Back cover and display device

Abstract

The present invention relates to a back cover and a display device. The display device according to the present invention comprises: a display panel; and a back cover arranged on a back surface of the display panel, wherein the back cover includes a plurality of protrusions protruding at a predetermined height from the back surface of the back cover, wherein the plurality of protrusions are spaced apart from each other by a predetermined distance in a first direction to form a pattern.

Description

Back cover and display device

[0001] The present embodiments relate to a display device, and more specifically, to a back cover having a protruding pattern shape formed on the back surface and a display device including the same.

[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] In particular, as display devices become thinner in terms of display panels, the back covers that cover the back of the display panel are also becoming thinner.

[0004] However, there is a problem that carbonization marks such as gate marks are visible when a thin back cover is injection-molded.

[0005] The present invention is intended to solve the above-described problems, and the technical task of embodiments of the present invention is to provide a back cover and a display device having a certain protruding pattern formed on the back surface.

[0006] In addition, the embodiments of the present invention have as their technical task a back cover and a display device in which carbonization marks, etc. are concealed by forming a certain protruding pattern on the back surface of the back cover.

[0007] The problems to be solved by the present invention are not limited to those described above, and other problems not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0008] A display device according to embodiments for solving the technical problem described above includes a display panel and a back cover arranged on a back surface of the display panel, wherein the back cover includes a plurality of protrusions protruding at a predetermined height from the back surface of the back cover, and the plurality of protrusions are spaced apart from each other by a predetermined distance in a first direction to form a pattern.

[0009] According to embodiments, the plurality of protrusions may have a cross-sectional area that decreases from the lower portion to the upper portion.

[0010] According to embodiments, the cross-section of the plurality of protrusions may be formed as at least one of a semicircle, a semi-ellipse, or a triangle.

[0011] According to embodiments, the predetermined distance may be formed to be 2700 μm or more and 3300 μm or less.

[0012] According to embodiments, the predetermined height may be formed to be 13.5 μm or more and 16.5 μm or less.

[0013] According to embodiments, the ratio of the predetermined height and the predetermined distance may be formed as 1 to 200.

[0014] According to embodiments, the plurality of protrusions may be formed to extend in a second direction perpendicular to the first direction.

[0015] According to embodiments for solving the technical problem described above, a back cover is disposed on the back surface of a display panel, and includes a plurality of protrusions protruding at a predetermined height from the back surface, and the plurality of protrusions are spaced apart from each other by a predetermined distance in a first direction to form a pattern.

[0016] According to embodiments, the plurality of protrusions may have a cross-sectional area that decreases from the lower portion to the upper portion.

[0017] According to embodiments, the cross-section of the plurality of protrusions may be formed as at least one of a semicircle, a semi-ellipse, or a triangle.

[0018] According to embodiments, the predetermined distance may be formed to be 2700 μm or more and 3300 μm or less.

[0019] According to embodiments, the predetermined height may be formed to be 13.5 μm or more and 16.5 μm or less.

[0020] According to embodiments, the ratio of the predetermined height and the predetermined distance may be formed as 1 to 200.

[0021] According to embodiments, the plurality of protrusions may be formed to extend in a second direction perpendicular to the first direction.

[0022] According to embodiments, there is an effect that a back cover and a display device having a constant protruding pattern formed on the back surface can be provided.

[0023] According to embodiments, there is an effect that a back cover and a display device can be provided in which carbonization marks, etc. are concealed by forming a certain protruding pattern on the back surface of the back cover.

[0024] 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.

[0025] Figure 1 is a block diagram for explaining each component of a display device according to embodiments.

[0026] FIG. 2 is a perspective view illustrating an example of a display device according to embodiments.

[0027] FIG. 3 is an exploded perspective view illustrating an example of a display device according to embodiments.

[0028] Figure 4 is an exemplary drawing showing the back surface of a back cover according to embodiments.

[0029] FIG. 5 is an exemplary drawing showing a cross-section of a back cover according to the embodiments of FIG. 4, cut along line A-A'.

[0030] Figure 6 is a table and graph showing the defective area ratio and reflectivity of the back cover according to embodiments.

[0031] Figure 7 is an exemplary diagram comparing a back cover according to embodiments with a conventional back cover.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0036] 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.

[0037] Meanwhile, the video display device described in this specification is an intelligent video display device that adds computer support functions to broadcast reception functions, for example. While faithful to the broadcast reception function, it can be equipped with Internet functions and other functions, and can be equipped with a more user-friendly interface such as a manual input device, touch screen, or space remote control. In addition, it can be connected to the Internet and a computer with support for wired or wireless Internet functions, and can perform functions such as email, web browsing, banking, or games. A standardized, general-purpose operating system can be used for these various functions.

[0038] Therefore, the video display device described in the present invention can perform a variety of user-friendly functions, for example, because various applications can be freely added or deleted on a general-purpose operating system kernel. More specifically, the video display device can be a network TV, HBB TV, smart TV, etc., and in some cases, it can also be applied to smartphones.

[0039]

[0040] FIG. 1 is a block diagram for explaining each configuration of a display device (100) according to embodiments.

[0041] The display device (100) may include a broadcast receiving 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), a control unit (180), a display module (150), an audio output unit (160), and / or a power supply unit (190).

[0042] The broadcast receiving unit (110) may include a tuner unit (111) and a demodulator unit (112).

[0043] Meanwhile, unlike the drawing, the display device (100) may include only the external device interface unit (171) and the network interface unit (172) among the broadcast receiving unit (110), the external device interface unit (171), and the network interface unit (172). That is, the display device (100) may not include the broadcast receiving unit (110).

[0044] The tuner unit (111) can 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.

[0045] For example, the tuner unit (111) can convert the selected broadcast signal into a digital IF signal (DIF) if it is a digital broadcast signal, and can convert it into an analog baseband video or audio signal (CVBS / SIF) if it is an analog broadcast signal. That is, the tuner unit (111) can process a digital broadcast signal or an analog broadcast signal. The analog baseband video or audio signal (CVBS / SIF) output from the tuner unit (111) can be directly input to the control unit (180).

[0046] Meanwhile, the tuner unit (111) can sequentially select broadcast signals of all stored broadcast channels through the channel memory function among the received broadcast signals and convert them into intermediate frequency signals or baseband video or audio signals.

[0047] Meanwhile, the tuner unit (111) may be equipped with multiple tuners to receive broadcast signals of multiple channels. Alternatively, a single tuner that simultaneously receives broadcast signals of multiple channels is also possible.

[0048] The demodulation unit (112) can perform a demodulation operation by receiving a digital IF signal (DIF) converted by the tuner unit (111). The demodulation unit (112) 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.

[0049] The stream signal output from the demodulation unit (112) 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 (150) and output an audio through the audio output unit (160).

[0050] The sensing unit (120) refers to a device that detects changes within the display device (100) or detects 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.).

[0051] The control unit (180) can check the status of the display device (100) based on the information collected from the sensing unit (120), and if a problem occurs, can notify the user of it or control it to maintain the best condition by adjusting it on its own.

[0052] In addition, the content, picture quality, size, etc. of the image provided to the display module (180) can be controlled differently depending on the viewer detected by the sensing unit or the surrounding lighting, etc., to provide an optimal viewing environment. As smart TVs advance, the functions installed in the display device are increasing, and the sensing unit (20) is also increasing along with it.

[0053] 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, a physical button, etc. The input unit (130) may receive various user commands related to the operation of the display device (100) and transmit a control signal corresponding to the input command to the control unit (180).

[0054] Recently, as the size of the bezel of the display device (100) has become smaller, the number of display devices (100) with a minimal input unit (130) in the form of a physical button exposed to the outside has increased. Instead, a minimum number of physical buttons are located on the back or side, and user input can be received through a remote control device (200) via a touchpad or a user input interface unit (173) described later.

[0055] The storage unit (140) 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 (140) 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).

[0056] 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 also perform a function for temporarily storing video, audio, or data signals received from an external device through the external device interface unit (171). The storage unit (140) may store information regarding a specific broadcast channel through a channel memory function such as a channel map.

[0057] Although the storage unit (140) of FIG. 1 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 within the control unit (180).

[0058] The storage unit (140) 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.).

[0059] The display module (150) 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 (171). The display module (150) can include a display panel having a plurality of pixels.

[0060] 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 (150) 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.

[0061] The display module (150) 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 (150) can be divided into a glasses-free type and a glasses type.

[0062] Meanwhile, the display module (150) is configured as a touch screen and can be used as an input device in addition to an output device.

[0063] The audio output unit (160) receives a signal processed by the control unit (180) and outputs it as voice.

[0064] 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 not only a wired method for transmitting and receiving data through a cable, but also a wireless method using an antenna.

[0065] The interface unit (170) may include at least one of a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device equipped with an identification module, an audio I / O (Input / Output) port, a video I / O (Input / Output) port, and an earphone port.

[0066] As an example of a wireless method, the broadcast receiving unit (110) described above may be included, and may include not only broadcast signals but also mobile communication signals, short-range communication signals, wireless Internet signals, etc.

[0067] 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).

[0068] The external device interface unit (171) can be connected to external devices such as a DVD (Digital Versatile Disk), Blu-ray, game device, camera, camcorder, computer (laptop), set-top box, etc., via wired / wireless connection, and can also perform input / output operations with the external devices.

[0069] In addition, the external device interface unit (171) can establish a communication network with various remote control devices (200) to receive a control signal related to the operation of the display device (100) from the remote control device (200) or transmit data related to the operation of the display device (100) to the remote control device (200).

[0070] The external device interface unit (171) may include a wireless communication unit (not shown) for short-range 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, in mirroring mode, the external device interface unit (171) can receive device information, running application information, application images, etc. from the mobile terminal.

[0071] The network interface unit (172) may provide an interface for connecting the display device (100) to a wired / wireless network, including the Internet. For example, the network interface unit (172) may receive content or data provided by the Internet, a content provider, or a network operator via a network. Meanwhile, the network interface unit (172) may include a communication module (not shown) for connection to a wired / wireless network.

[0072] The external device interface unit (171) and / or the network interface unit (172) may include a communication module for short-range communication such as Wi-Fi (Wireless Fidelity), Bluetooth, Bluetooth Low Energy (BLE), Zigbee, and NFC (Near Field Communication), a communication module for cellular communication such as LTE (long-term evolution), LTE-A (LTE Advance), CDMA (code division multiple access), WCDMA (wideband CDMA), UMTS (universal mobile telecommunications system), and WiBro (Wireless Broadband).

[0073] The user input interface unit (173) can 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, it can transmit / receive a user input signal such as power on / off, channel selection, screen setting, etc. from a remote control device (200), or transmit a user input signal input from a local key (not shown) such as a power key, a channel key, a volume key, a setting value, etc. to the control unit (180), or transmit a user input signal input from a sensor unit (not shown) that senses a user's gesture to the control unit (180), or transmit a signal from the control unit (180) to the sensor unit.

[0074] 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.

[0075] The control unit (180) can demultiplex a stream input through a tuner unit (111), a demodulator unit (112), an external device interface unit (171), or a network interface unit (172), or process demultiplexed signals to generate and output a signal for video or audio output.

[0076] The image signal processed by the control unit (180) can be input to the display module (150) 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 (171).

[0077] The voice signal processed by the control unit (180) can be output as sound to the audio output unit (160). 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 (171). 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.

[0078] 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 (tuning) a broadcast corresponding to a channel selected by the user or a previously stored channel.

[0079] 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 (150) to display an image. At this time, the image displayed on the display module (150) may be a still image or a moving image, and may be a 2D image or a 3D image.

[0080] Meanwhile, the control unit (180) can cause a predetermined 2D object to be displayed within an image displayed on the display module (150). For example, the object can be at least one of a connected web screen (newspaper, magazine, etc.), an EPG (Electronic Program Guide), various menus, widgets, icons, still images, videos, and text.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] Meanwhile, the display device (100) may further include a camera (not shown). The camera can capture images of the user. The camera can be implemented with a single camera, but is not limited thereto, and may also be implemented with multiple cameras. Meanwhile, the camera can be embedded in the display device (100) above the display module (150) or can be separately positioned. Image information captured by the camera can be input to the control unit (180).

[0086] 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 (150) corresponding to the user's location.

[0087] 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.

[0088] 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 (150) for displaying images, and an audio output unit (160) for audio output.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] The charging cradle can be connected to the display device through an externally exposed terminal, or the built-in battery can be charged when brought into proximity using a wireless method.

[0093] The remote control device (200) can transmit user input to the user input interface unit (173). To this end, the remote control device (200) can use Bluetooth, RF (Radio Frequency) communication, infrared (Infrared Radiation) communication, UWB (Ultra-wideband), ZigBee, etc. In addition, the remote control device (200) can receive video, audio, or data signals output from the user input interface unit (173) and display or output the same as audio on the remote control device (200).

[0094] Meanwhile, the above-described display device (100) may be a digital broadcast receiver capable of receiving fixed or mobile digital broadcasts.

[0095] 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.

[0096] 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.

[0097] FIG. 2 is a perspective view illustrating an example of a display device according to embodiments.

[0098] The display device (100) illustrated in FIG. 2 corresponds to the display device (100) illustrated in FIG. 1.

[0099] Referring to FIG. 1 together, the display device (100) may have a rectangular shape including a first long side (First Long Side, LS1), a second long side (Second Long Side, LS2) opposite the first long side (LS1), a first short side (First Short Side, SS1) adjacent to the first long side (LS1) and the second long side (LS2), and a second short side (Second Short Side, SS2) opposite the first short side (SS1).

[0100] Here, the first short side area (SS1) may be referred to as the first side area, the second short side area (SS2) may be referred to as the second side area facing the first side area, the first long side area (LS1) may be referred to as the third side area adjacent to the first side area and the second side area and located between the first side area and the second side area, and the second long side area (LS2) may be referred to as the fourth side area adjacent to the first side area and the second side area and located between the first side area and the second side area and facing the third side area.

[0101] In addition, for convenience of explanation, the lengths of the first and second long sides (LS1, LS2) are illustrated and described as being longer than the lengths of the first and second short sides (SS1, SS2), but it may also be possible for the lengths of the first and second long sides (LS1, LS2) to be approximately the same as the lengths of the first and second short sides (SS1, SS2).

[0102] In addition, the first direction (DR1) below may be a direction parallel to the long side (LS1, LS2) of the display device (100), and the second direction (DR2) may be a direction parallel to the short side (SS1, SS2) of the display device (100). The third direction (DR3) may be a direction perpendicular to the first direction (DR1) and / or the second direction (DR2).

[0103] From another perspective, the side of the display device (100) that displays an image 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 viewing 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. Similarly, the second long side (LS2) may be referred to as the lower side or lower surface. Similarly, the first short side (SS1) may be referred to as the right side or right surface, and the second short side (SS2) may be referred to as the left side or left surface.

[0104] 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). In addition, 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 referred to as a corner. For example, the point where the first long side (LS1) and the first short side (SS1) meet may be referred to as a first corner (C1), the point where the first long side (LS1) and the second short side (SS2) meet may be referred to as a second corner (C2), the point where the second short side (SS2) and the second long side (LS 2) meet may be referred to as a third corner (C3), and the point where the second long side (LS2) and the first short side (SS1) meet may be referred to as a fourth corner (C4).

[0105] Here, the direction from the first short side (SS1) to the second short side (SS2) or the direction from the second short side (SS2) to the first short side (SS1) may be referred to as the left-right direction (LR). The direction from the first long side (LS1) to the second long side (LS2) or the direction from the second long side (LS2) to the first long side (LS1) may be referred to as the up-down direction (UD).

[0106] The display device includes a display module that occupies most of the front surface area and a case that covers the rear side of the display module and packages the display module.

[0107] Recently, display devices (100) can utilize display modules (150) 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.

[0108] 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. While thinner backlight units have enabled thinner LCDs, it's difficult to create them using flexible materials. Furthermore, bending the backlight unit hinders the supply of even light to the LCD, causing screen brightness to fluctuate.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] LED (Light Emitting Diode) panels are a technology that uses one LED element as one pixel, and can reduce the size of the LED element compared to the past, enabling the implementation of a flexible display module (150). Devices previously referred to as 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.

[0113] The display module includes a display panel, a coupling magnet positioned on a rear surface of the display panel, a first power supply unit, and a first signal module. The display panel 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.

[0114] 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.

[0115] The side of the display module (150) that displays an image can be referred to as the front or front. When the display module (150) displays an image, the side from which the image cannot be observed can be referred to as the rear or back.

[0116] FIG. 3 is an exploded perspective view illustrating an example of a display device according to embodiments.

[0117] The display device (100) illustrated in FIG. 3 corresponds to the display device (100) illustrated in FIGS. 1 and 2.

[0118] A display device (100) may include a display module (150), a case top (101) that covers the front perimeter of the display module (150) and wraps around the side perimeter, a bottom cover (102) that covers the back surface of the display module (150), and a back cover (103) that covers a component mounted on the back surface (102a) of the bottom cover (102) and is coupled to the back surface of the bottom cover (102).

[0119] Recently, as the display module (150) becomes thinner, the housing (101, 102) is also becoming thinner, and the thickness of the case top (101) that constitutes the bezel located around the front of the display module (150) can also be thinned or omitted. For example, in the case of an OLED panel, the backlight unit is omitted, and the layered structure exposed laterally is simpler than that of a liquid crystal display panel, so the case top (101) can be omitted.

[0120] The display module (150) includes a display panel (151) on which an image is output and a support panel (153) for supporting the back surface thereof, and the two members can be combined using an adhesive member (152) such as OCA.

[0121] A flexible substrate (155) extending from an end of a display panel (151) can be bent toward the rear to connect with a control substrate mounted on a bottom cover (102). When a liquid crystal panel is used, a light source substrate, an optical sheet, and a liquid crystal panel can be installed in that order using a panel guide to form a display panel (151).

[0122] The type that is hung on a wall includes a structure (not shown) that is fastened to a wall on the back of the display device (100), and the type that is hung on the floor may include a stand (108) that extends to the bottom of the display module (150).

[0123] Figure 4 is an exemplary drawing showing the back surface of a back cover according to embodiments.

[0124] The back cover (210) illustrated in FIG. 4 can correspond to the bottom cover (102) and back cover (103) of the display device (100) described in FIGS. 1 to 3.

[0125] The display device according to the embodiments may correspond to the display device (100) described in FIGS. 1 to 3. In other words, the display device according to the embodiments may include a display module (150), a case top (101) that covers the front perimeter of the display module (150) and wraps around the side perimeter, and a back cover (210) that covers the back surface of the display module (150). In this case, the display module (150) may include a display panel.

[0126] At this time, as described above, as display modules (150) have become thinner recently, the back cover covering the back of the display panel (or display module (150)) is also becoming thinner. In particular, in order to produce a back cover with a thin thickness, the back cover is produced using a thin-wall injection molding method that produces a small thickness rather than a general mold injection molding method.

[0127] However, in conventional cases, there is a problem in that carbonized marks such as gate marks are created on the injected back cover due to the high temperature / high pressure applied to the gate of the mold device during thin-wall injection.

[0128] Referring to FIG. 4, unlike the back cover of a conventional display device, the back cover (210) according to the embodiments may include a plurality of protrusions (215) that protrude from the back surface at a certain height. The back cover (210) according to the embodiments has a plurality of protrusions (215) formed in a pattern on the back surface, thereby creating a diffuse reflection effect and having the effect of concealing carbon marks formed on the back cover (210). A detailed description thereof will be provided with reference to FIGS. 6 and 7.

[0129] Referring to FIG. 2 together, the plurality of protrusions (215) may be formed to extend in the longitudinal direction of the first short side (SS1) or the second short side (SS2). That is, the size of the length corresponding to the longitudinal direction of the first short side (SS1) or the second short side (SS2) of the plurality of protrusions (215) may be the same as the size of the length of the first short side (SS1) or the second short side (SS2) of the display panel (or display module (150)).

[0130] In addition, a plurality of protrusions (215) can be formed at a certain distance apart in the longitudinal direction of the first long side (LS1) or the second long side (LS2). A detailed description thereof will be provided in Fig. 5.

[0131] FIG. 5 is an exemplary drawing showing a cross-section of a back cover according to the embodiments of FIG. 4, cut along line A-A'.

[0132] More specifically, (a) to (d) of FIG. 5 illustrate examples of cross-sections of the plurality of protrusions (215) illustrated in FIG. 4. In this case, the cross-sections may correspond to cross-sections in a direction perpendicular to the back surface of the back cover (210). FIG. 5 is an exemplary diagram illustrating only two of the plurality of protrusions (215).

[0133] Referring to FIG. 5, the plurality of protrusions (215) may be formed in a cross-section perpendicular to the back surface of the back cover (210) in the form of a semicircle or semi-ellipse (see (a) of FIG. 5), a triangle (see (b) of FIG. 5), a rectangle (see (c) of FIG. 5), or a trapezoid (see (d) of FIG. 5).

[0134] The plurality of protrusions (215) can be formed so that the cross-sectional area becomes smaller from the lower part to the upper part, as shown in (a), (b) and (d) of FIG. 5.

[0135] In addition, as described in FIG. 4, a plurality of protrusions (215) may be formed to be spaced apart by a certain distance (pitch) in the longitudinal direction of the first long side (SL1) or the second long side (SL2) of the display panel (or display module (150)). In this case, the spaced apart certain distance (pitch) may mean the distance from the center of one of the plurality of protrusions (215) to the center of another protrusion (215) located immediately to the side, as illustrated in FIG. 5.

[0136] It is preferable that the pitch be formed at 3000 μm, but it can be formed within + / - 10% of 3000 μm. In other words, a plurality of protrusions (215) can be formed spaced apart from each other by a certain distance of 2700 μm or more and 3300 μm or less.

[0137] Additionally, as described in FIG. 4, a plurality of protrusions (215) can be formed by protruding a certain height from the back surface of the back cover (210).

[0138] It is preferable that the height be formed to be 15 μm, but it can be formed within + / - 10% of 15 μm. In other words, the height of the plurality of protrusions (215) can be formed to be 13.5 μm or more and 16.5 μm or less.

[0139] Accordingly, the plurality of protrusions (215) can be formed with an aspect ratio, i.e., a ratio of length to width of 1 / 200. In other words, the aspect ratio can be height / pitch. The lower the aspect ratio, the better the diffuse reflection can occur, and as a result, the better the diffuse reflection can occur, thereby improving the concealment ability.

[0140] The plurality of protrusions (215) formed on the back cover (210) according to the embodiments can be formed with an aspect ratio of 1 / 200 to implement a low value, and as a result, they cause good reflection, which has the effect of concealing carbon marks formed on the back cover (210).

[0141] In addition, when having the same Aspect Ratio value, the plurality of protrusions (215) may have a higher transferability or transferability when the cross-section is formed as a semicircle or semi-ellipse as shown in (a) of FIG. 5 than when the cross-section is formed as a triangle as shown in (b) of FIG. 5.

[0142] Here, "transferability" or "transferability" can refer to the degree to which the shape of the injection-molded product is created identical to the mold design. For example, it can mean that it is difficult to properly create the shape of the injection-molded product in a mold design with low transferability or transferability. Alternatively, it can mean that it is possible to create an injection-molded product with the same shape as a mold design with high transferability or transferability.

[0143] Accordingly, in the case of a plurality of protrusions (215) having a cross-section formed as a semicircle or a semi-ellipse as illustrated in (a) of FIG. 5, since the transferability or transferability is relatively high, a back cover (210) having these plurality of protrusions (215) formed as a pattern on the back surface can be implemented to have the same shape as the mold design. On the other hand, in the case of a plurality of protrusions (215) having a cross-section formed as a triangle as illustrated in (b) of FIG. 5, since the transferability or transferability is relatively low, a back cover (210) having these plurality of protrusions (215) formed as a pattern on the back surface may not be implemented to have the same shape as the mold design.

[0144] Figure 6 is a table and graph showing the defective area ratio and reflectivity of the back cover according to embodiments.

[0145] More specifically, a to g illustrated in the table and graph of FIG. 6 represent examples of patterns formed by a plurality of protrusions (215). In other words, a to g illustrated in the table and graph of FIG. 6 represent examples of patterns formed according to cross-sections of a plurality of protrusions (215).

[0146] The defective area ratio illustrated in Fig. 6 represents the ratio of the area occupied by carbonized marks such as gate marks among the total area of ​​the back surface of the back cover (210). In addition, the reflectance_diffuse reflection illustrated in Fig. 6 represents the ratio of light that is diffusely reflected among the light incident toward the back surface of the back cover (210).

[0147] As described above, if the diffuse reflectivity is high, marks formed on the back surface may not be visible, thereby improving the hiding power. Therefore, a back cover (210) with a high diffuse reflectivity (reflectivity_diffuse reflection) may have improved hiding power, and as a result, the ratio of the area occupied by carbon marks on the back surface may be small. In other words, if the reflectivity_diffuse reflection is high, the defective area ratio may be small. In other words, the reflectivity_diffuse reflection and the defective area ratio may be inversely proportional.

[0148] Among the examples of patterns illustrated in FIG. 6, g represents a back cover (210) having a plurality of protrusions (215) formed in a semicircle or semi-ellipse cross-section. That is, as illustrated in FIG. 6, among the embodiments of FIG. 5, the back cover (210) having a pattern formed by a plurality of protrusions (215) formed in a semicircle or semi-ellipse cross-section has the highest reflectivity_diffuse reflection, and therefore, the back cover (210) in this case has the lowest defective area ratio.

[0149] Figure 7 is an exemplary diagram comparing a back cover according to embodiments with a conventional back cover.

[0150] More specifically, the back cover (210a) illustrated in FIG. 7 represents a back cover (210) according to embodiments in which a protrusion (215) is formed, and the back cover (210b) illustrated in FIG. 7 represents a conventional back cover in which a protrusion (215) is not formed.

[0151] Referring to Fig. 7, the back cover (210a) in which a plurality of protrusions (215) are formed in a pattern on the back surface does not show carbonization marks, etc., whereas the back cover (210b) in which no protrusions (215) are formed on the back surface may show carbonization marks, etc.

[0152] Accordingly, the back cover (210a) according to the embodiments has a pattern formed with a plurality of protrusions (215) on the back surface, thereby having the effect of concealing carbon marks, etc. located on the back surface from being visible to the user.

[0153]

[0154] The detailed description of the preferred embodiments of the present invention disclosed above has been provided to enable those skilled in the art to implement and practice the present invention. While the above description has been made with reference to preferred embodiments of the present invention, those skilled in the art will appreciate that various modifications and variations can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can utilize the individual components described in the above-described embodiments in combination with each other.

[0155] Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Display panel; and Including a back cover arranged on the back of the above display panel, The above back cover includes a plurality of protrusions protruding at a certain height from the back surface of the above back cover, A display device, wherein the plurality of protrusions are spaced apart from each other by a certain distance in the first direction to form a pattern.

2. In paragraph 1, A display device, wherein the cross-sectional area of the plurality of protrusions decreases from the bottom to the top.

3. In paragraph 1, A display device, wherein the cross-section of the plurality of protrusions is formed as at least one of a semicircle, a semi-ellipse, or a triangle.

4. In paragraph 1, A display device, wherein the above-mentioned distance is formed to be 2700μm or more and 3300μm or less.

5. In paragraph 1, A display device, wherein the above-mentioned predetermined height is formed to be 13.5 μm or more and 16.5 μm or less.

6. In paragraph 1, A display device, wherein the ratio of the above-mentioned constant height and the above-mentioned constant distance is formed as 1 to 200.

7. In paragraph 1, A display device, wherein the plurality of protrusions are formed to extend in a second direction perpendicular to the first direction.

8. For the back cover placed on the back of the display panel, Contains a plurality of protrusions protruding at a certain height from the back surface, A back cover wherein the plurality of protrusions are spaced apart from each other by a certain distance in the first direction to form a pattern.

9. In paragraph 1, A back cover in which the above-mentioned plurality of protrusions have a cross-sectional area that decreases from the bottom to the top.

10. In paragraph 1, A back cover, wherein the cross-section of the plurality of protrusions is formed as at least one of a semicircle, a semi-ellipse, or a triangle.

11. In paragraph 1, The above-mentioned back cover is formed with a distance of 2700μm or more and 3300μm or less.

12. In paragraph 1, A back cover formed with the above-mentioned predetermined height being 13.5 μm or more and 16.5 μm or less.

13. In paragraph 1, A back cover formed with a ratio of the above-mentioned constant height and the above-mentioned constant distance being 1 to 200.

14. In paragraph 1, A back cover, wherein the plurality of protrusions are formed to extend in a second direction perpendicular to the first direction.

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