Display device

Abstract

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

Description

Technical Field

[0001] This disclosure relates to a display device including a reflective sheet. Background Technology

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

[0003] Display devices include monitors connected to personal computers or server computers, portable computer devices, navigation terminal devices, general-purpose television devices, Internet Protocol Television (IPTV) devices, portable terminal devices such as smartphones, tablet PCs, personal digital assistants (PDAs) and cellular phones, various display devices used in industrial environments for playing back images (e.g., advertisements) and movies, and various types of audio / video systems.

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

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

[0006] [Technical Issues]

[0007] A display device with improved assembly convenience is provided.

[0008] In addition, a display device that can have improved brightness is provided.

[0009] In addition, a display device with reduced material costs is provided.

[0010] The technical tasks to be achieved in this document are not limited to those described above, and those skilled in the art will clearly understand other technical tasks not mentioned based on the following description.

[0011] [Technical Solution]

[0012] The display device according to aspects of this disclosure includes: a reflective sheet; a light source substrate, which is on the reflective sheet and includes a first light source substrate and a second light source substrate; and a plurality of light sources, including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate. A first distance between a first light source among the plurality of first light sources and a second light source among the plurality of second light sources is greater than or equal to twice a second distance and less than or equal to four times the second distance. The second distance is the distance between adjacent first light sources among the plurality of first light sources.

[0013] The display device according to aspects of this disclosure includes: a bottom chassis; a reflector disposed in front of the bottom chassis; a first light source substrate disposed in front of the reflector; a second light source substrate disposed in front of the reflector and arranged vertically with respect to the first light source substrate; a plurality of first light sources mounted on the first light source substrate; and a plurality of second light sources mounted on the second light source substrate. The closest first distance among the distances between one of the plurality of first light sources and one of the plurality of second light sources is set to two to four times the second distance between the plurality of first light sources. Attached Figure Description

[0014] Figure 1 A display device according to an embodiment of the present disclosure is shown.

[0015] Figure 2 This is an exploded view of a display device according to an embodiment of the present disclosure.

[0016] Figure 3 This is an enlarged cross-sectional view showing the configuration of a portion of the display module of a display device according to an embodiment of the present disclosure.

[0017] Figure 4 The interior of a display device according to an embodiment of the present disclosure is shown.

[0018] Figure 5 This is an exploded view showing a configuration of a portion of a display device according to an embodiment of the present disclosure.

[0019] Figure 6 This is a front view of a part of a display device according to an embodiment of the present disclosure.

[0020] Figure 7 According to embodiments of this disclosure Figure 6 An enlarged view of part A shown.

[0021] Figure 8 An embodiment according to this disclosure is shown. Figure 7 The third light source substrate is separated from the connector.

[0022] Figure 9The optical profile of one of a plurality of light sources in the light source module of a display device according to an embodiment of the present disclosure is schematically shown.

[0023] Figure 10 According to embodiments of this disclosure Figure 6 An enlarged view of part B shown. Detailed Implementation

[0024] The embodiments described in this disclosure and the configurations shown in the accompanying drawings are merely examples of preferred embodiments of this disclosure, and various modifications may be made to replace the embodiments and drawings in this specification when this disclosure is submitted.

[0025] Similar reference numerals or symbols in the various figures of this disclosure indicate parts or components that perform substantially the same function.

[0026] Unless the relevant context clearly indicates otherwise, the singular form of a noun corresponding to an item may include one item or multiple items.

[0027] In this document, each phrase 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 with the corresponding phrase in these phrases, or all possible combinations thereof.

[0028] The terms “unit,” “module,” and “component” can be implemented as hardware or software. Depending on the embodiment, multiple “units,” “modules,” and “components” can be implemented as a single component, or a single “unit,” “module,” and “component” can include multiple components.

[0029] The terminology used in this specification is for the purpose of describing embodiments and is not intended to limit and / or restrict the disclosure. For example, singular expressions herein may include plural expressions unless the context clearly specifies otherwise. Furthermore, the terms “comprising” and “having” are used herein to indicate the presence of the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0030] It will be understood that although terms including ordinal numbers (e.g., "first," "second," etc.) are used in this specification to describe various components, these components should not be limited by these terms, and these terms are used only to distinguish one component from another. For example, without departing from the scope of this disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. The term "and / or" includes any combination of multiple related items or any one of multiple related items.

[0031] When any (e.g., first) component is referred to as “coupled” or “connected” to another (e.g., second) component, whether or not the terms “functionally” or “communically” are used, it means that any component can be connected to the other component directly (e.g., via wire), wirelessly, or via a third component.

[0032] When any component is referred to as being “connected,” “coupled,” “supported,” or “in contact” with another component, this includes cases where the component is indirectly connected, coupled, supported, or in contact with a third component, as well as cases where the components are directly connected, coupled, supported, or in contact with each other.

[0033] When any component is referred to as being "on" or "above" another component, this includes not only cases where any component is in contact with another component, but also cases where there is another component between the two components.

[0034] The terms "vertical direction," "front-back direction," etc., used in the following description are defined based on the accompanying drawings, and the shape and position of each component are not limited by these terms. For example, the terms "front" and "rear" can both be defined based on the X direction shown in the accompanying drawings. The terms "front" and "rear" can both be defined based on the Z direction shown in the accompanying drawings. The terms "left" and "right" can both be defined based on the Y direction shown in the accompanying drawings. The term "vertical direction" can refer to the Z direction shown in the accompanying drawings, and the term "horizontal direction" can refer to the Y direction shown in the accompanying drawings.

[0035] In the following, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

[0036] Figure 1 A display device according to an embodiment of the present disclosure is shown.

[0037] refer to Figure 1 According to an embodiment of the present disclosure, the display device 1 is a device capable of processing image signals received from the outside and visually displaying the processed images. Figure 1The example shown is a television (TV), but it is not limited to this. For example, the display device 1 can be implemented in various forms, such as a monitor (as a type of computer output device), a portable multimedia device, a portable communication device, etc., and the form of the display device 1 is not limited as long as the display device is a device that visually displays images.

[0038] Additionally, the display device 1 can be a large display device (LFD) installed outdoors (e.g., on a building roof or at a bus stop). In this document, "outdoor" is not necessarily limited to the outdoors, and the display device 1 according to embodiments of this disclosure can be installed in any indoor location where many people can come and go, such as subway stations, shopping malls, cinemas, companies, and shops.

[0039] Figure 1 The illustration shows an example of a flat display device 1 having a flat screen, but it is not limited thereto, and the display device according to this disclosure can be applied to curved display devices or flexible or bendable display devices capable of changing between a flat state and a curved state. Furthermore, the configuration according to this disclosure can be applied to display devices of various shapes, regardless of the screen size or aspect ratio of the display device.

[0040] Display device 1 can receive content, including video and audio signals, from various content sources and output video and audio corresponding to the video and audio signals. For example, display device 1 can receive content data via a broadcast receiving antenna or wired cable, receive content data from a content playback device, or receive content data from a content provider's content delivery server.

[0041] Display device 1 can display images corresponding to video data and output sound corresponding to audio data. For example, display device 1 can recover multiple image frames included in video data and display multiple image frames continuously. In addition, display device 1 can recover audio signals included in audio data and output sound continuously according to the audio signals.

[0042] like Figure 1 As shown, the display device 1 may include a main body 11 and a screen 12 for displaying image I.

[0043] The display device 1 can be mounted upright on an indoor or outdoor floor or furniture, or wall-mounted on or inside a wall. As an example, the display device 1 may include a support leg 19 disposed at the lower part of the main body 11, so that the display device can be mounted upright on an indoor or outdoor floor or furniture.

[0044] The main body 11 can form the external shape of the display device 1. Inside the main body 11, components for performing various functions can be provided, such as the display device 1 for displaying image I.

[0045] Display device 1 can be configured to display image I. For example, screen 12 can be formed in the front surface of body 11, and display device 1 can display image I through screen 12. For example, screen 12 can display a still image or a moving image. In addition, screen 12 can display a two-dimensional flat image or a three-dimensional stereoscopic image by utilizing the parallax between the user's eyes.

[0046] Multiple pixels P can be formed on screen 12. Light emitted from each of the multiple pixels P can form an image displayed on screen 12. For example, an image I on screen 12 can be formed by combining the light emitted from the multiple pixels P in a mosaic-like manner.

[0047] Multiple pixels P can each emit light of various brightness and color. For example, each of the multiple pixels P may include subpixels PR, PG, and PB, and subpixels PR, PG, and PB may include a red subpixel PR that can emit red light, a green subpixel PG that can emit green light, and a blue subpixel PB that can emit blue light. For example, red light can represent light with a wavelength of approximately 620 nm (nanometer, one billionth of a meter) to 750 nm, green light can represent light with a wavelength of approximately 495 nm to 570 nm, and blue light can represent light with a wavelength of approximately 450 nm to 495 nm.

[0048] By combining the light emitted from the red sub-pixel PR, the green sub-pixel PG, and the blue sub-pixel PB, multiple pixels P can each emit light of various brightness and color.

[0049] Figure 2 This is an exploded view of a display device according to an embodiment of the present disclosure.

[0050] refer to Figure 2 Various components for generating image I on screen 12 can be disposed inside the main body 11 of the display device 1 according to an embodiment of the present disclosure.

[0051] For example, the display device 1 may include a display panel 20. The display panel 20 may be disposed in the main body 11. The display panel 20 may be configured to display image I. Figure 1 The screen 12 shown can be formed on the front surface of the display panel 20.

[0052] As an example, the display panel 20 may have a generally rectangular shape. For instance, the display panel 20 may have a shape in which the lengths of the horizontal sides and the vertical sides are different from each other. That is, the display panel 20 may be configured to have a long side and a short side. The display panel 20 may be configured as a rectangular plate shape. However, this disclosure is not limited to this, and the display panel 20 may be configured as a square plate shape in which the long side and the short side have nearly the same length.

[0053] The display panel 20 can be set to various sizes. The ratio between the long side and the short side of the display panel 20 is not limited to general cases, such as 16:9 and 4:3, but can be set to any ratio.

[0054] In the display device 1 according to an embodiment of the present disclosure, the display panel 20 may be configured as a light receiving / emitting display type panel, such as a liquid crystal display (LCD).

[0055] A cable 20a for sending image data to the display panel 20 and a display driver integrated circuit (DDI) 30 (hereinafter referred to as "driver IC") for processing digital image data to output analog image signals may be disposed on one side of the display panel 20.

[0056] Cable 20a can be electrically connected between control component 50 / power component 60 and driver IC 30, and can also be electrically connected between driver IC 30 and display panel 20. Cable 20a may include flexible flat cable, membrane cable, etc.

[0057] The driver IC 30 can receive image data and power from the control component 50 / power component 60 via cable 20a, and send image data and drive current to the display panel 20 via cable 20a.

[0058] The cable 20a and the driver IC 30 can be implemented as a single package, such as a film cable, a chip-on-film (COF) package, or a tape-carrier package (TCP). In other words, the driver IC 30 can be disposed on the cable 20a. However, this disclosure is not limited thereto, and the driver IC 30 can also be disposed on the display panel 20.

[0059] A detailed description of the structure of the display panel 20 will be provided later.

[0060] The display device 1 may include a backlight unit 100 configured to illuminate light toward the display panel 20. The backlight unit 100 may be disposed within the main body 11. The backlight unit 100 may be disposed behind the display panel 20 to illuminate light toward the front of the display panel 20. Specifically, the backlight unit 100 may be configured as a surface light source. The display panel 20 may block or transmit light emitted from the backlight unit 100.

[0061] The backlight unit 100 may include a point light source that emits monochromatic 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. The backlight unit 100 may emit uniform surface light forward by refracting, reflecting, and scattering the light emitted from the point light source.

[0062] like Figure 2 As shown, the backlight unit 100 may include a light source module 110. The light source module 110 can generate and emit light. For example, the light source module 110 may be configured to emit monochromatic light or white light.

[0063] The light source module 110 may include: a plurality of light sources 116, 117 and 118 configured to illuminate; and light source substrates 111, 112 and 113 on which the plurality of light sources 116, 117 and 118 are mounted (see Figure 4 wait).

[0064] A detailed description of the light source module 110 will be provided later.

[0065] like Figure 2 As shown, the backlight unit 100 may include a reflective sheet 120 configured to reflect light. The reflective sheet 120 may reflect light forward or in a direction close to the front.

[0066] For example, light source module 110 (e.g., light sources 116, 117, and 118 of light source module 110, see...) Figure 4 The light source module 110 can emit light in various directions in front of the reflector 120. The light emitted from the light source module 110 can be emitted not only toward the diffuser 130, which will be described later, but also toward the reflector 120, and the reflector 120 can reflect the light emitted toward the reflector 120 toward the diffuser 130.

[0067] According to an embodiment, when light emitted from the light source module 110 passes through various objects such as diffuser plate 130 and optical sheet 140, a portion of the light can be reflected from surfaces such as diffuser plate 130 and optical sheet 140, and reflector plate 120 can reflect the light forward.

[0068] like Figure 2 As shown, the backlight unit 100 may include a diffuser plate 130 configured to uniformly diffuse light. The diffuser plate 130 may be disposed in front of the light source module 110 and the reflector 120. The diffuser plate 130 may uniformly disperse the light emitted from the light source module 110 and then emit the uniformly dispersed light forward.

[0069] like Figure 2As shown, the backlight unit 100 may include an optical sheet 140 configured to further improve the brightness and brightness uniformity of the emitted light. The optical sheet 140 may be configured to refract and scatter light emitted from the front surface of the diffuser plate 130. For example, the optical sheet 140 may include various types of sheets, such as diffuser sheets, prism sheets, reflective polarizers, and quantum dot sheets.

[0070] The diffuser plate 130 and the optical sheet 140 can be referred to as optical components 130 and 140.

[0071] The display device 1 may include: a control component 50 configured to control the operation of the backlight unit 100 and the display panel 20; and a power component 60 configured to supply power to the backlight unit 100 and the display panel 20. The control component 50 and the power component 60 may be disposed in the main body 11.

[0072] As an example, control component 50 may include control circuitry configured to control the operation of display panel 20 and backlight unit 100. The control circuitry may process image data received from an external content source, send the image data to display panel 20, and send dimming data to backlight unit 100.

[0073] As an example, the power component 60 can supply power to the display panel 20 and the backlight unit 100, so that the backlight unit 100 outputs surface light and the display panel 20 blocks or transmits light from the backlight unit 100.

[0074] The control component 50 and the power component 60 can be implemented using printed circuit boards and various circuits mounted on the printed circuit boards. For example, the power circuit may include capacitors, coils, resistors, processors, etc., and a power circuit board on which these components are mounted. Additionally, the control circuit may include a memory, a processor, and a control circuit board on which these components are mounted.

[0075] The display device 1 may include a display housing configured to support various components of the main body 11 of the display device 1. In other words, the various components of the main body 11 can be housed inside the display housing. The display housing can form the shape of the display device 1.

[0076] As an example, the display housing can support the display panel 20. As an example, the display housing can support the backlight unit 100. As an example, the display housing can support the control component 50. As an example, the display housing can support the power component 60.

[0077] As an example, the display device 1 may include a top chassis 13. The top chassis 13 may be configured to support the front or side surfaces of the display panel 20. As an example, the top chassis 13 may be configured in the shape of a generally square frame.

[0078] The top chassis 13 can support the front surface of the display panel 20 by forming a bezel that faces the front of the display device 1. However, if the display device 1 is a bezel-less display device with a very narrow bezel or no bezel, the top chassis 13 can be configured to support only the side surfaces of the display panel 20. In some examples, where the bottom chassis 15 supports the side surfaces of the display panel 20, the display device 1 may not include the top chassis 13.

[0079] As an example, the display device 1 may include a bottom chassis 15. The bottom chassis 15 may cover the rear of the display panel 20. The bottom chassis 15 may be coupled to the rear of the top chassis 13. The bottom chassis 15 may support various components of the display device 1, such as the backlight unit 100, the control component 50, and the power component 60.

[0080] The bottom chassis 15 may be formed in the shape of a generally flat plate, but is not limited thereto. The bottom chassis 15 may be composed of a material with high thermal conductivity in order to dissipate the heat generated by the light source 1100 to the outside. As an example, the bottom chassis 15 may be composed of a metallic material (e.g., aluminum or SUS) or a plastic material (e.g., ABS).

[0081] As an example, the display device 1 may include an intermediate mold 14. The intermediate mold 14 may be disposed between the top chassis 13 and the bottom chassis 15. For example, the intermediate mold 14 may support at least some components of the backlight unit 100.

[0082] As an example, the display device 1 may include a rear cover 16. The rear cover 16 may be disposed behind the bottom chassis 15 and may cover the bottom chassis 15 and various components (e.g., control component 50, power component 60, etc.) mounted behind the bottom chassis 15.

[0083] In some examples, the display housing of the display device 1 according to this disclosure may not include some of the top chassis, intermediate mold, bottom chassis and rear cover.

[0084] The above reference Figure 2 The configuration of the described display device 1 is merely an example for illustrating the display device according to this disclosure, and this disclosure is not limited thereto. The display device according to this disclosure can be configured to include various configurations for performing functions of providing images through a screen.

[0085] Figure 3 This is an enlarged view of a portion of a cross-section of the display panel of a display device according to an embodiment of the present disclosure.

[0086] refer to Figure 3The display panel 20 included in the display device 1 according to an embodiment of the present disclosure can be configured as a liquid crystal display (LCD) panel for blocking or transmitting light emitted from the backlight unit 100. By blocking or transmitting light emitted from the backlight unit 100 through the display panel 20, an image I can be formed in front of the display panel 20.

[0087] The front surface of the display panel 20 can form the screen 12 of the display device 1. A plurality of pixels P can be disposed on the display panel 20. The plurality of pixels P disposed on the display panel 20 can each independently block or transmit light from the backlight unit 100, and the light transmitted by the plurality of pixels P can form an image I displayed on the screen 12.

[0088] For example, such as Figure 3 As shown, the display panel 20 may include a first polarizing film 21, a first transparent substrate 22, a pixel electrode 23, a thin film transistor 24, a liquid crystal layer 25, a common electrode 26, a color filter 27, a second transparent substrate 28, and a second polarizing film 29.

[0089] The first transparent substrate 22 and the second transparent substrate 28 can fix and support the pixel electrode 23, the thin film transistor 24, the liquid crystal layer 25, the common electrode 26, and the color filter 27. The first transparent substrate 22 and the second transparent substrate 28 can be composed of reinforced glass or transparent resin.

[0090] The first polarizing film 21 and the second polarizing film 29 can be disposed on the outside of the first transparent substrate 22 and the second transparent substrate 28.

[0091] The first polarizing film 21 and the second polarizing film 29 can each transmit specific light and block other light. For example, the first polarizing film 21 can transmit light having a magnetic field oscillating in a first direction and block other light. Similarly, the second polarizing film 29 can transmit light having a magnetic field oscillating in a second direction and block other light. In this case, the first and second directions can be orthogonal to each other. Therefore, the polarization direction of light passing through the first polarizing film 21 and the oscillation direction of light passing through the second polarizing film 29 can be orthogonal to each other. Therefore, generally speaking, light cannot pass through both the first polarizing film 21 and the second polarizing film 29 simultaneously.

[0092] The color filter 27 can be disposed on the inner side of the second transparent substrate 28.

[0093] For example, color filter 27 may include a red color filter 27R for transmitting red light, a green color filter 27G for transmitting green light, and a blue color filter 27B for transmitting blue light, and the red color filter 27R, green color filter 27G, and blue color filter 27B may be arranged side by side. The area where color filter 27 is formed may correspond to the aforementioned pixel P. The area where red color filter 27R is formed may correspond to red sub-pixel PR, the area where green color filter 27G is formed may correspond to green sub-pixel PG, and the area where blue color filter 27B is formed may correspond to blue sub-pixel PB.

[0094] The pixel electrode 23 can be disposed inside the first transparent substrate 22, and the common electrode 26 can be disposed inside the second transparent substrate 28.

[0095] The pixel electrode 23 and the common electrode 26 may be made of conductive metal material and may generate an electric field, which will be described later, to change the arrangement of the liquid crystal molecules 25a constituting the liquid crystal layer 25.

[0096] The pixel electrode 23 and the common electrode 26 can be made of a transparent material and can transmit light incident from the outside. For example, the pixel electrode 23 and the common electrode 26 can be made of indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowires, carbon nanotubes (CNTs), graphene, or 3,4-ethylenedioxythiophene (PEDOT). The thin-film transistor (TFT) 24 can be disposed on the inner side of the first transparent substrate 22.

[0097] Thin-film transistor 24 can either allow or block current flowing to pixel electrode 23. For example, depending on whether thin-film transistor 24 is on (closed) or off (open), an electric field can be generated or removed between pixel electrode 23 and common electrode 26.

[0098] The thin-film transistor 24 can be made of polycrystalline silicon and can be formed by semiconductor processes such as photolithography, deposition or ion implantation.

[0099] The liquid crystal layer 25 can be formed between the pixel electrode 23 and the common electrode 26. The liquid crystal layer 25 can be filled with liquid crystal molecules 25a.

[0100] Liquid crystals represent an intermediate state between solids (crystals) and liquids. Most liquid crystal materials are organic compounds with molecules that are elongated rod-shaped and whose molecular arrangement may appear irregular in some directions but may exhibit a regular crystalline form in others. Therefore, liquid crystals can possess both the fluidity of liquids and the optical anisotropy of crystals (solids).

[0101] Furthermore, liquid crystals can exhibit optical properties that depend on changes in the electric field. For example, the orientation of the molecules constituting the liquid crystal can change depending on the change in the electric field. When an electric field is generated in the liquid crystal layer 25, the liquid crystal molecules 25a of the liquid crystal layer 25 can align according to the direction of the electric field, and when no electric field is generated in the liquid crystal layer 25, the liquid crystal molecules 25a can be arranged irregularly or along the alignment layer. Therefore, the optical properties of the liquid crystal layer 25 can vary depending on the presence or absence of an electric field passing through the liquid crystal layer 25.

[0102] The above reference Figure 3 The structure of the described display panel 20 is merely an example of the structure that a display panel of a display device according to this disclosure may have, and this disclosure is not limited thereto.

[0103] Figure 4 The interior of a display device according to an embodiment of the present disclosure is shown. Figure 5 This is an exploded view showing a configuration of a portion of a display device according to an embodiment of the present disclosure. Figure 6 This is a front view of a part of a display device according to an embodiment of the present disclosure. Figure 7 yes Figure 6 An enlarged view of part A shown. Figure 8 It shows Figure 7 The third light source substrate is separated from the connector.

[0104] refer to Figure 4 and Figure 5 The display device 1 according to an embodiment of the present disclosure may include a reflective sheet 120 and a light source module 110 disposed on the reflective sheet 120. As an example, the light source module 110 may be positioned in front of the reflective sheet 120.

[0105] The display device 1 according to an embodiment of the present disclosure can be configured such that a reflector 120 is disposed in front of a bottom chassis 15 and a light source module 110 is disposed in front of the reflector 120.

[0106] The light source module 110 of the display device 1 according to an embodiment of the present disclosure may include light source substrates 111, 112 and 113 disposed in front of the reflector 120. The light source substrates 111, 112 and 113 of the light source module 110 may be positioned in front of the reflector 120.

[0107] As an example, the light source module 110 may include a first light source substrate 111 and a second light source substrate 112 positioned below the first light source substrate 111. The second light source substrate 112 may be arranged parallel to the first light source substrate 111. The first light source substrate 111 and the second light source substrate 112 may be arranged in a vertical direction. The second light source substrate 112 may be configured to be spaced apart from the first light source substrate 111.

[0108] As an example, the light source module 110 may include a third light source substrate 113 connected to the first light source substrate 111. The third light source substrate 113 may be electrically connected to the first light source substrate 111. The first light source substrate 111 and the third light source substrate 113 may be arranged in a left-right direction.

[0109] The display device 1 according to the embodiments of the present disclosure may further include an additional light source substrate, but is not limited to a first light source substrate 111, a second light source substrate 112 and a third light source substrate 113.

[0110] The light source module 110 of the display device 1 according to an embodiment of the present disclosure may include a plurality of first light sources 116 mounted on a first light source substrate 111. As an example, the first light source substrate 111 may have a strip extending in a left-right direction, and the plurality of first light sources 116 may be arranged on the first light source substrate 111 in a left-right direction. The plurality of first light sources 116 may be spaced apart from each other on the first light source substrate 111.

[0111] The light source module 110 of the display device 1 according to an embodiment of the present disclosure may include a plurality of second light sources 117 mounted on a second light source substrate 112. As an example, the second light source substrate 112 may have a strip extending in a left-right direction, and the plurality of second light sources 117 may be arranged on the second light source substrate 112 in a left-right direction. The plurality of second light sources 117 may be spaced apart from each other on the second light source substrate 112.

[0112] The light source module 110 of the display device 1 according to an embodiment of the present disclosure may include a plurality of third light sources 118 mounted on a third light source substrate 113. As an example, the third light source substrate 113 may have a strip extending in a left-right direction, and the plurality of third light sources 118 may be arranged on the third light source substrate 113 in a left-right direction. The plurality of third light sources 118 may be spaced apart from each other on the third light source substrate 113.

[0113] The display device 1 according to the embodiments of the present disclosure may further include additional light sources, but is not limited to a plurality of first light sources 116, a plurality of second light sources 117 and a plurality of third light sources 118.

[0114] According to an embodiment of the present disclosure, the reflector 120 of the display device 1 can be positioned behind the light source module 110. The reflector 120 may include a mounting portion 121 on which the light source module 110 is mounted and an edge portion 122 disposed along the edge of the mounting portion 121.

[0115] The edge portion 122 may be formed to be inclined relative to the mounting portion 121. For example, the edge portion 122 may be inclined relative to the mounting portion 121 such that the reflector 120 can correspond to the shape of the bottom chassis 15. Since the front surface of the bottom chassis 15 is formed concave to accommodate the light source module 110, the reflector 120 can be formed concave to correspond to the shape of the bottom chassis 15. Therefore, the edge portion 122 may be inclined relative to the mounting portion 121 to form a concave shape together with the mounting portion 121.

[0116] The edge portion 122 of the reflective sheet 120 can be configured to reduce brightness. Since the reflective sheet 120 is concave, the brightness at the edge portion 122 can be higher than the brightness at the mounting portion 121. Therefore, the display device 1 according to embodiments of the present disclosure can have a configuration for reducing the brightness in the edge portion 122 to achieve uniform brightness. For example, the display device 1 can be configured to reduce brightness by applying black ink to the edge portion 122.

[0117] The display device 1 according to an embodiment of the present disclosure may include a support 150 configured to maintain a distance between a plurality of light sources 116, 117, and 118 of the light source module 110 and optical components 130 and 140. The support 150 may be disposed on a reflective sheet 120. The support 150 may be disposed between the reflective sheet 120 and the optical components 130 and 140. The support 150 may support components disposed in front of the light source module 110. As an example, the support 150 may support a diffuser plate 130 and / or an optical sheet 140. The support 150 may extend from the reflective sheet 120. For example, the support 150 may extend between the reflective sheet 120 and the diffuser plate 130.

[0118] The support member 150 can be configured to maintain the optical characteristics of the display device 1 by maintaining the optical distance (OD) between the plurality of light sources 116, 117 and 118 of the light source module 110 and the optical components 130 and 140. For example, the support member 150 can be configured to have a length capable of maintaining the optical characteristics of the backlight unit 100.

[0119] refer to Figures 6 to 8 According to embodiments of the present disclosure, the display device 1 can be configured such that a first distance y between any of a plurality of first light sources 116 mounted on a first light source substrate 111 and any of a plurality of second light sources 117 mounted on a second light source substrate 112 is different from a second distance x between the plurality of first light sources 116 mounted on the first light source substrate 111. For example, the first distance y may include the closest distance among the distances between one of the plurality of first light sources 116 mounted on the first light source substrate 111 and one of the plurality of second light sources 117 mounted on the second light source substrate 112.

[0120] The display device 1 according to an embodiment of the present disclosure can be configured such that a first distance y is greater than or equal to twice the second distance x and less than or equal to four times the second distance x. For example, when the first distance y is set to be less than twice the second distance x, the reflectivity of the reflective sheet 120 can be higher than the reflectivity of the light source substrates 111, 112, and 113, making the light source substrates 111, 112, and 113 visible on the screen 12. For example, when the first distance y is set to be greater than four times the second distance x, there is insufficient light to drive the display device 1.

[0121] Since the display device 1 according to the embodiments of the present disclosure is configured such that the first distance y is greater than or equal to twice the second distance x and less than or equal to four times the second distance x, more light can be provided to the light source substrates 111, 112 and 113, and therefore, even if the reflectivity of the light source substrates 111, 112 and 113 is lower than the reflectivity of the reflector 120, the uniformity of the image displayed on the screen 12 can be improved.

[0122] The display device 1 according to an embodiment of the present disclosure may include a substrate connector 115 for connecting a first light source substrate 111 and a third light source substrate 113. For example, the first light source substrate 111 may be connected to one side of the substrate connector 115, and the third light source substrate 113 may be connected to the opposite side of the substrate connector 115. As an example, the side of the first light source substrate 111 opposite to the side connected to the substrate connector 115 may be electrically connected to a control component 50 and / or a power component 60, and the third light source substrate 113 may be electrically connected to the control component 50 and / or the power component 60 by connecting to the first light source substrate 111 through the substrate connector 115.

[0123] refer to Figure 5 , Figure 7 and Figure 8 According to an embodiment of the present disclosure, the light source module 110 of the display device 1 can be mounted on the bottom chassis 15. The light source substrates 111, 112 and 113 of the light source module 110 can be detachably mounted on the bottom chassis 15.

[0124] The bottom chassis 15 may include a module mounting protrusion 15a for mounting the light source module 110. The module mounting protrusion 15a may protrude forward from the front surface of the chassis 15.

[0125] A reflector 120 of the display device 1 according to an embodiment of the present disclosure can be housed in a bottom chassis 15. The reflector 120 may include a first opening 126 formed to allow a module mounting protrusion 15a of the bottom chassis 15 to pass through. As an example, the first opening 126 may be perforated. When the reflector 120 is mounted on the chassis 15, the module mounting protrusion 15a can pass through the first opening 126 and protrude further forward than the reflector 120. The first opening 126 may be formed to allow the module mounting protrusion 15a to pass through for coupling to light source substrates 111, 112, and 113.

[0126] The light source module 110 can be mounted on the bottom chassis 15 with the reflector 120 mounted on it. For example, to mount the first light source substrate 111 to the bottom chassis 15, the first light source substrate 111 may include a first substrate mounting portion 111a. The first substrate mounting portion 111a may include a first through portion 111aa through which the module mounting protrusion 15a can pass and a first limiting portion 111ab that can restrict the forward / backward movement of the module mounting protrusion 15a. As the module mounting protrusion 15a passes through the first through portion 111aa and then moves to the first limiting portion 111ab, the first light source substrate 111 can be mounted on the bottom chassis 15. As the module mounting protrusion 15a is inserted into the first through portion 111aa and then slides to the first limiting portion 111ab, the first light source substrate 111 can be mounted on the bottom chassis 15.

[0127] For example, to mount the second light source substrate 112 to the bottom chassis 15, the second light source substrate 112 may include a second substrate mounting portion 112a. The second substrate mounting portion 112a may include a second through-part 112aa through which the module mounting protrusion 15a can pass, and a second limiting portion 112ab capable of restricting forward / backward movement of the module mounting protrusion 15a. As the module mounting protrusion 15a passes through the second through-part 112aa and then moves to the second limiting portion 112ab, the second light source substrate 112 can be mounted on the bottom chassis 15. As the module mounting protrusion 15a is inserted into the second through-part 112aa and then slides to the second limiting portion 112ab, the second light source substrate 112 can be mounted on the bottom chassis 15.

[0128] For example, to mount the third light source substrate 113 to the bottom chassis 15, the third light source substrate 113 may include a third substrate mounting portion 113a. The third substrate mounting portion 113a may include a third through-partition 113aa through which the module mounting protrusion 15a can pass, and a third limiting portion 113ab capable of restricting the forward / backward movement of the module mounting protrusion 15a. As the module mounting protrusion 15a passes through the third through-partition 113aa and then moves to the third limiting portion 113ab, the third light source substrate 113 can be mounted on the bottom chassis 15. As the module mounting protrusion 15a is inserted into the third through-partition 113aa and then slides to the third limiting portion 113ab, the third light source substrate 113 can be mounted on the bottom chassis 15.

[0129] refer to Figure 7 and Figure 8 For example, the third light source substrate 113 can be mounted on the bottom chassis 15 while the reflector 120 is mounted on the bottom chassis 15. Figure 8 As shown, the third light source substrate 113 is positioned such that the module mounting protrusion 15a of the bottom chassis 15 passes through the third through portion 113aa. With the module mounting protrusion 15a positioned through the third through portion 113aa, the third light source substrate 113 can move such that the module mounting protrusion 15a is positioned within the third limiting portion 113ab. As an example, with the module mounting protrusion 15a positioned through the third through portion 113aa, the third light source substrate 113 can move in the direction of connection with the substrate connector 115.

[0130] refer to Figure 7 The third light source substrate 113 can be mounted on the bottom chassis 15, and can also be connected to the substrate connector 115 as the module mounting protrusion 15a is positioned on the third limiting portion 113ab.

[0131] refer to Figure 5 The bottom chassis 15 may include a support mounting portion 15b, allowing the support 150 to be mounted on the bottom chassis 15. The support mounting portion 15b may project forward from the front surface of the chassis 15.

[0132] refer to Figure 5 The reflector 120 may include a second opening 127 formed to allow a support mounting portion 15b of the bottom chassis 15 to pass through. For example, the second opening 127 may have a hole shape. When the reflector 120 is mounted on the bottom chassis 15, the support mounting portion 15b can protrude further forward than the reflector 120 by passing through the second opening 127.

[0133] With the reflector 120 mounted on the bottom chassis 15, the support member 150 can be mounted on the bottom chassis 15. For example, to mount the support member 150 to the bottom chassis 15, the support member 150 may include a support member coupling portion 151. The support member coupling portion 151 may include a support passing portion 151a through which the support member mounting portion 15b can pass, and a support limiting portion 151b capable of restricting the movement of the support member mounting portion 15b in the front-rear direction. As the support member mounting portion 15b passes through the support passing portion 151a and then moves to the support limiting portion 151b, the support member 150 can be mounted on the bottom chassis 15.

[0134] In the display device 1 according to an embodiment of the present disclosure, since the light source module 110 and the reflector 120 can be mounted on the bottom chassis 15 as the reflector 120 is mounted on the bottom chassis 15 and then the light source module 110 is mounted on the bottom chassis 15, the ease of assembly can be improved compared to the structure in which the light source module 110 is disposed behind the reflector 120 (i.e., the method in which the light source module 110 is mounted on the bottom chassis 15, the reflector 120 is mounted on the bottom chassis 15 and then the reflector 120 is fixed to the light source module 110).

[0135] Figure 9 The optical profile of one of a plurality of light sources in the light source module of a display device according to an embodiment of the present disclosure is schematically shown.

[0136] In the following text, for ease of explanation, one of a plurality of first light sources 116 mounted on a first light source substrate 111 will be described, and the configuration of the one first light source 116 can also be applied to the plurality of first light sources 116, and can also be applied to the plurality of second light sources 117 and / or the plurality of third light sources 118.

[0137] refer to Figure 9 The first light source substrate 111 can be disposed in front of the reflector 120, and the first light source 116 mounted on the first light source substrate 111 can include a light-emitting diode 116a and a light source lens 116b, wherein the light source lens 116b is configured to cover the light-emitting diode 116a in order to protect the light-emitting diode 116a.

[0138] The first light source 116 disposed on the first light source substrate 111 can be configured such that the width of the region in the light profile F that is half the brightness of the brightest part (in front of the light-emitting diode 116a) is the maximum half width W.

[0139] The display device 1 according to an embodiment of the present disclosure can be configured such that the maximum half-width W of the first light source 116 is greater than a first distance y. For example, the maximum half-width W of the first light source 116 can be set to be greater than or equal to the first distance y between any of the plurality of first light sources 116 mounted on the first light source substrate 111 and any of the plurality of second light sources 117 mounted on the second light source substrate 112, and less than or equal to 1.15 times the first distance y.

[0140] When the display device 1 according to an embodiment of the present disclosure is designed such that the maximum half-width W of each of the plurality of light sources 116, 117 and 118 mounted on the light source substrates 111, 112 and 113 is greater than or equal to a first distance y between any of the plurality of first light sources 116 mounted on the first light source substrate 111 and any of the plurality of second light sources 117 mounted on the second light source substrate 112 and is less than or equal to 1.15 times the first distance y, more light can be provided to the light source substrates 111, 112 and 113, thereby increasing the brightness.

[0141] Figure 10 yes Figure 6 An enlarged view of part B shown.

[0142] In the following text, for ease of explanation, some of the first light source substrate 111 and the plurality of first light sources 116 will be described, and the configuration of the first light source substrate 111 and the plurality of first light sources 116 can also be applied to the second light source substrate 112 and the plurality of second light sources 117 and can also be applied to the third light source substrate 113 and the plurality of third light sources 118.

[0143] refer to Figure 10 The display device 1 according to embodiments of the present disclosure may further include a reflector 160 for improving the reflectivity of the first light source substrate 111 of the light source module 110. As an example, the reflector 160 may include white ink. For instance, the reflector 160 may include photoresist (PSR). The reflector 160 can improve the reflectivity difference between the first light source substrate 111 and the reflective sheet 120.

[0144] The reflectors 160 of the display device 1 according to embodiments of the present disclosure may be arranged in different numbers depending on a predetermined area on the first light source substrate 111. For example, a relatively small number of reflectors 160 may be applied to a first region 161 adjacent to each of the plurality of first light sources 116, and a relatively large number of reflectors 160 may be applied to a second region 162 spaced apart from the plurality of first light sources 116. The second region 162 may be disposed between the plurality of first light sources 116.

[0145] As an example, reflector 160 can be applied to the first light source substrate 111. For example, since the second region 162 is spaced apart from the plurality of first light sources 116, the second region 162 may be relatively less illuminated compared to the first region 161. Therefore, the reflectivity of light in the second region 162 can be increased more than that in the first region 161, thereby improving the overall brightness uniformity of the display device 1.

[0146] The display device according to an embodiment includes: a reflective sheet; a light source substrate, which is on the reflective sheet and includes a first light source substrate and a second light source substrate; and a plurality of light sources, including a plurality of first light sources on the first light source substrate and a plurality of second light sources on the second light source substrate. A first distance between a first light source among the plurality of first light sources and a second light source among the plurality of second light sources is greater than or equal to twice a second distance and less than or equal to four times the second distance. The second distance is the distance between adjacent first light sources among the plurality of first light sources.

[0147] The first distance can be the minimum distance between one of the multiple first light sources and one of the multiple second light sources.

[0148] The first light source substrate and the second light source substrate can be separated in the vertical direction.

[0149] The display device may also include a bottom chassis configured to house a reflector. A light source substrate may be configured to be mounted on the bottom chassis with the reflector mounted on it.

[0150] The bottom chassis may include a module mounting protrusion. The light source substrate may include: a through portion into which the module mounting protrusion is configured to be inserted; and a limiting portion configured to limit the disengagement of the module mounting protrusion when it is inserted into the limiting portion.

[0151] With the module mounting protrusion inserted into the through portion, the light source substrate can be configured to be mounted on the bottom chassis as the module mounting protrusion is inserted into the limiting portion.

[0152] The reflector may include an opening through which a module mounting protrusion is inserted to couple with the light source substrate.

[0153] The display device may further include: a display panel; an optical component between the display panel and the reflective sheet; and a support on the reflective sheet and configured to support the optical component.

[0154] The reflectivity of the light source substrate can be lower than that of the reflective sheet.

[0155] The width of the region surrounding one of the multiple light sources can be based on the distance from the brightest part of the light source to a point with a brightness half that of the brightest part. This width can be greater than or equal to a first distance and less than or equal to 1.15 times the first distance.

[0156] The display device may further include: a reflector disposed on a light source substrate, and the number of reflectors disposed in a second region spaced apart from the plurality of light sources is greater than the number disposed in a first region adjacent to the plurality of light sources.

[0157] The reflector may include photoresist (PSR) on the light source substrate.

[0158] At least a portion of the edge of the reflector may have a lower reflectivity compared to another portion of the reflector.

[0159] The distance between multiple second light sources can be equal to the distance between multiple first light sources.

[0160] The display device may further include: a third light source substrate arranged in a left-right direction with the first light source substrate; and a substrate connector configured to electrically connect the first light source substrate and the third light source substrate.

[0161] The display device according to an embodiment includes: a bottom chassis; a reflective sheet disposed in front of the bottom chassis; a first light source substrate disposed in front of the reflective sheet; a second light source substrate disposed in front of the reflective sheet and arranged vertically with respect to the first light source substrate; a plurality of first light sources mounted on the first light source substrate; and a plurality of second light sources mounted on the second light source substrate. The closest first distance among the distances between one of the plurality of first light sources and one of the plurality of second light sources is set to be greater than or equal to twice and less than or equal to four times the second distance x between the plurality of first light sources.

[0162] When the reflector is mounted on the bottom chassis, the first light source substrate and the second light source substrate can be detachably mounted on the bottom chassis.

[0163] At least one of the plurality of first light sources or the plurality of second light sources can be configured such that the width W of the region whose brightness is half that of the brightest part is greater than or equal to the first distance and less than or equal to 1.15 times the first distance.

[0164] The display device may further include a reflector to be applied to at least one of the first light source substrate and the second light source substrate, and the reflector is configured to be applied in a second region spaced apart from the plurality of first light sources or the plurality of second light sources in a greater amount than in a first region adjacent to the plurality of first light sources or the plurality of second light sources.

[0165] The reflectivity of at least one of the first light source substrate and the second light source substrate can be set to be lower than that of the reflective sheet.

[0166] According to embodiments of this disclosure, the ease of assembling the display device can be improved by arranging the light source module in front of the reflector.

[0167] According to embodiments of the present disclosure, the display device can be configured such that the distance between a plurality of light sources is set such that more light is provided to the light source substrate than to the reflector, thereby improving brightness.

[0168] According to embodiments of this disclosure, compared to the case where the distance between multiple light sources mounted on a single substrate is the same as the distance between light sources mounted on different substrates, the display device can be configured to use fewer light source substrates, thereby reducing material costs.

[0169] The effects that can be obtained from this disclosure are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art to which this disclosure pertains based on the following description.

[0170] The foregoing has shown and described specific embodiments. However, those skilled in the art will understand that this disclosure is not limited to the above embodiments, and various changes and modifications can be made without departing from the technical concept of this disclosure as described in the appended claims.

Claims

1. A display device, comprising: Reflector; A light source substrate is placed on the reflective sheet and includes a first light source substrate and a second light source substrate. as well as Multiple light sources, including multiple first light sources on the first light source substrate and multiple second light sources on the second light source substrate. Wherein, the first distance between the first light source among the plurality of first light sources and the second light source among the plurality of second light sources is greater than or equal to twice the second distance and less than or equal to four times the second distance, and Wherein, the second distance is the distance between adjacent first light sources among the plurality of first light sources.

2. The display device according to claim 1, wherein, The first distance is the minimum distance among the distances between one of the plurality of first light sources and one of the plurality of second light sources.

3. The display device according to claim 1, wherein, The first light source substrate and the second light source substrate are separated in the vertical direction.

4. The display device according to claim 1, further comprising: The bottom chassis is configured to house the reflector. The light source substrate is configured to be mounted on the bottom chassis while the reflector is mounted on the bottom chassis.

5. The display device according to claim 4, wherein, The bottom chassis includes module mounting protrusions, and The light source substrate includes: The module mounting protrusion is configured to insert into the through portion; and The limiting portion is configured to restrict the disengagement of the module mounting protrusion when the module mounting protrusion is inserted into the limiting portion.

6. The display device according to claim 5, wherein, With the module mounting protrusion inserted into the through portion, the light source substrate is configured to be mounted on the bottom chassis as the module mounting protrusion is inserted into the limiting portion.

7. The display device according to claim 5, wherein, The reflector includes an opening through which the module mounting protrusion is inserted to couple with the light source substrate.

8. The display device according to claim 1, further comprising: Display panel; An optical component is located between the display panel and the reflective sheet. as well as A support member is located on the reflector and is configured to support the optical component.

9. The display device according to claim 1, wherein, The reflectivity of the light source substrate is less than that of the reflective sheet.

10. The display device according to claim 1, wherein, The width of the region surrounding one of the plurality of light sources is based on the distance from the brightest part of that light source to a point with a brightness half that of the brightest part, and Wherein, the width is greater than or equal to the first distance and less than or equal to 1.15 times the first distance.

11. The display device according to claim 1, further comprising: The reflectors are arranged on the light source substrate, and the number of them arranged in a second region spaced apart from the plurality of light sources is greater than the number arranged in a first region adjacent to the plurality of light sources.

12. The display device according to claim 11, wherein, The reflector includes photoresist (PSR) on the light source substrate.

13. The display device according to claim 1, wherein, At least a portion of the edge of the reflective sheet has a reduced reflectivity compared to another portion of the reflective sheet.

14. The display device according to claim 1, wherein, The distance between the plurality of second light sources is equal to the distance between the plurality of first light sources.

15. The display device according to claim 1, further comprising: The third light source substrate is arranged in the left-right direction with the first light source substrate; A substrate connector is configured to electrically connect the first light source substrate and the third light source substrate.

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