chip (SOC), a display module (151) for displaying images, and an audio output unit (152) for audio output.

[0108] Specifically, the power supply unit (190) may be equipped with 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.

[0109] Meanwhile, the power supply unit (190) receives power from an external source and distributes power to each component. The power supply unit (190) may utilize a method of supplying AC power by directly connecting to an external power source, or may include a power supply unit (190) that can be recharged and used, including a battery.

[0110] The former requires a wired cable connection, making movement difficult or limited. The latter offers freedom of movement, but increases weight and volume by the battery. Charging requires a direct connection to a power cable or a charging cradle (not shown) for a set period of time.

[0111] The charging cradle can be connected to the display device through an externally exposed terminal, or the built-in battery can be charged when the device is brought into proximity using a wireless method.

[0112] Meanwhile, the block diagram of the display device (100) illustrated in FIG. 1 is only a block diagram for one embodiment of the present invention, and each component of the block diagram may be integrated, added, or omitted depending on the specifications of the display device (100) actually implemented.

[0113] That is, two or more components may be combined into a single component, or a single component may be subdivided into two or more components, as needed. Furthermore, the functions performed by each block are intended to illustrate embodiments of the present invention, and their specific operations or devices do not limit the scope of the present invention.

[0114] FIG. 2 is a front view illustrating a display device (1000) according to one embodiment of the present invention, and FIG. 3 is a rear perspective view illustrating a display device (1000) according to one embodiment of the present invention. FIG. 4 is a side view illustrating a display device (1000) according to one embodiment of the present invention.

[0115] A display device (1000) includes a main body (100) having a display module positioned at the front and a back cover (102) covering the back of the display module, and a stand (200) for mounting the main body (100) on a floor surface.

[0116] The display module (151) is trending towards becoming thinner, and in particular, a display module (151) with a backlight unit omitted, such as OLED or micro LED, is thin, so the thickness (a) of the main body (100) can also become thinner.

[0117] Figure 5 is a cross-sectional view of a conventional display device. The main body (10) may include a display module (15), a module substrate (16) positioned on the back surface of the display module (15), and a main substrate (18). The module substrate (16) controlling the display module (15) is connected to an end of the display module (15) and may be mounted on the back surface of the display module (15).

[0118] The main board (18) is equipped with various ICs for driving the display device (10), and the main board (18) is a component directly related to the safety of the product as it generates heat and various electromagnetic waves. The main board (18) must be manufactured in accordance with various standards such as safety standards, EMI (Electro Magnetic Interference) standards, flame retardancy standards, and heat dissipation standards, and in particular, an electronic metal shield (13) is required to comply with the EMI standards.

[0119] The metal shield (13) contains a metal material and can prevent electromagnetic waves generated from the main board (18) from affecting other devices while simultaneously shielding the influence of electromagnetic waves from other electronic devices on the main board (181). However, when installing the metal shield (13), additional space must be secured, which may increase the thickness (b) and weight of the main body (10). In order to support the weight of the main body (10), the hinge (21) connecting the stand (20) and the main body (10) may have a complex structure and a large volume in order to have strong support.

[0120] The stand (20) that holds the display device may be equipped with a height adjustment function corresponding to the user's sitting height. A conventional stand (20) may be equipped with a sliding structure (24) for height adjustment. When adjusting the height using a sliding method, the range of motion is large, providing the advantage of a high degree of freedom in height adjustment.

[0121] However, the vertical section (26) equipped with the sliding structure (24) has a problem in that its size increases, thereby increasing the overall volume and weight of the display device.

[0122] Accordingly, the present invention provides a stand (200) structure that can perform height adjustment using a link module (210) rather than a height adjustment method of a sliding structure, in order to provide a stand (200) with a simpler structure.

[0123] Referring to FIG. 4, the stand (200) of the display device (1000) of the present invention may include a stand (200) base (250) in contact with a mounting surface, a vertical portion (260) extending vertically from the stand (200) base (250), and a link module (210) with the vertical portion (260).

[0124] The link module (210) may include a first hinge portion (230a) positioned between the main body (100) and connected to the main body (100) and a second hinge portion (230b) connected to the vertical portion (260), and may include a link portion (220) connecting between the first hinge portion (230a) and the second hinge portion (230b). For the convenience of the following description, the direction in which the first hinge portion (230a) is positioned is referred to as the front, the direction in which the second hinge portion (230b) is positioned is referred to as the rear, and the width direction of the screen of the display module (151) is referred to as the horizontal direction and the height direction is referred to as the vertical direction.

[0125] FIG. 6 is a side view illustrating changes in the link module (210) of the display device (1000) according to one embodiment of the present invention. As shown in (a) and (b), the angle of the link module (210) may change depending on the rotation of the first hinge portion (230a) and the second hinge portion (230b), thereby changing the vertical position of the main body (100).

[0126] Alternatively, the angle between the link module (210) and the main body (100) can be adjusted through a tilting structure in which only the first hinge portion (230a) rotates, such as in (c), thereby adjusting the front angle of the display module (151) mounted on the main body (100).

[0127] Fig. 7 is a perspective view illustrating a link module (210) according to one embodiment of the present invention, and Fig. 8 is an exploded perspective view of a link module (210) according to one embodiment of the present invention. The link module (210) may include a link portion (220), a first hinge portion (230a), and a second hinge portion (230b).

[0128] The link portion (220), the first hinge portion (230a) and the second hinge portion (230b) may be provided as a pair spaced apart from each other in the horizontal direction, and may include a link bracket (221) connecting the pair of link portions (220).

[0129] The link bracket (221) may be formed integrally with a pair of main links (222) and may have a width corresponding to the distance between the pair of link parts (220). The link bracket (221) may include a cable guide (227) for securing a cable extending from the main body (100).

[0130] The link section (220) may include three links consisting of a main link (222), a first auxiliary link (223a), and a second auxiliary link (223b).

[0131] The main link (222), the first auxiliary link (223a), and the second auxiliary link (223b) are members whose ends are rotatably connected, and the main link (222), the first auxiliary link (223a), and the second auxiliary link (223b) are coupled to rotate around different axes (232, 233a, 233b). The main link (222) is coupled to rotate around the main axis (232), and the first auxiliary link (223a) and the second auxiliary link (223b) may be provided to rotate around the first auxiliary axis (233a) and the second auxiliary axis (233b).

[0132] The first hinge portion (230a) may include a first link guide (231) to which one end (towards the main body (100)) of the link portion (220) is connected, and the second hinge portion (230b) may include a second link guide (238) to which the other end (towards the vertical portion (260)) of the link portion (220) is connected. The first link guide (231) and the second link guide (238) may be connected to a main shaft (232), a first auxiliary shaft (233a), and a second auxiliary shaft (233b) that pass through the link portion (220) in a horizontal direction, respectively.

[0133] A pair of main shafts (232) pass through both ends of the main link (222), a pair of first auxiliary shafts (233a) pass through both ends of the first auxiliary link (223a), and a pair of second auxiliary shafts (233b) pass through both ends of the second auxiliary link (223b), so that both ends of the three links can be rotatably coupled to a pair of link guides (231, 238).

[0134] Fig. 9 is an exploded perspective view showing an enlarged portion of the first hinge portion (230a) in Fig. 8, and Fig. 10 is a cross-sectional view of the first hinge portion (230a) taken along line AA in Fig. 7.

[0135] The main shaft (232) is inserted horizontally into the first shaft hole of the first link guide (231), and the first shaft hole may include a straight portion rather than a circle so that the main shaft (232) does not rotate with respect to the first link guide (231). The main shaft (232) may also have a cross-section corresponding to the shape of the first shaft hole.

[0136] One side of the main shaft (232) includes the main body (100), and the other side can protrude through the first link guide (231). The main link (222) and the head bracket (245) can be fastened to the protruding portion through the first link guide (231), and a plurality of washers (237a, 237c) can be inserted between the main link (222) and the head bracket (245) to increase friction.

[0137] A fixing nut (234) is fastened to the other end of the main shaft (232), and the load-bearing capacity of the hinge portion (230a, 230b) can be adjusted through the amount of fastening of the fixing nut (234). If the fixing nut (234) is tightened tightly, the main body (100) can support a greater load.

[0138] The first link guide (231) includes a link home (2313) into which auxiliary links (223a, 223b) are inserted, and the auxiliary links (223a, 223b) inserted into the link home (2313) can be rotatably fastened to the link guide (231) by an auxiliary shaft (233). The auxiliary shafts (233) can be symmetrically provided on both sides of the main shaft (232), and since the main shaft (232) and the pair of auxiliary shafts (233) are both fastened to the first link guide (231), the relative positions of the main shaft (232) and the pair of auxiliary shafts (233) do not change.

[0139] As shown in (a) and (b) of FIG. 6, the link module (210) may include a friction washer (237a) that provides frictional force between the main link (222) and the link guide (231, 238) so that the link module (210) can be fixed at an angle desired by the user.

[0140] The friction washer (237a) can provide frictional force between each member through which the main shaft (232) passes so that rotation does not occur around the main shaft (232) unless the user applies a force exceeding a certain amount.

[0141] In this embodiment, it can be positioned between the head of the main shaft (232) and the first link guide (231), and between the first link guide (231) and the main link (222). It can include a friction washer (237a) and an elastic washer (237b) that applies elasticity so that each member is in close contact. The elastic washer (237b) is a donut-shaped member and is a type of plate spring that provides elasticity in the thickness direction. It can include a curved surface curved in the thickness direction to provide elasticity in the axial direction of the main shaft (232) (horizontal direction of the display device (1000).

[0142] The first link guide (231) is tiltably connected to the main body (100) via a head bracket (245), and can be tiltably connected to the main body (100). The feature that the angle with respect to the main body (100) is variable via the head bracket (245) is a difference between the first hinge portion (230a) and the second hinge portion (230b).

[0143] The head bracket (245) protrudes from the rear surface of the main body (100) in a rearward direction, and the rear end of the head bracket (245) can be rotatably coupled to the first hinge portion (230a). By changing the angle between the head bracket (245) and the link module (210), the angle of the main body (100) can be adjusted as shown in (c) of FIG. 6.

[0144] A tilt stopper (235) may be provided as a configuration for limiting the tilting angle. The tilt stopper (235) has a ring shape like a washer and includes an axial hole (2351) of the tilt stopper (235) through which the main shaft (232) passes. The axial hole (23521) includes a straight portion like the first link guide (231), so that the main shaft (232), the first link guide (231), and the tilt stopper (235) can rotate together with respect to the head bracket (245) and the main body (100) can tilt.

[0145] Since the shaft hole (2451) formed in the head bracket (245) is circular, the main shaft (232) can rotate to form a different angle from the first link guide (231) and the tilt stopper (235), so that the angle of the main body (100) can be adjusted as shown in (c) of FIG. 6.

[0146] The tilt stopper (235) is arranged adjacent to the head bracket (245) and may include a stopper protrusion (2353) protruding toward the head bracket (245). The head bracket (245) may include a stopper groove (2453) in which the stopper protrusion (2353) is received. The size of the stopper groove (2453) is larger than that of the stopper protrusion (2353), so that when the angle of the main body (100) changes, tilting is possible only to an angle at which the stopper protrusion (2353) touches the end of the stopper groove (2453).

[0147] The first hinge portion (230a) may further include a friction washer (237a) between the head bracket (245) and the main link (222) to support the weight of the main body (100) coupled through the head bracket (245). The friction washer (237c) may wear out, and it is difficult to support the weight of the main body (100) with friction alone, so the first hinge portion (230a) of the present invention may include a torsion spring (236). The torsion spring (236) is a spring in which a metal wire is wound in a spiral shape and one end and the other end of the wire are extended in a straight line to form a predetermined angle.

[0148] The torsion spring (236) can support the weight of the main body (100) by being fixed to the head bracket (245) at one end and to the link module (210) at the other end, with the elasticity of the torsion spring (236). Since the torsion spring (236) supports the weight of the main body (100), the angle between the head bracket (245) and the link module (210) can be maintained.

[0149] Fig. 11 is a BB cross-sectional view of Fig. 7. The second link guide (238) of the second hinge portion (230b) also includes a first shaft hole, a second shaft hole, and a link home like the first link guide (231), and may include a point where the main shaft (232) is fastened with a fixing nut (234), and a friction washer (237a) and an elastic washer (237b) for friction.

[0150] The above configuration is the same as the first hinge portion (230a), so when describing the second hinge portion (230b), the description of the configuration overlapping with the first hinge portion (230a) will be replaced with the description of the first hinge portion (230a).

[0151] The second link guide (238) of the second hinge portion (230b) is integrally fixed to a stand mount (239) that is fixed to the vertical portion (260), thereby fixing its position and angle. Accordingly, even when the main link (222) rotates around the main axis (232) of the second link guide (238), the positions of the main axis (232), the first auxiliary axis (233a), and the second auxiliary axis (233b) of the second link guide (238) are fixed.

[0152] Since the position of the second link guide (238) is fixed when the main link (222) rotates, the position of the first hinge portion (230a) can move up and down. At this time, a pair of auxiliary links (223a, 223b) assist the first hinge portion (230a) to move in the vertical direction while the angle of the first link guide (231) does not change.

[0153] FIG. 12 and FIG. 13 are drawings showing the state of the auxiliary links (223a, 223b) according to the angle adjustment of the link module (210) according to one embodiment of the present invention. FIG. 12 is a drawing showing the first auxiliary link (223a) and the second auxiliary link (223b) in a state where the main body (100) is positioned at the lower side as in FIG. 6(a), and FIG. 13 is a drawing showing the first auxiliary link (223a) and the second auxiliary link (223b) in a state where the main body (100) is positioned at the upper side as in FIG. 6(b).

[0154] In order for the link module (210) to operate without an angular change of the main body (100) as shown in (a) and (b) of FIG. 6, a structure that synchronizes the angular changes of the first hinge portion (230a) and the second hinge portion (230b) is required. The present invention can implement a synchronization structure through a pair of auxiliary links (223a, 223b).

[0155] The distance between a pair of first auxiliary axles (233a) and a pair of second auxiliary axles (233b) at both ends of a pair of auxiliary links (223a, 223b) is determined by the length of the first auxiliary link (223a) and the second auxiliary link (223b), so that, as shown in FIGS. 13 and 14, the positions of the main axis (232), the first auxiliary axis (233a), and the second auxiliary axis (233b) of the first link guide (231) are the same, and only the position of the first link guide (231) changes.

[0156] That is, a pair of auxiliary links (223a, 223b) guide the main body (100) so that its angle remains fixed when the angle of the main link (222) changes, and only its position changes in the up-down direction.

[0157] The first auxiliary link (223a) / second auxiliary link (223b) may include stoppers (2231, 2232, 2233, 2234) that further protrude in the direction of the pair of main shafts (232) on an extension line connecting the pair of first auxiliary shafts (233a) / the pair of second auxiliary shafts (233b). The stoppers may be provided at both the rear and front ends of the auxiliary links (223a, 223b).

[0158] When the main body (100) moves downward as in (a) of Fig. 12, the rear stopper (2232) of the first auxiliary link (223a) coupled to the second link guide (238) comes into contact with the main shaft (232b) of the second hinge portion, thereby limiting the rotation angle of the link portion (220).

[0159] In Fig. 12 (b), a stopper (2233) located at the front end of the second auxiliary link (223b) coupled to the first link guide (231) may contact the main shaft (232a) of the first hinge portion to limit the rotation angle of the link portion (220). Both the stopper (2232) of the first link guide (231) and the stopper (2233) of the second link guide (238) may be provided, or at least one of the two may be provided.

[0160] As shown in (a) of Fig. 13, when the main body (100) moves upward, the front stopper (2231) of the first auxiliary link (223a) coupled to the first link guide (231) comes into contact with the main shaft (232a) and can limit the rotation angle of the link portion (220). As shown in (b) of Fig. 13, the stopper (2234) located at the rear end of the second auxiliary link (223b) coupled to the second link guide (238) comes into contact with the main shaft (232b) and can limit the rotation angle of the link portion (220).

[0161] As illustrated in FIG. 9, the first auxiliary shaft (233a) and the second auxiliary shaft (233b) may be shorter than the main shaft (232) so that they only penetrate the auxiliary link and not the main link (222). Referring to FIGS. 7 and 8, the main body (100) may include a swivel module (240) that is fastened to the rear surface. Through the swivel module (240), the main body (100) can be switched to either a state in which the long side is arranged horizontally as in FIG. 2 or a state in which the long side is arranged vertically.

[0162] A head bracket (245) connected to a link module (210) can be rotatably coupled to the back of the main body (100), and the swivel module (240) of the present invention can be implemented using a plate-shaped member for a slim main body (100) design.

[0163] The swivel module (240) may include a fixed plate (241) that is fastened to the back surface of the main body (100), and a circular swivel plate (242) that rotates along a circular opening formed in the fixed plate (241). A head bracket (245) is fixed to the swivel plate (242), and the swivel plate (242) and the head bracket (245) are fixed to the stand (200) and the fixed plate (241) is fixed to the main body (100).

[0164] FIG. 14 is a drawing for explaining the operation of the swivel module (240) of the display device (1000) according to one embodiment of the present invention. (a) of FIG. 14 illustrates the state of the swivel module (240) in the horizontal mode as in FIG. 2, and (b) of FIG. 14 illustrates the state of the swivel module (240) in the vertical mode.

[0165] The swivel plate (242) rotates relative to the fixed plate (241), and since the main body (100) rotates while the stand (200) is fixed, when the main body (100) is rotated to actually change the arrangement of the main body (100), the swivel plate (242) does not rotate and the angle between the fixed plate (241) and the main body (100) changes.

[0166] The swivel plate (242) of the swivel module (240) of the present invention includes an opening in the central portion, and a cable extended from the main body (100) can be extended to the stand (200) through the opening of the swivel plate (242).

[0167] When a pin connection is made in the central portion, it is difficult for the cable (184) to pass through, but in the slim-type swivel module (240) of the present invention, the pin connection in the center can be omitted by using a disc-shaped swivel plate (242), so that the cable (184) can pass through the swivel module (240) through the central opening (246) of the swivel plate (242).

[0168] However, if the swivel module (240) continues to rotate in one direction, the cable extended from the main body (100) may become tangled, and a swivel stopper (244) may be included so that the main body (100) can be stably fixed in horizontal or vertical mode.

[0169] The swivel stopper (244) may include a protrusion shape fixed to the fixed plate (241), and the swivel plate (242) may include a stopper slot (243) in which the swivel stopper (244) is accommodated. The stopper slot (243) extends 90°, and the swivel module (240) rotates within the extension range of the stopper slot (243), thereby allowing the main body (100) to be switched between horizontal and vertical modes.

[0170] A display device (1000) according to at least one embodiment of the present invention can simplify the configuration for adjusting the height of the main body by applying a small and simple dual hinge to the stand (200).

[0171] A display device according to at least one embodiment of the present invention can reduce the thickness of the vertical portion (260) by omitting the slide structure for adjusting the height of the stand (200).

[0172] A display device according to at least one embodiment of the present invention can have a main cable passing through the stand (200) to connect the main body.

[0173] The above detailed description should not be construed as limiting in any respect and should be considered illustrative only. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are intended to be included within the scope of the present invention.

Claims

A body including a display panel and a back cover covering the back of the display panel; and Includes a stand that is attached to the back of the main body and places the display panel on the floor, The above stand, a vertical portion extending in a vertical direction; and Including a link module located between the vertical portion and the main body, The above link module A pair of link guides including a main shaft, a first auxiliary shaft and a second auxiliary shaft; A main link having both ends rotatably connected to the main shaft of the pair of link guides; A first auxiliary link having both ends rotatably coupled to a first auxiliary shaft of the pair of link guides; and A second auxiliary link is included, wherein both ends are rotatably connected to a second auxiliary shaft of the pair of link guides. Display device. In the first paragraph, The above link guide includes a first link guide located in front of the main link, It is characterized by including a head bracket that protrudes from the back surface of the main body and is rotatably connected to the main shaft of the first link guide. Display device. In the second paragraph, A swivel module rotatably coupled to the back cover and including the head bracket, It is characterized in that the angle of the main body is adjusted by adjusting the angle of the first link guide and the head bracket. Display device. In the second paragraph, Further comprising a tilt stopper inserted into the main shaft so as to be adjacent to the head bracket and including a stopper protrusion protruding toward the head bracket, The above head bracket includes a stopper groove in which the stopper protrusion is received, Characterized in that the angle of the head bracket can be changed within a range corresponding to the length of the stopper home. Display device. In the second paragraph, It is characterized by including a first torsion spring that is fixed to the head bracket at one end and fixed to the main link at the other end and is wound in a spiral shape around the main shaft. Display device. In the first paragraph, The above link guide is, Including a second link guide fixed to the vertical section, A display device characterized in that the second link guide is located on one side of a stand mount that is fixed vertically to the stand. In paragraph 6, The above stand is It is characterized by including a second torsion spring, one end of which is fixed to the stand mount and the other end is fixed to the main link. Display device. In the first paragraph, The above first auxiliary link and the above second auxiliary link It is characterized in that when the angle of the main link changes, the pair of main axes are synchronized to rotate at the same angle. Display device. In the first paragraph, The above pair of auxiliary axes are characterized in that they are arranged symmetrically with respect to the main axis. Display device. In the first paragraph, The first auxiliary link and the second auxiliary link are characterized in that they include a link stopper that contacts the main shaft and limits the rotation angle. Display device. In the first paragraph, characterized in that it includes a friction washer interposed between the main link and the link guide. Display device. In the first paragraph, A main shaft inserted into the above link guide and connecting the main link; A fixed nut fastened to the end of the main shaft; and It is characterized by including an elastic washer positioned between the fixed nut and the main link. Display device. In the first paragraph, The above main link, the first auxiliary link and the second auxiliary link are provided as a pair and are spaced apart horizontally. characterized in that it includes a link bracket connecting between the above pair of main links. Display device. In Article 13, It is characterized by further including a cable guide formed on the link bracket and on which a main cable extended from the main body is secured. Display device.

Images