Display apparatus

Abstract

This display apparatus comprises: a display panel; light sources provided to emit light; a plurality of substrate bars which are spaced apart from each other in a first direction and extend in a second direction and on which the light sources are mounted; a bottom chassis; and a plurality of bar fixers provided to fix the plurality of substrate bars to the bottom chassis. Each of the plurality of substrate bars includes: a central extending portion that extends in the second direction from the center of the substrate bar; and a coupling portion which is located on the central extending portion and positioned on one side, in the first direction, of one of the light sources mounted to the substrate bar. The plurality of bar fixers are each arranged on the respective coupling portions.

Description

display device

[0001] The present disclosure relates to a display device.

[0002] A display device is a type of output device that converts acquired or stored electrical information into visual information and displays it to the user. Display devices can be used in a variety of fields, including homes and businesses.

[0003] Display devices include monitors connected to personal computers or server computers, portable computer devices, navigation terminals, general television devices, Internet Protocol television (IPTV) devices, and portable terminal devices such as smart phones, tablet PCs, personal digital assistants (PDAs), or cellular phones. Various display devices can be used in industrial settings to play images such as advertisements or movies, or for various other types of audio / video systems.

[0004] The display device includes a light source module for converting electrical information into visual information, and the light source module includes a plurality of light sources for independently emitting light.

[0005] Each of the plurality of light sources includes, for example, a light emitting diode (LED) or an organic light emitting diode (OLED). For example, the light emitting diode or organic light emitting diode may be mounted on a circuit board or substrate.

[0006] According to one aspect of the present disclosure, a display device having an improved structure is provided so that a light source substrate can be efficiently fixed to a bottom chassis.

[0007] According to one aspect of the present disclosure, a display device having an improved structure is provided so as to improve durability and performance of the product.

[0008] According to one aspect of the present disclosure, a display device having an improved structure is provided so as to improve manufacturing efficiency of the product and reduce manufacturing cost of the product.

[0009] According to one aspect of the present disclosure, a display device having an improved structure for facilitating repair or replacement of components of a light source substrate is provided.

[0010] According to one aspect of the present disclosure, a display device is provided having an improved structure that prevents a joint portion where a substrate fixer is coupled to a light source substrate from interfering with a power supply line of the light source substrate.

[0011] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0012] Additional aspects will be partly explained in the following description, partly will be apparent from the description, or may be learned by practice of the embodiments presented.

[0013] According to one aspect of the present disclosure, a display device may include a display panel, a plurality of light sources configured to irradiate light toward the display panel, a plurality of substrate bars on which the plurality of light sources are mounted, the substrate bars being spaced apart from each other along a first direction and extending in a second direction different from the first direction, a bottom chassis configured to support the plurality of substrate bars, and a plurality of bar fixers configured to fix the plurality of substrate bars to the bottom chassis. Each of the plurality of substrate bars may include a central extension portion extending in the second direction from the center of each of the plurality of substrate bars, and a coupling portion positioned at one side in the first direction with respect to one of the plurality of light sources mounted on each of the plurality of substrate bars. Each of the plurality of bar fixers may be disposed at the coupling portion formed on a corresponding respective substrate bar among the plurality of substrate bars.

[0014] The plurality of light sources mounted on each of the plurality of substrate bars may be spaced apart from the central extension portion in the first direction.

[0015] The plurality of light sources may include a plurality of first-side light sources arranged on one side in the first direction based on the central extension portion of each of the plurality of substrate bars, and a plurality of second-side light sources arranged on the other side in the first direction based on the central extension portion of each of the plurality of substrate bars. Each of the plurality of substrate bars may include a power supply line configured to supply power to the plurality of light sources. The power supply line may include a first power supply line arranged along positions where the plurality of first-side light sources are arranged, and a second power supply line arranged along positions where the plurality of second-side light sources are arranged. The coupling member may be arranged between the first power supply line and the second power supply line.

[0016] Each of the plurality of substrate bars may further include a first protrusion protruding in the first direction from one side of the central extension portion and on which some of the plurality of light sources are mounted, and a second protrusion protruding in the first direction from the other side of the central extension portion opposite to the one side and on which some and other of the plurality of light sources are mounted. The connecting portion may be arranged parallel to either the shortest portion of the first protrusion in the first direction or the shortest portion of the second protrusion in the first direction in the first direction.

[0017] The plurality of bar fixers may be arranged on the rear side of the plurality of substrate bars facing the bottom chassis.

[0018] Each of the plurality of bar fixers may include a fixed body that contacts a back surface opposite to the plurality of substrate bars of the bottom chassis.

[0019] The bottom chassis may include a plurality of chassis holes formed to be penetrated by the plurality of bar fixers. The rear surface of the bottom chassis may be in contact with the fixed body positioned at the rear side with respect to the plurality of chassis holes. The front surface of the bottom chassis may be in contact with one of the plurality of substrate bars positioned at the front side with respect to the plurality of chassis holes, on which the one bar fixer is provided.

[0020] The bottom chassis may further include a plurality of mounting portions on which the plurality of bar fixers are mounted. Each of the plurality of mounting portions may extend from one side of an edge of each of the plurality of chassis holes toward the inner side of each of the plurality of chassis holes.

[0021] Each of the plurality of bar fixers may further include an extension portion extending from the fixed body toward the plurality of substrate bars and configured to penetrate the plurality of chassis holes.

[0022] The bottom chassis may further include a plurality of mounting portions on which each of the plurality of bar fixers is mounted. Each of the plurality of fixed bodies and each of the plurality of extension portions may surround at least a portion of each of the plurality of mounting portions.

[0023] Each of the plurality of fixed bodies may include a cover portion configured to cover the rear surface of the bottom chassis, and an interference protrusion configured to protrude from the cover portion toward the rear surface of the bottom chassis and to interfere with the bottom chassis.

[0024] The above bottom chassis may further include a plurality of mounting portions on which the plurality of bar fixers are mounted. Each of the plurality of connecting portions may include a substrate hole formed at a position corresponding to a position of the plurality of mounting portions.

[0025] The plurality of bar fixers may be configured to slide in one direction and be mounted on the bottom chassis. Each of the plurality of bar fixers may include a fixed body that contacts the rear surface of the bottom chassis at a position where it is mounted on the bottom chassis, and an inclined guide that extends in a direction away from the rear surface of the bottom chassis as it moves in the one direction from the fixed body.

[0026] The display device may further include a substrate body to which the plurality of substrate bars are connected and supported by the bottom chassis, and a body fixer disposed on the substrate body and configured to fix the substrate body to the bottom chassis.

[0027] The above body fixer may include a plurality of body fixers. The number of the plurality of body fixers may be less than or equal to the number of the plurality of bar fixers.

[0028] According to one aspect of the present disclosure, a display device may include a display panel, a plurality of light sources configured to irradiate light toward the display panel, a light source substrate on which the plurality of light sources are mounted, a bottom chassis configured to support the light source substrate, and a plurality of board fixers configured to fix the light source substrate to the bottom chassis. The light source substrate may include a substrate body, and a plurality of substrate bars spaced apart from each other in a first direction and extending in a second direction different from the first direction from the substrate body. At least some of the plurality of board fixers may be arranged at a center of each of the plurality of board bars in the first direction, and arranged parallel to one of the plurality of light sources mounted on each of the plurality of board bars in the first direction, and configured to fix the plurality of board bars to the bottom chassis.

[0029] Each of the plurality of substrate fixers may include an extension portion extending from a back surface of the light source substrate facing the bottom chassis and configured to penetrate the bottom chassis, and a fixing body connected to the extension portion and in contact with a back surface of the bottom chassis opposite the light source substrate.

[0030] At least some of the plurality of substrate fixers may be positioned adjacent to an end of one of the plurality of substrate bars.

[0031] Among the plurality of substrate fixers, a substrate fixer other than at least some of the substrate fixers may be arranged on the substrate body and configured to secure the substrate body to the bottom chassis.

[0032] According to one aspect of the present disclosure, a display device may include a plurality of light sources, a plurality of substrate bars arranged along a first direction and having at least some of the plurality of light sources mounted thereon, a bottom chassis configured to support the plurality of substrate bars, and a plurality of bar fixers configured to fix the plurality of substrate bars to the bottom chassis. Each of the plurality of substrate bars may include a central extension portion extending along a second direction perpendicular to the first direction, a plurality of first protrusions protruding upward in the first direction from the central extension portion, and a plurality of second protrusions protruding downward in the first direction from the central extension portion. Each of the plurality of bar fixers may be arranged in parallel with either the plurality of first protrusions or the plurality of second protrusions on the central extension portion of each of the plurality of substrate bars in the first direction.

[0033] The above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings.

[0034] FIG. 1 is a diagram illustrating a display device according to one or more embodiments.

[0035] FIG. 2 is an exploded view of a display device according to one or more embodiments.

[0036] FIG. 3 is a cross-sectional view illustrating a liquid crystal panel of a display device according to one or more embodiments.

[0037] FIG. 4 is an enlarged view of a light source and a reflective sheet of a display device according to one or more embodiments.

[0038] FIG. 5 is a drawing illustrating a light source substrate and a bottom chassis of a display device according to one or more embodiments.

[0039] FIG. 6 is an enlarged view of a portion of a light source substrate and a bottom chassis of a display device according to one or more embodiments.

[0040] FIG. 7 is an enlarged view of a portion of a substrate bar and bottom chassis of a display device according to one or more embodiments.

[0041] FIG. 8 is a drawing illustrating a substrate bar and a bar fixer coupled thereto of a display device according to one or more embodiments.

[0042] FIG. 9 is a drawing illustrating a substrate bar and a bar fixer coupled thereto of a display device according to one or more embodiments.

[0043] FIG. 10 is a drawing illustrating a substrate bar and a bar fixer coupled thereto of a display device according to one or more embodiments.

[0044] FIG. 11 is a diagram illustrating a bar fixer of a display device according to one or more embodiments.

[0045] FIG. 12 is a drawing illustrating a mounting portion provided on a bottom chassis of a display device according to one or more embodiments.

[0046] FIG. 13 is a drawing illustrating a light source substrate of a display device according to one or more embodiments before being mounted on a bottom chassis.

[0047] FIG. 14 is a drawing illustrating a state in which a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis.

[0048] FIG. 15 is a drawing illustrating a light source substrate of a display device according to one or more embodiments before being mounted on a bottom chassis.

[0049] FIG. 16 is a drawing illustrating a state in which a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis.

[0050] FIG. 17 is a drawing illustrating a light source substrate of a display device according to one or more embodiments before being mounted on a bottom chassis.

[0051] FIG. 18 is a drawing illustrating a state in which a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis.

[0052] FIG. 19 is an enlarged view of a portion of a light source substrate and a bottom chassis of a display device according to one or more embodiments.

[0053] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0054] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0055] Additionally, the singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0056] Additionally, in this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0057] Additionally, the terms "part," "module," and "member" may be implemented in hardware or software. According to one or more embodiments, multiple "parts," "modules," and "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0058] In addition, the terminology used in this specification is used to describe various embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0059] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0060] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0061] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0062] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0063] Meanwhile, the terms "up-down direction", "front-back direction", etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the terms "front" and "rear" below may be defined based on the X direction shown in the drawings, respectively. The terms "upper" and "lower" below may be defined based on the Z direction shown in the drawings, respectively. The terms "left direction" and "right direction" below may be defined based on the Y direction shown in the drawings, respectively. The term "vertical direction" below may mean the Z direction shown in the drawings, respectively, and the term "horizontal direction" below may mean the Y direction shown in the drawings, respectively.

[0064] Hereinafter, various embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0065] FIG. 1 is a diagram illustrating a display device according to one or more embodiments.

[0066] Referring to FIG. 1, a display device (1) according to one or more embodiments is a device that processes an image signal received from the outside and can visually display the processed image. In FIG. 1, the display device (1) is exemplified as a television (TV), but is not limited thereto. The display device (1) can be implemented in various forms such as a monitor, which is a type of computer output device, a portable multimedia device, a portable communication device, etc., and the form of the display device (1) is not limited as long as it is a device that visually displays an image.

[0067] In addition, the display device (1) may be a large format display (LFD) installed outdoors, such as on a building rooftop or a bus stop. Here, the term "outdoor" is not necessarily limited to outdoors, and the display device (1) according to one or more embodiments may be installed in any indoor location where a large number of people may come and go, such as a subway station, shopping mall, movie theater, company, or store.

[0068] In Fig. 1, the display device (1) is described as a flat display device with a flat screen, but is not limited thereto, and the display device according to the concept of the present disclosure can also be applied to a curved display device or a bendable or flexible display device in which the flat state and the curved state can be changed. In addition, the configuration of the present disclosure can be applied to display devices of various shapes regardless of the screen size or ratio of the display device.

[0069] A display device (1) can receive content including video signals and audio signals from various content sources, and output video and audio corresponding to the video signals and audio signals. According to one or more embodiments, the display device (1) can receive content data via a broadcast reception antenna or a wired cable, receive content data from a content playback device, or receive content data from a content provider's content provision server.

[0070] A display device (1) can display an image corresponding to video data and output a sound corresponding to audio data. According to one or more embodiments, the display device (1) can restore a plurality of image frames included in the video data and continuously display the plurality of image frames. In addition, the display device (1) can restore an audio signal included in the audio data and continuously output a sound according to the audio signal.

[0071] As illustrated in FIG. 1, the display device (1) may include a main body (11) and a screen (12) that displays an image (I).

[0072] The display device (1) can be installed in a standing manner on an indoor or outdoor floor or furniture, or can be installed in a wall-mounted manner on a wall or inside a wall. The display device (1) can include one or more support legs (19) provided at the lower portion of the main body (11) so that it can be installed in a standing manner on an indoor or outdoor floor or furniture.

[0073] The main body (11) can form the outer shape of the display device (1). Parts for performing various functions, such as displaying an image (I) by the display device (1), can be provided inside the main body (11).

[0074] The display device (1) can be configured to display an image (I). Specifically, the screen (12) can be formed on the front of the main body (11), and the display device (1) can display the image (I) through the screen (12). The screen (12) can display a still image or a moving image. In addition, the screen (12) can display a two-dimensional flat image or a three-dimensional stereoscopic image using the parallax of the user's two eyes.

[0075] A plurality of pixels (P) can be formed on the screen (12). An image (I) displayed on the screen (12) can be formed by light emitted from each of the plurality of pixels (P). By combining the light emitted from the plurality of pixels (P) like a mosaic, an image (I) can be formed on the screen (12).

[0076] Each of the plurality of pixels (P) can emit light of different brightness and different colors. Specifically, each of the plurality of pixels (P) is divided into sub-pixels (P R , P G , P B ) may include sub-pixels (P R , P G , P B ) is a red sub-pixel (P) that can emit red light. R ), a green sub-pixel (P) capable of emitting green light G ) and blue sub-pixels (P) capable of emitting blue light. B ) can include. Red light can refer to light with a wavelength of approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, green light can refer to light with a wavelength of approximately 495 nm to 570 nm, and blue light can refer to light with a wavelength of approximately 450 nm to 495 nm.

[0077] Red subpixel (P R ), green subpixel (P G ) and blue subpixel (P B) Each of the plurality of pixels (P) can emit light of various brightness and color by combining the light emitted from each pixel.

[0078] FIG. 2 is an exploded view of a display device according to one or more embodiments.

[0079] Referring to FIG. 2, various components for generating an image (I) on a screen (12) may be provided inside a main body (11) of a display device (1) according to one or more embodiments.

[0080] According to one or more embodiments, the display device (1) may include a display panel (20). The display panel (20) may be provided on the main body (11). The display panel (20) may be provided to display an image (I). The screen (12) described in FIG. 1 may be formed on the front surface of the display panel (20).

[0081] According to one or more embodiments, the display panel (20) may have a substantially rectangular shape. Specifically, the display panel (20) may have a shape in which the lengths of the horizontal and vertical sides are different from each other. That is, the display panel (20) may be provided to have a long side and a short side. The display panel (20) may be provided in a rectangular plate shape. However, the present invention is not limited thereto, and the display panel (20) may also be provided in a square plate shape in which the lengths of the long sides and the short sides are substantially equal.

[0082] The display panel (20) can be provided in various sizes. The ratio of the long side to the short side of the display panel (20) is not limited to general cases such as 16:9 or 4:3, but can be provided in any arbitrary ratio.

[0083] In a display device (1) according to one or more embodiments, the display panel (20) may be configured as a panel of a light-emitting display type such as a liquid crystal display (LCD).

[0084] On one side of the display panel (20), a cable (20a) for transmitting image data to the display panel (20) and a display driver integrated circuit (DDI) (30) (hereinafter referred to as a 'driver IC') for processing digital image data and outputting an analog image signal may be provided.

[0085] The cable (20a) can electrically connect between the control assembly (50) and / or the power assembly (60) and the driver IC (30), and can also electrically connect between the driver IC (30) and the display panel (20). The cable (20a) can include a flexible flat cable or a film cable that can be bent.

[0086] The driver IC (30) can receive image data and power from the control assembly (50) / power assembly (60) through the cable (20a), and transmit image data and driving current to the display panel (20) through the cable (20a).

[0087] In addition, the cable (20a) and the driver IC (30) may be implemented as a single unit, such as a film cable, a chip on film (COF), a tape carrier packet (TCP), etc. In other words, the driver IC (30) may be placed on the cable (20a). However, this is not limited thereto, and the driver IC (30) may be placed on the display panel (20).

[0088] A detailed description of the structure of the display panel (20) will be described later.

[0089] The display device (1) may include a backlight unit (100) configured to irradiate light toward the display panel (20). The backlight unit (100) may be provided in the main body (11). The backlight unit (100) may be arranged at the rear of the display panel (20) and configured to irradiate light toward the front where the display panel (20) is located. Specifically, the backlight unit (100) may be configured as a surface light source. The display panel (20) may block or allow light emitted from the backlight unit (100) to pass through.

[0090] The backlight unit (100) may include a point light source that emits monochromatic light or white light, and may be configured to refract, reflect, and scatter light to convert light emitted from the point light source into uniform surface light. The backlight unit (100) may emit uniform surface light toward the front by refracting, reflecting, and scattering light emitted from the point light source.

[0091] As illustrated in FIG. 2, the backlight unit (100) may include a light source module (1000). The light source module (1000) may generate and emit light. Specifically, the light source module (1000) may be configured to emit monochromatic light or white light.

[0092] The light source module (1000) may include a plurality of light sources (1100) arranged to irradiate light and a light source substrate (1200) on which the plurality of light sources (1100) are mounted (see FIG. 4, etc.).

[0093] A detailed description of the light source module (1000) will be described later.

[0094] As illustrated in FIG. 2, the backlight unit (100) may include a reflective sheet (120) configured to reflect light. The reflective sheet (120) may reflect light forward or in a direction close to the forward direction.

[0095] According to one or more embodiments, the reflective sheet (120) may be attached to the front surface of the light source module (1000). Specifically, the reflective sheet (120) may be attached to the front surface of the light source substrate (1200).

[0096] According to one or more embodiments, the light source module (1000) (specifically, the light source (1100) of the light source module (1000), see FIG. 4) can emit light in various directions in front of the reflective sheet (120). The light emitted from the light source module (1000) can be emitted toward the diffuser plate (130) described below, as well as emitted from the light source module (1000) toward the reflective sheet (120), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffuser plate (130).

[0097] Alternatively, when light emitted from a light source module (1000) passes through various objects such as a diffuser plate (130) and an optical sheet (140), some of it may be reflected from the surface of the diffuser plate (130) and the optical sheet (140), and the reflective sheet (120) may reflect the reflected light forward again for this reason.

[0098] As illustrated in FIG. 2, the backlight unit (100) may include a diffuser plate (130) configured to uniformly diffuse light. The diffuser plate (130) may be provided in front of the light source module (1000) and the reflective sheet (120). The diffuser plate (130) may evenly disperse light emitted from the light source module (1000) and then emit the light forward.

[0099] As illustrated in FIG. 2, the backlight unit (100) may include an optical sheet (140) that is provided to further improve the luminance and uniformity of the luminance of the emitted light. The optical sheet (140) may be provided to refract and scatter light emitted from the front surface of the diffusion plate (130). According to one or more embodiments, the optical sheet (140) may include various types of sheets, such as a diffusion sheet, a prism sheet, a reflective polarizing sheet, and a quantum dot sheet.

[0100] The display device (1) may include a control assembly (50) that controls the operation of the backlight unit (100) and the display panel (20), and a power assembly (60) that supplies power to the backlight unit (100) and the display panel (20). The control assembly (50) and the power assembly (60) may be provided in the main body (11).

[0101] According to one or more embodiments, the control assembly (50) may include a control circuit that controls the operation of the display panel (20) and the backlight unit (100). The control circuit may process image data received from an external content source, transmit the image data to the display panel (20), and transmit dimming data to the backlight unit (100).

[0102] According to one or more embodiments, the power assembly (60) can supply power to the display panel (20) and the backlight unit (100) such that the backlight unit (100) outputs surface light and the display panel (20) blocks or passes light from the backlight unit (100).

[0103] The control assembly (50) and the power assembly (60) may be implemented as a printed circuit board and various circuits mounted on the printed circuit board. According to one or more embodiments, the power circuit may include capacitors, coils, resistors, processors, etc., and a power circuit board on which these are mounted. In addition, the control circuit may include memory, a processor, and a control circuit board on which these are mounted.

[0104] The display device (1) may include a display case that is provided to support various components of the main body (11) of the display device (1). In other words, various components of the main body (11) may be accommodated inside the display case. The display case may form the outer shape of the display device (1).

[0105] According to one or more embodiments, the display case may support a display panel (20). According to one or more embodiments, the display case may support a backlight unit (100). According to one or more embodiments, the display case may support a control assembly (50). According to one or more embodiments, the display case may support a power assembly (60).

[0106] According to one or more embodiments, the display device (1) may include a top chassis (13). The top chassis (13) may include a top chassis (13) that supports the front or side of the display panel (20). According to one or more embodiments, the top chassis (13) may be provided in the shape of a roughly rectangular frame.

[0107] The top chassis (13) may form a bezel that is positioned to face the front of the display device (1) and support the front of the display panel (20). However, if the display device (1) is a bezel-less type display device with a very narrow or no bezel, the top chassis (13) may be provided to support only the side of the display panel (20). Alternatively, if the bottom chassis (15) supports the side of the display panel (20), the display device (1) may not include the top chassis (13).

[0108] According to one or more embodiments, the display device (1) may include a bottom chassis (15). The bottom chassis (15) may cover the rear of the display panel (20). The bottom chassis (15) may be coupled to the rear of the top chassis (13). The bottom chassis (15) may support various components of the display device (1), such as a backlight unit (100), a control assembly (50), and a power assembly (60).

[0109] The bottom chassis (15) may be formed to have a roughly flat plate shape, but is not limited thereto. The bottom chassis (15) may be formed of a material with high thermal conductivity to dissipate heat generated from the light source to the outside. According to one or more embodiments, the bottom chassis (15) may be formed of a metal material such as aluminum or SUS, or a plastic material such as ABS.

[0110] According to one or more embodiments, the display device (1) may include a middle mold (14). The middle mold (14) may be disposed between the top chassis (13) and the bottom chassis (15). According to one or more embodiments, the middle mold (14) may support at least some components of the backlight unit (100).

[0111] According to one or more embodiments, the display device (1) may include a rear cover (16). The rear cover (16) is disposed at the rear of the bottom chassis (15) and may cover the bottom chassis (15) and various components mounted at the rear of the bottom chassis (15) (e.g., a control assembly (50), a power assembly (60), etc.).

[0112] Meanwhile, unlike as illustrated in FIG. 2, the display case of the display device (1) according to one or more embodiments may not include some of the components of the top chassis, middle mold, bottom chassis, and rear cover.

[0113] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example of one or more embodiments for describing the display device, and the spirit of the present disclosure is not limited thereto. A display device according to the spirit of the present disclosure may be provided to include various configurations for performing the function of providing images through a screen.

[0114] FIG. 3 is a cross-sectional view illustrating a liquid crystal panel of a display device according to one or more embodiments.

[0115] Referring to FIG. 3, a display panel (20) included in a display device (1) according to one or more embodiments may be configured as a liquid crystal display (LCD) panel and may be arranged to block or allow light emitted from a backlight unit (100) to pass through. By the operation of the display panel (20) blocking or allowing light emitted from the backlight unit (100) to pass through, an image (I) may be formed in front of the display panel (20).

[0116] The front surface of the display panel (20) can form the screen (12) of the display device (1) described above. A plurality of pixels (P) can be provided on the display panel (20). The plurality of pixels (P) provided on the display panel (20) can independently block or transmit light from the backlight unit (100), and the light transmitted by the plurality of pixels (P) can form an image (I) displayed on the screen (12).

[0117] According to one or more embodiments, as illustrated in FIG. 3, the display panel (20) may include a first polarizing film (21), a first transparent substrate (22), a pixel electrode (23), a thin film transistor (24), a liquid crystal layer (25), a common electrode (26), a color filter (27), a second transparent substrate (28), and a second polarizing film (29).

[0118] The first transparent substrate (22) and the second transparent substrate (28) can fix and support a pixel electrode (23), a thin film transistor (24), a liquid crystal layer (25), a common electrode (26), and a color filter (27). The first and second transparent substrates (22, 28) can be made of reinforced glass or transparent resin.

[0119] A first polarizing film (21) and a second polarizing film (29) may be provided on the outer side of the first and second transparent substrates (22, 28).

[0120] The first polarizing film (21) and the second polarizing film (29) can each transmit specific light and block other light. According to one or more embodiments, the first polarizing film (21) transmits light having a magnetic field vibrating in a first direction and blocks other light. In addition, the second polarizing film (29) transmits light having a magnetic field vibrating in a second direction and blocks other light. At this time, the first direction and the second direction can be orthogonal to each other. Accordingly, the polarization direction of the light transmitted by the first polarizing film (21) and the vibration direction of the light transmitted by the second polarizing film (29) can be orthogonal to each other. As a result, light generally cannot simultaneously transmit through the first polarizing film (21) and the second polarizing film (29).

[0121] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0122] The color filter (27) may include, for example, a red filter (27R) that passes red light, a green filter (27G) that passes green light, and a blue filter (27G) that passes blue light, and the red filter (27R), the green filter (27G), and the blue filter (27B) may be arranged parallel to each other. The area where the color filter (27) is formed may correspond to the pixel (P) described above. The area where the red filter (27R) is formed may correspond to the red sub-pixel (P). R ) corresponds to the green sub-pixel (P), and the area where the green filter (27G) is formed is the green sub-pixel (P G ) corresponds to the blue sub-pixel (P), and the area where the blue filter (27B) is formed is a blue sub-pixel (P B ) can be corresponded to.

[0123] A pixel electrode (23) may be provided on the inner side of the first transparent substrate (22), and a common electrode (26) may be provided on the inner side of the second transparent substrate (28).

[0124] The pixel electrode (23) and the common electrode (26) are made of a metal material that conducts electricity, and can generate an electric field to change the arrangement of liquid crystal molecules (25a) that constitute the liquid crystal layer (25) to be described below.

[0125] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can transmit light incident from the outside. According to one or more embodiments, the pixel electrode (23) and the common electrode (26) may be made of indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowire, carbon nanotube (CNT), graphene, or PEDOT (3,4-ethylenedioxythiophene). A thin film transistor (TFT) (24) may be provided on the inside of the second transparent substrate (28).

[0126] The thin film transistor (24) can pass or block current flowing through the pixel electrode (23). According to one or more embodiments, an electric field can be formed or removed between the pixel electrode (23) and the common electrode (26) depending on whether the thin film transistor (24) is turned on (closed) or turned off (opened).

[0127] The thin film transistor (24) can be composed of polysilicon and can be formed by a semiconductor process such as lithography, deposition, or ion implantation.

[0128] A liquid crystal layer (25) may be formed between the pixel electrode (23) and the common electrode (26). The liquid crystal layer (25) may be filled with liquid crystal molecules (25a).

[0129] Liquid crystals exhibit a state intermediate between that of a solid (crystal) and a liquid. Most liquid crystal substances are organic compounds, and their molecular structure is elongated and rod-shaped. While the arrangement of these molecules resembles an irregular state in some directions, they can form regular crystals in other directions. As a result, liquid crystals can exhibit both the fluidity of a liquid and the optical anisotropy of a crystal (solid).

[0130] In addition, liquid crystals can exhibit optical properties depending on changes in the electric field. In liquid crystals, the direction of the arrangement of molecules constituting the liquid crystal can change depending on changes in the electric field. When an electric field is generated in the liquid crystal layer (25), the liquid crystal molecules (25a) of the liquid crystal layer (25) can be arranged according to the direction of the electric field. When an electric field is not generated in the liquid crystal layer (25), the liquid crystal molecules (25a) can be arranged irregularly or along the alignment layer. As a result, the optical properties of the liquid crystal layer (25) can vary depending on the presence or absence of an electric field passing through the liquid crystal layer (25).

[0131] The structure of the display panel (20) described above with reference to FIG. 3 is merely an example of a structure that a display panel of a display device according to one or more embodiments of the present disclosure may have, and the spirit of the present disclosure is not limited thereto.

[0132] FIG. 4 is an enlarged view of a light source and a reflective sheet of a display device according to one or more embodiments.

[0133] Referring to FIG. 4, a display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (1100) and a light source substrate (1200) on which the light sources (1100) are mounted. The plurality of light sources (1100) and the light source substrate (1200) may constitute a light source module (1000) of a backlight unit (100).

[0134] In FIG. 4, one light source (1100) among a plurality of light sources (1100) included in a light source module (1000) is illustrated in detail, and the description of the structure and function of the light source (1100) described below with reference to FIG. 4 can be commonly applied to each of the plurality of light sources (1100).

[0135] The light source (1100) may be configured to irradiate light. The light source (1100) may be configured to irradiate light toward the display panel (20). The light source (1100) may employ a device that, when supplied with power, can emit monochromatic light (light of a specific wavelength, for example, blue light) or white light (for example, light mixed with red light, green light, and blue light) in various directions. The light source (1100) may include a light emitting diode (LED).

[0136] The light source substrate (1200) can fix a plurality of light sources (1100) so that the positions of the light sources (1100) do not change. In addition, the light source substrate (1200) can supply power to each light source (1100) for emitting light.

[0137] The light source substrate (1200) may be made of synthetic resin, reinforced glass, or a printed circuit board (PCB) that fixes a plurality of light sources (1100) and has conductive power supply lines formed thereon to supply power to the light sources (1100).

[0138] The light source (1100) may be provided on the front surface of the light source substrate (1200). The front surface of the light source substrate (1200) as referred to here may refer to a side of the light source substrate (1200) facing the display panel (20). That is, the light source (1100) may be mounted on the light source substrate (1200) so as to face forward and be provided to irradiate light forward.

[0139] The reflective sheet (120) may be arranged in front of the light source substrate (1200). As described above, the reflective sheet (120) may be coupled to the front surface of the light source substrate (1200). At this time, the reflective sheet (120) may include a plurality of through holes (120a) formed at positions corresponding to each of the plurality of light sources (1100) of the light source module (1000). As illustrated in FIG. 4, the light source (1100) may pass through the through holes (120a) and protrude toward the front of the reflective sheet (120). As a result, a portion of the light source (1100) and the light source substrate (1200) may be exposed toward the front of the reflective sheet (120) through the through holes (120a). With this configuration, the light source (1100) may emit light from the front of the reflective sheet (120).

[0140] The reflective sheet (120) can reflect light emitted from the light source (1100) toward the reflective sheet (120) toward the diffuser plate (130).

[0141] The process in which light emitted by multiple light sources (1100) or reflected by a reflective sheet (120) travels toward the display panel (20) is as described above.

[0142] Below, the detailed structure of the light source (1100) and the light source substrate (1200) is described as an example.

[0143] The light source (1100) may include a light emitting diode (1101). The light emitting diode (1101) may include a P-type semiconductor and an N-type semiconductor for emitting light by recombination of holes and electrons. In addition, the light emitting diode (1101) may be provided with a pair of electrodes for supplying holes and electrons to the P-type semiconductor and the N-type semiconductor, respectively.

[0144] The light emitting diode (1101) can be configured to convert electrical energy into light energy. The light emitting diode (1101) can emit light having a maximum intensity at a predetermined wavelength based on the power supplied. According to one or more embodiments, the light emitting diode (1101) can emit blue light having a peak value at a wavelength representing a blue color (e.g., a wavelength between 430 nm and 495 nm).

[0145] According to one or more embodiments, a multilayer reflective structure may be provided on the front surface of a light emitting diode (1101) in which a plurality of insulating films having different refractive indices are alternately laminated. This multilayer reflective structure may be configured as a distributed Bragg reflector (DBR).

[0146] According to one or more embodiments, the light emitting diode (1101) may be directly attached to the light source substrate (1200) in a Chip On Board (COB) manner. In other words, the light source (1100) may include a light emitting diode (1101) in which a light emitting diode chip or light emitting diode die is directly attached to the light source substrate (1200) without separate packaging.

[0147] The light source module (1000) can realize miniaturization of the light source (1100) by manufacturing a flip-chip type light emitting diode (1101) attached to a light source substrate (1200) in a chip-on-board manner.

[0148] The light source substrate (1200) may include a power supply line (1230) configured to supply power to the light source (1100). The power supply line (1230) may be configured to supply electrical signals and / or power from a control assembly (50) and / or a power assembly (60) to the light source (1100). According to one or more embodiments, the power supply line (1230) may be configured to supply power to a flip-chip type light emitting diode (1101).

[0149] According to one or more embodiments, the light source substrate (1200) may be formed by alternately stacking a non-conductive insulation layer and a conductive conduction layer.

[0150] A conductive layer of the light source substrate (1200) may be formed with lines or patterns through which power and / or electrical signals pass. The conductive layer may be composed of various electrically conductive materials. For example, the conductive layer may be composed of various metallic materials such as copper (Cu), tin (Sn), aluminum (Al), or alloys thereof. The power supply line (1230) may be implemented by a line or pattern formed on the conductive layer of the light source substrate (1200).

[0151] The dielectric of the insulating layer of the light source substrate (1200) can insulate between the lines or patterns of the conductive layer. The insulating layer can be composed of a dielectric for electrical insulation, for example, a multipurpose glass epoxy laminate (FR-4) having flame retardancy.

[0152] According to one or more embodiments, a protection layer may be provided on the outer surface of the light source substrate (1200) to prevent or suppress damage to the light source substrate (1200) due to external impact, damage due to chemical action (e.g., corrosion, etc.), and / or damage due to optical action. According to one or more embodiments, the protection layer of the light source substrate (1200) may include a photo solder resist (PSR).

[0153] The power supply line (1230) can be covered by a protective layer of the light source substrate (1200) to prevent it from being exposed to the outside.

[0154] According to one or more embodiments, the light source substrate (1200) may include a power supply pad (1240) electrically connected to a power supply line (1230) to supply power to a flip-chip type light emitting diode (1101). The power supply line (1230) may be electrically connected to the light emitting diode (1101) via the power supply pad (1240).

[0155] According to one or more embodiments, a window may be formed in the protective layer of the light source substrate (1200) to allow a portion of the power supply line (1230) to be exposed to the outside. The power supply pad (1240) may be electrically connected to a portion of the power supply line (1230) exposed to the outside of the light source substrate (1200).

[0156] According to one or more embodiments, various conductive adhesive materials having electrical conductivity, such as solder or electrically conductive epoxy adhesives, may be applied between the electrode of the light emitting diode (1101) and the power supply pad (1240).

[0157] The light source (1100) may include an optical dome (1102). The optical dome (1102) may cover a light emitting diode (1101). The optical dome (1102) may prevent or suppress damage to the light emitting diode (1101) due to external mechanical action and / or damage to the light emitting diode (1101) due to chemical action.

[0158] The optical dome (1102) may have, for example, a dome shape obtained by cutting a sphere with a plane that does not include its center, or a hemispherical shape obtained by cutting a sphere with a plane that includes its center. The vertical cross-section of the optical dome (1102) may be, for example, a segment or a semicircle.

[0159] The optical dome (1102) may be composed of silicone or epoxy resin. According to one or more embodiments, molten silicone or epoxy resin may be ejected onto the light-emitting diode (1101) through a nozzle or the like, and the ejected silicone or epoxy resin may then be cured, thereby forming the optical dome (1102).

[0160] The optical dome (1102) may be optically transparent or translucent. Light emitted from the light emitting diode (1101) may pass through the optical dome (1102) and be emitted to the outside.

[0161] At this time, the dome-shaped optical dome (1102) can refract light like a lens. According to one or more embodiments, light emitted from the light-emitting diode (1101) can be dispersed by being refracted by the optical dome (1102).

[0162] The structure of the light source module (1000), such as the light source (1100) and the light source substrate (1200), described above with reference to FIG. 4 is merely an example of a structure that a light source module of a display device according to one or more embodiments of the present disclosure may have, and the spirit of the present disclosure is not limited thereto.

[0163] FIG. 5 is a drawing illustrating a light source substrate and a bottom chassis of a display device according to one or more embodiments.

[0164] Referring to FIG. 5, a display device (1) according to one or more embodiments may include a plurality of light source modules (1000).

[0165] A plurality of light source modules (1000) may be arranged in front (+X direction) of the bottom chassis (15). According to one or more embodiments, the plurality of light source modules (1000) may each be mounted on the bottom chassis (15). That is, the plurality of light source modules (1000) may each be fixed to the bottom chassis (15) and supported by the bottom chassis (15).

[0166] In detail, a plurality of light source modules (1000) can be fixed to the bottom chassis (15) as each light source substrate (1200) is fixed to the bottom chassis (15). A detailed description of the structure that allows the light source substrate (1200) to be fixed to the bottom chassis (15) will be described later.

[0167] According to one or more embodiments, the plurality of light source modules (1000) may be formed in shapes corresponding to each other. In other words, each of the plurality of light source modules (1000) may have approximately the same structure.

[0168] According to one or more embodiments, as illustrated in FIG. 5, a light source module (1000A) positioned on the right side (+Y direction side) of the display device (1) among the plurality of light source modules (1000) and a light source module (1000B) positioned on the left side (-Y direction side) of the display device (1) among the plurality of light source modules (1000) may be arranged so that their vertical and horizontal directions are opposite to each other (i.e., so as to be positioned in a state where they are rotated 180 degrees relative to the X axis). According to this arrangement, the plurality of light source modules (1000) may be arranged so as to be symmetrical left and right with respect to the horizontal direction center of the display device (1), and luminance on both sides with respect to the horizontal direction center of the display device (1) may be uniformly provided.

[0169] As the plurality of light source modules (1000) are designed to have almost identical shapes, waste of parts can be prevented and the efficiency of the manufacturing process can be improved, thereby reducing the manufacturing cost.

[0170] However, this is not limited thereto, and at least some of the plurality of light source modules (1000) may be formed to have different shapes.

[0171] Although FIG. 5 illustrates one or more embodiments in which the display device (1) includes eight light source modules (1000), the number of light source modules (1000) included in the display device (1) is not limited to that illustrated in FIG. 5. According to one or more embodiments, the number of light source modules (1000) included in the display device (1) may be greater or less than the number illustrated in FIG. 5. Alternatively, for example, the display device (1) may include only one integrally formed light source module (1000).

[0172] Below, the structure of one light source module (1000) among the plurality of light source modules (1000) will be described in detail. According to one or more embodiments, the structure of one light source module (1000) described below can be applied to each of the plurality of light source modules (1000).

[0173] FIG. 6 is an enlarged view of a portion of a light source substrate and a bottom chassis of a display device according to one or more embodiments.

[0174] Referring to FIG. 6, a light source module (1000) of a display device (1) according to one or more embodiments may include a plurality of substrate bars (1220).

[0175] The substrate bar (1220) may be a configuration that forms at least a portion of the light source substrate (1200) described above and may include a printed circuit board having a shape extending in one direction.

[0176] At least a portion of a plurality of light sources (1100) may be mounted on each of the plurality of substrate bars (1220). At least a portion of the plurality of light sources (1100) may be mounted on the front surface of the plurality of substrate bars (1220). Here, the front surface of the plurality of substrate bars (1220) means one surface of the plurality of substrate bars (1220) facing the display panel (20).

[0177] A plurality of substrate bars (1220) may be composed of a printed circuit board on which a light source (1100) is mounted and the aforementioned power supply line (1230) is provided.

[0178] A plurality of substrate bars (1220) may be arranged to be spaced apart from each other. The plurality of substrate bars (1220) may be arranged to be spaced apart from each other along a first direction (Z). The first direction (Z) in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other may be approximately parallel to the vertical direction (i.e., the up-down direction) of the display device (1). The plurality of substrate bars (1220) may be arranged to be parallel at positions spaced apart from each other.

[0179] Each of the plurality of substrate bars (1220) may be formed to have a general bar shape. Specifically, each of the plurality of substrate bars (1220) may have a width in a first direction (Z) and may extend in a second direction (Y) different from the first direction (Z). That is, each of the plurality of substrate bars (1220) may have a shape in which the length in the second direction (Y) is longer than the width in the first direction (Z).

[0180] According to one or more embodiments, the width direction of each of the plurality of substrate bars (1220) may be approximately parallel to the vertical direction (i.e., up-down direction) of the display device (1). According to one or more embodiments, the direction in which each of the plurality of substrate bars (1220) extends may be approximately parallel to the horizontal direction (i.e., left-right direction) of the display device (1).

[0181] According to one or more embodiments, the direction in which each of the plurality of substrate bars (1220) extends may be parallel to the long side direction of the display device (1). According to one or more embodiments, the width direction of each of the plurality of substrate bars (1220) may be parallel to the short side direction of the display device (1).

[0182] According to one or more embodiments, the direction in which the plurality of substrate bars (1220) are spaced apart from each other may be parallel to each other's width direction. In other words, the plurality of substrate bars (1220) may be spaced apart from each other along the first direction (Z), which is each width direction.

[0183] Each of the plurality of substrate bars (1220) may extend in a direction different from the direction in which the plurality of substrate bars (1220) are spaced apart from each other. Specifically, each of the plurality of substrate bars (1220) may extend in a direction (Y direction) orthogonal to the direction in which the plurality of substrate bars (1220) are spaced apart from each other (Z direction). That is, the first direction and the second direction described above may be directions orthogonal to each other.

[0184] In contrast, the direction in which the plurality of substrate bars (1220) are arranged spaced apart from each other and the direction in which each of the plurality of substrate bars (1220) extends have a predetermined angle with each other, but the angle may not be exactly perpendicular.

[0185] According to one or more embodiments, the plurality of substrate bars (1220) may be arranged so that the distances spaced apart from each other in the first direction (Z) are uniform. In other words, the distances between adjacent pairs of substrate bars (1220) among the plurality of substrate bars (1220) in the first direction (Z) may all be approximately the same. As a result, the uniformity of the luminance of the display device (1) may be improved.

[0186] According to one or more embodiments, the plurality of substrate bars (1220) may be formed to have corresponding shapes. According to one or more embodiments, the plurality of substrate bars (1220) may have corresponding widths in the first direction (Z direction). According to one or more embodiments, the plurality of substrate bars (1220) may have corresponding lengths extending in the second direction (Y direction). According to one or more embodiments, the plurality of substrate bars (1220) may be formed to have corresponding sizes.

[0187] A reflective sheet (120) may be attached to the front surface of each of the plurality of substrate bars (1220).

[0188] Each of the plurality of substrate bars (1220) can be mounted on the bottom chassis (15). As each of the plurality of substrate bars (1220) is mounted on the bottom chassis (15) and maintains a fixed position, the plurality of light sources (1100) mounted on the plurality of substrate bars (1220) can be stably positioned at their respective designed positions.

[0189] A detailed description of the structure that allows each of the plurality of substrate bars (1220) to be fixed to the bottom chassis (15) will be described later.

[0190] The light source module (1000) of the display device (1) may include a substrate body (1210). The substrate body (1210) may be a configuration that forms a portion of the light source substrate (1200) described above and may include a printed circuit board.

[0191] A plurality of substrate bars (1220) may be connected to a substrate body (1210). The plurality of substrate bars (1220) may be supported by the substrate body (1210). According to one or more embodiments, the plurality of substrate bars (1220) may be connected to one side of the substrate body (1210).

[0192] A plurality of substrate bars (1220) may extend from the substrate body (1210). According to one or more embodiments, each of the plurality of substrate bars (1220) may extend from the substrate body (1210) in a second direction (Y). According to one or more embodiments, each of the plurality of substrate bars (1220) may extend from one side of the substrate body (1210) in the second direction (Y).

[0193] According to one or more embodiments, the substrate body (1210) may extend along the first direction (Z). According to one or more embodiments, the substrate body (1210) may have a shape in which a length in the first direction (Z) is longer than a width in the second direction (Y). In this case, the substrate body (1210) may have a structure in which a greater number of substrate bars (1220) are connected as the substrate body (1210) extends along a direction in which the plurality of substrate bars (1220) are arranged. Furthermore, in this case, the plurality of substrate bars (1220) may have a shape in which each of the substrate bars (1220) extends longer as it extends from one side in the second direction (Y), which is the width direction of the substrate body (1210) (i.e., the direction in which the length is relatively short).

[0194] According to one or more embodiments, some of the plurality of light sources (1100) may be mounted on the substrate body (1210). Some of the plurality of light sources (1100) may be mounted on the front surface of the substrate body (1210). Here, the front surface of the substrate body (1210) means one surface of the substrate body (1210) facing the display panel (20).

[0195] The substrate body (1210) may be composed of a printed circuit board on which a light source (1100) is mounted and the aforementioned power supply line (1230) is provided.

[0196] A reflective sheet (120) may be attached to the front surface of the substrate body (1210). According to one or more embodiments, an integral reflective sheet (120) may be attached to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220). In this case, the uniformity of brightness due to light reflected by the reflective sheet (120) may be improved, and the process of attaching the reflective sheet (120) to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220) may be simplified. However, the present invention is not limited thereto, and a plurality of reflective sheets (120) that are distinct from each other may be attached to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220).

[0197] The substrate body (1210) can be mounted on the bottom chassis (15). As the substrate body (1210) is mounted on the bottom chassis (15) and maintains a fixed position, a plurality of light sources (1100) mounted on the substrate body (1210) can be stably positioned at their respective designed positions. In addition, as the substrate body (1210) is mounted on the bottom chassis (15), a plurality of substrate bars (1220) connected to the substrate body (1210) can be more stably supported by the substrate body (1210).

[0198] A detailed description of the structure that allows the substrate body (1210) to be fixed to the bottom chassis (15) will be described later.

[0199] The display device (1) may include a connector (1300). The connector (1300) may be electrically connected to a plurality of light sources (1100). The connector (1300) may be electrically connected to a light source substrate (1200). The connector (1300) may be electrically connected to various electronic components mounted on the light source substrate (1200), such as a plurality of light sources (1100), along a power supply line (1230) provided on the light source substrate (1200). Accordingly, the connector (1300) may transmit an electrical signal transmitted from the control assembly (50) to various electronic components mounted on the light source substrate (1200), such as a plurality of light sources (1100), and may transmit power supplied from the power assembly (60) to various electronic components mounted on the light source substrate (1200), such as a plurality of light sources (1100). In other words, the light source module (1000) can be electrically connected to the control assembly (50) and / or the power assembly (60) via the connector (1300).

[0200] According to one or more embodiments, the connector (1300) may be mounted on the substrate body (1210). Specifically, the connector (1300) may be mounted on the back surface of the substrate body (1210) facing the bottom chassis (15).

[0201] As described above, since a reflective sheet (120) may be attached to the front surface of the substrate body (1210), if the connector (1300) is mounted on the front surface of the substrate body (1210), a portion of the reflective sheet (120) at a position corresponding to the mounting position of the connector (1300) may interfere with the connector (1300), thereby deteriorating the uniformity of the brightness of the display device (1). In contrast, in one or more embodiments of the present disclosure, it is possible to prevent the uniformity of the brightness of the display device (1) from being deteriorated when the connector (1300) is mounted on the back surface of the substrate body (1210).

[0202] According to one or more embodiments, the substrate body (1210) and the plurality of substrate bars (1220) may be formed integrally with each other. In other words, the substrate body (1210) and the plurality of substrate bars (1220) may be connected to each other to form an integral light source substrate (1200). The light source substrate (1200) may be formed as an integral printed circuit board including the substrate body (1210) and the plurality of substrate bars (1220). However, alternatively, the substrate body (1210) and the plurality of substrate bars (1220) may be connected to each other through a process of assembling them as separate components that are not formed integrally with each other.

[0203] The structure of the light source module (1000), such as the substrate body (1210) and the substrate bar (1220) described above with reference to FIG. 6, is merely an example of one or more embodiments, and the spirit of the present disclosure is not limited thereto.

[0204] In FIG. 6, an embodiment is illustrated in which each of the plurality of substrate bars (1220) extends in the right direction (+Y direction) from the substrate body (1210), but is not limited thereto. According to one or more embodiments, the plurality of substrate bars (1220) may also extend in the left direction (-Y direction) from the substrate body (1210).

[0205] Additionally, although FIG. 6 illustrates an embodiment in which the substrate body (1210) extends in the vertical direction (Z direction) of the display device (1), the present invention is not limited thereto. According to one or more embodiments, the substrate body (1210) may also extend in the horizontal direction (Y direction).

[0206] In addition, although FIG. 6 illustrates one or more embodiments in which each of the plurality of substrate bars (1220) extends in the horizontal direction (Y direction) from one side of the substrate body (1210) in the horizontal direction (Y direction), the present invention is not limited thereto, and for example, each of the plurality of substrate bars (1220) may extend in the vertical direction (Z direction) from one side of the substrate body (1210) in the vertical direction (Z direction). In this case, the plurality of substrate bars (1220) may be arranged to be spaced apart from each other in the horizontal direction (Y direction).

[0207] In addition, unlike what has been described above, the first direction, which is the width direction of each of the plurality of substrate bars (1220), or the first direction in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other, or the first direction in which the substrate body (1210) extends, or the second direction in which each of the plurality of substrate bars (1220) extends, may not be parallel to either the vertical direction (Z direction) or the horizontal direction (Y direction) of the display device (1).

[0208] However, for convenience of explanation, the following description is based on one or more embodiments in which the first direction is parallel to the vertical direction (Z direction) of the display device (1) and the second direction is parallel to the horizontal direction (Y direction) of the display device (1).

[0209] Referring to FIGS. 7 to 19, in a display device (1) according to one or more embodiments, a light source substrate (1200) may be mounted on a bottom chassis (15). Specifically, the display device (1) may include a board fixer (200, see FIG. 8, etc.), and the board fixer (200) may be provided to fix the light source substrate (1200) to the bottom chassis (15). That is, the light source substrate (1200) may be mounted on the bottom chassis (15) via the board fixer (200).

[0210] The substrate fixer (200) may be composed of various types of members having a structure capable of fixing the light source substrate (1200) to the bottom chassis (15). Specifically, the substrate fixer (200) may be composed of various types of members having a structure capable of being mounted on the bottom chassis (15) while being coupled to the light source substrate (1200).

[0211] Hereinafter, with reference to FIGS. 7 to 19, a structure in which a light source substrate (1200) is mounted and fixed to a bottom chassis (15) by a substrate fixer (200) in a display device (1) according to one or more embodiments of the present disclosure will be described in detail.

[0212] FIG. 7 is an enlarged view of a portion of a substrate bar and bottom chassis of a display device according to one or more embodiments.

[0213] Referring to FIG. 7, a plurality of substrate bars (1220) included in a display device (1) according to one or more embodiments may be mounted on a bottom chassis (15). The plurality of substrate bars (1220) may be positioned in front of the bottom chassis (15). The plurality of substrate bars (1220) may each be fixed to the bottom chassis (15).

[0214] The display device (1) may include a bar fixer (201, see FIG. 8, etc.). The bar fixer (201) may be provided to fix a substrate bar (1220) to a bottom chassis (15). A plurality of bar fixers (201) may be provided, and the plurality of bar fixers (201) may be provided to fix a plurality of substrate bars (1220) to the bottom chassis (15). The plurality of bar fixers (201) may be provided to fix a plurality of substrate bars (1220) to the bottom chassis (15) so that the plurality of substrate bars (1220) are attached to the bottom chassis (15) and cannot move from the bottom chassis (15). The bar fixer (201) may be a type of the substrate fixer (200) described above. That is, the plurality of substrate fixers (200) may include the bar fixer (201). At least some of the plurality of substrate fixers (200) (i.e., bar fixers (201)) may be arranged to secure the substrate bar (1220) to the bottom chassis (15).

[0215] The bar fixer (201) may be provided to be mounted on the bottom chassis (15). The bottom chassis (15) may include a mounting portion (15a) on which the bar fixer (201) is provided to be mounted. The bar fixer (201) may be fixed to the bottom chassis (15) by being mounted on the mounting portion (15a). As the bar fixer (201) is mounted on the bottom chassis (15), the substrate bar (1220) may be fixed to the bottom chassis (15). The bottom chassis (15) may include a plurality of mounting portions (15a), and the number of mounting portions (15a) may correspond to the number of the plurality of bar fixers (201).

[0216] At least one bar fixer (201) may be arranged on each of the plurality of substrate bars (1220). As a result, the plurality of substrate bars (1220) may be respectively mounted on the bottom chassis (15) and each may be respectively fixed to the bottom chassis (15).

[0217] Each of the plurality of substrate bars (1220) may include a coupling portion (1225). Each of the plurality of substrate bars (1220) may be coupled to the bottom chassis (15) via the coupling portion (1225). A bar fixer (201) may be arranged at each coupling portion (1225) of the plurality of substrate bars (1220). Specifically, a bar fixer (201) may be coupled to each coupling portion (1225) of the plurality of substrate bars (1220). That is, the number of coupling portions (1225) may correspond to the number of bar fixers (201). The coupling portion (1225) of the substrate bar (1220) may also be referred to as a 'bar coupling portion (1225)'.

[0218] The bar fixer (201) is placed on the joint portion (1225) of the substrate bar (1220), so that the joint portion (1225) can be joined to the bottom chassis (15). As the bar fixer (201) is mounted on the mounting portion (15a) of the bottom chassis (15), the substrate bar (1220) can be fixed to the bottom chassis (15).

[0219] In other words, each of the plurality of bar fixers (201) can be placed on a joint (1225) formed on a corresponding respective substrate bar (1220) among the plurality of substrate bars (1220). Each of the plurality of bar fixers (201) can be coupled to the bottom chassis (15) by the joint (1225) formed on the corresponding respective substrate bar (1220) among the plurality of substrate bars (1220).

[0220] According to one or more embodiments, each of the plurality of bar fixers (201) can be detachably mounted to the bottom chassis (15). As a result, each of the plurality of substrate bars (1220) can be detachably mounted to the bottom chassis (15).

[0221] By this configuration, a plurality of substrate bars (1220) can be efficiently fixed to the bottom chassis (15). As a plurality of substrate bars (1220) are stably fixed to the bottom chassis (15), the durability of the product can be improved and the performance of the product can be enhanced.

[0222] A detailed description of the structure of the bar fixer (201) will be described later.

[0223] Referring to FIG. 7, the substrate bar (1220) may include a central extension portion (1221) extending in one direction. The central extension portion (1221) may constitute a portion of the light source substrate (1200) as a part of the substrate bar (1220). Each of the plurality of substrate bars (1220) may include a central extension portion (1221).

[0224] The central extension (1221) may extend in the second direction (Y direction). The width direction of the central extension (1221) may be parallel to the first direction (Z direction). The central extension (1221) may have a shape in which the extension length in the second direction (Y direction) is longer than the width in the first direction (Z direction).

[0225] The central extension (1221) may be provided at the center of the substrate bar (1220). The central extension (1221) may include an area extending through the center of the substrate bar (1220) in the second direction (Y direction).

[0226] In other words, the central extension (1221) can extend through the center of each substrate bar (1220) in the second direction (Y).

[0227] According to one or more embodiments, the central extension (1221) may be defined as an area having a roughly rectangular bar shape, as illustrated in FIG. 7.

[0228] Referring to FIG. 7, the substrate bar (1220) may include a first protrusion (1222a). The first protrusion (1222a) may constitute a portion of the light source substrate (1200) as a part of the substrate bar (1220).

[0229] The first protrusion (1222a) may protrude from one side of the central extension (1221). The first protrusion (1222a) may protrude from one side of the central extension (1221) in the first direction (+Z direction). The first protrusion (1222a) may extend from the central extension (1221) in the first direction (+Z direction). According to one or more embodiments, the first protrusion (1222a) may extend upward from the upper side of the central extension (1221).

[0230] According to one or more embodiments, the first protrusion (1222a) may be formed integrally with the central extension (1221).

[0231] According to one or more embodiments, the first protrusions (1222a) may be provided in multiple numbers in one substrate bar (1220). That is, the substrate bar (1220) may include multiple first protrusions (1222a).

[0232] The plurality of first protrusions (1222a) may be arranged relative to each other along the second direction (Y direction). According to one or more embodiments, the plurality of first protrusions (1222a) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other. According to one or more embodiments, the plurality of first protrusions (1222a) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0233] According to one or more embodiments, the plurality of first protrusions (1222a) may be formed to have shapes corresponding to each other. According to one or more embodiments, the lengths of each of the plurality of first protrusions (1222a) protruding from the central extension (1221) in the first direction (Z direction) may correspond to each other.

[0234] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of first protrusions (1222a). Hereinafter, the light source mounted on each of the plurality of first protrusions (1222a) is referred to as a "first side light source (1110)." According to one or more embodiments, one first side light source (1110) may be mounted on one first protrusion (1222a), but is not limited thereto.

[0235] A plurality of first side light sources (1110) may be arranged at positions spaced apart from the central extension (1221) in the first direction (Z direction). As illustrated in FIG. 7, the plurality of first side light sources (1110) may be arranged to be deflected upward from the central extension (1221).

[0236] A plurality of first-side light sources (1110) may be arranged relative to each other along the second direction (Y direction). According to one or more embodiments, the plurality of first-side light sources (1110) may be arranged such that their positions in the first direction (Z) correspond to each other. According to one or more embodiments, the plurality of first-side light sources (1110) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0237] Referring to FIG. 7, the substrate bar (1220) may include a second protrusion (1222b). The second protrusion (1222b) may constitute a portion of the light source substrate (1200) as a part of the substrate bar (1220).

[0238] The second protrusion (1222b) may protrude from the other side of the central extension (1221). The second protrusion (1222b) may protrude from the other side of the central extension (1221) in the first direction (Z direction). The other side of the central extension (1221) as referred to herein means a side different from one side of the central extension (1221) from which the first protrusion (1222a) protrudes. According to one or more embodiments, the second protrusion (1222b) may protrude from the other side of the central extension (1221) opposite to one side of the central extension (1221) from which the first protrusion (1222a) protrudes, in a direction opposite to the protrusion direction of the first protrusion (1222a).

[0239] The second protrusion (1222b) may extend in the first direction (Z direction) from the central extension (1221). According to one or more embodiments, the second protrusion (1222b) may extend downward from the lower side of the central extension (1221).

[0240] According to one or more embodiments, the second protrusion (1222b) may be formed integrally with the central extension (1221).

[0241] According to one or more embodiments, the second protrusions (1222b) may be provided in multiple numbers in one substrate bar (1220). That is, the substrate bar (1220) may include multiple second protrusions (1222b).

[0242] The plurality of second protrusions (1222b) may be arranged relative to each other along the second direction (Y direction). According to one or more embodiments, the plurality of second protrusions (1222b) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other. According to one or more embodiments, the plurality of second protrusions (1222b) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0243] According to one or more embodiments, the plurality of second protrusions (1222b) may be formed to have shapes corresponding to each other. For example, the lengths of each of the plurality of second protrusions (1222b) protruding from the central extension (1221) in the first direction (Z direction) may correspond to each other.

[0244] According to one or more embodiments, the length by which each of the plurality of first protrusions (1222a) protrudes from the central extension (1221) and the length by which each of the plurality of second protrusions (1222b) protrudes from the central extension (1221) may be approximately equal to each other. According to one or more embodiments, the shape of each of the plurality of first protrusions (1222a) and the shape of each of the plurality of second protrusions (1222b) may correspond to each other.

[0245] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of second protrusions (1222b). Hereinafter, the light source mounted on each of the plurality of second protrusions (1222b) is referred to as a "second-side light source (1120)." According to one or more embodiments, one second-side light source (1120) may be mounted on one second protrusion (1222b), but is not limited thereto.

[0246] A plurality of second side light sources (1120) may be arranged at positions spaced apart from the central extension (1221) in the first direction (Z direction). As illustrated in FIG. 7, the plurality of second side light sources (1120) may be arranged to be deflected downward from the central extension (1221).

[0247] A plurality of second-side light sources (1120) may be arranged relative to each other along the second direction (Y direction). According to one or more embodiments, the plurality of second-side light sources may be arranged such that their positions in the first direction (Z) correspond to each other. According to one or more embodiments, the plurality of second-side light sources (1120) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0248] Here, some areas of the central extension (1221) from which the plurality of first protrusions (1222a) protrude and other areas of the central extension (1221) from which the plurality of second protrusions (1222b) extend may be arranged to intersect along the second direction (Y direction). In other words, the first protrusions (1222a) and the second protrusions (1222b) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be arranged so as not to be parallel to each other in the first direction (Z) (i.e., offset).

[0249] By this configuration, the first side light source (1110) and the second side light source (1120) can be arranged to intersect each other along the second direction (Y direction). In one substrate bar (1220), the plurality of light sources (1100) can be arranged such that the first side light source (1110) arranged on one side in the first direction (Z) and the second side light source (1120) arranged on the other side intersect each other along the second direction (Y direction). In other words, in one substrate bar (1220), the plurality of light sources (1100) can be arranged such that the first side light source (1110) arranged on one side in the first direction (Z) and the second side light source (1120) arranged on the other side intersect each other along the central axis in the Z direction of one substrate bar (1220). This can improve the uniformity of brightness by multiple light sources (1100). That is, multiple light sources (1100) can be arranged in a zigzag pattern on one substrate bar (1220).

[0250] The substrate bar (1220) may include a plurality of first recessed portions (1223a). Each of the plurality of first recessed portions (1223a) may be formed between a pair of adjacent first protrusions (1222a) among the plurality of first protrusions (1222a). That is, the first recessed portion (1223a) may be defined as a portion of the substrate bar (1220) formed between a pair of adjacent first protrusions (1222a).

[0251] A plurality of first recessed portions (1223a) may be provided on one side of the central extension portion (1221) in the first direction (Z). According to one or more embodiments, the plurality of first recessed portions (1223a) may be provided on the upper side of the central extension portion (1221).

[0252] The plurality of first recessed portions (1223a) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relatively compared to the plurality of first protrusions (1222a).

[0253] The plurality of first recessed portions (1223a) may be arranged relative to each other along the second direction (Y direction). According to one or more embodiments, the plurality of first recessed portions (1223a) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other. According to one or more embodiments, the plurality of first recessed portions (1223a) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0254] According to one or more embodiments, the plurality of first recessed portions (1223a) may be formed to have shapes corresponding to each other.

[0255] The substrate bar (1220) may include a plurality of second recessed portions (1223b). Each of the plurality of second recessed portions (1223b) may be formed between a pair of second protrusions (1222b) that are adjacent to each other among the plurality of second protrusions (1222b). That is, the second recessed portion (1223b) may be defined as a portion of the substrate bar (1220) that is formed between a pair of second protrusions (1222b) that are adjacent to each other.

[0256] A plurality of second recessed portions (1223b) may be provided on the other side of the central extension portion (1221) in the first direction (Z). The other side of the central extension portion (1221) as referred to herein means a side different from the one side of the central extension portion (1221) where the first recessed portion (1223a) is provided. According to one or more embodiments, a plurality of second recessed portions (1223b) may be provided on the lower side of the central extension portion (1221).

[0257] The plurality of second recessed portions (1223b) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relatively compared to the plurality of second protrusions (1222b).

[0258] The plurality of second recessed portions (1223b) may be arranged relative to each other along the second direction (Y direction). According to one or more embodiments, the plurality of second recessed portions (1223b) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other. According to one or more embodiments, the plurality of second recessed portions (1223b) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0259] According to one or more embodiments, the plurality of second recessed portions (1223b) may be formed to have shapes corresponding to each other.

[0260] Some areas of the central extension (1221) having a plurality of first recessed portions (1223a) provided on one side and other areas of the central extension (1221) having a plurality of second recessed portions (1223b) provided on the other side may be arranged to intersect along the second direction (Y direction). In other words, the first recessed portions (1223a) and the second recessed portions (1223b) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b) may be arranged so as not to be parallel to each other in the first direction (Z) (i.e., offset).

[0261] According to one or more embodiments, each of the plurality of first protrusions (1222a) may be arranged parallel to a most adjacent second recessed portion (1223b) among the plurality of second recessed portions (1223b) in the first direction (Z). That is, the plurality of first protrusions (1222a) and the plurality of second recessed portions (1223b) may be arranged parallel to each other in the first direction (Z).

[0262] Also, as an example, each of the plurality of second protrusions (1222b) may be arranged parallel to one of the plurality of first recesses (1223a) that is closest to the first recess (1223a) in the first direction (Z). That is, the plurality of second protrusions (1222b) and the plurality of first recesses (1223a) may be arranged parallel to each other in the first direction (Z).

[0263] Due to this, the substrate bar (1220) can have a shape that extends in a zigzag pattern overall.

[0264] According to one or more embodiments, the shape of each of the plurality of first recessed portions (1223a) and the shape of each of the plurality of second recessed portions (1223b) may correspond to each other.

[0265] In each of the plurality of substrate bars (1220), the coupling portion (1225) may be positioned on the aforementioned central extension portion (1221). The coupling portion (1225) may be positioned at the center of the substrate bar (1220) in the width direction (i.e., the first direction (Z)). At this time, even if the coupling portion (1225) is positioned at the center of the substrate bar (1220) in the width direction, it does not necessarily mean that the center of the coupling portion (1225) must exactly coincide with the center of the substrate bar (1220) in the first direction (Z), or that a straight line passing through the center of the substrate bar (1220) in the second direction (Y) must pass through the center of the coupling portion (1225). It is sufficient that the coupling portion (1225) be positioned at a position adjacent to the center of the substrate bar (1220) in the first direction (Z) on the central extension portion (1221). That is, the joint portion (1225) can be formed at a specific position on a straight line passing through the center of the substrate bar (1220) in the first direction (Z) in the second direction (Y). Alternatively, the joint portion (1225) can be positioned on an area adjacent to the straight line passing through the center of the substrate bar (1220) in the first direction (Z) in the second direction (Y) on the substrate bar (1220).

[0266] In other words, each of the plurality of bar fixers (201) can be placed on the central extension (1221) of the corresponding substrate bar (1220). Each of the plurality of bar fixers (201) can be positioned at the center in the width direction (i.e., the first direction (Z)) of the corresponding substrate bar (1220).

[0267] In each of the plurality of substrate bars (1220), the coupling portion (1225) may be positioned on one side in the first direction (Z) with respect to one of the plurality of light sources (1100) mounted on the corresponding substrate bar (1220). The coupling portion (1225) may be positioned parallel to one of the plurality of light sources (1100) mounted on the corresponding substrate bar (1220) in the width direction (i.e., the first direction (Z)). At this time, the meaning that the coupling part (1225) is located on one side in the first direction (Z) with respect to one light source (1100) does not necessarily mean that the center of the coupling part (1225) and the center of the light source (1100) must be located simultaneously on a straight line extending in the first direction (Z), and it is sufficient that the coupling part (1225) be located at a position adjacent to a straight line passing through one light source (1100) in the first direction (Z). That is, the coupling part (1225) may be formed at a specific position on a straight line passing through one light source (1100) in the first direction (Z) on the substrate bar (1220). Alternatively, the coupling part (1225) may be disposed on an area adjacent to and within a predetermined distance from a straight line passing through one light source (1100) in the first direction (Z) on the substrate bar (1220). Here, one light source (1100) may be any one of a plurality of first-side light sources (1110) or any one of a plurality of second-side light sources (1120).

[0268] The connecting portion (1225) may be arranged parallel to any one of the plurality of first protrusions (1222a) or the plurality of second protrusions (1222b) in the first direction (Z). In other words, the connecting portion (1225) may be arranged parallel to any one of the plurality of first protrusions (1222a) in the first direction (Z), or may be arranged parallel to any one of the plurality of second protrusions (1222b) in the first direction (Z).

[0269] In other words, each of the plurality of bar fixers (201) may be arranged on one side in the first direction (Z) with respect to one of the plurality of light sources (1100) mounted on the corresponding substrate bar (1220). Each of the plurality of bar fixers (201) may be arranged side by side with one of the plurality of light sources (1100) mounted on the corresponding substrate bar (1220) in the first direction (Z). Each of the plurality of bar fixers (201) may be arranged at a position parallel to one of the plurality of first protrusions (1222a) or the plurality of second protrusions (1222b) on the corresponding substrate bar (1220) in the first direction (Z).

[0270] Accordingly, in each of the plurality of substrate bars (1220), the coupling portion (1225) may be positioned on a central extension portion (1221) of each of the plurality of substrate bars (1220) and may be disposed on one side in the first direction (Z) with respect to one of the plurality of light sources (1100) mounted on the substrate bars of each of the plurality of substrate bars (1220) (for example, one of the first-side light sources (1110) or the second-side light sources (1120). In other words, in each of the plurality of substrate bars (1220), the coupling portion (1225) may be disposed at the center in the width direction of each of the plurality of substrate bars (1220) and may be disposed at a widthwise parallel position with one of the plurality of light sources (1100) mounted on each of the plurality of substrate bars (1220). In another expression, in each of the plurality of substrate bars (1220), the connecting portion (1225) may be arranged in a first direction (Z) parallel to one of the plurality of first protrusions (1222a) or the plurality of second protrusions (1222b) in the corresponding respective central extensions (1221).

[0271] And, each of the plurality of bar fixers (201) is placed in a joint (1225) formed at such a position, so that the joint (1225) can be joined to the mounting portion (15a) of the bottom chassis (15).

[0272] According to one or more embodiments, at least some of the plurality of bar fixers (201) may be positioned adjacent to an end of at least one substrate bar (1220) among the plurality of substrate bars (1220). In other words, at least some of the plurality of coupling portions (1225) provided on the plurality of substrate bars (1220) may be positioned adjacent to an end of the substrate bar (1220). Here, the end of the substrate bar (1220) may mean one end of the substrate bar (1220) in a direction in which the substrate bar (1220) extends from the substrate body (1210) in the second direction (Y), and an end of the substrate bar (1220) opposite to the substrate body (1210). As the substrate bar (1220) extends long from the substrate body (1210), there is a possibility that the end opposite the substrate body (1210) may not be efficiently supported by the substrate body (1210). However, since the bar fixer (201) is positioned adjacent thereto to couple the joint (1225) to the bottom chassis (15), the end of the substrate bar (1220) can be efficiently maintained in a fixed position.

[0273] According to one or more embodiments, the coupling portions (1225) formed on each of the plurality of substrate bars (1220) may be arranged parallel to each other. According to one or more embodiments, as illustrated in FIG. 7, the coupling portions (1225) formed on each of the plurality of substrate bars (1220) may be arranged parallel to each other in the first direction (Z). Accordingly, the coupling portions (1225) formed on each of the plurality of substrate bars (1220) may be arranged on a central extension portion (1221) of each of the plurality of substrate bars (1220), and may be arranged on a straight line in the first direction (Z) connecting one light source (1100) among the plurality of light sources (1100) mounted on each of the plurality of substrate bars (1220) and being parallel to each other in the first direction (Z).

[0274] In response, a plurality of bar fixers (201) may be arranged parallel to each other. As illustrated in FIG. 7, a plurality of bar fixers (201) may be arranged parallel to each other in the first direction (Z).

[0275] According to one or more embodiments, one of the plurality of substrate bars (1220) as illustrated in FIG. 7 may be fixed to the bottom chassis (15) by a plurality of bar fixers (201), and a plurality of joints (1225) may be formed on one substrate bar (1220).

[0276] At this time, a plurality of joints (1225) on one substrate bar (1220) can be arranged parallel to each other in the second direction (Y). Correspondingly, a plurality of bar fixers (201) arranged on one substrate bar (1220) can be arranged parallel to each other in the second direction (Y).

[0277] According to one or more embodiments, some of the coupling portions (1225) formed on one substrate bar (1220) may be formed at positions adjacent to the end portions (1220e) of the substrate bar (1220), and other of the coupling portions (1225) may be formed at positions between the coupling portions (1225) formed at positions adjacent to the end portions (1220e) of the substrate bar (1220) and the substrate body (1210). As an example, the plurality of coupling portions (1225) formed at positions adjacent to the end portions (1220e) of each of the plurality of substrate bars (1220) may be arranged parallel to each other along the first direction (Z). In addition, as an example, a plurality of joints (1225) formed at a position between the joints (1225) formed at a position adjacent to the end (1220e) of each of the plurality of substrate bars (1220) and the substrate body (1210) may be arranged in parallel along the first direction (Z).

[0278] However, in contrast, only one joint (1225) may be formed on one substrate bar (1220), and one substrate bar (1220) may be fixed to the bottom chassis (15) by only one bar fixer (201).

[0279] FIG. 8 is a drawing illustrating a substrate bar of a display device and a bar fixer coupled thereto according to one or more embodiments. FIG. 9 is a drawing illustrating a substrate bar of a display device and a bar fixer coupled thereto according to one or more embodiments.

[0280] FIGS. 8 and 9 illustrate one substrate bar (1220) among a plurality of substrate bars (1220) included in a display device (1) according to one or more embodiments, but the description of the characteristics of one substrate bar (1220) described with reference to FIGS. 8 and 9 can be applied to the characteristics of each of the plurality of substrate bars (1220).

[0281] In addition, although FIGS. 8 and 9 illustrate one bar fixer (201) among a plurality of bar fixers (201) included in a display device (1) according to one or more embodiments, the description of the characteristics of one bar fixer (201) described with reference to FIGS. 8 and 9 can be applied correspondingly to the characteristics of each of the plurality of bar fixers (201).

[0282] Referring to FIGS. 8 and 9, a plurality of light sources (1100) mounted on one substrate bar (1220) included in a display device (1) according to one or more embodiments may be arranged to be spaced apart from a central extension (1221).

[0283] According to one or more embodiments, the substrate bar (1220) may include a plurality of first side light sources (1110) arranged on one side relative to the central extension (1221) of the substrate bar (1220), and a plurality of second side light sources (1120) arranged on the other side relative to the central extension (1221).

[0284] The substrate bar (1220) may include a power supply line (1230, see FIG. 4) configured to supply power to a plurality of light sources (1100). The power supply line (1230) may be electrically connected to the plurality of light sources (1100) and may supply power to the plurality of light sources (1100) or transmit a control signal to drive each of the light sources (1100).

[0285] The power supply line (1230) may include a first line (1231) (which may also be referred to as a 'first power supply line') arranged along a location where a plurality of first-side light sources (1110) are arranged. The first line (1231) may be electrically connected to the plurality of first-side light sources (1110). The plurality of first-side light sources (1110) may be electrically connected to each other by the first line (1231).

[0286] According to one or more embodiments, the first line (1231) may be positioned at a location spaced apart from the center of the substrate bar (1220) in the first direction (Z). In other words, the first line (1231) may be positioned so as to be spaced apart from a straight line passing through the center of the substrate bar (1220) in the first direction (Z) in the second direction (Y).

[0287] In this case, as illustrated in FIGS. 8 and 9, the first line (1231) may be positioned so that a portion thereof overlaps the central extension (1221). Alternatively, the first line (1231) may be positioned outside the central extension (1221) and spaced apart from the central extension (1221).

[0288] The power supply line (1230) may include a second line (1232) (which may also be referred to as a “second power supply line”) arranged along a location where a plurality of second-side light sources (1120) are arranged. The second line (1232) may be electrically connected to the plurality of second-side light sources (1120). The plurality of second-side light sources (1120) may be electrically connected to each other by the second line (1232).

[0289] According to one or more embodiments, the second line (1232) may be positioned at a location spaced apart from the center of the substrate bar (1220) in the first direction (Z). In other words, the second line (1232) may be positioned so as to be spaced apart from a straight line passing through the center of the substrate bar (1220) in the first direction (Z) in the second direction (Y).

[0290] In this case, as illustrated in FIGS. 8 and 9, the second line (1232) may be positioned so that a portion thereof overlaps the central extension (1221). Alternatively, the second line (1232) may be positioned outside the central extension (1221) and spaced apart from the central extension (1221).

[0291] According to one or more embodiments, the first line (1231) and the second line (1232) may be electrically connected to each other at one end of the substrate bar (1220), the substrate body (1210), etc. According to one or more embodiments, the first line (1231) and the second line (1232) may be connected to each other to form a portion of a closed circuit.

[0292] The coupling portion (1225) may be positioned apart from the first line (1231) to prevent interference with the first line (1231), i.e., to avoid the first line (1231). Specifically, the coupling portion (1225) may be positioned apart from the first line (1231) in the first direction (Z). According to one or more embodiments, the coupling portion (1225) may be positioned below (in the -Z direction) the first line (1231).

[0293] The coupling portion (1225) may be positioned apart from the second line (1232) to prevent interference with the second line (1232), i.e., to avoid the second line (1232). Specifically, the coupling portion (1225) may be positioned apart from the second line (1232) in the first direction (Z). According to one or more embodiments, the coupling portion (1225) may be positioned above (in the +Z direction) the second line (1232).

[0294] Since the bar fixer (201) is arranged at the joint portion (1225) of the substrate bar (1220), it may be desirable for the joint portion (1225) and the power supply line (1230) not to interfere with each other in order to smoothly supply power to the light source (1100). In particular, as described below, the joint portion (1225) may include a substrate hole (1225h), and the substrate hole (1225h) may be formed in a shape that allows the substrate bar (1220) to penetrate in the front-back direction (X direction), so it may be required that the joint portion (1225) be provided at a position that avoids the power supply line (1230).

[0295] Accordingly, the coupling portion (1225) can be placed between the first line (1231) and the second line (1232) of the power supply line (1230) to avoid the power supply line (1230).

[0296] Meanwhile, the first line (1231) and the second line (1232) may each be formed to have a predetermined thickness. In addition, according to some embodiments, the first line (1231) or the second line (1232) may each be formed to have multiple patterns.

[0297] Therefore, in order to prevent the coupling portion (1225) from interfering with the power supply line (1230), the coupling portion (1225) may be required to be provided with a sufficient distance from the power supply line (1230), such as the first line (1231) and the second line (1232). If the coupling portion (1225) is arranged adjacent to a part of the power supply line (1230), such as the first line (1231) or the second line (1232), there is a possibility that the power supply line (1230) may be damaged during the process of mounting the bar fixer (201) to the coupling portion (1225), which may be problematic. Alternatively, if the joint (1225) is positioned adjacent to a portion of the power supply line (1230), an error occurring in the process of forming the substrate hole (1225h) at the position of the joint (1225) of the substrate bar (1220) may increase the possibility that the substrate hole (1225h) overlaps with the position of the power supply line (1230), which may cause a problem as the power supply line (1230) may be damaged.

[0298] In this way, the joint (1225) may be required to be formed within an area with a wide surface area so as not to interfere with the power supply line (1230) on the substrate bar (1220).

[0299] As described above, the joint portion (1225) can be formed on the central extension portion (1221). As a result, the joint portion (1225) can be formed at a position that is not excessively biased to one side in the first direction (Z) from the center of the substrate bar (1220).

[0300] Additionally, as described above, the coupling portion (1225) may be positioned on one side of the central extension portion (1221) in the first direction (Z) with respect to one of the plurality of light sources (1100).

[0301] As illustrated in FIGS. 8 and 9, in one or more embodiments, each of the plurality of light sources (1100) may be arranged to be spaced outwardly from the central extension (1221). In this case, it can be expected that the power supply line (1230) arranged along the plurality of light sources (1100) will generally have the longest distance in the first direction (Z) from the central extension (1221) at a position connected to each of the plurality of light sources (1100). Accordingly, when the coupling portion (1225) is formed at a position parallel to one of the plurality of light sources (1100) in the first direction (Z) on the central extension (1221), the possibility of interference between the coupling portion (1225) and the power supply line (1230) may be reduced.

[0302] According to one or more embodiments, as illustrated in FIG. 8, the coupling portion (1225) may be arranged in a first direction (Z) parallel to one of the plurality of second side light sources (1120) in the central extension portion (1221).

[0303] According to one or more embodiments, as illustrated in FIG. 8, the coupling portion (1225) may be arranged parallel to any one of the plurality of second protrusions (1222b) in the first direction (Z) in the central extension portion (1221).

[0304] According to one or more embodiments, as illustrated in FIG. 8, the connecting portion (1225) may be arranged parallel to the first direction (Z) of the shortest portion (1222bb) of one of the plurality of second protrusions (1222b) in the central extension (1221). Here, the shortest portion (1222bb) of the second protrusion (1222b) in the first direction (Z) refers to the end of the second protrusion (1222b) that is located furthest from the central extension (1221) in the first direction (Z).

[0305] According to one or more embodiments, as illustrated in FIG. 8, the connecting portion (1225) may be positioned at a position where a line connecting the inner end (1223aa) of the first recessed portion (1223a) in the first direction (Z) and the shortest end (1222bb) of the second protrusion (1222b) in the first direction (Z) passes through the central extension portion (1221). Here, the inner end (1223aa) of the first recessed portion (1223a) in the first direction (Z) refers to the inner end that is closest to the central extension portion (1221) in the first direction (Z) among the edges of the first recessed portion (1223a).

[0306] According to one or more embodiments, the radius of curvature of the edge of the first recessed portion (1223a) may be formed to be greater than the radius of curvature of the edge of the second protrusion (1222b). Accordingly, the width of the substrate bar (1220) in the first direction (Z) may be widest at a portion where a line connecting the inner end (1223aa) of the first recessed portion (1223aa) in the first direction (Z) and the shortest end (1222bb) of the second protrusion (1222b) in the first direction (Z) passes. Accordingly, it may be most preferable that the connecting portion (1225) be formed at a position where a line connecting the inner end (1223aa) of the first recessed portion (1223a) in the first direction (Z) and the shortest end (1222bb) of the second protrusion (1222b) in the first direction (Z) passes on the central extension portion (1221).

[0307] According to one or more embodiments, as illustrated in FIG. 9, the coupling portion (1225) may be arranged in a first direction (Z) parallel to any one of the plurality of first side light sources (1110) in the central extension portion (1221).

[0308] According to one or more embodiments, as illustrated in FIG. 9, the coupling portion (1225) may be arranged parallel to any one of the plurality of first protrusions (1222a) in the first direction (Z) in the central extension portion (1221).

[0309] According to one or more embodiments, as illustrated in FIG. 9, the connecting portion (1225) may be arranged parallel to the first direction (Z) with the shortest portion (1222aa) of one of the plurality of first protrusions (1222a) in the central extension (1221). Here, the shortest portion (1222aa) in the first direction (Z) of the first protrusion (1222a) refers to the end of the first protrusion (1222a) that is located furthest from the central extension (1221) in the first direction (Z).

[0310] According to one or more embodiments, as illustrated in FIG. 9, the connecting portion (1225) may be positioned at a position where a line connecting the inner end (1223bb) of the second recessed portion (1223b) in the first direction (Z) and the shortest end (1222aa) of the first protrusion (1222a) in the first direction (Z) passes through the central extension portion (1221). Here, the inner end (1223bb) of the second recessed portion (1223b) in the first direction (Z) refers to the inner end that is closest to the central extension portion (1221) in the first direction (Z) among the edges of the second recessed portion (1223b).

[0311] According to one or more embodiments, the radius of curvature of the edge of the second recessed portion (1223b) may be formed to be greater than the radius of curvature of the edge of the first protrusion (1222a). Accordingly, the width of the substrate bar (1220) in the first direction (Z) may be widest at a portion where a line connecting the inner end (1223bb) of the second recessed portion (1223b) in the first direction (Z) and the shortest end (1222aa) of the first protrusion (1222a) in the first direction (Z) passes. Accordingly, it may be most preferable that the connecting portion (1225) be formed at a position where a line connecting the inner end (1223bb) of the second recessed portion (1223b) in the first direction (Z) and the shortest end (1222aa) of the first protrusion (1222a) in the first direction (Z) passes on the central extension portion (1221).

[0312] By this structure, the joint (1225) formed at the position where the bar fixer (201) is placed in the substrate bar (1220) can be effectively prevented from interfering with the power supply line (1230), such as the first line (1231) and the second line (1232).

[0313] The description of the positions of the bar fixer (201) and the joint portion (1225) where the bar fixer (201) is arranged, described above with reference to FIGS. 7 to 9, is merely one or more embodiments of positions where the bar fixer for fixing a plurality of substrate bars to the bottom chassis and the joint portion of the substrate bar where the bar fixer is arranged can be located in the display device according to the concept of the present disclosure, and the concept of the present disclosure is not limited thereto.

[0314] Hereinafter, one or more embodiments of a structure of a bar fixer (201), which is a type of a substrate fixer (200), and one or more embodiments of a structure for fixing a substrate bar (1220) to a bottom chassis (15) through the bar fixer (201) will be described in detail. However, the bar fixer (201) described below is merely an example of embodiments of a configuration for fixing a substrate bar (1220) to a bottom chassis (15), and the spirit of the present disclosure is not limited thereto. According to one or more embodiments, in a display device according to the spirit of the present disclosure, a substrate bar may be fixed to a bottom chassis by various structural members such as a bracket, a clip, and a fastening member.

[0315] FIG. 10 is a drawing illustrating a substrate bar of a display device according to one or more embodiments and a bar fixer coupled thereto. FIG. 11 is a drawing illustrating a bar fixer of a display device according to one or more embodiments. FIG. 12 is a drawing illustrating a mounting portion provided on a bottom chassis of a display device according to one or more embodiments.

[0316] Referring to FIGS. 10 to 12, a display device (1) according to one or more embodiments may include a bar fixer (201) configured to fix a substrate bar (1220) to a bottom chassis (15). The bar fixer (201) may be configured to mount the substrate bar (1220) to the bottom chassis (15). The bar fixer (201) may be a type of substrate fixer (200) configured to mount a light source substrate (1200) to the bottom chassis (15). In other words, the substrate fixer (200) may include the bar fixer (201).

[0317] The bar fixer (201) can be mounted on the substrate bar (1220). The bar fixer (201) can be fixed to the substrate bar (1220). The bar fixer (201) can be coupled to the coupling portion (1225) of the substrate bar (1220).

[0318] According to one or more embodiments, the bar fixer (201) may include a substrate coupling portion (230) coupled to the substrate bar (1220). The bar fixer (201) may be secured to the substrate bar (1220) via the substrate coupling portion (230). The bar fixer (201) may be supported on the substrate bar (1220) via the substrate coupling portion (230). The substrate coupling portion (230) may be in contact with the substrate bar (1220).

[0319] According to one or more embodiments, the bar fixer (201) may be secured to the substrate bar (1220) by solder that joins the substrate joint portion (230) to the substrate bar (1220). Alternatively, as an example, the bar fixer (201) may be secured to the substrate bar (1220) by adhesive that joins the substrate joint portion (230) to the substrate bar (1220). However, the present invention is not limited thereto, and the bar fixer (201) may be secured to the substrate bar (1220) by various methods. According to one or more embodiments, the bar fixer (201) may be secured to the substrate bar (1220) by a fastening member (not shown), such as a pin or screw, that penetrates the substrate joint portion (230).

[0320] According to one or more embodiments, the substrate bonding portion (230) may include a contact surface (230a) provided to contact one surface of the substrate bar (1220). The contact surface (230a) may have a shape corresponding to one surface of the substrate bar (1220). According to one or more embodiments, the contact surface (230a) may be formed in a planar shape. In this case, the bar fixer (201) may be fixed to the substrate bar (1220) by solder, adhesive, or the like provided between the contact surface (230a) and one surface of the substrate bar (1220).

[0321] According to one or more embodiments, the bar fixer (201) may be arranged to mount the substrate bar (1220) to the bottom chassis (15) from a side of the substrate bar (1220) facing the bottom chassis (15). In other words, the bar fixer (201) may be arranged to mount the substrate bar (1220) to the bottom chassis (15) from the rear of the substrate bar (1220).

[0322] According to one or more embodiments, the bar fixer (201) may be provided on one side of the substrate bar (1220) facing the bottom chassis (15). Specifically, the bar fixer (201) may be coupled to one side of the substrate bar (1220) facing the bottom chassis (15). The bar fixer (201) may be coupled to the back surface of the substrate bar (1220). The substrate coupling portion (230) described above may be coupled to one side of the substrate bar (1220) facing the bottom chassis (15).

[0323] According to one or more embodiments, the substrate bar (1220) may be configured as a single-sided PCB in which a circuit pattern is formed only on the front surface where the light source (1100) is mounted among the two sides in the front-back direction (X). In this case, the bar fixer (201) may be coupled to the back surface of the substrate bar (1220) facing the bottom chassis (15) by various coupling methods such as solder or adhesive.

[0324] Alternatively, the substrate bar (1220) may be configured as a double-sided PCB in which circuit patterns are formed on both sides in the front-back direction (X). In this case, the bar fixer (201) may be bonded to the back surface of the substrate bar (1220) facing the bottom chassis (15) by various bonding methods, such as solder, adhesive, or a separate PCB mounting structure.

[0325] According to one or more embodiments, the bar fixer (201) may include a plurality of substrate coupling portions (230). Specifically, as illustrated in FIGS. 10 and 11 , the bar fixer (201) may include a pair of substrate coupling portions (230). Each of the pair of substrate coupling portions (230) may be coupled to a substrate bar (1220). Specifically, each of the pair of substrate coupling portions (230) may be coupled to one surface of the substrate bar (1220) at positions spaced apart from each other.

[0326] According to one or more embodiments, the pair of substrate coupling portions (230) may be arranged to face each other in a direction different from the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15) (e.g., the direction in which the bar fixer (201) slides relative to the mounting portion (15a) while being mounted thereto, as described below). According to one or more embodiments illustrated in FIG. 10, the pair of substrate coupling portions (230) may be arranged to face each other in the first direction (Z).

[0327] According to one or more embodiments, the pair of substrate coupling portions (230) may be arranged symmetrically with respect to the center of the bar fixer (201). According to one or more embodiments, the pair of substrate coupling portions (230) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in a direction parallel to the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15). According to one or more embodiments illustrated in FIG. 10, the pair of substrate coupling portions (230) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in the second direction (Y).

[0328] In this way, the bar fixer (201) can be more firmly fixed to the substrate bar (1220) by including a plurality of substrate coupling portions (230), and can be more stably supported by the substrate bar (1220). The number of substrate coupling portions (230) is not limited to the number shown in FIGS. 10 and 11, and a single bar fixer (201) can be provided with a variety of substrate coupling portions (230).

[0329] Unlike what has been described above, the bar fixer (201) can be bonded to the substrate bar (1220) through various structures.

[0330] The bar fixer (201) can fix the substrate bar (1220) and the bottom chassis (15) by being mounted on the bottom chassis (15). The bar fixer (201) can fix the substrate bar (1220) and the bottom chassis (15) by being coupled to the bottom chassis (15).

[0331] In detail, as described above, the bottom chassis (15) may include a mounting portion (15a) provided to mount a bar fixer (201). When mounted on the mounting portion (15a), the bar fixer (201) may come into contact with one surface of the mounting portion (15a).

[0332] The bar fixer (201) may include a fixed body (210) arranged to be in contact with the bottom chassis (15). According to one or more embodiments, the fixed body (210) may be in contact with a surface of the bottom chassis (15) opposite to the substrate bar (1220). In other words, the fixed body (210) may be in contact with the back surface of the bottom chassis (15). At this time, the front surface of the bottom chassis (15) may be in contact with the substrate bar (1220), and the back surface of the bottom chassis (15) may be in contact with the fixed body (210). With this structure, the bottom chassis (15) may be in contact with both components simultaneously while a portion thereof is disposed between the substrate bar (1220) and the fixed body (210), and thus the substrate bar (1220) may be fixed to the bottom chassis (15).

[0333] That is, the fixed body (210) may be provided to be in contact with the mounting portion (15a). According to one or more embodiments, the fixed body (210) may be provided to be in contact with a surface opposite to the substrate bar (1220) of the mounting portion (15a). The fixed body (210) may be in contact with the back surface of the bottom chassis (15).

[0334] One side of the fixed body (210) that comes into contact with the mounting portion (15a) of the bottom chassis (15) can be positioned so as to face the substrate bar (1220).

[0335] According to one or more embodiments, the fixed body (210) may be provided such that one surface contacting the mounting portion (15a) of the bottom chassis (15) is parallel to the substrate bar (1220). According to one or more embodiments, the fixed body (210) may be provided such that one surface contacting the mounting portion (15a) of the bottom chassis (15) is parallel to the mounting portion (15a).

[0336] More specifically, the fixed body (210) may include a cover portion (211) that covers one side opposite to the substrate bar (1220) of the bottom chassis (15), and an interference protrusion (212) protruding from the cover portion (211).

[0337] The cover part (211) may be provided to cover the back surface of the bottom chassis (15). In a state where the bar fixer (201) is mounted on the mounting part (15a), the cover part (211) may be provided to cover the back surface opposite to the front surface facing the substrate bar (1220) of the mounting part (15a).

[0338] According to one or more embodiments, the cover portion (211) may be arranged to be parallel to one side of the mounting portion (15a). According to one or more embodiments, the cover portion (211) may be formed to have a substantially flat plate shape.

[0339] The interference protrusion (212) may be provided so as to come into contact with the mounting portion (15a) when the bar fixer (201) is mounted on the mounting portion (15a). The interference protrusion (212) may be provided so as to interfere with the mounting portion (15a) when the bar fixer (201) is mounted on the mounting portion (15a). The interference protrusion (212) may be provided so as to press the mounting portion (15a) in the direction in which the substrate bar (1220) is positioned when the bar fixer (201) is mounted on the mounting portion (15a).

[0340] According to one or more embodiments, the interference protrusion (212) may protrude from the cover portion (211) toward the back surface of the bottom chassis (15). In other words, the interference protrusion (212) may protrude from the cover portion (211) toward the mounting portion (15a). In other words, the interference protrusion (212) may protrude from the cover portion (211) toward the substrate bar (1220). Based on one or more embodiments illustrated in FIGS. 10 and 11, the interference protrusion (212) may protrude forward (in the +X direction) from the cover portion (211).

[0341] By means of the interference protrusion (212), the bar fixer (201) can be more firmly mounted to the mounting portion (15a) of the bottom chassis (15). As a result, the bar fixer (201) and the substrate bar (1220) can be more stably fixed to the bottom chassis (15).

[0342] However, the structure of the fixed body (210) is not limited thereto, and the fixed body (210) may have various structures that allow the substrate bar (1220) to be fixed to the bottom chassis (15) by contacting the mounting portion (15a) of the bottom chassis (15).

[0343] The bottom chassis (15) may include a chassis hole (15b) so that the fixed body (210) can be mounted in contact with the back surface of the mounting portion (15a). The chassis hole (15b) may be formed to be penetrated by a bar fixer (201). The bar fixer (201) may be arranged to penetrate the chassis hole (15b). According to one or more embodiments, the chassis hole (15b) may be formed in the shape of a hole formed by a substrate bar (1220) penetrating in the front-back direction (X).

[0344] According to one or more embodiments, the chassis hole (15b) may have an approximately rectangular shape as shown in the drawing, but the shape is not limited thereto.

[0345] The substrate bar (1220) positioned on one side of the bottom chassis (15) based on the chassis hole (15b) can contact one surface of the bottom chassis (15), and the fixed body (210) positioned on the other side of the bottom chassis (15) based on the chassis hole (15b) can contact the other surface of the bottom chassis (15). With this structure, the bar fixer (201) and the substrate bar (1220) can be mounted on the bottom chassis (15).

[0346] Specifically, the mounting portion (15a) may be provided in the chassis hole (15b). The mounting portion (15a) may be located on the inside of the chassis hole (15b). For example, the mounting portion (15a) may extend from one side of the edge (15e) of the chassis hole (15b) toward the inside of the edge of the chassis hole (15b).

[0347] The mounting portion (15a) may extend in one direction from one side of the edge (15e) of the chassis hole (15b). Here, the direction in which the mounting portion (15a) extends may be parallel to the direction in which the bar fixer (201) is mounted on the mounting portion (15a) (for example, the direction in which the bar fixer (201) slides relative to the mounting portion (15a) when mounted on the mounting portion (15a) as described below). Specifically, the mounting portion (15a) may extend in a direction opposite to the direction in which the bar fixer (201) is mounted on the mounting portion (15a) from one side of the edge (15e) of the chassis hole (15b). According to one or more embodiments illustrated in FIG. 12, the mounting portion (15a) may extend in a second direction (Y) from one side of the edge (15e) of the chassis hole (15b).

[0348] The bar fixer (201) may include an extension (220). The extension (220) may be connected to a fixed body (210). The extension (220) may extend from the fixed body (210).

[0349] Specifically, the extension (220) may extend from the fixed body (210) toward the substrate bar (1220). According to one or more embodiments, the extension (220) may connect the fixed body (210) and the substrate coupling portion (230). The extension (220) may extend from the fixed body (210) to the substrate coupling portion (230).

[0350] According to one or more embodiments, the extension portion (220) may extend in a different direction from the fixed body (210). According to one or more embodiments, the extension portion (220) may extend in a different direction from the substrate coupling portion (230). According to one or more embodiments illustrated in FIGS. 10 and 11, the extension portion (220) may extend approximately along the forward-backward direction (X), and the extension portion (220) may extend forward (in the +X direction) from the fixed body (210).

[0351] The extension portion (220) may be provided to penetrate the chassis hole (15b). Specifically, the extension portion (220) may extend from the fixed body (210) to penetrate the chassis hole (15b). The extension portion (220) may extend from the fixed body (210) through the chassis hole (15b) toward the substrate bar (1220).

[0352] By means of the extension (220), the fixed body (210) and the substrate bar (1220) can be arranged to be spaced apart from each other. Specifically, the back surface of the substrate bar (1220) and the fixed body (210) can be arranged to face each other at a position spaced apart from each other by the extension (220). As a result, a spaced space can be formed between the substrate bar (1220) and the fixed body (210). When the bar fixer (201) is mounted on the mounting portion (15a), the mounting portion (15a) can be arranged in the spaced space between the substrate bar (1220) and the fixed body (210).

[0353] In other words, when the bar fixer (201) is mounted on the mounting portion (15a), the fixed body (210) and the extension portion (220) can be arranged to surround at least a portion of the mounting portion (15a).

[0354] With this structure, the bar fixer (201) can be more stably mounted on the mounting portion (15a). In addition, with this structure, the bar fixer (201) and the substrate bar (1220) can be more stably fixed to the bottom chassis (15).

[0355] According to one or more embodiments, the bar fixer (201) may include a plurality of extensions (220). Specifically, as illustrated in FIGS. 10 and 11 , the bar fixer (201) may include a pair of extensions (220). Each of the pair of extensions (220) may be connected to a fixed body (210). Each of the pair of extensions (220) may be connected to the fixed body (210) at positions spaced apart from each other.

[0356] According to one or more embodiments, the pair of extensions (220) may be arranged to face each other in a direction different from the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15) (e.g., the direction in which the bar fixer (201) slides relative to the mounting portion (15a) while being mounted thereto, as described below). According to one or more embodiments illustrated in FIG. 10, the pair of extensions (220) may be arranged to face each other in the first direction (Z). According to one or more embodiments illustrated in FIG. 10, the pair of extensions (220) may each extend from both sides of the fixed body (210) in the first direction (Z) toward the substrate bar (1220).

[0357] According to one or more embodiments, each of the pair of extensions (220) may extend along the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15).

[0358] According to one or more embodiments, the pair of extensions (220) may be arranged symmetrically with respect to a center of the bar fixer (201). According to one or more embodiments, the pair of extensions (220) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in a direction parallel to the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15). According to one or more embodiments illustrated in FIG. 10, the pair of extensions (220) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in the second direction (Y).

[0359] In this way, the bar fixer (201) can be more stably supported on the substrate bar (1220) by including a plurality of extension parts (220). In addition, the bar fixer (201) can be more stably mounted on the mounting part (15a) by including a plurality of extension parts (220). The number of extension parts (220) is not limited to the number shown in FIGS. 10 and 11, and a single bar fixer (201) can be provided with a variety of extension parts (220).

[0360] By the structure described above, the bar fixer (201) can be stably mounted on the mounting portion (15a) of the bottom chassis (15), and the substrate bar (1220) can be stably fixed to the bottom chassis (15) using the bar fixer (201).

[0361] Each component of the bar fixer (201) described above may be arranged to be symmetrical with respect to the center of the bar fixer (201). According to one or more embodiments, each component of the bar fixer (201) described above may be arranged to be symmetrical with respect to a center line passing through the center of the bar fixer (201) in the first direction (Z). In addition, for example, each component of the bar fixer (201) described above may be arranged to be symmetrical with respect to a center line passing through the center of the bar fixer (201) in the second direction (Y). As the bar fixer (201) is provided to have a structure symmetrical with respect to the center in this way, when manufacturing to couple the bar fixer (201) to the substrate bar (1220) is performed, the constraints on the direction of the bar fixer (201) with respect to the substrate bar (1220) can be reduced, and the manufacturer performing this work can have little consideration for the direction of the bar fixer (201), so that the efficiency of the work to couple the bar fixer (201) to the substrate bar (1220) can be improved. As a result, the manufacturing time and manufacturing cost can be reduced.

[0362] FIG. 13 is a diagram illustrating a state before a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis. FIG. 14 is a diagram illustrating a state after a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis. FIG. 15 is a diagram illustrating a state before a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis. FIG. 16 is a diagram illustrating a state after a light source substrate of a display device according to one or more embodiments is mounted on a bottom chassis.

[0363] Referring to FIGS. 13 to 16, in a display device (1) according to one or more embodiments, a light source substrate (1200) can be mounted on a bottom chassis (15) by sliding relative to the bottom chassis (15).

[0364] In detail, the bar fixer (201) coupled to the substrate bar (1220) may be arranged to slide in one direction relative to the bottom chassis (15) and be mounted on the bottom chassis (15). The bar fixer (201) may be arranged to slide in one direction relative to the mounting portion (15a) and be mounted on the mounting portion (15a).

[0365] Referring to FIGS. 13 and 15, at a position before the bar fixer (201) is mounted on the mounting portion (15a), the bar fixer (201) may be positioned to penetrate the chassis hole (15b). At this time, the extension (220) of the bar fixer (201) may be positioned to penetrate the chassis hole (15b), and a substrate bar (1220) may be positioned in front (in the +X direction) of the chassis hole (15b), and a fixed body (210) may be positioned in the rear (in the -X direction) of the chassis hole (15b).

[0366] Thereafter, as illustrated in FIGS. 14 and 16, as the bar fixer (201) moves in one direction relative to the mounting portion (15a) and approaches the mounting portion (15a), the fixed body (210) may come into contact with the back surface of the mounting portion (15a). Specifically, as the bar fixer (201) moves in one direction relative to the mounting portion (15a) and approaches the mounting portion (15a), the interference protrusion (212) of the fixed body (210) may press the mounting portion (15a). At this time, the substrate bar (1220) may come into contact with the front surface of the bottom chassis (15), and the fixed body (210) may come into contact with the back surface of the bottom chassis (15). In addition, the fixed body (210) and the extension portion (220) may be arranged to surround at least a portion of the mounting portion (15a). Due to this, the bar fixer (201) can be mounted on the mounting portion (15a), and the substrate bar (1220) can be fixed to the bottom chassis (15).

[0367] According to one or more embodiments, the mounting portion (15a) may include a fixed end (15aa) connected to another portion of the bottom chassis (15). At this time, the fixed end (15aa) of the mounting portion (15a) may extend in an inclined direction so as to face rearward (-X direction) opposite to the direction in which the bottom chassis (15) faces the substrate body (1210) as it extends from another portion of the bottom chassis (15) toward the mounting portion (15aa). The mounting portion (15a) may be positioned rearward (-X direction) relative to another portion of the bottom chassis (15) connected to the fixed end (15aa) by the fixed end (15aa). When the bar fixer (201) is mounted on the mounting portion (15a), a fixed body (210) is positioned at the rear of the mounting portion (15a). Therefore, with this structure, the degree to which the fixed body (210) presses the mounting portion (15a) can be further increased, and the bar fixer (201) can be mounted more firmly on the mounting portion (15a).

[0368] As illustrated in FIGS. 13 to 16, the bar fixer (201) may include a slope guide (240).

[0369] A slope guide (240) may be provided at one end of the bar fixer (201) in the direction in which the bar fixer (201) slides when mounted on the mounting portion (15a). The slope guide (240) may guide the movement of the bar fixer (201) so that the bar fixer (201) can be stably mounted on the mounting portion (15a) when the bar fixer (201) slides in the direction in which the bar fixer (201) is mounted on the mounting portion (15a).

[0370] In detail, the inclined guide (240) may be provided at an end in the sliding movement direction of the fixed body (210) (hereinafter, referred to as a “one-way end of the fixed body (210)”). The inclined guide (240) may extend from the one-way end of the fixed body (210) in a direction away from one surface of the bottom chassis (15) as the fixed body (210) moves in the sliding movement direction. The inclined guide (240) may extend in an inclined direction with respect to the fixed body (210).

[0371] According to this configuration, when the bar fixer (201) slides toward the mounting portion (15a), the inclined guide (240) can reach the mounting portion (15a) before the fixed body (210) reaches the mounting portion (15a), and the movement of the bar fixer (201) toward the mounting portion (15a) can be guided due to the inclined structure of the inclined guide (240).

[0372] By this configuration, the process of mounting the substrate bar (1220) to the bottom chassis (15) can be performed more efficiently, and the manufacturing time and manufacturing cost can be reduced.

[0373] Meanwhile, as illustrated in FIGS. 13 to 16, the inclined guide (240) structure of the bar fixer (201) described above may be provided to be symmetrical with respect to the center of the bar fixer (201). According to one or more embodiments, the inclined guide (240) structure described above may be provided to be symmetrical with respect to a center line passing through the center of the bar fixer (201) in the first direction (Z). In addition, for example, the inclined guide (240) structure described above may be provided to be symmetrical with respect to a center line passing through the center of the bar fixer (201) in the second direction (Y). As the slope guide (240) is provided to have a structure symmetrical with respect to the center of the bar fixer (201), when the work of joining the bar fixer (201) to the substrate bar (1220) is performed, the constraints on the direction of the bar fixer (201) with respect to the substrate bar (1220) can be reduced, and the manufacturer performing this work can have little consideration for the direction of the bar fixer (201), so that the efficiency of the work of joining the bar fixer (201) to the substrate bar (1220) can be improved. As a result, the manufacturing time and manufacturing cost can be reduced.

[0374] The bar fixer (201) can be detachably mounted on the mounting portion (15a). In other words, the bar fixer (201) can be provided so that it can be mounted on the mounting portion (15a), and at the same time, it can be provided so that it can be detached again while mounted on the mounting portion (15a). That is, the bar fixer (201) can be detached from the mounting portion (15a) by sliding away from the mounting portion (15a) while mounted on the mounting portion (15a).

[0375] By this structure, the substrate bar (1220) can be mounted on the bottom chassis (15) by sliding relative to the bottom chassis (15), and similarly, the light source substrate (1200) can be mounted on the bottom chassis (15) by sliding relative to the bottom chassis (15). In addition, by this structure, the substrate bar (1220) mounted on the bottom chassis (15) can be separated from the bottom chassis (15) by sliding in the opposite direction to the direction in which it moved when mounted.

[0376] In FIGS. 13 to 16, it is assumed that the substrate bar (1220) moves in the right direction (+Y direction) of the display device (1) with respect to the bottom chassis (15) and is mounted on the bottom chassis (15), but this is not limited thereto. According to one or more embodiments, the substrate bar (1220) may move in the left direction (-Y direction) with respect to the bottom chassis (15) and be mounted on the bottom chassis (15). Alternatively, for example, the substrate bar (1220) may move in the vertical direction (Z direction) with respect to the bottom chassis (15) and be mounted on the bottom chassis (15).

[0377] FIG. 17 is a drawing illustrating a light source substrate of a display device according to one or more embodiments before being mounted on a bottom chassis. FIG. 18 is a drawing illustrating a light source substrate of a display device according to one or more embodiments after being mounted on a bottom chassis.

[0378] Referring to FIGS. 17 and 18, a coupling portion (1225) included in a display device (1) according to one or more embodiments may include a substrate hole (1225h).

[0379] The substrate hole (1225h) can be formed in a shape in which the substrate bar (1220) penetrates in the front-back direction (X direction).

[0380] According to one or more embodiments, the coupling portion (1225) may be formed at a position corresponding to the mounting portion (15a) of the bottom chassis (15). Specifically, the coupling portion (1225) may be formed to be positioned corresponding to the mounting portion (15a) when the bar fixer (201) is mounted on the mounting portion (15a) and the substrate bar (1220) is fixed to the bottom chassis (15). In other words, based on the bar fixer (201) being mounted on the mounting portion (15a), the position of the coupling portion (1225) may correspond to the position of the mounting portion (15a) (see FIG. 18). Conversely, when the bar fixer (201) is separated from the mounting portion (15a), the positions of the coupling portion (1225) and the mounting portion (15a) may be misaligned (see FIG. 17).

[0381] According to one or more embodiments, when the bar fixer (201) is mounted on the mounting portion (15a) and the substrate bar (1220) is fixed to the bottom chassis (15), the mounting portion (15a) may be positioned at least partially parallel to the substrate hole (1225h) at the rear (-X direction) of the substrate hole (1225h) (see FIG. 18).

[0382] According to one or more embodiments, even when the bar fixer (201) is located at a position separate from the mounting portion (15a), a portion of the mounting portion (15a) may be positioned parallel to the substrate hole (1225h) at the rear (-X direction) of the substrate hole (1225h) (see FIG. 17).

[0383] As the substrate hole (1225h) is formed at a position corresponding to the mounting portion (15a) of the bottom chassis (15), in the process of mounting the bar fixer (201) to the mounting portion (15a) to mount the substrate bar (1220) to the bottom chassis (15), the manufacturer performing the process can confirm the position of the mounting portion (15a) at the rear of the substrate bar (1220) through the substrate hole (1225h). As a result, the manufacturer can more easily perform the task of mounting the bar fixer (201) to the mounting portion (15a).

[0384] According to one or more embodiments, at least a portion of the bar fixer (201) may be arranged parallel to the substrate hole (1225h) at the rear (-X direction) of the substrate hole (1225h). This allows the manufacturer to more easily perform the task of mounting the bar fixer (201) to the mounting portion (15a).

[0385] Meanwhile, as illustrated in FIGS. 10 to 14, the bar fixer (201) may further include a fixed body hole (210h) formed in the fixed body (210). The fixed body hole (210h) may be formed so that the fixed body (210) penetrates in the front-back direction (X). According to one or more embodiments, the fixed body hole (210h) may be formed in the cover portion (211) of the fixed body (210).

[0386] In the process of mounting the substrate bar (1220) to the bottom chassis (15), when looking at the bottom chassis (15) from the rear (-X direction), the fixed body (210) can move in a direction that covers the mounting portion (15a). At this time, a part of the mounting portion (15a) covered by the fixed body (210) can be recognized through the fixed body hole (210h), and the manufacturer can estimate the position of the mounting portion (15a) through the fixed body hole (210h). Accordingly, the manufacturer can more easily perform the task of mounting the bar fixer (201) to the mounting portion (15a).

[0387] According to one or more embodiments, the bar fixer (201) may include a plurality of fixed body holes (210h). According to one or more embodiments, the bar fixer (201) may include a pair of fixed body holes (210h), as illustrated in FIGS. 10 to 14 .

[0388] According to one or more embodiments, the pair of fixed body holes (210h) may be arranged symmetrically with respect to the center of the bar fixer (201). According to one or more embodiments, the pair of fixed body holes (210h) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in a direction parallel to the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15). According to one or more embodiments illustrated in FIG. 10, the pair of fixed body holes (210h) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in the second direction (Y).

[0389] Additionally, according to one or more embodiments, the pair of fixed body holes (210h) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in a direction orthogonal to the direction in which the bar fixer (201) is mounted to the mounting portion (15a) of the bottom chassis (15). According to one or more embodiments illustrated in FIG. 10, the pair of fixed body holes (210h) may be arranged symmetrically with respect to a center line passing through the center of the bar fixer (201) in the first direction (Z).

[0390] As a pair of fixed body holes (210h) are provided in this way to have a symmetrical structure based on the center of the bar fixer (201), when manufacturing to couple the bar fixer (201) to the substrate bar (1220) is performed, the constraints on the direction of the bar fixer (201) with respect to the substrate bar (1220) can be reduced, and the manufacturer performing this work can have little consideration for the direction of the bar fixer (201), so that the efficiency of the work to couple the bar fixer (201) to the substrate bar (1220) can be improved. As a result, the manufacturing time and manufacturing cost can be reduced.

[0391] FIG. 19 is an enlarged view of a portion of a light source substrate and a bottom chassis of a display device according to one or more embodiments.

[0392] Referring to FIG. 19, a display device (1) according to one or more embodiments may include a body fixer (202). The body fixer (202) may be configured to secure a substrate body (1210) to a bottom chassis (15). The body fixer (202) may be provided on the substrate body (1210).

[0393] The body fixer (202) may be a type of substrate fixer (200) that mounts the light source substrate (1200) to the bottom chassis (15). A plurality of substrate fixers (200) may include the body fixer (202). That is, a portion of the plurality of substrate fixers (200) (i.e., the body fixer (202)) may be provided to fix the substrate body (1210) to the bottom chassis (15).

[0394] One substrate body (1210) can be secured to the bottom chassis (15) by one or more body fixers (202). One substrate body (1210) can be mounted to the bottom chassis (15) by one or more body fixers (202).

[0395] The bottom chassis (15) may include a mounting portion (15a) on which a body fixer (202) is mounted. The body fixer (202) may be mounted on the mounting portion (15a) to secure the substrate body (1210) to the bottom chassis (15). According to one or more embodiments, one body fixer (202) may be mounted on one mounting portion (15a).

[0396] According to one or more embodiments, the mounting portion (15a) on which the body fixer (202) is mounted may have characteristics corresponding to the mounting portion (15a) on which the bar fixer (201) described above is mounted. That is, the bottom chassis (15) may include a plurality of mounting portions (15a) provided to mount a plurality of substrate fixers (200), such as the bar fixer (201) and the body fixer (202). According to one or more embodiments, one substrate fixer (200) may be mounted on one mounting portion (15a).

[0397] The substrate body (1210) may include a coupling portion (1215). The substrate body (1210) may be coupled to the bottom chassis (15) via the coupling portion (1215). A body fixer (202) may be disposed at the coupling portion (1215) of the substrate body (1210). To be distinguished from the coupling portion (bar coupling portion) (1225) of the substrate bar (1220) described above, the coupling portion (1215) of the substrate body (1210) may also be referred to as a body coupling portion (1215).

[0398] According to one or more embodiments, the coupling portion (1215) of the substrate body (1210) may have a shape corresponding to the coupling portion (1225) of the substrate bar (1220). According to one or more embodiments, the coupling portion (1215) of the substrate body (1210) may include a substrate hole (1215h). The substrate hole (1215h) may have a feature corresponding to the substrate hole (1225h) provided in the coupling portion (1215) of the substrate bar (1220).

[0399] According to one or more embodiments, one of the coupling portions (1215) provided on the substrate body (1210) may be arranged parallel to one of the coupling portions (1225) provided on the substrate bar (1220) in one direction. Specifically, as illustrated in FIG. 6, one of the coupling portions (1215) provided on the substrate body (1210) may be arranged parallel to one of the coupling portions (1225) provided on the substrate bar (1220) in a second direction (Y).

[0400] In response to this, one body fixer (202) among the plurality of body fixers (202) may be arranged parallel to one bar fixer (201) among the plurality of bar fixers (201) in one direction. Specifically, as illustrated in FIG. 6, one body fixer (202) among the plurality of body fixers (202) may be arranged parallel to one bar fixer (201) among the plurality of bar fixers (201) in a second direction (Y).

[0401] According to one or more embodiments, the substrate body (1210) may include a plurality of coupling portions (1215). According to one or more embodiments, the body fixer (202) may include a plurality of body fixers (202).

[0402] In detail, a body fixer (202) can be coupled to each of the coupling portions (1215) of the substrate body (1210). That is, the number of coupling portions (1215) can correspond to the number of body fixers (202).

[0403] According to one or more embodiments, a plurality of coupling portions (1215) provided on one substrate body (1210) may be arranged parallel to one another in one direction. Specifically, as illustrated in FIG. 6, a plurality of coupling portions (1215) provided on one substrate body (1210) may be arranged parallel to one another in a first direction (Z).

[0404] To correspond to this, a plurality of body fixers (202) arranged on one substrate body (1210) may be arranged parallel to one another in one direction. Specifically, as illustrated in FIG. 6, a plurality of body fixers (202) arranged on one substrate body (1210) may be arranged parallel to one another in the first direction (Z).

[0405] As illustrated in FIG. 6, for example, the number of the plurality of body fixers (201) may be provided to be less than or equal to the number of the plurality of bar fixers (202). Correspondingly, the number of the plurality of coupling portions (1215) provided on the substrate body (1210) may be provided to be less than or equal to the number of the plurality of coupling portions (1225) provided on the plurality of substrate bars (1220) connected to one substrate body (1210).

[0406] Each of the plurality of substrate bars (1220) needs to be more firmly fixed to the bottom chassis (15) due to its structure compared to the substrate body (1210), and furthermore, it may be preferable that each of the plurality of substrate bars (1220) be fixed to the bottom chassis (15) by a bar fixer (201). Accordingly, the number of the plurality of bar fixers (201) is provided to be greater than or equal to the number of the plurality of body fixers (202), so that each of the plurality of substrate bars (1220) can be stably fixed to the bottom chassis (15), while the number of the plurality of body fixers (202) is provided to be less than or equal to the number of the plurality of bar fixers (201), so that an unnecessarily large number of substrate fixers (200) are prevented from being arranged on the plurality of body fixers (202).

[0407] According to one or more embodiments, the body fixer (202) may have the same structure as the bar fixer (201) described with reference to FIGS. 10 to 18. A detailed description of the structure, such as the shape, of the body fixer (202) is omitted. However, the present invention is not limited thereto, and the body fixer (202) may have features, such as a shape, that are different from the shape of the bar fixer (201) described above.

[0408] As described above, the bar fixer (201) may be provided to slide relative to the mounting portion (15a) and be mounted on or detachable from the mounting portion (15a). Similarly, the body fixer (202) may be provided to slide relative to the mounting portion (15a) and be mounted on or detachable from the mounting portion (15a).

[0409] At this time, the bar fixer (201) and the body fixer (202) may be arranged to slide in the same direction with respect to the mounting portion (15a) and be mounted on the mounting portion (15a), or to slide in the same direction and be separated from the mounting portion (15a). The drawing illustrates one or more embodiments in which the bar fixer (201) and the body fixer (202) are mounted on the mounting portion (15a) as they move in the right direction (+Y direction) with respect to the mounting portion (15a), and are separated from the mounting portion (15a) as they move in the left direction (-Y direction), but the sliding movement direction of the bar fixer (201) and the body fixer (202) is not limited thereto.

[0410] By this configuration, the light source substrate (1200) including the substrate bar (1220) and the substrate body (1210) can be stably fixed to the bottom chassis (15).

[0411] A display device (1) according to one or more embodiments may include a display panel (20), a plurality of light sources (1100) arranged to irradiate light toward the display panel, a plurality of substrate bars (1220) on which the plurality of light sources are mounted, are spaced apart from each other along a first direction (Z) and extend in a second direction (Y) different from the first direction, a bottom chassis (15) configured to support the plurality of substrate bars, and a plurality of bar fixers (201) configured to fix the plurality of substrate bars to the bottom chassis. Each of the plurality of substrate bars (1220) may include a central extension portion (1221) extending in the second direction from the center of each of the plurality of substrate bars, and a coupling portion positioned at one side in the first direction with respect to one of the plurality of light sources mounted on each of the plurality of substrate bars. Each of the plurality of bar fixers (201) can be placed on the connecting portion (1225) formed on a corresponding substrate bar among the plurality of substrate bars.

[0412] The plurality of light sources (1100) mounted on each of the plurality of substrate bars may be arranged to be spaced apart from the central extension (1221) in the first direction.

[0413] The plurality of light sources may include a plurality of first-side light sources (1110) arranged on one side (+Z direction side) of the central extension portion in the first direction based on each of the plurality of substrate bars, and a plurality of second-side light sources (1120) arranged on the other side (-Z direction side) of the central extension portion in the first direction based on each of the plurality of substrate bars. Each of the plurality of substrate bars may include a power supply line (1230) configured to supply power to the plurality of light sources. The power supply line may include a first power supply line (1231) arranged along a position where the plurality of first-side light sources are arranged, and a second power supply line (1232) arranged along a position where the plurality of second-side light sources are arranged. The coupling portion (1225) may be arranged between the first power supply line (1231) and the second power supply line (1232) so as to avoid the power supply line.

[0414] Each of the plurality of substrate bars may further include a first protrusion (1222a) protruding in the first direction from one side of the central extension portion and on which some of the plurality of light sources are mounted, and a second protrusion (1222b) protruding in the first direction from the other side of the central extension portion opposite to the one side and on which some and other of the plurality of light sources are mounted. The connecting portion may be arranged parallel to either the shortest portion (1222aa) of the first protrusion in the first direction or the shortest portion (1222bb) of the second protrusion in the first direction in the first direction.

[0415] The above plurality of bar fixers (201) can be placed on the rear side (-X direction) of the plurality of substrate bars (1220) facing the bottom chassis (15).

[0416] Each of the plurality of bar fixers (201) may include a fixed body (210) that contacts the back surface opposite to the plurality of substrate bars of the bottom chassis.

[0417] The bottom chassis (15) may include a plurality of chassis holes (15b) formed to be penetrated by the plurality of bar fixers. The rear surface of the bottom chassis (15) may be in contact with the fixed body (210) located at the rear side with respect to the plurality of chassis holes. The front surface of the bottom chassis (15) may be in contact with one of the plurality of substrate bars located at the front side with respect to the plurality of chassis holes, on which the one bar fixer is provided.

[0418] The above bottom chassis may further include a plurality of mounting portions (15a) on which the plurality of bar fixers are mounted. Each of the plurality of mounting portions (15a) may extend from one side of an edge (15e) of each of the plurality of chassis holes toward the inner side of each of the plurality of chassis holes.

[0419] Each of the plurality of bar fixers may further include an extension portion (220) configured to extend from the fixed body toward the plurality of substrate bars and penetrate the plurality of chassis holes.

[0420] The bottom chassis may further include a plurality of mounting portions on which each of the plurality of bar fixers is mounted. Each of the plurality of fixed bodies (210) and each of the plurality of extension portions (220) may surround at least a portion of each of the plurality of mounting portions (15a).

[0421] Each of the plurality of fixed bodies may include a cover portion (211) configured to cover the rear surface of the bottom chassis, and an interference protrusion (212) configured to protrude from the cover portion toward the rear surface of the bottom chassis and to interfere with the bottom chassis.

[0422] The above bottom chassis may further include a plurality of mounting portions (15a) on which the plurality of bar fixers are mounted. Each of the plurality of connecting portions (1225) may include a substrate hole (1225h) formed at a position corresponding to the plurality of mounting portions.

[0423] The plurality of bar fixers (201) may be configured to be mounted on the bottom chassis by sliding in one direction. Each of the plurality of bar fixers (201) may include a fixed body (210) that contacts the rear surface of the bottom chassis at a position where it is mounted on the bottom chassis, and an inclined guide (240) that extends in a direction away from the rear surface of the bottom chassis as it moves in the one direction from the fixed body.

[0424] The display device (1) may further include a substrate body (1210) to which the plurality of substrate bars are connected and supported by the bottom chassis, and a body fixer (202) disposed on the substrate body and configured to fix the substrate body to the bottom chassis.

[0425] The above body fixer may include a plurality of body fixers. The number of the plurality of body fixers (202) may be less than or equal to the number of the plurality of bar fixers (201).

[0426] A display device (1) according to one or more embodiments of the present disclosure may include a display panel (20), a plurality of light sources (1100) configured to irradiate light toward the display panel, a light source substrate (1200) on which the plurality of light sources are mounted, a bottom chassis (15) configured to support the light source substrate, and a plurality of board fixers (200) configured to fix the light source substrate to the bottom chassis. The light source substrate may include a substrate body (1210), and a plurality of substrate bars (1220) spaced apart from each other in a first direction and extending in a second direction different from the first direction from the substrate body. At least some (201) of the plurality of substrate fixers (200) may be arranged at the center of each of the plurality of substrate bars in the first direction (Z), and may be arranged parallel to one of the plurality of light sources (1100) mounted on each of the plurality of substrate bars in the first direction (Z), and may be configured to fix the plurality of substrate bars (1220) to the bottom chassis (15).

[0427] Each of the plurality of substrate fixers (200) may include an extension (220) configured to extend from a back surface of the light source substrate facing the bottom chassis and penetrate the bottom chassis, and a fixing body (210) connected to the extension and in contact with a back surface of the bottom chassis opposite to the light source substrate.

[0428] At least some (201) of the plurality of substrate fixers may be positioned adjacent to an end of one of the plurality of substrate bars.

[0429] Among the plurality of substrate fixers, at least some of the substrate fixers and the other some (202) may be arranged on the substrate body and configured to fix the substrate body to the bottom chassis.

[0430] A display device (1) according to one or more embodiments of the present disclosure may include a plurality of light sources (1100), a plurality of substrate bars (1220) arranged along a first direction (Z) with each other and on which at least some of the plurality of light sources are mounted, a bottom chassis (15) provided to support the plurality of substrate bars, and a plurality of bar fixers (201) provided to fix the plurality of substrate bars to the bottom chassis. Each of the plurality of substrate bars (1220) may include a central extension portion (1221) extending along a second direction perpendicular to the first direction, a plurality of first protrusions (1222a) protruding upward in the first direction from the central extension portion, and a plurality of second protrusions (1222b) protruding downward in the first direction from the central extension portion. Each of the plurality of bar fixers (201) may be arranged in parallel with one of the plurality of first protrusions (1222a) or the plurality of second protrusions (1222b) in the first direction (Z) at the central extension of each of the plurality of substrate bars.

[0431] According to the invention, a display device includes a plurality of substrate fixers configured to fix a light source substrate to a bottom chassis, so that the light source substrate can be efficiently fixed to the bottom chassis.

[0432] According to the invention, a display device can include a plurality of substrate fixers that stably fix a light source substrate to a bottom chassis, thereby improving durability and performance of the product.

[0433] According to the invention, a display device includes a mounting structure that enables efficient mounting of a light source substrate to a bottom chassis, thereby improving manufacturing efficiency of the product and reducing manufacturing costs of the product.

[0434] According to the invention, a display device can include a mounting structure that enables efficient mounting and detachment of a light source substrate from a bottom chassis, thereby facilitating repair or replacement of components of the light source substrate.

[0435] According to the concept of the present disclosure, a light source substrate included in a display device is provided with a joint portion for jointing a bar fixer to a substrate bar, the joint portion being positioned on a central extension of the substrate bar and positioned on one side in the width direction with respect to one of a plurality of light sources mounted on the substrate bar. This can prevent the joint portion from interfering with a power supply line of the light source substrate.

[0436] While the present disclosure has been illustrated and described with reference to one or more embodiments, it will be understood that the above embodiments are illustrative and not limiting. It will be further understood by those skilled in the art that various changes in form and detail may be made without departing from the true spirit and scope of the present disclosure, including the appended claims and their equivalents. It will also be understood that any embodiment described herein can be used in conjunction with any other embodiment described herein.

Claims

1. Display panel; A plurality of light sources arranged to irradiate light toward the display panel; A plurality of substrate bars on which the plurality of light sources are mounted, spaced apart from each other along a first direction and extending in a second direction different from the first direction; a bottom chassis configured to support the plurality of substrate bars; and a plurality of bar fixers configured to secure the plurality of substrate bars to the bottom chassis; Each of the above plurality of substrate bars, a central extension extending in the second direction from the center of each of the plurality of substrate bars; and A coupling portion positioned on the central extension of each of the plurality of substrate bars and positioned on one side in the first direction with respect to one of the plurality of light sources mounted on each of the plurality of substrate bars; Each of the above multiple bar fixers, A display device arranged on the joint formed on each corresponding substrate bar among the plurality of substrate bars.

2. In paragraph 1, A display device in which the plurality of light sources mounted on each of the plurality of substrate bars are spaced apart from the central extension portion and in the first direction.

3. In paragraph 2, The above multiple light sources are, A plurality of first side light sources arranged on one side in the first direction based on the central extension portion of each of the plurality of substrate bars; and Including a plurality of second side light sources arranged on the other side in the first direction based on the central extension portion in each of the plurality of substrate bars; Each of said plurality of substrate bars includes a power supply line configured to supply power to said plurality of light sources, The above power supply line, A first power supply line arranged along the position where the plurality of first side light sources are arranged; and A second power supply line is disposed along the position where the plurality of second side light sources are arranged; A display device wherein the above-mentioned connecting portion is disposed between the first power supply line and the second power supply line.

4. In paragraph 1, Each of the above plurality of substrate bars, A first protrusion protruding in the first direction from one side of the central extension and on which some of the plurality of light sources are mounted; and It further includes a second protrusion that protrudes in the first direction from the other side opposite to the one side of the central extension, and on which some and other parts of the plurality of light sources are mounted; A display device in which the above-mentioned connecting portion is arranged parallel to either the shortest portion of the first protrusion in the first direction or the shortest portion of the second protrusion in the first direction in the first direction.

5. In paragraph 1, A display device in which the plurality of bar fixers are arranged on the rear side of the plurality of substrate bars facing the bottom chassis.

6. In paragraph 5, Each of the above multiple bar fixers, A display device including a fixed body in contact with a back surface opposite to the plurality of substrate bars of the bottom chassis.

7. In paragraph 6, The above bottom chassis includes a plurality of chassis holes formed to be penetrated by the plurality of bar fixers, The rear surface of the above bottom chassis is in contact with the fixed body located at the rear side with respect to the above plurality of chassis holes, A display device in which the front surface of the bottom chassis is in contact with one of the plurality of substrate bars positioned on the front side with respect to the plurality of chassis holes, and wherein the one bar fixer is provided.

8. In paragraph 7, The above bottom chassis further includes a plurality of mounting portions on which the plurality of bar fixers are mounted, A display device in which each of the plurality of mounting portions extends from one side of an edge of each of the plurality of chassis holes toward the inner side of each of the plurality of chassis holes.

9. In paragraph 7, A display device wherein each of the plurality of bar fixers further includes an extension portion configured to extend from the fixed body toward the plurality of substrate bars and penetrate through the plurality of chassis holes.

10. In paragraph 9, The above bottom chassis further includes a plurality of mounting portions on which each of the plurality of bar fixers is mounted, A display device in which each of the plurality of fixed bodies and each of the plurality of extensions surrounds at least a portion of each of the plurality of mounting portions.

11. In paragraph 6, Each of the above plurality of fixed bodies, A cover portion configured to cover the rear surface of the bottom chassis; and A display device including an interference protrusion that protrudes from the cover portion toward the rear surface of the bottom chassis and is configured to interfere with the bottom chassis.

12. In paragraph 6, The above bottom chassis further includes a plurality of mounting portions on which the plurality of bar fixers are mounted, A display device in which each of the plurality of connecting parts includes a substrate hole formed at a position corresponding to the positions of the plurality of mounting parts.

13. In paragraph 1, The above plurality of bar fixers are configured to slide in one direction and be mounted on the bottom chassis, Each of the above multiple bar fixers, A fixed body that is in contact with the back surface of the bottom chassis at a position mounted on the bottom chassis, A display device including an inclined guide extending in a direction away from the rear surface of the bottom chassis as it faces the one direction from the fixed body.

14. In paragraph 1, A substrate body in which the plurality of substrate bars are connected and supported by the bottom chassis; and A display device further comprising a body fixer disposed on the substrate body and configured to fix the substrate body to the bottom chassis.

15. In paragraph 14, The above body fixer comprises a plurality of body fixers, A display device wherein the number of the plurality of body fixers is less than or equal to the number of the plurality of bar fixers.

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