Display apparatus

Abstract

A display device comprises: light sources; and substrate bars on which the light sources are mounted, wherein the substrate bars are spaced apart from each other along a first direction. Each of the substrate bars includes: a central extension part extending in a second direction; first protrusion parts which protrude from one side of the central extension part in the first direction toward the outside of the central extension part and are arranged along the second direction, and in which a first side light source among the light sources is disposed; first recess parts, each disposed between a pair of adjacent first protrusion parts; second protrusion parts which protrude from the other side opposite to the one side of the central extension part in the first direction toward the outside of the central extension part and are arranged along the second direction, and in which a second side light source among the light sources is disposed; and second recess parts, each disposed between a pair of adjacent second protrusion parts.

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, and is used in various fields such as homes and businesses.

[0003] Display devices include monitor devices connected to personal computers or server computers, portable computer devices, navigation terminal devices, general television devices, Internet Protocol television (IPTV) devices, portable terminal devices such as smart phones, tablet PCs, personal digital assistants (PDAs), or cellular phones, various display devices used to play images such as advertisements or movies in industrial settings, and 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 embodiments of the present disclosure, a display device having an improved structure is provided so as to improve uniformity of luminance.

[0007] According to embodiments of the present disclosure, a display device having an improved structure is provided so as to reduce the cost or manufacturing cost of the product.

[0008] According to embodiments of the present disclosure, a display device having an improved structure that can simplify a manufacturing process is provided.

[0009] The technical problems solved and the solutions to be achieved in the embodiments of the present disclosure are not limited to the technical problems and solutions mentioned above, and other technical problems that are not mentioned and are solved and achieved will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0010] According to embodiments 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, and a plurality of substrate bars on which the plurality of light sources are mounted, the plurality of substrate bars being spaced apart from each other along a first direction, which is a width direction of the plurality of substrate bars. Each of the plurality of substrate bars may include a central extension portion extending in a second direction different from the first direction, a plurality of first protrusions protruding from one side of the central extension portion in the first direction toward the outside of the central extension portion, arranged along the second direction with respect to each other and on which a first light source among the plurality of light sources is disposed, a plurality of first recessed portions each disposed between a pair of adjacent first protrusions among the plurality of first protrusions, a plurality of second protrusions protruding from the other side of the central extension portion opposite to the one side in the first direction toward the outside of the central extension portion, arranged along the second direction with respect to each other and on which a second light source among the plurality of light sources is disposed, and a plurality of second recessed portions each disposed between a pair of adjacent second protrusions among the plurality of second protrusions. A shape of an edge of each of the plurality of first recessed portions may be different from a shape of an edge of each of the plurality of second protrusions. A shape of an edge of each of the plurality of second recessed portions may be different from a shape of an edge of each of the plurality of first protrusions.

[0011] A display device according to one embodiment of the present disclosure may include a plurality of light sources, and a plurality of substrate bars on which the plurality of light sources are mounted and arranged to be spaced apart from each other along a first direction, and each of the substrate bars extending along a second direction different from the first direction. Each of the plurality of substrate bars may include a central extension extending along the second direction, a plurality of first protrusions each protruding from one side of the central extension in the first direction toward the outside of the central extension and arranged along the second direction, a plurality of second protrusions each protruding from the other side of the central extension in the first direction toward the outside of the central extension and arranged along the second direction, a plurality of first recessed portions each formed between a pair of adjacent first protrusions among the plurality of first protrusions and having edges having different curvatures at points corresponding to each other in the first direction from edges of each of the plurality of second protrusions, and a plurality of second recessed portions each formed between a pair of adjacent second protrusions among the plurality of second protrusions and having edges having different curvatures at points corresponding to each other in the first direction from edges of each of the plurality of first protrusions.

[0012] A display device according to one embodiment of the present disclosure may include a plurality of light sources, and a plurality of substrate bars on which at least a portion of the plurality of light sources are mounted, the plurality of substrate bars being spaced apart from each other along a first direction, which is a width direction of each of the plurality of light sources, and each extending in a second direction different from the first direction. Each of the plurality of substrate bars may include a plurality of first protrusions formed on one side of each of the plurality of substrate bars in the first direction, arranged along the second direction, and on which some of the plurality of light sources are mounted, a plurality of first recesses each formed between a pair of first protrusions that are adjacent to each other among the plurality of first protrusions, a plurality of second protrusions formed on the other side of each of the plurality of substrate bars in the first direction, arranged along the second direction, and on which other portions of the plurality of light sources are mounted, and a plurality of second recesses each formed between a pair of second protrusions that are adjacent to each other among the plurality of second protrusions. When a region defined by one first recessed portion among the plurality of first recessed portions and a pair of first protrusions adjacent to the one first recessed portion among the plurality of first protrusions is referred to as a first recessed portion, and a region defined by one second recessed portion among the plurality of second recessed portions and a pair of second protrusions adjacent to the one second recessed portion among the plurality of second protrusions is referred to as a second recessed portion, the size of the first recessed portion may be different from the size of the first protrusion of the plurality of first protrusions. The size of the second recessed portion may be different from the size of the second protrusion of the plurality of second protrusions.

[0013] FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.

[0014] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0015] FIG. 3 is a cross-sectional view illustrating a liquid crystal panel of a display device according to one embodiment of the present disclosure.

[0016] FIG. 4 is an enlarged view of a light source and a reflective sheet of a display device according to one embodiment of the present disclosure.

[0017] FIG. 5 is a drawing illustrating a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0018] 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 embodiment of the present disclosure.

[0019] FIG. 7 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0020] FIG. 8 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0021] FIG. 9 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0022] FIG. 10 is a diagram showing experimental results when the pitch ratio between a plurality of light sources on a light source substrate of a display device is outside the range of one embodiment of the present disclosure.

[0023] FIG. 11 is a diagram showing experimental results when the pitch ratio between a plurality of light sources on a light source substrate of a display device is within the range of one embodiment of the present disclosure.

[0024] FIG. 12 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0025] FIG. 13 is a drawing illustrating a state in which a light source substrate on which a driving element is mounted and a reflective sheet are combined in a display device according to one embodiment of the present disclosure.

[0026] FIG. 14 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0027] FIG. 15 is an enlarged view of a portion of the back surface of a light source module of a display device according to one embodiment of the present disclosure.

[0028] FIG. 16 is a drawing illustrating a step of preparing a substrate material in a method for manufacturing a light source substrate used in a display device according to one embodiment of the present disclosure.

[0029] FIG. 17 is a drawing illustrating a step of processing a light source substrate used in a display device according to one embodiment of the present disclosure.

[0030] FIG. 18 is a drawing showing a state before separating a pair of light source substrates used in a display device according to one embodiment of the present disclosure.

[0031] FIG. 19 is a drawing showing a pair of light source substrates used in a display device according to one embodiment of the present disclosure after being separated.

[0032] FIG. 20 is a drawing illustrating a step of preparing a material for a substrate in a method for manufacturing a light source substrate of a display device according to one embodiment of the present disclosure.

[0033] FIG. 21 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0034] FIG. 22 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0035] FIG. 23 is a diagram illustrating a configuration of a display device according to another embodiment of the present disclosure.

[0036] The various non-limiting embodiments described in this disclosure and the terminology used are not intended to limit the embodiments of this disclosure to a specific form, and it should be understood that this disclosure includes various modifications, equivalents, and / or substitutes for the corresponding embodiments.

[0037] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0038] 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.

[0039] 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.

[0040] Additionally, the terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," and "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0041] In addition, the terminology used herein is for the purpose of describing exemplary embodiments and is not intended to limit and / or restrict the present disclosure. 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 preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0042] 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 disclosure, 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Hereinafter, non-limiting exemplary embodiments according to the present disclosure are described in detail with reference to the attached drawings.

[0048] FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.

[0049] Referring to FIG. 1, a display device (1) according to one embodiment of the present disclosure is a device that processes an image signal received from the outside and can visually display the processed image. Although FIG. 1 illustrates a case where the display device (1) is a television (TV), the embodiments of the present disclosure are not limited thereto. For example, 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.

[0050] 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 outdoors is not necessarily limited to outdoors, and the display device (1) according to one embodiment of the present disclosure may be installed in any indoor location where a large number of people may enter and exit, such as a subway station, shopping mall, movie theater, company, or store.

[0051] In FIG. 1, the display device (1) is described as a flat display device with a flat screen, but embodiments of the present disclosure are not limited thereto. Accordingly, a display device according to an embodiment of the present disclosure may be a curved display device or a bendable or flexible display device whose flat and curved states can be varied. In addition, the configuration of an embodiment of the present disclosure can be applied to display devices of various shapes regardless of the screen size or ratio of the display device.

[0052] The 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. For example, 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.

[0053] The display device (1) can display an image corresponding to video data and output a sound corresponding to audio data. For example, 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.

[0054] As illustrated in FIG. 1, the display device (1) may include a main body (11) and a screen (12) that displays an image (I).

[0055] 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 within a wall. For example, the display device (1) can include a support leg (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.

[0056] 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).

[0057] 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). For example, 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.

[0058] A plurality of pixels (P) may be formed on the screen (12). An image (I) displayed on the screen (12) may be formed by light emitted from each of the plurality of pixels (P). For example, an image (I) may be formed on the screen (12) by combining the light emitted from the plurality of pixels (P) like a mosaic.

[0059] Each of the plurality of pixels (P) can emit light of different brightness and different colors. Specifically, each of the plurality of pixels (P) can include sub-pixels, and the sub-pixels can include 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. For example, 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.

[0060] 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.

[0061] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0062] 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 embodiment of the present disclosure.

[0063] For example, 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).

[0064] For example, the display panel (20) may have a roughly 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 embodiments of the present disclosure are 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.

[0065] 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, and can be provided in any ratio.

[0066] In a display device (1) according to one embodiment of the present disclosure, the display panel (20) may be configured as a panel of a light-emitting display type such as a liquid crystal display (LCD).

[0067] 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) (hereinafter referred to as a 'driver IC (30)') for processing digital image data and outputting an analog image signal may be provided.

[0068] 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.

[0069] The driver IC (30) can receive image data and power from the control assembly (50) and / or the power assembly (60) through the cable (20a), and transmit image data and driving current to the display panel (20) through the cable (20a).

[0070] 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, the embodiments of the present disclosure are not limited thereto, and the driver IC (30) may be placed on the display panel (20).

[0071] A detailed description of the structure of the display panel (20) will be described later.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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, for example, FIG. 4).

[0076] A detailed description of the light source module (1000) will be described later.

[0077] 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.

[0078] For example, the reflective sheet (120) can be attached to the front of the light source module (1000). Specifically, the reflective sheet (120) can be attached to the front of the light source substrate (1200).

[0079] For example, 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 not only toward the diffusion plate (130) to be described later, but also toward the reflective sheet (120) from the light source module (1000), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffusion plate (130).

[0080] Alternatively, some of the light emitted from the light source module (1000) may be reflected from the surfaces of the diffuser plate (130), the optical sheet (140), etc. as it passes through various objects such as the diffuser plate (130) and the optical sheet (140). The reflective sheet (120) may reflect the reflected light forward again as described above.

[0081] 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.

[0082] 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 emitted light. The optical sheet (140) may be provided to refract and scatter light emitted from the front surface of the diffusion plate (130). For example, 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.

[0083] 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).

[0084] For example, 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).

[0085] For example, the power assembly (60) can supply power to the display panel (20) and the backlight unit (100) so that the backlight unit (100) outputs surface light and the display panel (20) blocks or passes light from the backlight unit (100).

[0086] The control assembly (50) and the power assembly (60) may be implemented as printed circuit boards and various circuits mounted on the printed circuit board. For example, 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.

[0087] 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).

[0088] For example, the display case may support a display panel (20). For example, the display case may support a backlight unit (100). For example, the display case may support a control assembly (50). For example, the display case may support a power assembly (60).

[0089] For example, the display device (1) may include a top chassis (13). The top chassis (13) may be provided to support the front or side of the display panel (20). For example, the top chassis (13) may be provided in the shape of a roughly square frame.

[0090] 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).

[0091] For example, 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).

[0092] 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 (1100) to the outside. For example, the bottom chassis (15) may be formed of a metal material such as aluminum or stainless steel (SUS), or a plastic material such as acrylonitrile butadiene styrene (ABS).

[0093] For example, the display device (1) may include a middle mold (14). The middle mold (14) may be positioned between the top chassis (13) and the bottom chassis (15). For example, the middle mold (14) may support at least some components of the backlight unit (100).

[0094] For example, the display device (1) may include a rear cover (16). The rear cover (16) is positioned 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.).

[0095] Meanwhile, unlike as shown in FIG. 2, the display case of the display device (1) according to one embodiment of the present disclosure may not include some of the components of the top chassis, middle mold, bottom chassis, and rear cover.

[0096] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example for explaining the display device according to one embodiment of the present disclosure, and the embodiments of the present disclosure are not limited thereto. The display device according to one embodiment of the present disclosure may be provided to include various configurations for performing the function of providing an image through a screen.

[0097] FIG. 3 is a cross-sectional view illustrating a liquid crystal panel of a display device according to one embodiment of the present disclosure.

[0098] Referring to FIG. 3, a display panel (20) included in a display device (1) according to one embodiment of the present disclosure is 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).

[0099] 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).

[0100] For example, 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).

[0101] 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 transparent substrate (22) and the second transparent substrate (28) can be made of reinforced glass or transparent resin.

[0102] 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).

[0103] The first polarizing film (21) and the second polarizing film (29) can each transmit specific light and block other light. For example, 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).

[0104] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0105] 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.

[0106] 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).

[0107] 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.

[0108] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can transmit light incident from the outside. For example, 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).

[0109] The thin film transistor (24) can pass or block current flowing through the pixel electrode (23). For example, 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 (open).

[0110] 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.

[0111] 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).

[0112] 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).

[0113] In addition, liquid crystals can exhibit optical properties depending on changes in the electric field. For example, 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 an alignment layer (not shown). 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).

[0114] 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 embodiment of the present disclosure may have, and the embodiments of the present disclosure are not limited thereto.

[0115] FIG. 4 is an enlarged view of a light source and a reflective sheet of a display device according to one embodiment of the present disclosure.

[0116] 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).

[0117] 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).

[0118] 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. For example, the light source (1100) may include a light emitting diode (LED).

[0119] 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.

[0120] 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).

[0121] 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.

[0122] 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).

[0123] The reflective sheet (120) can reflect light emitted from the light source (1100) toward the reflective sheet (120) toward the diffuser plate (130).

[0124] 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.

[0125] Below, the detailed structure of the light source (1100) and the light source substrate (1200) is described as an example.

[0126] 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.

[0127] The light emitting diode (1101) may be configured to convert electrical energy into light energy. The light emitting diode (1101) may emit light having a maximum intensity at a predetermined wavelength based on the power supplied. For example, the light emitting diode (1101) may emit blue light having a peak value at a wavelength representing blue (e.g., a wavelength between 430 nm and 495 nm).

[0128] For example, a multilayer reflective structure in which a plurality of insulating films having different refractive indices are alternately laminated may be provided on the front surface of a light-emitting diode (1101). For example, such a multilayer reflective structure may be configured as a distributed Bragg reflector (DBR).

[0129] For example, 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.

[0130] 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.

[0131] 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). As an example, the power supply line (1230) may be configured to supply power to a light emitting diode (1101), which may be a flip-chip type light emitting diode.

[0132] For example, the light source substrate (1200) can be formed by alternately stacking a non-conductive insulation layer and a conductive conduction layer.

[0133] 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).

[0134] The dielectric of the insulating layer of the light source substrate (1200) can insulate between lines or patterns of the conductive layer. The insulating layer can be composed of a dielectric for electrical insulation, such as FR-4.

[0135] For example, 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. For example, the protection layer of the light source substrate (1200) may include a photo solder resist (PSR).

[0136] 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.

[0137] For example, 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).

[0138] For example, a window may be formed in the protective layer of the light source substrate (1200) so that a portion of the power supply line (1230) is 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).

[0139] For example, 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).

[0140] 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.

[0141] 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.

[0142] The optical dome (1102) may be composed of silicone or epoxy resin. For example, 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 hardened to form the optical dome (1102).

[0143] 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.

[0144] At this time, for example, the dome-shaped optical dome (1102) can refract light like a lens. For example, light emitted from a light-emitting diode (1101) can be dispersed by being refracted by the optical dome (1102).

[0145] 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 the structure that the light source module of the display device according to one embodiment of the present disclosure may have, and the embodiments of the present disclosure are not limited thereto.

[0146] FIG. 5 is a drawing illustrating a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0147] Referring to FIG. 5, a display device (1) according to one embodiment of the present disclosure may include a plurality of light source modules (1000).

[0148] A plurality of light source modules (1000) may be arranged in front (+X direction) of the bottom chassis (15). For example, 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).

[0149] For example, a 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.

[0150] For example, 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 symmetrically with respect to at least one line extending in the first direction (Z direction) or the second direction (Y direction). 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 as to be rotated 180 degrees relative to each other with respect to the X axis. According to this arrangement, a plurality of light source modules (1000) can be arranged symmetrically left and right with respect to the horizontal center of the display device (1), and brightness on both sides with respect to the horizontal center of the display device (1) can be provided uniformly.

[0151] 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.

[0152] However, the embodiments of the present disclosure are not limited thereto, and at least some of the plurality of light source modules (1000) may be formed to have different shapes.

[0153] Although FIG. 5 illustrates an example in which a 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 the number illustrated in FIG. 5. For example, 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).

[0154] Below, the structure of one light source module (1000) among the plurality of light source modules (1000) will be described in detail. In one embodiment, the structure of one light source module (1000) described below can be applied to each of the plurality of light source modules (1000).

[0155] 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 embodiment of the present disclosure.

[0156] Referring to FIG. 6, a light source module (1000) of a display device (1) according to one embodiment of the present disclosure may include a plurality of substrate bars (1220).

[0157] 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.

[0158] 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).

[0159] 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.

[0160] 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 direction). For example, the first direction (Z direction) 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.

[0161] Each of the plurality of substrate bars (1220) may be formed to have approximately a bar shape. Specifically, each of the plurality of substrate bars (1220) may have a width in a first direction (Z direction) and may extend long in a second direction (Y direction) different from the first direction (Z direction). That is, each of the plurality of substrate bars (1220) may have a shape in which a length in the second direction (Y direction) is longer than a width in the first direction (Z direction).

[0162] For example, 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). For example, 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).

[0163] For example, 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). For example, 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).

[0164] The direction in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other may be parallel to the respective width directions. In other words, the plurality of substrate bars (1220) may be arranged to be spaced apart from each other along the first direction (Z direction), which is the respective width direction.

[0165] 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 (e.g., a second direction (Y direction)) orthogonal to the direction in which the plurality of substrate bars (1220) are spaced apart from each other (e.g., a first direction (Z direction)). That is, the first direction and the second direction described above may be directions that are orthogonal to each other.

[0166] 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.

[0167] For example, a plurality of substrate bars (1220) may be arranged so that the distances spaced apart from each other in the first direction (Z direction) 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 direction) may all be approximately the same. As a result, the uniformity of the luminance of the display device (1) may be improved.

[0168] For example, the plurality of substrate bars (1220) may be formed to have shapes that correspond to each other. For example, the plurality of substrate bars (1220) may have widths that correspond to each other in the first direction (Z direction). For example, the plurality of substrate bars (1220) may have lengths that correspond to each other extending in the second direction (Y direction). For example, the plurality of substrate bars (1220) may be formed to have sizes that correspond to each other.

[0169] For example, 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.

[0170] A reflective sheet (120) may be attached to the front surface of each of the plurality of substrate bars (1220).

[0171] 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.

[0172] 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). For example, the plurality of substrate bars (1220) may be connected to one side of the substrate body (1210).

[0173] A plurality of substrate bars (1220) may extend from the substrate body (1210). For example, each of the plurality of substrate bars (1220) may extend in a second direction (Y direction) from the substrate body (1210). For example, each of the plurality of substrate bars (1220) may extend from one side of the substrate body (1210) in the second direction (Y direction).

[0174] For example, the substrate body (1210) may extend along a first direction (Z direction). For example, the substrate body (1210) may have a shape in which a length in the first direction (Z direction) is longer than a width in the second direction (Y direction). 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. In addition, 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 direction), which is the width direction of the substrate body (1210) (i.e., the direction in which the length is relatively short).

[0175] For example, 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, the 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), the plurality of substrate bars (1220) connected to the substrate body (1210) can be more stably supported by the substrate body (1210).

[0176] For example, 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).

[0177] 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.

[0178] A reflective sheet (120) may be attached to the front surface of the substrate body (1210). For example, 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 embodiments of the present disclosure are 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).

[0179] 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).

[0180] For example, 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).

[0181] As described above, a reflective sheet (120) may be attached to the front surface of the substrate body (1210). Accordingly, 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 embodiment of the present disclosure, since the connector (1300) is mounted on the back surface of the substrate body (1210), deterioration of the uniformity of the brightness of the display device (1) can be prevented.

[0182] For example, 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 a printed circuit board that includes the substrate body (1210) and the plurality of substrate bars (1220) and is an integral light source substrate. However, in contrast to this, the substrate body (1210) and the plurality of substrate bars (1220) may be connected through a process of assembling each other as separate parts that are not formed integrally with each other (see FIG. 23).

[0183] The structure of the light source module (1000), such as the substrate body (1210) and substrate bar (1220) described above with reference to FIG. 6 is only an example, and the embodiments of the present disclosure are not limited thereto.

[0184] 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 the present invention is not limited thereto, and for example, the plurality of substrate bars (1220) may extend in the left direction (-Y direction) from the substrate body (1210).

[0185] In addition, 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, and for example, the substrate body (1210) may extend in the horizontal direction (Y direction).

[0186] In addition, although FIG. 6 illustrates an embodiment 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).

[0187] Additionally, according to embodiments, 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 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).

[0188] However, for convenience of explanation, an exemplary embodiment will be described below 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).

[0189] FIG. 7 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure. FIG. 8 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0190] Referring to FIGS. 7 and 8, the structure of one substrate bar (1220) among the plurality of substrate bars (1220) described with reference to FIG. 6 will be described in detail. The structure of the substrate bar (1220) illustrated in FIGS. 7 and 8 can be applied to correspond to the structure of each of the plurality of substrate bars (1220).

[0191] Referring to FIGS. 7 and 8, a substrate bar (1220) of a display device (1) according to one embodiment of the present disclosure may include a central extension portion (1221) extending in one direction, and a protrusion portion (e.g., a first protrusion portion (1222a), a second protrusion portion (1222b)) protruding from the central extension portion (1221). The central extension portion (1221), the first protrusion portion (1222a), and the second protrusion portion (1222b) may each constitute a portion of the substrate bar (1220) and a portion of the light source substrate (1200).

[0192] 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).

[0193] 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).

[0194] For example, as illustrated in FIGS. 7 and 8, the central extension (1221) may include an area having a roughly rectangular bar shape.

[0195] The substrate bar (1220) may include a plurality of first protrusions (1222a) protruding from one side of the central extension (1221). Each of the plurality of first protrusions (1222a) may protrude from one side of the central extension (1221) in a first direction (Z direction). Each of the plurality of first protrusions (1222a) may protrude from one side of the central extension (1221) toward the outside of the central extension (1221). Each of the plurality of first protrusions (1222a) may extend from the central extension (1221) in the first direction (Z direction). For example, each of the plurality of first protrusions (1222a) may extend upward from an upper side of the central extension (1221).

[0196] For example, the first protrusion (1222a) can be formed integrally with the central extension (1221).

[0197] A plurality of first protrusions (1222a) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first protrusions (1222a) may be arranged such that their positions in the first direction (Z direction) (i.e., the vertical height of the display device (1)) correspond to each other.

[0198] For example, a plurality of first protrusions (1222a) may be arranged at equal intervals along the second direction (Y direction).

[0199] For example, the plurality of first protrusions (1222a) may be formed to have shapes that correspond to each other (for example, they may have the same shape). For example, the lengths of each of the plurality of first protrusions (1222a) that protrude in the first direction (Z direction) from the central extension (1221) may correspond to each other.

[0200] 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). For example, one first-side light source (1110) may be mounted on one first protrusion (1222a), but embodiments of the present disclosure are not limited thereto.

[0201] 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 FIGS. 7 and 8, the plurality of first side light sources (1110) may be arranged to be deflected upward from the central extension (1221).

[0202] A plurality of first-side light sources (1110) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first-side light sources (1110) may be arranged such that their positions in the first direction (Z direction) correspond to each other.

[0203] For example, a plurality of first side light sources (1110) can be arranged at equal intervals along the second direction (Y direction).

[0204] The substrate bar (1220) may include a plurality of second protrusions (1222b) protruding from the other side of the central extension (1221). The plurality of second protrusions (1222b) may each 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 here means a side different from one side of the central extension (1221) from which the first protrusions (1222a) protrude. For example, the plurality of second protrusions (1222b) may protrude in a direction opposite to the protrusion direction of the plurality of first protrusions (1222a) from the other side of the central extension (1221) opposite to one side of the central extension (1221) from which the plurality of first protrusions (1222a) protrude. Each of the plurality of first protrusions (1222a) can protrude from the other side of the central extension (1221) toward the outside of the central extension (1221).

[0205] Each of the plurality of second protrusions (1222b) may extend in the first direction (Z direction) from the central extension (1221). For example, each of the plurality of second protrusions (1222b) may extend downward from the lower side of the central extension (1221).

[0206] For example, the second protrusion (1222b) may be formed integrally with the central extension (1221).

[0207] A plurality of second protrusions (1222b) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second protrusions (1222b) may be arranged such that their positions in the first direction (Z direction) (i.e., the vertical height of the display device (1)) correspond to each other.

[0208] For example, a plurality of second protrusions (1222b) may be arranged at equal intervals along the second direction (Y direction).

[0209] For example, the plurality of second protrusions (1222b) may be formed to have shapes that correspond to each other (for example, they may have the same shape). For example, the lengths of each of the plurality of second protrusions (1222b) that protrude in the first direction (Z direction) from the central extension (1221) may correspond to each other.

[0210] For example, the length of each of the plurality of first protrusions (1222a) protruding from the central extension (1221) and the length of each of the plurality of second protrusions (1222b) protruding from the central extension (1221) may be approximately equal to each other.

[0211] 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). For example, one second-side light source (1120) may be mounted on one second protrusion (1222b), but is not limited thereto.

[0212] 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 FIGS. 7 and 8, the plurality of second side light sources (1120) may be arranged to be deflected downward from the central extension (1221).

[0213] A plurality of second-side light sources (1120) may be arranged relative to each other along the second direction (Y direction). For example, the plurality of second-side light sources may be arranged so that their positions in the first direction (Z direction) correspond to each other.

[0214] For example, a plurality of second side light sources (1120) can be arranged at equal intervals along the second direction (Y direction).

[0215] 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 the second direction (Y direction). 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 direction).

[0216] By this configuration, the first side light source (1110) and the second side light source (1120) can be arranged to cross 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) is arranged on one side in the first direction (Z direction) and the second side light source (1120) is arranged on the other side in the second direction (Y direction), thereby improving the uniformity of brightness by the plurality of light sources (1100). In other words, the plurality of light sources (1100) in one substrate bar (1220) can be arranged in a zigzag pattern.

[0217] As the plurality of light sources (1100) are arranged as described above in each substrate bar (1220), the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (1220) among the plurality of substrate bars (1220) can be reduced, and the brightness and uniformity of brightness of the display device (1) can be improved.

[0218] 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).

[0219] A plurality of first recessed portions (1223a) may be provided on one side of the central extension portion (1221) in the first direction (Z direction). For example, a plurality of first recessed portions (1223a) may be provided on the upper side of the central extension portion (1221).

[0220] 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).

[0221] A plurality of first recessed portions (1223a) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first recessed portions (1223a) may be arranged such that their positions in the first direction (Z direction) (i.e., the vertical height of the display device (1)) correspond to each other.

[0222] For example, a plurality of first recessed portions (1223a) may be arranged at equal intervals along the second direction (Y direction).

[0223] For example, a plurality of first recessed portions (1223a) may be formed to have shapes that correspond to each other (for example, they may have the same shape).

[0224] 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.

[0225] 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 direction). The other side of the central extension portion (1221) as referred to here means a side different from one side of the central extension portion (1221) where the first recessed portion (1223a) is provided. For example, a plurality of second recessed portions (1223b) may be provided on the lower side of the central extension portion (1221).

[0226] 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).

[0227] A plurality of second recessed portions (1223b) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second recessed portions (1223b) may be arranged such that their positions in the first direction (Z direction) (i.e., the vertical height of the display device (1)) correspond to each other.

[0228] For example, a plurality of second recessed portions (1223b) may be arranged at equal intervals along the second direction (Y direction).

[0229] For example, a plurality of second recessed portions (1223b) may be formed to have shapes corresponding to each other (for example, they may have the same shape).

[0230] 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 not to be parallel to each other in the first direction (Z direction).

[0231] For example, each of the plurality of first protrusions (1222a) may be arranged parallel to one of the plurality of second recessed portions (1223b) that is closest to the plurality of second recessed portions (1223b) in the first direction (Z direction). 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 direction).

[0232] Also, as an example, each of the plurality of second protrusions (1222b) may be arranged parallel to one of the plurality of first recessed portions (1223a) that is closest to the plurality of first recessed portions (1223a) in the first direction (Z direction). That is, the plurality of second protrusions (1222b) and the plurality of first recessed portions (1223a) may be arranged parallel to each other in the first direction (Z direction).

[0233] Due to this, the substrate bar (1220) can have a shape that extends in a zigzag pattern overall.

[0234] The shape of each edge of the plurality of first recessed portions (1223a) may be different from the shape of each edge of the plurality of first protrusions (1222a). In other words, the shape of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the shape of the outer surface of each of the plurality of first protrusions (1222a).

[0235] For example, the curvature of the edge of each of the plurality of first recessed portions (1223a) may be different from the curvature of the edge of each of the plurality of first protrusions (1222a). In other words, the curvature of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the curvature of the outer surface of each of the plurality of first protrusions (1222a).

[0236] Alternatively, the shape of the edge of each of the plurality of first recessed portions (1223a) may be different from the shape of the edge of each of the plurality of second protrusions (1222b). In other words, the shape of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the shape of the outer surface of each of the plurality of second protrusions (1222b).

[0237] For example, the curvature of the edge of each of the plurality of first recessed portions (1223a) may be different from the curvature of the edge of each of the plurality of second protrusions (1222b). In other words, the curvature of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the curvature of the outer surface of each of the plurality of second protrusions (1222b).

[0238] The shape of each edge of the plurality of second recessed portions (1223b) may be different from the shape of each edge of the plurality of second protrusions (1222b). In other words, the shape of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the shape of the outer surface of each of the plurality of second protrusions (1222b).

[0239] For example, the curvature of the edge of each of the plurality of second recessed portions (1223b) may be different from the curvature of the edge of each of the plurality of second protrusions (1222b). In other words, the curvature of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the curvature of the outer surface of each of the plurality of second protrusions (1222b).

[0240] Alternatively, the shape of the edge of each of the plurality of second recessed portions (1223b) may be different from the shape of the edge of each of the plurality of first protrusions (1222a). In other words, the shape of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the shape of the outer surface of each of the plurality of first protrusions (1222a).

[0241] For example, the curvature of the edge of each of the plurality of second recessed portions (1223b) may be different from the curvature of the edge of each of the plurality of first protrusions (1222a). In other words, the curvature of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the curvature of the outer surface of each of the plurality of first protrusions (1222a).

[0242] The "edge of the first protrusion (1222a)" or "outer surface of the first protrusion (1222a)" mentioned here refers to a portion of the outer edge of the substrate bar (1220), that is, the outer edge of the portion of the substrate bar (1220) where the first protrusion (1222a) is provided. The "edge of the first protrusion (1222a)" may be used in a corresponding meaning with terms such as "outline of the first protrusion (1222a)" or "profile of the first protrusion (1222a)".

[0243] Likewise, the “edge of the second protrusion (1222b)” or “outer surface of the second protrusion (1222b)” mentioned herein refers to a portion of the outer edge of the substrate bar (1220), that is, the outer edge of the portion where the second protrusion (1222b) is provided in the substrate bar (1220). The “edge of the second protrusion (1222b)” may be used in a corresponding sense with terms such as “outline of the second protrusion (1222b)” or “profile of the second protrusion (1222b).”

[0244] Likewise, the "edge of the first recessed portion (1223a)" or "outer surface of the first recessed portion (1223a)" mentioned herein means a portion of the outer edge portion of the substrate bar (1220), that is, an outer edge portion of the portion of the substrate bar (1220) where the first recessed portion (1223a) is provided. In other words, the "edge of the first recessed portion (1223a)" or "outer surface of the first recessed portion (1223a)" means a portion of the outer edge portion of the substrate bar (1220), that is, an outer edge portion provided between the outer edges of each of the pair of first protrusions (1222a) adjacent to each other. The "edge of the first recessed portion (1223a)" may be used in a corresponding meaning with terms such as "outline of the first recessed portion (1223a)" or "profile of the first recessed portion (1223a)".

[0245] Likewise, the "edge of the second recessed portion (1223b)" or "outer surface of the second recessed portion (1223b)" mentioned herein means a portion of the outer edge portion of the substrate bar (1220), that is, an outer edge portion of the portion of the substrate bar (1220) where the second recessed portion (1223b) is provided. In other words, the "edge of the second recessed portion (1223b)" or "outer surface of the second recessed portion (1223b)" means a portion of the outer edge portion of the substrate bar (1220), that is, an outer edge portion provided between the outer edges of each of a pair of adjacent second protrusions (1222b). The "edge of the second recessed portion (1223b)" may be used in a corresponding sense with terms such as "outline of the second recessed portion (1223b)" or "profile of the second recessed portion (1223b)".

[0246] In addition, the meaning of the expression "the shape of the edge or outer surface of the first recessed portion (1223a) and the second recessed portion (1223b) is different from the shape of the edge or inner surface of the first protrusion (1222a) and the second protrusion (1222b)" described above does not simply mean that the first protrusion (1222a) and the second protrusion (1222b) have a protruding shape and the first recessed portion (1223a) and the second recessed portion (1223b) have a sunken shape, so that the shapes are different from each other, but means that the shapes of the lines connected along the respective edges are different from each other.

[0247] Referring to FIGS. 7 and 8, the edges of each of the plurality of first protrusions (1222a) and the edges of each of the plurality of second recessed portions (1223b) may have different curvatures at points corresponding to each other in the first direction (Z direction). For example, a first point (Pa) may be defined on one of the plurality of first protrusions (1222a) and a second point (Pd) may be defined on one of the plurality of second recessed portions (1223b). The first point (Pa) and the second point (Pd) may be positioned to correspond to each other in the first direction (Z direction). Here, the curvature (radius of curvature r1) at the first point (Pa) and the curvature (radius of curvature r4) at the second point (Pd) may be different from each other. In other words, a first point (Pa) on an edge spaced apart by a predetermined distance in the second direction (Y) from the outer end (1222aa) that is most protruding in the first direction (Z direction) of each of the plurality of first protrusions (1222a), and a second point (Pd) on an edge spaced apart by the same distance in the second direction (Y direction) from the inner end (1223bb) that is most adjacent to the central extension (1221) in the first direction (Z direction) of each of the plurality of second recessed portions (1223b) can be defined. Here, the curvature (radius of curvature r1) at the first point (Pa) and the curvature (radius of curvature r4) at the second point (Pd) can be different from each other.

[0248] The edges of each of the plurality of second protrusions (1222b) and the edges of each of the plurality of first recessed portions (1223a) may have different curvatures at points corresponding to each other in the first direction (Z direction). For example, a third point (Pb) may be defined on one second protrusion (1222b) of the plurality of second protrusions (1222b) and a fourth point (Pc) may be defined on one first recess (1223a) of the plurality of first recessed portions (1223a). The third point (Pb) and the fourth point (Pc) may be positioned to correspond to each other in the first direction (Z direction). Here, the curvature (radius of curvature r2) at the third point (Pb) and the curvature (radius of curvature r3) at the fourth point (Pc) may be different from each other. In other words, a third point (Pb) on the edge spaced apart by a predetermined distance in the second direction (Y direction) from the outer end (1222bb) that is most protruding in the first direction (Z direction) of each of the plurality of second protrusions (1222b), and a fourth point (Pc) on the edge spaced apart by the same distance in the second direction (Y direction) from the inner end (1223aa) that is most adjacent to the central extension (1221) in the first direction (Z direction) of each of the plurality of first recessed portions (1223a) can be defined. Here, the curvature (radius of curvature r2) at the third point (Pb) and the curvature (radius of curvature r3) at the fourth point (Pc) can be different from each other.

[0249] In addition, a first point (Pa) on the edge spaced apart by a predetermined distance in the second direction (Y direction) from the outer end (1222aa) that is most protruding in the first direction (Z direction) of each of the plurality of first protrusions (1222a), and a fourth point (Pc) on the edge spaced apart by the same distance in the second direction (Y direction) from the inner end (1223aa) that is most adjacent to the central extension (1221) in the first direction (Z direction) of each of the plurality of first recessed portions (1223a) can be defined. Here, the curvature (radius of curvature r1) at the first point (Pa) and the curvature (radius of curvature r3) at the fourth point (Pc) may be different from each other.

[0250] In addition, a third point (Pb) on the edge spaced apart by a predetermined distance in the second direction (Y direction) from the outer end (1222bb) that is most protruding in the first direction (Z direction) of each of the plurality of second protrusions (1222b), and a second point (Pd) on the edge spaced apart by the same distance in the second direction (Y direction) from the inner end (1223bb) that is most adjacent to the central extension (1221) in the first direction (Z direction) of each of the plurality of second recessed portions (1223b) can be defined. Here, the curvature (radius of curvature r2) at the third point (Pb) and the curvature (radius of curvature r4) at the second point (Pd) may be different from each other.

[0251] According to the embodiments illustrated in FIGS. 7 and 8, the shape of each edge of the plurality of first protrusions (1222a) and the shape of each edge of the plurality of second protrusions (1222b) may correspond to each other. In other words, the shape of each outer surface of the plurality of first protrusions (1222a) and the shape of each outer surface of the plurality of second protrusions (1222b) may correspond to each other (for example, may have the same shape). Specifically, the edge of each of the plurality of first protrusions (1222a) and the edge of each of the plurality of second protrusions (1222b) may have a curvature that corresponds to each other (for example, the same curvature). In other words, the outer surface of each of the plurality of first protrusions (1222a) and the outer surface of each of the plurality of second protrusions (1222b) may have a curvature that corresponds to each other (for example, the same curvature).

[0252] In addition, according to the embodiments illustrated in FIGS. 7 and 8, the shape of each edge of the plurality of first recessed portions (1223a) and the shape of each edge of the plurality of second recessed portions (1223b) may correspond to each other. In other words, the shape of each outer surface of the plurality of first recessed portions (1223a) and the shape of each outer surface of the plurality of second recessed portions (1223b) may correspond to each other. Specifically, the edge of each of the plurality of first recessed portions (1223a) and the edge of each of the plurality of second recessed portions (1223b) may have curvatures that correspond to each other. In other words, the outer surface of each of the plurality of first recessed portions (1223a) and the outer surface of each of the plurality of second recessed portions (1223b) may have curvatures that correspond to each other.

[0253] At this time, the shape of the edge of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the shape of the edge of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b). In other words, the shape of the outer surface of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the shape of the outer surface of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b). Specifically, as illustrated in FIGS. 7 and 8, the curvature of the edge of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the curvature of the edge of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b). In other words, the curvature of the outer surface of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the curvature of the outer surface of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b).

[0254] In this way, since the shapes of the first protrusion (1222a) and the second protrusion (1222b) of the substrate bar (1220) and the shapes of the first recess (1223a) and the second recess (1223b) are different, the efficiency of the process for manufacturing the light source substrate (1200) can be improved. For example, when performing a process of manufacturing a plurality of light source substrates (1200A, 1200B) from a single substrate material (1200M) as described below with reference to FIGS. 16 to 19, when the shapes of the first protrusion (1222a) and the second protrusion (1222b) and the first recess (1223a) and the second recess (1223b) arranged side by side are different from each other rather than the same, it may be easier to separate the substrate bars (1220A, 1220B) included in different light source substrates (1200A, 1200B). Through this, the manufacturing cost of the product may be reduced.

[0255] More specifically, the curvature of the edge of each of the plurality of first protrusions (1222a) may be set to be greater than the curvature of the edge of each of the plurality of first recessed portions (1223a). In other words, the radius of curvature (r1) of the edge of each of the plurality of first protrusions (1222a) may be smaller than the radius of curvature (r3) of the edge of each of the plurality of first recessed portions (1223a).

[0256] Referring to FIGS. 7 and 8 for more detailed explanation, the curvature at the first point (Pa) on the first protrusion (1222a) may be smaller than the curvature at the fourth point (Pc) of the first recess (1223a). Here, as an example, the distance in the second direction (Y direction) from the outer end (1222aa) of the first protrusion (1222a) to the first point (Pa) and the distance in the second direction (Y direction) from the inner end (1223aa) of the first recess (1223a) to the fourth point (Pc) may correspond to each other.

[0257] In particular, when the first point (Pa) of the first protrusion (1222a) is located at a portion adjacent to the outer end (1222aa) on the edge of the first protrusion (1222a), and the fourth point (Pc) of the first recessed portion (1223a) is located at a portion adjacent to the inner end (1223aa) on the edge of the first recessed portion (1223a), the absolute value of the radius of curvature at the first point (Pa) may be less than or equal to the absolute value of the radius of curvature at the fourth point (Pc).

[0258] The curvature of each edge of the plurality of first protrusions (1222a) may be set to be greater than the curvature of each edge of the plurality of second recessed portions (1223b). In other words, the radius of curvature (r1) of each edge of the plurality of first protrusions (1222a) may be smaller than the radius of curvature (r4) of each edge of the plurality of second recessed portions (1223b).

[0259] Referring to FIGS. 7 and 8 for more detailed explanation, the curvature at the first point (Pa) on the first protrusion (1222a) may be smaller than the curvature at the second point (Pd) of the second recess (1223b). Here, as an example, the distance in the second direction (Y direction) from the outer end (1222aa) of the first protrusion (1222a) to the first point (Pa) and the distance in the second direction (Y direction) from the inner end (1223bb) of the second recess (1223b) to the second point (Pd) may correspond to each other.

[0260] In particular, when the first point (Pa) of the first protrusion (1222a) is located at a portion adjacent to the outer end (1222aa) on the edge of the first protrusion (1222a), and the second point (Pd) of the second recessed portion (1223b) is located at a portion adjacent to the inner end (1223bb) on the edge of the second recessed portion (1223b), the absolute value of the radius of curvature at the first point (Pa) may be less than or equal to the absolute value of the radius of curvature at the second point (Pd).

[0261] The curvature of each edge of the plurality of second protrusions (1222b) may be set to be greater than the curvature of each edge of the plurality of second recessed portions (1223b). In other words, the radius of curvature (r2) of the edge of each of the second protrusions (1222b) may be smaller than the radius of curvature (r4) of the edge of each of the plurality of second recessed portions (1223b).

[0262] Referring to FIGS. 7 and 8 for more detailed explanation, the curvature at the third point (Pb) on the second protrusion (1222b) may be smaller than the curvature at the second point (Pd) of the second recess (1223b). Here, for example, the distance in the second direction (Y direction) from the outer end (1222bb) of the second protrusion (1222b) to the third point (Pb) and the distance in the second direction (Y direction) from the inner end (1223bb) of the second recess (1223b) to the second point (Pd) may correspond to each other.

[0263] In particular, when the third point (Pb) of the second protrusion (1222b) is located at a portion adjacent to the outer end (1222bb) on the edge of the second protrusion (1222b), and the second point (Pd) of the second recessed portion (1223b) is located at a portion adjacent to the inner end (1223bb) on the edge of the second recessed portion (1223b), the absolute value of the radius of curvature at the third point (Pb) may be less than or equal to the absolute value of the radius of curvature at the second point (Pd).

[0264] The curvature of each edge of the plurality of second protrusions (1222b) may be set to be greater than the curvature of each edge of the plurality of first recessed portions (1223a). In other words, the radius of curvature (r2) of each edge of the plurality of second protrusions (1222b) may be smaller than the radius of curvature (r3) of each edge of the plurality of first recessed portions (1223a).

[0265] Referring to FIGS. 7 and 8 for more detailed explanation, the curvature at the third point (Pb) on the second protrusion (1222b) may be smaller than the curvature at the fourth point (Pc) of the first recess (1223a). Here, as an example, the distance in the second direction (Y direction) from the outer end (1222bb) of the second protrusion (1222b) to the third point (Pb) and the distance in the second direction (Y direction) from the inner end (1223aa) of the first recess (1223a) to the fourth point (Pc) may correspond to each other.

[0266] In particular, when the third point (Pb) of the second protrusion (1222b) is located at a portion adjacent to the outer end (1222bb) on the edge of the second protrusion (1222b), and the fourth point (Pc) of the first recessed portion (1223a) is located at a portion adjacent to the inner end (1223aa) on the edge of the first recessed portion (1223a), the absolute value of the radius of curvature at the third point (Pb) may be less than or equal to the absolute value of the radius of curvature at the fourth point (Pc).

[0267] That is, the curvature of the first protrusion (1222a) and the second protrusion (1222b) provided on the substrate bar (1220) may be provided to be greater than the curvature of the first recessed portion (1223a) and the second recessed portion (1223b). In other words, the radius of curvature of the first protrusion (1222a) and the second protrusion (1222b) provided on the substrate bar (1220) may be smaller than the radius of curvature of the first recessed portion (1223a) and the second recessed portion (1223b).

[0268] When the substrate bar (1220) has such a structure, the efficiency of the process for manufacturing the light source substrate (1200) can be improved. For example, when performing a process for manufacturing a plurality of light source substrates (1200A, 1200B) from one substrate material (1200M) as described below with reference to FIGS. 16 to 19, if the curvature of the first protrusion (1222a) and the second protrusion (1222b) arranged side by side is greater than the curvature of the first recess (1223a) and the second recess (1223b), the process for separating the substrate bars (1220A, 1220B) included in different light source substrates (1200A, 1200B) can be further simplified. Additionally, during the process of manufacturing multiple light source substrates (1200A, 1200B) from a single substrate material (1200M), the portions unnecessarily removed can be reduced, and material waste can be prevented, thereby contributing to cost savings. This can lead to a reduction in product manufacturing costs.

[0269] A detailed description of the method for manufacturing the light source substrate (1200) through the steps of FIGS. 16 to 19 will be described later.

[0270] In addition, as the radius of curvature of the first protrusion (1222a) and the second protrusion (1222b) in the substrate bar (1220) decreases, the length protruding from the central extension (1221) relative to the area of ​​the first protrusion (1222a) and the second protrusion (1222b) may increase. As a result, the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (1220) relative to the overall area of ​​the plurality of substrate bars (1220) may decrease, and the brightness and uniformity of brightness of the display device (1) may be improved.

[0271] In addition, as the radius of curvature of the first recessed portion (1223a) and the second recessed portion (1223b) in the substrate bar (1220) increases, the amount of area reduction of the portion corresponding to the first recessed portion (1223a) and the second recessed portion (1223b) of the substrate bar (1220) relative to the depth at which the first recessed portion (1223a) and the second recessed portion (1223b) are sunk between a pair of protrusions (e.g., the first protrusion (1222a) or the second protrusion (1222b)) can increase.

[0272] Meanwhile, FIGS. 7 and 8 illustrate an embodiment in which the shapes of the edges of each of the plurality of first protrusions (1222a) and each of the edges of each of the plurality of second protrusions (1222b) correspond to each other (for example, have the same curvature), and the shapes of the edges of each of the plurality of first recessed portions (1223a) and each of the edges of each of the plurality of second recessed portions (1223b) correspond to each other (for example, have the same curvature). In this case, the manufacturing process of the light source substrate (1200) can be simplified, and the layout of the light source substrate (1200) can be easily designed, thereby improving efficiency in the design and manufacturing process of the product and reducing the manufacturing cost of the product.

[0273] As illustrated in FIG. 8, a first recessed area (1223a1) may be defined by one first recessed area (1223a) among a plurality of first recessed areas (1223a) and a pair of first protrusions (1222a) adjacent to the first recessed area (1223a). Specifically, the first recessed area (1223a1) may be defined by a line connecting one first recessed area (1223a) among a plurality of first recessed areas (1223a) and an outer end (1222aa) of each of the pair of first protrusions (1222a) adjacent thereto.

[0274] In addition, as illustrated in FIG. 8, a second recessed area (1223b1) may be defined by one second recessed area (1223b) among a plurality of second recessed areas (1223b) and a pair of second protrusions (1222b) adjacent to the second recessed area (1223b). Specifically, the second recessed area (1223b1) may be defined by a line connecting one second recessed area (1223b) among a plurality of second recessed areas (1223b) and an outer end (1222bb) of each of the pair of second protrusions (1222b) adjacent thereto.

[0275] Here, the size (A1) of the first protrusion (1222a) may be different from the size (A3) of the first recessed area (1223a1). In other words, the area (A1) of the first protrusion (1222a) protruding from the central extension (1221) may be different from the area (A3) of the first recessed area (1223a1). For example, as illustrated in FIG. 8, the size (A1) of the first protrusion (1222a) may be smaller than the size (A3) of the first recessed area (1223a1).

[0276] The size (A1) of the first protrusion (1222a) may be different from the size (A4) of the second recessed area (1223b1). In other words, the area (A1) of the first protrusion (1222a) protruding from the central extension (1221) may be different from the area (A4) of the second recessed area (1223b1). For example, as illustrated in FIG. 8, the size (A1) of the first protrusion (1222a) may be smaller than the size (A4) of the second recessed area (1223b1).

[0277] The size (A2) of the second protrusion (1222b) may be different from the size (A4) of the second recessed area (1223b1). In other words, the area (A2) of the second protrusion (1222b) protruding from the central extension (1221) may be different from the area (A4) of the second recessed area (1223b1). For example, as illustrated in FIG. 8, the size (A2) of the second protrusion (1222b) may be smaller than the size (A4) of the second recessed area (1223b1).

[0278] The size (A2) of the second protrusion (1222b) may be different from the size (A3) of the first recessed area (1223a1). In other words, the area (A2) of the second protrusion (1222b) protruding from the central extension (1221) may be different from the area (A3) of the first recessed area (1223a1). For example, as illustrated in FIG. 8, the size (A2) of the second protrusion (1222b) may be smaller than the size (A3) of the first recessed area (1223a1).

[0279] For example, the size (A1) of the first protrusion (1222a) may roughly correspond to the size (A2) of the second protrusion (1222b). For example, the size (A3) of the first recessed area (1223a1) may roughly correspond to the size (A4) of the second recessed area (1223b1).

[0280] That is, the sizes of the first protrusion (1222a) and the second protrusion (1222b) provided on the substrate bar (1220) and the sizes of the first recessed portion (1223a) and the second recessed portion (1223b) may be different from each other. For example, the sizes of the first protrusion (1222a) and the second protrusion (1222b) provided on the substrate bar (1220) may be smaller than the sizes of the first recessed portion (1223a) and the second recessed portion (1223b).

[0281] When the substrate bar (1220) has such a structure, the efficiency of the process for manufacturing the light source substrate (1200) can be improved. For example, when performing a process for manufacturing a plurality of light source substrates (1200A, 1200B) from one substrate material (1200M) as described below with reference to FIGS. 16 to 19, when the sizes of the first protrusion (1222a) and the second protrusion (1222b) arranged side by side and the sizes of the first recess (1223a) and the second recess (1223b) are different from each other, the process for separating the substrate bars (1220A, 1220B) included in different light source substrates (1200A, 1200B) can be further simplified. Additionally, during the process of manufacturing multiple light source substrates (1200A, 1200B) from a single substrate material (1200M), the portions unnecessarily removed can be reduced, and material waste can be prevented, thereby contributing to cost savings. This can lead to a reduction in product manufacturing costs.

[0282] FIG. 9 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0283] Referring to FIG. 9, a pair of adjacent substrate bars (e.g., a first substrate bar (1220A1) and a second substrate bar (1220A2)) among a plurality of substrate bars (1220) included in a light source substrate (1200) of a display device (1) according to one embodiment of the present disclosure will be described in detail as an example. The structure of the pair of substrate bars (e.g., the first substrate bar (1220A1) and the second substrate bar (1220A2)) described with reference to FIG. 9 can be applied to correspond to the structure of any pair of adjacent substrate bars (1220) among the plurality of substrate bars (1220).

[0284] Referring to FIG. 9, a pair of substrate bars (e.g., a first substrate bar (1220A1) and a second substrate bar (1220A2)) included in a display device (1) according to one embodiment of the present disclosure may be arranged side by side in a first direction (Z direction). Hereinafter, for convenience of explanation, among a pair of substrate bars (e.g., a first substrate bar (1220A1) and a second substrate bar (1220A2)) based on FIG. 9, the substrate bar located on the upper side (+Z direction side) is referred to as a first substrate bar (1220A1), and the substrate bar located on the lower side (-Z direction side) is referred to as a second substrate bar (1220A2).

[0285] For example, the first substrate bar (1220A1) and the second substrate bar (1220A2) may have shapes that correspond to each other (for example, may have the same shape). Specifically, the plurality of first protrusions (1222a) provided on the first substrate bar (1220A1) and the plurality of first protrusions (1222a) provided on the second substrate bar (1220A2) may have shapes that correspond to each other. In addition, the plurality of second protrusions (1222b) provided on the first substrate bar (1220A1) and the plurality of second protrusions (1222b) provided on the second substrate bar (1220A2) may have shapes that correspond to each other. In addition, the plurality of first recessed portions (1223a) provided in the first substrate bar (1220A1) and the plurality of first recessed portions (1223a) provided in the second substrate bar (1220A2) may have shapes that correspond to each other. In addition, the plurality of second recessed portions (1223b) provided in the first substrate bar (1220A1) and the plurality of second recessed portions (1223b) provided in the second substrate bar (1220A2) may have shapes that correspond to each other.

[0286] For example, each of the plurality of first protrusions (1222a) provided on the first substrate bar (1220A1) may be arranged in parallel with each of the plurality of first protrusions (1222a) provided on the second substrate bar (1220A2) in the first direction (Z direction).

[0287] For example, each of the plurality of second protrusions (1222b) provided on the first substrate bar (1220A1) may be arranged in parallel with each of the plurality of second protrusions (1222b) provided on the second substrate bar (1220A2) in the first direction (Z direction).

[0288] For example, each of the plurality of first recessed portions (1223a) provided on the first substrate bar (1220A1) may be arranged in parallel with each of the plurality of first recessed portions (1223a) provided on the second substrate bar (1220A2) in the first direction (Z direction).

[0289] For example, each of the plurality of second recessed portions (1223b) provided on the first substrate bar (1220A1) may be arranged in parallel with each of the plurality of second recessed portions (1223b) provided on the second substrate bar (1220A2) in the first direction (Z direction).

[0290] More specifically, as illustrated in FIG. 9, a plurality of first protrusions (1222a), a plurality of second recessed portions (1223b) provided on a first substrate bar (1220A1) and a plurality of first protrusions (1222a), a plurality of second recessed portions (1223b) provided on a second substrate bar (1220A2) can be arranged side by side in a first direction (Z direction).

[0291] In addition, as illustrated in FIG. 9, a plurality of first recessed portions (1223a), a plurality of second protrusions (1222b) provided in the first substrate bar (1220A1) and a plurality of first recessed portions (1223a), a plurality of second protrusions (1222b) provided in the second substrate bar (1220A2) can be arranged side by side in the first direction (Z direction).

[0292] As illustrated in FIG. 9, when a light source (1100) (e.g., a first-side light source (1110) or a second-side light source (1120)) is mounted on the first protrusion (1222a) and the second protrusion (1222b) of each substrate bar (1220), the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (e.g., a first substrate bar (1220A1) and a second substrate bar (1220A2)) can be reduced. As a result, the brightness and uniformity of brightness of the display device (1) can be improved.

[0293] For example, as illustrated in FIG. 9, among the plurality of light sources (1100) mounted on the first substrate bar (1220A1), the second side light sources (1120) adjacent to the second substrate bar (1220A2) may be arranged on the plurality of second protrusions (1222b) protruding from the central extension (1221) of the first substrate bar (1220A1) toward the second substrate bar (1220A2). In addition, among the plurality of light sources (1100) mounted on the second substrate bar (1220A2), the first side light sources (1110) adjacent to the first substrate bar (1220A1) may be arranged on the plurality of first protrusions (1222a) protruding from the central extension (1221) of the second substrate bar (1220A2) toward the first substrate bar (1220A1). By this structure, the distance between the second side light source (1120) of the first substrate bar (1220A1) and the first side light source (1110) of the second substrate bar (1220A2) can be further reduced.

[0294] At this time, since the intensity of light output by one light source (1100) based on the supplied power is set within a predetermined range, the profile of light output by one light source (1100) can be set within a predetermined range accordingly.

[0295] In one embodiment of the present disclosure, since a plurality of light sources (1100) are arranged on the first protrusion (1222a) and the second protrusion (1222b) of the substrate bar (1220), the profiles of light output by the adjacent light sources (1100) of the adjacent pair of substrate bars (1220) can sufficiently overlap with each other. For example, as illustrated in FIG. 9, the profiles (L1) of light output by the second side light sources (1120) of the first substrate bar (1220A1) and the profiles (L2) of light output by the first side light sources (1110) of the second substrate bar (1220A2) can sufficiently overlap with each other. As a result, the uniformity of the brightness of the display device (1) can be improved.

[0296] For example, a separation distance in the first direction (Z direction) between a pair of substrate bars (e.g., a first substrate bar (1220A1) and a second substrate bar (1220A2)) may be set to be longer than a width of one substrate bar (1220) in the first direction (Z direction). For example, a distance in the first direction (Z direction) between a second protrusion (1222b) of the first substrate bar (1220A1) and a first recess (1223a) of the second substrate bar (1220A2) may be set to be longer than a distance in the first direction (Z direction) between the first recess (1223a) of the first substrate bar (1220A1) and the second protrusion (1222b). Alternatively, for example, the distance in the first direction (Z direction) between the second recessed portion (1223b) of the first substrate bar (1220A1) and the first protrusion (1222a) of the second substrate bar (1220A2) may be set to be longer than the distance in the first direction (Z direction) between the first protrusion (1222a) of the first substrate bar (1220A1) and the second recessed portion (1223b) of the first substrate bar (1220A1).

[0297] By this structure, the amount of material consumed in manufacturing the light source substrate (1200) can be reduced. For example, when a plurality of substrate bars (1220) have this structure, it may be possible to manufacture a plurality of light source substrates (1200A, 1200B) from a single substrate material (1200M), as described later in FIGS. 16 to 19.

[0298] In this way, instead of a long distance between a pair of substrate bars (e.g., a first substrate bar (1220A1) and a second substrate bar (1220A2)), the protrusions (e.g., a second protrusion (1222b) of the first substrate bar (1220A1) and a first protrusion (1222a) of the second substrate bar (1220A2)) that are adjacent to and facing each other in a pair of substrate bars (e.g., a first protrusion (1222b) of the first substrate bar (1220A1) and a second protrusion (1222a) of the second substrate bar (1220A2)) can have their distance reduced as they protrude toward each other. This reduces the distance between adjacent light sources (1100), thereby improving the uniformity of light brightness.

[0299] In order to further improve the uniformity of the brightness of the display device (1), the distance between multiple light sources (1100) can be determined as follows.

[0300] Taking Fig. 9 as an example, one of the plurality of light sources (1100) mounted on one side adjacent to the second substrate bar (1220A2) among the two sides in the first direction (Z direction) of the first substrate bar (1220A1) may be defined as a first light source (LS1). In addition, one of the plurality of light sources (1100) mounted on the other side opposite to the second substrate bar (1220A2) among the two sides in the first direction (Z direction) of the first substrate bar (1220A2) may be defined as a second light source (LS2). In addition, among the plurality of light sources (1100) mounted on one side adjacent to the first substrate bar (1220A1) among the two sides in the first direction (Z direction) of the second substrate bar (1220A2), the light source that is closest to the first light source (LS1) can be defined as a third light source (LS3). The third light source (LS3) can be one of the light sources that is closest to the first light source (LS1) among the plurality of light sources (1100) mounted on the second substrate bar (1220A2).

[0301] For example, the first light source (LS1) may be one of the second-side light sources (1120) mounted on the first substrate bar (1220A1), the second light source (LS2) may be one of the first-side light sources (1110) mounted on the first substrate bar (1220A1), and the third light source (LS3) may be one of the first-side light sources (1110) mounted on the second substrate bar (1220A2).

[0302] At this time, for example, the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) may satisfy a range of 9 / 10 or more and 10 / 9 or less. When the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) satisfies the above range, the uniformity of the luminance of the display device (1) may be improved. On the other hand, when the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) is outside the above range, the uniformity of the luminance of the display device (1) may be relatively deteriorated.

[0303] Preferably, in order to further improve the uniformity of the brightness of the display device (1), the distance (d1) between the first light source (LS1) and the second light source (LS2) and the distance (d2) between the first light source (LS1) and the third light source (LS3) can be set to be equal to each other.

[0304] FIG. 10 is a diagram illustrating experimental results when the pitch ratio between a plurality of light sources on a light source substrate of a display device is outside the range of one embodiment of the present disclosure. FIG. 11 is a diagram illustrating experimental results when the pitch ratio between a plurality of light sources on a light source substrate of a display device is within the range of one embodiment of the present disclosure.

[0305] Referring to FIG. 10, for any of the first light source (LS1), the second light source (LS2), and the third light source (LS3) among the plurality of light sources (1100) included in the light source module (1000) of the display device (1) (see FIG. 9), the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) may be set to be less than 9 / 10 or in a range exceeding 10 / 9.

[0306] Referring to FIG. 11, for any of the first light source (LS1), the second light source (LS2), and the third light source (LS3) among the plurality of light sources (1100) included in the light source module (1000) of the display device (1) (see FIG. 9), the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) can be set in a range of 9 / 10 or more and 10 / 9 or less.

[0307] Here, the relationship between any first light source (LS1), second light source (LS2), and third light source (LS3) corresponds to the relationship illustrated in FIG. 9.

[0308] Referring to FIGS. 10 and 11, it can be seen that when the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) satisfies a range of 9 / 10 or more and 10 / 9 or less, the brightness of the display device (1) is uniformly perceived (see FIG. 11), but when it goes beyond that range, the brightness uniformity of the display device (1) is degraded (see FIG. 10).

[0309] As in the case of FIG. 10, when the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) is outside the range of 9 / 10 or more and 10 / 9 or less, the number of light sources (1100) required to improve the uniformity of the brightness of the display device (1) increases, which may increase the manufacturing cost of the product in the comparative example. In addition, in the comparative example, as the number of required light sources (1100) increases, the area of ​​the light source substrate (1200) for mounting the light sources (1100) may be required to be wider, which may further increase the manufacturing cost of the product.

[0310] However, in one embodiment of the present disclosure, since the ratio of the distance (d2) between the first light source (LS1) and the third light source (LS3) to the distance (d1) between the first light source (LS1) and the second light source (LS2) satisfies a range of 9 / 10 or more and 10 / 9 or less, it is possible to provide a screen with uniform brightness as illustrated in FIG. 11 while reducing the number of required light sources (1100) and the area of ​​the light source substrate (1200).

[0311] In addition, while providing a screen with uniform brightness, the number of light sources (1100) and the area of ​​the light source substrate (1200) can be reduced, so that the distance between a pair of adjacent substrate bars (1220) in the first direction (Z direction) can be designed to be longer than the width of one substrate bar (1220) in the first direction (Z direction), and it is possible to manufacture a plurality of light source substrates (1200A, 1200B) from one substrate material (1200M) (see FIGS. 16 to 19), thereby preventing waste of materials and further reducing the manufacturing cost of the product.

[0312] FIG. 12 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure. FIG. 13 is a view illustrating a state in which a light source substrate on which a driving element is mounted and a reflective sheet are combined in a display device according to one embodiment of the present disclosure.

[0313] Referring to FIGS. 12 and 13, a display device (1) according to one embodiment of the present disclosure may include a substrate body (1210) connected to a plurality of substrate bars (1220) as described above.

[0314] As described above, the substrate body (1210) can extend in the first direction (Z direction).

[0315] As described above, some of the light sources (1100) may be mounted on the substrate body (1210). For convenience, the light sources mounted on the substrate body (1210) are referred to as body light sources (1130) hereinafter.

[0316] For example, a plurality of body light sources (1130) may be mounted on the substrate body (1210). For example, the plurality of body light sources (1130) may be arranged at equal intervals from each other.

[0317] Some of the plurality of body light sources (1130) may be arranged in parallel with the plurality of light sources (e.g., the first side light sources (1110)) mounted on the plurality of first protrusions (1222a) provided on one of the plurality of substrate bars (1220) along the second direction (Y direction). In this case, the body light sources (1130) and the first side light sources (1110) may be arranged at equal intervals from each other along the second direction (Y direction).

[0318] Some of the other body light sources (1130) may be arranged in parallel with the plurality of light sources (e.g., the second side light sources (1120)) mounted on the plurality of second protrusions (1222b) provided on one of the plurality of substrate bars (1220) along the second direction (Y direction). In this case, the body light sources (1130) and the second side light sources (1120) may be arranged at equal intervals from each other along the second direction (Y direction).

[0319] By this structure, the uniformity of brightness can be improved in the entire area of ​​the screen, including the area corresponding to the position of the substrate body (1210) as well as the area corresponding to the position of the plurality of substrate bars (1220) on the screen provided by the display device (1).

[0320] As described above, the connector (1300) can be mounted on the back surface of the substrate body (1210). The back surface of the substrate body (1210) referred to here means one side of the substrate body (1210) facing the bottom chassis (15).

[0321] For example, the connector (1300) may be formed to have a long side (1301) and a short side (1302). For example, the long side (1301) and the short side (1302) of the connector (1300) may be arranged to be perpendicular to each other, but embodiments of the present disclosure are not limited thereto.

[0322] At this time, the long side (1301) of the connector (1300) may be parallel to the first direction (Z direction). That is, the connector (1300) may be arranged such that its long side (1301) is parallel to the first direction (Z direction). In other words, the connector (1300) may be arranged such that its length in the first direction (Z direction) is longer than its length in the second direction (Y direction), and may extend long in the first direction (Z direction). The connector (1300) may be arranged such that its long side (1301) is parallel to the first direction (Z direction), which is the longitudinal direction of the substrate body (1210). The connector (1300) may be arranged such that its long side (1301) is approximately orthogonal to the second direction (Y direction), which is the direction in which each substrate bar (1220) extends. The connector (1300) can be arranged so that its long side (1301) is parallel to the first direction (Z direction), which is the direction in which the plurality of substrate bars (1220) are arranged.

[0323] Unlike the case illustrated in FIG. 12, in the comparative example, if it is assumed that the short side (1302) of the connector (1300) is parallel to the first direction (Z direction), the connector (1300) may be arranged so that the long side (1301) is parallel to the second direction (Y direction), and accordingly, the substrate body (1210) on which the connector (1300) is mounted may be required to have a longer length in the second direction (Y direction) compared to the case illustrated in FIG. 12. In this case, the amount of material required to manufacture the substrate body (1210) may increase, and the manufacturing cost of the product may increase.

[0324] However, as illustrated in FIG. 12, since the long side (1301) of the connector (1300) is parallel to the first direction (Z direction), the amount of material required to manufacture the substrate body (1210) can be reduced, and the manufacturing cost of the product can be reduced.

[0325] For example, a wire connected to a control assembly (50) or a power assembly (60) (or a separate printed circuit board assembly directly connected thereto) may be arranged to be electrically connected to the connector (1300) through a terminal provided on the long side (1301) of the connector (1300). In addition, for example, a power supply line (1230) of a light source substrate (1200) may be arranged to be electrically connected to the connector (1300) through a terminal provided on the long side (1301) of the connector (1300).

[0326] A display device (1) may include a plurality of driving elements (1400) mounted on a light source substrate (1200). The plurality of driving elements (1400) may be arranged to control at least some of the light sources (1100) among the plurality of light sources (1100) mounted on the same light source substrate (1200).

[0327] A plurality of driving elements (1400) may be mounted on a light source substrate (1200) and electrically connected to a power supply line (1230). The plurality of driving elements (1400) may be electrically connected to a control assembly (50) and / or a power assembly (60) through a configuration such as a power supply line (1230) and a connector (1300).

[0328] For example, a plurality of light sources (1100) may be divided into a plurality of dimming blocks including at least one light source (1100), and a plurality of driving elements (1400) may be arranged to control the plurality of dimming blocks by outputting a dimming signal.

[0329] For example, a plurality of driving elements (1400) may be implemented as a pixel IC (Integrated Circuit) or an AM IC (Active Matrix Integrated Circuit).

[0330] For example, as illustrated in FIG. 12, a plurality of driving elements (1400) may be mounted on the front surface (1210F) of the substrate body (1210). Here, the front surface (1210F) of the substrate body (1210) refers to one side of the substrate body (1210) facing the display panel (20).

[0331] At this time, as described above, a reflective sheet (120) may be attached to the front surface of the substrate body (1210). Accordingly, as illustrated in FIG. 13, a driving element penetration portion (120b) may be formed in the reflective sheet (120) in an area corresponding to the positions of a plurality of driving elements (1400), and each of the plurality of driving elements (1400) may protrude toward the front side of the reflective sheet (120) by penetrating the corresponding driving element penetration portion (120b).

[0332] In this case, in the comparative example, the reflectivity of the reflective sheet (120) may be reduced at the locations of the plurality of driving elements (1400) and the corresponding driving element penetration portions (120b). As a result, the uniformity of the brightness of the display device (1) of the comparative example may be reduced.

[0333] To solve this problem, a plurality of driving elements (1400) may be arranged on the front surface (1210F) of the substrate body (1210) so that their positions in the first direction (Z direction) are different from each other, and some of the driving elements (1400) may be arranged so that their positions in the second direction (Y direction) are different from those of other driving elements (1400).

[0334] More specifically, as illustrated in FIG. 12, the plurality of driving elements (1400) may include driving elements (1400A) in a first row and driving elements (1400B) in a second row.

[0335] The driving elements (1400A) of the first row can be arranged along the first direction (Z direction). Specifically, the driving elements (1400A) included in the driving elements (1400A) of the first row can be arranged to be spaced apart from each other along the first direction (Z direction).

[0336] Additionally, the driving elements (1400B) of the second row may be arranged along the first direction (Z direction). Specifically, the driving elements (1400B) included in the driving elements (1400B) of the second row may be arranged to be spaced apart from each other along the first direction (Z direction).

[0337] Here, the driving elements (1400A) of the first row and the driving elements (1400B) of the second row may be arranged to be spaced apart from each other. Specifically, each driving element (1400A) included in the driving elements (1400A) of the first row and each driving element (1400B) included in the driving elements (1400B) of the second row may be arranged to be spaced apart from each other in the second direction (Y direction). That is, a plurality of driving elements (1400A) may be arranged in a zigzag pattern on the front surface (1210F) of the substrate body (1210).

[0338] By this structure, the decrease in brightness due to the driving element (1400) can be prevented from being concentrated in a specific area, and the uniformity of the brightness of the display device (1) can be improved.

[0339] FIG. 14 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0340] In describing a display device (1) according to one embodiment of the present disclosure with reference to FIG. 14, the same reference numerals are given to the configurations corresponding to the configurations of the embodiments described with reference to FIGS. 1 to 13, and repeated descriptions may be omitted.

[0341] Referring to FIG. 14, a display device (1) according to one embodiment of the present disclosure may include a plurality of driving elements (1400-1). Each of the plurality of driving elements (1400-1) according to the embodiment of FIG. 14 may have a structure corresponding to each of the plurality of driving elements (1400) according to the embodiments of FIGS. 12 and 13.

[0342] A plurality of driving elements (1400-1) may be mounted on the front surface (1210F) of the substrate body (1210). At this time, as illustrated in FIG. 14, the plurality of driving elements (1400-1) may be arranged along one direction on the front surface (1210F) of the substrate body (1210). For example, the plurality of driving elements (1400-1) may be arranged spaced apart from each other along the first direction (Z direction) on the front surface (1210F) of the substrate body (1210).

[0343] FIG. 15 is an enlarged view of a portion of the back surface of a light source module of a display device according to one embodiment of the present disclosure.

[0344] In describing a display device (1) according to one embodiment of the present disclosure with reference to FIG. 15, the same reference numerals are given to the configurations corresponding to the configurations of the embodiments described with reference to FIGS. 1 to 13, and repeated descriptions may be omitted.

[0345] Referring to FIG. 15, a display device (1) according to one embodiment of the present disclosure may include a plurality of driving elements (1400-2). Each of the plurality of driving elements (1400-2) according to the embodiment of FIG. 15 may have a structure corresponding to each of the plurality of driving elements (1400) according to the embodiments of FIGS. 12 and 13.

[0346] A plurality of driving elements (1400-2) may be mounted on the back surface (1210R) of the substrate body (1210). Here, the back surface (1210R) of the substrate body (1210) means a side opposite to the front surface (1210F, see FIGS. 12 and 14) of the substrate body (1210) facing the display panel (20). In other words, the back surface (1210R) of the substrate body (1210) means a side facing the bottom chassis (15) of the substrate body (1210).

[0347] By this structure, interference between the reflective sheet (120) and the plurality of driving elements (1400-2) may not occur, the plurality of driving elements (1400-2) may not affect the brightness of light, and the problem of the brightness of the display device (1) becoming uneven may be prevented.

[0348] FIG. 16 is a drawing illustrating a step of preparing a substrate material in a method of manufacturing a light source substrate used in a display device according to one embodiment of the present disclosure. FIG. 17 is a drawing illustrating a step of processing a light source substrate used in a display device according to one embodiment of the present disclosure. FIG. 18 is a drawing illustrating a step before separating a pair of light source substrates used in a display device according to one embodiment of the present disclosure. FIG. 19 is a drawing illustrating a step after separating a pair of light source substrates used in a display device according to one embodiment of the present disclosure.

[0349] Referring to FIGS. 16 to 19, a light source substrate used in a display device (1) according to one embodiment of the present disclosure can be manufactured by a method of manufacturing a plurality of light source substrates (1200A, 1200B) from one substrate material (1200M).

[0350] First, referring to FIG. 16, a single substrate material (1200M) having a plurality of light source substrates (1200A, 1200B) designed thereon can be prepared. The single substrate material (1200M) can be prepared in the form of an integral plate. Specifically, as illustrated in FIG. 16, a pair of light source substrates (1200A, 1200B) to be manufactured can be formed from a single substrate material (1200M).

[0351] For example, a pair of light source substrates (1200A, 1200B) may be flipped 180 degrees on a single substrate material (1200M). The pair of light source substrates (1200A, 1200B) may be configured such that their respective substrate bars (1220) overlap each other. Between adjacent pairs of substrate bars (1220) provided on one of the light source substrates (e.g., 1200A) of the pair of light source substrates (1200A, 1200B), one of the substrate bars (1220) provided on another light source substrate (e.g., 1200B) may be positioned. In other words, the substrate bar (1220) provided on one of the pair of light source substrates (1200A, 1200B) and the substrate bar (1220) provided on the other may be arranged to cross each other.

[0352] Additionally, a pair of light source substrates (1200A, 1200B) can be configured such that each substrate body (1210) is positioned on opposite sides.

[0353] Thereafter, referring to FIG. 17, a step of separating a pair of light source substrates (1200A, 1200B) can be performed by cutting along the edges of a pair of light source substrates (1200A, 1200B) illustrated in one substrate material (1200M).

[0354] Specifically, as illustrated in FIG. 17, a tool (T) penetrating the substrate material (1200M) moves along the edge of a pair of light source substrates (1200A, 1200B) and performs a cutting process to separate the pair of light source substrates (1200A, 1200B).

[0355] Various processing devices such as a router can be used as tools (T).

[0356] At this time, the tool (T) moves along the boundary between the substrate bars (1220) of each of a pair of light source substrates (1200A, 1200B) and can separate the pair of light source substrates (1200A, 1200B) from each other. As illustrated in Fig. 17, a gap (g) may be formed as the tool (T) moves along the boundary between the substrate bars (1220). The gap (g) may have a width approximately corresponding to the thickness of the tool (T).

[0357] When a gap (g) is formed by a tool (T), a first protrusion (1222a) and a second protrusion (1222b) and a first recess (1223a) and a second recess (1223b) may be formed on a pair of substrate bars (1220A, 1220B) positioned adjacently with the gap (g) therebetween. As illustrated in Fig. 17, a protrusion (1222b) formed on one substrate bar (1220A) and a recess (1223a) formed on the other substrate bar (1220B) may face each other in the width direction of the substrate bar (1220). Additionally, a recessed portion (1223b) formed in one substrate bar (1220A) and a protrusion (1222a) formed in another substrate bar (1220B) may face each other in the width direction of the substrate bar (1220).

[0358] Here, a difference in curvature radius may occur between the first protrusion (1222a) and the second protrusion (1222b) facing each other and the first recessed portion (1223a) and the second recessed portion (1223b). Specifically, the curvature radius of the protrusions (e.g., the first protrusion (1222a) and the second protrusion (1222b)) may be smaller than the curvature radius of the recessed portions (e.g., the first recessed portion (1223a) and the second recessed portion (1223b)). The difference in the radius of curvature of each of the protrusions (e.g., the first protrusion (1222a) and the second protrusion (1222b)) and the recessed portions (e.g., the first recessed portion (1223a) and the second recessed portion (1223b)) may approximately correspond to the thickness of the tool (T) or the thickness of the gap (g).

[0359] Unless the radius of curvature of the first protrusion (1222a) and the second protrusion (1222b) is smaller than the radius of curvature of the first recess (1223a) and the second recess (1223b), an additional cutting process may be required to match the designed curvature even after the tool (T) performs cutting by passing once along the boundary between the pair of substrate bars (1220A, 1220B). However, as in the case of one embodiment of the present disclosure, the radius of curvature of the first protrusion (1222a) and the second protrusion (1222b) is designed to be smaller than the radius of curvature of the first recess (1223a) and the second recess (1223b), so that even if the tool (T) performs cutting by passing only once across the boundary between a pair of substrate bars (1220A, 1220B), the first protrusion (1222a) and the second protrusion (1222b) and the first recess (1223a) and the second recess (1223b) can be naturally formed to have the designed curvature due to the thickness of the tool (T).

[0360] The thickness of the tool (T) used in this step can be appropriately set by considering the difference in the radius of curvature of each of the protrusions (e.g., the first protrusion (1222a) and the second protrusion (1222b)) and the recessed portions (e.g., the first recessed portion (1223a) and the second recessed portion (1223b)).

[0361] By this method, the process of separating substrate bars (1220A, 1220B) included in a pair of light source substrates (1200A, 1200B) from a single substrate material (1200M) can be further simplified. In addition, the portions unnecessarily removed during the process of manufacturing a plurality of light source substrates (1200A, 1200B) from a single substrate material (1200M) can be reduced, and waste of materials can be prevented, thereby promoting cost reduction. Through this, the manufacturing cost of the product can be reduced.

[0362] Meanwhile, in one embodiment, the pair of light source substrates (1200A, 1200B) may be completely separated from each other simply by moving the tool (T) along the edge of the pair of light source substrates (1200A, 1200B), but as illustrated in FIGS. 17 and 18, the tool (T) may proceed or end the process while leaving a connecting rib (1220c) at the boundary between the substrate bars (1220). The connecting rib (1220c) may be provided to connect the pair of light source substrates (1200A, 1200B) to each other. Specifically, the connecting rib (1220c) may be provided to connect the substrate bars (1220A, 1220B) of each of the pair of light source substrates (1200A, 1200B) to each other.

[0363] As illustrated in FIG. 18, since the substrate bars (1220A, 1220B) of each of a pair of light source substrates (1200A, 1200B) are connected by a connecting rib (1220c), the light source substrates (1200A, 1200B) can be more easily managed when storing or transporting the light source substrates (1200A, 1200B).

[0364] For example, the connecting rib (1220c) may be provided to connect the protrusions (e.g., the first protrusion (1222a) and the second protrusion (1222b)) or the recessed portions (e.g., the first recessed portion (1223a) and the second recessed portion (1223b)) that face each other in the adjacent substrate bars (1220A, 1220B). For example, the connecting rib (1220c) may connect the shortest edge of the protrusions (e.g., the first protrusion (1222a) and the second protrusion (1222b)) in the direction of protrusion from the central extension (1221) of the substrate bar (1220) and the edge of the portion that is most adjacent in the width direction to the central extension (1221) of the first recessed portion (1223a) and the second recessed portion (1223b).

[0365] The connecting rib (1220c) is designed so that the rigidity is not too great, so that the manufacturer can easily remove the connecting rib (1220c) when necessary, thereby removing a pair of light source substrates (1200A, 1200B) connected by the connecting rib (1220c).

[0366] In this case, a cut surface may be formed by removing a connecting rib (1220c) in at least some of the first protrusion (1222a) and the second protrusion (1222b) or the first recess (1223a) and the second recess (1223b) provided on the substrate bars (1220A, 1220B) provided on a pair of light source substrates (1200A, 1200B). The position at which these cut surfaces are formed may vary depending on the position of the connecting rib (1220c). For example, the cut surfaces may be formed at the shortest edges protruding from the central extension (1221) of the substrate bar (1220) of the protrusions (e.g., the first protrusion (1222a) and the second protrusion (1222b)), and may be formed at the edges of the portions that are most adjacent in the width direction to the central extension (1221) of the recessed portions (e.g., the first recessed portion (1223a) and the second recessed portion (1223b)).

[0367] When the connecting rib (1220c) is removed in this way, a pair of light source substrates (1200A, 1200B) can be completely separated from each other as shown in FIG. 19.

[0368] By this process, multiple light source substrates (1200A, 1200B) can be manufactured from one substrate material (1200M), thereby preventing waste of materials and reducing manufacturing costs.

[0369] The method for manufacturing a light source substrate described with reference to FIGS. 16 to 19 is merely an example of a method for manufacturing a light source substrate included in a display device according to one embodiment of the present disclosure, and the embodiments of the present disclosure are not limited thereto.

[0370] FIG. 20 is a drawing illustrating a step of preparing a material for a substrate in a method for manufacturing a light source substrate of a display device according to one embodiment of the present disclosure.

[0371] Referring to FIG. 20, a light source substrate used in a display device (1) according to one embodiment of the present disclosure can be manufactured by a method of manufacturing only one light source substrate from one substrate material (1200M-1).

[0372] As illustrated in Fig. 20, only one light source substrate can be designed and obtained from one substrate material (1200M-1). Thereafter, one light source substrate can be separated from the substrate material (1200M-1) through a step of cutting along the edge of the light source substrate on the one substrate material (1200M-1) using a tool, thereby manufacturing one light source substrate.

[0373] The method for manufacturing a light source substrate described with reference to FIG. 20 is merely an example of a method for manufacturing a light source substrate included in a display device according to one embodiment of the present disclosure, and the embodiments of the present disclosure are not limited thereto.

[0374] FIG. 21 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0375] In describing a display device (1) according to one embodiment of the present disclosure with reference to FIG. 21, the same reference numerals are given to the configurations corresponding to the configurations of the embodiments described with reference to FIGS. 1 to 20, and repeated descriptions may be omitted.

[0376] Referring to FIG. 21, a light source module (1000-1) of a display device (1) according to one embodiment of the present disclosure may include a plurality of substrate bars (1220-1).

[0377] For example, the light source module (1000-1) may include a substrate body to which a plurality of substrate bars (1220-1) are each connected, and a repeated description thereof may be omitted.

[0378] Each of the plurality of substrate bars (1220-1) may have a width in the first direction (Z direction) and may extend long in the second direction (Y direction).

[0379] A plurality of substrate bars (1220-1) may be spaced apart from each other in a first direction (Z direction). For example, a plurality of substrate bars (1220-1) may be arranged such that the distances spaced apart from each other in the first direction (Z direction) are uniform.

[0380] For example, the plurality of substrate bars (1220-1) may be formed to have shapes that correspond to each other. For example, the plurality of substrate bars (1220-1) may have widths that correspond to each other in the first direction (Z direction). For example, the plurality of substrate bars (1220-1) may have lengths that correspond to each other extending in the second direction (Y direction). For example, the plurality of substrate bars (1220-1) may be formed to have sizes that correspond to each other.

[0381] For example, the distance in the first direction (Z direction) between a pair of adjacent substrate bars (1220A1-1, 1220A2-1) among the plurality of substrate bars (1220-1) may be set to be longer than the width of one substrate bar (1220-1) in the first direction (Z direction).

[0382] Each of the plurality of substrate bars (1220-1) may include a central extension portion (1221-1). The central extension portion (1221-1) may extend in a second direction (Y direction). The central extension portion (1221-1) may be provided to pass through the center of each of the plurality of substrate bars (1220-1) in the second direction (Y direction).

[0383] Each of the plurality of substrate bars (1220-1) may include a plurality of first protrusions (1222a-1) protruding from the central extension (1221-1). Each of the plurality of first protrusions (1222a-1) may protrude from one side of the central extension (1221-1) in the first direction (Z direction). Each of the plurality of first protrusions (1222a-1) may protrude from the central extension (1221-1) in the first direction (Z direction).

[0384] A plurality of first protrusions (1222a-1) may be arranged relative to each other in a second direction (Y direction). For example, a plurality of first protrusions (1222a-1) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0385] For example, the plurality of first protrusions (1222a-1) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of first protrusions (1222a-1) that protrude in the first direction (Z direction) from the central extension (1221-1) may correspond to each other.

[0386] A first side light source (1110) among a plurality of light sources (1100) mounted on a substrate bar (1220-1) can be mounted on a plurality of first protrusions (1222a-1).

[0387] A plurality of first-side light sources (1110) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first-side light sources (1110) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0388] Each of the plurality of substrate bars (1220-1) may include a plurality of second protrusions (1222b-1) protruding from the other side of the central extension (1221-1). Each of the plurality of second protrusions (1222b-1) may protrude from the other side of the central extension (1221-1) in the first direction (Z direction). Each of the plurality of second protrusions (1222b-1) may protrude from the central extension (1221-1) in the first direction (Z direction).

[0389] A plurality of second protrusions (1222b-1) may be arranged relative to each other in a second direction (Y direction). For example, a plurality of second protrusions (1222b-1) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0390] For example, the plurality of second protrusions (1222b-1) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of second protrusions (1222b-1) that protrude in the first direction (Z direction) from the central extension (1221-1) may correspond to each other.

[0391] A second side light source (1120) among a plurality of light sources (1100) mounted on a substrate bar (1220-1) can be mounted on a plurality of second protrusions (1222b-1).

[0392] A plurality of second side light sources (1120) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second side light sources (1120) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0393] By the structure as above, the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (1220A1-1, 1220A2-1) among a plurality of substrate bars (1220-1) can be reduced, and the brightness and uniformity of brightness of the display device (1) can be improved.

[0394] Each of the plurality of substrate bars (1220-1) may include a plurality of first recessed portions (1223a-1). Each of the plurality of first recessed portions (1223a-1) may be formed between a pair of adjacent first protrusions (1222a-1) among the plurality of first protrusions (1222a-1).

[0395] A plurality of first recessed portions (1223a-1) may be provided on one side of the central extension portion (1221-1) in the first direction (Z direction).

[0396] The plurality of first recessed portions (1223a-1) can be formed to have a shape that is relatively concave toward the inward direction of the central extension portion (1221-1) compared to the plurality of first protrusions (1222a-1).

[0397] A plurality of first recessed portions (1223a-1) may be arranged along a second direction (Y direction) with respect to each other. For example, a plurality of first recessed portions (1223a-1) may be arranged at equal intervals along a second direction (Y direction) with respect to each other.

[0398] For example, a plurality of first recessed portions (1223a-1) can be formed to have shapes that correspond to each other.

[0399] Each of the plurality of substrate bars (1220-1) may include a plurality of second recessed portions (1223b-1). Each of the second recessed portions (1223b-1) may be formed between a pair of adjacent second protrusions (1222b-1) among the plurality of second protrusions (1222b-1).

[0400] A plurality of second recessed portions (1223b-1) may be provided on the other side of the central extension portion (1221-1) in the first direction (Z direction).

[0401] The plurality of second recessed portions (1223b-1) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221-1) relatively compared to the plurality of second protrusions (1222b-1).

[0402] A plurality of second recessed portions (1223b-1) may be arranged along the second direction (Y direction). For example, a plurality of second recessed portions (1223b-1) may be arranged at equal intervals along the second direction (Y direction).

[0403] For example, a plurality of second recessed portions (1223b-1) can be formed to have shapes that correspond to each other.

[0404] For example, each of the plurality of first protrusions (1222a-1) may be arranged parallel to one of the second recessed portions (1223b-1) that is closest to the plurality of second recessed portions (1223b-1) in the first direction (Z). That is, the plurality of first protrusions (1222a-1) and the plurality of second recessed portions (1223b-1) may be arranged parallel to each other in the first direction (Z direction).

[0405] Also, as an example, each of the plurality of second protrusions (1222b-1) may be arranged parallel to one of the plurality of first recessed portions (1223a-1) that is closest to the first recessed portion (1223a-1) in the first direction (Z direction). That is, the plurality of second protrusions (1222b-1) and the plurality of first recessed portions (1223a-1) may be arranged parallel to each other in the first direction (Z direction).

[0406] At this time, as illustrated in FIG. 21, the shape of the edge of each of the plurality of first recessed portions (1223a-1) may be different from the shape of the edge of each of the plurality of second protrusions (1222b-1). In other words, the shape of the outer surface of each of the plurality of first recessed portions (1223a-1) may be different from the shape of the outer surface of each of the plurality of second protrusions (1222b-1).

[0407] The shape of each edge of the plurality of second recessed portions (1223b-1) may be different from the shape of each edge of the plurality of first protrusions (1222a-1). In other words, the shape of the outer surface of each of the plurality of second recessed portions (1223b-1) may be different from the shape of the outer surface of each of the plurality of first protrusions (1222a-1).

[0408] For example, the edges of each of the plurality of first protrusions (1222a-1) and the plurality of first recessed portions (1223a-1) may be formed in a linear shape. In addition, for example, the edges of each of the plurality of second protrusions (1222b-1) and the plurality of second recessed portions (1223b-1) may be formed in a curved shape.

[0409] For example, the edges of each of the plurality of first protrusions (1222a-1) and the plurality of first recessed portions (1223a-1) provided on one side in the +Z direction of one of the adjacent pair of substrate bars (1220A1-1, 1220A2-1) may have a shape corresponding to the edges of each of the plurality of first protrusions (1222a-1) and the plurality of first recessed portions (1223a-1) provided on one side in the +Z direction of the other substrate bar (1220A2-1).

[0410] Also, as an example, the edges of each of the plurality of second protrusions (1222b-1) and the plurality of second recessed portions (1223b-1) provided on one side of the -Z direction of one of the adjacent pair of substrate bars (1220A1-1, 1220A2-1) may have a shape corresponding to the edges of each of the plurality of second protrusions (1222b-1) and the plurality of second recessed portions (1223b-1) provided on one side of the -Z direction of the other substrate bar (1220A2-1).

[0411] By this structure, when manufacturing a plurality of light source substrates including the substrate bars (1220-1) illustrated in FIG. 21 from one substrate material in a similar manner to the method of manufacturing the light source substrate described with reference to FIGS. 16 to 19, the substrate bars (1220-1) positioned adjacent to each other in one substrate material can be easily separated from each other.

[0412] FIG. 22 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0413] In describing a display device (1) according to one embodiment of the present disclosure with reference to FIG. 22, the same drawing reference numerals are given to the configurations corresponding to the configurations of the embodiments described with reference to FIGS. 1 to 20, and repeated descriptions may be omitted.

[0414] Referring to FIG. 22, a light source module (1000-2) of a display device (1) according to one embodiment of the present disclosure may include a plurality of substrate bars (1220-2).

[0415] For example, the light source module (1000-2) may include a substrate body to which a plurality of substrate bars (1220-2) are each connected, and a detailed description thereof is omitted.

[0416] Each of the plurality of substrate bars (1220-2) may have a width in the first direction (Z) and may extend long in the second direction (Y).

[0417] The plurality of substrate bars (1220-2) may be spaced apart from each other in the first direction (Z). For example, the plurality of substrate bars (1220-2) may be arranged so that the distances spaced apart from each other in the first direction (Z) are uniform.

[0418] For example, the plurality of substrate bars (1220-2) may be formed to have shapes that correspond to each other. For example, the plurality of substrate bars (1220-2) may have widths that correspond to each other in the first direction (Z direction). For example, the plurality of substrate bars (1220-2) may have lengths that correspond to each other extending in the second direction (Y direction). For example, the plurality of substrate bars (1220-2) may be formed to have sizes that correspond to each other.

[0419] For example, the distance in the first direction (Z direction) between a pair of adjacent substrate bars (1220A1-2, 1220A2-2) among a plurality of substrate bars (1220-2) may be set to be longer than the width of one substrate bar (1220-2) in the first direction (Z direction), but is not limited thereto.

[0420] Each of the plurality of substrate bars (1220-2) may include a central extension portion (1221-2). The central extension portion (1221-2) may extend in a second direction (Y direction). The central extension portion (1221-2) may be provided to pass through the center of each of the plurality of substrate bars (1220-2) in the second direction (Y direction).

[0421] Each of the plurality of substrate bars (1220-2) may include a plurality of first protrusions (1222a-2) protruding from the central extension (1221-2). Each of the plurality of first protrusions (1222a-2) may protrude from one side of the central extension (1221-2) in the first direction (Z direction). Each of the plurality of first protrusions (1222a-2) may protrude from the central extension (1221-2) in the first direction (Z direction).

[0422] A plurality of first protrusions (1222a-2) may be arranged relative to each other in a second direction (Y direction). For example, a plurality of first protrusions (1222a-2) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0423] A first side light source (1110) among a plurality of light sources (1100) mounted on a substrate bar (1220-2) can be mounted on a plurality of first protrusions (1222a-2).

[0424] A plurality of first-side light sources (1110) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first-side light sources (1110) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0425] Each of the plurality of substrate bars (1220-2) may include a plurality of second protrusions (1222b-2) protruding from the other side of the central extension (1221-2). Each of the plurality of second protrusions (1222b-2) may protrude from the other side of the central extension (1221-2) in the first direction (Z direction). Each of the plurality of second protrusions (1222b-2) may protrude from the central extension (1221-2) in the first direction (Z direction).

[0426] A plurality of second protrusions (1222b-2) may be arranged relative to each other in a second direction (Y direction). For example, a plurality of second protrusions (1222b-2) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0427] A second side light source (1120) among a plurality of light sources (1100) mounted on a substrate bar (1220-2) can be mounted on a plurality of second protrusions (1222b-2).

[0428] A plurality of second side light sources (1120) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second side light sources (1120) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0429] By the above structure, the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (1220A1-2, 1220A2-2) among a plurality of substrate bars (1220-2) can be reduced, and the brightness and uniformity of brightness of the display device (1) can be improved.

[0430] Each of the plurality of substrate bars (1220-2) may include a plurality of first recessed portions (1223a-2). Each of the plurality of first recessed portions (1223a-2) may be formed between a pair of adjacent first protrusions (1222a-2) among the plurality of first protrusions (1222a-2).

[0431] A plurality of first recessed portions (1223a-2) may be provided on one side of the central extension portion (1221-2) in the first direction (Z direction).

[0432] The plurality of first recessed portions (1223a-2) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221-2) relatively compared to the plurality of first protrusions (1222a-2).

[0433] A plurality of first recessed portions (1223a-2) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first recessed portions (1223a-2) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0434] Each of the plurality of substrate bars (1220-2) may include a plurality of second recessed portions (1223b-2). Each of the second recessed portions (1223b-2) may be formed between a pair of adjacent second protrusions (1222b-2) among the plurality of second protrusions (1222b-2).

[0435] A plurality of second recessed portions (1223b-2) may be provided on the other side of the central extension portion (1221-2) in the first direction (Z direction).

[0436] The plurality of second recessed portions (1223b-2) can be formed to have a shape that is relatively concave toward the inward direction of the central extension portion (1221-2) compared to the plurality of second protrusions (1222b-2).

[0437] A plurality of second recessed portions (1223b-2) may be arranged along the second direction (Y direction). For example, a plurality of second recessed portions (1223b-2) may be arranged at equal intervals along the second direction (Y direction).

[0438] For example, each of the plurality of first protrusions (1222a-2) may be arranged parallel to one of the second recessed portions (1223b-2) that is closest to the plurality of second recessed portions (1223b-2) in the first direction (Z direction). That is, the plurality of first protrusions (1222a-2) and the plurality of second recessed portions (1223b-2) may be arranged parallel to each other in the first direction (Z direction).

[0439] Also, as an example, each of the plurality of second protrusions (1222b-2) may be arranged parallel to one of the plurality of first recessed portions (1223a-2) that is closest to the plurality of first recessed portions (1223a-2) in the first direction (Z direction). That is, the plurality of second protrusions (1222b-2) and the plurality of first recessed portions (1223a-2) may be arranged parallel to each other in the first direction (Z direction).

[0440] For example, the plurality of first protrusions (1222a-2) and the plurality of second protrusions (1222b-2) may be formed to have shapes that correspond to each other. For example, the lengths of the plurality of first protrusions (1222a-2) and the plurality of second protrusions (1222b-2) that protrude in the first direction (Z direction) from the central extension (1221-2) may correspond to each other.

[0441] For example, the plurality of first recessed portions (1223a-2) and the plurality of second recessed portions (1223b-2) may be formed to have shapes that correspond to each other. For example, the lengths of the plurality of first recessed portions (1223a-2) and the plurality of second recessed portions (1223b-2) that are sunk inwardly toward the central extension portion (1221) may correspond to each other.

[0442] At this time, as illustrated in FIG. 22, the curvature of the edges of each of the plurality of first protrusions (1222a-2), the plurality of second protrusions (1222b-2), the plurality of first recessed portions (1223a-2) and the plurality of second recessed portions (1223b-2) can be formed to be the same as each other.

[0443] When manufacturing a light source substrate including a substrate bar (1220-2) illustrated in FIG. 22, it may be more appropriate to manufacture only one light source substrate from one substrate material using a method similar to the method for manufacturing the light source substrate described with reference to FIG. 20. However, the embodiments of the present disclosure are not limited thereto, and even when manufacturing a light source substrate including a substrate bar (1220-2) illustrated in FIG. 22, it may be possible to manufacture a plurality of light source substrates from one substrate material by performing a method similar to the method for manufacturing the light source substrate described with reference to FIGS. 16 to 19 and then performing an additional cutting process or the like.

[0444] FIG. 23 is a diagram illustrating a configuration of a display device according to another embodiment of the present disclosure.

[0445] In describing a display device (1) according to one embodiment of the present disclosure with reference to FIG. 23, the same reference numerals are given to the configurations corresponding to the configurations of the embodiments described with reference to FIGS. 1 to 22, and repeated descriptions may be omitted.

[0446] Referring to FIG. 23, a light source module (1000-3) of a display device (1) according to one embodiment of the present disclosure may include a plurality of substrate bars (1220-3) and an interface board (1500) to which the plurality of substrate bars (1220-3) are each connected.

[0447] Each of the plurality of substrate bars (1220-3) may have a structure or characteristic corresponding to at least a portion of the substrate bar (1220) in the embodiment described with reference to FIGS. 1 to 20, the substrate bar (1220-1) in the embodiment described with reference to FIG. 21, and the substrate bar (1220-2) in the embodiment described with reference to FIG. 22, and a repeated description thereof may be omitted.

[0448] The interface board (1500) may be composed of a printed circuit board (PCB). For example, the interface board (1500) may be electrically connected to a control assembly (50) and / or a power assembly (60).

[0449] For example, the interface board (1500) may be placed at the front of the bottom chassis (15). For example, the interface board (1500) may be mounted on the bottom chassis (15).

[0450] For example, the interface board (1500) can extend in the first direction (Z direction).

[0451] For example, each of the plurality of substrate bars (1220-3) may be mounted on an interface board (1500). Unlike the embodiments described in FIGS. 1 to 23, in the embodiment of FIG. 23, each of the plurality of substrate bars (1220-3) is not formed integrally with the interface board (1500), but may be mounted and connected to the interface board (1500), electrically connected to the interface board (1500), and supported by the interface board (1500). In this connection, the interface board (1500) may also be referred to as a “substrate body.”

[0452] The interface board (1500) may include a terminal (1501) to which each of a plurality of substrate bars (1220-3) is provided to be coupled.

[0453] A terminal (1501) may be provided with a plurality of pins for signal and / or data transmission between a plurality of substrate bars (1220-3), a plurality of light sources mounted on the plurality of substrate bars (1220-3), and an interface board (1500).

[0454] Each of the plurality of substrate bars (1220-3) may include a bar connector configured to be coupled to a terminal (1501) of the interface board (1500). As the bar connector of each of the plurality of substrate bars (1220-3) is coupled to the terminal (1501) of the interface board (1500), each of the plurality of substrate bars (1220-3) may be connected to the interface board (1500).

[0455] For example, bar connectors of multiple substrate bars (1220-3) may be provided at each end.

[0456] With this structure, it is possible to separate each of the plurality of substrate bars (1220-3) from the interface board (1500), so when it is required to replace or repair some of the plurality of substrate bars (1220-3) or electronic components mounted thereon, it may be easy to replace or repair only some of them.

[0457] A display device (1) according to one embodiment of the present disclosure may include a display panel (20), a plurality of light sources (1100) arranged to irradiate light toward the display panel, and a plurality of substrate bars (1220) on which at least a portion of the plurality of light sources are mounted and arranged to be spaced apart from each other along a first direction (Z direction) which is the width direction of each. Each of the plurality of substrate bars may include a central extension portion (1221) extending in a second direction (Y direction) different from the first direction, a plurality of first protrusions (1222a) each protruding from one side of the central extension portion in the first direction toward the outside of the central extension portion, arranged along the second direction with respect to each other and on which some of the plurality of light sources are mounted, a plurality of first recessed portions (1223a) each formed between a pair of first protrusions adjacent to each other among the plurality of first protrusions, a plurality of second protrusions (1222b) each protruding from the other side of the central extension portion in the first direction toward the outside of the central extension portion, arranged along the second direction with respect to each other and on which some of the plurality of light sources are mounted, and a plurality of second recessed portions (1223b) each formed between a pair of second protrusions adjacent to each other among the plurality of second protrusions. The shape of the edge of each of the plurality of first recessed portions (1223a) may be different from the shape of the edge of each of the plurality of second protrusions (1222b). The shape of the edge of each of the plurality of second recessed portions (1223b) may be different from the shape of the edge of each of the plurality of first protrusions (1222a).

[0458] The edges of each of the plurality of first protrusions (1222a) and the edges of each of the plurality of second recessed portions (1223b) may have different curvatures at points corresponding to each other in the first direction (Z direction). The edges of each of the plurality of second protrusions (1222b) and the edges of each of the plurality of first recessed portions (1223a) may have different curvatures at points corresponding to each other in the first direction (Z direction).

[0459] For a first point on one of the plurality of first protrusions (1222a) and a second point on one of the plurality of second recesses (1223b), the first point and the second point may be positioned to correspond to each other in the first direction (Z direction), and the curvature at the first point may be greater than the curvature at the second point. For a third point on one of the plurality of second protrusions (1222b) and a fourth point on one of the plurality of first recesses (1223a), the third point and the fourth point may be positioned to correspond to each other in the first direction (Z direction), and the curvature at the third point may be greater than the curvature at the fourth point.

[0460] When an area defined by one first recessed portion among the plurality of first recessed portions and a pair of first protrusions adjacent to one first recessed portion among the plurality of first protrusions is referred to as a first recessed portion (1223a1), and an area defined by one second recessed portion among the plurality of second recessed portions and a pair of second protrusions adjacent to one second recessed portion among the plurality of second protrusions is referred to as a second recessed portion (1223b1), the size (A3) of the first recessed portion may be greater than the size (A2) of the second protrusion of one of the plurality of second protrusions. The size (A4) of the second recessed portion may be greater than the size (A1) of the first protrusion of one of the plurality of first protrusions.

[0461] Each of the plurality of first protrusions (1222a) may be arranged in parallel with one of the second recessed portions (1223b) that is most adjacent among the plurality of second recessed portions in the first direction. Each of the plurality of second protrusions (1222b) may be arranged in parallel with one of the first recessed portions (1223a) that is most adjacent among the plurality of first recessed portions in the first direction.

[0462] A distance in the first direction between a pair of adjacent substrate bars among the plurality of substrate bars may be set to be longer than a width of one of the plurality of substrate bars in the first direction.

[0463] The display device (1) may further include a substrate body (1210) to which the plurality of substrate bars are connected. Each of the plurality of substrate bars may extend from the substrate body in the second direction.

[0464] Some of the above plurality of light sources (1130) may be mounted on the substrate body.

[0465] Some of the light sources mounted on the substrate body may be arranged parallel to the plurality of light sources mounted on the plurality of first protrusions along the second direction. Others of the light sources mounted on the substrate body may be arranged parallel to the plurality of light sources mounted on the plurality of second protrusions along the second direction.

[0466] The substrate body may extend along the first direction. Each of the plurality of substrate bars may extend from one side of the substrate body in the second direction.

[0467] The above display device (1) may further include a connector (1300) mounted on the substrate body and electrically connected to the plurality of light sources. The connector may have a long side (1301) parallel to the first direction.

[0468] The display device (1) may further include a plurality of driving elements (1400) mounted on the front surface (1210F) of the substrate body facing the display panel and configured to control at least some of the light sources among the plurality of light sources. The plurality of driving elements may be arranged so that their positions in the first direction are different from each other. Some of the plurality of driving elements may be arranged so that their positions in the second direction are different from those of other portions of the plurality of driving elements.

[0469] The plurality of driving elements may include driving elements (1400A) of a first row arranged along the first direction, and driving elements (1400B) of a second row arranged along the first direction and spaced apart from the driving elements of the first row. Each driving element included in the driving elements (1400A) of the first row and each driving element included in the driving elements (1400B) of the second row may be arranged such that their positions in the second direction are spaced apart from each other.

[0470] The above display device (1) may further include a plurality of driving elements (1400-2) arranged to control at least some of the light sources among the plurality of light sources. The plurality of driving elements may be arranged on a rear surface (1210R) of the substrate body opposite to the front surface facing the display panel.

[0471] The above-described plurality of substrate bars may include a first substrate bar (1220A1) and a second substrate bar (1220A2) that are adjacent to each other. When one of the plurality of light sources mounted on one side of the first substrate bar adjacent to the second substrate bar among the first direction sides is referred to as a first light source (LS1), when one of the plurality of light sources mounted on the other side of the first substrate bar opposite to the second substrate bar among the first direction sides is referred to as a second light source (LS2), and when one of the plurality of light sources mounted on one side of the second substrate bar adjacent to the first substrate bar among the first direction sides is referred to as a third light source (LS3), the ratio of the distance (d2) between the first light source and the third light source to the distance (d1) between the first light source and the second light source may be 9 / 10 or more and 10 / 9 or less.

[0472] A display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (1100), and a plurality of substrate bars (1220) on which the plurality of light sources are mounted and arranged to be spaced apart from each other along a first direction (Z direction), and each extending along a second direction (Y direction) different from the first direction. Each of the plurality of substrate bars includes a central extension (1221) extending along the second direction, a plurality of first protrusions (1222a) each protruding from one side of the central extension in the first direction toward the outside of the central extension and arranged along the second direction, a plurality of second protrusions (1222b) each protruding from the other side of the central extension in the first direction toward the outside of the central extension and arranged along the second direction, a plurality of first recessed portions (1223a) each formed between a pair of first protrusions (1222a) adjacent to each other among the plurality of first protrusions (1222a) and having edges having different curvatures at points corresponding to each other in the first direction (Z direction) from the edges of each of the plurality of second protrusions (1222b), and a plurality of second protrusions (1222b) each formed between a pair of second protrusions (1222b) adjacent to each other among the plurality of second protrusions (1222b) and having the plurality of first Each edge of the protrusion (1222a) may include a plurality of second recessed portions (1223b) having edges with different curvatures at points corresponding to each other in the first direction (Z direction).

[0473] For a first point on one of the plurality of first protrusions (1222a) and a second point on one of the plurality of second recesses (1223b), the first point and the second point may be positioned to correspond to each other in the first direction (Z direction), and the curvature at the first point may be greater than the curvature at the second point. For a third point on one of the plurality of second protrusions (1222b) and a fourth point on one of the plurality of first recesses (1223a), the third point and the fourth point may be positioned to correspond to each other in the first direction (Z direction), and the curvature at the third point may be greater than the curvature at the fourth point.

[0474] The display device (1) may further include a substrate body (1210) to which the plurality of substrate bars are connected, and a connector (1300) mounted on the substrate body and electrically connected to the plurality of light sources. The connector may have a long side (1301) parallel to the first direction.

[0475] The display device (1) may further include a substrate body (1210) to which the plurality of substrate bars are connected, and a plurality of driving elements (1400) mounted on a front surface (1210F) of the substrate body facing the display panel and configured to control at least some of the plurality of light sources. The plurality of driving elements may be arranged so that their positions in the first direction are different from each other. Some of the plurality of driving elements may be arranged so that their positions in the second direction are different from those of other portions of the plurality of driving elements.

[0476] A display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (1100), and a plurality of substrate bars on which at least a portion of the plurality of light sources are mounted, each of which is spaced apart from one another along a first direction (Z direction) which is a width direction, and a plurality of substrate bars (1220) each of which extends in a second direction (Y direction) different from the first direction. Each of the plurality of substrate bars may include a plurality of first protrusions (1222a) formed on one side of each of the plurality of substrate bars in the first direction, arranged along the second direction and on which some of the plurality of light sources are mounted, a plurality of first recesses (1223a) each formed between a pair of first protrusions that are adjacent to each other among the plurality of first protrusions, a plurality of second protrusions (1222b) formed on the other side of each of the plurality of substrate bars in the first direction, arranged along the second direction and on which other some of the plurality of light sources are mounted, and a plurality of second recesses (1223b) each formed between a pair of second protrusions that are adjacent to each other among the plurality of second protrusions. When an area defined by one first recessed portion (1223a) of the plurality of first recessed portions and a pair of first protrusions (1222a) adjacent to one first recessed portion of the plurality of first protrusions is referred to as a first recessed portion (1223a1), and an area defined by one second recessed portion (1223b) of the plurality of second recessed portions and a pair of second protrusions (1222b) adjacent to one second recessed portion of the plurality of second protrusions is referred to as a second recessed portion (1223b1), the size (A3) of the first recessed portion and the size (A1) of the first protrusion of the plurality of first protrusions may be different. The size (A2) of the second recessed portion may be different from the size (A4) of the second protrusion of the plurality of second protrusions.

[0477] According to the invention of the present disclosure, the substrate bar of a display device can include a plurality of protrusions on which light sources are mounted, so that uniformity of brightness can be improved.

[0478] According to the idea of ​​the present disclosure, a plurality of light sources mounted on a substrate bar of a display device can be arranged so that the distance ratio between the light sources satisfies a predetermined range, thereby improving the uniformity of brightness.

[0479] According to the idea of ​​the present disclosure, a connector mounted on a substrate body of a display device is arranged in a direction parallel to the longitudinal direction of the substrate body, so that the amount of material used can be reduced and manufacturing costs can be reduced.

[0480] According to the idea of ​​the present disclosure, a plurality of driving elements mounted on a substrate body of a display device can have their mounting positions distributed on the front surface of the substrate body, thereby improving uniformity of brightness.

[0481] According to the invention of the present disclosure, the substrate bar of the display device can include a plurality of protrusions and a plurality of recesses, respectively, so that the amount of material used can be reduced while improving the uniformity of brightness.

[0482] According to the idea of ​​the present disclosure, a plurality of protrusions and a plurality of recesses provided on a substrate bar of a display device have edges of different shapes, so that the amount of material used can be reduced or the manufacturing process can be simplified, and the manufacturing cost of the product can be reduced.

[0483] The above has described non-limiting embodiments of the present disclosure with reference to the drawings. However, the present disclosure is not limited to the above-described embodiments, and those skilled in the art will appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Display panel; a plurality of light sources configured to irradiate light toward the display panel; and A plurality of substrate bars on which the plurality of light sources are mounted, comprising a plurality of substrate bars spaced apart from each other along a first direction, which is a width direction of the plurality of substrate bars; Each of the above plurality of substrate bars, A central extension extending in a second direction different from the first direction; A plurality of first protrusions protruding from one side of the central extension in the first direction toward the outside of the central extension, arranged along the second direction with respect to each other, and on which a first side light source among the plurality of light sources is arranged; A plurality of first recessed portions, each of which is positioned between a pair of adjacent first protrusions among the plurality of first protrusions; A plurality of second protrusions protruding toward the outside of the central extension from the other side opposite to the first side of the central extension in the first direction, arranged along the second direction, and on which a second side light source among the plurality of light sources is arranged; and Each of the plurality of second recessed portions includes a plurality of second protrusions, each of which is positioned between a pair of adjacent second protrusions among the plurality of second protrusions; The shape of the edge of each of the plurality of first recessed portions is different from the shape of the edge of each of the plurality of second protrusions, A display device wherein the shape of the edge of each of the plurality of second recessed portions is different from the shape of the edge of each of the plurality of first protrusions.

2. In paragraph 1, The edges of each of the plurality of first protrusions and the edges of each of the plurality of second recesses have different curvatures at points corresponding to each other in the first direction, A display device in which the edges of each of the plurality of second protrusions and the edges of each of the plurality of first recessed portions have different curvatures at points corresponding to each other in the first direction.

3. In paragraph 2, One of the plurality of first protrusions comprises a first point, One of the plurality of second recessed portions includes a second point, One of the second protrusions of the plurality of second protrusions comprises a third point, One of the plurality of first recessed portions includes a fourth point, The first point and the second point correspond to each other in the first direction, and the curvature of the first protrusion at the first point is greater than the curvature of the second recess at the second point. A display device wherein the third point and the fourth point correspond to each other in the first direction, and the curvature of the second protrusion at the third point is greater than the curvature of the first recessed portion at the fourth point.

4. In paragraph 1, The first recessed region is defined by a first recessed portion of one of the plurality of first recessed portions and a pair of first protrusions adjacent to the first recessed portion of the plurality of first protrusions, The second recessed region is defined by a second recessed portion of one of the plurality of second recessed portions and a pair of second protrusions adjacent to the second recessed portion of one of the plurality of second protrusions, The size of the first recessed area is larger than the size of one of the second protrusions among the plurality of second protrusions, A display device wherein the size of the second recessed area is larger than the size of one of the plurality of first protrusions.

5. In paragraph 1, Each of the plurality of first protrusions is arranged parallel to one of the plurality of second recessed portions that is most adjacent to the first recessed portion in the first direction, A display device in which each of the plurality of second protrusions is arranged parallel to one of the plurality of first recessed portions that is most adjacent to the first recessed portion in the first direction.

6. In paragraph 1, A display device, wherein a distance between a pair of adjacent substrate bars among the plurality of substrate bars in the first direction is provided to be longer than a width of one substrate bar among the plurality of substrate bars in the first direction.

7. In paragraph 1, Further comprising a substrate body to which the plurality of substrate bars are connected; A display device in which each of the plurality of substrate bars extends in the second direction from the substrate body.

8. In paragraph 7, Further comprising an additional light source configured to irradiate light toward the display panel; A display device in which the above additional light source is mounted on the substrate body.

9. In paragraph 8, Some of the above additional light sources are arranged parallel to the first side light sources along the second direction, A display device in which another part of the additional light source is arranged in parallel along the second direction with a plurality of light sources mounted on the plurality of second protrusions.

10. In paragraph 7, The above substrate body extends in the first direction, A display device in which each of the plurality of substrate bars extends from one side of the substrate body in the second direction.

11. In paragraph 7, Further comprising a connector disposed on the substrate body and electrically connected to the plurality of light sources; A display device wherein the connector is elongated in the first direction.

12. In paragraph 7, Further comprising a plurality of driving elements arranged on one side of the substrate body facing the display panel and configured to control at least a portion of the plurality of light sources; The positions of the plurality of driving elements are different from each other in the first direction, A display device wherein the positions of some of the driving elements among the plurality of driving elements are different from the positions of some of the driving elements among the other plurality of driving elements in the second direction.

13. In paragraph 12, The above plurality of driving elements are, A first row of driving elements arranged along the first direction, Including a second row of driving elements spaced apart from the driving elements of the first row and arranged along the first direction, A display device in which the positions of each driving element included in the driving elements of the first column and the positions of each driving element included in the driving elements of the second column are different from each other in the second direction.

14. In paragraph 7, Further comprising a plurality of driving elements arranged to control at least a portion of the plurality of light sources; A display device in which the plurality of driving elements are arranged on a back surface of the substrate body facing away from the display panel.

15. In paragraph 1, The above plurality of substrate bars include a first substrate bar and a second substrate bar adjacent to each other, Among the plurality of light sources, the first light source is disposed on the first side adjacent to the second substrate bar of the first substrate bar in the first direction, Among the plurality of light sources, the second light source is disposed on a second side opposite to the first side of the first substrate bar and is the light source closest to the first light source on the second side; The third light source among the plurality of light sources is disposed on the first side adjacent to the first side of the first substrate bar of the second substrate bar in the first direction and is the light source closest to the first light source on the first side of the second substrate bar. A display device wherein a ratio of the distance between the first light source and the third light source to the distance between the first light source and the second light source is 9 / 10 or more and 10 / 9 or less.

Images