KR20250114867A - Display apparatus and light source apparatus thereof - Google Patents

Abstract

A display device includes an image display panel and a light source device, and the light source device includes 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 provided on the substrate body and the plurality of substrate bars and arranged to irradiate light toward an image display section, a plurality of dimming blocks including at least one light source among the plurality of light sources, a plurality of driving elements provided only on the substrate body among the substrate body and the plurality of substrate bars and driving the plurality of dimming blocks, and a signal line formed on the substrate body and connected to the plurality of driving elements, wherein the signal lines include a data line for transmitting a data signal to the plurality of driving elements, a scan line for transmitting a scan signal to the plurality of driving elements, and a power line for supplying power to the plurality of driving elements.

Description

Display apparatus and light source apparatus thereof {DISPLAY APPARATUS AND LIGHT SOURCE APPARATUS THEREOF}

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

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.

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.

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.

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

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.

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

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.

According to one aspect of the disclosed invention, a display device and a light source device thereof can be provided, which can simplify input wiring by disposing input wiring formed on a substrate having an improved structure that can reduce the cost of the product and manufacturing cost in a wide space.

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.

According to one embodiment of the present disclosure, a display device includes an image display unit; and a light source device; wherein the light source device includes 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 provided on the substrate body and the plurality of substrate bars and arranged to irradiate light toward the image display unit; a plurality of dimming blocks including at least one light source among the plurality of light sources; a plurality of driving elements provided only on the substrate body among the substrate body and the plurality of substrate bars and driving the plurality of dimming blocks; and signal lines formed on the substrate body and connected to the plurality of driving elements; wherein the signal lines may include a data line for transmitting a data signal to the plurality of driving elements, a scan line for transmitting a scan signal to the plurality of driving elements, and a power line for supplying power to the plurality of driving elements.

A light source device according to one embodiment of the present disclosure includes 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 provided on the substrate body and the plurality of substrate bars; a plurality of dimming blocks including at least one light source among the plurality of light sources; a plurality of driving elements provided only on the substrate body among the substrate body and the plurality of substrate bars and driving the plurality of dimming blocks; and a signal line formed on the substrate body and connected to the plurality of driving elements; wherein the signal lines may include a data line for transmitting a data signal to the plurality of driving elements, a scan line for transmitting a scan signal to the plurality of driving elements, and a power line for supplying power to the plurality of driving elements.

FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.
FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.
FIG. 3 is a cross-sectional view illustrating a display panel of a display device according to one embodiment of the present disclosure.
FIG. 4 is an enlarged view of a light source and a reflective sheet of a display device according to one embodiment of the present disclosure.
FIG. 5 is a drawing illustrating a substrate and bottom chassis of a display device according to one embodiment of the present disclosure.
FIG. 6 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.
FIG. 7 is an enlarged view of a portion of a substrate of a display device according to one embodiment of the present disclosure.
FIG. 8 is an enlarged view of a portion of a substrate of a display device according to one embodiment of the present disclosure, showing the sizes of protrusions and recessed areas.
FIG. 9 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.
FIG. 10 is an enlarged view of a portion of another example of a light source device of a display device according to one embodiment of the present disclosure.
FIG. 11 is a diagram illustrating signal lines of wiring connected to driving elements of an example of a light source device of a display device according to one embodiment of the present disclosure.
FIG. 12 is a diagram illustrating control lines of wiring connected to driving elements of an example of a light source device of a display device according to one embodiment of the present disclosure.
FIG. 13 is a diagram illustrating signal lines connected to driving elements of another example of a light source device of a display device according to one embodiment of the present disclosure.
FIG. 14 is a drawing showing the wiring width of a control line connected to driving elements of a light source device of a display device according to one embodiment of the present disclosure.
FIG. 15 is a control block diagram of a display device according to one embodiment of the present disclosure.
FIG. 16 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.
FIG. 17 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.
FIG. 18 is a drawing illustrating an example of a connection structure of driving elements and dimming blocks of a display device according to another embodiment of the present disclosure.
Fig. 19 is a simplified drawing of the connection structure of the driving elements and dimming blocks illustrated in Fig. 18.
FIG. 20 is a drawing illustrating an example of a connection structure of driving elements and dimming blocks of a display device according to another embodiment of the present disclosure.
Fig. 21 is a simplified drawing of the connection structure of the driving elements and dimming blocks illustrated in Fig. 20.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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

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.

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.

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.

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.

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.

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

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.

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).

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.

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.

Each of the plurality of pixels (P) can emit light of various brightness and various colors. Specifically, each of the plurality of pixels (P) can include sub-pixels (P _R , P _G , P _B ), and the sub-pixels (P _R , P _G , P _B ) can include a red sub-pixel (P _R ) that can emit red light, a green sub-pixel (P _G ) that can emit green light, and a blue sub-pixel (P _B ) that can emit blue light. For example, the red light can represent light with a wavelength of approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, the green light can represent light with a wavelength of approximately 495 nm to 570 nm, and the blue light can represent light with a wavelength of approximately 450 nm to 495 nm.

Each of the plurality of pixels (P) can emit light of various brightness and colors by combining the light emitted from the red sub-pixel (P _R ), the green sub-pixel (P _G ), and the blue sub-pixel ₍ P B ), respectively.

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

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.

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).

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.

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.

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).

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.

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.

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).

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).

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

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.

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.

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.

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

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

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.

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).

For example, the light source device (1000) (specifically, the light source (1100) of the light source device (1000), see FIG. 4) 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).

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.

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.

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.

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).

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).

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).

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.

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).

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).

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.

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).

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).

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.

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).

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.).

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.

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.

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

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).

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).

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).

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.

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).

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).

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

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 ), the area where the green filter (27G) is formed may correspond to the green sub-pixel (P _G ), and the area where the blue filter (27B) is formed may correspond to the blue sub-pixel (P _B ).

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).

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.

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).

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).

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.

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).

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).

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).

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.

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

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

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

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

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

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

According to various embodiments, the substrate (1200) may include a multi-layer printed circuit board (Multi-Layer PCB) including multiple layers.

According to various embodiments, the substrate (1200) may be a single-sided printed circuit board comprising one layer.

Various types of signal lines (wiring) for controlling the light source (1100) can be formed on the substrate (1200).

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

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

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

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

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

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

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

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

For example, the light emitting diode (1101) may be directly attached to the substrate (1200) in a chip-on-board (COB) manner. In other words, the light source (1100) may include a light emitting diode (1101) in which a light emitting diode chip or light emitting diode die is directly attached to the substrate (1200) without separate packaging.

The light source device (1000) can be miniaturized as the light source (1100) is manufactured by attaching a flip-chip type light-emitting diode (1101) to a substrate (1200) in a chip-on-board manner.

The substrate (1200) may include power wiring (1230) for supplying power to the light source (1100). The power wiring (1230) may be configured to supply electrical signals and/or power from the control assembly (50) and/or the power assembly (60) to the light source (1100). As an example, the power wiring (1230) may be configured to supply power to a flip-chip type light-emitting diode (1101).

For example, the substrate (1200) may be formed by alternately stacking a non-conductive insulation layer and a conductive conduction layer.

A conductive layer of the substrate (1200) may be formed with lines or patterns through which power and/or electrical signals pass. The conductive layer may be composed of various materials having electrical conductivity. For example, the conductive layer may be composed of various metal materials such as copper (Cu), tin (Sn), aluminum (Al), or alloys thereof.

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

For example, a protection layer may be provided on the outer surface of the substrate (1200) to prevent or suppress damage to the substrate (1200) due to external impact, damage due to chemical action (e.g., corrosion, etc.), and/or damage due to optical action. For example, the protection layer of the substrate (1200) may include a photo solder resist (PSR).

The power wiring (1230) can be covered by a protective layer of the substrate (1200) to prevent it from being exposed to the outside.

For example, the substrate (1200) may include a power pad (1240) electrically connected to a power wiring (1230) to supply power to a flip-chip type light-emitting diode (1101). The power wiring (1230) may be electrically connected to the light-emitting diode (1101) via the power pad (1240).

For example, a window may be formed in the protective layer of the substrate (1230) to allow a portion of the power wiring (1230) to be exposed to the outside. The power pad (1240) may be electrically connected to a portion of the power wiring (1230) exposed to the outside of the substrate (1200).

For example, various conductive adhesive materials having electrical conductivity, such as solder or electrically conductive epoxy adhesives, may be applied between the electrode of the light-emitting diode (1101) and the power pad (1240).

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

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

The optical dome (1102) may be composed of silicone or epoxy resin. For example, molten silicone or epoxy resin may be ejected onto the light-emitting diode (1101) through a nozzle or the like, and the ejected silicone or epoxy resin may then be hardened to form the optical dome (1102).

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

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

The structure of the light source device (1000), such as the light source (1100) and the substrate (1200), described above with reference to FIG. 4 is only an example of the structure that the light source device 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.

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

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

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).

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.

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.

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.

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.

Although FIG. 5 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. 5. 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. 5. Alternatively, for example, the display device (1) may include only one integrally formed light source device (1000).

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).

FIG. 6 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.

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

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.

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).

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

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.

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).

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).

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).

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.

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.

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.

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.

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.

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.

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

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

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).

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).

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).

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).

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).

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

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).

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.

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. 6 is only an example, and the idea of the present disclosure is not limited thereto.

In FIG. 6, an embodiment is illustrated in which each of the plurality of substrate bars (1220) extends in the right direction (+Y direction) from the substrate body (1210), but the present invention is not limited thereto, and for example, the plurality of substrate bars (1220) may extend in the left direction (-Y direction) from the substrate body (1210).

In addition, although FIG. 6 illustrates an embodiment in which the substrate body (1210) extends in the vertical direction (Z direction) of the display device (1), the present invention is not limited thereto, and for example, the substrate body (1210) may extend in the horizontal direction (Y direction).

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

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).

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).

FIG. 7 is an enlarged view of a portion of a substrate of a display device according to one embodiment of the present disclosure. FIG. 8 is an enlarged view of a portion of a substrate of a display device according to one embodiment of the present disclosure, showing the sizes of protrusions and recessed areas.

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

Referring to FIGS. 7 and 8, a substrate bar (1220) of a display device (1) according to one embodiment of the present disclosure may include a central extension portion (1221) extending in one direction, and protrusions (1222a, 1222b) protruding from the central extension portion (1221). The central extension portion (1221) and the protrusions (1222a, 1222b) may each be a portion of the substrate bar (1220) and may constitute a portion of the substrate (1200).

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).

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).

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

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).

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

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.

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

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.

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.

A plurality of first side light sources (1110) may be arranged at positions spaced apart from the central extension (1221) in the first direction (Z direction). As illustrated in FIGS. 7 and 8, the plurality of first side light sources (1110) may be arranged to be deflected upward from the central extension (1221).

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.

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

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).

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).

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

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.

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

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.

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.

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.

A plurality of second side light sources (1120) may be arranged at positions spaced apart from the central extension (1221) in the first direction (Z direction). As illustrated in FIGS. 7 and 8, the plurality of second side light sources (1120) may be arranged to be deflected downward from the central extension (1221).

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.

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

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).

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.

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.

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).

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).

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).

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.

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

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

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.

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).

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).

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.

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

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

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).

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).

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).

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

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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).

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.

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

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. In other words, a third point (Pb) on the edge spaced apart by a predetermined distance in the second direction (Y) from the outer end (1222bb) that is most protruding in the first direction (Z) of each of the plurality of second protrusions (1222b), and a fourth point (Pc) on the edge spaced apart by the same distance in the second direction (Y) from the inner end (1223aa) that is most adjacent to the central extension (1221) in the first direction (Z) of each of the plurality of first recessed portions (1223a) can be defined. Here, the curvature (radius of curvature r1) at the third point (Pb) and the curvature (radius of curvature r4) at the fourth point (Pc) can be different from each other.

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

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

According to the embodiments illustrated in FIGS. 7 and 8, the shape of each edge of the plurality of first protrusions (1222a) and the shape of each edge of the plurality of second protrusions (1222b) may correspond to each other. In other words, the shape of 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.

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

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

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.

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).

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

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

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).

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

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

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).

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

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

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).

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

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

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).

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.

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.

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).

Meanwhile, FIGS. 7 and 8 illustrate 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.

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

In addition, as illustrated in FIG. 8, a second recessed area (1223a2) may be defined by one second recessed area (1223b) among the plurality of second recessed areas (1223b) and a pair of second protrusions (1222b) adjacent to the second recessed area (1223b). Specifically, the second recessed area (1223a2) may be defined by a line connecting one second recessed area (1223b) among the plurality of second recessed areas (1223b) and an outer end (1222bb) of each of the pair of second protrusions (1222b) adjacent thereto.

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

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

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

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

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

That is, the size of each protrusion (1222a, 1222b) provided on the substrate bar (1220) and the size of each recess (1223a, 1223b) may be different from each other. For example, the size of each protrusion (1222a, 1222b) provided on the substrate bar (1220) may be smaller than the size of each recess (1223a, 1223b).

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

FIG. 9 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.

Referring to FIG. 9, a display device (1) according to one embodiment of the present disclosure may include a substrate body (1210) connected to a plurality of substrate bars (1220).

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

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.

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.

Some of the plurality of body light sources (1130) may be arranged in parallel with the plurality of light sources (i.e., the first side light sources (1110)) mounted on the plurality of first protrusions (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 side light sources (1110) may be arranged at equal intervals from each other along the second direction (Z).

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 side light sources (1120)) mounted on the plurality of second protrusions (1222b) provided on one of the plurality of substrate bars (1220) along the second direction (Z). In this case, the body light sources (1130) and the second side light sources (1120) may be arranged at equal intervals from each other along the second direction (Z).

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).

The display device (1) 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).

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

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).

For example, as illustrated in FIG. 9, a plurality of driving elements (1400-1) 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).

A plurality of driving elements (1400-1) may be mounted on the front surface (1210F) of the substrate body (1210). At this time, as illustrated in FIG. 9, the plurality of driving elements (1400-1) may be arranged along one direction on the front surface (1210F) of the substrate body (1210). For example, the plurality of driving elements (1400-1) may be arranged spaced apart from each other along the first direction (Z) on the front surface (1210F) of the substrate body (1210).

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).

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.

Meanwhile, as illustrated in FIG. 9, a plurality of driving elements (1400-1) are mounted on the substrate body (1210) and arranged in a row along the first direction (Z) on the front surface (1210F) of the substrate body (1210), so that the wiring of the substrate (1200) connected to the plurality of driving elements (1400-1) can be simplified.

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 on 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. 9, the plurality of driving elements (1400-1) are mounted in a group only on the substrate body (1210) and are arranged in a row along the first direction (Z) of the substrate body (1210), so that the wiring of the plurality of driving elements (1400-1) can be simplified.

FIG. 10 is an enlarged view of a portion of another example of a light source device of a display device according to one embodiment of the present disclosure.

In describing a display device (1) according to one embodiment of the present disclosure with reference to FIG. 10, the same drawing reference numerals may be given to the configuration corresponding to the configuration of the embodiment described with reference to FIGS. 1 to 9, and the description thereof may be omitted.

Referring to FIG. 10, a display device (1) according to one embodiment of the present disclosure may include a plurality of driving elements (1400-1). Each of the plurality of driving elements (1400A, 1400B) according to the embodiment of FIG. 14 may have a structure corresponding to each of the plurality of driving elements (1400-1) according to the embodiment of FIG. 9.

As described above, a reflective sheet (120) may be attached to the front surface of the substrate body (1210). Accordingly, 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.

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.

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).

More specifically, as illustrated in FIG. 10, the plurality of driving elements (1400) may include driving elements (1400A) in a first row and driving elements (1400B) in a second row.

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).

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).

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).

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.

Meanwhile, as illustrated in FIG. 10, 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.

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. 10, the plurality of driving elements (1400-1) 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 (1400-1) can be simplified.

FIG. 11 is a diagram illustrating signal lines of wiring connected to driving elements of an example of a light source device of a display device according to one embodiment of the present disclosure.

Referring to FIG. 11, a plurality of driving elements (1400-1) may be arranged along a first direction (Z) on a front surface (1210F) of a substrate body (1210). A plurality of driving elements (1400-1) may be arranged spaced apart from each other along the first direction (Z) on a front surface (1210F) of a substrate body (1210).

A plurality of driving elements (1400-1) may be mounted in a group only on the substrate body (1210) to simplify the wiring of the substrate (1200) connected to the plurality of driving elements (1400-1) and may be arranged in a row along the first direction (Z) on the front surface (1210F) of the substrate body (1210).

A plurality of driving elements (1400-1) may be electrically connected to wiring (1300) formed on a substrate (1200). A plurality of driving elements (1400-1) may be electrically connected to a control assembly (50) and/or a power assembly (60) via wiring (1300) or the like.

Wiring (1300) can be formed on the substrate (1200).

The wiring (1300) may include a signal line (1310) and a control line (133O) (see FIG. 12).

The signal line (1310) can be formed on the substrate body (1210).

The signal line (1310) can be arranged along the first direction (Z) of the substrate body (1210).

The signal line (1310) can input input signals such as a data signal, a scan signal, and a clock signal (timing signal) to a plurality of driving elements (1400-1). The signal line (1310) can be electrically connected to a plurality of driving elements (1400-1).

The signal line (1310) may include a data line (D) and a scan line (S).

A data line (D) can provide a data signal to a plurality of driving elements (1400-1). The data signal can include a dimming signal.

A scan line (S) can provide a scan signal to a plurality of driving elements (1400-1).

The signal line (1310) may include a clock line (CLK) that provides a clock signal, which is a timing signal, to a plurality of driving elements (1400-1).

A plurality of driving elements (1400-1) can be mounted in a group only on the substrate body (1210). Accordingly, the signal lines (1310) connected to the plurality of driving elements (1400-1) can be formed only on the substrate body (1210) and not on the plurality of substrate bars (1220). This simplifies the wiring of the signal lines (1310) of the plurality of driving elements (1400-1). That is, since the space on the substrate body (1210) is small and the design is restricted due to the intersection of the signal lines (1310) and the control lines (1330), signal lines such as data lines, scan lines, and clock lines that are commonly connected to the plurality of driving elements (1400-1) can be wired in a straight line, thereby reducing the number of via holes for wiring connection and alleviating the design difficulty, thereby simplifying the wiring of the signal lines (1310) of the plurality of driving elements (1400-1).

In addition, since the width (W1) of the substrate body (1210) in the second direction (Y) is wider than the width (W2) of each of the plurality of substrate bars (1220) in the first direction (Z), complex signal lines can be arranged in a relatively wide space, which can significantly alleviate design difficulty.

In this way, by mounting a plurality of driving elements (1400-1) in a group only on the substrate body (1210) and forming a signal line (1310) connected to the plurality of driving elements (1400-1) on the substrate body (1210), the wiring of the signal line (1310) of the plurality of driving elements (1400-1) can be simplified.

Additionally, the signal line (1310) may further include a power line (1320).

A power line (1320) may be formed in the substrate body (1210). The power line (1320) may include a ground line (GND) formed in the substrate body (120).

The power line (1320) can be arranged along the first direction (Z) of the substrate body (1210).

The power line (1320) can supply power to each of the plurality of driving elements (1400-1).

In this way, by forming a power line (1320) connected to a plurality of driving elements (1400-1) in the substrate body (1210) to provide power to the plurality of driving elements (1400-1), the wiring of the power line (1320) of the plurality of driving elements (1400-1) can be simplified.

FIG. 12 is a diagram illustrating control lines of wiring connected to driving elements of an example of a light source device of a display device according to one embodiment of the present disclosure.

Referring to FIG. 12, a control line (1330) can be formed on each of the substrate body (1210) and the plurality of substrate bars (1220).

The control line (1330) is formed on the substrate body (1210) and the plurality of substrate bars (1220) and can connect the light sources (1130) (body light source) mounted on the substrate body (1210) and the light sources (1120) (second side light sources) mounted on the plurality of substrate bars (1220).

The control line (1330) can electrically connect each of a plurality of driving elements (1400-1) and a plurality of dimming blocks including at least one light source among a plurality of light sources (1100). The plurality of dimming blocks are dimming blocks controlled by the plurality of driving elements (1400-1).

The control line (1330) may include wiring connecting multiple light sources within multiple dimming blocks (200) and wiring connecting the driving element (1400-1) and the multiple dimming blocks (200). Meanwhile, the control line (1330) may include only wiring connecting the driving element (1400-1) and the multiple dimming blocks (200).

In this way, since the plurality of driving elements (1400-1) are mounted in a group only on the substrate body (1210), only the control line (1330) among the signal line (1310) and the control line (1330) can be placed on the plurality of substrate bars (1220), thereby reducing the number of via holes for wiring connection of the control line (1330) of the plurality of driving elements (1400-1), simplifying the wiring design, and simplifying the wiring of the control line (1330).

FIG. 13 is a diagram illustrating signal lines connected to driving elements of another example of a light source device of a display device according to one embodiment of the present disclosure.

In describing signal lines connected to driving elements of another example of a light source device of a display device according to one embodiment of the present disclosure with reference to FIG. 13, the same reference numerals may be given to configurations corresponding to the configurations of the embodiments described with reference to FIGS. 11 and 12, and descriptions thereof may be omitted.

Referring to FIG. 13, the plurality of driving elements (1400) may include a driving element (1400A) of a first row and a driving element (1400B) of a second row.

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

The driving elements (1400B) of the second row can be arranged along the first direction (Z). The driving elements (1400B) included in the driving elements (1400B) of the second row can be arranged to be spaced apart from each other along the first direction (Z).

Each driving element (1400A) included in the driving element (1400A) of the first row and each driving element (1400B) included in the driving element (1400B) of the second row can be arranged so that their positions in the second direction (Y) are spaced apart from each other.

The driving elements (1400A) of the first row and the driving elements (1400B) of the second row can be mounted in groups only on the substrate body (1210) to simplify the wiring of the substrate (1200) connected to the driving elements (1400A) of the first row and the driving elements (1400B) of the second row, and can be arranged in a zigzag pattern along the first direction (Z) on the front surface (1210F) of the substrate body (1210).

The driving elements (1400A) of the first row and the driving elements (1400B) of the second row can be electrically connected to the aforementioned signal line (1310) formed on the substrate (1200).

The signal line (1310) may be formed on the substrate body (1210) and arranged in at least one column along the first direction (Z) of the substrate body (1210).

The signal line (1310) can input input signals such as data signals, scan signals, and clock signals to a plurality of driving elements (1400A, 1400B). The signal line (1310) can be electrically connected to a plurality of driving elements (1400A, 1400B).

The signal line (1310) may include a data line (D) and a scan line (S).

A data line (D) can provide a data signal to a plurality of driving elements (1400A, 1400B). The data signal can include a dimming signal.

The data line (D) may include data lines (D1, D2) of a first column arranged along the first direction (Z) and data lines (D3, D4, D5, D6) of a second column spaced parallel to the data lines (D1, D2) of the first column.

Scan lines (S1, S2) can provide scan signals to multiple driving elements (1400A, 1400B).

Scan lines (S1, S2) can be arranged adjacent to data lines (D1, D2) of the first column.

The signal line (1310) may include a clock line (CLK) that provides a clock signal, which is a timing signal, to a plurality of driving elements (1400A, 1400B).

The clock line (CLK) may be placed adjacent to the scan lines (S1, S2).

For example, as illustrated in FIG. 13, the data lines (D1, D2), scan lines (S1, S2), and clock lines (CLK) of the first column can be connected to the driving elements (1400A) of the first column, respectively.

The driving elements (1400B) of the second row can be connected to the data lines (D3, D4, D5, D6), scan lines (S1, S2), and clock lines (CLK) of the second row, respectively.

In this way, by mounting a plurality of driving elements (1400A, 1400B) in a group only on the substrate body (1210) and forming a signal line (1310) connected to the plurality of driving elements (1400A, 1400B) on the substrate body (1210), the wiring of the signal line (1310) of the plurality of driving elements (1400A, 1400B) can be simplified.

FIG. 14 is a drawing showing the wiring width of a control line connected to driving elements of a light source device of a display device according to one embodiment of the present disclosure.

Referring to FIG. 14, since a plurality of driving elements (1400) are mounted in a group only on the substrate body (1210), only the control line (1330) among the signal lines (1310) and the control lines (1330) can be placed on the plurality of substrate bars (1220).

Conventionally, since multiple driving elements (1400) are mounted on multiple substrate bars (1220), not only the control line (1330) but also the signal line (1310) are arranged together. As a result, since the wiring of the signal line (1310) and the control line (1330) must be formed on multiple substrate bars (1220), the wiring becomes complicated, the number of via holes increases, and the wiring design becomes complicated.

However, since the plurality of substrate bars (1220) of the present disclosure do not have a plurality of driving elements (1400) mounted thereon, there is no need to wire the signal lines (1310). Therefore, the plurality of substrate bars (1220) can be designed by simply considering the control lines (1330). This simplifies the wiring of the control lines (1330), such as reducing the number of via holes in the plurality of substrate bars (1220) and simplifying the wiring design.

In addition, since the signal line (1310) is absent and the control line (1330) is mounted on the plurality of substrate bars (1220), the width of the plurality of substrate bars (1220) can be reduced. For example, the minimum distance between the first recessed portion (1223a) and the second recessed portion (1223b) forming the area through which the control line (1330) passes in the plurality of substrate bars (1220) can be determined based on the number of wires and the wire width of the control line (1330).

FIG. 15 is a control block diagram of a display device according to one embodiment of the present disclosure.

Referring to FIG. 15, 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).

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.

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.

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.

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).

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.

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.

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).

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.

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.

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).

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.

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.

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

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.

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.

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.

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).

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).

The light source device (1000) may include a plurality of light sources (1100) that emit light. The plurality of light sources (1100) are arranged in a matrix shape. In other words, the plurality of light sources (1100) may be arranged in a plurality of rows and a plurality of columns.

The 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.

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.

At this time, the light source device (1000) can turn off a plurality of 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.

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.

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.

Each of the plurality of dimming blocks (200) may include at least one light source (1100). The light source device (1000) may supply the same driving current to the light sources belonging to the same dimming block (200), and the light sources belonging to the same dimming block (200) may emit light of the same brightness. For example, the light sources belonging to the same dimming block (200) are connected in series with each other, and thus the same driving current may be supplied to the light sources belonging to the same dimming block (200).

In addition, the light source device (1000) may include a plurality of driving elements (1400) that control driving currents supplied to light sources included in each of the plurality of dimming blocks (200). The driving elements (1400) may be provided to correspond to at least one dimming block (200), respectively. In other words, the driving elements (300) may each drive the dimming blocks (200).

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

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.

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.

As described above, 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).

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

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).

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

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.

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.

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.

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

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).

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

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

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

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

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.

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).

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).

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.

FIG. 16 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.

Referring to FIG. 16, each of the plurality of dimming blocks (200) may include a plurality of light sources (1100) connected in series with each other.

For example, each of the plurality of dimming blocks (200) can be supplied with a driving voltage (V _LED ) through a power wire (1230). The power wire (1230) may be a power line (1320) that supplies power to the driving element (1400), or a wire branched from the power line (1320).

For example, each of the plurality of dimming blocks (200) may be electrically connected to the driving element (1400) through the control line (1330) of the driving element (1400). The driving element (1400) may control the driving current flowing to each of the plurality of dimming blocks (200) through the control line (1330).

Assuming that one dimming block (200) includes a first LED, a second LED, a third LED, and a fourth LED, the anode of the first LED can be connected to a power line (1230), the cathode of the first LED can be connected to the anode of the second LED, the cathode of the second LED can be connected to the anode of the third LED, the cathode of the third LED can be connected to the anode of the fourth LED, and the cathode of the fourth LED can be connected to a driving element (1400) via a control line (1330).

That is, among the plurality of light sources (1100) connected in series and included in one dimming block (200), the first light source (first LED) (1100) of the series connection can be connected to a power line (1230) to receive a driving voltage (V _LED ), and the last light source (fourth LED) (1100) of the series connection can be connected to a driving element (1400) through a control line (1330).

The driving element (1400) can receive an analog dimming signal from the dimming driver (170) while it is activated by the dimming driver (170) and store the received analog dimming signal. In addition, while it is 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 (1100).

The driving element (1400) can control the driving current supplied to each of the plurality of dimming blocks (200) through the control line (1330) while the driving voltage (V _LED ) is applied to the plurality of dimming blocks (200).

A plurality of driving elements (1400) may be connected to a signal line (1310) that provides an input signal to the plurality of driving elements (1400). The signal line (1310) may include a data line (D) that provides an analog dimming signal to the plurality of driving elements (1400), a scan line (S) that provides a scan signal to the plurality of driving elements (1400), and/or a clock line (CLK) that provides a clock signal, which is a timing signal, to the plurality of driving elements (1400).

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

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.

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.

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).

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

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).

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.

FIG. 17 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.

Referring to FIG. 17, a plurality of dimming blocks (200) can be divided into a first group (#1-1, #1-2, #1-3) and a second group (#2-1, #2-2, #2-3).

The plurality of driving elements (1400) may include a first driving element (1400C) and a second driving element (1400D).

The first driving element (1400C) can control the first light sources included in the dimming blocks of the first group (#1-1, #1-2, #1-3).

The second driving element (1400D) can control the second light sources included in the dimming blocks of the second group (#2-1, #2-2, #2-3).

The first group (#1-1, #1-2, #1-3) may include a dimming block including first light sources (L1-L12) connected in series among a plurality of light sources (1100).

The first light sources (L1-L12) may include light sources mounted on two adjacent substrate bars (1220) among a plurality of substrate bars (1220).

The second group (#2-1, #2-2, #2-3) may include a dimming block including second light sources (L1-L12) connected in series among a plurality of light sources (1100).

The second light sources (L1-L12) may include light sources mounted on two adjacent substrate bars (1220) among the plurality of substrate bars (1220).

For example, the arrangement of dimming blocks belonging to the same group and light sources within the same dimming block may vary, and the method of classifying groups is not limited thereto.

In this way, by grouping and mounting a plurality of driving elements (1400) only on the substrate body (1210), the wiring of the signal lines (1310) and the control lines (1330) connected to the plurality of driving elements (1400) can be simplified, and design diversification can be realized without the need to limit the location of the same group of dimming blocks (200) controlled by the same driving element (1400) to a specific substrate bar (1220). Furthermore, the combination of light sources within the same dimming block (200) can be expanded to light sources mounted on adjacent substrate bars (1220) without the need to limit the combination of light sources within one substrate bar (1220), thereby further realizing design diversification.

In Fig. 17, only some of the plurality of dimming blocks (200) are illustrated. The display device (1) according to one embodiment may include more dimming blocks (200) and driving elements (1400) for local dimming. In addition, the display device (1) requires the aforementioned signal line (1310) (data line (D), scan line (S), clock line (CLK)), and/or power line (1320)) and a control line (1330) connecting the dimming blocks (200) and the driving elements (1400).

Accordingly, it is required to simplify the arrangement of the signal line (1310) and the control line (1330) on the substrate (112). For example, if the signal line (1310) and the control line (1330) cross each other on the substrate (1200), the circuit complexity may increase.

However, the display device (1) according to one embodiment of the present disclosure can simplify the wiring of the signal lines (1310) of the plurality of driving elements (1400) by mounting the plurality of driving elements (1400) in a group only on the substrate body (1210) and forming the signal lines (1310) connected to the plurality of driving elements (1400) on the substrate body (1210). In addition, since only the control line (1330) among the signal lines (1310) and the control lines (1330) is arranged on the plurality of substrate bars (1220), the number of via holes for wiring connection of the control lines (1330) of the plurality of driving elements (1400-1) can be reduced, and the wiring design can be simplified, thereby simplifying the wiring of the control lines (1330).

FIG. 18 is a diagram illustrating an example of a connection structure of driving elements and dimming blocks of a display device according to another embodiment of the present disclosure. FIG. 19 is a simplified diagram of the connection structure of the driving elements and dimming blocks illustrated in FIG. 18.

Referring to FIGS. 18 and 19, each of the plurality of dimming blocks (200) may include a plurality of light sources (1100) connected in series with each other. For example, the plurality of dimming blocks (200) may include four dimming blocks (201, 202, 203, 204).

Each of the four dimming blocks (201, 202, 203, 204) may include light sources (1100) connected in series with each other. Each of the four dimming blocks (201, 202, 203, 204) may be driven by the same driving element (1400).

The light sources belonging to each of the four dimming blocks (201, 202, 203, 204) can be arranged across two adjacent substrate bars (1220a, 1220b).

Each of the four dimming blocks (201, 202, 203, 204) can be electrically connected to the driving element (1400) via the control line (1330) of the driving element (1400). The driving element (1400) can control the driving current flowing to each of the plurality of dimming blocks (200) via the control line (1330).

Each of the four dimming blocks (201, 202, 203, 204) can be supplied with a driving voltage (VLED) through a power wire (1230).

The power wiring (1230) can be provided only on one of the two adjacent substrate bars (1220a, 1220b) constituting each dimming block (200).

The power wiring (1230) may be connected to the anode of the first light source (first LED) (1100) of each dimming block (200). For example, the power wiring (1230) may be provided only on the first substrate bar (1220a) among the two substrate bars (1220a, 1220b).

For example, assuming that the first dimming block (201) includes a first LED, a second LED, a third LED, and a fourth LED, the anode of the first LED can be connected to the power wiring (1230), the cathode of the first LED can be connected to the anode of the second LED, the cathode of the second LED can be connected to the anode of the third LED, the cathode of the third LED can be connected to the anode of the fourth LED, and the cathode of the fourth LED can be connected to the driving element (1400) via the first control line (1331).

That is, among the four light sources (1100) connected in series and included in the first dimming block (201), the first light source (first LED) (1100) of the series connection can be connected to a power line (1230) to receive a driving voltage (VLED), and the last light source (fourth LED) (1100) of the series connection can be connected to a driving element (1400) through a first control line (1331).

The second dimming block (202) to the fourth dimming block (204) can be connected in the same manner as the first dimming block (201).

As illustrated in FIG. 19, five wires may be provided on the first substrate bar (1220a) provided with power wiring (1230), and eight wires may be provided on the second substrate bar (1220b).

In a structure where one dimming block spans two substrate bars (1220a, 1220b), multiple wires must pass through the two substrate bars (1220a, 1220b) because the LEDs of the two substrate bars (1220a, 1220b) must be connected to each other. Accordingly, the wires (1-4) entering the LED and the wires (5-8) exiting the LED must be arranged on one of the two substrate bars (1220a, 1220b), and the common wires, the power wire (1230) (1) and the wires exiting the LED (2-5), can be arranged on the other substrate bar (1220a).

For example, five wires (1-5) must pass through the first substrate bar (1220a), and eight wires (1-8) must pass through the second substrate bar (1220b). In this case, since the width of the substrate bar must be determined according to the number of eight wires, the area of the printed circuit board (PCB) increases, which may increase the cost of the printed circuit board.

Therefore, by minimizing the number of wires passing through the substrate bar, the wiring width of the substrate bar can be minimized, the wiring can be simplified, and the cost of the printed circuit board can be reduced, and operational stability can be ensured.

FIG. 20 is a diagram illustrating an example of a connection structure of driving elements and dimming blocks of a display device according to another embodiment of the present disclosure. FIG. 21 is a simplified diagram of the connection structure of the driving elements and dimming blocks illustrated in FIG. 20.

Referring to FIGS. 20 and 21, the power wiring (1230) may include a first power wiring (1231) and a second power wiring (1232).

The first power wiring (1231) may be provided on the first substrate bar (1220a), and the second power wiring (1232) may be provided on the second substrate bar (1220b).

The first power wiring (1231) may be provided on the first substrate bar (1220a) and connected to the anode of the first light source (first LED) (1100) of the series connection among the four light sources of the first dimming block (201), and may be connected to the anode of the first light source (first LED) (1100) of the series connection among the four light sources of the third dimming block (203). The last light source (fourth LED) (1100) of the series connection of the first dimming block (201) may be connected to the driving element (1400) via the first control line (1331). The last light source (fourth LED) (1100) of the series connection of the third dimming block (203) may be connected to the driving element (1400) via the third control line (1333).

The second power wiring (1232) may be provided on the second substrate bar (1220b) and connected to the anode of the first light source (first LED) (1100) of the series connection among the four light sources of the second dimming block (202), and may be connected to the anode of the first light source (first LED) (1100) of the series connection among the four light sources of the fourth dimming block (204). The last light source (fourth LED) (1100) of the series connection of the second dimming block (202) may be connected to the driving element (1400) via the second control line (1332). The last light source (fourth LED) (1100) of the series connection of the fourth dimming block (204) may be connected to the driving element (1400) via the fourth control line (1334).

As illustrated in FIG. 21, seven wires (1-7) may be provided on the first substrate bar (1220a) provided with power wiring (1230), and seven wires (1-7) may be provided on the second substrate bar (1220b).

In this way, since the total number of wires provided on the substrate bar (1220) cannot be reduced, the maximum number of wires provided on one substrate bar (1220a)(1220b) can be reduced by making the number of wires provided on two substrate bars (1220a, 1220b) the same, thereby reducing the thickness of the substrate bar (1220a)(1220b). To this end, the power wire (1230) connected to the dimming block is not arranged on only one substrate bar (1220a)(1220b), but is arranged alternately on two substrate bars (1220a, 1220b), thereby making the number of wires provided on the two substrate bars (1220a, 1220b) the same, thereby reducing the maximum number of wires.

As described above, there is a need to reduce the PCB area of a display device using a finger-type printed circuit board (PCB) composed of a substrate body (1210) and a plurality of substrate bars (1220) to reduce the PCB price. At this time, since the dimming block of the printed circuit board is configured across two adjacent substrate bars, a large number of wires must be connected to the substrate bars. Since there is a limit to how much the width of the wires and the spacing between the wires can be reduced, as the number of wires increases, the width of the substrate bars increases. As the wiring width increases, the amount by which the PCB area is reduced decreases, so the amount of reduction in PCB cost decreases, which reduces the advantage of the finger-type PCB.

When a display device according to one embodiment of the present invention is applied, the maximum number of wires connected to a single substrate bar is reduced, thereby reducing the width of the substrate bar. Furthermore, because the number of wires is reduced, the wiring arranged on the substrate bar is simplified, allowing for increased spacing between wires, which can help improve signal robustness.

For example, if the wiring width of the substrate bar is 0.5 mm and the wiring interval is also 0.5 mm, a width of 8 mm is required for 8 wirings to pass. When a display device according to an embodiment of the present invention is applied, the 8 wirings of the substrate bar can be reduced to 7 wirings, so the width of the substrate bar is reduced from 8 mm to 7 mm. Assuming that the length of the substrate bar is 200 mm and the number of substrate bars is 6, the area of the substrate bar can be reduced by approximately 15% from 9600 mm2 to 8400 mm2.

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) provided on the substrate body (1210) and the plurality of substrate bars (1220) and arranged to irradiate light toward the image display unit (20); a plurality of dimming blocks (200) including at least one light source among the plurality of light sources (1100); A plurality of driving elements (1400) provided only in the substrate body (1210) among the substrate bars (1220) and driving the plurality of dimming blocks (200); and a signal line (1310) formed in the substrate body (1210) and connected to the plurality of driving elements (1400); wherein the signal line (1310) may include a data line for transmitting a data signal to the plurality of driving elements (1400), a scan line for transmitting a scan signal to the plurality of driving elements (1400), and a power line for supplying power to the plurality of driving elements (1400).

Some of the plurality of light sources (1100) may be provided on the substrate body (1210), and the remainder of the plurality of light sources (1100) may be provided on the plurality of substrate bars (1220).

Each of the plurality of driving elements (1400) and the at least one signal line (1310) may be arranged along the first direction (Z) of the substrate body (1210).

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

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.

The plurality of driving elements (1400) may be arranged so that their positions in the first direction (Z) are different from each other, but the plurality of driving elements (1400) may be arranged so that their positions in the second direction (Y) are the same.

The signal line (1310) may further include a clock line that transmits a clock signal to the plurality of driving elements (1400).

The plurality of dimming blocks (200) are divided into a first group and a second group, and the plurality of driving elements (1400) include a first driving element (1400) and a second driving element (1400), and the first driving element (1400) can control the first light sources included in the dimming blocks of the first group, and the second driving element (1400) can control the second light sources included in the dimming blocks of the second group.

The first group includes a first dimming block including first light sources connected in series among the plurality of light sources (1100), and the first light sources can be provided on two adjacent substrate bars (1220) among the plurality of substrate bars (1220).

The plurality of dimming blocks (200) include a first dimming block including first light sources connected in series to each other among the plurality of light sources, and a second dimming block including second light sources connected in series to each other among the plurality of light sources, and each of the first dimming block and the second dimming block may be provided on two adjacent substrate bars among the plurality of substrate bars.

A control line formed on the substrate electrically connecting one of the plurality of driving elements to the first dimming block and electrically connecting one of the plurality of driving elements to the second dimming block; and a power wiring for supplying power to the first dimming block and the second dimming block; wherein only the control line and the power wiring among the signal line, the control line, and the power wiring may be provided on the plurality of substrate bars.

The power wiring includes a first power wiring provided on a first substrate bar among two adjacent substrate bars, and a second power wiring provided on a second substrate bar, wherein the first power wiring can supply power to the first dimming block, and the second power wiring can supply power to the second dimming block.

The width of the plurality of substrate bars can be determined based on the number of wires and the wire width of the control lines and the power wires.

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 provided; 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 in which another part of the plurality of light sources (1100) is provided; 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 (1222b), 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).

A light source device (1000) according to one embodiment of the present disclosure 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) provided on the substrate body (1210) and the plurality of substrate bars (1220); a plurality of dimming blocks (200) including at least one light source among the plurality of light sources (1100); a plurality of driving elements (1400) provided only on the substrate body among the substrate body and the plurality of substrate bars, the driving elements driving the plurality of dimming blocks; And a signal line (1310) formed on the substrate body (1210) and connected to the plurality of driving elements (1400); the signal line (1310) may include a data line for transmitting a data signal to the plurality of driving elements (1400), a scan line for transmitting a scan signal to the plurality of driving elements (1400), and a power line for supplying power to the plurality of driving elements.

Each of the plurality of driving elements (1400) and the signal lines may be arranged along the first direction (Z) of the substrate body (1210).

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

The plurality of dimming blocks include a first dimming block including first light sources connected in series to each other among the plurality of light sources, and a second dimming block including second light sources connected in series to each other among the plurality of light sources, and each of the first dimming block and the second dimming block may be provided on two adjacent substrate bars among the plurality of substrate bars.

A control line formed on the substrate electrically connecting one of the plurality of driving elements to the first dimming block and electrically connecting one of the plurality of driving elements to the second dimming block; and a power wiring for supplying power to the first dimming block and the second dimming block; wherein only the control line and the power wiring among the signal line, the control line, and the power wiring may be provided on the plurality of substrate bars.

The power wiring includes a first power wiring provided on a first substrate bar among two adjacent substrate bars, and a second power wiring provided on a second substrate bar, wherein the first power wiring can supply power to the first dimming block, and the second power wiring can supply power to the second dimming block.

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.

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.

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.

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.

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.

1; display device
15; Bottom Chassis
20; Display panel
100; backlight unit
1000; light source device
1100; light source
1200; substrate
1210; substrate body
1220; substrate bar
1221; Central extension
1222a; first projection
1222b; Second projection
1223a; 1st recess
1223b; 2nd recess
1300; wiring
1310: Signal line
1320: Power line
1330: Control line
1400; driving element

Claims (20)

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 provided on the substrate body and the plurality of substrate bars and arranged to irradiate light toward the image display unit;
A plurality of dimming blocks including at least one light source among the plurality of light sources;
A plurality of driving elements provided only in the substrate body among the substrate body and the plurality of substrate bars, and driving the plurality of dimming blocks; and
A signal line formed on the substrate body and connected to the plurality of driving elements;
The above signal line is,
A display device comprising a data line for transmitting a data signal to the plurality of driving elements, a scan line for transmitting a scan signal to the plurality of driving elements, and a power line for supplying power to the plurality of driving elements. In the first paragraph,
Part of the plurality of light sources are respectively provided on the above substrate body,
A display device in which the remainder of the plurality of light sources are respectively provided on the plurality of substrate bars. In the first paragraph,
Each of the plurality of driving elements and the signal lines,
A display device arranged along the first direction of the above substrate body. In the third paragraph,
The above plurality of driving elements are,
A display device in which the driving elements are arranged so that their positions in the first direction are different from each other, and some of the driving elements among the plurality of driving elements are arranged so that their positions in the second direction are different from those of other driving elements among the plurality of driving elements. In paragraph 4,
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. In the third paragraph,
The above plurality of driving elements are,
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, but the plurality of driving elements are arranged so that their positions in the second direction are the same. In the first paragraph,
A display device further comprising: a clock line for transmitting a clock signal to the plurality of driving elements; In the first paragraph,
The above plurality of dimming blocks are divided into a first group and a second group,
The above plurality of driving elements include a first driving element and a second driving element,
The first driving element controls the first light sources included in the first group of dimming blocks,
A display device in which the second driving element controls second light sources included in the second group of dimming blocks. In Article 8,
The first group includes a first dimming block including first light sources connected in series among the plurality of light sources,
A display device in which the first light sources are provided on two adjacent substrate bars among the plurality of substrate bars. In the first paragraph,
The plurality of dimming blocks include a first dimming block including first light sources connected in series to each other among the plurality of light sources, and a second dimming block including second light sources connected in series to each other among the plurality of light sources,
A display device in which each of the first dimming block and the second dimming block is provided on two adjacent substrate bars among the plurality of substrate bars. In Article 10,
A control line formed on the substrate electrically connecting one of the plurality of driving elements to the first dimming block and electrically connecting one of the plurality of driving elements to the second dimming block; and
Further comprising: a power wiring supplying power to the first dimming block and the second dimming block;
A display device in which only the control lines and the power lines among the signal lines, the control lines, and the power lines are provided on the plurality of substrate bars. In Article 11,
The above power wiring is,
It includes a first power wiring provided on a first substrate bar among two adjacent substrate bars, and a second power wiring provided on a second substrate bar,
The above first power wiring supplies power to the first dimming block,
The above second power wiring is a display device that supplies power to the second dimming block. In Article 11,
The width of the above plurality of substrate bars is
A display device determined based on the number of wires and the wire width of the control line and the power wire. In the first paragraph,
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 provided with some of the plurality of light sources;
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. 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 provided on the substrate body and the plurality of substrate bars;
A plurality of dimming blocks including at least one light source among the plurality of light sources;
A plurality of driving elements provided only in the substrate body among the substrate body and the plurality of substrate bars, and driving the plurality of dimming blocks; and
A signal line formed on the substrate body and connected to the plurality of driving elements;
The above signal line is,
A light source device comprising a data line for transmitting a data signal to the plurality of driving elements, a scan line for transmitting a scan signal to the plurality of driving elements, and a power line for supplying power to the plurality of driving elements. In Article 15,
Each of the plurality of driving elements and the signal lines,
A light source device arranged along the first direction of the above substrate body. In Article 16,
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. In Article 15,
The plurality of dimming blocks include a first dimming block including first light sources connected in series to each other among the plurality of light sources, and a second dimming block including second light sources connected in series to each other among the plurality of light sources,
The first dimming block and the second dimming block are each a light source device provided on two adjacent substrate bars among the plurality of substrate bars. In Article 18,
A control line formed on the substrate electrically connecting one of the plurality of driving elements to the first dimming block and electrically connecting one of the plurality of driving elements to the second dimming block; and
Further comprising: a power wiring supplying power to the first dimming block and the second dimming block;
A light source device in which only the control line and the power wiring among the signal line, the control line and the power wiring are provided on the plurality of substrate bars. In Article 19,
The above power wiring is,
It includes a first power wiring provided on a first substrate bar among two adjacent substrate bars, and a second power wiring provided on a second substrate bar,
The above first power wiring supplies power to the first dimming block,
The above second power wiring is a light source device that supplies power to the second dimming block.