KR20220096034A - Display apparatus having exiter - Google Patents

Abstract

A display device according to an embodiment of the present specification comprises: a display panel; a first support member; a second support member; a vibration device; and a pad. The display panel displays an image. The first support member is disposed on a rear surface of the display panel, and comprises at least one or more heat dissipation ports. The second support member is disposed on a rear surface of the first support member, and comprises at least one or more ventilation ports. The vibration device has one side end attached to the rear surface of the display panel, and the other end fixed to the second support member. The pad is attached to the rear surface of the display panel, and is disposed on top of the first support member corresponding to the heat dissipation port. Therefore, the present invention is capable of maximizing a heat dissipation effect.

Description

Display device with vibration device {DISPLAY APPARATUS HAVING EXITER}

The present specification relates to a display device having a vibrating device. In particular, the present specification relates to a display device in which a vibrating device is mounted on a rear surface of a display panel.

The display device displays an image on the display panel, and a separate speaker must be installed to provide sound. When the speaker is disposed in the display device, the speaker occupies a space, so there is a problem in that the design and space arrangement of the display device are limited.

Since the sound output from the speaker is provided to the rear or lower side of the display device, there is a problem in that the sound quality is deteriorated due to interference with the sound reflected from the wall or the ground. Therefore, it is difficult to accurately transmit sound, and there are problems in that a viewer or user's sense of immersion is reduced.

Accordingly, the inventor of the present specification recognized the above-mentioned problems, and conducted various experiments to implement a display device having a vibration device with improved sound quality and reliability. Through various experiments, a display device having a vibration device of a new structure capable of improving sound quality and reliability was invented.

An object to be solved by the embodiments of the present specification is to provide a display device including a vibrating device that is disposed on a rear surface of a display module to vibrate the display module to generate sound, and has improved sound pressure characteristics.

An object to be solved by the exemplary embodiment of the present specification is to provide a display device including a structure for dissipating heat generated from a vibrating device.

The problems to be solved by the embodiments of the present specification are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

A display device according to an exemplary embodiment of the present specification includes a display panel, a first support member, a second support member, a vibration device, and a pad. The display panel displays an image. The first support member is disposed on the rear surface of the display panel and includes at least one heat dissipation hole. The second support member is disposed on the rear surface of the first support member and includes at least one vent hole. One end of the vibrating device is attached to the rear surface of the display panel, and the other end is fixed to the second support member. The pad is attached to the rear surface of the display panel and is disposed on the first support member to correspond to the heat sink.

Specific details of other embodiments are included in the detailed description and drawings.

The display device according to an embodiment of the present specification may generate a sound so that the sound provided by the display device proceeds to the front of the display module by configuring a vibrating device or an acoustic vibrator that vibrates the display module.

The display device according to the embodiment of the present specification provides a display device capable of lowering the temperature of the display module and improving the temperature uniformity of the display module by configuring a support member including an air inlet and/or vent. can

The display device according to the embodiment of the present specification has a feature of configuring a pad disposed to correspond to the inlet and/or the vent on the rear surface of the display panel. Accordingly, by performing an operation of sequentially closing or opening the inlet as the vibrating device operates, the flow of air for heat dissipation may be smoothed, thereby maximizing the heat dissipation effect.

Effects of the present specification are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

Since the content of the invention described in the problems to be solved above, the means for solving the problems, and the effects do not specify the essential characteristics of the claims, the scope of the claims is not limited by the matters described in the content of the invention.

1 is a view showing a display device according to an embodiment of the present specification.
2 is an enlarged cross-sectional view showing in detail the structure of a vibration device according to an example of the present specification.
3 is a plan view illustrating a display device according to a first embodiment of the present specification.
FIG. 4 is a cross-sectional view showing the structure of the display device according to the first embodiment taken along the perforated line I-I' shown in FIG. 3 .
5 is a perspective view illustrating a structure of a pad provided in the display device according to the first embodiment of the present specification.
6A and 6B are cross-sectional views illustrating changes in the internal structure of the display device according to the first embodiment due to the operation of the vibrating device.
7 is a plan view illustrating a display device according to a second embodiment of the present specification.
FIG. 8 is a cross-sectional view showing the structure of the display device according to the second embodiment taken along the perforated line II-II' shown in FIG. 7 .
9 is a plan view illustrating a display device according to a third embodiment of the present specification.
10 is a perspective view illustrating a structure of a pad provided in a display device according to a fourth embodiment of the present specification.

Advantages and features of the present specification, and a method of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, but will be implemented in various different forms. Only the following embodiments are provided so that the disclosure of the present specification is complete, and to inform those of ordinary skill in the art to which this specification belongs the scope of the invention. This specification should be defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present specification are exemplary and are not limited to the matters shown in the present specification. Like reference numerals may refer to like elements throughout. In addition, in the description of the present specification, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present specification, the detailed description thereof will be omitted. When "includes," "has," "consisting of," etc. mentioned in this specification are used, other components may be added unless "only" is used. When a component is expressed in the singular, cases including the plural are included unless otherwise explicitly stated.

In interpreting the components, even if there is no explicit description of the error range, it is interpreted as including the error range.

In the case of a description of the positional relationship, for example, when the positional relationship of the two parts is described as "on," "on," "under," "next to", etc., for example , one or more other elements may be placed between the two parts unless "directly" or "directly" is used.

In the case of a description of a temporal relationship, if the temporal precedence is described as "after," "after," "after," "before", etc., "immediately" or "directly" are not used. It may include a case where it is not more continuous.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present specification.

In describing the components of the present specification, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, order, or number of the elements are not limited by the terms. When it is described that a component is “connected” “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but indirectly without specifically stated It should be understood that other components may be “interposed” between each component that is connected or may be connected.

“At least one” should be understood to include all combinations of one or more of the associated elements. For example, the meaning of “at least one of the first, second, and third components” means not only the first, second, or third component, but also two or more of the first, second, and third components. It can be said to include combinations.

As used herein, the term “display device” may include a display device such as a liquid crystal module (LCM) including a display panel and a driving unit for driving the display panel, and an organic light emitting display module (OLED module). And LCM, a finished product (complete product or final product) including an OLED module, a notebook computer, a TV, a computer monitor, a vehicle or an automotive device (Automotive apparatus) or other types of vehicle (Vehicle) including other types of (Vehicle) Equipment apparatus, a set electronic apparatus such as a mobile electronic apparatus such as a smart phone or an electronic pad, or a set device or set apparatus may also be included.

Accordingly, in the present specification, the display device may include the display device itself, such as an LCM, an OLED module, etc., and an application product including an LCM, an OLED module, or the like, or even a set device, which is a device for a final device.

In addition, in some examples, an LCM or OLED module composed of a display panel and a driving unit may be expressed as a “display device”, and an electronic device as a finished product including the LCM and OLED module may be divided and expressed as a “set device”. For example, the display device may include a liquid crystal (LCD) or organic light emitting (OLED) display panel, and a source PCB serving as a controller for driving the display panel. The set device may further include a set PCB, which is a set controller electrically connected to the source PCB to drive the entire set device.

As the display panel used in the embodiment of the present specification, any type of display panel such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, and an electroluminescent display panel may be used. , the embodiment is not limited to ah. For example, the display panel may be a vibration generating device according to an embodiment of the present specification or a display panel capable of generating sound by being vibrated by the vibration device. The display panel applied to the display device according to the embodiment of the present specification is not limited to the shape or size of the display panel.

For example, when the display panel is a liquid crystal display panel, it may include a plurality of gate lines, data lines, and pixels formed at intersections of gate lines and data lines. And an array substrate including a thin film transistor as a switching element for controlling light transmittance in each pixel, an upper substrate including a color filter and/or a black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate may be included.

When the display panel is an organic light emitting (OLED) display panel, it may include a plurality of gate lines, data lines, and pixels formed at intersections of the gate lines and the data lines. And an array substrate including a thin film transistor which is a device for selectively applying a voltage to each pixel, an organic light emitting device (OLED) layer on the array substrate, and an encapsulation substrate or phosphorus disposed on the array substrate to cover the organic light emitting device layer It may be configured to include an encapsulation substrate and the like. The encapsulation substrate may protect the thin film transistor and the organic light emitting device layer from external impact, and may prevent penetration of moisture or oxygen into the organic light emitting device layer. In addition, the layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer and a quantum dot light emitting layer. Another example may include a micro light emitting diode.

The display panel may further include a backing element such as a metal plate attached to the display panel or a rear element. Other structures may be included, for example other structures made of different materials.

In the present specification, a vibration device or a display device including the vibration device may be applied to a vehicle as a user interface module such as a central control panel in an automobile. For example, such a display panel may be implemented between occupants of two front seats so that vibrations of the display panel are propagated toward the interior of the vehicle. Accordingly, the audio experience in the vehicle can be improved compared to a structure having speakers only on the interior sides of the vehicle.

Each feature of the various embodiments of the present specification may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each embodiment may be independently implemented with respect to each other, and implemented together in a related relationship You may.

Hereinafter, embodiments of the present specification will be described with reference to the accompanying drawings. The scales of the components shown in the drawings may have different scales from the actual ones for convenience of description, and are not limited to the scales shown in the drawings.

1 is a perspective view illustrating a display device according to an embodiment of the present specification. Referring to FIG. 1 , a display device according to an embodiment of the present specification may include a display module 100 , a support member 300 , and one or more vibration devices 500 . In the following description, only one vibration device 500 is illustrated for convenience, but the present invention is not limited thereto, and two or more may be disposed.

The display module 100 vibrates according to the driving of at least one vibration device 500 while displaying an image to output a sound PVS (or panel vibration sound) in a front direction (or a front direction) FD. can Alternatively, the display module 100 may vibrate according to the driving of at least one vibration device 500 in a state in which no image is displayed to output the sound PVS to the front FD. The display module 100 according to the present specification may display an image and generate (or output) a sound PVS simultaneously or separately.

The display module 100 according to an embodiment of the present specification may include a display panel 110 that displays an image. For example, the image may include an electronic image or a digital image. The display panel 110 may display an image by outputting light. The display panel 110 may be any type of display panel or curved display panel such as a liquid crystal display panel, an organic light emitting display panel, a quantum dot light emitting display panel, a micro light emitting diode display panel, and an electrophoretic display panel. The display panel 110 may be a flexible display panel. For example, the display panel 110 may be a flexible light emitting display panel, a flexible electrophoretic display panel, a flexible electrowetting display panel, a flexible micro light emitting diode display panel, or a flexible quantum dot light emitting display panel.

The display panel 110 vibrates according to the vibration of the vibrating device 500 to directly output the sound PVS to the front FD, so that the display panel 110 is a diaphragm or speaker that directly generates the sound PVS can be For example, when the display module 100 generates the sound PVS, the display module 100 may be a diaphragm, a panel speaker, or a flat speaker that directly generates the sound PVS.

The display panel 110 may include a pixel circuit disposed on a substrate (or a base substrate), and a pixel array layer (or a display unit) connected to the pixel circuit and having an anode electrode, a cathode electrode, and an emission layer. The anode electrode may be a first electrode or a pixel electrode, but is not limited thereto. The cathode electrode may be a second electrode or a common electrode, and the term is not limited thereto. The display panel 110 may display an image in the form of a top emission method, a bottom emission method, a dual emission method, etc. depending on the structure of the pixel array layer. . In the top emission method, visible light generated from the pixel array layer is emitted in the direction of the substrate of the display panel 110 to display an image, and in the bottom emission method, visible light generated from the pixel array layer is emitted in the opposite direction of the substrate. to display the image.

The display panel 110 may include a pixel array unit disposed in a pixel area formed by a plurality of gate lines and/or a plurality of data lines. The pixel array unit may include a plurality of pixels that display an image according to signals supplied to signal lines. The signal lines may include a gate line, a data line, and a pixel driving power line. For example, a signal may be supplied to a gate line, data, and a pixel driving power line under the control of the timing controller.

Each of the plurality of pixels may include a pixel circuit layer including a driving thin film transistor provided in the pixel region, an anode electrode electrically connected to the driving thin film transistor, an emission layer formed on the anode electrode, and a cathode electrode electrically connected to the emission layer.

The driving thin film transistor may be configured in a transistor region of each pixel region disposed on the substrate. The driving thin film transistor may include a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the thin film transistor may include silicon such as a-Si, poly-Si, or low-temperature poly-Si, or an oxide such as IGZO (Indium-Gallium-Zinc-Oxide), but is not limited thereto.

The anode electrode may be provided in an opening region (or a light emitting region) disposed in each pixel region to be electrically connected to the driving thin film transistor.

For example, the light emitting layer may be formed on the anode electrode to constitute an organic light emitting device. The organic light emitting device may be implemented to emit light of the same color, for example, white, for each pixel, or to emit light of a different color, for example, one or more of red, green, and blue light for each pixel.

As another example, the light emitting layer may be electrically connected to each of the anode electrode and the cathode electrode to constitute a micro light emitting diode device. The micro light emitting diode device is a light emitting diode implemented in the form of an integrated circuit (IC) or a chip, and may include a first terminal electrically connected to an anode electrode and a second terminal electrically connected to a cathode electrode. The cathode electrode may be commonly connected to the light emitting device of the light emitting layer provided in each pixel area.

The encapsulation part may be formed on the substrate to surround the pixel array part, thereby preventing oxygen or moisture from penetrating into the light emitting layer of the pixel array part. The encapsulation unit according to an example may be formed in a multi-layer structure in which organic material layers and inorganic material layers are alternately stacked, but is not limited thereto. The inorganic material layer may block oxygen or moisture from penetrating into the light emitting device layer of the pixel array unit. The organic material layer may be formed to have a relatively larger thickness than the inorganic material layer to cover particles that may be generated during the manufacturing process. For example, the encapsulation unit may include a first inorganic layer, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer. The organic layer may be a foreign material cover layer.

Also, the display panel 110 may be a liquid crystal display panel including an upper substrate, a lower substrate, and a liquid crystal layer. The upper substrate is a first substrate or a thin film transistor array substrate, and may include a pixel array (or a display unit or a display region) having a plurality of pixels formed in a pixel region crossed by a plurality of gate lines and/or a plurality of data lines. have. Each of the plurality of pixels may include a thin film transistor connected to a gate line and/or a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode to supply a common voltage.

The upper substrate may further include a pad portion provided on the first edge (or the non-display portion) and a gate driving circuit provided on the second edge (or the second non-display portion).

The pad unit may supply a signal supplied from the outside to the pixel array and/or the gate driving circuit. For example, the pad unit may include a plurality of data pads connected to a plurality of data lines through a plurality of data link lines and/or a plurality of gate input pads connected to a gate driving circuit through a gate control signal line. The size of the upper substrate may be larger than that of the lower substrate, but is not limited thereto.

The gate driving circuit may be embedded (or integrated) in the second edge of the upper substrate to be connected to the plurality of gate lines. For example, the gate driving driving circuit may be implemented as a shift resistor including a transistor formed by the same process as a thin film transistor provided in the pixel region. The gate driving circuit according to another example may not be embedded in the upper substrate but may be implemented in the form of an integrated circuit and included in the panel driving circuit. The gate driving circuit may supply a signal to the gate line under the control of the timing controller. The data voltage or common voltage may supply a signal to the data line or the common line under the control of the timing controller.

The lower substrate is a second substrate or a color filter array substrate, and may include a pixel pattern that may include an opening region overlapping a pixel region formed on the upper substrate, and a color filter layer formed in the opening region. The lower substrate may have a smaller size than the upper substrate, but is not limited thereto. For example, the lower substrate may overlap a portion other than the first edge of the upper substrate. The lower substrate may be bonded to the remaining portions except for the first edge of the upper substrate with the liquid crystal layer interposed therebetween by a sealant.

The liquid crystal layer is interposed between the upper substrate and the lower substrate, and may be formed of liquid crystal whose arrangement direction of liquid crystal molecules is changed according to an electric field formed by a data voltage applied to a pixel electrode and a common voltage for each pixel.

The lower polarizing member may be attached to the lower surface of the lower substrate to polarize light incident from the backlight and traveling to the liquid crystal layer. The upper polarizing member may be attached to the upper surface of the upper substrate to polarize light emitted to the outside through the upper substrate.

Accordingly, the liquid crystal display panel can display an image according to the light passing through the liquid crystal layer by driving the liquid crystal layer according to the electric field formed for each pixel by the data voltage and the common voltage applied to each pixel.

In the liquid crystal display panel, an upper substrate may be formed of a color filter array substrate, and a lower substrate may be formed of a thin film transistor array substrate. As another example, the liquid crystal display panel may have a vertically inverted shape. In this case, the pad portion of the liquid crystal display panel may be covered by a separate mechanism.

The display panel 110 according to the exemplary embodiment of the present specification may include a bent portion bent or bent to have a curved shape or a constant radius of curvature.

The bending portion of the display panel 110 may be implemented on at least one of a side edge portion and the other edge portion parallel to each other in the display panel 110 . One edge and/or the other edge of the display panel 110 implementing the bending part may include only the non-display area, or may include an edge of the display area and the non-display area. Here, the display panel 110 including the bending part implemented by bending the non-display area may have a one-sided bezel bending structure or a double-sided bezel bending structure. In addition, the display panel 110 including the bending part implemented by bending the edge of the display area and the non-display area may have one side active bending structure or both side active bending structures.

The display module 100 according to the embodiment of the present specification may further include a functional film 130 disposed on the display panel 110 .

The functional film 130 may be attached to the display panel 110 through a transparent adhesive member. The transparent adhesive member may include, but is not limited to, a pressure sensitive adhesive (PSA), an optical clear adhesive (OCA), or an optical clear resin (OCR).

The functional film 130 may include an anti-reflection layer (or anti-reflection film) for preventing reflection of external light to improve outdoor visibility and contrast ratio of an image displayed on the display panel 110 . For example, the antireflection layer may be a circularly polarized light layer (or circularly polarized light) that blocks external light reflected by thin film transistors and/or lines disposed on the pixel array layer of the display panel 110 from propagating to the outside. film) may be included.

The functional film 130 may further include a light path control layer (or a light path control film) that controls a path of light emitted from the pixel array layer of the display panel 110 to the outside. Since the light path control layer includes a structure in which high refractive layers and low refractive layers are alternately stacked, it is possible to minimize the color shift phenomenon due to the viewing angle by changing the path of the light incident from the pixel array layer. In this case, the low refractive index layer may be disposed on the uppermost layer of the optical path control layer, but is not limited thereto.

The display module 100 may further include a touch electrode unit for a user interface using a user's touch. The touch electrode unit may be interposed between the display panel 110 and the functional film 130 or may be embedded in the display panel 110 according to an in-cell touch method. For example, the in-cell touch type touch electrode unit may include mutual capacitance type touch electrodes or self capacitance type touch electrodes.

The display device according to the embodiment of the present specification may further include a support member (not shown). The support member may be disposed on the rear surface of the display module 100 . For example, the support member may support or fix the vibration device 500 .

The supporting members are Cover Bottom, Plate Bottom, Back Cover, Set Cover, Back Cover, Rear surface Frame, Base Frame), a metal frame, a metal chassis, a chassis base, a chassis, or an m-chassis. Accordingly, the support member 300 may be implemented as any type of frame or plate-shaped structure disposed on the rear surface of the display module 100 . The rear surface of the display module 100 may be expressed as one surface, a first surface, a rear surface, or a lower surface, and the like, and is not limited thereto.

The support member may be made of a glass material, a metal material, or a plastic material. For example, the support member made of glass may have at least one of sapphire glass and gorilla glass or a stacked structure (or bonding structure) thereof. As another example, the metal support member may have at least one of aluminum, an aluminum alloy, a magnesium alloy, an alloy of iron and nickel, and stainless steel, an alloy material thereof, or a bonding structure.

The one or more vibration devices 500 may generate the sound PVS using the display module 100 , for example, the display panel 110 as a vibration plate. The display device according to some embodiments of the present specification may include one or more vibrating devices 500 disposed in the center (or central region) of the rear surface of the display module 100 . For example, the one or more vibration devices 500 may vibrate the center of the rear surface of the display module 100 to generate sound PVS due to vibration of the display module 100 in the forward direction FD of the display device. .

The display device may further include a middle frame 700 . The middle frame 700 may be disposed between the rear edge of the display module 100 and the front edge of the support member. The middle frame 700 may support each edge of the display module 100 and the support member. The middle frame 700 may surround each side of at least one of the display module 100 and the support member. The middle frame 700 may provide a gap space (not shown) between the display module 100 and the support member. The gap space may be expressed as an air gap, a vibration space, or a vibration device arrangement space, and the like, but is not limited to terms.

The middle frame 700 may be made of a metal material or a plastic material. For example, the middle frame 700 may be made of a metal material to improve the design of the side surface of the display device and to protect the side surface of the display device.

The display device according to the embodiment of the present specification responds to vibration of the display module 100 , for example, the display panel 110 by one or more vibration devices 500 disposed between the display module 100 and the support member. The sound PVS may be output to the front FD, thereby improving the immersion of the viewer viewing the image of the display device. In addition, since the sound PVS is generated by the vibration of the display panel 110 , it is not necessary to configure a separate speaker, and thus the degree of freedom in the design of the set device and the arrangement of the speaker can be improved.

Hereinafter, the structure of the vibration device 500 according to an example of the present specification will be described in detail with reference to FIG. 2 . The vibration device 500 to be described below is only an example, and is not limited thereto. 2 is an enlarged cross-sectional view illustrating in detail the structure of a vibration device according to an example of the present specification.

Referring to FIG. 2 , the vibration device 500 may include a bobbin 1650 around a magnet 1620 , and a coil 1660 around the bobbin 1650 .

For example, the magnet 1620 may be disposed on the plate 1610 . The magnet 1620 may use a sintered magnet such as barium ferrite, ferric trioxide (Fe ₂ O ₃ ), barium carbonate (witherite) (BaCO ₃ ), neodymium (Nd), strontium ferrite with improved magnetic component It may include one or more of an alloy cast magnet of light (Fe ₁₂ O ₁₉ Sr), aluminum (Al), nickel (Ni), and cobalt (Co). For example, the neodymium magnet may be neodymium-iron-boron (Nd-Fe-B) or the like. The plate 1610 may be a yoke or the like, and is not limited thereto. The plate 1610 may include a magnet 1620 , a bobbin 1650 , and a protrusion 1610 ′ surrounding the coil 1660 .

A center pole 1630 may be disposed on the magnet 1620 . As an example, the center pole 1630 may be referred to as pole pieces. As another example, pole pieces may be further disposed on the center pole 1630 .

The bobbin 1650 may surround the magnet 1620 . For example, the bobbin 1650 may be disposed on the plate 1610 . The bobbin 1650 may have a circular shape or an ellipse or oval shape. An oval shape includes an elliptical shape, a rectangular shape with rounded corners, or a non-circular curved shape having a width different from its height. can do. For example, in the bobbin 1650 having an oval shape, the ratio of the diameter of the major axis to the diameter of the minor axis may be 1.3:1 to 2:1. The oval-shaped bobbin 1650 may improve the sound of the high-pitched range than the circular-shaped one, and may generate less heat due to vibration, and thus may have excellent heat dissipation characteristics.

The coil 1660 may be wound around the outer circumferential surface of the bobbin 1650 to receive a current (or voice current) for generating a sound from the outside. For example, the coil 1660 may be raised and lowered together with the bobbin 1650 . The coil 1660 may be expressed as a voice coil or the like. When a current is applied to the coil 1660, the entire bobbin 1650 moves up and down according to Fleming's left hand rule based on the applied magnetic field formed around the coil 1660 and the external magnetic field formed around the magnet 1620 will do The vibration of the display module 100 caused by the vertical movement (or vibration) of the bobbin 1650 generates a sound PVS or a sound wave.

Since the bobbin 1650 vibrates up and down, partial vibration due to vertical vibration occurs, and the partial vibration of the bobbin 1650 may be affected by the weight of the bobbin 1650, and the weight of the bobbin 1650 is the coil. (1660) is affected by the weight. Accordingly, when the weight of the coil 1660 is reduced, the partial vibration of the bobbin 1650 may be reduced. Therefore, considering the heat transferred to the bobbin 1650 and the single vibration of the bobbin 1650, the coil 1660 has superior thermal conductivity than copper, which is a material of a general coil, and thus has relatively good heat dissipation characteristics and is relatively lighter than copper. It may be made of an aluminum material.

Since an oxide film is formed in the air of aluminum, it may not be easy to solder when the vibration device 500 is manufactured. Accordingly, the coil 1660 may include an aluminum layer (or a first metal layer) for heat dissipation, and a metal outer layer (or a second metal layer) surrounding the aluminum layer. In this case, the metal outer layer may include one of copper (Cu), silver (Ag), and gold (Au). For example, the coil 1660 may be a copper clad aluminum wire. Since the metal outer layer is formed in the form of a thin film on the outside of the first metal layer, the weight increase of the coil 1660 may not be significantly affected. As a result, the weight of the coil 1660 may be reduced by approximately 60% compared to a case made of only a copper material or a copper wire.

The bobbin 1650 may be a structure formed of a material processed from pulp or paper, aluminum or magnesium or an alloy thereof, or a synthetic resin such as polyimide. For example, the bobbin 1650 may be formed of a polyimide film that has relatively excellent heat dissipation characteristics and is relatively light in order to prevent a local image quality defect of the display panel 110 due to heat generated from the coil 1660 . can be implemented as

내지 영상 400

까지 광범위한 온도 범위에서 물성이 변하지 않고, 내열성, 전기절연성, 유연성, 및 불연성 등의 특징을 가지고 있다. 폴리이미드 필름은 열적 및 기계적 강도가 우수하여 보빈(1650)의 신뢰성을 향상시킬 수 있으며, 우수한 방열 특성으로 인하여 보빈(1650)의 진동에 의한 열의 발생을 줄일 수 있는 효과가 있다. 예를 들면, 폴리이미드 필름은 KAPTON일 수 있으며, 파이로멜리틱 디안하이드라이드(pyromellitec dianhydride)와 4,4'-옥시디아닐린(4,4'-oxydianiline)의 축합일 수 있다.Polyimide film is minus 270

or video 400

The physical properties do not change in a wide temperature range until Since the polyimide film has excellent thermal and mechanical strength, the reliability of the bobbin 1650 can be improved, and due to excellent heat dissipation properties, the generation of heat due to vibration of the bobbin 1650 can be reduced. For example, the polyimide film may be KAPTON, and may be a condensation of pyromellitic dianhydride and 4,4'-oxydianiline.

The center pole 1630 may be accommodated or inserted into the bobbin 1650 to guide the elevation of the bobbin 1650 . For example, the center pole 1630 may be accommodated or inserted into the bobbin 1650 , such that an outer circumferential surface of the center pole 1630 may be surrounded by the bobbin 1650 . The center pole 1630 may be expressed as an elevating guide or pole pieces, and the like, but is not limited to terms.

The frame 1640 may be disposed outside the periphery of the plate 1610 or the protrusion 1610 ′. The damper 1670 may be disposed between the frame 1640 and the bobbin 1650 . For example, the frame 1640 may be formed at a constant height at the edge of the plate 1610 to have the same shape as the bobbin 1650 . As another example, the frame 1640 may include a hollow portion formed at a predetermined height on the front edge of the plate 1610 and having the same shape as the bobbin 1650 .

The damper 1670 may be connected between the frame 1640 and the vibrating device. For example, the damper 1670 may be connected between the frame 1640 and the bobbin 1650 . The damper 1670 may be expressed in other terms such as spider, suspension, or edge, but is not limited thereto.

One end of the damper 1670 may be connected to the frame 1640 , and the other end of the damper 1670 may be connected to the upper outer surface of the bobbin 1650 . The damper 1670 has a corrugated structure between one end and the other end, so that the vibration of the bobbin 1650 can be controlled while contracting and relaxing according to the vertical motion of the bobbin 1650 . The damper 1670 is connected between the bobbin 1650 and the frame 1640 to limit the vibration distance of the bobbin 1650 through a restoring force. For example, when the bobbin 1650 vibrates more than a certain distance or vibrates less than a certain distance, the bobbin 1650 may return to its original position by the restoring force of the damper 1670 .

In addition, the vibration device 500 according to the present specification may further include a bobbin ring 1652 . The bobbin ring 1652 may be disposed on the front (or front end) of the bobbin 1650 . The bobbin ring 1652 may transmit lifting (or vibration) of the bobbin 1650 to the rear surface of the display panel 110 . The bobbin ring 1652 may have a ring shape attached to the front surface of the bobbin 1650 , a disk shape covering the entire front surface of the bobbin 1650 , or a cap shape surrounding the front surface and upper outer surfaces of the bobbin 1650 . The bobbin ring 1652 may be expressed as a bobbin protection member or the like, and is not limited to terms.

An adhesive member 402 may be disposed between the display panel 110 and the vibration device 500 . The display panel 110 and the vibration device 500 may be attached via the adhesive member 402 . For example, an adhesive member 402 may be disposed between the display panel 110 and the bobbin ring 1652 . The display panel 110 and the bobbin ring 1652 may be attached to each other via the adhesive member 402 . The adhesive member 402 may be one or more of a double-sided tape, a double-sided foam tape, a double-sided pad, a double-sided foam pad, a single-sided tape, a single-sided foam tape, a single-sided pad, a single-sided foam pad, an adhesive, and a bond, but is not limited thereto. As shown in FIG. 2 , the adhesive member 402 may be formed at a portion where one or more vibration devices 500 are attached to the display panel 110 . Alternatively, the adhesive member 402 may be formed on the entire rear surface of the display panel 110 . For example, the adhesive member 402 may be formed on the entire surface between the rear surface of the display panel 110 and the one or more vibration devices 500 . As another example, the adhesive member 402 may be formed on the entire surface between the rear surface of the display panel 110 and the bobbin ring 1652 .

Referring to FIG. 2 , the vibration device 500 may further include an enlarged diameter part 1614 . For example, the enlarged diameter portion 1614 may be integrally formed with the plate 1610 . The plate 1610 of the vibrating device 500 may have a cylindrical shape and a cylindrical shape, as well as various other shapes. One side of the plate 1610 may have a protrusion larger than a diameter of the other portion of the plate 1610 . The area of the protrusion having an increased diameter may be expressed as an enlarged diameter 1614 . The enlarged diameter 1614 may have an annular shape. An extension portion 1612 for fixing the vibrating device 500 may be formed in some of the enlarged diameter portion 1614 .

A connecting member 333 may be disposed on the extension 1612 . The connecting member 333 may include a screw and a nut. For example, the nut may be fixed to the support member 300 . One or more vibrating devices may be coupled to the support member 300 by means of nuts and screws. Accordingly, the vibrating device 500 may be accommodated in the support hole 350S of the support member 300 .

The nut may be, for example, a self-clinching nut. One example of the self-clinching nut may be a PEM® nut, but the embodiment is not limited thereto. When a self-clinching nut is used, the vibration generated from the vibrating device 500 may be partially absorbed by the self-clinching nut, which is a nut, so that the vibration transmitted to the support member 300 can be reduced. have.

<First embodiment>

Hereinafter, the structure of the display device according to the first embodiment of the present specification will be described in detail with reference to FIGS. 3 and 4 . 3 is a plan view illustrating a display device according to a first embodiment of the present specification. FIG. 4 is a cross-sectional view showing the structure of the display device according to the first embodiment taken along the perforated line I-I' shown in FIG. 3 .

Referring to FIGS. 3 and 4 , the display device according to the first embodiment includes a display module 100 , a support member 300 , a middle frame 700 , a heat sink (H), an outlet (T), and a pad (PD). ) and a vibration device 500 .

The display module 100 may include a display panel 110 and a functional film 130 . The display panel 110 may have a rectangular shape of a landscape structure having a long length in the X-axis direction on the XY plane. It is not limited to this structure, and may have a rectangular shape of a portrait structure having a long length in the Y-axis direction. Alternatively, it may have a circular, elliptical, and polygonal structure. The functional film 130 may be attached to the outer surface of the display panel 110 .

The support member 300 is disposed on the rear surface of the display panel 110 . A gap space GS may be formed between the display panel 110 and the support member 300 . A vibrating device 500 may be disposed in the central portion of the support member 300 . For example, a support hole 350S is formed in the central portion of the support member 300 , and the vibration device 500 may be inserted therein. One end of the vibrating device 500 may be attached to the rear surface of the display panel 110 . The other end of the vibrating device 500 may be fixed to the support member 300 . Since the detailed structure of the vibration device 500 has been described above, a redundant description thereof will be omitted.

A middle frame 700 is disposed on the edge of the display panel 110 and the edge of the support member 300 to securely connect the display panel 110 and the support member 300 . The middle frame 700 may include an adhesive member on the frame structure to connect the display panel 110 and the support member 300 to each other. In some cases, the middle frame 700 may be expressed as a fixing member having elasticity. More simply, the middle frame may be replaced with only an adhesive member having excellent elasticity.

The outlet T may be formed in a portion of the middle frame 700 . The outlet T is a structure connecting the gap space GS and the outside of the display module 100 . Air in the gap space GS may flow to the outside through the outlet T. A plurality of outlets T may be formed in the middle frame 700 . For example, a plurality of outlets T may be disposed on four sides of the middle frame 700 except for four corners of the display panel 110 . In particular, as shown in FIG. 2 , the outlet T may be disposed on the left side and the right side of the display panel 110 . In addition, an outlet T may be further disposed on upper and lower sides of the display panel 110 . For example, when the side of the X-axis is longer than the side of the Y-axis, the number of outlets T disposed on the left and right sides may be greater than the number of outlets T disposed on the upper and lower sides. Alternatively, the sum of the sizes of the outlets T disposed on the left and right sides may be greater than the sum of the sizes of the outlets T disposed on the upper and lower sides.

The support member 300 may include a heat sink H disposed around the support hole 350S. The heat sink H may be disposed between the support hole 350S into which the vibration device 500 is inserted and the edge of the support member 300 . The heat dissipation hole H is a hole passing through the support member 300 and is a structure connecting the outside of the display device and the gap space GS. External air may flow into the gap space GS through the heat sink H. The heat sink (H) may have a structure in which a plurality of them are listed.

For example, the heat sink H may include a first heat sink H1 having a first size, a second heat sink H2 having a second size, and a third heat sink H3 having a third size. . The first heat sink H1 is disposed closest to the support hole 350S and may be formed in a circular shape having the largest diameter. The second heat sink H2 is disposed between the first heat sink H1 and the edge of the support member 300 , and may be formed in a circular shape having a smaller diameter than that of the first heat sink H1 . The third heat sink H3 is disposed between the second heat sink H2 and the edge of the support member 300 , and may be formed in a circular shape having a smaller diameter than that of the second heat sink H2 , that is, the smallest diameter.

As shown in FIG. 3 , the heat sink H may be disposed on the left and right sides of the vibration device 500 along the X-axis with respect to the vibration device 500 . In addition, the heat sink H may be further disposed on the upper and lower portions of the vibrating device 500 along the Y-axis with respect to the vibrating device 500 . Although not shown in the drawings, the heat sink H may be radially disposed around the vibration device 500 .

The plurality of heat sinks H1 , H2 , and H3 have the largest size at a portion close to the vibrating device 500 , and preferably have a gradually smaller size as they move away from the vibrating device 500 . As the vibrating device 500 vibrates, the display panel 110 vibrates. The amplitude is greatest at a portion close to the vibrating device 500 and the amplitude gradually decreases as it moves away from the vibrating device 500 . It is preferable to set the sizes of the heat sinks H1, H2, and H3 differently in response to the change in amplitude.

The pad PD is bonded to the rear surface of the display panel 110 . The pad PD may be formed of an organic material having excellent elasticity. For example, it may be formed of a material such as urethane or memory foam. It is preferable that the pad PD has a larger size than the heat sink H and is overlapped so as to completely cover the heat sink H. When the vibration device 500 does not operate, the pad PD is preferably spaced apart from the support member 300 on which the heat dissipation hole H is formed at a slight distance. However, the present invention is not limited thereto, and the end of the pad PD may contact the support member 300 .

Hereinafter, the structure of the pad PD according to the first embodiment of the present specification will be described in detail with reference to FIG. 5 . 5 is a perspective view illustrating a structure of a pad provided in the display device according to the first embodiment of the present specification.

Referring to FIG. 5 , the pad PD may have a wedge shape having a cross-sectional shape of a right triangle. For example, as shown in FIG. 5 , a bottom surface BS, a vertical rectangular side surface VS, a vertical triangular upper side surface US, a vertical triangular lower side surface DS, and an inclined surface SS may be provided. The bottom surface BS may have a rectangular shape capable of sufficiently covering the entire area of the heat sink H. The vertical rectangular side surface VS is a rectangular surface extending in the vertical direction from one short side of the bottom surface BS. The vertical triangular upper side surface US is a triangular-shaped surface extending in the vertical direction from the upper side of the base surface BS. The vertical triangular lower side surface DS is a triangular-shaped surface extending in the vertical direction from the lower side of the base surface BS. The vertical triangular upper side surface US and the vertical triangular lower side surface DS face each other and are disposed in parallel. The inclined surface SS is a rectangular inclined surface extending from the apex side of the vertical rectangular side surface VS to the other short side of the base surface BS.

The bottom surface BS of the pad PD may be attached to the rear surface of the display panel 110 . In particular, it is preferable to arrange the vertical rectangular side surface VS close to the vibration device 500 . As a result, a vertex (ie, a side corresponding to the vertex in the cross-sectional structure) of the pad PD may be disposed between the first heat sink H1 and the vibration device 500 . Meanwhile, the other side opposite to the vertical rectangular side surface VS on the bottom surface BS may be disposed between the third heat sink H3 and the edge of the display panel 110 .

Hereinafter, a mechanism for dissipating heat by air flow as the vibration device 500 operates in the display device according to the first embodiment of the present specification will be described with reference to FIGS. 6A and 6B . 6A and 6B are cross-sectional views illustrating changes in the internal structure of the display device according to the first embodiment due to the operation of the vibrating device.

Referring to FIG. 6A , while the vibrating device 500 moves along the +Z axis, the display panel 110 may be pushed up. Since the edge of the display panel 110 is fixed to the support member 300 by the middle frame 700 , a portion of the display panel 100 on which the vibrating device 500 is disposed convexly rises in the +Z-axis direction. become a state

At this time, since the volume of the gap space GS is increased, external air is introduced into the gap space GS through the heat sink H. At this time, the external air may be unique to the gap space GS even through the outlet T. However, external air is mainly introduced through the heat sink H having a relatively larger area.

Referring to FIG. 6B , as the vibrating device 500 moves in the -Z direction, the display panel 110 may be pulled down. Since the edge of the display panel 110 is fixed to the support member 300 by the middle frame 700 , a portion of the display panel 100 on which the vibrating device 500 is disposed is concavely recessed in the -Z axis direction. become a state

At this time, the pad PD blocks the heat dissipation hole H. Accordingly, the air in the gap space GS is discharged to the outside through the outlet T. In particular, the pad PD is attached to the rear surface of the display panel 110 in an inverted triangular structure, and the highest portion is disposed close to the vibration device 500 . As the vibrating device 500 vibrates, the display panel 110 vibrates. In this case, the amplitude of the portion close to the vibrating device 500 is the greatest, and the amplitude gradually increases as the vibration device 500 vibrates. decreases to

Due to this structure and operating principle, the pad PD sequentially covers the first heat dissipation hole H1 to the third heat sink H3 while the display panel 110 is in the concave state. As a result, the air in the gap space GS is pushed in the lateral direction, and is eventually discharged to the outside through the outlet T. In this case, some air may be discharged through the second heat sink H2 and the third heat sink H3 until the first heat sink H1 is completely blocked. However, since the second heat sink H2 and the third heat sink H3 have a smaller size than the first heat sink H1 , the discharge is mainly performed through the outlet T.

The vibration device 500 does not reciprocate only once, but vibrates according to a frequency of 20 Hz to 20,000 Hz, which is an audible region. Accordingly, as the vibration of the vibrating device 500 is repeated, the inertia of the air flow occurs so that the air flow is mainly introduced through the heat sinks H1, H2, and H3 and flows out through the outlet T. can

Due to this flow of air, heat generated according to the operation of the vibration device 500 may not remain in the gap space GS, but may be smoothly discharged to the outside. Also, fresh air having a low temperature may be introduced into the gap space GS from the outside to cool the heat generated by the vibration device 500 and/or the display panel 110 .

<Second embodiment>

Hereinafter, a display device according to a second embodiment of the present specification will be described with reference to FIGS. 7 and 8 . 7 is a plan view illustrating a display device according to a second embodiment of the present specification. FIG. 8 is a cross-sectional view showing the structure of the display device according to the second embodiment taken along the perforated line II-II' shown in FIG. 7 .

7 and 8 , the display device according to the second embodiment includes a display module 100 , an inner panel 310 , a back cover 350 , a middle frame 700 , a heat sink H, and a ventilation hole ( V), an outlet T, a pad PD, and a vibration device 500 .

The display module 100 may include a display panel 110 and a functional film 130 . The display panel 110 may have a rectangular shape of a landscape structure having a long length in the X-axis direction on the XY plane. It is not limited to this structure, and may have a rectangular shape of a portrait structure having a long length in the Y-axis direction. Alternatively, it may have a circular, elliptical, and polygonal structure. The functional film 130 may be attached to the outer surface of the display panel 110 .

An inner panel 310 is disposed on the rear surface of the display panel 110 . A gap space GS may be formed between the display panel 110 and the inner panel 310 . A middle frame 700 may be disposed in an edge region of the inner panel 310 to be bonded to the rear surface of the display panel 110 .

For example, the middle frame 700 may be disposed between the edge of the display panel 110 and the edge of the inner panel 310 to securely connect the display panel 110 and the support member 300 . The middle frame 700 may include an adhesive member on the frame structure to connect the display panel 110 and the support member 300 to each other. In some cases, the middle frame 700 may be expressed as a fixing member having elasticity. More simply, the middle frame may be replaced with only an adhesive member having excellent elasticity.

A back cover 350 is disposed on the rear surface of the inner panel 310 . The inner panel 310 and the back cover 350 may be bonded to each other with a predetermined interval therebetween. Alternatively, the rear surface of the inner panel 310 and the front surface of the back cover 350 may have a surface-bonded structure. 8 shows a structure in which the inner edge and the outer edge are bonded to each other using an adhesive means.

The back cover 350 has a vertical edge portion 350V. The vertical edge part 350V is spaced apart from the edge of the display module 100 by a predetermined interval. A border gap BG may be formed between the vertical edge part 350V of the back cover 350 and the display module 100 .

A vibrating device 500 may be disposed at central portions of the inner panel 310 and the back cover 350 . For example, the support hole 350S is formed in the center of the inner panel 310 and the back cover 350 , and the vibration device 500 may be inserted therein. One end of the vibrating device 500 may be attached to the rear surface of the display panel 110 . The other end of the vibration device 500 may be fixed to the back cover 350 . The inner panel 310 and the back cover 350 may have an integrated structure as a support member. In this case, the inner panel 310 may be defined as a first support member, and the back cover 350 may be defined as a second support member. Since the detailed structure of the vibration device 500 has been described above, a redundant description thereof will be omitted.

The outlet T may be formed in a portion of the middle frame 700 . The outlet T is a structure connecting the gap space GS and the outside of the display module 100 . Air in the gap space GS may flow to the outside through the outlet T and the border gap BG. A plurality of outlets T may be formed in the middle frame 700 . For example, a plurality of outlets T may be disposed on four sides of the middle frame 700 except for four corners of the display panel 110 . In particular, as shown in FIG. 7 , the outlet T may be disposed on the left side and the right side of the display panel 110 . In addition, an outlet T may be further disposed on upper and lower sides of the display panel 110 .

The inner panel 310 may include a heat sink H disposed around the support hole 350S. The heat sink H may be disposed between the support hole 350S into which the vibration device 500 is inserted and the edge of the inner panel 310 . The heat dissipation hole H is a hole passing through the inner panel 310 and is a structure connecting the outside of the display device and the gap space GS. External air may flow into the gap space GS through the heat sink H. The heat sink (H) may have a structure in which a plurality of them are listed.

For example, the heat sink H may include a first heat sink H1 having a first size, a second heat sink H2 having a second size, and a third heat sink H3 having a third size. . The first heat sink H1 is disposed closest to the support hole 350S and may be formed in a circular shape having the largest diameter. The second heat sink H2 is disposed between the first heat sink H1 and the edge of the support member 300 , and may be formed in a circular shape having a smaller diameter than that of the first heat sink H1 . The third heat sink H3 is disposed between the second heat sink H2 and the edge of the support member 300 , and may be formed in a circular shape having a smaller diameter than that of the second heat sink H2 , that is, the smallest diameter.

As shown in FIG. 7 , the heat sink H may be disposed on the left and right sides of the vibration device 500 along the X-axis with respect to the vibration device 500 . In addition, the heat sink H may be further disposed on the upper and lower portions of the vibrating device 500 along the Y-axis with respect to the vibrating device 500 . Although not shown in the drawings, the heat sink H may be radially disposed around the vibration device 500 .

The plurality of heat sinks H1 , H2 , and H3 have the largest size at a portion close to the vibrating device 500 , and preferably have a gradually smaller size as they move away from the vibrating device 500 . As the vibrating device 500 vibrates, the display panel 110 vibrates. The amplitude is greatest at a portion close to the vibrating device 500 and the amplitude gradually decreases as it moves away from the vibrating device 500 . It is preferable to set the sizes of the heat sinks H1, H2, and H3 differently in response to the change in amplitude.

The back cover 350 may include a ventilation hole V disposed around the support hole 350S. The ventilation hole (V) may be disposed to overlap the heat sink (H). For example, the ventilation hole (V) has a larger size than the heat sink (H), it may be arranged to completely include the heat sink (H). Accordingly, external air may flow into the gap space GS through the ventilation hole V and the heat sink H.

The pad PD is bonded to the rear surface of the display panel 110 . The pad PD may be formed of an organic material having excellent elasticity. For example, it may be formed of a material such as urethane or memory foam. It is preferable that the pad PD has a larger size than the heat sink H and is overlapped so as to completely cover the heat sink H. When the vibration device 500 does not operate, the pad PD is preferably spaced apart from the support member 300 on which the heat dissipation hole H is formed at a slight distance. However, the present invention is not limited thereto, and the end of the pad PD may contact the support member 300 .

In this structure, the display panel 110 may be pushed upward while the vibration device 500 moves along the +Z axis. Since the edge of the display panel 110 is fixed to the inner panel 310 by the middle frame 700 and the inner panel 310 is fixed to the back cover 350 , the vibrating device 500 in the display panel 100 is ) is placed convexly in the +Z-axis direction.

At this time, since the volume of the gap space GS is increased, external air is introduced into the gap space GS through the ventilation hole V and the heat sink H. At this time, the external air may be unique to the gap space GS even through the outlet T. However, external air is mainly introduced through the vent (V) and the heat sink (H) having a relatively larger area.

As the vibrating device 500 moves in the -Z direction, the display panel 110 may be pulled down. Since the edge of the display panel 110 is fixed to the inner panel 310 and the back cover 350 by the middle frame 700 , a portion of the display panel 100 in which the vibrating device 500 is disposed is located along the -Z axis. direction is concavely depressed. At this time, the pad PD blocks the heat dissipation hole H. Accordingly, the air in the gap space GS is discharged to the outside through the outlet T.

The pad PD is attached to the rear surface of the display panel 110 in an inverted triangular structure, and the highest part is disposed close to the vibration device 500 . As the vibrating device 500 vibrates, the display panel 110 vibrates. In this case, the amplitude of a portion close to the vibrating device 500 is greatest, and the amplitude gradually increases as the vibration device 500 vibrates. decreases to

Due to this structure and operation principle, the pad PD sequentially covers the first heat dissipation hole H1 to the third heat sink H3 while the display panel 110 is in the concave state. As a result, the air in the gap space GS is pushed in the lateral direction, and is eventually discharged to the outside through the outlet T. In this case, some air may be discharged through the second heat sink H2 and the third heat sink H3 until the first heat sink H1 is completely blocked. However, since the second heat sink H2 and the third heat sink H3 have a smaller size than the first heat sink H1 , the discharge is mainly performed through the outlet T.

As the display panel 110 repeatedly vibrates by the vibrating device 500 , inertia of air flow occurs. Accordingly, the flow of air is mainly introduced through the vent (V) and the heat sink (H1, H2, H3) and out through the outlet (T) can be formed.

Due to this flow of air, heat generated according to the operation of the vibration device 500 may not remain in the gap space GS, but may be smoothly discharged to the outside. Also, fresh air having a low temperature may be introduced into the gap space GS from the outside to cool the heat generated by the vibration device 500 and/or the display panel 110 .

<Third embodiment>

Hereinafter, a third embodiment of the present specification will be described with reference to FIG. 9 . 9 is a plan view illustrating a display device according to a third embodiment of the present specification.

Referring to FIG. 9 , the basic structure of the display device according to the third embodiment is the same as that of the first embodiment shown in FIG. 3 . The difference lies in the shape and structure of the heat sink (H). The heat dissipation hole H disposed in the display device according to the third embodiment is formed in a triangular shape. For example, the base of the triangle is disposed around the vibration device 500 , and the vertex of the triangle is disposed away from the vibration device 500 . That is, the heat dissipation hole H may have a shape having the longest width at a position close to the vibrating device 500 , and sequentially decreasing in width as it moves away from the vibrating device 500 .

The shape of the heat sink (H) shown in FIG. 9 is an example, and is not limited to this shape. As another example, it may have a shape in which a large quadrangle, a middle quadrangle, and a small quadrangle are continuously arranged. The heat dissipation hole H has the largest opening area at a position close to the vibration device 500 , and has a shape in which the opening area gradually decreases as it moves away from the vibration device 500 .

<Fourth embodiment>

Hereinafter, a fourth embodiment of the present specification will be described with reference to FIG. 10 . 10 is a perspective view illustrating a structure of a pad provided in a display device according to a fourth exemplary embodiment of the present specification. The fourth embodiment describes a case having a structure different from that of the pad described above.

Referring to FIG. 10 , the pad PD according to the fourth embodiment may have a wedge shape of a quadrangular truncated pyramid. For example, the pad PD may have a wedge shape having a cross-sectional shape of a right-angled trapezoid. As an example, as shown in FIG. 10, the bottom surface (BS), the vertical rectangular side surface (VS), the vertical trapezoidal upper side surface (US), the vertical salicyclic lower side surface (DS), the upper surface (TS) and the inclined surface (SS) can be provided The bottom surface BS may have a rectangular shape capable of sufficiently covering the entire area of the heat sink H. The vertical rectangular side surface VS is a rectangular surface extending in the vertical direction from one short side of the bottom surface BS. The vertical trapezoidal upper side surface US is a vertical trapezoidal surface extending in the vertical direction from the upper side of the bottom surface BS. The vertical trapezoid lower surface DS is a vertical trapezoidal surface extending in the vertical direction from the lower side of the base surface BS. The vertical trapezoidal upper side surface US and the vertical trapezoidal lower side surface DS face each other and are disposed in parallel. The upper surface TS is a surface opposite to the lower surface BS and is a surface extending a predetermined distance in the horizontal direction from the vertical rectangular side surface VS. The inclined surface SS is a rectangular inclined surface extending from the upper surface TS and the lower surface BS.

The upper surface TS has a predetermined width W. The width W of the upper surface may have a size corresponding to 30% to 70% of the size of the first heat sink H1 illustrated in FIG. 3 . However, the present invention is not limited thereto, and the size ratio of the display panel 110 may be different depending on conditions such as the number of heat dissipation holes H. For example, the width W of the upper surface may have a size to cover the first heat dissipation hole H1.

The bottom surface BS of the pad PD may be attached to the rear surface of the display panel 110 . In particular, the vertical rectangular side surface VS is preferably disposed close to the vibration device 500 . As a result, the upper surface TS of the pad PD may be disposed to overlap at least a portion of the first heat dissipation hole H1 . Meanwhile, a side opposite to the vertical rectangular side surface VS on the bottom surface BS may be disposed between the third heat sink H3 and the edge of the display panel 110 .

In the various embodiments described above, a case in which one vibration device is disposed on one display panel has been mainly described. However, two or more vibrating devices may be disposed. In this case, the exhaust hole, the ventilation hole, and the pad according to the present specification may be disposed between the vibrating device and the edge of the display panel. In addition, an exhaust port, a vent hole, and a pad according to the present specification may be disposed between the vibrating device and the vibrating device.

The vibration device according to the embodiment of the present specification may be applied to a vibration device disposed on a display device. A display device according to an embodiment of the present specification includes a mobile device, a video phone, a smart watch, a watch phone, a wearable apparatus, a foldable apparatus, and a rollable apparatus. apparatus), bendable apparatus, flexible apparatus, curved apparatus, electronic notebook, e-book, PMP (portable multimedia player), PDA (personal digital assistant), MP3 player, mobile Medical device, desktop PC, laptop PC, netbook computer, workstation, navigation, vehicle navigation, vehicle display device, vehicle device, theater device, theater display device , a television, a wallpaper device, a signage device, a game device, a notebook computer, a monitor, a camera, a camcorder, and a home appliance. And, the vibration device of the present specification can be applied to an organic light emitting device or an inorganic light emitting device. When a vibrating device or a sound generating device is applied to a lighting device, it may serve as a lighting device and a speaker. In addition, when the display device of the present specification is applied to a mobile device, it may be at least one of a speaker, a receiver, and a haptic, but is not limited thereto.

A display device according to an embodiment of the present specification may be described as follows.

A display device according to an exemplary embodiment of the present specification includes a display panel, a first support member, a second support member, a vibration device, and a pad. The display panel displays an image. The first support member is disposed on the rear surface of the display panel and includes at least one heat dissipation hole. The second support member is disposed on the rear surface of the first support member and includes at least one vent hole. One end of the vibrating device is attached to the rear surface of the display panel, and the other end is fixed to the second support member. The pad is attached to the rear surface of the display panel and is disposed on the first support member to correspond to the heat sink.

According to various embodiments of the present specification, the display device further includes a middle frame and an outlet. The middle frame attaches the edge area of the first support member to the edge area of the display panel. The outlet is at least one or more passing through the middle frame.

According to various embodiments of the present specification, the pad has a larger area than the heat sink and is disposed to overlap.

According to various embodiments of the present specification, the heat dissipation hole is disposed to overlap the ventilation hole.

According to various embodiments of the present specification, the heat sink is disposed to surround the vibration device. The heat sink includes a first heat sink having a first diameter, a second heat sink having a second diameter smaller than the first diameter, and a third heat sink having a third diameter smaller than the second diameter.

According to various embodiments of the present disclosure, the pad connects the bottom surface attached to the rear surface of the display panel, a vertical side surface extending from one end of the bottom side toward the first support member, and the other end of the bottom surface from the uppermost side of the vertical side surface. It has a wedge shape with an inclined plane.

According to various embodiments of the present specification, the inclined surface of the pad is disposed to overlap the heat sink.

According to various embodiments of the present specification, according to the operation of the vibration device, the pad closes or opens the heat sink.

According to various embodiments of the present specification, when the distance between the display panel and the first support member has a maximum value due to the operation of the vibration device, the pad is spaced apart from the first support member by a predetermined distance to open all the heat sinks. When the distance between the display panel and the first support member has a minimum value, the pad closes all of the heat sinks.

According to various embodiments of the present disclosure, as the distance between the display panel and the first support member changes from the maximum value to the minimum value, the first heat sink to the third heat sink are sequentially closed. As it changes from the minimum value to the maximum value, it sequentially opens from the third heat sink to the first heat sink.

According to various embodiments of the present disclosure, as the distance between the display panel and the first support member changes from the maximum value to the minimum value, the air between the display panel and the first support member is discharged to the outside through the outlet. As it changes from the minimum value to the maximum value, air is drawn in from the outside through the vent.

In addition, a display device according to various embodiments of the present specification includes a display panel, a support member, a fixing member, at least one outlet, a pad, and a vibration device. The display panel displays an image. The support member is disposed on the rear surface of the display panel and includes at least one heat dissipation hole. The middle frame attaches the edge area of the support member to the edge area of the display panel. The outlet passes through the middle frame. The pad is attached to the rear surface of the display panel and is disposed on the support member to correspond to the heat dissipation hole. One end of the vibrating device is attached to the rear surface of the display panel through the support member, and the other end is fixed to the support member.

According to various embodiments of the present specification, the support member includes an inner panel and a back cover. The inner panel is disposed on the rear surface of the display panel, and a heat dissipation hole is formed therein. The back cover is disposed on the rear surface of the inner substrate, and a ventilation hole for opening the heat dissipation hole is formed.

According to various embodiments of the present specification, the pad has a larger area than the heat sink and overlaps to cover the heat sink.

According to various embodiments of the present specification, the heat sink includes a first heat sink disposed around the vibration device, a second heat sink disposed around the first heat sink, and a third heat sink disposed around the second heat sink.

According to various embodiments of the present specification, the first heat sink has a first opening area. The second heat sink has a second opening area smaller than the first opening area. The third heat sink has a third opening area smaller than the second opening area.

According to various embodiments of the present specification, the pad has a wedge shape having a bottom surface, a vertical side surface and an inclined surface. The bottom surface is attached to the rear surface of the display panel at a predetermined distance from the vibrating device. The vertical side extends toward the support member from one end close to the vibrating device at the base. The inclined plane connects the other end of the bottom surface at the uppermost side of the vertical side.

According to various embodiments of the present specification, the separation distance between the inclined surface of the pad and the support member gradually increases from the vertical side to the other end of the bottom surface.

The embodiments of the present specification have been described in more detail with reference to the accompanying drawings. However, the present specification is not necessarily limited to these embodiments, and various modifications may be made without departing from the spirit of the present specification. Accordingly, the embodiments disclosed in the present specification are for explanation rather than limiting the technical spirit of the present specification, and the scope of the technical spirit of the present specification is not limited by these implementations. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The protection scope of the present specification should be construed by the claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present specification.

100: display module 110: display panel
300: support member 500: vibration device
700: middle frame 310: inner panel
350: back cover H: heat sink
H1: first heat sink H2: second heat sink
H3: 3rd heat sink V: vent hole
T: exhaust vent PD: pad

Claims (18)

a display panel for displaying an image;
a first support member disposed on a rear surface of the display panel and including at least one heat dissipation hole;
a second support member disposed on a rear surface of the first support member and including at least one vent hole;
a vibrating device having one end attached to the rear surface of the display panel and the other end fixed to the second support member; and
and a pad attached to a rear surface of the display panel and disposed to correspond to the heat sink on the first support member. The method of claim 1,
a middle frame bonding the edge area of the first support member to the edge area of the display panel; and
The display device further comprising at least one outlet passing through the middle frame. The method of claim 1,
The pad has a larger area than the heat dissipation hole and is disposed to overlap. The method of claim 1,
The heat dissipation hole is disposed to overlap the ventilation hole. The method of claim 1,
The heat sink is arranged to surround the vibration device,
a first heat sink having a first diameter;
a second heat sink having a second diameter smaller than the first diameter; and
and a third heat sink having a third diameter smaller than the second diameter. 6. The method of claim 5,
The pad is
a bottom surface attached to the rear surface of the display panel;
a vertical side surface extending from one end of the base toward the first support member; and
A display device having a wedge shape having an inclined surface connecting the other end of the bottom from the uppermost side of the vertical side. 7. The method of claim 6,
The beveled surface of the pad is disposed to overlap the heat dissipation hole. 8. The method of claim 7,
A display device in which the pad closes or opens the heat sink according to the operation of the vibration device. 9. The method of claim 8,
When the distance between the display panel and the first support member has a maximum value due to the operation of the vibration device,
The pad is spaced apart from the first support member by a predetermined distance to open all the heat sinks,
When the distance between the display panel and the first support member has a minimum value,
The pad closes all of the heat sinks. 10. The method of claim 9,
As the distance between the display panel and the first support member changes from the maximum value to the minimum value,
Close sequentially from the first heat sink to the third heat sink,
As it changes from the minimum value to the maximum value,
A display device that sequentially opens from the third heat sink to the first heat sink. 10. The method of claim 9,
As the distance between the display panel and the first support member changes from the maximum value to the minimum value,
air between the display panel and the first support member is discharged to the outside through the outlet;
As it changes from the minimum value to the maximum value,
A display device for sucking air from the outside through the ventilation hole. a display panel for displaying an image;
a support member disposed on a rear surface of the display panel and including at least one heat dissipation hole;
a middle frame bonding the edge area of the support member to the edge area of the display panel;
at least one outlet passing through the middle frame;
a pad attached to a rear surface of the display panel and disposed on the support member to correspond to the heat sink; and
and a vibrating device having one end attached to a rear surface of the display panel through the support member and having the other end fixed to the support member. 13. The method of claim 12,
The support member is
an inner panel disposed on a rear surface of the display panel and provided with the heat dissipation hole; and
and a back cover disposed on a rear surface of the inner substrate and having a ventilation hole for opening the heat dissipation hole. 13. The method of claim 12,
The pad has a larger area than the heat sink and overlaps to cover the heat sink. 13. The method of claim 12,
The heat sink is
a first heat sink disposed around the vibrating device;
a second heat sink disposed around the first heat sink; and
and a third heat sink disposed around the second heat sink. 16. The method of claim 15,
The first heat dissipation port has a first opening area,
The second heat sink has a second opening area smaller than the first opening area;
The third heat dissipation hole has a third opening area smaller than the second opening area. 16. The method of claim 15,
The pad is
a bottom surface attached to the rear surface of the display panel to be spaced apart from the vibrating device by a predetermined distance;
a vertical side surface extending toward the support member from one end close to the vibrating device at the base;
A display device having a wedge shape having an inclined surface connecting the other end of the bottom from the uppermost side of the vertical side. 18. The method of claim 17,
The separation distance between the inclined surface of the pad and the support member,
The display device gradually moves away from the vertical side toward the other end of the bottom surface.

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