Display apparatus and light source apparatus thereof

Abstract

This display apparatus comprises an image display unit and a light source apparatus, wherein the light source apparatus includes: a substrate including a substrate body that extends in a first direction, and a plurality of substrate bars that extend in a second direction from the substrate body and are spaced apart from each other in the first direction; a plurality of light sources which include a plurality of first light sources provided on the substrate body and a plurality of second light sources provided on the plurality of substrate bars, and which emit light toward the image display unit; at least one dimming block including at least one of the plurality of light sources; and a driving element which is provided only on the substrate body from among the substrate body and the plurality of substrate bars, and which drives the at least one dimming block, the at least one dimming block including at least one from among a first dimming block that includes only a first light source, a second dimming block that includes only a second light source, and a third dimming block that includes the first light source and the second light source.

Description

Display device and light source device thereof

[0001] The disclosed invention relates to a display device and a light source device thereof.

[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] A display device includes a light source device to convert electrical information into visual information. The light source device includes a plurality of light sources that independently emit light.

[0005] Each of the plurality of light sources includes, for example, a light emitting diode (LED) or an organic light emitting diode (OLED).

[0006] The display's light source device utilizes local dimming technology to enhance image contrast. Multiple light sources are divided into multiple dimming blocks, and a driving element can control the driving current supplied to the light sources contained in one or more dimming blocks.

[0007] The driving elements and light sources (e.g., light emitting diodes) can be mounted on the substrate using surface mount technology (SMT).

[0008] Recently, a large number of driving elements and light sources are being used to achieve a high contrast ratio, which requires a large number of wires on the substrate.

[0009] According to one aspect of the disclosed invention, a display device and a light source device thereof can be provided that can implement local dimming in various ways in a light source device having an improved substrate structure that can reduce the cost of the product and manufacturing cost.

[0010] According to another aspect of the disclosed invention, a display device and a light source device thereof can be provided that can reduce noise of a plurality of dimming blocks in a light source device having an improved substrate structure that can reduce the cost of the product and manufacturing cost.

[0011] According to another aspect of the disclosed invention, a display device and a light source device thereof can be provided that can implement the same brightness of a plurality of dimming blocks in a light source device having an improved substrate structure that can reduce the cost of the product and manufacturing cost.

[0012] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0013] A display device according to one embodiment of the present disclosure includes: an image display unit; and a light source device; wherein the light source device includes: a substrate including a substrate body extending along a first direction, and a plurality of substrate bars extending from the substrate body in a second direction and arranged to be spaced apart from each other along the first direction; a plurality of light sources including a plurality of first light sources provided on the substrate body and a plurality of second light sources provided on the plurality of substrate bars, the plurality of light sources being arranged to irradiate light toward the image display unit; at least one dimming block including at least one light source among the plurality of light sources; and a driving element provided only on the substrate body among the substrate body and the plurality of substrate bars, the driving element driving the at least one dimming block; wherein the at least one dimming block may include at least one of a first dimming block including only the first light source, a second dimming block including only the second light source, and a third dimming block including the first light source and the second light source.

[0014] A light source device according to one embodiment of the present disclosure comprises: a substrate including a substrate body extending in a first direction, and a plurality of substrate bars extending in a second direction from the substrate body and arranged to be spaced apart from each other along the first direction; a plurality of light sources including a plurality of first light sources provided on the substrate body and a plurality of second light sources provided on the plurality of substrate bars, the light sources being arranged to irradiate light toward an image display unit; at least one dimming block including at least one light source among the plurality of light sources; and a driving element provided only on the substrate body among the substrate body and the plurality of substrate bars, the driving element driving the at least one dimming block; wherein the at least one dimming block may include at least one of a first dimming block including only the first light source, a second dimming block including only the second light source, and a third dimming block including the first light source and the second light source.

[0015] FIG. 1 is a drawing illustrating 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 illustrating a display panel of a display device according to one embodiment of the present disclosure.

[0018] FIG. 4 is a drawing illustrating a substrate and bottom chassis of a display device according to one embodiment of the present disclosure.

[0019] FIG. 5 is an enlarged view of a portion of a substrate and bottom chassis of a display device according to one embodiment of the present disclosure.

[0020] FIG. 6 is an enlarged view of a portion of a substrate of a display device according to one embodiment of the present disclosure.

[0021] FIG. 7 is an enlarged view of a portion of an example of a light source device of a display device according to one embodiment of the present disclosure.

[0022] FIG. 8 is a diagram illustrating an example of a dimming block of a light source device of a display device according to one embodiment of the present disclosure.

[0023] FIG. 9 is a control block diagram of a display device according to one embodiment of the present disclosure.

[0024] FIG. 10 is a diagram illustrating an example of a connection structure of a dimming driver, a driving element, and a dimming block of a display device according to one embodiment of the present disclosure.

[0025] FIG. 11 is a drawing illustrating an example of a connection structure of a driving element and a dimming block of a light source device of a display device according to one embodiment of the present disclosure.

[0026] FIG. 12 is a drawing illustrating an example of a substrate wiring of a light source device of a display device according to one embodiment of the present disclosure.

[0027] FIG. 13 is a diagram illustrating an example of controlling current of a plurality of dimming blocks based on a distance between a driving element of a light source device of a display device and a plurality of dimming blocks according to one embodiment of the present disclosure.

[0028] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0029] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0030] Additionally, the singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0031] Additionally, in this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0032] Additionally, the terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," and "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0033] In addition, the terminology used in this specification is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprise" or "have" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0034] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0035] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0036] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0037] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0038] Meanwhile, the terms "up-down direction", "front-back direction", etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the terms "front" and "rear" below may be defined based on the X direction shown in the drawings, respectively. The terms "upper" and "lower" below may be defined based on the Z direction shown in the drawings, respectively. The terms "left direction" and "right direction" below may be defined based on the Y direction shown in the drawings, respectively. The term "vertical direction" below may mean the Z direction shown in the drawings, respectively, and the term "horizontal direction" below may mean the Y direction shown in the drawings, respectively.

[0039] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0040] FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.

[0041] 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. In FIG. 1, the display device (1) is exemplified as a television (TV), but is not limited thereto. For example, the display device (1) can be implemented in various forms such as a monitor, which is a type of computer output device, a portable multimedia device, a portable communication device, etc., and the form of the display device (1) is not limited as long as it is a device that visually displays an image.

[0042] 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.

[0043] 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 concept of the present disclosure can also be applied to a curved display device or a bendable or flexible display device in which the flat state and the curved state can be changed. In addition, the configuration of the present disclosure can be applied to display devices of various shapes regardless of the screen size or ratio of the display device.

[0044] 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.

[0045] 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.

[0046] As illustrated in FIG. 1, the display device (1) may include a main body (11) and a screen (12) that displays an image (I).

[0047] 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.

[0048] 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).

[0049] 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.

[0050] 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.

[0051] Each of the plurality of pixels (P) can emit light of different brightness and different colors. Specifically, each of the plurality of pixels (P) is divided into sub-pixels (P R , P G , P B ) may include sub-pixels (P R , P G , P B ) is a red sub-pixel (P) that can emit red light. R ), a green sub-pixel (P) capable of emitting green light G ) and blue sub-pixels (P) capable of emitting blue light. B ) can include. 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.

[0052] 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.

[0053] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0054] 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.

[0055] For example, the display device (1) may include a display panel (20). The display panel (20) may be provided on the main body (11). The display panel (20) may include an image display unit that displays an image (I). The screen (12) described in FIG. 1 may be formed on the front surface of the display panel (20).

[0056] For example, the display panel (20) may have a roughly rectangular shape. Specifically, the display panel (20) may have a shape in which the lengths of the horizontal and vertical sides are different from each other. That is, the display panel (20) may be provided to have a long side and a short side. The display panel (20) may be provided in a rectangular plate shape. However, the 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.

[0057] 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.

[0058] In a display device (1) according to one embodiment of the present disclosure, the display panel (20) may be configured as a panel of a light-emitting display type such as a liquid crystal display (LCD).

[0059] On one side of the display panel (20), a cable (20a) for transmitting image data to the display panel (20) and a display driver integrated circuit (DDI) (30) (hereinafter referred to as a 'panel driver') for processing digital image data and outputting an analog image signal may be provided.

[0060] The cable (20a) can electrically connect between the control assembly (50) / power assembly (60) and the panel driver (30), and can also electrically connect between the panel driver (30) and the display panel (20). The cable (20a) can include a flexible flat cable or a film cable that can be bent.

[0061] The panel driver (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).

[0062] In addition, the cable (20a) and the panel driver (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 panel driver (30) may be placed on the cable (20a). However, this is not limited thereto, and the panel driver (30) may be placed on the display panel (20).

[0063] A detailed description of the structure of the display panel (20) will be described later.

[0064] The display device (1) may include a backlight unit (100) configured to irradiate light toward the display panel (20). The backlight unit (100) may be provided in the main body (11). The backlight unit (100) may be arranged at the rear of the display panel (20) and configured to irradiate light toward the front where the display panel (20) is located. Specifically, the backlight unit (100) may be configured as a surface light source. The display panel (20) may block or allow light emitted from the backlight unit (100) to pass through.

[0065] 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.

[0066] As illustrated in FIG. 2, the backlight unit (100) may include a light source device (1000). The light source device (1000) may generate and emit light. Specifically, the light source device (1000) may be configured to emit monochromatic light or white light.

[0067] A detailed description of the light source device (1000) will be described later.

[0068] As illustrated in FIG. 2, the backlight unit (100) may include a reflective sheet (120) configured to reflect light. The reflective sheet (120) may reflect light forward or in a direction close to the forward direction.

[0069] For example, the reflective sheet (120) may be attached to the front surface of the light source device (1000). Specifically, the reflective sheet (120) may be attached to the front surface of the substrate (1200).

[0070] For example, the light source device (1000) can emit light in various directions in front of the reflective sheet (120). The light emitted from the light source device (1000) can be emitted not only toward the diffusion plate (130) described later, but also toward the reflective sheet (120) from the light source device (1000), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffusion plate (130).

[0071] Alternatively, when light emitted from a light source device (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.

[0072] As illustrated in FIG. 2, the backlight unit (100) may include a diffuser plate (130) configured to uniformly diffuse light. The diffuser plate (130) may be provided in front of the light source device (1000) and the reflective sheet (120). The diffuser plate (130) may evenly disperse light emitted from the light source device (1000) and then emit the light forward.

[0073] As illustrated in FIG. 2, the backlight unit (100) may include an optical sheet (140) that is provided to further improve the luminance and uniformity of the emitted light. The optical sheet (140) may be provided to refract and scatter light emitted from the front surface of the diffusion plate (130). For example, the optical sheet (140) may include various types of sheets, such as a diffusion sheet, a prism sheet, a reflective polarizing sheet, and a quantum dot sheet.

[0074] The display device (1) may include a control assembly (50) that controls the operation of the backlight unit (100) and the display panel (20), and a power assembly (60) that supplies power to the backlight unit (100) and the display panel (20). The control assembly (50) and the power assembly (60) may be provided in the main body (11).

[0075] For example, the control assembly (50) may include a control circuit that controls the operation of the display panel (20) and the backlight unit (100). The control circuit may process image data received from an external content source. The control circuit may transmit image data to the display panel (20) and dimming data to the backlight unit (100).

[0076] For example, the power assembly (60) may include a power circuit that supplies power to the display panel (20) and the backlight unit (100). The power circuit may supply power to the control assembly (50), the backlight unit (100), and the display panel (20).

[0077] 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.

[0078] The display device (1) may include a display case that is provided to support various components of the main body (11) of the display device (1). In other words, various components of the main body (11) may be accommodated inside the display case. The display case may form the outer shape of the display device (1).

[0079] 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).

[0080] For example, the display device (1) may include a top chassis (13). The top chassis (13) may include a top chassis (13) that supports the front or side of the display panel (20). For example, the top chassis (13) may be provided in a shape of an approximately square frame.

[0081] The top chassis (13) may form a bezel that is positioned to face the front of the display device (1) and support the front of the display panel (20). However, if the display device (1) is a bezel-less type display device with a very narrow or no bezel, the top chassis (13) may be provided to support only the side of the display panel (20). Alternatively, if the bottom chassis (15) supports the side of the display panel (20), the display device (1) may not include the top chassis (13).

[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 coupled to the rear of the top chassis (13). The bottom chassis (15) may support various components of the display device (1), such as a backlight unit (100), a control assembly (50), and a power assembly (60).

[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 by including a material with high thermal conductivity to dissipate heat generated from the light source (31) to the outside. For example, the bottom chassis (15) may be formed by including a metal material such as aluminum or SUS, or a plastic material such as ABS.

[0084] For example, the display device (1) may include a middle mold (14). The middle mold (14) may be positioned between the top chassis (13) and the bottom chassis (15). For example, the middle mold (14) may support at least some components of the backlight unit (100).

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

[0087] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example for explaining a display device according to the concept of the present disclosure, and the concept of the present disclosure is not limited thereto. A display device according to the concept of the present disclosure may be provided to include various configurations for performing the function of providing images through a screen.

[0088] FIG. 3 is a cross-sectional view illustrating a display panel of a display device according to one embodiment of the present disclosure.

[0089] 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).

[0090] 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).

[0091] 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).

[0092] 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.

[0093] 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).

[0094] 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).

[0095] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0096] The color filter (27) may include, for example, a red filter (27R) that passes red light, a green filter (27G) that passes green light, and a blue filter (27G) that passes blue light, and the red filter (27R), the green filter (27G), and the blue filter (27B) may be arranged parallel to each other. The area where the color filter (27) is formed may correspond to the pixel (P) described above. The area where the red filter (27R) is formed may correspond to the red sub-pixel (P). R ) corresponds to the green sub-pixel (P), and the area where the green filter (27G) is formed is the green sub-pixel (P G ) corresponds to the blue sub-pixel (P), and the area where the blue filter (27B) is formed is a blue sub-pixel (P B ) can be corresponded to.

[0097] 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).

[0098] 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.

[0099] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can transmit light incident from the outside. For example, the pixel electrode (23) and the common electrode (26) may be made of indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowire, carbon nanotube (CNT), graphene, or PEDOT (3,4-ethylenedioxythiophene). A thin film transistor (TFT) (24) may be provided on the inside of the second transparent substrate (22).

[0100] 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).

[0101] 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.

[0102] 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).

[0103] 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).

[0104] 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).

[0105] The structure of the display panel (20) described above with reference to FIG. 3 is only an example of the structure that the display panel 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.

[0106] FIG. 4 is a drawing illustrating a substrate and bottom chassis of a display device according to one embodiment of the present disclosure.

[0107] Referring to FIG. 4, a display device (1) according to one embodiment of the present disclosure may include a plurality of light source devices (1000).

[0108] A plurality of light source devices (1000) may be placed in front (in the +X direction) of the bottom chassis (15). For example, the plurality of light source devices (1000) may each be mounted on the bottom chassis (15). That is, the plurality of light source devices (1000) may each be fixed to the bottom chassis (15) and supported by the bottom chassis (15).

[0109] For example, a plurality of light source devices (1000) may be formed in shapes that correspond to each other. In other words, each of the plurality of light source devices (1000) may have approximately the same structure.

[0110] For example, as illustrated in FIG. 5, a light source device (1000A) positioned on the right side (+Y direction side) of the display device (1) among the plurality of light source devices (1000) and a light source device (1000B) positioned on the left side (-Y direction side) of the display device (1) among the plurality of light source devices (1000) may be arranged so that their vertical and horizontal directions are opposite to each other (i.e., so as to be positioned in a state where they are rotated 180 degrees relative to the X axis). According to this arrangement, the plurality of light source devices (1000) may be arranged so as to be symmetrical left and right with respect to the horizontal center of the display device (1), and luminance on both sides with respect to the horizontal center of the display device (1) may be uniformly provided.

[0111] As the plurality of light source devices (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.

[0112] However, the present invention is not limited thereto, and at least some of the plurality of light source devices (1000) may be formed to have different shapes.

[0113] Although FIG. 4 illustrates an example in which a display device (1) includes eight light source devices (1000), the number of light source devices (1000) included in the display device (1) is not limited to that shown in FIG. 4. For example, the number of light source devices (1000) included in the display device (1) may be greater or less than that shown in FIG. 4. Alternatively, for example, the display device (1) may include only one integrally formed light source device (1000).

[0114] Below, the structure of one light source device (1000) among the plurality of light source devices (1000) will be described in detail. In one embodiment, the structure of one light source device (1000) described below can be applied to each of the plurality of light source devices (1000).

[0115] FIG. 5 is an enlarged view of a portion of a substrate and bottom chassis of a display device according to one embodiment of the present disclosure.

[0116] Referring to FIG. 5, a light source device (1000) of a display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (1100) and a substrate (1200) on which the plurality of light sources (1100) are mounted.

[0117] The plurality of light sources (1100) may be arranged in a predetermined pattern so that light is emitted with a uniform brightness. The plurality of light sources (1100) may be arranged so that the distance between one light source and its adjacent light sources is the same. However, the arrangement of the plurality of light sources (1100) is not limited to the arrangement described above, and the plurality of light sources (1100) may be arranged in various ways so that light is emitted with a uniform brightness.

[0118] A description will be given of one light source (1100) among a plurality of light sources (1100). The description of the structure and function of one light source (1100) can be commonly applied to each of the plurality of light sources (1100).

[0119] The light source (1100) may employ a device that, when powered, can emit monochromatic light (light of a specific wavelength, for example, blue light) or white light (for example, light mixed with red, green, and blue light) in various directions. For example, the light source (1100) may include a light emitting diode (LED). The light emitting diode may be implemented in various sizes, and may include, for example, a mini LED and / or a micro LED.

[0120] The light source (1100) may further include an optical dome or optical lens covering the light emitting diode. The optical dome may cover the light emitting diode. The optical dome may prevent or suppress damage to the light emitting diode due to external mechanical action and / or damage to the light emitting diode due to chemical action.

[0121] The light emitting diodes constituting the light source (1100) may be directly attached to the substrate (1200) in a chip-on-board (COB) manner. For example, the light source (111) may include a light emitting diode in which a light emitting diode chip or light emitting diode die is directly attached to the substrate (1200) without separate packaging.

[0122] The light emitting diode constituting the light source (1100) can be manufactured as a flip chip type. The light emitting diode of the flip chip type can be manufactured by directly fusing the electrode pattern of the semiconductor element to the substrate (1200) without using an intermediate medium such as a metal lead (wire) or a ball grid array (BGA) when attaching the light emitting diode, which is a semiconductor element, to the substrate (1200). In this way, since the metal lead (wire) or ball grid array is omitted, the light source (1100) including the light emitting diode of the flip chip type can be miniaturized.

[0123] In the above, a flip-chip type light-emitting diode directly bonded to a substrate (1200) in a chip-on-board manner has been described, but the light source (1100) is not limited to a flip-chip type light-emitting diode. For example, the light source (1100) may include a package type light-emitting diode.

[0124] The light source (1100) can emit light in various directions in front of the reflective sheet (120). The light can be emitted from the light source (1100) toward the diffuser plate (130) as well as from the light source (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).

[0125] 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).

[0126] The process in which light emitted by a light source (1100) or reflected by a reflective sheet (120) travels toward the display panel (20) is as described above.

[0127] The substrate (1200) can fix a plurality of light sources (1100) so that the positions of the plurality of light sources (1100) do not change. In addition, the substrate (1200) can supply power to each of the plurality of light sources (1100) for emitting light.

[0128] The substrate (1200) may include a synthetic resin and / or reinforced glass and / or a printed circuit board (PCB) having conductive power supply lines formed thereon for fixing a plurality of light sources (1100) and supplying power to the plurality of light sources (1100).

[0129] Various types of wiring for supplying power to multiple light sources (1100) can be formed on the substrate (1200). To form various types of wiring on the substrate (1200), the printed circuit board can be formed of multiple layers.

[0130] Meanwhile, the substrate (1200) may include a plurality of substrate bars (1220).

[0131] The substrate bar (1220) may be a configuration that forms at least a portion of the aforementioned substrate (1200), and may include a printed circuit board having a shape extending in one direction.

[0132] At least a portion of a plurality of light sources (1100) may be mounted on each of the plurality of substrate bars (1220). At least a portion of the plurality of light sources (1100) may be mounted on the front surface of the plurality of substrate bars (1220). Here, the front surface of the plurality of substrate bars (1220) means one surface of the plurality of substrate bars (1220) facing the display panel (20).

[0133] The plurality of substrate bars (1220) may be composed of a printed circuit board on which a light source (1100) is mounted.

[0134] A plurality of substrate bars (1220) may be arranged to be spaced apart from each other. The plurality of substrate bars (1220) may be arranged to be spaced apart from each other along a first direction (Z). For example, the first direction (Z) in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other may be approximately parallel to the vertical direction (i.e., the up-down direction) of the display device (1). The plurality of substrate bars (1220) may be arranged to be parallel at positions spaced apart from each other.

[0135] Each of the plurality of substrate bars (1220) may be formed to have a general bar shape. Specifically, each of the plurality of substrate bars (1220) may have a width in a first direction (Z) and may extend in a second direction (Y) different from the first direction (Z). That is, each of the plurality of substrate bars (1220) may have a shape in which the length in the second direction (Y) is longer than the width in the first direction (Z).

[0136] For example, the width direction of each of the plurality of substrate bars (1220) may be approximately parallel to the vertical direction (i.e., up-down direction) of the display device (1). For example, the direction in which each of the plurality of substrate bars (1220) extends may be approximately parallel to the horizontal direction (i.e., left-right direction) of the display device (1).

[0137] 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).

[0138] 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.

[0139] Each of the plurality of substrate bars (1220) may extend in a direction different from the direction in which the plurality of substrate bars (1220) are spaced apart from each other. Specifically, each of the plurality of substrate bars (1220) may extend in a direction (Y direction) orthogonal to the direction in which the plurality of substrate bars (1220) are spaced apart from each other (Z direction). That is, the first direction and the second direction described above may be directions orthogonal to each other.

[0140] 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.

[0141] For example, a plurality of substrate bars (1220) may be arranged so that the distances spaced apart from each other in the first direction (Z) are uniform. In other words, the distances between adjacent pairs of substrate bars (1220) among the plurality of substrate bars (1220) in the first direction (Z) may all be approximately the same. As a result, the uniformity of the luminance of the display device (1) may be improved.

[0142] For example, the plurality of substrate bars (1220) may be formed to have shapes that correspond to each other. For example, the plurality of substrate bars (1220) may have widths that correspond to each other in the first direction (Z direction). For example, the plurality of substrate bars (1220) may have lengths that correspond to each other extending in the second direction (Y direction). For example, the plurality of substrate bars (1220) may be formed to have sizes that correspond to each other.

[0143] 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.

[0144] A reflective sheet (120) may be attached to the front surface of each of the plurality of substrate bars (1220).

[0145] The substrate (1200) 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 aforementioned substrate (1200) and may include a printed circuit board.

[0146] 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).

[0147] 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 from the substrate body (1210) in a second direction (Y). For example, each of the plurality of substrate bars (1220) may extend from one side of the substrate body (1210) in the second direction (Y).

[0148] For example, the substrate body (1210) may extend along the first direction (Z). For example, the substrate body (1210) may have a shape in which the length in the first direction (Z) is longer than the width in the second direction (Y). In this case, the substrate body (1210) may have a structure in which a greater number of substrate bars (1220) are connected as the substrate body (1210) extends along 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 second direction (Y), which is the width direction of the substrate body (1210) (i.e., the direction in which the length is relatively short).

[0149] For example, the substrate body (1210) can be mounted on the bottom chassis (15). As the substrate body (1210) is mounted on the bottom chassis (15) and maintains a fixed position, the plurality of light sources (1100) mounted on the substrate body (1210) can be stably positioned at their respective designed positions. In addition, as the substrate body (1210) is mounted on the bottom chassis (15), the plurality of substrate bars (1220) connected to the substrate body (1210) can be more stably supported by the substrate body (1210).

[0150] For example, some of the plurality of light sources (1100) may be mounted on the substrate body (1210). Some of the plurality of light sources (1100) may be mounted on the front surface of the substrate body (1210). Here, the front surface of the substrate body (1210) means one surface of the substrate body (1210) facing the display panel (20).

[0151] The substrate body (1210) may be composed of a printed circuit board on which a light source (1100) is mounted.

[0152] 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).

[0153] 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 substrate (1200). The substrate (1200) may be formed as an integral printed circuit board including the substrate body (1210) and the plurality of substrate bars (1220). However, alternatively, the substrate body (1210) and the plurality of substrate bars (1220) may be connected to each other through a process of assembling them as separate components that are not formed integrally with each other.

[0154] The structure of the light source device (1000), such as the substrate body (1210) and the substrate bar (1220) described above with reference to FIG. 5 is only an example, and the idea of ​​the present disclosure is not limited thereto.

[0155] In FIG. 5, an embodiment is illustrated in which each of the plurality of substrate bars (1220) extends in the right direction (+Y direction) from the substrate body (1210), but the present invention is not limited thereto, and for example, the plurality of substrate bars (1220) may extend in the left direction (-Y direction) from the substrate body (1210).

[0156] In addition, although FIG. 5 illustrates an embodiment in which the substrate body (1210) extends in the vertical direction (Z direction) of the display device (1), the present invention is not limited thereto, and for example, the substrate body (1210) may extend in the horizontal direction (Y direction).

[0157] In addition, although FIG. 5 illustrates an embodiment in which each of the plurality of substrate bars (1220) extends in the horizontal direction (Y direction) from one side of the substrate body (1210) in the horizontal direction (Y direction), the present invention is not limited thereto, and for example, each of the plurality of substrate bars (1220) may extend in the vertical direction (Z direction) from one side of the substrate body (1210) in the vertical direction (Z direction). In this case, the plurality of substrate bars (1220) may be arranged to be spaced apart from each other in the horizontal direction (Y direction).

[0158] In addition, unlike what has been described above, the first direction, which is the width direction of each of the plurality of substrate bars (1220), or the first direction in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other, or the first direction in which the substrate body (1220) extends, or the second direction in which each of the plurality of substrate bars (1220) extends, may not be parallel to either the vertical direction (Z direction) or the horizontal direction (Y direction) of the display device (1).

[0159] However, for convenience of explanation, the following description is based on an embodiment in which the first direction is parallel to the vertical direction (Z direction) of the display device (1) and the second direction is parallel to the horizontal direction (Y direction) of the display device (1).

[0160] FIG. 6 is an enlarged view of a portion of a substrate of a display device according to one embodiment of the present disclosure.

[0161] Referring to FIG. 6, the structure of one substrate bar (1220) among the plurality of substrate bars (1220) illustrated in FIG. 5 will be described in detail. The structure of the substrate bar (1220) illustrated in FIG. 6 can be applied to correspond to the structure of each of the plurality of substrate bars (1220).

[0162] Referring to FIG. 6, a substrate bar (1220) of a display device (1) according to one embodiment of the present disclosure may include a central extension portion (1221) extending in one direction, and protrusions (1222a, 1222b) protruding from the central extension portion (1221). The central extension portion (1221) and the protrusions (1222a, 1222b) may each be a part of the substrate bar (1220) and may constitute a part of the substrate (1200).

[0163] The central extension (1221) may extend in the second direction (Y direction). The width direction of the central extension (1221) may be parallel to the first direction (Z direction). The central extension (1221) may have a shape in which the extension length in the second direction (Y direction) is longer than the width in the first direction (Z direction).

[0164] The central extension (1221) may be provided at the center of the substrate bar (1220). The central extension (1221) may include an area extending through the center of the substrate bar (1220) in the second direction (Y direction).

[0165] For example, as illustrated in FIG. 6, the central extension (1221) may include an area having a roughly rectangular bar shape.

[0166] The substrate bar (1220) may include a plurality of first protrusions (1222a) protruding from one side of the central extension (1221). Each of the plurality of first protrusions (1222a) may protrude from one side of the central extension (1221) in a first direction (Z direction). Each of the plurality of first protrusions (1222a) may protrude from one side of the central extension (1221) toward the outside of the central extension (1221). Each of the plurality of first protrusions (1222a) may extend from the central extension (1221) in the first direction (Z direction). For example, each of the plurality of first protrusions (1222a) may extend upward from an upper side of the central extension (1221).

[0167] For example, the first protrusion (1222a) can be formed integrally with the central extension (1221).

[0168] A plurality of first protrusions (1222a) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first protrusions (1222a) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0169] For example, a plurality of first protrusions (1222a) may be arranged at equal intervals along the second direction (Y direction).

[0170] For example, a plurality of first protrusions (1222a) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of first protrusions (1222a) that protrude in the first direction (Z direction) from the central extension (1221) may correspond to each other.

[0171] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of first protrusions (1222a). Hereinafter, the light source mounted on each of the plurality of first protrusions (1222a) is referred to as a first-side light source (1110). For example, one first-side light source (1110) may be mounted on one first protrusion (1222a), but is not limited thereto.

[0172] A plurality of first side light sources (1110) may be arranged at positions spaced apart from the central extension (1221) in the first direction (Z direction). As illustrated in FIG. 6, the plurality of first side light sources (1110) may be arranged to be deflected upward from the central extension (1221).

[0173] A plurality of first-side light sources (1110) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first-side light sources (1110) may be arranged such that their positions in the first direction (Z) correspond to each other.

[0174] For example, a plurality of first side light sources (1110) can be arranged at equal intervals along the second direction (Y direction).

[0175] The substrate bar (1220) may include a plurality of second protrusions (1222b) protruding from the other side of the central extension (1221). The plurality of second protrusions (1222b) may each protrude from the other side of the central extension (1221) in the first direction (Z direction). The other side of the central extension (1221) as referred to here means a side different from one side of the central extension (1221) from which the first protrusions (1222a) protrude. For example, the plurality of second protrusions (1222b) may protrude in a direction opposite to the protrusion direction of the plurality of first protrusions (1222a) from the other side of the central extension (1221) opposite to one side of the central extension (1221) from which the plurality of first protrusions (1222a) protrude. Each of the plurality of first protrusions (1222a) can protrude from the other side of the central extension (1221) toward the outside of the central extension (1221).

[0176] Each of the plurality of second protrusions (1222b) may extend in the first direction (Z direction) from the central extension (1221). For example, each of the plurality of second protrusions (1222b) may extend downward from the lower side of the central extension (1221).

[0177] For example, the second protrusion (1222b) may be formed integrally with the central extension (1221).

[0178] A plurality of second protrusions (1222b) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second protrusions (1222b) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0179] For example, a plurality of second protrusions (1222b) may be arranged at equal intervals along the second direction (Y direction).

[0180] For example, the plurality of second protrusions (1222b) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of second protrusions (1222b) that protrude in the first direction (Z direction) from the central extension (1221) may correspond to each other.

[0181] For example, the length of each of the plurality of first protrusions (1222a) protruding from the central extension (1221) and the length of each of the plurality of second protrusions (1222b) protruding from the central extension (1221) may be approximately equal to each other.

[0182] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of second protrusions (1222b). Hereinafter, the light source mounted on each of the plurality of second protrusions (1222b) is referred to as a second-side light source (1120). For example, one second-side light source (1120) may be mounted on one second protrusion (1222b), but is not limited thereto.

[0183] A plurality of second side light sources (1120) may be arranged at positions spaced apart from the central extension (1221) in the first direction (Z direction). As illustrated in FIG. 6, the plurality of second side light sources (1120) may be arranged to be deflected downward from the central extension (1221).

[0184] A plurality of second-side light sources (1120) may be arranged relative to each other along the second direction (Y direction). For example, the plurality of second-side light sources may be arranged such that their positions in the first direction (Z) correspond to each other.

[0185] For example, a plurality of second side light sources (1120) can be arranged at equal intervals along the second direction (Y direction).

[0186] Here, some areas of the central extension (1221) from which the plurality of first protrusions (1222a) protrude and other areas of the central extension (1221) from which the plurality of second protrusions (1222b) extend may be arranged to intersect along the second direction (Y direction). In other words, the first protrusions (1222a) and the second protrusions (1222b) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be arranged so as not to be parallel to each other in the first direction (Z).

[0187] With this configuration, the first side light source (1110) and the second side light source (1120) can be arranged to cross each other along the second direction (Y direction). In one substrate bar (1220), the plurality of light sources (1100) can be arranged such that the first side light source (1110) is arranged on one side in the first direction (Z) and the second side light source (1120) is arranged on the other side so as to cross each other along the second direction (Y direction), thereby improving the uniformity of brightness by the plurality of light sources (1100). In other words, the plurality of light sources (1100) in one substrate bar (1220) can be arranged in a zigzag pattern.

[0188] 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.

[0189] The substrate bar (1220) may include a plurality of first recessed portions (1223a). Each of the plurality of first recessed portions (1223a) may be formed between a pair of adjacent first protrusions (1222a) among the plurality of first protrusions (1222a). That is, the first recessed portion (1223a) may be defined as a portion of the substrate bar (1220) formed between a pair of adjacent first protrusions (1222a).

[0190] A plurality of first recessed portions (1223a) may be provided on one side of the central extension portion (1221) in the first direction (Z). For example, a plurality of first recessed portions (1223a) may be provided on the upper side of the central extension portion (1221).

[0191] The plurality of first recessed portions (1223a) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relatively compared to the plurality of first protrusions (1222a).

[0192] A plurality of first recessed portions (1223a) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first recessed portions (1223a) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0193] For example, a plurality of first recessed portions (1223a) may be arranged at equal intervals along the second direction (Y direction).

[0194] For example, a plurality of first recessed portions (1223a) can be formed to have shapes that correspond to each other.

[0195] The substrate bar (1220) may include a plurality of second recessed portions (1223b). Each of the plurality of second recessed portions (1223b) may be formed between a pair of second protrusions (1222b) that are adjacent to each other among the plurality of second protrusions (1222b). That is, the second recessed portion (1223b) may be defined as a portion of the substrate bar (1220) that is formed between a pair of second protrusions (1222b) that are adjacent to each other.

[0196] A plurality of second recessed portions (1223b) may be provided on the other side of the central extension portion (1221) in the first direction (Z). The other side of the central extension portion (1221) as referred to here means a side different from one side of the central extension portion (1221) where the first recessed portion (1223a) is provided. For example, a plurality of second recessed portions (1223b) may be provided on the lower side of the central extension portion (1221).

[0197] The plurality of second recessed portions (1223b) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relatively compared to the plurality of second protrusions (1222b).

[0198] A plurality of second recessed portions (1223b) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second recessed portions (1223b) may be arranged such that their positions in the first direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0199] For example, a plurality of second recessed portions (1223b) may be arranged at equal intervals along the second direction (Y direction).

[0200] For example, a plurality of second recessed portions (1223b) can be formed to have shapes that correspond to each other.

[0201] Some areas of the central extension (1221) having a plurality of first recessed portions (1223a) provided on one side and other areas of the central extension (1221) having a plurality of second recessed portions (1223b) provided on the other side may be arranged to intersect along the second direction (Y direction). In other words, the first recessed portions (1223a) and the second recessed portions (1223b) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b) may be arranged not to be parallel to each other in the first direction (Z).

[0202] For example, each of the plurality of first protrusions (1222a) may be arranged parallel to one of the plurality of second recessed portions (1223b) that is closest to the plurality of second recessed portions (1223b) in the first direction (Z). That is, the plurality of first protrusions (1222a) and the plurality of second recessed portions (1223b) may be arranged parallel to each other in the first direction (Z).

[0203] Also, as an example, each of the plurality of second protrusions (1222b) may be arranged parallel to one of the plurality of first recesses (1223a) that is closest to the first recess (1223a) in the first direction (Z). That is, the plurality of second protrusions (1222b) and the plurality of first recesses (1223a) may be arranged parallel to each other in the first direction (Z).

[0204] Due to this, the substrate bar (1220) can have a shape that extends in a zigzag pattern overall.

[0205] The shape of each edge of the plurality of first recessed portions (1223a) may be different from the shape of each edge of the plurality of first protrusions (1222a). In other words, the shape of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the shape of the outer surface of each of the plurality of first protrusions (1222a).

[0206] For example, the curvature of the edge of each of the plurality of first recessed portions (1223a) may be different from the curvature of the edge of each of the plurality of first protrusions (1222a). In other words, the curvature of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the curvature of the outer surface of each of the plurality of first protrusions (1222a).

[0207] Alternatively, the shape of the edge of each of the plurality of first recessed portions (1223a) may be different from the shape of the edge of each of the plurality of second protrusions (1222b). In other words, the shape of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the shape of the outer surface of each of the plurality of second protrusions (1222b).

[0208] For example, the curvature of the edge of each of the plurality of first recessed portions (1223a) may be different from the curvature of the edge of each of the plurality of second protrusions (1222b). In other words, the curvature of the outer surface of each of the plurality of first recessed portions (1223a) may be different from the curvature of the outer surface of each of the plurality of second protrusions (1222b).

[0209] The shape of each edge of the plurality of second recessed portions (1223b) may be different from the shape of each edge of the plurality of second protrusions (1222b). In other words, the shape of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the shape of the outer surface of each of the plurality of second protrusions (1222b).

[0210] For example, the curvature of the edge of each of the plurality of second recessed portions (1223b) may be different from the curvature of the edge of each of the plurality of second protrusions (1222b). In other words, the curvature of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the curvature of the outer surface of each of the plurality of second protrusions (1222b).

[0211] Alternatively, the shape of the edge of each of the plurality of second recessed portions (1223b) may be different from the shape of the edge of each of the plurality of first protrusions (1222a). In other words, the shape of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the shape of the outer surface of each of the plurality of first protrusions (1222a).

[0212] For example, the curvature of the edge of each of the plurality of second recessed portions (1223b) may be different from the curvature of the edge of each of the plurality of first protrusions (1222a). In other words, the curvature of the outer surface of each of the plurality of second recessed portions (1223b) may be different from the curvature of the outer surface of each of the plurality of first protrusions (1222a).

[0213] The 'edge of the first protrusion (1222a)' or 'outer surface of the first protrusion (1222a)' mentioned here refers to a part of the outer edge portion of the substrate bar (1220), and means the outer edge portion of the portion of the substrate bar (1220) where the first protrusion (1222a) is provided. The 'edge of the first protrusion (1222a)' may be used in a corresponding meaning with terms such as 'outline of the first protrusion (1222a)' or 'profile of the first protrusion (1222a).

[0214] Likewise, the 'edge of the second protrusion (1222b)' or 'outer surface of the second protrusion (1222b)' mentioned here refers to 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 (1222b) is provided in the substrate bar (1220). The 'edge of the second protrusion (1222b)' may be used in a corresponding meaning with terms such as 'outline of the second protrusion (1222b)' or 'profile of the second protrusion (1222b).

[0215] Likewise, the 'edge of the first recessed portion (1223a)' or 'outer surface of the first recessed portion (1223a)' mentioned here means a part of the outer edge portion of the substrate bar (1220), and an outer edge portion of the portion of the substrate bar (1220) where the first recessed portion (1223a) is provided. In other words, the 'edge of the first recessed portion (1223a)' or 'outer surface of the first recessed portion (1223a)' means a part of the outer edge portion of the substrate bar (1220), and an outer edge portion provided between the outer edges of each of a pair of adjacent first protrusions (1222a). The 'edge of the first recessed portion (1223a)' may be used in a corresponding meaning with terms such as 'outline of the first recessed portion (1223a)' or 'profile of the first recessed portion (1223a).

[0216] Likewise, the 'edge of the second recessed portion (1223b)' or 'outer surface of the second recessed portion (1223b)' mentioned here means a part of the outer edge portion of the substrate bar (1220), and an outer edge portion of the portion where the second recessed portion (1223b) is provided in the substrate bar (1220). In other words, the 'edge of the second recessed portion (1223b)' or 'outer surface of the second recessed portion (1223b)' means a part of the outer edge portion of the substrate bar (1220), and an outer edge portion provided between the outer edges of each of a pair of adjacent second protrusions (1222b). The 'edge of the second recessed portion (1223b)' may be used in a corresponding meaning with terms such as 'outline of the second recessed portion (1223b)' or 'profile of the second recessed portion (1223b).

[0217] In addition, the meaning of the expression 'the shape of the edge or outer surface of the recessed portion (1223a, 1223b) is different from the shape of the edge or inner surface of the protruding portion (1222a, 1222b)' described above does not simply mean that the protruding portion (1222a, 1222b) has a protruding shape and the recessed portion (1223a, 1223b) has a sunken shape, so that the shapes are different from each other, but that the shapes of the lines connected along each edge are different from each other.

[0218] Referring to FIG. 6, more specifically, the edges of each of the plurality of first protrusions (1222a) and the edges of each of the plurality of second recessed portions (1223b) may have different curvatures at points corresponding to each other in the first direction (Z). For example, a first point (Pa) may be defined on one of the plurality of first protrusions (1222a) and a second point (Pd) may be defined on one of the plurality of second recessed portions (1223b). The first point (Pa) and the second point (Pd) may be positioned to correspond to each other in the first direction (Z). Here, the curvature (radius of curvature r1) at the first point (Pa) and the curvature (radius of curvature r4) at the second point (Pd) may be different from each other.

[0219] The edges of each of the plurality of second protrusions (1222b) and the edges of each of the plurality of first recessed portions (1223a) may have different curvatures at points corresponding to each other in the first direction (Z). For example, a third point (Pb) may be defined on one second protrusion (1222b) of the plurality of second protrusions (1222b) and a fourth point (Pc) may be defined on one first recess (1223a) of the plurality of first recessed portions (1223a). The third point (Pb) and the fourth point (Pc) may be positioned to correspond to each other in the first direction (Z). Here, the curvature (radius of curvature r2) at the third point (Pb) and the curvature (radius of curvature r3) at the fourth point (Pc) may be different from each other.

[0220] According to the embodiment illustrated in FIG. 6, the shape of each edge of the plurality of first protrusions (1222a) and the shape of each edge of the plurality of second protrusions (1222b) may correspond to each other. In other words, the shape of the outer surface of each of the plurality of first protrusions (1222a) and the shape of the outer surface of each of the plurality of second protrusions (1222b) may correspond to each other. Specifically, the edge of each of the plurality of first protrusions (1222a) and the edge of each of the plurality of second protrusions (1222b) may have curvatures that correspond to each other. In other words, the outer surface of each of the plurality of first protrusions (1222a) and the outer surface of each of the plurality of second protrusions (1222b) may have curvatures that correspond to each other.

[0221] In addition, according to the embodiment illustrated in FIG. 6, the shape of each edge of the plurality of first recessed portions (1223a) and the shape of each edge of the plurality of second recessed portions (1223b) may correspond to each other. In other words, the shape of each outer surface of the plurality of first recessed portions (1223a) and the shape of each outer surface of the plurality of second recessed portions (1223b) may correspond to each other. Specifically, the edge of each of the plurality of first recessed portions (1223a) and the edge of each of the plurality of second recessed portions (1223b) may have curvatures that correspond to each other. In other words, the outer surface of each of the plurality of first recessed portions (1223a) and the outer surface of each of the plurality of second recessed portions (1223b) may have curvatures that correspond to each other.

[0222] At this time, the shape of the edge of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the shape of the edge of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b). In other words, the shape of the outer surface of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the shape of the outer surface of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b). Specifically, as illustrated in FIG. 6, the curvature of the edge of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the curvature of the edge of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b). In other words, the curvature of the outer surface of each of the plurality of first protrusions (1222a) and the plurality of second protrusions (1222b) may be different from the curvature of the outer surface of each of the plurality of first recessed portions (1223a) and the plurality of second recessed portions (1223b).

[0223] In this way, since the shapes of each protrusion (1222a, 1222b) of the substrate bar (1220) and each recess (1223a, 1223b) are different, the efficiency of the process for manufacturing the substrate (1200) can be improved. For example, when performing a process for manufacturing a plurality of substrates (1200) from one substrate material, when the shapes of each protrusion (1222a, 1222b) and each recess (1223a, 1223b) arranged side by side are different from each other, it can be easier to separate the substrate bars (1220) included in different substrates (1200). Through this, the manufacturing cost of the product can be reduced.

[0224] More specifically, the curvature of the edge of each of the plurality of first protrusions (1222a) may be set to be greater than the curvature of the edge of each of the plurality of first recessed portions (1223a). In other words, the radius of curvature (r1) of the edge of each of the plurality of first protrusions (1222a) may be smaller than the radius of curvature (r3) of the edge of each of the plurality of first recessed portions (1223a).

[0225] Referring to FIG. 6 for more detailed explanation, the curvature at the first point (Pa) on the first protrusion (1222a) may be smaller than the curvature at the fourth point (Pc) of the first recess (1223a).

[0226] The curvature of each edge of the plurality of first protrusions (1222a) may be set to be greater than the curvature of each edge of the plurality of second recessed portions (1223b). In other words, the radius of curvature (r1) of each edge of the plurality of first protrusions (1222a) may be smaller than the radius of curvature (r4) of each edge of the plurality of second recessed portions (1223b).

[0227] Referring to FIG. 6, more specifically, the curvature at the first point (Pa) on the first protrusion (1222a) may be smaller than the curvature at the second point (Pd) of the second recess (1223b).

[0228] The curvature of each edge of the plurality of second protrusions (1222b) may be set to be greater than the curvature of each edge of the plurality of second recessed portions (1223b). In other words, the radius of curvature (r2) of the edge of each of the second protrusions (1222b) may be smaller than the radius of curvature (r4) of the edge of each of the plurality of second recessed portions (1223b).

[0229] Referring to FIG. 6 for more detailed explanation, the curvature at the third point (Pb) on the second protrusion (1222b) may be smaller than the curvature at the second point (Pd) of the second recess (1223b).

[0230] The curvature of each edge of the plurality of second protrusions (1222b) may be set to be greater than the curvature of each edge of the plurality of first recessed portions (1223a). In other words, the radius of curvature (r2) of each edge of the plurality of second protrusions (1222b) may be smaller than the radius of curvature (r3) of each edge of the plurality of first recessed portions (1223a).

[0231] Referring to FIG. 6 for more detailed explanation, the curvature at the third point (Pb) on the second protrusion (1222b) may be smaller than the curvature at the fourth point (Pc) of the first recess (1223a).

[0232] That is, the curvature of each protrusion (1222a, 1222b) provided on the substrate bar (1220) may be provided to be greater than the curvature of each recessed portion (1223a, 1223b). In other words, the radius of curvature of each protrusion (1222a, 1222b) provided on the substrate bar (1220) may be smaller than the radius of curvature of each recessed portion (1223a, 1223b).

[0233] When the substrate bar (1220) has such a structure, the efficiency of the process for manufacturing the substrate (1200) can be improved. For example, when performing a process for manufacturing a plurality of substrates (1200) from a single substrate material, if the curvature of each protrusion (1222a, 1222b) arranged in parallel is greater than the curvature of each recess (1223a, 1223b), the process for separating the substrate bars (1220) included in different substrates (1200) can be further simplified. In addition, the portion unnecessarily removed during the process for manufacturing a plurality of substrates (1200) from a single substrate material can be reduced, and waste of materials can be prevented, thereby promoting cost reduction. Through this, the manufacturing cost of the product can be reduced.

[0234] In addition, as the radius of curvature of the protrusions (1222a, 1222b) in the substrate bar (1220) becomes smaller, the length protruding from the central extension (1221) relative to the area of ​​each protrusion (1222a, 1222b) may increase. As a result, the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (1220) relative to the overall area of ​​the plurality of substrate bars (1220) may decrease, and the brightness and uniformity of brightness of the display device (1) may be improved.

[0235] In addition, as the radius of curvature of the recessed portion (1223a, 1223b) in the substrate bar (1220) increases, the amount of area reduction corresponding to the recessed portion (1223a, 1223b) of the substrate bar (1220) can increase compared to the depth at which the recessed portion (1223a, 1223b) is sunk between a pair of protrusions (1222a or 1222b).

[0236] Meanwhile, FIG. 6 illustrates an embodiment in which the shapes (particularly, curvatures) of the edges of each of the plurality of first protrusions (1222a) and the edges of each of the plurality of second protrusions (1222b) correspond to each other, and the shapes (particularly, curvatures) of the edges of each of the plurality of first recessed portions (1223a) and the edges of each of the plurality of second recessed portions (1223b) correspond to each other. In this case, the manufacturing process of the substrate (1200) can be simplified, the layout of the substrate (1200) can be easily designed, and thus efficiency can be improved in the design and manufacturing process of the product, and the manufacturing cost of the product can be reduced.

[0237] When the substrate bar (1220) has such a structure, the efficiency of the process for manufacturing the substrate (1200) can be improved.

[0238] FIG. 7 is an enlarged view of a portion of an example of a light source device of a display device according to one embodiment of the present disclosure.

[0239] Referring to FIG. 7, the substrate (1200) of the light source device (1000) may include a substrate body (1210) connected to a plurality of substrate bars (1220).

[0240] The substrate body (1210) can extend in the first direction (Z).

[0241] Some of the light sources (1130) among the plurality of light sources (1100) may be mounted on the substrate body (1210). For convenience, the light sources (1130) mounted on the substrate body (1210) are referred to as body light sources (1130) hereinafter.

[0242] 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.

[0243] Some of the plurality of body light sources (1130) may be arranged in parallel with the plurality of light sources (i.e., the first bar light sources (1110)) mounted on the plurality of first protrusions (1222a) provided on one of the plurality of substrate bars (1220) along the second direction (Z). In this case, the body light sources (1130) and the first bar light sources (1110) may be arranged at equal intervals from each other along the second direction (Z).

[0244] Other portions of the plurality of body light sources (1130) may be arranged in parallel with the plurality of light sources (i.e., the second bar light sources (1120)) mounted on the plurality of second protrusions (1222b) provided on one of the plurality of substrate bars (1220) along the second direction (Z). In this case, the body light sources (1130) and the second bar light sources (1120) may be arranged at equal intervals from each other along the second direction (Z).

[0245] 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).

[0246] The light source device (1000) may include a plurality of driving elements (1400) mounted on a 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 substrate (1200).

[0247] For example, a plurality of light sources (1100) may be divided into a plurality of dimming blocks each including at least one light source (1100), and a plurality of driving elements (1400) may be arranged to control the plurality of dimming blocks.

[0248] 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).

[0249] For example, as illustrated in FIG. 7, a plurality of driving elements (1400) may be mounted on the front surface (1210F) of the substrate body (1210). The front surface (1210F) of the substrate body (1210) referred to herein may include one side of the substrate body (1210) facing the display panel (20).

[0250] A plurality of driving elements (1400) can be mounted on the front surface (1210F) of the substrate body (1210).

[0251] The substrate body (1210) has a width (W1) in the second direction (Y), and each of the plurality of substrate bars (1220) can have a width (W2) in the first direction (Z).

[0252] Since the plurality of driving elements (1400-1) are mounted on the substrate body (1210), the width (W1) of the substrate body (1210) in the second direction (Y) may be wider than the width (W2) of each of the plurality of substrate bars (1220) in the first direction (Z) on which the plurality of driving elements (1400-1) are not mounted.

[0253] A reflective sheet (120) may be attached to the front surface of the substrate body (1210). As a result, a penetration portion through which a plurality of driving elements (1400) penetrate 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 through the corresponding penetration portions.

[0254] In this case, the reflectivity of the reflective sheet (120) may be reduced at the locations of the plurality of driving elements (1400) and the corresponding penetrating portions. As a result, the uniformity of the brightness of the display device (1) may be reduced.

[0255] To solve this problem, a plurality of driving elements (1400) may be arranged on the front surface (1210F) of the substrate body (1210) so that their positions in the first direction (Z) 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 second direction (Y) are different from those of other driving elements (1400).

[0256] More specifically, as illustrated in FIG. 7, the plurality of driving elements (1400) may include driving elements (1400A) in a first row and driving elements (1400B) in a second row.

[0257] The driving elements (1400A) of the first row can be arranged along the first 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 first direction (Z).

[0258] Additionally, the driving elements (1400B) of the second row may be arranged along the first 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 first direction (Z).

[0259] Here, the driving elements (1400A) of the first row and the driving elements (1400B) of the second row may be arranged to be spaced apart from each other. Specifically, each driving element (1400A) included in the driving elements (1400A) of the first row and each driving element (1400B) included in the driving elements (1400B) of the second row may be arranged to be spaced apart from each other in the second direction (Y). That is, a plurality of driving elements (1400A) may be arranged in a zigzag pattern on the front surface (1210F) of the substrate body (1210).

[0260] By this structure, the decrease in brightness due to the driving element (1400) can be prevented from being concentrated in a specific area, and the uniformity of the brightness of the display device (1) can be improved.

[0261] Meanwhile, as illustrated in FIG. 7, a plurality of driving elements (1400A, 1400B) are mounted on the substrate body (1210) and arranged in a zigzag pattern along the first direction (Z) on the front surface (1210F) of the substrate body (1210), so that wiring of the substrate (1200) connected to the plurality of driving elements (1400A, 1400B) can be simplified.

[0262] That is, conventionally, a plurality of driving elements (1400) are arranged on both the substrate body (1210) and the plurality of substrate bars (1220) or only on the plurality of substrate bars (1220). Therefore, since the plurality of driving elements (1400) are scattered over the entire area of ​​the substrate (1200), the wiring of the plurality of driving elements (1400) is complex and the number of via holes for wiring connection is also large. However, as illustrated in FIG. 7, the plurality of driving elements (1400) are mounted in a group only on the substrate body (1210) and are arranged in a zigzag pattern along the first direction (Z) of the substrate body (1210), so that the wiring of the plurality of driving elements (1400) can be simplified.

[0263] Meanwhile, the display device (1) can perform local dimming, which varies the brightness of light in each area of ​​the light source device (1000) in conjunction with the output image, so as to improve power consumption while increasing the contrast ratio.

[0264] For example, the display device (1) can reduce the brightness of the light of the light source (1100) of the light source device (1000) corresponding to the dark portion of the image in order to darken the dark portion of the image, and can increase the brightness of the light of the light source (1100) of the light source device (1000) corresponding to the bright portion of the image in order to brighten the bright portion of the image. As a result, the contrast ratio or brightness ratio of the image can be improved.

[0265] The display device (1) divides the light source device (1000) into a plurality of blocks, and can independently control the current for each block according to the input image. The image transmission of the display device (1) is performed through a method of local dimming operation for each frame, and the current operation can be controlled according to the number of blocks of divided light sources (1100) within the light source device (1000).

[0266] As a result, the display device (1) can effectively improve the contrast ratio by lowering the supply current to the dimming block corresponding to the dark area of ​​the input image and increasing the supply current to the dimming block corresponding to the bright area of ​​the input image.

[0267] For local dimming, a plurality of light sources (1100) included in a light source device (1000) may be divided into a plurality of dimming blocks (200). In addition, each of the plurality of dimming blocks (200) may include at least one light source. Light sources controlled by a single circuit may be referred to as a dimming block. The number of light sources included in a single dimming block may be adjusted.

[0268] According to various embodiments, the k plurality of light sources (1100) may be classified into n dimming blocks or m dimming blocks (k, n, m are natural numbers). For example, the k plurality of light sources (1100) may be classified into n dimming blocks, each of which includes k / n light sources (1100). k / n may mean a value obtained by dividing k by n.

[0269] The light source device (1000) can supply the same driving current to light sources (1100) belonging to the same dimming block (200), and the light sources (1100) belonging to the same dimming block (200) can emit light of the same brightness.

[0270] In addition, the light source device (1000) can supply different driving currents to light sources (111) belonging to different dimming blocks (200) according to dimming data, and the light sources (1100) belonging to different dimming blocks (200) can emit light of different brightness.

[0271] The light source device (1000) can output surface light by diffusing light emitted from a plurality of light sources (1100). The display panel (20) includes a plurality of pixels, and each of the plurality of pixels can be controlled to allow light to pass through or block light. An image can be formed by light passing through each of the plurality of pixels.

[0272] At this time, the light source device (1000) can turn off multiple light sources corresponding to dark portions of the image to darken the dark portions of the image. As a result, the dark portions of the image become darker, thereby improving the contrast ratio of the image.

[0273] In this way, the operation of controlling the plurality of light sources so that the light source device (1000) emits light in an area corresponding to a bright part of the image and controlling the plurality of light sources so that they do not emit light in an area corresponding to a dark part of the image is referred to as “local dimming” below.

[0274] For local dimming, a plurality of light sources (1100) included in a light source device (1000) may be divided into a plurality of dimming blocks (200). The number and arrangement of the dimming blocks are not limited.

[0275] In addition, the plurality of driving elements (1400) of the light source device (1000) can control the driving current supplied to the light sources included in each of the plurality of dimming blocks (200). The driving elements (1400) can be provided to correspond to at least one dimming block (200), respectively. In other words, the driving elements (1400) can each drive a dimming block (200).

[0276] The driving element (1400) may be a driving integrated circuit chip for driving a plurality of dimming blocks (200).

[0277] In this way, since the light sources (1100) belonging to the dimming block (200) are connected to each other in series, the light sources (1100) included in the dimming block (200) operate as one unit and can form a light source block as one unit.

[0278] Therefore, hereinafter, "supplying driving current to the dimming block" may be interpreted as having the same meaning as "supplying driving current to the light sources included in the dimming block." For example, the dimming block may include 12 light sources, but the number and arrangement of the light sources included in each of the dimming blocks are not limited.

[0279] FIG. 8 is a diagram illustrating an example of a dimming block of a light source device of a display device according to one embodiment of the present disclosure.

[0280] Referring to FIG. 8, as described above, the light source device (1000) may include a substrate (1200) provided with a plurality of light sources (1100) and a driving element (1400). The substrate (1200) may include a substrate body (1210) extending along a first direction (Z), and a plurality of substrate bars (1220) extending from the substrate body (1210) in a second direction (Y) and arranged to be spaced apart from each other along the first direction (Z). A plurality of first light sources (1130) among the plurality of light sources (1100) may be provided on the substrate body (1200). A plurality of second light sources (1110, 1120) may be provided on the plurality of substrate bars (1220). The driving element (1400) is provided only in the substrate body (1210) among the substrate body (1210) and a plurality of substrate bars (1220), and can drive at least one dimming block.

[0281] In this way, the light source device (1000) of the present disclosure can reduce the cost and manufacturing cost of the product by including a substrate (1200) having a structure including a substrate body (1210) and a plurality of substrate bars (1220) extending from the substrate body (1201), and since the driving element (1400) is provided only in the substrate body (1210) among the substrate body (1210) and the plurality of substrate bars (1220), the wiring of the driving element (1400) and the wiring between the driving element (1400) and the dimming block controlled by the driving element (1400) can be simplified. Therefore, the light source device (1000) of the display device (1) according to one embodiment of the present disclosure can implement local dimming in a more diverse manner than before.

[0282] More specifically, the substrate (1200) can be divided into a substrate body (1230) and a plurality of substrate bars (1220).

[0283] Local dimming for a dimming block (200) on a single substrate (1200) can be implemented as follows.

[0284] First, local dimming can be implemented with a first dimming block (210) in which some or all of the light sources in the substrate body (1230) constitute one dimming block.

[0285] Additionally, local dimming can be implemented by a second dimming block (220) in which some or all of the light sources in the plurality of substrate bars (1220) constitute one dimming block.

[0286] Additionally, local dimming can be implemented with a third dimming block (230) that combines light sources in the substrate body (1230) and multiple substrate bars (1220) to form one dimming block.

[0287] When multiple substrates (1200) are applied to one set, local dimming can be implemented by selectively and freely using a first dimming block (210) including first light sources (1130) located only in the substrate body (1230) among the dimming blocks (200), a second dimming block (220) including second light sources (1110, 1120) located only in the plurality of substrate bars (1220), and / or a third dimming block (230) including light sources located in the substrate body (1230) and the plurality of substrate bars (1220).

[0288] At least one dimming block (200) driven by one driving element (1400) may include at least one of a first dimming block (210), a second dimming block (220), and a third dimming block (230).

[0289] As described above, the display device (1) according to one embodiment of the present disclosure can provide a clearer picture quality and a more immersive screen to the viewer by implementing local dimming by configuring various dimming blocks with a degree of freedom of local dimming in a backlight unit using a wavy finger type PCB. The display device (1) according to one embodiment of the present disclosure can configure the same inch using LEDs at a level of about 20 to 25% of that of a conventional method. Although the number of local dimming dimming blocks is also reduced in proportion to the reduced number of LEDs, good picture quality can be configured by configuring local dimming even with a small number of LEDs, and the effect of reducing material costs can be achieved. In addition, since the shape of the PCB has changed, local dimming can be freely implemented in various ways.

[0290] FIG. 9 is a control block diagram of a display device according to one embodiment of the present disclosure.

[0291] Referring to FIG. 9, the display device (1) may include a content receiving unit (80), an image processing unit (90), a panel driver (30), a display panel (20), a dimming driver (170), and a light source device (1000).

[0292] The content receiving unit (80) may include a receiving terminal (81) and a tuner (82) that receive content including video signals and / or audio signals from content sources.

[0293] The receiving terminal (81) can receive video signals and audio signals from content sources via a cable. For example, the receiving terminal (81) can include a component (YPbPr / RGB) terminal, a composite video blanking and sync (CVBS) terminal, an audio terminal, a High Definition Multimedia Interface (HDMI) terminal, a Universal Serial Bus (USB) terminal, etc.

[0294] The tuner (82) can receive broadcast signals from a broadcast reception antenna or a wired cable. In addition, the tuner (82) can extract broadcast signals of a channel selected by the user from among the broadcast signals. For example, the tuner (82) can pass broadcast signals having a frequency corresponding to the channel selected by the user among a plurality of broadcast signals received through a broadcast reception antenna or a wired cable, and block broadcast signals having other frequencies.

[0295] In this way, the content receiving unit (80) can receive video signals and audio signals from content sources through the receiving terminal (81) and / or the tuner (82). The content receiving unit (80) can output the video signals and / or audio signals received through the receiving terminal (81) and / or the tuner (82) to the image processing unit (90).

[0296] The image processing unit (90) may include a processor (91) that processes image data and a memory (92) that stores / remembers a program and data for processing the image data.

[0297] The memory (92) can store programs and data for processing video signals and / or audio signals. In addition, the memory (92) can temporarily store data generated while processing the video signal and / or audio signal.

[0298] Memory (92) may include non-volatile memory such as ROM (Read Only Memory) and flash memory, and volatile memory such as S-RAM (Static Random Access Memory, S-RAM) and D-RAM (Dynamic Random Access Memory).

[0299] The processor (91) can receive a video signal and / or an audio signal from the content receiving unit (80). The processor (91) can decode the video signal into image data. The processor (91) can generate dimming data from the image data. In addition, the processor (91) can output the image data and dimming data to the panel driver (30) and the dimming driver (170), respectively.

[0300] In this way, the image processing unit (90) can generate image data and dimming data from the video signal acquired by the content receiving unit (80). In addition, the image processing unit (90) can transmit the image data and dimming data to the display panel (20) and the light source device (1000), respectively.

[0301] Image data may include information regarding the intensity of light transmitted by each of a plurality of pixels (or a plurality of sub-pixels) included in the display panel (20). The image data may be provided to the display panel (20) via a panel driver (30).

[0302] The display panel (20) includes a plurality of pixels capable of transmitting or blocking light, and the plurality of pixels are arranged in a matrix shape. In other words, the plurality of pixels can be arranged in a plurality of rows and a plurality of columns.

[0303] The panel driver (30) can receive image data from the image processing unit (90). The panel driver (30) can drive the display panel (20) according to the image data. In other words, the panel driver (30) can convert image data, which is a digital signal (hereinafter referred to as “digital image data”), into an analog image signal, which is an analog voltage signal. The panel driver (30) can provide the converted analog image signal to the display panel (20). Depending on the analog image signal, the optical properties (e.g., light transmittance) of a plurality of pixels included in the display panel (20) can change.

[0304] The panel driver (30) may include, for example, a timing controller, a data driver, a scan driver, etc.

[0305] The timing controller can receive image data from the image processing unit (90). The timing controller can output image data and a driving control signal to the data driver and the scan driver. The driving control signal can include a scan control signal and a data control signal. The scan control signal and the data control signal can be used to control the operation of the scan driver and the operation of the data driver, respectively.

[0306] The scan driver can receive a scan control signal from the timing controller. The scan driver can activate input of any one of a plurality of rows on the display panel (20) according to the scan control signal. In other words, the scan driver can convert pixels included in any one of a plurality of pixels arranged in a plurality of rows and a plurality of columns into a state capable of receiving an analog image signal. At this time, pixels other than the pixels whose input is activated by the scan driver may not be able to receive an analog image signal.

[0307] The data driver can receive image data and a data control signal from the timing controller. The data driver can output the image data to the display panel (20) according to the data control signal. For example, the data driver can receive digital image data from the timing controller. The data driver can convert the digital image data into an analog image signal. In addition, the data driver can provide an analog image signal to pixels included in a row that has been input-activated by the scan driver. At this time, the pixels whose input has been activated by the scan driver can receive the analog image signal. The optical properties (e.g., light transmittance) of the pixels whose input has been activated change according to the received analog image signal.

[0308] In this way, the panel driver (30) can drive the display panel (20) according to the image data. As a result, an image corresponding to the image data can be displayed on the display panel (20).

[0309] In one embodiment, the dimming data may include information regarding the intensity of light emitted by each of the plurality of light sources (1100) (or the plurality of dimming blocks (200)) included in the light source device (1000). The dimming data may be provided to the light source device (1000) via the dimming driver (170).

[0310] The image processing unit (90) can provide dimming data for local dimming to the light source device (1000). The dimming data can include information regarding the brightness of each of the plurality of dimming blocks (200). For example, the dimming data can include information regarding the intensity of light output by the light sources included in each of the plurality of dimming blocks (200).

[0311] The image processing unit (90) can obtain dimming data from image data.

[0312] The image processing unit (90) can convert image data into dimming data in various ways. For example, the image processing unit (90) can divide the image (I) by the image data into a plurality of image blocks. The number of the plurality of image blocks is equal to the number of the plurality of dimming blocks (200), and each of the plurality of image blocks can correspond to a plurality of dimming blocks (200).

[0313] The image processing unit (90) can obtain the luminance values ​​of a plurality of dimming blocks (200) from the image data of a plurality of image blocks. In addition, the image processing unit (90) can generate dimming data by combining the luminance values ​​of a plurality of dimming blocks (200).

[0314] For example, the image processing unit (90) can obtain the luminance value of each of the plurality of dimming blocks (200) based on the maximum value among the luminance values ​​of the pixels included in each of the image blocks.

[0315] One image block includes a plurality of pixels, and the image data of one image block may include image data of a plurality of pixels (e.g., red data, green data, blue data, etc.). The image processing unit (90) may calculate the luminance value of each pixel based on the image data of each pixel.

[0316] The image processing unit (90) can set the maximum value among the luminance values ​​of each pixel included in the image block as the luminance value of the dimming block (200) corresponding to the image block. For example, the image processing unit (90) can set the maximum value among the luminance values ​​of the pixels included in the ith image block as the luminance value of the ith dimming block, and can set the maximum value among the luminance values ​​of the pixels included in the jth image block as the luminance value of the jth dimming block.

[0317] The image processing unit (90) can generate dimming data by combining the luminance values ​​of a plurality of dimming blocks (200).

[0318] The dimming driver (170) can receive dimming data from the image processing unit (90). The dimming driver (170) can drive the light source device (1000) according to the dimming data. Here, the dimming data can include information about the brightness of each of the plurality of dimming blocks (200) or information about the brightness of the light sources included in each of the plurality of dimming blocks (200).

[0319] The dimming driver (170) may include, for example, a timing controller, a data driver, a scan driver, etc.

[0320] The dimming driver (170) can convert dimming data, which is a digital voltage signal, into an analog driving current.

[0321] The dimming driver (170) can sequentially provide an analog dimming signal to the driving elements (1400) corresponding to each dimming block (200), for example, in an active matrix manner.

[0322] A plurality of dimming blocks (200) can be divided into a plurality of groups. For example, three dimming blocks (200) can form one group. Dimming blocks (200) belonging to the same group can be supplied with driving current simultaneously, and dimming blocks (200) belonging to different groups can be supplied with driving current sequentially at different times. The dimming driver (170) can activate a dimming block (200) belonging to any one of the plurality of groups and provide an analog dimming signal to the activated dimming blocks (200). Thereafter, the dimming driver (170) can activate dimming blocks (200) belonging to another group and provide an analog dimming signal to the activated dimming blocks (200).

[0323] The dimming driver (170) can activate dimming blocks (200) belonging to one group and provide an analog dimming signal to the activated dimming blocks (200). Thereafter, the dimming driver (170) can activate inputs of dimming blocks (200) belonging to another row and provide an analog dimming signal to the dimming blocks (200) whose inputs are activated.

[0324] To activate dimming blocks (200) belonging to any one of the plurality of groups, the dimming driver (170) can transmit a driving signal to the driving element (1400). The driving signal may be a signal for supplying power to the driving element (1400).

[0325] According to various embodiments, the driving signal may be transmitted directly from the dimming driver (170) to each of the plurality of dimming blocks (200), or may be transmitted from the driving element (300) to each of the plurality of dimming blocks (200).

[0326] The driving circuit of each of the dimming blocks (200) can provide an analog driving current corresponding to an analog dimming signal to the light source device (1000). By the analog driving current, the light sources (1100) included in the light source device (1000) can emit light. Depending on the dimming data, the light sources belonging to the same dimming block (200) can emit light of the same intensity. Additionally, depending on the dimming data, the light sources belonging to different dimming blocks (200) can emit light of different intensities.

[0327] FIG. 10 is a diagram illustrating an example of a connection structure of a dimming driver, a driving element, and a dimming block of a display device according to one embodiment of the present disclosure.

[0328] Referring to FIG. 10, each of the plurality of dimming blocks (200) may include a plurality of light sources (LEDs) (1100) connected in series with each other.

[0329] For example, each of the plurality of dimming blocks (200) is supplied with a driving voltage (V) through a power wire (400). LED ) can be supplied.

[0330] For example, each of the plurality of dimming blocks (200) can be electrically connected to a driving element (1400). The driving element (1400) can control the driving current flowing to each of the plurality of dimming blocks (200).

[0331] Assuming that one dimming block (200) includes a first light-emitting diode, a second light-emitting diode, a third light-emitting diode, and a fourth light-emitting diode, the anode of the first light-emitting diode can be connected to a power wiring, the cathode of the first light-emitting diode can be connected to an anode of the second light-emitting diode, the cathode of the second light-emitting diode can be connected to an anode of the third light-emitting diode, the cathode of the third light-emitting diode can be connected to an anode of the fourth light-emitting diode, and the cathode of the fourth light-emitting diode can be connected to a driving element (1400).

[0332] In one embodiment, among the plurality of light sources (1100) connected in series and included in one dimming block (200), the first light source (1100) in the series connection is connected to the power wiring (400) and is supplied with a driving voltage (V LED ) can be authorized, and the last light source (1100) of the serial connection can be connected to the driving element (1400).

[0333] In another embodiment, among the plurality of light sources (1100) connected in series and included in one dimming block (200), the first light source (1100) in the series connection is connected to a driving element (1400) and a driving voltage (V LED ) can be authorized, and the last light source (1100) of the serial connection can be connected to the driving element (1400).

[0334] The driving element (1400) can receive an analog dimming signal from the dimming driver (170) while the dimming driver (170) is input-activated and store the received analog dimming signal. In addition, while the input-deactivated, the plurality of driving elements (1400) can supply a driving current corresponding to the stored analog dimming signal to the plurality of light sources (light-emitting diodes) (1100).

[0335] The driving element (1400) supplies a driving voltage (V) to a plurality of dimming blocks (200). LED ) is enabled, the driving current supplied to each of the plurality of dimming blocks (200) can be controlled.

[0336] To this end, the display device (1) may include a data line (D) that provides an analog dimming signal to a plurality of driving elements (1400), a scan line (S) that provides a scan signal to a plurality of driving elements (1400), and / or a clock line (CLK) that provides a clock signal, which is a timing signal, to a plurality of driving elements (1400).

[0337] Additionally, the display device (1) may include power wiring (400) for providing a driving voltage to a plurality of driving elements (1400).

[0338] Data lines (D), scan lines (S), and power wiring (400) can be formed on the substrate (1200).

[0339] The plurality of driving elements (1400) may include circuits of various topologies to implement active matrix driving.

[0340] For example, each of the plurality of driving elements (1400) may include a circuit of a 1C2T (one capacitor two transistor) topology. However, the circuit structure of the driving element (1400) is not limited thereto. For example, the driving element (1400) may include a circuit of a 3T1C topology with an additional transistor for compensating the body effect of the driving transistor.

[0341] The driving element (1400) may be provided as a single chip with an integrated driving circuit, for example. In other words, the driving circuit may be integrated into a single semiconductor chip.

[0342] The dimming driver (170) can transmit a data signal, which is a dimming signal corresponding to an input image, to a plurality of driving elements (1400) through a data line (D).

[0343] Additionally, the dimming driver (170) can transmit scan signals to multiple driving elements (1400) through scan lines (S).

[0344] In addition, the dimming driver (170) can transmit a clock signal corresponding to the light-emitting timing of the plurality of dimming blocks (200) to the plurality of driving elements (1400) through the clock line (CLK).

[0345] A plurality of driving elements (300) can control the driving current supplied to each of a plurality of dimming blocks (200) based on a data signal, a scan signal, and / or a clock signal.

[0346] In Fig. 10, only some of the plurality of dimming blocks (200) are illustrated. A display device (1) according to one embodiment of the present disclosure requires more dimming blocks (200), driving elements (300), data lines (D) connecting them, scan lines (S), and power lines (400) for local dimming.

[0347] In one embodiment, the wiring may include a data line (D), a scan line (S), a power wiring (400), a wiring (410) connecting a plurality of light sources within a plurality of dimming blocks (200), a wiring (420) connecting a driving element (1400) and a plurality of dimming blocks (200), etc., but the types of wiring are not limited thereto.

[0348] FIG. 11 is a diagram illustrating an example of a connection structure between a driving element and a dimming block of a light source device of a display device according to an embodiment of the present disclosure. FIG. 12 is a diagram illustrating an example of a circuit board wiring of a light source device of a display device according to an embodiment of the present disclosure.

[0349] Referring to FIGS. 11 and 12, one driving element (1400) can drive multiple dimming blocks, such as 6 channels or 8 channels. As the distance between the driving element (1400) and the LEDs (1110, 1120) in the dimming block (200) driven by the driving element (1400) increases, the length of the connection wires (400, 410, 420) increases, which may cause noise.

[0350] Conventional flat PCBs are relatively free from this noise because the distance between the driving element and the LED is relatively close. To offset this noise, simply shorten the distance between the driving element and the LED, as before.

[0351] However, the light source device (1000) of the display device (1) according to one embodiment of the present disclosure includes a substrate (1200) of a wavy finger PCB, and the driving element (1400) is provided only on the substrate body (1210) of the substrate (1200), so that the distance between the driving element (1400) and the LEDs (1110, 1120) is relatively far. Therefore, when at least one LED (1110, 1120) located far from the driving element (1400) is driven by one dimming block, the length of the connection wires (400, 410, 420) increases, the resistance value also increases, and the device may be greatly affected by various external noises. As a result, noise such as flicker may be generated.

[0352] A light source device (1000) of a display device (1) according to one embodiment of the present disclosure may include a ground wire (500) that cancels out noise of a connecting wire (400, 410, 420) that electrically connects a driving element (1400) and a plurality of dimming blocks (200).

[0353] The ground wiring (500) can offset noise of the dimming block (200) that is the farthest from the driving element (1400) among the plurality of dimming blocks (200).

[0354] The ground wire (500) may be placed adjacent to the connection wire (400, 410, 420). The ground wire (500) may be placed apart from the connection wire (400, 410, 420).

[0355] There may be multiple ground wires (500).

[0356] The ground wire (500) can be placed on both sides of the connection wire (400, 410, 420).

[0357] For example, by placing the ground wire (500) on both sides of the connection wire (400, 410, 420), noise caused by electromagnetic induction introduced into the connection wire (400, 410, 420) can be offset.

[0358] The ground wire (500) can be placed on at least one side of the power wire (400), which is a connecting wire (400, 410, 420), the wire (410) connecting the plurality of light sources within the plurality of dimming blocks (200), and the wire (420) connecting the driving element (1400) and the plurality of dimming blocks (200).

[0359] In this way, the noise of the plurality of dimming blocks (200) can be canceled regardless of the distance between the driving element (1400) and the plurality of dimming blocks (200).

[0360] FIG. 13 is a diagram illustrating an example of controlling current of a plurality of dimming blocks based on a distance between a driving element of a light source device of a display device and a plurality of dimming blocks according to one embodiment of the present disclosure.

[0361] Referring to Fig. 13, if the length of the connecting wires (400, 410, 420) is long, current loss may occur due to increased resistance. This may result in a difference in brightness between the LEDs close to the driving element (1400) and the LEDs farther away. To prevent this, the current of the farther LEDs may be increased compared to the closer LEDs, thereby enabling the LEDs to produce the same brightness.

[0362] The driving element (1400) can control the current of the plurality of dimming blocks (200) based on the distance between the driving element (1400) and the plurality of dimming blocks (200).

[0363] The driving element (1400) can increase the current of a dimming block that is further away from the driving element (1400) than a dimming block that is closer to the driving element (1400) than to the dimming block that is closer to the driving element (1400).

[0364] For example, if among the plurality of dimming blocks (200), the order of distance from the driving element (1400) is the first dimming block (200A), the second dimming block (200B), ... the Nth dimming block (200N), the driving current In of the Nth dimming block (200N) can be increased so that the driving current In of the Nth dimming block (200N) is higher than the driving current I1 of the first dimming block (200A).

[0365] Meanwhile, if the current of individual LEDs within the same dimming block can be controlled, the driving current of LEDs that are further away from each other within the same dimming block can be increased more than that of LEDs that are closer to each other.

[0366] In this way, the plurality of dimming blocks (200) can be implemented to have the same brightness regardless of the distance between the driving element (1400) and the plurality of dimming blocks (200).

[0367] When local dimming is implemented in the above manner, the multiple dimming blocks (200) can produce the same brightness without noise regardless of the distance between the driving element (1400) and the multiple dimming blocks (200).

[0368] A display device (1) according to one embodiment of the present disclosure comprises: an image display unit (20); and a light source device (1000); wherein the light source device (1000) comprises: a substrate (1200) including a substrate body (1210) extending along a first direction (Z), and a plurality of substrate bars (1220) extending from the substrate body (1210) in a second direction (Y) and arranged to be spaced apart from each other along the first direction (Z); a plurality of light sources (1100) including a plurality of first light sources provided in the substrate body (1210) and a plurality of second light sources provided in the plurality of substrate bars (1220), the plurality of light sources being arranged to irradiate light toward the image display unit (20); and at least one dimming block (200) including at least one light source among the plurality of light sources (1100). And a driving element (1400) provided only in the substrate body (1210) among the substrate body (1210) and the plurality of substrate bars (1220) and driving the at least one dimming block; wherein the at least one dimming block (200) may include at least one of a first dimming block (210) including only the first light source, a second dimming block (220) including only the second light source, and a third dimming block (230) including the first light source and the second light source.

[0369] The above driving element (1400) includes a plurality of driving elements (1400), and the plurality of driving elements (1400) are arranged so that their positions in the first direction (Z) are different from each other, and some of the driving elements (1400) among the plurality of driving elements (1400) can be arranged so that their positions in the second direction (Y) are different from those of other driving elements (1400) among the plurality of driving elements (1400).

[0370] The plurality of driving elements (1400) include a first row of driving elements (1400) arranged along the first direction (Z), and a second row of driving elements (1400) arranged along the first direction (Z) and spaced apart from the driving elements (1400) of the first row, and each driving element (1400) included in the driving elements (1400) of the first row and each driving element (1400) included in the driving elements (1400) of the second row can be arranged so that their positions in the second direction (Y) are spaced apart from each other.

[0371] The above at least one dimming block (200) includes a plurality of dimming blocks (200),

[0372] The above substrate (1200) may further include a ground wire (500) that offsets noise of one or more of the plurality of dimming blocks (200).

[0373] The above ground wiring (500) can be placed adjacent to the connection wiring (400, 410, 420) that electrically connects the driving element (1400) and the plurality of dimming blocks.

[0374] The above ground wiring (500) includes a plurality of ground wirings (500), and the plurality of ground wirings (500) can be arranged on both sides of the connection wiring (400, 410, 420).

[0375] The above ground wiring (500) can offset noise of the dimming block that is the farthest from the driving element (1400) among the plurality of dimming blocks.

[0376] The at least one dimming block (200) includes a plurality of dimming blocks (200), and light sources belonging to the same dimming block are supplied with the same current, and the driving element (1400) can control the current of the plurality of dimming blocks (200) based on the distance between the driving element (1400) and the plurality of dimming blocks (200).

[0377] The above driving element (1400) can increase the current of a dimming block that is further away than a dimming block that is closer to the distance.

[0378] The above at least one dimming block (200) includes a plurality of dimming blocks (200),

[0379] The above plurality of dimming blocks (200) may include the second dimming block (220) and the third dimming block (230).

[0380] Each of the plurality of substrate bars (1220) includes a central extension portion (1221) extending in a second direction (Y) different from the first direction (Z); a plurality of first protrusions (1222a) each protruding from one side of the central extension portion (1221) in the first direction (Z) toward the outside of the central extension portion (1221) and arranged along the second direction (Y) so that some of the plurality of light sources (1100) are mounted; a plurality of first recessed portions (1223a) each formed between a pair of adjacent first protrusions (1222a) among the plurality of first protrusions (1222a); A plurality of second protrusions (1222b), each of which protrudes from the other side of the central extension (1221) in the first direction (Z) toward the outside of the central extension (1221), and are arranged along the second direction (Y) with respect to each other, and on which another part of the plurality of light sources (1100) is mounted; and a plurality of second recessed portions (1223b), each of which is formed between a pair of second protrusions (1222b) that are adjacent to each other among the plurality of second protrusions (1222b); wherein the shape of an edge of each of the plurality of first recessed portions (1223a) is different from the shape of an edge of each of the plurality of second protrusions (1223b), and the shape of an edge of each of the plurality of second recessed portions (1223b) may be different from the shape of an edge of each of the plurality of first protrusions (1222a).

[0381] According to one embodiment of the present disclosure, a light source device (1000) comprises: a substrate including a substrate body (1210) extending along a first direction (Z), and a plurality of substrate bars (1220) extending from the substrate body (1210) in a second direction (Y) and arranged to be spaced apart from each other along the first direction (Z); a plurality of light sources (1100) including a plurality of first light sources provided in the substrate body (1210) and a plurality of second light sources provided in the plurality of substrate bars (1220), and arranged to irradiate light toward an image display unit (20); at least one dimming block including at least one light source among the plurality of light sources (1100); and a driving element (1400) provided only in the substrate body (1210) among the substrate body (1210) and the plurality of substrate bars (1220), and driving the at least one dimming block. , and the at least one dimming block (200) may include at least one of a first dimming block (210) including only the first light source, a second dimming block (220) including only the second light source, and a third dimming block (230) including the first light source and the second light source.

[0382] The above driving element (1400) includes a plurality of driving elements (1400), and the plurality of driving elements (1400) include a first row of driving elements (1400) arranged along the first direction (Z), and a second row of driving elements (1400) arranged along the first direction (Z) and spaced apart from the driving elements (1400) of the first row, and each of the driving elements (1400) included in the driving elements (1400) of the first row and each of the driving elements (1400) included in the driving elements (1400) of the second row can be arranged so that their positions in the second direction (Y) are spaced apart from each other.

[0383] The at least one dimming block (200) may include a plurality of dimming blocks (200), and may further include a ground wire (500) provided on the substrate (1200) to cancel out noise of at least one dimming block (200) among the plurality of dimming blocks (200).

[0384] The above ground wiring (500) can be placed adjacent to the connection wiring (400, 410, 420) that electrically connects the driving element (1400) and the plurality of dimming blocks (200).

[0385] The above ground wiring (500) includes a plurality of ground wirings (500), and the plurality of ground wirings (500) can be arranged on both sides of the connection wiring (400, 410, 420).

[0386] The above ground wiring (500) can offset noise of the dimming block that is the farthest from the driving element (1400) among the plurality of dimming blocks (200).

[0387] The at least one dimming block (200) includes a plurality of dimming blocks (200), and light sources belonging to the same dimming block are supplied with the same current, and the driving element (1400) can control the current of the plurality of dimming blocks (200) based on the distance between the driving element (1400) and the plurality of dimming blocks (200).

[0388] The above driving element (1400) can increase the current of the dimming block with the farthest distance than the dimming block with the closest distance.

[0389] The at least one dimming block (200) may include a plurality of dimming blocks (200), and the plurality of dimming blocks (200) may include the second dimming block (220) and the third dimming block (230).

[0390] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0391] Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0392] Additionally, a computer-readable recording medium may be provided in the form of a non-transitory storage medium. Here, the term "non-transitory storage medium" simply means a tangible device that does not contain signals (e.g., electromagnetic waves). This term does not distinguish between cases where data is permanently stored in the storage medium and cases where data is temporarily stored. For example, a "non-transitory storage medium" may include a buffer in which data is temporarily stored.

[0393] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable recording medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily generated on a machine-readable recording medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0394] The disclosed embodiments have been described with reference to the attached drawings as described above. Those skilled in the art will understand that the present invention can be implemented in forms other than the disclosed embodiments without altering the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

Claims

1. Video display unit; and including a light source device; The above light source device is, A substrate comprising a substrate body extending along a first direction, and a plurality of substrate bars extending from the substrate body in a second direction and arranged to be spaced apart from each other along the first direction; A plurality of light sources including a plurality of first light sources provided on the substrate body and a plurality of second light sources provided on the plurality of substrate bars, and arranged to irradiate light toward the image display unit; At least one dimming block including at least one light source among the plurality of light sources; and A driving element provided only on the substrate body among the substrate body and the plurality of substrate bars, and driving the at least one dimming block; A display device wherein the at least one dimming block includes at least one of a first dimming block including only the first light source, a second dimming block including only the second light source, and a third dimming block including the first light source and the second light source.

2. In paragraph 1, The above driving element includes a plurality of driving elements, A display device in which the plurality of driving elements are arranged so that their positions in the first direction are different from each other, and some of the plurality of driving elements are arranged so that their positions in the second direction are different from those of other portions of the plurality of driving elements.

3. In paragraph 2, The above plurality of driving elements are, A first row of driving elements arranged along the first direction, It includes a second row of driving elements spaced apart from the driving elements of the first row and arranged along the first direction, A display device in which 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.

4. In paragraph 1, wherein said at least one dimming block comprises a plurality of dimming blocks, A display device further comprising a ground wire provided on the substrate to offset noise of at least one dimming block among the plurality of dimming blocks.

5. In paragraph 4, A display device in which the above ground wiring is arranged adjacent to the connecting wiring that electrically connects the driving element and the plurality of dimming blocks.

6. In paragraph 5, The above ground wiring includes a plurality of ground wirings, A display device in which the above plurality of ground wires are arranged on both sides of the above connection wires.

7. In paragraph 4, The above ground wiring is a display device that cancels out noise of the dimming block that is the farthest from the driving element among the plurality of dimming blocks.

8. In paragraph 1, The at least one dimming block includes a plurality of dimming blocks, and light sources belonging to the same dimming block are supplied with the same current, A display device in which the driving element controls the current of the plurality of dimming blocks based on the distance between the driving element and the plurality of dimming blocks.

9. In paragraph 8, A display device in which the driving element increases the current of a dimming block that is farther away than a dimming block that is closer to the display device.

10. In paragraph 1, wherein said at least one dimming block comprises a plurality of dimming blocks, A display device wherein the plurality of dimming blocks include the second dimming block and the third dimming block.

11. In paragraph 1, Each of the above plurality of substrate bars, A central extension extending in a second direction different from the first direction; A plurality of first protrusions each protruding from one side of the central extension in the first direction toward the outside of the central extension, arranged along the second direction, and on which some of the plurality of light sources are mounted; A plurality of first recessed portions each formed between a pair of adjacent first protrusions among the plurality of first protrusions; A plurality of second protrusions each protruding from the other side of the central extension in the first direction toward the outside of the central extension, arranged along the second direction, and on which another part of the plurality of light sources is mounted; and Each of the plurality of second recessed portions includes a plurality of second protrusions formed between a pair of adjacent second protrusions among the plurality of second protrusions; The shape of the edge of each of the plurality of first recessed portions is different from the shape of the edge of each of the plurality of second protrusions, A display device in which the shape of each edge of the plurality of second recessed portions is different from the shape of each edge of the plurality of first protrusions.

12. A substrate including a substrate body extending along a first direction, and a plurality of substrate bars extending from the substrate body in a second direction and arranged to be spaced apart from each other along the first direction; A plurality of light sources including a plurality of first light sources provided on the substrate body and a plurality of second light sources provided on the plurality of substrate bars, and arranged to irradiate light toward the image display unit; At least one dimming block including at least one light source among the plurality of light sources; and A driving element provided only on the substrate body among the substrate body and the plurality of substrate bars, and driving the at least one dimming block; A light source device in which the at least one dimming block includes at least one of a first dimming block including only the first light source, a second dimming block including only the second light source, and a third dimming block including the first light source and the second light source.

13. In paragraph 12, The above driving element includes a plurality of driving elements, The above plurality of driving elements are, A first row of driving elements arranged along the first direction, It includes a second row of driving elements spaced apart from the driving elements of the first row and arranged along the first direction, A light source device in which 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 are arranged so that their positions in the second direction are spaced apart from each other.

14. In paragraph 12, wherein said at least one dimming block comprises a plurality of dimming blocks, A light source device further comprising a ground wiring provided on the substrate to offset noise of at least one dimming block among the plurality of dimming blocks.

15. In paragraph 14, A light source device in which the above ground wiring is placed adjacent to the connecting wiring that electrically connects the driving element and the plurality of dimming blocks.

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