Display apparatus

Abstract

This display device comprises: a display panel for displaying an image in a first direction which is the forward direction; a chassis disposed behind the display panel; a rear cover for covering the rear of the chassis; a speaker module including a diaphragm facing a second direction orthogonal to the first direction; and a holder for fixing the speaker module to the rear cover so that the speaker module is disposed between the chassis and the rear cover, wherein the holder and the rear cover are in contact with each other and sealed in the first direction, and are positioned in the opposite direction to the second direction with respect to the diaphragm and form a chamber.

Description

Display device

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

[0002] A display device is a type of output device that converts acquired or stored electrical information into visual information and displays it to a user, and is configured to output not only visual information but also sound information.

[0003] A display device may include speakers for outputting audio information. Generally, speakers are placed on the rear or side of the display device, and these speakers can be a factor in increasing the thickness of the display device.

[0004] Display devices are becoming thinner, and it is necessary to reduce the thickness of the speakers to reduce the overall thickness of the display device. However, if the thickness of the speakers is reduced, it is difficult to secure sufficient space for driving the speakers, which may lead to a decrease in acoustic performance.

[0005] Accordingly, various attempts are being made to develop speakers and display devices containing them that can provide excellent acoustic performance while reducing thickness.

[0006] One aspect of the present disclosure provides a speaker capable of providing excellent acoustic performance while reducing thickness, and a display device including the same.

[0007] The technical problems to be solved in this document are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] A display device according to the present disclosure comprises a display panel that displays an image in a first direction forward, a chassis disposed behind the display panel, a rear cover covering the rear of the chassis, a speaker module including a diaphragm facing a second direction orthogonal to the first direction, and a holder that fixes the speaker module to the rear cover so as to be disposed between the chassis and the rear cover, wherein the holder and the rear cover are formed by sealing the holder and the rear cover in contact with each other in the first direction, and are positioned opposite to the second direction with respect to the diaphragm to form a chamber.

[0009] One aspect of the present disclosure can provide excellent acoustic performance by forming an enclosure of a speaker module through a rear cover without separate additional configuration.

[0010] FIG. 1 is a perspective view of a display device according to one embodiment.

[0011] FIG. 2 is a drawing showing the back side of a display device according to one embodiment.

[0012] FIG. 3 is a cross-sectional view of a display panel in a display device according to one embodiment.

[0013] FIG. 4 is a drawing showing the rear cover of a display device according to one embodiment in a disassembled state.

[0014] FIG. 5 is an exploded perspective view of a part of a display device according to one embodiment.

[0015] FIG. 6 is a drawing showing a part of the back surface of a display device according to one embodiment, in which the rear cover is shown transparently.

[0016] FIG. 7 is a drawing illustrating a part of the configuration of a display device according to one embodiment.

[0017] FIG. 8 is a drawing showing a part of the rear cover of a display device according to one embodiment.

[0018] FIG. 9 is a drawing showing a part of the back surface of a display device according to one embodiment, in which the rear cover is shown transparently.

[0019] The embodiments described in this specification and the configurations illustrated in the drawings are merely preferred examples of the disclosed invention, and various modifications that may replace the embodiments and drawings of this specification may exist at the time of filing this application.

[0020] Additionally, the same reference numerals or symbols presented in each drawing of this specification represent parts or components that perform substantially the same function.

[0021] Additionally, the singular form of the noun corresponding to the item may include one or multiple items, unless the relevant context clearly indicates otherwise.

[0022] Additionally, in this document, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0023] Additionally, the terms "part," "module," and "component" may be implemented in hardware or software. Depending on the embodiments, a plurality of "parts," "modules," and "components" may be implemented as a single component, or a single "part," "module," or "component" may include a plurality of components.

[0024] Furthermore, the terms used in this specification are for describing embodiments and are not intended to limit or / or restrict the disclosed invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and do not preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0025] Additionally, terms including ordinal numbers, such as "first," "second," etc., used herein may be used to describe various components, but said components are not limited by said terms, and said terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and / or" includes a combination of a plurality of related described items or any one of a plurality of related described items.

[0026] Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0027] When it is said that a component is "connected," "combined," "supported," or "in contact" with another component, this includes not only cases where the components are directly connected, combined, supported, or in contact, but also cases where they are indirectly connected, combined, supported, or in contact through a third component.

[0028] When it is said that a component is located "on" another component, this includes not only cases where one component is in contact with the other, but also cases where another component exists between the two components.

[0029] Meanwhile, terms such as "up / down direction" and "front / back direction" 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 refer to the +X direction and -X direction, respectively, as depicted in the drawings. The terms "up" and "down" below may refer to the +Z direction and -Z direction, respectively, as depicted in the drawings. The terms "left direction" and "right direction" below may refer to the +Y direction and -Y direction, respectively, as depicted in the drawings. The term "vertical direction" below may refer to the Z direction, respectively, as depicted in the drawings, and the term "horizontal direction" below may refer to the Y direction, respectively, as depicted in the drawings.

[0030] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0031] FIG. 1 is a perspective view of a display device according to one embodiment, FIG. 2 is a rear view of a display device according to one embodiment, FIG. 3 is a cross-sectional view of a display panel in a display device according to one embodiment, and

[0032] Referring to FIG. 1, the display device (10) is a device capable of processing a video signal received from the outside and visually displaying the processed video. In the following examples, the display device (10) is exemplified as a television (TV), but is not limited thereto. For example, the display device (10) can be implemented in various forms such as a monitor, a portable multimedia device, a portable communication device, etc., and the form of the display device (10) is not limited as long as it is a device that visually displays video.

[0033] A display device (10) can receive content data including video data and audio data from various content sources and output video and audio corresponding to the video data and audio data. For example, the display device (10) can receive content data through a broadcast receiving antenna or a wired cable, receive content data from a content playback device, or receive content data from a content provider's content provision server.

[0034] The display device (10) may include a display panel (20) that displays an image in the front (+X). The front (=) may also be referred to as the first direction (X) below.

[0035] The display device (10) may include a front chassis (30) configured to cover at least a portion of the side and front of the display panel (20).

[0036] According to one embodiment, the display device (10) may include a non-emissive panel. For example, the display device (10) may include a display panel (20) and a backlight unit provided to provide light to the display panel (20). For example, the display panel (20) may be a liquid crystal panel. The liquid crystal panel may be configured to block or allow light from the backlight unit to pass through. The backlight unit may be positioned behind the liquid crystal panel to provide light to the liquid crystal panel. The liquid crystal panel may receive light from the backlight unit to form a screen of the display device. For example, the display device (10) may include a backlight unit, a quantum dot layer, a liquid crystal panel, and a color filter.

[0037] According to one embodiment, the display device (10) may include a self-emissive panel. In this case, the display panel (20) may be configured to emit light on its own and may not include a backlight unit that provides light to the display panel (20). For example, the display panel (20) may be an Organic Light Emitting Diode (OLED) panel. For example, the display panel (20) may be a Micro LED panel in which the size of the light-emitting diode is less than 100 micrometers (μm).

[0038] The front chassis (30) may be provided to cover the side of the display panel (20). The front chassis (30) may be provided to cover at least a portion of the front of the display panel (20). Specifically, the front chassis (30) may be provided to cover the edge of the front of the display panel (20). The front portion of the front chassis (30) exposed to the front of the display device (10) may be referred to as a bezel.

[0039] The front chassis (30) may be formed to extend along the perimeter of the display panel (20). The front chassis (30) may be provided in the shape of a roughly square ring. The front chassis (30) protects the display panel (20) by covering at least a portion of the side and front of the display panel (20) and may form the side exterior of the display device (10). Additionally, the front chassis (30) may form a portion of the front exterior of the display device (10).

[0040] Referring to FIG. 2, 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).

[0041] 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). These first and second transparent substrates (22, 28) may be composed of reinforced glass or a transparent resin.

[0042] 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).

[0043] The first polarizing film (21) and the second polarizing film (29) can each pass specific light and block other light. For example, the first polarizing film (21) passes light having a magnetic field vibrating in one direction and blocks other light. Additionally, the second polarizing film (29) passes light having a magnetic field vibrating in a direction orthogonal to one direction and blocks other light. Accordingly, the polarization direction of the light passed by the first polarizing film (21) and the vibration direction of the light passed by the second polarizing film (29) can be orthogonal to each other. As a result, light generally cannot pass through the first polarizing film (21) and the second polarizing film (29) simultaneously.

[0044] A color filter (27) may be provided on the inner side of the second transparent substrate (28).

[0045] 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 side by side. The area where the color filter (27) is formed may correspond to a pixel of the display panel (20). The area where the red filter (27R) is formed may correspond to a red subpixel. The area where the green filter (27G) is formed may correspond to a green subpixel. The area where the blue filter (27B) is formed may correspond to a blue subpixel.

[0046] 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).

[0047] The pixel electrode (23) and the common electrode (26) are made of an electrically conductive metal material and can generate an electric field to change the arrangement of liquid crystal molecules (25a) constituting the liquid crystal layer (25) described below.

[0048] The pixel electrode (23) and the common electrode (26) are made of a transparent material and can pass 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 (Ag nano wire), carbon nanotube (CNT), graphene, or PEDOT (3,4-ethylenedioxythiophene). A thin film transistor (TFT) (24) may be provided on the inner side of the first transparent substrate (22).

[0049] The thin-film transistor (24) can pass or block the current flowing through the pixel electrode (23). For example, depending on the turn-on (closed) or turn-off (open) of the thin-film transistor (24), an electric field can be formed or removed between the pixel electrode (23) and the common electrode (26).

[0050] The thin film transistor (24) can be made of polysilicon and can be formed by semiconductor processes such as lithography, deposition, and ion implantation.

[0051] 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).

[0052] Liquid crystals represent an intermediate state between solids (crystals) and liquids. Most liquid crystal materials are organic compounds with molecular shapes resembling long, slender rods; while the arrangement of molecules appears irregular in some directions, it can take on a regular crystalline form in others. As a result, liquid crystals can possess both the fluidity of liquids and the optical anisotropy of crystals (solids).

[0053] Additionally, the liquid crystal can exhibit optical properties depending on changes in the electric field. For example, the direction of the molecular arrangement 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, and when no electric field is 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).

[0054] The structure of the display panel (20) described above with reference to FIG. 2 is merely an example of a structure that the display panel of the display device according to the present disclosure may have, and the present disclosure is not limited thereto.

[0055] Referring to FIG. 3, the display device (10) may include a display panel (20) and a rear cover (40) provided to cover the rear of the rear chassis (50) to be described later.

[0056] The rear cover (40) may be provided to cover the rear of the display panel (20). The rear cover (40) may be positioned at the rear of the display panel (20). The rear cover (40) may be provided with a size and shape corresponding to the display panel (20).

[0057] Below, the speaker module (100) and holder (110) placed between the rear chassis (50) and the rear cover (40) will be described in detail.

[0058] FIG. 4 is a drawing showing a disassembled state of the rear cover of a display device according to one embodiment, FIG. 5 is an exploded perspective view of a part of the components of a display device according to one embodiment, and FIG. 6 is a drawing showing a part of the rear surface of a display device according to one embodiment, in which the rear cover is shown transparently.

[0059] The rear chassis (50) and rear cover (40) shown in FIGS. 4 to 6 are depicted only in a portion adjacent to the speaker module (100) and holder (110) in the overall configuration for convenience of explanation.

[0060] As illustrated in FIGS. 4 to 6, the display device (10) may include a rear chassis (50). The rear chassis (50) may be positioned behind the display panel (20). If the display device (10) includes a backlight unit, the rear chassis (50) may support the backlight unit. If the display device (10) does not include a backlight unit, the rear chassis (50) may support the display panel (20). Additionally, the rear chassis (50) may support various components of the display device (10), such as a control assembly and a power assembly.

[0061] The rear chassis (50) may be formed to have a roughly flat plate shape, but is not limited thereto. The rear chassis (50) may be constructed to include a material with high thermal conductivity to facilitate heat dissipation to the outside. For example, the rear chassis (50) may be constructed to include a metal material such as aluminum or SUS, or a plastic material such as ABS.

[0062] The rear cover (40) may be provided to be attached to the rear chassis (50) in a first direction (X) from the rear (-X) of the rear chassis (50). The rear (-X) may also be referred to as the opposite direction (-X) of the first direction (X).

[0063] The display device (10) may include a speaker module (100) configured to output audio corresponding to audio data. The speaker module (100) may be positioned at the rear of the display panel (20). The speaker module (100) may be positioned at the rear of the rear chassis (50). The speaker module (100) may be positioned between the rear chassis (50) and the rear cover (40) in the opposite direction (-X) of the first direction.

[0064] A plurality of speaker modules (100) may be provided. Since the plurality of speaker modules (100) are all provided with the same configuration, one speaker module (100) and a part of the corresponding holder (110) and rear cover (40) will be described below.

[0065] The speaker module (100) may be configured to convert an electrical signal into sound. The speaker module (100) may be provided to generate sound. The speaker module (100) may include a diaphragm (101) provided to receive an electrical signal and vibrate.

[0066] The speaker module (100) can generate sound by moving the diaphragm (101).

[0067] For example, a speaker module (100) may include a fixed plate positioned at the center of a diaphragm (101), a magnet, a voice coil, and other components.

[0068] The speaker module (100) can be positioned so that the diaphragm (101) faces downward (-Z) of the display device (10). Accordingly, the speaker module (100) can be configured to radiate sound downward (-Z) of the display device (10).

[0069] The display device (10) may include a holder (110) provided so that the speaker module (100) is positioned between the rear chassis (50) and the rear cover (40).

[0070] The holder (110) may be provided to be fixed to the rear chassis (50) of the speaker module (100).

[0071] The holder (110) may be provided to be coupled to the rear of the rear chassis (50) so that the speaker module (100) is placed on the rear of the rear chassis (50). The holder (110) may be provided so that the speaker module (100) is seated and so that the speaker module (100) is placed on the rear of the rear chassis (50).

[0072] The holder (110) can support the speaker module (100) so that the diaphragm (101) of the speaker module (100) faces downward (-Z) of the display device (10).

[0073] The holder (110) may include a seating portion (111) on which the speaker module (100) is seated.

[0074] The mounting portion (111) can be provided so that the speaker module (100) is mounted on the holder (110) in the first direction (X) from the opposite direction (-X) of the first direction.

[0075] The mounting portion (111) may be provided as a part of a holder (110) on which the speaker module (100) is mounted so that the speaker module (100) is placed on the rear of the rear chassis (50).

[0076] The rear cover (40) can cover the speaker module (100) so that the speaker module (100) is not exposed to the outside in the opposite direction (-X) of the first direction.

[0077] When the rear cover (40) is attached at the rear (-X) of the rear chassis (50), the speaker module (100) and holder (110) placed at the rear of the rear chassis (50) can be covered so that the speaker module (100) and holder (110) are not exposed in the opposite direction (-X) of the first direction.

[0078] The rear cover (40) may include an outlet (41) provided to allow sound waves radiated from the diaphragm (101) to move outside the display device (10).

[0079] The outlet (41) can be positioned at a location corresponding to the diaphragm (101).

[0080] The outlet (41) can be provided to open from the bottom of the rear cover (40) to the lower (-Z) of the rear cover (40).

[0081] In the case of a typical speaker module, the speaker module is inserted into an enclosure to block forward waves radiated forward of the diaphragm and backward waves radiated backward of the diaphragm from each other, thereby improving the acoustic performance of the speaker module.

[0082] However, in the case of the display device, the enclosure configuration into which the speaker module is inserted was excluded from the display device in consideration of slimming the display device and manufacturing efficiency; consequently, a problem occurred in which the forward and backward waves generated by the speaker module interfered, resulting in degraded acoustic performance.

[0083] In other words, since there is no configuration to separate the forward waves radiated forward of the diaphragm from the backward waves radiated backward of the diaphragm, the forward and backward waves interfere with and cancel each other out, causing the sound generated by the speaker module to cancel out and degrading the acoustic performance of the speaker module.

[0084] To prevent this, the holder (110) and rear cover (40) of the display device (10) according to one embodiment may be provided to form a chamber (120) that performs a function corresponding to a general enclosure.

[0085] The display device (10) may include a chamber (120), which is a space formed by a holder (110) and a rear cover (40).

[0086] The holder (110) and the rear cover (40) can form a chamber (120) space that is sealed by being joined in the first direction (X).

[0087] The chamber (120) can be located at the rear of the speaker module (100) in the opposite direction (Z) to the direction (-Z) in which the diaphragm (101) is facing.

[0088] The chamber (120) may be positioned at the rear of the speaker module (100) or above the speaker module (100) in the display device (10).

[0089] The holder (110) may include a first chamber portion (112) that forms part of the chamber (120).

[0090] The rear cover (40) may include a second chamber portion (42) that forms another part of the chamber (120).

[0091] The first chamber section (112) and the second chamber section (42) can form a chamber (120) by forming a space that is sealed from the outside in the first direction (X) when the holder (110) and the rear cover (40) come into contact.

[0092] The chamber (120) is configured to restrict the rear wave radiated in the opposite direction of the diaphragm (101) from proceeding outward after it has traveled, thereby preventing the front wave and the rear wave from interfering and canceling each other out.

[0093] The chamber (120) can be configured so that a rear wave directed in the opposite direction (Z) to the direction in which the diaphragm (101) is directed can be moved into the chamber (120).

[0094] The chamber (120) may be configured to block the rear wave that has moved into the chamber (120) from moving out of the chamber (120).

[0095] The holder (110) may include an opening (113) provided to allow the chamber (120) and the speaker module (100) to communicate in the opposite direction (Z) to the direction in which the diaphragm (101) faces.

[0096] The rear wave can proceed into the interior of the chamber (120) through the opening (113). The rear wave that has moved into the chamber (120) through the opening (113) is partitioned through the chamber (120) with the forward wave radiated forward of the diaphragm (101), thereby limiting interference or cancellation with the forward wave.

[0097] The opening (113) may be positioned at a location corresponding to the location where the rear wave is radiated. For example, the opening (113) may be provided in a number corresponding to the point where the rear wave is radiated. For example, the opening (113) may be provided in multiple numbers.

[0098] For example, the opening (113) may be opened in the opposite direction (Z) to the direction in which the diaphragm (101) is facing. For example, the opening (113) may be opened in a direction that facilitates the movement of the rear wave, thereby guiding the rear wave to move into the chamber (120).

[0099] The holder (110) may include a wall portion (114) that is arranged to protrude in the opposite direction (-X) of the first direction and extends in a direction orthogonal to the first direction (X) to form a first chamber portion (112).

[0100] The wall (114) may be provided to surround the chamber (120) as a sealed space to restrict the movement of rear waves in the up, down, left, and right directions (Y, -Y, Z, -Z) that are orthogonal to the first direction (X).

[0101] The wall portion (114) can be provided in a shape that surrounds the rear of the speaker module (100) in the opposite direction (Z) to the direction in which the diaphragm (101) faces.

[0102] Accordingly, the chamber (120) can be positioned at the rear of the speaker module (100) in the opposite direction (Z) to the direction in which the diaphragm (101) is facing.

[0103] An opening (113) may be formed in a part of the wall (114).

[0104] For example, the wall portion (114) may include a port provided to allow the rear wave on the chamber (120) to travel in the direction (Z) toward the diaphragm (101). However, the port configuration may not be formed.

[0105] The holder (110) may include a contact portion (115) positioned at the top of the wall portion (114) in the opposite direction (-X) of the first direction and arranged to be sealed in contact with the rear cover (40).

[0106] The contact portion (115) can be provided as a part that contacts the rear cover (40).

[0107] The contact portion (115) can be defined as the entire top of the wall portion (114) in the direction opposite to the first direction (-X).

[0108] The contact portion (115) can be defined as the entire portion that contacts the rear cover (40) in the opposite direction (-X) of the first direction.

[0109] The contact portion (115) may be provided to form the upper part of the first chamber portion (112) in the opposite direction (-X) of the first direction in the first chamber portion (112).

[0110] The rear cover (40) may include a contact rib (43) that protrudes in the first direction (X) and is arranged to come into contact with the contact portion (115).

[0111] The contact rib (43) can be extended in a direction orthogonal to the first direction (X) with a shape corresponding to the wall portion (114).

[0112] The contact rib (43) can form a second chamber portion (42) together with at least a portion of the inner surface of the rear cover (40).

[0113] The shear (44) of the contact rib (43) in the first direction (X) can be arranged to be in contact with the contact portion (115).

[0114] As the front portion (44) of the contact rib (43) and the contact portion (115) come into contact in the first direction (X), the chamber (120) can be arranged to be sealed in the first direction (X).

[0115] Accordingly, the chamber (120) performs a function corresponding to the enclosure configuration, thereby improving the acoustic performance of the speaker module (100) without additional configuration.

[0116] The contact rib (43) can be formed by being integrally molded with the rear cover (40) and protruding from the inner surface of the rear cover (40).

[0117] The contact rib (43) is provided as a separate configuration from the rear cover (40) and can be formed to be coupled to the inner surface of the rear cover (40) and protrude from the inner surface of the rear cover (40).

[0118] The contact rib (43) may be provided as a separate component from the rear cover (40) and may be provided to be bonded to the inner surface of the rear cover (40).

[0119] The contact rib (43) may be provided as a separate configuration from the rear cover (40) and may be provided to be fixed to the inner surface of the rear cover (40).

[0120] The display device (10) may include a sealing member (130) disposed between the contact portion (115) and the upper end (44) of the contact rib (43) to seal the contact portion (115) and the upper end (44) of the contact rib (43).

[0121] The sealing member (130) can be extended in a shape corresponding to the upper end (44) of the contact portion (115) and the contact rib (43) in a direction orthogonal to the first direction (X).

[0122] For example, a sealing member (130) may be placed on the contact portion (115). The sealing member (130) may be coupled to the contact portion (115).

[0123] For example, the sealing member (130) may be placed on the upper end (44) of the contact rib (43). The sealing member (130) may be coupled to the upper end (44) of the contact rib (43).

[0124] The sealing member (130) is closely coupled with the contact portion (115) and the contact rib (43) to improve the sealing performance of the chamber (120) in the first direction (X).

[0125] For example, the sealing member (130) can be formed of an elastic material.

[0126] For example, the sealing member (130) may be provided in a shape corresponding to the contact portion (115) in the first direction (X).

[0127] For example, the sealing member (130) may be provided in a single loop shape extending along the contact portion (115).

[0128] For example, the sealing members (130) may be provided in multiple numbers. Each of the multiple sealing members (130) may be placed on the contact portion (115) to form a loop extending along the contact portion (115).

[0129] Although the contact portion (115) and the contact rib (43) are not in direct contact by the sealing member (130), the chamber (120) can be sealed by the sealing member (130) making close contact with the contact portion (115) and the contact rib (43), respectively.

[0130] For example, the display device (10) does not include a sealing member (130), and the upper end of the contact portion (115) and the contact rib (43) can be in direct contact to seal the chamber (120).

[0131] Below, a holder (210) according to one embodiment of the present invention will be described in detail.

[0132] FIG. 7 is a drawing illustrating a part of the configuration of a display device according to one embodiment.

[0133] The holder (210) may include a wall portion (214) that is arranged to protrude in the opposite direction (-X) of the first direction and extends in a direction orthogonal to the first direction (X) to form a first chamber portion (212).

[0134] The holder (210) may include a contact portion (215) that is concavely formed in the first direction (X) from the top (216) of the wall portion (214) in the opposite direction (-X) of the first direction.

[0135] The contact portion (215) may include a space formed concavely at the top (216) of the wall portion (214).

[0136] At least a portion of the rear cover (40) can be inserted into the contact portion (215) and contacted with the contact portion (215) to be combined with the holder (210).

[0137] The contact rib (43) of the rear cover (40) can be arranged to be inserted into the contact portion (215) in a first direction (X).

[0138] The contact rib (43) can be inserted into the contact portion (215) and arranged to come into contact with and be joined to the contact portion (215).

[0139] As the contact rib (43) is inserted into the contact portion (215), the bonding area increases, thereby improving the bonding strength, and as the sealing area increases, the sealing performance can be improved.

[0140] For example, the display device (10) may include a sealing member (230) inserted into the internal space (217) of the contact portion (215).

[0141] The sealing member (230) can be inserted into the internal space (217) of the contact portion (215) and the contact rib (43) can be inserted into the contact portion (215) and arranged to come into contact with the contact rib (43).

[0142] The sealing member (230) can be in close contact with the contact rib (43) and the contact portion (215) in the internal space (217) of the contact portion (215) to improve sealing performance.

[0143] For example, the display device (10) may be configured so as not to include a sealing member (230), but to have a contact rib (43) inserted into a contact portion (215) so that the contact rib (43) and the contact portion (215) come into direct contact to seal the chamber (120).

[0144] Below, a rear cover (40) according to one embodiment of the present invention will be described in detail.

[0145] FIG. 8 is a drawing showing a part of the rear cover of a display device according to one embodiment.

[0146] The rear cover (40) may include a rigid member (46) that is provided inside the chamber (120) and is disposed on the inner surface (45) of the contact rib (43) forming the second chamber portion (42).

[0147] A rigid member (46) may be provided to ensure the rigidity of the chamber (120) in response to resonance caused by a rear wave moved into the chamber (120).

[0148] When the chamber (120) vibrates due to resonance, vibration is transmitted to the rear cover (40) and / or rear chassis (50), which may reduce the reliability of the display device (10). The rigid member (46) can limit the vibration of the chamber (120) by ensuring rigidity against resonance caused by the rear wave.

[0149] For example, the rigid member (46) can be provided as a frame having a plurality of honeycomb shapes.

[0150] For example, a rigid member (46) may be disposed on an inner surface (45) that forms a chamber (120), with the frame formed by a plurality of ribs.

[0151] For example, a rigid member (46) can be placed on the inner side of the contact rib (43).

[0152] For example, the rigid member (46) may be placed on one side constituting the first chamber portion (112) in the holder (110), rather than on the inner side (45) of the rear cover (40).

[0153] For example, a plurality of rigid members (46) may be provided on one side constituting the first chamber portion (112) in the inner surface (45) of the rear cover (40) and the holder (110).

[0154] For example, the rigid member (46) may include an acoustic metamaterial configured to control noise vibration at a specific frequency.

[0155] For example, the rigid member (46) can be made of acoustic metamaterial. For example, the frame of the rigid member (46) can be made of acoustic metamaterial.

[0156] Below, a rear cover (40) and a holder (110) according to one embodiment of the present invention will be described in detail.

[0157] FIG. 9 is a drawing showing a part of the back surface of a display device according to one embodiment, in which the rear cover is shown transparently.

[0158] The display device (10) may include a pressing member (150) that presses the rear cover (40) against the rear chassis (50) so that the contact portion (115) and the contact rib (43) are in close contact.

[0159] The rear cover (40) may include a coupling hole (48) provided so that a pressurizing member (150) penetrates the rear cover (40) and is coupled to the rear chassis (50).

[0160] The coupling hole (48) is opened toward the opposite direction (-X) of the first direction, and the pressing member (150) can be arranged to be inserted into the coupling hole (48) in the first direction (X).

[0161] The pressing member (150) may be configured to press the rear cover (40) toward the rear chassis (50) while being coupled to the rear chassis (50) through the coupling hole (48).

[0162] The holder (110) may include a coupling part (119) that is provided at a position corresponding to the coupling hole (48) and is provided to be coupled with the pressure member (150).

[0163] For example, the connecting portion (119) may be provided so that a pressurizing member (150) penetrates the connecting portion (119) and is connected to the rear chassis (50).

[0164] For example, the connecting part (119) may be provided in a hole shape so that the pressing member (150) can pass through it, and may be provided so that the pressing member (150) passes through and is connected to the connecting part (119).

[0165] For example, the pressure member (150) may be provided to be inserted into the coupling part (119). For example, the coupling part (119) may include an insertion groove into which the pressure member (150) is inserted.

[0166] The pressure member (150) may be provided to penetrate the rear cover (40) and screw-couple with the rear chassis (50).

[0167] For example, the pressure member (150) may be provided to penetrate the rear cover (40) and screw-couple with the coupling part (119) of the holder (110).

[0168] As the pressure member (150) is screw-fastened, the rear cover (40) is fixed in close contact with the rear chassis (50), and in conjunction with this, the contact portion (115) and the contact rib (43) come into close contact, thereby improving the sealing performance of the chamber (120).

[0169] Specific embodiments have been illustrated and described above. However, the invention is not limited to the embodiments described above, and those skilled in the art may make various modifications without departing from the essence of the technical concept of the invention as described in the following claims.

Claims

1. A display panel that displays an image in the first direction, which is the front; A chassis positioned at the rear of the above-mentioned display panel; A rear cover covering the rear of the above chassis; A speaker module comprising a diaphragm facing a second direction orthogonal to the first direction; A holder for fixing the speaker module to the chassis so that it is positioned between the chassis and the rear cover; comprising A display device comprising the holder and the rear cover, wherein the holder and the rear cover are formed by being sealed in contact with each other in the first direction, and positioned opposite to the second direction with respect to the diaphragm to form a chamber.

2. In Paragraph 1. The above chamber is configured so that sound waves directed in the opposite direction of the second direction move into the chamber, and A display device configured to block sound waves moved into the chamber from moving outside the chamber.

3. In Paragraph 2. The holder includes an opening provided to allow the chamber and the speaker module to communicate in a direction opposite to the direction in which the diaphragm faces, and A display device configured to allow the sound waves to move into the chamber through the opening.

4. In Paragraph 1, A display device comprising: a holder provided to protrude in the opposite direction of the first direction and a wall portion provided to extend around in a direction orthogonal to the second direction and the first direction to form the chamber; and a contact portion provided to be located at the top of the wall portion in the opposite direction of the first direction and to be sealed in contact with the rear cover.

5. In Paragraph 4, A display device comprising a rear cover that protrudes in the first direction and is provided to contact the contact portion.

6. In Paragraph 4, A display device comprising a holder positioned on the outer side of the wall portion in a direction orthogonal to the second direction and the first direction, and a mounting portion on which the speaker module is mounted.

7. In Paragraph 1, The above rear cover is provided to cover the speaker module, and A display device comprising an outlet configured to allow sound waves directed in the second direction to move outside the rear cover.

8. In Paragraph 5, A display device further comprising a sealing member disposed between the contact portion and the contact rib to seal the contact portion and the contact rib.

9. In Paragraph 8, The above sealing member is disposed on the contact portion and is a display device extending along the contact portion in a direction orthogonal to the second direction and the first direction.

10. In Paragraph 5, A display device in which the above contact portion is concavely formed in the first direction at the top of the above wall portion, and the above contact rib is formed to be inserted into and contact the above contact portion.

11. In Paragraph 5, A display device comprising a pressing member that presses the rear cover against the chassis so that the contact portion and the contact rib are in close contact.

12. In Paragraph 11, The rear cover is open in the first direction and includes a coupling hole provided so that the pressing member penetrates the rear cover and is coupled to the chassis. A display device configured such that the above-mentioned pressing member is coupled to the chassis through the above-mentioned coupling hole and presses the rear cover toward the chassis.

13. In Paragraph 11, The above-mentioned pressure member is a display device arranged to penetrate the rear cover and be screw-coupled to the chassis.

14. In Paragraph 5, A display device comprising a rigid member disposed on at least one surface inside the chamber and formed in a plurality of honeycomb shapes.

15. In Paragraph 14, The above rigid member is a display device disposed on the rear cover and arranged to be located inside the chamber.

Images