Display device

Abstract

This display device comprises: a display panel; a light guide plate disposed at the rear of the display panel; a light source board; a plurality of light sources disposed on the light source board so as to be adjacent to one peripheral surface of the light guide plate, and configured to emit light toward the one peripheral surface of the light guide plate; a plurality of ribs disposed between the light guide plate and the light source board, and disposed between light sources among the plurality of light sources; and a control board connected to the light source board and configured to supply a driving current to the plurality of light sources, wherein the plurality of light sources include a first number of first light sources and a second number of second light sources.

Description

Display device

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

[0002] A display device is a type of output device capable of converting acquired or stored electrical information into visual information and displaying it to a user. Display devices are used in various fields, such as homes and workplaces.

[0003] The display device may include a monitor device connected to a personal computer or server computer, a portable computer device, a navigation terminal device, a general television device, an Internet Protocol Television (IPTV) device, a portable terminal device such as a smartphone, a tablet PC, a Personal Digital Assistant (PDA), or a cellular phone, various display devices used to play images such as advertisements or movies in industrial settings, or various other types of audio / video systems.

[0004] The display device may include a self-emissive display panel or a receiver-emissive display panel.

[0005] A display device having a receiving and emitting display panel may include a liquid crystal panel and a backlight unit that supplies light to the liquid crystal panel.

[0006] A backlight unit includes a light source module composed of a light source and a circuit board, and various optical components, and can be classified into direct type and edge type depending on the position of the light source. An edge-type backlight unit may be equipped with a light guide plate (LGP) to guide light emitted from the light source to the liquid crystal panel.

[0007] A display device is provided that may have an improved structure to reduce and / or prevent dark areas from being visible on the screen even if an area where the amount of light is limited by the structure of the backlight unit occurs.

[0008] In addition, a display device is provided that can improve the uniformity of brightness on the screen.

[0009] Additional aspects will be partially explained in the following description, partially become apparent from the description, or can be learned by practicing the presented embodiments.

[0010] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a light source board, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate on the light source board and configured to emit light toward the one periphery surface of the light guide plate, a plurality of ribs disposed between the light guide plate and the light source board and disposed between the light sources among the plurality of light sources, and a control board connected to the light source board and configured to supply a driving current to the plurality of light sources. The plurality of light sources may include a first number of first light sources and a second number of second light sources greater than the first number. The first light sources may be disposed between a first rib among the plurality of ribs and a second rib adjacent to the first rib. The second light sources may be disposed between a second rib among the plurality of ribs and a third rib adjacent to the second rib. The control board may be configured to supply a first current of a first size to at least some of the first light sources and to supply a second current of a second size smaller than the first size to at least some of the second light sources.

[0011] The control board above may be further configured to supply the first current to the light source closest to the second rib among the first light sources.

[0012] The control board above may be further configured to supply the second current to the light source closest to the second rib among the second light sources.

[0013] The display device may further include a plurality of dimming blocks, each comprising a predetermined number of light sources among the plurality of light sources. The total light source included in one or more of the plurality of dimming blocks may be the first light source. The control board may be further configured to supply the first current to each of the light sources included in the one or more of the dimming blocks.

[0014] The display device may further include a plurality of dimming blocks, each comprising a predetermined number of light sources among the plurality of light sources. Among the plurality of dimming blocks, the first dimming block may include the light source closest to the second rib among the first light sources. The control board may be further configured to supply the first current to each of the light sources included in the first dimming block.

[0015] The first dimming block may further include one or more light sources adjacent to the second rib among the second light sources.

[0016] The display device may further include a plurality of dimming blocks, each comprising a predetermined number of light sources among the plurality of light sources. The total light source included in one or more of the plurality of dimming blocks may be the second light source. The control board may be further configured to supply the second current to each of the light sources included in the one or more of the dimming blocks.

[0017] The display device may further include a plurality of dimming blocks, each comprising a predetermined number of light sources among the plurality of light sources. Among the plurality of dimming blocks, a first dimming block may include a light source closest to the second rib among the second light sources. The control board is further configured to supply the second current to each of the light sources included in the first dimming block.

[0018] The first dimming block may further include one or more light sources adjacent to the second rib among the first light sources.

[0019] The first light sources are arranged spaced apart from each other by a first interval, and the second light sources are arranged spaced apart from each other by the first interval, and one light source among the first light sources closest to the second rib and one light source among the second light sources closest to the second rib may be spaced apart from each other by a second interval larger than the first interval.

[0020] The plurality of light sources may further include a third number of third light sources that is larger than the first number and smaller than the second number. The third light sources may be positioned between the third rib and a fourth rib adjacent to the third rib. The control board may be further configured to supply the second current to at least some of the third light sources.

[0021] The plurality of light sources may further include a third number of third light sources greater than the second number. The third light sources may be positioned between the third rib and a fourth rib adjacent to the third rib. The control board may be further configured to supply a third current of a third size smaller than the second size to at least some of the third light sources.

[0022] The first current may be the maximum current supplied to at least some of the first light sources. The second current may be the maximum current supplied to at least some of the second light sources.

[0023] The second rib may be positioned between the first rib and the third rib. The first rib, the second rib, and the third rib may be arranged sequentially along one direction in which the plurality of light sources are arranged.

[0024] The display panel may include a first region corresponding to the first light sources and a second region corresponding to the second light sources. The difference between the first magnitude of the first current and the second magnitude of the second current may be based on the difference between the brightness of the light emitted from the first region and the brightness of the light emitted from the second region.

[0025] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a light source board, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate on the light source board and configured to emit light toward the one periphery surface of the light guide plate, a plurality of ribs disposed between the light guide plate and the light source board and disposed between the light sources among the plurality of light sources, a plurality of dimming blocks each comprising light sources of the plurality of light sources, and a control board connected to the light source board and configured to supply driving current to the plurality of light sources. The plurality of light sources may include a first number of first light sources and a second number of second light sources greater than the first number. The plurality of dimming blocks may include a first dimming block comprising at least a portion of the first light sources and a second dimming block comprising at least a portion of the second light sources. The first light sources may be disposed between a first rib and a second rib adjacent to the first rib among the plurality of ribs. The second light sources may be positioned between the second rib and the third rib adjacent to the second rib among the plurality of ribs. The control board may be configured to supply a first current of a first size to the first dimming block and to supply a second current of a second size smaller than the first size to the second dimming block.

[0026] The entire light source included in the first dimming block among the plurality of dimming blocks above may be the first light source.

[0027] The first dimming block may further include one or more light sources adjacent to the second rib among the second light sources.

[0028] The entire light source included in the second dimming block among the plurality of dimming blocks above may be the second light source.

[0029] The second dimming block may further include one or more light sources adjacent to the first rib among the first light sources.

[0030] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate and configured to emit light toward the one periphery surface of the light guide plate, and a control board configured to supply a driving current to the plurality of light sources. The plurality of light sources may include a first light source group comprising a first number of first light sources arranged at a first interval from each other, and a second light source group comprising a second number of second light sources arranged at the first interval from each other and greater than the first number, and spaced apart from the first light source group at a second interval greater than the first interval. The control board may be configured to supply a current of a first size to at least some of the first light sources included in the first light source group, and to supply a current of a second size smaller than the first size to at least some of the second light sources included in the second light source group.

[0031] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate and configured to emit light toward the one periphery surface of the light guide plate, a first light source board on which a first number of light sources among the plurality of light sources is mounted, a second light source board adjacent to the first light source board and on which a second number of light sources among the plurality of light sources, which is greater than the first number, is mounted, and a control board connected to the first light source board and the second light source board and configured to supply driving current to the plurality of light sources. The control board may be configured to supply a current of a first magnitude to at least some of the light sources mounted on the first light source board and to supply a current of a second magnitude to at least some of the light sources mounted on the second light source board.

[0032] The above and other aspects, features, and advantages of specific embodiments of the present disclosure will become more apparent from the following description together with the accompanying drawings.

[0033] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0034] FIG. 2 is an exploded perspective view of a display device according to one embodiment of the present disclosure.

[0035] FIG. 3 is a cross-sectional view illustrating some components of a display device according to one embodiment of the present disclosure.

[0036] FIG. 4 is a cross-sectional view illustrating some components of a display device according to one embodiment of the present disclosure.

[0037] FIG. 5 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0038] FIG. 6 is an enlarged view of a portion of each of the light source module, the corresponding screen, and the rib of a display device according to one embodiment of the present disclosure.

[0039] FIG. 7 is a drawing illustrating some light source groups and dimming blocks included in a light source module of a display device according to one embodiment of the present disclosure.

[0040] FIG. 8 is a drawing illustrating some light source groups and dimming blocks included in a light source module of a display device according to one embodiment of the present disclosure.

[0041] FIG. 9 is a drawing illustrating some light source groups and dimming blocks included in a light source module of a display device according to one embodiment of the present disclosure.

[0042] FIG. 10 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure.

[0043] FIG. 11 is an enlarged view of a portion of each of the light source module and the corresponding screen of a display device according to one embodiment of the present disclosure.

[0044] FIG. 12 is a diagram showing the maximum current supplied to regions on the screen of a display device and corresponding light sources according to one embodiment of the present disclosure.

[0045] FIG. 13 is a diagram showing the maximum current supplied to regions on the screen of a display device and corresponding light sources according to one embodiment of the present disclosure.

[0046] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and various variations of the embodiments and drawings described in this specification may exist.

[0047] Additionally, the same reference numerals or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0048] Furthermore, the terms used herein are for describing embodiments and are not intended to limit or / or restrict the disclosed invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, the terms “comprising” or “having” and their variations are intended to indicate the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0049] Where a component is referred to as being "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, or supported through a third component.

[0050] In addition, when one component is referred to as being "above" or "on" another component, it will be understood that this may mean it is directly above the other component, or that a component may exist in between.

[0051] Additionally, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but said components are not limited by said terms, and said terms are used solely 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 named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any one of a plurality of related described items.

[0052] The expressions “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” used in this specification may each include a corresponding expression between the expressions with one or all possible combinations of the listed items.

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

[0054] In describing various embodiments of the present disclosure with reference to FIGS. 1 to 13, terms used in the following description, such as "front-back direction," "vertical direction (up-down direction)," and "horizontal direction (left-right direction)," are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the term "front-back direction" below may mean a direction parallel to the X direction based on the drawings, "front" may mean the direction in which an image is provided through the screen, and "rear" may mean a direction opposite to "front." For example, "vertical direction (up-down direction)" may mean a direction parallel to the Z direction based on the drawings, and "upward" and "downward" may mean the upward direction in the Z direction and the downward direction in the Z direction, respectively, based on the drawings. For example, the term "horizontal direction (left-right direction)" below may each mean a direction parallel to the Y direction based on the drawings.

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

[0056] Referring to FIG. 1, a display device (1) according to various embodiments of the present disclosure is a device capable of processing an image signal received from the outside and visually displaying the processed image.

[0057] For example, a display device (1) according to various embodiments of the present disclosure may include various types of display devices, such as a television (TV), a monitor which is a type of computer output device, a portable multimedia device, or a portable communication device. For example, the display device (1) may include a large format display (LFD) installed outdoors, such as on a building rooftop or at a bus stop. Here, the outdoor area is not necessarily limited to an open space, but may include various indoor locations where many people can enter and exit, such as subway stations, shopping malls, movie theaters, companies, and shops. The type of the display device (1) according to various embodiments of the present disclosure is not limited to that described above, as long as it is a device that visually displays images.

[0058] In FIG. 1, the display device (1) is described as a flat display device with a flat screen, but is not limited thereto. The display device (1) according to various embodiments of the present disclosure may include a curved display device or a variable (bendable or flexible) display device capable of varying between a flat state and a curved state. The configuration of the present disclosure described below can be applied to display devices of various shapes regardless of the screen size or aspect ratio of the display device.

[0059] According to various embodiments, the display device (1) may be installed in a standing manner on an indoor or outdoor floor or on furniture. For example, the display device (1) may be installed in a standing manner on an indoor or outdoor floor or on furniture by including a support leg (2) that supports the lower part of the case of the display device (1). According to various embodiments, the display device (1) may be installed on a wall or inside a wall of a building or other structure. For example, the display device (1) may be installed on a wall by a wall mount device.

[0060] The display device (1) receives content including video signals and audio signals from various content sources and can output video and audio corresponding to the video signals and audio signals. For example, the display device (1) can receive content data through a broadcast receiving 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.

[0061] The display device (1) can display an image corresponding to video data and output sound corresponding to audio data. For example, the display device (1) can restore multiple image frames included in the video data and continuously display multiple image frames. In addition, the display device (1) can restore an audio signal included in the audio data and continuously output sound according to the audio signal.

[0062] The display device (1) may include a display panel (10). The display panel (10) may be configured to output and display images. The display panel (10) may form a screen on its front surface and may display images through the screen. For example, the display panel (10) may display still images or video images through the screen. For example, the display panel (10) may display two-dimensional flat images or three-dimensional stereoscopic images of the user through the screen.

[0063] A plurality of pixels may be provided on the screen of the display panel (10). An image displayed on the screen may be formed by light emitted by each of the plurality of pixels. For example, an image may be provided on the screen by combining the light emitted by the plurality of pixels as if in a mosaic.

[0064] Each of the plurality of pixels may emit light of various brightness and various colors. In detail, each of the plurality of pixels may include sub-pixels, and the sub-pixels may include a red sub-pixel capable of emitting red light, a green sub-pixel capable of emitting green light, and a blue sub-pixel capable of emitting blue light. For example, red light may represent light with a wavelength of approximately 620 nm (nanometer, one-billionth of a meter) to 750 nm, green light may represent light with a wavelength of approximately 495 nm to 570 nm, and blue light may represent light with a wavelength of approximately 450 nm to 495 nm.

[0065] Each of the multiple pixels can emit light of various brightness and various colors through a combination of light emitted from the red subpixel, green subpixel, and blue subpixel, respectively.

[0066] FIG. 2 is an exploded perspective view of a display device according to one embodiment of the present disclosure. FIG. 3 is a cross-sectional view illustrating some components of a display device according to one embodiment of the present disclosure.

[0067] Referring to FIGS. 2 and FIGS. 3, a display device (1) according to one embodiment of the present disclosure may include various components for outputting an image through a display panel (10).

[0068] In a display device (1) according to one embodiment of the present disclosure, the display panel (10) may be composed of a panel of a light-emitting display type, such as a liquid crystal display (LCD).

[0069] A liquid crystal display panel type display panel (10) can display an image using liquid crystal that exhibits optical properties according to changes in voltage and temperature. The display panel (10) may be composed of a thin film transistor substrate (TFT), a color filter substrate coupled to face each other with the thin film transistor substrate, and liquid crystal injected between the thin film transistor substrate and the color filter substrate.

[0070] For example, the screen of the display panel (10) may have a roughly rectangular shape. For example, the screen of the display panel (10) may include a pair of long sides extending in the horizontal direction (Y) and a pair of short sides extending in the vertical direction (Z). However, it is not limited thereto, and the screen of the display panel (10) may have various shapes, such as a rectangular shape or a square shape, including a pair of long sides extending in the vertical direction (Z) and a pair of short sides extending in the horizontal direction (Y).

[0071] On one side (e.g., the lower side) of the display panel (10), a cable for transmitting video data to the display panel (10) and a display driver integrated circuit (DDI) (hereinafter referred to as 'driver IC') for processing digital video data and outputting an analog video signal may be provided.

[0072] The cable can electrically connect the circuit board assembly (50, 60) and the driver IC, and can also electrically connect the driver IC and the display panel (10). The cable may include a flexible flat cable or a film cable that can be bent.

[0073] The driver IC can receive image data and / or power from the circuit board assembly (50, 60) through a cable and transmit image data and / or driving current to the display panel (10) through the cable.

[0074] For example, the cable and driver IC can be implemented as a single unit in a film cable, chip-on-film (COF), tape carrier packet (TCP), etc. For example, the driver IC can be placed on the cable.

[0075] The display device (1) may include a backlight unit configured to irradiate light toward a display panel (10). The backlight unit may be positioned behind the display panel (10) and configured to irradiate light toward the front where the display panel (10) is located. According to one embodiment, the backlight unit may be composed of a surface light source. The display panel (10) may block or allow light emitted from the backlight unit to pass through based on image data.

[0076] The backlight unit may include a point light source emitting monochromatic light or white light, and may be configured to refract, reflect, and scatter light to convert the light emitted from the point light source into uniform surface light. By refracting, reflecting, and scattering the light emitted from the point light source, the backlight unit can emit uniform surface light toward the front.

[0077] The backlight unit may include a light source module (100). The light source module (100) may include a plurality of light sources (110) and a light source board (120) configured to emit light.

[0078] Each of the plurality of light sources (110) may be configured to emit monochromatic light or white light. Each of the plurality of light sources (110) may be configured to be a point light source and to emit light in various directions. For example, the light source (110) may include an LED (Light Emitting Diode).

[0079] A plurality of light sources (110) may be mounted on the light source board (120). A plurality of light sources (110) may be arranged on the light source board (120). A plurality of light sources (110) may be mounted on one side of the light source board (120) facing the light guide plate (20) described later. The light source board (120) may include circuit patterns, etc., for transmitting driving current and signals to the light sources (110). For example, the light source board (120) may include a printed circuit board on which a conductive circuit pattern is printed on one side of the light source board (120) facing the light guide plate (20) described later.

[0080] According to one embodiment, the light source board (120) may be extended in one direction. According to one embodiment, the one direction may be linear or non-linear. The light source board (120) may be extended along one side edge of the light guide plate (20) described later (e.g., the lower edge of the light guide plate (20)). A plurality of light sources (110) may be arranged in a line along the extension direction of the light source board (120) on the light source board (120). A plurality of light sources (110) may be arranged spaced apart from each other along the extension direction of the light source board (120) on the light source board (120).

[0081] According to one embodiment, the display device (1) may include a light guide plate (20). The light guide plate (20) may be configured to guide light emitted from a plurality of light sources (110) to a display panel (10). The light guide plate (20) may be configured to convert light emitted from a plurality of light sources (110) into surface light and guide it to the display panel (10). Various patterns may be formed on the light guide plate (20) to change the path of the light.

[0082] A light guide plate (20) can be positioned at the rear of a display panel (10). The light guide plate (20) can guide light emitted from a plurality of light sources (110) forward.

[0083] For example, the light guide plate (20) may include PMMA (Poly Methyl Methacrylate Acrylate) material.

[0084] According to one embodiment, the light guide plate (20) may be formed in a roughly rectangular shape. The light guide plate (20) may have a front surface (21), a rear surface (22), and perimeter surfaces (23, 24, 25, 26). The perimeter surfaces (23, 24, 25, 26) may include an upper perimeter surface (23), a lower perimeter surface (24), a left perimeter surface (26), and a right perimeter surface (25). The upper perimeter surface (23) and the lower perimeter surface (24) may each extend in a horizontal direction (Y) and may face each other in a vertical direction (Z). The left perimeter surface (26) and the right perimeter surface (25) may each extend in a vertical direction (Z) and may face each other in a horizontal direction (Y). Each of the perimeter faces (23, 24, 25, 26) may have a thickness in the front-back direction (X).

[0085] A plurality of light sources (110) may be arranged adjacent to at least one of the periphery surfaces (23, 24, 25, 26) of the light guide plate (20). The plurality of light sources (110) may emit light toward at least one of the periphery surfaces (23, 24, 25, 26) of the light guide plate (20). The light emitted from the plurality of light sources (110) may be incident on the light guide plate (20) through at least one of the periphery surfaces (23, 24, 25, 26) of the light guide plate (20), and may be emitted from the light guide plate (20) through the front surface (21) of the light guide plate (20). The light emitted through the front surface (21) of the light guide plate (20) may be guided to the display panel (10). Among the circumferential surfaces (23, 24, 25, 26) of the light guide plate (20), the surface where light is incident can be referred to as the incident surface of the light guide plate (20), and the front surface (21) of the light guide plate (20) can be referred to as the exit surface of the light guide plate (20).

[0086] For example, a plurality of light sources (110) can emit light toward the lower circumferential surface (24) among the circumferential surfaces (23, 24, 25, 26) of the light guide plate (20). To this end, a plurality of light sources (110) can be arranged adjacent to the lower circumferential surface (24) of the light guide plate (20). A light source board (120) can be extended in a horizontal direction (Y) so as to be parallel to the lower circumferential surface (24) of the light guide plate (20). A plurality of light sources (110) can be arranged along the horizontal direction (Y) so as to be parallel to the lower circumferential surface (24).

[0087] However, the arrangement of the plurality of light sources (110) and light source boards (120) is not limited thereto, and in various embodiments, the plurality of light sources (110) may be arranged adjacent to at least one of the periphery surfaces (23, 24, 25, 26) of the light guide plate (20) and configured to emit light toward the periphery surface, and the light source board (120) may be extended parallel to the periphery surface and the plurality of light sources (110) may be arranged along the direction of extension.

[0088] Multiple light sources (110) and light guide plates (20) may be spaced apart from each other. If the distance between the light sources (110) and the light guide plates (20) changes, the brightness provided through the display panel (10) may change. Therefore, it is desirable that the distance between the light sources (110) and the light guide plates (20) be kept constant so that the brightness provided through the display panel (10) can be maintained constant.

[0089] According to one embodiment, the display device (1) may include a rib (40) provided to maintain a separation distance between a light guide plate (20) and a plurality of light sources (110). The rib (40) may be provided to maintain a separation distance between a circumferential surface (23, 24, 25, 26) of the light guide plate (20) that faces the plurality of light sources (110) (e.g., a lower circumferential surface (24)) and the plurality of light sources (110). The rib (40) may also be referred to as a 'spacer'.

[0090] A rib (40) may be placed between a light guide plate (20) and a light source board (120). A rib (40) may be placed between a perimeter surface (23, 24, 25, 26) of the light guide plate (20) that faces a plurality of light sources (110) (e.g., a lower perimeter surface (24)) and the light source board (120). A rib (40) may be placed between some of the light sources (110) among the plurality of light sources (110). A plurality of ribs (40) may be provided, and a plurality of ribs (40) may be placed between the light guide plate (20) and the light source board (120) and between some of the light sources (110) among the plurality of light sources (110). The number of ribs (40) may be less than the number of light sources (110), and thus the plurality of ribs (40) may not be placed between each of the plurality of light sources (110), but only between some of the plurality of light sources (110). The plurality of ribs (40) may be spaced apart and arranged along the extension direction of the light source board (120).

[0091] The rib (40) can be positioned at various locations to maintain a separation distance between the light guide plate (20) and the plurality of light sources (110). According to one embodiment, as shown in FIG. 3, the rib (40) may include a rib (40A) supported by a case (e.g., a middle mold (85)) to be described later. For example, the rib (40A) may extend from the middle mold (85) toward the space between the plurality of light sources (110) and the light guide plate (20). For example, the rib (40A) may be coupled to and supported by an intermediate support (87) of the middle mold (85) to be described later. According to one embodiment, for example, the rib (40A) may be formed integrally with the intermediate support (87) of the middle mold (85), but the present disclosure is not limited thereto. For example, according to one embodiment, as shown in FIG. 4, the rib (40) may include a rib (40B). The rib (40B) may be coupled to one side of the light source board (120) facing the light guide plate (20).

[0092] As illustrated in FIGS. 2 and 3, the backlight unit may include a reflective sheet (16) arranged to reflect light. The reflective sheet (16) may reflect light forward or in a direction close to the forward. For example, the reflective sheet (16) may be placed on the rear side of the light guide plate (20) to direct light emitted backward from the light source (110) to the light guide plate (20), or to direct light emitted backward from the light guide plate (20) back to the light guide plate (20).

[0093] As illustrated in FIGS. 2 and 3, the backlight unit may include various optical sheets (15) to improve the characteristics of the emitted light.

[0094] For example, the optical sheet (15) may be provided to further improve the brightness or uniformity of brightness of light by refracting and / or scattering light. For example, the optical sheet (15) may include various types of optical sheets, such as a diffusion sheet and a prism sheet. The diffusion sheet can scatter light to offset the influence of the pattern of the light guide plate (20). The prism sheet can improve brightness by concentrating the light scattered by the diffusion sheet.

[0095] For example, the optical sheet (15) may include a quantum dot sheet to improve color reproduction by changing the wavelength of light. Quantum dots, which are semiconductor crystals of several nanometers in size that emit light, may be dispersed within the quantum dot sheet. Quantum dots can receive blue light and, depending on their size, emit light of various wavelengths, that is, all colors of visible light.

[0096] According to one embodiment, a plurality of light sources (110) may include a light-emitting element configured to emit blue light and a light-transmitting cover covering the light-emitting element. For example, the light-transmitting cover may include transparent silicon and may transmit blue light emitted from the light-emitting element without changing its wavelength. For example, a separate light-converting phosphor may not be provided in the light-transmitting cover. Thus, a single color blue light may be emitted from the plurality of light sources (110). An optical sheet (15) may include a quantum dot sheet to convert blue light emitted from the light source (110) into white light and provide white light to a display panel (10).

[0097] However, it is not limited thereto, and according to one embodiment, a phosphor (e.g., yellow phosphor) provided to convert the wavelength of light may be provided in the light-transmitting cover of a plurality of light sources (110), and the phosphor may convert blue light emitted from a light-emitting element into white light. In such an embodiment, even if the optical sheet (15) does not include a quantum dot sheet, white light may be provided to the display panel (10) as white light is emitted from each of the plurality of light sources (110).

[0098] According to one embodiment, the display device (1) may include one or more circuit board assemblies. For example, the display device (1) may include a control board (50) configured to control the operation of a plurality of light sources (110) and a display panel (10), and a power supply board (60) configured to supply power to the light source module (100) and the display panel (10).

[0099] For example, the control board (50) may include memory, a processor, etc. and a circuit board on which they are mounted. For example, the power supply board (60) may include a capacitor, a coil, a resistor element, a processor, etc. and a circuit board on which they are mounted.

[0100] The control board (50) may include a control circuit for controlling the operation of a plurality of light sources (110) and a display panel (10). The control circuit may process image data received from an external content source, transmit an image data signal to the display panel (10), and transmit a dimming data signal to the plurality of light sources (110).

[0101] The control board (50) can be connected to the light source board (120). The control board (50) can be connected to the light source board (120) via a cable or the like and can control a plurality of light sources (110). The control board (50) can be configured to supply driving current to the plurality of light sources (110). The control board (50) can control the on / off operation of each of the plurality of light sources (110).

[0102] FIG. 2 illustrates an example in which the control board (50) and the power supply board (60) are configured as separate circuit board assemblies, but alternatively, the control board (50) and the power supply board (60) may be configured as a single integrated board assembly.

[0103] The display device (1) may include a case provided to support various components of the display device (1). Various components of the display device (1) may be accommodated inside the case. The case may form the exterior of the display device (1).

[0104] For example, the case can support a display panel (10). For example, the case can support a backlight unit such as a light source module (100), a reflective sheet (16), and an optical sheet (15). For example, the case can support a control board (50). For example, the case can support a power supply board (60).

[0105] The case of the display device (1) may include a front chassis (80). The front chassis (80) may support the front or side of the display panel (10). For example, the front chassis (80) may be provided in the shape of a roughly rectangular frame. For example, the front chassis (80) may include a bezel (81) covering the front of the display panel (10) and a rear extension (82) extending rearward from the bezel (81).

[0106] The case of the display device (1) may include a middle mold (85). The middle mold (85) may be positioned between the front chassis (80) and the rear chassis (90). The middle mold (85) may be attached to the rear side of the front chassis (80). For example, the middle mold (85) may support at least some components of the backlight unit. For example, the middle mold (85) may include a side (86) provided in a square shape and an intermediate support (87) protruding from the side (86) to support the light guide plate (20) and the optical sheet (15).

[0107] The case of the display device (1) may include a rear chassis (90). The rear chassis (90) may cover the rear of a backlight unit, such as a light guide plate (20) and a light source module (100). The rear chassis (90) may be coupled to the rear side of a middle mold (85). The rear chassis (90) may support various components of the display device (1), such as a backlight unit, a control board (50), and a power supply board (60). For example, the rear chassis (90) may include a base (91) positioned at the rear of the light guide plate (20) and covering the light guide plate (20), and a front extension (92) extending forward from the edge of the base (91) and coupled to the middle mold (85).

[0108] The rear chassis (90) may be constructed to include a material with high thermal conductivity to dissipate heat generated from the light source module (100) to the outside. For example, the rear chassis (90) may be constructed to include a metal material such as aluminum or SUS, or a plastic material such as ABS.

[0109] The case of the display device (1) may include a board frame (93) provided to support a light source module (100). A light source board (120) may be coupled to and supported by the board frame (93). For example, the light source board (120) may be coupled to a part of the board frame (93) facing one periphery surface (e.g., lower periphery surface (24)) of the light guide plate (20). The board frame (93) may be coupled to and supported by the rear chassis (90). For example, the board frame (93) may include a material with high thermal conductivity such as aluminum and may be provided to receive heat generated from the light source module (100) and transfer it to the rear chassis (90). For example, a reflective sheet (16) may be supported by the board frame (93). According to one embodiment, the board frame (93) may be spaced apart from the rear chassis (90), but the present disclosure is not limited thereto. For example, according to one embodiment, the board frame (93) may be integrally formed with at least a part of the rear chassis (90).

[0110] The case of the display device (1) may include a rear cover (95). The rear cover (95) is positioned at the rear of the rear chassis (90) and can cover the rear chassis (90) and various components (e.g., a control board (50), a power supply board (60), etc.) mounted at the rear of the rear chassis (90). The rear cover (95) can form the rear exterior of the display device (1). For example, the aforementioned support leg (2) may be coupled to the rear cover (95).

[0111] However, unlike what has been described above, in various embodiments, the case of the display device (1) may not include any of the aforementioned components of the front chassis (80), middle mold (85), rear chassis (90), board frame (93), and rear cover (95). Alternatively, one or more of the aforementioned components of the front chassis (80), middle mold (85), rear chassis (90), board frame (93), and rear cover (95) may be combined into a single component.

[0112] The configuration of the display device (1) described above with reference to FIGS. 2 and FIGS. 3 is merely an example for explaining the display device (1) according to one embodiment of the present disclosure, and the present disclosure is not limited thereto. In various embodiments of the present disclosure, the display device may be provided to include various configurations for performing the function of providing an image through a screen.

[0113] FIG. 4 is a cross-sectional view illustrating some components of a display device according to one embodiment of the present disclosure.

[0114] Referring to FIG. 4, a display device (1) according to one embodiment of the present disclosure may include a rib (40) provided to maintain a separation distance between a light guide plate (20) and a plurality of light sources (110). The rib (40) may be provided to maintain a separation distance between a circumferential surface (23, 24, 25, 26) of the light guide plate (20) that faces the plurality of light sources (110) (e.g., a lower circumferential surface (24)) and the plurality of light sources (110). The rib (40) may include a rib (40B) supported by a light source board (120).

[0115] The rib (40B) may be positioned between the light guide plate (20) and the light source board (120). The rib (40B) may be positioned between the light source board (120) and one of the perimeter surfaces (23, 24, 25, 26) of the light guide plate (20) that faces a plurality of light sources (110) (e.g., lower perimeter surface (24)). The rib (40B) may be attached to one side of the light source board (120) that faces the light guide plate (20).

[0116] A rib (40B) may be placed between some of the light sources (110) among the plurality of light sources (110). A plurality of ribs (40B) may be provided, and the plurality of ribs (40B) may be placed between the light guide plate (20) and the light source board (120) and between some of the light sources (110). The number of ribs (40B) may be less than the number of light sources (110), and thus the plurality of ribs (40B) may not be placed between each of the plurality of light sources (110) but only between some of the light sources (110).

[0117] FIG. 3 illustrates an embodiment in which the distance between a light guide plate (20) and a plurality of light sources (110) is maintained by a rib (40A) coupled to a middle mold (85), and FIG. 4 illustrates an embodiment in which the distance between a light guide plate (20) and a plurality of light sources (110) is maintained by a rib (40B) mounted on a light source board (120). In various embodiments, some of the plurality of ribs (40) included in the display device (1) may be ribs (40A) according to the embodiment of FIG. 3, and other parts of the plurality of ribs (40) may be ribs (40B) according to the embodiment of FIG. 4. In various embodiments, each of the plurality of ribs (40) included in the display device (1) may be a rib (40A) according to the embodiment of FIG. 3. In various embodiments, each of the plurality of ribs (40) included in the display device (1) may be a rib (40B) according to the embodiment of FIG. 4.

[0118] In addition, the display device (1) may include various ribs arranged to maintain a distance between a plurality of light sources (110) and a light guide plate (20).

[0119] FIG. 5 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure. FIG. 6 is an enlarged view of a portion of each of a light source module, a corresponding screen, and a rib of a display device according to one embodiment of the present disclosure.

[0120] Referring to FIGS. 5 and 6, in a display device (1) according to one embodiment of the present disclosure, a plurality of light sources (110) may be arranged in one direction. For example, a plurality of light sources (110) may be arranged along the extension direction of a light source board (120). A plurality of ribs (40) may be arranged between some of the light sources (110) among the plurality of light sources (110) arranged in one direction.

[0121] A plurality of light sources (110) may include a plurality of light source groups separated by a plurality of ribs (40). Each of the plurality of ribs (40) may be positioned between the plurality of light source groups. A light source (110) included in each of the plurality of light source groups may be positioned between a pair of adjacent ribs (40) among the plurality of ribs (40).

[0122] A plurality of light sources (110) may include various number of light source groups, and the number of light source groups may vary depending on the number and arrangement of the ribs (40). Hereinafter, with reference to FIGS. 5 and 6, an embodiment in which a plurality of light sources (110) include at least three light source groups (a first light source group (111), a second light source group (112), and a third light source group (113)) is described, but various embodiments of the present disclosure are not limited thereto.

[0123] The number of light sources (110) included in each of the plurality of light source groups can be varied depending on the number and arrangement of the ribs (40). Hereinafter, with reference to FIGS. 5 and 6, an embodiment is described in which the first light source group (111) includes a first number (L) of light sources (110), the second light source group (112) includes a second number (M) of light sources (110), and the third light source group (113) includes a third number (N) of light sources (110), but the number of light sources (110) included in each light source group in various embodiments is not limited thereto.

[0124] A plurality of light sources (110) may include a first light source group (111) positioned between adjacent first ribs (41) and second ribs (42) among a plurality of ribs (40). The first light source group (111) may include light sources (110) positioned between the first rib (41) and the second rib (42). Hereinafter, a light source (110) included in the first light source group (111) is referred to as a first light source. The first light source group (111) may include a first number (L) of first light sources.

[0125] The first light sources included in the first light source group (111) may be arranged spaced apart from each other in one direction between the first rib (41) and the second rib (42). For example, the first light sources may be spaced apart from each other by a first spacing (d1). For example, the first light sources included in the first light source group (111) may be spaced apart from each other by the same first spacing (d1). However, according to the embodiment, even if the first light sources are generally spaced apart by almost the same first spacing (d1), some of the first light sources may be spaced apart by a different spacing from the spacing between other first light sources in consideration of avoiding interference with circuit elements, circuit lines, and other structures inside the display device (1) mounted on the light source board (120), such as a pixel IC.

[0126] A plurality of light sources (110) may include a second light source group (112) positioned between adjacent second ribs (42) and third ribs (43) among a plurality of ribs (40). The second light source group (112) may include light sources (110) positioned between the second ribs (42) and third ribs (43). Hereinafter, the light source (110) included in the second light source group (112) is referred to as the second light source. The second light source group (112) may include a second number (M) of second light sources.

[0127] For example, the first rib (41) may be placed on one side of the second rib (42), and the third rib (43) may be placed on the other side of the second rib (42) opposite to the first rib (41). The first rib (41) may be the closest rib (40) among the ribs (40) placed on one side of the second rib (42), and the third rib (43) may be the closest rib (40) among the ribs (40) placed on the other side of the second rib (42). The second rib (42) may be placed between the first rib (41) and the third rib (43). The first rib (41), the second rib (42), and the third rib (43) may be arranged in order along the direction in which the plurality of light sources (110) are arranged.

[0128] The second light sources included in the second light source group (112) may be arranged spaced apart from each other in one direction between the second rib (42) and the third rib (43). For example, the second light sources may be spaced apart from each other by a first interval (d1). For example, the second light sources included in the second light source group (112) may be spaced apart from each other by the same first interval (d1). However, according to the embodiment, even if the second light sources are generally spaced apart by almost the same first interval (d1), some of the second light sources may be spaced apart by a different interval from the interval between other second light sources in consideration of avoiding interference with circuit elements, circuit lines, and other structures inside the display device (1) mounted on the light source board (120), such as IC chips.

[0129] A plurality of light sources (110) may include a third light source group (113) positioned between adjacent third ribs (43) and fourth ribs (44) among a plurality of ribs (40). The third light source group (113) may include light sources (110) positioned between the third ribs (43) and fourth ribs (44). Hereinafter, the light source (110) included in the third light source group (113) is referred to as the third light source. The third light source group (113) may include a third number (N) of third light sources.

[0130] For example, the second rib (42) may be placed on one side of the third rib (43), and the fourth rib (44) may be placed on the other side of the third rib (43) opposite to the second rib (42). The second rib (42) may be the closest rib (40) among the ribs (40) placed on one side of the third rib (43), and the fourth rib (44) may be the closest rib (40) among the ribs (40) placed on the other side of the third rib (43). The third rib (43) may be placed between the second rib (42) and the fourth rib (44). The first rib (41), the second rib (42), the third rib (43), and the fourth rib (44) may be arranged in order along the direction in which the plurality of light sources (110) are arranged.

[0131] The third light sources included in the third light source group (113) may be arranged spaced apart from each other in one direction between the third rib (43) and the fourth rib (44). For example, the third light sources may be spaced apart from each other by a first interval (d1). For example, the third light sources included in the third light source group (113) may be spaced apart from each other by the same first interval (d1). However, according to the embodiment, even if the third light sources are generally spaced apart by almost the same first interval (d1), some of the third light sources may be spaced apart by a different interval from the interval between the other third light sources in consideration of avoiding interference with circuit elements, circuit lines, and other structures inside the display device (1) mounted on the light source board (120), such as IC chips.

[0132] The direction in which the first light source group (111), the second light source group (112), and the third light source group (113) are arranged may be the same as the direction in which the plurality of light sources (110) are arranged and the direction in which the plurality of ribs (40) (e.g., the first rib (41), the second rib (42), the third rib (43), and the fourth rib (44)) are arranged. For example, the plurality of light sources (110) may be arranged in a horizontal direction (Y), the plurality of ribs (40) may be arranged in the same horizontal direction (Y), and the first light source group (111), the second light source group (112), and the third light source group (113) may be arranged in the same horizontal direction (Y).

[0133] The screen of the display panel (10) may be divided into multiple regions corresponding to a plurality of light source groups. The display panel (10) may include multiple regions corresponding to a plurality of light source groups. The multiple regions may be arranged along the direction in which the plurality of light source groups are arranged.

[0134] For example, the display panel (10) may include a first region (11) corresponding to a first light source group (111). The first region (11) may correspond to first light sources included in the first light source group (111). Light emitted from the first light sources may pass through a light guide plate (20), etc. and be provided to the first region (11) of the display panel (10) at a high rate. A high rate of the light provided to the first region (11) of the display panel (10) may be light emitted from the first light sources. For example, the first region (11) may be located approximately in front of a portion of the light guide plate (20) facing the first light sources.

[0135] For example, the display panel (10) may include a second region (12) corresponding to a second light source group (112). The second region (12) may correspond to second light sources included in the second light source group (112). Light emitted from the second light sources may pass through a light guide plate (20), etc. and be provided to the second region (12) of the display panel (10) at a high rate. A high rate of the light provided to the second region (12) of the display panel (10) may be light emitted from the second light sources. For example, the second region (12) may be located approximately in front of a portion of the light guide plate (20) facing the second light sources.

[0136] For example, the display panel (10) may include a third region (13) corresponding to a third light source group (113). The third region (13) may correspond to the third light sources included in the third light source group (113). Light emitted from the third light sources may pass through a light guide plate (20), etc. and be provided to the third region (13) of the display panel (10) at a high rate. A high rate of the light provided to the third region (13) of the display panel (10) may be light emitted from the third light sources. For example, the third region (13) may be located approximately in front of a portion of the light guide plate (20) facing the third light sources.

[0137] The first region (11), the second region (12), and the third region (13) may be arranged in a direction in which the first light source group (111), the second light source group (112), and the third light source group (113) are arranged. The first region (11), the second region (12), and the third region (13) may be arranged in a direction in which the first rib (41), the second rib (42), the third rib (43), and the fourth rib (44) are arranged. The second region (12) may be placed between the first region (11) and the third region (13). For example, a plurality of light sources (110) may be arranged in a horizontal direction (Y), a first light source group (111), a second light source group (112), and a third light source group (113) may be arranged in a horizontal direction (Y), and a first area (11), a second area (12), and a third area (13) of a display panel (10) may be arranged in the same horizontal direction (Y).

[0138] For uniformity of brightness provided through the display panel (10), a plurality of light sources (110) may be arranged with a generally uniform first interval (d1). However, light sources (110) may not be placed in the area where the rib (40) is located. Accordingly, as shown in FIG. 5, a pair of light sources (110) that are placed on both sides relative to the rib (40) and closest to the rib (40) may be spaced apart by a second interval (d2) that is larger than the first interval (d1). A group of light sources located on one side of the rib (40) (e.g., a first light source group (111)) and a group of light sources located on the other side of the rib (40) (e.g., a second light source group (112)) may be spaced apart by a second interval (d2) that is larger than the first interval (d1) in which the light sources (110) included in each light source group are spaced apart from each other.

[0139] For example, the first light source group (111) and the second light source group (112) may be spaced apart from each other by a second distance (d2). Among the first light sources included in the first light source group (111), the first light source closest to the second rib (42) and among the second light sources included in the second light source group (112), the second light source closest to the second rib (42) may be spaced apart from each other by a second distance (d2).

[0140] For example, the second light source group (112) and the third light source group (113) may be spaced apart from each other by a second distance (d2). Among the second light sources included in the second light source group (112), the second light source closest to the third rib (43) and among the third light sources included in the third light source group (113), the third light source closest to the third rib (43) may be spaced apart from each other by a second distance (d2).

[0141] As each of the multiple light sources (110) emits light in various directions, the brightness on the screen of the display panel (10) should have relatively high uniformity, but as described above, since the second gap (d2) between the light source groups (111, 112, 113) is larger than the first gap (d1) between the light sources (110) included in each of the light source groups (111, 112, 113), the brightness may become discontinuous at the boundaries between each region (11, 12, 13) of the display panel (10).

[0142] Furthermore, ribs (40) (e.g., a second rib (42), a third rib (43)) may be placed between the light source groups (111, 112, 113), and the ribs (40) may block some of the light emitted from the light source (110). For example, the ribs (40) may prevent the light from traveling in a direction inclined with respect to the vertical direction (Z) so that the light emitted from each light source group (111, 112, 113) is provided to areas other than the corresponding areas among the areas (11, 12, 13) of the display panel (10).

[0143] For example, light emitted from the first light sources included in the first light source group (111) may be provided to the second region (12) at a relatively low rate due to causes such as a relatively long distance from the second light source group (112) or interference by the second rib (42). Similarly, light emitted from the second light sources included in the second light source group (112) may be provided to the first region (11) at a relatively low rate due to causes such as a relatively long distance from the first light source group (111) or interference by the second rib (42). Thus, if there is a difference between the amount of light emitted from the first light source group (111) and the amount of light emitted from the second light source group (112) in one embodiment, a difference in brightness may occur between the first region (11) and the second region (12). This is also true for the relationship between the second light source group (112) and the third light source group (113), and the relationship between the second region (12) and the third region (13).

[0144] According to various embodiments, the number of light sources (110) included in each of the light source groups (111, 112, 113) may differ from one another. Thus, if the same amount of current is supplied to the light source groups (111, 112, 113), there may be a difference in the amount of light emitted from the light source groups (111, 112, 113).

[0145] For example, the first light source group (111) may include a first number (L) of first light sources, and the second light source group (112) may include a second number (M) of second light sources greater than the first number (L). If the same amount of current is supplied to the first light sources included in the first light source group (111) and to the second light sources included in the second light source group (112), the amount of light emitted from the first light source group (111) becomes smaller than the amount of light emitted from the second light source group (112), and the brightness of the first area (11) may be lower than the brightness of the second area (12). If the difference in brightness between the first area (11) and the second area (12) is sufficiently large, the first area (11) may be perceived as a relatively dark area to the viewer.

[0146] Accordingly, in order to reduce the difference in brightness between the first region (11) and the second region (12) and to reduce and / or prevent the first region (11) from being seen as a dark area, a current of a first size may be supplied to at least some of the first light sources of the first light source group (111) positioned between the first rib (41) and the second rib (42), and a current of a second size smaller than the first size may be supplied to at least some of the second light sources of the second light source group (112) positioned between the second rib (42) and the third rib (43). The control board (50) can supply a current of a first size to at least some of the first light sources of a first light source group (111) positioned between the first rib (41) and the second rib (42), and can supply a current of a second size smaller than the first size to at least some of the second light sources of a second light source group (112) positioned between the second rib (42) and the third rib (43).

[0147] The difference between the first magnitude current and the second magnitude current can be determined based on the difference between the brightness of the light emitted from the first region (11) and the brightness of the light emitted from the second region (12). For example, the difference between the first magnitude current and the second magnitude current can be determined experimentally or empirically in various ways.

[0148] Thus, the difference between the amount of light emitted from the first light source group (111) and the amount of light emitted from the second light source group (112) can be reduced, and the difference in brightness between the first region (11) and the second region (12) can be reduced, thereby reducing and / or preventing the first region (11) from being seen as a dark area.

[0149] According to one embodiment, the current supplied to each of the plurality of light sources (110) may vary based on a driving signal generated by the control board (50). That is, the current supplied to not only different light sources (110) but also to a single light source (110) may vary continuously based on the driving signal generated by the control board (50). In this embodiment, the fact that a current of a first size is supplied to at least some of the first light sources of the first light source group (111) may mean that the maximum current that can be supplied to the light sources is of the first size, and the fact that a current of a second size smaller than the first size is supplied to at least some of the second light sources of the second light source group (112) may mean that the maximum current that can be supplied to the light sources is of the second size smaller than the first size. However, the embodiments of the present disclosure are not limited thereto, and various embodiments may mean that a current of a first size is supplied to at least some of the first light sources of the first light source group (111), that the average current supplied to the light sources is of a first size, and that a current of a second size smaller than the first size is supplied to at least some of the second light sources of the second light source group (112), that the average current supplied to the light sources is of a second size smaller than the first size.

[0150] According to one embodiment, the third light source group (113) may include a third number (N) of third light sources that is larger than the first number (L) and smaller than the second number (M).

[0151] If the same amount of current is supplied to the second light sources of the second light source group (112) and the third light sources of the third light source group (113), a difference may occur between the amount of light emitted from the second light source group (112) and the amount of light emitted from the third light source group (113) due to the difference between the second number (M) and the third number (N), and a difference may occur between the brightness of the second region (12) and the brightness of the third region (13). In this case, if the difference between the second number (M) and the third number (N) is greater than a certain number, the difference between the brightness of the second region (12) and the brightness of the third region (13) due to the difference between the second number (M) and the third number (N) becomes sufficiently large, so that the third region (13) may be perceived as a dark area by the viewer. Conversely, if the difference between the second number (M) and the third number (N) is less than a certain number, the difference between the brightness of the second area (12) and the brightness of the third area (13) due to the difference between the second number (M) and the third number (N) is not sufficiently large, so the third area (13) may not be perceived as a dark area by the viewer.

[0152] Accordingly, according to one embodiment, when the difference between the second number (M) and the third number (N) is greater than a certain number, a current of a first size may be supplied to at least some of the third light sources of the third light source group (113). According to one embodiment, when the difference between the second number (M) and the third number (N) is less than a certain number, a current of a second size may be supplied to at least some of the third light sources of the third light source group (113).

[0153] According to one embodiment, the third light source group (113) may include a third number (N) of third light sources that is larger than the first number (L) and smaller than the second number (M), and at least some of the third light sources of the third light source group (113) may be supplied with a third size current that is smaller than the first size and larger than the second size.

[0154] According to one embodiment, the third light source group (113) may include a third number (N) of third light sources that is greater than the second number (M). According to one embodiment, when the difference between the second number (M) and the third number (N) is greater than a certain number, a current of a third size smaller than the second size may be supplied to at least some of the third light sources of the third light source group (113). According to one embodiment, when the difference between the second number (M) and the third number (N) is less than a certain number, a current of a second size may be supplied to at least some of the third light sources of the third light source group (113).

[0155] By controlling the current supplied to the light sources (110) in this manner, the uniformity of brightness of the display panel (10) can be improved, and the visibility of dark areas can be reduced and / or prevented.

[0156] According to one embodiment, the same amount of current may be supplied to light sources (110) included in the same light source group among the light source groups (111, 112, 113). For example, the same amount of current may be supplied to each of the first light sources included in the first light source group (111). For example, the same amount of current may be supplied to each of the second light sources included in the second light source group (112).

[0157] However, the embodiments of the present disclosure are not limited thereto, and the magnitude of the current supplied to each light source (110) may be varied as long as it can reduce the visibility of dark areas due to differences in brightness. For example, among the first number (L) of first light sources included in the first light source group (111), a first magnitude of current may be supplied to at least some of the first light sources adjacent to the second light source group (112) (e.g., some of the first light sources adjacent to the second rib (42), and a second number (M) (L) of light sources included in the second light source group (112) <M)의 제2 광원들 중 적어도 제1 광원 그룹(111)과 인접한 일부의 제2 광원들(예를 들어, 제2 리브(42)와 인접한 일부의 제2 광원들)에는 제1 크기보다 작은 제2 크기의 전류가 공급될 수 있다.

[0158] Hereinafter, various examples of a method of supplying current to light sources (110) included in adjacent light source groups to improve the uniformity of brightness are described, using the first light source group (111) and the second light source group (112) as examples.

[0159] FIG. 7 is a drawing illustrating some light source groups and dimming blocks included in a light source module of a display device according to one embodiment of the present disclosure.

[0160] Referring to FIG. 7, a plurality of light sources (110) included in a display device (1) according to one embodiment of the present disclosure may form (e.g., include) a plurality of dimming blocks (B) comprising a predetermined number of light sources (110). The plurality of light sources (110) may be divided into a plurality of dimming blocks (B).

[0161] In FIG. 7, each dimming block (B) is illustrated as an example of including five light sources (110), but embodiments of the present disclosure are not limited thereto, and each dimming block (B) may include various numbers of light sources (110). According to one embodiment, each of the plurality of dimming blocks (B) may include the same number of light sources (110), but is not limited thereto, and some of the plurality of dimming blocks (B) may include different numbers of light sources (110).

[0162] The control board (50) can control the current supplied to each dimming block (B) according to the input image. The control board (50) can efficiently improve the contrast ratio by lowering the current supplied to the dimming block (B) corresponding to the dark area of ​​the input image and increasing the current supplied to the dimming block (B) corresponding to the bright area of ​​the input image. For example, the same driving current may be supplied to light sources (110) belonging to the same dimming block (B), and light sources (110) belonging to the same dimming block (B) may emit light of the same brightness. For example, different driving currents may be supplied to light sources (110) belonging to some of different dimming blocks (B) according to the dimming data, and light sources (110) belonging to some of different dimming blocks (B) may emit light of different brightness.

[0163] According to one embodiment, among a plurality of dimming blocks (B), a first dimming block (B1) may include a portion of a first light source adjacent to a second light source group (112) among the first light sources included in a first light source group (111). The first dimming block (B1) may include a portion of a first light source adjacent to a second rib (42) among the first light sources included in the first light source group (111). A first magnitude of current may be supplied to each of the light sources (110) included in the first dimming block (B1).

[0164] According to one embodiment, among a plurality of dimming blocks (B), a second dimming block (B2) may include a portion of second light sources adjacent to the first light source group (111) among the second light sources included in the second light source group (112). The second dimming block (B2) may include a portion of second light sources adjacent to the second rib (42) among the second light sources included in the second light source group (112). A current of a second size smaller than a first size may be supplied to each of the light sources (110) included in the second dimming block (B2).

[0165] As illustrated in FIG. 7, according to one embodiment, the first dimming block (B1) may include a first light source closest to the second rib (42) among the first light sources of the first light source group (111) disposed between the first rib (41) and the second rib (42). By including the first light source closest to the second rib (42) among the first light sources of the first light source group (111) disposed between the first rib (41) and the second rib (42), a first magnitude of current may be supplied to the entire first dimming block (B1).

[0166] As illustrated in FIG. 7, according to one embodiment, the second dimming block (B2) may include the second light source closest to the second rib (42) among the second light sources of the second light source group (112) disposed between the second rib (42) and the third rib (43). By including the second light source closest to the second rib (42) among the second light sources of the second light source group (112) disposed between the second rib (42) and the third rib (43), a current of a second size smaller than a first size may be supplied to the entire second dimming block (B2).

[0167] According to one embodiment, some of the dimming blocks (B) among the plurality of dimming blocks (B) may have all the light sources (110) included therein positioned between the first rib (41) and the second rib (42). For example, all the light sources (110) included in the first dimming block (B1) may be first light sources positioned between the first rib (41) and the second rib (42). A first magnitude of current may be supplied to some of the dimming blocks (B) that include only the first light sources.

[0168] According to one embodiment, some of the dimming blocks (B) among the plurality of dimming blocks (B) may have all the light sources (110) included therein positioned between the second rib (42) and the third rib (43). For example, the light sources (110) included in the second dimming block (B2) may all be second light sources positioned between the second rib (42) and the third rib (43). A current of a second size smaller than a first size may be supplied to some of the dimming blocks (B) that include only the second light sources.

[0169] FIG. 8 is a drawing illustrating some light source groups and dimming blocks included in a light source module of a display device according to one embodiment of the present disclosure.

[0170] Referring to FIG. 8, a plurality of light sources (110) included in a display device (1) according to one embodiment of the present disclosure may form a plurality of dimming blocks (B) including a predetermined number of light sources (110).

[0171] According to one embodiment, among a plurality of dimming blocks (B), a first dimming block (B1) may include a portion of a first light source adjacent to a second light source group (112) among the first light sources included in a first light source group (111). The first dimming block (B1) may include a portion of a first light source adjacent to a second rib (42) among the first light sources included in the first light source group (111).

[0172] As illustrated in FIG. 8, according to one embodiment, the first dimming block (B1) may include a first light source closest to the second rib (42) among the first light sources of a first light source group (111) disposed between the first rib (41) and the second rib (42). According to one embodiment, the first dimming block (B1) may also include some second light sources adjacent to the second rib (42) among the second light sources of a second light source group (112) disposed between the second rib (42) and the third rib (43). For example, among the light sources (110) included in the first dimming block (B1), the number of first light sources may be greater than the number of second light sources, but the embodiments of the present disclosure are not limited thereto. A first magnitude of current can be supplied to each light source (110) included in the first dimming block (B1) (including a first light source included in the first light source group (111) and a second light source included in the second light source group (112)).

[0173] According to one embodiment, among a plurality of dimming blocks (B), a second dimming block (B2) may include a portion of a second light source adjacent to a first light source group (111) among the second light sources included in a second light source group (112). The second dimming block (B2) may include a portion of a second light source adjacent to a second rib (42) among the second light sources included in the second light source group (112).

[0174] As illustrated in FIG. 8, according to one embodiment, the second dimming block (B2) includes second light sources adjacent to the second rib (42) among the second light sources of the second light source group (112) disposed between the second rib (42) and the third rib (43), but may not include one second light source closest to the second rib (42). A current of a second size smaller than a first size may be supplied to each light source (110) included in the second dimming block (B2).

[0175] FIG. 9 is a drawing illustrating some light source groups and dimming blocks included in a light source module of a display device according to one embodiment of the present disclosure.

[0176] Referring to FIG. 9, a plurality of light sources (110) included in a display device (1) according to one embodiment of the present disclosure may form a plurality of dimming blocks (B) including a predetermined number of light sources (110).

[0177] According to one embodiment, among a plurality of dimming blocks (B), a first dimming block (B1) may include a portion of a first light source adjacent to a second light source group (112) among the first light sources included in a first light source group (111). The first dimming block (B1) may include a portion of a first light source adjacent to a second rib (42) among the first light sources included in the first light source group (111).

[0178] As illustrated in FIG. 9, according to one embodiment, the first dimming block (B1) includes first light sources adjacent to the second rib (42) among the first light sources of the first light source group (111) disposed between the first rib (41) and the second rib (42), but may not include one first light source closest to the second rib (42). A first magnitude of current may be supplied to each light source (110) included in the first dimming block (B1).

[0179] According to one embodiment, among a plurality of dimming blocks (B), a second dimming block (B2) may include a portion of a second light source adjacent to a first light source group (111) among the second light sources included in a second light source group (112). The second dimming block (B2) may include a portion of a second light source adjacent to a second rib (42) among the second light sources included in the second light source group (112).

[0180] As illustrated in FIG. 9, according to one embodiment, the second dimming block (B2) may include the second light source closest to the second rib (42) among the second light sources of the second light source group (112) disposed between the second rib (42) and the third rib (43). According to one embodiment, the second dimming block (B2) may also include some of the first light sources adjacent to the second rib (42) among the first light sources of the first light source group (111) disposed between the first rib (41) and the second rib (42). For example, the number of second light sources among the light sources (110) included in the second dimming block (B2) may be greater than the number of first light sources, but the embodiments of the present disclosure are not limited thereto. A current of a second size smaller than a first size can be supplied to each light source (110) included in the second dimming block (B2) (including a first light source included in the first light source group (111) and a second light source included in the second light source group (112)).

[0181] As described with reference to FIGS. 7, 8, and 9 in addition to FIGS. 5 and 6, the uniformity of brightness of the display panel (10) can be improved by adjusting the current supplied to each of the light sources (110) based on the number of light sources (110) placed between adjacent pairs of ribs (40) in various embodiments.

[0182] According to various embodiments, the dimming block (B) in the plurality of light sources (110) may be formed in a shape such as that of any one of the embodiments of FIG. 7, FIG. 8, and FIG. 9. According to various embodiments, the dimming block (B) in the plurality of light sources (110) may be formed in a shape such as that of two or more of the embodiments of FIG. 7, FIG. 8, and FIG. 9.

[0183] FIG. 10 is an enlarged view of a portion of a light source module of a display device according to one embodiment of the present disclosure. FIG. 11 is an enlarged view of a portion of each of a light source module of a display device and a corresponding screen according to one embodiment of the present disclosure.

[0184] In describing an embodiment of the present disclosure with reference to FIGS. 10 and 11, configurations corresponding to embodiments shown in FIGS. 1 to 9 may be referred to by the same reference numerals and detailed descriptions may not be repeated.

[0185] Referring to FIGS. 10 and 11, a display device (1) according to one embodiment of the present disclosure may include a plurality of light source boards (120). The plurality of light source boards (120) may be arranged side by side along one periphery surface of a light guide plate (20). For example, the plurality of light source boards (120) may be arranged in a horizontal direction (Y) side by side with the lower periphery surface (24) of the light guide plate (20). The plurality of light source boards (120) may be arranged spaced apart from each other.

[0186] A plurality of light sources (110) may include a plurality of light source groups corresponding to a plurality of light source boards (120). For example, one light source group may correspond to one light source board (120). For example, light sources (110) included in one light source group may be mounted on one light source board (120).

[0187] A plurality of light sources (110) may include various number of light source groups, and the number of light source groups may vary depending on the number, length, and arrangement of light source boards (120). Hereinafter, with reference to FIGS. 10 and FIGS. 11, an embodiment is described in which the light source board (120) includes at least three light source boards (first light source board (121), second light source board (122), third light source board (123)) and the plurality of light sources (110) include at least three light source groups (first light source group (111), second light source group (112), third light source group (113)), but various embodiments of the present disclosure are not limited thereto.

[0188] A plurality of light sources (110) may include a first light source group (111) comprising a first number (L) of first light sources mounted on a first light source board (121). The first light sources included in the first light source group (111) may be arranged spaced apart from one another in one direction on the first light source board (121). For example, the first light sources may be spaced apart from each other by a first interval (d1). For example, the first light sources included in the first light source group (111) may be spaced apart from each other by the same first interval (d1). However, according to the embodiment, even if the first light sources are generally spaced apart by almost the same first spacing (d1), some of the first light sources may be spaced apart by a spacing different from the spacing between the other first light sources in consideration of avoiding interference with circuit elements, circuit lines, and other structures inside the display device (1) mounted on the light source board (120), such as pixel ICs.

[0189] A plurality of light sources (110) may include a second light source group (122) comprising a second number (M) of second light sources mounted on a second light source board (122). The second light sources included in the second light source group (112) may be arranged spaced apart from one another in one direction on the second light source board (122). For example, the second light sources may be spaced apart from each other by a first interval (d1). For example, the second light sources included in the second light source group (112) may be spaced apart from each other by the same first interval (d1). However, according to the embodiment, even if the second light sources are generally spaced apart by almost the same first spacing (d1), some of the second light sources may be spaced apart by a spacing different from the spacing between the other second light sources in consideration of avoiding interference with circuit elements, circuit lines, and other structures inside the display device (1) mounted on the light source board (120), such as IC chips.

[0190] A plurality of light sources (110) may include a third light source group (113) comprising a third number (N) of third light sources mounted on a third light source board (123). The third light sources included in the third light source group (113) may be arranged spaced apart from one another in one direction on the third light source board (123). For example, the third light sources may be spaced apart from each other by a first interval (d1). For example, the third light sources included in the third light source group (113) may be spaced apart from each other by the same first interval (d1). However, according to the embodiment, even if the third light sources are generally spaced apart by almost the same first spacing (d1), some of the third light sources may be spaced apart by a spacing different from the spacing between the other third light sources in consideration of avoiding interference with circuit elements, circuit lines, and other structures inside the display device (1) mounted on the light source board (120), such as IC chips.

[0191] The first light source board (121), the second light source board (122), and the third light source board (123) may be arranged in order along the direction in which the plurality of light sources (110) are arranged (e.g., the horizontal direction (Y)). For example, the second light source board (122) may be placed between the first light source board (121) and the third light source board (123). The arrangement direction and order of the first light source board (121), the second light source board (122), and the third light source board (123) may be the same as the arrangement direction and order of the first light source group (111), the second light source group (112), and the third light source group (113).

[0192] The screen of the display panel (10) may be divided into multiple regions corresponding to a plurality of light source groups. The display panel (10) may include multiple regions corresponding to a plurality of light source groups. The multiple regions may be arranged along the direction in which the plurality of light source groups are arranged.

[0193] For example, the display panel (10) may include a first region (11) corresponding to a first light source group (111). The first region (11) may correspond to first light sources mounted on a first light source board (121). Light emitted from the first light sources mounted on the first light source board (121) may pass through a light guide plate (20), etc. and be provided to the first region (11) of the display panel (10) at a high rate. A high rate of the light provided to the first region (11) of the display panel (10) may be light emitted from the first light sources. For example, the first region (11) may be located approximately in front of a portion of the light guide plate (20) facing the first light sources.

[0194] For example, the display panel (10) may include a second region (12) corresponding to a second light source group (112). The second region (12) may correspond to second light sources mounted on a second light source board (122). Light emitted from the second light sources mounted on the second light source board (122) may pass through a light guide plate (20), etc. and be provided to the second region (12) of the display panel (10) at a high rate. A high rate of the light provided to the second region (12) of the display panel (10) may be light emitted from the second light sources. For example, the second region (12) may be located approximately in front of a portion of the light guide plate (20) facing the second light sources.

[0195] For example, the display panel (10) may include a third region (13) corresponding to a third light source group (113). The third region (13) may correspond to third light sources mounted on a third light source board (123). Light emitted from the third light sources mounted on the third light source board (123) may pass through a light guide plate (20), etc. and be provided to the third region (13) of the display panel (10) at a high rate. A high rate of the light provided to the third region (13) of the display panel (10) may be light emitted from the third light sources. For example, the third region (13) may be located approximately in front of a portion of the light guide plate (20) facing the third light sources.

[0196] The first area (11), the second area (12), and the third area (13) may be arranged in a direction in which the first light source group (111), the second light source group (112), and the third light source group (113) are arranged. The first area (11), the second area (12), and the third area (13) may be arranged in a direction in which the first light source board (121), the second light source board (122), and the third light source board (123) are arranged. The second area (12) may be placed between the first area (11) and the third area (13).

[0197] The first light sources of the first light source group (111) mounted on the first light source board (121) can be arranged spaced apart by approximately a first interval (d1). The second light sources of the second light source group (112) mounted on the second light source board (122) can be arranged spaced apart by approximately a first interval (d1). The third light sources of the third light source group (113) mounted on the third light source board (123) can be arranged spaced apart by approximately a first interval (d1).

[0198] The first light source board (121) and the second light source board (122) may be spaced apart from each other. Accordingly, the first light source closest to the second light source board (122) among the first light sources of the first light source group (111) placed on the first light source board (121) and the second light source closest to the first light source board (121) among the second light sources of the second light source group (112) placed on the second light source board (122) may be spaced apart from each other by a second gap (d2) which is larger than the first gap (d1).

[0199] The second light source board (122) and the third light source board (123) may be spaced apart from each other. Accordingly, the second light source closest to the third light source board (123) among the second light sources of the second light source group (112) placed on the second light source board (122) and the third light source closest to the second light source board (122) among the third light sources of the third light source group (113) placed on the third light source board (123) may be spaced apart from each other by a second gap (d2) which is larger than the first gap (d1).

[0200] As each of the multiple light sources (110) emits light in various directions, the brightness on the screen of the display panel (10) should have relatively high uniformity, but as described above, since the second gap (d2) between the light source groups (111, 112, 113) is larger than the first gap (d1) between the light sources (110) included in each of the light source groups (111, 112, 113), the brightness may become discontinuous at the boundaries between each region (11, 12, 13) of the display panel (10).

[0201] According to various embodiments, the number of light sources (110) included in each of the light source groups (111, 112, 113) may differ from one another. Thus, if the same amount of current is supplied to the light source groups (111, 112, 113), there may be a difference in the amount of light emitted from the light source groups (111, 112, 113).

[0202] For example, a first number (L) of first light sources may be mounted on the first light source board (121), and a second number (M) of second light sources, which is greater than the first number (L), may be mounted on the second light source board (122). If the same amount of current is supplied to the first light sources mounted on the first light source board (121) and to the second light sources mounted on the second light source board (122), the amount of light emitted from the first light source group (111) becomes smaller than the amount of light emitted from the second light source group (112), and the brightness of the first area (11) may be lower than the brightness of the second area (12). If the difference in brightness between the first area (11) and the second area (12) is sufficiently large, the first area (11) may be perceived as a relatively dark area by the viewer.

[0203] Accordingly, in order to reduce the difference in brightness between the first region (11) and the second region (12) and to reduce and / or prevent the first region (11) from being seen as a dark area, a current of a first size may be supplied to at least some of the first light sources of the first light source group (111) mounted on the first light source board (121), and a current of a second size smaller than the first size may be supplied to at least some of the second light sources of the second light source group (112) mounted on the second light source board (122). The control board (50) may supply a current of a first size to at least some of the first light sources of the first light source group (111) mounted on the first light source board (121), and may supply a current of a second size smaller than the first size to at least some of the second light sources of the second light source group (112) mounted on the second light source board (122).

[0204] According to one embodiment, a current of a first size may be supplied to at least some of the first light sources of a first light source group (111) mounted on a first light source board (121) that are adjacent to a second light source board (122), and for example, the at least some of the first light sources may include the first light source closest to the second light source board (122) among the first light sources of the first light source group (111). According to one embodiment, a current of a second size smaller than the first size may be supplied to at least some of the first light sources of a second light source group (112) mounted on a second light source board (122) that are adjacent to the first light source board (121), and for example, the at least some of the second light sources may include the second light source closest to the first light source board (121) among the second light sources of the second light source group (112).

[0205] The difference between the first magnitude current and the second magnitude current can be determined based on the difference between the brightness of the light emitted from the first region (11) and the brightness of the light emitted from the second region (12). For example, the difference between the first magnitude current and the second magnitude current can be determined experimentally or empirically in various ways.

[0206] According to one embodiment, a third number (N) of third light sources, which is greater than a first number (L) and smaller than a second number (M), may be mounted on the third light source board (123). According to one embodiment, when the difference between the second number (M) and the third number (N) is greater than a certain number, a current of a first size may be supplied to at least some of the third light sources mounted on the third light source board (123). According to one embodiment, when the difference between the second number (M) and the third number (N) is less than a certain number, a current of a second size may be supplied to at least some of the third light sources mounted on the third light source board (123).

[0207] According to one embodiment, a third number (N) of third light sources, which is larger than a first number (L) and smaller than a second number (M), may be mounted on the third light source board (123), and a current of a third size, which is smaller than a first size and larger than a second size, may be supplied to at least some of the third light sources mounted on the third light source board (123).

[0208] According to one embodiment, the third light source board (123) may include a third number (N) of third light sources that is greater than the second number (M). According to one embodiment, when the difference between the second number (M) and the third number (N) is greater than a certain number, a current of a third size smaller than the second size may be supplied to at least some of the third light sources mounted on the third light source board (123). According to one embodiment, when the difference between the second number (M) and the third number (N) is less than a certain number, a current of a second size may be supplied to at least some of the third light sources mounted on the third light source board (123).

[0209] By controlling the current supplied to the light sources (110) in this manner, the uniformity of brightness of the display panel (10) can be improved, and the visibility of dark areas can be reduced and / or prevented.

[0210] According to one embodiment, the same amount of current may be supplied to light sources (110) mounted on the same light source board among a plurality of light source boards (121, 122, 123). However, the embodiments of the present disclosure are not limited thereto, and the amount of current supplied to each light source (110) may be varied as long as it can reduce the visibility of dark areas due to differences in brightness.

[0211] In the above description, with reference to FIGS. 10 and 11, an embodiment in which a plurality of light sources (100) are separated into different light source groups as a plurality of light source boards (120) are spaced apart from each other has been described. In various embodiments, the plurality of light sources (100) may be separated into different light source groups by a plurality of ribs (40) as described with reference to FIGS. 5 to 9, the plurality of light sources (100) may be separated into different light source groups by a plurality of light source boards (120) as described with reference to FIGS. 10 and 11, or the plurality of light sources (100) may be separated into different light source groups by both a plurality of ribs (40) and a plurality of light source boards (120).

[0212] FIG. 12 is a diagram showing the maximum current supplied to regions on the screen of a display device and corresponding light sources according to one embodiment of the present disclosure. FIG. 13 is a diagram showing the maximum current supplied to regions on the screen of a display device and corresponding light sources according to one embodiment of the present disclosure.

[0213] FIGS. 12 and FIGS. 13 illustrate various examples of the magnitude of the current supplied to the light sources (110) according to the number of light sources (110) included in each of the plurality of light source groups.

[0214] Referring to FIG. 12 and FIG. 13, according to one embodiment of the present disclosure, the difference in current supplied to light sources (110) can be determined based on the brightness of light shipped onto the screen of the display panel (10).

[0215] According to one embodiment, a plurality of light sources (100) may include a plurality of light source groups that are distinct from one another as described with reference to FIGS. 5 to 11, and the number of light sources (110) included in the plurality of light source groups may be different from one another.

[0216] For example, the 10A region shown in FIGS. 12 and FIGS. 13 may correspond to a light source group (hereinafter referred to as the 'first light source group') comprising a first number of light sources (110), the 10B region may correspond to a light source group (hereinafter referred to as the 'second light source group') comprising a second number of light sources (110) greater than the first number, and the 10C region may correspond to a light source group (hereinafter referred to as the 'third light source group') comprising a third number of light sources (110) greater than the second number.

[0217] If the same amount of current is supplied to each of the first light source group, the second light source group, and the third light source group, the amount of light from the first light source group may be the smallest, and the amount of light from the third light source group may be the largest. Therefore, the brightness of the 10A region may be the lowest, and the brightness of the 10C region may be the highest.

[0218] To reduce the difference in brightness between regions 10A, 10B, and 10C, the control board (50) can supply the largest current to the first light source group, supply a current smaller than the current supplied to the first light source group to the second light source group, and supply a current smaller than the current supplied to the second light source group to the third light source group.

[0219] In FIGS. 12 and 13, when the magnitude of the current supplied to the first light source group is 100%, the magnitude of the current supplied to the second light source group is 95% and the magnitude of the current supplied to the third light source group is 92%, but the ratio of the magnitudes of each current is not limited thereto.

[0220] By supplying different currents to the light sources (110) in this manner, the uniformity of brightness on the screen can be improved and the visibility of dark areas can be reduced and / or prevented.

[0221] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate and configured to emit light toward the one periphery surface of the light guide plate, a light source board on which the plurality of light sources are arranged, a plurality of ribs disposed between the light guide plate and the light source board to maintain a separation distance between the light guide plate and the plurality of light sources and disposed between some of the plurality of light sources, and a control board connected to the light source board and configured to supply driving current to the plurality of light sources. A first number of first light sources among the plurality of light sources may be disposed between a first rib and a second rib adjacent to each other among the plurality of ribs. A second number of second light sources, which is greater than the first number, may be disposed between a second rib and a third rib adjacent to the second rib among the plurality of ribs. The control board may be configured to supply a current of a first size to at least some of the first light sources disposed between the first rib and the second rib, and to supply a current of a second size smaller than the first size to at least some of the second light sources disposed between the second rib and the third rib.

[0222] The control board above may be configured to supply a current of the first size to the light source closest to the second rib among the first light sources disposed between the first rib and the second rib.

[0223] The control board above may be configured to supply a current of the second size to the light source closest to the second rib among the second light sources disposed between the second rib and the third rib.

[0224] The plurality of light sources may form a plurality of dimming blocks comprising a predetermined number of light sources. In some of the plurality of dimming blocks, all light sources included in the portion of the dimming blocks may be arranged between the first rib and the second rib. The control board may be configured to supply a current of the first magnitude to each of the light sources included in the portion of the dimming blocks.

[0225] The plurality of light sources may form a plurality of dimming blocks comprising a predetermined number of light sources. One of the plurality of dimming blocks may include the light source closest to the second rib among the first light sources disposed between the first rib and the second rib. The control board may be configured to supply a current of the first magnitude to each of the light sources included in the single dimming block.

[0226] The above-mentioned dimming block may include some light sources adjacent to the second rib among the second light sources disposed between the second rib and the third rib.

[0227] The plurality of light sources may form a plurality of dimming blocks comprising a predetermined number of light sources. In some of the plurality of dimming blocks, all light sources included in said dimming blocks may be positioned between said second rib and said third rib. The control board may be configured to supply a current of said second magnitude to each of said light sources included in said dimming blocks.

[0228] The plurality of light sources may form a plurality of dimming blocks comprising a predetermined number of light sources. One of the plurality of dimming blocks may include the light source closest to the second rib among the second light sources disposed between the second rib and the third rib. The control board may be configured to supply a current of the second magnitude to each of the light sources included in the single dimming block.

[0229] The above-mentioned dimming block may include some of the first light sources adjacent to the second rib among the first light sources disposed between the first rib and the second rib.

[0230] The first light sources positioned between the first rib and the second rib may be arranged spaced apart from each other by a first interval. The second light sources positioned between the second rib and the third rib may be arranged spaced apart from each other by the first interval. Among the first light sources positioned between the first rib and the second rib, the light source closest to the second rib, and among the second light sources positioned between the second rib and the third rib, the light source closest to the second rib may be spaced apart from each other by a second interval larger than the first interval.

[0231] Among the plurality of ribs, a third number of third light sources, which is greater than the first number and smaller than the second number, may be disposed between the third rib and the fourth rib adjacent to the third rib. The control board may be configured to supply a current of the second size to at least some of the third light sources disposed between the third rib and the fourth rib.

[0232] Among the plurality of ribs, a third number of third light sources greater than the second number may be disposed between the third rib and the fourth rib adjacent to the third rib. The control board may be configured to supply a current of a third size smaller than the second size to at least some of the third light sources disposed between the third rib and the fourth rib.

[0233] The current of the first magnitude may be the maximum current supplied to at least some of the first light sources. The current of the second magnitude may be the maximum current supplied to at least some of the second light sources.

[0234] The second rib may be positioned between the first rib and the third rib. The first rib, the second rib, and the third rib may be arranged sequentially along one direction in which the plurality of light sources are arranged.

[0235] The display panel may include a first region corresponding to the first light sources disposed between the first rib and the second rib among the plurality of light sources, and a second region corresponding to the second light sources disposed between the second rib and the third rib. The difference between the first magnitude current and the second magnitude current may be determined based on the difference between the brightness of the light emitted from the first region and the brightness of the light emitted from the second region.

[0236] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate and configured to emit light toward the one periphery surface of the light guide plate, and a control board configured to supply a driving current to the plurality of light sources. The plurality of light sources may include a first light source group comprising a first number of first light sources arranged at a first interval from each other, and a second light source group comprising a second number of second light sources arranged at the first interval from each other and greater than the first number, and spaced apart from the first light source group at a second interval greater than the first interval. The control board may be configured to supply a current of a first size to at least some of the first light sources included in the first light source group, and to supply a current of a second size smaller than the first size to at least some of the second light sources included in the second light source group.

[0237] The display device may further include a light source board on which the plurality of light sources are arranged, and a plurality of ribs disposed between the light guide plate and the light source board to maintain a separation distance between the light guide plate and the plurality of light sources. The first light source group may be disposed between a first rib and a second rib adjacent to each other among the plurality of ribs. The second light source group may be disposed between the second rib and a third rib adjacent to the second rib among the plurality of ribs.

[0238] The display device may further include a first light source board on which the first light sources included in the first light source group are mounted, and a second light source board on which the second light sources included in the second light source group are mounted. The first light source board and the second light source board may be spaced apart from each other.

[0239] The plurality of light sources may form a plurality of dimming blocks comprising a predetermined number of light sources. Among the plurality of dimming blocks, a first dimming block may include a portion of the first light sources adjacent to the second light source group among the first light sources. Among the plurality of dimming blocks, a second dimming block may include a portion of the second light sources adjacent to the first light source group among the second light sources. The control board may be configured to supply a current of the first magnitude to each of the light sources included in the first dimming block and to supply a current of the second magnitude to each of the light sources included in the second dimming block.

[0240] A display device according to one embodiment of the present disclosure may include a display panel, a light guide plate disposed at the rear of the display panel, a plurality of light sources disposed adjacent to one periphery surface of the light guide plate and configured to emit light toward the one periphery surface of the light guide plate, a first light source board on which a first number of light sources among the plurality of light sources is mounted, a second light source board adjacent to the first light source board and on which a second number of light sources among the plurality of light sources, which is greater than the first number, is mounted, and a control board connected to the first light source board and the second light source board and configured to supply driving current to the plurality of light sources. The control board may be configured to supply a current of a first magnitude to at least some of the light sources mounted on the first light source board and to supply a current of a second magnitude to at least some of the light sources mounted on the second light source board.

[0241] According to the concept of the present disclosure, even if an area where the amount of light is relatively limited occurs due to the structure of the backlight unit, a display device can reduce and / or prevent the visibility of dark areas on the screen by supplying a current smaller than the current supplied to light sources corresponding to the area to light sources corresponding to the nearby area.

[0242] According to the concept of the present disclosure, the uniformity of brightness on the screen can be improved by reducing and / or preventing dark areas from being signed on the screen.

[0243] The effects according to the concept of the present disclosure are not limited to the effects mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs.

[0244] The foregoing embodiments are merely specific examples to explain the technical content according to the embodiments of the present disclosure and to aid in understanding the embodiments of the present disclosure, and are not intended to limit the scope of the embodiments of the present disclosure. Accordingly, the scope of the various embodiments of the present disclosure should be interpreted to include all modifications or variations derived based on the technical concept of the various embodiments of the present disclosure, in addition to the embodiments disclosed herein.

Claims

1. Display panel; A light guide plate positioned at the rear of the above-mentioned display panel; Light source board; A plurality of light sources disposed adjacent to one periphery surface of the light guide plate on the light source board and configured to emit light toward the one periphery surface of the light guide plate; A plurality of ribs disposed between the light guide plate and the light source board and disposed between the light sources among the plurality of light sources; and A control board connected to the light source board and configured to supply driving current to the plurality of light sources; is included. The above plurality of light sources includes a first number of first light sources and a second number of second light sources greater than the first number, and The first light sources are positioned between the first rib and the second rib adjacent to the first rib among the plurality of ribs, and The second light sources are positioned between the second rib and the third rib adjacent to the second rib among the plurality of ribs, and The above control board is, A first current of a first magnitude is supplied to at least some of the first light sources, and A display device configured to supply a second current of a second size smaller than the first size to at least some of the second light sources.

2. In Paragraph 1, The control board above is a display device further configured to supply the first current to the light source closest to the second rib among the first light sources.

3. In Paragraph 1, The control board above is a display device further configured to supply the second current to the light source closest to the second rib among the second light sources.

4. In Paragraph 1, Each dimming block further includes a plurality of dimming blocks comprising a predetermined number of light sources among the plurality of light sources, and The total light source included in one or more of the plurality of dimming blocks is the first light source, and A display device further configured such that the control board above supplies the first current to each of the light sources included in the one or more dimming blocks.

5. In Paragraph 1, Each dimming block further includes a plurality of dimming blocks comprising a predetermined number of light sources among the plurality of light sources, and Among the plurality of dimming blocks above, the first dimming block includes the light source closest to the second rib among the first light sources, and The above control board is further configured to supply the first current to each of the light sources included in the first dimming block.

6. In Paragraph 5, The first dimming block above is a display device that further includes one or more light sources adjacent to the second rib among the second light sources.

7. In Paragraph 1, Each dimming block further includes a plurality of dimming blocks comprising a predetermined number of light sources among the plurality of light sources, and The total light source included in one or more of the plurality of dimming blocks is the second light source, and A display device further configured such that the control board above supplies the second current to each of the light sources included in the one or more dimming blocks.

8. In Paragraph 1, Each dimming block further includes a plurality of dimming blocks comprising a predetermined number of light sources among the plurality of light sources, and Among the plurality of dimming blocks above, the first dimming block includes the light source closest to the second rib among the second light sources, and The above control board is further configured to supply the second current to each of the light sources included in the first dimming block.

9. In Paragraph 8, The above-mentioned first dimming block is a display device that further includes one or more light sources adjacent to the second rib among the first light sources.

10. In Paragraph 1, The above first light sources are arranged spaced apart from each other at a first interval, and The above second light sources are arranged spaced apart from each other by the above first interval, and A display device in which one light source among the first light sources closest to the second rib and one light source among the second light sources closest to the second rib are spaced apart from each other by a second interval larger than the first interval.

11. In Paragraph 1, The plurality of light sources further include a third number of third light sources that are larger than the first number and smaller than the second number, and The above third light sources are positioned between the third rib and the fourth rib adjacent to the third rib, and The above control board is, A display device further configured to supply the second current to at least some of the third light sources.

12. In Paragraph 1, The above plurality of light sources further include a third number of third light sources greater than the second number, and The above third light sources are positioned between the third rib and the fourth rib adjacent to the third rib, and The above control board is, A display device further configured to supply a third current of a third size smaller than the second size to at least some of the third light sources.

13. In Paragraph 1, The first current is the maximum current supplied to at least some of the first light sources, and A display device in which the second current is the maximum current supplied to at least some of the second light sources.

14. In Paragraph 1, The second rib is positioned between the first rib and the third rib, and The first rib, the second rib, and the third rib are sequentially arranged along one direction in which the plurality of light sources are arranged in a display device.

15. In Paragraph 1, The display panel includes a first region corresponding to the first light sources and a second region corresponding to the second light sources, and A display device in which the difference between the first magnitude of the first current and the second magnitude of the second current is based on the difference between the brightness of light emitted from the first region and the brightness of light emitted from the second region.

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