Display apparatus

Abstract

A display apparatus according to one embodiment of the present disclosure may comprise: a main body; a display panel disposed on the main body; and a light source apparatus for providing light to the display panel. The light source apparatus can include: a light source module for generating light; a reflective sheet for reflecting the light; and a diffusion plate for diffusing the light. The light source module can include: a substrate; a plurality of light sources disposed on the substrate; and a plurality of reflective pattern elements disposed to be adjacent to the plurality of light sources. The reflective sheet can include a plurality of holes facing respective light sources or reflective pattern elements.

Description

Display device

[0001] The various embodiments disclosed in this document relate to display devices.

[0002] A display device is an output device that converts electrical information into visual information and displays it to a user. Display devices may include not only televisions and monitors, but also portable devices such as notebook PCs, smartphones, and tablet PCs.

[0003] The display device may include a self-emissive display panel such as an organic light-emitting diode (OLED) or a light-receiving display panel such as a liquid crystal display (LCD).

[0004] A display device including a light-receiving display panel may include a backlight unit (or light source device) that provides light to the display panel. The backlight unit may include an edge-type light source positioned on at least one side of the display panel and a direct-type light source positioned at the rear of the display panel.

[0005] A display device may include a light source module to convert electrical information into visual information. The light source module may include a plurality of light sources for emitting light independently.

[0006] Each of the plurality of light sources may include, for example, a light-emitting diode (LED) or an organic light-emitting diode (OLED). For example, the light-emitting diode or organic light-emitting diode may be mounted on a circuit board or substrate.

[0007] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure.

[0008] According to one embodiment of the present disclosure, a display device may include a main body, a display panel disposed on the main body, and a light source device configured to provide light to the display panel. The light source device may include a light source module that generates light, a reflective sheet that reflects light, and a diffuser plate that diffuses light. The light source module may include a substrate, a plurality of light sources disposed on the substrate, and a plurality of reflective pattern elements disposed adjacent to the plurality of light sources. The reflective sheet may include a plurality of holes facing each light source or reflective pattern element.

[0009] According to one embodiment of the present disclosure, a light source device may include a light source module that generates light, a reflective sheet that reflects light, and a diffuser plate that diffuses light. The light source module may include a substrate, a plurality of light sources disposed on the substrate, and a plurality of reflective pattern elements disposed adjacent to the plurality of light sources. The reflective sheet may include a plurality of holes facing each light source or reflective pattern element.

[0010] However, the problems to be solved in this disclosure are not limited to those mentioned above, and may be determined in various ways without departing from the spirit and scope of this disclosure.

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

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

[0013] FIG. 3 is an exploded perspective view of a light source device according to one embodiment of the present disclosure.

[0014] FIG. 4 is a cross-sectional view of a light source device according to one embodiment of the present disclosure.

[0015] FIG. 5a is a plan view of a light source module according to one embodiment of the present disclosure.

[0016] FIG. 5b is a plan view of a light source module having a reflective sheet laminated thereon according to one embodiment of the present disclosure.

[0017] FIG. 6 is a plan view of a light source module according to one embodiment of the present disclosure.

[0018] FIG. 7a is a plan view of a light source module according to one embodiment of the present disclosure.

[0019] FIG. 7b is a plan view of a light source module having a reflective sheet laminated thereon according to one embodiment of the present disclosure.

[0020] FIG. 8a is a plan view of a light source module according to one embodiment of the present disclosure.

[0021] FIG. 8b is a plan view of a light source module having a reflective sheet laminated thereon according to one embodiment of the present disclosure.

[0022] FIG. 9 is a cross-sectional view of a light source device according to one embodiment of the present disclosure.

[0023] FIG. 10 is a plan view of a light source module according to one embodiment of the present disclosure.

[0024] In the following description, the attached drawings are referenced, and specific examples of implementation are illustrated within the drawings. Additionally, other examples may be used and structural modifications may be made without departing from the scope of the various examples.

[0025] The electronic device according to the embodiments disclosed in this document may be of various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the devices described above.

[0026] The embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise.

[0027] In this document, each of the phrases such as “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B or C,” “at least one of A, B and C,” and “at least one of A, B, or C” may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as “first,” “second,” or “first” or “second” may be used simply to distinguish a component from another component and do not limit the components in any other aspect (e.g., importance or order). Where any (e.g., first) component is referred to as “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicationly,” it means that said component may be connected to said other component directly (e.g., wired), wirelessly, or through a third component.

[0028] The term “module” as used in the various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0029] According to one embodiment, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to one embodiment, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the components of the multiple components in the same or similar manner as those performed by the corresponding components among the multiple components prior to integration. According to one embodiment, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0030] FIG. 1 is a perspective view of a display device according to one embodiment of the present disclosure.

[0031] FIG. 2 is an exploded perspective view of a display device according to one embodiment of the present disclosure.

[0032] According to one embodiment, the display device (1) is a device capable of processing a video signal received from the outside and visually displaying the processed video. In the following description, the display device (1) is exemplified as a television (TV), but the present disclosure is not limited thereto. For example, the display device (1) can be implemented in various forms such as a monitor, a portable multimedia device, a portable communication device, a portable computing device, etc., and the form of the display device (1) is not limited as long as it is a device that visually displays video.

[0033] In addition, the display device (1) may be 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; the display device (1) according to one embodiment may be installed in any indoor location where many people can enter and exit, such as a subway station, shopping mall, movie theater, company, or store.

[0034] According to one embodiment, a display device (1) receives content data including video data and audio data from various content sources and can output video and audio corresponding to the video data and audio data. 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 providing server.

[0035] According to one embodiment, the display device (1) may be a flat display device in which the display panel (10) that displays an image is flat, as shown in FIG. 1. Although not shown in the drawing, the display device may be a curved display device in which the display panel is bent, or a bendable display device in which the display panel can be deformed from a flat surface to a curved surface or from a curved surface to a flat surface, or the curvature of the curved surface can be changed.

[0036] Referring to FIGS. 1 and FIGS. 2, a display device (1) according to one embodiment may include a main body (10), a display panel (20), and a light source device (100).

[0037] According to one embodiment, the main body (10) may be provided to accommodate a display panel (20) and / or a light source device (100). The main body (10) may be provided to support the display panel (20) and / or the light source device (100).

[0038] According to one embodiment, the main body (10) may include a front chassis (11), a middle mold (12), a rear chassis (13), and a back cover (14).

[0039] According to one embodiment, the front chassis (11) may include an opening (11a) for exposing a display panel (20).

[0040] According to one embodiment, the middle mold (12) may include a middle mold side (12a) and an intermediate support (12b) that protrudes inward from the middle mold side (12a) to support the display panel (20) and the light source device (100) and maintain a gap.

[0041] According to one embodiment, the rear chassis (13) can support the light source device (100). Various components of the display device (1), such as the front chassis (11) and the middle mold (12), can be fixedly supported on the rear chassis (13).

[0042] According to one embodiment, a substrate of a light source device (100) (e.g., substrate (111) of FIG. 3) may be mounted on the front of the rear chassis (13) (e.g., one side facing the +X axis direction). For example, the rear chassis (13) may serve to dissipate heat generated from a light source (e.g., light source (112) of FIG. 3) to the outside. Heat generated from the light source (112) is transferred to the rear chassis (13) via the substrate (111) and can be dissipated from the rear chassis (13). For example, the rear chassis (13) may be formed from various metal materials such as aluminum or stainless steel, which have good thermal conductivity, or plastic materials such as ABS resin. Additionally, the substrate (111) of the light source device (100) may also be a metal PCB made of aluminum, which has good thermal conductivity.

[0043] According to one embodiment, at least one of the front chassis (11), middle mold (12), and rear chassis (13) may be omitted or formed integrally with each other. The front chassis (11), middle mold (12), and rear chassis (13) may collectively be referred to as a chassis assembly.

[0044] According to one embodiment, the back cover (14) may be positioned to wrap around the chassis assembly to protect and accommodate the chassis assembly. For example, the back cover (14) may be attached at the rear (e.g., in the -X-axis direction) of the rear chassis (13) of the chassis assembly.

[0045] Meanwhile, although not shown in the drawing, the display device (1) may further include a leg (not shown) for supporting the display device (1) on the installation surface.

[0046] According to one embodiment, a display panel (20) may be configured to display visual information such as images and / or videos. The display panel (10) may include an LCD panel. The LCD panel may display images using liquid crystals that exhibit optical properties according to changes in voltage and temperature. The LCD panel may be composed of a thin film transistor (TFT) substrate, 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. The thin film transistor substrate may be a transparent substrate in which thin film transistors, which are switching elements, are formed in a matrix form. The color filter substrate may be a transparent substrate in which RGB color pixels, which are color pixels that express a predetermined color, are formed by a thin film process. However, the present disclosure is not limited thereto, and the display panel (20) may include a light-emitting diode panel (LED Panel) or an organic light-emitting diode panel (OLED Panel).

[0047] According to one embodiment, on one side of the display panel (20), a cable (20a) for transmitting video data to the display panel (20) and a display driver integrated circuit (DDI) (30) for processing digital video data and outputting an analog video signal may be provided.

[0048] According to one embodiment, the cable (20a) electrically connects the control assembly (50) and / or power assembly (60) with the panel driver (30), and can also electrically connect the panel driver (30) with the display panel (20). The cable (20a) may include a flexible flat cable or a film cable, etc.

[0049] According to one embodiment, the panel driver (30) can receive image data and power from the control assembly (50) and / or power assembly (60) through the cable (20a). The panel driver (30) can provide image data and driving current to the display panel (20) through the cable (20a).

[0050] According to one embodiment, the cable (20a) and the panel driver (30) may be implemented as a single unit using a film cable, a chip on film (COF), a tape carrier packet (TCP), etc. For example, the panel driver (30) may be placed on the cable (20a). However, it is not limited thereto, and the panel driver (30) may be placed on the display panel (20).

[0051] According to one embodiment, the display device (1) may include a control assembly (50) that controls the operation of the display panel (20) and a power assembly (60) that supplies power to the light source device (100) and the display panel (20).

[0052] According to one embodiment, the control assembly (50) may include a control circuit that controls the operation of the display panel (20) and the light source device (100). The control circuit may process image data received from an external content source, transmit image data to the display panel (20), and transmit dimming data to the light source device (100).

[0053] According to one embodiment, the power assembly (60) may include a power circuit that supplies power to the display panel (20) and the light source device (100). The power circuit may supply power to the control assembly (50), the light source device (100), and the display panel (20).

[0054] According to one embodiment, the control assembly (50) and the power assembly (60) may be implemented with a printed circuit board and various circuits mounted on the printed circuit board. For example, the control circuit may include a memory, a processor, and a control circuit board on which these are mounted. For example, the power circuit may include a capacitor, a coil, a resistor, a processor, etc., and a power circuit board on which these are mounted.

[0055] According to one embodiment, a light source device (100) may be provided to provide light to a display panel (10). The light source device (100) may be positioned at the rear of the display panel (10) (e.g., in the -X-axis direction). The light source device (100) may irradiate light toward the display panel (10).

[0056] According to one embodiment, the light source device (100) may include a point light source that emits monochromatic light or white light. The light source device (100) may refract, reflect, and scatter light to convert the light emitted from the point light source into uniform surface light.

[0057] Hereinafter, the configuration of the light source device (100) will be explained in detail with reference to FIG. 3.

[0058] FIG. 3 is an exploded perspective view of a light source device according to one embodiment of the present disclosure.

[0059] Referring to FIG. 3, a light source device (100) according to one embodiment may include a light source module (110), a reflection sheet (120), a diffuser plate (130), and an optical sheet (140).

[0060] According to one embodiment, the light source module (110) may include a substrate (111) and a plurality of light sources (112) that emit light.

[0061] According to one embodiment, a plurality of light sources (22) may be mounted on the substrate (111). A circuit pattern (e.g., the circuit pattern element (113) of FIG. 4) for transmitting driving power and signals to the light sources (22) may be printed on the substrate (21).

[0062] According to one embodiment, a plurality of light sources (112) may be arranged on a substrate (111) in a predetermined pattern so that light is emitted with uniform brightness. A plurality of light sources (111) may be arranged on the substrate (111) such that the distance between one light source and adjacent light sources is equal. Alternatively, a plurality of light sources (111) may be arranged on the substrate (111) such that the distance between one light source and adjacent light sources is different.

[0063] According to one embodiment, a plurality of light sources (112) may include LEDs (Light Emitting Diodes). The LEDs may be provided in the form of a package in which an LED chip is mounted on a substrate and filled with resin. Meanwhile, a cold cathode fluorescent lamp (CCFL) or an external electrode fluorescent lamp (EEFL) may be used as a light source.

[0064] According to one embodiment, the reflective sheet (120) may be placed in front of the light source module (110) (e.g., in the +X-axis direction). For example, the reflective sheet (120) may be placed on the substrate (111) of the light source module (110). The reflective sheet (120) may reflect light emitted from a plurality of light sources (111) forward or in a direction close to the forward.

[0065] According to one embodiment, a plurality of through holes (121) may be formed in the reflective sheet (120) at positions corresponding to each of the plurality of light sources (111) of the light source module (110). The plurality of through holes (121) may be provided at equal intervals. However, this is not limited thereto, and the plurality of through holes (121) may be arranged such that the distance between one through hole (121) and the adjacent through holes (121) is different. Additionally, the light source (112) of the light source module (110) may pass through the through holes (121) and protrude forward from the reflective sheet (120). Accordingly, the plurality of light sources (112) can emit light from the front of the reflective sheet (120). The reflective sheet (120) can reflect the light emitted from the plurality of light sources (112) toward the reflective sheet (120) toward the diffuser plate (130).

[0066] According to one embodiment, a diffuser plate (130) may be positioned in front of a light source module (110) and a reflective sheet (120). The diffuser plate (130) can evenly disperse light emitted from a light source (111) of a light source module (110).

[0067] Multiple light sources (112) are located at various points on the rear of the light source device (100). Although multiple light sources (111) may be arranged at equal intervals on the rear of the light source device (100), non-uniformity of brightness may occur depending on the position of the multiple light sources (111).

[0068] According to one embodiment, the diffuser plate (130) can diffuse light emitted from a plurality of light sources (112) within the diffuser plate (130) to eliminate non-uniformity of brightness caused by a plurality of light sources (112). In other words, the diffuser plate (130) can uniformly emit non-uniform light from a plurality of light sources (111) to the front.

[0069] According to one embodiment, an optical sheet (140) may be positioned in front of a diffuser plate (130). The optical sheet (140) may include various sheets to improve brightness and also improve the uniformity of brightness. For example, the optical sheet (140) may include a light conversion sheet (141), a diffuser sheet (142), a prism sheet (143), and a reflective polarizing sheet (144).

[0070] FIG. 4 is a cross-sectional view of a light source device according to one embodiment of the present disclosure.

[0071] FIG. 5a is a plan view of a light source module according to one embodiment of the present disclosure.

[0072] FIG. 5b is a plan view of a light source module having a reflective sheet laminated thereon according to one embodiment of the present disclosure.

[0073] Referring to FIGS. 4, 5a, and 5b, a light source device (100) according to one embodiment may include a light source module (110), a reflective sheet (120), a diffuser plate (130), and an optical sheet (140). The light source module (110), the reflective sheet (120), the diffuser plate (130), and the optical sheet (140) may be arranged (or stacked) sequentially from the rear (e.g., -X-axis direction) to the front (e.g., +X-axis direction).

[0074] According to one embodiment, the light source module (110) may include a substrate (111), a plurality of light sources (112), a plurality of circuit pattern elements (113) and a plurality of reflection pattern elements (114).

[0075] According to one embodiment, a plurality of light sources (112) may be arranged on a substrate (111) at equal intervals. For example, a plurality of light sources (112) may be arranged on the substrate (111) to form a grid pattern.

[0076] According to one embodiment, a circuit pattern element (113) may be provided to transmit an electrical signal or supply power to a plurality of light sources (112) disposed on a substrate (111). At least some of the plurality of circuit pattern elements (113) may be provided to be exposed on a portion of the substrate (112) where the plurality of light sources (112) are not provided.

[0077] According to one embodiment, a reflection pattern element (114) may be disposed in a region of a substrate (111) where a light source (112) is not provided. A plurality of reflection pattern elements (114) may be disposed on the substrate (111) at equal intervals. For example, a plurality of reflection pattern elements (114) may have a grid pattern disposed staggered with respect to a plurality of light sources (112).

[0078] According to one embodiment, a reflective pattern element (114) may be provided on a circuit pattern element (113). For example, the reflective pattern element (114) may cover the corresponding circuit pattern element (113) through a soldering process.

[0079] According to one embodiment, the reflection pattern element (114) may be composed of a metallic material with high reflectivity. For example, the reflection pattern element (114) may include a metallic material such as lead (Pb), copper (Cu), or silver (Au). The reflection pattern element (114) may be composed of a material substantially identical to the material constituting the circuit pattern element (113). The reflection angle and reflectivity of light (L) may vary depending on the height of the reflection pattern element (114) and the composition of the constituent material.

[0080] According to one embodiment, the reflection pattern element (114) may include a plurality of segments (1141). The segments (1141) of the reflection pattern element (114) may have various shapes such as dots, lines, or crosses. For example, the reflection pattern element (114) may have a dot pattern formed by a plurality of segments (1141) of dot shape.

[0081] According to one embodiment, a plurality of reflection pattern elements (114) may include a plurality of first reflection pattern elements (114a) and a plurality of second reflection pattern elements (114b). The first reflection pattern elements (114a) may be located inside a plurality of light sources (112). For example, the plurality of first reflection pattern elements (114a) may be surrounded by the plurality of light sources (112). The second reflection pattern elements (114b) may be located outside a plurality of light sources (112). For example, the second reflection pattern elements (114b) may be located adjacent to the edges (111a, 111b) of the substrate (111). The first reflection pattern elements (114a) may have a circular dot pattern. The second reflection pattern elements (114b) may have a rectangular dot pattern with rounded corners. The number of segments (1141) included in the first reflection pattern element (114a) can be designed to be greater than the number of segments (1141) included in the second reflection pattern element (114b).

[0082] According to one embodiment, a reflective sheet (120) may be placed on one side of a light source module (110) (e.g., one side facing the +X axis direction). The reflective sheet (120) may cover the remaining area of ​​the substrate (111) excluding the area where a plurality of light sources (112) and a plurality of reflective pattern elements (114) of the light source module (110) are placed.

[0083] According to one embodiment, the reflective sheet (120) may include a plurality of holes (121, 122). The plurality of holes (121, 122) of the reflective sheet (120) may include a plurality of through holes (121) and a plurality of pattern holes (122). The plurality of holes (121, 122) of the reflective sheet (120) may be formed through a punching process. The punching process may be performed simultaneously on a plurality of stacked reflective sheets (120). For example, the plurality of holes (121, 122) of the reflective sheet (120) may be formed on each reflective sheet (120) by performing a single punching process on the plurality of stacked reflective sheets (120). In this case, productivity (or production efficiency) may be improved compared to the conventional process of printing fluorescent paint or dot patterns on each reflective sheet to ensure brightness and uniformity.

[0084] According to one embodiment, a plurality of through holes (121) may be provided at positions corresponding to a plurality of light sources (112). The plurality of through holes (121) may be arranged at equal intervals. For example, the plurality of through holes (121) may have a grid pattern. The plurality of through holes (121) may be designed to be larger than the diameter of the light source (112). The light source (112) may be exposed to the outside of the substrate (111) and / or the reflective sheet (120) by the corresponding through holes (121).

[0085] According to one embodiment, a plurality of pattern holes (122) may be provided at positions corresponding to a plurality of reflection pattern elements (114). The plurality of pattern holes (122) may be arranged at equal intervals. For example, a plurality of pattern holes (122a or 122b) may be spaced apart from each other along the edges (11a or 11b) of adjacent substrates (11). The plurality of pattern holes (122) may have shapes substantially corresponding to a plurality of reflection patterns (114). The reflection pattern elements (114) may be exposed to the outside of the reflection sheet (120) by the corresponding pattern holes (122).

[0086] According to one embodiment, a plurality of pattern holes (122) may include a plurality of first pattern holes (122a) and a plurality of second pattern holes (122b). A first pattern hole (122a) may be provided at a position corresponding to a first reflection pattern (144a). A plurality of first pattern holes (122a) may be located inside a plurality of through holes (121). For example, a plurality of first pattern holes (122a) may be surrounded by a plurality of through holes (121). A second pattern hole (122b) may be provided at a position corresponding to a second reflection pattern (144b). A plurality of second pattern holes (122b) may be located outside a plurality of through holes (121). For example, a plurality of second pattern holes (122b) may be located adjacent to the edges (120a, 120b) of a reflection sheet (120).

[0087] When multiple light sources (112) are provided as LEDs, unlike OLEDs, the light sources and the pixels of the display panel (20) do not correspond (or match) one-to-one. In this case, a small number of light sources cover the entire area of ​​the display panel (20), so a difference (or non-uniformity) in brightness (or light intensity) occurs in different areas (e.g., edges) of the display panel (20).

[0088] A plurality of reflection pattern elements (114) can function substantially the same as a plurality of light sources (112). For example, at least a portion of the light reflected from a plurality of light sources (112) to a reflection sheet (120) by a diffuser plate (130) can be reflected back to the diffuser plate (130) through the reflection pattern elements (114). In this case, light can be irradiated by the reflection pattern elements (114) to a portion of the display panel (20) that is not facing the light source (112). Consequently, light is irradiated over the entire surface area of ​​the display panel (20), thereby reducing the difference (or non-uniformity) in brightness (or light quantity) by zone.

[0089] FIG. 6 is a plan view of a light source module according to one embodiment of the present disclosure.

[0090] The embodiment of FIG. 6 can be optionally combined with the embodiments of FIG. 1 to 5a, FIG. 5b, FIG. 7a, FIG. 7b, FIG. 8a, and FIG. 8b to 10.

[0091] The configuration of the light source module (110-1) of FIG. 6 may be all or partly the same as the configuration of the light source module (110) of FIG. 3 to 5a and FIG. 5b.

[0092] Referring to FIG. 6, a light source module (110-1) according to one embodiment may include a substrate (111), a plurality of light sources (112), a plurality of circuit pattern elements (e.g., a plurality of circuit pattern elements (113) of FIG. 4) and a plurality of reflection pattern elements (114-1).

[0093] According to one embodiment, a reflection pattern element (114-1) may be disposed in a region of a substrate (111) where a light source (112) is not provided. A plurality of reflection pattern elements (114-1) may be disposed on the substrate (111) at equal intervals. For example, a plurality of reflection pattern elements (114-1) may have a grid pattern that is staggered with respect to a plurality of light sources (112).

[0094] According to one embodiment, the reflection pattern element (114-1) may include at least one segment (1142). The segment (1142) may have a line shape.

[0095] According to one embodiment, a plurality of reflection pattern elements (114-1) may include a plurality of first reflection pattern elements (114-1a) and a plurality of second reflection pattern elements (114-1b). The first reflection pattern elements (114-1a) may be located inside a plurality of light sources (112). For example, the plurality of first reflection pattern elements (114-1a) may be surrounded by the plurality of light sources (112). The second reflection pattern elements (114-1b) may be located outside a plurality of light sources (112). For example, the second reflection pattern elements (114-1a) may be located adjacent to the edges (111a, 111b) of the substrate (111).

[0096] According to one embodiment, the first reflection pattern element (114-1a) may include two or more segments (1142-1) that are bent at least twice. For example, the first reflection pattern element (114-1a) may include two segments (1142-1a, 1142-1b) arranged symmetrically with respect to each other. Each of the segments (1142-1a, 1142-1b) of the first reflection pattern element (114-1a) may have both ends bent in the same direction. In this case, the first reflection pattern element (114-1a) may have an X-shape formed by the segments (1142-1a, 1142-1b).

[0097] According to one embodiment, the second reflection pattern element (114-1b) may include one or more segments (1142-1) that are bent at least once. For example, the second reflection pattern element (114-1b) may include two segments (1142-2a, 1142-2b) in which opposite ends are each bent in the same direction.

[0098] FIG. 7a is a plan view of a light source module according to one embodiment of the present disclosure.

[0099] FIG. 7b is a plan view of a light source module having a reflective sheet laminated thereon according to one embodiment of the present disclosure.

[0100] The embodiments of FIGS. 7a and 7b can be optionally combined with the embodiments of FIGS. 1 to 5a, FIG. 5b, FIG. 6, FIG. 8a, and FIGS. 8b to 10.

[0101] The configuration of the light source module (110-2) in FIGS. 7a and 7b may be all or partly the same as the configuration of the light source module (110, 110-1) in FIGS. 3 to 5a, FIG. 5b, and FIG. 6. The configuration of the reflective sheet (120-1) in FIGS. 7a and 7b may be all or partly the same as the configuration of the reflective sheet (120) in FIGS. 3 to 5a, FIG. 5b, and FIG. 6.

[0102] Referring to FIGS. 7a and 7b, a light source module (110-2) according to one embodiment may include a substrate (111), a plurality of light sources (112), a plurality of circuit pattern elements (e.g., a plurality of circuit pattern elements (113) of FIG. 4) and a plurality of reflection pattern elements (114-2).

[0103] According to one embodiment, a reflection pattern element (114-2) may be disposed in a region of a substrate (111) where a light source (112) is not provided. A plurality of reflection pattern elements (114-2) may be disposed on the substrate (111) at equal intervals. For example, at least some of the plurality of reflection pattern elements (114-2) may be disposed spaced apart from each other along the edges (111a, 111b) of the substrate (110). For example, at least some of the plurality of reflection pattern elements (114-2) may be disposed spaced apart from each other along a plurality of light sources (112) adjacent to the edges (111a, 111b) of the substrate (110).

[0104] According to one embodiment, a plurality of reflection pattern elements (114-2) may include a plurality of first reflection pattern elements (114-2a) and a plurality of second reflection pattern elements (114-2b, 114-2c).

[0105] According to one embodiment, the first reflection pattern element (114-2a) may be arranged to surround at least a portion of the light source (112) positioned on the outer edge among the plurality of light sources (112). For example, the first reflection pattern element (114-2a) may be divided and arranged such that the plurality of segments (1141) constituting the first reflection pattern element (114-2a) are spaced apart at a predetermined interval in the periphery direction of the light source (112) positioned on the outer edge.

[0106] According to one embodiment, the second reflection pattern elements (114-2b, 114-2c) may be located outside the plurality of light sources (112). The plurality of second reflection pattern elements (114-2b, 114-2c) may be spaced apart from each other along the edges (111a, 111b) of the substrate (110). For example, the plurality of second reflection pattern elements (114-2b, 114-2c) may include a plurality of second-first reflection pattern elements (114-2b) spaced apart from each other along the edges (111a, 111b) of the substrate (111) and a plurality of second-second reflection pattern elements (114-2c) placed at the corners (111c) of the substrate (111). The second-first reflection pattern elements (114-2b) may have a rectangular dot pattern with rounded corners. The second-2 reflection pattern element (114-2c) may have a dot pattern in the shape of an L or an arrow.

[0107] According to one embodiment, the reflective sheet (120-1) may include a plurality of holes (121, 122-1). The plurality of holes (121, 122-1) of the reflective sheet (120-1) may include a plurality of through holes (121) and a plurality of pattern holes (122-1).

[0108] According to one embodiment, a plurality of pattern holes (122-1) may include a plurality of first pattern holes (122-1a) and a plurality of second pattern holes (122-1b, 122-1c). The first pattern hole (122-1a) may be provided at a position corresponding to the first reflection pattern (144-2a). The first pattern hole (122-1a) may be provided to be larger than the diameter of the light source (112). The light source (112) and / or the first reflection pattern element (122-1a) may be exposed to the outside of the reflection sheet (120-1) by being located inside the first pattern hole (122-1a). The second pattern holes (122-1b, 122-1c) may be provided at a position corresponding to the second reflection pattern (144b). A plurality of second pattern holes (122-1b, 122-1c) may be located outside the plurality of first pattern holes (122-1a). For example, a plurality of second pattern holes (122-1b, 122-1c) may be spaced apart from each other along the edges (120a, 120b) of the reflective sheet (120-1).

[0109] FIG. 8a is a plan view of a light source module according to one embodiment of the present disclosure.

[0110] FIG. 8b is a plan view of a light source module having a reflective sheet laminated thereon according to one embodiment of the present disclosure.

[0111] The embodiments of FIGS. 8a and 8b can be optionally combined with the embodiments of FIGS. 1 to 5a, FIG. 5b, FIG. 6, FIG. 7a, FIG. 7b, FIG. 9 and FIG. 10.

[0112] The configuration of the light source module (110-3) in FIGS. 8a and 8b may be all or part identical to the configuration of the light source module (110, 110-1, 110-2) in FIGS. 3 to 5a, FIG. 5b, FIG. 6, FIG. 7a, and FIG. 7b. The configuration of the reflective sheet (120-2) in FIGS. 8a and 8b may be all or part identical to the configuration of the reflective sheet (120, 120-1) in FIGS. 3 to 5a, FIG. 5b, FIG. 6, FIG. 7a, and FIG. 7b.

[0113] Referring to FIGS. 8a and 8b, a light source module (110-3) according to one embodiment may include a substrate (111), a plurality of light sources (112), a plurality of circuit pattern elements (e.g., a plurality of circuit pattern elements (113) of FIG. 4) and a plurality of reflection pattern elements (114-3).

[0114] According to one embodiment, a plurality of reflection pattern elements (114-3) may be disposed in a region of a substrate (111) where a light source (112) is not provided. A plurality of reflection pattern elements (114-3) may be disposed on the substrate (111) to correspond to a non-uniform region (or, a mura region) of the display panel (20).

[0115] According to one embodiment, a plurality of reflection pattern elements (114-3) can be automatically placed in non-uniform areas of a corresponding display panel (20) on a substrate (111) through computer simulation. The non-uniform areas of the display panel (20) can be detected through computer simulation. Computer simulation for detecting non-uniform areas of the display panel (20) may include image processing-based simulation, machine learning / deep learning-based simulation, physics-based simulation, or statistical analysis simulation. For example, computer simulation for detecting non-uniform areas of the display panel (20) may use the type, size, shape, brightness, or color of a light source and the spacing of the light source as input data. For example, the computer simulation may automatically determine the characteristics (e.g., location, shape) of the reflection pattern elements by detecting areas where light is insufficient or excessive through the tracking of the path of light within the display panel (20) using a ray tracing technique. Consequently, the number, location, or shape of the segments (1141) of each reflection pattern element (114-3a, 114-3b, 114-3c) can be designed by taking into account the size, location, or shape of the non-uniform area of ​​the display panel (20).

[0116] According to one embodiment, the reflective sheet (120-2) may include a plurality of holes (121, 122-2). The plurality of holes (121, 122-2) of the reflective sheet (120-1) may include a plurality of through holes (121) and a plurality of pattern holes (122-2). The plurality of pattern holes (122-2a, 122-2b, 122-2c) have substantially corresponding shapes to the corresponding plurality of reflective pattern elements (114-3a, 114-3b, 114-3c) and may be provided at substantially corresponding positions.

[0117] FIG. 9 is a cross-sectional view of a light source device according to one embodiment of the present disclosure.

[0118] FIG. 10 is a plan view of a light source module according to one embodiment of the present disclosure.

[0119] The embodiments of FIGS. 9 and 10 can be optionally combined with the embodiments of FIGS. 1 to 5a, FIG. 5b, FIG. 6, FIG. 7a and FIG. 7b, FIG. 8a, FIG. 8b and FIG. 9.

[0120] The configuration of the light source device (100') of FIG. 9 may be all or part identical to the configuration of the light source device (100) of FIG. 2 to 4. The configuration of the light source module (110-4) of FIG. 9 and 10 may be all or part identical to the configuration of the light source module (110, 110-1, 110-2, 110-3) of FIG. 3 to 5a, FIG. 5b, FIG. 6, FIG. 7a and 7b, FIG. 8a, FIG. 8b, and FIG. 9. The configuration of the reflective sheet (120-3) of FIG. 9 and 10 may be all or part identical to the configuration of the reflective sheet (120, 120-1, 120-2) of FIG. 3 to 5a, FIG. 5b, FIG. 6, FIG. 7a and 7b, FIG. 8a, FIG. 8b, and FIG. 9.

[0121] Referring to FIGS. 9 and 10, a light source device (100') according to one embodiment may include a light source module (110-4), a reflective sheet (120-3), a diffuser plate (130), and an optical sheet (140). The light source module (110-4), the reflective sheet (120-3), the diffuser plate (130), and the optical sheet (140) may be arranged (or stacked) sequentially from the rear (e.g., -X-axis direction) to the front (e.g., +X-axis direction).

[0122] According to one embodiment, the light source module (110-4) may include a substrate (111), a plurality of light sources (112), a plurality of circuit pattern elements (113'), and a plurality of reflection pattern elements (114-4).

[0123] According to one embodiment, a plurality of reflection pattern elements (114-4) may be arranged on a substrate (111) at equal intervals. The reflection pattern elements (114-4) may be arranged to surround a light source (112).

[0124] According to one embodiment, the reflection pattern element (114-4) extends for a predetermined length along the circumferential direction of the light source (112) and may include a plurality of segments (1144) spaced apart from each other along the circumferential direction of the light source (112). The segments (1144) of the reflection pattern element (114-4) may have a curved line shape.

[0125] According to one embodiment, the reflection pattern element (114-4) may include a plurality of segment groups (1144-1, 1144-2) spaced radially outward from the light source (112). For example, the reflection pattern element (114-4) may include two groups of segment groups (1144-1, 1144-2). For example, as illustrated in FIG. 10, the reflection pattern element (114-4) may include a first segment group (1144-1) composed of a plurality of segments (1144-1a, 1144-1b, 1144-1c, 1144-1d) adjacent to the light source (112), and a second segment group (1144-2) composed of a plurality of segments (1144-2a, 1144-2b, 1144-2c, 1144-2d) spaced apart from the first segment group (1144-1) in the radial direction of the light source (112). The first segment group (1144-1) and the second segment group (1144-2) may have a wave shape.

[0126] According to one embodiment, the reflective sheet (120-3) may include a plurality of holes (123). The plurality of holes (123) of the reflective sheet (120) may be named through holes or pattern holes.

[0127] According to one embodiment, a plurality of holes (123) in a reflective sheet (120-3) may be provided at positions corresponding to a plurality of light sources (112) and / or a plurality of reflective pattern elements (114). A plurality of pattern holes (122) may be arranged at equal intervals. The light sources (112) and / or reflective pattern elements (114) may be exposed to the outside of the reflective sheet (120) by the corresponding holes (123).

[0128] A plurality of reflection pattern elements (114-4) can improve the dimming effect of the display panel (20) by concentrating the light reflected from the diffuser plate (130) together with the light source (112) in a direction perpendicular to the light source (112) (e.g., ±X-axis direction). For example, the plurality of reflection pattern elements (114-4) can intensively improve the amount of light in an area (e.g., bright area) adjacent to (or corresponding to) the light source (112) by surrounding the light source (112). In this case, the difference in the amount of light between the dark area (e.g., dark area) and the bright area (e.g., bright area) of the display panel (20) increases, thereby improving the contrast of the display panel (20).

[0129] A display device (1) according to one embodiment of the present disclosure may include a main body (10), a display panel (20) disposed on the main body (10), and a light source device (100, 100') configured to provide light to the display panel (20). The light source device (100, 100') may include a light source module (110, 110-1, 110-2, 110-3, 110-4) that generates light, a reflective sheet (120, 120-1, 120-2, 120-3) that reflects light, and a diffuser plate (130) that diffuses light. The light source module (110, 110-1, 110-2, 110-3, 110-4) may include a substrate (111), a plurality of light sources (112) disposed on the substrate (111), and a plurality of reflection pattern elements (114, 114-1, 114-2, 114-3) disposed adjacent to the plurality of light sources (112). The reflection sheet (120, 120-1, 120-2, 120-3) may include a plurality of holes (121, 122, 123) facing each light source (112) or reflection pattern element (114, 114-1, 114-2, 114-3).

[0130] According to one embodiment, the plurality of light sources (112) and the plurality of reflection pattern elements (114, 114-1, 114-2, 114-3) may be exposed to the outside of the reflection sheet (120, 120-1, 120-2, 120-3) through corresponding plurality of holes (121, 122, 123). Light irradiated from the light source (111) may be reflected by the diffuser plate (130), then incident on the reflection pattern elements (114, 114-1, 114-2, 114-3) and reflected again.

[0131] According to one embodiment, the plurality of reflection pattern elements (114) may include a plurality of first reflection pattern elements (114a) surrounded by the plurality of light sources (111) and a plurality of second reflection pattern elements (114b) adjacent to the edges (111a, 111b) of the substrate (111).

[0132] According to one embodiment, the plurality of reflection patterns (114-2) may include a plurality of first reflection patterns (114-2a) comprising a plurality of segments (1141) spaced apart from each other in the circumferential direction of the plurality of light sources (111), and a plurality of second reflection patterns (114-2b) spaced apart along the edges (111a, 111b) of the substrate (111).

[0133] According to one embodiment, the reflection pattern (114-4) may include a plurality of segments (1144) that are spaced apart from each other and extend along a predetermined section in the circumferential direction of the light source (112).

[0134] According to one embodiment, the reflection pattern element (114, 114-2, 114-3) may include a plurality of dot-shaped segments (1141).

[0135] According to one embodiment, the reflection pattern element (114-1, 114-4) may include a plurality of line-shaped segments (1142, 1144).

[0136] According to one embodiment, the substrate (111) may include a plurality of circuit pattern elements (113) electrically connected to the plurality of light sources (112). At least a portion of the circuit pattern elements (113) may be exposed on the substrate (111). The reflective pattern elements (114, 114-1, 114-2, 114-3, 114-4) may be arranged to cover the circuit pattern elements (113) exposed on the corresponding substrate (111).

[0137] According to one embodiment, the reflection pattern elements (114, 114-1, 114-2, 114-3, 114-4) may be composed of a metallic material including at least one of lead, copper, and silver.

[0138] According to one embodiment, the plurality of holes (121, 122) may include a plurality of through holes (121) provided at positions corresponding to the plurality of light sources (112) and a plurality of pattern holes (122) provided at positions corresponding to the plurality of reflection pattern elements (114, 114-1, 114-2, 114-3).

[0139] A light source device (100) according to one embodiment may include a light source module (110, 110-1, 110-2, 110-3, 110-4) that generates light, a reflective sheet (120, 120-1, 120-2, 120-3) that reflects light, and a diffuser plate (130) that diffuses light. The light source module (110, 110-1, 110-2, 110-3, 110-4) may include a substrate (111), a plurality of light sources (112) disposed on the substrate (111), and a plurality of reflective pattern elements (114, 114-1, 114-2, 114-3) disposed adjacent to the plurality of light sources (112). The above reflective sheet (120, 120-1, 120-2, 120-3) may include a plurality of holes (121, 122, 123) facing each light source (112) or reflective pattern element (114, 114-1, 114-2, 114-3).

[0140] According to one embodiment, the plurality of reflection pattern elements (114) may include a plurality of first reflection pattern elements (114a) surrounded by the plurality of light sources (111) and a plurality of second reflection pattern elements (114b) adjacent to the edges (111a, 111b) of the substrate (111).

[0141] According to one embodiment, the plurality of reflection patterns (114-2) may include a plurality of first reflection patterns (114-2a) comprising a plurality of segments (1141) spaced apart from each other in the circumferential direction of the plurality of light sources (111), and a plurality of second reflection patterns (114-2b) spaced apart along the edges (111a, 111b) of the substrate (111).

[0142] According to one embodiment, the reflection pattern (114-4) may include a plurality of segments (1144) that are spaced apart from each other and extend along a predetermined section in the circumferential direction of the light source (112).

[0143] According to one embodiment, the plurality of holes (121, 122) may include a plurality of through holes (121) provided at positions corresponding to the plurality of light sources (112) and a plurality of pattern holes (122) provided at positions corresponding to the plurality of reflection pattern elements (114, 114-1, 114-2, 114-3).

Claims

1. In a display device (1), Main body (10); A display panel (20) disposed on the main body (10); and It includes a light source device (100, 100') configured to provide light to the display panel (20), and The light source device (100, 100') is, It includes a light source module (110, 110-1, 110-2, 110-3, 110-4) that generates light, a reflective sheet (120, 120-1, 120-2, 120-3) that reflects light, and a diffuser plate (130) that diffuses light, The light source modules (110, 110-1, 110-2, 110-3, 110-4) are, Substrate (111); A plurality of light sources (112) disposed on the substrate (111); and It includes a plurality of reflection pattern elements (114, 114-1, 114-2, 114-3) arranged adjacent to the plurality of light sources (112), and The above-mentioned reflective sheet (120, 120-1, 120-2, 120-3) comprises a plurality of holes (121, 122, 123) facing each light source (112) or reflective pattern element (114, 114-1, 114-2, 114-3), forming a device.

2. In Paragraph 1, The plurality of light sources (112) and the plurality of reflection pattern elements (114, 114-1, 114-2, 114-3) are exposed to the outside of the reflection sheet (120, 120-1, 120-2, 120-3) through corresponding plurality of holes (121, 122, 123), and A device in which light irradiated from the light source (111) is reflected by the diffuser plate (130), then incident on the reflection pattern elements (114, 114-1, 114-2, 114-3) and reflected again.

3. In Paragraph 1 or 2, The above plurality of reflection pattern elements (114) are, A plurality of first reflection pattern elements (114a) surrounded by the plurality of light sources (111); and A device comprising a plurality of second reflection pattern elements (114b) adjacent to the edges (111a, 111b) of the substrate (111).

4. In Paragraph 1 or 2, The above plurality of reflection patterns (114-2) are, A plurality of first reflection patterns (114-2a) comprising a plurality of segments (1141) spaced apart from each other in the circumferential direction of the plurality of light sources (111); and A device comprising a plurality of second reflection patterns (114-2b) spaced apart along the edges (111a, 111b) of the substrate (111).

5. In Paragraph 1 or 2, The above reflection pattern (114-4) is a device comprising a plurality of segments (1144) that are spaced apart from each other and extend along a predetermined section in the circumferential direction of the light source (112).

6. In Paragraph 1 or 2, The above-mentioned reflection pattern elements (114, 114-2, 114-3) comprise a plurality of dot-shaped segments (1141), forming a device.

7. In Paragraph 1 or 2, The above-mentioned reflection pattern element (114-1, 114-4) comprises a plurality of line-shaped segments (1142, 1144), forming a device.

8. In any one of paragraphs 1 through 7, The above substrate (111) is, It includes a plurality of circuit pattern elements (113) electrically connected to the plurality of light sources (112) above, and At least a portion of the above circuit pattern element (113) is exposed on the substrate (111), and The above reflection pattern elements (114, 114-1, 114-2, 114-3, 114-4) are, A device positioned to cover a circuit pattern element (113) exposed on the corresponding substrate (111).

9. In any one of paragraphs 1 through 8, The above-mentioned reflection pattern elements (114, 114-1, 114-2, 114-3, 114-4) are composed of a metallic material comprising at least one of lead, copper, and silver, forming a device.

10. In Paragraph 1 or 2, The above plurality of holes (121, 122) are, A plurality of through holes (121) provided at positions corresponding to the plurality of light sources (112); and A device comprising a plurality of pattern holes (122) provided at positions corresponding to the plurality of reflection pattern elements (114, 114-1, 114-2, 114-3).

11. In a light source device (100), Light source module that generates light (110, 110-1, 110-2, 110-3, 110-4); A reflective sheet that reflects light (120, 120-1, 120-2, 120-3); and It includes a diffuser plate (130) that diffuses light, and The light source modules (110, 110-1, 110-2, 110-3, 110-4) are, Substrate (111); A plurality of light sources (112) disposed on the substrate (111); and It includes a plurality of reflection pattern elements (114, 114-1, 114-2, 114-3) arranged adjacent to the plurality of light sources (112), and The above-mentioned reflective sheet (120, 120-1, 120-2, 120-3) comprises a plurality of holes (121, 122, 123) facing each light source (112) or reflective pattern element (114, 114-1, 114-2, 114-3), forming a device.

12. In Paragraph 11, The above plurality of reflection pattern elements (114) are, A plurality of first reflection pattern elements (114a) surrounded by the plurality of light sources (111); and A device comprising a plurality of second reflection pattern elements (114b) adjacent to the edges (111a, 111b) of the substrate (111).

13. In Paragraph 11, The above plurality of reflection patterns (114-2) are, A plurality of first reflection patterns (114-2a) comprising a plurality of segments (1141) spaced apart from each other in the circumferential direction of the plurality of light sources (111); and A device comprising a plurality of second reflection patterns (114-2b) spaced apart along the edges (111a, 111b) of the substrate (111).

14. In Paragraph 11, The above reflection pattern (114-4) is a device comprising a plurality of segments (1144) that are spaced apart from each other and extend along a predetermined section in the circumferential direction of the light source (112).

15. In Paragraph 11, The above plurality of holes (121, 122) are, A plurality of through holes (121) provided at positions corresponding to the plurality of light sources (112); and A device comprising a plurality of pattern holes (122) provided at positions corresponding to the plurality of reflection pattern elements (114, 114-1, 114-2, 114-3).

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