Display apparatus

Abstract

A display apparatus according to an aspect of the present disclosure may include: a display panel; a plurality of light sources which are configured to emit light toward the display panel and include first light sources and second light sources; and a plurality of substrate bars to which the plurality of light sources are mounted, wherein each of the plurality of substrate bars includes: a central extension part extending in a first direction; a first protruding part protruding in a second direction different from the first direction from the central extension part so as to allow the first light sources to be mounted thereto; and a second protruding part protruding in a third direction opposite to the second direction from the central extension part so as to allow the second light sources to be mounted thereto. Some of the plurality of substrate bars may have a shape from the first light source to the first protruding part and a shape from the second light source to the second protruding part, the shapes being different.

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] One aspect of the present disclosure provides a display device in which a light source substrate can be stably fixed within a main body.

[0007] One aspect of the present disclosure provides a display device having an improved structure so as to improve uniformity of brightness.

[0008] One aspect of the present disclosure provides a display device having an improved structure that can reduce the cost of the product and / or the manufacturing cost.

[0009] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0010] A display device according to one aspect of the present disclosure includes a display panel, a plurality of light sources configured to irradiate light toward the display panel, the plurality of light sources including first light sources and second light sources, and a plurality of substrate bars on which the plurality of light sources are mounted, wherein each of the plurality of substrate bars may include a central extension portion extending in a first direction, a first protrusion portion protruding in a second direction different from the first direction from the central extension portion so that the first light source is mounted, and a second protrusion portion protruding in a third direction opposite to the second direction from the central extension portion so that the second light source is mounted.

[0011] Some of the plurality of substrate bars may have different shapes from the first light source to the first protrusion and different shapes from the second light source to the second protrusion.

[0012] A display device according to one aspect of the present disclosure includes a display panel, a plurality of light sources including a first light source and a second light source for irradiating light toward the display panel, and a substrate bar on which the plurality of light sources are mounted, wherein the substrate bar may include a central extension portion extending in a first direction, a first protrusion portion protruding from the central extension portion in a second direction and on which the first light source is mounted, and a second protrusion portion protruding from the central extension portion in a third direction and on which the second light source is mounted.

[0013] The distance from the first light source to the edge of the first protrusion and the distance from the second light source to the edge of the second protrusion may be different.

[0014] A display device according to one aspect of the present disclosure includes a display panel, a bottom chassis configured to support the display panel, a middle mold coupled to the bottom chassis at an edge of the bottom chassis, a light source substrate disposed on the bottom chassis and having a light source mounted thereon, and a plurality of bar fixers configured to fix the light source substrate to the bottom chassis, wherein the light source substrate includes a substrate body extending in a first direction, a plurality of central extensions spaced apart from each other in the first direction and extending in a second direction from the substrate body so that the plurality of bar fixers are disposed, a first protrusion protruding from a first side of each of the plurality of central extensions, and a plurality of second protrusions protruding from a second side of each of the plurality of central extensions, and the plurality of first protrusions and the plurality of second protrusions can be disposed between the middle mold and the bottom chassis so that the light source substrate is fixed.

[0015] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0016] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0017] FIG. 3 is a cross-sectional view of a display panel of a display device according to one embodiment of the present disclosure.

[0018] FIG. 4 is an enlarged view of a backlight unit of a display device according to one embodiment of the present disclosure.

[0019] FIG. 5 is a schematic diagram illustrating the combination of a light source and a reflective sheet of a display device according to one embodiment of the present disclosure.

[0020] FIG. 6 is a drawing illustrating a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0021] FIG. 7 is an enlarged view of a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0022] 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.

[0023] 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.

[0024] FIG. 10 is an enlarged view of a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0025] FIG. 11 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0026] FIG. 12 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0027] FIG. 13 is a cross-sectional view of a display device according to one embodiment of the present disclosure.

[0028] FIG. 14 is an enlarged view of a portion of a substrate bar and bottom chassis of a display device according to one embodiment of the present disclosure.

[0029] FIG. 15 is an enlarged view illustrating a substrate bar and a bar fixer coupled thereto of a display device according to one embodiment of the present disclosure.

[0030] FIG. 16 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0031] FIG. 17 is a schematic diagram of a light source substrate of a display device according to one embodiment of the present disclosure.

[0032] The embodiments described in this disclosure and the configurations illustrated in the drawings are merely preferred examples of the disclosure, and there may be various modified examples that can replace the embodiments and drawings of the disclosure at the time of filing of this application.

[0033] Additionally, the same reference numbers or symbols presented in each drawing of the present disclosure represent parts or components that perform substantially the same function.

[0034] In addition, the terminology used in this disclosure is used to describe embodiments and is not intended to limit and / or restrict the disclosure. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this disclosure, terms such as "comprise" or "have" are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the disclosure, but do not preemptively exclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0035] Additionally, in the present disclosure, each of the phrases such as “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 among those phrases, or all possible combinations thereof.

[0036] Additionally, the term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0037] Additionally, terms including ordinal numbers such as "first," "second," etc., used in this disclosure 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.

[0038] Furthermore, the meaning of "identical" in this disclosure includes having similar properties or being similar within a certain range. Furthermore, "identical" means "substantially identical." "Substantially identical" should be understood to include values ​​that fall within the manufacturing error range or values ​​that differ from a reference value within a range that has no significance.

[0039] Additionally, terms such as "~part", "~device", "~block", "~absence", and "~module" may refer to a unit that processes at least one function or operation. For example, the terms may refer to at least one hardware such as an FPGA (field-programmable gate array) / ASIC (application specific integrated circuit), at least one software stored in a memory, or at least one process processed by a processor.

[0040] Meanwhile, the terms “front,” “rear,” “left,” and “right” used in the description below are defined based on the drawing, and the shape and position of each component are not limited by these terms.

[0041] In addition, the terms "first direction," "second direction," and "third direction" 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, although the first direction is described as indicating a horizontal direction, this may be an up-down direction or a front-back direction. In addition, although the second direction and the third direction are described as upward and / or downward directions that are perpendicular to and opposite to the first direction, this may be a left-right direction or a front-back direction.

[0042] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the attached drawings.

[0043] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0044] 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. The display device (1) may include a television (TV). However, the display device (1) is not limited thereto. For example, the display device (1) may 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.

[0045] 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.

[0046] In Fig. 1, the display device (1) is described as a flat display device with a flat screen as an example, but is not limited thereto, and the display device according to the present disclosure can also be applied to a curved display device or a bendable or flexible display device in which the flat state and the curved state can be changed. In addition, the configuration of the present disclosure can be applied to display devices of various shapes regardless of the screen size or ratio of the display device.

[0047] 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.

[0048] 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.

[0049] A display device (1) according to one embodiment may include a main body (11) and a screen (12) that displays an image (I).

[0050] 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.

[0051] 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).

[0052] 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.

[0053] 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.

[0054] Each of the plurality of pixels (P) can emit light of different brightness and different colors. For example, each of the plurality of pixels (P) can be divided into sub-pixels (P R , P G , P B) may include sub-pixels (P R , P G , P B ) is a red sub-pixel (P) that can emit red light. R ), a green sub-pixel (P) capable of emitting green light G ) and blue sub-pixels (P) capable of emitting blue light. B ) can include. 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.

[0055] 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.

[0056] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0057] 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. The main body (11) may include a middle mold (14), a bottom chassis (15), and / or a rear cover (16).

[0058] For example, the display device (1) may include a display panel (20). The display panel (20) may be provided on the front side of the main body (11). The display panel (20) may form the front part of the display device (1). The display panel (20) may be provided to display an image (I). For example, the screen (12) may be formed on the front side of the display panel (20).

[0059] The display panel (20) may have a roughly rectangular shape. For example, the display panel (20) may have a shape in which the lengths of the horizontal and vertical sides are different from each other. That is, the display panel (20) may be provided to have a long side and a short side. The display panel (20) may be provided in a rectangular plate shape. However, the present invention is not limited thereto, and the display panel (20) may also be provided in a square plate shape in which the lengths of the long sides and the short sides are almost equal.

[0060] The display panel (20) can be provided in various sizes. The ratio of the long side to the short side of the display panel (20) is not limited to general cases such as 16:9 or 4:3, but can be provided in any arbitrary ratio.

[0061] In a display device (1) according to one embodiment of the present disclosure, for example, the display panel (20) may be configured as a panel of a light-emitting display type such as a liquid crystal display (LCD).

[0062] On one side of the display panel (20), a cable (20a) for transmitting image data to the display panel (20) and a display driver integrated circuit (DDI) (30) (hereinafter, 'driver IC') for processing digital image data and outputting an analog image signal may be provided.

[0063] The cable (20a) can electrically connect between the control assembly (50) / 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.

[0064] The driver IC (30) can receive image data and power from the control assembly (50) / power assembly (60) through the cable (20a), and transmit image data and driving current to the display panel (20) through the cable (20a).

[0065] 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 (20b). However, this is not limited thereto, and the driver IC (30) may be placed on the display panel (20).

[0066] 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 within 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. The display panel (20) may block or allow light emitted from the backlight unit (100) to pass through. The backlight unit (100) may be a light source device (100).

[0067] 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.

[0068] The backlight unit (100) may include a light source module (1000). The light source module (1000) may generate and emit light. For example, the light source module (1000) may be configured to emit monochromatic light or white light.

[0069] The light source module (1000) may include a plurality of light sources (1100) arranged to irradiate light and a light source substrate (1200) on which the plurality of light sources (1100) are mounted (see FIG. 4, etc.).

[0070] 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. For example, the reflective sheet (120) may be attached to the front surface of the light source module (1000). The reflective sheet (120) may be attached to the front surface of the light source substrate (1200).

[0071] For example, the light source module (1000) (e.g., 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) 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).

[0072] Alternatively, when light emitted from a light source module (1000) passes through various objects such as a diffuser plate (130) and an optical sheet (140), some of it may be reflected from the surface of the diffuser plate (130) and the optical sheet (140), and the reflective sheet (120) may reflect the reflected light forward again for this reason.

[0073] The backlight unit (100) may include a diffuser plate (130) that is provided to evenly 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 the light emitted from the light source module (1000) and then emit it forward.

[0074] 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.

[0075] The diffuser plate (130) and the optical sheet (140) can be optical members.

[0076] 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 within the main body (11).

[0077] 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).

[0078] The power assembly (60) can supply power to the display panel (20) and the backlight unit (100) so that the backlight unit (100) outputs light and the display panel (20) blocks or passes light from the backlight unit (100).

[0079] 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.

[0080] The display device (1) may include a display case that is provided to support various components of the main body (11). 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).

[0081] 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).

[0082] 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 combined with a middle mold (14). 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).

[0083] 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 SUS, or a plastic material such as ABS.

[0084] The display device (1) may include a middle mold (14). The middle mold (14) may be coupled to a bottom chassis (15). For example, the middle mold (14) may be hook-coupled and / or mounted to the bottom chassis (15). The middle mold (14) may support a display panel (20) and / or a backlight unit (100). The middle mold (14) may form a frame of the display device. For example, the middle mold (14) may be disposed on the frame of the bottom chassis (15) to support and fix at least some components of the backlight unit (100).

[0085] 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.).

[0086] 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 present disclosure is not limited thereto.

[0087] FIG. 3 is a cross-sectional view of a display panel of a display device according to one embodiment of the present disclosure.

[0088] 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).

[0089] 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).

[0090] 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).

[0091] The first transparent substrate (22) and the second transparent substrate (28) can fix and support a pixel electrode (23), a thin film transistor (24), a liquid crystal layer (25), a common electrode (26), and a color filter (27). The first and second transparent substrates (22, 28) can be made of reinforced glass or transparent resin.

[0092] 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).

[0093] 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).

[0094] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0095] 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 (PG ) 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.

[0096] 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).

[0097] 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.

[0098] 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 (Ag 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 (22).

[0099] 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).

[0100] 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.

[0101] 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).

[0102] 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).

[0103] 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).

[0104] The structure of the display panel (20) described above with reference to FIG. 3 is only 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 present disclosure is not limited thereto.

[0105] FIG. 4 is an enlarged view of a backlight unit of a display device according to one embodiment of the present disclosure.

[0106] 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).

[0107] 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).

[0108] The light source (1100) may be arranged to irradiate light toward the display panel (20). The light source (1100) may include 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).

[0109] 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 be electrically connected to the light sources (1100). The light source substrate (1200) can supply power to each light source (1100) for the light sources (1100) to emit light.

[0110] 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).

[0111] 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) may be, for example, a side of the light source substrate (1200) facing the display panel (20). The light source (1100) may be mounted on the light source substrate (1200) so as to face forward and irradiate light forward.

[0112] The reflective sheet (120) may be arranged in front of the light source substrate (1200). For example, the reflective sheet (120) may be adhered to the front surface of the light source substrate (1200). 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). Accordingly, 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). The through hole (120a) can be an LED hole (120a).

[0113] The reflective sheet (120) can reflect light emitted from the light source (1100) toward the reflective sheet (120) toward the diffuser plate (130).

[0114] 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.

[0115] Below, the detailed structure of the light source (1100) and the light source substrate (1200) is described as an example.

[0116] 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.

[0117] 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).

[0118] 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).

[0119] 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.

[0120] 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.

[0121] 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 flip-chip type light emitting diode (1101).

[0122] For example, the light source substrate (1200) can be formed by alternately stacking a non-conductive insulation layer and a conductive conduction layer.

[0123] 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).

[0124] 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.

[0125] 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).

[0126] 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.

[0127] 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).

[0128] For example, a window may be formed in the protective layer of the light source substrate (1230) to allow a portion of the power supply line (1230) to be exposed to the outside. The power supply pad (1240) may be electrically connected to a portion of the power supply line (1230) exposed to the outside of the light source substrate (1200).

[0129] 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).

[0130] 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.

[0131] 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.

[0132] 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).

[0133] 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.

[0134] 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).

[0135] 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 the concept of the present disclosure may have, and the concept of the present disclosure is not limited thereto.

[0136] FIG. 5 is a schematic diagram illustrating the combination of a light source and a reflective sheet of a display device according to one embodiment of the present disclosure.

[0137] Referring to FIG. 5, a plurality of supporter holes (120b) may be formed in the reflective sheet (120) at positions corresponding to the supporters (150). The supporters (150) may protrude through the supporter holes (120b) to support the diffuser plate (130) and / or the optical sheet (140). The supporters (150) may be positioned in the supporter holes (120b).

[0138] For example, as illustrated in the upper part of FIG. 5, during the assembly process of the reflective sheet (120) and the light source module (1000), a plurality of light sources (1100) of the light source module (1000) are inserted into a plurality of light source penetration holes (120a) formed in the reflective sheet (120), and the supporter (150) is inserted into the supporter hole (120b). Therefore, as illustrated in the lower part of FIG. 5, the substrate (1200) of the light source module (1000) is positioned at the rear of the reflective sheet (120), but the plurality of light sources (1100) of the light source module (1000) can be positioned at the front of the reflective sheet (120). The plurality of light sources (1100) can emit light at the front of the reflective sheet (120).

[0139] A plurality of light sources (1100) can emit light in various directions in front of the reflective sheet (120). Light can be emitted from the light sources (1100) toward the diffuser plate (130) as well as from the light sources (1100) toward the reflective sheet (120), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffuser plate (130).

[0140] Light emitted from a light source (1100) passes through various objects such as a diffuser plate (130) and an optical sheet (140). When the light passes through the diffuser plate (130) and the optical sheet (140), some of the incident light is reflected from the surfaces of the diffuser plate (130) and the optical sheet (140). The reflective sheet (120) can reflect the light reflected by the diffuser plate (130) and the optical sheet (140).

[0141] FIG. 6 is a diagram illustrating a light source substrate and a bottom chassis of a display device according to an embodiment of the present disclosure. FIG. 7 is an enlarged view of a display device according to an 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 an embodiment of the present disclosure. FIG. 9 is an enlarged view of a portion of a light source substrate of a display device according to an embodiment of the present disclosure. FIG. 10 is an enlarged view of a light source substrate and a bottom chassis of a display device according to an embodiment of the present disclosure. FIG. 11 is an enlarged view of a portion of a light source substrate of a display device according to an embodiment of the present disclosure. FIG. 12 is an enlarged view of a portion of a light source substrate of a display device according to an embodiment of the present disclosure.

[0142] Fig. 7 is an enlarged view of area A in the display device illustrated in Fig. 6. Fig. 8 is an enlarged view of area C in the display device illustrated in Fig. 7. Fig. 9 is a drawing of the display device illustrated in Fig. 8 with the bottom chassis omitted. Fig. 10 is an enlarged view of area B in the display device illustrated in Fig. 6. Fig. 11 is an enlarged view of area D in the display device illustrated in Fig. 10. Fig. 12 is a drawing of the display device illustrated in Fig. 11 with the bottom chassis omitted.

[0143] Referring to FIGS. 6 to 12, a display device (1) according to one embodiment of the present disclosure may include a plurality of light source modules (1000).

[0144] A plurality of light source modules (1000) can be arranged in front of the bottom chassis (15). The plurality of light source modules (1000) can be mounted on the bottom chassis (15), respectively. For example, the plurality of light source modules (1000) can be fixed to the bottom chassis (15) by the fixer (201) and the middle mold (14), respectively, and can be supported by the bottom chassis (15) (see FIGS. 13 to 15).

[0145] 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.

[0146] For example, among the plurality of light source modules (1000), a light source module (1000A) positioned on the right side (+Y direction side) of the display device (1) 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 to be opposite to each other in the vertical and horizontal directions (for example, to be positioned in a state where they are rotated 180 degrees relative to the X axis). According to this arrangement, the plurality of light source modules (1000) may be arranged to be symmetrical 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) may be uniformly provided.

[0147] 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.

[0148] However, this is not limited thereto, and at least some of the plurality of light source modules (1000) may be formed to have different shapes.

[0149] Although FIG. 6 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 that shown in FIG. 6. For example, the number of light source modules (1000) included in the display device (1) may be greater or less than that shown in FIG. 6. Alternatively, for example, the display device (1) may include only one integrally formed light source module (1000).

[0150] 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).

[0151] 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).

[0152] 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.

[0153] 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) may mean one surface of the plurality of substrate bars (1220) facing the display panel (20).

[0154] 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.

[0155] 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 one direction (Z). For example, one direction (Z) in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other may be approximately parallel to the vertical direction (e.g., up-down direction) of the display device (1). The plurality of substrate bars (1220) may be arranged to be parallel at a position spaced apart from each other. The direction in which the plurality of substrate bars (1220) are arranged may be a second direction (Z) or a third direction (-Z).

[0156] Each of the plurality of substrate bars (1220) may be formed to have approximately a bar shape. For example, each of the plurality of substrate bars (1220) may have a width in the second direction (Z) or the third direction (-Z), and may extend in a direction (Y) different from the second and third directions (Z, -Z). The direction in which the plurality of substrate bars (1220) extend may be the first direction (Y). For example, each of the plurality of substrate bars (1220) may have a shape in which a length in the first direction (Y) is longer than a width in the second direction (Z) or the third direction (-Z).

[0157] For example, the width direction of each of the plurality of substrate bars (1220) may be approximately parallel to the vertical direction (e.g., 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 (e.g., left-right direction) of the display device (1).

[0158] 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).

[0159] The direction in which the plurality of substrate bars (1220) are arranged 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 spaced apart from each other along the first direction (Z), which is the respective width direction.

[0160] 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. For example, each of the plurality of substrate bars (1220) may extend in a direction (Y direction) orthogonal to the direction (Z direction) in which the plurality of substrate bars (1220) are spaced apart from each other. For example, the first direction, the second direction, and the third direction described above may be directions orthogonal to each other. Additionally, for example, the second direction and the third direction may be directions parallel to each other.

[0161] 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.

[0162] For example, a plurality of substrate bars (1220) may be arranged so that the distances spaced apart from each other in the second direction (Z) are uniform. In other words, the distances in the second direction (Z) between adjacent pairs of substrate bars (1220) among the plurality of substrate bars (1220) may all be approximately the same. As a result, the uniformity of the luminance of the display device (1) may be improved.

[0163] 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 second direction (Z direction). For example, the plurality of substrate bars (1220) may have lengths that correspond to each other extending in the first direction (Y direction). For example, the plurality of substrate bars (1220) may be formed to have sizes that correspond to each other.

[0164] 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.

[0165] A reflective sheet (120) may be attached to the front surface of each of the plurality of substrate bars (1220).

[0166] 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.

[0167] 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).

[0168] 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 first direction (Y) 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 first direction (Y).

[0169] For example, the substrate body (1210) may extend along the second direction (Z). For example, the substrate body (1210) may have a shape in which the length in the second direction (Z) is longer than the width in the first direction (Y). In this case, the substrate body (1210) may have a structure in which a greater number of substrate bars (1220) are connected as the substrate body (1210) extends along the 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 first direction (Y), which is the width direction of the substrate body (1210) (e.g., the direction in which the length is relatively short).

[0170] For example, the substrate body (1210) may be mounted on the bottom chassis (15). In addition, the substrate body (1210) may be positioned between the middle mold (14) and the bottom chassis (15) and fixed within the display device (1). As the substrate body (1210) maintains a fixed position, the plurality of light sources (1100) mounted on the substrate body (1210) may be stably positioned at their respective designed positions. In addition, the plurality of substrate bars (1220) connected to the substrate body (1210) may be more stably supported by the substrate body (1210).

[0171] 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) may mean one surface of the substrate body (1210) facing the display panel (20).

[0172] 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.

[0173] 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 present invention is not limited thereto, and a plurality of reflective sheets (120) that are distinct from each other may be attached to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220).

[0174] 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).

[0175] For example, the connector (1300) may be mounted on the substrate body (1210). For example, the connector (1300) may be mounted on the back surface of the substrate body (1210) facing the bottom chassis (15).

[0176] As described above, since a reflective sheet (120) may be attached to the front surface of the substrate body (1210), when 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.

[0177] 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 an integral printed circuit board including the substrate body (1210) and the plurality of substrate bars (1220). However, alternatively, the substrate body (1210) and the plurality of substrate bars (1220) may be connected through a process of assembling each other as separate components that are not formed integrally with each other.

[0178] The structure of the light source module (1000), such as the substrate body (1210) and substrate bar (1220) described above, is only an example, and the present disclosure is not limited thereto.

[0179] For example, each of the plurality of substrate bars (1220) may extend in the -Y direction from the substrate body (1210), or the plurality of substrate bars (1220) may extend in the +Y direction from the substrate body (1210).

[0180] Additionally, although an embodiment is shown 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).

[0181] In addition, although an embodiment is illustrated in which each of the plurality of substrate bars (1220) extends in a 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 a 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).

[0182] In addition, unlike what has been described above, the second direction, which is the width direction of each of the plurality of substrate bars (1220), or the second direction in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other, or the second direction in which the substrate body (1220) extends, or the first 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).

[0183] However, for convenience of explanation, the second direction is described based on an embodiment in which the second direction is parallel to the vertical direction (Z direction) of the display device (1), and the first direction is parallel to the horizontal direction (Y direction) of the display device (1).

[0184] Below, the position and structure of one of the plurality of substrate bars (1220) are described. The structure of the substrate bar (1220) described below can be applied to correspond to the structure of each of the plurality of substrate bars (1220).

[0185] The substrate bar (1220) may be arranged between the middle mold (14) and the bottom chassis (15) in one direction. For example, at least a portion of the substrate bar (1220) may be arranged between the middle mold (14) and the bottom chassis (15) in the front-back direction. The middle mold (14), the substrate bar (1220), and the bottom chassis (15) may be arranged sequentially along the front-back direction.

[0186] The substrate bar (1220) may include a central extension portion (1221) extending in one direction and protrusions (1222, 1223) protruding from the central extension portion (1221). The central extension portion (1221) and the protrusions (1222, 1223) may each constitute a portion of the light source substrate (1200) as a portion of the substrate bar (1220).

[0187] The central extension (1221) may extend in a first direction (e.g., the Y direction and / or the -Y direction). The width direction of the central extension (1221) may be parallel to the second and third directions (e.g., the Z direction and / or the -Z direction). The central extension (1221) may have a shape in which the extension length in the first direction (e.g., the Y direction) is longer than the width in the second direction (e.g., the Z direction).

[0188] A central extension (1221) may be provided at the center of the substrate bar (1220). The central extension (1221) may include a region extending through the center of the substrate bar (1220) in a first direction (e.g., Y direction).

[0189] For example, the central extension (1221) may include an area having a roughly rectangular bar shape.

[0190] The substrate bar (1220) may include a plurality of first protrusions (1222) that protrude from one side (the first side) of the central extension (1221). Each of the plurality of first protrusions (1222) may protrude from one side of the central extension (1221) in a second direction (e.g., the Z direction). Each of the plurality of first protrusions (1222) may extend from the central extension (1221) in the second direction (e.g., the Z direction). For example, each of the plurality of first protrusions (1222) may extend upward from an upper side of the central extension (1221).

[0191] For example, the first protrusion (1222) can be formed integrally with the central extension (1221).

[0192] A plurality of first protrusions (1222) may be arranged relative to each other along a first direction (e.g., Y direction). For example, a plurality of first protrusions (1222) may be arranged such that their positions in the second direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0193] For example, a plurality of first protrusions (1222) may be arranged at equal intervals along a first direction (e.g., Y direction).

[0194] For example, the plurality of first protrusions (1222) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of first protrusions (1222) protruding from the central extension (1221) in the second direction (e.g., the Z direction) may correspond to each other.

[0195] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of first protrusions (1222). Hereinafter, the light source mounted on each of the plurality of first protrusions (1222) 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 (1222), but is not limited thereto. The first-side light source (1110) may be the first light source (1110).

[0196] A plurality of first side light sources (1110) may be arranged at positions spaced apart from the central extension (1221) in the second direction (Z direction). The plurality of first side light sources (1110) may be arranged to be deflected upward from the central extension (1221).

[0197] A plurality of first-side light sources (1110) may be arranged relative to each other along the first direction (Y direction). For example, a plurality of first-side light sources (1110) may be arranged such that their positions in the second direction (Z) correspond to each other.

[0198] For example, a plurality of first side light sources (1110) can be arranged at equal intervals along the first direction (Y direction).

[0199] The substrate bar (1220) may include a plurality of second protrusions (1223) that protrude from the other side (second side) of the central extension (1221). Each of the plurality of second protrusions (1223) may protrude from the other side of the central extension (1221) in the second direction (Z direction). The other side of the central extension (1221) as referred to herein means a side different from one side of the central extension (1221) from which the first protrusions (1222) protrude.

[0200] Each of the plurality of second protrusions (1223) may extend in a second direction (Z direction) from the central extension (1221). For example, each of the plurality of second protrusions (1223) may extend downward from the lower side of the central extension (1221).

[0201] For example, the second protrusion (1223) may be formed integrally with the central extension (1221).

[0202] A plurality of second protrusions (1223) may be arranged relative to each other along the first direction (Y direction). For example, a plurality of second protrusions (1223) may be arranged such that their positions in the second direction (Z) (e.g., the vertical height of the display device (1)) correspond to each other.

[0203] For example, a plurality of second protrusions (1223) may be arranged at equal intervals along the first direction (Y direction).

[0204] For example, the plurality of second protrusions (1223) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of second protrusions (1223) that protrude in the second direction (Z direction) from the central extension (1221) may correspond to each other.

[0205] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of second protrusions (1223). Hereinafter, the light source mounted on each of the plurality of second protrusions (1223) 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 (1223), but is not limited thereto. The second-side light source (1120) may be the second light source (1120).

[0206] A plurality of second side light sources (1120) may be arranged at positions spaced apart from the central extension (1221) in the second direction (Z direction). The plurality of second side light sources (1120) may be arranged to be deflected downward from the central extension (1221).

[0207] A plurality of second-side light sources (1120) may be arranged relative to each other along the first direction (Y direction). For example, the plurality of second-side light sources may be arranged so that their positions in the second direction (Z) correspond to each other.

[0208] For example, a plurality of second side light sources (1120) can be arranged at equal intervals along the first direction (Y direction).

[0209] For example, the first side light source (1110) and the second side light source (1120) may be provided in the same number.

[0210] Here, some areas of the central extension (1221) from which the plurality of first protrusions (1222) protrude and other areas of the central extension (1221) from which the plurality of second protrusions (1223) extend may be arranged to intersect along the first direction (Y direction). In other words, the first protrusions (1222) and the second protrusions (1223) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first protrusions (1222) and the plurality of second protrusions (1223) may be arranged so as not to be parallel to each other in the second direction (Z).

[0211] With this configuration, the first side light source (1110) and the second side light source (1120) can be arranged to intersect each other along the first 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 second direction (Z) and the second side light source (1120) is arranged on the other side so as to intersect each other along the first 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. For example, the first side light source (1110) and the second side light source (1120) can be arranged in a zigzag pattern.

[0212] 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.

[0213] The substrate bar (1220) may include a plurality of first recessed portions (1224). Each of the plurality of first recessed portions (1224) may be formed between a pair of adjacent first protrusions (1222) among the plurality of first protrusions (1222).

[0214] A plurality of first recessed portions (1224) may be provided on one side of the central extension portion (1221) in the second direction (Z). For example, a plurality of first recessed portions (1224) may be provided on the upper side of the central extension portion (1221).

[0215] The plurality of first recessed portions (1224) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relative to the plurality of first protrusions (1222).

[0216] A plurality of first recessed portions (1224) may be arranged relative to each other along the first direction (Y direction). For example, a plurality of first recessed portions (1224) may be arranged such that their positions in the second direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0217] For example, a plurality of first recessed portions (1224) may be arranged at equal intervals along the first direction (Y direction).

[0218] For example, a plurality of first recessed portions (1224) can be formed to have shapes that correspond to each other.

[0219] The substrate bar (1220) may include a plurality of second recessed portions (1225). Each of the plurality of second recessed portions (1225) may be formed between a pair of adjacent second protrusions (1223) among the plurality of second protrusions (1223).

[0220] A plurality of second recessed portions (1225) may be provided on the other side of the central extension portion (1221) in the second direction (Z). 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 (1224) is provided. For example, a plurality of second recessed portions (1225) may be provided on the lower side of the central extension portion (1221).

[0221] The plurality of second recessed portions (1225) 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 (1223).

[0222] A plurality of second recessed portions (1225) may be arranged along the first direction (Y direction). For example, a plurality of second recessed portions (1225) may be arranged so that their positions in the second direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0223] For example, a plurality of second recessed portions (1225) may be arranged at equal intervals along the first direction (Y direction).

[0224] For example, a plurality of second recessed portions (1225) can be formed to have shapes that correspond to each other.

[0225] Some areas of the central extension (1221) having a plurality of first recessed portions (1224) provided on one side and other areas of the central extension (1221) having a plurality of second recessed portions (1225) provided on the other side may be arranged to intersect along the first direction (Y direction). For example, the first recessed portions (1224) and the second recessed portions (1225) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first recessed portions (1224) and the plurality of second recessed portions (1225) may be arranged not to be parallel to each other in the second direction (Z).

[0226] For example, each of the plurality of first protrusions (1222) may be arranged parallel to one of the plurality of second recessed portions (1225) that is closest to the plurality of second recessed portions (1225) in the second direction (Z). For example, the plurality of first protrusions (1222) and the plurality of second recessed portions (1225) may be arranged parallel to each other in the second direction (Z).

[0227] Also, as an example, each of the plurality of second protrusions (1223) may be arranged parallel to one of the plurality of first recesses (1224) that is closest to the plurality of first recesses (1224) in the second direction (Z). For example, the plurality of second protrusions (1223) and the plurality of first recesses (1224) may be arranged parallel to each other in the second direction (Z).

[0228] Due to this, the substrate bar (1220) can have a shape that extends in a zigzag pattern overall.

[0229] The shape of each protrusion (1222a, 1222b) of the substrate bar (1220) and the shape of each recess (1223a, 1223b) may be different. Accordingly, the efficiency of the process for manufacturing the light source substrate (1200) may be improved. For example, when performing a process for manufacturing a plurality of light source substrates (1200A, 1200B) from one substrate material (1200M), when the shapes of each protrusion (1222a, 1222b) and each recess (1223a, 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 (see FIG. 17).

[0230] Some of the plurality of substrate bars (1220) may have different shapes from the plurality of light sources (1100) to the plurality of first protrusions (1222) and different shapes from the plurality of light sources (1100) to the plurality of second protrusions (1223).

[0231] For example, some of the plurality of substrate bars (1220) may have different shapes of edges of the plurality of first protrusions (1222) and shapes of the plurality of second protrusions (1223).

[0232] Some of the plurality of substrate bars (1220) may have different distances (d1) from the plurality of light sources (1100) to the edges (and / or borders, perimeters, outer surfaces) of the plurality of first protrusions (1222) and different distances (d2) from the plurality of light sources (1100) to the edges (and / or borders, perimeters, outer surfaces) of the plurality of second protrusions (1223).

[0233] The 'edge of the first protrusion (1222)' or 'outer surface of the first protrusion (1222)' mentioned here refers to a part of the outer edge of the substrate bar (1220), and means the outer edge of the portion of the substrate bar (1220) where the first protrusion (1222) is provided. The 'edge of the first protrusion (1222)' may be used in a corresponding meaning with terms such as 'outline of the first protrusion (1222)' or 'profile of the first protrusion (1222).

[0234] Likewise, the 'edge of the second protrusion (1223)' or 'outer surface of the second protrusion (1223)' mentioned here means a part of the outer edge portion of the substrate bar (1220), that is, the outer edge portion of the portion where the second protrusion (1223) is provided in the substrate bar (1220). The 'edge of the second protrusion (1223)' may be used in a corresponding meaning with terms such as 'outline of the second protrusion (1223)' or 'profile of the second protrusion (1223).

[0235] The distance from each of the plurality of light sources (1100) to the edge of each of the plurality of first protrusions (1222) and the distance from each of the plurality of light sources (1100) to the edge of each of the plurality of second protrusions (1223) may be different from each other in the second direction (Z).

[0236] The plurality of light sources (1100) may include a first light source (1110) arranged on a first protrusion (1222) of a plurality of substrate bars (1220), and a second light source (1120) arranged on a second protrusion (1223) of a plurality of substrate bars (1220). The shape from the first light source (1110) to the edge of the first protrusion (1222) and the shape from the second light source (1120) to the edge of the second protrusion (1223) may be different.

[0237] For example, the second direction (Z) distance from the first light source (1110) to the edge of the first protrusion (1222) and the second direction (Z) distance from the second light source (1120) to the edge of the second protrusion (1223) may be different. However, the present invention is not limited thereto, and the second direction (Z) shape and / or distance from the first light source (1110) to the edge of the first protrusion (1222) and the second direction (Z) shape and / or distance from the second light source (1120) to the edge of the second protrusion (1223) may be the same.

[0238] The plurality of substrate bars (1220) may include a first substrate bar (1220a, see FIGS. 8 and 9), a second substrate bar (1220b, see FIGS. 11 and 12), and a third substrate bar (1220c). The first substrate bar (1220a) may be arranged at a first stage along a second direction. For example, the first substrate bar (1220a) may be arranged at an upper end among the plurality of substrate bars (1220). The second substrate bar (1220b) may be arranged at a first stage along a third direction. For example, the first substrate bar (1220a) may be arranged at a lower end among the plurality of substrate bars (1220). The third substrate bar (1220c) may be positioned between the first substrate bar (1220a) and the second substrate bar (1220b) in the vertical direction (or left-right direction). For example, the third substrate bar (1220c) may include a plurality of third substrate bars (1220c). Accordingly, the plurality of substrate bars (1220c), excluding the upper substrate bar (1220a) and the lower substrate bar (1220b), may have the same distance from the first light source (1110c) to the first protrusion (1222c) and the same distance from the second light source (1120c) to the second protrusion (1223c).

[0239] The first substrate bar (1220a) may have a distance (d1) from the first light source (1110a) of the first substrate bar (1220a) to the edge of the first protrusion (1222a) greater than a distance (d2) from the second light source (1120a) of the first substrate bar (1220a) to the edge of the second protrusion (1223a). The second substrate bar (1220b) may have a distance (d2') from the second light source (1120b) of the second substrate bar (1220b) to the edge of the second protrusion (1223b) greater than a distance (d1') from the first light source (1110b) of the second substrate bar (1220b) to the edge of the first protrusion (1223b).

[0240] The distance (d1'') from the first light source (1110c) of the third substrate bar (1220c) to the edge of the first protrusion (1222c) and the distance (d2'') from the second light source (1120c) of the third substrate bar (1220c) to the edge of the second protrusion (1223c) may be the same.

[0241] For example, the distance (d1) from the first light source (1110a) of the first substrate bar (1220a) to the edge of the first protrusion (1222a) may be greater than the distance (d1'') from the first light source (1110c) of the third substrate bar (1220c) to the edge of the first protrusion (1222c). The distance (d2') from the second light source (1120b) of the second substrate bar (1220b) to the edge of the second protrusion (1223b) may be greater than the distance (d2'') from the second light source (1120c) of the third substrate bar (1220c) to the edge of the second protrusion (1223c).

[0242] Additionally, for example, a distance (d2) from the second light source (1120a) of the first substrate bar (1220a) to the edge of the second protrusion (1223a), a distance (d1') from the first light source (1110b) of the second substrate bar (1220b) to the edge of the first protrusion (1222b), a distance (d1'') from the first light source (1110c) of the third substrate bar (1220c) to the edge of the first protrusion (1222c), and / or a distance (d2'') from the second light source (1120c) of the third substrate bar (1220c) to the edge of the second protrusion (1223c) may be the same.

[0243] The distance (d1) from the first light source (1110a) of the first substrate bar (1220a) to the edge of the first protrusion (1222a) may be the first distance (d1). The distance (d2') from the second light source (1120b) of the second substrate bar (1220b) to the edge of the second protrusion (1223b) may be the second distance (d2').

[0244] The distance (d2) from the second light source (1120a) of the first substrate bar (1220a) to the edge of the second protrusion (1223a), the distance (d1') from the first light source (1110b) of the second substrate bar (1220b) to the edge of the first protrusion (1222b), the distance (d1'') from the first light source (1110c) of the third substrate bar (1220c) to the edge of the first protrusion (1222c), and / or the distance (d2'') from the second light source (1120c) of the third substrate bar (1220c) to the edge of the second protrusion (1223c) may be the third distance. However, the ordinal numbers and names of the first distance, the second distance, and the third distance are not limited to the above-described examples.

[0245] In other words, the first distance (d1) may be greater than the third distances (d2, d1', d1'', d2''), and the second distance (d2') may be greater than the third distances (d2, d1', d1'', d2''). The first protrusion (1222a) of the first substrate bar (1220a) on which the first light source (1110a) is disposed may be disposed between the middle mold (14) and the bottom chassis (15) (see FIG. 13). In addition, the second protrusion (1223b) of the second substrate bar (1220b) on which the second light source (1120b) is disposed may be disposed between the middle mold (14) and the bottom chassis (15).

[0246] Since the first distance (d1) and the second distance (d2') are greater than the third distance (d2, d1', d1'', d2''), the light source substrate (1200) and the backlight unit (100) including the same can be strong and durable against external impact.

[0247] The distance and / or thickness of each of the second and third directions of the plurality of substrate bars (1220) may be the same. However, due to the length relationship of the first distance, the second distance, and the third distance, the length / distance (L1) of the central extension (1221a) of the first substrate bar (1220a) and / or the length / distance (L2) of the central extension (1221b) of the second substrate bar (1220b) may be greater than the length / distance (L3) of the central extension (1221c) of the third substrate bar (1220c). Through this, since the central extension (1221c) of the third substrate bar (1220c) has a longer length and a wider area than the central extension (1221a) of the first substrate bar (1220a) and / or the central extension (1221b) of the second substrate bar (1220b), a supporter (150) for supporting the optical member (140) can be placed on the central extension (1221c) of the third substrate bar (1220c).

[0248] Accordingly, according to the disclosure, the display device (1) can not only stably fix the light source substrate (1200), but also place various components including a supporter (150) on the light source substrate (1200).

[0249] Fig. 13 is a cross-sectional view of a display device according to one embodiment of the present disclosure. Fig. 13 is a cross-sectional view taken along line EE' of the display device illustrated in Fig. 7. Fig. 13 illustrates a cross-section in which a first substrate bar is cut.

[0250] Referring to FIGS. 8, 11, and 13, at least a portion of the substrate bar (1220) may be positioned between the middle mold (14) and the bottom chassis (15) along the third direction (X). For example, the middle mold (14), the substrate bar (1220), and the bottom chassis (15) may be sequentially positioned along the front-back direction.

[0251] The bottom chassis (15) and the middle mold (14) can be combined. For example, an insertion protrusion (15b) protruding forward from the edge of the bottom chassis (15) can be inserted and / or accommodated within a receiving groove (14b) of the middle mold (14). In addition, a hook (14c) of the middle mold (14) can be inserted into a hole of the bottom chassis (15).

[0252] At least a portion of the substrate bar (1220) may be positioned between the middle mold (14) and the bottom chassis (15). For example, the first protrusion (1222a) of the first substrate bar (1220a) may be positioned between the middle mold (14) and the bottom chassis (15). Although FIG. 13 illustrates that the first protrusion (1222a) of the first substrate bar (1220a) is positioned between the middle mold (14) and the bottom chassis (15), the second protrusion (1223b) of the second substrate bar (1220b) may also be positioned between the middle mold (14) and the bottom chassis (15).

[0253] For example, the first surface (1228) of the first substrate bar (1220a) and the second substrate bar (1220b) may face one surface (e.g., the rear surface, 14a) of the middle mold (14), and the second surface (1229) of the first substrate bar (1220a) and the second substrate bar (1220b) may face one surface (e.g., the front surface, 15a) of the bottom chassis (15). For example, the first protrusion (1222a) of the first substrate bar (1220a) and the second protrusion (1223b) of the second substrate bar (1220b) may contact one surface (e.g., the rear surface, 14a) of the middle mold (14) and one surface (e.g., the front surface, 15a) of the bottom chassis (15), respectively.

[0254] The substrate body (1210) and the substrate bar (1220) are connected to form the light source substrate (1200), and since the first distance (d1) and / or the second distance (d2') are longer than the third distances (d2, d1', d1'', d2''), the first protrusion (1222a) of the first substrate bar (1220a) and the second protrusion (1223b) of the second substrate bar (1220b) can be arranged between the middle mold (14) and the bottom chassis (15). In addition, the first end (1226, e.g., the right end) and / or the second end (e.g., the left end) of the substrate bar (12220) extending to the middle mold (14) in the second direction can also be arranged between the middle mold (14) and the bottom chassis (15). Accordingly, the light source substrate (1220) can be fixed at the edge by the middle mold (14) and the bottom chassis (15).

[0255] FIG. 14 is an enlarged view of a portion of a substrate bar and a bottom chassis of a display device according to one embodiment of the present disclosure. FIG. 15 is an enlarged view of a substrate bar and a bar fixer coupled thereto of a display device according to one embodiment of the present disclosure. The middle mold is omitted in FIGS. 14 and 15.

[0256] Referring to FIGS. 14 and 15, in a display device (1) according to one embodiment of the present disclosure, a light source substrate (1200) may be mounted on a bottom chassis (15). For example, the display device (1) may include a board fixer (200), and the board fixer (200) may be provided to fix the light source substrate (1200) to the bottom chassis (15). For example, the light source substrate (1200) may be mounted on the bottom chassis (15) via the board fixer (200).

[0257] The display device (1) may include a bar fixer (201). The bar fixer (201) may be configured to fix a substrate bar (1220) to a bottom chassis (15). A plurality of bar fixers (201) may be provided, and the plurality of bar fixers (201) may be provided to fix a plurality of substrate bars (1220) to the bottom chassis (15). The bar fixer (201) may be a type of the substrate fixer (200) described above. For example, the plurality of substrate fixers (200) may include the bar fixer (201). At least a portion of the plurality of substrate fixers (200) (e.g., the bar fixer (201)) may be provided to fix the substrate bar (1220) to the bottom chassis (15).

[0258] The bar fixer (201) can be mounted on the bottom chassis (15). The bottom chassis (15) can include a mounting portion (15a) provided to mount the bar fixer (201). The bar fixer (201) can be fixed to the bottom chassis (15) by being mounted on the mounting portion (15a). As the bar fixer (201) is mounted on the bottom chassis (15), the substrate bar (1220) can be fixed to the bottom chassis (15). The bottom chassis (15) can include a plurality of mounting portions (15a) corresponding to the number of bar fixers (201).

[0259] Each of the plurality of substrate bars (1220) may include a coupling portion (1227). Each of the plurality of substrate bars (1220) may be coupled to the bottom chassis (15) via the coupling portion (1227). The coupling portion (1225) may include a substrate hole (1225h). A bar fixer (201) may be arranged at the coupling portion (1227) of each of the plurality of substrate bars (1220). For example, a bar fixer (201) may be coupled to the coupling portion (1227) of each of the plurality of substrate bars (1220). For example, the number of coupling portions (1227) may correspond to the number of bar fixers (201). The coupling portion (1227) of the substrate bar (1220) may also be referred to as a bar coupling portion (1227).

[0260] The bar fixer (201) is placed on the joint portion (1227) of the substrate bar (1220), so that the joint portion (1227) can be joined to the bottom chassis (15). As the bar fixer (201) is mounted on the mounting portion (15a) of the bottom chassis (15), the substrate bar (1220) can be fixed to the bottom chassis (15).

[0261] For example, each of the plurality of bar fixers (201) can be detachably mounted to the bottom chassis (15). As a result, each of the plurality of substrate bars (1220) can be detachably mounted to the bottom chassis (15).

[0262] Accordingly, the light source substrate (1200) can be fixed between the middle mold (14) and the bottom chassis (15) by the first protrusion (1222) of the first substrate bar (1220a) and the second protrusion (1223) of the second substrate bar (1220b) at the edge, and the end (1226) along the second direction of the substrate bar (12220), and can be fixed between the middle mold (14) and the bottom chassis (15) in an area excluding the edge of the light source substrate (1200) by the bar fixer (210).

[0263] FIG. 16 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0264] Referring to FIG. 16, some of the light sources (1130) among the plurality of light sources (1100) may be mounted on the substrate body (1210). Hereinafter, for convenience, the light sources (1130) mounted on the substrate body (1210) are referred to as body light sources (1130).

[0265] 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.

[0266] Some of the plurality of body light sources (1130) may be arranged in parallel with the plurality of light sources (i.e., the first side light sources (1110)) mounted on the plurality of first protrusions (1222) provided on one of the plurality of substrate bars (1220) along the second direction (Z). 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 (Z).

[0267] Some of the other body light sources (1130) may be arranged in parallel with the plurality of light sources (i.e., the second side light sources (1120)) mounted on the plurality of second protrusions (1223) provided on one of the plurality of substrate bars (1220) along the second direction (Z). 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 (Z).

[0268] 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).

[0269] 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).

[0270] 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 are not limited thereto.

[0271] At this time, the long side (1301) of the connector (1300) may be parallel to the second direction (Z). That is, the connector (1300) may be arranged so that its long side (1301) is parallel to the second direction (Z). In other words, the connector (1300) may be arranged so that its length in the second direction (Z) is longer than its length in the first direction (Y), and may be extended in the second direction (Z).

[0272] Since the long side (1301) of the connector (1300) is parallel to the second direction (Z), the amount of material required to manufacture the substrate body (1210) can be reduced, and the manufacturing cost of the product can be reduced.

[0273] 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 (not shown) provided on a 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 (not shown) provided on a long side (1301) of the connector (1300).

[0274] 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).

[0275] 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).

[0276] 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.

[0277] 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).

[0278] A plurality of driving elements (1400) can 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).

[0279] At this time, a reflective sheet (120) may be attached to the front surface of the substrate body (1210). As a result, a driving element penetration portion may be formed in the reflective sheet (120) in an area corresponding to the positions of the 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.

[0280] 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 second direction (Z) are different from each other, and some of the driving elements (1400) among the plurality of driving elements (1400) may be arranged so that their positions in the first direction (Y) are different from those of other driving elements (1400).

[0281] The plurality of driving elements (1400) may include driving elements (1400A) of a first row and driving elements (1400B) of a second row.

[0282] The driving elements (1400A) of the first row can be arranged along the second direction (Z). 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 second direction (Z).

[0283] Additionally, the driving elements (1400B) of the second row may be arranged along the second direction (Z). 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 second direction (Z).

[0284] 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. For example, each driving element (1400A) included in the driving element (1400A) of the first row and each driving element (1400B) included in the driving element (1400B) of the second row may be arranged to be spaced apart from each other in the first direction (Y). For example, a plurality of driving elements (1400A) may be arranged in a zigzag pattern on the front surface (1210F) of the substrate body (1210).

[0285] By this structure, the reflectivity of the reflective sheet (120) and the decrease in brightness at the location of the penetration portion 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.

[0286] FIG. 17 is a schematic diagram of a light source substrate of a display device according to one embodiment of the present disclosure.

[0287] Referring to FIG. 17, a light source substrate (1200) 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).

[0288] A single substrate material (1200M) having multiple 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.

[0289] A plurality of components of a display device, such as a plurality of light sources (1100), connectors (1300), and / or driving elements (1400), can be mounted on a single substrate material (1200M). A mounting device for mounting the components can have coordinates regarding the desired mounting position information of each of the components, such as a plurality of light sources (1100), connectors (1300), and / or driving elements (1400), mounted on the substrate material (1200M).

[0290] While the components of the display device are mounted on the substrate material (1200M), the substrate material (1200M) may thermally expand or contract. Accordingly, components such as a plurality of light sources (1100), connectors (1300), and / or driving elements (1400) may be mounted in locations other than the desired mounting locations.

[0291] A substrate material (1200M) used in a display device according to one embodiment of the disclosure may be provided with a reference mark (1250). The reference mark (1250) may be provided on a flat portion (1260). The flat portion (1260) may be provided between a plurality of protrusions (1222).

[0292] The reference mark (1250) can prevent components from being mounted in locations other than the desired mounting locations due to thermal expansion or contraction, as described above. For example, the mounting device can use the reference mark (1250) as a reference point. Even if the substrate material (1200M) expands or contracts thermally, the mounting device can re-establish the zero point based on the reference mark (1250) and place components such as a plurality of light sources (1100), connectors (1300), and / or driving elements (1400) in the desired mounting locations. Accordingly, components can be prevented from being mounted in incorrect locations.

[0293] A pair of light source substrates (1200A, 1200B) may be illustrated as being flipped 180 degrees on one substrate material (1200M). The substrate bars (1220) provided on one of the pair of light source substrates (1200A, 1200B) and the substrate bars (1220) provided on the other may be arranged to cross each other. For example, one of the substrate bars (1220) provided on one of the light source substrates (1200A, 1200B) may be illustrated as being positioned between adjacent pairs of substrate bars (1220) provided on one of the light source substrates (e.g., 1200A). Additionally, a pair of light source substrates (1200A, 1200B) may be illustrated such that their respective substrate bodies (1210) are positioned on opposite sides of each other.

[0294] Thereafter, a step of separating a pair of light source substrates (1200A, 1200B) from each other may be performed by cutting along the edges of the pair of light source substrates (1200A, 1200B) illustrated on a single substrate material (1200M) using a tool. For example, the tool (T) may include various processing devices such as a router.

[0295] By the above method, substrate bars included in a pair of light source substrates (1200A, 1200B) can be formed from a single substrate material (1200M) and then separated using a tool. In addition, since the edges of the pair of light source substrates (1200A, 1200B) are cut along, the portions unnecessarily removed in 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 reducing the cost. In other words, since a plurality of light source substrates (1200A, 1200B) can be manufactured from a single substrate material (1200M), waste of materials can be prevented, manufacturing procedures can be reduced, and manufacturing costs can be reduced.

[0296] According to one aspect of the present disclosure, a display device can be provided in which a light source substrate can be stably fixed within a main body by increasing the length of a protrusion of a substrate bar disposed at the outermost side among a plurality of substrate bars.

[0297] The effects according to one aspect of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the description below.

[0298] A display device according to one embodiment includes a display panel (20), a plurality of light sources (1100) configured to irradiate light toward the display panel and including first light sources (1110) and second light sources (1120), and a plurality of substrate bars (1220) on which the plurality of light sources are mounted, wherein each of the plurality of substrate bars may include a central extension portion (1221) extending in a first direction (Y), a first protrusion portion (1222) protruding from the central extension portion in a second direction (Z) different from the first direction so that the first light source (1110) is mounted, and a second protrusion portion (1223) protruding from the central extension portion in a third direction (-Z) opposite to the second direction so that the second light source (1120) is mounted.

[0299] Some of the plurality of substrate bars may have different distances (d1) from the first light source to the edge of the first protrusion (1222) and different distances (d2) from the second light source to the edge of the second protrusion (1223).

[0300] The plurality of substrate bars (1220) include a first substrate bar (1220a) provided at a first stage along the second direction among the plurality of substrate bars and a second substrate bar (1220b) provided at a first stage along the third direction among the plurality of substrate bars, and a distance (d1) from a first light source (1110a) mounted on the first substrate bar to an edge of the first protrusion (1222a) of the first substrate bar is greater than a distance (d2) from a second light source (1120a) mounted on the first substrate bar to an edge of the second protrusion (1223a) of the first substrate bar, and a distance (d2') from a second light source (1120b) mounted on the second substrate bar to an edge of the second protrusion (1223b) of the second substrate bar is greater than a distance (d1) from a second light source (1120a) mounted on the second substrate bar to an edge of the second protrusion (1223b) of the second substrate bar. It may be greater than the distance (d1') from the first light source (1110b) to the edge of the first protrusion (1222b) of the second substrate bar.

[0301] The above plurality of substrate bars (1220) further include a third substrate bar (1220c) provided between the first substrate bar and the second substrate bar, and a distance (d1) from a first light source mounted on the first substrate bar to an edge of the first protrusion (1222) of the first substrate bar may be greater than a distance (d1'') from a first light source mounted on the third substrate bar to an edge of the first protrusion (1222c) of the third substrate bar, and a distance (d2') from a second light source mounted on the second substrate bar to an edge of the second protrusion (1223b) of the second substrate bar may be greater than a distance (d2'') from a second light source mounted on the third substrate bar to an edge of the second protrusion (1223c) of the third substrate bar.

[0302] It may further include a bottom chassis (15) on which the plurality of substrate bars are arranged, and a middle mold (14) coupled to the bottom chassis and configured to fix the first protrusion of the first substrate bar and the second protrusion of the second substrate bar.

[0303] The first protrusion of the first substrate bar and the second protrusion of the second substrate bar can be positioned between the middle mold and the bottom chassis.

[0304] The second direction and the third direction may each be perpendicular to the first direction.

[0305] The central extension may further include a plurality of bar fixers (201) arranged to fix the plurality of substrate bars to the bottom chassis.

[0306] It may further include an optical member (130, 140) disposed between the display panel and the plurality of light sources, and a supporter (150) disposed in the central extension of the third substrate bar to support the optical member.

[0307] The first protrusion includes a plurality of first protrusions, the second protrusion includes a plurality of second protrusions, and each of the plurality of substrate bars may further include a plurality of first recessed portions (1224) each formed between a pair of adjacent first protrusions among the plurality of first protrusions, and a plurality of second recessed portions (1225) each formed between a pair of adjacent second protrusions among the plurality of second protrusions.

[0308] The device further includes a reference mark (1250) having a step in the first direction with the plurality of first recessed portions, and the distance between the plurality of first protrusions and the reference mark may be smaller than the distance between the plurality of first recessed portions and the plurality of first protrusions.

[0309] The device further includes a substrate body (1210) extending in the first direction so that some of the plurality of light sources (1130) are mounted and the plurality of substrate bars are connected, and each of the plurality of substrate bars can extend from the substrate body.

[0310] Some of the light sources mounted on the substrate body may be arranged parallel to the plurality of light sources mounted on the first protrusion along the first direction (Y), and other some of the light sources mounted on the substrate body may be arranged parallel to the plurality of light sources mounted on the second protrusion along the first direction (Y).

[0311] The substrate body further includes a plurality of driving elements (1400) mounted on one surface (1210F) facing the display panel and configured to control at least some of the light sources, wherein the plurality of driving elements are arranged to have different positions in the second direction, and some of the driving elements may be arranged to have different positions in the first direction from other driving elements of the plurality of driving elements.

[0312] The plurality of driving elements include driving elements of a first row arranged along the second direction, and driving elements of a second row arranged along the second direction and spaced apart from the driving elements of the first row, and each driving element included in the driving elements of the first row and each driving element included in the driving elements of the second row can be arranged such that their positions in the second direction are spaced apart from each other.

[0313] A display device according to one embodiment includes a display panel (20), a plurality of light sources (1100) including a first light source (1110) and a second light source (1120) for irradiating light toward the display panel, and a substrate bar (1220) on which the plurality of light sources are mounted, wherein the substrate bar may include a central extension portion (1221) extending in a first direction (Y), a first protrusion portion (1222) protruding from the central extension portion in a second direction (Z) and on which the first light source is mounted, and a second protrusion portion (1223) protruding from the central extension portion in a third direction (-Z) different from the second direction and on which the second light source is mounted.

[0314] The distance from the first light source (1110) to the edge of the first protrusion (1222) and the distance from the second light source (1120) to the edge of the second protrusion (1223) may be different.

[0315] The plurality of substrate bars may include a first substrate bar (1220a) provided at a first stage along the second direction among the plurality of substrate bars and a second substrate bar (1220b) provided at a first stage along the third direction among the plurality of substrate bars, and a distance from a first light source of the first substrate bar to the plurality of first protrusions of the first substrate bar may be greater than a distance from a second light source of the first substrate bar to the plurality of second protrusions of the first substrate bar, and a distance from a second light source of the second substrate bar to the plurality of second protrusions of the second substrate bar may be greater than a distance from the first light source of the second substrate bar to the plurality of first protrusions of the second substrate bar.

[0316] The plurality of substrate bars further include a third substrate bar (1220c) provided between the first substrate bar and the second substrate bar, and a distance from a first light source of the first substrate bar to the plurality of first protrusions of the first substrate bar may be greater than a distance from a first light source of the third substrate bar to the plurality of first protrusions of the third substrate bar, and a distance from a second light source of the second substrate bar to the plurality of second protrusions of the second substrate bar may be greater than a distance from a second light source of the third substrate bar to the plurality of second protrusions of the third substrate bar.

[0317] The display panel may further include an optical member (130, 140) disposed between the first light source and the second light source, and a supporter (150) disposed in the central extension of the third substrate bar to support the optical member.

[0318] A display device according to one embodiment includes a display panel (20), a bottom chassis (15) configured to support the display panel, a middle mold (14) coupled to the bottom chassis at an edge of the bottom chassis, a light source substrate (1200) disposed on the bottom chassis and having a light source mounted thereon, and a plurality of bar fixers (201) configured to fix the light source substrate to the bottom chassis, wherein the light source substrate (1200) includes a substrate body (1210) extending along a first direction (Z), a plurality of central extension portions (1221) spaced apart from each other in the first direction (Z) and extending in a second direction (Y) from the substrate body so that the plurality of bar fixers (201) are disposed, a first protrusion (1222) protruding from a first side of each of the plurality of central extension portions, and a plurality of second protrusions protruding from a second side of each of the plurality of central extension portions. The plurality of first protrusions and the plurality of second protrusions may be arranged between the middle mold and the bottom chassis, so as to include a protrusion (1223) and to fix the light source substrate.

[0319] The above has illustrated and described specific embodiments. However, the present invention 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 technical ideas of the present 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, the plurality of light sources including first light sources and second light sources; and A plurality of substrate bars on which the plurality of light sources are mounted; Each of the above plurality of substrate bars, A central extension extending in the first direction; A first protrusion protruding in a second direction different from the first direction from the central extension so that the first light source is mounted; and Including a second protrusion that protrudes in a third direction opposite to the second direction from the central extension so that the second light source is mounted; A display device wherein some of the plurality of substrate bars have different shapes from the first light source to the first protrusion and different shapes from the second light source to the second protrusion.

2. In paragraph 1, A display device wherein some of the plurality of substrate bars have different distances from the first light source to the edge of the first protrusion and different distances from the second light source to the edge of the second protrusion.

3. In paragraph 2, The above multiple substrate bars are, A first substrate bar provided in the first stage according to the second direction among the plurality of substrate bars; and Including a second substrate bar provided in the first stage according to the third direction among the plurality of substrate bars; The distance from the first light source mounted on the first substrate bar to the edge of the first protrusion of the first substrate bar is greater than the distance from the second light source mounted on the first substrate bar to the edge of the second protrusion of the first substrate bar. A display device wherein a distance from a second light source mounted on the second substrate bar to an edge of the second protrusion of the second substrate bar is greater than a distance from a first light source mounted on the second substrate bar to an edge of the first protrusion of the second substrate bar.

4. In paragraph 3, The above multiple substrate bars are, Further comprising a third substrate bar provided between the first substrate bar and the second substrate bar; The distance from the first light source mounted on the first substrate bar to the edge of the first protrusion of the first substrate bar is greater than the distance from the first light source mounted on the third substrate bar to the edge of the first protrusion of the third substrate bar. A display device wherein a distance from a second light source mounted on the second substrate bar to an edge of the second protrusion of the second substrate bar is greater than a distance from a second light source mounted on the third substrate bar to an edge of the second protrusion of the third substrate bar.

5. In paragraph 4, A bottom chassis on which the plurality of substrate bars are arranged; and A display device further comprising a middle mold coupled to the bottom chassis and configured to fix the first protrusion of the first substrate bar and the second protrusion of the second substrate bar.

6. In paragraph 5, A display device in which the first protrusion of the first substrate bar and the second protrusion of the second substrate bar are positioned between the middle mold and the bottom chassis.

7. In paragraph 6, A display device wherein the second direction and the third direction are each perpendicular to the first direction.

8. In paragraph 7, A display device further comprising a plurality of bar fixers arranged on the central extension to secure the plurality of substrate bars to the bottom chassis.

9. In paragraph 4, An optical member disposed between the display panel and the plurality of light sources; and A display device further comprising a supporter disposed on a central extension portion of the third substrate bar to support the optical member.

10. In paragraph 4, The above first protrusion includes a plurality of first protrusions, The second protrusion includes a plurality of second protrusions, Each of the above plurality of substrate bars, A plurality of first recessed portions, each of which is formed between a pair of adjacent first protrusions among the plurality of first protrusions; and A display device further comprising a plurality of second recessed portions, each of which is formed between a pair of adjacent second protrusions among the plurality of second protrusions.

11. In paragraph 10, Further comprising a reference mark having a step in the second direction and the plurality of first recessed portions; A display device in which the distance between the plurality of first protrusions and the plurality of first recessed portions is smaller than the distance between the plurality of first protrusions and the plurality of first recessed portions.

12. In paragraph 1, It further includes a substrate body extending in the second direction so that some of the plurality of light sources are mounted and the plurality of substrate bars are connected; Each of the plurality of substrate bars is a display device extending from the substrate body.

13. In paragraph 12, Some of the light sources mounted on the above substrate body are arranged in parallel with a plurality of light sources mounted on the first protrusion along the first direction, A display device in which some of the light sources mounted on the above substrate body are arranged in parallel along the first direction with a plurality of light sources mounted on the second protrusion.

14. In paragraph 12, Further comprising: a plurality of driving elements mounted on one surface 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 above plurality of driving elements are arranged so that their positions in the second direction are different from each other, A display device in which some of the driving elements among the plurality of driving elements are arranged so that their positions in the first direction are different from those of other driving elements among the plurality of driving elements.

15. In paragraph 14, The above plurality of driving elements are, A first row of driving elements arranged along the second direction, Including a second row of driving elements spaced apart from the driving elements of the first row and arranged along the second direction, A display device in which each driving element included in the driving elements of the first column and each driving element included in the driving elements of the second column are arranged so that their positions in the second direction are spaced apart from each other.

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