Device

Abstract

To provide a vibration device that improves the sound quality of acoustics and improves the characteristics of sound pressure.SOLUTION: A device includes a display panel 100 that displays an image, vibration devices 210-1 and 210-2 that are placed on the back of the display panel and vibrate the display panel, and a support member 300 located on the back of the display panel and including a first support member 310 and a second support member 330. The first member 510 and the second member 550 are arranged on the same surface as the support member 300. The first support member is separated from the rearmost surface of the display panel or from the vibration device with a gap space (GS) in between.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] This specification relates to an apparatus. [Background technology]

[0002] The device (or display device) includes a separate speaker or audio device to display images on a display panel and provide sound. When a speaker is arranged in the device (or display device), a problem occurs in that the space occupied by the speaker imposes restrictions on the design and spatial arrangement of the device.

[0003] The speaker applied to the device (or display device) may be, for example, an actuator including a magnet and a coil. However, when an actuator is applied to a device, it has a drawback of being thick. Therefore, a piezoelectric element that can realize a thin thickness is attracting attention.

[0004] Piezoelectric elements are easily damaged by external impact due to their brittle characteristics, which results in low reliability in sound reproduction. In addition, when a speaker such as a piezoelectric element is applied to a flexible display device, the brittle characteristics of the piezoelectric element can cause damage. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the inventors of the present specification recognized the above-mentioned problems and conducted several experiments to realize a vibration device capable of improving the sound quality of the sound and the sound pressure characteristics. Through several experiments, they invented an apparatus including a new vibration device capable of improving the sound quality of the sound and the sound pressure characteristics.

[0006] The problem to be solved by the embodiments of the present specification is to provide a device that can vibrate a vibrating member (or a vibrating object) to generate vibration or sound, thereby improving sound quality and acoustic characteristics.

[0007] The problems to be solved by the embodiments of the present specification are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person of ordinary skill in the art from the following description. [Means for solving the problem]

[0008] An apparatus according to an embodiment of the present specification includes a display panel that displays an image, a vibration device that is arranged on the rear side of the display panel and that vibrates the display panel, and a support member that is arranged on the rear side of the display panel and that includes a first member and a second member, the first member and the second member being arranged on the same plane as the support member.

[0009] An apparatus according to an embodiment of the present specification includes a vibration member, a vibration device arranged on the vibration member, and a support member arranged on a rear surface of the vibration member, the support member including a first member overlapping the vibration device.

[0010] Specific details of the various embodiments of the present disclosure are included in the following description and drawings. Effect of the Invention

[0011] The device according to the embodiment of the present specification can generate sound such that the direction of sound travel from the device is toward the front area of ​​the front surface of the display panel or the vibrating member (or the vibrating object) by configuring a vibration device that vibrates the display panel or the vibrating member (or the vibrating object). The front area of ​​the front surface of the display panel can be disposed in an area where a user views an image displayed by the display panel. The rear surface (or back surface) can refer to the surface facing away from the display panel, and the front surface can refer to the surface facing the display panel.

[0012] The device according to the embodiments of the present specification can improve the reproduction band of the low-frequency band by configuring a support member including a first member and a second member, thereby providing a device that can improve the acoustic characteristics and / or sound pressure characteristics of the low-frequency band.

[0013] The effects of the present specification are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

[0014] The above-mentioned problems to be solved, means for solving the problems, and effects do not specify essential features of the claims, and the scope of the claims is not limited by the matters described in the contents of the invention. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 shows an apparatus according to an embodiment of the present disclosure. [Diagram 2] 2 is a cross-sectional view taken along line II' shown in FIG. 1. [Diagram 3] 2 is another cross-sectional view of the line II' shown in FIG. 1. [Figure 4] FIG. 1 illustrates a vibration device according to an embodiment of the present disclosure. [Diagram 5] 5 is a cross-sectional view taken along line II-II' shown in FIG. 4. [Figure 6A] FIG. 2 is a diagram showing a vibration part according to an embodiment of the present specification. [Figure 6B] FIG. 2 is a diagram showing a vibration part according to an embodiment of the present specification. [Figure 6C] FIG. 2 is a diagram showing a vibration part according to an embodiment of the present specification. [Figure 6D] FIG. 2 is a diagram showing a vibration part according to an embodiment of the present specification. [Figure 6E] FIG. 2 is a diagram showing a vibration part according to an embodiment of the present specification. [Figure 6F] FIG. 2 is a diagram showing a vibration part according to an embodiment of the present specification. [Figure 7] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 8] 1 illustrates a vibration device according to another embodiment of the present specification. [Figure 9] 9 is a cross-sectional view taken along line III-III' shown in FIG. 8. [Figure 10] 5 is another cross-sectional view taken along the line II-II' shown in FIG. 4. [Figure 11]9 is a diagram showing a vibration layer of the vibration section shown in FIG. 8. [Figure 12A] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 12B] FIG. 13 shows a rear view of a device according to another embodiment of the present disclosure. [Figure 13] FIG. 12C is a cross-sectional view taken along line IV-IV' shown in FIG. 12B. [Figure 14] 12C is another cross-sectional view of the line IV-IV' shown in FIG. 12B. [Figure 15] 12C is another cross-sectional view of the line IV-IV' shown in FIG. 12B. [Figure 16] 12C is another cross-sectional view of the line IV-IV' shown in FIG. 12B. [Figure 17] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 18A] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 18B] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 18C] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 19] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 20] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 21A] 21 is a cross-sectional view taken along line VV' shown in FIG. 20. [Figure 21B] 21 is another cross-sectional view of the line VV' shown in FIG. 20. [Figure 22A] 21 is another cross-sectional view of the line VV' shown in FIG. 20. [Figure 22B] 21 is another cross-sectional view of the line VV' shown in FIG. 20. [Figure 23A] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 23B] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 23C] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 24A]FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Figure 24B] FIG. 13 shows an apparatus according to another embodiment of the present disclosure. [Diagram 25] FIG. 2 illustrates the acoustic output characteristics of a device according to an embodiment of the present specification. [Figure 26] FIG. 13 illustrates the acoustic output characteristics of a device according to another embodiment of the present specification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The advantages and features of the present specification, and the method of achieving them, will become clear by referring to the following detailed description of the embodiment with accompanying drawings. However, the present specification is not limited to the embodiment disclosed below, and may be realized in various different forms. The embodiment is merely provided to complete the disclosure of the specification and to fully inform those skilled in the art of the invention to which the specification pertains, and the specification is defined only by the scope of the claims.

[0017] In order to explain the embodiments of the present specification, the shapes, sizes, ratios, angles, numbers, etc. shown in the drawings are illustrative and the present specification is not limited to the matters shown in the drawings. The same reference numerals refer to the same components throughout the specification. In addition, in explaining the present specification, if a specific description of related known technology is determined to unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When "including," "having," "consisting of," etc. are used in the present specification, other parts can be added unless "only" is used. When a component is expressed in the singular, it includes the case where it includes a plurality unless otherwise expressly stated.

[0018] When interpreting elements, they are to be interpreted as including a range of error even if there is no separate explicit description.

[0019] When describing a positional relationship, for example when the positional relationship of two parts is described using "above", "on top", "below", "beside", etc., one or more other parts may also be located between the two parts, unless "immediately" or "directly" is used.

[0020] When describing a temporal relationship, for example when the temporal sequence is described using "after," "following," "next to," or "before," it can also include cases where the context is not consecutive, since "immediately" or "directly" is not used.

[0021] Although the terms "first", "second" and the like are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component referred to below may be the second component within the technical concept of the present invention.

[0022] In describing components in this specification, terms such as first, second, A, B, (a), (b), etc. may be used. Such terms are used to distinguish the components from other components, and do not limit the nature, order, sequence, or number of the components. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but that other components may be "intervening" between each component that may be indirectly connected or connected without any specific explicit description.

[0023] The term "at least one" should be understood to include all combinations that can be present from one or more of the associated items. For example, the meaning of "at least one of the first item, the second item, and the third item" can include all combinations of items that can be present from the first item, the second item, and the third item, not just the first item, the second item, or the third item, respectively.

[0024] In this specification, the term "apparatus" may include a display device such as a liquid crystal module (LCM) or an organic light emitting display (OLED) module including a display panel and a driver for driving the display panel, and may also include a set electronic apparatus or set device or set apparatus such as a notebook computer, a television, a computer monitor, an automotive apparatus or other shapes of a vehicle, which is a complete product or final product including an LCM or an OLED module, and a mobile electronic apparatus such as a smartphone or an electronic pad.

[0025] Therefore, the device in this specification can include a display device itself such as an LCM and an OLED module, and a set device which is an application product or an end user device including an LCM, an OLED module, and the like.

[0026] In some embodiments, the LCM and OLED module including the display panel and the driver may be referred to as a "display device," and the electronic device as a completed product including the LCM and OLED module may be referred to as a "set device." For example, the display device may include a liquid crystal display panel (or an organic light emitting display panel) and a source PCB that is a controller for driving the display panel. The set device may further include a set PCB (or a control PCB) that is a set controller electrically connected to the source PCB and drives the entire set device.

[0027] The display panel used in the embodiments of the present specification may be any shape of display panel, such as a liquid crystal display panel, an organic light emitting diode display panel, and an electroluminescent display panel, and is not limited to the embodiments. For example, the display panel may be a display panel that can generate sound by being vibrated by the vibration device according to the embodiments of the present specification. In addition, the display panel applied to the display device according to some embodiments of the present specification is not limited to the shape or size of the display panel.

[0028] For example, when the display panel is a liquid crystal display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and pixels formed at intersections of the gate lines and the data lines. The display panel may also include an array substrate including thin film transistors as switching elements for controlling the light transmittance of 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.

[0029] When the display panel is an organic light emitting display panel, the display panel may include a plurality of gate lines, a plurality of data lines, and pixels formed by the gate lines and the data lines. The display panel may also include an array substrate including a thin film transistor, which is an element for selectively applying a voltage to each pixel, an organic light emitting device (OLED) layer on the array substrate, and a sealing substrate (or encapsulation substrate) disposed on the array substrate to cover the organic light emitting device layer. The sealing substrate may protect the thin film transistor and the organic light emitting device layer from external impact and prevent moisture or oxygen from entering the organic light emitting device layer. The organic light emitting device layer formed on the array substrate may include an inorganic light emitting device layer, a quantum dot light emitting device layer, and the like. In another embodiment of the present specification, the layer formed on the array substrate may include a micro light emitting diode.

[0030] The display panel may further include a backing, such as a metal plate, attached to the display panel. Other structures, for example, other structures made of other materials, may also be included.

[0031] The features of the various embodiments of this specification may be combined or combined with each other partially or fully, and various technical interlocking and driving mechanisms may be possible, and each embodiment may be implemented independently of each other, or may be implemented together in a related relationship.

[0032] The embodiments of the present specification will be described in detail with reference to the accompanying drawings and examples as follows: The scales of the components shown in the drawings may be different from the actual scales for convenience of explanation, and are not limited to the scales shown in the drawings.

[0033] When a speaker is realized to provide sound to a display device, it can be realized in the shape of a film, so that the thickness of the display device can be made thin. A film-type vibration device can be manufactured in a large area, so it can be applied to a large-area display device, but there is a problem that it is difficult to apply it to a large-area display device due to its low piezoelectric characteristics and low vibration. When ceramic is applied to improve the piezoelectric characteristics, there is a problem that durability is weak and the size of the ceramic is limited. When a vibration device made of a piezoelectric composite containing a piezoelectric ceramic is applied to a display device, the piezoelectric composite mainly vibrates in the left-right direction based on the horizontal direction, for example, in the left-right direction based on the horizontal direction of the display device, so that the display device cannot be sufficiently vibrated in the up-down (or front-back) direction, making it difficult to apply to the display device and making it impossible to output the required sound in front of the display device. When a film-type piezoelectric body is applied to a device, there is a problem that the sound pressure characteristics are low compared to a speaker such as an actuator. When a laminated type piezoelectric body in which multiple films each composed of multiple layers of film-type piezoelectric bodies are laminated is applied to a device to improve the sound pressure, there is a problem that the power consumption increases and the thickness of the device increases. In addition, when a single vibration device is disposed on the back of a display panel, for example, a mobile device, it is possible to output mono sound, but it is difficult to output sound including stereo sound. In order to realize sound including stereo sound, a vibration device can be further disposed on the edge of the display panel, but it is difficult to dispose an exciter on a flexible device having a curved surface of the display panel, and when a speaker made of a piezoelectric element, for example, piezoelectric ceramic, is disposed, there are problems that the piezoelectric ceramic is easily broken.

[0034] Therefore, the inventors of the present specification conducted several experiments to realize a vibration device that can realize acoustic characteristics including stereophonic sound and can be applied to a flexible device and can vibrate in the vertical direction based on the horizontal direction of a display panel. Through several experiments, the inventors invented an apparatus including a vibration device with a new structure that can realize acoustic characteristics including stereophonic sound and can be applied to a flexible device, which will be described below.

[0035] Fig. 1 is a diagram showing an apparatus according to an embodiment of the present specification, and Fig. 2 is a cross-sectional view taken along line II' shown in Fig. 1.

[0036] 1 and 2, a device according to an embodiment of the present specification may include a display panel 100 for displaying an image and a vibration device 200 disposed on the rear surface (or back surface) of the display panel 100.

[0037] The display panel 100 may display an image, for example, an electronic image or a digital image. For example, the display panel 100 may display an image by outputting light. The display panel 100 may be a display panel of any shape or a 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 100 may be a flexible display panel. For example, the display panel 100 may be, but is not limited to, 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.

[0038] The display panel 100 according to the embodiment of the present specification may include a display area (AA) that displays an image by driving a plurality of pixels. The display panel 100 may further include, but is not limited to, a non-display area (IA) surrounding the display area (AA).

[0039] The display panel 100 according to the embodiment of the present specification may display an image in a top emission type, a bottom emission type, a dual emission type, or the like, depending on the structure of a pixel array layer including an anode electrode, a cathode electrode, and a light emitting element. The top emission type may display an image by emitting light generated in the pixel array layer to the front of the base substrate, and the bottom emission type may display an image by emitting light generated in the pixel array layer to the rear of the base substrate.

[0040] The display panel 100 according to the embodiment of the present specification may include a pixel array section arranged in a pixel region formed by a plurality of gate lines and / or a plurality of data lines. The pixel array section may include a plurality of pixels that display an image according to signals supplied to signal lines. The signal lines may include, but are not limited to, gate lines, data lines, and pixel driving power lines.

[0041] Each of the plurality of pixels may include a pixel circuit layer including a driving thin film transistor provided in a pixel region, an anode electrode electrically connected to the driving thin film transistor, a light emitting element formed on the anode electrode, and a cathode electrode electrically connected to the light emitting element.

[0042] 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 film, a semiconductor layer, a source electrode and a drain electrode. The semiconductor layer of the thin film transistor may include, but is not limited to, silicone such as a-Si, poly-Si, or low-temperature poly-Si, or may include an oxide such as IGZO (Indium-Gallium-Zinc-Oxide).

[0043] The anode electrode may be disposed in an opening region disposed in each pixel region and may be electrically connected to the driving thin film transistor.

[0044] The light emitting device according to the embodiment of the present specification may include a light emitting device layer formed on an anode electrode. The light emitting device layer may be realized to emit light of the same color, for example, white, for each pixel, or may be realized to emit light of different colors, for example, red, green, or blue, for each pixel. A cathode electrode (or a common electrode) may be commonly connected to the layer of light emitting devices provided in each pixel region. For example, the light emitting device layer may be a single structure including the same color for each pixel or a stack structure including two or more structures. In another embodiment of the present specification, the light emitting device layer may be a stack structure including two or more structures including one or more other colors for each pixel. The two or more structures including one or more different colors may be composed of one or more of blue, red, yellow-green, and green, or a combination thereof, but are not limited thereto. Examples of combinations may include, but are not limited to, blue and red, red and yellow-green, red and green, and red / yellow-green / green. And, they may be applied regardless of their stacking order. A stack structure including two or more structures having the same color or one or more other colors may further include a charge generation layer between the two or more structures. The charge generation layer may be a PN junction structure and may include an N-type charge generation layer and a P-type charge generation layer.

[0045] A light emitting device according to another embodiment of the present specification may include a micro light emitting diode element electrically connected to each of an anode electrode and a cathode electrode. The micro light emitting diode element may be a light emitting diode realized in the form of an integrated circuit (IC) or a chip. The micro light emitting diode element may include a first terminal electrically connected to the anode electrode and a second terminal electrically connected to the cathode electrode. The cathode electrode may be commonly connected to the second terminals of the micro light emitting diode elements provided in each pixel region.

[0046] The sealing part is formed on the substrate so as to surround the pixel array part, and can prevent oxygen or moisture from penetrating into the light emitting element layer of the pixel array part. The sealing part according to the embodiment of the present specification may be formed in a multi-layer structure in which an organic material layer and an inorganic material layer are alternately stacked, but is not limited thereto. The inorganic material layer can block oxygen or moisture from penetrating into the light emitting element of the pixel array part. The organic material layer may be formed to have a relatively thicker thickness than the inorganic material layer so as to cover particles that may be generated during the manufacturing process, but is not limited thereto. For example, the sealing part may include a first inorganic film, an organic film on the first inorganic film, and a second inorganic film on the organic film. The organic film may be, but is not limited to, a foreign material cover layer. The touch panel may be disposed on the sealing part or on the back surface of the pixel array part.

[0047] The display panel 100 according to the embodiment of the present specification may include a first substrate, a second substrate, and a liquid crystal layer. The first substrate may be an upper substrate or an array substrate of thin film transistors. For example, the first substrate may include a pixel array (or a display unit or a display region) having a plurality of pixels formed in a pixel region where a plurality of gate lines and / or a plurality of data lines intersect. Each of the plurality of pixels may include a thin film transistor connected to the gate line and / or the data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

[0048] The first substrate may further include a pad portion provided on the first edge portion (or the first non-display portion) and a gate driving circuit provided on the second edge portion (or the second non-display portion).

[0049] The pad unit can supply signals supplied from the outside to the pixel array and / or the gate driving circuit. For example, the pad unit can include a plurality of data pads connected to a plurality of data lines via a plurality of data link lines and / or a plurality of gate input pads connected to a gate driving circuit via a gate control signal line. For example, the size of the first substrate can be larger than that of the second substrate, but is not limited thereto.

[0050] The gate driving circuit may be built in (or integrated) on the second edge of the first substrate so as to be connected to the gate lines. For example, the gate driving circuit may be realized by a shift register including transistors formed by the same process as the thin film transistors provided in the pixel region. The gate driving circuit according to other embodiments of the present specification may be included in the panel driving circuit in the form of an integrated circuit, without being built in the first substrate.

[0051] The second substrate may be a lower substrate or a color filter array substrate. For example, the second substrate may include a pixel definition pattern that may include an opening region overlapping a pixel region formed on the first substrate, and a color filter layer formed in the opening region. The second substrate may have a size smaller than that of the first substrate, but is not limited thereto. For example, the second substrate may overlap with a remaining portion of the first substrate excluding a first edge portion. The second substrate may be bonded to the remaining portion of the first substrate excluding a first edge portion by using a sealant to sandwich the liquid crystal layer.

[0052] The liquid crystal layer may be disposed between the first substrate and the second substrate, and may be made of liquid crystal in which the alignment direction of liquid crystal molecules is changed by an electric field formed by a data voltage and a common voltage applied to a pixel electrode of each pixel.

[0053] The second polarizing member is attached to the lower surface of the second substrate to polarize the light incident from the backlight and proceeding to the liquid crystal layer, and the first polarizing member is attached to the upper surface of the first substrate to polarize the light transmitted through the first substrate and emitted to the outside.

[0054] The display panel 100 according to the embodiment of the present specification can display an image by light passing through the liquid crystal layer by driving the liquid crystal layer with an electric field formed in each pixel by a data voltage and a common voltage applied to each pixel.

[0055] In the display panel 100 according to another embodiment of the present specification, the first substrate may be a color filter array substrate, and the second substrate may be a thin film transistor array substrate. For example, the display panel 100 according to another embodiment of the present specification may have a shape obtained by inverting the display panel 100 according to the embodiment of the present specification. In this case, the pad portion of the display panel 100 according to the other embodiment of the present specification may be covered by a separate structure.

[0056] The display panel 100 according to other embodiments of the present disclosure may include a curved shape or a bent portion that is bent or curved to have a certain radius of curvature.

[0057] The bent portion of the display panel 100 may be realized in at least one of an edge portion on one side and an edge portion on the other side of the display panel 100 that are parallel to each other. The edge portion on one side and / or the edge portion on the other side of the display panel 100 where the bent portion is realized may include only the non-display area (IA) or may include an edge portion of the display area (AA) and the non-display area (IA). The display panel 100 including the bent portion realized by bending the non-display area (IA) may have a one-sided bezel bent structure or a two-sided bezel bent structure. And, the display panel 100 including the bent portion realized by bending the edge portion of the display area (AA) and the non-display area (IA) may have a one-sided active bent structure or a two-sided active bent structure.

[0058] The vibration device 200 can vibrate the display panel 100. The vibration device 200 can be implemented on the rear surface of the display panel 100 so as to directly vibrate the display panel 100. For example, the vibration device 200 can be implemented on the rear surface of the display panel 100 to vibrate the display panel 100, thereby providing acoustic and / or haptic feedback to the user through the vibration of the display panel 100.

[0059] According to an embodiment of the present specification, the vibration device 200 can vibrate the display panel 100 by vibrating according to a voice vibration drive signal synchronized with an image displayed on the display panel 100. According to another embodiment of the present specification, the vibration device 200 can vibrate the display panel 100 by vibrating according to a haptic feedback signal (or a tactile feedback signal) synchronized with a user's touch on a touch panel (or a touch sensor layer) disposed on the display panel 100 or built into the display panel 100. Thus, the display panel 100 can vibrate according to the vibration of the vibration device 200 to provide at least one of audio and haptic feedback to the user (or viewer).

[0060] The vibration device 200 according to the embodiment of the present specification may be realized in a size corresponding to the display area (AA) of the display panel 100. The size of the vibration device 200 may be 0.9 to 1.1 times the size of the display area (AA), but is not limited thereto. For example, the size of the vibration device 200 may be the same as or smaller than the size of the display area (AA). For example, the size of the vibration device 200 may be the same as or approximately the same as the display area (AA) of the display panel 100, so that it can cover most of the area of ​​the display panel 100, and the vibration generated from the vibration device 200 can vibrate the entire area of ​​the display panel 100, so that the sense of sound localization is high and the satisfaction of the user can be improved. In addition, the contact area (or panel coverage) between the display panel 100 and the vibration device 200 can be increased, so that the vibration area of ​​the display panel 100 can be increased, so that the sound in the mid-low range generated by the vibration of the display panel 100 can be improved. In addition, the vibration device 200 applied to a large device can vibrate the entire large (or large-area) display panel 100, thereby further improving the sense of sound localization caused by the vibration of the display panel 100 and achieving an improved sound effect. Therefore, the vibration device 200 according to the embodiment of the present specification is disposed on the rear surface of the display panel 100 and can sufficiently vibrate the display panel 100 in the up-down (or front-back) direction, thereby outputting a desired sound in front of the device (or display device).

[0061] The vibration device 200 may include a vibration generator 210 disposed on or connected to the rear surface (or back surface) of the display panel 100. The vibration device 200 according to the embodiment of the present specification may be realized in a film shape. Since the vibration device 200 is realized in a film shape, it may have a thickness thinner than the display panel 100, so that an increase in the thickness of the display panel 100 may be minimized by disposing the vibration device 200. For example, the vibration device 200 may be expressed as, but is not limited to, an acoustic generation module using the display panel 100 (or a vibrating member) as an acoustic diaphragm, an acoustic generation device, a film actuator, a film type piezoelectric composite actuator, a film speaker, a film type piezoelectric speaker, or a film type piezoelectric composite speaker. In another embodiment of the present specification, the vibration device 200 is not disposed on the rear surface of the display panel 100. It may be applied to a non-display panel instead of a display panel. For example, the vibration device 200 may be applied to, but is not limited to, wood, plastic, glass, cloth, paper, leather, automotive interior materials, building interior ceilings, and aircraft interior materials. In this case, the non-display panel may be applied as a diaphragm, and the vibration device 200 may vibrate the non-display panel to output sound.

[0062] For example, a device according to an embodiment of the present specification may include a vibrating member (or a vibrating object) and a vibrating device 200 disposed on the vibrating member. For example, the vibrating member may include a display panel having a plurality of pixels for displaying an image, or may include a non-display panel. For example, the vibrating member may include a display panel having a plurality of pixels for displaying an image, or may be one or more of, but is not limited to, wood, plastic, glass, cloth, paper, leather, an interior material of an automobile, a glass window of an automobile, an interior ceiling of a building, a glass window of a building, an interior material of a building, an interior material of an aircraft, and a glass window of an aircraft. For example, the non-display panel may be, but is not limited to, a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), or an inorganic light-emitting lighting panel (or device), or the like. For example, the vibrating member may include a display panel having a plurality of pixels for displaying an image, or may be one or more of, but is not limited to, a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), or an inorganic light-emitting lighting panel (or device).

[0063] According to another embodiment of the present specification, the vibrating member may further include a plate, and the plate may include, but is not limited to, a metal material or any one or more of a single non-metallic material or a composite non-metallic material among wood, plastic, glass, cloth, paper, and leather. According to another embodiment of the present specification, the vibrating member may be, but is not limited to, one or more of wood, plastic, glass, cloth, paper, and leather. For example, the paper may be a cone paper for a speaker. For example, the cone paper may be, but is not limited to, pulp or foamed plastic.

[0064] The vibration device 200 may be disposed on the rear surface of the display panel 100 so as to overlap the display area AA of the display panel 100. For example, the vibration device 200 may overlap half or more of the display area AA of the display panel 100. According to another embodiment of the present specification, the vibration device 200 may overlap the entire display area AA of the display panel 100.

[0065] The vibration device 200 according to the embodiment of the present specification may vibrate by alternately repeating contraction and expansion due to the inverse piezoelectric effect when an AC voltage is applied, and may vibrate the display panel 100 using such vibration. For example, the vibration device 200 may vibrate the display panel 100 by vibrating according to a voice signal synchronized with an image displayed on the display panel 100. According to another embodiment of the present specification, the vibration device 200 may vibrate the display panel 100 by vibrating according to a haptic feedback signal (or a tactile feedback signal) synchronized with a user's touch on a touch panel (or a touch sensor layer) disposed on the display panel 100 or built into the display panel 100. As a result, the display panel 100 may vibrate according to the vibration of the vibration device 200 to provide at least one of sound and haptic feedback to the user (or viewer).

[0066] Therefore, the device according to the embodiment of the present specification can output the sound generated by the vibration of the display panel 100 due to the vibration of the vibration device 200 to the front of the display panel 100. In addition, since the device according to the embodiment of the present specification can vibrate most of the area of ​​the display panel 100 by the film-shaped vibration device 200, the sound pressure characteristics and the sense of sound localization of the sound caused by the vibration of the display panel 100 can be further improved.

[0067] The device according to the embodiment of the present specification may further include a connection member 150 (or a first connection member) between the display panel 100 and the vibration device 200.

[0068] According to an embodiment of the present specification, the connecting member 150 may be disposed between the rear surface of the display panel 100 and the vibration device 200 to connect or couple the vibration device 200 to the rear surface of the display panel 100. For example, the vibration device 200 may be supported or disposed on the rear surface of the display panel 100 by being connected or coupled to the rear surface of the display panel 100 via the connecting member 150. For example, the vibration generator 210 may be disposed on the rear surface of the display panel 100 via the connecting member 150.

[0069] The connecting member 150 according to the embodiment of the present specification may be made of a material including an adhesive layer having excellent adhesion or bonding strength to each of the rear surface of the display panel 100 and the vibrating device 200. For example, the connecting member 150 may include, but is not limited to, a foam pad, a double-sided tape, or an adhesive. For example, the adhesive layer of the connecting member 150 may include, but is not limited to, epoxy, acrylic, silicone, or urethane. For example, the adhesive layer of the connecting member 150 may include an acrylic-based material (or material) having relatively excellent adhesion and high hardness characteristics among acrylic and urethane. As a result, the vibration of the vibrating device 200 may be well transmitted to the display panel 100.

[0070] The adhesive layer of the connecting member 150 may further include an additive such as, but not limited to, a tackifier, a wax component, or an antioxidant. The additive can prevent the connecting member 150 from being separated (or peeled off) from the display panel 100 due to vibration of the vibration device 200. For example, the tackifier may be a rosin derivative, the wax component may be paraffin wax, and the antioxidant may be a phenol-based antioxidant such as thioester, but is not limited to these.

[0071] The connecting member 150 according to another embodiment of the present specification may further include a hollow portion provided between the display panel 100 and the vibration device 200. The hollow portion of the connecting member 150 may provide an air gap between the display panel 100 and the vibration device 200. The air gap allows sound waves (or sound pressure) caused by vibration of the vibration device 200 to be concentrated on the display panel 100 without being dispersed by the connecting member 150, thereby minimizing vibration loss caused by the connecting member 150 and increasing the acoustic characteristics and / or sound pressure characteristics of the sound generated by the vibration of the display panel 100.

[0072] The device according to the embodiment of the present specification may further include a support member 300 disposed on the rear surface of the display panel 100 .

[0073] The support member 300 may be disposed on the rear surface of the display panel 100. For example, the support member 300 may cover the rear surface of the display panel 100. For example, the support member 300 may cover the entire rear surface of the display panel 100 with a gap space (GS) therebetween. For example, the support member 300 may include at least one of a glass material, a metal material, and a plastic material. For example, the support member 300 may be a rear structure or a housing, but is not limited thereto. The support member 300 may be expressed by other terms such as a cover bottom, a plate bottom, a back cover, a base frame, a metal frame, a metal chassis, a chassis base, or an m-chassis. For example, the support member 300 may be realized as a frame or a plate-like structure of any shape disposed on the rear surface of the display panel 100.

[0074] The edge or sharp corner of the support member 300 may have a beveled or curved shape by a chamfering process or a corner rounding process. For example, the glass support member 300 may be sapphire glass. According to another embodiment of the present specification, the metal support member 300 may be made of any one of aluminum (Al), aluminum (Al) alloy, magnesium (Mg), magnesium (Mg) alloy, and alloy of iron (Fe) and nickel (Ni).

[0075] The inventors of this specification conducted several experiments to improve the acoustic characteristics of the low-frequency range, because the acoustic characteristics of the low-frequency range are degraded when the vibration device 200 is configured as a film-type vibration device. Through several experiments, they invented a device with a new structure that can improve the acoustic characteristics of the low-frequency range. This will be described below.

[0076] It has been recognized that the air pressure of the device must be reduced in order to improve the acoustic characteristics of the low-frequency range. For example, the air pressure inside the device can be discharged to the outside to improve the acoustics of the vibration device. Since the vibration device 200 is disposed between the display panel 100 and the support member 300, a structure capable of discharging the air pressure to the outside may be required. In order to discharge the air pressure to the outside and reduce the air pressure of the device, the support member 300 may include a plurality of holes 301. The plurality of holes 301 of the support member 300 may be disposed in a predetermined area of ​​the support member 300 to reduce the air pressure in the gap space (GS) inside the device. For example, the plurality of holes 301 of the support member 300 can expand the low-frequency range by reducing the air pressure in the gap space (GS), thereby improving the acoustic characteristics of the low-frequency range. If the plurality of holes 301 are not disposed in the support member 300, the air pressure in the gap space (GS) due to the sound waves or sounds generated by the vibration of the vibration device 200 may increase, thereby deteriorating the acoustic characteristics of the low-frequency range. According to the embodiment of the present specification, by forming the hole 301 in the support member 300, even if sound waves or sounds are generated by the vibration of the vibration device 200, the air pressure in the gap space (GS) can be reduced because the air can be discharged through the hole 301. As a result, the frequency band of the low frequency band can be expanded, and the acoustic characteristics of the low frequency band can be improved.

[0077] According to the embodiment of the present specification, the holes 301 may be arranged at a position where the air pressure in the gap space (GS) can be reduced when sound waves are generated by vibration of the vibration device 200. For example, the shape, number, size, etc. of the holes 301 may be variously configured. As shown in FIG. 2, the holes 301 may be arranged at a predetermined interval in a region of the support member 300 corresponding to the vibration device 200. For example, the holes 301 may be arranged along a part of the vibration device 200, for example, an edge portion of the vibration device 200.

[0078] The support member 300 according to the embodiment of the present disclosure may include a first support member 310 and a second support member 330 .

[0079] The first support member 310 may be disposed between the rear surface of the display panel 100 and the second support member 330. For example, the first support member 310 may be disposed between an edge portion on the rear side of the display panel 100 and an edge portion on the front surface of the second support member 330. The first support member 310 may support one or more of the edge portion of the display panel 100 and the edge portion of the second support member 330. In another embodiment of the present specification, the first support member 310 may cover the rear surface of the display panel 100. For example, the first support member 310 may cover the entire rear surface of the display panel 100. For example, the first support member 310 may be a member that covers the entire rear surface of the display panel 100. For example, the first support member 310 may include at least one or more materials selected from the group consisting of a glass material, a metal material, and a plastic material. For example, the first support member 310 may be an inner plate, but is not limited thereto. For example, the first support member 310 may be omitted.

[0080] The first support member 310 may be separated from the rearmost surface of the display panel 100 or from the vibration device 200 with a gap space (GS) therebetween. For example, the gap space (GS) may be expressed as an air gap, a vibration space, a resonator, or the like, but is not limited thereto.

[0081] The second support member 330 may be disposed on the rear surface of the first support member 310. The second support member 330 may be a member that covers the entire rear surface of the display panel 100. For example, the second support member 330 may include at least one of a glass material, a metal material, and a plastic material. For example, the second support member 330 may be, but is not limited to, an outer plate, a rear plate, a back plate, a back cover, or a rear cover. For example, a plurality of holes 301 may be disposed in the second support member 330.

[0082] The support member 300 according to the embodiment of the present specification may further include a connecting member 350 (or a second connecting member).

[0083] The connecting member 350 may be disposed between the first support member 310 and the second support member 330. For example, the first support member 310 and the second support member 330 may be bonded or connected to each other via the connecting member 350. For example, the connecting member 350 may be, but is not limited to, an adhesive resin, a double-sided tape, a foam pad, a double-sided foam tape, a double-sided foam pad, or a double-sided adhesive foam pad. For example, the connecting member 350 may have elasticity for shock absorption, but is not limited to this. For example, the connecting member 350 may be disposed in the entire area between the first support member 310 and the second support member 330. As another example of the present specification, the connecting member 350 may be formed in a mesh structure having an air gap between the first support member 310 and the second support member 330.

[0084] The display device according to the embodiment of the present specification may further include a middle frame 400. The middle frame 400 may be disposed between an edge portion of a rear surface of the display panel 100 and an edge portion of a front surface of the support member 300. The middle frame 400 may support at least one of the edge portions of the display panel 100 and the support member 300. The middle frame 400 may surround one or more of the side surfaces of the display panel 100 and the support member 300. The middle frame 400 may provide a gap space (GS) between the display panel 100 and the support member 300. The middle frame 400 may be expressed as, but is not limited to, a middle cabinet, a middle cover, or a middle chassis.

[0085] The middle frame 400 according to the embodiment of the present specification may include a first support part 410 and a second support part 430. For example, the first support part 410 may be a support part, but is not limited thereto. For example, the second support part 430 may be a side wall part, but is not limited thereto.

[0086] The first support part 410 is disposed between an edge part of the rear surface of the display panel 100 and an edge part of the front surface of the support member 300, thereby providing a gap space (GS) between the display panel 100 and the support member 300. The front surface of the first support part 410 may be coupled or connected to the edge part of the rear surface of the display panel 100 via a first connecting member 401 (or a first frame connecting member 401). The rear surface of the first support part 410 may be coupled or connected to the edge part of the front surface of the support member 300 via a second connecting member 403 (or a second frame connecting member 403). For example, the first support part 410 may have a single frame structure in a square shape, or may include a frame structure in the shape of a plurality of dividing bars, but is not limited thereto.

[0087] The second support portion 430 may be disposed parallel to the thickness direction (Z) of the device (or display device). For example, the second support portion 430 may be vertically coupled to the outer surface of the first support portion 410 parallel to the thickness direction (Z) of the device. The second support portion 430 may protect the outer surfaces of the display panel 100 and the support member 300 by surrounding one or more of the outer surfaces of the display panel 100 and the support member 300. The first support portion 410 may protrude from the inner surface of the second support portion 430 into the gap space (GS) between the display panel 100 and the support member 300.

[0088] Apparatus according to embodiments of the present disclosure may include panel connecting members in place of the middle frame 400 .

[0089] The panel connecting member is disposed between an edge portion of the rear surface of the display panel 100 and an edge portion of the front surface of the support member 300, thereby providing a gap space (GS) between the display panel 100 and the support member 300. The panel connecting member is disposed between an edge portion of the rear surface of the display panel 100 and an edge portion of the front surface of the support member 300, thereby bonding the display panel 100 and the support member 300. For example, the panel connecting member may be realized by, but is not limited to, a double-sided tape, a single-sided tape, or a double-sided adhesive foam pad. For example, the adhesive layer of the panel connecting member may include, but is not limited to, epoxy, acrylic, silicone, or urethane. For example, the adhesive layer of the panel connecting member may include a urethane-based material (or material) having a relatively softer characteristic than acrylic, among acrylic and urethane, in order to minimize the transmission of vibration of the display panel 100 to the support member 300. This can minimize the vibration of the display panel 100 transmitted by the support member 300.

[0090] In the case where the device according to the embodiment of the present specification includes a panel connecting member instead of the middle frame 400, the support member 300 may include a curved sidewall that is bent from one side (or end) of the second support member 330 to surround one or more of the outer surfaces (or outer walls) of the first support member 310, the panel connecting member, and the display panel 100. The curved sidewall according to the embodiment of the present specification may have a single sidewall structure or a hemming structure. The hemming structure may be a structure in which the end of a certain member is bent into a curved shape to overlap each other or be spaced apart from each other. For example, in order to improve the aesthetic appearance of the side design, the curved sidewall may include a first curved sidewall that is bent from one side (or end) of the second support member 330, and a second curved sidewall that is bent from the first curved sidewall to between the first curved sidewall and the outer surface of the display panel 100. The second curved side wall may be in contact with an inner surface of the first curved side wall or may be spaced apart from an inner surface of the first curved side wall so as to mitigate external impact in a lateral direction from being transmitted to an outer surface of the display panel 100. In this way, the second curved side wall can mitigate the outer surface of the display panel 100 from contacting the inner surface of the first curved side wall or from being transmitted to an outer surface of the display panel 100 from an external surface of the display panel 100.

[0091] In accordance with other embodiments of the present disclosure, the middle frame 400 may be omitted in the apparatus according to the embodiments of the present disclosure. For example, the apparatus according to the embodiments of the present disclosure may include a panel connecting member or adhesive in place of the middle frame 400. The apparatus according to the other embodiments of the present disclosure may include a partition in place of the middle frame 400.

[0092] Fig. 3 is another cross-sectional view taken along line II' in Fig. 1. Referring to Fig. 1 and Fig. 3, a device according to an embodiment of the present specification may include a display panel 100 and a vibration device 200 disposed on the rear surface of the display panel 100.

[0093] As described in FIG. 2, the device according to the embodiment of the present specification includes a plurality of holes 301 formed in the support member 300, so that the low frequency band of the vibration device 200 can be expanded. However, there are problems in that the plurality of holes 301 allow foreign matter to enter from the outside and are disadvantageous in terms of the design of the device. In order to improve this, if the plurality of holes 301 are covered, there is a problem that the sound in the low frequency band is significantly reduced. For example, it was recognized that when a plurality of holes are formed and the holes are covered with a cover or adhesive, the sound pressure characteristic is reduced by about 16 dB at a frequency of about 400 Hz compared to when a plurality of holes are formed and the holes are not covered with a cover or adhesive. Therefore, the inventors of the present specification conducted multiple experiments so that the sound in the low frequency band can be improved in the same or similar manner as when a plurality of holes are formed. Through multiple experiments, a device with a new structure that can improve the sound and / or sound pressure in the low frequency band without forming a hole was invented.

[0094] 3, the support member 300 can include a first region overlapping the center of the vibration device 200 and a second region overlapping an edge portion of the vibration device 200. For example, the second support member 330 can include a first region overlapping the center of the vibration device 200, a second region overlapping an edge portion of the vibration device 200, and a third region between the first region and the second region. For example, the first region can be a region reached by sound waves or vibrations of a first intensity from the vibration device 200. One or more of the second region and the third region can be a region reached by sound waves or vibrations of less than the first intensity.

[0095] The support member 300 may include a first member 510 and a second member 550. For example, the support member 300 may further include a second member 550 around the first member 510. For example, the second support member 330 may include a first member 510 and a second member 550. For example, the first member 510 may be arranged so that the vibration of the air in the gap space (GS) is caused by the vibration of the vibration device 200, and the vibration of the air is transmitted to the display panel 100 or the rear surface of the device. For example, the first member 510 may be arranged in a first region, which is a region where sound waves or vibrations of a first strength reach. For example, the first member 510 may be arranged in a first region of the support member 300. For example, the first member 510 may be arranged in a first region of the second support member 330. Thus, the first member 510 may be arranged in a region overlapping with the vibration device 200. For example, the first member 510 can be disposed in a first region that overlaps with a center of the vibration device 200. The first member 510 can be, but is not limited to, a radiating member or an acoustic radiating member.

[0096] The second member 550 can prevent abnormal vibration when the first member 510 vibrates. The second member 550 may be, but is not limited to, a suspension, an edge, or a resonating member. For example, the second member 550 may be disposed on the same plane as the first member 510. The second member 550 may be disposed on the same plane as the support member 300. For example, the second member 550 may be disposed on the same plane as the second support member 330. The second member 550 may be coupled to the support member 300. For example, the second member 550 may be coupled to the second support member 300. For example, the first member 510 may be coupled to the second member 550. For example, the first member 510 may be disposed between the second member 550. For example, the first member 510 and the second member 550 may be coupled to each other. The second member 550 may be integrally configured with the support member 300. For example, the second member 550 may be integrally formed with the second support member 330. For example, one or more of the first member 510 and the second member 550 may be overlapped with the vibration device 200. For example, the second member 550 may be disposed in a third region of the support member 300. For example, the second member 550 may be disposed in a third region of the second support member 330. The second member 550 may be made of a material having elasticity. For example, the second member 550 may be, but is not limited to, rubber, silicone, coated cloth, metal, polymer film, plastic, paper, or epoxy resin.

[0097] According to the embodiment of the present specification, the first member 510 may vibrate due to the vibration of the vibration device 200. As a result, the first member 510 may generate a sound or vibration on the rear surface of the support member 300. The vibration of the first member 510 may generate a second sound or vibration (S2) on the rear surface of the display panel 100 or the device. For example, the first member 510 may vibrate together with the vibration of the vibration device 200, and the second sound or vibration (S2) may be generated on the rear surface of the display panel 100 or the device. The second sound or vibration (S2) may be, but is not limited to, a rear bass sound, a rear sound, or a rear vibration. When the first member 510 vibrates, the second member 550 may reduce abnormal vibration, so that a bass band with improved sound quality may be reproduced. In addition, the vibration of the vibration device 200 may generate a first sound or vibration (S1) on the front surface of the display panel 100. The first sound or vibration (S1) may be, but is not limited to, a front sound or a front vibration. Therefore, according to the embodiments of the present specification, it is possible to provide a device having acoustic characteristics and / or sound pressure characteristics including low to high frequency bands. Furthermore, by configuring a support member without a hole, it is possible to prevent the problem of foreign matter and / or moisture from the outside penetrating into the hole, and it is possible to realize a clean back design of the device.

[0098] 4 is a diagram showing a vibration device according to an embodiment of the present specification, and FIG 5 is a cross-sectional view taken along line II-II' shown in FIG 4.

[0099] 2 to 5, a vibration device 200 according to an embodiment of the present specification may include a vibration generator 210. For example, the vibration generator 210 may include two or more vibrating structures (or two or more vibrating modules).

[0100] The vibration generator 210 according to the embodiment of the present specification may include a plurality of vibration structures 210A, 210B, 210C, and 210D that are arranged electrically separated from each other along each of a first direction (X) (or horizontal direction) and a second direction (Y) (or vertical direction) intersecting the first direction (X). Each of the plurality of vibration structures 210A, 210B, 210C, and 210D may vibrate by alternately repeating contraction and expansion due to a piezoelectric effect (or piezoelectric characteristics). The vibration generator 210 according to the embodiment of the present specification may directly vibrate the display panel 100 by vibrating in a thickness direction (Z) by alternately repeating contraction and expansion due to an inverse piezoelectric effect. The vibration generator 210 may include a plurality of vibration structures 210A, 210B, 210C, and 210D that are arranged at regular intervals or tiled. For example, the multiple vibration generators 210 may be, but are not limited to, a vibration array, a vibration array section, a vibration module array section, a vibration array structure, a tiling vibration array, a tiling vibration array module, or a tiling vibration film.

[0101] Each of the plurality of vibrating structures 210A, 210B, 210C, and 210D according to the embodiment of the present specification may have a rectangular or square shape. For example, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may have a rectangular shape with a width of 5 cm or more. For example, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may have a square shape with a size of 5 cm x 5 cm or more.

[0102] Each of the multiple vibration structures 210A, 210B, 210C, and 210D is arranged or tiled in a shape of i×j on the same plane, so that the vibration generator 210 can have a large area by tiling the multiple vibration structures 210A, 210B, 210C, and 210D having relatively small sizes. For example, i is the number of vibration structures arranged along the first direction (X) and is a natural number of 2 or more, and j is the number of vibration structures arranged along the second direction (Y) and can be a natural number of 1 or more that is the same as or different from i.

[0103] Each of the plurality of vibration structures 210A, 210B, 210C, and 210D may be arranged at regular intervals or tiled to be realized as one vibration device (or single vibration device) that is not driven independently but driven in the shape of one complete unit. According to an embodiment of the present specification, a first separation distance (D1) between the plurality of vibration structures 210A, 210B, 210C, and 210D based on a first direction (X) may be 0.1 mm or more and less than 3 cm. Also, a second separation distance (D2) between the plurality of vibration structures 210A, 210B, 210C, and 210D based on a second direction (Y) may be 0.1 mm or more and less than 3 cm. For example, the first separation distance (D1) and the second separation distance (D2) may be the same as each other. For example, the first separation distance (D1) and the second separation distance (D2) may be the same as each other within a range of process error.

[0104] According to an embodiment of the present specification, each of the multiple vibrating structures 210A, 210B, 210C, and 210D may be arranged or tiled to have a separation distance (or interval) (D1, D2) of 0.1 mm or more and less than 3 cm, and may be driven as one vibrating device. This may increase the reproduction band and sound pressure characteristics of the sound generated in conjunction with the single-body vibration of the multiple vibrating structures 210A, 210B, 210C, and 210D. For example, in order to increase the reproduction band of the sound generated in conjunction with the single-body vibration of the multiple vibrating structures 210A, 210B, 210C, and 210D and to increase the sound pressure characteristics in the low-frequency band of the sound, for example, below 500 Hz, the multiple vibrating structures 210A, 210B, 210C, and 210D may be arranged at intervals of 0.1 mm or more and less than 5 mm.

[0105] According to embodiments of the present specification, when multiple vibrating structures 210A, 210B, 210C, 210D are arranged with a spacing (D1, D2) of less than 0.1 mm or no spacing (D1, D2), the reliability of the vibrating structures 210A, 210B, 210C, 210D or the vibration generator 210 may be reduced due to cracks or damage caused by physical contact between each other when the vibrating structures 210A, 210B, 210C, 210D vibrate, respectively.

[0106] According to the embodiment of the present specification, when the multiple vibrating structures 210A, 210B, 210C, and 210D are arranged at intervals (D1, D2) of 3 cm or more, the multiple vibrating structures 210A, 210B, 210C, and 210D may not operate as one vibrating device due to the independent vibration of each of the multiple vibrating structures 210A, 210B, 210C, and 210D. This may result in a decrease in the reproduction band and sound pressure characteristics of the sound generated in conjunction with the vibration of the multiple vibrating structures 210A, 210B, 210C, and 210D. For example, when the multiple vibrating structures 210A, 210B, 210C, and 210D are arranged at intervals (D1, D2) of 3 cm or more, the sound characteristics and sound pressure characteristics in the low frequency band of the sound, for example, below 500 Hz, may decrease.

[0107] According to an embodiment of the present specification, when multiple vibrating structures 210A, 210B, 210C, and 210D are arranged at intervals of 5 mm, each of the multiple vibrating structures 210A, 210B, 210C, and 210D does not operate as a single vibration device, so the acoustic characteristics and sound pressure characteristics may be reduced in the low-frequency range of sound, for example, below 200 Hz.

[0108] According to another embodiment of the present specification, when the plurality of vibrating structures 210A, 210B, 210C, and 210D are arranged at intervals of 1 mm, the plurality of vibrating structures 210A, 210B, 210C, and 210D vibrate as one vibrating device, thereby increasing the reproduction band of sound and increasing the characteristics of low-frequency sound, for example, sound pressure at 500 Hz or less. For example, when the plurality of vibrating structures 210A, 210B, 210C, and 210D are arranged at intervals of 1 mm, the vibration generator 210 can be realized as a large-area vibrating body because the separation distance between the plurality of vibrating structures 210A, 210B, 210C, and 210D can be optimized. As a result, the multiple vibrating structures 210A, 210B, 210C, and 210D can be driven as a large-area vibrating body by single-body vibration, so that the acoustic characteristics and sound pressure characteristics of the sound reproduction band and low-frequency band generated in conjunction with the large-area vibration of the vibration generator 210 can be increased or improved.

[0109] Therefore, in order to realize the single body vibration (or one vibration device) of the multiple vibrating structures 210A, 210B, 210C, 210D, the separation distance between the multiple vibrating structures 210A, 210B, 210C, 210D may be set to 0.1 mm or more and less than 3 cm. Also, in order to realize the single body vibration (or one vibration device) of the multiple vibrating structures 210A, 210B, 210C, 210D and increase the sound pressure characteristics in the low frequency range of sound, the separation distance between the multiple vibrating structures 210A, 210B, 210C, 210D may be set to 0.1 mm or more and 5 mm or less.

[0110] The vibration generator 210 according to the embodiment of the present specification may include first to fourth vibration structures 210A, 210B, 210C, and 210D. For example, the first to fourth vibration structures 210A, 210B, 210C, and 210D may be electrically isolated from each other while being spaced apart from each other along the first direction (X) and the second direction (Y). For example, the first to fourth vibration structures 210A, 210B, 210C, and 210D may be arranged or tiled in a 2×2 shape.

[0111] According to other embodiments of the present disclosure, the first and second vibrating structures 210A, 210B may be spaced apart from each other along a first direction (X). The third and fourth vibrating structures 210C, 210D may be spaced apart from each other along a second direction (Y) while being spaced apart from each other along the first direction (X). The first and third vibrating structures 210A, 210C may face each other and be spaced apart from each other along the second direction (Y). The second and fourth vibrating structures 210B, 210D may face each other and be spaced apart from each other along the second direction (Y).

[0112] According to other embodiments of the present specification, the first to fourth vibration structures 210A, 210B, 210C, 210D may be arranged (or tiled) at intervals (D1, D2) of 0.1 mm or more and less than 3 cm along each of the first direction (X) and second direction (Y), or may be arranged (or tiled) at intervals (D1, D2) of 0.1 mm or more and less than 5 mm, in order to drive the vibration generator 210 as a single vibration device, vibrate as a single body, or vibrate the large-area vibrating body of the vibration generator 210.

[0113] Each of the first to fourth vibration structures 210A, 210B, 210C, and 210D according to the embodiments of the present specification can include a vibration part 211, a first electrode layer (E1), and a second electrode layer (E2).

[0114] The vibrating part 211 may include a piezoelectric material having a piezoelectric effect, a composite piezoelectric material, or an electroactive material. The vibrating part 211 may be expressed by terms such as, but not limited to, a vibrating layer, a piezoelectric material layer, a piezoelectric composite layer, an electroactive layer, a piezoelectric material part, a piezoelectric composite part, an electroactive part, a piezoelectric structure, a piezoelectric composite, or a piezoelectric ceramic composite.

[0115] The vibrating part 211 according to the embodiment of the present specification may be made of a ceramic-based material capable of realizing a relatively high vibration. For example, the vibrating part 211 may have a 1-3 composite structure or a 2-2 composite structure. For example, the piezoelectric deformation coefficient (d 33 ) may be 1,000 pC / N or more, but is not limited to this.

[0116] The first electrode layer (E1) may be disposed on a first surface (or upper surface) of the vibrating part 211 and may be electrically connected to the first surface of the vibrating part 211. For example, the first electrode layer (E1) may have a single electrode (or common electrode) shape disposed over the entire first surface of the vibrating part 211. The first electrode layer (E1) according to the embodiment of the present specification may be made of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent or semi-transparent conductive material may include, but is not limited to, ITO (indium tin oxide) or IZO (indium zinc oxide). The opaque conductive material may include, but is not limited to, aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium (Mg), or the like, or may be made of an alloy thereof.

[0117] The second electrode layer (E2) may be disposed on a second surface (or back surface) opposite to the first surface of the vibrating part 211 and electrically connected to the second surface of the vibrating part 211. For example, the second electrode layer (E2) may have a single electrode (or common electrode) shape disposed over the entire second surface of the vibrating part 211. The second electrode layer (E2) according to the embodiment of the present specification may be made of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the second electrode layer (E2) may be made of the same material as the first electrode layer (E1), but is not limited thereto. In another embodiment of the present specification, the second electrode layer (E2) may be made of a material different from that of the first electrode layer (E1).

[0118] The vibrating part 211 may be polarized (or subjected to a polling treatment) by a constant voltage applied to the first electrode layer (E1) and the second electrode layer (E2) in a constant temperature atmosphere or a temperature atmosphere that changes from high temperature to room temperature, but is not limited thereto.

[0119] The vibration generator 210 according to the embodiment of the present specification may further include a first protective member 213 and a second protective member 215.

[0120] The first protective member 213 may be disposed on the first surface of the vibration generator 210. For example, the first protective member 213 may cover the first electrode layer (E1) disposed on each of the first surfaces of the multiple vibration structures 210A, 210B, 210C, and 210D. Thereby, the first protective member 213 may be commonly connected to each of the first surfaces of the multiple vibration structures 210A, 210B, 210C, and 210D, or may commonly support each of the first surfaces of the multiple vibration structures 210A, 210B, 210C, and 210D. Therefore, the first protective member 213 may protect each of the first surfaces or the first electrode layer (E1) of the multiple vibration structures 210A, 210B, 210C, and 210D.

[0121] The first protective member 213 according to the embodiment of the present specification may be disposed on the first surface of each of the multiple vibrating structures 210A, 210B, 210C, and 210D via the first adhesive layer 212. For example, the first protective member 213 may be disposed directly on the first surface of each of the multiple vibrating structures 210A, 210B, 210C, and 210D by a film lamination process using the first adhesive layer 212 as an intermediary. Thus, each of the multiple vibrating structures 210A, 210B, 210C, and 210D may be integrated (or disposed) or tiled with the first protective member 213 so as to have a certain interval (D1, D2).

[0122] The second protective member 215 may be disposed on the second surface of the vibration generator 210. For example, the second protective member 215 may cover the second electrode layer (E2) disposed on each of the second surfaces of the multiple vibration structures 210A, 210B, 210C, and 210D. Thereby, the second protective member 215 may be commonly connected to each of the second surfaces of the multiple vibration structures 210A, 210B, 210C, and 210D, or may commonly support each of the second surfaces of the multiple vibration structures 210A, 210B, 210C, and 210D. Therefore, the second protective member 215 may protect the second surfaces or the second electrode layer (E2) of each of the multiple vibration structures 210A, 210B, 210C, and 210D.

[0123] The second protection member 215 according to the embodiment of the present specification may be disposed on the second surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D via the second adhesive layer 214. For example, the second protection member 215 may be disposed directly on the second surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D by a film lamination process using the second adhesive layer 214 as an intermediary. Thus, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may be integrated (or disposed) or tiled with the second protection member 215 so as to have a certain interval (D1, D2).

[0124] Each of the first and second protective members 213 and 215 according to the embodiment of the present specification may include a plastic film. For example, each of the first and second protective members 213 and 215 may be, but is not limited to, a polyimide film or a polyethylene terephthalate film.

[0125] The first adhesive layer 212 may be disposed on the first surfaces of the plurality of vibrating structures 210A, 210B, 210C, and 210D and between the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the first adhesive layer 212 may be formed on the back surface (or inner surface) of the first protective member 213 facing the first surface of the vibration generator 210, disposed on the first surfaces of the plurality of vibrating structures 210A, 210B, 210C, and 210D, and filled between the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0126] The second adhesive layer 214 may be disposed on the second surfaces of the plurality of vibrating structures 210A, 210B, 210C, and 210D and between the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the second adhesive layer 214 may be formed on a front surface (or an inner surface) of the second protective member 215 facing the second surface of the vibration generator 210, disposed on the second surfaces of the plurality of vibrating structures 210A, 210B, 210C, and 210D, and filled between the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0127] The first adhesive layer 212 and the second adhesive layer 214 may be connected or bonded to each other between the multiple vibration structures 210A, 210B, 210C, and 210D. Thus, each of the multiple vibration structures 210A, 210B, 210C, and 210D may be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may completely surround the entire multiple vibration structures 210A, 210B, 210C, and 210D. For example, the first adhesive layer 212 and the second adhesive layer 214 may be expressed as a cover member, but are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 may be disposed on a first surface of the cover member, and the second protective member 215 may be disposed on a second surface of the cover member. For example, the first adhesive layer 212 and the second adhesive layer 214 are shown as the first adhesive layer 212 and the second adhesive layer 214 for convenience of explanation, but are not limited thereto, and may be disposed as a single adhesive layer.

[0128] Each of the first adhesive layer 212 and the second adhesive layer 214 according to the embodiment of the present specification may include an electrically insulating material that is compressible and resilient while having adhesive properties. For example, each of the first adhesive layer 212 and the second adhesive layer 214 may include, but is not limited to, an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin.

[0129] The vibration device 200 or the vibration generator 210 according to the embodiment of the present specification may further include a first power supply line (PL1), a second power supply line (PL2), and a pad unit 201.

[0130] The first power supply line (PL1) may be disposed on the first protective member 213. For example, the first power supply line (PL1) may be disposed on a rear surface of the first protective member 213 facing the first surface of the vibration generator 210. The first power supply line (PL1) may be electrically connected to the first electrode layer (E1) of each of the plurality of vibration structures 210A, 210B, 210C, and 210D. For example, the first power supply line (PL1) may be directly electrically connected to the first electrode layer (E1) of each of the plurality of vibration structures 210A, 210B, 210C, and 210D. For example, the first power supply line (PL1) may be electrically connected to the first electrode layer (E1) of each of the plurality of vibration structures 210A, 210B, 210C, and 210D via an anisotropic conductive film. As another example of the present specification, the first power supply line (PL1) may be electrically connected to each of the first electrode layers (E1) of the multiple vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the first adhesive layer 212.

[0131] The first power supply line (PL1) according to the embodiment of the present specification may include first and second upper power lines 213a, 213b arranged along the second direction (Y). For example, the first upper power line 213a may be electrically connected to the first electrode layer (E1) of each of the first vibrating structure 210A and the third vibrating structure 210C (or the first group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. The second upper power line 213b may be electrically connected to the first electrode layer (E1) of each of the second vibrating structure 210B and the fourth vibrating structure 210D (or the second group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D.

[0132] The second power supply line (PL2) may be disposed on the second protective member 215. For example, the second power supply line (PL2) may be disposed on a front surface of the second protective member 215 facing the second surface of the vibration generator 210. The second power supply line (PL2) may be electrically connected to the second electrode layer (E2) of each of the plurality of vibration structures 210A, 210B, 210C, and 210D. For example, the second power supply line (PL2) may be directly electrically connected to the second electrode layer (E2) of each of the plurality of vibration structures 210A, 210B, 210C, and 210D. For example, the second power supply line (PL2) may be electrically connected to the second electrode layer (E2) of each of the plurality of vibration structures 210A, 210B, 210C, and 210D via an anisotropic conductive film. As another example of the present specification, the second power supply line (PL2) may be electrically connected to each of the second electrode layers (E2) of the multiple vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the second adhesive layer 214.

[0133] The second power supply line (PL2) according to the embodiment of the present specification may include a first lower power line 215a and a second lower power line 215b arranged along the second direction (Y). For example, the first lower power line 215a may be electrically connected to the second electrode layer (E2) of each of the first vibrating structure 210A and the third vibrating structure 210C (or the first group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D. The second lower power line 215b may be electrically connected to the second electrode layer (E2) of each of the second vibrating structure 210B and the fourth vibrating structure 210D (or the second group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0134] The pad unit 201 may be electrically connected to the first power supply line (PL1) and the second power supply line (PL2). For example, the pad unit 201 may be disposed on the vibration generator 210 so as to be electrically connected to one side (or one end) of each of the first power supply line (PL1) and the second power supply line (PL2). The pad unit 201 according to the embodiment of the present specification may include a first pad electrode and a second pad electrode. The first pad electrode may be electrically connected to one end of the first power supply line (PL1). The second pad electrode may be electrically connected to one end of the second power supply line (PL2).

[0135] The first pad electrode may be commonly connected to one end of the first upper power line 213a and the second upper power line 213b of the first power supply line (PL1). For example, one end of the first upper power line 213a and the second upper power line 213b may branch off from the first pad electrode.

[0136] The second pad electrode may be commonly connected to one end of each of the first lower power line 215a and the second lower power line 215b of the second power supply line (PL2). For example, one end of each of the first lower power line 215a and the second lower power line 215b may branch off from the second pad electrode.

[0137] The vibration device 200 or vibration generator 210 according to the embodiments of the present disclosure may further include a flexible cable 220 .

[0138] The flexible cable 220 is electrically connected to the pad section 201 disposed on the vibration device 200 or the vibration generator 210, and can supply a vibration drive signal (or an acoustic signal) provided from an acoustic processing circuit to the vibration device 200 or the vibration generator 210. The flexible cable 220 according to the embodiment of the present specification can include a first terminal and a second terminal. The first terminal of the flexible cable 220 can be electrically connected to a first pad electrode of the pad section 201. The second terminal of the flexible cable 220 can be electrically connected to a second pad electrode of the pad section 201. For example, the flexible cable 220 can be, but is not limited to, a flexible printed circuit cable or a flexible flat cable.

[0139] The acoustic processing circuit can generate an AC vibration drive signal including a first vibration drive signal and a second vibration drive signal based on an acoustic source. The first vibration drive signal can be either a positive polarity (+) vibration drive signal or a negative polarity (-) vibration drive signal, and the second vibration drive signal can be either a positive polarity (+) vibration drive signal or a negative polarity (-) vibration drive signal. For example, the first vibration drive signal can be supplied to the first electrode layer (E1) of each of the multiple vibrating structures 210A, 210B, 210C, and 210D via a first terminal of the flexible cable 220, a first pad electrode of the pad section 201, and a first power supply line (PL1). The second vibration drive signal can be supplied to the second electrode layer (E2) of each of the multiple vibrating structures 210A, 210B, 210C, and 210D via a second terminal of the flexible cable 220, a second pad electrode of the pad section 201, and a second power supply line (PL2).

[0140] The vibration generator 210 according to the embodiments of the present disclosure may further include a plate 216 .

[0141] The plate 216 may be disposed on the first protective member 213 or the second protective member 215. For example, the plate 216 may have the same shape as the first protective member 213 (or the second protective member 215). For example, the plate 216 may have a size that is the same as or larger than the first protective member 213 (or the second protective member 215).

[0142] The plate 216 according to the embodiments of the present specification may be disposed on the front surface (or first surface) of the first protective member 213. The plate 216 may be disposed on the front surface of the first protective member 213 of the vibration generator 210 via a connecting member (150) (FIG. 2). The plate 216 according to the embodiments of the present specification may be disposed between the display panel 100 and the vibration generator 210. For example, the plate 216 may be disposed on the rear surface of the display panel 100 via the connecting member 150.

[0143] According to another embodiment of the present specification, the plate 216 may be disposed on the rear surface (or second surface) of the second protective member 215. The plate 216 may be disposed on the rear surface of the second protective member 215 of the vibration generator 210 via the connecting member (150). According to another embodiment of the present specification, the plate 216 may be disposed between the vibration generator 210 and the support member 300.

[0144] The plate 216 according to the embodiment of the present specification may be made of one or more metal materials, for example, stainless steel, aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium lithium (Mg-Li) alloy, and aluminum (Al) alloy, but is not limited thereto. The plate 216 is disposed in the first protective member 213 (or the second protective member 215) to reinforce the mass of the vibration generator 210, and reduces the resonance frequency of the vibration generator 210 due to the increase in mass, thereby increasing the acoustic characteristics of the low frequency band and the sound pressure characteristics of the low frequency band of the sound generated in conjunction with the vibration of the vibration generator 210, and improving the flatness of the sound pressure characteristics. Here, the flatness of the acoustic characteristics may be the magnitude of deviation between the maximum sound pressure and the minimum sound pressure.

[0145] Therefore, the vibration device 200 according to the embodiment of the present specification includes a vibration generator 210 having a plurality of vibration structures 210A, 210B, 210C, and 210D arranged (or tiled) at regular intervals (D1, D2) so as to be realized as one single vibration body without being driven independently, and can be driven as a large-area vibration body by single-body vibration of the plurality of vibration structures 210A, 210B, 210C, and 210D. As a result, the vibration device 200 can vibrate the entire area of ​​the display panel 100, and therefore it is possible to increase or improve the acoustic characteristics and sound pressure characteristics in the reproduction band and low-frequency band of the sound generated by the vibration of the display panel 100.

[0146] Also, the vibration device 200 according to the embodiment of the present specification further includes the plate 216 disposed on the vibration generator 210, so that the resonance frequency of the vibration generator 210 can be reduced by the plate 216. As a result, the vibration device 200 according to the embodiment of the present specification can increase the acoustic characteristics of the low frequency band and the sound pressure characteristics of the low frequency band generated by the vibration of the display panel 100 linked to the vibration of the vibration generator 210, and improve the flatness of the sound pressure characteristics.

[0147] 6A to 6F are diagrams showing a vibration section according to an embodiment of the present specification.

[0148] 4, 5, and 6A, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D arranged (or tiled) in the vibration generator 210 according to the embodiment of the present specification can include a vibrating part 211. For example, the vibration device according to the embodiment of the present specification can include two or more vibrating structures. For example, each of the two or more vibrating structures can include a first part 211a and a second part 211b. For example, the first part 211a can include an inorganic material, and the second part 211b can include an organic material. For example, the first part 211a can have a piezoelectric characteristic, and the second part 211b can have a soft characteristic or flexibility. For example, the inorganic material of the first part 211a can have a piezoelectric characteristic, and the organic material of the second part 211b can have a soft characteristic or flexibility. The vibrating part 211 can include a plurality of first parts 211a and a plurality of second parts 211b. For example, the plurality of first portions 211a and the plurality of second portions 211b may be arranged alternately and repeatedly along the second direction (Y). Each of the plurality of first portions 211a may be arranged between the plurality of second portions 211b. Each of the plurality of first portions 211a may have a first width (W1) parallel to the second direction (Y) and a length parallel to the first direction (X). Each of the plurality of second portions 211b may be arranged side by side with each other in the first direction (X). For example, each of the plurality of second portions 211b may have a second width (W2) and a length parallel to the first direction (X). Each of the plurality of second portions 211b may have the same size, for example, width, area, or volume. For example, each of the plurality of second portions 211b may have the same size, for example, width, area, or volume, within the range of a process error (or tolerance) occurring in a manufacturing process. The first width (W1) may be the same as or different from the second width (W2). For example, the first width (W1) may be greater than the second width (W2). For example, the first portion 211a and the second portion 211b may include a line shape or a stripe shape having the same or different sizes.6A has a 2-2 composite structure, the resonant frequency of which is 20 kHz or less. Without being limited thereto, the resonant frequency of the resonant frequency of the resonant frequency of the vibrating portion 211 can be changed by at least one of the shape, length, thickness, etc. of the vibrating portion 211.

[0149] 4, 5, and 6B, each of the vibration parts 211 of the vibration structures 210A, 210B, 210C, and 210D arranged in the vibration generator 210 according to another embodiment of the present specification may include a plurality of first parts 211a and a plurality of second parts 211b arranged alternately and repeatedly along the first direction (X). Each of the plurality of first parts 211a may be arranged between the plurality of second parts 211b. For example, each of the plurality of first parts 211a may have a third width (W3) parallel to the first direction (X) and a length parallel to the second direction (Y). Each of the plurality of second parts 211b may have a fourth width (W4) parallel to the first direction (X) and a length parallel to the second direction (Y). The third width (W3) may be the same as or different from the fourth width (W4). For example, the third width (W3) may be greater than the fourth width (W4). For example, the first portion 211a and the second portion 211b may include a line shape or a stripe shape having the same or different sizes. The vibrating portion 211 shown in FIG. 6B may have a resonance frequency of 20 kHz or less by having a 2-2 composite structure. Without being limited thereto, the resonance frequency of the vibrating portion 211 may be changed by at least one of the shape, length, and thickness of the vibrating portion 211.

[0150] In the vibrating part 211 shown in FIGS. 6A and 6B, the plurality of first parts 211a and the plurality of second parts 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Each of the plurality of second parts 211b may be configured to fill a gap between two adjacent first parts 211a. Each of the plurality of second parts 211b may be connected or bonded to the adjacent first part 211a. Thus, the vibrating part 211 may be expanded to a desired size or length by side-coupling (or coupling) the first parts 211a and the second parts 211b.

[0151] In the vibrating part (or vibrating layer) 211 shown in Figures 6A and 6B, the widths (W2, W4) of each of the multiple second portions 211b may gradually decrease from the middle portion of the vibrating part 211 or vibrating device toward both edge portions (or both sides, or both ends).

[0152] According to an embodiment of the present specification, the second portion 211b having the largest width (W2, W4) among the plurality of second portions 211b may be located at a portion where the largest stress is concentrated when the vibrating portion 211 or the vibrating device vibrates in the vertical direction (Z) (or thickness direction). The second portion 211b having the smallest width (W2, W4) among the plurality of second portions 211b may be located at a portion where the smallest stress is generated relatively when the vibrating portion 211 or the vibrating device vibrates in the vertical direction (Z). For example, the second portion 211b having the largest width (W2, W4) among the plurality of second portions 211b may be located at a central portion of the vibrating portion 211, and the second portion 211b having the smallest width (W2, W4) among the plurality of second portions 211b may be located at both edge portions of the vibrating portion 211. As a result, when the vibrating part 211 or the vibrating device vibrates in the vertical direction (Z), the interference of sound waves generated in the part where the greatest stress is concentrated or the overlap of resonance frequencies can be minimized, and thus the dipping phenomenon of sound pressure generated in the low frequency range can be improved, and the flatness of acoustic characteristics in the low frequency range can be improved. For example, the flatness of acoustic characteristics can be the magnitude of deviation between the maximum sound pressure and the minimum sound pressure.

[0153] 6A and 6B, the first portions 211a may have different sizes (or widths). For example, the size (or width) of the first portions 211a may gradually decrease or increase from the middle of the vibrating portion 211 or the vibrating device toward both edges (or both sides, or both ends). In this case, the vibrating portion 211 may have various natural vibration frequencies due to the vibration of each of the first portions 211a having different sizes, thereby improving the sound pressure characteristics of the sound and expanding the reproduction band of the sound.

[0154] 4, 5, and 6C, each of the vibration parts 211 of the vibration structures 210A, 210B, 210C, and 210D arranged in the vibration generator 210 according to another embodiment of the present specification may include a plurality of first parts 211a spaced apart from each other along the first direction (X) and the second direction (Y), and a second part 211b arranged between the plurality of first parts 211a. Each of the plurality of first parts 211a may be arranged to be spaced apart from each other along each of the first direction (X) and the second direction (Y). For example, each of the plurality of first parts 211a may have a hexahedral shape having the same size as each other and be arranged in a lattice shape. The second part 211b may be arranged between the plurality of first parts 211a along each of the first direction (X) and the second direction (Y). The second portion 211b may be configured to fill a gap between two adjacent first portions 211a or surround each of the first portions 211a. Thus, the second portion 211b may be connected to or bonded to the adjacent first portions 211a. For example, the width of the second portion 211b disposed between two adjacent first portions 211a along the first direction (X) may be the same as or different from the width of the first portion 211a, and the width of the second portion 211b disposed between two adjacent first portions 211a along the second direction (Y) may be the same as or different from the width of the first portion 211a. Therefore, the vibration portion 211 shown in FIG. 6C may have a resonant frequency of 30 MHz or less by having a 1-3 composite structure. Without being limited thereto, the resonant frequency of the vibration portion 211 may be changed by at least one of the shape, length, and thickness of the vibration portion 211.

[0155] 4, 5, and 6D, each of the vibration parts 211 of the vibration structures 210A, 210B, 210C, and 210D arranged in the vibration generator 210 according to another embodiment of the present specification may include a plurality of first parts 211a spaced apart from each other along a first direction (X) and a second direction (Y), and a second part 211b surrounding each of the first parts 211a. Each of the first parts 211a may have a circular planar structure. For example, each of the first parts 211a may have a circular shape, but is not limited thereto, and may have a dot shape including an elliptical shape, a polygonal shape, or a donut shape. The second part 211b may be configured to surround each of the first parts 211a. Thus, the second part 211b may be connected to or bonded to a side surface of each of the first parts 211a. Each of the plurality of first parts 211a and second parts 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Therefore, the vibration part 211 shown in FIG. 6D may be realized as a circular vibration source (or vibrating body) while having a 1-3 composite structure, and thus the vibration characteristics or sound output characteristics may be improved and the vibration part 211 may have a resonance frequency of 30 MHz or less. Without being limited thereto, the resonance frequency of the vibration part 211 may be changed by at least one or more of the shape, length, and thickness of the vibration part 211.

[0156] 4, 5, and 6E, each vibration part 211 of a plurality of vibration structures 210A, 210B, 210C, and 210D arranged in a vibration generator 210 according to another embodiment of the present specification may include a plurality of first portions 211a spaced apart from each other along a first direction (X) and a second direction (Y), and a second portion 211b surrounding each of the plurality of first portions 211a. Each of the plurality of first portions 211a may have a triangular planar structure. For example, each of the plurality of first portions 211a may have a triangular plate shape.

[0157] According to an embodiment of the present specification, among the plurality of first parts 211a, four adjacent first parts 211a may be adjacently arranged to form a quadrangular shape (or a square shape). The vertices of each of the four adjacent first parts 211a forming a quadrangular shape may be adjacently arranged to the center (or the exact center) of the quadrangular shape. The second part 211b may be configured to surround each of the plurality of first parts 211a. Thus, the second part 211b may be connected or bonded to the side of each of the plurality of first parts 211a. Each of the plurality of first parts 211a and the second part 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Therefore, the vibration part 211 shown in FIG. 6E may have a resonance frequency of 30 MHz or less due to the 1-3 composite structure. Without being limited thereto, the resonance frequency of the vibration part 211 may be changed by at least one or more of the shape, length, and thickness of the vibration part 211.

[0158] According to another embodiment of the present specification, as shown in FIG. 6F, among the plurality of first parts 211a, six adjacent first parts 211a may be adjacently arranged to form a hexagonal shape (or a regular hexagonal shape). The vertices of each of the six adjacent first parts 211a forming the hexagonal shape may be adjacently arranged to the center (or the exact center) of the hexagonal shape. The second part 211b may be configured to surround each of the plurality of first parts 211a. Thus, the second part 211b may be connected or bonded to the side of each of the plurality of first parts 211a. Each of the plurality of first parts 211a and the second part 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Therefore, the vibration part 211 shown in FIG. 6F may be realized as a vibration source (or vibrating body) having a 1-3 composite structure and thus may have improved vibration characteristics or sound output characteristics and a resonance frequency of 30 MHz or less. Without being limited thereto, the resonance frequency of the vibrating portion 211 can be changed by at least one of the shape, length, thickness, and the like of the vibrating portion 211.

[0159] Referring to Figures 6E and 6F, among the multiple first portions 211a having a triangular shape, 2N (N is a natural number greater than or equal to 2) adjacent first portions 211a may be arranged adjacent to each other to form a 2N-sided polygon.

[0160] In FIG. 6A to FIG. 6F, each of the plurality of first portions 211a according to the embodiment of the present specification may be composed of an inorganic material part. The inorganic material part may include a piezoelectric material or an electroactive material. The piezoelectric material or the electroactive material has a characteristic that a potential difference is generated by dielectric polarization due to a change in the relative positions of positive (+) ions and negative (-) ions when a pressure or twist phenomenon acts on a crystal structure due to an external force, and vibration is generated by an electric field due to an oppositely applied voltage. As described in FIG. 5, a first surface of each of the plurality of first portions 211a may be electrically connected to a first electrode layer (E1), and a second surface of each of the plurality of first portions 211a may be electrically connected to a second electrode layer (E2).

[0161] In FIG. 6A to FIG. 6F, the inorganic material portion formed in each of the first portions 211a may be formed of a ceramic-based material capable of realizing a relatively high vibration, or may be formed of a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may be a plate-like structure having piezoelectric and inverse piezoelectric effects and having orientation. The perovskite crystal structure may be represented by a chemical formula of ABO3, in which the A site is made of a divalent metal element and the B site is made of a tetravalent metal element. For example, in the chemical formula of ABO3, the A site and the B site may be cations, and O may be an anion. For example, the first portion 211a may include at least one of PbTiO3, PbZrO3, PbZrTiO3, BaTiO3, and SrTiO3, but is not limited thereto.

[0162] The perovskite crystal structure can generate a piezoelectric effect by changing the polarization as the position of the central ion, for example, titanium (Ti) ion in the case of PbTiO3, fluctuates due to external stress or magnetic field. For example, the perovskite crystal structure can generate a piezoelectric effect by changing from a cubic shape, which is a symmetric structure, to an unsymmetric structure such as a tetragonal, orthorhombic, or rhombohedral shape due to external stress or magnetic field. Since the polarization is high at the morphotropic phase boundary of the tetragonal and rhombohedral structures, which have an asymmetric structure, and the polarization can be easily rearranged, the perovskite crystal structure can have high piezoelectric properties.

[0163] According to an embodiment of the present specification, the inorganic material portion configured in each of the plurality of first portions 211a may include, but is not limited to, one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), and niobium (Nb).

[0164] According to another embodiment of the present specification, the inorganic material portion formed in each of the first portions 211a may include, but is not limited to, a PZT (lead zirconate titanate)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nickel niobate)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), or may include, but is not limited to, at least one of CaTiO3, BaTiO3, and SrTiO3 that does not include lead (Pb).

[0165] According to another embodiment of the present specification, the inorganic material portion formed in each of the first portions 211a has a piezoelectric deformation coefficient (d33 ) and has a piezoelectric deformation coefficient of 1,000 pC / N or more. In order for the vibration device to be applicable to a large display panel (or vibration member) and to have sufficient vibration or piezoelectric properties, the piezoelectric device must have a high piezoelectric deformation coefficient (d 33 For example, it is necessary to have a high piezoelectric deformation coefficient (d 33 ), the inorganic material portion may include a PZT-based material (PbZrTiO3) as a main component, a softener dopant material doped in the A site (Pb), and a relaxor ferroelectric material doped in the B site (ZrTi).

[0166] The softener dopant material can improve the piezoelectric and dielectric properties of the inorganic material portion, for example, the piezoelectric deformation coefficient (d 33 ) can be increased. The softer dopant material according to the embodiments of the present specification can include a +2 to +3 valent element. Since a morphotropic phase boundary (MPB) can be formed by including a softer dopant material in a PZT-based material (PbZrTiO3), the piezoelectric and dielectric properties can be improved. For example, the softer dopant material can include strontium (Sr), barium (Ba), lanthanum (La), neodymium (Nd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For example, ions (Sr) of the softer dopant material doped in a PZT-based material (PbZrTiO3) can be increased by 100%. 2+ , B.A. 2+ , La 2+ , Nd 3+ , Ca 2+ , Y 3+ , Er 3+ , Yb 3+ ) replaces a portion of lead (Pb) in the PZT-based material (PbZrTiO3), and the amount of substitution can be 2 to 20 mol%. For example, if the amount of substitution is less than 2 mol% or exceeds 20 mol%, the perovskite crystal structure collapses, and the electric coupling coefficient (kP) and the piezoelectric deformation coefficient (d 33When a softener dopant material is substituted, a morphotropic phase boundary can be formed, and high piezoelectric and dielectric properties can be obtained at the morphotropic phase boundary, so that a vibration device having high piezoelectric and dielectric properties can be realized.

[0167] According to an embodiment of the present specification, the relaxor ferroelectric material doped in the PZT-based material (PbZrTiO3) can improve the electrical deformation characteristics of the inorganic material part. The relaxor ferroelectric material according to the embodiment of the present specification can include, but is not limited to, a PMN (lead magnesium niobate)-based material or a PNN (lead nickel niobate)-based material. The PMN-based material can include lead (Pb), magnesium (Mg), and niobium (Nb), and can be, for example, Pb(Mg,Nb)O3. The PNN-based material can include lead (Pb), nickel (Ni), and niobium (Nb), and can be, for example, Pb(Ni,Nb)O3. For example, the relaxor ferroelectric material doped in the PZT-based material (PbZrTiO3) replaces a portion of each of the zirconium (Zr) and titanium (Ti) in the PZT-based material (PbZrTiO3), and the amount of the replacement can be 5 to 25 mol%. For example, if the amount of replacement is less than 5 mol% or more than 25 mol%, the perovskite crystal structure is destroyed, and the electric coupling coefficient (kP) and the piezoelectric deformation coefficient (d 33 ) may decrease.

[0168] According to an embodiment of the present specification, the inorganic material portion formed in each of the plurality of first portions 211a may further include a donor material doped in the B site (ZrTi) of the PZT-based material (PbZrTiO3) for additional improvement of the piezoelectric coefficient. For example, the donor material doped in the B site (ZrTi) may include an element with a valence of +4 to +6. For example, the donor material doped in the B site (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0169] The inorganic material portion of the first portion 211a according to the embodiment of the present specification has a piezoelectric deformation coefficient (d 33 ) can have a C / N or more, it is possible to realize a vibration device with improved vibration characteristics. For example, a vibration device with improved vibration characteristics can be realized in a large-area device (or vibration member).

[0170] 6A to 6F, the second portion 211b may be disposed between the first portions 211a or may be disposed to surround each of the first portions 211a. As a result, the vibration portion 211 of the vibration generator 210 or the vibration device 200 may increase vibration energy due to the link in the unit lattice of the first portion 211a by the second portion 211b, so that the vibration characteristics may be increased and the piezoelectric characteristics and flexibility may be ensured. For example, the second portion 211b may be any one of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but is not limited thereto.

[0171] The second portion 211b according to the embodiment of the present specification may be composed of an organic material portion. For example, the organic material portion may be disposed between the inorganic material portions to absorb impacts applied to the inorganic material portion (or the first portion) and release stress concentrated on the inorganic material portion to improve durability of the vibration portion 211 of the vibration generator 210 or the vibration device, and may provide flexibility to the vibration portion 211 of the vibration generator 210 or the vibration device.

[0172] The second portion 211b according to the embodiment of the present specification may have a lower modulus (or Young's modulus) and viscoelasticity than the first portion 211a. This may improve the reliability of the first portion 211a, which is vulnerable to impact due to the brittle characteristics of the first portion 211a. For example, the second portion 211b may be made of a material having a loss factor of 0.01 to 1 and a modulus of 0.1 to 10 [Gpa].

[0173] The organic material portion of the second portion 211b may include an organic material, an organic polymer, an organic piezoelectric material, or an organic non-piezoelectric material having a flexible characteristic, compared to the inorganic material portion of the first portion 211a. For example, the second portion 211b may be expressed as an adhesive portion, an expandable portion, a bending portion, a damping portion, or a soft portion having a flexible characteristic, but is not limited thereto. Therefore, the vibration portion 211 of the vibration generator 210 according to various embodiments of the present specification may have a shape of a single thin film by arranging (or connecting) a plurality of the first portions 211a and the second portions 211b on the same plane. For example, the vibration portion 211 may vibrate in the vertical direction by the first portion 211a having a vibration characteristic, and may bend into a curved shape by the second portion 211b having flexibility or softness. In addition, in the vibration portion 211 of the vibration generator 210 according to various embodiments of the present specification, the size of the first portion 211a and the size of the second portion 211b may be set according to the piezoelectric characteristic and flexibility required for the vibration portion 211. For example, in the case of vibration part 211 where piezoelectric characteristics are more important than flexibility, first part 211a may be configured to be larger than second part 211b. As another embodiment of this specification, in the case of vibration part 211 where flexibility is more important than piezoelectric characteristics, second part 211b may be configured to be larger than first part 211a. Therefore, since the size of vibration part 211 can be adjusted according to the required characteristics, there is an advantage that vibration part 211 can be easily designed.

[0174] One or more of the vibration parts 211 shown in Figures 6A to 6F may be at least one or more of the vibration parts 211 of the multiple vibration structures 210A, 210B, 210C, and 210D shown in Figure 4. For example, each of the multiple vibration structures 210A, 210B, 210C, and 210D may be realized by one or more of the vibration parts 211 described in Figures 6A to 6F depending on the characteristics required for the sound generated in conjunction with the vibration of the vibration device 200.

[0175] According to an embodiment of the present specification, each of the multiple vibrating structures 210A, 210B, 210C, and 210D may include one or more of the vibrating parts 211 described in Figures 6A to 6F, or may each include a different vibrating part 211.

[0176] According to an embodiment of the present specification, some of the vibrating structures 210A, 210B, 210C, and 210D and each of the remaining vibrating structures may include different vibrating parts 211 from each other among the vibrating parts 211 described in Figures 6A to 6F. For example, in the first to fourth vibrating structures 210A, 210B, 210C, and 210D shown in Figure 4, each of the first and second vibrating structures 210A and 210B may include one or more vibrating parts 211 from the vibrating parts 211 described in Figures 6A to 6F, and each of the third and fourth vibrating structures 210C and 210D may include a vibrating part 211 different from the vibrating part 211 of the first and second vibrating structures 210A and 210B among the vibrating parts 211 described in Figure 6B. For example, in the first to fourth vibrating structures 210A, 210B, 210C, and 210D shown in Figure 4, the first and fourth vibrating structures 210A and 210D arranged in the first diagonal direction may include one or more vibrating parts 211 of the vibrating parts 211 described in Figures 6A to 6F, and the second and third vibrating structures 210B and 210C arranged in the second diagonal direction may include vibrating parts 211 different from the first and fourth vibrating structures 210A and 210D arranged in the first diagonal direction of the vibrating parts 211 described in Figures 6A to 6F.

[0177] 7 is a diagram showing an apparatus according to another embodiment of the present specification, and is another cross-sectional view taken along line II' shown in FIG.

[0178] A vibration device including one vibration generator has a problem that it cannot output sufficient sound. For example, when a vibration device including one vibration generator is configured in a display device such as a TV, it is difficult to ensure sufficient sound. Therefore, when a vibration device realized with two vibration generators is applied to a device, the attachment area of ​​the display panel 100 or the vibration member and the vibration device can be widened. When the attachment area is widened, it is difficult to attach the vibration device to the back surface of the display panel 100 or the vibration member without air bubbles. For example, when the display panel 100 is a light-emitting display panel, it is difficult to attach the vibration device 200 to the sealing substrate without air bubbles. In addition, a vibration device realized by attaching two vibration generators arranged side by side has a problem of split vibration in which the vibrations between the adjacent vibration generators are different from each other and different vibrations are generated. This causes a problem of lowering the flatness of the acoustic characteristics. There is a problem that the split vibration increases as the attachment area of ​​the vibration device becomes larger.

[0179] The vibration device 200 according to the embodiment of the present specification may include a plurality of vibration generators 210, 230 stacked on top of each other. The vibration device 200 may include a plurality of vibration generators 210, 230 stacked on top of each other so as to be displaced (or vibrated) in the same direction. For example, the vibration device 200 may include a plurality of vibration generators 210, 230 stacked on top of each other so as to have the same driving direction.

[0180] The vibration generators 210, 230 may be overlapped and stacked on each other so as to be displaced (or driven or vibrated) in the same direction. For example, the vibration generators 210, 230 may contract or expand in the same driving direction (or displacement direction) by a vibration drive signal while overlapped and stacked on each other, thereby increasing or maximizing the displacement amount (or bending force) or amplitude displacement. As a result, the vibration generators 210, 230 can increase (or maximize) the displacement amount (or bending force) or amplitude displacement of the display panel 100, thereby improving the acoustic characteristics and / or sound pressure characteristics including the mid-low frequency band generated by the vibration of the display panel 100 or the vibrating member. For example, the vibration generators 210, 230 may be realized so as to be overlapped and stacked on each other so as to have the same driving direction, thereby increasing or maximizing the driving force of the vibration generators 210, 230. This can improve the acoustic characteristics and / or sound pressure characteristics of the mid-low frequency band generated in the display panel 100 or the vibrating member by the vibration of the multiple vibration generators 210, 230. For example, the mid-low frequency band may be 200 Hz to 1 kHz, but is not limited thereto.

[0181] Each of the vibration generators 210, 230 may include a vibration structure (or a piezoelectric structure, or a vibration unit, or a piezoelectric vibration unit) including a piezoelectric ceramic having piezoelectric properties, but is not limited thereto. For example, each of the vibration generators 210, 230 according to the embodiment of the present specification may vibrate (or undergo mechanical displacement) in response to an electrical signal applied from the outside by including a piezoelectric ceramic having a perovskite crystal structure. For example, when a vibration drive signal (or a voice signal) is applied to each of the vibration generators 210, 230, the vibration generators 210, 230 are displaced (or vibrate) in the same direction due to a bending phenomenon in which the bending direction alternates by alternately repeating contraction and expansion due to the inverse piezoelectric effect of the vibration structure (or the piezoelectric structure, or the vibration unit, or the piezoelectric vibration unit), thereby increasing or maximizing the displacement amount (or bending force) or amplitude displacement of the vibration device 200 and / or the display panel 100 (or the vibration member).

[0182] Among the multiple vibration generators 210, 230, the first vibration generator 210 arranged on the display panel 100 may be one main vibration generator. For example, among the multiple vibration generators 210, 230, the remaining second vibration generator 230 may be at least one auxiliary vibration generator stacked on the first vibration generator 210. The second vibration generator 230 may have the same structure as the first vibration generator 210, but is not limited thereto.

[0183] The vibration device 200 according to the embodiment of the present specification may further include a connecting member 250 (or a third connecting member) disposed between the plurality of vibration generators 210, 230.

[0184] The connecting member 250 according to the embodiment of the present specification may be disposed between the plurality of vibration generators 210, 230. For example, the connecting member 250 may be made of a material including an adhesive layer having excellent adhesion or bonding strength to each of the plurality of vibration generators 210, 230. For example, the connecting member 250 may include, but is not limited to, a foam pad, a double-sided tape, or an adhesive. For example, the adhesive layer of the connecting member 250 may include, but is not limited to, epoxy, acrylic, silicone, or urethane. For example, the adhesive layer of the connecting member 250 may include a urethane-based material (or material) that is relatively softer than acrylic among acrylic and urethane. As a result, vibration loss in the vibration device 200 due to interference of displacement between the plurality of vibration generators 210, 230 may be minimized, or each of the plurality of vibration generators 210, 230 may be freely displaced.

[0185] Multiple vibration generators 210, 230 according to the embodiments of the present disclosure may be integrated into one structure (or part) by a lamination process using a connecting member 250.

[0186] The device according to the embodiment of the present specification may further include a connecting member 150 (or a first connecting member) disposed between the display panel 100 and the vibration device 200.

[0187] The connecting member 150 is disposed between the display panel 100 and the vibration device 200, thereby allowing the vibration device 200 to be connected or coupled to the rear surface of the display panel 100. For example, the vibration device 200 may be supported or disposed on the rear surface of the display panel 100 by being connected or coupled to the rear surface of the display panel 100 via the connecting member 150.

[0188] The connecting member 150 according to the embodiment of the present specification may be made of a material including an adhesive layer having excellent adhesion or bonding strength to each of the rear surface of the display panel 100 and the vibrating device 200. For example, the connecting member 150 may include, but is not limited to, a foam pad, a double-sided tape, or an adhesive. For example, the adhesive layer of the connecting member 150 may include, but is not limited to, epoxy, acrylic, silicone, or urethane. For example, the adhesive layer of the connecting member 150 may be different from or different from the adhesive layer of the connecting member 250. For example, the adhesive layer of the connecting member 150 may include an acrylic-based material (or material) having relatively excellent adhesion and high hardness among acrylic and urethane so that the vibration of the vibrating device 200 can be well transmitted to the display panel 100. As a result, the vibration of the vibrating device 200 can be well transmitted to the display panel 100.

[0189] The adhesive layer of the connecting member 150 may further include additives such as a tackifier, a wax component, or an antioxidant. The additives may prevent the connecting member 250 from being separated (or peeled off) from the display panel 100 due to vibration of the vibration device 200. For example, the tackifier may be a rosin derivative, the wax component may be paraffin wax, and the antioxidant may be a phenol-based antioxidant such as thioester, but are not limited thereto.

[0190] The connecting member 150 according to another embodiment of the present specification may further include a hollow portion provided between the display panel 100 and the vibration device 200. The hollow portion of the connecting member 150 may provide an air gap between the display panel 100 and the vibration device 200. The air gap allows sound waves (or sound pressure) caused by vibration of the vibration device 200 to be concentrated on the display panel 100 without being dispersed by the connecting member 150, thereby minimizing loss of vibration caused by the connecting member 150, and thus increasing the acoustic characteristics and / or sound pressure characteristics of the sound generated by the vibration of the display panel 100.

[0191] The display device according to the embodiment of the present specification may further include a support member 300 and a middle frame 400 disposed on the rear surface of the display panel 100. The description of the support member 300 and the middle frame 400 is the same as or similar to that described with reference to FIGS. 1 and 2, and therefore will not be repeated.

[0192] The display device according to the embodiment of the present specification may further include a plurality of holes 301. The description of the plurality of holes 301 is the same as or similar to the description of FIGS. 1 and 2, so a duplicated description thereof will be omitted.

[0193] Fig. 8 is a diagram showing a vibration device according to another embodiment of the present specification, and Fig. 9 is a cross-sectional view taken along line III-III' shown in Fig. 8.

[0194] 8 and 9, a vibration device 200 according to another embodiment of the present disclosure may include multiple vibration generators 210, 230 and a connecting member 250. For example, the vibration device 200 may include two or more vibration generators.

[0195] The vibration generators 210, 230 may be stacked on top of each other so as to be displaced (or driven or vibrated) in the same direction to maximize the amplitude displacement of the vibration device 200 and / or the display panel 100. For example, the vibration generators 210, 230 may have substantially the same size as each other, but are not limited thereto. For example, the vibration generators 210, 230 may have substantially the same size as each other within the range of error in the manufacturing process, but are not limited thereto. In this way, the vibration generators 210, 230 may maximize the amplitude displacement of the vibration device 200 and / or the display panel 100. One side (or tip, or outer surface, or each corner) 210a, 230a of each of the vibration generators 210, 230 may be aligned with or located on a virtual extension line (VL) extended along the thickness direction (Z) of the display panel 100.

[0196] According to the embodiment of the present specification, when the displacement direction and the amplitude displacement of each of the multiple vibration generators 210, 230 do not match each other, the amplitude displacement of the vibration device 200 cannot be maximized. For example, when at least one of the multiple vibration generators 210, 230 has a different size beyond the error range in the manufacturing process, the displacement direction and the amplitude displacement of each of the multiple vibration generators 210, 230 do not match each other, and the amplitude displacement of the vibration device 200 cannot be maximized. Also, when at least one of the multiple vibration generators 210, 230 displaces in a different direction, the displacement direction of each of the multiple vibration generators 210, 230 do not match each other, and the amplitude displacement of the vibration device 200 cannot be maximized.

[0197] The vibration device 200 according to the embodiment of the present specification may include two or more vibration generators 210, 230 stacked to displace in the same direction. In the following description, it is assumed that the vibration device 200 includes first and second vibration generators 210, 230.

[0198] According to an embodiment of the present specification, the first vibration generator 210 may be connected or disposed on the rear surface of the display panel 100 via a connecting member 150 (or a first connecting member). The second vibration generator 230 may be disposed or adhered to the first vibration generator 210 via a connecting member 250 (or a third connecting member).

[0199] Each of the first and second vibration generators 210 , 230 according to the embodiments of the present specification may include a vibration part 221 , a first protective member 213 , and a second protective member 215 .

[0200] The vibrating part 211 may include a piezoelectric material (or a piezoelectric element) having piezoelectric properties (or piezoelectric effect). For example, the piezoelectric material may have a property that a potential difference is generated by dielectric polarization due to a change in the relative positions of positive ions and negative (-) ions when pressure or twisting is applied to the crystal structure due to an external force, and vibration is generated by an electric field due to an applied voltage.

[0201] The vibration part 221 according to an embodiment of the present specification may include a vibration layer 221a containing a piezoelectric material, a first electrode layer 221b arranged on a first surface of the vibration layer 221a, and a second electrode layer 221c arranged on a second surface opposite to the first surface of the vibration layer 221a.

[0202] The vibration layer 221a may include a piezoelectric material. The vibration layer 221a may be expressed by terms such as, but not limited to, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibration portion, a piezoelectric vibration layer, an electroactive portion, an inorganic material layer, or an inorganic material portion.

[0203] The vibration layer 221a may be made of a transparent, semi-transparent, or opaque piezoelectric material, and may be transparent, semi-transparent, or opaque. The vibration layer 221a is substantially the same as the vibration part 211 described in FIG. 6A to FIG. 6F, and therefore a duplicate description thereof will be omitted.

[0204] The vibration layer 221a according to the embodiment of the present specification may be configured in a circular, elliptical, or polygonal shape, but is not limited thereto.

[0205] The first electrode layer 221b may be disposed on a first surface (or upper surface) of the vibration layer 221a. The second electrode layer 221c may be disposed on a second surface (or rear surface) opposite to the first surface of the vibration layer 221a. The first electrode layer 221b and the second electrode layer 221c are substantially the same as the first electrode layer (E1) and the second electrode layer (E2) described in FIG. 4 and FIG. 5, so that the description thereof will be omitted or simplified.

[0206] According to an embodiment of the present specification, the first electrode layer 221b may have the same shape as the vibration layer 221a, but is not limited thereto. For example, the second electrode layer 211c may have the same shape as the vibration layer 221a, but is not limited thereto.

[0207] In each of the first and second vibration generators 210, 230, the first electrode layer 221b may be disposed closer to the display panel 100 than the second electrode layer 221c, but is not limited thereto. For example, in a vibration device 200 including a plurality of vibration generators 210, 230 according to an embodiment of the present specification, the first electrode layer 221b of each of the plurality of vibration generators 210, 230 may be disposed closer to the display panel 100 than the second electrode layer 221c.

[0208] The vibration layer 221a may be polarized (or subjected to poling treatment) by a constant voltage applied to the first electrode layer 221b and the second electrode layer 221c in a constant temperature atmosphere or a temperature atmosphere that changes from high temperature to room temperature, but is not limited thereto. For example, the vibration layer 221a may be displaced or vibrated by alternately repeating contraction and expansion due to the inverse piezoelectric effect caused by a vibration drive signal (or an acoustic signal, or a voice signal) applied from the outside to the first electrode layer 221b and the second electrode layer 221c.

[0209] The vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may have the same size as the vibration part 221 (or vibration layer 221a) of the second vibration generator 230. In order to maximize or increase the displacement amount or amplitude displacement of the vibration device 200, the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially overlapped or stacked with the vibration part 221 (or vibration layer 221a) of the second vibration generator 230 without any misalignment. For example, the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially overlapped or stacked with the vibration part 221 (or vibration layer 221a) of the second vibration generator 230 within the range of error in the manufacturing process without any misalignment. For example, the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 and the vibration part 221 (or vibration layer 221a) of the second vibration generator 230 are realized in a laminated structure in which they are overlapped (or stacked) without any misalignment while having the same size, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device 200. For example, the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 and the vibration part 221 (or vibration layer 221a) of the second vibration generator 230 are realized in a laminated structure in which they are accurately overlapped (or stacked) without any misalignment while having the same size, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device 200.

[0210] According to an embodiment of the present specification, the first portion (or tip, outer surface, or each corner portion) 210a of each of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be aligned with or located on the virtual extension line (VL). For example, the first portion (or tip, outer surface, or each corner portion) 210a of each of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be precisely aligned with or located on the virtual extension line (VL). The second portion (or tip, outer surface, or each corner portion) 230a of each of the vibration part 221 (or vibration layer 221a) of the second vibration generator 230 may be aligned with or located on the virtual extension line (VL). For example, the second portion (or tip, or outer surface, or each corner portion) 230a of each of the vibration parts 221 (or vibration layer 221a) of the second vibration generator 230 may be accurately aligned with or accurately located on the virtual extension line (VL). The first portion 210a of each of the vibration parts 221 (or vibration layer 221a) of the first vibration generator 210 may be aligned with or overlap with the second portion 230a of each of the vibration parts 221 (or vibration layer 221a) of the second vibration generator 230. For example, the first portion 210a of each of the vibration parts 221 (or vibration layer 221a) of the first vibration generator 210 may be accurately aligned with or overlap with the second portion 230a of each of the vibration parts 221 (or vibration layer 221a) of the second vibration generator 230. For example, the first portion 210a of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may correspond to the second portion 230a of the vibration part 221 (or vibration layer 221a) of the second vibration generator 230. Therefore, in the vibration device 200 according to the embodiment of the present specification, the vibration part 221 (or the first vibration part) of the first vibration generator 210 and the vibration part 221 (or the second vibration part) of the second vibration generator 230 are displaced in the same direction, so that the displacement amount or the amplitude displacement can be maximized or increased. This makes it possible to increase (or maximize) the displacement amount (or bending force) or the amplitude displacement of the display panel 100.

[0211] In the first vibration generator 210, the first protective member 213 may be disposed on the first electrode layer 221b. The first protective member 213 may protect the first electrode layer 221b. The second protective member 215 may be disposed on the second electrode layer 221c. The second protective member 215 may protect the second electrode layer 221c. For example, each of the first protective member 213 and the second protective member 215 of the first vibration generator 210 may be made of, but is not limited to, a plastic material, a fiber material, or a wood material. For example, in the first vibration generator 210, the first protective member 213 may be made of the same material as the second protective member 215 or another material. One or more of the first protective member 213 and the second protective member 215 of the first vibration generator 210 may be connected or coupled to the rear surface of the display panel 100 via the connecting member 150 (or the first connecting member). For example, the first protective member 213 of the first vibration generator 210 may be connected or coupled to the rear surface of the display panel 100 via the connecting member 150 (or the first connecting member).

[0212] In the second vibration generator 230, the first protective member 213 may be disposed on the first electrode layer 221b. The first protective member 213 may protect the first electrode layer 221b. The second protective member 215 may be disposed on the second electrode layer 221c. The second protective member 215 may protect the second electrode layer 221c. For example, each of the first protective member 213 and the second protective member 215 of the second vibration generator 230 may be made of, but is not limited to, a plastic material, a fiber material, or a wood material. For example, in the second vibration generator 230, the first protective member 213 may be made of the same material as the second protective member 215 or another material. One or more of the first protective member 213 and the second protective member 215 of the second vibration generator 230 may be connected or coupled to the back surface of the first vibration generator 210 via a connecting member 250 (or a third connecting member). For example, the first protective member 213 of the second vibration generator 230 may be connected or coupled to the second protective member 215 of the first vibration generator 210 via a connecting member 250 .

[0213] In each of the first and second vibration generators 210 and 230, the first and second protective members 213 and 215 may be made of a plastic material. For example, the first and second protective members 213 and 215 may be, but are not limited to, a polyimide film or a polyethylene terephthalate film.

[0214] One or more of the first and second vibration generators 210, 230 according to embodiments of the present disclosure may further include a first adhesive layer 212 and a second adhesive layer 214.

[0215] In the first vibration generator 210, the first adhesive layer 212 may be disposed between the vibration part 221 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode layer 221b of the vibration part 221 and the first protective member 213. The first protective member 213 may be disposed on the first surface (or the first electrode layer 221b) of the vibration part 221 via the first adhesive layer 212. For example, the first protective member 213 may be bonded or connected to the first surface (or the first electrode layer 221b) of the vibration part 221 by a film lamination process using the first adhesive layer 212 as an intermediary.

[0216] In the first vibration generator 210, the second adhesive layer 214 may be disposed between the vibration part 221 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode layer 221c of the vibration part 221 and the second protective member 215. The second protective member 215 may be disposed on the second surface (or the second electrode layer 221c) of the vibration part 221 via the second adhesive layer 214. For example, the second protective member 215 may be bonded or connected to the second surface (or the second electrode layer 221c) of the vibration part 221 by a film lamination process using the second adhesive layer 215 as an intermediary.

[0217] In the first vibration generator 210, the first adhesive layer 212 and the second adhesive layer 214 may be connected or bonded to each other between the first protective member 213 and the second protective member 215. For example, in the first vibration generator 210, the first adhesive layer 212 and the second adhesive layer 214 may be connected or bonded to each other at the edge portion between the first protective member 213 and the second protective member 215. Thereby, in the first vibration generator 210, the vibration part 221 may be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may completely surround the entire vibration part 221 of the first vibration generator 210. For example, the first adhesive layer 212 and the second adhesive layer 214 may be expressed as a cover member or the like, but are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 may be disposed on a first surface of the cover member, and the second protective member 215 may be disposed on a second surface of the cover member. For example, the first adhesive layer 212 and the second adhesive layer 214 are shown as the first adhesive layer 212 and the second adhesive layer 214 for convenience of explanation, but are not limited thereto, and may be disposed as one adhesive layer.

[0218] In the second vibration generator 230, the first adhesive layer 212 may be disposed between the vibration part 221 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode layer 221b of the vibration part 221 and the first protective member 213. The first protective member 213 may be disposed on the first surface (or the first electrode layer 221b) of the vibration part 221 via the first adhesive layer 212. For example, the first protective member 213 may be bonded or connected to the first surface (or the first electrode layer 221b) of the vibration part 221 by a film lamination process using the first adhesive layer 212 as an intermediary.

[0219] In the second vibration generator 230, the second adhesive layer 214 may be disposed between the vibration part 221 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode layer 221c of the vibration part 221 and the second protective member 215. The second protective member 215 may be disposed on the second surface (or the second electrode layer 221c) of the vibration part 221 via the second adhesive layer 214. For example, the second protective member 215 may be bonded or connected to the second surface (or the second electrode layer 221c) of the vibration part 221 by a film lamination process using the second adhesive layer 215 as an intermediate.

[0220] In the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 may be connected or bonded to each other between the first protective member 213 and the second protective member 215. For example, in the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 may be connected or bonded to each other at the edge portion between the first protective member 213 and the second protective member 215. Thereby, in the second vibration generator 230, the vibration part 221 may be surrounded by the first adhesive layer 212 and the second adhesive layer 214. For example, the first adhesive layer 212 and the second adhesive layer 214 may completely surround the entire vibration part 221 of the second vibration generator 230. For example, the first adhesive layer 212 and the second adhesive layer 214 may be expressed as a cover member or the like, but are not limited thereto. When the first adhesive layer 212 and the second adhesive layer 214 are cover members, the first protective member 213 may be disposed on a first surface of the cover member, and the second protective member 215 may be disposed on a second surface of the cover member. For example, the first adhesive layer 212 and the second adhesive layer 214 are shown as the first adhesive layer 212 and the second adhesive layer 214 for convenience of explanation, but are not limited thereto, and may be disposed as one adhesive layer.

[0221] In each of the first vibration generator 210 and the second vibration generator 230, the first adhesive layer 212 and the second adhesive layer 214 may each include an electrically insulating material. For example, the electrically insulating material may be a material that is adhesive and capable of being compressed and restored. For example, one or more of the first adhesive layer 212 and the second adhesive layer 214 may include, but are not limited to, an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin.

[0222] One or more of the first vibration generator 210 and the second vibration generator 230 according to the embodiments of the present specification may further include a first power supply line (PL1), a second power supply line (PL2), and a pad portion 217.

[0223] The first power supply line (PL1) of one or more of the first vibration generator 210 and the second vibration generator 230 may extend long along the second direction (Y), but is not limited thereto. The first power supply line (PL1) may be disposed on the first protective member 213 and electrically connected to the first electrode layer 221b. For example, the first power supply line (PL1) may be disposed on the back surface of the first protective member 213 facing the first electrode layer 221b and electrically connected to the first electrode layer 221b. For example, the first power supply line (PL1) may be disposed on the back surface of the first protective member 213 directly facing the first electrode layer 212b and directly electrically connected to the first electrode layer 221b. For example, the first power supply line (PL1) may be electrically connected to the first electrode layer 221b via an anisotropic conductive film. In another embodiment of the present disclosure, the first power supply line (PL1) may be electrically connected to the first electrode layer 221b through a conductive material (or particles) contained in the first adhesive layer 212.

[0224] According to an embodiment of the present specification, the first power supply line (PL1) of one or more of the first vibration generator 210 and the second vibration generator 230 may include at least one first power line protruding along a first direction (X) crossing the second direction (Y). The at least one first power line may be extended long from at least one of one side and the other side of the first power supply line (PL1) along the first direction (X) and electrically connected to the first electrode layer 221b. Thus, the at least one first power line may improve the uniformity of the vibration driving signal applied to the first electrode layer 221b.

[0225] The second power supply line (PL2) of one or more of the first vibration generator 210 and the second vibration generator 230 may be disposed on the second protective member 215 and electrically connected to the second electrode layer 221c. For example, the second power supply line (PL2) may be disposed on the back surface of the second protective member 215 facing the second electrode layer 221c and electrically connected to the second electrode layer 221c. For example, the second power supply line (PL2) may be disposed on the back surface of the second protective member 215 directly facing the second electrode layer 221c and electrically connected directly to the second electrode layer 221c. For example, the second power supply line (PL2) may be electrically connected to the second electrode layer 221c via an anisotropic conductive film. As another example of the present specification, the second power supply line (PL2) may be electrically connected to the second electrode layer 221c via a conductive material (or particles) contained in the second adhesive layer 214.

[0226] According to an embodiment of the present specification, the second power supply line (PL2) of one or more of the first vibration generator 210 and the second vibration generator 230 may include at least one second power line protruding along the first direction (X). The at least one second power line may be extended long from at least one of one side and the other side of the second power supply line (PL2) along the first direction (X) and electrically connected to the second electrode layer 221c. The at least one second power line may be overlapped or stacked with the at least one first power line. Thus, the at least one second power line may improve the uniformity of the vibration driving signal applied to the second electrode layer 221c.

[0227] The pad portion 217 may be electrically connected to one or more first portions (or one side, or one end) of the first power supply line (PL1) and the second power supply line (PL2). For example, the pad portion 217 may be disposed at one or more first end portions of the first protection member 213 and the second protection member 215. The pad portion 217 may be disposed at one or more first edge portions of the first protection member 213 and the second protection member 215. The pad portion 217 may be electrically connected to one or more first portions (or one side, or one end) of the first power supply line (PL1) and the second power supply line (PL2).

[0228] The pad unit 217 according to the embodiment of the present specification may include a first pad electrode electrically connected to a first portion (or one side or one end) of the first power supply line (PL1) and a second pad electrode electrically connected to a first portion (or one side or one end) of the second power supply line (PL2). For example, one or more of the first pad electrode and the second pad electrode may be exposed to a first edge portion of one or more of the first protective member 213 and the second protective member 215.

[0229] One or more of the first vibration generator 210 and the second vibration generator 230 according to embodiments of the present disclosure may further include a flexible cable 219 .

[0230] The flexible cable 219 may be electrically connected to the pad section 217 arranged on one or more of the first vibration generator 210 and the second vibration generator 230. Thus, the flexible cable 219 can supply a vibration drive signal (or an acoustic signal) provided from a vibration drive circuit to the corresponding vibration section 221. The flexible cable 219 according to the embodiment of the present specification may include a first terminal and a second terminal. The first terminal of the flexible cable 219 may be electrically connected to a first pad electrode of the pad section 217. The second terminal of the flexible cable 219 may be electrically connected to a second pad electrode of the pad section 217. For example, the flexible cable 219 may be configured as a flexible printed circuit cable or a flexible flat cable, but is not limited thereto.

[0231] The vibration drive circuit (or the acoustic processing circuit) can generate an AC vibration drive signal including a first vibration drive signal and a second vibration drive signal based on an acoustic source. The first vibration drive signal can be either a positive polarity (+) vibration drive signal or a negative polarity (-) vibration drive signal, and the second vibration drive signal can be either a positive polarity (+) vibration drive signal or a negative polarity (-) vibration drive signal. As an example of the present specification, the first vibration drive signal can be supplied to the first electrode layer 221b of the vibration unit 221 via a first terminal of the flexible cable 219, a first pad electrode of the pad unit 217, and a first power supply line (PL1). The second vibration drive signal can be supplied to the second electrode layer 221c of the vibration unit 221 via a second terminal of the flexible cable 219, a second pad electrode of the pad unit 217, and a second power supply line (PL2). As another embodiment of the present specification, the first vibration drive signal may be supplied to the second electrode layer 221c of the vibrating portion 221 via the first terminal of the flexible cable 219, the second pad electrode of the pad portion 217, and the second power supply line (PL2). The second vibration drive signal may be supplied to the first electrode layer 221b of the vibrating portion 221 via the second terminal of the flexible cable 219, the first pad electrode of the pad portion 217, and the first power supply line (PL1).

[0232] The connecting member 250 according to the embodiment of the present specification may be disposed between the first vibration generator 210 and the second vibration generator 230. For example, the connecting member 250 may be disposed between the second protective member 215 of the first vibration generator 210 and the first protective member 213 of the second vibration generator 230. For example, the connecting member 250 may be made of a material including an adhesive layer having excellent adhesion or bonding strength to each of the multiple vibration generators 210 and 230. For example, the connecting member 250 may include a foam pad, a double-sided tape, an adhesive, or the like. For example, the adhesive layer of the connecting member 250 may include, but is not limited to, epoxy, acrylic, silicone, or urethane.

[0233] 8 and 9 and the related description, the vibration device 200 according to the embodiment of the present specification includes the first vibration generator 210 and the second vibration generator 230, and the connecting member 250 disposed between the first vibration generator 210 and the second vibration generator 210, 230, but is not limited thereto. For example, the vibration device 200 according to the embodiment of the present specification may include a plurality of (e.g., three or more) vibration generators 210, 230 and a connecting member 250 disposed between the plurality of vibration generators 210, 230 according to the output characteristics and sound pressure characteristics of the sound generated by the displacement of the display panel 100 based on the size and weight of the display panel 100. In this case, the plurality of vibration generators 210, 230 may be stacked on top of each other while having the same size in order to maximize or increase the displacement amount or amplitude displacement of the vibration device 200. For example, the first and second portions (or tips, outer surfaces, or corners) 210a, 230a of one or more vibration parts 221 (or vibration layers 221a) of the multiple vibration generators 210, 230 may be substantially overlapped and stacked on one another without any misalignment. For example, the first and second portions (or tips, outer surfaces, or corners) 210a, 230a of one or more vibration parts 221 (or vibration layers 221a) of the multiple vibration generators 210, 230 may be substantially overlapped and stacked on one another within the range of error in the manufacturing process without any misalignment. For example, the first and second portions (or tips, outer surfaces, or corners) 210a, 230a of one or more vibration parts 221 (or vibration layers 221a) of the multiple vibration generators 210, 230 may be aligned with or located on a virtual extension line (VL). For example, the first and second portions (or tips, or outer surfaces, or each corner portion) 210a, 230a of each vibration portion 221 (or vibration layer 221a) of the multiple vibration generators 210, 230 can be precisely aligned with or precisely located on the imaginary extension line (VL).

[0234] FIG. 10 is another cross-sectional view taken along line II-II' shown in FIG.

[0235] 4 and 10, in the vibration device 200 according to another embodiment of the present specification, each of the first vibration generator 210 and the second vibration generator 230 can include at least one or more vibration structures 210A, 210B, 210C, and 210D, or a plurality of vibration structures 210A, 210B, 210C, and 210D. In FIG. 10, four vibration structures are included as an example, and each of the first vibration generator 210 and the second vibration generator 230 according to the embodiment of the present specification can be composed of two or more vibration structures.

[0236] Each of the multiple vibrating structures 210A, 210B, 210C, and 210D may be disposed electrically isolated from one another along each of the first direction (X) and the second direction (Y).

[0237] Each of the plurality of vibration structures 210A, 210B, 210C, and 210D can vibrate by alternately or repeatedly contracting and expanding due to the piezoelectric effect. For example, each of the plurality of vibration structures 210A, 210B, 210C, and 210D can be arranged or tiled at regular intervals along each of the first direction (X) and the second direction (Y). Thus, each of the first vibration generator 210 and the second vibration generator 230 in which the plurality of vibration structures 210A, 210B, 210C, and 210D are tiled can be, but is not limited to, a vibration array, a vibration array section, a vibration module array section, a vibration array structure, a tiling vibration array, a tiling vibration array module, or a tiling vibration film. The description of the plurality of vibration structures 210A, 210B, 210C, and 210D is substantially the same as that described in FIG. 4, so that the duplicated description thereof will be omitted or simplified.

[0238] Each of the first to fourth vibration structures 210A, 210B, 210C, and 210D according to the embodiments of the present specification may include a vibration part 221. The vibration part 221 may include a vibration layer 221a, a first electrode layer 221b, and a second electrode layer 221c. The explanations of the vibration layer 221a, the first electrode layer 221b, and the second electrode layer 221c are the same as those described in Figures 4, 5, 8, and 9, so that the duplicated explanations will be omitted or simplified.

[0239] The vibration layer 221a may be made of a ceramic-based material capable of realizing a relatively high vibration. For example, the vibration layer 221a may have a 1-3 composite structure having a piezoelectric characteristic of a 1-3 vibration mode, or a 2-2 composite structure having a piezoelectric characteristic of a 2-2 vibration mode. For example, the vibration layer 221a may include a first portion 211a and a second portion 211b, which are the same as the vibration part 211 described in FIG. 4 or similar to the vibration part 211 described in FIGS. 6A to 6F.

[0240] Each of the first vibration generator 210 and the second vibration generator 230 according to the embodiment of the present specification may include a first protective member 1213 and a second protective member 1215. The first protective member 1213 according to the embodiment of the present specification may be commonly disposed on the first surfaces of the plurality of vibration structures 210A, 210B, 210C, and 210D via a first adhesive layer 1212. The second protective member 1215 may be commonly disposed on the second surfaces of the first vibration generator 210 and the second vibration generator 230. The first protective member 1213 and the second protective member 1215 are substantially the same as the first protective member 213 and the second protective member 215 described in FIG. 4, FIG. 5, FIG. 8, and FIG. 9, and therefore a duplicated description thereof will be omitted.

[0241] The first adhesive layer 1212 may be disposed on the first surfaces of the plurality of vibrating structures 210A, 210B, 210C, 210D and between the plurality of vibrating structures 210A, 210B, 210C, 210D. For example, the first adhesive layer 1212 may be disposed on the back surface (or inner surface) of the first protective member 1213 facing the first surfaces of the first vibration generator 210 and the second vibration generator 230. For example, the first adhesive layer 1212 may be disposed on the first surfaces of the plurality of vibrating structures 210A, 210B, 210C, 210D and filled between the plurality of vibrating structures 210A, 210B, 210C, 210D.

[0242] The second adhesive layer 1214 may be disposed on the second surfaces of the plurality of vibrating structures 210A, 210B, 210C, 210D and between the plurality of vibrating structures 210A, 210B, 210C, 210D. For example, the second adhesive layer 1214 may be disposed on a front surface (or an inner surface) of the second protective member 1215 facing the second surfaces of the first vibration generator 210 and the second vibration generator 230. For example, the second adhesive layer 1214 may be disposed on the second surfaces of the plurality of vibrating structures 210A, 210B, 210C, 210D and filled between the plurality of vibrating structures 210A, 210B, 210C, 210D. The first adhesive layer 1212 and the second adhesive layer 1214 are substantially the same as the first adhesive layer 212 and the second adhesive layer 214 described with reference to FIGS. 4, 5, 8, and 9, and therefore will not be described again.

[0243] In other embodiments of the present specification, one or more of the first vibration generator 210 and the second vibration generator 230 may further include a first power supply line (PL1), a second power supply line (PL2), and a pad portion 217.

[0244] The first power supply line (PL1) may be disposed on the first protective member 1213. For example, the first power supply line (PL1) may be disposed on a rear surface of the first protective member 1213 facing the first surfaces of the first vibration generator 210 and the second vibration generator 230. The first power supply line (PL1) may be electrically connected to the first electrode layers 221b of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the first power supply line (PL1) may be directly electrically connected to the first electrode layers 221b of the plurality of vibrating structures 210A, 210B, 210C, and 210D. As an example of the present specification, the first power supply line (PL1) may be electrically connected to the first electrode layers 221b of the plurality of vibrating structures 210A, 210B, 210C, and 210D through an anisotropic conductive film. According to another embodiment of the present specification, the first power supply line (PL1) may be electrically connected to each of the first electrode layers 221b of the multiple vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the first adhesive layer 1212.

[0245] The first power supply line (PL1) according to the embodiment of the present specification may include a 1-1 upper power line (PL11) and a 1-2 upper power line (PL12) arranged along the second direction (Y). For example, the 1-1 upper power line (PL11) may be electrically connected to the first electrode layer 221b of each of the first and third vibrating structures 210A, 210C (or a first group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. For example, the first and third vibrating structures 210A, 210C may be arranged in a first row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. The first-2 upper power line (PL12) may be electrically connected to the first electrode layers 221b of the second and fourth vibrating structures 210B, 210D (or a second group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. For example, the second and fourth vibrating structures 210B, 210D may be arranged in a second row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D.

[0246] The second power supply line (PL2) may be disposed on the second protective member 1215. For example, the second power supply line (PL2) may be disposed on a first surface of the second protective member 1215 facing the second surfaces of the first vibration generator 210 and the second vibration generator 230. For example, the first surface of the second protective member 1215 may be the lower surface of the second protective member 1215. The second power supply line (PL2) may be electrically coupled to the second electrode layer 221c of each of the multiple vibrating structures 210A, 210B, 210C, and 210D. For example, the second power supply line (PL2) may be directly electrically coupled to the second electrode layer 221c of each of the multiple vibrating structures 210A, 210B, 210C, and 210D. In one embodiment of the present specification, the second power supply line (PL2) may be electrically connected to the second electrode layer 221c of each of the plurality of vibration structures 210A, 210B, 210C, and 210D via an anisotropic conductive film. In another embodiment of the present specification, the second power supply line (PL2) may be electrically connected to the second electrode layer 221c of each of the plurality of vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the second adhesive layer 1214.

[0247] The second power supply line (PL2) according to the embodiment of the present specification may include a 2-1 lower power line (PL21) and a 2-2 lower power line (PL22) arranged along the second direction (Y). For example, the 2-1 lower power line (PL21) may be electrically connected to the second electrode layer 221c of each of the first and third vibrating structures 210A, 210C (or a first group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. For example, the first and third vibrating structures 210A, 210C may be arranged in a first row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. The 2-2 lower power line (PL22) may be electrically connected to the second electrode layer 221c of the second and fourth vibrating structures 210B, 210D (or a second group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D. For example, the second and fourth vibrating structures 210B, 210D may be arranged in a second row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, 210D.

[0248] The pad unit 217 may be electrically connected to the first power supply line (PL1) and the second power supply line (PL2). For example, the pad unit 217 may be disposed on each of the first vibration generator 210 and the second vibration generator 230 so as to be electrically connected to one side (or one end) of at least one of the first power supply line (PL1) and the second power supply line (PL2).

[0249] The pad section 217 according to an embodiment of the present specification may include a first pad electrode electrically connected to one side of the first power supply line (PL1) and a second pad electrode electrically connected to one side of the second power supply line (PL2).

[0250] The first pad electrode may be commonly connected to one side (or one end) of each of the 1-1 and 1-2 upper power lines (PL11, PL12) of the first power supply line (PL1). For example, each of the 1-1 and 1-2 upper power lines (PL11, PL12) may be branched off from the first pad electrode.

[0251] The second pad electrode may be commonly connected to one side (or one end) of each of the 2-1 and 2-2 lower power lines (PL21, PL22) of the second power supply line (PL2). For example, each of the 2-1 and 2-2 lower power lines (PL21, PL22) may be branched off from the second pad electrode.

[0252] According to an embodiment of the present specification, one or more of the first power supply line (PL1), the second power supply line (PL2), and the pad portion 217 may be made of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material so as to be transparent, semi-transparent, or opaque.

[0253] According to other embodiments of the present disclosure, each of the first vibration generator 210 and the second vibration generator 230 may further include a flexible cable 219 .

[0254] The flexible cable 219 is electrically connected to the pad section 217 arranged on each of the first vibration generator 210 and the second vibration generator 230, and can supply a vibration drive signal provided from a vibration drive circuit to each of the first vibration generator 210 and the second vibration generator 230. The flexible cable 219 according to the embodiment of the present specification can include a first terminal and a second terminal. The first terminal of the flexible cable 219 can be electrically connected to a first pad electrode of the pad section 217. The second terminal of the flexible cable 219 can be electrically connected to a second pad electrode of the pad section 217. For example, the flexible cable 219 can be configured as a flexible printed circuit cable or a flexible flat cable, but is not limited thereto.

[0255] Therefore, the vibration device 200 according to another embodiment of the present specification includes a plurality of vibration structures 210A, 210B, 210C, and 210D arranged (or tiled) at regular intervals (D1, D2) so that the first vibration generator 210 and the second vibration generator 230 are not driven independently but are realized as one single vibration body, and thus can be driven as a large-area vibration body by the single-body vibration of the plurality of vibration structures 210A, 210B, 210C, and 210D. For example, the plurality of vibration structures 210A, 210B, 210C, and 210D can be one single vibration body arranged (or tiled) at regular intervals (D1, D2). As a result, the vibration device 200 can vibrate the entire area of ​​the display panel or vibrate a large area independently, so that the acoustic characteristics and sound pressure characteristics in the reproduction band and the low-frequency band of the sound output from the display panel can be increased or improved.

[0256] FIG. 11 is a diagram showing a vibrating layer of the vibrating section shown in FIG.

[0257] 11, the vibration layer 221a according to another embodiment of the present specification may include a plurality of first portions 221a1 and a plurality of second portions 221a2. For example, the plurality of first portions 221a1 and the plurality of second portions 221a2 may be arranged alternately and repeatedly along the second direction (Y) (or the first direction (X)). For example, the first direction (X) may be the lateral direction of the vibration layer 221a. The second direction (Y) may be the longitudinal direction of the vibration layer 221a intersecting with the first direction (X), but is not limited thereto. For example, the first direction (X) may be the longitudinal direction of the vibration layer 221a, and the second direction (Y) may be the lateral direction of the vibration layer 221a.

[0258] Each of the first portions 221a1 may be made of an inorganic material. The inorganic material may include the inorganic material described above. For example, each of the first portions 221a1 may be made of substantially the same material as the vibration portion 211 described in FIGS. 6A to 6F, and therefore, a duplicate description thereof will be omitted.

[0259] Each of the first portions 221a1 according to the embodiment of the present specification may be disposed between the second portions 221a2. The first portions 221a1 and the second portions 221a2 are substantially the same as the first portions 211a and the second portions 211b described in Figures 6A to 6F, and therefore a duplicated description thereof will be omitted.

[0260] The vibration part 221 of the first vibration generator 210 and the vibration part 221 of the second vibration generator 230 may overlap (or be stacked) with each other while having the same size, in order to maximize or increase the displacement amount or amplitude displacement of the vibration device 200. For example, the first portion (or tip, or outer surface, or each corner portion) 210a of each of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially aligned or overlapped with the second portion (or tip, or outer surface, or each corner portion) 230a of each of the vibration part 221 (or vibration layer 221a) of the second vibration generator 230. For example, the first portion (or tip, or outer surface, or each corner portion) 210a of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially aligned or overlapped with the second portion (or tip, or outer surface, or each corner portion) 230a of the vibration part 221 (or vibration layer 221a) of the second vibration generator 230 within the range of manufacturing process error without any deviation from each other. For example, the first portion (or tip, or outer surface, or each corner portion) 210a of the vibration part 221 (or vibration layer 221a) of the first vibration generator 210 may be aligned with or located on a virtual first extension line (VL1). The first portion (or tip, outer surface, or each corner portion) 210a of each of the vibration parts 221 (or vibration layer 221a) of the first vibration generator 210 may be accurately aligned with or accurately located on the virtual first extension line (VL1). The second portion (or tip, outer surface, or each corner portion) 230a of each of the vibration parts 221 (or vibration layer 221a) of the second vibration generator 230 may be aligned with or accurately located on the first extension line (VL1). For example, the second portion (or tip, outer surface, or each corner portion) 230a of each of the vibration parts 221 (or vibration layer 221a) of the second vibration generator 230 may be accurately aligned with or accurately located on the first extension line (VL1).

[0261] According to an embodiment of the present specification, the first portions 221a1 of the first vibration generator 210 and the first portions 221a1 of the second vibration generator 230 may be substantially overlapped and stacked while having the same size. For example, the first portions 221a1 of the first vibration generator 210 and the first portions 221a1 of the second vibration generator 230 may be substantially overlapped and stacked without any misalignment while having the same size. According to an embodiment of the present specification, the first portions (or tips, or outer surfaces, or corners) of the first portions 221a1 of the first vibration generator 210 may be substantially overlapped and stacked with the first portions (or tips, or outer surfaces, or corners) of the first portions 221a1 of the second vibration generator 230. For example, the first portion (or tip, outer surface, or each corner portion) of each of the first portions 221a1 of the first vibration generator 210 may be substantially overlapped and stacked with the first portion (or tip, outer surface, or each corner portion) of each of the first portions 221a1 of the second vibration generator 230 without any misalignment. For example, the first portion (or tip, outer surface, or each corner portion) of each of the first portions 221a1 of the first vibration generator 210 may be aligned with the first portion (or tip, outer surface, or each corner portion) of each of the first portions 221a1 of the second vibration generator 230 on the second extension line (VL2) or may be located on the second extension line (VL2). For example, the first portion (or tip, or outer surface, or each corner portion) of each of the multiple first portions 221a1 of the first vibration generator 210 can be precisely aligned with the second extension line (VL2) without any misalignment with the first portion (or tip, or outer surface, or each corner portion) of each of the multiple first portions 221a1 of the second vibration generator 230, or can be precisely located on the second extension line (VL2).

[0262] According to an embodiment of the present specification, the second portions 221a2 of the first vibration generator 210 may be substantially overlapped and stacked with the second portions 221a2 of the second vibration generator 230 while having the same size as each other. For example, the second portions 221a2 of the first vibration generator 210 may be substantially overlapped and stacked without any misalignment with the second portions 221a2 of the second vibration generator 230 while having the same size as each other. According to an embodiment of the present specification, the first portion (or tip, or outer surface, or each corner portion) 210a of each of the second portions 221a2 of the first vibration generator 210 may be substantially overlapped and stacked with the first portion (or tip, or outer surface, or each corner portion) 230a of each of the second portions 221a2 of the second vibration generator 230. For example, the first portion (or tip, outer surface, or each corner portion) 210a of each of the multiple second portions 221a2 of the first vibration generator 210 may be substantially overlapped and stacked with the first portion (or tip, outer surface, or each corner portion) 230a of each of the multiple second portions 221a2 of the second vibration generator 230 without any shifting. For example, the first portion (or tip, outer surface, or each corner portion) 210a of each of the multiple second portions 221a2 of the first vibration generator 210 may be aligned with the first portion (or tip, outer surface, or each corner portion) 230a of each of the multiple second portions 221a2 of the second vibration generator 230 on the second extension line (VL2) or may be located on the second extension line (VL2). For example, the first portion (or tip, or outer surface, or each corner portion) 210a of each of the plurality of second portions 221a2 of the first vibration generator 210 may be accurately aligned with the first portion (or tip, or outer surface, or each corner portion) 230a of each of the plurality of second portions 221a2 of the second vibration generator 230 on the second extension line (VL2) without any deviation from each other, or may be accurately located on the second extension line (VL2). Therefore, in the vibration device 200 according to the present specification, the vibration layer 221a of the first vibration generator 210 and the vibration layer 221a of the second vibration generator 230 are displaced in the same direction, so that the displacement amount or amplitude displacement can be maximized or increased, and thus the displacement amount (or bending force) or amplitude displacement of the display panel 100 can be increased (or maximized).

[0263] In FIG. 11 and the description related thereto, the vibration device 200 according to another embodiment of the present specification has been described as including the first and second vibration generators 210, 230, but is not limited thereto. For example, the vibration device 200 according to another embodiment of the present specification may include a plurality of (e.g., three or more) vibration generators 210, 230. In this case, the plurality of vibration generators 210, 230 may be stacked while having the same size so that the displacement amount or amplitude displacement of the vibration device 200 is maximized or increased. According to the embodiment of the present specification, the first portion 221a1 of the vibration generator 210 arranged on the upper floor (or upper floor) of the three or more vibration generators 210, 230 and the first portion 221a1 of the vibration generator 230 arranged on the lower floor (or lower floor) of the three or more vibration generators 210, 230 may be stacked substantially on each other. For example, the first portion 221a1 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the first portion 221a1 of the vibration generator 230 arranged in a lower layer among the three or more vibration generators 210, 230 may be substantially overlapped and stacked without any misalignment with each other. For example, the first portion 221a1 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the first portion 221a1 of the vibration generator 230 arranged in a lower layer may be aligned with or located on a virtual extension line (VL). For example, the first portion 221a1 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the first portion 221a1 of the vibration generator 230 arranged in a lower layer may be accurately aligned with or located on a virtual extension line (VL). Then, the second portion 221a2 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the second portion 221a2 of the vibration generator 230 arranged in a lower layer among the three or more vibration generators 210, 230 can be substantially overlapped and stacked with each other. For example, the second portion 221a2 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the second portion 221a2 of the vibration generator 230 arranged in a lower layer among the three or more vibration generators 210, 230 can be substantially overlapped and stacked with no misalignment with each other.For example, the second portion 221a2 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the second portion 221a2 of the vibration generator 230 arranged in a lower layer may be aligned with or located on a virtual extension line (VL). For example, the second portion 221a2 of the vibration generator 210 arranged in an upper layer among the three or more vibration generators 210, 230 and the second portion 221a2 of the vibration generator 230 arranged in a lower layer may be accurately aligned with or located on a virtual extension line (VL).

[0264] Figure 12A shows a device according to another embodiment of the present disclosure, Figure 12B shows a rear view of a device according to another embodiment of the present disclosure, and Figure 13 shows a cross-sectional view of line IV-IV' shown in Figure 12B.

[0265] 12A, 12B, and 13, in a device according to another embodiment of the present specification, the rear surface (or back surface) of the display panel 100 may include a first region (or first rear region) (A1) and a second region (or second rear region) (A2). For example, on the rear surface of the display panel 100, the first region (A1) may be the left rear region, and the second region (A2) may be the right rear region. The first and second regions (A1, A2) may be symmetrical about the center line (CL) of the display panel 100 based on the first direction (X), but are not limited thereto. For example, each of the first and second regions (A1, A2) may overlap with the display region of the display panel.

[0266] A vibration device 200 according to another embodiment of the present specification may include a first vibration device 210-1 and a second vibration device 210-2 disposed on the rear surface of the display panel 100.

[0267] The first vibrating device 210-1 may be disposed in a first region (A1) of the display panel 100. For example, the first vibrating device 210-1 may be disposed so as to be biased toward a center or an edge portion in the first region (A1) of the display panel 100 based on the first direction (X). The first vibrating device 210-1 according to the embodiment of the present specification may generate a second vibration sound (PVS2) or generate a second haptic feedback in the first region (A1) of the display panel 100 by vibrating the first region (A1) of the display panel 100. For example, the first vibrating device 210-1 according to the embodiment of the present specification may generate a second vibration sound (PVS2) or generate a second haptic feedback in the first region (A1) of the display panel 100 by directly vibrating the first region (A1) of the display panel 100. For example, the second vibration sound (PVS2) may be a left sound. The size of the first vibrating device 210-1 according to the embodiment of the present specification may be less than half the size of the first area (A1) or more than half the size of the first area (A1) depending on the characteristics of the second vibrating sound (PVS2) or the acoustic characteristics required for the device. In another embodiment of the present specification, the size of the first vibrating device 210-1 may have a size corresponding to the first area (A1) of the display panel 100. For example, the size of the first vibrating device 210-1 may be the same as the first area (A1) of the display panel 100 or may be smaller than the first area (A1).

[0268] The second vibrating device 210-2 may be disposed in the second region (A2) of the display panel 100. For example, the second vibrating device 210-2 may be disposed so as to be biased toward the center or edge portion in the second region (A2) of the display panel 100 with respect to the first direction (X). The second vibrating device 210-2 according to the embodiment of the present specification may vibrate the second region (A2) of the display panel 100 to generate a first vibration sound (PVS1) or generate a first haptic feedback in the second region (A2) of the display panel 100. For example, the second vibrating device 210-2 according to the embodiment of the present specification may directly vibrate the second region (A2) of the display panel 100 to generate a first vibration sound (PVS1) or generate a first haptic feedback in the second region (A2) of the display panel 100. For example, the first vibration sound (PVS1) may be a right-side sound. The size of the second vibration device 210-2 according to the embodiment of the present specification may be less than half the size of the second region (A2) or more than half the size of the second region (A2) depending on the characteristics of the first vibration sound (PVS1) or the acoustic characteristics required for the device. As another embodiment of the present specification, the size of the second vibration device 210-2 may be a size corresponding to the second region (A2) of the display panel 100. For example, the size of the second vibration device 210-2 may be the same as the second region (A2) of the display panel 100 or may be smaller than the second region (A2). Therefore, the first and second vibration devices 210-1, 210-2 may have the same size or different sizes depending on the left and right acoustic characteristics of the device and / or the acoustic characteristics of the device. And, the first and second vibration devices 210-1, 210-2 may be arranged in a symmetrical structure or an asymmetrical structure with the center line (CL) of the display panel 100.

[0269] Each of the first vibrating device 210-1 and the second vibrating device 210-2 includes one or more of the vibrating devices 200 described with reference to FIGS. 2 to 6F, and therefore a duplicated description thereof will be omitted.

[0270] The connecting member 150 according to the embodiment of the present specification may be disposed between each of the first vibrating device 210-1 and the second vibrating device 210-2 and the rear surface of the display panel 100. For example, each of the first vibrating device 210-1 and the second vibrating device 210-2 may be disposed on the rear surface of the display panel 100 via the connecting member 150. The connecting member 150 is substantially the same as the connecting member 150 described in FIG. 2A, and therefore a duplicated description thereof will be omitted.

[0271] A device according to embodiments herein may include a first member 510 and a second member 550. For example, a device according to embodiments herein may further include a second member 550 surrounding the first member 510.

[0272] Referring to FIG. 12B, the second member 550 can surround the first member 510. For example, the first member 510 can be, but is not limited to, a circle, an ellipse, a polygon, and a polygon with rounded corners. For example, the first member 510 can be, but is not limited to, a metal plate and paper. For example, the first member 510 can be, but is not limited to, a bass reproducing member or a bass reinforcing member. For example, the first member 510 can be, but is not limited to, a mass, a diaphragm, a drone cone, or a passive radiator.

[0273] The second member 550 has a soft characteristic. The second member 550 may be made of a material having elasticity. For example, the second member 550 may be, but is not limited to, rubber, silicone, coated cloth, metal, polymer film, plastic, paper, or epoxy resin. For example, the second member 550 may be made of a material different from that of the support member 300. For example, the second member 550 may be made of a material different from that of the second support member 330.

[0274] According to an embodiment of the present specification, the first member 510 and the second member 550 may be overlapped with the first vibration device 210-1 and the second vibration device 210-2, respectively. For example, the first member 510 may be overlapped with the center of the first vibration device 210-1 and the center of the second vibration device 210-2. The support member 300 may be disposed between the first vibration device 210-1 and the second vibration device 210-2. For example, the second support member 330 may be disposed between the first vibration device 210-1 and the second vibration device 210-2. The first member 510 and the second member 550 may be disposed on the same plane as the support member 300. For example, the first member 510 and the second member 550 may be disposed on the same plane as the second support member 300. The second member 550 may be coupled to the support member 300. For example, the second member 550 may be coupled to the second support member 330. For example, the first member 510 may be connected to the second member 500. For example, the first member 510 may be disposed between the second member 550. For example, the first member 510 and the second member 550 may not be disposed in an area where the vibration device 200 is not disposed. The first member 510 may vibrate due to the vibration of the vibration device 200. As a result, the first member 510 and / or the second member 550 may generate sound or vibration on the rear surface of the support member 300. The description of the first member 510 and the second member 550 is the same as or similar to that described in FIG. 3, and therefore will not be repeated.

[0275] Therefore, the device according to the other embodiments of the present specification can provide sounds to a user by outputting the first vibration sound (or right side sound) (PVS1) and the second vibration sound (or left side sound) (PVS2) to the front of the display panel 100 via the first vibrating device 210-1 and the second vibrating device 210-2. Furthermore, by forming the first member 510 and the second member 550 on the support member 300, it is possible to provide a device in which the acoustic characteristics and / or sound pressure characteristics in the low frequency range can be further improved.

[0276] Figure 14 is another cross-sectional view taken along line IV-IV' in Figure 12B. Figure 14 shows an additional plate in the device shown in Figure 13. Therefore, in the following, redundant descriptions of the remaining components other than the plate and the components related thereto will be omitted or simplified.

[0277] Referring to FIG. 14, a device according to another embodiment of the present disclosure may include a display panel 100 and a vibration device 200, and may further include a plate 170 disposed between the display panel 100 and the vibration device 200.

[0278] The display panel 100 and the vibration device 200 are substantially the same as the display panel 100 and the vibration device 200 described with reference to FIGS. 2 to 6F, respectively, and therefore, a duplicated description thereof will be omitted or simplified.

[0279] The plate 170 may be disposed between each of the first vibrating device 210-1 and the second vibrating device 210-2 and the rear surface of the display panel 100.

[0280] The plate 170 can dissipate heat generated from the display panel 100, or reinforce the mass of each of the first vibrating device 210-1 and the second vibrating device 210-2 arranged or suspended from the rear surface of the display panel 100. The plate 170 can have the same shape and size as the rear surface of the display panel 100, or the same shape and size as the vibrating device 200. In another embodiment of the present specification, the plate 170 can have a different size than the display panel 100. For example, the plate 170 can be smaller than the size of the display panel 100. In another embodiment of the present specification, the plate 170 can have a different size than the vibrating device 200. For example, the plate 170 can be larger or smaller than the size of the vibrating device 200. The vibrating device 200 can be the same or smaller than the size of the display panel 100.

[0281] The plate 170 according to the embodiment of the present specification may include a metallic material or a non-metallic material, for example, the plate 170 may be made of one or more of the following materials, but is not limited thereto: stainless steel, aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy.

[0282] The plate 170 according to the embodiment of the present specification may include a plurality of openings. The plurality of openings may be configured to have a certain size and a certain interval. For example, the plurality of openings may be formed along the first direction (X) and the second direction (Y) to have a certain size and a certain interval. Each of the plurality of openings allows the sound waves (or sound pressure) caused by the vibration of the vibration device 200 to be concentrated on the display panel 100 without being dispersed by the plate 170, thereby minimizing the loss of vibration caused by the plate 170 and increasing the sound pressure characteristic of the sound generated by the vibration of the display panel 100. For example, the plate 170 including the plurality of openings may have a mesh shape. For example, the plate 170 including the plurality of openings may be a mesh plate.

[0283] According to the embodiment of the present specification, the plate 170 may be connected or coupled to a rear surface of the display panel 100. For example, when the display panel 100 is a light-emitting display panel, the plate 170 may be disposed on a rear surface of an encapsulation unit (or an encapsulation substrate) of the light-emitting display panel 100. The plate 170 may be disposed on the rear surface of the encapsulation unit and configured in a bonded structure. The plate 170 may dissipate heat generated from the display panel 100. For example, the plate 170 may be expressed as a heat dissipation member, a heat dissipation plate, a heat sink, or the like, but is not limited thereto.

[0284] According to the embodiment of the present specification, the plate 170 may reinforce the mass of the vibration device 200 disposed or suspended from the rear surface of the display panel 100. As a result, the plate 170 may reduce the resonant frequency of the vibration device 200 due to an increase in the mass of the vibration device 200. Therefore, the plate 170 may increase the acoustic characteristics of the bass band and the sound pressure characteristics of the bass band of the sound generated in conjunction with the vibration of the vibration device 200, and improve the flatness of the sound pressure characteristics. Here, the flatness of the acoustic characteristics may be the magnitude of the deviation between the maximum sound pressure and the minimum sound pressure. For example, the plate 170 may be expressed as a weight member, a mass member, or an acoustic flattening member, but is not limited thereto.

[0285] According to the embodiments of the present specification, the displacement (or bending force) and amplitude displacement (or vibration width) of the display panel 100 on which the plate 170 is disposed may decrease as the thickness of the plate 170 increases due to the rigidity of the plate 170. As a result, the acoustic characteristics and sound pressure characteristics of the low frequency band of the sound generated by the displacement (or vibration) of the display panel 100 may increase.

[0286] The plate 170 according to the embodiment of the present specification may be coupled or connected to the rear surface of the display panel 100 via a connecting member (or a fourth connecting member, or a plate connecting member) 190.

[0287] The connecting member 190 according to the embodiment of the present specification may include an adhesive layer having excellent adhesion or bonding strength to each of the rear surface of the display panel 100 and the vibrating device 200. For example, the connecting member 190 may include a foam pad, a double-sided tape, or an adhesive. For example, the adhesive layer of the connecting member 190 may include, but is not limited to, epoxy, acrylic, silicone, or urethane. For example, the adhesive layer of the connecting member 190 may be the same as the adhesive layer of the connecting member 150, but is not limited to this. For example, the adhesive layer of the connecting member 190 may include an acrylic-based material (or material) having relatively excellent adhesion and high hardness among acrylic and urethane so that the vibration of the vibrating device 200 is well transmitted to the display panel 100. In another embodiment of the present specification, the adhesive layer of the connecting member 190 may be configured differently from the adhesive layer of the connecting member 150.

[0288] The vibration device 200 can be supported or hung on the rear surface of the plate 170 by being connected or coupled to the rear surface of the plate 170 via the above-mentioned coupling members 150. Each of the first vibration device 210-1 and the second vibration device 210-2 of the vibration device 200 can be supported or hung on the rear surface of the plate 170 by being connected or coupled to the rear surface of the plate 170 via the above-mentioned coupling members 150.

[0289] The plate 170 according to the embodiment of the present specification may be integrated with the vibration device 200 or may be included in the configuration of the vibration device 200. For example, the plate 170 and the vibration device 200 may be configured as one structure having one body or one part (or module). Thus, when the plate 170 is disposed between the rear surface of the display panel 100 and the vibration device 200, the assembly process between the display panel 100 and the vibration device 200 may be facilitated due to the unification (or modularization) of parts between the plate 170 and the vibration device 200.

[0290] According to another embodiment of the present specification, when the plate 170 and the vibration device 200 are configured as one structure or one part (or module) consisting of one fuselage, the non-display panel can be configured as a vibration plate. The plate 170 and the vibration device 200 can be disposed on the non-display panel. The plate 170 and the vibration device 200 can be coupled or connected to each other via the connecting member 150. For example, the non-display panel can be, but is not limited to, wood, plastic, glass, cloth, paper, leather, an interior material of an automobile, an interior ceiling of a building, and an interior material of an aircraft. Thus, the non-display panel can vibrate to output sound. According to another embodiment of the present specification, when the plate 170 and the vibration device 200 are configured as one structure or one part (or module) consisting of one fuselage, the plate 170 can be configured as a vibration plate. For example, the plate 170 may be made of any one or more of the following materials, but is not limited to: stainless steel, aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy. For example, in the module (or structure) of the plate 170 and the vibration device 200, the plate 170 may be made of any one or more of the following single or composite nonmetallic materials, but is not limited to: wood, plastic, glass, cloth, paper, and leather.

[0291] Therefore, the device according to the other embodiment of the present specification can provide sound to a user by outputting the first vibration sound (or right side sound) (PVS1) and the second vibration sound (or left side sound) (PVS2) to the front of the display panel 100 via the first vibrating device 210-1 and the second vibrating device 210-2. Also, in the device according to the other embodiment of the present specification, the resonant frequency of the vibration device 200 can be reduced by the plate 170, and the heat of the display panel 100 can be dissipated by the plate 170.

[0292] Fig. 15 is another cross-sectional view taken along line IV-IV' in Fig. 12B. Fig. 16 is another cross-sectional view taken along line IV-IV' in Fig. 12B. Fig. 16 shows the device shown in Fig. 15 with an additional plate.

[0293] 15 and 16, in a device according to another embodiment of the present specification, the vibration device 200 may include a first vibration device 220-1 and a second vibration device 220-2 disposed on the rear surface of the display panel 100. For example, the first vibration device 220-1 and the second vibration device 220-2 may include one or more of the vibration devices 200 described in FIGS. 7 to 11. The display panel 100 and the vibration device 200 are substantially the same as the display panel 100 and the vibration device 200 described in FIGS. 7 to 11, respectively, and therefore the description thereof will be omitted or simplified. The description of the hole 301 is substantially the same as that described in FIGS. 1 and 2, and therefore the description thereof will be omitted or simplified. The description of the plate 170 is substantially the same as that described in FIG. 14, and therefore the description thereof will be omitted or simplified.

[0294] The vibration device 200 according to the embodiment of the present specification has a first size and includes a plurality of vibration generators 210, 230 that are stacked on top of each other, thereby minimizing the reduction in the amount of displacement of the display panel 100 due to the thickness of the plate 170. In addition, the vibration device 200 according to the embodiment of the present specification has a first size and includes a plurality of vibration generators 210, 230 that are stacked on top of each other, thereby increasing or maximizing the amount of displacement of the display panel 100, thereby increasing or improving the acoustic characteristics and sound pressure characteristics of the low-frequency range of sound generated by the displacement of the display panel 100. Therefore, in the device according to another embodiment of the present specification, the vibration device 200 can increase or maximize the amount of displacement of the display panel 100 on which the plate 170 is disposed, due to the stacked structure of the vibration generators 210, 230 that are stacked on top of each other. The plate 170 can have a thickness that can smoothly dissipate heat from the display panel 100.

[0295] The plate 170 according to the embodiment of the present specification may be connected or coupled to the front surface of the vibration device 200 via the above-mentioned coupling member 150. For example, the plate 170 may be connected or coupled to the top vibration generator of the multiple vibration generators 210, 230 of the vibration device 200 via the coupling member 150. For example, when the vibration device 200 has first and second vibration generators 210, 230, the plate 170 may be connected or coupled to the first surface of the second vibration generator 230 or the second surface of the first vibration generator 210 via the coupling member 150.

[0296] 7 to 11, the device according to another embodiment of the present specification can increase or improve the acoustic characteristics and sound pressure characteristics in the low frequency range of the sound generated by the displacement of the display panel 100 due to the laminated structure of the vibration generators 210 and 230. Also, the device according to another embodiment of the present specification can reduce the resonance frequency of the vibration device 200 by the plate 170, and can dissipate heat from the display panel 100 by the plate 170. And, by forming the holes 301 in the support member 300, a device can be provided in which the acoustic characteristics and / or sound pressure characteristics in the low frequency range can be improved.

[0297] Fig. 17 is a diagram showing an apparatus according to another embodiment of the present specification. Fig. 17 shows an apparatus in which a partition is added to the apparatus shown in Figs. 13 and 14. Therefore, in the following description, the redundant description of the remaining configurations except for the partitions and the configurations related thereto will be omitted or simplified. The description of the partitions may be similarly applied to the apparatuses of Figs. 15 and 16.

[0298] Referring to FIG. 17, a device according to another embodiment of the present disclosure may further include a partition disposed between the rear surface of the display panel 100 and the support member 300. In the embodiment shown in FIG.

[0299] The partition according to the embodiment of the present specification may further include a first partition member 610 and a second partition member 620 disposed between the first vibration device 210-1 and the second vibration device 210-2.

[0300] According to an embodiment of the present specification, the third partition member 630 may be disposed to entirely surround the first vibration device 210-1 and the second vibration device 210-2. The fourth partition member 640 (or the first enclosure) may surround the first vibration device 210-1. The fifth partition member 650 (or the second enclosure) may surround the second vibration device 210-2. The partitions will be described later with reference to FIG. 19.

[0301] According to an embodiment of the present specification, the first member 510 and the second member 550 may be overlapped with the first vibration device 210-1 and the second vibration device 210-2, respectively. For example, the first member 510 and the second member 550 may be disposed inside one or more partition members of the third partition member 630 and the fourth partition member 640. For example, the first member 510 and the second member 550 may be disposed inside one or more partition members of the third partition member 630 and the fifth partition member 650. For example, the first member 510 and the second member 550 may not be disposed in an area where the vibration device 200 is not disposed.

[0302] According to an embodiment of the present specification, the fourth partition member 640 and the fifth partition member 650 may be disposed between the rear surface of the display panel 100 and the first support member 310. The first support member 310 may facilitate adhesion of the fourth partition member 640 and the fifth partition member 650 disposed on the display panel 100. In another embodiment of the present specification, the first support member 310 may be omitted.

[0303] According to an embodiment of the present specification, the first partition member 610 may be disposed between the first vibrating device 210-1 and the second vibrating device 210-2. For example, the second partition member 620 may be disposed between the first vibrating device 210-1 and the second vibrating device 210-2. The first partition member 610 and the second partition member 620 may be disposed between the rear surface of the display panel 100 and the first support member 310. The first support member 310 may facilitate adhesion of the first partition member 610 and the second partition member 620 disposed on the display panel 100. As another embodiment of the present specification, the first support member 310 may be omitted.

[0304] Figures 18A to 18C are diagrams showing a device according to another embodiment of the present specification. Figures 18A to 18C are other cross-sectional views taken along line IV-IV' shown in Figure 12B. The explanations for Figures 18A to 18C can be similarly applied to the devices in Figures 15 and 16.

[0305] 18A, the second member 550 can have a concave shape. For example, the second member 550 can be a roll shape with a concave bottom. For example, the second member 550 can have a concave shape toward the back surface of the support member 300. For example, the second member 550 can be a normal roll shape. Or, the second member 550 can be a roll shape with a concave bottom, in which case the second member 550 can be a reverse roll shape.

[0306] 18B, the second member 550 may have a convex shape. For example, the second member 550 may be a roll shape with a convex surface on top. For example, the second member 550 may have a convex shape toward the front surface of the display panel 100. For example, the second member 550 may have a reverse roll shape. Or, the second member 550 may have a convex surface on top, in which case the second member 550 may have a normal roll shape.

[0307] 18C, the second member 550 may have an "S" shape. For example, the second member 550 may be in the shape of an "S" roll. For example, the second member 550 may be in the shape of an "S" roll in which a number of concave shapes and convex shapes are connected. For example, the second member 550 may be in the shape of a bellows in which a number of concave shapes and convex shapes are connected.

[0308] According to the embodiments of the present specification, the second member 550 is configured to provide a restoring force when the first member 510 vibrates, and the weight (or mass) of the first member 510 and the restoring force of the second member 550 can stably reproduce low-frequency sounds.

[0309] Fig. 19 is a diagram showing an apparatus according to another embodiment of the present specification. Fig. 19 shows an apparatus in which partitions are added to the apparatuses shown in Figs. 2 to 5, 7, 13, and 14. Therefore, in the following description, redundant descriptions of the remaining configurations except for the partitions and the configurations related thereto will be omitted or simplified. The description of the partitions may be similarly applied to the apparatuses in Figs. 8 to 11, 15, and 16.

[0310] 13, 14 and 19, a device according to another embodiment of the present specification may further include a partition 600 dividing the first area (A1) and the second area (A2) of the display panel 100.

[0311] The partition 600 may be an air gap or a space where the first and second vibration sounds (PVS1, PVS2) are generated when the display panel 100 is vibrated by the first vibrating device 210-1 and the second vibrating device 210-2. For example, the partition 600 may separate the first and second vibration sounds (PVS1, PVS2) or separate channels, and may prevent or reduce deterioration of the characteristics of the first and second vibration sounds (PVS1, PVS2) due to interference between the first and second vibration sounds (PVS1, PVS2). The partition 600 may be expressed as, but is not limited to, a sound blocking member, a sound separating member, a space separating member, an enclosure, or a baffle.

[0312] The partition 600 according to embodiments of the present disclosure may include a first partition member 610 and a second partition member 620 disposed between the first vibration device 210-1 and the second vibration device 210-2.

[0313] The first partition member 610 and the second partition member 620 may be disposed between the display panel 100 and the support member 300. For example, the first partition member 610 and the second partition member 620 may be disposed between the display panel 100 and the second support member 330. For example, the first partition member 610 and the second partition member 620 may be disposed between the display panel 100 and the support member 300 corresponding to a middle region of the display panel 100. The first partition member 610 and the second partition member 620 can separate the second vibration sound (PVS2) generated by the first vibration device 210-1 and the first vibration sound (PVS1) generated by the second vibration device 210-2. For example, the first partition member 610 and the second partition member 620 can prevent vibrations generated in the first region (A1) of the display panel 100 by the first vibrating device 210-1 from being transmitted to the second region (A2) of the display panel 100, or can block vibrations generated in the second region (A2) of the display panel 100 by the second vibrating device 210-2 from being transmitted to the first region (A1) of the display panel 100. As a result, the first partition member 610 and the second partition member 620 can attenuate or absorb the vibrations of the display panel 100 at the center of the display panel 100, thereby blocking the transmission of sound in the first region (A1) to the second region (A2) or the transmission of sound in the second region (A2) to the first region (A1). Therefore, the first partition member 610 and the second partition member 620 can further improve the sound output characteristics of the device (or display device) by separating the left and right sounds. As a result, the device according to the embodiment of the present specification can output sounds including sounds in the form of two channels to the front of the display panel 100 by separating the left and right sounds by the first partition member 610 and the second partition member 620.

[0314] According to an embodiment of the present specification, the partition 600 may be made of an elastic material that can be compressed to a certain degree. For example, the partition 600 may be made of a polyurethane or polyolefin material, but is not limited thereto. In another embodiment of the present specification, the partition 600 may be made of a single-sided tape, a single-sided foam tape, a double-sided tape, or a double-sided foam tape, but is not limited thereto.

[0315] According to an embodiment of the present specification, any one of the first partition member 610 and the second partition member 620 can be omitted. In this case, any one of the first partition member 610 and the second partition member 620 is disposed between the first vibrating device 210-1 and the second vibrating device 210-2, so that left and right sounds can be separated. For example, when the second partition member 620 of the first partition member 610 and the second partition member 620 is omitted, the first partition member 610 can be disposed between the display panel 100 and the support member 300, which corresponds to the center line (CL) on the rear surface of the display panel 100.

[0316] Therefore, according to the embodiments of the present specification, the sound output characteristics of the device (or display device) can be further improved by separating left and right sounds using the first partition member 610 and the second partition member 620, and a device including the first partition member 610 or the second partition member 620 can output sound including sound in the form of two channels to the front of the display panel 100 by separating the left and right sounds using the first partition member 610 or the second partition member 620.

[0317] The partition 600 according to the embodiment of the present specification may further include a third partition member 630 disposed between the display panel 100 and the support member 300.

[0318] The third partition member 630 may be disposed to surround the entire first vibrating device 210-1 and the second vibrating device 210-2. For example, the third partition member 630 may be disposed along between an edge portion of the rear surface of the display panel 100 and an edge portion of the front surface of the support member 300. The third partition member 630 may be expressed as, but is not limited to, an edge partition, a sound blocking member, an edge enclosure, an edge baffle, or the like. For example, the third partition member 630 may be disposed adjacent to or in contact with the first connecting member 401 shown in FIGS. 13 to 17 and may be surrounded by the first connecting member 401. According to another embodiment of the present specification, the third partition member 630 may be realized as one body together with the first connecting member 401.

[0319] The third partition member 630, together with the first partition member 610 and the second partition member 620, may provide first to third air gaps (AG1, AG2, AG3) between the display panel 100 and the support member 300. For example, each of the first to third air gaps (AG1, AG2, AG3) may be expressed as, but is not limited to, a vibration space, a sound pressure space, a sound box, a sound part, a resonance box, or a resonance part.

[0320] The first air gap (AG1) may be provided in a first region (A1) of the display panel 100. For example, the first air gap (AG1) may be provided in the first region (A1) of the display panel 100 surrounded by a first partition member 610 and a third partition member 630 disposed in the first region (A1) of the display panel 100.

[0321] The second air gap (AG2) may be provided in the second region (A2) of the display panel 100. For example, the second air gap (AG2) may be provided in the second region (A2) of the display panel 100 surrounded by the second partition member 620 or a third partition member 630 disposed in the second region (A2) of the display panel 100.

[0322] The third air gap (AG3) may be provided in an intermediate region of the rear surface of the display panel 100. For example, the third air gap (AG3) may be provided in an intermediate region of the rear surface of the display panel 100 surrounded by the first and second partition members 610, 620 and the third partition member 630. For example, the third air gap (AG3) may be provided between the first air gap (AG1) and the second air gap (AG2) including the midline (CL) of the rear surface of the display panel 100. The third air gap (AG3) may be expressed as a sound separation space, a sound shielding space, or a sound interference prevention space, but is not limited thereto. The third air gap (AG3) separates the first air gap (AG1) and the second air gap (AG2) to prevent a resonance phenomenon or an interference phenomenon in a certain frequency band that occurs in each of the first air gap (AG1) and the second air gap (AG2).

[0323] The first vibration device 210-1 may be surrounded by a third partition member 630 providing a first air gap (AG1) and a third partition member 620. The second vibration device 210-2 may be surrounded by a third partition member 630 providing a second air gap (AG2) and a second partition member 620.

[0324] When any one of the first partition member 610 and the second partition member 620 is omitted, the third air gap (AG3) may be omitted.

[0325] Therefore, the third partition member 630 surrounds the space between the display panel 100 and the support member 300, and also surrounds the first vibrating device 210-1 and the second vibrating device 210-2 together with the first partition member 610 and the second partition member 630, respectively, thereby ensuring vibration spaces for the first vibrating device 210-1 and the second vibrating device 210-2, thereby increasing the sound pressure characteristics of the left and right sounds. The third partition member 630 can also block the outflow of sound or sound pressure to the outside through the side surface between the display panel 100 and the support member 300, thereby further improving the sound output characteristics of the device (or display device).

[0326] The partition 600 according to the embodiment of the present specification may further include a fourth partition member 640 and a fifth partition member 650. The fourth partition member 640 (or a first enclosure) may surround the first vibration device 210-1. The fifth partition member 650 (or a second enclosure) may surround the second vibration device 210-2.

[0327] The fourth partition member 640 may be disposed between the display panel 100 and the support member 300 to correspond to the first air gap (AG1). For example, the fourth partition member 640 may independently surround the first vibrating device 210-1. The fourth partition member 640 according to an embodiment of the present specification may have a square shape surrounding the first vibrating device 210-1, but is not limited thereto. The fourth partition member 640 may have an overall same shape as the first vibrating device 210-1 or a different shape. For example, when the first vibrating device 210-1 has a square shape, the fourth partition member 640 may have a square shape having a size relatively larger than that of the first vibrating device 210-1, or may have a circular shape or an elliptical shape.

[0328] The fourth partition member 640 can limit (or define) the vibration area (or vibration area) of the display panel 100 caused by the first vibrating device 210-1. For example, in the first region (A1) of the display panel 100, as the size of the fourth partition member 640 increases, the vibration area of ​​the first region (A1) increases, and the characteristics of the low frequency range of the left sound can be improved. In another embodiment of the present specification, in the first region (A1) of the display panel 100, as the size of the fourth partition member 640 decreases, the vibration area of ​​the first region (A1) decreases, and the characteristics of the high frequency range of the left sound can be improved. Therefore, the size of the fourth partition member 640 can be set according to the characteristics of the frequency range required according to the vibration of the display panel 100 caused by the vibration of the first vibrating device 210-1.

[0329] The fifth partition member 650 may be disposed between the display panel 100 and the support member 300 to correspond to the second air gap (AG2). The fifth partition member 650 may independently surround the second vibrating device 210-2. The fifth partition member 650 according to an embodiment of the present specification may have the same shape as the fourth partition member 640 and a symmetrical structure with respect to the midline (CL) of the rear surface of the display panel 100 for symmetry between the left and right acoustics.

[0330] The fifth partition member 650 can limit (or define) the vibration region (or vibration area) of the display panel 100 caused by the second vibrating device 210-2. For example, in the second region (A2) of the display panel 100, as the size of the fifth partition member 650 increases, the vibration region of the second region (A2) increases, and the characteristics of the low frequency range of the right sound can be improved. As another embodiment of the present specification, in the second region (A2) of the display panel 100, as the size of the fifth partition member 650 decreases, the vibration region of the second region (A2) decreases, and the characteristics of the high frequency range of the right sound can be improved. Therefore, the size of the fifth partition member 650 can be set according to the characteristics of the frequency range required according to the vibration of the display panel 100 caused by the vibration of the second vibrating device 210-2.

[0331] The fourth partition member 640 and the fifth partition member 650 limit the vibration regions (or vibration areas) of the vibration devices 210-1 and 210-2, thereby improving the symmetry of the left and right sounds generated by the vibration of the display panel 100, and optimizing the sound pressure characteristics and the reproduction sound range band of each of the left and right sounds. For example, when the fourth partition member 640 and the fifth partition member 650 are arranged, the third partition member 630 may be omitted. As another embodiment of the present specification, when the fourth partition member 640 and the fifth partition member 650 are arranged, any one or more of the first partition member 610, the second partition member 620, and the third partition member 630 may be omitted.

[0332] Therefore, the device according to the other embodiment of the present specification can optimize the sound pressure characteristics and the reproduction sound range band of each of the left and right sounds by including the partition 600. For example, the device according to the other embodiment of the present specification can include at least one of the first partition member 610 and the second partition member 620. For example, the device according to the other embodiment of the present specification can include at least one of the first partition member 610 and the second partition member 620 and the third partition member 630. For example, the device according to the other embodiment of the present specification can include the third to fifth partition members 630, 640, and 650. For example, the device according to the other embodiment of the present specification can include all of the first to fifth partition members 610, 620, 630, 640, and 650.

[0333] Therefore, the device according to the other embodiment of the present specification can provide sound to a user by outputting the first vibration sound (or right side sound) (PVS1) and the second vibration sound (or left side sound) (PVS2) to the front of the display panel 100 via the first vibrating device 210-1 and the second vibrating device 210-2. The device according to the other embodiment of the present specification can output sound in the form of two channels to the front of the display panel 100 by separating the first and second vibration sounds (PVS1, PVS2) by the partition 600. In addition, the device according to the other embodiment of the present specification can improve the flatness of the sound pressure characteristics by reducing the resonance frequency due to the plates realized in each of the first vibrating device 210-1 and the second vibrating device 210-2.

[0334] Fig. 20 is a diagram showing a device according to another embodiment of the present specification. Fig. 21A is a cross-sectional view taken along line V-V' in Fig. 20. Fig. 21B is another cross-sectional view taken along line V-V' in Fig. 19. Fig. 20 shows a device shown in Fig. 19 with a pad member added thereto. For example, a pad member is added to the devices shown in Figs. 3 to 5, 7, 13, and 14. Therefore, in the following, redundant descriptions of the remaining configurations, excluding the pad member and the configurations related thereto, will be omitted or simplified.

[0335] 20, 21A, and 21B, in a device according to another embodiment of the present specification, the vibration device may include a first vibration device 210-1 and a second vibration device 210-2. When the first vibration device 210-1 and the second vibration device 210-2 include a plurality of vibration structures, the sound pressure may be reduced at a particular frequency. For example, the sound pressure may be reduced in the mid-frequency band. The sound pressure may be reduced because resonance or anti-resonance occurs at the boundary between the plurality of vibration structures. For example, the sound pressure may be reduced because resonance or anti-resonance occurs at the center part between the plurality of vibration structures. Therefore, in order to improve the reduction in sound pressure due to resonance or anti-resonance, the interval between the plurality of vibration structures may be reduced. However, due to process difficulties for arranging the plurality of vibration structures, it is difficult to reduce the interval between the plurality of vibration structures. In order to improve the reduction in sound pressure, a pad member may be arranged at the boundary between the plurality of vibration structures.

[0336] The vibration device 200 according to another embodiment of the present specification may further include a pad member disposed at the boundary between the plurality of vibrating structures in order to improve deterioration or dip in sound quality occurring at the boundary region between the plurality of vibrating structures. For example, the pad member may suppress or reduce the resonance frequency at the boundary between the plurality of vibrating structures. The pad member may be configured to reduce a drop in sound pressure occurring at the boundary between the plurality of vibrating structures.

[0337] 20 and 21A, the pad member may be disposed between two or more vibrating structures. For example, the first pad member 701 may be disposed between the multiple vibrating structures of the first vibrating device 210-1. For example, the multiple vibrating structures may overlap with the first pad member 701. The second pad member 702 may be disposed between the multiple vibrating structures of the second vibrating device 210-2. For example, the multiple vibrating structures may overlap with the second pad member 702. The first pad member 701 and the second pad member 702 may be a resonance control pad, an external resonance pad, a gap pad, or a resonance control portion, and are not limited to the terms.

[0338] The first pad member 701 may be disposed between the first vibrating device 210-1 and the support member 300. For example, the first pad member 701 may have a "+" shape superimposed between the multiple vibrating structures of the first vibrating device 210-1. The second pad member 702 may be disposed between the second vibrating device 210-2 and the support member 300. For example, the second pad member 702 may have a "+" shape superimposed between the multiple vibrating structures of the second vibrating device 210-2.

[0339] Referring to FIG. 21A, the first pad member 701 may be disposed between the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibrating device 210-1. For example, the first pad member 701 may be disposed between the first vibrating device 210-1 and the support member 300. For example, the first pad member 701 may be disposed between the rear surface of the first vibrating device 210-1 and the upper surface of the support member 300. The size of the first pad member 701 and the second pad member 702 may be configured to be the same as or different from the size of the area between the multiple vibrating structures. For example, the width of the first pad member 701 and the second pad member 702 may be the same as or different from the width between the third vibrating structure 210C and the fourth vibrating structure 210D based on the first direction (X direction).

[0340] According to an embodiment of the present specification, each of the plurality of vibration structures may include a vibration layer (or vibration part) 211, a first electrode layer (E1) disposed on a first surface of the vibration layer 211, and a second electrode layer (E2) disposed on a second surface different from the first surface of the vibration layer 211. Each of the plurality of vibration structures may further include a first protective member 213 on the first surface of the first electrode layer (E1), and a second protective member 215 on the second surface different from the first surface of the first electrode layer (E1).

[0341] According to an embodiment of the present specification, each of the multiple vibration structures may further include a vibration layer 211, a first protective member 213 on a first surface of the vibration layer 211, and a second protective member 215 on a second surface different from the first surface of the vibration layer 211. Each of the multiple vibration structures may further include a first electrode layer (E1) between the vibration layer 211 and the first protective member 213, and a second electrode layer (E2) between the vibration layer 211 and the second protective member 215. For example, the first protective member 213 and the second protective member 215 of the vibration device may cover the multiple vibration structures in common. For example, the first protective member 213 and the second protective member 215 of the vibration device may be arranged to cover the multiple vibration structures.

[0342] In each of the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibrating device 210-1, the first electrode layer (E1) may be disposed closer to the display panel 100 than the second electrode layer (E2). For example, the first electrode layer (E1) may be a negative electrode, and the second electrode layer (E2) may be a positive electrode. Without being limited thereto, the first electrode layer (E1) may be a positive electrode, and the second electrode layer (E2) may be a negative electrode.

[0343] The first pad member 701 and the second pad member 702 may be made of a material capable of absorbing or adjusting vibration. For example, the first pad member 701 and the second pad member 702 may be made of one of a silicone-based polymer, a paraffin wax, and an acrylic-based polymer, but are not limited thereto. For example, the first pad member 701 and the second pad member 702 may be made of a material different from that of the partition 600, but are not limited thereto.

[0344] The first pad member 701 can reduce heat caused by vibration of the first vibrating device 210-1. The second pad member 702 can reduce heat caused by vibration of the second vibrating device 210-2. Therefore, by configuring the pad members between the multiple vibrating structures, it is possible to improve the reduction in sound pressure at a specific frequency generated between the multiple vibrating structures, and the heat dissipation effect that can reduce heat caused by the vibration of the multiple vibrating structures can be improved. In another embodiment of the present specification, a heat dissipation member can be further disposed between the display panel 100 and the vibrating device. For example, the heat dissipation member can be disposed on the rear surface of the display panel 100.

[0345] 21B, the pad member may be disposed between two or more vibrating structures. For example, the first pad member 801 may be disposed between the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibrating device 201-1. For example, the first pad member 801 may be disposed between the vibration generator 210 and the support member 300. For example, the first pad member 801 may be disposed between the rear surface of the first vibrating device 210-1 and the upper surface of the support member 300.

[0346] The size of the first pad member 801 and the second pad member 802 may be configured to be the same as or different from the size of the area between the multiple vibrating structures. For example, the width of the first pad member 801 and the second pad member 802 with respect to the first direction (X direction) may be the same as or different from the width between the third vibrating structure 210C and the fourth vibrating structure 210D.

[0347] According to an embodiment of the present specification, each of the two or more or a plurality of vibration structures may further include a vibration layer 211, a first electrode layer (E1) disposed on a first surface of the vibration layer 211, and a second electrode layer (E2) disposed on a second surface different from the first surface of the vibration layer 211. For example, the vibration layer 211 may include a first portion 211a and a second portion 211b similar to the vibration layer 211 described in FIG. 4 or similar to the vibration layer 211 described in FIG. 6A to FIG. 6F. For example, as shown in FIG. 11, the second portion 211a2 may be disposed outside the first portion 211a1, but is not limited thereto. Each of the plurality of vibration structures may further include a first protective member 213 on the first surface of the first electrode layer (E1), and a second protective member 215 on a second surface different from the first surface of the first electrode layer (E1).

[0348] According to an embodiment of the present specification, each of the multiple vibration structures may further include a vibration layer 211, a first protective member 213 on a first surface of the vibration layer 211, and a second protective member 215 on a second surface different from the first surface of the vibration layer 211. Each of the multiple vibration structures may further include a first electrode layer (E1) between the vibration layer 211 and the first protective member 213, and a second electrode layer (E2) between the vibration layer 211 and the second protective member 215. For example, the first protective member 213 and the second protective member 215 of the vibration device may cover the multiple vibration structures in common. For example, the first protective member 213 and the second protective member 215 of the vibration device may be arranged to cover the multiple vibration structures.

[0349] One or more of the first pad member 801 and the second pad member 802 may be configured to be the same as the first vibration device 210-1. For example, when one or more of the first pad member 801 and the second pad member are configured to be the same as the first vibration device 210-1, the magnitude of the signal applied to the first pad member 801 and the second pad member 802 can be adjusted, which has the advantage of making it easy to adjust the resonance of the vibration device.

[0350] According to an embodiment of the present specification, the first pad member 801 may include a vibration layer 311, a first electrode layer (E31), and a second electrode layer (E32). For example, the first pad member 801 may include a vibration layer 311, a first electrode layer (E31) disposed on a first surface of the vibration layer 311, and a second electrode layer (E32) disposed on a second surface different from the first surface of the vibration layer 311. For example, the first pad member 801 may include a vibration layer 311, a first protective member 313, and a second protective member 315. For example, the first pad member 801 may include a vibration layer 311, a first protective member 313 disposed on a first surface of the vibration layer 311, and a second protective member 315 disposed on a second surface different from the first surface of the vibration layer 311. For example, the vibration layer 311 may include the first portion 211a and the second portion 211b in the same manner as the vibration portion 211 described in FIG. 5 or in the same manner as the vibration portion 211 described in FIG. 6A to FIG. 6F. The first protective member 313 may be disposed between the vibration layer 311 and the first electrode layer (E31). For example, the first protective member 313 may be disposed under the first electrode layer (E31). For example, the first protective member 313 may protect the first electrode layer (E31). The second protective member 315 may be disposed between the vibration layer 311 and the second electrode layer (E32). For example, the second protective member 315 may be disposed on the second electrode layer (E32). For example, the second protective member 315 may protect the second electrode layer (E32). The first protective member 313 and the second protective member 315 are substantially the same as the first protective members 213, 1213 and the second protective members 215, 1215 described with reference to FIGS. 4, 5, and 8 to 10, and therefore will not be described again.

[0351] According to an embodiment of the present specification, the first electrode layer (E1) of the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibrating device 210-1 may be disposed closer to the display panel 100 than the second electrode layer (E2). For example, the first electrode layer (E1) may be a negative electrode, and the second electrode layer (E2) may be a positive electrode. Without being limited thereto, the first electrode layer (E1) may be a positive electrode, and the second electrode layer (E2) may be a negative electrode. The second electrode layer (E32) of the first pad member 801 may be disposed closer to the display panel 100 than the first electrode layer (E31). For example, the first electrode layer (E31) may be a negative electrode, and the second electrode layer (E32) may be a positive electrode. Without being limited thereto, the first electrode layer (E31) may be a positive electrode, and the second electrode layer (E32) may be a negative electrode. The polarity of the first electrode layer (E1) and the second electrode layer (E2) of the first vibrating device 210-1 may be configured to be opposite to the polarity of the first electrode layer (E31) and the second electrode layer (E32) of the first pad member 801. For example, the polarity of the first electrode layer (E1) of the plurality of vibration structures and the second electrode layer (E32) of the pad member may be different from each other with respect to the display panel 100. For example, with respect to the display panel 100, the first electrode layer (E1) and the second electrode layer (E2) of the first vibrating device 210-1 may be configured as a negative electrode and a positive electrode, and the second electrode layer (E32) and the first electrode layer (E31) of the first pad member 801 may be configured as a positive electrode and a negative electrode. In another embodiment of the present specification, the first electrode layer (E1) and the second electrode layer (E2) of the first vibrating device 210-1 may be configured as a positive electrode and a negative electrode, and the second electrode layer (E32) and the first electrode layer (E31) of the first pad member 801 may be configured as a negative electrode and a positive electrode, based on the display panel 100. As a result, the electrode layer of the first pad member 801 is arranged as an electrode layer having a polarity opposite to that of the first vibrating device 210-1, so that the dip phenomenon caused by the resonance between the multiple vibrating structures can be reduced and the dip phenomenon can be offset by the counter vibration caused by the first pad member 801. Therefore, by configuring the pad member between the multiple vibrating structures, the reduction in sound pressure at a specific frequency occurring between the multiple vibrating structures can be improved.

[0352] Fig. 22A is another cross-sectional view taken along line VV' in Fig. 20. Fig. 22B is another cross-sectional view taken along line VV' in Fig. 20.

[0353] Figures 22A and 22B show pad members configured on a plurality of vibration generators 210, 230 of the vibration device 200 of Figures 8 to 11, 15, and 16. Therefore, redundant explanations of the vibration device will be omitted or simplified.

[0354] 20, 22A, and 22B, a vibration device 200 according to another embodiment of the present disclosure may include multiple vibration generators 210, 230. The multiple vibration generators 210, 230 may include multiple vibrating structures.

[0355] According to an embodiment of the present specification, each of the plurality of vibration structures may include a vibration part 221. The vibration part 221 may include a vibration layer 221a, a first electrode layer 221b disposed on a first surface of the vibration layer 221a, and a second electrode layer 221c disposed on a second surface different from the first surface of the vibration layer 221a. Each of the plurality of vibration structures may further include a first protective member 1213 on the first surface of the first electrode layer 221b, and a second protective member 1215 on a second surface different from the first surface of the first electrode layer 221b.

[0356] According to an embodiment of the present specification, each of the multiple vibration structures may further include a vibration layer 221a, a first protective member 1213 on a first surface of the vibration layer 221a, and a second protective member 1215 on a second surface different from the first surface of the vibration layer 221a. Each of the multiple vibration structures may further include a first electrode layer 221b between the vibration layer 221a and the first protective member 1213, and a second electrode layer 221c between the vibration layer 221a and the second protective member 1215. For example, the first protective member 1213 and the second protective member 1215 of the vibration device may cover the multiple vibration structures in common. For example, the first protective member 1213 and the second protective member 1215 of the vibration device may be arranged to cover the multiple vibration structures.

[0357] The first pad member 701 may be disposed on the multiple vibration generators 210, 230 of the vibration device 200. For example, the first pad member 701 may be disposed on the rear surface of the multiple vibration generators 210, 230 of the vibration device 200. For example, the first pad member 701 may be disposed below the second vibration generator 230 of the multiple vibration generators 210, 230. For example, the first pad member 701 may be disposed between the vibration device 200 and the support member 300. For example, the first pad member 701 may be disposed between the multiple vibration generators 210, 230 and the support member 300. For example, the first pad member 701 may be disposed between the rear surface of the multiple vibration generators 210, 230 and the upper surface of the support member 300. For example, the first pad member 701 may be disposed between the rear surface of the second vibration generator 230 of the multiple vibration generators 210, 230 and the upper surface of the support member 300. For example, the tip (or one side or a portion) of the first pad member 701 may be arranged to correspond to the first portion 221a1. The tip (or one side or a portion) of the first pad member 701 may overlap the first portion 221a1 without overlapping the second portion 221a2. For example, the tip (or one side or a portion) of the first pad member 701 may be located or aligned at the boundary between the second portion 221a2 and the first portion 221a1. For example, the first pad member 701 may be configured to correspond to both sides of the multiple first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230.

[0358] The second pad member 702 may be disposed on the plurality of vibration generators 210, 230 of the vibration device 200. The second pad member 702 may be disposed below the second vibration generator 230 of the plurality of vibration generators 210, 230. For example, the second pad member 702 may be disposed between the vibration device 200 and the support member 300. For example, the second pad member 702 may be disposed between the plurality of vibration generators 210, 230 and the support member 300. For example, the second pad member 702 may be disposed between the rear surface of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the second pad member 702 may be disposed between the rear surface of the second vibration generator 230 of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the second pad member 702 may be disposed between the rear surface of the second vibration generator 230 of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the tip (or one side or a portion) of the second pad member 702 may be disposed to correspond to the first portion 221a1. The tip (or one side or a portion) of the second pad member 702 may overlap the first portion 221a1 without overlapping the second portion 221a2. For example, the tip (or one side or a portion) of the second pad member 702 may be located or aligned at the boundary between the second portion 221a2 and the first portion 221a1. For example, the tip (or one side or a portion) of the second pad member 702 may be configured to correspond to both sides of the plurality of first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230. The first pad member 701 and the second pad member 702 may be, but are not limited to, a resonance control pad, an external resonance pad, a gap pad, or a resonance control portion.

[0359] As another embodiment of the present specification, the first pad member 701 and the second pad member 702 may be configured as one pad member. For example, the pad member may be configured as one on the back surface of the second vibration generator 230. For example, the pad member may be disposed on the back surface of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230. For example, the pad member may be disposed on the back surface of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230, including between the third vibration structure 210C and the fourth vibration structure 210D. For example, the pad member may be disposed on the entire back surface of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230.

[0360] The size of the first pad member 701 and the second pad member 702 may be configured to be the same as or different from the size of the multiple vibration structures of the multiple vibration generators 210, 230.

[0361] The first electrode layer 221b of the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibration generator 210 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative electrode. For example, the second electrode layer 221c may be a positive electrode. The first electrode layer 221b of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative electrode. For example, the second electrode layer 221c may be a positive electrode. For example, one or more of the first electrode layers 221b of the third vibration structure 210C and the fourth vibration structure 210D of the first vibration generator 210 and the first electrode layers 221b of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230 may be positioned closer to the display panel 100 than the second electrode layer 221c.

[0362] According to an embodiment of the present specification, the first pad member 701 and the second pad member 702 may be made of one of a silicone-based polymer, a paraffin wax, and an acrylic-based polymer, but are not limited thereto. For example, the first pad member 701 and the second pad member 702 may be made of a material different from that of the partition 600, but are not limited thereto.

[0363] The first pad member 701 can reduce heat caused by vibration of the third vibration structure 210C of the first vibration generator 210 and the third vibration structure 210C of the second vibration generator 230. The second pad member 702 can reduce heat caused by vibration of the fourth vibration structure 210D of the first vibration generator 210 and the fourth vibration structure 210D of the second vibration generator 230. Therefore, by configuring a pad member on the vibration device, it is possible to improve the reduction in sound pressure at a specific frequency generated in the multiple vibration structures, and the heat dissipation effect that can reduce heat caused by the vibration of the multiple vibration structures can be improved. According to another embodiment of the present specification, a heat dissipation member may be further disposed between the display panel 100 and the vibration device. For example, the heat dissipation member may be disposed on the rear surface of the display panel 100.

[0364] 20 and 22B, a vibration device 200 according to another embodiment of the present disclosure may include multiple vibration generators 210, 230. The multiple vibration generators 210, 230 may include multiple vibrating structures.

[0365] According to an embodiment of the present specification, each of the plurality of vibration structures may include a vibration part 221. The vibration part 221 may include a vibration layer 221a, a first electrode layer 221b disposed on a first surface of the vibration layer 221a, and a second electrode layer 221c disposed on a second surface different from the first surface of the vibration layer 221a. Each of the plurality of vibration structures may further include a first protective member 1213 on the first surface of the first electrode layer 221b, and a second protective member 1215 on a second surface different from the first surface of the first electrode layer 221b.

[0366] According to an embodiment of the present specification, each of the multiple vibration structures may include a vibration layer 221a, a first protective member 1213 on a first surface of the vibration layer 221a, and a second protective member 1215 on a second surface different from the first surface of the vibration layer 221a. Each of the multiple vibration structures may further include a first electrode layer 221b between the vibration layer 221a and the first protective member 1213, and a second electrode layer 221c between the vibration layer 221a and the second protective member 1215. For example, the first protective member 1213 and the second protective member 1215 of the vibration device may cover the multiple vibration structures in common. For example, the first protective member 1213 and the second protective member 1215 of the vibration device may be arranged to cover the multiple vibration structures.

[0367] One or more of the first pad member 801 and the second pad member 802 may be configured the same as the vibration device 200. For example, the first pad member 801 and the second pad member 802 may include a vibration layer 311, a first electrode layer (E31), and a second electrode layer (E32). For example, the first pad member 801 and the second pad member 802 may include a vibration layer 311, a first electrode layer (E31) disposed on a first surface of the vibration layer 311, and a second electrode layer (E32) disposed on a second surface different from the first surface of the vibration layer 311. For example, the first pad member 801 and the second pad member 802 may include a vibration layer 311, a first protective member 313, and a second protective member 315. For example, the first pad member 801 and the second pad member 802 may further include a vibration layer 311, a first protective member 313 disposed on a first surface of the vibration layer 311, and a second protective member 315 disposed on a second surface different from the first surface of the vibration layer 311. For example, the vibration layer 311 may include a first portion 211a and a second portion 211b similar to the vibration section 211 described in FIG. 5 or similar to the vibration section 211 described in FIG. 6A to FIG. 6F. For example, the vibration layers 311 of the first pad member 801 and the second pad member 802 may be arranged in the same manner as the vibration layers 221a of each of the multiple vibration structures. For example, the arrangement of the first and second portions of the vibration layers 311 of the first pad member 801 and the second pad member 802 may be the same as the arrangement of the first and second portions of the vibration layers 221a of each of the multiple vibration structures. Without being limited thereto, the arrangement of the first and second parts of the vibration layer 311 of the first pad member 801 and the second pad member 802 and the arrangement of the first and second parts of the vibration layer 221a of each of the multiple vibration structures may be configured differently.

[0368] The first protective member 313 may be disposed between the vibration layer 311 and the first electrode layer (E31). For example, the first protective member 313 may be disposed under the first electrode layer (E31). For example, the first protective member 313 may protect the first electrode layer (E31). The second protective member 315 may be disposed between the vibration layer 311 and the second electrode layer (E32). For example, the second protective member 315 may be disposed on the second electrode layer (E32). For example, the second protective member 315 may protect the second electrode layer (E32). The first protective member 313 and the second protective member 315 are substantially the same as the first protective members 213, 1213 and the second protective members 215, 1215 described in FIG. 5, FIG. 6A to FIG. 6F, and FIG. 8 to FIG. 10, and therefore, a duplicated description thereof will be omitted.

[0369] The first pad member 801 may be disposed on the plurality of vibration generators 210, 230 of the vibration device 200. For example, the first pad member 801 may be disposed below the second vibration generator 230 of the plurality of vibration generators 210, 230. For example, the first pad member 801 may be disposed between the vibration device 200 and the support member 300. For example, the first pad member 801 may be disposed between the plurality of vibration generators 210, 230 and the support member 300. For example, the first pad member 801 may be disposed between the rear surface of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the first pad member 801 may be disposed between the rear surface of the second vibration generator 230 of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the first pad member 801 may be disposed between the rear surface of the second vibration generator 230 of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the tip (or one side or a portion) of the first pad member 801 may be disposed to correspond to the first portion 221a1. The tip (or one side or a portion) of the first pad member 801 may overlap the first portion 221a1 without overlapping the second portion 221a2. For example, the tip (or one side or a portion) of the first pad member 801 may be located or aligned at the boundary between the second portion 221a2 and the first portion 221a1. For example, the first pad member 801 may be configured to correspond to both sides of the multiple first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230.

[0370] The second pad member 802 may be disposed on the plurality of vibration generators 210, 230 of the vibration device 200. The second pad member 802 may be disposed below the second vibration generator 230 of the plurality of vibration generators 210, 230. For example, the second pad member 802 may be disposed between the vibration device 200 and the support member 300. For example, the second pad member 802 may be disposed between the rear surface of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the second pad member 802 may be disposed between the rear surface of the second vibration generator 230 of the plurality of vibration generators 210, 230 and the upper surface of the support member 300. For example, the tip (or one side or a portion) of the second pad member 802 may be disposed to correspond to the first portion 221a1. The tip (or one side or a portion) of the second pad member 802 may not overlap the second portion 221a2 but may overlap the first portion 221a1. For example, the tip (or one side or a portion) of the second pad member 802 may be located or aligned at the boundary between the second portion 221a2 and the first portion 221a1. For example, the second pad member 802 may be configured to correspond to both sides of the plurality of first portions 221a1 of the first vibration generator 210 and / or the second vibration generator 230. The first pad member 801 and the second pad member 802 may be, but are not limited to, a resonance control pad, an external resonance pad, a gap pad, or a resonance control portion.

[0371] As another embodiment of the present specification, the first pad member 801 and the second pad member 802 may be configured as one pad member. For example, the pad member may be configured as one on the back surface of the second vibration generator 230. For example, the pad member may be disposed on the back surface of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230. For example, the pad member may be disposed on the back surface of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230, including between the third vibration structure 210C and the fourth vibration structure 210D. For example, the pad member may be disposed on the entire back surface of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230.

[0372] The size of one or more of the first pad member 801 and the second pad member 802 may be configured to be the same as or different from the size of the plurality of vibrating structures.

[0373] One or more of the first pad member 801 and the second pad member 802 may be configured to be the same as the vibration generators 210, 230. For example, one or more of the first pad member 801 and the second pad member 802 may be configured to be the same as the multiple vibration structures 210A, 210B, 210C, 210D of the multiple vibration generators 210, 230. For example, when one or more of the first pad member 801 and the second pad member 802 are configured to be the same as the vibration generators 210, 230, there is an advantage in that the magnitude of the signal applied to the first pad member 801 and the second pad member 802 can be adjusted, so that the resonance of the vibration device can be easily adjusted.

[0374] According to an embodiment of the present specification, the first pad member 801 may include a vibration layer 311, a first electrode layer (E31), and a second electrode layer (E32). For example, the vibration layer 311 may include a first portion 211a and a second portion 211b, similar to the vibration section 211 described in FIG. 5, or similar to the vibration section 211 described in FIGS. 6A to 6F. As another embodiment of the present specification, the vibration layer 311 may include a first portion 221a1 and a second portion 221a2, similar to the vibration layer 221a described in FIGS. 8 to 11.

[0375] The first protective member 313 may be disposed under the first electrode layer (E31). For example, the first protective member 313 may protect the first electrode layer (E31). The second protective member 315 may be disposed on the second electrode layer (E32). For example, the second protective member 315 may protect the second electrode layer (E32). The first protective member 313 and the second protective member 315 are substantially the same as the first protective members 213, 1213 and the second protective members 215, 1215 described in FIG. 5, FIG. 6A to FIG. 6F, and FIG. 8 to FIG. 10, and therefore a duplicated description thereof will be omitted.

[0376] The first electrode layer 221b of the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibration generator 210 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative electrode. For example, the second electrode layer 221c may be a positive electrode. The first electrode layer 221b of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230 may be disposed closer to the display panel 100 than the second electrode layer 221c. For example, the first electrode layer 221b may be a negative electrode. For example, the second electrode layer 221c may be a positive electrode. For example, one or more of the first electrode layers 221b of the third vibration structure 210C and the fourth vibration structure 210D of the first vibration generator 210 and the first electrode layers 221b of the third vibration structure 210C and the fourth vibration structure 210D of the second vibration generator 230 may be positioned closer to the display panel 100 than the second electrode layer 221c.

[0377] The second electrode layer (E32) of the first pad member 801 may be disposed closer to the display panel 100 than the first electrode layer (E31). For example, the first electrode layer (E31) may be a negative electrode. For example, the second electrode layer (E32) may be a positive electrode. The polarities of the first electrode layer 221b and the second electrode layer 221c of the first vibration generator 210 may be configured to be opposite to the polarities of the first electrode layer (E31) and the second electrode layer (E32) of the first pad member 801. For example, the polarities of the first electrode layer (E1) of the multiple vibration structures and the second electrode layer (E32) of the first pad member 801 may be different from each other with respect to the display panel 100. For example, with respect to the display panel 100, the first electrode layer 221b and the second electrode layer 221c of the first vibration generator 210 may be configured as a negative electrode and a positive electrode, and the second electrode layer (E32) and the first electrode layer (E31) of the first pad member 801 may be configured as a positive electrode and a negative electrode. The second electrode layer (E32) of the second pad member 802 may be disposed closer to the display panel 100 than the first electrode layer (E31). For example, the first electrode layer (E31) may be a negative electrode. For example, the second electrode layer (E32) may be a positive electrode. The polarities of the first electrode layer 221b and the second electrode layer 221c of the second vibration generator 230 may be configured to be opposite to the polarities of the first electrode layer (E31) and the second electrode layer (E32) of the second pad member 802. For example, the first electrode layer 221b and the second electrode layer 221c of the second vibration generator 230 may be configured as a negative electrode and a positive electrode, and the second electrode layer (E32) and the first electrode layer (E31) of the second pad member 802 may be configured as a positive electrode and a negative electrode, based on the display panel 100. As a result, the electrode layer of the first pad member 801 and / or the electrode layer of the second pad member 802 may be arranged as an electrode layer having a polarity opposite to that of the first vibration generator 210 and / or the second vibration generator 230, so that the dip phenomenon caused by the resonance between the multiple vibration structures can be reduced and the dip phenomenon can be offset by the counter vibration caused by the first pad member 801 and / or the second pad member 802. Therefore, by configuring the pad member in the vibration device, the reduction in sound pressure at a specific frequency generated by the multiple vibration structures can be improved.

[0378] As another embodiment of the present specification, the pad member may be applied to the device shown in FIG. 3 and FIG. 7. Referring to FIG. 3 and FIG. 7, the pad member may be disposed between the vibration device 200 and the support member 300. For example, the size of the first member 510 may be the same as or larger than the size of the pad members 701, 801. When the size of the first member 510 is configured to be larger than the size of the pad members 701, 801, the pad members 701, 801 can output sound to the front of the device, so that the acoustic characteristics and / or sound pressure characteristics may be further improved. For example, the pad members 701, 801 can transmit the vibration of the first member 510, which is a diaphragm, to the front of the device. For example, the pad members 701, 801 may be, but are not limited to, an acoustic transmitter, an acoustic transmission member, or a vibration transmission member. For example, the pad member may be disposed between the rear surface of the vibration device 200 and the first member 510. For example, the pad member may be disposed between the back surface of the vibration device 200 and the first member 510 and the second member 550. The pad member may overlap the support member 300. For example, the pad member may overlap the second support member 330. For example, the pad member may overlap the first member 510. For example, the pad member may overlap the first member 510 and the second support member 330. For example, the pad member may overlap one or more of the first member 510 and the second member 550. For example, the pad member may overlap the first member 510, the second member 550, and the second support member 330. If the pad member does not interfere with the second member 550, the pad member may overlap the second member 550. For example, the second member 550 may be disposed similarly to one side (or end) of the vibration device 200, or may be configured to be smaller than one side (or end) of the vibration device 200. The pad member may be a transmission member or a vibration transmission member that transmits the sound or vibration of the vibration device 200 to the front surface of the device. By providing a pad member between the vibration device 200 and the support member 300, the sound or vibration of the vibration device 200 can be transmitted to the front surface of the device, so that a device with improved acoustic characteristics and / or sound pressure characteristics can be provided.

[0379] 23A-23C are diagrams showing an apparatus according to another embodiment of the present specification.

[0380] 23A-23C, a device according to another embodiment of the present disclosure may include a vibration device 200, a support member 300, and pad members 701, 702, 801, 802.

[0381] Referring to FIG. 23A, as described in FIG. 20, FIG. 21A, and FIG. 21B, the vibration device can include a first vibration device 210-1 and a second vibration device 210-2. The description of FIG. 23A can be applied to the pad member 801 of FIG. 21B as well. For example, the description of FIG. 23A and FIG. 23B can be applied to the vibration device of FIG. 22A and FIG. 22B as well. For example, the pad member can be applied to the device of FIG. 3, FIG. 5, FIG. 6A to FIG. 6F, FIG. 13, FIG. 14, and FIG. 17. For example, the pad member can be realized together with the first member 510 and the second member 550.

[0382] The first pad member 701 may be disposed between the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibrating device 210-1. For example, the first pad member 701 may be disposed between the vibrating device and the support member 300. For example, the first pad member 701 may be disposed between the vibrating device and the second support member 330. For example, the first pad member 701 may overlap the support member 300. For example, the first pad member 701 may overlap the second support member 330.

[0383] The support member 300 may include a first member 510 and a second member 550. For example, the first member 510 and the second member 550 may not be disposed in an area where the vibration device 200 is not disposed. For example, the first member 510 and the second member 550 may overlap with each of the first vibration device 210-1 and the second vibration device 210-2. For example, the first member 510 may overlap with the center of the first vibration device 210-1 and the center of the second vibration device 210-2. The support member 300 may be disposed between the first vibration device 210-1 and the second vibration device 210-2. For example, the second support member 330 may be disposed between the first vibration device 210-1 and the second vibration device 210-2. The first member 510 and the second member 550 may be disposed on the same plane as the support member 300. For example, the first member 510 and the second member 550 may be disposed on the same plane as the second support member 330. The second member 550 may be coupled to the support member 300. For example, the second member 550 may be coupled to the second support member 300. For example, the first member 510 may be coupled to the second member 550. For example, the first member 510 may be disposed between the second member 550. The first member 510 may be vibrated by the vibration of the vibration device 200. Thereby, the vibration device 200 may generate sound or vibration (or a first sound or a first vibration) (S1) on the front side of the device, and the first member 510 and / or the second member 550 may generate sound or vibration (or a second sound or a second vibration) (S2) on the back side of the support member 300.

[0384] Referring to Fig. 23B, as described in Fig. 20, Fig. 22A, and Fig. 22B, the vibration device 200 can include a plurality of vibration generators 210, 230. The plurality of vibration generators 210, 230 can include a plurality of vibration structures. The description of Fig. 23B can be applied to the pad members 801, 802 of Fig. 22B as well. For example, the pad members can be applied to the devices of Figs. 7 to 11, 15, and 16. For example, the pad members can be realized together with the first member 510 and the second member 550.

[0385] The first pad member 701 may be disposed on the multiple vibration generators 210, 230 of the vibration device 200. For example, the first pad member 701 may be disposed between the vibration device and the support member 300. For example, the first pad member 701 may be disposed between the rear surface of the second vibration generator 230 of the multiple vibration generators 210, 230 and the upper surface of the support member 300.

[0386] The second pad member 702 may be disposed on the multiple vibration generators 210, 230 of the vibration device 200. For example, the second pad member 702 may be disposed between the vibration device and the support member 300. For example, the second pad member 702 may be disposed between the rear surface of the second vibration generator 230 of the multiple vibration generators 210, 230 and the upper surface of the support member 300.

[0387] The support member 300 may include a first member 510 and a second member 550. For example, the first member 510 and the second member 550 may not be disposed in an area where the vibration device 200 is not disposed. For example, the size of the first member 510 may be the same as or larger than the size of the pad members 701 and 702. When the size of the first member 510 is configured to be larger than the size of the pad members 701 and 702, the pad members 701 and 702 can output sound to the front of the device, so that the acoustic characteristics and / or sound pressure characteristics may be further improved. For example, the pad members 701 and 702 can transmit the vibration of the first member 510, which is a diaphragm, to the front of the device. For example, the pad members 701 and 702 may be, but are not limited to, an acoustic transmitter, an acoustic transmission member, or a vibration transmission member. For example, the pad members 701 and 702 may be disposed between the rear surface of the vibration device 200 and the first member 510. For example, the pad members 701, 702 may be disposed between the rear surface of the vibration device 200 and the first member 510 and the second member 550. For example, the pad members 701, 702 may overlap the first member 510. For example, the pad members 701, 702 may overlap one or more of the first member 510 and the second member 550. If the pad members 701, 702 do not interfere with the second member 550, the pad members 701, 702 may overlap the second member 550. For example, the second member 550 may be disposed similarly to one side (or end) of the vibration device 200, or may be configured smaller than one side (or end) of the vibration device 200. For example, the second member 550 may be disposed similarly to one side (or end) of the second vibration generator 210-2, or may be configured smaller than one side (or end) of the second vibration generator 210-2.

[0388] According to an embodiment of the present specification, the first member 510 and the second member 550 may be overlapped with the second vibration generator 230. For example, the first member 510 may be overlapped with the center of each of the vibrating structures 210C, 210D included in the second vibration generator 230. The support member 300 may be disposed between the vibrating structures 210C, 210D. For example, the second support member 330 may be disposed between the vibrating structures 210C, 210D. The first member 510 and the second member 550 may be disposed on the same plane as the support member 300. For example, the first member 510 and the second member 550 may be disposed on the same plane as the second support member 330. For example, the second member 550 may be connected to the support member 300. For example, the second member 550 may be connected to the second support member 300. For example, the first member 510 may be connected to the second member 550. For example, the first member 510 may be disposed between the second member 550. The first member 510 may be vibrated by the vibration of the multiple vibration generators 210, 230. Thereby, the multiple vibration generators 210, 230 may generate sound or vibration (or a first sound or a first vibration) (S1) on the front side of the device, and the first member 510 and / or the second member 550 may generate sound or vibration (or a second sound or a second vibration) (S2) on the rear side of the support member 300.

[0389] Referring to FIG. 23C, the pad members 701, 801 may be disposed between the vibration device 200 and the support member 300. For example, the pad members 701, 801 may be disposed between the vibration device 200 and the second support member 330. For example, the pad members 701, 801 may be disposed between the rear surface of the vibration device 200 and the second support member 330. For example, the pad members 701, 801 may be disposed between the rear surface of the second vibration generator 230 and the second support member 330. For example, the pad members 701, 801 may overlap the support member 300. For example, the pad members 701, 801 may overlap the second support member 330. The pad members 701, 801 may be a transmission member or a vibration transmission member that transmits the sound or vibration of the vibration device 200 to the front surface of the device. The size of the first member 510 may be the same as or larger than the size of the pad members 701, 801. When the size of the first member 510 is configured to be larger than the size of the pad members 701 and 801, the pad members 701 and 801 can output sound to the front of the device, so that the sound characteristics and / or sound pressure characteristics can be further improved. For example, the pad members 701 and 801 can transmit the vibration of the first member 510, which is a diaphragm, to the front of the device. For example, the pad members 701 and 801 can be, but are not limited to, a sound transmitter, a sound transmitting member, or a vibration transmitting member. By configuring the pad members 701 and 801 between the vibration device 200 and the support member 300, the sound or vibration of the vibration device 200 can be transmitted to the front of the device, so that a device with improved sound characteristics and / or sound pressure characteristics can be provided. The description of FIG. 23C can also be applied to FIGS. 3 to 5, 7 to 11, 13 to 17, and 22B.

[0390] 24A and 24B show an apparatus according to another embodiment of the present disclosure.

[0391] 24A and 24B, in a device according to another embodiment of the present specification, the vibration device may include a first vibration device 210-1, a second vibration device 210-2, a third vibration device 210-3, and a fourth vibration device 210-4 disposed on the rear surface of the display panel 100. Although FIGS. 24A and 24B are described using the device of FIGS. 14 and 15 as an example, the present invention is not limited thereto. For example, the description of FIGS. 24A and 24B may also be applied to FIGS. 3 to 5, 8 to 13, and 16 to 18. The description of FIGS. 24A and 24B may also be applied to FIGS. 21A and 21B.

[0392] 24A, the first vibrating device 210-1 and the third vibrating device 210-3 may be disposed in a first region (A1) of the display panel 100. For example, the first vibrating device 210-1 and the third vibrating device 210-3 may be disposed across from each other or diagonally in the first region (A1) of the display panel 100. This may increase the vibration area for the first region (A1) of the display panel 100. For example, the diagonal direction may be a direction between the first direction (X) and the second direction (Y).

[0393] The first vibrating device 210-1 and the third vibrating device 210-3 may be surrounded by a partition 600. For example, the first vibrating device 210-1 and the third vibrating device 210-3 may be surrounded by a fourth partition member 640 (or a first enclosure).

[0394] Each of the first vibrating device 210-1 and the third vibrating device 210-3 can vibrate the first region (A1) of the display panel 100 to generate a second vibration sound (or a left side sound) or generate a second haptic feedback in the first region (A1) of the display panel 100. For example, the vibration area of ​​the first region (A1) of the display panel 100 is increased by the parallel arrangement structure of the first vibrating device 210-1 and the third vibrating device 210-3, and thus the acoustic characteristics including the low frequency band of the left side sound can be improved. For example, by further arranging the third vibrating device 210-3 in the first region (A1) of the display panel 100 in addition to the first vibrating device 210-1, the second vibration sound or the second haptic feedback according to other embodiments of the present specification can be improved more than the second vibration sound or the second haptic feedback described in FIG. 19.

[0395] According to an embodiment of the present specification, the first vibrating device 210-1 may be arranged to be biased toward an edge portion in the first region (A1) of the display panel 100. For example, the first vibrating device 210-1 may be arranged in an upper left region adjacent to an edge portion of the display panel 100 in the first region (A1) of the display panel 100. The third vibrating device 210-3 may be arranged to be biased toward a center line (CL) of the display panel 100 in the first region (A1) of the display panel 100. For example, the third vibrating device 210-3 may be arranged in a lower right region adjacent to the center line (CL) of the display panel 100 in the first region (A1) of the display panel 100. The third vibrating device 210-3 may be arranged to cross the first vibrating device 210-1 in the first region (A1) of the display panel 100, so that it may not overlap with the first vibrating device 210-1 in the first direction (X) and the second direction (Y). According to an embodiment of the present specification, the diagonal arrangement structure of the first vibrating device 210-1 and the third vibrating device 210-3 has the effect of arranging the two vibrating devices 210-1, 210-3 in a 2×2 structure in the first area (A1) of the display panel 100, so that the number of vibrating devices vibrating the first area (A1) of the display panel 100 can be reduced by half.

[0396] Each of the second vibrating device 210-2 and the fourth vibrating device 210-4 may be disposed in the second region (A2) of the display panel 100. For example, each of the second vibrating device 210-2 and the fourth vibrating device 210-4 may be disposed across from each other or diagonally in the second region (A2) of the display panel 100. This can increase the vibration area for the second region (A2) of the display panel 100. For example, the diagonal direction may be a direction between the first direction (X) and the second direction (Y).

[0397] The second vibrating device 210-2 and the fourth vibrating device 210-4 may be surrounded by a partition 600. For example, the second vibrating device 210-2 and the fourth vibrating device 210-4 may be surrounded by a fifth partition member 650 (or a second enclosure).

[0398] Each of the second vibrating device 210-2 and the fourth vibrating device 210-4 vibrates the second region (A2) of the display panel 100, thereby generating a first vibration sound (or a right side sound) or generating a first haptic feedback in the second region (A2) of the display panel 100. For example, the vibration area of ​​the second region (A2) of the display panel 100 is increased by the diagonal arrangement structure of the second vibrating device 210-2 and the fourth vibrating device 210-4, and thus the acoustic characteristics including the low frequency band of the right side sound can be improved. For example, by further arranging the fourth vibrating device 210-4 in the second region (A2) of the display panel 100 in addition to the second vibrating device 210-2, the first vibration sound or the first haptic feedback according to other embodiments of the present specification can be further improved compared to the first vibration sound or the first haptic feedback described in FIG. 19.

[0399] According to an embodiment of the present specification, the second vibrating device 210-2 may be arranged in the second region (A2) of the display panel 100 so as to be biased toward an edge portion. For example, the second vibrating device 210-2 may be arranged in the second region (A2) of the display panel 100 in an upper right region adjacent to an edge portion of the display panel 100. The first vibrating device 210-1 and the second vibrating device 210-2 may be symmetrical with respect to the center line (CL) of the display panel 100. The fourth vibrating device 210-4 may be arranged in the second region (A2) of the display panel 100 so as to be biased toward the center line (CL) of the display panel 100. For example, the fourth vibrating device 210-4 may be arranged in the second region (A2) of the display panel 100 in a lower left region adjacent to the center line (CL) of the display panel 100. The fourth vibrating device 210-4 may not overlap with the second vibrating device 210-2 in the first direction (X) and the second direction (Y) by being disposed across from the second vibrating device 210-2 in the second region (A2) of the display panel 100. According to the embodiment of the present specification, the diagonal arrangement structure of the second vibrating device 210-2 and the fourth vibrating device 210-4 has the effect of arranging...

Claims

1. A display panel for displaying an image; a vibration device disposed in contact with a rear surface of the display panel and configured to vibrate the display panel to generate a first sound in a direction toward a display surface of the display panel; A support member disposed on a rear side of the display panel; a first member and a second member configured within the support member; Including, the first member and the second member are arranged parallel to each other on the same plane separated from the rear surface of the vibration device via a gap space, the first member vibrates due to vibration transmitted from the vibration device through the gap space, thereby generating a second sound having a lower frequency than the first sound in a direction opposite to the display surface; Device.

2. The device according to claim 1 , wherein in a plan view from a direction perpendicular to a rear surface of the display panel, one or more of the first member and the second member overlap with the vibration device.

3. The apparatus of claim 1 , wherein the first member is disposed between the second members.

4. The first member is connected to the second member, The apparatus of claim 1 , wherein the second member is coupled to the support member.

5. The apparatus of claim 1 , wherein the vibration device comprises two or more vibrating structures.

6. 6. The apparatus of claim 5, wherein each of the two or more vibrating structures includes a plurality of first portions having an inorganic material and a plurality of second portions having an organic material disposed between the plurality of first portions.

7. The device according to claim 6 , wherein an arrangement direction of the plurality of first portions and the plurality of second portions is the same as a horizontal direction of the display panel, or the same as a vertical direction of the display panel, or a combination thereof.

8. the plurality of first portions have piezoelectric properties; The apparatus of claim 6 , wherein the plurality of second portions have soft properties.

9. Each of the two or more vibrating structures comprises: A vibration layer; A first protective member disposed on a first surface of the vibration layer; The device of claim 5 , further comprising a second protective member disposed on a second surface of the vibration layer that is different from the first surface.

10. Each of the two or more vibrating structures comprises: a first electrode layer between the vibration layer and the first protection member; The apparatus of claim 9 , further comprising a second electrode layer between the vibration layer and the second protective member.

11. The apparatus of claim 5 , further comprising a padding member disposed between the two or more vibrating structures.

12. The pad member is A vibration layer; A first electrode layer disposed on a first surface of the vibration layer; and a second electrode layer disposed on a second surface of the vibration layer that is distinct from the first surface.

13. The device according to claim 11 , wherein the pad member overlaps the support member in a plan view from a direction perpendicular to the rear surface of the display panel.

14. The vibration device further includes a pad member disposed on a rear surface thereof, The device according to claim 1 , wherein the pad member overlaps one or more of the first member and the second member in a plan view perpendicular to a rear surface of the display panel.

15. the display panel includes a first region and a second region; the vibration device includes a first vibration device that vibrates the first region and a second vibration device that vibrates the second region, The device according to claim 1 , wherein the first member and the second member overlap with the first vibrating device and the second vibrating device, respectively, in a plan view from a direction perpendicular to a rear surface of the display panel.

16. The apparatus of claim 15 , wherein the first member is disposed between the second members.

17. A vibrating member; a vibration device disposed in contact with the vibration member and configured to vibrate the vibration member to generate a first sound in a direction toward a front surface of the vibration member; A support member disposed on a rear side of the vibration member; a first member and a second member configured within the support member; Including, the first member and the second member are arranged parallel to each other on the same plane separated from the rear surface of the vibration device via a gap space, the first member is vibrated by the vibration transmitted from the vibration device through the gap space to generate a second sound having a lower frequency than the first sound in a direction opposite to the front surface; The vibration member includes a display panel having a plurality of pixels for displaying an image, or one or more non-display panels selected from a light-emitting diode lighting panel, an organic light-emitting lighting panel, and an inorganic light-emitting lighting panel, or one or more of a vehicle interior material, a vehicle glass window, a building ceiling, a building interior material, a building glass window, an aircraft interior material, and an aircraft glass window. Device.

18. The apparatus of claim 17 , wherein the first member is disposed between the second members.

19. The apparatus of any one of claims 1 to 4, 17 and 18, wherein the vibration device comprises a plurality of vibration generators.

20. 20. The apparatus of claim 19, wherein each of the plurality of vibration generators includes a plurality of vibrating structures.

21. 20. The apparatus of claim 19, wherein each of the plurality of vibration generators are stacked for displacement in the same direction.

22. 20. The apparatus of claim 19, further comprising a padding member disposed on a rear surface of each of the plurality of vibration generators.

23. The apparatus of any one of claims 1 to 4, 17 and 18, further comprising a padding member between the vibration device and the support member.

24. 24. The device of claim 23, wherein the padding member is configured similarly to the vibration device.

25. The device of claim 23 , wherein the pad member overlaps the first member in a plan view perpendicular to a rear surface of the support member.

26. The apparatus of any one of claims 1 to 4, 17 and 18, further comprising a padding member between the vibration device and the first member.

27. The support member includes a first region corresponding to a center of the vibration device, a second region corresponding to an edge portion of the vibration device, and a third region between the first region and the second region, the first member is disposed in the first region of the support member, The second member is disposed in the third region of the support member. Apparatus according to any one of claims 1 to 17.

28. 28. The apparatus of claim 27, wherein the first member is disposed between the second members.

29. 28. The apparatus of claim 27, wherein the second member is coupled to the support member.

30. The apparatus according to any one of claims 1 to 18, wherein the first member is vibrated by vibration of the vibration device.

31. 31. The device of claim 30, wherein the second member surrounds the first member and has flexible properties.

32. The apparatus according to any one of claims 1 to 18, wherein the second member is made of a different material than the support member.

33. A vibrating member; A support member disposed on a rear side of the vibration member; a vibration device disposed between the vibration member and the support member, the vibration device vibrating the vibration member to generate a first sound in a direction of a front surface of the vibration member; a first member and a second member disposed within the support member and spaced apart from a rear surface of the vibration device; Including, the first member and the second member are arranged parallel to each other on the same plane separated from the rear surface of the vibration device via a gap space, the first member is vibrated by the vibration transmitted from the vibration device through the gap space to generate a second sound having a lower frequency than the first sound in a direction opposite to the front surface; The vibration member includes a display panel having a plurality of pixels for displaying an image, or one or more non-display panels selected from a light-emitting diode lighting panel, an organic light-emitting lighting panel, and an inorganic light-emitting lighting panel, or one or more of a vehicle interior material, a vehicle glass window, a building ceiling, a building interior material, a building glass window, an aircraft interior material, and an aircraft glass window. Device.

34. A display panel for displaying an image; A support member disposed on a rear side of the display panel; a vibration device including a piezoelectric portion and a flexible portion, the vibration device being configured to generate a first vibration on a front surface of the display panel; a first member configured within the support member and spaced apart from a rear surface of the vibration device and configured to generate a second vibration at a rear surface of the support member; a second member connected between the support member and the first member; a gap space disposed between the rear surface of the vibration device and the first member; Including, the first member and the second member are arranged parallel to each other on the same plane separated from the rear surface of the vibration device via the gap space, the first member is vibrated by the vibration transmitted from the vibration device via the gap space, thereby generating the second vibration having a lower frequency than the first vibration; Device.

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