Display apparatus

Abstract

A display apparatus comprises: a display panel; a reflective sheet provided behind the display panel to reflect light toward the display panel; a rear chassis provided behind the reflective sheet to support the reflective sheet, the rear chassis having a fixing hole; and a fixing member provided to fix the reflective sheet to the rear chassis. The fixing member includes: an insertion part provided to penetrate the reflective sheet to be inserted into the fixing hole; and a bent part bent from a first step of the insertion part to prevent the insertion part from being drawn out from the fixing hole.

Description

display device

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

[0002] A display device is a type of output device that converts acquired or stored electrical information into visual information and displays it to the user.

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

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

[0005] 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.

[0006] Provides a display device with improved assembly.

[0007] A display device having improved productivity and uniform quality characteristics is provided based on automation of reflective sheet fixing.

[0008] A display device is provided that can prevent wrinkles from forming on a reflective sheet due to shrinkage and expansion of the reflective sheet.

[0009] The present disclosure is not limited to the technical features and functions mentioned above, and other technical features and functions not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0010] A display device according to the present disclosure includes a display panel, a reflective sheet arranged at the rear of the display panel to reflect light, a rear chassis provided to support the reflective sheet at the rear of the reflective sheet and having a fixing hole, and a fixing member provided to fix the reflective sheet to the rear chassis. The fixing member includes an insertion portion provided to penetrate the reflective sheet and be inserted into the fixing hole, and a bending portion bent at an end of the insertion portion so that the insertion portion is not pulled out of the fixing hole.

[0011] A display device according to the present disclosure includes a display panel, a light source module configured to supply light to the display panel, a reflective sheet arranged at the rear of the display panel and the light source module to reflect the light, a rear chassis configured to support the reflective sheet and the light source module at the rear of the reflective sheet and having a first fixing hole and a second fixing hole, and a fixing member configured to fix the reflective sheet to the rear chassis. The above fixing member includes a first insertion portion provided to be inserted into the first fixing hole through the reflective sheet, a second insertion portion provided to be inserted into the second fixing hole through the reflective sheet, a connecting portion connecting one end of the first insertion portion and one end of the second insertion portion, a first bend portion bent at the other end of the first insertion portion so that the first insertion portion is not pulled out from the first fixing hole, and a second bend portion bent at the other end of the second insertion portion so that the second insertion portion is not pulled out from the second fixing hole.

[0012] FIG. 1 illustrates a display device according to one or more embodiments.

[0013] FIG. 2 is an exploded view of a display device according to one or more embodiments.

[0014] FIG. 3 is an enlarged cross-section of a portion of a display module in a display device according to one or more embodiments.

[0015] FIG. 4 illustrates a portion of a display device according to one or more embodiments.

[0016] Figure 5 is an exploded view of a portion of the display device illustrated in Figure 4.

[0017] Figure 6 is an enlarged view of area A of Figure 4.

[0018] Fig. 7 is an enlarged view of area A of Fig. 4, showing the appearance before the fixing member fixes the reflective sheet to the rear chassis.

[0019] Figure 8 illustrates the rear of the area illustrated in Figure 6.

[0020] Figure 9 shows a cross-section along line BB' of Figure 6.

[0021] FIG. 10 illustrates a rear chassis and a reflective sheet fixed to the rear chassis in a display device according to one or more embodiments.

[0022] Figure 11 is an enlarged view of area C of Figure 10.

[0023] The embodiments described in this disclosure and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and there may be various modified examples that can replace the embodiments and drawings of this disclosure at the time of filing of this application.

[0024] Additionally, the same reference numbers or symbols presented in each drawing of the present disclosure represent parts or components that perform substantially the same function.

[0025] Additionally, the singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0026] Additionally, in this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0027] Additionally, the terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," and "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0028] In addition, the terminology used in this disclosure is used to describe embodiments and is not intended to limit and / or restrict the disclosed invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this disclosure, the terms "comprise" or "have" and the like are intended to indicate the presence of a feature, number, step, operation, component, part, or combination thereof described in the disclosure, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0029] Additionally, terms including ordinal numbers such as "first," "second," etc., used in the present disclosure may be used to describe various components, but the components are not limited by the terms, and the terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term "and / or" includes any combination of a plurality of related described items or any item among a plurality of related described items.

[0030] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0031] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0032] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0033] Meanwhile, the terms "up-down direction", "front-back direction", etc. used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms. For example, the terms "front" and "rear" below may be defined based on the X direction shown in the drawings, respectively. The terms "upper" and "lower" below may be defined based on the Z direction shown in the drawings, respectively. The terms "left direction" and "right direction" below may be defined based on the Y direction shown in the drawings, respectively. The term "vertical direction" below may mean the Z direction shown in the drawings, respectively, and the term "horizontal direction" below may mean the Y direction shown in the drawings, respectively.

[0034] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0035] FIG. 1 illustrates a display device according to one or more embodiments.

[0036] Referring to FIG. 1, a display device (1) according to one or more embodiments can process an image signal received from an external source and visually display the processed image. In FIG. 1, the display device (1) is exemplified as a television (TV), but is not limited thereto. For example, the display device (1) may include various devices such as a monitor, which is a type of computer output device, a portable multimedia device, a portable communication device, etc. The form of the display device (1) is not limited as long as it is a device that visually displays an image.

[0037] The display device (1) may include a large format display (LFD) installed outdoors, such as on a building rooftop or a bus stop. "Outdoors" is not necessarily limited to the outdoors, and may include indoor locations where many people may enter and exit, such as subway stations, shopping malls, movie theaters, companies, and stores.

[0038] In Fig. 1, a flat display device with a flat screen is described as an example, but the display device (1) is not limited thereto, and the display device according to the concept of the present disclosure may include a curved display device or a bendable or flexible display device whose flat and curved states can be changed. The display device (1) is not limited in its screen size or ratio, and may include screens of various shapes.

[0039] The display device (1) can receive content including video signals and audio signals from various content sources, and output video and audio corresponding to the video signals and audio signals. For example, the display device (1) can receive content data via a broadcast reception antenna or a wired cable, receive content data from a content playback device, or receive content data from a content provider's content provision server.

[0040] The display device (1) can display an image corresponding to video data and output a sound corresponding to audio data. For example, the display device (1) can restore a plurality of image frames included in the video data and continuously display the plurality of image frames. In addition, the display device (1) can restore an audio signal included in the audio data and continuously output a sound according to the audio signal.

[0041] As illustrated in FIG. 1, the display device (1) may include a main body (11) and a screen (12) that displays an image (I).

[0042] The display device (1) can be installed in a standing manner on an indoor or outdoor floor or furniture, or can be installed in a wall-mounted manner on a wall or within a wall. For example, the display device (1) can include a support leg (19) provided at the lower portion of the main body (11) so that it can be installed in a standing manner on an indoor or outdoor floor or furniture.

[0043] The main body (11) can form the outer shape of the display device (1). Parts for performing various functions, such as displaying an image (I) by the display device (1), can be provided inside the main body (11).

[0044] The display device (1) can be configured to display an image (I). Specifically, the screen (12) can be formed on the front of the main body (11), and the display device (1) can display the image (I) through the screen (12). For example, the screen (12) can display a still image or a moving image. In addition, the screen (12) can display a two-dimensional flat image or a three-dimensional stereoscopic image using the parallax of the user's two eyes.

[0045] A plurality of pixels (P) may be formed on the screen (12). An image (I) displayed on the screen (12) may be formed by light emitted from each of the plurality of pixels (P). For example, an image (I) may be formed on the screen (12) by combining the light emitted from the plurality of pixels (P) like a mosaic.

[0046] Each of the plurality of pixels (P) can emit light of various brightness and colors. Specifically, each of the plurality of pixels (P) can include a red sub-pixel (PR) capable of emitting red light, a green sub-pixel (PG) capable of emitting green light, and a blue sub-pixel (PB) capable of emitting blue light. For example, the red light can represent light with a wavelength of approximately 620 nm (nanometer) to 750 nm, the green light can represent light with a wavelength of approximately 495 nm to 570 nm, and the blue light can represent light with a wavelength of approximately 450 nm to 495 nm.

[0047] Each of the plurality of pixels (P) can emit light of various brightness and colors by combining the light emitted from the red sub-pixel (PR), the green sub-pixel (PG), and the blue sub-pixel (PB), respectively.

[0048] FIG. 2 is an exploded view of a display device according to one or more embodiments.

[0049] Referring to FIG. 2, various components for generating an image (I) on a screen (12) may be provided inside a main body (11) of a display device (1) according to one or more embodiments.

[0050] For example, the display device (1) may include a display panel (20). The display panel (20) may be provided on the main body (11). The display panel (20) may be provided to display an image (I). The screen (12) described in FIG. 1 may be formed on the front surface of the display panel (20).

[0051] For example, the display panel (20) may have an approximately rectangular shape. Specifically, the display panel (20) may have a shape in which the lengths of the horizontal and vertical sides are different from each other. That is, the display panel (20) may be provided to have a long side and a short side. The display panel (20) may be provided in a rectangular plate shape. However, the present invention is not limited thereto, and the display panel (20) may also be provided in a square plate shape in which the long side and the short side have the same length.

[0052] The display panel (20) can be provided in various sizes. The ratio of the long side to the short side of the display panel (20) is not limited to general cases such as 16:9 or 4:3, but can be provided in any arbitrary ratio.

[0053] In a display device (1) according to one or more embodiments, the display panel (20) may be configured as a panel of a light-emitting display type such as a liquid crystal display (LCD).

[0054] On one side of the display panel (20), a cable (20a) for transmitting image data to the display panel (20) and a display driver integrated circuit (DDI) (30) (hereinafter referred to as a 'driver IC') for processing digital image data and outputting an analog image signal may be provided.

[0055] The cable (20a) can electrically connect the control assembly (50) and the driver IC (30) and the power assembly (60) and the driver IC (30). The cable (20a) can electrically connect the driver IC (30) and the display panel (20). The cable (20a) may include a flexible flat cable or a film cable that can be bent.

[0056] The driver IC (30) can receive image data and power from the control assembly (50) and the power assembly (60) through the cable (20a), and transmit image data and driving current to the display panel (20) through the cable (20a).

[0057] In addition, the cable (20a) and the driver IC (30) can be implemented as a single unit through a method such as a film cable, a chip on film (COF), a tape carrier packet (TCP), etc. In other words, the driver IC (30) can be placed on the cable (20b). However, this is not limited thereto, and the driver IC (30) can be placed on the display panel (20).

[0058] A detailed description of the structure of the display panel (20) will be described later.

[0059] The display device (1) may include a backlight unit (100) configured to irradiate light toward the display panel (20). The backlight unit (100) may be provided in the main body (11). The backlight unit (100) may be arranged at the rear of the display panel (20) and configured to irradiate light toward the front where the display panel (20) is located. The display panel (20) may block or allow light emitted from the backlight unit (100) to pass through.

[0060] The backlight unit (100) may include a point light source that emits monochromatic light or white light. The backlight unit (100) may be configured to refract, reflect, and scatter light to convert light emitted from the point light source into uniform surface light. The backlight unit (100) may emit uniform surface light toward the front by refracting, reflecting, and scattering light emitted from the point light source.

[0061] Referring to FIG. 2, the backlight unit (100) may include a light source module (110). The light source module (110) may generate and emit light. The light source module (110) may be configured to emit monochromatic light or white light.

[0062] The light source module (110) may include a plurality of light sources (111) arranged to irradiate light, and a light source substrate (112) on which the plurality of light sources (111) are mounted.

[0063] According to one or more embodiments, the light source module (110) may include a bar-type light source substrate (112) extending along one direction. A plurality of light sources (111) may be mounted on the light source substrate (112) so as to be spaced apart from each other along the one direction. The one direction may refer to the left-right direction, the horizontal direction, or the Y direction.

[0064] The light source module (110) may include a plurality of light source substrates (112) that are spaced apart from each other. The plurality of light source substrates (112) may be spaced apart in the vertical direction, the vertical direction, or the Z direction.

[0065] Referring to FIG. 2, the backlight unit (100) may include a reflective sheet (120) configured to reflect light. The reflective sheet (120) may reflect light forward or in a direction close to the forward direction. The reflective sheet (120) may be fixed or coupled to the rear chassis (16). The method and structure by which the reflective sheet (120) is fixed or coupled to the rear chassis (16) will be described later.

[0066] The light source module (110) can emit light in various directions in front of the reflective sheet (120). The light source module (110) can emit light not only toward the diffusion plate (130) described later, but also toward the reflective sheet (120). The reflective sheet (120) can reflect the light emitted toward the reflective sheet (120) toward the diffusion plate (130).

[0067] When light emitted from a light source module (110) passes through various objects such as a diffuser plate (130) and an optical sheet (140), some of it may be reflected from the surface of the diffuser plate (130) and the optical sheet (140), and the reflective sheet (120) can reflect the reflected light forward again for this reason.

[0068] Referring to FIG. 2, the backlight unit (100) may include a diffuser plate (130) configured to uniformly diffuse light. The diffuser plate (130) may be provided in front of the light source module (110) and the reflective sheet (120). The diffuser plate (130) may evenly disperse light emitted from the light source module (110) and then emit the light forward.

[0069] Referring to FIG. 2, the backlight unit (100) may include an optical sheet (140) that is provided to further improve the luminance and uniformity of the luminance of the emitted light. The optical sheet (140) may be provided to refract and scatter light emitted from the front surface of the diffusion plate (130). For example, the optical sheet (140) may include at least one of various types of sheets, such as a diffusion sheet, a prism sheet, a reflective polarizing sheet, and a quantum dot sheet. In other words, the optical sheet (140) may include a plurality of sheets.

[0070] The diffuser plate (130) and the optical sheet (140) may be referred to as optical members (130, 140).

[0071] The display device (1) may include a control assembly (50) that controls the operation of the backlight unit (100) and the display panel (20), and a power assembly (60) that supplies power to the backlight unit (100) and the display panel (20). The control assembly (50) and the power assembly (60) may be provided in the main body (11).

[0072] For example, the control assembly (50) may include a control circuit that controls the operation of the display panel (20) and the backlight unit (100). The control circuit may process image data received from an external content source, transmit the image data to the display panel (20), and transmit dimming data to the backlight unit (100).

[0073] For example, the power assembly (60) can supply power to the display panel (20) and the backlight unit (100) so that the backlight unit (100) outputs light and the display panel (20) blocks or passes light from the backlight unit (100).

[0074] The control assembly (50) and the power assembly (60) may be implemented as printed circuit boards and various circuits mounted on the printed circuit board. For example, the power circuit may include capacitors, coils, resistors, processors, etc., and a power circuit board on which these are mounted. In addition, the control circuit may include memory, a processor, and a control circuit board on which these are mounted.

[0075] Referring to FIG. 2, the display device (1) may include a rear chassis (15). The rear chassis (15) may cover the rear of the display panel (20). The rear chassis (15) may support various components of the display device (1), such as a backlight unit (100), a control assembly (50), and a power assembly (60).

[0076] The rear chassis (15) may be formed to have a roughly flat plate shape, but is not limited thereto. The rear chassis (15) may be formed of a material having high thermal conductivity so as to facilitate heat dissipation from the light source module (110) to the outside. For example, the rear chassis (15) may be formed of a metal material such as aluminum or SUS, or a plastic material such as ABS.

[0077] The display device (1) may include a middle mold (14). The middle mold (14) may be provided in a shape of a roughly square frame. The middle mold (14) may be placed in front of the rear chassis (15). The middle mold (14) may support at least some components of the backlight unit (100). The middle mold (14) may be provided to support a side surface of the display panel (20).

[0078] Referring to FIG. 2, the display device (1) may include a bottom cover (13). The bottom cover (13) may be coupled to the middle mold (14) to cover the lower surface of the middle mold (14). The bottom cover (13) may prevent the lower surface of the middle mold (14) from being exposed to the outside of the display device (1). The bottom cover (13) may form the lower surface of the display device (1).

[0079] The display device (1) may include a rear cover (16). The rear cover (16) may be positioned at the rear of the rear chassis (15). The rear cover (16) may cover the rear chassis (15) and various components mounted at the rear of the rear chassis (15) (e.g., a control assembly (50), a power assembly (60), etc.). The rear cover (16) may prevent the rear chassis (15) and various components mounted at the rear of the rear chassis (15) from being exposed to the rear of the display device (1). The rear cover (16) may form the rear of the display device (1).

[0080] The configuration of the display device (1) described above with reference to FIG. 2 is merely an example for explaining the display device according to the present disclosure, and the present disclosure is not limited thereto. The display device according to the present disclosure may be provided to include various configurations for performing the function of providing images through a screen.

[0081] FIG. 3 is an enlarged cross-section of a portion of a display module in a display device according to one or more embodiments.

[0082] Referring to FIG. 3, a display panel (20) of a display device (1) according to one or more embodiments may be configured as a liquid crystal display (LCD) panel. The display panel (20) may be configured to block or allow light emitted from a backlight unit (100) to pass through. By allowing the display panel (20) to block or allow light emitted from the backlight unit (100) to pass through, an image (I) may be formed in front of the display panel (20).

[0083] The front surface of the display panel (20) can form the screen (12) of the display device (1) described above. A plurality of pixels (P) can be provided on the display panel (20). The plurality of pixels (P) provided on the display panel (20) can independently block or transmit light from the backlight unit (100), and the light transmitted by the plurality of pixels (P) can form an image (I) displayed on the screen (12).

[0084] For example, as illustrated in FIG. 3, the display panel (20) may include a first polarizing film (21), a first transparent substrate (22), a pixel electrode (23), a thin film transistor (24), a liquid crystal layer (25), a common electrode (26), a color filter (27), a second transparent substrate (28), and a second polarizing film (29).

[0085] The first transparent substrate (22) and the second transparent substrate (28) can fix and support a pixel electrode (23), a thin film transistor (24), a liquid crystal layer (25), a common electrode (26), and a color filter (27). The first and second transparent substrates (22, 28) can be made of reinforced glass or transparent resin.

[0086] A first polarizing film (21) and a second polarizing film (29) may be provided on the outer side of the first and second transparent substrates (22, 28).

[0087] The first polarizing film (21) and the second polarizing film (29) can each transmit specific light and block other light. For example, the first polarizing film (21) transmits light having a magnetic field vibrating in a first direction and blocks other light. In addition, the second polarizing film (29) transmits light having a magnetic field vibrating in a second direction and blocks other light. At this time, the first direction and the second direction can be orthogonal to each other. Accordingly, the polarization direction of the light transmitted by the first polarizing film (21) and the vibration direction of the light transmitted by the second polarizing film (29) can be orthogonal to each other. As a result, light generally cannot simultaneously transmit through the first polarizing film (21) and the second polarizing film (29).

[0088] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0089] The color filter (27) may include, for example, a red filter (27R) that passes red light, a green filter (27G) that passes green light, and a blue filter (27G) that passes blue light, and the red filter (27R), the green filter (27G), and the blue filter (27B) may be arranged parallel to each other. The area where the color filter (27) is formed may correspond to the pixel (P) described above. The area where the red filter (27R) is formed may correspond to the red subpixel (PR), the area where the green filter (27G) is formed may correspond to the green subpixel (PG), and the area where the blue filter (27B) is formed may correspond to the blue subpixel (PB).

[0090] A pixel electrode (23) may be provided on the inner side of the first transparent substrate (22), and a common electrode (26) may be provided on the inner side of the second transparent substrate (28).

[0091] The pixel electrode (23) and the common electrode (26) are made of a metal material that conducts electricity, and can generate an electric field to change the arrangement of liquid crystal molecules (25a) that constitute the liquid crystal layer (25) to be described below.

[0092] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can transmit light incident from the outside. For example, the pixel electrode (23) and the common electrode (26) may be made of indium tin oxide (ITO), indium zinc oxide (IZO), silver nanowire, carbon nanotube (CNT), graphene, or PEDOT (3,4-ethylenedioxythiophene). A thin film transistor (TFT) (24) may be provided on the inside of the first transparent substrate (22).

[0093] The thin film transistor (24) can pass or block current flowing through the pixel electrode (23). For example, an electric field can be formed or removed between the pixel electrode (23) and the common electrode (26) depending on whether the thin film transistor (24) is turned on (closed) or turned off (open).

[0094] The thin film transistor (24) can be composed of polysilicon and can be formed by a semiconductor process such as lithography, deposition, or ion implantation.

[0095] A liquid crystal layer (25) may be formed between the pixel electrode (23) and the common electrode (26). The liquid crystal layer (25) may be filled with liquid crystal molecules (25a).

[0096] Liquid crystals exhibit a state intermediate between that of a solid (crystal) and a liquid. Most liquid crystal substances are organic compounds, and their molecular structure is elongated and rod-shaped. While the arrangement of these molecules resembles an irregular state in some directions, they can form regular crystals in other directions. As a result, liquid crystals can exhibit both the fluidity of a liquid and the optical anisotropy of a crystal (solid).

[0097] In addition, liquid crystals can exhibit optical properties depending on changes in the electric field. For example, the direction of the arrangement of molecules constituting the liquid crystal can change depending on changes in the electric field. When an electric field is generated in the liquid crystal layer (25), the liquid crystal molecules (25a) of the liquid crystal layer (25) can be arranged according to the direction of the electric field. When an electric field is not generated in the liquid crystal layer (25), the liquid crystal molecules (25a) can be arranged irregularly or along an alignment layer (not shown). As a result, the optical properties of the liquid crystal layer (25) can vary depending on the presence or absence of an electric field passing through the liquid crystal layer (25).

[0098] The structure of the display panel (20) described above with reference to FIG. 3 is only an example of the structure that the display panel of the display device according to the present disclosure may have, and the present disclosure is not limited thereto.

[0099] FIG. 4 illustrates a portion of a display device according to one or more embodiments. FIG. 5 illustrates an exploded view of a portion of the display device illustrated in FIG. 4.

[0100] Referring to FIGS. 4 and 5, a display device (1) according to one or more embodiments may include a reflective sheet (120) and a light source module (110) disposed on the reflective sheet (120). The light source module (110) may be positioned in front of the reflective sheet (120).

[0101] A display device (1) according to one or more embodiments may be arranged such that a reflective sheet (120) is disposed in front of a rear chassis (15), and a light source module (110) is disposed in front of the reflective sheet (120).

[0102] The light source module (110) of the display device (1) may include a light source substrate (112) positioned in front of a reflective sheet (120). The light source substrate (112) of the light source module (110) may be positioned in front of the reflective sheet (120).

[0103] The light source module (110) of the display device (1) may include a plurality of light sources (111) mounted on a light source substrate (112). As described above, the light source substrate (112) may have a bar shape extending in the left-right direction. The plurality of light sources (111) may be arranged spaced apart from each other in the left-right direction on the light source substrate (112).

[0104] The reflective sheet (120) may be positioned at the rear of the light source module (110). The reflective sheet (120) may include a mounting portion (121) on which the light source module (110) is mounted, and an inclined portion (122) provided along the edge of the mounting portion (121).

[0105] The inclined portion (122) may be provided to be inclined with respect to the mounting portion (121). The inclined portion (122) may be inclined with respect to the mounting portion (121) so that the reflective sheet (120) can correspond to the shape of the rear chassis (15). The inclined portion (122) may be inclined with respect to the mounting portion (121) so as to protrude forward from the mounting portion (121). In order for the rear chassis (15) to accommodate the light source module (110), a portion of the front of the rear chassis (15) may be recessed toward the rear. In order to correspond to the shape of the rear chassis (15), the reflective sheet (120) may include a mounting portion (121) corresponding to the recessed portion of the rear chassis (15), and an inclined portion (122) provided to be inclined with respect to the mounting portion (121).

[0106] The inclined portion (122) of the reflective sheet (120) may be designed to reduce brightness. Since the inclined portion (122) has a shape that protrudes forward relative to the mounting portion (121), the brightness at the inclined portion (122) may be higher than the brightness at the mounting portion (121). In the display device (1) according to one or more embodiments, the reflective sheet (120) may include a configuration or structure for reducing brightness at the inclined portion (122) to uniformize brightness. For example, black or similar color ink may be applied to the inclined portion (122) to reduce the brightness of the inclined portion (122).

[0107] According to one or more embodiments, the reflective sheet (120) may further include an outer portion (123) formed along the edge of the inclined portion (122) and arranged to contact the edge of the rear chassis (15). The outer portion (123) may be arranged to be approximately parallel to the mounting portion (121). The outer portion (123) may refer to a rectangular frame-shaped area forming the edge of the reflective sheet (120).

[0108] A display device (1) according to one or more embodiments may include a supporter (150) for maintaining a distance between a plurality of light sources (111) of a light source module (110) and optical members (130, 140). The supporter (150) may be disposed on a reflective sheet (120). The supporter (150) may be disposed between the reflective sheet (120) and the optical members (130, 140). The supporter (150) may support components disposed in front of the light source module (110). For example, the supporter (150) may support a diffusion plate (130) and / or an optical sheet (140).

[0109] The supporter (150) can maintain the optical characteristics of the display device (1) by maintaining the optical distance (OD) between the plurality of light sources (111) of the light source module (110) and the optical members (130, 140). To this end, the supporter (150) can be provided to have a thickness corresponding to the optical distance (OD) at which the backlight unit (100) can maintain the optical characteristics. The thickness of the supporter (150) can refer to the length of the supporter (150) in the front-back direction or the X direction.

[0110] Referring to FIGS. 4 and 5, a light source module (110) of a display device (1) according to one or more embodiments may be mounted on a rear chassis (15). A light source substrate (112) of the light source module (110) may be detachably mounted on the rear chassis (15).

[0111] The rear chassis (15) may include a module mounting portion (15a) for mounting a light source module (110). The module mounting portion (15a) may protrude forward from the front of the rear chassis (15).

[0112] The reflective sheet (120) of the display device (1) can be accommodated in the rear chassis (15). The reflective sheet (120) can include a first opening (126) formed to allow the module mounting portion (15a) of the rear chassis (15) to pass through. The first opening (126) can be formed to penetrate the reflective sheet (120). When the reflective sheet (120) is mounted on the rear chassis (15), the module mounting portion (15a) can pass through the first opening (126) and protrude forward of the reflective sheet (120). The module mounting portion (15a) can pass through the first opening (126) to be coupled with the light source substrate (112).

[0113] Referring to FIG. 5, the rear chassis (15) may include a supporter mounting portion (15b) so that a supporter (150) may be mounted to the rear chassis (15). The supporter mounting portion (15b) may protrude forward from the front of the rear chassis (15).

[0114] Referring to FIG. 5, the reflective sheet (120) may include a second opening (127) formed to allow the supporter mounting portion (15b) of the rear chassis (15) to pass through. The second opening (127) may be formed to penetrate the reflective sheet (120). When the reflective sheet (120) is mounted on the rear chassis (15), the supporter mounting portion (15b) may pass through the second opening (127) and protrude forward of the reflective sheet (120).

[0115] Fig. 6 is an enlarged view of area A of Fig. 4. Fig. 7 is an enlarged view of area A of Fig. 4, showing the appearance before the fixing member fixes the reflective sheet to the rear chassis. Fig. 8 shows the rear of the area shown in Fig. 6. Fig. 9 shows a cross-section taken along line BB' of Fig. 6.

[0116] Referring to FIG. 6, a display device (1) according to the present disclosure may include a rear chassis (15) having a fixing hole (151) and a fixing member (160) provided to fix a reflective sheet (120) to the rear chassis (15).

[0117] The fixing hole (151) may be formed by penetrating the rear chassis (15). The fixing hole (151) may include a first fixing hole (152) and a second fixing hole (154) formed to be spaced apart from the first fixing hole (153). The first fixing hole (153) and the second fixing hole (154) may be spaced apart from each other by a predetermined distance in the left-right direction, horizontal direction, or Y direction.

[0118] The rear chassis (15) may include a plurality of fixing holes, each of which is a pair of fixing holes (151) spaced apart from each other, such as the first fixing hole (152) and the second fixing hole (153) described above. In other words, the rear chassis (15) may include a plurality of pairs of fixing holes (151).

[0119] Referring to FIGS. 4 and 6, in a display device (1) according to one or more embodiments, a plurality of pairs of fixing holes (151) may be formed at positions corresponding to the inclined portion (122) of the reflective sheet (120).

[0120] Referring to FIGS. 6 to 8, the fixing hole (151) may be formed in a circular shape, but is not limited thereto. The fixing hole (151) may be formed in a square shape or may be formed to have various shapes such as a polygon or an ellipse.

[0121] The display device (1) may include a fixing member (160) that is provided to fix the reflective sheet (120) to the rear chassis (15). The fixing member (160) may be provided to penetrate the reflective sheet (120) and then be coupled to the rear chassis (15). As the fixing member (160) penetrates the reflective sheet (120), a through hole may be formed in the reflective sheet (120) into which at least a portion of the fixing member (160) is inserted.

[0122] Referring to FIG. 6, FIG. 8 and FIG. 9, the fixing member (160) may include an insertion portion that is provided to be inserted into a fixing hole (151) through a reflective sheet (120), and a bending portion that is bent at an end of the insertion portion. The bending portion is provided so as not to pass through the fixing hole (151), thereby preventing the insertion portion inserted into the fixing hole (151) from being pulled out from the fixing hole (151).

[0123] Specifically, the fixing member (160) may include a first insertion portion (161) that is provided to be inserted into a first fixing hole (152) of the rear chassis (15) by penetrating the inclined portion (122) of the reflective sheet (120), and a second insertion portion (162) that is provided to be inserted into a second fixing hole (153) of the rear chassis (15) by penetrating the inclined portion (122) of the reflective sheet (120). The first insertion portion (161) and the second insertion portion (162) may extend approximately in the front-rear direction or the X direction.

[0124] Referring to FIG. 9, as the fixing member (160) penetrates the reflective sheet (120), a first penetration hole (120b) into which a first insertion portion (161) is inserted can be formed in the reflective sheet (120). As the fixing member (160) penetrates the reflective sheet (120), a second penetration hole (120a) into which a second insertion portion (162) is inserted can be formed in the reflective sheet (120).

[0125] The fixing member (160) may include a first bent portion (163) that is bent at one end (e.g., the first end) of the first insertion portion (161), and a second bent portion (164) that is bent at one end (e.g., the first end) of the second insertion portion (162). The first bent portion (163) may be bent toward the second fixing hole (153). The second bent portion (164) may be bent toward the first fixing hole (152). In other words, the first bent portion (163) and the second bent portion (164) may be bent in a direction that brings them closer to each other.

[0126] The fixed member (160) may include a connecting portion (165) connecting the other end (e.g., the second end) of the first insertion portion (161) and the other end (e.g., the second end) of the second insertion portion (162). The connecting portion (165) may extend approximately in the left-right direction, the horizontal direction, or the Y direction.

[0127] Referring to FIGS. 6 and 8, the connecting portion (165) of the fixing member (160) may be positioned in front of the reflective sheet (120). The first bend portion (163) and the second bend portion (164) may be positioned in the rear of the reflective sheet (120) and the rear chassis (15). By positioning the connecting portion (165) in front of the reflective sheet (120), the reflective sheet (120) may have more uniform brightness. In order for the connecting portion (165) to be positioned in front of the reflective sheet (120), as will be described later, the fixing member (160) may be coupled to the rear chassis (15) in front of the reflective sheet (120).

[0128] Referring to Fig. 9, a predetermined first gap (g1) may be formed between the first insertion portion (161) and the inner edge of the first fixing hole (152). A predetermined second gap (g2) may be formed between the second insertion portion (162) and the inner edge of the second fixing hole (153). In Fig. 9, the first gap (g1) and the second gap (g2) are formed to be substantially the same, but this is not limited thereto. The first gap (g1) may be larger than the second gap (g2) or smaller than the second gap (g2). In other words, the first gap (g1) and the second gap (g2) may be formed differently from each other.

[0129] Referring to FIG. 9, the length (l1) along which the first bent portion (163) extends from one end of the first insertion portion (161) may be set to be greater than the first gap (g1). The length (l2) along which the second bent portion (164) extends from one end of the second insertion portion (162) may be set to be greater than the second gap (g2). The length (l1) along which the first bent portion (163) extends and the length (l2) along which the second bent portion (164) extends may be set to be substantially the same. The length (l1) along which the first bent portion (163) extends may be set to be greater than the sum of the first gap (g1) and the second gap (g2). Similarly, the length (l2) along which the second bent portion (164) extends may be set to be greater than the sum of the first gap (g1) and the second gap (g2).

[0130] When the reflective sheet (120) contracts and expands, the fixing member (160) can move in the up, down, left, and right directions within a predetermined range due to the contraction and expansion of the reflective sheet (120). Specifically, the first insertion portion (161) of the fixing member (160) can move within the first fixing hole (152), and the second insertion portion (162) of the fixing member (160) can move within the second fixing hole (153).

[0131] In the process of moving the fixing member (160) due to the contraction and expansion of the reflective sheet (120), the first insertion portion (161) may come into contact with one side of the first fixing hole (152) or the second insertion portion (162) may come into contact with one side of the second fixing hole (153). At this time, the size of one of the first gap (g1) and the second gap (g2) may become zero (0), and the size of the other one of the first gap (g1) and the second gap (g2) may become g1 + g2. As described above, since the length (l1) to which the first bend (163) extends is set to be greater than g1 + g2, even if the size of the first gap (g1) becomes g1 + g2 when the second insertion portion (162) comes into contact with one side of the second fixing hole (153), the first bend (163) may not be pulled out from the first fixing hole (152). Similarly, since the length (l2) to which the second bend (164) extends is set to be greater than g1 + g2, even if the size of the second gap (g2) becomes g1 + g2 when the first insertion portion (161) comes into contact with one side of the first fixing hole (152), the second bend (164) may not be pulled out from the second fixing hole (153).

[0132] According to the present disclosure, when the reflective sheet (120) is fixed to the rear chassis (15) by the fixing member (160) penetrating the reflective sheet (120), the reflective sheet (120) can be provided to be movable within a range in which the fixing member (160) can move. Since the reflective sheet (120) is provided to be movable within a predetermined range without being fixed to a certain position, it is possible to prevent wrinkles from being formed in the reflective sheet (120) due to shrinkage and expansion of the reflective sheet (120). In other words, it is possible to prevent a sheet movement phenomenon due to shrinkage and expansion of the reflective sheet (120).

[0133] Referring to FIG. 7, the fixing member (160) before being coupled to the rear chassis (15) by penetrating the reflective sheet (120) may include a connecting portion (165), a third bend portion (166) formed by bending one end of the connecting portion (165) toward the front, and a fourth bend portion (167) formed by bending the other end of the connecting portion (165) toward the front.

[0134] The fixed member (160) can be joined to the rear chassis (15) by having the third bend portion (166) and the fourth bend portion (167) each pass through the inclined portion (122) of the reflective sheet (120), and then bending the third bend portion (166) and the fourth bend portion (167) in a direction in which they approach each other. This may be the same as or similar to the joining method of a widely known stapler.

[0135] According to the present disclosure, the reflective sheet (120) can be fixed to the rear chassis (15) by a fixing member (160) having substantially the same structure as a commercial stapler. After providing a jig having the same or similar structure as a staple gun that is arranged to automatically fire a stapler, the reflective sheet (120) can be fixed to the rear chassis (15) by firing the fixing member (160) from the jig toward the reflective sheet (120). According to the present disclosure, since automation for fixing the reflective sheet (120) to the rear chassis (15) is easy, assembly and productivity can be improved, and a display device (1) having uniform quality can be provided.

[0136] FIG. 10 illustrates a rear chassis and a reflective sheet fixed to the rear chassis in a display device according to one or more embodiments. FIG. 11 illustrates an enlarged view of area C of FIG. 10.

[0137] Referring to FIGS. 10 and 11, in a display device (1) according to one or more embodiments, a fixing hole (151) of a rear chassis (15) may be formed at a position corresponding to an outer portion (123) of a reflective sheet (120).

[0138] The rear chassis (15) may include a plurality of fixing holes, each of which is a pair of fixing holes (151) spaced apart from each other, such as a first fixing hole (152) and a second fixing hole (153), as a single unit. The rear chassis (15) may include a plurality of pairs of fixing holes (151). The plurality of pairs of fixing holes (151) may be formed by penetrating the rear chassis (15). The plurality of pairs of fixing holes (151) may be formed at a position corresponding to the outer portion (123) of the reflective sheet (120) mounted on the rear chassis (15).

[0139] The fixing member (160) can be connected to the rear chassis (15) after penetrating the outer portion (123) of the reflective sheet (120). The structure and method of connecting the fixing member (160) to the rear chassis (15) by penetrating the reflective sheet (120) are the same as described above, so a duplicate description is omitted.

[0140] According to one or more embodiments, some of the plurality of fixing holes of the rear chassis (15) may be formed at positions corresponding to the inclined portion (122) of the reflective sheet (120), and the remaining portions of the plurality of fixing holes may be formed at positions corresponding to the outer portion (123) of the reflective sheet (120). In this case, some of the plurality of fixing members (160) may be coupled to the rear chassis (15) by penetrating the inclined portion (122) of the reflective sheet (120), and the remaining portions of the plurality of fixing members (160) may be coupled to the rear chassis (15) by penetrating the outer portion (123) of the reflective sheet (120).

[0141] A display device according to one or more embodiments includes a display panel, a reflective sheet arranged to reflect light toward the display panel from a rear side of the display panel, a rear chassis arranged to support the reflective sheet from a rear side of the reflective sheet, the rear chassis having a fixing hole, and a fixing member arranged to fix the reflective sheet to the rear chassis. The fixing member includes an insertion portion arranged to penetrate the reflective sheet and be inserted into the fixing hole, and a bending portion bent at a first end of the insertion portion so that the insertion portion is not pulled out from the fixing hole.

[0142] The above reflective sheet may include a through hole into which the insert is inserted.

[0143] The above through hole can be formed by the insertion portion penetrating the reflective sheet.

[0144] The above-mentioned fixing hole may include a first fixing hole and a second fixing hole spaced apart from the first fixing hole.

[0145] The above fixing member may further include a first insertion portion provided to be inserted into the first fixing hole through the reflective sheet, a second insertion portion provided to be inserted into the second fixing hole through the reflective sheet, a first bend portion bent at a first end of the first insertion portion, and a second bend portion bent at a first end of the second insertion portion.

[0146] The above first bending portion can be bent toward the second fixing hole.

[0147] The above second bending portion can be bent toward the first fixing hole.

[0148] The above-mentioned fixed member may further include a connecting portion connecting the second end of the first insertion portion and the second end of the second insertion portion.

[0149] The above connecting portion may be placed at the front of the reflective sheet.

[0150] The first bending portion and the second bending portion may be arranged at the rear of the reflective sheet and the rear chassis.

[0151] A predetermined first gap may be formed between the first insertion portion and the inner edge of the first fixing hole.

[0152] A predetermined second gap may be formed between the second insertion portion and the inner edge of the second fixing hole.

[0153] The length of the above first bending portion may be set to be greater than the above first gap.

[0154] The length of the second bending portion may be set to be greater than the second gap.

[0155] The display device may further include a light source module arranged to supply light to the display panel from the rear of the display panel.

[0156] The above reflective sheet may include a mounting portion provided to mount the light source module, and an inclined portion inclined with respect to the mounting portion along the edge of the mounting portion.

[0157] The above-mentioned fixed hole may correspond to the above-mentioned inclined portion.

[0158] The above reflective sheet may further include an outer portion formed along the edge of the inclined portion and arranged to contact the edge of the rear chassis.

[0159] The above-mentioned fixed hole may correspond to the above-mentioned outer portion.

[0160] The inclined portion may be darker than the settling portion, such that the luminance at the inclined portion is lower than the luminance at the settling portion.

[0161] The display device may further include an optical member disposed between the display panel and the reflective sheet, and a supporter disposed on the reflective sheet and provided to support the optical member.

[0162] The above-mentioned fixing member may include at least one of stainless steel and paper.

[0163] The above insertion portion is provided to be movable within the fixing hole and can be movable within a predetermined range with respect to the rear chassis.

[0164] A display device according to one or more embodiments includes a display panel, a light source module configured to supply light to the display panel, a reflective sheet arranged at the rear of the display panel and the light source module to reflect the light, a rear chassis configured to support the reflective sheet and the light source module at the rear of the reflective sheet and having a first fixing hole and a second fixing hole, and a fixing member configured to fix the reflective sheet to the rear chassis. The above fixing member includes a first insertion portion provided to be inserted into the first fixing hole through the reflective sheet, a second insertion portion provided to be inserted into the second fixing hole through the reflective sheet, a connecting portion connecting one end of the first insertion portion and one end of the second insertion portion, a first bend portion bent at the other end of the first insertion portion so that the first insertion portion is not pulled out from the first fixing hole, and a second bend portion bent at the other end of the second insertion portion so that the second insertion portion is not pulled out from the second fixing hole.

[0165] The above connecting portion may be placed at the front of the reflective sheet.

[0166] The first bending portion and the second bending portion may be positioned at the rear of the rear chassis.

[0167] A predetermined first gap can be formed between the first insertion portion and the first fixing hole.

[0168] A predetermined second gap may be formed between the second insertion portion and the second fixing hole.

[0169] The length by which the above first bending portion extends may be set to be greater than the above first gap.

[0170] The length by which the above second bending portion extends may be set to be greater than the above second gap.

[0171] According to the invention, a display device with improved assembly can be provided.

[0172] According to the invention, productivity is improved by automating the fixing of a reflective sheet, and a display device having uniform quality can be provided.

[0173] According to the invention, a display device can be provided that can prevent wrinkles from forming on a reflective sheet due to shrinkage and expansion of the reflective sheet.

[0174] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. Display panel; A reflective sheet provided to reflect light toward the display panel from the rear of the display panel; A rear chassis provided to support the reflective sheet at the rear of the reflective sheet, the rear chassis having a fixing hole; and A fixing member provided to fix the reflective sheet to the rear chassis; The above fixed member is, An insertion portion provided to penetrate the above reflective sheet and be inserted into the above fixing hole, A display device including a bending portion that is bent at a first end of the insertion portion so that the insertion portion is not pulled out of the fixing hole.

2. In paragraph 1, The above reflective sheet includes a through hole into which the insert is inserted, A display device in which the above through hole is formed by the insertion part penetrating the reflective sheet.

3. In paragraph 1, The above fixing hole is a display device including a first fixing hole and a second fixing hole spaced apart from the first fixing hole.

4. In paragraph 3, The above fixed member is, A first insertion portion provided to penetrate the above reflective sheet and be inserted into the first fixing hole; A second insertion portion provided to penetrate the reflective sheet and be inserted into the second fixing hole; A first bending portion that is bent at the first end of the first insertion portion and A display device further comprising a second bending portion that is bent at the first end of the second insertion portion.

5. In paragraph 4, The above first bending portion is bent toward the second fixing hole, A display device in which the second bending portion is bent toward the first fixing hole.

6. In paragraph 4, The above fixed member further includes a connecting portion connecting the second end of the first insertion portion and the second end of the second insertion portion, The above connecting portion is placed in front of the above reflective sheet, A display device in which the first bending portion and the second bending portion are positioned at the rear of the reflective sheet and the rear chassis.

7. In paragraph 4, A predetermined first gap is formed between the first insertion portion and the inner edge of the first fixing hole, A display device in which a predetermined second gap is formed between the second insertion portion and the inner edge of the second fixing hole.

8. In paragraph 7, The length of the first bend is set to be greater than the first gap, A display device in which the length of the second bending portion is provided to be greater than the second gap.

9. In paragraph 1, Further comprising a light source module arranged to supply light to the display panel from the rear of the display panel; The above reflective sheet, A mounting portion provided to allow the above light source module to be mounted, A display device including an inclined portion inclined relative to the mounting portion along the edge of the mounting portion.

10. In paragraph 9, The above fixing hole is a display device corresponding to the above inclined portion.

11. In paragraph 9, The above reflective sheet further includes an outer portion formed along the edge of the inclined portion and arranged to contact the edge of the rear chassis, The above fixing hole is a display device corresponding to the above outer part.

12. In paragraph 9, A display device in which the luminance at the inclined portion is lower than the luminance at the mounting portion, and the inclined portion is darker than the mounting portion.

13. In paragraph 1, An optical member disposed between the display panel and the reflective sheet; and A display device further comprising a supporter disposed on the reflective sheet and provided to support the optical member.

14. In paragraph 1, A display device wherein the above fixing member comprises at least one of stainless steel and paper.

15. In paragraph 1, A display device in which the insertion portion is provided to be movable within the fixing hole and is movable within a predetermined range relative to the rear chassis.

Images