Light source device, method for manufacturing same, and display apparatus comprising light source device

Abstract

According to an aspect of the present disclosure, a method for manufacturing a light source device comprising a first light source substrate and a second source substrate each comprising a substrate body and a substrate bar extending from the substrate body may comprise: forming the first light source substrate comprising a first substrate body extending from a base substrate in a first direction and a first substrate bar extending from the first substrate body in a second direction, and forming the second light source substrate comprising extending a second substrate body extending in the first direction and a second substrate bar extending from the second substrate body in a third direction opposite to the second direction so as to be disposed alternately with the first substrate bar; cutting the base substrate so as to form multiple bridges that connect the first light source substrate and the second light source substrate; disposing a mask pattern having an opening on the base substrate that has been cut; disposing solder on the mask pattern; and pressing the solder on the mask pattern such that that the solder is introduced into the opening. The cutting of the base substrate so as to form the multiple bridges may include cutting the base substrate such that the multiple bridges connect the first substrate body of the first light source substrate and one end of the second substrate bar of the second light source substrate in the third direction.

Description

Light source device, manufacturing method thereof, and display device including light source device

[0001] The present disclosure relates to a light source device, a method for manufacturing the same, and a display device including the light source device.

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

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

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

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

[0006] One aspect of the present disclosure provides a light source device with a reduced defect rate, a method for manufacturing the same, and a display device including the light source device.

[0007] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0008] According to one aspect of the present disclosure, a method for manufacturing a light source device including a first light source substrate and a second light source substrate, each of which includes a substrate body and a substrate bar extending from the substrate body, comprises: forming the first light source substrate including a first substrate body extending in a first direction on a base substrate and a first substrate bar extending in a second direction from the first substrate body, and the second light source substrate including a second substrate body extending in the first direction and a second substrate bar extending in a third direction opposite to the second direction from the second substrate body so as to be alternately arranged with the first substrate bars; cutting the base substrate to form a plurality of bridges connecting the first light source substrate and the second light source substrate; arranging a mask pattern having an opening on the cut base substrate; arranging solder on the mask pattern; and pressing the solder on the mask pattern so that the solder is introduced into the openings; and cutting the base substrate to form the plurality of bridges comprises: forming the plurality of bridges such that the plurality of bridges are formed by It may include cutting the base substrate to connect the first substrate body of the first light source substrate and one end of the second substrate bar of the second light source substrate along the third direction.

[0009] According to one aspect of the present disclosure, a method for manufacturing a light source device including a first light source substrate and a second light source substrate, each of which includes a substrate body and a substrate bar extending from the substrate body, may include forming the first light source substrate including a first substrate body extending in a first direction on a base substrate and a first substrate bar extending in a second direction from the first substrate body, and the second light source substrate including a second substrate body extending in the first direction and a second substrate bar extending in a third direction opposite to the second direction from the second substrate body so as to be alternately arranged with the first substrate bars, cutting the base substrate to form a plurality of bridges connecting the first light source substrate and the second light source substrate, arranging a mask pattern having an opening on the cut base substrate, arranging solder on the mask pattern, and pressurizing the solder on the mask pattern so that the solder is introduced into the openings, and forming guide holes in the plurality of bridges.

[0010] According to one aspect of the present disclosure, a method for manufacturing a light source device includes a first light source substrate including a first substrate body extending in a first direction on a base substrate and a first substrate bar extending in a second direction from the first substrate body, and a second light source substrate including a second substrate body extending in the first direction and a second substrate bar extending in a third direction opposite to the second direction from the second substrate body, the method comprising: cutting the base substrate to form a plurality of bridges connecting one end of the first substrate body and the second substrate bar along the third direction and one end of the second substrate body and the first substrate bar along the second direction; arranging a mask pattern having an opening on the cut base substrate; arranging solder on the mask pattern; and pressing the solder on the mask pattern so that the solder is introduced into the opening; and among the plurality of bridges, the one end of the first substrate body along the second direction, the one end of the second substrate bar along the third direction, and the plurality of bridges are formed by cutting the base substrate to form a plurality of bridges. It may include forming a plurality of guide holes in each of one end of the second substrate body along the third direction and one end of the first substrate bar along the second direction among the bridges.

[0011] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0012] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0013] FIG. 3 is a cross-sectional view of a display panel of a display device according to one embodiment of the present disclosure.

[0014] FIG. 4 is an enlarged view of a light source device of a display device according to one embodiment of the present disclosure.

[0015] FIG. 5 is a drawing illustrating a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0016] FIG. 6 is an enlarged view of a display device according to one embodiment of the present disclosure.

[0017] FIG. 7 is an enlarged view of a portion of a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure.

[0018] FIG. 8 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0019] FIG. 9 is a flowchart of a method for manufacturing a light source device of a display device according to one embodiment of the present disclosure.

[0020] FIG. 10 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0021] FIG. 11 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0022] FIG. 12 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0023] FIG. 13 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0024] FIG. 14 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0025] FIG. 15 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0026] FIG. 16 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0027] FIG. 17 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0028] FIG. 18 is an enlarged view of a base substrate in a display device according to one embodiment of the present disclosure.

[0029] FIG. 19 is an enlarged view of a base substrate in a display device according to one embodiment of the present disclosure.

[0030] FIG. 20 is an enlarged view of a base substrate in a display device according to one embodiment of the present disclosure.

[0031] FIG. 21 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

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

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

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

[0035] Additionally, in the present disclosure, each of the phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “at least one of A, B, or C” may include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof.

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

[0037] Additionally, terms including ordinal numbers such as "first," "second," etc., used in this disclosure may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term "and / or" includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

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

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

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

[0041] In addition, the terms "first direction," "second direction," and "third direction" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, although the first direction is described as indicating a horizontal direction, this may be an up-down direction or a front-back direction. In addition, although the second direction and the third direction are described as upward and / or downward directions that are perpendicular to and opposite to the first direction, this may be a left-right direction or a front-back direction.

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

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

[0044] Referring to FIG. 1, a display device (1) according to one embodiment of the present disclosure is a device that processes an image signal received from the outside and can visually display the processed image. The display device (1) may include a television (TV). However, the display device (1) is not limited thereto. For example, the display device (1) may be implemented in various forms, such as a monitor, which is a type of computer output device, a portable multimedia device, a portable communication device, etc., and the form of the display device (1) is not limited as long as it is a device that visually displays an image.

[0045] In addition, the display device (1) may be a large format display (LFD) installed outdoors, such as on a building rooftop or a bus stop. Here, the outdoors is not necessarily limited to outdoors, and the display device (1) according to one embodiment of the present disclosure may be installed in any indoor location where a large number of people may enter and exit, such as a subway station, shopping mall, movie theater, company, or store.

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

[0047] The display device (1) can receive content including video signals and audio signals from various content sources, and output video and audio corresponding to the video signals and audio signals. For example, the display device (1) can receive content data via a broadcast reception antenna or a wired cable, receive content data from a content playback device, or receive content data from a content provider's content provision server.

[0048] The display device (1) can display an image corresponding to video data and output a sound corresponding to audio data. For example, the display device (1) can restore a plurality of image frames included in the video data and continuously display the plurality of image frames. In addition, the display device (1) can restore an audio signal included in the audio data and continuously output a sound according to the audio signal.

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

[0050] The display device (1) can be installed in a standing manner on an indoor or outdoor floor or furniture, or can be installed in a wall-mounted manner on a wall or within a wall. For example, the display device (1) can include a support leg (19) provided at the lower portion of the main body (11) so that it can be installed in a standing manner on an indoor or outdoor floor or furniture.

[0051] The main body (11) can form the outer shape of the display device (1). Parts for performing various functions, such as displaying an image (I) by the display device (1), can be provided inside the main body (11).

[0052] The display device (1) can be configured to display an image (I). Specifically, the screen (12) can be formed on the front of the main body (11), and the display device (1) can display the image (I) through the screen (12). For example, the screen (12) can display a still image or a moving image. In addition, the screen (12) can display a two-dimensional flat image or a three-dimensional stereoscopic image using the parallax of the user's two eyes.

[0053] A plurality of pixels (P) may be formed on the screen (12). An image (I) displayed on the screen (12) may be formed by light emitted from each of the plurality of pixels (P). For example, an image (I) may be formed on the screen (12) by combining the light emitted from the plurality of pixels (P) like a mosaic.

[0054] Each of the plurality of pixels (P) can emit light of different brightness and different colors. For example, each of the plurality of pixels (P) can be divided into sub-pixels (P R , P G , P B ) may include sub-pixels (P R , P G , P B ) is a red sub-pixel (P) that can emit red light. R ), a green sub-pixel (P) capable of emitting green light G ) and blue sub-pixels (P) capable of emitting blue light. B ) can include. For example, red light can refer to light with a wavelength of approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, green light can refer to light with a wavelength of approximately 495 nm to 570 nm, and blue light can refer to light with a wavelength of approximately 450 nm to 495 nm.

[0055] Red subpixel (P R ), green subpixel (P G) and blue subpixel (P B ) Each of the plurality of pixels (P) can emit light of various brightness and color by combining the light emitted from each pixel.

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

[0057] Referring to FIG. 2, various components for generating an image (I) on a screen (12) may be provided inside a main body (11) of a display device (1) according to one embodiment of the present disclosure. The main body (11) may include a middle mold (14), a bottom chassis (15), and / or a rear cover (16).

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

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

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

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

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

[0063] The cable (20a) can electrically connect between the control assembly (50) / power assembly (60) and the driver IC (30), and can also electrically connect between the driver IC (30) and the display panel (20). The cable (20a) can include a flexible flat cable or a film cable that can be bent.

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

[0065] In addition, the cable (20a) and the driver IC (30) may be implemented as a single unit, such as a film cable, a chip on film (COF), a tape carrier packet (TCP), etc. In other words, the driver IC (30) may be placed on the cable (20b). However, this is not limited thereto, and the driver IC (30) may be placed on the display panel (20).

[0066] The display device (1) may include a backlight unit (100) configured to irradiate light toward the display panel (20). The backlight unit (100) may be provided within the main body (11). The backlight unit (100) may be arranged at the rear of the display panel (20) and configured to irradiate light toward the front where the display panel (20) is located. The display panel (20) may block or allow light emitted from the backlight unit (100) to pass through. The backlight unit (100) may be a light source device (100).

[0067] The backlight unit (100) may include a point light source that emits monochromatic light or white light, and may be configured to refract, reflect, and scatter light to convert light emitted from the point light source into uniform surface light. The backlight unit (100) may emit uniform surface light toward the front by refracting, reflecting, and scattering light emitted from the point light source.

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

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

[0070] The backlight unit (100) may include a reflective sheet (120) configured to reflect light. The reflective sheet (120) may reflect light forward or in a direction close to the forward direction. For example, the reflective sheet (120) may be attached to the front surface of the light source module (1000). The reflective sheet (120) may be attached to the front surface of the light source substrate (1200).

[0071] For example, the light source module (1000) (e.g., the light source (1100) of the light source module (1000), see FIG. 4) can emit light in various directions in front of the reflective sheet (120). The light emitted from the light source module (1000) can be emitted not only toward the diffusion plate (130) described later, but also toward the reflective sheet (120) from the light source module (1000), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffusion plate (130).

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

[0073] The backlight unit (100) may include a diffuser plate (130) that is provided to evenly diffuse light. The diffuser plate (130) may be provided in front of the light source module (1000) and the reflective sheet (120). The diffuser plate (130) may evenly disperse the light emitted from the light source module (1000) and then emit it forward.

[0074] The backlight unit (100) may include an optical sheet (140) that is provided to further improve the luminance and uniformity of the emitted light. The optical sheet (140) may be provided to refract and scatter light emitted from the front surface of the diffusion plate (130). For example, the optical sheet (140) may include various types of sheets such as a diffusion sheet, a prism sheet, a reflective polarizing sheet, and a quantum dot sheet.

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

[0076] The display device (1) may include a control assembly (50) that controls the operation of the backlight unit (100) and the display panel (20), and a power assembly (60) that supplies power to the backlight unit (100) and the display panel (20). The control assembly (50) and the power assembly (60) may be provided within the main body (11).

[0077] The control assembly (50) may include a control circuit that controls the operation of the display panel (20) and the backlight unit (100). The control circuit may process image data received from an external content source, transmit the image data to the display panel (20), and transmit dimming data to the backlight unit (100).

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

[0079] The control assembly (50) and the power assembly (60) may be implemented as printed circuit boards and various circuits mounted on the printed circuit board. For example, the power circuit may include capacitors, coils, resistors, processors, etc., and a power circuit board on which these are mounted. In addition, the control circuit may include memory, a processor, and a control circuit board on which these are mounted.

[0080] The display device (1) may include a display case that is provided to support various components of the main body (11). In other words, various components of the main body (11) may be accommodated inside the display case. The display case may form the outer shape of the display device (1).

[0081] For example, the display case may support a display panel (20). For example, the display case may support a backlight unit (100). For example, the display case may support a control assembly (50). For example, the display case may support a power assembly (60).

[0082] For example, the display device (1) may include a bottom chassis (15). The bottom chassis (15) may cover the rear of the display panel (20). The bottom chassis (15) may be combined with a middle mold (14). The bottom chassis (15) may support various components of the display device (1), such as a backlight unit (100), a control assembly (50), and a power assembly (60).

[0083] The bottom chassis (15) may be formed to have a roughly flat plate shape, but is not limited thereto. The bottom chassis (15) may be formed of a material with high thermal conductivity to dissipate heat generated from the light source (1100) to the outside. For example, the bottom chassis (15) may be formed of a metal material such as aluminum or SUS, or a plastic material such as ABS.

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

[0085] For example, the display device (1) may include a rear cover (16). The rear cover (16) is positioned at the rear of the bottom chassis (15) and may cover the bottom chassis (15) and various components mounted at the rear of the bottom chassis (15) (e.g., a control assembly (50), a power assembly (60), etc.).

[0086] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example for explaining the display device according to one embodiment of the present disclosure, and the present disclosure is not limited thereto.

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

[0088] Referring to FIG. 3, a display panel (20) included in a display device (1) according to one embodiment of the present disclosure is configured as a liquid crystal display (LCD) panel and may be arranged to block or allow light emitted from a backlight unit (100) to pass through. By the operation of the display panel (20) blocking or allowing light emitted from the backlight unit (100) to pass through, an image (I) may be formed in front of the display panel (20).

[0089] The front surface of the display panel (20) can form the screen (12) of the display device (1) described above. A plurality of pixels (P) can be provided on the display panel (20). The plurality of pixels (P) provided on the display panel (20) can independently block or transmit light from the backlight unit (100), and the light transmitted by the plurality of pixels (P) can form an image (I) displayed on the screen (12).

[0090] For example, as illustrated in FIG. 3, the display panel (20) may include a first polarizing film (21), a first transparent substrate (22), a pixel electrode (23), a thin film transistor (24), a liquid crystal layer (25), a common electrode (26), a color filter (27), a second transparent substrate (28), and a second polarizing film (29).

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

[0092] A first polarizing film (21) and a second polarizing film (29) may be provided on the outer side of the first and second transparent substrates (22, 28).

[0093] The first polarizing film (21) and the second polarizing film (29) can each transmit specific light and block other light. For example, the first polarizing film (21) transmits light having a magnetic field vibrating in a first direction and blocks other light. In addition, the second polarizing film (29) transmits light having a magnetic field vibrating in a second direction and blocks other light. At this time, the first direction and the second direction can be orthogonal to each other. Accordingly, the polarization direction of the light transmitted by the first polarizing film (21) and the vibration direction of the light transmitted by the second polarizing film (29) can be orthogonal to each other. As a result, light generally cannot simultaneously transmit through the first polarizing film (21) and the second polarizing film (29).

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

[0095] The color filter (27) may include, for example, a red filter (27R) that passes red light, a green filter (27G) that passes green light, and a blue filter (27G) that passes blue light, and the red filter (27R), the green filter (27G), and the blue filter (27B) may be arranged parallel to each other. The area where the color filter (27) is formed may correspond to the pixel (P) described above. The area where the red filter (27R) is formed may correspond to the red sub-pixel (P). R ) corresponds to the green sub-pixel (P), and the area where the green filter (27G) is formed is the green sub-pixel (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.

[0096] A pixel electrode (23) may be provided on the inner side of the first transparent substrate (22), and a common electrode (26) may be provided on the inner side of the second transparent substrate (28).

[0097] The pixel electrode (23) and the common electrode (26) are made of a metal material that conducts electricity, and can generate an electric field to change the arrangement of liquid crystal molecules (25a) that constitute the liquid crystal layer (25) to be described below.

[0098] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can transmit light incident from the outside. For example, the pixel electrode (23) and the common electrode (26) may be made of indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowire, carbon nanotube (CNT), graphene, or PEDOT (3,4-ethylenedioxythiophene). A thin film transistor (TFT) (24) may be provided on the inside of the second transparent substrate (22).

[0099] The thin film transistor (24) can pass or block current flowing through the pixel electrode (23). For example, an electric field can be formed or removed between the pixel electrode (23) and the common electrode (26) depending on whether the thin film transistor (24) is turned on (closed) or turned off (open).

[0100] The thin film transistor (24) can be composed of polysilicon and can be formed by a semiconductor process such as lithography, deposition, or ion implantation.

[0101] A liquid crystal layer (25) may be formed between the pixel electrode (23) and the common electrode (26). The liquid crystal layer (25) may be filled with liquid crystal molecules (25a).

[0102] Liquid crystals exhibit a state intermediate between that of a solid (crystal) and a liquid. Most liquid crystal substances are organic compounds, and their molecular structure is elongated and rod-shaped. While the arrangement of these molecules resembles an irregular state in some directions, they can form regular crystals in other directions. As a result, liquid crystals can exhibit both the fluidity of a liquid and the optical anisotropy of a crystal (solid).

[0103] In addition, liquid crystals can exhibit optical properties depending on changes in the electric field. For example, the direction of the arrangement of molecules constituting the liquid crystal can change depending on changes in the electric field. When an electric field is generated in the liquid crystal layer (25), the liquid crystal molecules (25a) of the liquid crystal layer (25) can be arranged according to the direction of the electric field. When an electric field is not generated in the liquid crystal layer (25), the liquid crystal molecules (25a) can be arranged irregularly or along an alignment layer (not shown). As a result, the optical properties of the liquid crystal layer (25) can vary depending on the presence or absence of an electric field passing through the liquid crystal layer (25).

[0104] The structure of the display panel (20) described above with reference to FIG. 3 is only an example of a structure that a display panel of a display device according to one embodiment of the present disclosure may have, and the present disclosure is not limited thereto.

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

[0106] Referring to FIG. 4, a display device (1) according to one embodiment of the present disclosure may include a plurality of light sources (1100) and a light source substrate (1200) on which the light sources (1100) are mounted. The plurality of light sources (1100) and the light source substrate (1200) may constitute a light source module (1000) of a backlight unit (100).

[0107] In FIG. 4, one light source (1100) among a plurality of light sources (1100) included in a light source module (1000) is illustrated in detail, and the description of the structure and function of the light source (1100) described below with reference to FIG. 4 can be commonly applied to each of the plurality of light sources (1100).

[0108] The light source (1100) may be arranged to irradiate light toward the display panel (20). The light source (1100) may include a device that, when supplied with power, can emit monochromatic light (light of a specific wavelength, for example, blue light) or white light (for example, light mixed with red light, green light, and blue light) in various directions. For example, the light source (1100) may include a light emitting diode (LED).

[0109] The light source substrate (1200) can fix a plurality of light sources (1100) so that the positions of the light sources (1100) do not change. In addition, the light source substrate (1200) can be electrically connected to the light sources (1100). The light source substrate (1200) can supply power to each light source (1100) for the light sources (1100) to emit light.

[0110] The light source substrate (1200) may be made of synthetic resin, reinforced glass, or a printed circuit board (PCB) that fixes a plurality of light sources (1100) and has conductive power supply lines formed thereon to supply power to the light sources (1100).

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

[0112] The reflective sheet (120) may be arranged in front of the light source substrate (1200). For example, the reflective sheet (120) may be adhered to the front surface of the light source substrate (1200). The reflective sheet (120) may include a plurality of through holes (120a) formed at positions corresponding to each of the plurality of light sources (1100) of the light source module (1000). As illustrated in FIG. 4, the light source (1100) may pass through the through holes (120a) and protrude toward the front of the reflective sheet (120). Accordingly, a portion of the light source (1100) and the light source substrate (1200) may be exposed toward the front of the reflective sheet (120) through the through holes (120a). With this configuration, the light source (1100) may emit light from the front of the reflective sheet (120). The through hole (120a) can be an LED hole (120a).

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

[0114] The process in which light emitted by multiple light sources (1100) or reflected by a reflective sheet (120) travels toward the display panel (20) is as described above.

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

[0116] The light source (1100) may include a light emitting diode (1101). The light emitting diode (1101) may include a P-type semiconductor and an N-type semiconductor for emitting light by recombination of holes and electrons. In addition, the light emitting diode (1101) may be provided with a pair of electrodes for supplying holes and electrons to the P-type semiconductor and the N-type semiconductor, respectively.

[0117] The light emitting diode (1101) may be configured to convert electrical energy into light energy. The light emitting diode (1101) may emit light having a maximum intensity at a predetermined wavelength based on the power supplied. For example, the light emitting diode (1101) may emit blue light having a peak value at a wavelength representing blue (e.g., a wavelength between 430 nm and 495 nm).

[0118] For example, a multilayer reflective structure in which a plurality of insulating films having different refractive indices are alternately laminated may be provided on the front surface of a light-emitting diode (1101). For example, such a multilayer reflective structure may be configured as a distributed Bragg reflector (DBR).

[0119] For example, the light emitting diode (1101) may be directly attached to the light source substrate (1200) in a chip-on-board (COB) manner. In other words, the light source (1100) may include a light emitting diode (1101) in which a light emitting diode chip or light emitting diode die is directly attached to the light source substrate (1200) without separate packaging.

[0120] The light source module (1000) can realize miniaturization of the light source (1100) by manufacturing a flip-chip type light emitting diode (1101) attached to a light source substrate (1200) in a chip-on-board manner.

[0121] The light source substrate (1200) may include a power supply line (1230) configured to supply power to the light source (1100). The power supply line (1230) may be configured to supply electrical signals and / or power from a control assembly (50) and / or a power assembly (60) to the light source (1100). As an example, the power supply line (1230) may be configured to supply power to a flip-chip type light emitting diode (1101).

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

[0123] A conductive layer of the light source substrate (1200) may be formed with lines or patterns through which power and / or electrical signals pass. The conductive layer may be composed of various electrically conductive materials. For example, the conductive layer may be composed of various metallic materials such as copper (Cu), tin (Sn), aluminum (Al), or alloys thereof. The power supply line (1230) may be implemented by a line or pattern formed on the conductive layer of the light source substrate (1200).

[0124] The dielectric of the insulating layer of the light source substrate (1200) can insulate between lines or patterns of the conductive layer. The insulating layer can be composed of a dielectric for electrical insulation, such as FR-4.

[0125] For example, a protection layer may be provided on the outer surface of the light source substrate (1200) to prevent or suppress damage to the light source substrate (1200) due to external impact, damage due to chemical action (e.g., corrosion, etc.), and / or damage due to optical action. For example, the protection layer of the light source substrate (1200) may include a photo solder resist (PSR).

[0126] The power supply line (1230) can be covered by a protective layer of the light source substrate (1200) to prevent it from being exposed to the outside.

[0127] For example, the light source substrate (1200) may include a power supply pad (1240) electrically connected to a power supply line (1230) to supply power to a flip-chip type light emitting diode (1101). The power supply line (1230) may be electrically connected to the light emitting diode (1101) via the power supply pad (1240).

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

[0129] For example, various conductive adhesive materials having electrical conductivity, such as solder or electrically conductive epoxy adhesives, may be applied between the electrode of the light-emitting diode (1101) and the power supply pad (1240).

[0130] The light source (1100) may include an optical dome (1102). The optical dome (1102) may cover a light emitting diode (1101). The optical dome (1102) may prevent or suppress damage to the light emitting diode (1101) due to external mechanical action and / or damage to the light emitting diode (1101) due to chemical action.

[0131] The optical dome (1102) may have, for example, a dome shape obtained by cutting a sphere with a plane that does not include its center, or a hemispherical shape obtained by cutting a sphere with a plane that includes its center. The vertical cross-section of the optical dome (1102) may be, for example, a segment or a semicircle.

[0132] The optical dome (1102) may be composed of silicone or epoxy resin. For example, molten silicone or epoxy resin may be ejected onto the light-emitting diode (1101) through a nozzle or the like, and the ejected silicone or epoxy resin may then be hardened to form the optical dome (1102).

[0133] The optical dome (1102) may be optically transparent or translucent. Light emitted from the light emitting diode (1101) may pass through the optical dome (1102) and be emitted to the outside.

[0134] At this time, for example, the dome-shaped optical dome (1102) can refract light like a lens. For example, light emitted from a light-emitting diode (1101) can be dispersed by being refracted by the optical dome (1102).

[0135] The structure of the light source module (1000), such as the light source (1100) and the light source substrate (1200), described above with reference to FIG. 4 is only an example of the structure that the light source module of the display device of the present disclosure may have, and the embodiment of the present disclosure is not limited thereto.

[0136] FIG. 5 is a diagram illustrating a light source substrate and a bottom chassis of a display device according to one embodiment of the present disclosure. FIG. 6 is an enlarged view of a display device according to one embodiment of the present disclosure. FIG. 7 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure. FIG. 8 is an enlarged view of a portion of a light source substrate of a display device according to one embodiment of the present disclosure.

[0137] Fig. 6 is an enlarged view of area A in the display device illustrated in Fig. 5. Fig. 7 is an enlarged view of area B in the display device illustrated in Fig. 6. Fig. 8 is a drawing of the display device illustrated in Fig. 7 with the bottom chassis omitted.

[0138] Referring to FIGS. 5 to 8, a display device (1) according to one embodiment of the present disclosure may include a plurality of light source modules (1000).

[0139] A plurality of light source modules (1000) may be arranged in front of the bottom chassis (15). The plurality of light source modules (1000) may each be mounted on the bottom chassis (15). For example, the plurality of light source modules (1000) may each be fixed to the bottom chassis (15) by a fixer (201) and a middle mold (14), and may be supported by the bottom chassis (15).

[0140] For example, a plurality of light source modules (1000) may be formed in shapes corresponding to each other. In other words, each of the plurality of light source modules (1000) may have approximately the same structure.

[0141] For example, among the plurality of light source modules (1000), a light source module (1000A) positioned on the right side (+Y direction side) of the display device (1) and a light source module (1000B) positioned on the left side (-Y direction side) of the display device (1) among the plurality of light source modules (1000) may be arranged to be opposite to each other in the vertical and horizontal directions (for example, to be positioned in a state where they are rotated 180 degrees relative to the X axis). According to this arrangement, the plurality of light source modules (1000) may be arranged to be symmetrical left and right with respect to the horizontal center of the display device (1), and brightness on both sides with respect to the horizontal center of the display device (1) may be uniformly provided.

[0142] As the plurality of light source modules (1000) are designed to have almost identical shapes, waste of parts can be prevented and the efficiency of the manufacturing process can be improved, thereby reducing the manufacturing cost.

[0143] However, this is not limited thereto, and at least some of the plurality of light source modules (1000) may be formed to have different shapes.

[0144] Although FIG. 6 illustrates an example in which a display device (1) includes eight light source modules (1000), the number of light source modules (1000) included in the display device (1) is not limited to that shown in FIG. 6. For example, the number of light source modules (1000) included in the display device (1) may be greater or less than that shown in FIG. 6. Alternatively, for example, the display device (1) may include only one integrally formed light source module (1000).

[0145] Below, the structure of one light source module (1000) among the plurality of light source modules (1000) will be described in detail. In one embodiment, the structure of one light source module (1000) described below can be applied to each of the plurality of light source modules (1000).

[0146] A light source module (1000) of a display device (1) according to one embodiment of the present disclosure may include a plurality of substrate bars (1220).

[0147] The substrate bar (1220) may be a configuration that forms at least a portion of the light source substrate (1200) described above and may include a printed circuit board having a shape extending in one direction.

[0148] At least a portion of a plurality of light sources (1100) may be mounted on each of the plurality of substrate bars (1220). At least a portion of the plurality of light sources (1100) may be mounted on the front surface of the plurality of substrate bars (1220). Here, the front surface of the plurality of substrate bars (1220) may mean one surface of the plurality of substrate bars (1220) facing the display panel (20).

[0149] A plurality of substrate bars (1220) may be composed of a printed circuit board on which a light source (1100) is mounted and the aforementioned power supply line (1230) is provided.

[0150] A plurality of substrate bars (1220) may be arranged to be spaced apart from each other. The plurality of substrate bars (1220) may be arranged to be spaced apart from each other along one direction (Z). For example, one direction (Z) in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other may be approximately parallel to the vertical direction (e.g., up-down direction) of the display device (1). The plurality of substrate bars (1220) may be arranged to be parallel at a position spaced apart from each other. The direction in which the plurality of substrate bars (1220) are arranged may be a second direction (Z) or a third direction (-Z).

[0151] Each of the plurality of substrate bars (1220) may be formed to have approximately a bar shape. For example, each of the plurality of substrate bars (1220) may have a width in the second direction (Z) or the third direction (-Z), and may extend in a direction (Y) different from the second and third directions (Z, -Z). The direction in which the plurality of substrate bars (1220) extend may be the first direction (Y). For example, each of the plurality of substrate bars (1220) may have a shape in which a length in the first direction (Y) is longer than a width in the second direction (Z) or the third direction (-Z).

[0152] For example, the width direction of each of the plurality of substrate bars (1220) may be approximately parallel to the vertical direction (e.g., up-down direction) of the display device (1). For example, the direction in which each of the plurality of substrate bars (1220) extends may be approximately parallel to the horizontal direction (e.g., left-right direction) of the display device (1).

[0153] For example, the direction in which each of the plurality of substrate bars (1220) extends may be parallel to the long side direction of the display device (1). For example, the width direction of each of the plurality of substrate bars (1220) may be parallel to the short side direction of the display device (1).

[0154] The direction in which the plurality of substrate bars (1220) are arranged spaced apart from each other may be parallel to the respective width directions. In other words, the plurality of substrate bars (1220) may be arranged spaced apart from each other along the first direction (Z), which is the respective width direction.

[0155] Each of the plurality of substrate bars (1220) may extend in a direction different from the direction in which the plurality of substrate bars (1220) are spaced apart from each other. For example, each of the plurality of substrate bars (1220) may extend in a direction (Y direction) orthogonal to the direction (Z direction) in which the plurality of substrate bars (1220) are spaced apart from each other. For example, the first direction, the second direction, and the third direction described above may be directions orthogonal to each other. Additionally, for example, the second direction and the third direction may be directions parallel to each other.

[0156] In contrast, the direction in which the plurality of substrate bars (1220) are arranged spaced apart from each other and the direction in which each of the plurality of substrate bars (1220) extends have a predetermined angle with each other, but the angle may not be exactly perpendicular.

[0157] For example, a plurality of substrate bars (1220) may be arranged so that the distances spaced apart from each other in the second direction (Z) are uniform. In other words, the distances in the second direction (Z) between adjacent pairs of substrate bars (1220) among the plurality of substrate bars (1220) may all be approximately the same. As a result, the uniformity of the luminance of the display device (1) may be improved.

[0158] For example, the plurality of substrate bars (1220) may be formed to have shapes that correspond to each other. For example, the plurality of substrate bars (1220) may have widths that correspond to each other in the second direction (Z direction). For example, the plurality of substrate bars (1220) may have lengths that correspond to each other extending in the first direction (Y direction). For example, the plurality of substrate bars (1220) may be formed to have sizes that correspond to each other.

[0159] For example, each of the plurality of substrate bars (1220) can be mounted on the bottom chassis (15). As each of the plurality of substrate bars (1220) is mounted on the bottom chassis (15) and maintains a fixed position, the plurality of light sources (1100) mounted on the plurality of substrate bars (1220) can be stably positioned at their respective designed positions.

[0160] A reflective sheet (120) may be attached to the front surface of each of the plurality of substrate bars (1220).

[0161] The light source module (1000) of the display device (1) may include a substrate body (1210). The substrate body (1210) may be a configuration that forms a portion of the light source substrate (1200) described above and may include a printed circuit board.

[0162] A plurality of substrate bars (1220) may be connected to a substrate body (1210). The plurality of substrate bars (1220) may be supported by the substrate body (1210). For example, the plurality of substrate bars (1220) may be connected to one side of the substrate body (1210).

[0163] A plurality of substrate bars (1220) may extend from the substrate body (1210). For example, each of the plurality of substrate bars (1220) may extend in a first direction (Y) from the substrate body (1210). For example, each of the plurality of substrate bars (1220) may extend from one side of the substrate body (1210) in the first direction (Y).

[0164] For example, the substrate body (1210) may extend along the second direction (Z). For example, the substrate body (1210) may have a shape in which the length in the second direction (Z) is longer than the width in the first direction (Y). In this case, the substrate body (1210) may have a structure in which a greater number of substrate bars (1220) are connected as the substrate body (1210) extends along the direction in which the plurality of substrate bars (1220) are arranged. In addition, in this case, the plurality of substrate bars (1220) may have a shape in which each of the substrate bars (1220) extends longer as it extends from one side in the first direction (Y), which is the width direction of the substrate body (1210) (e.g., the direction in which the length is relatively short).

[0165] For example, the substrate body (1210) may be mounted on the bottom chassis (15). In addition, the substrate body (1210) may be positioned between the middle mold (14) and the bottom chassis (15) and fixed within the display device (1). As the substrate body (1210) maintains a fixed position, the plurality of light sources (1100) mounted on the substrate body (1210) may be stably positioned at their respective designed positions. In addition, the plurality of substrate bars (1220) connected to the substrate body (1210) may be more stably supported by the substrate body (1210).

[0166] For example, some of the plurality of light sources (1100) may be mounted on the substrate body (1210). Some of the plurality of light sources (1100) may be mounted on the front surface of the substrate body (1210). Here, the front surface of the substrate body (1210) may mean one surface of the substrate body (1210) facing the display panel (20).

[0167] The substrate body (1210) may be composed of a printed circuit board on which a light source (1100) is mounted and the aforementioned power supply line (1230) is provided.

[0168] A reflective sheet (120) may be attached to the front surface of the substrate body (1210). For example, an integral reflective sheet (120) may be attached to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220). In this case, the uniformity of brightness due to light reflected by the reflective sheet (120) may be improved, and the process of attaching the reflective sheet (120) to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220) may be simplified. However, the present invention is not limited thereto, and a plurality of reflective sheets (120) that are distinct from each other may be attached to the front surfaces of the substrate body (1210) and the plurality of substrate bars (1220).

[0169] The display device (1) may include a connector (1300). The connector (1300) may be electrically connected to a plurality of light sources (1100). The connector (1300) may be electrically connected to a light source substrate (1200). The connector (1300) may be electrically connected to various electronic components mounted on the light source substrate (1200), such as a plurality of light sources (1100), along a power supply line (1230) provided on the light source substrate (1200). Accordingly, the connector (1300) may transmit an electrical signal transmitted from the control assembly (50) to various electronic components mounted on the light source substrate (1200), such as a plurality of light sources (1100), and may transmit power supplied from the power assembly (60) to various electronic components mounted on the light source substrate (1200), such as a plurality of light sources (1100). In other words, the light source module (1000) can be electrically connected to the control assembly (50) and / or the power assembly (60) via the connector (1300).

[0170] For example, the connector (1300) may be mounted on the substrate body (1210). For example, the connector (1300) may be mounted on the back surface of the substrate body (1210) facing the bottom chassis (15).

[0171] As described above, since a reflective sheet (120) may be attached to the front surface of the substrate body (1210), when the connector (1300) is mounted on the front surface of the substrate body (1210), a portion of the reflective sheet (120) at a position corresponding to the mounting position of the connector (1300) may interfere with the connector (1300), thereby deteriorating the uniformity of the brightness of the display device (1). In contrast, in one embodiment of the present disclosure, since the connector (1300) is mounted on the back surface of the substrate body (1210), deterioration of the uniformity of the brightness of the display device (1) can be prevented.

[0172] For example, the substrate body (1210) and the plurality of substrate bars (1220) may be formed integrally with each other. In other words, the substrate body (1210) and the plurality of substrate bars (1220) may be connected to each other to form an integral light source substrate (1200). The light source substrate (1200) may be formed as an integral printed circuit board including the substrate body (1210) and the plurality of substrate bars (1220). However, alternatively, the substrate body (1210) and the plurality of substrate bars (1220) may be connected through a process of assembling each other as separate components that are not formed integrally with each other.

[0173] The structure of the light source module (1000), such as the substrate body (1210) and substrate bar (1220) described above, is only an example, and the present disclosure is not limited thereto.

[0174] For example, each of the plurality of substrate bars (1220) may extend in the -Y direction from the substrate body (1210), or the plurality of substrate bars (1220) may extend in the +Y direction from the substrate body (1210).

[0175] Additionally, although an embodiment is shown in which the substrate body (1210) extends in the vertical direction (Z direction) of the display device (1), the present invention is not limited thereto, and for example, the substrate body (1210) may extend in the horizontal direction (Y direction).

[0176] In addition, although an embodiment is illustrated in which each of the plurality of substrate bars (1220) extends in a horizontal direction (Y direction) from one side of the substrate body (1210) in the horizontal direction (Y direction), the present invention is not limited thereto, and for example, each of the plurality of substrate bars (1220) may extend in a vertical direction (Z direction) from one side of the substrate body (1210) in the vertical direction (Z direction). In this case, the plurality of substrate bars (1220) may be arranged to be spaced apart from each other in the horizontal direction (Y direction).

[0177] In addition, unlike what has been described above, the second direction, which is the width direction of each of the plurality of substrate bars (1220), or the second direction in which the plurality of substrate bars (1220) are arranged to be spaced apart from each other, or the second direction in which the substrate body (1220) extends, or the first direction in which each of the plurality of substrate bars (1220) extends, may not be parallel to either the vertical direction (Z direction) or the horizontal direction (Y direction) of the display device (1).

[0178] However, for convenience of explanation, the second direction is described based on an embodiment in which the second direction is parallel to the vertical direction (Z direction) of the display device (1), and the first direction is parallel to the horizontal direction (Y direction) of the display device (1).

[0179] Below, the position and structure of one of the plurality of substrate bars (1220) are described. The structure of the substrate bar (1220) described below can be applied to correspond to the structure of each of the plurality of substrate bars (1220).

[0180] The substrate bar (1220) may be arranged between the middle mold (14) and the bottom chassis (15) in one direction. For example, at least a portion of the substrate bar (1220) may be arranged between the middle mold (14) and the bottom chassis (15) in the front-back direction. The middle mold (14), the substrate bar (1220), and the bottom chassis (15) may be arranged sequentially along the front-back direction.

[0181] The substrate bar (1220) may include a central extension portion (1221) extending in one direction and protrusions (1222, 1223) protruding from the central extension portion (1221). The central extension portion (1221) and the protrusions (1222, 1223) may each constitute a portion of the light source substrate (1200) as a portion of the substrate bar (1220).

[0182] The central extension (1221) may extend in a first direction (e.g., the Y direction and / or the -Y direction). The width direction of the central extension (1221) may be parallel to the second and third directions (e.g., the Z direction and / or the -Z direction). The central extension (1221) may have a shape in which the extension length in the first direction (e.g., the Y direction) is longer than the width in the second direction (e.g., the Z direction).

[0183] A central extension (1221) may be provided at the center of the substrate bar (1220). The central extension (1221) may include a region extending through the center of the substrate bar (1220) in a first direction (e.g., Y direction).

[0184] For example, the central extension (1221) may include an area having a roughly rectangular bar shape.

[0185] The substrate bar (1220) may include a plurality of first protrusions (1222) that protrude from one side (the first side) of the central extension (1221). Each of the plurality of first protrusions (1222) may protrude from one side of the central extension (1221) in a second direction (e.g., the Z direction). Each of the plurality of first protrusions (1222) may extend from the central extension (1221) in the second direction (e.g., the Z direction). For example, each of the plurality of first protrusions (1222) may extend upward from an upper side of the central extension (1221).

[0186] For example, the first protrusion (1222) can be formed integrally with the central extension (1221).

[0187] A plurality of first protrusions (1222) may be arranged relative to each other along a first direction (e.g., Y direction). For example, a plurality of first protrusions (1222) may be arranged such that their positions in the second direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0188] For example, a plurality of first protrusions (1222) may be arranged at equal intervals along a first direction (e.g., Y direction).

[0189] For example, the plurality of first protrusions (1222) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of first protrusions (1222) protruding from the central extension (1221) in the second direction (e.g., the Z direction) may correspond to each other.

[0190] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of first protrusions (1222). Hereinafter, the light source mounted on each of the plurality of first protrusions (1222) is referred to as a first-side light source (1110). For example, one first-side light source (1110) may be mounted on one first protrusion (1222), but is not limited thereto. The first-side light source (1110) may be the first light source (1110).

[0191] A plurality of first side light sources (1110) may be arranged at positions spaced apart from the central extension (1221) in the second direction (Z direction). The plurality of first side light sources (1110) may be arranged to be deflected upward from the central extension (1221).

[0192] A plurality of first-side light sources (1110) may be arranged relative to each other along the first direction (Y direction). For example, a plurality of first-side light sources (1110) may be arranged such that their positions in the second direction (Z) correspond to each other.

[0193] For example, a plurality of first side light sources (1110) can be arranged at equal intervals along the first direction (Y direction).

[0194] The substrate bar (1220) may include a plurality of second protrusions (1223) protruding from the other side (second side) of the central extension (1221). Each of the plurality of second protrusions (1223) may protrude from the other side of the central extension (1221) in the second direction (Z direction). The other side of the central extension (1221) as referred to herein means a side different from one side of the central extension (1221) from which the first protrusions (1222) protrude.

[0195] Each of the plurality of second protrusions (1223) may extend in a second direction (Z direction) from the central extension (1221). For example, each of the plurality of second protrusions (1223) may extend downward from the lower side of the central extension (1221).

[0196] For example, the second protrusion (1223) may be formed integrally with the central extension (1221).

[0197] A plurality of second protrusions (1223) may be arranged relative to each other along the first direction (Y direction). For example, a plurality of second protrusions (1223) may be arranged such that their positions in the second direction (Z) (e.g., the vertical height of the display device (1)) correspond to each other.

[0198] For example, a plurality of second protrusions (1223) may be arranged at equal intervals along the first direction (Y direction).

[0199] For example, the plurality of second protrusions (1223) may be formed to have shapes that correspond to each other. For example, the lengths of each of the plurality of second protrusions (1223) that protrude in the second direction (Z direction) from the central extension (1221) may correspond to each other.

[0200] Some of the plurality of light sources (1100) mounted on the substrate bar (1220) may be mounted on the plurality of second protrusions (1223). Hereinafter, the light source mounted on each of the plurality of second protrusions (1223) is referred to as a second-side light source (1120). For example, one second-side light source (1120) may be mounted on one second protrusion (1223), but is not limited thereto. The second-side light source (1120) may be the second light source (1120).

[0201] A plurality of second side light sources (1120) may be arranged at positions spaced apart from the central extension (1221) in the second direction (Z direction). The plurality of second side light sources (1120) may be arranged to be deflected downward from the central extension (1221).

[0202] A plurality of second-side light sources (1120) may be arranged relative to each other along the first direction (Y direction). For example, the plurality of second-side light sources may be arranged so that their positions in the second direction (Z) correspond to each other.

[0203] For example, a plurality of second side light sources (1120) can be arranged at equal intervals along the first direction (Y direction).

[0204] For example, the first side light source (1110) and the second side light source (1120) may be provided in the same number.

[0205] Here, some areas of the central extension (1221) from which the plurality of first protrusions (1222) protrude and other areas of the central extension (1221) from which the plurality of second protrusions (1223) extend may be arranged to intersect along the first direction (Y direction). In other words, the first protrusions (1222) and the second protrusions (1223) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first protrusions (1222) and the plurality of second protrusions (1223) may be arranged so as not to be parallel to each other in the second direction (Z).

[0206] With this configuration, the first side light source (1110) and the second side light source (1120) can be arranged to intersect each other along the first direction (Y direction). In one substrate bar (1220), the plurality of light sources (1100) can be arranged such that the first side light source (1110) is arranged on one side in the second direction (Z) and the second side light source (1120) is arranged on the other side so as to intersect each other along the first direction (Y direction), thereby improving the uniformity of brightness by the plurality of light sources (1100). In other words, the plurality of light sources (1100) in one substrate bar (1220) can be arranged in a zigzag pattern. For example, the first side light source (1110) and the second side light source (1120) can be arranged in a zigzag pattern.

[0207] As the plurality of light sources (1100) are arranged as described above in each substrate bar (1220), the distance between adjacent light sources (1100) in a pair of adjacent substrate bars (1220) among the plurality of substrate bars (1220) can be reduced, and the brightness and uniformity of brightness of the display device (1) can be improved.

[0208] The substrate bar (1220) may include a plurality of first recessed portions (1224). Each of the plurality of first recessed portions (1224) may be formed between a pair of adjacent first protrusions (1222) among the plurality of first protrusions (1222).

[0209] A plurality of first recessed portions (1224) may be provided on one side of the central extension portion (1221) in the second direction (Z). For example, a plurality of first recessed portions (1224) may be provided on the upper side of the central extension portion (1221).

[0210] The plurality of first recessed portions (1224) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relative to the plurality of first protrusions (1222).

[0211] A plurality of first recessed portions (1224) may be arranged relative to each other along the first direction (Y direction). For example, a plurality of first recessed portions (1224) may be arranged such that their positions in the second direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0212] For example, a plurality of first recessed portions (1224) may be arranged at equal intervals along the first direction (Y direction).

[0213] For example, a plurality of first recessed portions (1224) can be formed to have shapes that correspond to each other.

[0214] The substrate bar (1220) may include a plurality of second recessed portions (1225). Each of the plurality of second recessed portions (1225) may be formed between a pair of adjacent second protrusions (1223) among the plurality of second protrusions (1223).

[0215] A plurality of second recessed portions (1225) may be provided on the other side of the central extension portion (1221) in the second direction (Z). The other side of the central extension portion (1221) as referred to here means a side different from one side of the central extension portion (1221) where the first recessed portion (1224) is provided. For example, a plurality of second recessed portions (1225) may be provided on the lower side of the central extension portion (1221).

[0216] The plurality of second recessed portions (1225) can be formed to have a shape that is concavely sunken inwardly toward the central extension portion (1221) relatively compared to the plurality of second protrusions (1223).

[0217] A plurality of second recessed portions (1225) may be arranged along the first direction (Y direction). For example, a plurality of second recessed portions (1225) may be arranged so that their positions in the second direction (Z) (i.e., the vertical height of the display device (1)) correspond to each other.

[0218] For example, a plurality of second recessed portions (1225) may be arranged at equal intervals along the first direction (Y direction).

[0219] For example, a plurality of second recessed portions (1225) can be formed to have shapes that correspond to each other.

[0220] Some areas of the central extension (1221) having a plurality of first recessed portions (1224) provided on one side and other areas of the central extension (1221) having a plurality of second recessed portions (1225) provided on the other side may be arranged to intersect along the first direction (Y direction). For example, the first recessed portions (1224) and the second recessed portions (1225) may be arranged to intersect each other. In one substrate bar (1220), the plurality of first recessed portions (1224) and the plurality of second recessed portions (1225) may be arranged not to be parallel to each other in the second direction (Z).

[0221] For example, each of the plurality of first protrusions (1222) may be arranged parallel to one of the plurality of second recessed portions (1225) that is closest to the plurality of second recessed portions (1225) in the second direction (Z). For example, the plurality of first protrusions (1222) and the plurality of second recessed portions (1225) may be arranged parallel to each other in the second direction (Z).

[0222] Also, as an example, each of the plurality of second protrusions (1223) may be arranged parallel to one of the plurality of first recesses (1224) that is closest to the plurality of first recesses (1224) in the second direction (Z). For example, the plurality of second protrusions (1223) and the plurality of first recesses (1224) may be arranged parallel to each other in the second direction (Z).

[0223] Due to this, the substrate bar (1220) can have a shape that extends in a zigzag pattern overall.

[0224] The shape of each protrusion (1222, 1223) of the substrate bar (1220) and the shape of each recess (1224, 1225) may be different. Accordingly, the efficiency of the process for manufacturing the light source substrate (1200) may be improved. For example, when performing a process for manufacturing a plurality of light source substrates (1200A, 1200B) from a base substrate (1200M), when the shapes of each protrusion (1222aa, 1222bb) and each recess (1224, 1225) arranged side by side are different from each other rather than the same, it may be easier to separate the substrate bars (1220A, 1220B) included in different light source substrates (1200A, 1200B). Through this, the manufacturing cost of the product may be reduced.

[0225] Some of the plurality of substrate bars (1220) may have different shapes from the plurality of light sources (1100) to the plurality of first protrusions (1222) and different shapes from the plurality of light sources (1100) to the plurality of second protrusions (1223).

[0226] For example, some of the plurality of substrate bars (1220) may have different shapes of edges of the plurality of first protrusions (1222) and shapes of the plurality of second protrusions (1223).

[0227] Some of the plurality of substrate bars (1220) may have different distances (d1) from the plurality of light sources (1100) to the edges (and / or borders, perimeters, outer surfaces) of the plurality of first protrusions (1222) and different distances (d2) from the plurality of light sources (1100) to the edges (and / or borders, perimeters, outer surfaces) of the plurality of second protrusions (1223).

[0228] The 'edge of the first protrusion (1222)' or 'outer surface of the first protrusion (1222)' mentioned here refers to a part of the outer edge of the substrate bar (1220), and means the outer edge of the portion of the substrate bar (1220) where the first protrusion (1222) is provided. The 'edge of the first protrusion (1222)' may be used in a corresponding meaning with terms such as 'outline of the first protrusion (1222)' or 'profile of the first protrusion (1222).

[0229] Likewise, the 'edge of the second protrusion (1223)' or 'outer surface of the second protrusion (1223)' mentioned here means a part of the outer edge portion of the substrate bar (1220), that is, the outer edge portion of the portion where the second protrusion (1223) is provided in the substrate bar (1220). The 'edge of the second protrusion (1223)' may be used in a corresponding meaning with terms such as 'outline of the second protrusion (1223)' or 'profile of the second protrusion (1223).

[0230] The distance from each of the plurality of light sources (1100) to the edge of each of the plurality of first protrusions (1222) and the distance from each of the plurality of light sources (1100) to the edge of each of the plurality of second protrusions (1223) may be different from each other in the second direction (Z).

[0231] The plurality of light sources (1100) may include a first light source (1110) arranged on a first protrusion (1222) of a plurality of substrate bars (1220), and a second light source (1120) arranged on a second protrusion (1223) of a plurality of substrate bars (1220). The shape from the first light source (1110) to the edge of the first protrusion (1222) and the shape from the second light source (1120) to the edge of the second protrusion (1223) may be different.

[0232] For example, the second direction (Z) distance from the first light source (1110) to the edge of the first protrusion (1222) and the second direction (Z) distance from the second light source (1120) to the edge of the second protrusion (1223) may be different. However, the present invention is not limited thereto, and the second direction (Z) shape and / or distance from the first light source (1110) to the edge of the first protrusion (1222) and the second direction (Z) shape and / or distance from the second light source (1120) to the edge of the second protrusion (1223) may be the same.

[0233] The plurality of substrate bars (1220) may include a first substrate bar (1220aa) and a second substrate bar (1220bb) (see FIGS. 7 and 8).

[0234] The first substrate bar (1220aa) may include a plurality of first substrate bars (1220aa). The plurality of first substrate bars (1220aa) may be arranged at a first end along the second direction and a first end along the third direction. For example, among the plurality of first substrate bars (1220aa), the first substrate bar (1220aa) may be arranged at an upper end among the plurality of substrate bars (1220). In addition, for example, among the plurality of first substrate bars (1220aa), the first substrate bar (1220aa) may be arranged at a lower end among the plurality of substrate bars (1220).

[0235] The second substrate bar (1220bb) may be arranged between a plurality of first substrate bars (1220aa) in the vertical direction (or left-right direction). For example, the second substrate bar (1220bb) may include a plurality of second substrate bars (1220bb). Accordingly, the plurality of second substrate bars (1220bb), excluding the upper first substrate bar (1220aa) and the lower first substrate bar (1220aa), may have the same distance from the first light source (1110c) to the first protrusion (1222c) and the same distance from the second light source (1120c) to the second protrusion (1223c).

[0236] Among the plurality of first substrate bars (1220aa), the upper first substrate bar (1220aa) may have a distance from the first light source (1110aa) of the first substrate bar (1220aa) to the edge of the first protrusion (1222aa) greater than the distance from the second light source (1120aa) of the upper first substrate bar (1220aa) to the edge of the second protrusion (1223aa). Among the plurality of first substrate bars (1220aa), the distance from the second light source (1120aa) of the lower first substrate bar (1220aa) to the edge of the second protrusion (1223aa) may be greater than the distance from the first light source (1110aa) of the lower first substrate bar (1220aa) to the edge of the first protrusion (1223aa).

[0237] The distance from the first light source (1110bb) of the second substrate bar (1220bb) to the edge of the first protrusion (1222bb) and the distance from the second light source (1120bb) of the second substrate bar (1220bb) to the edge of the second protrusion (1223bb) may be the same.

[0238] For example, the distance from the first light source (1110a) of the upper first substrate bar (1220aa) to the edge of the first protrusion (1222a) and the distance from the second light source (1120a) of the lower first substrate bar (1220aa) to the edge of the second protrusion (1223a) may be greater than the distance from the first light source (1110bb) of the second substrate bar (1220bb) to the edge of the first protrusion (1222bb) and the distance from the second light source (1120bb) to the edge of the second protrusion (1223bb).

[0239] The first protrusion (1222aa) of the upper first substrate bar (1220aa) on which the first light source (1110aa) is arranged may be arranged between the middle mold (14) and the bottom chassis (15). In addition, the second protrusion (1223aa) of the lower first substrate bar (1220aa) on which the second light source (1120bb) is arranged may be arranged between the middle mold (14) and the bottom chassis (15).

[0240] Accordingly, since the central extension (1221bb) of the second substrate bar (1220bb) has a longer length and a wider area than the central extension (1221aa) of the first substrate bar (1220aa), a supporter for supporting the optical member (140) can be placed on the central extension (1221bb) of the second substrate bar (1220bb).

[0241] Accordingly, according to the disclosure, the display device (1) can not only stably fix the light source substrate (1200), but also place various components including a supporter on the light source substrate (1200).

[0242] FIG. 9 is a flowchart illustrating a method for manufacturing a light source device of a display device according to an embodiment of the present disclosure. FIG. 10 is a schematic diagram illustrating a process for manufacturing a light source device of a display device according to an embodiment of the present disclosure. FIG. 11 is a schematic diagram illustrating a process for manufacturing a light source device of a display device according to an embodiment of the present disclosure.

[0243] FIG. 10 is a drawing of preparing a base substrate in a method for manufacturing a light source device according to one embodiment of the present disclosure. FIG. 11 is a drawing of processing a base substrate in a method for manufacturing a light source device according to one embodiment of the present disclosure.

[0244] Referring to FIGS. 9 to 11, a light source substrate (1200) of a light source device (100) of a display device (1) according to one embodiment of the present disclosure can be manufactured by a method of manufacturing a plurality of light source substrates (1200A, 1200B) from one substrate material (1200M). One substrate material (1200M) can include a base substrate (1200M).

[0245] A method for manufacturing a light source device according to one embodiment may include preparing a base substrate (1200M) (910). In addition, the method for manufacturing a light source device according to one embodiment may include forming a first light source substrate (1200A) and a second light source substrate (1200B) on the base substrate (1200M) (920). For example, a plurality of light source substrates (1200A, 1200B) may be formed, illustrated, and / or designed on the base substrate (1200M). The base substrate (1200M) may be provided in an integral plate shape. For example, a plurality of light source substrates (1200A, 1200B) to be manufactured may be illustrated on the base substrate (1200M). For example, a plurality of light source substrates (1200A, 1200B) can be a pair of light source substrates (1200A, 1200B).

[0246] A first light source substrate (1200A) and a second light source substrate (1200B) may be provided on a base substrate (1200M). The first light source substrate (1200A) and the second light source substrate (1200B) may be a plurality of light source substrates (1200A, 1200B).

[0247] The first light source substrate (1200A) and the second light source substrate (1200B) may each include a substrate body (1210A, 1210B) and a substrate bar (1220A, 1220B). For example, the first light source substrate (1200A) may include a first substrate body (1210A) and a first substrate bar (1220A). The second light source substrate (1200B) may include a second substrate body (1210B) and a second substrate bar (1220B).

[0248] The first substrate body (1210A) may extend in a first direction (-Z). The first substrate bar (1220A) may extend from the first substrate body (1210A) in a second direction (Y). The first substrate bar (1220A) may be provided in multiple numbers.

[0249] The second substrate body (1210B) may extend in a first direction (-Z). The second substrate bar (1220B) may extend from the second substrate body (1210B) in a third direction (-Y). For example, the second direction (Y) and the third direction (-Y) may be opposite. The second substrate bar (1220B) may be provided in multiple numbers.

[0250] For example, a plurality of light source substrates (1200A, 1200B) may be illustrated symmetrically at 180 degrees to each other on a base substrate (1200M). The plurality of light source substrates (1200A, 1200B) may have their respective substrate bars (1220) arranged alternately. Among the plurality of substrate bars (1220) provided on one light source substrate (e.g., 1200A) of the plurality of light source substrates (1200A, 1200B), one of the substrate bars (1220) provided on another light source substrate (e.g., 1200B) may be illustrated to be positioned between adjacent substrate bars (1220). In other words, the substrate bars (1220) provided on one of the plurality of light source substrates (1200A, 1200B) and the substrate bars (1220) provided on the other may be arranged to intersect each other.

[0251] In addition, the plurality of light source substrates (1200A, 1200B) may have their respective substrate bodies (1210) positioned on opposite sides. For example, the first substrate body (1210A) of the first light source substrate (1200A) and the second substrate body (1210B) of the second light source substrate (1200B) may be positioned on opposite sides. For example, the first substrate body (1210A) may be provided on the -Y side, and the second substrate body (1210B) may be provided on the +Y side.

[0252] A method for manufacturing a light source device according to one embodiment may include cutting (930) a base substrate (1200M). For example, the base substrate (1200M) may be divided into a plurality of light source substrates (1200A, 1200B) by cutting along the edges of the plurality of light source substrates (1200A, 1200B).

[0253] For example, a tool (T) that penetrates and cuts a base substrate (1200M) can move along the edges of a plurality of light source substrates (1200A, 1200B) and perform a cutting process to separate the plurality of light source substrates (1200A, 1200B).

[0254] The base substrate (1200M) can be cut through a routing process. For example, the tool (T) can be a variety of processing devices such as a router.

[0255] The tool (T) can be partitioned by moving along the boundary between the substrate bars (1220) of each of the plurality of light source substrates (1200A, 1200B) and forming a gap (g) between the plurality of light source substrates (1200A, 1200B). The gap (g) can be formed as the tool (T) moves along the boundary between the substrate bars (1220). The gap (g) can have a width approximately corresponding to the thickness of the tool (T).

[0256] When a gap (g) is formed by a tool (T), a plurality of substrate bars (1220A, 1220B) positioned adjacently with the gap (g) therebetween may be formed with protrusions (1222, 1223) and recesses (1224, 1225), respectively. A protrusion (1223) formed in one substrate bar (1220A) and a recess (1224) formed in another substrate bar (1220B) may face each other in the Z direction (e.g., width direction) of the substrate bar (1220). In addition, a recess (1225) formed in one substrate bar (1220A) and a protrusion (1222) formed in another substrate bar (1220B) may face each other in the Z direction (e.g., width direction) of the substrate bar (1220).

[0257] Here, a difference in curvature radius may occur between the protrusions (1222, 1223) and the recessed portions (1224, 1225) facing each other. For example, the curvature radius of the protrusions (1222, 1223) may be smaller than the curvature radius of the recessed portions (1224, 1225). The difference in the respective curvature radii of the protrusions (1222, 1223) and the recessed portions (1224, 1225) may approximately correspond to the thickness of the tool (T) or the thickness of the gap (g).

[0258] If the radius of curvature of the protrusions (1222, 1223) is not smaller than the radius of curvature of the recesses (1224, 1225), an additional cutting process may be required to match the designed curvature even after the tool (T) performs cutting by passing the boundary between the plurality of substrate bars (1220A, 1220B) once. However, as in the case of one embodiment of the present disclosure, since the radius of curvature of the protrusions (1222, 1223) is designed to be smaller than the radius of curvature of the recesses (1224, 1225), even if the tool (T) performs cutting by passing the boundary between the plurality of substrate bars (1220A, 1220B) only once, the protrusions (1222, 1223) and the recesses (1224, 1225) can be naturally formed to have the designed curvature due to the thickness of the tool (T).

[0259] The thickness of the tool (T) used in this step can be appropriately set by considering the difference in the radius of curvature of the protrusions (1222, 1223) and the recessed portions (1224, 1225).

[0260] By this method, the process of separating the substrate bars (1220A, 1220B) included in the plurality of light source substrates (1200A, 1200B) from the base substrate (1200M) can be further simplified. In addition, the portions unnecessarily removed during the process of manufacturing the plurality of light source substrates (1200A, 1200B) from the base substrate (1200M) can be reduced, and waste of materials can be prevented, thereby promoting cost reduction. Through this, the manufacturing cost of the product can be reduced.

[0261] FIG. 12 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure. FIG. 13 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure. FIG. 14 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0262] FIG. 12 is a drawing after processing a base substrate in a method for manufacturing a light source device according to an embodiment of the present disclosure. FIG. 13 is a drawing after processing a base substrate in a method for manufacturing a light source device according to an embodiment of the present disclosure, showing a state after region C of the base substrate illustrated in FIG. 10 has been processed. FIG. 14 is a drawing after processing a base substrate in a method for manufacturing a light source device according to an embodiment of the present disclosure, showing a state after region D of the base substrate illustrated in FIG. 10 has been processed.

[0263] Referring to FIGS. 9, 12, and 14, a method for manufacturing a light source device according to one embodiment may include cutting a base substrate (1200M) (930) to form a plurality of bridges (1250) connecting the first light source substrate (1200A) and the second light source substrate (1200B). The bridges (1250) may include connecting ribs and connecting members.

[0264] For example, in one embodiment, the tool (T) may be moved to form edges of a plurality of light source substrates (1200A, 1200B) and cut the base substrate (1200M) so that a bridge (1250) remains. The bridge (1250) may include a plurality of bridges (1250). The bridges (1250) may be arranged to connect the plurality of light source substrates (1200A, 1200B) to each other. For example, the bridges (1250) may connect the substrate bars (1220A, 1220B) of each of the plurality of light source substrates (1200A, 1200B) to each other. Additionally, for example, the bridge (1250) can connect the first substrate body (1210A) and the second substrate bar (1220B), and can connect the second substrate body (1210B) and the first substrate bar (1220A).

[0265] For example, the bridge (1250) can connect the first substrate body (1210A) and one end of the second substrate bar (1220B) along the third direction (-Y). Also, for example, the bridge (1250) can connect the second substrate body (1210B) and one end of the first substrate bar (1220A) along the second direction (Y).

[0266] The first substrate bar (1220A) may include a plurality of first substrate bars (1220A), and the second substrate bar (1220B) may include a plurality of second substrate bars (1220B). Each end of the plurality of first substrate bars (1220A) may be connected to the second substrate body (1210B) via a bridge (1250). In addition, each end of the plurality of second substrate bars (1220B) may be connected to the first substrate body (1210A) via a bridge (1250).

[0267] The plurality of bridges (1250) may include a first bridge (1251), a second bridge (1252), and a third bridge (1253).

[0268] The first bridge (1251) is provided between the first substrate body (1210A) and the second substrate bar (1220B) and can connect the first substrate body (1210A) and the second substrate bar (1220B). The second bridge (1252) is provided between the second substrate body (1210B) and the first substrate bar (1220A) and can connect the second substrate body (1210B) and the first substrate bar (1220A).

[0269] The first bridge (1251) and the second bridge (1252) may correspond. For example, the first bridge (1251) and the second bridge (1252) may be positioned 180 degrees apart from each other.

[0270] The third bridge (1253) is provided between the first substrate bar (1220A) and the second substrate bar (1220B) and can connect the first substrate bar (1220A) and the second substrate bar (1220B) (see FIG. 18).

[0271] Since one end of the substrate bar (1220A, 1220B) is connected to the substrate body (1210A, 1210B), the substrate bar (1220A, 1220B) may not shake during the solder printing process of applying solder to the base substrate (1200M) described later, and the solder (1240) may be placed and / or applied at an accurate position (see FIGS. 16 and 17).

[0272] Since the substrate bars (1220A, 1220B) of each of the plurality of light source substrates (1200A, 1200B) are connected by a bridge (1250), the light source substrates (1200A, 1200B) can be more easily managed when storing or transporting the light source substrates (1200A, 1200B).

[0273] For example, the bridge (1250) may be arranged to connect the protrusions (1222, 1223) or recesses (1224, 1225) that face each other in adjacent substrate bars (1220A, 1220B). For example, the bridge (1250) may connect the shortest edge of the protrusions (1222, 1223) in the direction of protrusion from the central extension (1221) of the substrate bar (1220) and the edge of the part that is most adjacent in the width direction to the central extension (1221) of the recessed portions (1224, 1225).

[0274] FIG. 15 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure. FIG. 16 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure. FIG. 17 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to one embodiment of the present disclosure.

[0275] Referring to FIGS. 9 and 15 to 17, a method for manufacturing a light source device according to one embodiment may include placing (940) a mask pattern (1300) on a base substrate (1200M) in which a bridge (1250) is formed by cutting. The base substrate (1200M) may include a first surface (1201) that is placed on and supported by a floor or the like, and a second surface (1202) opposite to the first surface (1201). For example, the mask pattern (1300) may be placed on the second surface (1202) of the base substrate (1200M).

[0276] The mask pattern (1300) may include a first surface (1301) and a second surface (1302) positioned opposite the first surface (1301). For example, the first surface (1301) may face downward, and the second surface (1302) may face upward. The second surface (1202) of the base substrate (1200M) and the first surface (1301) of the mask pattern (1300) may be in contact.

[0277] The mask pattern (1300) may have an opening (1310). The opening (1310) may be formed by penetrating the mask pattern (1300). The opening (1310) may correspond to a position where various components, such as a light source, are to be electrically connected to the base substrate (1200M). For example, the opening (1310) may be formed corresponding to a position where solder (1400) is to be applied to the base substrate (1200M). Therefore, the mask pattern (1300) and the base substrate (1200M) must be positioned at the correct positions so that the solder (1400) is applied at an appropriate position, and various components, such as a light source, can be electrically connected to the light source substrate at an appropriate position.

[0278] A method for manufacturing a light source device according to one embodiment may include placing (940) solder (1400) on a mask pattern (1300). For example, the solder (1400) may be placed on a second surface (1302) of the mask pattern (1300). Although the solder (1400) is illustrated in the drawing only on one side of the second surface (1302) of the mask pattern (1300), the location of the solder (1400) is not limited thereto, and the solder (1400) may be placed at various locations on the second surface of the mask pattern (1300).

[0279] A method for manufacturing a light source device according to one embodiment may include pressing (950) solder (1400) onto a base substrate (1200M). The solder (1400) may be pressed in one direction so as to be introduced into an opening (1310). For example, the solder (1400) may contact one surface of a pressing member (1500) and may be moved in one direction by the pressing member (1500), and the moved solder (1400) may flow into the opening (1310). The solder (1400) that has flowed into the opening (1310) may be disposed on a second surface of the base substrate (1200M).

[0280] For example, the pressing member (1500) can move the solder (1400) from the first substrate body (1210A) through the first substrate bar (1220A) and the second substrate bar (1220B) toward the second substrate body (1210B). Also, for example, the pressing member (1500) can move the solder (1400) from the second substrate body (1210B) through the first substrate bar (1220A) and the second substrate bar (1220B) toward the first substrate body (1210A).

[0281] When the pressurizing member (1500) moves the solder (1400), force may also be applied to the mask pattern (1300) and the base substrate (1200M), so that the base substrate (1200M) may move slightly, causing the opening (1310) of the mask pattern (1300) to correspond to a position different from the component mounting position of the base substrate (1200M). For example, while the substrate body (1210A, 1210B) and the far substrate bar (1220B, 1220A) are being pressed, the solder (1400) may be applied to a position that does not correspond to the correct position where the component of the base substrate (1200M) should be mounted due to shaking.

[0282] However, according to one embodiment, one end of each of the plurality of first substrate bars (1220A) can be connected to the second substrate body (1210B) through a bridge (1250), and one end of each of the plurality of second substrate bars (1220B) can be connected to the first substrate body (1210A) through a bridge (1250), so that solder (1400) can be prevented from being applied to a location where component mounting positions of the base substrate (1200M) do not correspond to each other.

[0283] For example, since one end of the first substrate bar (1220A) adjacent to the second substrate body (1210B) and the second substrate body (1210B) are connected through a bridge (1250), movement of the one end of the first substrate bar (1220A) adjacent to the second substrate body (1210B) can be minimized, so that solder (1400) can be applied appropriately to the component mounting position of the base substrate (1200M). In addition, for example, since one end of the second substrate bar (1220B) adjacent to the first substrate body (1210A) and the first substrate body (1210A) are connected through a bridge (1250), movement of the one end of the second substrate bar (1220B) adjacent to the first substrate body (1210A) can be minimized, so that solder (1400) can be applied appropriately to the component mounting position of the base substrate (1200M).

[0284] FIG. 18 is an enlarged view of a base substrate in a display device according to an embodiment of the present disclosure. FIG. 19 is an enlarged view of a base substrate in a display device according to an embodiment of the present disclosure. FIG. 20 is an enlarged view of a base substrate in a display device according to an embodiment of the present disclosure. FIG. 21 is a schematic diagram illustrating a manufacturing process of a light source device in a display device according to an embodiment of the present disclosure.

[0285] Fig. 18 is an enlarged view of the E region of the base substrate illustrated in Fig. 12. Fig. 19 is an enlarged view of the F region of the base substrate illustrated in Fig. 13. Fig. 20 is an enlarged view of the G region of the base substrate illustrated in Fig. 14. Fig. 21 illustrates separating the first light source substrate and the second light source substrate.

[0286] Referring to FIGS. 9, 18, and 21, a method for manufacturing a light source device according to one embodiment may include forming a hole (970) in a bridge (1250). The hole may include a guide hole (1260).

[0287] The third bridge (1253) may be provided between the first substrate bar (1220A) and the second substrate bar (1220B) to connect the first substrate bar (1220A) and the second substrate bar (1220B). For example, the third bridge (1253) may be provided between the second protrusion (1223A) of the first substrate bar (1220A) and the first recess (1224B) of the second substrate bar (1220B) to connect the first substrate bar (1220A) and the second substrate bar (1220B) (see FIG. 18). However, the position of the third bridge (1253) is not limited to the above-described example. For example, the third bridge (1253) may be positioned between the recessed portion (1224, 1225) of the first substrate bar (1220A) and the protruding portion (1222, 1223) of the second substrate bar (1220B) to connect the first substrate bar (1220A) and the second substrate bar (1220B).

[0288] For example, a guide hole (1260) may be formed in the third bridge (1253). The guide hole (1260) formed in the third bridge (1253) may be a third guide hole (1260). The third guide hole (1260) may include a plurality of third guide holes (1260). In addition, the third guide hole (1260) may be formed between the third bridge (1253) and the substrate bars (1220A, 1220B).

[0289] The first bridge (1251) is provided between one end of the first substrate body (1210A) and the second substrate bar (1220B) and can connect the first substrate body (1210A) and the second substrate bar (1220B). However, the position of the first bridge (1251) is not limited to the above-described example.

[0290] In addition, for example, a guide hole (1260) may be formed in a first bridge (1251) connecting one end of a first substrate body (1210A) and a second substrate bar (1220B) (see FIG. 19). The guide hole (1260) formed in the first bridge (1251) may be a first guide hole (1260). The first guide hole (1260) may include a plurality of first guide holes (1260). In addition, the first guide hole (1260) may be formed between the first bridge (1251) and the first substrate body (1210A) and / or between the first bridge (1251) and one end (1226) of the second substrate bar (1220B) along the third direction.

[0291] The second bridge (1252) is provided between the second substrate body (1210B) and one end of the first substrate bar (1220A) to connect the second substrate body (1210B) and the first substrate bar (1220A). However, the position of the first bridge (1251) is not limited to the above-described example.

[0292] In addition, for example, a guide hole (1260) may be formed in a second bridge (1252) connecting one end of a second substrate body (1210B) and a first substrate bar (1220A) (see FIG. 20). The guide hole (1260) formed in the second bridge (1252) may be a second guide hole (1260). Since the second bridge (1252) may correspond to the first bridge (1251), the second guide hole (1260) may correspond to the first guide hole (1260). The second guide hole (1260) may include a plurality of second guide holes (1260). Additionally, the second guide hole (1260) may be formed between the second bridge (1252) and the second substrate body (1210B) and / or between the second bridge (1252) and one end (1226) of the first substrate bar (1220A) along the second direction.

[0293] For example, the guide hole (1260) may be formed by drilling through the base substrate (1200M) and / or the bridge. However, the method for forming the guide hole (1260) is not limited to the above-described example. A method for manufacturing a light source device according to one embodiment may further include forming a hole in the bridge (1250) and then mounting components such as a light source on the base substrate (1200M).

[0294] The guide hole (1260) can guide the separation of the first light source substrate (1200A) and the second light source substrate (1200B) when the user or the manufacturer separates the base substrate (1200M) into the first light source substrate (1200A) and the second light source substrate (1200B) so that the separation of the first light source substrate (1200A) and the second light source substrate (1200B) can be easily performed. In addition, the guide hole (1260) can ensure that the cutting surface is cut smoothly and can minimize the generation of foreign substances (burrs) due to cutting. Since the foreign substances are reduced, the possibility of defects occurring due to the foreign substances in the process of electrically connecting the components to the light source substrates (1200A, 1200B) can be reduced.

[0295] A plurality of guide holes (1260) may be provided. In the drawing, 12 guide holes (1260) are illustrated, but the number of guide holes (1260) is not limited to that illustrated.

[0296] For example, the diameter of the guide hole (1260) may be 0.1 to 0.3 mm. When the diameter of the guide hole (1260) is 0.1 to 0.3 mm, the cut surface of the substrate (1200A, 1200B) is smooth, and the occurrence of foreign substances (burrs) due to cutting can be significantly reduced. However, the diameter of the guide hole (1260) is not limited to the above-described example.

[0297] A method for manufacturing a light source device according to one embodiment may include separating a first light source substrate (1200A) and a second light source substrate (1200B) (980).

[0298] The user and / or manufacturer can separate the plurality of light source substrates (1200A, 1200B) connected by the bridge (1250) by removing the bridge (1250) when necessary.

[0299] In this case, a cut surface may be formed by removing a bridge (1250) on at least some of the protrusions (1222, 1223) or recesses (1224, 1225) provided on the substrate bars (1220A, 1220B) provided on the plurality of light source substrates (1200A, 1200B). The position at which these cut surfaces are formed may vary depending on the position of the bridge (1250). For example, the cut surfaces may be formed on the shortest edge of the protrusions (1222, 1223) in the direction protruding from the central extension (1221) of the substrate bar (1220), and may be formed on the edge of the part that is closest to the central extension (1221) of the recesses (1224, 1225) in the width direction. According to one embodiment, a guide hole (1260) may be formed in a bridge (1250) of a base substrate (1200M). The guide hole (1260) may be formed in a bridge (1250) that connects a plurality of light source substrates so that the light source substrates can be easily separated and the cut surface can be smooth.

[0300] When the bridge (1250) is removed in the above manner, the plurality of light source substrates (1200A, 1200B) can be completely separated from each other as shown in FIG. 19.

[0301] By this process, a plurality of light source substrates (1200A, 1200B) can be manufactured from a base substrate (1200M), thereby preventing waste of materials and reducing manufacturing costs.

[0302] In one embodiment, a method for manufacturing a light source device (100) including a first light source substrate (1200A) and a second light source substrate (1200B), each including a substrate body and a substrate bar extending from the substrate body, is provided, wherein the first light source substrate (1200A) includes a first substrate body (1210A) extending in a first direction (-Z) on a base substrate (1200M) and a first substrate bar (1220A) extending in a second direction (Y) from the first substrate body, and the second light source substrate (1200B) includes a second substrate body (1210B) extending in the first direction and a second substrate bar (1220B) extending in a third direction (-Y) opposite to the second direction from the second substrate body so as to be alternately arranged with the first substrate bar, and a plurality of light source substrates connecting the first light source substrate and the second light source substrate are formed (920). The method includes cutting the base substrate (930) to form a bridge (1250), arranging a mask pattern (1300) having an opening (1310) on the cut base substrate (940), arranging solder (1400) on the mask pattern (950), and pressing the solder on the mask pattern (960) so that the solder is introduced into the opening, and cutting the base substrate (930) to form the plurality of bridges may include cutting the base substrate so that the plurality of bridges connect the first substrate body of the first light source substrate and one end of the second substrate bar of the second light source substrate along the third direction.

[0303] Cutting the base substrate to form the plurality of bridges (930) may include cutting the base substrate so that the plurality of bridges connect the second substrate body of the second light source substrate and one end of the first substrate bar of the first light source substrate along the second direction.

[0304] Pressurizing the solder on the mask pattern (960) so that the solder is introduced into the opening may include moving a pressing member for pressing the solder in the second direction from the first substrate body toward the second substrate body.

[0305] The first substrate bar includes a plurality of first substrate bars (1220A), the second substrate bar includes a plurality of second substrate bars (1220B) arranged alternately with the plurality of first substrate bars, and cutting the base substrate to form the plurality of bridges (930) may include cutting the base substrate to connect each of the plurality of first substrate bars and each of the plurality of second substrate bars.

[0306] It may further include forming a guide hole (1260) in the above plurality of bridges (1250) (970).

[0307] The plurality of bridges provided between the first substrate body and the second substrate bar may include a first bridge (1251), and may include a plurality of first guide holes (1260) formed in one end of the first substrate body along the second direction and one end of the second substrate bar along the third direction in the first bridge.

[0308] Cutting the base substrate to form the plurality of bridges (930) includes cutting the base substrate so that the plurality of bridges connect the second substrate body of the second light source substrate and one end of the first substrate bar of the first light source substrate along the second direction, and the plurality of bridges provided between the second substrate body and the first substrate bar may include a second bridge (1252), and may include a plurality of second guide holes (1260) formed in the one end of the second substrate body along the third direction and the one end of the first substrate bar along the second direction in the second bridge.

[0309] Cutting the base substrate to form the plurality of bridges (930) includes cutting the base substrate to connect the first substrate bar and the second substrate bar, and the plurality of bridges provided between the first substrate bar and the second substrate bar may include a third bridge (1253), and the third bridge may include a plurality of third guide holes (1260) formed at one end of the first substrate bar along the first direction and one end of the second substrate bar along the fourth direction opposite to the first direction.

[0310] The above plurality of first guide holes, second guide holes, and third guide holes may have a diameter of 0.1 to 0.3 mm.

[0311] The first substrate bar (1220A) may include a central extension portion (1221) extending in the second direction, a first protrusion portion (1222) protruding from the central extension portion in a fourth direction opposite to the first direction so that a light source may be mounted, and a second protrusion portion (1223) protruding from the central extension portion in the first direction so that a light source may be mounted, and the second substrate bar (1220B) may include a central extension portion (1221) extending in the third direction, a first protrusion portion (1222) protruding from the central extension portion in the fourth direction so that a light source may be mounted, and a second protrusion portion (1223) protruding from the central extension portion in the first direction so that a light source may be mounted.

[0312] The first protrusion of the first substrate bar includes a plurality of first protrusions, the second protrusion of the first substrate bar includes a plurality of second protrusions, and the first substrate bar further includes a plurality of first recessed portions (1224), each of which is formed between a pair of first protrusions that are adjacent to each other among the plurality of first protrusions, and a plurality of second recessed portions (1225), each of which is formed between a pair of second protrusions that are adjacent to each other among the plurality of second protrusions, and the first protrusion of the second substrate bar includes a plurality of first protrusions, and the second protrusion of the second substrate bar includes a plurality of second protrusions, and the second substrate bar further includes a plurality of first recessed portions (1224), each of which is formed between a pair of first protrusions that are adjacent to each other among the plurality of first protrusions, and a plurality of second recessed portions (1225), each of which is formed between a pair of second protrusions that are adjacent to each other among the plurality of second protrusions. there is.

[0313] In one embodiment, a method for manufacturing a light source device including a first light source substrate and a second light source substrate, each of which includes a substrate body and a substrate bar extending from the substrate body, comprises: forming the first light source substrate including a first substrate body extending in a first direction on a base substrate and a first substrate bar extending in a second direction from the first substrate body, and the second light source substrate including a second substrate body extending in the first direction and a second substrate bar extending in a third direction opposite to the second direction from the second substrate body so as to be alternately arranged with the first substrate bar (920), cutting the base substrate to form a plurality of bridges connecting the first light source substrate and the second light source substrate (930), arranging a mask pattern having an opening on the cut base substrate (940), arranging solder on the mask pattern (950), pressurizing the solder on the mask pattern so that the solder is introduced into the opening (960), and forming a guide on the plurality of bridges It may include forming a hole (970).

[0314] The plurality of bridges provided between the first substrate body and the second substrate bar may include a first bridge (1251), and may include a plurality of first guide holes (1260) formed in one end of the first substrate body along the second direction and one end of the second substrate bar along the third direction in the first bridge.

[0315] Cutting the base substrate to form the plurality of bridges (930) includes cutting the base substrate so that the plurality of bridges connect the second substrate body of the second light source substrate and one end of the first substrate bar of the first light source substrate along the second direction, and the plurality of bridges provided between the second substrate body and the first substrate bar may include a second bridge (1252), and may include a plurality of second guide holes (1260) formed in the one end of the second substrate body along the third direction and the one end of the first substrate bar along the second direction in the second bridge.

[0316] Cutting the base substrate to form the plurality of bridges (930) includes cutting the base substrate to connect the first substrate bar and the second substrate bar, and the plurality of bridges provided between the first substrate bar and the second substrate bar may include a third bridge (1253), and the third bridge may include a plurality of third guide holes (1260) formed at one end of the first substrate bar along the first direction and one end of the second substrate bar along the fourth direction opposite to the first direction.

[0317] The above plurality of first guide holes, second guide holes, and third guide holes may have a diameter of 0.1 to 0.3 mm.

[0318] In one embodiment, a method for manufacturing a light source device including a first light source substrate including a first substrate body extending in a first direction on a base substrate and a first substrate bar extending in a second direction from the first substrate body, and a second light source substrate including a second substrate body extending in the first direction and a second substrate bar extending in a third direction opposite to the second direction from the second substrate body, the method comprising: cutting the base substrate to form a plurality of bridges connecting one end of the first substrate body and the second substrate bar along the third direction and one end of the second substrate body and the first substrate bar along the second direction; arranging a mask pattern having an opening on the cut base substrate (940); arranging solder on the mask pattern (950); and pressing the solder on the mask pattern so that the solder is introduced into the opening (960); and connecting one end of the first substrate body along the second direction and the second light source substrate of the plurality of bridges to the bridges (930). It may include forming a plurality of guide holes (970) in each of one end of the second substrate bar along the third direction and one end of the second substrate body along the third direction among the plurality of bridges and one end of the first substrate bar along the second direction.

[0319] The above plurality of guide holes (1260) may have a diameter of 0.1 to 0.3 mm.

[0320] The first substrate bar (1220A) may include a central extension portion (1221) extending in the second direction, a first protrusion portion (1222) protruding from the central extension portion in a fourth direction opposite to the first direction so that a light source may be mounted, and a second protrusion portion (1223) protruding from the central extension portion in the first direction so that a light source may be mounted, and the second substrate bar (1220B) may include a central extension portion (1221) extending in the third direction, a first protrusion portion (1222) protruding from the central extension portion in the fourth direction so that a light source may be mounted, and a second protrusion portion (1223) protruding from the central extension portion in the first direction so that a light source may be mounted.

[0321] The first protrusion of the first substrate bar includes a plurality of first protrusions, the second protrusion of the first substrate bar includes a plurality of second protrusions, and the first substrate bar further includes a plurality of first recessed portions (1224), each of which is formed between a pair of first protrusions that are adjacent to each other among the plurality of first protrusions, and a plurality of second recessed portions (1225), each of which is formed between a pair of second protrusions that are adjacent to each other among the plurality of second protrusions, and the first protrusion of the second substrate bar includes a plurality of first protrusions, and the second protrusion of the second substrate bar includes a plurality of second protrusions, and the second substrate bar further includes a plurality of first recessed portions (1224), each of which is formed between a pair of first protrusions that are adjacent to each other among the plurality of first protrusions, and a plurality of second recessed portions (1225), each of which is formed between a pair of second protrusions that are adjacent to each other among the plurality of second protrusions. there is.

[0322] According to one aspect of the present disclosure, a light source device, a method for manufacturing the same, and a display device including the light source device are provided, wherein one end of a substrate bar far from a substrate body on a base substrate is connected to another substrate body, thereby reducing a defect rate in a process of producing the light source device.

[0323] According to one aspect of the present disclosure, a plurality of light source substrates can be easily and neatly cut through guide holes, thereby reducing the defect rate in the process of producing the light source device, a method for manufacturing the same, and a display device including the light source device are provided.

[0324] The above has illustrated and described specific embodiments. However, the present invention is not limited to the above-described embodiments, and those skilled in the art will appreciate that various modifications and implementations can be made without departing from the spirit and scope of the technical ideas of the present invention as set forth in the claims below.

Claims

1. A method for manufacturing a light source device including a first light source substrate and a second light source substrate, each of which includes a substrate body and a substrate bar extending from the substrate body, Forming a first light source substrate including a first substrate body extending in a first direction on a base substrate and a first substrate bar extending in a second direction from the first substrate body, and a second light source substrate including a second substrate body extending in the first direction and a second substrate bar extending in a third direction opposite to the second direction from the second substrate body so as to be alternately arranged with the first substrate bars; The base substrate is cut to form a plurality of bridges connecting the first light source substrate and the second light source substrate; A mask pattern having an opening is placed on the cut base substrate; Placing solder on the above mask pattern; and comprising: pressurizing the solder on the mask pattern so that the solder is introduced into the opening; A method for manufacturing a light source device, wherein cutting the base substrate to form the plurality of bridges includes cutting the base substrate so that the plurality of bridges connect one end of the first substrate body of the first light source substrate and the second substrate bar of the second light source substrate along the third direction.

2. In paragraph 1, A method for manufacturing a light source device, wherein cutting the base substrate to form the plurality of bridges includes cutting the base substrate so that the plurality of bridges connect the second substrate body of the second light source substrate and one end of the first substrate bar of the first light source substrate along the second direction.

3. In paragraph 2, A method for manufacturing a light source device, wherein pressing the solder on the mask pattern so that the solder is injected into the opening includes moving a pressing member that pressurizes the solder in the second direction from the first substrate body toward the second substrate body.

4. In paragraph 3, The above first substrate bar comprises a plurality of first substrate bars, The second substrate bar includes a plurality of second substrate bars arranged alternately with the plurality of first substrate bars, A method for manufacturing a light source device, wherein cutting the base substrate to form the plurality of bridges includes cutting the base substrate to connect each of the plurality of first substrate bars and each of the plurality of second substrate bars.

5. In paragraph 1, A method for manufacturing a light source device further comprising forming guide holes in the plurality of bridges.

6. In paragraph 5, A plurality of bridges provided between the first substrate body and the second substrate bar include a first bridge, A method for manufacturing a light source device, comprising: a plurality of first guide holes formed at one end of the first substrate body along the second direction and at one end of the second substrate bar along the third direction in the first bridge.

7. In paragraph 6, Cutting the base substrate to form the plurality of bridges includes cutting the base substrate so that the plurality of bridges connect the second substrate body of the second light source substrate and one end of the first substrate bar of the first light source substrate along the second direction. A plurality of bridges provided between the second substrate body and the first substrate bar include a second bridge, A method for manufacturing a light source device, comprising: a plurality of second guide holes formed in one end of the second substrate body along the third direction and one end of the first substrate bar along the second direction in the second bridge.

8. In paragraph 7, Cutting the base substrate to form the plurality of bridges includes cutting the base substrate to connect the first substrate bar and the second substrate bar, The plurality of bridges provided between the first substrate bar and the second substrate bar include a third bridge, A method for manufacturing a light source device, comprising: a plurality of third guide holes formed at one end of the first substrate bar in the first direction and at one end of the second substrate bar in the fourth direction opposite to the first direction in the third bridge.

9. In paragraph 8, A method for manufacturing a light source device, wherein the plurality of first guide holes, second guide holes, and third guide holes have a diameter of 0.1 to 0.3 mm.

10. In paragraph 1 or paragraph 5, The above first substrate bar, A central extension extending in the second direction; A first protrusion protruding in a fourth direction opposite to the first direction from the central extension so that a light source is mounted; and Including a second protrusion protruding in the first direction from the central extension so that a light source is mounted; The above second substrate bar, A central extension extending in the third direction; A first protrusion protruding in the fourth direction from the central extension so that a light source is mounted; and A method for manufacturing a light source device, comprising: a second protrusion protruding in the first direction from the central extension so that a light source is mounted; 11. In paragraph 10, The first protrusion of the first substrate bar includes a plurality of first protrusions, The second protrusion of the first substrate bar includes a plurality of second protrusions, The above first substrate bar, A plurality of first recessed portions, each of which is formed between a pair of adjacent first protrusions among the plurality of first protrusions; and Each of the plurality of second recessed portions further includes a plurality of second recessed portions formed between a pair of adjacent second protrusions among the plurality of second protrusions; The first protrusion of the second substrate bar includes a plurality of first protrusions, The second protrusion of the second substrate bar includes a plurality of second protrusions, The above second substrate bar, A plurality of first recessed portions, each of which is formed between a pair of adjacent first protrusions among the plurality of first protrusions; and A method for manufacturing a light source device, further comprising: a plurality of second recessed portions, each of which is formed between a pair of adjacent second protrusions among the plurality of second protrusions.

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