Display apparatus

Abstract

This display apparatus comprises: a display panel; a plurality of light sources provided to irradiate light toward the display panel; and a light source substrate on which the plurality of light sources are provided. The light source substrate comprises: a substrate body extending in a first direction; a plurality of substrate bars spaced apart from each other in the first direction and extending from one side of the substrate body in a second direction different from the first direction; and a substrate line connected to at least some of the plurality of light sources, and at least some of the plurality of light sources are provided as a plurality of dimming blocks on a first substrate bar, and each dimming block includes a predetermined number of light sources among the plurality of light sources.

Description

display device

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

[0002] A display device is a type of output device that converts acquired or stored electrical information into visual information and displays it to the user, and is used in various fields such as homes and businesses.

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

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

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

[0006] One aspect of the present disclosure provides a display device having an improved structure to improve the efficiency of arrangement of substrate lines on a light source substrate.

[0007] One aspect of the present disclosure provides a display device having an improved structure that reduces the number of electronic components mounted on a light source substrate by reducing the degree of intersection between substrate lines.

[0008] One aspect of the present disclosure provides a display device having an improved structure capable of efficiently arranging substrate lines on a cross-sectional mounting type light source substrate.

[0009] One aspect of the present disclosure provides a display device having an improved structure to improve efficiency in a manufacturing process of a light source device and reduce manufacturing costs.

[0010] Additional aspects will be presented in part in the following description, will become apparent in part from the following description, or may be learned by practicing the embodiments presented.

[0011] According to one aspect of the present disclosure, a display device may include a display panel, a plurality of light sources arranged to irradiate light toward the display panel, and a light source substrate on which the plurality of light sources are arranged. The light source substrate may include a substrate body extending in a first direction, a plurality of substrate bars spaced apart from each other in the first direction and extending in a second direction different from the first direction from one side of the substrate body, and a substrate line connected to at least a portion of the plurality of light sources. The at least a portion of the plurality of light sources may be provided as a plurality of dimming blocks on a first substrate bar, and each dimming block may include a predetermined number of light sources among the at least a portion of the plurality of light sources. The substrate line may include a dimming block line connected to at least one light source of each of the plurality of dimming blocks. At least a portion of the dimming block line may be disposed between a border of the first substrate bar and the at least a portion of the plurality of light sources.

[0012] The above substrate line may further include a light source inter-line connecting the light sources of each dimming block among the plurality of dimming blocks. At least a portion of the dimming block line may be arranged closer to the edge of the first substrate bar than the light source inter-line.

[0013] At least a second portion of the dimming block line may be disposed between a border of the substrate body and at least a portion of the plurality of light sources.

[0014] At least the second portion of the dimming block line may be adjacent to the edge of the substrate body. The edge of the substrate body may be opposite to the plurality of substrate bars.

[0015] The dimming block line may include a voltage line that is connected to a first light source of each of the plurality of dimming blocks and is configured to apply a driving voltage to each of the plurality of dimming blocks. A portion of the voltage line may be disposed between the first edge of the first substrate bar and at least a portion of the plurality of light sources.

[0016] A second portion of the voltage line may be disposed between a border of the substrate body and at least a portion of the plurality of light sources.

[0017] The voltage line may include a main line formed integrally with and disposed between the first edge of the first substrate bar and at least a portion of the plurality of light sources, and a branch line branched from the main line and connected to the first light source of each dimming block among the plurality of dimming blocks.

[0018] One or more of the light sources of each dimming block may be aligned with the first light source in the second direction. The first light source may be closer to the substrate body than the one or more light sources.

[0019] The display device may further include a driving circuit mounted on the light source substrate and configured to control driving current supplied to the light sources of the plurality of dimming blocks. The dimming block line may include a control line connecting the driving circuit and the second light source of each dimming block. The control line may be arranged between the second edge of the first substrate bar and at least a portion of the plurality of light sources.

[0020] The above substrate line may further include a light source inter-line connecting the light sources of each dimming block among the plurality of dimming blocks. The control line may include a plurality of control lines. The plurality of control lines may be arranged closer to the second edge of the first substrate bar than the light source inter-line.

[0021] Among the light sources of each dimming block, one or more light sources may be aligned with the second light source in the second direction. The second light source may be closer to the substrate body than the one or more light sources.

[0022] Each of the plurality of substrate bars may include a central extension portion extending in the second direction, a plurality of first protrusions protruding from a first side of the central extension portion in the first direction and on which some of the plurality of light sources are provided, and a plurality of second protrusions protruding from a second side of the central extension portion in the first direction and on which other parts of the plurality of light sources are provided. On the first substrate bar, a first portion of the dimming block line may be provided along an edge of the plurality of first protrusions of the first substrate bar. A second portion of the dimming block line may be provided along an edge of the plurality of second protrusions of the first substrate bar.

[0023] At least some of the plurality of light sources may include a plurality of first side light sources arranged on the plurality of first protrusions of the first substrate bar, and a plurality of second side light sources arranged on the plurality of second protrusions of the first substrate bar. The first portion of the dimming block line may be arranged between the plurality of first side light sources and edges of the plurality of first protrusions. The second portion of the dimming block line may be arranged between the plurality of second side light sources and edges of the plurality of second protrusions.

[0024] The dimming block line may further include a voltage line connected to a first light source of each dimming block among the plurality of dimming blocks and configured to apply a driving voltage to each of the plurality of dimming blocks, and a control line connected to a second light source of each dimming block among the plurality of dimming blocks and configured to control a driving current supplied to each of the plurality of dimming blocks. The voltage line may be arranged between the plurality of first-side light sources and edges of the plurality of first protrusions. The control line may be arranged between the plurality of second-side light sources and edges of the plurality of second protrusions.

[0025] The plurality of substrate bars may include the first substrate bar and a second substrate bar adjacent to the first substrate bar. A distance between a light source disposed at a first edge of the first substrate bar adjacent to the second substrate bar and a light source disposed at a second edge of the first substrate bar opposite the second substrate bar may be shorter than a distance between the light source at the first edge of the first substrate bar and a light source disposed at a edge adjacent to the first substrate bar of the second substrate bar.

[0026] According to one aspect of the present disclosure, a display device may include a display panel, a light source substrate, and a plurality of light sources provided on the light source substrate and configured to irradiate light toward the display panel. The plurality of light sources may include a substrate body extending in a first direction, a plurality of substrate bars spaced apart from each other in the first direction and extending from one side of the substrate body in a second direction different from the first direction, and a substrate line connected to at least a portion of the plurality of light sources. Each of the plurality of substrate bars may include a central extension portion extending in the second direction, and a plurality of protrusion portions protruding in the first direction from one side of the central extension portion, the protrusion portions on which at least a portion of the plurality of light sources is provided. The at least a portion of the plurality of light sources may be provided as a plurality of dimming blocks on the first substrate bar, and each dimming block may include a predetermined number of light sources among the at least a portion of the plurality of light sources. The substrate line may include a dimming block line connected to at least a portion of each of the plurality of dimming blocks. At least a portion of the dimming block line may be positioned between the edge of the first substrate bar and at least a portion of the plurality of light sources.

[0027] The above dimming block line may include a voltage line that is connected to a first light source of each of the plurality of dimming blocks, and is configured to apply a driving voltage to each of the plurality of dimming blocks. A portion of the voltage line may be disposed at a difference between the first edge of the first substrate bar and at least a portion of the plurality of light sources.

[0028] The display device may further include a driving circuit provided on the light source substrate and configured to control a driving current supplied to the light sources of the plurality of dimming blocks. The dimming block line may include a control line connected to the driving circuit and the second light source of each dimming block. The control line may be arranged between a border of the first substrate bar and at least a portion of the plurality of light sources.

[0029] The plurality of protrusions may include a plurality of first protrusions that protrude outwardly from a first side of the central extension in the first direction and on which a portion of the plurality of light sources is provided, and a plurality of second protrusions that protrude outwardly from a second side of the central extension in the first direction and on which another portion of the plurality of light sources is provided. At least a portion of the plurality of light sources may include a plurality of first-side light sources on the plurality of first protrusions and a plurality of second-side light sources on the plurality of second protrusions.

[0030] The voltage line may be arranged between the plurality of first side light sources and the edges of the plurality of first protrusions. The control line may be arranged between the plurality of second side light sources and the edges of the plurality of second protrusions.

[0031] The above and other aspects, features and advantages of specific embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings.

[0032] FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.

[0033] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0034] FIG. 3 is a cross-sectional view illustrating a liquid crystal panel included in a display device according to one embodiment of the present disclosure.

[0035] FIG. 4 is an enlarged view of a light source device and a reflective sheet included in a display device according to one embodiment of the present disclosure.

[0036] FIG. 5 is a drawing illustrating the front surface of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0037] FIG. 6 is a drawing illustrating the back surface of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0038] FIG. 7 is an enlarged view of a portion of a plurality of substrate bars of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0039] FIG. 8 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0040] FIG. 9 is a block diagram illustrating some components of a display device according to one embodiment of the present disclosure.

[0041] FIG. 10 is a drawing illustrating an example of a connection structure of a driving circuit and a dimming block of a light source device included in a display device according to one embodiment of the present disclosure.

[0042] FIG. 11 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0043] FIG. 12 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0044] Fig. 13 is an enlarged view of a portion of a light source substrate included in a display device according to a comparative example.

[0045] FIG. 14 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0046] FIG. 15 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0047] FIG. 16 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0048] 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.

[0049] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0050] 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.

[0051] 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.

[0052] Meanwhile, the terms “upper and lower directions,” “lower side,” and “front and rear directions” 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.

[0053] Hereinafter, various embodiments according to the present disclosure will be described in detail with reference to the attached drawings.

[0054] When describing various embodiments of the present disclosure with reference to FIGS. 1 to 16, the terms "front", "rear", "upper", "lower", "vertical direction", "horizontal direction (left-right 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 term "front-and-rear direction" below may mean a direction parallel to the X direction based on the drawings. For example, "vertical direction" may mean a direction parallel to the Z direction based on the drawings, and the terms "upper" and "lower" below may mean upward in the Z direction and downward in the Z direction, respectively, based on the drawings. For example, the term "horizontal direction (left-right direction)" below may mean a direction parallel to the Y direction based on the drawings, respectively.

[0055] FIG. 1 is a drawing illustrating a display device according to one embodiment of the present disclosure.

[0056] Referring to FIG. 1, a display device (1) according to one embodiment of the present disclosure is a device capable of processing an image signal received from an external source and visually displaying the processed image. The display device (1) can be implemented in various forms, such as a television (TV), a monitor (a type of computer output device), a portable multimedia device, or a portable communication device.

[0057] 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.

[0058] The display device (1) is a device that initially displays an image, and its type is not limited to the examples described above and can be configured in various ways.

[0059] In Fig. 1, the display device (1) is illustrated as a flat display device with a flat screen, but the embodiments of the present disclosure are not limited thereto. According to various embodiments of the present disclosure, the display device (1) may be a curved display device or a bendable or flexible display device in which the flat state and the curved state can be changed.

[0060] In FIG. 1, an embodiment in which the display device (1) has a rectangular plate shape in which the lengths of the horizontal and vertical sides are different from each other is illustrated, but in various embodiments of the present disclosure, the display device (1) may have a shape in which the lengths of the horizontal and vertical sides are almost the same.

[0061] 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.

[0062] 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.

[0063] As illustrated in FIG. 1, the display device (1) may include a main body (11) and a screen (12) that displays an image (I).

[0064] 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.

[0065] 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).

[0066] 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.

[0067] 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.

[0068] Each of the plurality of pixels (P) can emit light of different brightness and different colors. According to one embodiment, each of the plurality of pixels (P) comprises sub-pixels (P R , P G , P B ) may include sub-pixels (P R , P G , P B ) is a red sub-pixel (P) that can emit red light. R ), a green sub-pixel (P) capable of emitting green light G ) and blue sub-pixels (P) capable of emitting blue light. B ) can include. For example, red light can refer to light with a wavelength of approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, green light can refer to light with a wavelength of approximately 495 nm to 570 nm, and blue light can refer to light with a wavelength of approximately 450 nm to 495 nm.

[0069] Red subpixel (P R ), green subpixel (P G) and blue subpixel (P B ) Each of the plurality of pixels (P) can emit light of various brightness and colors by combining the light emitted from each pixel.

[0070] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0071] 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.

[0072] For example, the display device (1) may include a display panel (20). The display panel (20) may be provided on the main body (11). The display panel (20) may be provided to display an image (I). The screen (12) described in FIG. 1 may be formed on the front surface of the display panel (20).

[0073] For example, the display panel (20) may have a roughly rectangular shape. According to one embodiment, 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 disclosure is not limited thereto, and the display panel (20) may also be provided in a square plate shape in which the lengths of the long sides and the short sides are substantially equal.

[0074] 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.

[0075] 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).

[0076] On one side of the display panel (20), a cable (20a) for transmitting image data to the display panel (20) and a display driver integrated circuit (DDI) (30) (hereinafter referred to as a 'driver IC') for processing digital image data and outputting an analog image signal may be provided.

[0077] A cable (20a) can electrically connect between a printed circuit board assembly (PBA) (50) and a driver IC (30), and can also electrically connect between the driver IC (30) and a display panel (20). The cable (20a) may include a flexible flat cable or a film cable that can be bent.

[0078] The driver IC (30) can receive image data and power from the printed circuit board assembly (50) through the cable (20a), and transmit image data and driving current to the display panel (20) through the cable (20a).

[0079] In addition, the cable (20a) and the driver IC (30) may be implemented as a single unit, such as a film cable, a chip on film (COF), a tape carrier packet (TCP), etc. In other words, the driver IC (30) may be placed on the cable (20a). However, this is not limited thereto, and the driver IC (30) may be placed on the display panel (20).

[0080] A detailed description of the structure of the display panel (20) will be described later.

[0081] 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. According to one embodiment, 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.

[0082] 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.

[0083] As illustrated in FIG. 2, the backlight unit (100) may include a light source device (200). The light source device (200) may generate and emit light. According to one embodiment, the light source device (200) may be configured to emit monochromatic light or white light.

[0084] The light source device (200) may include a plurality of light sources (300) arranged to irradiate light and a light source substrate (400) on which the plurality of light sources (300) are mounted (see FIG. 4, etc.).

[0085] A detailed description of the light source device (200) will be described later.

[0086] 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.

[0087] For example, the reflective sheet (120) may be attached to the front of the light source device (200). According to one embodiment, the reflective sheet (120) may be attached to the front of the light source substrate (400).

[0088] For example, the light source device (200) (specifically, the light source (300) of the light source device (200), see FIG. 4) can emit light in various directions in front of the reflective sheet (120). The light emitted from the light source device (200) can be emitted not only toward the diffusion plate (130) described later, but also toward the reflective sheet (120) from the light source device (200), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffusion plate (130).

[0089] When light emitted from a light source device (200) 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.

[0090] 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 (200) and the reflective sheet (120). The diffuser plate (130) may evenly disperse light emitted from the light source device (200) and then emit the light forward.

[0091] 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.

[0092] The display device (1) may include one or more printed circuit board assemblies (50). For example, the display device (1) may include a main board (51) that controls the operation of a backlight unit (100) and a display panel (20), a driving board (53), and a power supply board (52) that supplies power to the backlight unit (100) and the display panel (20). The main board (51), the power supply board (52), and the driving board (53) may be electrically connected to each other. The main board (51), the power supply board (52), and the driving board (53) may each be provided in the main body (11).

[0093] The main board (51) and / or the driving board (53) may include a control circuit that controls the operation of the display panel (20) and the backlight unit (100). The control circuit may process image data received from an external content source, transmit an image data signal to the display panel (20), and transmit a dimming data signal to the backlight unit (100).

[0094] For example, the main board (51) can process video signals / audio signals, etc. and output content data in a form that can be output from the display panel (20) or speaker. Alternatively, the main board (51) can control the drive board (53). Alternatively, the main board (51) can be connected to the display panel (20) and control the display panel (20).

[0095] The driving board (53) is connected to the light source device (200) and can control the light source device (200). The driving board (53) can apply a driving voltage and / or a driving current to the light source device (200) based on a control signal of the main board (51). The driving board (53) is connected to the light source substrate (400, see FIG. 4) and can control the on / off operation of a plurality of light sources (300, see FIG. 4).

[0096] The power supply board (52) can supply power to the display panel (20) and the backlight unit (100) so that the backlight unit (100) outputs surface light and the display panel (20) blocks or passes light from the backlight unit (100).

[0097] Meanwhile, FIG. 2 illustrates an example in which a main board (51), a drive board (53), and a power supply board (52) are configured as separate printed circuit board assemblies (50), but alternatively, the main board (51), the drive board (53), and the power supply board (52) may be configured as a single integrated board assembly.

[0098] Each printed circuit board assembly (50) may be implemented with a printed circuit board and various circuits mounted on the printed circuit board. For example, a power circuit may include capacitors, coils, resistors, processors, etc., and a power circuit board on which these are mounted. In addition, a control circuit may include memory, a processor, and a control circuit board on which these are mounted.

[0099] 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).

[0100] 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 main board (51). For example, the display case may support a power supply board (52). For example, the display case may support a drive board (53).

[0101] 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.

[0102] 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 main board (51), a power supply board (52), and a driving board (53).

[0103] 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 to include a material with high thermal conductivity to dissipate heat generated from the backlight unit (100) to the outside. For example, the bottom chassis (15) may be formed to include a metal material such as aluminum or SUS, or a plastic material such as ABS.

[0104] 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).

[0105] 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 main board (51), a power supply board (52), a drive board (53), etc.).

[0106] 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.

[0107] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example for explaining the display device (1) according to one embodiment of the present disclosure, and the present disclosure is not limited thereto. In various embodiments of the present disclosure, the display device may be provided to include various configurations for performing the function of providing an image through a screen.

[0108] FIG. 3 is a cross-sectional view illustrating a liquid crystal panel included in a display device according to one embodiment of the present disclosure.

[0109] 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).

[0110] 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).

[0111] 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).

[0112] 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.

[0113] 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).

[0114] 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) can transmit light having a magnetic field vibrating in a second direction and block 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, in general, light may not be able to simultaneously transmit through the first polarizing film (21) and the second polarizing film (29).

[0115] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0116] The color filter (27) may include, for example, a red filter (27R) that passes red light, a green filter (27G) that passes green light, and a blue filter (27G) that passes blue light, and the red filter (27R), the green filter (27G), and the blue filter (27B) may be arranged parallel to each other. The area where the color filter (27) is formed may correspond to the pixel (P) described above. The area where the red filter (27R) is formed may correspond to the red sub-pixel (P). R ) corresponds to the green sub-pixel (P), and the area where the green filter (27G) is formed is the green sub-pixel (P G ) corresponds to the blue sub-pixel (P), and the area where the blue filter (27B) is formed is a blue sub-pixel (P B ) can be corresponded to.

[0117] 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).

[0118] 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.

[0119] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can transmit light incident from the outside. For example, the pixel electrode (23) and the common electrode (26) may be made of indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowire (Ag nanowire), carbon nanotube (CNT), graphene, or PEDOT (3,4-ethylenedioxythiophene). A thin film transistor (TFT) (24) may be provided on the inside of the second transparent substrate (22).

[0120] 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).

[0121] 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.

[0122] 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).

[0123] 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).

[0124] 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 the alignment layer. As a result, the optical properties of the liquid crystal layer (25) can vary depending on the presence or absence of an electric field passing through the liquid crystal layer (25).

[0125] The structure of the display panel (20) described above with reference to FIG. 3 is merely an example of a structure that the display panel (20) of the display device (1) according to one embodiment of the present disclosure may have, and the present disclosure is not limited thereto.

[0126] FIG. 4 is an enlarged view of a light source device and a reflective sheet included in a display device according to one embodiment of the present disclosure.

[0127] Referring to FIG. 4, a display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (300) and a light source substrate (400) on which the light sources (300) are mounted. The plurality of light sources (300) and the light source substrate (400) may constitute a light source device (200) of a backlight unit (100).

[0128] In FIG. 4, one light source (300) among the plurality of light sources (300) included in the light source device (200) is illustrated in detail, and the description of the structure and function of the light source (300) described below with reference to FIG. 4 can be commonly applied to each of the plurality of light sources (300).

[0129] The light source (300) may be configured to irradiate light. The light source (300) may be configured to irradiate light toward the display panel (20). The light source (300) may include a device that, when supplied with power, can emit monochromatic light (light of a specific wavelength, for example, blue light) or white light (for example, light mixed with red light, green light, and blue light) in various directions. For example, the light source (300) may include a light emitting diode (LED).

[0130] The light source substrate (400) can support a plurality of light sources (300). The light source substrate (400) can supply power to each of the plurality of light sources (300) for emitting light.

[0131] The light source substrate (400) may be composed of a printed circuit board (PCB) on which a plurality of light sources (300) are mounted and a conductive power supply line for supplying power to the light sources (300) is formed.

[0132] The light source (300) may be provided on the front surface of the light source substrate (400). The light source (300) may be mounted on the front surface of the light source substrate (400). The front surface of the light source substrate (400) as referred to here may refer to a side of the light source substrate (400) facing the display panel (20). That is, the light source (300) may be mounted on the light source substrate (400) so as to face forward and be arranged to irradiate light forward.

[0133] The reflective sheet (120) may be arranged in front of the light source substrate (400). As described above, the reflective sheet (120) may be coupled to the front surface of the light source substrate (400). 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 (300) of the light source device (200). As illustrated in FIG. 4, the light source (300) 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 (300) and the light source substrate (400) may be exposed toward the front of the reflective sheet (120) through the through holes (120a). With this configuration, the light source (300) may emit light from the front of the reflective sheet (120).

[0134] The reflective sheet (120) can reflect light emitted from the light source (300) toward the reflective sheet (120) toward the diffuser plate (130).

[0135] The process in which light emitted by multiple light sources (300) or reflected by a reflective sheet (120) travels toward the display panel (20) is as described above.

[0136] Below, the detailed structure of the light source (300) and the light source substrate (400) is described as an example.

[0137] The light source (300) may include a light emitting diode (300a). The light emitting diode (300a) may include a P-type semiconductor and an N-type semiconductor for emitting light through the recombination of holes and electrons. In addition, the light emitting diode (300a) may be provided with a pair of electrodes for supplying holes and electrons to the P-type semiconductor and the N-type semiconductor, respectively.

[0138] The light-emitting diode (300a) may be configured to convert electrical energy into optical energy. The light-emitting diode (300a) may emit light having a maximum intensity at a predetermined wavelength based on the supplied power. For example, the light-emitting diode (300a) may emit blue light having a peak value at a wavelength representing blue (e.g., a wavelength between 430 nm and 495 nm).

[0139] 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 (300a). For example, such a multilayer reflective structure may be configured as a distributed Bragg reflector (DBR).

[0140] For example, the light emitting diode (300a) may be directly attached to the light source substrate (400) in a chip-on-board (COB) manner. In other words, the light source (300) may include a light emitting diode (300a) in which a light emitting diode chip or light emitting diode die is directly attached to the light source substrate (400) without separate packaging.

[0141] The light source device (200) can realize miniaturization of the light source (300) by being manufactured by attaching a flip-chip type light-emitting diode (300a) to a light source substrate (400) in a chip-on-board manner.

[0142] The light source substrate (400) may include a substrate line (500). The substrate line (500) may be configured to transmit electrical signals and / or power from the printed circuit board assembly (50) to the light source (300). The substrate line (500) may be configured to supply power to the light source (300). The substrate line (500) may be configured to supply a driving current based on a driving voltage and / or a dimming signal to the light source (300). For example, the substrate line (500) may be configured to supply power to a light emitting diode (300a) of a flip chip type.

[0143] For example, the light source substrate (400) can be formed by alternately stacking a non-conductive insulation layer and a conductive conduction layer.

[0144] A conductive layer of the light source substrate (400) 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 substrate line (500) may be implemented by lines or patterns formed on the conductive layer of the light source substrate (400).

[0145] The dielectric of the insulating layer of the light source substrate (400) can insulate between lines or patterns of the conductive layer. The insulating layer can include a dielectric for electrical insulation.

[0146] For example, a protection layer may be provided on the outer surface of the light source substrate (400) to prevent or suppress damage to the light source substrate (400) due to external impact, damage due to chemical action (e.g., corrosion, etc.), and / or damage due to optical action. For example, the protection layer of the light source substrate (400) may include a photo solder resist (PSR).

[0147] The substrate line (500) can be covered by a protective layer of the light source substrate (400) to prevent it from being exposed to the outside.

[0148] For example, the light source substrate (400) may include a power supply pad (440) electrically connected to a substrate line (500) to supply power to a flip-chip type light emitting diode (300a). The substrate line (500) may be electrically connected to the light emitting diode (300a) via the power supply pad (440).

[0149] For example, a window may be formed in the protective layer of the light source substrate (1230) so that a portion of the substrate line (500) is exposed to the outside. The power supply pad (440) may be electrically connected to a portion of the substrate line (500) exposed to the outside of the light source substrate (400).

[0150] 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 (300a) and the power supply pad (440).

[0151] The light source (300) may include an optical dome (300b). The optical dome (300b) may cover the light emitting diode (300a). The optical dome (300b) may prevent or suppress damage to the light emitting diode (300a) due to external mechanical action and / or damage to the light emitting diode (300a) due to chemical action.

[0152] The optical dome (300b) 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 (300b) may be, for example, a curved or semicircular shape.

[0153] The optical dome (300b) may be composed of silicone or epoxy resin. For example, molten silicone or epoxy resin may be ejected onto the light-emitting diode (300a) through a nozzle or the like, and the ejected silicone or epoxy resin may then be hardened to form the optical dome (300b).

[0154] The optical dome (300b) may be optically transparent or translucent. Light emitted from the light-emitting diode (300a) may pass through the optical dome (300b) and be emitted to the outside.

[0155] At this time, for example, a dome-shaped optical dome (300b) can refract light like a lens. For example, light emitted from a light-emitting diode (300a) can be dispersed by being refracted by the optical dome (300b).

[0156] The detailed structure of the light source device (200), such as the light source (300) and the light source substrate (400), described above with reference to FIG. 4 is only an example of the structure that the light source device (200) of the display device (1) according to one embodiment of the present disclosure may have, and the present disclosure is not limited thereto.

[0157] FIG. 5 is a drawing illustrating a front surface of a light source substrate included in a display device according to one embodiment of the present disclosure. FIG. 6 is a drawing illustrating a back surface of a light source substrate included in a display device according to one embodiment of the present disclosure. FIG. 7 is a drawing illustrating an enlarged portion of a plurality of substrate bars of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0158] Referring to FIGS. 5 to 7, a display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (300) and a light source device (200) in which the plurality of light sources (300) are mounted. As illustrated in FIG. 2, a display device (1) according to one embodiment may include a plurality of light source devices (200), but for convenience, the structure of one light source device (200) will be described in detail below with reference to FIGS. 5 to 7.

[0159] The light source substrate (400) can be placed in the front (+X direction) of the bottom chassis (15). The light source substrate (400) can be mounted on the bottom chassis (15). The light source substrate (400) can be fixed to the bottom chassis (15) and supported by the bottom chassis (15).

[0160] According to one embodiment, a plurality of light sources (300) and electronic components for driving the light sources (300) are mounted on the front surface of the light source substrate (400), and a substrate line (500) is arranged, and electronic components may not be mounted on the back surface of the light source substrate (400) or the substrate line (500) may not be arranged. That is, the light source substrate (400) may be a single-sided mounting type circuit board in which electronic components and the substrate line (500) are arranged on only one surface. The light source substrate (400) may be a single-sided mounting type circuit board including a conductive metal material. When having these characteristics, the cost of the light source substrate (400) can be reduced.

[0161] The light source substrate (400) may include a plurality of substrate bars (420).

[0162] The substrate bar (420) may be a configuration that forms at least a portion of the light source substrate (400) described above and may include a printed circuit board in the shape of a bar extending in one direction.

[0163] At least a portion of a plurality of light sources (300) may be mounted on each of the plurality of substrate bars (420). At least a portion of the plurality of light sources (300) may be mounted on the front surface of the plurality of substrate bars (420). Here, the front surface of the plurality of substrate bars (420) means one surface of the plurality of substrate bars (420) in the direction in which the plurality of substrate bars (420) face the display panel (20).

[0164] A plurality of substrate bars (420) may be composed of a printed circuit board on which a light source (300) is mounted and on which the aforementioned substrate line (500) is provided.

[0165] A plurality of substrate bars (420) may be arranged along the first direction (Z). For example, the plurality of substrate bars (420) may be arranged approximately along the vertical direction of the display device (1).

[0166] A plurality of substrate bars (420) may be arranged to be spaced apart from each other. The plurality of substrate bars (420) 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 (420) 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 (420) may be arranged to be parallel at positions spaced apart from each other.

[0167] Each of the plurality of substrate bars (420) may be formed to have approximately a bar shape. Specifically, each of the plurality of substrate bars (420) may have a width in a first direction (Z) and may extend long in a second direction (Y) different from the first direction (Z). That is, each of the plurality of substrate bars (420) may have a shape in which a length in the second direction (Y) is longer than a width in the first direction (Z). The second direction (Y) may also be referred to as a bar direction, as it is a direction in which each of the plurality of substrate bars (420) extends.

[0168] For example, the width direction of each of the plurality of substrate bars (420) may be approximately parallel to the vertical direction (e.g., up-down direction) of the display device (1). For example, the direction in which each of the plurality of substrate bars (420) extends may be approximately parallel to the horizontal direction (e.g., left-right direction) of the display device (1).

[0169] For example, the direction in which each of the plurality of substrate bars (420) 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 (420) may be parallel to the short side direction of the display device (1). In other words, the plurality of substrate bars (420) may be arranged along the short side direction of the display device (1) and may each extend along the long side direction of the display device (1).

[0170] The direction in which the plurality of substrate bars (420) are arranged spaced apart from each other may be parallel to the respective width directions. In other words, the plurality of substrate bars (420) may be arranged spaced apart from each other along the first direction (Z), which is the respective width direction.

[0171] Each of the plurality of substrate bars (420) may extend in a direction different from the direction in which the plurality of substrate bars (420) are spaced apart from each other. According to one embodiment, each of the plurality of substrate bars (420) may extend in a direction (Y direction) orthogonal to the direction in which the plurality of substrate bars (420) 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.

[0172] In contrast, the direction in which the plurality of substrate bars (420) are arranged spaced apart from each other and the direction in which each of the plurality of substrate bars (420) extends may have a predetermined angle with each other, but the angle may not be exactly perpendicular.

[0173] For example, a plurality of substrate bars (420) 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 (420) among the plurality of substrate bars (420) in the first direction (Z) may all be approximately the same. As a result, the uniformity of the brightness of the display device (1) may be improved.

[0174] For example, the plurality of substrate bars (420) may be formed to have shapes that correspond to each other. For example, the plurality of substrate bars (420) may have widths that correspond to each other in the first direction (Z direction). For example, the plurality of substrate bars (420) may have lengths that correspond to each other extending in the second direction (Y). For example, the plurality of substrate bars (420) may be formed to have sizes that correspond to each other.

[0175] Each of the plurality of substrate bars (420) can be mounted on the bottom chassis (15). As each of the plurality of substrate bars (420) is mounted on the bottom chassis (15) and maintains a fixed position, the plurality of light sources (300) mounted on the plurality of substrate bars (420) can be stably positioned at each designed position.

[0176] A reflective sheet (120) may be attached to the front surface of each of the plurality of substrate bars (420).

[0177] The light source substrate (400) may include a substrate body (410). The substrate body (410) may be a configuration that forms a portion of the light source substrate (400) described above and may include a printed circuit board.

[0178] A plurality of substrate bars (420) may be connected to a substrate body (410). The plurality of substrate bars (420) may be supported by the substrate body (410). For example, the plurality of substrate bars (420) may be connected to one side of the substrate body (410).

[0179] A plurality of substrate bars (420) may extend from the substrate body (410). For example, each of the plurality of substrate bars (420) may extend from the substrate body (410) in a second direction (Y). For example, each of the plurality of substrate bars (420) may extend from one side of the substrate body (410) in the second direction (Y). Each of the plurality of substrate bars (420) may extend from the substrate body (410) in the bar direction.

[0180] The substrate body (410) may extend along the first direction (Z). For example, the substrate body (410) may have a shape in which the length in the first direction (Z) is longer than the width in the second direction (Y). As the substrate body (410) extends along the direction in which the plurality of substrate bars (420) are arranged, the substrate body (410) may have a structure in which it is connected to a greater number of substrate bars (420). In addition, in this case, as the plurality of substrate bars (420) extend from one side in the second direction (Y), which is the width direction (e.g., the direction in which the length is relatively short) of the substrate body (410), each of the substrate bars (420) may have a shape in which it extends longer from the substrate body (410).

[0181] The substrate body (410) can be mounted on the bottom chassis (15). As the substrate body (410) is mounted on the bottom chassis (15) and maintains a fixed position, a plurality of light sources (300) mounted on the substrate body (410) can be stably positioned at their respective designed positions. In addition, as the substrate body (410) is mounted on the bottom chassis (15), a plurality of substrate bars (420) connected to the substrate body (410) can be more stably supported by the substrate body (410).

[0182] For example, some of the plurality of light sources (300) may be mounted on the substrate body (410). Some of the plurality of light sources (300) may be mounted on the front surface of the substrate body (410). Here, the front surface of the substrate body (410) means one surface of the substrate body (410) facing the display panel (20).

[0183] The substrate body (410) may be composed of a printed circuit board on which a light source (300) is mounted and the aforementioned substrate line (500) is provided.

[0184] A reflective sheet (120) may be attached to the front surface of the substrate body (410). For example, an integral reflective sheet (120) may be attached to the front surfaces of the substrate body (410) and the plurality of substrate bars (420). 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 (410) and the plurality of substrate bars (420) 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 (410) and the plurality of substrate bars (420).

[0185] According to one embodiment, the substrate body (410) and the plurality of substrate bars (420) may be formed integrally with each other. In other words, the substrate body (410) and the plurality of substrate bars (420) may be connected to each other to form an integral light source substrate (400). The light source substrate (400) may be formed as an integral printed circuit board including the substrate body (410) and the plurality of substrate bars (420).

[0186] In FIG. 5, an embodiment is illustrated in which each of the plurality of substrate bars (420) extends in the right direction (+Y direction) from the substrate body (410), but the present invention is not limited thereto, and for example, the plurality of substrate bars (420) may extend in the left direction (-Y direction) from the substrate body (410).

[0187] In addition, although FIG. 5 illustrates an embodiment in which the substrate body (410) 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 (410) may extend in the horizontal direction (Y direction).

[0188] In addition, although FIG. 5 illustrates an embodiment in which each of the plurality of substrate bars (420) extends in the horizontal direction (Y direction) from one side of the substrate body (410) in the horizontal direction (Y direction), the present invention is not limited thereto, and for example, each of the plurality of substrate bars (420) may extend in the vertical direction (Z direction) from one side of the substrate body (410) in the vertical direction (Z direction). In this case, the plurality of substrate bars (420) may be arranged to be spaced apart from each other in the horizontal direction (Y direction).

[0189] In addition, unlike what has been described above, the first direction, which is the width direction of each of the plurality of substrate bars (420), or the first direction in which the plurality of substrate bars (420) are arranged to be spaced apart from each other, or the first direction in which the substrate body (410) extends, or the second direction in which each of the plurality of substrate bars (420) extends, may not be parallel to either the vertical direction (Z direction) or the horizontal direction (Y direction) of the display device (1).

[0190] 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).

[0191] According to one embodiment, each of the plurality of substrate bars (420) may include a central extension portion (421) extending in one direction and a protrusion portion (422, 423) protruding from the central extension portion (421). The central extension portion (421) and the protrusion portions (422, 423) may each constitute a portion of the light source substrate (400) as a portion of the substrate bar (420).

[0192] The central extension (421) may extend in the second direction (Y direction). The width direction of the central extension (421) may be parallel to the first direction (Z direction). The central extension (421) may have a shape in which the extension length in the second direction (Y direction) is longer than the width in the first direction (Z direction).

[0193] A central extension (421) may be provided at the center of the substrate bar (420). The central extension (421) may include an area that passes through the center of the substrate bar (420) and extends in the second direction (Y direction).

[0194] For example, as illustrated in FIG. 7, the central extension (421) may include an area having a roughly rectangular bar shape.

[0195] The substrate bar (420) may include a plurality of first protrusions (422) protruding from one side of the central extension (421). Each of the plurality of first protrusions (422) may protrude from one side of the central extension (421) in a first direction (Z direction). Each of the plurality of first protrusions (422) may protrude from one side of the central extension (421) toward the outside of the central extension (421). Each of the plurality of first protrusions (422) may extend from the central extension (421) in the first direction (Z direction). For example, each of the plurality of first protrusions (422) may extend upward from an upper side of the central extension (421).

[0196] For example, the first protrusion (422) can be formed integrally with the central extension (421).

[0197] A plurality of first protrusions (422) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first protrusions (422) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0198] For example, the plurality of first protrusions (422) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of first protrusions (422) that protrude in the first direction (Z direction) from the central extension (421) may correspond to each other.

[0199] The plurality of light sources (300) may include a plurality of first-side light sources (310) adjacent to one side of the substrate bar (420) in the first direction (Z). Each of the plurality of first-side light sources (310) may be disposed on a first protrusion (422). Each of the plurality of first-side light sources (310) may be mounted on the first protrusion (422). For example, one first-side light source (310) may be mounted on one first protrusion (422), but is not limited thereto. The plurality of first-side light sources (310) may be disposed at a position spaced apart from the central extension (421) in the first direction (Z direction). As illustrated in FIG. 7, the plurality of first-side light sources (310) may be disposed to be deflected upward from the central extension (421).

[0200] A plurality of first-side light sources (310) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of first-side light sources (310) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0201] The substrate bar (420) may include a plurality of second protrusions (423) protruding from the other side of the central extension (421). Each of the plurality of second protrusions (423) may protrude from the other side of the central extension (421) in the first direction (Z direction). The other side of the central extension (421) as referred to here means a side different from one side of the central extension (421) from which the first protrusions (422) protrude. For example, the plurality of second protrusions (423) may protrude from the other side of the central extension (421) opposite to one side of the central extension (421) from which the plurality of first protrusions (422) protrude, in a direction opposite to the protrusion direction of the plurality of first protrusions (422). Each of the plurality of second protrusions (423) may protrude from the other side of the central extension (421) toward the outside of the central extension (421). Each of the plurality of second protrusions (423) may extend in the first direction (Z direction) from the central extension (421). For example, each of the plurality of second protrusions (423) may extend downward from the lower side of the central extension (421).

[0202] For example, the second protrusion (423) can be formed integrally with the central extension (421).

[0203] A plurality of second protrusions (423) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second protrusions (423) may be arranged relative to each other at equal intervals along the second direction (Y direction).

[0204] For example, the plurality of second protrusions (423) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of second protrusions (423) that protrude in the first direction (Z direction) from the central extension (421) may correspond to each other.

[0205] For example, the length by which each of the plurality of first protrusions (422) protrudes from the central extension (421) and the length by which each of the plurality of second protrusions (423) protrudes from the central extension (421) may be approximately equal to each other.

[0206] The plurality of light sources (300) may include a plurality of second-side light sources (320) adjacent to the opposite side of the first-side light sources (310) of the substrate bar (420). Each of the plurality of second-side light sources (320) may be disposed on a second protrusion (423). Each of the plurality of second-side light sources (320) may be mounted on the second protrusion (423). Some of the plurality of light sources (300) mounted on the substrate bar (420) may be mounted on the plurality of second protrusions (423). Hereinafter, the light source mounted on each of the plurality of second protrusions (423) is referred to as a second-side light source (320). For example, one second-side light source (320) may be mounted on one second protrusion (423), but is not limited thereto.

[0207] A plurality of second side light sources (320) may be arranged at positions spaced apart from the central extension (421) in the first direction (Z direction). As illustrated in FIG. 7, the plurality of second side light sources (320) may be arranged to be deflected downward from the central extension (421).

[0208] A plurality of second side light sources (320) may be arranged relative to each other along the second direction (Y direction). For example, a plurality of second side light sources (320) may be arranged at equal intervals relative to each other along the second direction (Y direction).

[0209] Here, some areas of the central extension (421) from which the plurality of first protrusions (422) protrude and other areas of the central extension (421) from which the plurality of second protrusions (423) extend may be arranged to intersect along the second direction (Y direction). In other words, the first protrusions (422) and the second protrusions (423) may be arranged to intersect each other. In one substrate bar (420), the plurality of first protrusions (422) and the plurality of second protrusions (423) may be arranged so as not to be parallel to each other in the first direction (Z).

[0210] With this configuration, the first side light source (310) and the second side light source (320) can be arranged to intersect each other along the second direction (Y direction). In one substrate bar (420), the plurality of light sources (300) can be arranged such that the first side light source (310) is arranged on one side in the first direction (Z) and the second side light source (320) is arranged on the other side so as to intersect each other along the second direction (Y direction), thereby improving the uniformity of brightness by the plurality of light sources (300). In other words, one substrate bar (420) can have a shape extending in a zigzag shape as a whole, and the plurality of light sources (300) in one substrate bar (420) can be arranged in a zigzag shape.

[0211] As the plurality of light sources (300) are arranged as described above in each substrate bar (420), the distance between adjacent light sources (300) in a pair of adjacent substrate bars (420) among the plurality of substrate bars (420) can be reduced, and the brightness and uniformity of brightness of the display device (1) can be improved.

[0212] The shape of the substrate bar (420) described above is merely an example of the various shapes that the substrate bar (420) of the light source substrate (400) included in the display device (1) according to one embodiment may have, and in various embodiments, the light source substrate (400) may include substrate bars (420) of various shapes.

[0213] The light source device (200) may include a connector (600). The connector (600) may be mounted on a light source substrate (400). The connector (600) may be electrically connected to a plurality of light sources (300) mounted on the light source substrate (400). The connector (600) may be connected to a substrate line (500) provided on the light source substrate (400). The connector (600) may be connected to various electronic components mounted on the light source substrate (400), such as a plurality of light sources (300), through the substrate line (500). In addition, the connector (600) may be provided to be electrically connected to a driving board (53) via a cable (C, see FIG. 6). In other words, the light source device (200) may be electrically connected to the driving board (53) via the connector (600). Accordingly, the connector (600) can transmit electrical signals and / or power transmitted from the driving board (53) to various electronic components mounted on the light source board (400), such as a plurality of light sources (300), through the board line (500). The plurality of light sources (300) can receive driving voltage and / or current from the driving board (53) through the connector (600) and the board line (500) connected thereto.

[0214] According to one embodiment, the connector (600) may be mounted on the substrate body (410). The connector (600) may be connected to the cable (C) on the back side of the substrate body (410). The back side of the substrate body (410) as referred to herein means a side of the substrate body (410) that faces the bottom chassis (15). In addition, the back side of the substrate body (410) means a side opposite to the front side of the substrate body (410) that faces the display panel (20) and on which a plurality of light sources (300) are mounted.

[0215] According to one embodiment, the connector (600) may be mounted through the substrate body (410). A portion of the connector (600) may be positioned on the front surface of the substrate body (410), and another portion of the connector (600) may be positioned on the back surface of the substrate body (410).

[0216] According to one embodiment, the connector (600) may be formed to have a long side (601) and a short side (602) shorter than the long side (601). The long side (601) and the short side (602) of the connector (600) may be perpendicular to each other, but are not limited thereto.

[0217] As illustrated in FIG. 5, in one embodiment, the long side (601) of the connector (600) may be parallel to the first direction (Z). That is, the connector (600) may be arranged such that its long side (601) is parallel to the first direction (Z). In other words, the connector (600) may be arranged such that its length in the first direction (Z) is longer than its length in the second direction (Y), and may extend long in the first direction (Z).

[0218] In a case where the short side (602) of the connector (600) is parallel to the first direction (Z), the connector (600) may be arranged so that the long side (601) is parallel to the second direction (Y), and accordingly, the substrate body (410) on which the connector (600) is mounted may be required to have a longer length in the second direction (Y) compared to the case illustrated in FIG. 5. In this case, the amount of material required to manufacture the substrate body (410) may increase, and the manufacturing cost of the product may increase.

[0219] However, as illustrated in FIG. 5, since the long side (601) of the connector (600) is parallel to the first direction (Z), the amount of material required to manufacture the substrate body (410) can be reduced, and the manufacturing cost of the product can be reduced.

[0220] For example, a cable (C) connected to a driving board (53) may be arranged to be electrically connected to a connector (600) through a connection terminal provided on a long side (601) of the connector (600). In addition, for example, a substrate line (500) of a light source substrate (400) may be arranged to be electrically connected to a connector (600) through a connection terminal provided on a long side (601) of the connector (600).

[0221] The light source device (200) may include a plurality of driving circuits (700) mounted on a light source substrate (400). The plurality of driving circuits (700) may be arranged to control at least some of the light sources (300) among the plurality of light sources (300) mounted on the same light source substrate (400). The plurality of driving circuits (700) may be arranged to control driving current supplied to at least some of the light sources (300) among the plurality of light sources (300).

[0222] A plurality of driving circuits (700) may be mounted on a light source substrate (400) and electrically connected to a substrate line (500). A plurality of driving circuits (700) may be electrically connected to a driving board (53) through a configuration such as a substrate line (500) and a connector (600).

[0223] According to one embodiment, the display device (1) can perform local dimming, which varies the brightness of light for each area of ​​the light source device (200) in conjunction with the output image, so as to improve power consumption while increasing the contrast ratio. For example, the display device (1) can reduce the brightness of light of the light source (300) corresponding to the dark portion of the image to make the dark portion of the image darker, and can increase the brightness of light of the light source (300) corresponding to the bright portion of the image to make the bright portion of the image brighter. As a result, the contrast ratio or contrast ratio of the image can be improved.

[0224] To implement a local dimming function, a plurality of light sources (300) may form a plurality of dimming blocks (B, see FIG. 8, FIG. 10, etc.) each including a predetermined number of light sources (300). The plurality of light sources (300) may be classified into a plurality of dimming blocks (B).

[0225] The driving board (53) can control the current supplied to each dimming block (B) according to the input image. The driving board (53) can efficiently improve the contrast ratio by lowering the current supplied to the dimming block (B) corresponding to the dark area of ​​the input image and increasing the current supplied to the dimming block (B) corresponding to the bright area of ​​the input image. For example, the same driving current can be supplied to the light sources (300) belonging to the same dimming block (B), and the light sources (300) belonging to the same dimming block (B) can emit light of the same brightness. For example, different driving currents can be supplied to the light sources (300) belonging to different dimming blocks (B) according to the dimming data, and the light sources (300) belonging to different dimming blocks (B) can emit light of different brightness.

[0226] A plurality of driving circuits (700) may be provided to output control signals to control a plurality of dimming blocks (B). The plurality of driving circuits (700) may be provided to control driving currents supplied to light sources (300) included in the plurality of dimming blocks (B). Each driving circuit (700) may be provided to control driving currents included in one or more dimming blocks (B).

[0227] For example, the number of multiple driving circuits (700) mounted on one light source substrate (400) may correspond to the number of substrate bars (420). In this case, one driving circuit (700) may control the driving current supplied to each of the dimming blocks (B) arranged on one substrate bar (420).

[0228] For example, the plurality of driving circuits (700) may include an integrated circuit chip for controlling driving current applied to at least one dimming block (B), such as a pixel IC (Integrated Circuit) or an AM IC (Active Matrix Integrated Circuit).

[0229] For example, a plurality of driving circuits (700) may be mounted on the front surface of the substrate body (410). The front surface of the substrate body (410) as referred to here means one side of the substrate body (410) facing the display panel (20).

[0230] FIG. 8 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0231] Referring to FIG. 8, a light source device (200) of a display device (1) according to one embodiment of the present disclosure may include a plurality of dimming blocks (B). Each of the plurality of dimming blocks (B) may include a plurality of light sources (300).

[0232] The light sources (300) included in each of the plurality of dimming blocks (B) may be mounted on the same substrate bar (420) or on a part of the substrate body (410) adjacent to the substrate bar (420). According to one embodiment, the plurality of dimming blocks (B) may be divided into a first dimming block (B1), a second dimming block (B2), a third dimming block (B3), a fourth dimming block (B4), etc. from the side adjacent to the substrate body (410) to the opposite side. The number of dimming blocks (B) illustrated in FIG. 8 is merely an example, and in various embodiments, the light source device (200) may include various numbers of dimming blocks (B).

[0233] The light sources (300) included in each of the plurality of dimming blocks (B) may include a plurality of first-side light sources (310) adjacent to a first side (e.g., +Z direction side) in the first direction (Z) of the substrate bar (420), and a plurality of second-side light sources (320) adjacent to a second side (e.g., -Z direction side) in the first direction (Z) of the substrate bar (420).

[0234] According to one embodiment, each of the plurality of dimming blocks (B) may include six light sources (300) including a first light source (301), a second light source (302), a third light source (303), a fourth light source (304), a fifth light source (305), and a sixth light source (306). The first light source (301), the third light source (303), and the fifth light source (305) may be arranged parallel to each other in the second direction (Y). The second light source (302), the fourth light source (304), and the sixth light source (306) may be arranged parallel to each other in the second direction (Y). Among the first light source (301), the third light source (303), and the fifth light source (305), the distance in the second direction (Y) from the substrate body (410) may increase in the order of the first light source (301), the third light source (303), and the fifth light source (305). Among the second light source (302), the fourth light source (304), and the sixth light source (306), the distance in the second direction (Y) from the substrate body (410) may increase in the order of the second light source (302), the fourth light source (304), and the sixth light source (306). The first light source (301), the third light source (303), and the fifth light source (305) may be first-side light sources (310). The second light source (302), the fourth light source (304), and the sixth light source (306) may be second side light sources (320).

[0235] The number of light sources (300) included in each dimming block (B) illustrated in FIG. 8 is only an example, and in various embodiments, each dimming block (B) may include a different number of light sources (300).

[0236] FIG. 9 is a block diagram illustrating some components of a display device according to one embodiment of the present disclosure.

[0237] Referring to FIG. 9, a display device (1) according to one embodiment of the present disclosure may include a content receiving unit (80), an image processing unit (90), a panel driver (30), a display panel (20), a dimming driver (70), and a light source device (200).

[0238] 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.

[0239] 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.

[0240] 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.

[0241] 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).

[0242] 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.

[0243] 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.

[0244] 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).

[0245] 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 (70), respectively.

[0246] 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 (200), respectively.

[0247] 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).

[0248] 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.

[0249] 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.

[0250] The panel driver (30) may include, for example, a timing controller, a data driver, a scan driver, etc.

[0251] 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.

[0252] 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.

[0253] 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.

[0254] 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).

[0255] In one embodiment, the dimming data may include information regarding the intensity of light emitted by each of the plurality of light sources (300) (or the plurality of dimming blocks (B)) included in the light source device (200). The dimming data may be provided to the light source device (200) via the dimming driver (70).

[0256] The image processing unit (90) can obtain dimming data from image data. The image processing unit (90) can convert the 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 (B), and each of the plurality of image blocks can correspond to a plurality of dimming blocks (B).

[0257] The image processing unit (90) can obtain the luminance values ​​of the plurality of dimming blocks (B) 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 (B). For example, the image processing unit (90) can obtain the luminance value of each of the plurality of dimming blocks (B) based on the maximum value among the luminance values ​​of the pixels included in each of the image blocks.

[0258] 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.

[0259] 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 (B) 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 i-th image block as the luminance value of the i-th dimming block, and can set the maximum value among the luminance values ​​of the pixels included in the j-th image block as the luminance value of the j-th dimming block.

[0260] The image processing unit (90) can generate dimming data by combining the luminance values ​​of a plurality of dimming blocks (B).

[0261] The dimming driver (70) can receive dimming data from the image processing unit (90). The dimming driver (70) can drive the light source device (200) according to the dimming data. Here, the dimming data can include information about the brightness of each of the plurality of dimming blocks (B) or information about the brightness of the light sources included in each of the plurality of dimming blocks (B).

[0262] The dimming driver (70) may include, for example, a timing controller, a data driver, a scan driver, etc.

[0263] The dimming driver (70) can convert dimming data, which is a digital voltage signal, into an analog driving current.

[0264] The dimming driver (70) can sequentially provide an analog dimming signal to the driving circuits (700) corresponding to each of the dimming blocks (B), for example, in an active matrix manner.

[0265] A plurality of dimming blocks (B) can be divided into a plurality of groups. For example, three dimming blocks (B) can form one group. Dimming blocks (B) belonging to the same group can be supplied with driving current simultaneously, and dimming blocks (B) belonging to different groups can be supplied with driving current sequentially at different times. The dimming driver (70) can activate the dimming blocks (B) belonging to any one of the plurality of groups and provide an analog dimming signal to the activated dimming blocks (B). Thereafter, the dimming driver (70) can activate the dimming blocks (B) belonging to another group and provide an analog dimming signal to the activated dimming blocks (B).

[0266] The dimming driver (70) can activate dimming blocks (B) belonging to one group and provide an analog dimming signal to the activated dimming blocks (B). Thereafter, the dimming driver (70) can activate inputs of dimming blocks (B) belonging to another row and provide an analog dimming signal to the dimming blocks (B) whose inputs are activated.

[0267] To activate dimming blocks (B) belonging to any one of the plurality of groups, the dimming driver (70) can transmit a driving signal to the driving circuit (700). The driving signal may be a signal for supplying power to the driving circuit (700).

[0268] According to various embodiments, the driving signal may be transmitted directly from the dimming driver (70) to each of the plurality of dimming blocks (B), or may be transmitted from the driving circuit (700) to each of the plurality of dimming blocks (B).

[0269] The driving circuit of each of the dimming blocks (B) can provide an analog driving current corresponding to an analog dimming signal to the light sources (300). The light sources (300) can emit light by the analog driving current. Depending on the dimming data, the light sources belonging to the same dimming block (B) can emit light of the same intensity. Additionally, depending on the dimming data, the light sources belonging to different dimming blocks (B) can emit light of different intensities.

[0270] FIG. 10 is a drawing illustrating an example of a connection structure of a driving circuit and a dimming block of a light source device included in a display device according to one embodiment of the present disclosure.

[0271] Referring to FIG. 10, in a display device (1) according to one embodiment of the present disclosure, each of a plurality of dimming blocks (B) may include a plurality of light sources (300) that are connected in series to each other. For example, the light sources (300) included in each of the plurality of dimming blocks (B) may be electrically connected by a substrate line (500). The substrate line (500) may include a light source inter-line (520) that connects the light sources (300) included in each of the plurality of dimming blocks (B) to each other. Since the light sources (300) belonging to the same dimming block (B) are connected in series to each other by the light source inter-line (520), the same driving current may be supplied to the light sources (300) belonging to the same dimming block (B), and thus the light sources (300) belonging to the same dimming block (B) may emit light of the same brightness.

[0272] In this way, since the light sources (300) belonging to the dimming block (B) are connected in series with each other, the light sources (300) included in the dimming block (B) operate as one unit and can form the dimming block (B) as one unit. Therefore, hereinafter, “supplying a driving current to the dimming block” can be interpreted as having the same meaning as “supplying a driving current to the light sources included in the dimming block.” In addition, “applying a driving voltage to the dimming block” can be interpreted as having the same meaning as “applying a driving voltage to the light sources included in the dimming block.”

[0273] The substrate line (500) may include a dimming block line (510) connected to each of a plurality of dimming blocks (B). The dimming block line (510) may be connected to one of the light sources (300) included in each of the plurality of dimming blocks (B). For example, the dimming block line (510) may connect one of the light sources (300) included in each of the plurality of dimming blocks (B) to a dimming driver (70). For example, the dimming block line (510) may connect one of the light sources (300) included in each of the plurality of dimming blocks (B) to a connector (600) mounted on the light source substrate (400). For example, a dimming block line (510) can connect one of the light sources (300) included in each of a plurality of dimming blocks (B) to a driving circuit (700) mounted on a light source substrate (400).

[0274] Each of the multiple dimming blocks (B) is driven by a driving voltage (V) through a substrate line (500). LED ) can be supplied. Each of the plurality of dimming blocks (B) is supplied with a driving voltage (V) through a dimming block line (510). LED ) can be supplied. For example, the dimming block line (510) supplies a driving voltage (V) to each of the plurality of dimming blocks (B). LED ) may include a voltage line (511) provided to apply a driving voltage (V). The voltage line (511) may be connected to one of the light sources (300) included in each of the plurality of dimming blocks (B). For example, a driving voltage (V) applied to the plurality of dimming blocks (B) through the voltage line (511) LED ) can all have the same century.

[0275] Each of the plurality of dimming blocks (B) may be connected to a driving circuit (700) through a substrate line (500). Each of the plurality of dimming blocks (B) may be connected to a driving circuit (700) through a dimming block line (510). For example, the dimming block line (510) may include a control line (512) that connects each of the plurality of dimming blocks (B) and the driving circuit (700). The driving circuit (700) may control a driving current flowing to each of the plurality of dimming blocks (B) through the control line (512).

[0276] The driving circuit (700) can receive an analog dimming signal from the dimming driver (70) while it is activated by the dimming driver (70) and store the received analog dimming signal. In addition, while it is deactivated, the plurality of driving circuits (700) can supply driving current corresponding to the stored analog dimming signal to the plurality of light sources (300).

[0277] The driving circuit (700) supplies a driving voltage (V) to a plurality of dimming blocks (B). LED ) is enabled, the driving current supplied to each of the plurality of dimming blocks (B) can be controlled through the control line (512).

[0278] A plurality of driving circuits (700) may be connected to signal lines that provide input signals to the plurality of driving circuits (700). The signal lines may include a data line (D) that provides an analog dimming signal to the plurality of driving circuits (700), a scan line (S) that provides a scan signal to the plurality of driving circuits (700), and / or a clock line (CLK) that provides a clock signal, which is a timing signal, to the plurality of driving circuits (700).

[0279] The plurality of driving circuits (700) may include circuits of various topologies to implement active matrix driving.

[0280] For example, each of the plurality of driving circuits (700) may include a circuit of a 1C2T (one capacitor two transistor) topology. However, the circuit structure of the driving circuit (700) is not limited thereto. For example, the driving circuit (700) may include a circuit of a 3T1C topology with an additional transistor for compensating the body effect of the driving transistor.

[0281] The driving circuit (700) may be provided as a single chip in which the driving circuit is integrated, for example. In other words, the driving circuit may be integrated into one semiconductor chip.

[0282] The dimming driver (70) can transmit a data signal, which is a dimming signal corresponding to an input image, to a plurality of driving circuits (700) through a data line (D).

[0283] Additionally, the dimming driver (70) can transmit scan signals to multiple driving circuits (700) through scan lines (S).

[0284] In addition, the dimming driver (70) can transmit a clock signal corresponding to the light emission timing of the plurality of dimming blocks (B) to the plurality of driving circuits (700) through the clock line (CLK).

[0285] A plurality of driving circuits (700) can control the driving current supplied to each of the plurality of dimming blocks (B) based on a data signal, a scan signal, and / or a clock signal.

[0286] FIG. 11 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure. FIG. 12 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure. FIG. 13 is an enlarged view of a portion of a light source substrate included in a display device according to a comparative example.

[0287] Referring to FIGS. 11 to 13, a substrate line (500) disposed on a light source substrate (400) of a display device (1) according to one embodiment of the present disclosure may include a dimming block line (510) connected to each of a plurality of dimming blocks (B), and a light source interline (520) connecting light sources (300) included in the plurality of dimming blocks (B) to each other.

[0288] The dimming block line (510) can be connected to one of the light sources (300) included in each of the plurality of dimming blocks (B).

[0289] The dimming block line (510) may include a voltage line (511) configured to apply a driving voltage to each of the plurality of dimming blocks (B). The voltage line (511) may be connected to one of the light sources (300) included in each of the plurality of dimming blocks (B). For example, the voltage line (511) may be connected to a first light source (301) among the light sources (300) included in each of the plurality of dimming blocks (B). The voltage line (511) may be connected to a connector (600). The voltage line (511) connects the connector (600) and each of the plurality of dimming blocks (B), thereby allowing a driving voltage to be applied to each of the plurality of dimming blocks (B).

[0290] Within each dimming block (B), the first light source (301) may be closer to the substrate body (410) than other light sources (300) (e.g., the third light source (303), the fifth light source (305)) arranged parallel to the first light source (301) in the second direction (Y). As a result, the length of the voltage line (511) connecting the connector (600) and the plurality of dimming blocks (B) may be relatively shortened, and its arrangement may be relatively simplified.

[0291] A portion of the voltage line (511) may be arranged on a plurality of substrate bars (420). The voltage line (511) may include a bar voltage line (511a) arranged on a plurality of substrate bars (420).

[0292] A portion of the voltage line (511) other than the bar voltage line (511a) may be disposed on the substrate body (410). The voltage line (511) may include a body voltage line (511b) disposed on the substrate body (410). The body voltage line (511b) may be connected to a connector (600) mounted on the substrate body (410).

[0293] The bar voltage line (511a) and the body voltage line (511b) can be connected in series. The bar voltage line (511a) and the body voltage line (511b) can be formed integrally.

[0294] The voltage line (511) may include a main line (511c) and a branch line (511d) branched from the main line (511c). The main line (511c) may be configured as an integral line extending from the connector (600). The branch line (511d) may branch from the main line (511c) and be connected to a first light source (301) included in each of the plurality of dimming blocks (B). The branch line (511d) may connect the main line (511c) and the first light source (301) included in each of the plurality of dimming blocks (B).

[0295] The branch lines (511d) connected to the dimming blocks (B) corresponding to one substrate bar (420) may each be branched from a main line (511c). As described above, in one embodiment, assuming that the corresponding blocks (B) corresponding to one substrate bar (420) include a first dimming block (B1), a second dimming block (B2), a third dimming block (B3), and a fourth dimming block (B4), three branch lines (511d) may be branched from one main line (511c) and connected to the first light source (301) of the first dimming block (B1), the first light source (301) of the second dimming block (B2), and the first light source (301) of the third dimming block (B3), respectively. Since the fourth dimming block (B4) is placed on the end side of the substrate bar (420), the main line (511c) can be directly connected to the first light source (301) of the fourth dimming block (B4).

[0296] The dimming block line (510) may include a control line (512) provided to control the driving current supplied to each of the plurality of dimming blocks (B). The control line (512) may connect the driving circuit (700) and each of the plurality of dimming blocks (B). The control line (512) may connect the second light source (302) among the light sources (300) included in each of the driving circuit (700) and the plurality of dimming blocks (B).

[0297] Within each dimming block (B), the second light source (302) may be closer to the substrate body (410) than other light sources (300) (e.g., the fourth light source (304), the sixth light source (306)) arranged parallel to the second light source (302) in the second direction (Y). As a result, the length of the control line (512) connecting the driving circuit (700) mounted on the substrate body (410) and the plurality of dimming blocks (B) may be relatively shortened, and its arrangement may be relatively simplified.

[0298] The control line (512) may include a plurality of control lines (512). Each of the plurality of control lines (512) may be connected to a second light source (302) included in each of the plurality of dimming blocks (B). The plurality of control lines (512) may be provided to correspond to the number of the plurality of dimming blocks (B). For example, the control line (512) may include a first control line (512a) connected to a second light source (302) of a first dimming block (B1), a second control line (512b) connected to a second light source (302) of a second dimming block (B2), a third control line (512c) connected to a second light source (302) of a third dimming block (B3), and a fourth control line (512d) connected to a second light source (302) of a fourth dimming block (B4).

[0299] The light source interline (520) can connect the light sources (300) included in each of the plurality of dimming blocks (B) in series with each other. For example, the light source interline (520) can connect the first light source (301) and the third light source (303), connect the third light source (303) and the fifth light source (305), connect the fifth light source (305) and the sixth light source (306), connect the sixth light source (306) and the fourth light source (304), and connect the fourth light source (304) and the second light source (302). The light source interline (520) can be provided in multiple numbers to correspond to the number of the plurality of dimming blocks (B).

[0300] By this wiring structure, the first light source (301) in the dimming block (B) can be connected to the connector (600) by the voltage line (511), and the first light source (301), the third light source (303), the fifth light source (305), the sixth light source (306), the fourth light source (304), and the second light source (302) in the dimming block (B) can be connected to each other by the light source interline (520), and the second light source (302) can be connected to the driving circuit (700) by the control line (512). That is, among the plurality of light sources (300) connected in series included in one dimming block (B), the first light source (300) (for example, the first light source (301) is connected to the voltage line (511) and supplies the driving voltage (V LED ) can be authorized, and the last light source in the series connection (e.g., the second light source (302) can be connected to the driving circuit (700) via the control line (512).

[0301] The driving circuit (700) can be connected to another adjacent driving circuit (700) or connector (600) by a driving circuit connection line (530) as illustrated in FIG. 12.

[0302] As such, as various substrate lines (500) are arranged on the light source substrate (400), it is important to efficiently arrange the substrate lines (500) in order to reduce the material cost or manufacturing cost of the light source device (200). For example, if an area occurs where the substrate lines (500) intersect each other on the light source substrate (400), components such as jumpers may be required to avoid the intersection between the substrate lines (500), which may increase the material cost and reduce the manufacturing efficiency. In an embodiment using a double-sided mounting type light source substrate in which circuits or components can be arranged on each side of the substrate, the degree of intersection between the substrate lines can be reduced by arranging the substrate lines on each side of the substrate. In an embodiment using a single-sided mounting type light source substrate (400) in which the material cost is lower, it may be desirable to reduce the manufacturing cost by reducing the degree of intersection between the substrate lines (500). In addition to reducing material costs, the efficiency of the overall manufacturing process can be improved through reduction in crossover according to one embodiment.

[0303] Accordingly, according to one embodiment of the present disclosure, the dimming block line (510) may be disposed between the plurality of light sources (300) and the edge of the light source substrate (400). The dimming block line (510) may be disposed closer to the edge of the light source substrate (400) than the plurality of light sources (300). The dimming block line (510) may be disposed closer to the edge of the light source substrate (400) than the light source interline (520).

[0304] For example, some of the plurality of substrate bars (420) of the dimming block line (510) may be arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300). Some of the plurality of substrate bars (420) of the voltage line (511) may be arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300). Some of the plurality of substrate bars (420) of the main line (511c) may be arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300). In other words, the bar voltage line (511a) may be arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300). The bar voltage line (511a) may be arranged closer to the edges of each of the plurality of substrate bars (420) than to the light source interline (520).

[0305] Some of the control lines (512) arranged on the plurality of substrate bars (420) may be arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300). Some of the control lines (512) arranged on the plurality of substrate bars (420) may be arranged closer to the edges of each of the plurality of substrate bars (420) than to the light source interlines (520). In one embodiment, the second control line (512b), the third control line (512c), and the fourth control line (512d) may be arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300), respectively. The second control line (512b), the third control line (512c), and the fourth control line (512d) may be arranged closer to the edges of each of the plurality of substrate bars (420) than to the light source interlines (520).

[0306] In this way, the portions arranged on the plurality of substrate bars (420) of the dimming block line (510) are arranged between the edges of each of the plurality of substrate bars (420) and the plurality of light sources (300), and are arranged closer to the edges of each of the plurality of substrate bars (420) than the light source interlines (520), thereby preventing or reducing the intersection of the dimming block line (510), such as the voltage line (511) and the control line (512), with the light source interlines (520). In the embodiment of the present disclosure, the voltage line (511) and the control line (512) may be arranged so as not to intersect with a portion of the light source interline (520) connecting the fifth light source (305) and the sixth light source (306) included in each of the plurality of dimming blocks (B).

[0307] Another part of the dimming block line (510) disposed on the substrate body (410) may be disposed between the edge of the substrate body (410) and the plurality of light sources (300). Another part of the voltage line (511) disposed on the substrate body (410) may be disposed between the edge of the substrate body (410) and the plurality of light sources (300). In other words, the body voltage line (511b) may be disposed between the edge of the substrate body (410) and the plurality of light sources (300). The body voltage line (511b) may be disposed adjacent to the edge of the substrate body (410) opposite the plurality of substrate bars (420). The body voltage line (511b) may be disposed between the edge of the substrate body (410) opposite the plurality of substrate bars (420) and the light sources (300). For example, the body voltage line (511b) may be positioned closer to the side edge opposite the plurality of substrate bars (420) of the substrate body (410) than the first light source (301) and the second light source (302) of the first dimming block (B1).

[0308] In this way, the parts arranged on the substrate body (410) of the dimming block line (510), particularly the body voltage line (511b), are arranged between the edge of the substrate body (410) and the plurality of light sources (300), thereby preventing or reducing the body voltage line (511b) from intersecting with the light source interline (520). In addition, by arranging the body voltage line (511b) adjacent to the edge opposite to the plurality of substrate bars (420) of the substrate body (410), the first control line (512a) connecting the second light source (302) of the first dimming block (B1) and the driving circuit (700) from intersecting with the body voltage line (511b) can be prevented and / or reduced.

[0309] In order to more efficiently arrange the voltage line (511) and the control line (512) in each of the plurality of substrate bars (420), the voltage line (511) and the control line (512) may be positioned on opposite sides with respect to the center of the substrate bar (420).

[0310] As described above, according to one embodiment, the plurality of light sources (300) may include a plurality of first-side light sources (310) arranged adjacent to a first side of the substrate bar (420) in the first direction (Z), and a plurality of second-side light sources (320) arranged adjacent to a second side of the substrate bar (420) opposite to the first side of the substrate bar (420) in the first direction (Z). In such an embodiment, the voltage line (511) may be arranged between the plurality of first-side light sources (310) and the edges of each of the plurality of substrate bars (420). For example, the voltage line (511) may be arranged between the plurality of first-side light sources (310) and the first-side edges (e.g., upper edges) of each of the plurality of substrate bars (420). The control line (512) may be arranged between the plurality of second-side light sources (320) and the edges of each of the plurality of substrate bars (420). The control line (512) may be positioned between the plurality of second side light sources (320) and the second side edge (e.g., the lower edge) of each of the plurality of substrate bars (420).

[0311] As described above, in one embodiment, each of the plurality of substrate bars (420) may include a central extension (421), a plurality of first protrusions (422) extending in one direction from the central extension (421), and a plurality of second protrusions (423) extending in the other direction from the central extension (421). In such an embodiment, a portion of the dimming block line (510), for example, a voltage line (511), may be disposed along an edge of the plurality of first protrusions (422). A portion of the dimming block line (510), for example, a voltage line (511), may be disposed between the plurality of first side light sources (310) and the edges of the plurality of first protrusions (422). Another portion of the dimming block line (510), for example, a control line (512), may be disposed along an edge of the plurality of second protrusions (423). Another part of the dimming block line (510), for example the control line (512), may be positioned between the edges of the plurality of second side light sources (320) and the plurality of second protrusions (423).

[0312] However, unlike the embodiments illustrated in FIGS. 11 and 12, in various embodiments, the control line (512) may be arranged between the edges of the plurality of second-side light sources (320) and the plurality of second protrusions (423), and the voltage line (511) may be arranged between the edges of the plurality of first-side light sources (310) and the plurality of first protrusions (422).

[0313] Referring to FIG. 13, an embodiment is described that is comparable to the embodiment of the present disclosure described with reference to FIGS. 1 to 12.

[0314] Referring to FIG. 13, according to a comparative example, the voltage line (511-1) and the control line (512-1) may be arranged to be further from the edge of the light source substrate (400) than the plurality of light sources (300).

[0315] In this embodiment, a part of the voltage line (511-1) disposed on the substrate body (410) may intersect with the light source interline (520-1) connecting the second light source (302) and the fourth light source (304) of the first dimming block (B1) and / or the control line (512-1) connecting the second light source (302) of the first dimming block (B1) and the driving circuit (700). Accordingly, a first jumper (J1) configured to pass through some of the substrate lines (500) and connect other parts of the substrate lines (500) from both sides may be mounted in the intersection area between the above substrate lines (500).

[0316] In this embodiment, a part of the voltage line (511-1) disposed on the substrate bar (420) may intersect with the light source interline (520-1) connecting the fifth light source (305) and the sixth light source (306) of the dimming block (B). In addition, a part of the control line (512-1) disposed on the substrate bar (420) may intersect with the light source interline (520-1) connecting the fifth light source (305) and the sixth light source (306) of the dimming block (B). Accordingly, a second jumper (J2) configured to pass some of the substrate lines (500) and connect other parts of the substrate lines (500) from both sides may be mounted in the intersection area between the above substrate lines (500).

[0317] In this way, in the embodiment of FIG. 13, intersection areas between the substrate lines (500) may occur, and jumpers (J1, J2) may need to be mounted in those areas. This may complicate the arrangement of the substrate lines (500) and make it inefficient, increase manufacturing costs such as material costs, and reduce efficiency in the manufacturing process.

[0318] However, as described above, in the embodiment of the present disclosure described with reference to FIGS. 11 and 12, the degree of intersection between the substrate lines (500) can be reduced, so that the arrangement of the substrate lines (500) can be efficient and simplified, and the manufacturing cost can be reduced and the efficiency in the manufacturing process can be improved.

[0319] FIG. 14 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0320] Referring to FIG. 14, the design details of the light source device (200) according to one embodiment of the present disclosure will be described in detail.

[0321] As described above, in order for the dimming block line (510) to be placed closer to the edge of the light source substrate (400) than the plurality of light sources (300), a sufficient distance must be secured between the plurality of light sources (300) and the edge of the light source substrate (400) for the dimming block line (510) to be placed.

[0322] For example, the distance (d1) between the first side edge (e.g., upper edge) of the substrate bar (420) and the first side light source (310) needs to be designed to be sufficiently large so that the voltage line (511) can be placed. For example, the distance (d1) between the first side edge (e.g., upper edge) of the substrate bar (420) and the first side light source (310) is preferably approximately 3 mm or more, but this is only an example and the distance can be designed in various ways. The same may be true for the distance between the second side edge (e.g., lower edge) of the substrate bar (420) and the second side light source (320).

[0323] For example, the distance (d2) between the edge of the substrate body (410) opposite to the substrate bar (420) and the edge of the light sources (300) mounted on the substrate body (410) that is arranged closest to the edge needs to be designed to be sufficiently large so that the body voltage line (511b) can be arranged. For example, the distance (d2) between the edge of the substrate body (410) opposite to the substrate bar (420) and the edge of the light sources (300) mounted on the substrate body (410) that is arranged closest to the edge is preferably approximately 3.04 mm or more, but this is merely an example, and the distance may be designed in various ways.

[0324] Based on the bar illustrated in FIG. 14, among a pair of adjacent substrate bars (420), the substrate bar (420A) positioned on the upper side (+Z direction side) is referred to as the 'first substrate bar (420A)', and the substrate bar (420B) positioned on the lower side (-Z direction side) is referred to as the 'second substrate bar (420B)', and the distance between the light sources (300) mounted on the first substrate bar (420A) and the light sources (300) mounted on the second substrate bar (420B) is described.

[0325] In order to ensure that the distance (d1) between the first side edge (e.g., the upper edge) of the substrate bar (420) and the first side light source (310) and the distance between the second side edge (e.g., the lower edge) of the substrate bar (420) and the second side light source (320) are sufficiently large, the distance between the light sources (300) arranged in one substrate bar (420) is designed to be relatively short, while the distance between the light sources (300) mounted on the first substrate bar (420A) and the light sources (300) mounted on the second substrate bar (420B) for the first substrate bar (420A) and the second substrate bar (420B) that are adjacent to each other can be designed to be relatively longer than a predetermined length.

[0326] For example, the distance (da or dc) between a light source (300) (e.g., a second-side light source (320)) positioned adjacent to a side edge of a first substrate bar (420A) adjacent to a second substrate bar (420B) and a light source (300) (e.g., a first-side light source (310)) positioned adjacent to a side edge of the first substrate bar (420A) opposite to the second substrate bar (420B) may be shorter than the distance (db or dd) between a light source (e.g., a second-side light source (320)) positioned adjacent to a side edge of a first substrate bar (420A) adjacent to a second substrate bar (420B) and a light source (e.g., a first-side light source (310)) positioned adjacent to a side edge of a second substrate bar (420B) adjacent to the first substrate bar (420A).

[0327] For example, the distance (da or dc) between the first side light source (310) and the second side light source (320) of the first substrate bar (420A) may be approximately 22 mm, but the present disclosure is not limited thereto. For example, the distance (db or dd) between the second side light source (320) of the first substrate bar (420A) and the first side light source (310) of the second substrate bar (420B) may be approximately 26 mm, but the present disclosure is not limited thereto.

[0328] For example, the distance (dl1) between the first line (L1) connecting the centers of the plurality of first-side light sources (310) mounted on the first substrate bar (420A) in the second direction (Y) and the second line (L2) connecting the centers of the plurality of second-side light sources (320) mounted on the first substrate bar (420A) in the second direction (Y) may be longer than the distance (dl2) between the second line (L2) and the third line (L3) connecting the centers of the plurality of first-side light sources (310) mounted on the second substrate bar (420B) in the second direction (Y).

[0329] For example, the distance (dl1) between the first line (L1) and the second line (L2) may be approximately 17 mm, and the distance (dl2) between the second line (L2) and the third line (L3) may be approximately 21.5 mm, but the present disclosure is not limited thereto.

[0330] However, in a structure like this, since the distance between multiple light sources (300) is not constant, there is a possibility that a difference in brightness between areas may occur, causing mura to be visible on the screen.

[0331] Therefore, it is desirable to design the distance between light sources (300) appropriately so that no mura is visible on the screen while reducing the difference in brightness between areas by using a high-efficiency diffusion plate (130) and optical sheet (140).

[0332] FIG. 15 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0333] When describing the configurations of a display device (1) according to one embodiment of the present disclosure with reference to FIG. 15, the same drawing reference numerals may be assigned to configurations corresponding to the configurations of the embodiments of FIGS. 1 to 14, and the corresponding descriptions may not be repeated.

[0334] Referring to FIG. 15, a plurality of light sources (300) included in a light source device (200) of a display device (1) according to one embodiment of the present disclosure may include a plurality of dimming blocks (B). The plurality of light sources (300) may be formed of a plurality of dimming blocks (B) including a predetermined number of light sources (300). For example, the plurality of dimming blocks (B) may be divided into a first dimming block (B1), a second dimming block (B2), a third dimming block (B3), a fourth dimming block (B4), etc. from the side adjacent to the substrate body (410).

[0335] According to one embodiment, each of the plurality of dimming blocks (B) may include five light sources (300) including a first light source (301), a second light source (302), a third light source (303), a fourth light source (304), and a fifth light source (305). In any dimming block (B) (e.g., the first dimming block (B1), the third dimming block (B)), the first light source (301), the third light source (303) may be a first-side light source (310) arranged parallel to each other in the second direction (Y), and the second light source (302), the fourth light source (304), and the fifth light source (305) may be a second-side light source (320) arranged parallel to each other in the second direction (Y). According to one embodiment, in a dimming block (B) (e.g., a second dimming block (B2), a fourth dimming block (B4)), a first light source (301), a third light source (303), and a fifth light source (305) may be a first-side light source (310) arranged parallel to each other in a second direction (Y), and a second light source (302), a fourth light source (304) may be a second-side light source (320) arranged parallel to each other in a second direction (Y).

[0336] In this way, the number of light sources (300) included in one dimming block (B) in various embodiments may be provided in various ways. Even if the number of light sources (300) included in the dimming block (B) is different from that described in the embodiments of FIGS. 1 to 14, some of the light sources (300) arranged on the substrate bar (420) of the dimming block line (510) may be arranged between the edge of the substrate bar (420) and the plurality of light sources (300), and may be arranged closer to the edge of the substrate bar (420) than the light source inter-line (520). In addition, other of the light sources (300) arranged on the substrate body (410) of the dimming block line (510) may be arranged between the edge of the substrate body (410) and the plurality of light sources (300). A detailed description of the arrangement of the substrate line (500), such as the dimming block line (510) and the light source inter-line (520), corresponds to what has been described above, and is therefore omitted below.

[0337] FIG. 16 is an enlarged view of a portion of a light source substrate included in a display device according to one embodiment of the present disclosure.

[0338] When describing the configurations of a display device (1) according to one embodiment of the present disclosure with reference to FIG. 16, the same drawing reference numerals may be given to configurations corresponding to the configurations of the embodiments of FIGS. 1 to 15, and detailed descriptions may not be repeated.

[0339] Referring to FIG. 16, a display device (1) according to one embodiment of the present disclosure may include a light source substrate (1400) on which a plurality of light sources (300) are mounted. The light source substrate (1400) may include a substrate body (1410) and a plurality of substrate bars (1420) extending from one side of the substrate body (1410). In FIGS. 1 to 15, the substrate bar (420) has been described as having a shape including a central extension portion (421) and a plurality of protrusions (422, 423) extending therefrom, but according to one embodiment, as illustrated in FIG. 16, the substrate bar (1420) may have a rectangular shape having a substantially constant width along the first direction (Z). That is, the substrate bar (1420) may not include a separate protrusion.

[0340] A dimming block line (1510) connected to one of the light sources (300) included in each of a plurality of dimming blocks (B) may be arranged on the light source substrate (1400).

[0341] For example, the dimming block line (1510) may include a voltage line (1511) connected to a first light source (301) among the light sources (300) included in each of the plurality of dimming blocks (B). The voltage line (1511) may include a bar voltage line (1511a) disposed on a substrate bar (1420), a body voltage line (1511b) disposed on a substrate body (1410), and the like.

[0342] For example, the dimming block line (1510) may include a control line (1512) connected to a second light source (302) among the light sources (300) included in each of the plurality of dimming blocks (B). The control line (1512) may include a first control line (1512a) connected to a second light source (302) of a first dimming block (B1), a second control line (1512b) connected to a second light source (302) of a second dimming block (B2), a third control line (1512c) connected to a second light source (302) of a third dimming block (B3), a fourth control line (1512d) connected to a second light source (302) of a fourth dimming block (B4), etc.

[0343] A light source interline (1520) that connects light sources (300) included in each dimming block (B) in series to each other can be arranged on the light source substrate (1400).

[0344] According to one embodiment of the present disclosure, the dimming block line (1510) may be disposed between the plurality of light sources (300) and the edge of the light source substrate (1400). The dimming block line (1510) may be disposed closer to the edge of the light source substrate (1400) than the plurality of light sources (300). The dimming block line (1510) may be disposed closer to the edge of the light source substrate (1400) than the light source interline (1520).

[0345] For example, some of the plurality of substrate bars (1420) of the dimming block line (1510) may be arranged between the edges of each of the plurality of substrate bars (1420) and the plurality of light sources (300). Some of the plurality of substrate bars (1420) of the voltage line (1511), for example, the bar voltage line (1511a), may be arranged between the edges of each of the plurality of substrate bars (1420) and the plurality of light sources (300). The bar voltage line (1511a) may be arranged closer to the edges of each of the plurality of substrate bars (1420) than the light source interline (1520).

[0346] Some of the control lines (1512) arranged on the plurality of substrate bars (1420) may be arranged between the edges of each of the plurality of substrate bars (1420) and the plurality of light sources (300). Some of the control lines (1512) arranged on the plurality of substrate bars (1420) may be arranged closer to the edges of each of the plurality of substrate bars (1420) than to the light source interlines (1520). In one embodiment, the second control line (1512b), the third control line (1512c), and the fourth control line (1512d) may be arranged between the edges of each of the plurality of substrate bars (1420) and the plurality of light sources (300), respectively. The second control line (1512b), the third control line (1512c), and the fourth control line (1512d) may be arranged closer to the edges of each of the plurality of substrate bars (1420) than to the light source interlines (1520).

[0347] Another part of the dimming block line (1510) disposed on the substrate body (1410) may be disposed between the edge of the substrate body (1410) and the plurality of light sources (300). Another part of the voltage line (1511) disposed on the substrate body (1410), that is, the body voltage line (1511b), may be disposed between the edge of the substrate body (1410) and the plurality of light sources (300). The body voltage line (1511b) may be disposed adjacent to the edge of the substrate body (1410) opposite the plurality of substrate bars (1420). The body voltage line (1511b) may be disposed between the edge of the substrate body (1410) opposite the plurality of substrate bars (1420) and the light sources (300). For example, the body voltage line (1511b) may be positioned closer to the side edge opposite the plurality of substrate bars (1420) of the substrate body (1410) than the first light source (301) and the second light source (302) of the first dimming block (B1).

[0348] According to one embodiment, the voltage line (1511) may be disposed between the plurality of first-side light sources (310) and the edges of each of the plurality of substrate bars (1420). Specifically, the voltage line (1511) may be disposed between the plurality of first-side light sources (310) and the first-side edges (e.g., upper edges) of each of the plurality of substrate bars (1420). The control line (1512) may be disposed between the plurality of second-side light sources (320) and the edges of each of the plurality of substrate bars (1420). The control line (1512) may be disposed between the plurality of second-side light sources (320) and the second-side edges (e.g., lower edges) of each of the plurality of substrate bars (1420).

[0349] By this structure, the degree of crossing between substrate lines such as dimming block lines (1510) and light source interlines (1520) can be prevented or reduced.

[0350] A display device according to one embodiment of the present disclosure may include a display panel, a plurality of light sources arranged to irradiate light toward the display panel, and a light source substrate including a substrate line on which the plurality of light sources are mounted and connected to at least a portion of the plurality of light sources. The light source substrate may include a substrate body extending in a first direction, and a plurality of substrate bars arranged to be spaced apart from each other in the first direction and extending in a second direction different from the first direction from one side of the substrate body. The plurality of light sources may form a plurality of dimming blocks including a predetermined number of light sources. The substrate line may include a dimming block line connected to one of the light sources included in each of the plurality of dimming blocks. A portion of the dimming block line disposed on the plurality of substrate bars may be disposed between a border of each of the plurality of substrate bars and the plurality of light sources.

[0351] The above substrate line may further include a light source inter-line connecting the light sources included in each of the plurality of dimming blocks to each other. The portion of the dimming block line arranged on the plurality of substrate bars may be arranged closer to the edge of each of the plurality of substrate bars than the light source inter-line.

[0352] Another part of the dimming block line disposed on the substrate body may be disposed between the edge of the substrate body and the plurality of light sources.

[0353] The other part of the dimming block line disposed on the substrate body may be disposed adjacent to the side edge opposite to the plurality of substrate bars of the substrate body.

[0354] The dimming block line may include a voltage line connected to a first light source among the light sources included in each of the plurality of dimming blocks so as to apply a driving voltage to each of the plurality of dimming blocks. A portion of the voltage line disposed on the plurality of substrate bars may be disposed between the edges of each of the plurality of substrate bars and the plurality of light sources.

[0355] Another part of the voltage line disposed on the substrate body may be disposed between the edge of the substrate body and the plurality of light sources.

[0356] The voltage line may include a main line arranged between the edges of each of the plurality of substrate bars and the plurality of light sources, and a branch line branched from the main line and connected to the first light source included in each of the plurality of dimming blocks.

[0357] The first light source may be closer to the substrate body than other light sources arranged parallel to the first light source in the second direction within the dimming block.

[0358] The display device may further include a driving circuit mounted on the light source substrate and configured to control a driving current supplied to light sources included in each of the plurality of dimming blocks. The dimming block line may include a control line connecting the driving circuit and a second light source among the light sources included in each of the plurality of dimming blocks. The control line may be arranged between the edge of each of the plurality of substrate bars and the plurality of light sources.

[0359] The above substrate line may further include a light source inter-line connecting the light sources included in each of the plurality of dimming blocks to each other. The control line may include a plurality of control lines. The plurality of control lines may be arranged closer to the edge of each of the plurality of substrate bars than the light source inter-line.

[0360] The second light source may be closer to the substrate body than other light sources arranged parallel to the second light source in the second direction within the dimming block.

[0361] Each of the plurality of substrate bars may include a central extension portion extending in the second direction, a plurality of first protrusions protruding from one side of the central extension portion in the first direction toward the outside of the central extension portion, on which some of the plurality of light sources are mounted, and a plurality of second protrusions protruding from the other side of the central extension portion in the first direction toward the outside of the central extension portion, on which other parts of the plurality of light sources are mounted. A portion of the dimming block line may be arranged along an edge of the plurality of first protrusions. Another portion of the dimming block line may be arranged along an edge of the plurality of second protrusions.

[0362] The plurality of light sources may include a plurality of first-side light sources arranged on the plurality of first protrusions, and a plurality of second-side light sources arranged on the plurality of second protrusions. A portion of the dimming block line may be arranged between the plurality of first-side light sources and edges of the plurality of first protrusions. Another portion of the dimming block line may be arranged between the plurality of second-side light sources and edges of the plurality of second protrusions.

[0363] The dimming block line may further include a voltage line connected to a first light source among the light sources included in each of the plurality of dimming blocks to apply a driving voltage to each of the plurality of dimming blocks, and a control line connected to a second light source among the light sources included in each of the plurality of dimming blocks to control a driving current supplied to each of the plurality of dimming blocks. The voltage line may be arranged between the plurality of first-side light sources and edges of the plurality of first protrusions. The control line may be arranged between the plurality of second-side light sources and edges of the plurality of second protrusions.

[0364] The plurality of substrate bars may include a first substrate bar and a second substrate bar that are adjacent to each other. A distance between a light source disposed adjacent to a side edge of the first substrate bar adjacent to the second substrate bar and a light source disposed adjacent to a side edge of the first substrate bar opposite to the second substrate bar may be shorter than a distance between a light source disposed adjacent to a side edge of the first substrate bar adjacent to the second substrate bar and a light source disposed adjacent to a side edge of the second substrate bar adjacent to the first substrate bar.

[0365] A display device according to one embodiment of the present disclosure may include a display panel, a plurality of light sources arranged to irradiate light toward the display panel, and a light source substrate including a substrate line on which the plurality of light sources are mounted and connected to at least a portion of the plurality of light sources. The light source substrate may include a substrate body extending in a first direction, and a plurality of substrate bars arranged to be spaced apart from each other in the first direction and extending in a second direction different from the first direction from one side of the substrate body. The plurality of light sources may form a plurality of dimming blocks including a predetermined number of light sources. The substrate line may include a light source inter-line connecting the light sources included in each of the plurality of dimming blocks to each other, and a dimming block line connected to one of the light sources included in each of the plurality of dimming blocks and disposed between the light source inter-line and an edge of each of the plurality of substrate bars.

[0366] The display device may further include a driving board, a connector mounted on the light source substrate and electrically connected to the driving board, and a driving circuit mounted on the light source substrate and electrically connected to the connector and configured to control driving current supplied to light sources included in each of the plurality of dimming blocks. The dimming block line may further include a voltage line connecting the connector to a first light source among the light sources included in each of the plurality of dimming blocks so as to apply a driving voltage to each of the plurality of dimming blocks, and a control line connecting the driving circuit and a second light source among the light sources included in each of the plurality of dimming blocks.

[0367] The plurality of light sources may include a plurality of first-side light sources arranged adjacent to a first side of each of the plurality of substrate bars in the first direction, and a plurality of second-side light sources arranged adjacent to a second side of each of the plurality of substrate bars in the first direction. The voltage line may be arranged between the plurality of first-side light sources and an edge of each of the plurality of substrate bars. The control line may be arranged between the plurality of second-side light sources and an edge of each of the plurality of substrate bars.

[0368] Each of the plurality of substrate bars may include a central extension portion extending in the second direction, a plurality of first protrusions protruding from one side of the central extension portion in the first direction toward the outside of the central extension portion, on which some of the plurality of light sources are mounted, and a plurality of second protrusions protruding from the other side of the central extension portion in the first direction toward the outside of the central extension portion, on which other parts of the plurality of light sources are mounted. A portion of the dimming block line may be arranged along an edge of the plurality of first protrusions. Another portion of the dimming block line may be arranged along an edge of the plurality of second protrusions.

[0369] A display device according to one embodiment of the present disclosure may include a plurality of substrate bars, each of which includes a plurality of light sources forming a plurality of dimming blocks each including a predetermined number of light sources, and a plurality of substrate bars, each of which includes a dimming block line on which the plurality of light sources are mounted and connected to one of the light sources included in each of the plurality of dimming blocks, the plurality of substrate bars being spaced apart from each other in a first direction and each extending in a second direction different from the first direction. The plurality of light sources may include a plurality of first-side light sources arranged adjacent to a first side of each of the plurality of substrate bars in the first direction, and a plurality of second-side light sources arranged adjacent to a second side of each of the plurality of substrate bars in the first direction. The dimming block lines may include a voltage line for applying a driving voltage to each of the plurality of dimming blocks, the voltage line being arranged between the plurality of first-side light sources and an edge of each of the plurality of substrate bars, and a control line for controlling a driving current supplied to each of the plurality of dimming blocks, the control line being arranged between the plurality of second-side light sources and an edge of each of the plurality of substrate bars.

[0370] According to the idea of ​​the present disclosure, dimming block lines such as voltage lines and control lines can be arranged between the light sources and the border of the light source substrate so as not to intersect the light source interlines, and the efficiency of the arrangement of the substrate lines can be improved.

[0371] According to the idea of ​​the present disclosure, dimming block lines such as voltage lines and control lines are arranged so as not to intersect with light source interconnect lines, thereby reducing the number of electronic components such as jumpers mounted on the light source substrate.

[0372] According to the idea of ​​the present disclosure, substrate lines can be efficiently arranged even on a single-sided mounting type light source substrate by reducing the degree of intersection between substrate lines.

[0373] According to the idea of ​​the present disclosure, the efficiency of the manufacturing process can be improved and the manufacturing cost can be reduced by making the layout of substrate lines on the light source substrate more efficient and reducing the number of mounted electronic components.

[0374] The effects according to the idea of ​​the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs.

[0375] While various embodiments have been illustrated and described above, these embodiments are merely exemplary, and the present disclosure is not limited to the aforementioned embodiments. Those skilled in the art will readily appreciate the various modifications and implementations without departing from the spirit or scope of the invention.

Claims

1. Display panel; A plurality of light sources arranged to irradiate light toward the display panel; and A light source substrate in which the plurality of light sources are provided; The above light source substrate is, A substrate body extending in a first direction; A plurality of substrate bars spaced apart from each other in the first direction and extending in a second direction different from the first direction from one side of the substrate body; and a substrate line connected to at least a portion of the plurality of light sources; At least some of the plurality of light sources are provided as a plurality of dimming blocks on the first substrate bar, each dimming block including a predetermined number of light sources among the at least some of the plurality of light sources, The above substrate line is, a dimming block line connected to at least one light source of each of the plurality of dimming blocks; A display device wherein at least a portion of the dimming block line is disposed between the edge of the first substrate bar and at least a portion of the plurality of light sources.

2. In paragraph 1, The above substrate line is, Further comprising a light source inter-line connecting the light sources of each dimming block among the plurality of dimming blocks; A display device wherein at least a portion of the dimming block line is positioned closer to the edge of the first substrate bar than the light source interline.

3. In paragraph 1, A display device wherein at least a second portion of the dimming block line is disposed between the edge of the substrate body and at least a portion of the plurality of light sources.

4. In paragraph 3, At least the second portion of the dimming block line is adjacent to the edge of the substrate body, A display device in which the border of the above substrate body is opposite to the plurality of substrate bars.

5. In paragraph 1, The dimming block line includes a voltage line connected to a first light source of each dimming block among the plurality of dimming blocks, and configured to apply a driving voltage to each of the plurality of dimming blocks. A display device wherein a portion of the voltage line is disposed between the first border of the first substrate bar and at least a portion of the plurality of light sources.

6. In paragraph 5, A display device wherein the second portion of the voltage line is disposed between the edge of the substrate body and at least a portion of the plurality of light sources.

7. In paragraph 5, The above voltage line is, A main line disposed between the first edge of the first substrate bar and at least a portion of the plurality of light sources and formed integrally; and A display device comprising: a branch line branched from the main line and connected to the first light source of each dimming block among the plurality of dimming blocks; 8. In paragraph 5, A display device wherein at least one of the light sources of each dimming block is aligned with the first light source in the second direction, and the first light source is closer to the substrate body than the one or more light sources.

9. In paragraph 1, Further comprising a driving circuit mounted on the light source substrate and configured to control driving current supplied to the light sources of the plurality of dimming blocks; The above dimming block line includes a control line connecting the driving circuit and the second light source of each dimming block, A display device wherein the control line is disposed between the second edge of the first substrate bar and at least a portion of the plurality of light sources.

10. In paragraph 9, The above substrate line is, Further comprising a light source inter-line connecting the light sources of each dimming block among the plurality of dimming blocks; The above control line includes a plurality of control lines, A display device wherein the plurality of control lines are arranged closer to the second border of the first substrate bar than the light source interlines.

11. In paragraph 9, A display device in which, among the light sources of each dimming block, one or more light sources are aligned with the second light source in the second direction, and the second light source is closer to the substrate body than the one or more light sources.

12. In paragraph 1, Each of the above plurality of substrate bars, A central extension extending in the second direction; A plurality of first protrusions protruding from the first side in the first direction of the central extension and having some of the plurality of light sources provided therein; and a plurality of second protrusions protruding from the second side in the first direction of the central extension and provided with another part of the plurality of light sources; On the first substrate bar, the first portion of the dimming block line is provided along the edge of the plurality of first protrusions of the first substrate bar, A display device in which the second part of the above dimming block line is provided along the edge of the plurality of second protrusions of the first substrate bar.

13. In paragraph 12, At least some of the above plurality of light sources, a plurality of first side light sources arranged on the plurality of first protrusions of the first substrate bar; and a plurality of second side light sources arranged on the plurality of second protrusions of the first substrate bar; The first part of the dimming block line is disposed between the plurality of first side light sources and the edges of the plurality of first protrusions, A display device wherein the second portion of the dimming block line is disposed between the plurality of second side light sources and the edges of the plurality of second protrusions.

14. In paragraph 13, The above dimming block line is, A voltage line connected to a first light source of each of the plurality of dimming blocks and configured to apply a driving voltage to each of the plurality of dimming blocks; and Further comprising a control line connected to a second light source of each of the plurality of dimming blocks and configured to control a driving current supplied to each of the plurality of dimming blocks; The voltage line is arranged between the plurality of first side light sources and the edges of the plurality of first protrusions, A display device in which the control line is positioned between the plurality of second side light sources and the edges of the plurality of second protrusions.

15. In paragraph 1, The plurality of substrate bars include the first substrate bar and a second substrate bar adjacent to the first substrate bar, A display device in which a distance between a light source disposed on a first edge adjacent to the second substrate bar of the first substrate bar and a light source disposed on a second edge opposite to the second substrate bar of the first substrate bar is shorter than a distance between the light source on the first edge of the first substrate bar and a light source disposed on a edge adjacent to the first substrate bar of the second substrate bar.

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