Display device

Abstract

Provided is a backlight unit comprising: a heat sink including a diffuser plate supporter protruding forward; a light source substrate mounted on a front surface of the heat sink and having a first opening formed at a position corresponding to the diffuser plate supporter; a plurality of light-emitting elements arranged at a predetermined interval on the front surface of the light source substrate; a reflector positioned on the front surface of the light source substrate and including a second opening at a position corresponding to the diffuser plate supporter and a third opening at a position corresponding to the light-emitting elements; and a diffuser plate having a rear surface in contact with a front end of the diffuser plate supporter and spaced apart from the light emitting elements by a predetermined distance, wherein the diffuser plate supporter includes: a support portion in contact with the rear surface of the diffuser plate; and a connection portion that connects the support portion and the heat sink.

Description

display device

[0001] The present invention relates to a display device that can easily and inexpensively implement a structure in which light provided from a light source can be uniformly emitted forward.

[0002] As the information society develops, the demand for display devices is also increasing in various forms, and in response to this, recent displays 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 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] Recent technological advancements have allowed the size of LEDs to be reduced, leading to the emergence of mini LED or micro LED display devices that implement LEDs as individual pixels.

[0005] Display devices utilizing light sources like LEDs can transform point sources into surface sources by diffusing light. Furthermore, uneven intensity of light emitted forward can lead to product defects. Therefore, achieving uniform brightness regardless of display location is crucial.

[0006] The purpose of the present invention is to provide a display device that can easily and inexpensively implement a structure in which light provided from a light source can be uniformly emitted forward.

[0007] A backlight unit is provided, comprising: a heat sink including a diffuser supporter protruding forward; a light source substrate mounted on a front surface of the heat sink and having a first opening formed at a position corresponding to the diffuser supporter; a plurality of light emitting elements arranged at a predetermined interval on the front surface of the light source substrate; a reflector positioned on the front surface of the light source substrate and including a second opening at a position corresponding to the diffuser supporter and a third opening at a position corresponding to the light emitting elements; and a diffuser plate having a rear surface in contact with a front end of the diffuser supporter and spaced apart from the light emitting elements by a predetermined distance, wherein the diffuser supporter includes a support portion in contact with the rear surface of the diffuser plate; and a connection portion connecting the support portion and the heat sink.

[0008] The above diffusion plate supporter can be formed by pressing the heat sink toward the front.

[0009] The above diffuser supporter may have an arch shape extending in the first direction.

[0010] The length of the above-mentioned diffuser supporter in the first direction may be greater than the height in the front-back direction.

[0011] The heat sink includes a pair of supporter slits formed to extend in a first direction and spaced apart in a second direction, and the diffuser supporter can be formed by pressing forward between the pair of supporter slits.

[0012] The support member may be positioned at the center of the first direction and may include a folding end in which both ends in the second direction are folded or bent backward.

[0013] The above connecting portion may include a neck elastic portion located on both sides of the first direction of the support portion and having a smaller width in the second direction than the support portion.

[0014] The above connecting portion may include a bendable elastic portion that is bent in an S shape in the front-rear direction.

[0015] The above-mentioned diffuser supporter may further include a reflective film attached to the front.

[0016] A display device is provided, comprising: a liquid crystal panel; an optical sheet layer positioned on a rear surface of the liquid crystal panel; and a backlight unit positioned on a rear surface of the optical sheet layer, wherein the backlight unit comprises: a heat sink including a diffuser supporter protruding forward; a light source substrate mounted on a front surface of the heat sink and having a first opening formed at a position corresponding to the diffuser supporter; a plurality of light emitting elements arranged at a predetermined interval on the front surface of the light source substrate; a reflector positioned on the front surface of the light source substrate and including a second opening at a position corresponding to the diffuser supporter and a third opening at a position corresponding to the light emitting elements; and a diffuser plate having a rear surface in contact with a front end of the diffuser supporter and spaced apart from the light emitting elements by a predetermined distance, wherein the diffuser supporter includes a support portion in contact with the rear surface of the diffuser plate; and a connection portion connecting the support portion and the heat sink.

[0017] The display device of the present invention can easily implement a diffuser supporter and can omit an assembly process, thereby simplifying the manufacturing process and reducing manufacturing costs.

[0018] 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.

[0019] Figure 1 is a block diagram illustrating a display related to the present invention.

[0020] FIG. 2 is a perspective view illustrating a display according to one embodiment of the present invention.

[0021] FIG. 3 is an exploded perspective view illustrating a display device according to one embodiment of the present invention.

[0022] Figure 4 is a partial cross-sectional perspective view of a conventional display device.

[0023] FIG. 5 is a partial cross-sectional perspective view of a display device according to one embodiment of the present invention.

[0024] FIG. 6 is a drawing illustrating a method for manufacturing a diffuser supporter of a display device according to one embodiment of the present invention.

[0025] Fig. 7 is an example showing the AA cross-section of Fig. 5.

[0026] FIG. 8 is a drawing illustrating a method for manufacturing a diffuser supporter of a display device according to one embodiment of the present invention.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Singular expressions include plural expressions unless the context clearly indicates otherwise.

[0031] 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.

[0032] Figure 1 is a block diagram for explaining a display device (100) related to the present invention.

[0033] The above display device (100) may include a wireless communication unit (110), an input unit (120), a sensing unit (140), an output unit (150), a cooling unit (160), a memory (170), a control unit (180), and a power supply unit (190). The components illustrated in FIG. 1 are not essential for implementing the display device (100), and thus the display device (100) described in this specification may have more or fewer components than the components listed above.

[0034] More specifically, among the above components, the wireless communication unit (110) may include one or more modules that enable wireless communication between the display device (100) and a wireless communication system, between the display device (100) and another display device (100), or between the display device (100) and an external server. In addition, the wireless communication unit (110) may include one or more modules that connect the display device (100) to one or more networks.

[0035] This wireless communication unit (110) may include at least one of a mobile communication module, a wireless Internet module, and a short-range communication module.

[0036] The input unit (120) may include a camera (121) or a video input unit for inputting a video signal, a microphone (122) or an audio input unit for inputting an audio signal, and a user input unit (123, for example, a touch key, a mechanical key, etc.) for receiving information from a user. Voice data or image data collected by the input unit (120) may be analyzed and processed into a user's control command.

[0037] Recently, as the bezel size of display devices (100) has become smaller, there has been an increase in the number of display devices (100) with a minimal number of input units (130) in the form of physical buttons exposed externally. Instead, a minimum number of physical buttons are positioned on the back or side, and user input can be received by detecting signals from a remote control device through a touchpad or user input interface.

[0038] The sensing unit (140) may include one or more sensors for sensing at least one of information within the display device (100), information about the surrounding environment surrounding the display device (100), and user information. For example, the sensing unit (140) may include at least one of a proximity sensor, an illumination sensor, a touch sensor, an RGB sensor, an infrared sensor (IR sensor), a fingerprint recognition sensor, an ultrasonic sensor, an optical sensor (e.g., a camera (see 121)), a microphone (see 122), a battery gauge, an environmental sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a heat detection sensor, a gas detection sensor, etc.), and a chemical sensor (e.g., an electronic nose, a healthcare sensor, a biometric recognition sensor, etc.). Meanwhile, the display device (100) disclosed in this specification can utilize information sensed by at least two of these sensors in combination.

[0039] The control unit (180) can check the status of the display device (100) based on the information collected from the sensing unit (140), 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.

[0040] The output unit (150) is for generating output related to visual, auditory, or tactile sensations, and may include at least one of a display (200) and an audio output unit (152). The display (200) may be formed as a touch screen by forming a mutual layer structure with a touch sensor or forming an integral structure. This touch screen may function as a user input unit (123) that provides an input interface between the display device (100) and the user, and at the same time, provide an output interface between the display device (100) and the user.

[0041] The display (200) can be a PDP (Plasma Display Panel), an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diode), a flexible display, etc., and may also be a 3D display. The 3D display (200) can be divided into a glasses-free type and a glasses type.

[0042] Meanwhile, the display (200) is configured as a touch screen and can be used as an input device in addition to an output device.

[0043] As shown in FIG. 2, the display device (100) of the present invention can implement a large-screen display (200) by arranging multiple displays (200) in a grid pattern.

[0044] The cooling unit (160) refers to a configuration that discharges heat inside the display device (100), and may include a heat pipe, cooling fins, a circulation fan that promotes internal air circulation, a vent hole, etc.

[0045] A display device (100) installed for the purpose of exhibition advertising operates for long periods of time and outputs high brightness so that it can be easily seen from the outside. Therefore, heat generated from the display (151) and control unit (180) may affect each component of the display device (100), causing malfunctions, etc. Therefore, a heat dissipation structure that dissipates internal heat is very important.

[0046] In a display device (100), heat dissipation is implemented in various ways. Depending on the object that performs heat transfer during the heat dissipation process, it can be divided into air-cooling and water-cooling. In the case of air-cooling, heat dissipation efficiency can be increased by maximizing the surface area using heat dissipation fins, etc., and in the case of water-cooling, heat dissipation efficiency can be increased by guiding the path and sealing of the heat transfer material using a structure such as a heat pipe.

[0047] These heat dissipation cooling methods can be used alone or in combination with two or more as needed.

[0048] In addition, the memory (170) stores data that supports various functions of the display device (100). The memory (170) can store a plurality of application programs (or applications) running on the display device (100), data for the operation of the display device (100), and commands. At least some of these application programs can be downloaded from an external server via wireless communication. In addition, at least some of these application programs can exist on the display device (100) from the time of shipment for the basic functions of the display device (100) (e.g., call receiving and sending functions, message receiving and sending functions). Meanwhile, the application programs can be stored in the memory (170), installed on the display device (100), and driven by the control unit (180) to perform the operations (or functions) of the display device (100).

[0049] In addition to the operations related to the above application program, the control unit (180) typically controls the overall operation of the display device (100). The control unit (180) can provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the components discussed above or by operating an application program stored in the memory (170).

[0050] In addition, the control unit (180) can control at least some of the components to drive an application program stored in the memory (170). Furthermore, the control unit (180) can operate at least two or more of the components included in the display device (100) in combination to drive the application program.

[0051] 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.

[0052] The image signal processed in the control unit (180) can be input to the display (200) and displayed as an image corresponding to the image signal.

[0053] The voice signal processed in the control unit (180) can be output as sound to the audio output unit (160). In addition, the voice signal processed in the control unit (180) can be input to an external output device through the external device interface unit.

[0054] In addition, the control unit (180) can control the display device (100) by a user command input through the user input interface unit or an internal program. Meanwhile, the control unit (180) can control the display (200) to display an image. At this time, the image displayed on the display (200) can be a still image or a moving image, and can be a 2D image or a 3D image.

[0055] Meanwhile, the control unit (180) can cause a predetermined 2D object to be displayed within an image displayed on the display (200). 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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 (200) for displaying images, and an audio output unit (152) for audio output.

[0061] 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.

[0062] 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.

[0063] At least some of the above components may cooperate with each other to implement the operation, control, or control method of the display device (100) according to various embodiments described below. In addition, the operation, control, or control method of the display device (100) may be implemented on the display device (100) by driving at least one application program stored in the memory (170).

[0064] 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.

[0065] FIG. 2 is a perspective view illustrating a display device (100) according to one embodiment of the present invention.

[0066] The display device (100) of the present invention may be formed entirely as one module, as shown in (a) of FIG. 2, or may be formed as a large screen by arranging multiple displays (200) in a grid shape on the cover bottom (102), as shown in (b) of FIG. 2.

[0067] The display (200) may have a rectangular shape and may be long in the horizontal direction, but there are also displays (200) that can be rotated or have a long vertical length. For convenience of explanation, the following description will be based on a display device that is long in the horizontal direction, but is not limited thereto.

[0068] FIG. 3 is an exploded perspective view illustrating a display (200) according to one embodiment of the present invention.

[0069] The display (200) may be subject to bending or breakage due to the use of a thin substrate or sheet material. It may include a heat sink (230) that can support the back surface of the display while providing a heat dissipation effect. The heat sink (230) is made of a metal material, and the heat sink (230) of the present invention may be positioned on the back surface of the light source substrate (220) on which the light source (227) is mounted.

[0070] A light source substrate (220) positioned in front of a heat sink (230) is mounted with a plurality of light sources (227) in an array on the front. An LED can be used as the light source (227). LED is an abbreviation for light emitting diode (LED) and is a diode that emits light when the direction of current matches a certain electrode direction.

[0071] LEDs can provide high-brightness light with high efficiency, and are mainly used as backlights for lighting or displays. Recently, as the manufacturing cost and size of LEDs have gradually decreased, the market for LED displays that use the LED itself as a pixel has also expanded. The display (200) of the present invention includes a backlight unit (BLU) that provides light, and a display panel (210) that adds color to the light supplied from the backlight unit (BLU) to output image information. The display panel (210) may include a liquid crystal panel that selectively transmits light, and a color filter for implementing color on the liquid crystal panel may be arranged.

[0072] A guide panel (290) can be used to align the positions of the backlight unit (BLU) and the display panel (210). The guide panel (290) can have a frame shape like a picture frame, and the display panel (210) can be mounted on the front surface and the backlight unit (BLU) can be mounted on the back surface.

[0073] A backlight unit (BLU) may include an optical sheet layer (260) including a light source substrate (220) on which a light-emitting element (227) that emits light is mounted, a reflector (250) positioned on the front of the light source substrate (220), and a diffuser plate (261) positioned on the front of the reflector (250).

[0074] A plurality of light emitting diodes (227) are arranged in a grid pattern on a light source substrate (220). The light source substrate (220) receives power, applies it to each light emitting diode (227), and provides light toward the display panel (210) located on the front.

[0075] A silicone lens may be included to allow light emitted from the light-emitting element (227) to spread within a predetermined range. The silicone lens may include a light-transmitting material and a diffusion agent to enhance the diffusion effect. The silicone lens covers the light-emitting element (227) and may be positioned within a predetermined area around the light-emitting element (227).

[0076] If the light provided from the light emitting element (227) is reflected by the optical sheet layer (260) or the display panel (210) and is not emitted in the front direction, the brightness of the display device (100) decreases. To prevent the decrease in brightness, a reflector (250) may be additionally provided so that all of the light emitted from the light emitting element (227) is directed in the front direction.

[0077] The reflector (250) is attached to the front surface of the light source substrate (220) and may include a plurality of openings (253) that expose the light cloud (227) at positions corresponding to the light source (227).

[0078] The diffuser (261) diffuses the light provided from the light source (227) so that it appears as a surface light source rather than a point light source, thereby providing uniform brightness to the front. The light from the light source (227) passing through the diffuser (261) can have continuity with the light from the neighboring light source (227), thereby implementing a backlight unit with uniform brightness.

[0079] Since multiple light sources (227) are arranged at a predetermined distance apart, light provided from one light source (227) must provide light to a diffusion plate (261) having a larger area than the light source (227). The light source (227) and the diffusion plate (261) can be arranged at a predetermined distance apart so that the light emitted from the light source (227) spreads over a predetermined range.

[0080] A diffuser supporter (237) can be used to maintain the distance between the light source (227) and the diffuser (261). As the size of the display device (100) increases, the optical sheet (260) including the diffuser (261) may sag due to the lack of rigidity of the sheet material.

[0081] The diffuser supporter (237) is arranged between a plurality of light sources (227) to maintain the distance between the light source substrate (220) on which the light sources (227) are mounted and the diffuser (261). The diffuser supporter (237) must be arranged to avoid the plurality of light sources (227), so that the mounting area is limited. In addition, if the size of the diffuser supporter (237) is large, it is preferable to block the light of the light sources (227) so that the area where the diffuser supporter (237) and the diffuser (261) meet is minimized.

[0082] However, if pressure is applied to the front of the display (200), scratches may occur on the diffuser supporter (237) or the display panel (210) on the front may be damaged. Therefore, it is advantageous to form the diffuser supporter (237) as small as possible.

[0083] In addition, in order to prevent damage to the display panel (210) and the diffuser plate (261), the diffuser plate supporter (237) may have elasticity. For elasticity, the diffuser plate supporter (237) may include a curved portion. Fig. 4 is a partial cross-sectional perspective view of a conventional display device (100). In order to provide a diffuser plate supporter (270) that is small in size, has minimal influence on the brightness of the display (200), and has elasticity, the diffuser plate supporter (270) may be manufactured as a separate component using an injection molding material. The injection molded diffuser plate supporter (270) may be fitted and coupled to a substrate or a heat sink (230) as illustrated in Fig. 4.

[0084] However, the conventional diffuser supporter (270) requires a separate manufacturing and assembly process, and the diffuser supporter (270) can be fixed by sliding and fitting or rotating to assemble the diffuser supporter (270) onto the heat sink (230) or the substrate. In other words, a certain amount of free space is required in addition to the mounting space for assembling the diffuser supporter (270).

[0085] In order to solve the problems of the diffuser supporter (270) composed of a conventional injection molded product, the present invention provides a diffuser supporter (237) configured as an integral part with a heat sink (230). The diffuser supporter (237) of the present invention has the advantage of reducing costs by reducing the number of parts and omitting a separate assembly process, and of having less space constraints.

[0086] FIG. 5 is a drawing illustrating a method for manufacturing a diffuser supporter (237) of a display device (100) according to one embodiment of the present invention. The diffuser supporter (237) is positioned between light sources (227) forming an array, and is characterized in that it is manufactured by deforming a portion of a heat sink (230). Referring to FIG. 5 (a), a pair of supporter slits (238) extending in a first direction (D1) and spaced apart in a second direction (D2) can be formed in the heat sink (230).

[0087] The supporter slit (238) is formed by punching the heat sink (230) and may have a symmetrical shape in the second direction. The portion located between the supporter slits (238) may be pushed forward to form a diffusion plate supporter (237) protruding forward as in (b) of 5.

[0088] FIG. 6 is a side view illustrating examples of a diffuser supporter (237) of a display device (100) according to one embodiment of the present invention. The diffuser supporter (237) may have an arch shape protruding most forward in the center as shown in (a) of FIG. 6, or may also have a shape in which the central portion protrudes sharply as shown in (b) of FIG. 6. When pressing forward from the back surface of the heat sink (230), the shape of the pressurizing mold may be varied to form various shapes.

[0089] The diffuser supporter (237) may be composed of a support portion (2371) that protrudes most forward and supports the back surface of the diffuser plate (261) and a connecting portion (2372) that extends from the heat sink (230) to the support portion (2371). The support portion (2371) may include a curved surface or a flat surface with a narrow area, as a sharp point may cause a mark on the diffuser plate (261).

[0090] The support portion (2371) must be a smooth surface without sharp protrusions, as it is a part that comes into direct contact with the diffuser plate (261). However, when cutting the heat sink (230) to form the support slit (238), the cut surface may not be smooth and small protrusions called burrs (239) may be formed. Burrs (239) refer to protrusions that are formed on the cut surface due to the metal material material melting or being pushed out during cutting.

[0091] In order to prevent the cut end from being located on the support member (2371), the present invention can form the folded end (2374) by folding the cut end on both sides of the second direction of the support member (2371) backward so that it is spaced apart from the diffuser plate (261), as shown in (b) of FIG. 5.

[0092] The folding section (2374) is formed with a mold having a groove corresponding to the shape of the diffuser supporter (237) formed on the front side when pressurized from the back side to form a diffuser supporter (237) that protrudes forward. At this time, if the second direction width of the mold is formed narrower than a pair of supporter slits (238), both sides of the support portion (2371) can be folded in the back direction to form the folding section (2374).

[0093] Fig. 7 is an embodiment illustrating a cross-section AA of Fig. 5. As in (a) of Fig. 7, the support portion (2371) and the folding end (2374) may be configured to form a right angle so that the support portion (2371) forms a plane, or as in (b) of Fig. 7, the support portion (2371) and the folding end (2374) may be configured to form an arch so that the support portion (2371) makes point contact with the diffuser plate (261).

[0094] Since the cutting member (239) is arranged to be spaced apart from the contact point with the diffuser plate (261) of the support member (2371) in the rear direction, the diffuser plate (261) can be prevented from being damaged by the cutting member (239). Since the rigidity increases when the metal plate includes a folded portion such as a folding end (2374), if the length of the folding end (2374) in the first direction is long, the rigidity of the diffuser plate supporter (237) can increase. However, as described above, the diffuser plate supporter (237) must have elasticity not only to support the diffuser plate (261), but also to prevent the diffuser plate (261) or the display panel (210) from being easily deformed by an external impact and damaged. The connection portion (2372) of the diffuser plate supporter (237) of the present invention can have elasticity so that it can be deformed by an external impact and then restored to its original shape.

[0095] Since the heat sink (230) contains a metal material, it can have elasticity within a certain range. However, if the heat sink (230) is configured to be thick to support the light source substrate (220), it may be difficult to secure elasticity based on the properties of the material itself.

[0096] For example, as shown in (b) of Fig. 6, the connecting portion (2372) may include a bending elastic portion (2372) that forms an S-shaped curved surface bent in the front-back direction. The bending elastic portion (2372) has elasticity that allows the bent angle to be deformed and restored, and thus the connecting portion (2372) of the present embodiment may have elasticity that moves the support portion (2371) in the front-back direction.

[0097] The connecting portion (2372) of the arch-shaped diffuser supporter (237) of the form as shown in (b) of Fig. 5 may lack elasticity. To achieve elasticity, the connecting portion (2372) may be configured to have a thinner width in the second direction than the supporting portion (2371). Alternatively, as shown in (a) of Fig. 5, the connecting portion (2372) may be partially provided with a thin elastic neck portion (2377). When forming the supporter slit (238), at least a portion of the connecting portion (2372) may be formed to be thinner than the supporting portion (2371) so that the connecting portion (2372) has elasticity.

[0098] Fig. 8 is a partial cross-sectional perspective view of a display device (100) according to one embodiment of the present invention. A light source substrate (220) may be mounted on the front surface of a heat sink (230) having a diffuser supporter (237), and a reflector (250) may be laminated on the front surface of the light source substrate (220).

[0099] In order for the diffuser supporter (237) protruding forward from the heat sink (230) to support the back surface of the diffuser (261), the light source substrate (220) and the reflector (250) may include a first opening (221) and a second opening (252) through which the diffuser supporter (237) can pass.

[0100] The second opening (252) may be smaller than the first opening (221), and the heat sink (230) may protrude forward to support the reflector (250) by an amount corresponding to the size difference between the first opening (221) and the second opening (252).

[0101] Additionally, the reflector (250) may include a plurality of third openings (253) so that a plurality of light sources formed on the light source substrate (220) are exposed forward.

[0102] Conventional injection molding allows for free configuration of color, so a diffuser supporter (237) can be made in a bright color. However, when a diffuser supporter (237) is configured using a heat sink (230), a problem may arise where the diffuser supporter (237) made of metal becomes dark due to issues such as the color of the metal.

[0103] To solve the above problem, a reflective film can be attached to the front of the diffuser supporter (237) or the reflectivity can be increased through a glossy finish, so that light emitted from the light source can be provided forward.

[0104] As described above, the display device (100) of the present invention can easily implement a diffuser supporter (237) and can omit the assembly process, thereby simplifying the manufacturing process and reducing manufacturing costs.

[0105] 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

1. A heat sink including a forward-protruding diffuser supporter; A light source substrate mounted on the front surface of the heat sink and having a first opening formed at a position corresponding to the diffuser supporter; A plurality of light-emitting elements arranged at a predetermined interval on the front surface of the above light source substrate; A reflector positioned on the front side of the light source substrate and including a second opening at a position corresponding to the diffuser supporter and a third opening at a position corresponding to the light emitting element; and The back surface is in contact with the front end of the diffusion plate supporter and includes a diffusion plate spaced apart from the light emitting element by a predetermined distance, The above diffuser supporter is, A support member that is in contact with the back surface of the above diffuser plate; and A backlight unit including a connecting portion connecting the support portion and the heat sink.

2. In paragraph 1, A backlight unit characterized in that the above diffusion plate supporter is formed by pressing the heat sink toward the front.

3. In paragraph 1, A backlight unit, characterized in that the above diffuser supporter has an arch shape extending in the first direction.

4. In paragraph 3, The above diffuser supporter A backlight unit characterized in that the length in the first direction is greater than the height in the front-back direction.

5. In paragraph 1, The above heat sink comprising a pair of supporter slits formed extending in a first direction and spaced apart in a second direction; The above diffuser supporter A backlight unit characterized by being formed by applying pressure forward between the pair of supporter slits.

6. In paragraph 5, The above support A backlight unit characterized by including a folding end positioned in the center of the first direction and having both ends in the second direction folded or bent backward.

7. In paragraph 5, The above connection part Located on both sides of the first direction of the above support portion A backlight unit characterized by including a neck elastic member having a smaller width in the second direction than the support member.

8. In paragraph 1, The above connection part A backlight unit characterized by including a bendable elastic member that is bent in an S shape in the forward-reverse direction.

9. In paragraph 1, A backlight unit further characterized by including a reflective film attached to the front of the diffusion plate supporter.

10. Liquid crystal panel; An optical sheet layer positioned on the back surface of the liquid crystal panel; and Including a backlight unit located on the back surface of the optical sheet layer, The above backlight unit, A heat sink including a forward-protruding diffuser supporter; A light source substrate mounted on the front surface of the heat sink and having a first opening formed at a position corresponding to the diffuser supporter; A plurality of light-emitting elements arranged at a predetermined interval on the front surface of the above light source substrate; A reflector positioned on the front side of the light source substrate and including a second opening at a position corresponding to the diffuser supporter and a third opening at a position corresponding to the light emitting element; and The back surface is in contact with the front end of the diffusion plate supporter and includes a diffusion plate spaced apart from the light emitting element by a predetermined distance, The above diffuser supporter is, A support member that is in contact with the back surface of the above diffuser plate; and A display device including a connecting portion connecting the support portion and the heat sink.

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