Display apparatus

Abstract

The display apparatus comprises: a reflective sheet; a light source substrate including a first light source substrate and a second light source substrate and disposed on the reflective sheet; and a plurality of light sources including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate. A first distance between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources is greater than or equal to two times a second distance and less than or equal to four times the second distance. The second distance is a distance between adjacent first light sources among the plurality of first light sources.

Description

display device

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

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

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

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

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

[0006] A display device with improved assembly is provided.

[0007] Additionally, a display device with improved brightness is provided.

[0008] Additionally, a display device with reduced material costs is provided.

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

[0010] A display device according to the invention comprises a reflective sheet, a first light source substrate, and a second light source substrate, and a light source substrate on the reflective sheet, and a plurality of light sources including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate. A first distance between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources is at least twice a second distance and at most four times a second distance. The second distance is a distance between adjacent first light sources among the plurality of first light sources.

[0011] A display device according to the invention includes a bottom chassis, a reflective sheet disposed in front of the bottom chassis, a first light source substrate disposed in front of the reflective sheet, a second light source substrate disposed in front of the reflective sheet and arranged vertically with respect to the first light source substrate, a plurality of first light sources mounted on the first light source substrate, and a plurality of second light sources mounted on the second light source substrate. A first distance among distances between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources is set to be at least two times and at most four times the second distance between the plurality of first light sources.

[0012] FIG. 1 illustrates a display device according to one embodiment of the present disclosure.

[0013] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0014] FIG. 3 illustrates an enlarged cross-section of a portion of a display module of a display device according to one embodiment of the present disclosure.

[0015] FIG. 4 illustrates the interior of a display device according to one embodiment of the present disclosure.

[0016] FIG. 5 is an exploded view illustrating a portion of a display device according to one embodiment of the present disclosure.

[0017] FIG. 6 illustrates a front view of a portion of a display device according to one embodiment of the present disclosure.

[0018] FIG. 7 is an enlarged view of part A shown in FIG. 6 according to one embodiment of the present disclosure.

[0019] FIG. 8 illustrates a state in which the third light source substrate is separated from the connector in FIG. 7 according to one embodiment of the present disclosure.

[0020] FIG. 9 schematically illustrates a light profile of one light source among a plurality of light sources of a light source module of a display device according to one embodiment of the present disclosure.

[0021] FIG. 10 is an enlarged view of part B shown in FIG. 6 according to one embodiment of the present disclosure.

[0022] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this specification at the time of filing of this application.

[0023] Additionally, the same reference numbers or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0024] Additionally, the singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0025] Additionally, in this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0026] Additionally, the terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," and "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0027] In addition, the terminology used in this specification is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprise" or "have" and the like are intended to specify the presence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0028] Additionally, terms including ordinal numbers such as “first,” “second,” etc. used herein may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related listed items or any item among a plurality of related listed items.

[0029] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0030] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0031] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0032] Meanwhile, the terms "up-down direction", "front-back direction", etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the terms "front" and "rear" below may be defined based on the X direction shown in the drawings, respectively. The terms "upper" and "lower" below may be defined based on the Z direction shown in the drawings, respectively. The terms "left direction" and "right direction" below may be defined based on the Y direction shown in the drawings, respectively. The term "vertical direction" below may mean the Z direction shown in the drawings, respectively, and the term "horizontal direction" below may mean the Y direction shown in the drawings, respectively.

[0033] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0034] FIG. 1 illustrates a display device according to one embodiment of the present disclosure.

[0035] Referring to FIG. 1, a display device (1) according to one embodiment of the present disclosure is a device that processes an image signal received from the outside and can visually display the processed image. In FIG. 1, the display device (1) is exemplified as a television (TV), but is not limited thereto. For example, the display device (1) can be implemented in various forms such as a monitor, which is a type of computer output device, a portable multimedia device, a portable communication device, etc., and the form of the display device (1) is not limited as long as it is a device that visually displays an image.

[0036] 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.

[0037] In Fig. 1, the display device (1) is described as a flat display device with a flat screen as an example, but is not limited thereto, and the display device according to the concept of the present disclosure can also be applied to a curved display device or a bendable or flexible display device in which the flat state and the curved state can be changed. In addition, the configuration of the present disclosure can be applied to display devices of various shapes regardless of the screen size or ratio of the display device.

[0038] 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.

[0039] 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.

[0040] As illustrated in FIG. 1, the display device (1) may include a main body (11) and a screen (12) that displays an image (I).

[0041] 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.

[0042] 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).

[0043] The display device (1) can be configured to display an image (I). For example, 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.

[0044] 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.

[0045] Each of the plurality of pixels (P) can emit light of various brightness and colors. For example, each of the plurality of pixels (P) can include sub-pixels (PR, PG, PB), and the sub-pixels (PR, PG, PB) can include a red sub-pixel (PR) that can emit red light, a green sub-pixel (PG) that can emit green light, and a blue sub-pixel (PB) that can emit blue light. For example, the red light can represent light with a wavelength of approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, the green light can represent light with a wavelength of approximately 495 nm to 570 nm, and the blue light can represent light with a wavelength of approximately 450 nm to 495 nm.

[0046] Each of the plurality of pixels (P) can emit light of various brightness and colors by combining the light emitted from the red sub-pixel (PR), the green sub-pixel (PG), and the blue sub-pixel (PB), respectively.

[0047] FIG. 2 is an exploded view of a display device according to one embodiment of the present disclosure.

[0048] 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.

[0049] For example, the display device (1) may include a display panel (20). The display panel (20) may be provided on the main body (11). The display panel (20) may be provided to display an image (I). The screen (12) described in FIG. 1 may be formed on the front surface of the display panel (20).

[0050] For example, the display panel (20) may have an approximately 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 substantially equal.

[0051] 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.

[0052] In a display device (1) according to one embodiment of the present disclosure, the display panel (20) may be configured as a panel of a light-emitting display type such as a liquid crystal display (LCD).

[0053] On one side of the display panel (20), a cable (20a) for transmitting image data to the display panel (20) and a display driver integrated circuit (DDI) (30) (hereinafter referred to as a 'driver IC') for processing digital image data and outputting an analog image signal may be provided.

[0054] 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.

[0055] 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).

[0056] 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).

[0057] A detailed description of the structure of the display panel (20) will be described later.

[0058] The display device (1) may include a backlight unit (100) configured to irradiate light toward the display panel (20). The backlight unit (100) may be provided in the main body (11). The backlight unit (100) may be arranged at the rear of the display panel (20) and configured to irradiate light toward the front where the display panel (20) is located. Specifically, the backlight unit (100) may be configured as a surface light source. The display panel (20) may block or allow light emitted from the backlight unit (100) to pass through.

[0059] 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.

[0060] As illustrated in FIG. 2, the backlight unit (100) may include a light source module (110). The light source module (110) may generate and emit light. For example, the light source module (110) may be configured to emit monochromatic light or white light.

[0061] The light source module (110) may include a plurality of light sources (116, 117, 118) arranged to irradiate light and a light source substrate (111, 112, 113) on which the plurality of light sources (116, 117, 118) are mounted. (See FIG. 4, etc.)

[0062] A detailed description of the light source module (110) will be described later.

[0063] As illustrated in FIG. 2, the backlight unit (100) may include a reflective sheet (120) configured to reflect light. The reflective sheet (120) may reflect light forward or in a direction close to the forward direction.

[0064] For example, the light source module (110) (e.g., the light sources (116, 117, 118) of the light source module (110), see FIG. 4) can emit light in various directions in front of the reflective sheet (120). The light emitted from the light source module (110) can be emitted not only toward the diffusion plate (130) described later, but also toward the reflective sheet (120) from the light source module (110), and the reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffusion plate (130).

[0065] According to one embodiment, when light emitted from a light source module (110) passes through various objects such as a diffuser plate (130) and an optical sheet (140), some of the light may be reflected from the surfaces of the diffuser plate (130) and the optical sheet (140), and the reflective sheet (120) may reflect the light forward again.

[0066] As illustrated in FIG. 2, the backlight unit (100) may include a diffuser plate (130) configured to uniformly diffuse light. The diffuser plate (130) may be provided in front of the light source module (110) and the reflective sheet (120). The diffuser plate (130) may evenly disperse light emitted from the light source module (110) and then emit the light forward.

[0067] As illustrated in FIG. 2, the backlight unit (100) may include an optical sheet (140) that is provided to further improve the luminance and uniformity of the emitted light. The optical sheet (140) may be provided to refract and scatter light emitted from the front surface of the diffusion plate (130). For example, the optical sheet (140) may include various types of sheets, such as a diffusion sheet, a prism sheet, a reflective polarizing sheet, and a quantum dot sheet.

[0068] The diffuser plate (130) and the optical sheet (140) may be referred to as optical members (130, 140).

[0069] The display device (1) may include a control assembly (50) that controls the operation of the backlight unit (100) and the display panel (20), and a power assembly (60) that supplies power to the backlight unit (100) and the display panel (20). The control assembly (50) and the power assembly (60) may be provided in the main body (11).

[0070] For example, the control assembly (50) may include a control circuit that controls the operation of the display panel (20) and the backlight unit (100). The control circuit may process image data received from an external content source, transmit the image data to the display panel (20), and transmit dimming data to the backlight unit (100).

[0071] For example, the power assembly (60) can supply power to the display panel (20) and the backlight unit (100) so that the backlight unit (100) outputs surface light and the display panel (20) blocks or passes light from the backlight unit (100).

[0072] 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.

[0073] The display device (1) may include a display case that is provided to support various components of the main body (11) of the display device (1). In other words, various components of the main body (11) may be accommodated inside the display case. The display case may form the outer shape of the display device (1).

[0074] 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).

[0075] For example, the display device (1) may include a top chassis (13). The top chassis (13) may include a top chassis (13) that supports the front or side of the display panel (20). For example, the top chassis (13) may be provided in a shape of an approximately square frame.

[0076] The top chassis (13) may form a bezel that is positioned to face the front of the display device (1) and support the front of the display panel (20). However, if the display device (1) is a bezel-less type display device with a very narrow or no bezel, the top chassis (13) may be arranged to support only the side of the display panel (20). In some examples, if the bottom chassis (15) supports the side of the display panel (20), the display device (1) may not include the top chassis (13).

[0077] For example, the display device (1) may include a bottom chassis (15). The bottom chassis (15) may cover the rear of the display panel (20). The bottom chassis (15) may be coupled to the rear of the top chassis (13). The bottom chassis (15) may support various components of the display device (1), such as a backlight unit (100), a control assembly (50), and a power assembly (60).

[0078] 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.

[0079] For example, the display device (1) may include a middle mold (14). The middle mold (14) may be positioned between the top chassis (13) and the bottom chassis (15). For example, the middle mold (14) may support at least some components of the backlight unit (100).

[0080] For example, the display device (1) may include a rear cover (16). The rear cover (16) may be 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.).

[0081] In some examples, the display case of the display device (1) according to the invention may not include some of the components of the top chassis, the middle mold, the bottom chassis, and the rear cover.

[0082] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example for explaining a display device according to the concept of the present disclosure, and the concept of the present disclosure is not limited thereto. A display device according to the concept of the present disclosure may be provided to include various configurations for performing the function of providing images through a screen.

[0083] FIG. 3 is an enlarged view of a portion of a cross-section of a display panel of a display device according to one embodiment of the present disclosure.

[0084] 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).

[0085] 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).

[0086] 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).

[0087] 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.

[0088] 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).

[0089] 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) can transmit light having a magnetic field vibrating in a first direction and block other light. In addition, the second polarizing film (29) can transmit light having a magnetic field vibrating in a second direction and block other light. At this time, the first direction and the second direction can be orthogonal to each other. Accordingly, the polarization direction of the light transmitted by the first polarizing film (21) and the vibration direction of the light transmitted by the second polarizing film (29) can be orthogonal to each other. As a result, light generally cannot simultaneously transmit through the first polarizing film (21) and the second polarizing film (29).

[0090] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0091] 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 (27B) that passes blue light, and the red filter (27R), the green filter (27G), and the blue filter (27B) may be arranged in parallel with 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 (PR), the area where the green filter (27G) is formed may correspond to the green sub-pixel (PG), and the area where the blue filter (27B) is formed may correspond to the blue sub-pixel (PB).

[0092] 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).

[0093] The pixel electrode (23) and the common electrode (26) can be 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) described below.

[0094] The pixel electrode (23) and the common electrode (26) may be made of a transparent material and may allow externally incident light to pass through. 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 first transparent substrate (22).

[0095] 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).

[0096] 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.

[0097] 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).

[0098] 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).

[0099] In addition, liquid crystals can exhibit optical properties depending on changes in the electric field. For example, the direction of the arrangement of molecules constituting the liquid crystal can change depending on changes in the electric field. When an electric field is generated in the liquid crystal layer (25), the liquid crystal molecules (25a) of the liquid crystal layer (25) can be arranged according to the direction of the electric field. When an electric field is not generated in the liquid crystal layer (25), the liquid crystal molecules (25a) can be arranged irregularly or along the alignment layer. As a result, the optical properties of the liquid crystal layer (25) can vary depending on the presence or absence of an electric field passing through the liquid crystal layer (25).

[0100] The structure of the display panel (20) described above with reference to FIG. 3 is only an example of the structure that the display panel of the display device according to the concept of the present disclosure may have, and the concept of the present disclosure is not limited thereto.

[0101] FIG. 4 illustrates the interior of a display device according to one embodiment of the present disclosure. FIG. 5 illustrates an exploded view of a portion of a display device according to one embodiment of the present disclosure. FIG. 6 illustrates a front view of a portion of a display device according to one embodiment of the present disclosure. FIG. 7 is an enlarged view of portion A shown in FIG. 6. FIG. 8 illustrates a state in which the third light source substrate is separated from the connector in FIG. 7.

[0102] Referring to FIGS. 4 and 5, a display device (1) according to one embodiment of the present disclosure may include a reflective sheet (120) and a light source module (110) disposed on the reflective sheet (120). As an example, the light source module (110) may be positioned in front of the reflective sheet (120).

[0103] A display device (1) according to one embodiment of the present disclosure may be arranged such that a reflective sheet (120) is placed in front of a bottom chassis (15), and a light source module (110) is placed in front of the reflective sheet (120).

[0104] A light source module (110) of a display device (1) according to one embodiment of the present disclosure may include a light source substrate (111, 112, 113) disposed in front of a reflective sheet (120). The light source substrate (111, 112, 113) of the light source module (110) may be positioned in front of the reflective sheet (120).

[0105] For example, the light source module (110) may include a first light source substrate (111) and a second light source substrate (112) positioned below the first light source substrate (111). The second light source substrate (112) may be arranged parallel to the first light source substrate (111). The first light source substrate (111) and the second light source substrate (112) may be arranged in a vertical direction. The second light source substrate (112) may be arranged to be spaced apart from the first light source substrate (111).

[0106] For example, the light source module (110) may include a third light source substrate (113) connected to the first light source substrate (111). The third light source substrate (113) may be electrically connected to the first light source substrate (111). The first light source substrate (111) and the third light source substrate (113) may be arranged in the left-right direction.

[0107] A display device (1) according to one embodiment of the present disclosure is not limited to the first light source substrate (111), the second light source substrate (112), and the third light source substrate (113), and may further include additional light source substrates.

[0108] A light source module (110) of a display device (1) according to one embodiment of the present disclosure may include a plurality of first light sources (116) mounted on a first light source substrate (111). For example, the first light source substrate (111) may have a bar shape extending in the left-right direction, and the plurality of first light sources (116) may be arranged in the left-right direction on the first light source substrate (111). The plurality of first light sources (116) may be spaced apart from each other on the first light source substrate (111).

[0109] A light source module (110) of a display device (1) according to one embodiment of the present disclosure may include a plurality of second light sources (117) mounted on a second light source substrate (112). For example, the second light source substrate (112) may have a bar shape extending in the left-right direction, and the plurality of second light sources (117) may be arranged in the left-right direction on the second light source substrate (112). The plurality of second light sources (117) may be spaced apart from each other on the second light source substrate (112).

[0110] A light source module (110) of a display device (1) according to one embodiment of the present disclosure may include a plurality of third light sources (118) mounted on a third light source substrate (113). For example, the third light source substrate (113) may have a bar shape extending in the left-right direction, and the plurality of third light sources (118) may be arranged in the left-right direction on the third light source substrate (113). The plurality of third light sources (118) may be spaced apart from each other on the third light source substrate (113).

[0111] A display device (1) according to one embodiment of the present disclosure is not limited to a plurality of first light sources (116), a plurality of second light sources (117), and a plurality of third light sources (118), and may further include additional light sources.

[0112] A reflective sheet (120) of a display device (1) according to one embodiment of the present disclosure may be positioned at the rear of a light source module (110). The reflective sheet (120) may include a mounting portion (121) on which the light source module (110) is mounted, and a border portion (122) provided along the border of the mounting portion (121).

[0113] The edge portion (122) may be provided to be inclined with respect to the mounting portion (121). For example, the edge portion (122) may be inclined with respect to the mounting portion (121) so that the reflective sheet (120) can correspond to the shape of the bottom chassis (15). As the bottom chassis (15) is formed with a concave front surface to accommodate the light source module (110), the reflective sheet (120) may be formed concavely so as to correspond to the shape of the bottom chassis (15). Accordingly, the edge portion (122) may be inclined with respect to the mounting portion (121) so as to form a concave shape together with the mounting portion (121).

[0114] The edge portion (122) of the reflective sheet (120) may be provided to reduce brightness. Since the reflective sheet (120) has a concave shape, the brightness at the edge portion (122) may be higher than the brightness at the mounting portion (121). Therefore, the display device (1) according to one embodiment of the present disclosure may be provided with a configuration for reducing brightness at the edge portion (122) to uniformize brightness. For example, the display device (1) may be configured to reduce brightness by painting black ink on the edge portion (122).

[0115] A display device (1) according to one embodiment of the present disclosure may include a supporter (150) for maintaining a distance between a plurality of light sources (116, 117, 118) of a light source module (110) and optical members (130, 140). The supporter (150) may be disposed on a reflective sheet (120). The supporter (150) may be disposed between the reflective sheet (120) and the optical members (130, 140). The supporter (150) may support components disposed in front of the light source module (110). For example, the supporter (150) may support a diffusion plate (130) and / or an optical sheet (140). The supporter (150) may extend from the reflective sheet (120). For example, the supporter (150) may extend between the reflective sheet (120) and the diffuser plate (130).

[0116] The supporter (150) may be provided to maintain the optical distance (OD) between the plurality of light sources (116, 117, 118) of the light source module (110) and the optical members (130, 140), thereby maintaining the optical characteristics of the display device (1). For example, the supporter (150) may be provided with a length that can maintain the optical characteristics of the backlight unit (100).

[0117] Referring to FIGS. 6 to 8, a display device (1) according to one embodiment of the present disclosure may be arranged such that a first distance (y) between any one of a plurality of first light sources (116) mounted on a first light source substrate (111) and any one of a plurality of second light sources (117) mounted on a second light source substrate (112) is different from a second distance (x) between the plurality of first light sources (116) mounted on the first light source substrate (111). For example, the first distance (y) may include a closest distance among the distances between one first light source (116) among the plurality of first light sources (116) mounted on the first light source substrate (111) and one second light source (117) among the plurality of second light sources (117) mounted on the second light source substrate (112).

[0118] In one embodiment of the present disclosure, the display device (1) may have a first distance (y) that is at least twice the second distance (x) and at most four times the second distance (x). For example, when the first distance (y) is provided to be less than twice the second distance (x), the reflectivity of the reflective sheet (120) may be higher than the reflectivity of the light source substrates (111, 112, 113), so that the light source substrates (111, 112, 113) may be visible on the screen (12). For example, when the first distance (y) is provided to be greater than four times the second distance (x), the light required for driving the display device (1) may be insufficient.

[0119] In a display device (1) according to one embodiment of the present disclosure, since the first distance (y) is at least twice the second distance (x) and at most four times the second distance (x), more light can be provided to the light source substrate (111, 112, 113), and therefore, even though the reflectivity of the light source substrate (111, 112, 113) is lower than the reflectivity of the reflective sheet (120), the uniformity of the image displayed on the screen (12) can be improved.

[0120] A display device (1) according to one embodiment of the present disclosure may include a substrate connector (115) for connecting a first light source substrate (111) and a third light source substrate (113). For example, the first light source substrate (111) may be connected to one side of the substrate connector (115), and the third light source substrate (113) may be connected to an opposite side of one side of the substrate connector (115). As an example, the first light source substrate (111) may be electrically connected to a control assembly (50) and / or a power assembly (60) at a side opposite to one side connected to the substrate connector (115), and the third light source substrate (113) may be electrically connected to the control assembly (50) and / or the power assembly (60) by being connected to the first light source substrate (111) via the substrate connector (115).

[0121] Referring to FIGS. 5, 7, and 8, a light source module (110) of a display device (1) according to one embodiment of the present disclosure can be mounted on a bottom chassis (15). The light source substrates (111, 112, 113) of the light source module (110) can be detachably mounted on the bottom chassis (15).

[0122] The bottom chassis (15) may include a module mounting protrusion (15a) for mounting a light source module (110). The module mounting protrusion (15a) may protrude forward from the front of the bottom chassis (15).

[0123] A reflective sheet (120) of a display device (1) according to one embodiment of the present disclosure may be accommodated in a bottom chassis (15). The reflective sheet (120) may include a first opening (126) formed to allow a module mounting protrusion (15a) of the bottom chassis (15) to pass through. For example, the first opening (126) may have a hole shape. When the reflective sheet (120) is mounted on the bottom chassis (15), the module mounting protrusion (15a) may pass through the first opening (126) and protrude forward of the reflective sheet (120). The first opening (126) may be formed to allow the module mounting protrusion (15a) to pass through to be coupled with the light source substrate (111, 112, 113).

[0124] With the reflective sheet (120) mounted on the bottom chassis (15), the light source module (110) can be mounted on the bottom chassis (15). For example, in order to mount the first light source substrate (111) on the bottom chassis (15), the first light source substrate (111) can include a first substrate mounting portion (111a). The first substrate mounting portion (111a) can include a first passage portion (111aa) through which the module mounting protrusion (15a) can pass, and a first restriction portion (111ab) that can restrict the forward and backward movement of the module mounting protrusion (15a). As the module mounting protrusion (15a) passes through the first passage portion (111aa) and then moves to the first restriction portion (111ab), the first light source substrate (111) can be mounted on the bottom chassis (15). As the module mounting protrusion (15a) is inserted into the first passage (111aa) and then slides to the first restriction (111ab), the first light source substrate (111) can be mounted on the bottom chassis (15).

[0125] For example, in order to mount the second light source substrate (112) to the bottom chassis (15), the second light source substrate (112) may include a second substrate mounting portion (112a). The second substrate mounting portion (112a) may include a second passage portion (112aa) through which the module mounting protrusion (15a) can pass and a second restriction portion (112ab) that can restrict the forward and backward movement of the module mounting protrusion (15a). As the module mounting protrusion (15a) passes through the second passage portion (112aa) and then moves to the second restriction portion (112ab), the second light source substrate (112) may be mounted to the bottom chassis (15). As the module mounting protrusion (15a) is inserted into the second passage (112aa) and then slides to the second restriction (112ab), the second light source substrate (112) can be mounted on the bottom chassis (15).

[0126] For example, in order to mount the third light source substrate (113) to the bottom chassis (15), the third light source substrate (113) may include a third substrate mounting portion (113a). The third substrate mounting portion (113a) may include a third passage portion (113aa) through which the module mounting protrusion (15a) can pass, and a third restriction portion (113ab) that can restrict the forward and backward movement of the module mounting protrusion (15a). As the module mounting protrusion (15a) passes through the third passage portion (113aa) and then moves to the third restriction portion (113ab), the third light source substrate (113) may be mounted to the bottom chassis (15). As the module mounting protrusion (15a) is inserted into the third passage (113aa) and then slides to the third restriction (113ab), the third light source substrate (113) can be mounted on the bottom chassis (15).

[0127] Referring to FIGS. 7 and 8, for example, when the reflective sheet (120) is mounted on the bottom chassis (15), the third light source substrate (113) can be mounted on the bottom chassis (15). As illustrated in FIG. 8, the third light source substrate (113) is positioned so that the module mounting protrusion (15a) of the bottom chassis (15) passes through the third passage portion (113aa). In a state where the module mounting protrusion (15a) is positioned so that it passes through the third passage portion (113aa), the third light source substrate (113) can move so that the module mounting protrusion (15a) is positioned at the third restriction portion (113ab). For example, the third light source substrate (113) can move in a direction connected to the substrate connector (115) in a state where the module mounting protrusion (15a) is positioned so that it passes through the third passage portion (113aa).

[0128] Referring to FIG. 7, the third light source substrate (113) can be mounted on the bottom chassis (15) and connected to the substrate connector (115) as the module mounting protrusion (15a) is positioned on the third limiting portion (113ab).

[0129] Referring to FIG. 5, the bottom chassis (15) may include a supporter mounting portion (15b) so that a supporter (150) may be mounted to the bottom chassis (15). The supporter mounting portion (15b) may protrude forward from the front of the bottom chassis (15).

[0130] Referring to FIG. 5, the reflective sheet (120) may include a second opening (127) formed to allow the supporter mounting portion (15b) of the bottom chassis (15) to pass through. For example, the second opening (127) may have a hole shape. When the reflective sheet (120) is mounted on the bottom chassis (15), the supporter mounting portion (15b) may pass through the second opening (127) and protrude forward of the reflective sheet (120).

[0131] In a state where the reflective sheet (120) is mounted on the bottom chassis (15), the supporter (150) can be mounted on the bottom chassis (15). For example, in order to mount the supporter (150) on the bottom chassis (15), the supporter (150) can include a supporter connecting portion (151). The supporter connecting portion (151) can include a supporter passage portion (151a) through which the supporter mounting portion (15b) can pass, and a supporter limiting portion (151b) that can limit the forward and backward movement of the supporter mounting portion (15b). As the supporter mounting portion (15b) passes through the supporter passage portion (151a) and then moves to the supporter limiting portion (151b), the supporter (150) can be mounted on the bottom chassis (15).

[0132] According to one embodiment of the present disclosure, the display device (1) can mount the light source module (110) and the reflective sheet (120) on the bottom chassis (15) by mounting the reflective sheet (120) on the bottom chassis (15) and then mounting the light source module (110) on the bottom chassis (15), so that the light source module (110) and the reflective sheet (120) can be mounted on the bottom chassis (15), and thus, as compared to a structure in which the light source module (110) is placed at the rear of the reflective sheet (120), that is, a method in which the light source module (110) is mounted on the bottom chassis (15), and then the reflective sheet (120) is mounted on the bottom chassis (15), and then the reflective sheet (120) is fixed to the light source module (110), the assembling efficiency can be improved.

[0133] FIG. 9 schematically illustrates a light profile of one light source among a plurality of light sources of a light source module of a display device according to one embodiment of the present disclosure.

[0134] Hereinafter, for convenience of explanation, one first light source (116) among a plurality of first light sources (116) mounted on a first light source substrate (111) will be described, and the configuration of one first light source (116) can be equally applied to a plurality of first light sources (116), and can also be equally applied to a plurality of second light sources (117) and / or a plurality of third light sources (118).

[0135] Referring to FIG. 9, the first light source substrate (111) may be placed in front of the reflective sheet (120), and the first light source (116) mounted on the first light source substrate (111) may include a light emitting diode (116a) and a light source lens (116b) that covers the light emitting diode (116a) to protect the light emitting diode (116a).

[0136] The first light source (116) placed on the first light source substrate (111) may have a width of an area having half the brightness compared to the brightest part (front of the light-emitting diode (116a)) in the light profile (F) set to a maximum half-width (W).

[0137] A display device (1) according to one embodiment of the present disclosure may be provided such that the maximum half-width (W) of the first light source (116) is greater than the first distance (y). For example, the maximum half-width (W) of the first light source (116) may be provided to be equal to or greater than the first distance (y) between any one of a plurality of first light sources (116) mounted on a first light source substrate (111) and any one of a plurality of second light sources (117) mounted on a second light source substrate (112), and equal to or less than 1.15 times the first distance (y).

[0138] A display device (1) according to one embodiment of the present disclosure can provide more light to the light source substrates (111, 112, 113) by designing the maximum half-width (W) of each of the plurality of light sources (116, 117, 118) mounted on the light source substrates (111, 112, 113) to be equal to or greater than a first distance (y) between any one of the plurality of first light sources (116) mounted on the first light source substrate (111) and any one of the plurality of second light sources (117) mounted on the second light source substrate (112) and equal to or less than 1.15 times the first distance (y), thereby improving brightness.

[0139] Figure 10 is an enlarged view of part B shown in Figure 6.

[0140] Hereinafter, for convenience of explanation, the first light source substrate (111) and some of the plurality of first light sources (116) will be described, and the configuration of the first light source substrate (111) and some of the plurality of first light sources (116) can also be applied to the second light source substrate (112) and the plurality of second light sources (117), and can also be applied to the third light source substrate (113) and the plurality of third light sources (118).

[0141] Referring to FIG. 10, a display device (1) according to one embodiment of the present disclosure may further include a reflector (160) to improve the reflectivity of a first light source substrate (111) of a light source module (110). As an example, the reflector (160) may include white ink. For example, the reflector (160) may include PSR (Photo Solder Resist). By the reflector (160), the difference in reflectivity between the first light source substrate (111) and the reflective sheet (120) may be improved.

[0142] According to one embodiment of the present disclosure, the reflector (160) of the display device (1) may be provided in different quantities according to a predetermined area on the first light source substrate (111). For example, a relatively small amount of the reflector (160) may be applied to an adjacent first area (161) of each of the plurality of first light sources (116), and a relatively large amount of the reflector (160) may be applied to a second area (162) spaced apart from the plurality of first light sources (116). The second area (162) may be provided between the plurality of first light sources (116).

[0143] For example, the reflector (160) may be applied to the first light source substrate (111). For example, since the second region (162) is spaced apart from the plurality of first light sources (116), it may be relatively light-deficient compared to the first region (161). Therefore, the light reflectivity of the second region (162) may be improved more than the light reflectivity of the first region (161), thereby improving the uniformity of the overall brightness of the display device (1).

[0144] A display device according to one embodiment includes a reflective sheet, a first light source substrate, and a second light source substrate, and includes a light source substrate on the reflective sheet, and a plurality of light sources including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate. A first distance between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources is at least twice a second distance and at most four times the second distance. The second distance is a distance between adjacent first light sources among the plurality of first light sources.

[0145] The first distance is the smallest distance among the distances between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources.

[0146] The first light source substrate and the second light source substrate can be spaced apart in the vertical direction.

[0147] The display device may further include a bottom chassis for accommodating the reflective sheet. The light source substrate may be arranged to be mounted on the bottom chassis while the reflective sheet is mounted on the bottom chassis.

[0148] The above bottom chassis may include a module mounting protrusion. The light source substrate may include a passage portion configured to allow the module mounting protrusion to be inserted, and a limiting portion configured to limit the module mounting protrusion from being dislodged while the module mounting protrusion is inserted therein.

[0149] With the module mounting protrusion inserted into the passage portion, the light source substrate can be arranged to be mounted on the bottom chassis as the module mounting protrusion is inserted into the restriction portion.

[0150] The reflective sheet may include an opening into which the module mounting protrusion is inserted to be coupled with the light source substrate.

[0151] The display device may further include a display panel, an optical member between the display panel and the reflective sheet, and a supporter configured to support the optical member and on the reflective sheet.

[0152] The reflectivity of the light source substrate may be less than the reflectivity of the reflective sheet.

[0153] The width of the peripheral area of ​​one of the plurality of light sources may be based on the distance from the brightest part of the light source to a point that is half the brightness of the brightest part. The width may be greater than or equal to the first distance and less than or equal to 1.15 times the first distance.

[0154] The display device may further include a reflector on the light source substrate, with a larger quantity provided in a second region spaced apart from the plurality of light sources than in a first region adjacent to the plurality of light sources.

[0155] The above reflector may include a PSR (Photo Solder Resist) on the light source substrate.

[0156] At least a portion of the edge of the reflective sheet may have a reduced reflectivity compared to another portion of the reflective sheet.

[0157] The distance between the plurality of second light sources may be the same as the distance between the plurality of first light sources.

[0158] The display device may further include a third light source substrate arranged in a left-right direction with the first light source substrate, and a substrate connector for electrically connecting the first light source substrate and the third light source substrate.

[0159] A display device according to one embodiment includes a bottom chassis, a reflective sheet disposed in front of the bottom chassis, a first light source substrate disposed in front of the reflective sheet, a second light source substrate disposed in front of the reflective sheet and arranged vertically with respect to the first light source substrate, a plurality of first light sources mounted on the first light source substrate, and a plurality of second light sources mounted on the second light source substrate. A closest first distance among distances between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources is arranged to be at least twice a second distance between the plurality of first light sources and at most four times the second distance.

[0160] The first light source substrate and the second light source substrate can be detachably mounted to the bottom chassis when the reflective sheet is mounted to the bottom chassis.

[0161] At least one of the plurality of first light sources or the plurality of second light sources may be arranged such that the width of an area having a brightness that is half that of the brightest part is greater than or equal to the first distance and less than or equal to 1.15 times the first distance.

[0162] The display device may further include a reflector applied on at least one of the first light source substrate or the second light source substrate, the reflector being applied in a larger amount in a second region spaced apart from the plurality of first light sources or the plurality of second light sources than in a first region adjacent to the plurality of first light sources or the plurality of second light sources.

[0163] The reflectivity of at least one of the first light source substrate or the second light source substrate may be set to be lower than the reflectivity of the reflective sheet.

[0164] According to one embodiment of the present disclosure, the display device can have improved assembly performance since the light source module is positioned in front of the reflective sheet.

[0165] According to one embodiment of the present disclosure, a display device can improve brightness because a distance between a plurality of light sources is provided so that more light can be provided to the light source substrate than to the reflective sheet.

[0166] According to one embodiment of the present disclosure, the display device can reduce material costs by using fewer light source substrates than when the distance between a plurality of light sources mounted on one substrate is the same as the distance between each light source mounted on different substrates.

[0167] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0168] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Reflective sheet; A light source substrate comprising a first light source substrate and a second light source substrate, and a light source substrate on the reflective sheet; and A plurality of light sources including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate; A first distance between one of the plurality of first light sources and one of the plurality of second light sources is at least twice the second distance and at most four times the second distance, A display device in which the second distance is a distance between adjacent first light sources among the plurality of first light sources.

2. In paragraph 1, A display device in which the first distance is the smallest distance among the distances between one first light source among the plurality of first light sources and one second light source among the plurality of second light sources.

3. In paragraph 1, A display device in which the first light source substrate and the second light source substrate are spaced apart in the vertical direction.

4. In paragraph 1, Further comprising a bottom chassis for accommodating the above reflective sheet; A display device in which the light source substrate is mounted on the bottom chassis while the reflective sheet is mounted on the bottom chassis.

5. In paragraph 4, The above bottom chassis includes a module mounting protrusion, The above light source substrate is, a passage configured to allow the above module mounting protrusion to be inserted; and A display device including a limiting member configured to limit the detachment of the module mounting protrusion while the module mounting protrusion is inserted therein.

6. In paragraph 5, A display device in which the light source substrate is mounted on the bottom chassis as the module mounting protrusion is inserted into the passage portion and the module mounting protrusion is inserted into the restriction portion.

7. In paragraph 5, A display device wherein the reflective sheet includes an opening into which the module mounting protrusion is inserted so as to be coupled with the light source substrate.

8. In paragraph 1, display panel; an optical member between the display panel and the reflective sheet; and A display device configured to support the optical member and further including a supporter on the reflective sheet.

9. In paragraph 1, A display device in which the reflectivity of the light source substrate is lower than the reflectivity of the reflective sheet.

10. In paragraph 1, The width of the peripheral area of ​​one of the plurality of light sources is based on the distance from the brightest part of the light source to the point at half the brightness of the brightest part, A display device having a width greater than or equal to the first distance and less than or equal to 1.15 times the first distance.

11. In paragraph 1, A display device further comprising a reflector on the light source substrate, wherein a larger quantity is provided in a second region spaced apart from the plurality of light sources than in a first region adjacent to the plurality of light sources.

12. In paragraph 11, The above reflector is a display device including PSR (Photo Solder Resist) on the light source substrate.

13. In paragraph 1, A display device wherein at least a portion of the edge of the reflective sheet has a reduced reflectivity compared to another portion of the reflective sheet.

14. In paragraph 1, A display device wherein the distance between the plurality of second light sources is the same as the distance between the plurality of first light sources.

15. In paragraph 1, A third light source substrate arranged in the left-right direction with respect to the first light source substrate; and A display device further comprising a substrate connector for electrically connecting the first light source substrate and the third light source substrate.

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