Device

Abstract

To provide a device which can generate vibration or acousmato by vibrating a vibration target object and can improve the characteristics of acousmato and / or characteristics of sound pressure.SOLUTION: The device according to an embodiment of the present specification includes: a display panel for displaying a picture; a vibration device arranged in the back surface of the display panel and vibrating the display panel; and a supporting material including a plurality of halls partially overlapping with the vibration device. The halls are arranged along at least one of a first direction and a second direction intersecting with the first direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] The device may include a separate speaker or sound device to provide sound. When a speaker is provided in the device or display device, the space occupied by the speaker imposes restrictions on the design and spatial layout of the device or display device.

[0003] The speaker applied to the 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, piezoelectric elements that can achieve a thin thickness are attracting attention.

[0004] Piezoelectric elements have a problem in that they are easily damaged by external impact due to their brittle characteristics, resulting in low reliability of sound reproduction.Furthermore, when a speaker such as a piezoelectric element is applied to a flexible device, the brittle characteristics also cause a problem in that it is easily damaged. 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 that can improve the sound quality of acoustics and the sound pressure characteristics. Through the multiple experiments, they invented an apparatus including a new vibration device that can improve the sound quality of acoustics 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 vibration object to generate vibration or sound, and that can improve the acoustic characteristics and / or sound pressure 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 those 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 disposed on the rear surface of the display panel that vibrates the display panel, and a support member that includes a plurality of holes that at least partially overlap with the vibration device, the plurality of holes being arranged along one or more of a first direction and a second direction that intersects with the first direction.

[0009] The device according to the embodiment of the present specification includes a vibration member, a vibration device disposed on the vibration member, and a support member disposed on the back surface of the vibration member, the support member including a plurality of holes that vary from the center of the vibration device to the edge portion.

[0010] An apparatus according to an embodiment of the present specification includes a vibration member, a vibration device disposed on the vibration member, and a support member disposed on the back surface of the vibration member, the support member including a plurality of holes overlapping at least a portion of the vibration device.

[0011] Specific details of the various embodiments of the present disclosure are found in the following description and drawings. [Effects of the Invention]

[0012] The device according to the embodiments of this specification is configured as a vibration device that vibrates a display panel or a vibrating member (or a vibrating object), and can generate sound so that the direction of sound travel from the device is in front of the display panel or the vibrating member (or the vibrating object).

[0013] The device according to the embodiment of the present specification can provide a device in which the sound output characteristics can be improved by configuring a pad member on the outside or inside of the vibration device.

[0014] 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 hole, and therefore can provide a device that can improve the acoustic characteristics and / or sound pressure characteristics of the low frequency band.

[0015] 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.

[0016] 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 explanation of the drawings]

[0017] [Figure 1] FIG. 1 illustrates an apparatus according to an embodiment of the present disclosure. [Figure 2A] FIG. 2 is a cross-sectional view taken along line II' shown in FIG. [Figure 2B] FIG. 2 is a cross-sectional view taken along line II' shown in FIG. [Figure 3] 1 illustrates a vibration device according to an embodiment of the present disclosure. [Figure 4] FIG. 4 is a cross-sectional view taken along line II-II' shown in FIG. [Figure 5A] 1 is a diagram showing a vibrating structure according to an embodiment of the present specification; [Figure 5B] 1 is a diagram showing a vibrating structure according to an embodiment of the present specification; [Figure 5C] 1 is a diagram showing a vibrating structure according to an embodiment of the present specification; [Figure 5D] 1 is a diagram showing a vibrating structure according to an embodiment of the present specification; [Figure 5E] 1 is a diagram showing a vibrating structure according to an embodiment of the present specification; [Figure 5F] 1 is a diagram showing a vibrating structure according to an embodiment of the present specification; [Figure 6] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 7]10A and 10B show vibration devices according to other embodiments of the present specification. [Figure 8] FIG. 8 is a cross-sectional view taken along line III-III' shown in FIG. 7. [Figure 9] FIG. 4 is a cross-sectional view taken along line II-II' shown in FIG. [Figure 10] FIG. 8 is a diagram illustrating the vibration unit shown in FIG. 7. [Figure 11] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 12] FIG. 12 is a cross-sectional view taken along line IV-IV′ shown in FIG. [Figure 13] 12 is another cross-sectional view taken along the line IV-IV' shown in FIG. 11. FIG. [Figure 14] 12 is another cross-sectional view taken along the line IV-IV' shown in FIG. 11. FIG. [Figure 15] 12 is another cross-sectional view taken along the line IV-IV' shown in FIG. 11. FIG. [Figure 16] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 17] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 18] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 19A] 19 is a cross-sectional view taken along line VV' shown in FIG. 18. [Figure 19B] 19 is another cross-sectional view of the line VV' shown in FIG. 18. [Figure 20A] 19 is another cross-sectional view of the line VV' shown in FIG. 18. [Figure 20B] 19 is another cross-sectional view of the line VV' shown in FIG. 18. [Figure 21A] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 21B] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 21C] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 22A] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 22B] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 23A] FIG. 1 illustrates a hole according to an embodiment of the present specification. [Figure 23B] FIG. 1 illustrates a hole according to an embodiment of the present specification. [Figure 23C] FIG. 1 illustrates a hole according to an embodiment of the present specification. [Figure 23D] FIG. 1 illustrates a hole according to an embodiment of the present specification. [Figure 23E] FIG. 1 illustrates a hole according to an embodiment of the present specification. [Figure 24] FIG. 1 illustrates the acoustic output characteristics of a device according to an embodiment of the present specification. [Figure 25] FIG. 1 illustrates the acoustic output characteristics of a device according to an embodiment of the present specification. [Figure 26] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 27A] FIG. 27 is a cross-sectional view taken along line VI-VI' shown in FIG. [Figure 27B] 27 is another cross-sectional view taken along the line VI-VI' shown in FIG. 26. FIG. [Figure 28] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 29A] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 29B] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 29C] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 30] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 31] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 32] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 33A] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 33B] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 34A] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 34B] FIG. 10 shows an apparatus according to another embodiment of the present disclosure. [Figure 35] FIG. 1 illustrates the acoustic output characteristics of a device according to an embodiment of the present specification. [Figure 36] FIG. 1 illustrates the acoustic output characteristics of a device according to an embodiment of the present specification. DETAILED DESCRIPTION OF THE INVENTION

[0018] The advantages and features of the present specification, and methods for achieving them, will become clearer with reference to the following detailed description of an embodiment accompanied by the 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 provided merely to complete the disclosure of the specification and to fully convey the scope of the invention to those skilled in the art to which the specification pertains. The specification is defined only by the scope of the claims.

[0019] The shapes, sizes, ratios, angles, numbers, etc. shown in the drawings for the purpose of explaining the embodiments of the present specification are merely illustrative and are not intended to limit the present specification to the details shown in the drawings. The same reference symbols refer to the same components throughout the specification. Furthermore, in describing the present specification, if a detailed description of related prior art is deemed to unnecessarily obscure the gist of the present invention, such a detailed description will be omitted. When terms such as "comprise," "have," and "consist of" are used in the present specification, other parts may be added unless "only" is used. When a component is expressed in the singular, the plural may also be included unless otherwise explicitly stated.

[0020] When interpreting elements, they are interpreted as including a margin of error even if there is no other explicit description.

[0021] When describing a positional relationship, for example when describing the positional relationship of two parts using "above," "on top," "below," or "beside," one or more other parts may be located between the two parts, unless "immediately" or "directly" is used.

[0022] When describing a temporal relationship, for example, when the temporal sequence is described using "after," "following," "next," or "before," it can also include cases where the words "immediately" or "directly" are not used.

[0023] Although terms such as "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, a first component referred to below may also be a second component within the technical concept of the present invention.

[0024] In describing components in this specification, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used. Such terms are used to distinguish the component 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 unless otherwise explicitly stated, there may also be other components "intervening" between components that are indirectly connected or connected.

[0025] The term "at least one" should be understood to include all possible combinations of one or more associated items. For example, "at least one of the first, second, and third items" may mean not only each of the first, second, or third items, but also all possible combinations of the first, second, and third items that can be present in two or more.

[0026] 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 that includes 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, television, computer monitor, automotive apparatus, or other form of vehicle apparatus, which is a complete product or final product that includes an LCM or OLED module, or a mobile electronic apparatus such as a smartphone or electronic pad.

[0027] Therefore, the device in this specification can include display devices such as LCMs and OLED modules, as well as application products including LCMs, OLED modules, etc. or set devices for end users.

[0028] In some embodiments, an LCM and OLED module including a display panel and a driver may be referred to as a "display device," and a completed electronic device 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 serving as a controller for driving the display panel. The set device may further include a set PCB (or control PCB) serving as a set controller electrically connected to the source PCB to drive the entire set device.

[0029] The display panel used in the embodiments of the present specification may be any type of display panel, such as a liquid crystal display panel, an organic light emitting diode (OLED) display panel, or 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 a vibration device according to the embodiments of the present specification. Furthermore, the display panel applied to the display device according to some embodiments of the present specification is not limited to a specific shape or size.

[0030] For example, if 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 the intersections of the gate lines and the data lines. The display panel may also include an array substrate including thin film transistors, which are switching elements for adjusting the light transmittance of each pixel, an upper substrate including color filters and / or a black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate.

[0031] 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 thin film transistors (TFTs) that selectively apply voltages to each pixel, an organic light-emitting device (OLED) layer on the array substrate, and an encapsulation substrate (or encapsulation substrate) disposed on the array substrate to cover the OLED layer. The encapsulation substrate may protect the TFTs and the OLED layer from external impact and prevent moisture and oxygen from penetrating the OLED 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, etc. In another embodiment of the present specification, the layer formed on the array substrate may include micro light-emitting diodes.

[0032] 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.

[0033] The features of the various embodiments of this specification may be partially or fully combined or combined with each other, and various technical interlocking and driving mechanisms may be possible, and each embodiment may be implemented independently of the other, or may be implemented together in a codependent relationship.

[0034] The following detailed description of the present invention will be given with reference to the accompanying drawings and examples. The scales of the components shown in the drawings may differ from the actual scales for the sake of convenience, and are not limited to the scales shown in the drawings.

[0035] When implementing speakers to provide sound to display devices, they can be implemented in the form of a film, allowing for a thin display device. Film-type vibration devices can be manufactured in large areas and are therefore applicable to large-area display devices, but they have the drawback of poor piezoelectric properties and low vibration, making them difficult to apply to large-area display devices. When implementing a vibration device using ceramic to improve piezoelectric properties, it suffers from poor durability and limitations on the size of the ceramic. When a vibration device made of a piezoelectric composite containing piezoelectric ceramic is applied to a display device, the piezoelectric composite primarily vibrates left and right relative to the horizontal direction, for example, left and right relative to the horizontal direction of the display device. This prevents the display device from vibrating sufficiently in the up and down (or front and back) directions, making it difficult to apply to the display device and preventing the necessary sound output from the front of the display device. When film-type piezoelectric materials are applied to a device, they suffer from poor sound pressure characteristics compared to speakers such as actuators. When a laminated piezoelectric material, which is made up of multiple films stacked together to form multiple layers of film-type piezoelectric materials, is applied to a device to improve sound pressure, it suffers from increased power consumption and a thicker device. Furthermore, it was recognized that when a single vibration device is placed 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. Therefore, while a vibration device can be placed on the edge of the display panel to achieve sound including stereo sound, it is difficult to place an exciter on a flexible device with a curved surface of the display panel, and when a speaker made of a piezoelectric element, for example, piezoelectric ceramic, is placed, there are problems that the piezoelectric ceramic is easily broken.

[0036] Therefore, the inventors of the present specification conducted several experiments to realize a vibration device that can achieve acoustic characteristics including stereophonic sound, can be applied to a flexible device, and can vibrate in the vertical direction based on the horizontal direction of a display panel. Through the multiple experiments, they invented a device including a vibration device with a new structure that can achieve acoustic characteristics including stereophonic sound, can be applied to a flexible device, and will be described below.

[0037] Figure 1 shows an apparatus according to an embodiment of the present specification. Figure 2A shows a cross-sectional view taken along line II' in Figure 1. Figure 2B shows another cross-sectional view taken along line II' in Figure 1.

[0038] 1 to 2B, a device according to an embodiment of the present specification may include a display panel 100 that displays an image and a vibration device 200 disposed on the rear surface (or back surface) of the display panel 100.

[0039] The display panel 100 can display an image, for example, an electronic image or a digital image. For example, the display panel 100 can display an image by outputting light. The display panel 100 can 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 can be a flexible display panel. For example, the display panel 100 can 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.

[0040] 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).

[0041] The display panel 100 according to the embodiments of the present specification can display images in a top emission mode, a bottom emission mode, a dual emission mode, 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 mode can display images by emitting light generated in the pixel array layer to the front of the base substrate, and the bottom emission mode can display images by emitting light generated in the pixel array layer to the rear of the base substrate.

[0042] 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 images 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.

[0043] Each of the plurality of pixels may include a pixel circuit layer including a driving thin film transistor disposed 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.

[0044] A driving thin film transistor may be configured in a transistor region of each pixel region disposed on a 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 an oxide such as IGZO (Indium-Gallium-Zinc-Oxide).

[0045] The anode electrode may be disposed in an opening region disposed in each pixel region and electrically connected to the driving thin film transistor.

[0046] A light-emitting device according to an embodiment of the present disclosure may include a light-emitting device layer formed on an anode electrode. The light-emitting device layer may be configured to emit light of the same color, e.g., white, for each pixel, or may emit light of different colors, e.g., red, green, or blue, for each pixel. A cathode electrode (or common electrode) may be commonly connected to the light-emitting device layer 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 disclosure, 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 configured as one or more of blue, red, yellow-green, and green, or combinations thereof, but are not limited thereto. Examples of combinations include, but are not limited to, blue and red, red and yellow-green, red and green, and red, yellow-green, and green. The combinations may be applied regardless of the stacking order. A stack structure including two or more structures of 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 including an N-type charge generation layer and a P-type charge generation layer.

[0047] A light-emitting device according to another embodiment of the present specification may include a micro light-emitting diode element electrically connected to an anode electrode and a cathode electrode, respectively. 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.

[0048] The encapsulant is formed on the substrate to surround the pixel array unit and can prevent oxygen or moisture from penetrating into the light-emitting element layer of the pixel array unit. The encapsulant according to the embodiments of the present specification may have a multi-layer structure in which organic and inorganic material layers are alternately stacked, but is not limited to this structure. The inorganic material layer can block oxygen or moisture from penetrating into the light-emitting element layer of the pixel array unit. The organic material layer may be formed to a thickness relatively thicker than the inorganic material layer to cover foreign particles that may be generated during the manufacturing process, but is not limited to this structure. For example, the encapsulant 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 a foreign material covering layer, but is not limited to this structure. The touch panel may be disposed on the encapsulant or on the back surface of the pixel array unit.

[0049] A display panel 100 according to an embodiment of the present disclosure may include a first substrate, a second substrate, and a liquid crystal layer. The first substrate may be an upper substrate or a thin film transistor array substrate. For example, the first substrate may include a pixel array (or display unit or display area) having a plurality of pixels formed in a pixel area 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 to which a common voltage is supplied.

[0050] The first substrate may further include a pad section provided on the first edge section (or the first non-display section) and a gate driving circuit provided on the second edge section (or the second non-display section).

[0051] The pad unit may supply external signals to the pixel array and / or the gate driving circuit. For example, the pad unit may include a plurality of data pads connected to a plurality of data lines 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 first substrate may be larger than the second substrate, but is not limited thereto.

[0052] The gate driving circuit may be built into (or integrated with) the second edge of the first substrate so as to be connected to the plurality of gate lines. For example, the gate driving circuit may be realized as 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 this specification may be included in the panel driving circuit in the form of an integrated circuit, rather than being built into the first substrate.

[0053] 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 including opening regions overlapping pixel regions formed on the first substrate, and a color filter layer formed in the opening regions. The second substrate may be smaller than the first substrate, but is not limited thereto. For example, the second substrate may overlap the 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, sandwiching the liquid crystal layer, using a sealant.

[0054] A liquid crystal layer may be disposed between the first and second substrates, and may be made of liquid crystal, the alignment direction of which is changed by an electric field formed by a data voltage and a common voltage applied to pixel electrodes for each pixel.

[0055] The second polarizing member is attached to the lower surface of the second substrate to polarize light incident from the backlight and traveling to the liquid crystal layer, and the first polarizing member is attached to the upper surface of the first substrate to polarize light passing through the first substrate and emitting to the outside.

[0056] 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.

[0057] 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 another embodiment of the present specification may be covered by a separate mechanism.

[0058] The display panel 100 according to other embodiments of the present disclosure may have a curved shape or may include a bent portion that is bent or curved to have a certain radius of curvature.

[0059] The bent portion of the display panel 100 may be realized in at least one of one edge portion and the other edge portion of the display panel 100 that are parallel to each other. The one edge portion and / or the other edge portion of the display panel 100 that realizes the bent portion may include only the non-display area (IA), or may include the edge portion of the display area (AA) and the non-display area (IA). The display panel 100 that includes 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. The display panel 100 that includes 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.

[0060] 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 vibrate the display panel 100 at the rear surface of the display panel 100, thereby providing acoustic and / or haptic feedback to the user through the vibration of 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 display panel 100 can be a vibrating object, a vibrating member, a diaphragm, or a front member, but is not limited to these terms.

[0061] According to an embodiment of the present specification, the vibration device 200 can vibrate the display panel 100 by vibrating in response to an audio 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 in response 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 or built into the display panel 100. As a result, the display panel 100 can vibrate in response to the vibration of the vibration device 200 to provide at least one of audio and haptic feedback to the user (or viewer).

[0062] The vibration device 200 according to the embodiments of the present specification may be sized to correspond 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, thereby covering most of the area of ​​the display panel 100. Since the vibration generated by the vibration device 200 can vibrate the entire area of ​​the display panel 100, the sense of sound localization may be enhanced, and user satisfaction may be improved. Furthermore, since the contact area (or panel coverage) between the display panel 100 and the vibration device 200 increases, the vibration area of ​​the display panel 100 may increase, thereby improving the mid- and low-frequency sound generated by the vibration of the display panel 100. Furthermore, 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 due to the vibration of the display panel 100 and achieving an improved sound effect. Therefore, the vibration device 200 according to the embodiments 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 desired sound in front of the device (or display device).

[0063] 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 embodiments 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, and thus the increase in the thickness of the display panel 100 due to the placement of the vibration device 200 may be minimized. For example, the vibration device 200 may be expressed as a vibration generator, a displacement device, an acoustic device, or a sound generating device, but is not limited to these terms. For example, the vibration device 200 may be expressed as a sound generating module using the display panel 100 or a vibrating member (or a vibrating object) as an acoustic diaphragm, a sound generating 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, but is not limited to these terms. In another embodiment of the present specification, the vibration device 200 may not be disposed on the rear surface of the display panel 100 and may be applied to a non-display panel rather than a display panel. For example, the vibration device 200 can be applied to, but is not limited to, wood, plastic, glass, cloth, paper, leather, automobile interior materials, building interior ceilings, and aircraft interior materials, etc. In this case, a non-visible panel can be applied as a diaphragm, and the vibration device 200 can vibrate the non-visible panel to output sound.

[0064] For example, an apparatus according to an embodiment of the present disclosure 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 that display an image, or may include a non-display panel. For example, the vibrating member may include a display panel having a plurality of pixels that display an image, or may be one or more of, but not limited to, wood, plastic, glass, cloth, paper, leather, automobile interior materials, automobile glass windows, interior ceilings of buildings, glass windows of buildings, interior materials of buildings, interior materials of aircraft, and glass windows of aircraft. For example, the vibrating member may include, but is not limited to, one or more of a display panel having pixels that display an image, a screen panel onto which an image is projected from a display device, a lighting panel, a signage panel, interior materials of vehicles, glass windows of vehicles, exterior materials of vehicles, ceiling materials of buildings, interior materials of buildings, glass windows of buildings, interior materials of aircraft, glass windows of aircraft, and a mirror. 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), an inorganic light emitting lighting panel (or device), etc. For example, the vibrating member may include a display panel having a plurality of pixels that display an image, or may be, but is not limited to, one or more of 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).

[0065] According to another embodiment of the present disclosure, the vibrating member may further include a plate, and the plate may include, but is not limited to, a metal material or a single or composite non-metallic material selected from the group consisting of wood, plastic, glass, cloth, paper, and leather. According to another embodiment of the present disclosure, 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 cone paper for a speaker. For example, the cone paper may be, but is not limited to, pulp or foam plastic.

[0066] The vibration device 200 may be disposed on the rear surface of the display panel 100 so as to overlap with the display area AA of the display panel 100. For example, the vibration device 200 may overlap with 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 with the entire display area AA of the display panel 100.

[0067] The vibration device 200 according to an embodiment of the present specification can vibrate by alternately repeating contraction and expansion due to the inverse piezoelectric effect when an AC voltage is applied, and can vibrate the display panel 100 using such vibration. For example, the vibration device 200 can vibrate the display panel 100 by vibrating in response to an audio 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 in response 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 or built into the display panel 100, thereby vibrating the display panel 100. As a result, the display panel 100 can vibrate in response to the vibration of the vibration device 200, thereby providing at least one of audio and haptic feedback to the user (or viewer).

[0068] 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. Furthermore, the device according to the embodiment of the present specification can vibrate most of the area of ​​the display panel 100 using the film-shaped vibration device 200, which can further improve the sound pressure characteristics and sound localization sense of the sound caused by the vibration of the display panel 100.

[0069] The device according to the embodiment of the present specification may further include a connecting member 150 (or a first connecting member) between the display panel 100 and the vibration device 200.

[0070] 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.

[0071] The connecting member 150 according to the embodiments of the present specification may be made of a material including an adhesive layer with excellent adhesion or bonding strength to 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, double-sided tape, or 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) that has relatively excellent adhesion and high hardness among acrylic and urethane. This allows vibrations from the vibrating device 200 to be efficiently transmitted to the display panel 100.

[0072] The adhesive layer of the connecting member 150 may further include additives such as, but not limited to, a tackifier, a wax component, or an antioxidant. The additives can prevent the connecting member 150 from being separated (or peeled) 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 phenolic antioxidant such as thioester, but are not limited to these.

[0073] The connecting member 150 according to other embodiments 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 rather than 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.

[0074] 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 .

[0075] 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) interposed 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, but is not limited to, a rear structure, a set structure, a support structure, a support cover, a rear member, a case, or a housing. 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.

[0076] The edges or sharp corners of the support member 300 may be beveled or curved by a chamfering or rounding process. For example, the glass support member 300 may be made of 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 iron (Fe)-nickel (Ni) alloy.

[0077] The inventors of this specification conducted several experiments to improve the acoustic characteristics of the low frequency range, since the acoustic characteristics of the low frequency range deteriorate when the vibration device 200 is configured as a film-type vibration device. Through these experiments, they invented a device with a new structure that can improve the acoustic characteristics of the low frequency range. This will be explained below.

[0078] It has been recognized that the air pressure of the device must be reduced to improve the acoustic characteristics of the low-frequency range. For example, the air pressure inside the device can be released to the outside to improve the acoustics of the vibration device. Because the vibration device 200 is disposed between the display panel 100 and the support member 300, a structure capable of releasing the air pressure to the outside may be necessary. To release 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 predetermined regions of the support member 300 to reduce the air pressure in the gap space (GS) within the device. For example, the plurality of holes 301 of the support member 300 can reduce the air pressure in the gap space (GS) to extend the low-frequency range, thereby improving the acoustic characteristics of the low-frequency range. For example, as the pressure (or air pressure) in the gap space is reduced by the holes 301, the displacement (or bending force) of the vibration device 200 disposed between the display panel 100 or the vibrating member (or the vibrating object) and the support member 300 may increase, thereby expanding the bass band and improving the acoustic characteristics and / or sound pressure characteristics of the bass band. For example, the holes 301 may be smaller than the size of the vibration device 200. If the holes 301 are not disposed in the support member 300, the air pressure in the gap space (GS) due to sound waves or sound generated by the vibration of the vibration device 200 may increase, thereby degrading the acoustic characteristics of the bass band.

[0079] According to the embodiment of the present specification, by forming the holes 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 holes 301. As a result, the frequency band of the bass frequency band can be expanded, thereby improving the acoustic characteristics of the bass frequency band.

[0080] According to an embodiment of the present specification, the holes 301 may be arranged at positions 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, and size of the holes 301 may be variously configured. As shown in FIGS. 2A and 2B , the holes 301 may be arranged at predetermined intervals in an area of ​​the support member 300 corresponding to the vibration device 200. For example, the holes 301 may be arranged along a portion of the vibration device 200, for example, along an edge portion of the vibration device 200.

[0081] According to the exemplary embodiment of the present specification, vibrations may occur differently depending on the position of the vibration device 200 disposed on the display panel 100, which may result in sounds resulting from the vibration of the display panel 100 not having the same phase. For example, because multiple locations on the display panel 100 may not have the same phase, split vibrations may occur that do not have the same vibration direction. For example, if holes are disposed at the same intervals or with the same shape on the support member 300, it may be difficult to output vibrations and sounds having the same vibration direction or phase due to split vibrations. Therefore, the holes 301 on the support member 300 may be disposed to separate an area where the vibration device 200 is disposed from an area where the vibration device 200 is not disposed. For example, different holes 301 may be disposed closer to the area where the vibration device 200 is not disposed than the area where the vibration device 200 is disposed. For example, the holes 301 on the support member 300 may be disposed so that they vary from the center of the vibration device 200 to the edge.

[0082] According to an embodiment of the present specification, the plurality of holes 301 may overlap with the vibration device 200. For example, the plurality of holes 301 may be arranged along one or more of a first direction and a second direction intersecting the first direction.

[0083] According to an embodiment of the present specification, when the support member 300 includes a first region reached by sound waves or vibrations of a first intensity and a second region reached by sound waves or vibrations of a second intensity less than the first intensity, the density of the holes 301 arranged in the second region may be greater than the density of the holes 301 arranged in the first region. For example, the number of holes 301 arranged in the second region of the support member 300 may be greater than the number of holes 301 arranged in the first region of the support member 300. For example, the number of holes 301 arranged in the second region of the support member 300 may be greater than the number of holes 301 arranged in the first region.

[0084] According to an embodiment of the present specification, the support member 300 may 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 and second regions. The holes 301 may be arranged in the first and third regions. For example, the holes 301 arranged in the first region may have a first density, and the holes 301 arranged in the third region may have a second density different from the first density. For example, the holes 301 arranged in the first region may have a first density, and the holes 301 arranged in the third region may have a second density higher than the first density. For example, the number of holes 301 arranged in the first region may be different from the number of holes 301 arranged in the third region, or the size of the holes 301 arranged in the first region may be different from the size of the holes 301 arranged in the third region. For example, the number of holes 301 arranged in the first region may be smaller than the number of holes 301 arranged in the third region, or the size of the holes 301 arranged in the first region may be smaller than the size of the holes 301 arranged in the third region. For example, the number of holes 301 may increase from the first region to the second region, or the density of the holes 301 may increase from the first region to the second region.

[0085] According to an embodiment of the present specification, the support member 300 may 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 and second regions. The holes 301 may be arranged in the second and third regions. For example, the holes 301 arranged in the second region may have a first density, and the holes 301 arranged in the third region may have a second density different from the first density. For example, the holes 301 arranged in the second region may have a first density, and the holes 301 arranged in the third region may have a second density lower than the first density. For example, the number of holes 301 arranged in the second region may be different from the number of holes 301 arranged in the third region, or the size of the holes 301 arranged in the second region may be different from the size of the holes 301 arranged in the third region. For example, the number of holes 301 arranged in the second region may be greater than the number of holes 301 arranged in the third region, or the size of the holes 301 arranged in the second region may be greater than the size of the holes 301 arranged in the third region. For example, the number of holes 301 may decrease from the second region to the third region, or the density of the holes 301 may decrease from the second region to the third region.

[0086] The support member 300 according to embodiments of the present disclosure may include a first support member 310 and a second support member 330 .

[0087] 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 side 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 of a glass material, a metal material, and a plastic material. For example, the first support member 310 may be an inner plate, a first rear structure, a first support structure, a first support cover, a first back cover, a first rear member, an inner surface plate, or an inner surface cover, but is not limited to these terms. For example, the first support member 310 may be omitted.

[0088] 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, an acoustic resonator, or the like, but is not limited to these terms.

[0089] 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 an outer plate, a rear plate, a back plate, a back cover, a rear cover, a second rear structure, a second support structure, a second support cover, a second back cover, a second rear member, an external plate, or an external cover, but is not limited to these terms.

[0090] 2A, the plurality of holes 301 may be arranged in the second support member 330. Referring to FIG. 2B, the plurality of holes 301 may be arranged in the first support member 310 and the second support member 330. When the plurality of holes 301 is formed up to the second support member 330, the air impedance is reduced, thereby improving the acoustic characteristics and / or sound pressure characteristics in the low frequency range. As another example of the present specification, when there is a space between the first support member 310 and the second support member 330, the plurality of holes 301 may be formed only in the first support member 310.

[0091] The support member 300 according to the embodiment of the present specification may further include a connecting member 350 (or a second connecting member).

[0092] 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, double-sided tape, a foam pad, 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 over the entire area between the first support member 310 and the second support member 330. In another embodiment 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.

[0093] The display device according to the embodiments of the present specification may further include a middle frame 400. The middle frame 400 may be 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. 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 sides 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 referred to as a middle cabinet, middle cover, middle chassis, connecting member, frame, frame member, intermediate member, side cover member, or the like, but is not limited to these terms.

[0094] The middle frame 400 according to the embodiments of the present specification may include a first support portion 410 and a second support portion 430. For example, the first support portion 410 may be a support portion, but is not limited to this term. For example, the second support portion 430 may be a side wall portion, but is not limited to this term.

[0095] The first support portion 410 is disposed between the rear edge portion of the display panel 100 and the front edge portion 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 portion 410 may be coupled or connected to the rear edge portion 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 portion 410 may be coupled or connected to the front edge portion of the support member 300 via a second connecting member 403 (or a second frame connecting member 403). For example, the first support portion 410 may have a single rectangular frame structure or may include a frame structure having a shape of multiple dividing bars, but is not limited thereto.

[0096] 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 so as to be 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.

[0097] An apparatus according to an embodiment of the present disclosure may include a panel connecting member in place of the middle frame 400 .

[0098] The panel connecting member is disposed between the rear edge of the display panel 100 and the front edge 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 the rear edge of the display panel 100 and the front edge of the support member 300 to bond the display panel 100 to the support member 300. For example, the panel connecting member may be implemented as, but is not limited to, double-sided tape, 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) that is relatively softer than acrylic, in order to minimize transmission of vibrations from the display panel 100 to the support member 300. This can minimize vibrations of the display panel 100 transmitted by the support member 300.

[0099] In a device according to an embodiment of the present disclosure, when a panel connecting member is included instead of the middle frame 400, the support member 300 may include a curved sidewall that is bent from one end (or end portion) of the second support member 330 and surrounds 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 an embodiment of the present disclosure may have a single sidewall structure or a hemming structure. A hemming structure may be a structure in which the ends of a member are bent into a curved shape, overlapping each other, and spaced apart from each other. For example, to improve the aesthetic appeal of the side design, the curved sidewall may include a first curved sidewall that is bent from one side (or end portion) 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 bent side wall may contact the inner surface of the first bent side wall or may be spaced apart from the inner surface of the first bent side wall so as to mitigate external impact in the lateral direction from being transmitted to the outer surface of the display panel 100. In this way, the second bent side wall may prevent the outer surface of the display panel 100 from contacting the inner surface of the first bent side wall or mitigate external impact in the lateral direction from being transmitted to the outer surface of the display panel 100.

[0100] In other embodiments of the present disclosure, the middle frame 400 may be omitted from 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 instead of the middle frame 400. The apparatus according to other embodiments of the present disclosure may include a partition instead of the middle frame 400.

[0101] 3 is a diagram showing a vibration device according to an embodiment of the present specification, and FIG 4 is a cross-sectional view taken along line II-II' shown in FIG 3.

[0102] 2A to 4, 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.

[0103] The vibration generator 210 according to the embodiment of the present specification may include a plurality of vibrating structures 210A, 210B, 210C, and 210D that are electrically separated and spaced apart from one another along 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 vibrating structures 210A, 210B, 210C, and 210D may vibrate by alternately repeating contraction and expansion due to the piezoelectric effect (or piezoelectric characteristics). The vibration generator 210 according to the embodiment of the present specification may vibrate in the thickness direction (Z) by alternately repeating contraction and expansion due to the inverse piezoelectric effect, thereby directly vibrating the display panel 100. The vibration generator 210 may include a plurality of vibrating structures 210A, 210B, 210C, and 210D that are arranged at regular intervals or tiled. For example, the plurality of vibration generators 210 may include: The plurality of vibrating structures 210A, 210B, 210C, 210D may be, but are not limited to, a vibrating film, a displacement generator, a displacement film, an acoustic generator, a vibrating array, a vibrating array section, a vibrating array structure section, a vibrating array structure, a tiling vibrating array, a tiling vibrating array module, or a tiling vibrating film. For example, the plurality of vibrating structures 210A, 210B, 210C, 210D may be, but are not limited to, a vibration generating section, a vibrating array, a vibration generating array, a divided vibrating array, a partial vibrating array, a partial vibrating structure, a divided vibrating structure, or an individual vibrating structure.

[0104] Each of the plurality of vibrating structures 210A, 210B, 210C, and 210D according to the embodiments 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.

[0105] Each of the multiple vibrating structures 210A, 210B, 210C, and 210D is arranged or tiled in an i×j shape on the same plane, so that the vibration generator 210 can have a large area by tiling the multiple vibrating structures 210A, 210B, 210C, and 210D, each having a relatively small size. For example, i is the number of vibrating structures arranged along the first direction (X) and is a natural number equal to or greater than 2, and j is the number of vibrating structures arranged along the second direction (Y) and may be a natural number equal to or greater than 1, which may be the same as or different from i.

[0106] Each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may be arranged at regular intervals or tiled to form a single vibrating device (or a single vibrating device) that is not driven independently but is driven as a single, integral unit. According to an embodiment of the present specification, a first separation distance (D1) between the plurality of vibrating structures 210A, 210B, 210C, and 210D in the 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 vibrating structures 210A, 210B, 210C, and 210D in the 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. For example, the first separation distance (D1) and the second separation distance (D2) may be the same within a process tolerance.

[0107] According to an embodiment of the present specification, the plurality of vibrating structures 210A, 210B, 210C, and 210D may be arranged or tiled with a separation distance (or interval) (D1, D2) of 0.1 mm or more and less than 3 cm, so that they can be driven as a single vibration device. This may increase the reproduction band and sound pressure characteristics of the sound generated in conjunction with the single-body vibration of the plurality of 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 plurality of 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 plurality of vibrating structures 210A, 210B, 210C, and 210D may be arranged with an interval of 0.1 mm or more and less than 5 mm.

[0108] According to the embodiments of the present specification, when multiple vibrating structures 210A, 210B, 210C, and 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, and 210D or the vibration generator 210 may be reduced due to cracks or damage caused by physical contact between the vibrating structures 210A, 210B, 210C, and 210D when they vibrate.

[0109] According to the embodiments 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 a single vibrating device due to the independent vibrations of each of the multiple vibrating structures 210A, 210B, 210C, and 210D. This may result in a reduction in the reproduction frequency band and sound pressure characteristics of the sound generated in conjunction with the vibrations 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 range of the sound, for example, below 500 Hz, may be reduced.

[0110] 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 vibrating device, and therefore the acoustic characteristics and sound pressure characteristics may be reduced in the low frequency range of sound, for example, below 200 Hz.

[0111] 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 a single vibrating device, thereby increasing the sound reproduction band and increasing the characteristics of low-frequency sounds, for example, sound pressure below 500 Hz. 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, and the reproduction band of the sound generated in conjunction with the large-area vibration of the vibration generator 210 and the acoustic characteristics and sound pressure characteristics of the low-frequency band can each be increased or improved.

[0112] Therefore, in order to realize single-body vibration of the plurality of vibrating structures 210A, 210B, 210C, and 210D (or one vibrating device), the separation distance between the plurality of vibrating structures 210A, 210B, 210C, and 210D may be set to 0.1 mm or more and less than 3 cm. Also, in order to realize single-body vibration of the plurality of vibrating structures 210A, 210B, 210C, and 210D (or one vibrating device) and increase the sound pressure characteristics in the low-frequency range of sound, the separation distance between the plurality of vibrating structures 210A, 210B, 210C, and 210D may be set to 0.1 mm or more and 5 mm or less.

[0113] The vibration generator 210 according to the embodiment of the present specification may include first to fourth vibrating structures 210A, 210B, 210C, and 210D. For example, the first to fourth vibrating 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 vibrating structures 210A, 210B, 210C, and 210D may be arranged or tiled in a 2x2 pattern.

[0114] According to other embodiments of the present specification, the first and second vibrating structures 210A, 210B may be spaced apart from each other along the first direction (X). The third and fourth vibrating structures 210C, 210D may be spaced apart from each other along the first direction (X) and from the first and second vibrating structures 210A, 210B along the second direction (Y). 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).

[0115] According to other embodiments of the present specification, the first to fourth vibrating structures 210A, 210B, 210C, and 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 the second direction (Y), or may be arranged (or tiled) at intervals (D1, D2) of 0.1 mm or more and less than 5 mm, for driving as one vibrating device, vibrating as a single body, or vibrating a large-area vibrating body of the vibration generator 210.

[0116] Each of the first to fourth vibrating structures 210A, 210B, 210C, and 210D according to the embodiments of the present specification can include a vibrating portion 211, a first electrode portion (E1), and a second electrode portion (E2).

[0117] The vibrating unit 211 may include a piezoelectric material having a piezoelectric effect, a composite piezoelectric material, or an electroactive material. The vibrating unit 211 may be expressed by terms such as a piezoelectric vibrating unit, a piezoelectric vibration layer, a displacement unit, a piezoelectric displacement unit, a piezoelectric displacement layer, a sound wave generating unit, a vibration layer, a piezoelectric material layer, a piezoelectric composite layer, an electroactive layer, a piezoelectric material unit, a piezoelectric composite unit, an electroactive unit, a piezoelectric structure, a piezoelectric composite, or a piezoelectric ceramic composite, but is not limited to these terms.

[0118] The vibrating part 211 according to the embodiment of the present specification may be made of a ceramic-based material that can realize 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 ) can be 1,000 pC / N or more, but is not limited to this.

[0119] The first electrode unit (E1) may be disposed on a first surface (or upper surface) of the vibrating unit 211 and may be electrically connected to the first surface of the vibrating unit 211. For example, the first electrode unit (E1) may have a single electrode (or common electrode) shape disposed over the entire first surface of the vibrating unit 211. The first electrode unit (E1) according to the embodiments 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, indium tin oxide (ITO) or indium zinc oxide (IZO). The opaque conductive material may include, but is not limited to, aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium (Mg), or an alloy thereof.

[0120] The second electrode unit (E2) may be disposed on a second surface (or rear surface) opposite to the first surface of the vibrating unit 211 and electrically connected to the second surface of the vibrating unit 211. For example, the second electrode unit (E2) may have a single electrode (or common electrode) shape disposed over the entire second surface of the vibrating unit 211. The second electrode unit (E2) according to the embodiments 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 unit (E2) may be made of the same material as the first electrode unit (E1), but is not limited thereto. In other embodiments of the present specification, the second electrode unit (E2) may be made of a different material from the first electrode unit (E1).

[0121] The vibrating part 211 may be polarized (or subjected to a polling treatment) by a constant voltage applied to the first electrode part (E1) and the second electrode part (E2) in a constant temperature atmosphere or a temperature atmosphere that changes from high temperature to room temperature, but is not limited thereto.

[0122] 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.

[0123] 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 portion (E1) disposed on the first surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. As a result, the first protective member 213 may be commonly connected to the first surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D, or may commonly support the first surfaces of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. Therefore, the first protective member 213 may protect the first surface or the first electrode portion (E1) of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0124] The first protective member 213 according to the embodiment of the present specification may be disposed on the first surface of each of the plurality of 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 plurality of vibrating structures 210A, 210B, 210C, and 210D by a film lamination process using the first adhesive layer 212 as an intermediary. Therefore, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may be integrated with (or disposed on) or tiled with the first protective member 213 so as to have a certain interval (D1, D2).

[0125] 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 portion (E2) disposed on the second surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. Thus, the second protective member 215 may be commonly connected to the second surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D, or may commonly support the second surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. Therefore, the second protective member 215 may protect the second surface or the second electrode portion (E2) of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0126] 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. Therefore, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may be integrated with (or disposed on) or tiled with the second protection member 215 so as to have a certain interval (D1, D2).

[0127] Each of the first and second protective members 213 and 215 according to the embodiment of the present specification may include a plastic film, such as, but not limited to, a polyimide film or a polyethylene terephthalate film.

[0128] The first adhesive layer 212 may be disposed on the first surfaces of each 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 each of the plurality of vibrating structures 210A, 210B, 210C, and 210D, and filled between the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0129] The second adhesive layer 214 may be disposed on the second surfaces of each 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 the front surface (or inner surface) of the second protective member 215 facing the second surface of the vibration generator 210, disposed on the second surfaces of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D, and filled between the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0130] The first adhesive layer 212 and the second adhesive layer 214 may be connected or bonded to each other between the multiple vibrating structures 210A, 210B, 210C, and 210D. As a result, each of the multiple vibrating 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 vibrating structures 210A, 210B, 210C, and 210D. For example, the first adhesive layer 212 or the second adhesive layer 214 may be disposed between the first protective member 213 and the second protective member 215 so as to completely cover the vibrating portion 211, the first electrode portion (E1), and the second electrode portion (E2). For example, the vibration unit 211, the first electrode unit (E1), and the second electrode unit (E2) may be embedded or built in between 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 be expressed as, but are not limited to, cover members. 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.

[0131] According to an embodiment of the present specification, each of the first adhesive layer 212 and the second adhesive layer 214 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, epoxy resin, acrylic resin, silicone resin, or urethane resin.

[0132] 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 217.

[0133] 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 portion (E1) of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the first power supply line (PL1) may be electrically connected directly to the first electrode portion (E1) of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the first power supply line (PL1) may be electrically connected to the first electrode portion (E1) of each of the plurality of vibrating 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 portions (E1) of the plurality of vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the first adhesive layer 212.

[0134] The first power supply line (PL1) according to the embodiment of the present specification may include first and second upper power lines 213a and 213b arranged along the second direction (Y). For example, the first upper power line 213a may be electrically connected to the first electrode unit (E1) of each of the first vibrating structure 210A and the third vibrating structure 210C (or a first group) among the plurality of vibrating structures 210A, 210B, 210C, and 210D, which are parallel to the second direction (Y). The second upper power line 213b may be electrically connected to the first electrode unit (E1) of each of the second vibrating structure 210B and the fourth vibrating structure 210D (or a second group) among the plurality of vibrating structures 210A, 210B, 210C, and 210D, which are parallel to the second direction (Y).

[0135] The second power supply line (PL2) may be disposed on the second protection member 215. For example, the second power supply line (PL2) may be disposed on a front surface of the second protection 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 portion (E2) of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the second power supply line (PL2) may be electrically connected directly to the second electrode portion (E2) of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the second power supply line (PL2) may be electrically connected to the second electrode portion (E2) of each of the plurality of vibrating 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 portions (E2) of the plurality of vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the second adhesive layer 214.

[0136] 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 portion (E2) of each of the first vibrating structure 210A and the third vibrating structure 210C (or a first group) among the plurality of vibrating structures 210A, 210B, 210C, and 210D, which are parallel to the second direction (Y). The second lower power line 215b may be electrically connected to the second electrode portion (E2) of each of the second vibrating structure 210B and the fourth vibrating structure 210D (or a second group) among the plurality of vibrating structures 210A, 210B, 210C, and 210D, which are parallel to the second direction (Y).

[0137] The pad unit 217 may electrically connect the first power supply line (PL1) and the second power supply line (PL2). For example, the pad unit 217 may be disposed on the vibration generator 210 so as to be electrically connected to a portion (or one end) of each of the first power supply line (PL1) and the second power supply line (PL2). The pad unit 217 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).

[0138] 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.

[0139] 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.

[0140] The vibration device 200 or vibration generator 210 according to the embodiments of the present disclosure may further include a signal cable 219 .

[0141] The signal cable 219 is electrically coupled to the pad portion 217 disposed on the vibration device 200 or the vibration generator 210, and can supply a vibration drive signal (or an acoustic signal) provided from the acoustic processing circuit to the vibration device 200 or the vibration generator 210. The signal cable 219 according to the embodiments of the present specification may include a first terminal and a second terminal. The first terminal of the signal cable 219 may be electrically coupled to a first pad electrode of the pad portion 217. The second terminal of the signal cable 219 may be electrically coupled to a second pad electrode of the pad portion 217. For example, the signal cable 219 may be formed of, but is not limited to, a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board. For example, the signal cable 219 may be transparent, translucent, or opaque.

[0142] The acoustic processing circuit can generate AC vibration drive signals 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 (+) vibration drive signal or a negative (-) vibration drive signal, and the second vibration drive signal can be either a positive (+) vibration drive signal or a negative (-) vibration drive signal. For example, the first vibration drive signal can be supplied to the first electrode portion (E1) of each of the multiple vibrating structures 210A, 210B, 210C, and 210D via a first terminal of the signal cable 219, a first pad electrode of the pad portion 217, and a first power supply line (PL1). The second vibration drive signal can be supplied to the second electrode portion (E2) of each of the multiple vibrating structures 210A, 210B, 210C, and 210D via a second terminal of the signal cable 219, a second pad electrode of the pad portion 217, and a second power supply line (PL2).

[0143] The vibration generator 210 according to the embodiments of the present disclosure may further include a plate 216 .

[0144] 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).

[0145] 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). 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.

[0146] 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.

[0147] The plate 216 according to the embodiments of the present disclosure may be made of one or more metal materials, such as, but not limited to, stainless steel, aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy. 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 reduce the resonant frequency of the vibration generator 210 due to an increase in mass. This increases the acoustic characteristics and sound pressure characteristics of the low-frequency range of the sound generated in conjunction with the vibration of the vibration generator 210, thereby improving 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.

[0148] Therefore, the vibration device 200 according to the embodiment of the present specification includes a vibration generator 210 having a plurality of vibrating structures 210A, 210B, 210C, and 210D arranged (or tiled) at regular intervals (D1, D2) so that they are realized as one single vibrating body without being driven independently, and can be driven as a large-area vibrating body by single-body vibration of the plurality of vibrating 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 can 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.

[0149] Furthermore, the vibration device 200 according to the embodiment of the present specification further includes the plate 216 disposed on the vibration generator 210, thereby allowing the plate 216 to reduce the resonance frequency of the vibration generator 210. As a result, the vibration device 200 according to the embodiment of the present specification can increase the acoustic characteristics and sound pressure characteristics in the low frequency range generated by the vibration of the display panel 100 linked to the vibration of the vibration generator 210, thereby improving the flatness of the sound pressure characteristics.

[0150] 5A to 5F are diagrams showing a vibrating structure according to an embodiment of the present specification.

[0151] 3, 4, and 5A, 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 may include a vibrating portion 211. For example, a vibration device according to the embodiment of the present specification may include two or more vibrating structures. For example, each of the two or more vibrating structures may include a first portion 211a and a second portion 211b. For example, the first portion 211a may include an inorganic material, and the second portion 211b may include an organic material. For example, the first portion 211a may have piezoelectric properties, and the second portion 211b may have soft properties or flexibility. For example, the inorganic material of the first portion 211a may have piezoelectric properties, and the organic material of the second portion 211b may have soft properties or flexibility. The vibrating portion 211 may include a plurality of first portions 211a and a plurality of second portions 211b. For example, the plurality of first portions 211a and the plurality of second portions 211b may be alternately arranged 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 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 all have the same size, for example, width, area, or volume. For example, each of the plurality of second portions 211b may all have the same size, for example, width, area, or volume, within the range of process error (or tolerance) occurring in the 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 line or stripe shapes having the same or different sizes.5A has a 2-2 composite structure, the resonance frequency of which is 20 kHz or less. However, the resonance frequency of the vibration part 211 can be changed by changing at least one of the shape, length, and thickness of the vibration part 211.

[0152] According to embodiments of the present specification, the first portion 211a may be, but is not limited to, a piezoelectric portion, a piezoelectric body, an inorganic portion, an inorganic material portion, a piezoelectric layer, a vibration layer, a displacement layer, or a displacement body, etc. For example, the second portion 211b may be, but is not limited to, a soft portion, an elastic portion, a stretchable portion, an organic portion, an organic material portion, a damping portion, a bending portion, or a resilient portion, etc.

[0153] 3, 4, and 5B, each vibrating portion 211 of a plurality of vibrating 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 and a plurality of second portions 211b arranged alternately along a first direction (X). Each of the plurality of first portions 211a may be arranged between the plurality of second portions 211b. For example, each of the plurality of first portions 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 portions 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 have line or stripe shapes with the same or different sizes. The vibrating portion 211 shown in FIG. 5B may have a resonant frequency of 20 kHz or less due to its 2-2 composite structure. However, the resonant frequency of the vibrating portion 211 may be changed by at least one of the shape, length, and thickness of the vibrating portion 211.

[0154] 5A and 5B, the plurality of first portions 211a and the plurality of second portions 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Each of the plurality of second portions 211b may be configured to fill the gap between two adjacent first portions 211a. Each of the plurality of second portions 211b may be connected or bonded to an adjacent first portion 211a. This allows the vibration portion 211 to be expanded to a desired size or length by side-coupling (or connection) the first portions 211a and the second portions 211b.

[0155] In the vibrating part (or vibrating layer) 211 shown in Figures 5A and 5B, the widths (W2, W4) of each of the multiple second portions 211b may gradually decrease from the middle part of the vibrating part 211 or vibrating device toward both edge parts (or both sides, or both ends).

[0156] 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 in a portion where the greatest 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 in a portion where the least stress is generated 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 in 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 unit 211 or the vibrating device vibrates in the vertical direction (Z), interference of sound waves generated in the area where the greatest stress is concentrated or overlap of resonance frequencies can be minimized, thereby improving the dipping phenomenon of sound pressure generated in the low frequency range and improving the flatness of acoustic characteristics in the low frequency range. For example, the flatness of acoustic characteristics can be the magnitude of the deviation between the maximum sound pressure and the minimum sound pressure.

[0157] 5A and 5B, the plurality of first portions 211a may have different sizes (or widths). For example, the size (or width) of each of the plurality of 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 plurality of first portions 211a having different sizes, thereby improving the sound pressure characteristics of the sound and expanding the sound reproduction band.

[0158] 3, 4, and 5C, each of the vibration portions 211 of the plurality of 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 portions 211a spaced apart from one another along a first direction (X) and a second direction (Y), and second portions 211b arranged between the plurality of first portions 211a. Each of the plurality of first portions 211a may be arranged spaced apart from one another along each of the first direction (X) and the second direction (Y). For example, each of the plurality of first portions 211a may have a hexahedral shape of the same size and be arranged in a lattice shape. The second portions 211b may be arranged between the plurality of first portions 211a along each of the first direction (X) and the second direction (Y). The second portion 211b may be configured to fill the gap between two adjacent first portions 211a or surround each of the first portions 211a. Thus, the second portion 211b may be connected 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 portions 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 portions 211a. Therefore, the vibrating portion 211 shown in FIG. 5C may have a resonant frequency of 30 MHz or less by having a 1-3 composite structure. However, the resonant frequency of the vibrating portion 211 may be varied by at least one of the shape, length, and thickness of the vibrating portion 211.

[0159] 3, 4, and 5D, each vibrating portion 211 of a plurality of vibrating structures 210A, 210B, 210C, and 210D arranged in a vibration generator 210 according to another embodiment of the present disclosure may include a plurality of first portions 211a spaced apart from one another 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 circular planar structure. For example, each of the plurality of first portions 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 portion 211b may be configured to surround each of the plurality of first portions 211a. Thus, the second portion 211b may be connected or bonded to a side surface of each of the plurality of first portions 211a. The plurality of first portions 211a and second portions 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Therefore, the vibrating portion 211 shown in FIG. 5D may be realized as a circular vibration source (or vibrating body) while having a 1-3 composite structure, thereby improving vibration characteristics or acoustic output characteristics and allowing the vibrating portion 211 to have a resonant frequency of 30 MHz or less. Without being limited thereto, the resonant frequency of the vibrating portion 211 may be changed by at least one of the shape, length, and thickness of the vibrating portion 211.

[0160] 3, 4, and 5E, each vibrating portion 211 of a plurality of vibrating 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.

[0161] According to an embodiment of the present specification, four adjacent first portions 211a among the plurality of first portions 211a may be arranged adjacent to each other to form a quadrangle (or square). Each vertex of the four adjacent first portions 211a forming a quadrangle may be arranged adjacent to the center (or exact center) of the quadrangle. The second portion 211b may be configured to surround each of the plurality of first portions 211a. Thus, the second portion 211b may be connected or bonded to the side of each of the plurality of first portions 211a. The plurality of first portions 211a and the plurality of second portions 211b may be arranged (or aligned) next to each other on the same plane (or the same layer). Therefore, the vibrating portion 211 shown in FIG. 5E may have a resonant frequency of 30 MHz or less due to the 1-3 composite structure. However, the resonant frequency of the vibrating portion 211 may be changed by at least one or more of the shape, length, and thickness of the vibrating portion 211.

[0162] According to another embodiment of the present specification, as shown in FIG. 5F , six adjacent first portions 211a among the plurality of first portions 211a may be arranged adjacent to each other to form a hexagon (or regular hexagon). Each vertex of the six adjacent first portions 211a forming the hexagon may be arranged adjacent to the center (or exact center) of the hexagon. The second portion 211b may be configured to surround each of the plurality of first portions 211a. Thus, the second portion 211b may be connected or bonded to each side of the plurality of first portions 211a. The plurality of first portions 211a and the plurality of second portions 211b may be arranged (or arrayed) next to each other on the same plane (or the same layer). Therefore, the vibrating unit 211 shown in FIG. 5F may be realized as a nearly circular vibration source (or vibrating body) while having a 1-3 composite structure, thereby improving vibration characteristics or acoustic output characteristics and having a resonant frequency of 30 MHz or less. Without being limited thereto, the resonance frequency of the vibrating part 211 can be changed by at least one of the shape, length, thickness, and the like of the vibrating part 211 .

[0163] Referring to Figures 5E and 5F, 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 can be arranged adjacent to each other to form a 2N-sided polygon.

[0164] 5A to 5F, each of the plurality of first portions 211a according to the embodiments of the present specification may be composed of an inorganic material portion. The inorganic material portion may include a piezoelectric material or an electroactive material. The piezoelectric material or electroactive material has a characteristic that, when pressure or twisting occurs in the crystalline structure due to an external force, a potential difference is generated due to dielectric polarization caused by a change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field caused by an oppositely applied voltage. As described with reference to FIG. 4, the first surface of each of the plurality of first portions 211a may be electrically connected to the first electrode portion (E1), and the second surface of each of the plurality of first portions 211a may be electrically connected to the second electrode portion (E2).

[0165] 5A to 5F, the inorganic material portion of each of the first portions 211a may be composed of a ceramic-based material capable of achieving relatively high vibration, or may be composed of a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have piezoelectric and inverse piezoelectric effects and may be a plate-like structure with orientation. The perovskite crystal structure may be represented by the chemical formula ABO3, where the A site is composed of a divalent metal element and the B site is composed of a tetravalent metal element. For example, in the chemical formula 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.

[0166] The perovskite crystal structure can generate a piezoelectric effect by changing the polarization due to the displacement of the central ion, such as titanium (Ti) in the case of PbTiO3, when subjected to external stress or a magnetic field. For example, the perovskite crystal structure can generate a piezoelectric effect by changing from a symmetric cubic structure to an asymmetric structure such as a tetragonal, orthorhombic, or rhombohedral structure when subjected to external stress or a magnetic field. The high polarization at the morphotropic phase boundary of the tetragonal and rhombohedral structures, which have asymmetric structures, allows for easy polarization rearrangement, resulting in high piezoelectric properties.

[0167] 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).

[0168] The vibration unit 211 according to other embodiments of the present specification may include single crystal ceramic and / or polycrystalline ceramic. Single crystal ceramic may be a material in which grains having a single crystal image of a certain structure are regularly arranged. Polycrystalline ceramic may be composed of irregular grains in which various crystal phases (crystal domains) exist.

[0169] According to another embodiment of the present disclosure, the inorganic material portion of each of the first portions 211a may include, but is not limited to, a lead zirconate titanate (PZT)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or a lead zirconate nickel niobate (PZNN)-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, which do not include lead (Pb).

[0170] According to another embodiment of the present specification, the inorganic material portion formed in each of the plurality of first portions 211a has a piezoelectric deformation coefficient (d 33 ) can have 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, 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).

[0171] 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 +2 to +3 valent elements. By including a softer dopant material in a PZT-based material (PbZrTiO3), a morphotropic phase boundary (MPB) can be formed, thereby improving the piezoelectric and dielectric properties. 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, the ions (Sr) of the softer dopant material doped in the PZT-based material (PbZrTiO3) can be increased. 2+ , Ba 2+ , La 2+ , 5 Nd 3+ , Ca 2+ , Y 3+ , Er 3+ , Yb 3+ ) substitutes a portion of the lead (Pb) in the PZT-based material (PbZrTiO3), and the substitution amount can be 2 to 20 mol%. For example, if the substitution amount is less than 2 mol% or more than 20 mol%, the perovskite crystal structure is broken, and the electric coupling coefficient (kP) and the piezoelectric deformation coefficient (d 33 When a softer dopant substance is substituted, a morphotropic phase boundary can be formed, and high piezoelectric and dielectric properties can be obtained at the morphotropic phase boundary, thereby realizing a vibrating device with high piezoelectric and dielectric properties.

[0172] According to an embodiment of the present disclosure, a relaxor ferroelectric material doped into a PZT-based material (PbZrTiO3) can improve the electrodeformation characteristics of the inorganic material portion. The relaxor ferroelectric material according to the embodiment of the present disclosure may 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 may include lead (Pb), magnesium (Mg), and niobium (Nb), such as Pb(Mg,Nb)O3. The PNN-based material may include lead (Pb), nickel (Ni), and niobium (Nb), such as Pb(Ni,Nb)O3. For example, the relaxor ferroelectric material doped into a PZT-based material (PbZrTiO3) may partially replace zirconium (Zr) and titanium (Ti) in the PZT-based material (PbZrTiO3), with the amount of substitution ranging from 5 to 25 mol%. For example, if the substitution amount 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.

[0173] According to an embodiment of the present disclosure, the inorganic material portion of each of the first portions 211a may further include a donor material doped into the B site (ZrTi) of the PZT-based material (PbZrTiO3) to further improve the piezoelectric coefficient. For example, the donor material doped into the B site (ZrTi) may include an element with a valence of +4 to +6. For example, the donor material doped into the B site (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0174] The inorganic material portion formed in the plurality of first portions 211a according to the embodiment of the present specification has a piezoelectric deformation coefficient (d 33) can have a value of 1,000 pC / N or more, so that a vibration device with improved vibration characteristics can be realized. For example, a vibration device with improved vibration characteristics can be realized in a large-area device or vibration member.

[0175] 5A to 5F, the second portion 211b may be disposed between the plurality of first portions 211a or may be disposed to surround each of the plurality of first portions 211a. As a result, the vibration energy of the vibration unit 211 of the vibration generator 210 or the vibration device 200 due to the linkage within the unit cell of the first portion 211a can be increased by the second portion 211b, thereby improving vibration characteristics and ensuring piezoelectric characteristics and flexibility. For example, the second portion 211b may be any of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but is not limited thereto.

[0176] 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, thereby improving the durability of the vibrating portion 211 of the vibration generator 210 or the vibration device, and providing flexibility to the vibrating portion 211 of the vibration generator 210 or the vibration device.

[0177] The second portion 211b according to the embodiment of the present specification may have a lower 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 310 GPa.

[0178] The organic material portion of the second portion 211b may include an organic material, organic polymer, organic piezoelectric material, or organic non-piezoelectric material that has a more flexible or softer characteristic than the inorganic material portion of the first portion 211a. For example, the second portion 211b may be expressed as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a soft portion, but is not limited thereto.

[0179] Therefore, the vibration unit 211 of the vibration generator 210 according to various embodiments of the present specification may have the shape of a single thin film by arranging (or connecting) a plurality of first portions 211a and second portions 211b on the same plane. For example, the vibration unit 211 may vibrate in the vertical direction due to the first portion 211a having vibration characteristics, and may bend into a curved shape due to the second portion 211b having flexibility or softness. Furthermore, in the vibration unit 211 of the vibration generator 210 according to various embodiments of the present specification, the sizes of the first portion 211a and the second portion 211b may be set according to the piezoelectric characteristics and flexibility required for the vibration unit 211. For example, in the case of the vibration unit 211 where piezoelectric characteristics are required more than flexibility, the size of the first portion 211a may be configured to be larger than the size of the second portion 211b. In another embodiment of the present specification, in the case of the vibration unit 211 where flexibility is required more than piezoelectric characteristics, the size of the second portion 211b may be configured to be larger than the size of the first portion 211a. Therefore, the size of the vibrating part 211 can be adjusted according to the required characteristics, which is advantageous in that the vibrating part 211 can be easily designed.

[0180] 5A to 5F may be at least one of the vibrating parts 211 of the plurality of vibrating structures 210A, 210B, 210C, and 210D shown in Figures 3 and 4. For example, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may be realized by one or more of the vibrating parts 211 described in Figures 5A to 5F, depending on the characteristics required for the sound generated in conjunction with the vibration of the vibration device 200.

[0181] According to an embodiment of the present specification, each of the plurality of vibrating structures 210A, 210B, 210C, and 210D may include one or more vibrating parts 211 among the vibrating parts 211 described in Figures 5A to 5F, or may each include a different vibrating part 211.

[0182] According to an embodiment of the present specification, some of the plurality of vibrating structures 210A, 210B, 210C, and 210D and each of the remaining vibrating structures may include different vibrating portions 211 from each other among the vibrating portions 211 described in Figures 5A to 5F. For example, in the first to fourth vibrating structures 210A, 210B, 210C, and 210D shown in Figures 3 and 4, each of the first and second vibrating structures 210A and 210B may include one or more vibrating portions 211 from the vibrating portions 211 described in Figures 5A to 5F, and each of the third and fourth vibrating structures 210C and 210D may include different vibrating portions 211 from the vibrating portions 211 of the first and second vibrating structures 210A and 210B among the vibrating portions 211 described in Figure 5B. For example, in the first to fourth vibrating structures 210A, 210B, 210C, and 210D shown in Figures 3 and 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 5A to 5F, and the second and third vibrating structures 210B and 210C arranged in the second diagonal direction may include, of the vibrating parts 211 described in Figures 5A to 5F, vibrating parts 211 different from those of the first and fourth vibrating structures 210A and 210D arranged in the first diagonal direction.

[0183] 6 is a diagram illustrating an apparatus according to another embodiment of the present disclosure, and is a cross-sectional view taken along line II' shown in FIG.

[0184] A vibration device including one vibration generator has a problem of being unable to output sufficient sound. For example, when a vibration device including one vibration generator is configured for a display device such as a TV, it is difficult to ensure sufficient sound. Therefore, when a vibration device including two vibration generators is applied to a device, the attachment area between the display panel 100 or the vibrating member and the vibration device may become large. Due to the large attachment area, it is difficult to attach the vibration device to the back surface of the display panel 100 or the vibrating member without creating 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 encapsulation substrate without creating air bubbles. Furthermore, a vibration device implemented by attaching two vibration generators arranged side by side has a problem of split vibration, in which the vibrations between adjacent vibration generators are different from each other, generating different vibrations. This problem reduces the uniformity of acoustic characteristics. The split vibration problem increases as the attachment area of ​​the vibration device increases.

[0185] The vibration device 200 according to the embodiments 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.

[0186] The multiple vibration generators 210, 230 may be stacked and overlapped with each other so as to be displaced (or driven or vibrated) in the same direction. For example, the multiple vibration generators 210, 230 may contract or expand in the same driving direction (or displacement direction) in response to a vibration drive signal while stacked with each other, thereby increasing or maximizing the displacement amount (or bending force) or amplitude displacement. In this way, the multiple 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 range, generated by the vibration of the display panel 100 or the vibrating member. For example, the multiple vibration generators 210, 230 may be stacked and overlapped with each other so as to have the same driving direction, thereby increasing or maximizing the driving force of the multiple 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 vibrations of the multiple vibration generators 210, 230. For example, the mid-low frequency band may be, but is not limited to, 200 Hz to 1 kHz.

[0187] Each of the plurality of vibration generators 210, 230 may include, but is not limited to, a vibrating structure (or piezoelectric structure, or vibrating unit, or piezoelectric vibrating unit) including a piezoelectric ceramic having piezoelectric properties. For example, each of the plurality of vibration generators 210, 230 according to the embodiments of the present specification may include a piezoelectric ceramic having a perovskite crystal structure, thereby vibrating (or undergoing mechanical displacement) in response to an externally applied electrical signal. For example, when a vibration drive signal (or voice signal) is applied to each of the plurality of vibration generators 210, 230, the vibration generators 210, 230 alternately contract and expand due to the inverse piezoelectric effect of the vibrating structure (or piezoelectric structure, or vibrating unit, or piezoelectric vibrating unit), resulting in a bending phenomenon in which the bending direction alternates. As a result, the vibration generators 210, 230 displace (or vibrate) in the same direction as each other due to a bending phenomenon in which the bending direction alternates. This may increase or maximize the displacement (or bending force) or amplitude displacement of the vibration device 200 and / or the display panel 100 (or vibrating member).

[0188] Among the plurality of vibration generators 210, 230, the first vibration generator 210 disposed on the display panel 100 may be a main vibration generator. For example, among the plurality of 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. For example, the first vibration generator 210 may be a first vibrating film, a first displacement generator, a first displacement film, a first acoustic generator, a first vibrating array, a first vibrating array section, a first vibrating structure array section, a first vibrating array structure, a first tiling vibrating array, a first tiling vibrating array module, or a first tiling vibrating film, but is not limited thereto. For example, the second vibration generator 230 can be a second vibrating film, a second displacement generator, a second displacement film, a second acoustic generator, a second vibrating array, a second vibrating array section, a second vibrating structure array section, a second vibrating array structure, a second tiling vibrating array, a second tiling vibrating array module, or a second tiling vibrating film, but is not limited to these terms.

[0189] 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 and 230.

[0190] The connecting member 250 according to the embodiments of the present disclosure may be disposed between the plurality of vibration generators 210 and 230. For example, the connecting member 250 may be made of a material including an adhesive layer that has excellent adhesion or bonding strength to each of the plurality of vibration generators 210 and 230. For example, the connecting member 250 may include, but is not limited to, a foam pad, double-sided tape, or 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 substance (or material) that is relatively softer than acrylic. This minimizes vibration loss within the vibration device 200 due to interference between the displacements of the plurality of vibration generators 210 and 230, or allows each of the plurality of vibration generators 210 and 230 to freely displace.

[0191] Multiple vibration generators 210, 230 according to the embodiments of the present disclosure may be integrated into one structure (or component) through a lamination process using a connecting member 250.

[0192] 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.

[0193] The connecting member 150 is disposed between the display panel 100 and the vibration device 200, thereby connecting or coupling the vibration device 200 to the rear surface of the display panel 100. For example, the vibration device 200 may be connected or coupled to the rear surface of the display panel 100 via the connecting member 150, thereby being supported or disposed on the rear surface of the display panel 100.

[0194] The connecting member 150 according to the embodiments of the present specification may be made of a material including an adhesive layer with excellent adhesion or bonding strength to 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, double-sided tape, or 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 may be 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) that has relatively excellent adhesion and high hardness among acrylic and urethane so that vibrations of the vibrating device 200 can be efficiently transmitted to the display panel 100. This allows vibrations of the vibrating device 200 to be efficiently transmitted to the display panel 100.

[0195] The adhesive layer of the connecting member 150 may further include additives such as a tackifier, a wax component, or an antioxidant. The additives can prevent the connecting member 150 from being separated (or peeled) 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 phenolic antioxidant such as thioester, but are not limited thereto.

[0196] The connecting member 150 according to other embodiments 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 may minimize vibration loss by allowing sound waves (or sound pressure) caused by vibration of the vibration device 200 to be concentrated on the display panel 100 rather than being dispersed by the connecting member 150, thereby increasing the acoustic characteristics and / or sound pressure characteristics of the sound generated by the vibration of the display panel 100.

[0197] The display device according to the embodiments 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 to 2B, and therefore, a duplicate description thereof will be omitted.

[0198] The display device according to the embodiments 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 to 2B, so a duplicated description thereof will be omitted.

[0199] Fig. 7 is a diagram showing a vibration device according to another embodiment of the present specification, and Fig. 8 is a cross-sectional view taken along line III-III' shown in Fig. 7.

[0200] 7 and 8, a vibration device 200 according to another embodiment of the present disclosure can include multiple vibration generators 210, 230 and a connecting member 250. For example, the vibration device 200 can include two or more vibrating structures.

[0201] The multiple vibration generators 210, 230 may be stacked or overlapped with 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 multiple vibration generators 210, 230 may have substantially the same size as each other, but this is not a limitation. For example, the multiple vibration generators 210, 230 may have substantially the same size as each other within the tolerance of the manufacturing process, but this is not a limitation. In this way, the multiple vibration generators 210, 230 can 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 multiple vibration generators 210, 230 may be aligned with or located on an imaginary extension line (VL) extending along the thickness direction (Z) of the display panel 100.

[0202] According to the embodiments of the present specification, if the displacement directions and amplitude displacements 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, if at least one of the multiple vibration generators 210, 230 has a different size beyond the tolerance range of the manufacturing process, the displacement directions and amplitude displacements of the multiple vibration generators 210, 230 do not match each other, and the amplitude displacement of the vibration device 200 cannot be maximized. Furthermore, if at least one of the multiple vibration generators 210, 230 displaces in a different direction, the displacement directions of the multiple vibration generators 210, 230 do not match each other, and the amplitude displacement of the vibration device 200 cannot be maximized.

[0203] The vibration device 200 according to the embodiment of the present specification may include two or more vibration generators 210, 230 stacked so as to displace in the same direction. In the following description, it will be assumed that the vibration device 200 includes first and second vibration generators 210, 230.

[0204] According to an embodiment of the present specification, the first vibration generator 210 may be connected to 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 on or adhered to the first vibration generator 210 via a connecting member 250 (or a third connecting member).

[0205] 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 .

[0206] The vibrating unit 211 may include a piezoelectric material (or piezoelectric element) having piezoelectric properties (or piezoelectric effect). For example, a piezoelectric material may have the property that when pressure or twisting is applied to a crystalline structure by an external force, a potential difference is generated by dielectric polarization due to a change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field due to an inversely applied voltage. For example, the vibrating structure 211 may be expressed by terms such as a piezoelectric vibrating unit, piezoelectric vibrating layer, displacement unit, piezoelectric displacement unit, piezoelectric displacement layer, sound wave generating unit, vibration layer, piezoelectric material layer, piezoelectric composite layer, electroactive layer, piezoelectric material unit, piezoelectric composite unit, electroactive unit, piezoelectric structure, piezoelectric composite, or piezoelectric ceramic composite, but is not limited to these terms.

[0207] The vibrating part 221 according to an embodiment of the present specification may include a vibrating layer 221a containing a piezoelectric material, a first electrode part 221b arranged on a first surface of the vibrating layer 221a, and a second electrode part 221c arranged on a second surface opposite to the first surface of the vibrating layer 221a.

[0208] 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 vibration section, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibration section, a piezoelectric vibration layer, a piezoelectric composite, a displacement section, a piezoelectric displacement section, a piezoelectric displacement layer, a sound wave generating section, a piezoelectric material section, or an electroactive section.

[0209] The vibration layer 221a may be made of a transparent, semi-transparent, or opaque piezoelectric material, and therefore may be transparent, semi-transparent, or opaque. The vibration layer 221a is substantially the same as the vibration unit 211 described with reference to Figures 5A to 5F, and therefore a repeated description thereof will be omitted.

[0210] The vibration layer 221a according to the embodiments of the present specification may be configured in a circular, elliptical, or polygonal shape, but is not limited thereto.

[0211] The first electrode unit 221b may be disposed on a first surface (or upper surface) of the vibration layer 221a. The second electrode unit 221c may be disposed on a second surface (or rear surface) opposite to the first surface of the vibration layer 221a. The first electrode unit 221b and the second electrode unit 221c are substantially the same as the first electrode unit (E1) and the second electrode unit (E2) described with reference to FIGS. 3 and 4, and therefore, redundant description thereof will be omitted or simplified.

[0212] According to an embodiment of the present specification, the first electrode unit 221b may have the same shape as the vibration layer 221a, but is not limited to this. For example, the second electrode unit 221c may have the same shape as the vibration layer 221a, but is not limited to this.

[0213] In each of the first and second vibration generators 210, 230, the first electrode unit 221b may be disposed closer to the display panel 100 than the second electrode unit 221c, but is not limited to this. 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 unit 221b of each of the plurality of vibration generators 210, 230 may be disposed closer to the display panel 100 than the second electrode unit 221c.

[0214] The vibration layer 221a may be polarized (or subjected to a polling treatment) by a constant voltage applied to the first electrode unit 221b and the second electrode unit 221c in a constant temperature atmosphere or in a temperature atmosphere that changes from high temperature to room temperature, but is not limited to this. 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 acoustic signal or voice signal) applied from the outside to the first electrode unit 221b and the second electrode unit 221c.

[0215] The vibrating part 221 (or vibrating layer 221a) of the first vibration generator 210 may have the same size as the vibrating part 221 (or vibrating 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 vibrating part 221 (or vibrating layer 221a) of the first vibration generator 210 may substantially overlap or be superimposed on the vibrating part 221 (or vibrating layer 221a) of the second vibration generator 230 without any misalignment. For example, the vibrating part 221 (or vibrating layer 221a) of the first vibration generator 210 may substantially overlap or be superimposed on the vibrating part 221 (or vibrating layer 221a) of the second vibration generator 230 without any misalignment within the tolerance range of the manufacturing process. For example, the vibrating section 221 (or vibrating layer 221a) of the first vibration generator 210 and the vibrating section 221 (or vibrating layer 221a) of the second vibration generator 230 are realized in a laminated structure in which they have the same size and are stacked without any misalignment, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device 200. For example, the vibrating section 221 (or vibrating layer 221a) of the first vibration generator 210 and the vibrating section 221 (or vibrating layer 221a) of the second vibration generator 230 are realized in a laminated structure in which they have the same size and are precisely stacked without any misalignment, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device 200.

[0216] According to an embodiment of the present specification, the first portion (or tip, outer surface, or each corner portion) 210a of each vibrating portion 221 (or vibrating layer 221a) of the first vibration generator 210 may be aligned with or located on the imaginary extension line (VL). For example, the first portion (or tip, outer surface, or each corner portion) 210a of each vibrating portion 221 (or vibrating layer 221a) of the first vibration generator 210 may be precisely aligned with or located on the imaginary extension line (VL). The second portion (or tip, outer surface, or each corner portion) 230a of each vibrating portion 221 (or vibrating layer 221a) of the second vibration generator 230 may be aligned with or located on the imaginary extension line (VL). For example, the second portions (or tips, or outer surfaces, or corner portions) 230a of the vibrating portion 221 (or vibrating layer 221a) of the second vibration generator 230 can be precisely aligned with or precisely located on the imaginary extension line (VL). The first portions 210a of the vibrating portion 221 (or vibrating layer 221a) of the first vibration generator 210 can be aligned with or overlap the second portions 230a of the vibrating portion 221 (or vibrating layer 221a) of the second vibration generator 230. For example, the first portions 210a of the vibrating portion 221 (or vibrating layer 221a) of the first vibration generator 210 can be precisely aligned with or overlap the second portions 230a of the vibrating portion 221 (or vibrating layer 221a) of the second vibration generator 230. For example, the first portions 210a of the vibrating unit 221 (or vibrating layer 221a) of the first vibration generator 210 may correspond to the second portions 230a of the vibrating unit 221 (or vibrating layer 221a) of the second vibration generator 230. Therefore, in the vibration device 200 according to the embodiment of the present specification, the vibrating unit 221 (or first vibrating unit) of the first vibration generator 210 and the vibrating unit 221 (or second vibrating unit) of the second vibration generator 230 are displaced in the same direction, thereby maximizing or increasing the displacement amount or amplitude displacement. This allows the displacement amount (or bending force) or amplitude displacement of the display panel 100 to be increased (or maximized).

[0217] 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 portion 221c. The second protective member 215 may protect the second electrode portion 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 a different 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 a connecting member 150 (or a first connecting member). For example, the first protection member 213 of the first vibration generator 210 may be connected or coupled to the rear surface of the display panel 100 via the connection member 150 (or the first connection member).

[0218] In the second vibration generator 230, the first protective member 213 may be disposed on the first electrode portion 221b. The first protective member 213 may protect the first electrode portion 221b. The second protective member 215 may be disposed on the second electrode portion 221c. The second protective member 215 may protect the second electrode portion 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 a different 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 rear 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 .

[0219] 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 made of a polyimide film or a polyethylene terephthalate film, but are not limited thereto.

[0220] One or more of the first and second vibration generators 210, 230 according to embodiments herein may further include a first adhesive layer 212 and a second adhesive layer 214.

[0221] In the first vibration generator 210, the first adhesive layer 212 may be disposed between the vibrating unit 221 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode unit 221b of the vibrating unit 221 and the first protective member 213. The first protective member 213 may be disposed on the first surface of the vibrating unit 221 (or the first electrode unit 221b) via the first adhesive layer 212. For example, the first protective member 213 may be bonded or connected to the first surface of the vibrating unit 221 (or the first electrode unit 221b) by a film lamination process using the first adhesive layer 212 as an intermediary.

[0222] In the first vibration generator 210, the second adhesive layer 214 may be disposed between the vibrating unit 221 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode unit 221c of the vibrating unit 221 and the second protective member 215. The second protective member 215 may be disposed on the second surface of the vibrating unit 221 (or the second electrode unit 221c) via the second adhesive layer 214. For example, the second protective member 215 may be bonded or connected to the second surface of the vibrating unit 221 (or the second electrode unit 221c) by a film lamination process using the second adhesive layer 215 as an intermediary.

[0223] 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. As a result, in the first vibration generator 210, the vibrating unit 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 vibrating unit 221 of the first vibration generator 210. For example, the first adhesive layer 212 and the second adhesive layer 214 may be expressed as, but are not limited to, a cover member. 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.

[0224] In the second vibration generator 230, the first adhesive layer 212 may be disposed between the vibrating unit 221 and the first protective member 213. For example, the first adhesive layer 212 may be disposed between the first electrode unit 221b of the vibrating unit 221 and the first protective member 213. The first protective member 213 may be disposed on the first surface of the vibrating unit 221 (or the first electrode unit 221b) via the first adhesive layer 212. For example, the first protective member 213 may be bonded or connected to the first surface of the vibrating unit 221 (or the first electrode unit 221b) by a film lamination process using the first adhesive layer 212 as an intermediary.

[0225] In the second vibration generator 230, the second adhesive layer 214 may be disposed between the vibrating portion 221 and the second protective member 215. For example, the second adhesive layer 214 may be disposed between the second electrode portion 221c of the vibrating portion 221 and the second protective member 215. The second protective member 215 may be disposed on the second surface of the vibrating portion 221 (or the second electrode portion 221c) via the second adhesive layer 214. For example, the second protective member 215 may be bonded or connected to the second surface of the vibrating portion 221 (or the second electrode portion 221c) by a film lamination process using the second adhesive layer 215 as an intermediary.

[0226] 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. Thus, in the second vibration generator 230, the vibrating unit 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 vibrating unit 221 of the second vibration generator 230. For example, the first adhesive layer 212 and the second adhesive layer 214 may be expressed as, but are not limited to, a cover member. 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.

[0227] 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 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, epoxy resin, acrylic resin, silicone resin, or urethane resin.

[0228] 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.

[0229] 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 to this. The first power supply line (PL1) may be disposed on the first protective member 213 and electrically connected to the first electrode unit 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 unit 221b and electrically connected to the first electrode unit 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 unit 212b and directly electrically connected to the first electrode unit 221b. For example, the first power supply line (PL1) may be electrically connected to the first electrode unit 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 portion 221b through a conductive material (or particles) contained in the first adhesive layer 212.

[0230] 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) intersecting the second direction (Y). The at least one first power line may extend 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 be electrically connected to the first electrode unit 221b. As a result, the at least one first power line may improve the uniformity of the vibration driving signal applied to the first electrode unit 221b.

[0231] 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 portion 221c. For example, the second power supply line (PL2) may be disposed on a rear surface of the second protective member 215 facing the second electrode portion 221c and electrically connected to the second electrode portion 221c. For example, the second power supply line (PL2) may be disposed on a rear surface of the second protective member 215 directly facing the second electrode portion 221c and electrically connected directly to the second electrode portion 221c. For example, the second power supply line (PL2) may be electrically connected to the second electrode portion 221c 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 portion 221c via a conductive material (or particles) contained in the second adhesive layer 214.

[0232] 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 extend 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 be electrically connected to the second electrode unit 221c. The at least one second power line may overlap and be superimposed on at least one first power line. As a result, the at least one second power line may improve the uniformity of the vibration drive signal applied to the second electrode unit 221c.

[0233] The pad portion 217 may be electrically coupled to a first portion (or one side portion, or one end) of one or more of the first power supply line (PL1) and the second power supply line (PL2). For example, the pad portion 217 may be disposed at a first end portion of one or more of the first protective member 213 and the second protective member 215. The pad portion 217 may be disposed at a first edge portion of one or more of the first protective member 213 and the second protective member 215. The pad portion 217 may be electrically coupled to a first portion (or one side portion, or one end) of one or more of the first power supply line (PL1) and the second power supply line (PL2).

[0234] 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 protection member 213 and the second protection member 215.

[0235] One or more of the first vibration generator 210 and the second vibration generator 230 according to embodiments herein may further include a signal cable 219 .

[0236] The signal cable 219 may be electrically coupled to the pad portion 219 arranged on one or more of the first vibration generator 210 and the second vibration generator 230. This allows the signal cable 219 to supply a vibration drive signal (or an acoustic signal) provided from the vibration drive circuit to the corresponding vibration portion 221. The signal cable 219 according to the embodiments of the present specification may include a first terminal and a second terminal. The first terminal of the signal cable 219 may be electrically coupled to a first pad electrode of the pad portion 217. The second terminal of the signal cable 219 may be electrically coupled to a second pad electrode of the pad portion 217. For example, the signal cable 219 may be formed of, but is not limited to, a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board. For example, the signal cable 219 may be transparent, translucent, or opaque.

[0237] The vibration drive circuit (or acoustic processing circuit) can generate AC vibration drive signals 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 (+) vibration drive signal or a negative (-) vibration drive signal, and the second vibration drive signal can be either a positive (+) vibration drive signal or a negative (-) vibration drive signal. As an example of the present specification, the first vibration drive signal can be supplied to the first electrode portion 221b of the vibration portion 221 via a first terminal of the signal cable 219, a first pad electrode of the pad portion 217, and a first power supply line (PL1). The second vibration drive signal can be supplied to the second electrode portion 221c of the vibration portion 221 via a second terminal of the signal cable 219, a second pad electrode of the pad portion 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 portion 221c of the vibrating portion 221 via the first terminal of the signal 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 portion 221b of the vibrating portion 221 via the second terminal of the signal cable 219, the first pad electrode of the pad portion 217, and the first power supply line (PL1).

[0238] The connecting member 250 according to the embodiments 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 vibration generators 210, 230. For example, the connecting member 250 may include a foam pad, double-sided tape, 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.

[0239] 7 and 8 and the related description, the vibration device 200 according to the embodiment of the present specification includes the first vibration generator 210, the second vibration generator 230, and the connecting member 250 disposed between the first vibration generator 210 and the second vibration generator 210, 230. However, the present specification is not limited to this example. For example, the vibration device 200 according to the embodiment of the present specification may include multiple (e.g., three or more) vibration generators 210, 230 and the connecting member 250 disposed between the multiple vibration generators 210, 230 depending on 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 multiple vibration generators 210, 230 may have the same size and overlap each other to maximize or increase the displacement amount or amplitude displacement of the vibration device 200. For example, the first and second portions (or tips, or outer surfaces, or corner portions) 210a, 230a of each of one or more vibrating portions 221 (or vibrating layers 221a) of the plurality of vibration generators 210, 230 may substantially overlap or be superimposed on one another without any misalignment. For example, the first and second portions (or tips, or outer surfaces, or corner portions) 210a, 230a of each of one or more vibrating portions 221 (or vibrating layers 221a) of the plurality of vibration generators 210, 230 may substantially overlap or be superimposed on one another without any misalignment within the tolerance range of the manufacturing process. For example, the first and second portions (or tips, or outer surfaces, or corner portions) 210a, 230a of each of the vibrating portions 221 (or vibrating layers 221a) of the plurality of vibration generators 210, 230 may be aligned with or located on the imaginary 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).

[0240] FIG. 9 is another cross-sectional view taken along line II-II' shown in FIG.

[0241] 3 and 9, in a 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 vibrating structures 210A, 210B, 210C, and 210D, or a plurality of vibrating structures 210A, 210B, 210C, and 210D. While Fig. 9 shows an example in which four vibrating structures are included, each of the first vibration generator 210 and the second vibration generator 230 according to an embodiment of the present specification can be composed of two or more vibrating structures.

[0242] The plurality of vibrating structures 210A, 210B, 210C, and 210D may be arranged electrically isolated from one another along the first direction (X) and the second direction (Y).

[0243] Each of the plurality of vibrating 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 vibrating structures 210A, 210B, 210C, and 210D can be arranged at regular intervals along each of the first direction (X) and the second direction (Y), or can be tiled. Thus, each of the first vibration generator 210 and the second vibration generator 230, in which the plurality of vibrating structures 210A, 210B, 210C, and 210D are tiled, can be a vibrating array, a vibrating array section, a vibrating module array section, a vibrating array structure, a tiling vibrating array, a tiling vibrating array module, or a tiling vibrating film, but is not limited to these terms. The description of the plurality of vibrating structures 210A, 210B, 210C, and 210D is substantially the same as that described with reference to FIGS. 3 and 4, and therefore, redundant description thereof will be omitted or simplified.

[0244] Each of the first to fourth vibrating structures 210A, 210B, 210C, and 210D according to the embodiments of the present specification may include a vibrating unit 221. The vibrating unit 221 may include a vibrating layer 221a, a first electrode unit 221b, and a second electrode unit 221c. The description of the vibrating layer 221a, the first electrode unit 221b, and the second electrode unit 221c is the same as that described with reference to Figures 3, 4, 7, and 8, so redundant description thereof will be omitted or simplified.

[0245] The vibration layer 221a may be made of a ceramic-based material capable of achieving relatively high vibration. For example, the vibration layer 221a may have a 1-3 composite structure having piezoelectric characteristics of a 1-3 vibration mode, or a 2-2 composite structure having piezoelectric characteristics of a 2-2 vibration mode. For example, the vibration layer 221a may be the same as the vibration unit 211 described in FIGS. 3 and 4 or may include a first portion 211a and a second portion 211b similar to the vibration unit 211 described in FIGS. 5A to 5F.

[0246] 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 a first surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D via a first adhesive layer 1212. The second protective member 1215 may be commonly disposed on a second surface of each 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 with reference to FIGS. 3, 4, 7, and 8, and therefore, a repeated description thereof will be omitted.

[0247] The first adhesive layer 1212 may be disposed on a first surface of each 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 1212 may be disposed on a back surface (or inner surface) of the first protective member 1213 that faces 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 a first surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D and filled between the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0248] The second adhesive layer 1214 may be disposed on the second surface of each 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 1214 may be disposed on a front surface (or an inner surface) of the second protective member 1215 that faces the second surface of each 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 surface of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D and filled between the plurality of vibrating structures 210A, 210B, 210C, and 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. 3, 4, 7, and 8, and therefore a repeated description thereof will be omitted.

[0249] 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.

[0250] 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 portion 221b of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the first power supply line (PL1) may be electrically connected directly to the first electrode portion 221b of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. In one embodiment of the present specification, the first power supply line (PL1) may be electrically connected to the first electrode portion 221b of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D via 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 portions 221b of the plurality of vibration structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the first adhesive layer 1212.

[0251] The first power supply line (PL1) according to the embodiment of the present specification may include a first-1 upper power line (PL11) and a first-2 upper power line (PL12) arranged along the second direction (Y). For example, the first-1 upper power line (PL11) may be electrically connected to the first electrode parts 221b of the first and third vibrating structures 210A and 210C (or a first group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the first and third vibrating structures 210A and 210C may be arranged in a first row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D. The first-2 upper power line (PL12) may be electrically connected to the first electrode parts 221b of the second and fourth vibrating structures 210B and 210D (or a second group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the second and fourth vibrating structures 210B and 210D may be arranged in a second row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0252] The second power supply line (PL2) may be arranged on the second protection member 1215. For example, the second power supply line (PL2) may be arranged on a first surface of the second protection 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 protection member 1215 may be the lower surface of the second protection member 1215. The second power supply line (PL2) may be electrically connected to the second electrode portion 221c of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the second power supply line (PL2) may be directly electrically connected to the second electrode portion 221c of each of the plurality of 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 portion 221c of each of the plurality of vibrating 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 portion 221c of each of the plurality of vibrating structures 210A, 210B, 210C, and 210D via a conductive material (or particles) contained in the second adhesive layer 1214.

[0253] The second power supply line (PL2) according to the embodiment of the present specification may include a second-1st lower power line (PL21) and a second-2nd lower power line (PL22) arranged along the second direction (Y). For example, the second-1st lower power line (PL21) may be electrically connected to the second electrode portions 221c of the first and third vibrating structures 210A and 210C (or a first group) of the plurality of vibrating structures 210A, 210B, 210C, and 210D that are parallel to the second direction (Y). For example, the first and third vibrating structures 210A and 210C may be arranged in a first row of the plurality of vibrating structures 210A, 210B, 210C, and 210D that are parallel to the second direction (Y). The 2-2 lower power line (PL22) may be electrically connected to the second electrode parts 221c of the second and fourth vibrating structures 210B and 210D (or a second group) parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D. For example, the second and fourth vibrating structures 210B and 210D may be arranged in a second row parallel to the second direction (Y) among the plurality of vibrating structures 210A, 210B, 210C, and 210D.

[0254] The pad portion 217 may be electrically connected to the first power supply line (PL1) and the second power supply line (PL2). For example, the pad portion 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 a portion (or one end) of at least one of the first power supply line (PL1) and the second power supply line (PL2).

[0255] The pad part 217 according to the embodiment of the present specification may include a first pad electrode electrically connected to a portion of the first power supply line (PL1) and a second pad electrode electrically connected to a portion of the second power supply line (PL2).

[0256] The first pad electrode may be commonly connected to a portion (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, a portion (or one end) of each of the 1-1 and 1-2 upper power lines (PL11, PL12) may branch off from the first pad electrode.

[0257] The second pad electrode may be commonly connected to a portion (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, a portion (or one end) of each of the 2-1 and 2-2 lower power lines (PL21, PL22) may branch off from the second pad electrode.

[0258] 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.

[0259] 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 signal cable 219 .

[0260] The signal cable 219 is electrically coupled to the pad portion 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 signal cable 219 according to the embodiment of the present specification may include a first terminal and a second terminal. The first terminal of the signal cable 219 may be electrically coupled to a first pad electrode of the pad portion 217. The second terminal of the signal cable 219 may be electrically coupled to a second pad electrode of the pad portion 217. For example, the signal cable 219 may be formed of, but is not limited to, a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board. For example, the signal cable 219 may be transparent, translucent, or opaque.

[0261] Therefore, a vibration device 200 according to another embodiment of the present specification includes a plurality of vibrating 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 a single vibrating body. This allows the plurality of vibrating structures 210A, 210B, 210C, and 210D to vibrate independently as a single vibrating body. For example, the plurality of vibrating structures 210A, 210B, 210C, and 210D may be arranged (or tiled) at regular intervals (D1, D2) as a single vibrating body. This allows the vibration device 200 to vibrate a wide area of ​​the display panel or the display panel itself over a wide area, thereby increasing or improving the acoustic characteristics and sound pressure characteristics in the reproduction band and the low-frequency band of the sound output from the display panel.

[0262] FIG. 10 is a diagram illustrating the vibration unit shown in FIG.

[0263] 10, a 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 alternately and repeatedly arranged along the second direction (Y) (or the first direction (X)). For example, the first direction (X) may be the horizontal direction of the vibration layer 221a. The second direction (Y) may be the vertical 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 vertical direction of the vibration layer 221a, and the second direction (Y) may be the horizontal direction of the vibration layer 221a. For example, the first portion 221a1 may be a piezoelectric part, a piezoelectric body, an inorganic part, an inorganic material part, a piezoelectric layer, a vibration layer, a displacement layer, or a displacement body, but is not limited to these terms. For example, the second portion 221a2 may be a soft portion, an elastic portion, a stretchable portion, an organic portion, an organic material portion, a damping portion, a bending portion, or a resilient portion, but is not limited to these terms.

[0264] Each of the plurality of first portions 221a1 may be made of an inorganic material. The inorganic material may include the inorganic materials described above. For example, each of the plurality of first portions 221a1 may be made of substantially the same material as the vibration portion 211 described with reference to FIGS. 5A to 5F, and therefore, a redundant description thereof will be omitted.

[0265] Each of the plurality of first portions 221a1 according to the embodiment of the present specification may be disposed between the plurality of second portions 221a2. The plurality of first portions 221a1 and the plurality of second portions 221a2 are substantially the same as the plurality of first portions 211a and the plurality of second portions 211b described in Figures 5A to 5F, and therefore a redundant description thereof will be omitted.

[0266] The vibrating portion 221 of the first vibration generator 210 and the vibrating portion 221 of the second vibration generator 230 may have the same size and overlap each other 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 vibrating portion 221 (or vibration layer 221a) of the first vibration generator 210 may be substantially aligned with or overlapped with the second portion (or tip, or outer surface, or each corner portion) 230a of each of the vibrating portion 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 each of the vibrating portions 221 (or vibrating 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 vibrating portions 221 (or vibrating layer 221a) of the second vibration generator 230 without any misalignment within the tolerance range of the manufacturing process. For example, the first portion (or tip, or outer surface, or each corner portion) 210a of each of the vibrating portions 221 (or vibrating layer 221a) of the first vibration generator 210 may be aligned with or located on a virtual first extension line (VL1). Each first portion (or tip, outer surface, or corner portion) 210a of the vibrating portion 221 (or vibrating layer 221a) of the first vibration generator 210 may be precisely aligned with or precisely located on the imaginary first extension line (VL1). Each second portion (or tip, outer surface, or corner portion) 230a of the vibrating portion 221 (or vibrating layer 221a) of the second vibration generator 230 may be precisely aligned with or precisely located on the first extension line (VL1). For example, each second portion (or tip, outer surface, or corner portion) 230a of the vibrating portion 221 (or vibrating layer 221a) of the second vibration generator 230 may be precisely aligned with or precisely located on the first extension line (VL1).

[0267] According to an embodiment of the present specification, the plurality of first portions 221a1 of the first vibration generator 210 and the plurality of first portions 221a1 of the second vibration generator 230 may have the same size and substantially overlap or be superimposed on each other. For example, the plurality of first portions 221a1 of the first vibration generator 210 and the plurality of first portions 221a1 of the second vibration generator 230 may have the same size and substantially overlap or be superimposed on each other without any misalignment. According to an embodiment of the present specification, the first portion (or tip, or outer surface, or each corner portion) of each of the plurality of first portions 221a1 of the first vibration generator 210 may substantially overlap or be superimposed on the first portion (or tip, or outer surface, or each corner portion) of each of the plurality of first portions 221a1 of the second vibration generator 230. 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 may substantially overlap or be superimposed 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. 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 may be aligned 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 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) or precisely positioned on 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.

[0268] According to an embodiment of the present specification, the second portions 221a2 of the first vibration generator 210 may have the same size as the second portions 221a2 of the second vibration generator 230 and may substantially overlap or be superimposed on each other. For example, the second portions 221a2 of the first vibration generator 210 may have the same size as the second portions 221a2 of the second vibration generator 230 and may substantially overlap or be superimposed on each other without any misalignment. According to an embodiment of the present specification, the first portion 210a (or the tip, or the outer surface, or each corner portion) of each of the second portions 221a2 of the first vibration generator 210 may substantially overlap or be superimposed on the first portion 230a (or the tip, or the outer surface, or each corner portion) of each of the second portions 221a2 of the second vibration generator 230. For example, the first portion 210a (or tip, or outer surface, or each corner portion) of each of the plurality of second portions 221a2 of the first vibration generator 210 may substantially overlap or be superimposed without any misalignment with the first portion 230a (or tip, or outer surface, or each corner portion) of each of the plurality of second portions 221a2 of the second vibration generator 230. For example, the first portion 210a (or tip, or outer surface, or each corner portion) of each of the plurality of second portions 221a2 of the first vibration generator 210 may be aligned with the first portion 230a (or tip, or outer surface, or each corner portion) of each of the plurality of 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 precisely aligned with or positioned precisely on the second extension line (VL2) without any misalignment 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. 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, thereby maximizing or increasing the displacement amount or amplitude displacement, and thereby increasing (or maximizing) the displacement amount (or bending force) or amplitude displacement of the display panel 100.

[0269] 10 and the related description, 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 multiple (e.g., three or more) vibration generators 210, 230. In this case, the multiple vibration generators 210, 230 may have the same size and be overlapped with each other to maximize or increase the displacement or amplitude displacement of the vibration device 200. According to an 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 substantially overlapped 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 among the three or more vibration generators 210, 230 may substantially overlap or be superimposed on each other without any misalignment. 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 among the three or more vibration generators 210, 230 may be precisely aligned with or located on the virtual extension line (VL). Furthermore, 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 substantially overlap and be superimposed on 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 substantially overlap and be superimposed on each other without any misalignment.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 the imaginary 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 exactly aligned with or located on the imaginary extension line (VL).

[0270] 11 is a diagram showing an apparatus according to another embodiment of the present disclosure, and FIG. 12 is a cross-sectional view taken along line IV-IV' shown in FIG.

[0271] 11 and 12, 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 midline (CL) of the display panel 100 in the first direction (X), but are not limited to this. For example, each of the first and second regions (A1, A2) may overlap the display region of the display panel.

[0272] 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. For example, the first vibration device 210-1 may be a first vibration generating device, a first displacement device, a first sound generating device, or a first sound generating device, but is not limited to these terms. For example, the second vibration device 210-2 may be a second vibration generating device, a second displacement device, a second sound generating device, or a second sound generating device, but is not limited to these terms.

[0273] 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 of 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 vibrate the first region (A1) of the display panel 100 to generate a first vibration sound (PVS1) or a first haptic feedback in 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 directly vibrate the first region (A1) of the display panel 100 to generate a first vibration sound (PVS1) or a first haptic feedback in the first region (A1) of the display panel 100. For example, the first vibration sound (PVS1) may be a left-side 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 first vibrating sound (PVS1) or the acoustic characteristics required of the device. In another embodiment of the present specification, the size of the first vibrating device 210-1 may correspond 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).

[0274] 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 of the second region (A2) of the display panel 100 based on 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 second vibratory sound (PVS2) or a second 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 second vibratory sound (PVS2) or a second haptic feedback in the second region (A2) of the display panel 100. For example, the second vibratory sound (PVS2) may be a right-side sound. The size of the second vibrating device 210-2 according to the embodiments of the present specification may be less than or more than half the size of the second area (A2) depending on the characteristics of the second vibrating sound (PVS2) or the acoustic characteristics required of the device. In another embodiment of the present specification, the size of the second vibrating device 210-2 may correspond to the size of the second area (A2) of the display panel 100. For example, the size of the second vibrating device 210-2 may be the same as or smaller than the second area (A2) of the display panel 100. Therefore, the first and second vibrating devices 210-1 and 210-2 may have the same size or different sizes depending on the acoustic characteristics of the left and right sides of the device and / or the acoustic characteristics of the device. The first and second vibrating devices 210-1 and 210-2 may be arranged in a symmetrical or asymmetrical structure around the midline (CL) of the display panel 100.

[0275] 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. 2A to 5F, and therefore, a redundant description thereof will be omitted.

[0276] The connecting member 150 according to the embodiments 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 redundant description thereof will be omitted.

[0277] A display device according to an embodiment of the present specification may further include a plurality of holes 301. For example, the plurality of holes 301 may overlap each of the first vibrating device 210-1 and the second vibrating device 210-2. For example, the plurality of holes 301 may be arranged along one or more of a first direction (X) of each of the first vibrating device 210-1 and the second vibrating device 210-2 and a second direction (Y) intersecting the first direction (X). For example, the plurality of holes 301 may be smaller than the size of the vibrating device 200. For example, the description of the plurality of holes 301 is the same as or similar to the description of FIGS. 1 to 2B, and therefore, a repeated description thereof will be omitted.

[0278] Therefore, the device according to another embodiment of the present specification can provide sound to the user by outputting left sound (PVS1) and right sound (PVS2) to the front of the display panel 100 via the first vibration device 210-1 and the second vibration device 210-2. Furthermore, by forming holes 301 in support member 300, it is possible to provide a device that can improve the acoustic characteristics and / or sound pressure characteristics in the low frequency range.

[0279] Figure 13 is another cross-sectional view taken along line IV-IV' in Figure 11. Figure 13 shows an arrangement in which a plate is added to the device shown in Figure 12. Therefore, in the following, redundant descriptions of the remaining components excluding the plate and its related components will be omitted or simplified.

[0280] Referring to FIG. 13, a device according to another embodiment of the present disclosure includes 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.

[0281] 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. 2A to 5F, respectively, and therefore, redundant description thereof will be omitted or simplified.

[0282] 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.

[0283] The plate 170 may dissipate heat generated from the display panel 100 or reinforce the mass of the first vibrating device 210-1 and the second vibrating device 210-2 disposed on or suspended from the rear surface of the display panel 100. The plate 170 may 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 disclosure, the plate 170 may have a different size from the display panel 100. For example, the plate 170 may be smaller than the display panel 100. In another embodiment of the present disclosure, the plate 170 may have a different size from the vibrating device 200. For example, the plate 170 may be larger or smaller than the vibrating device 200. The vibrating device 200 may be the same size as or smaller than the display panel 100.

[0284] The plate 170 according to the embodiment of the present disclosure may include a metallic material or a non-metallic material, such as, but not limited to, stainless steel, aluminum (Al), magnesium (Mg), a magnesium (Mg) alloy, a magnesium-lithium (Mg-Li) alloy, and an aluminum (Al) alloy.

[0285] The plate 170 according to the embodiments 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 may minimize vibration loss by the plate 170 and increase the sound pressure characteristics of the sound generated by the vibration of the display panel 100 by concentrating the sound waves (or sound pressure) generated by the vibration of the vibrating device 200 on the display panel 100 rather than dispersing the sound waves. 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.

[0286] According to the embodiment of the present specification, the plate 170 may be connected or coupled to the rear surface of the display panel 100. For example, if the display panel 100 is a light-emitting display panel, the plate 170 may be disposed on the rear surface of the encapsulation unit (or 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 as 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 to these terms.

[0287] According to an embodiment of the present specification, the plate 170 may be disposed on the rear surface of the display panel 100 or may reinforce the mass of the vibration device 200 suspended therefrom. 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 and sound pressure characteristics of the low-frequency range of the sound generated in conjunction with the vibration of the vibration device 200, thereby improving 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 to these terms.

[0288] According to the embodiments of the present specification, the displacement amount (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 decrease.

[0289] 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 .

[0290] The connecting member 190 according to the embodiment of the present disclosure 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, double-sided tape, or 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) that has relatively excellent adhesion and high hardness among acrylic and urethane so that vibrations of the vibrating device 200 can be efficiently transmitted to the display panel 100. In another embodiment of the present disclosure, the adhesive layer of the connecting member 190 may be configured differently from the adhesive layer of the connecting member 150.

[0291] The vibration device 200 can be supported or hung on the back surface of the plate 170 by being connected or coupled to the back surface of the plate 170 via the above-mentioned coupling members 150. 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 back surface of the plate 170 by being connected or coupled to the back surface of the plate 170 via the above-mentioned coupling members 150.

[0292] The plate 170 according to the embodiments 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 a single structure or a single component (or module) having a single body. 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 the components between the plate 170 and the vibration device 200.

[0293] According to another embodiment of the present specification, when the plate 170 and the vibration device 200 are configured as a single structure or a single component (or module) comprising a single fuselage, the hidden panel may be configured as a vibrating plate. The plate 170 and the vibration device 200 may be disposed on the hidden panel. The plate 170 and the vibration device 200 may be coupled or connected to each other via a connecting member 150. For example, the hidden panel may be made of wood, plastic, glass, cloth, paper, leather, automobile interior materials, building interior ceilings, and aircraft interior materials, but is not limited to this term. Therefore, the hidden panel may vibrate to output sound. According to another embodiment of the present specification, when the plate 170 and the vibration device 200 are configured as a single structure or a single component (or module) comprising a single fuselage, the plate 170 may be configured as a vibrating plate. For example, 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 structure (or structure) of plate 170 and vibration device 200, plate 170 may be made of any one or more of the following single or composite non-metallic materials, but is not limited to: wood, plastic, glass, cloth, paper, and leather.

[0294] Therefore, the device according to another embodiment of the present specification can provide sounds to a user by outputting left sound (PVS1) and right 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, the device according to another embodiment of the present specification can reduce the resonance frequency of the vibrating device 200 by the plate 170, and can dissipate heat from the display panel 100 by the plate 170.

[0295] Figure 14 is another cross-sectional view taken along line IV-IV' shown in Figure 11. Figure 15 is another cross-sectional view taken along line IV-IV' shown in Figure 14. Figure 15 shows the device shown in Figure 14 configured by adding a plate.

[0296] 14 and 15 , 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 may be a first vibration generator, a first displacement device, a first sound generator, or a first sound generator, but is not limited to these terms. For example, the second vibration device 220-2 may be a second vibration generator, a second displacement device, a second sound generator, or a second sound generator, but is not limited to these terms. 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. 6 to 10. 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. 6 to 10, respectively, and therefore, further description thereof will be omitted or simplified. The description of the hole 301 is substantially the same as that of Figures 1, 2A, and 12, so the duplicated description thereof will be omitted or simplified. The description of the plate 170 is substantially the same as that of Figure 13, so the duplicated description thereof will be omitted or simplified.

[0297] The vibration device 200 according to the embodiment of the present specification has a first size and includes multiple vibration generators 210 and 230 that are stacked on top of each other, thereby minimizing a decrease in the amount of displacement of the display panel 100 due to the thickness of the plate 170. Furthermore, the vibration device 200 according to the embodiment of the present specification has a first size and includes multiple vibration generators 210 and 230 that are stacked on top of each other, thereby increasing or maximizing the amount of displacement of the display panel 100 and increasing or improving the acoustic characteristics and sound pressure characteristics in the low-frequency range of sound generated by the displacement of the display panel 100. Therefore, in the device according to the other 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 and 230. The plate 170 can have a thickness that allows for smooth heat dissipation from the display panel 100.

[0298] The plate 170 according to the embodiments of the present specification may be connected or coupled to the front surface of the vibration device 200 via the above-described coupling member 150. For example, the plate 170 may be connected or coupled to the uppermost vibration generator of the plurality of 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.

[0299] 6 to 10, 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 by using 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 using the plate 170, and can dissipate heat from the display panel 100 by using the plate 170. Furthermore, by forming the holes 301 in the support member 300, it is possible to provide a device that can improve the acoustic characteristics and / or sound pressure characteristics in the low frequency range.

[0300] FIG. 16 is a diagram showing an apparatus according to another embodiment of the present specification. FIG. 16 is another cross-sectional view taken along line IV-IV' in FIG. 11. FIG. 16 is configured by adding a partition to the apparatus shown in FIGS. 11 to 13. Therefore, in the following description, redundant descriptions of the remaining components other than the partition and its related components will be omitted or simplified. The description of the partition can be similarly applied to the apparatuses of FIGS. 14 and 15.

[0301] Referring to FIG. 16, 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.

[0302] 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.

[0303] According to an embodiment of the present specification, the third partition member 630 may be disposed to entirely surround the first vibrating device 210-1 and the second vibrating device 210-2. The fourth partition member 640 (or the first enclosure) may surround the first vibrating device 210-1. The fifth partition member 650 (or the second enclosure) may surround the second vibrating device 210-2. The partitions will be described later with reference to FIG. 17.

[0304] According to an embodiment of the present specification, the plurality of holes 301 may be arranged inside the partition members. For example, the plurality of holes 301 may be arranged inside one or more of the third partition member 630 and the fourth partition member 640. For example, the plurality of holes 301 may be arranged along the inner edge of one or more of the third partition member 630 and the fourth partition member 640. For example, the plurality of holes 301 may be arranged inside one or more of the third partition member 630 and the fifth partition member 650. For example, the plurality of holes 301 may be arranged along the inner edge of one or more of the third partition member 630 and the fifth partition member 650. For example, the plurality of holes 301 may include the fourth partition member 640 (first enclosure) surrounding the first vibrating device 210-1 and the fifth partition member 650 (second enclosure) surrounding the second vibrating device 210-2. A fifth partition member 650 (second enclosure) may be included, and a plurality of holes 301 may be disposed inside the fourth partition member 640 and the fifth partition member 650, respectively.

[0305] 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.

[0306] 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. In another embodiment of the present specification, the first support member 310 may be omitted.

[0307] FIG. 17 is a diagram showing an apparatus according to another embodiment of the present specification. FIG. 17 is configured by adding partitions to the apparatuses shown in FIGS. 2A to 4, 6, and 11 to 13. Therefore, in the following description, redundant descriptions of the remaining configurations except for the partitions and their related configurations will be omitted or simplified. The description of the partitions can be similarly applied to the apparatuses of FIGS. 7 to 10, 14, and 15.

[0308] Referring to Figures 11, 12, 13, and 17, devices according to other embodiments of the present specification may further include a partition 600 that divides the first area (A1) and the second area (A2) of the display panel 100.

[0309] The partition 600 may be an air gap or space through which 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 sounds (PVS1, PVS2) or separate channels, and may prevent or reduce degradation of the characteristics of the sounds (PVS1, PVS2) due to interference between the 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, a baffle, or the like.

[0310] 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.

[0311] 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 in a portion corresponding to a middle region of the display panel 100. The first partition member 610 and the second partition member 620 can separate a first vibrosound (PVS1) generated by the first vibrating device 210-1 from a second vibratory sound (PVS2) generated by the second vibrating 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 attenuate or absorb vibrations of the display panel 100 at the center of the display panel 100, thereby blocking sound in the first region (A1) from being transmitted to the second region (A2) or sound in the second region (A2) from being transmitted 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 left and right sounds. As a result, the device according to the embodiment of the present specification 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 by the first partition member 610 and the second partition member 620.

[0312] According to an embodiment of the present disclosure, the partition 600 may be made of an elastic material that can be compressed to a certain extent. For example, the partition 600 may be made of, but is not limited to, polyurethane or polyolefin. In another embodiment of the present disclosure, the partition 600 may be made of, but is not limited to, single-sided tape, single-sided foam tape, double-sided tape, or double-sided foam tape.

[0313] According to an embodiment of the present specification, any one of the first partition member 610 and the second partition member 620 may be omitted. Even in this case, any one of the first partition member 610 and the second partition member 620 may be disposed between the first vibrating device 210-1 and the second vibrating device 210-2, thereby separating left and right sounds. 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 may be disposed between the display panel 100 and the support member 300, corresponding to the midline (CL) on the rear surface of the display panel 100.

[0314] 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 left and right sounds using the first partition member 610 or the second partition member 620.

[0315] 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 .

[0316] The third partition member 630 may be disposed to entirely surround the first vibrating device 210-1 and the second vibrating device 210-2. For example, the third partition member 630 may be disposed along the area between the rear edge of the display panel 100 and the front edge 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. 12 to 16 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 a single body together with the first connecting member 401.

[0317] 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 not limited to, a vibration space, a sound pressure space, a sound box, a sound part, a resonance box, or a resonance part.

[0318] 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 that is surrounded by the first partition member 610 and the third partition member 630 disposed in the first region (A1) of the display panel 100.

[0319] 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 the third partition member 630 disposed in the second region (A2) of the display panel 100.

[0320] 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 and 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, but is not limited to, a sound separation space, a sound blocking space, or a sound interference prevention space. The third air gap (AG3) separates the first air gap (AG1) and the second air gap (AG2), thereby preventing resonance or interference in a certain frequency band that may occur in each of the first air gap (AG1) and the second air gap (AG2).

[0321] The first vibration device 210-1 may be surrounded by a third partition member 630 and a third partition member 620, which provide a first air gap (AG1). The second vibration device 210-2 may be surrounded by a third partition member 630 and a second partition member 620, which provide a second air gap (AG2).

[0322] 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.

[0323] Therefore, the third partition member 630 surrounds the space between the display panel 100 and the support member 300, and together with the first partition member 610 and the second partition member 630, surrounds each of the first vibrating device 210-1 and the second vibrating device 210-2 individually, 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 also blocks the outflow of sound or sound pressure to the outside through the side surfaces between the display panel 100 and the support member 300, thereby further improving the sound output characteristics of the device (or display device).

[0324] The partition 600 according to the embodiments 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.

[0325] 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. According to an embodiment of the present specification, the fourth partition member 640 may have a rectangular shape surrounding the first vibrating device 210-1, but is not limited thereto. The fourth partition member 640 may have the same shape as the first vibrating device 210-1 or a different shape. For example, if the first vibrating device 210-1 has a square shape, the fourth partition member 640 may have a square shape that is relatively larger than the first vibrating device 210-1, or may have a circular or elliptical shape.

[0326] The fourth partition member 640 can limit (or define) the vibration region (or vibration area) of the display panel 100 caused by the first vibrating device 210-1. For example, as the size of the fourth partition member 640 in the first region (A1) of the display panel 100 increases, the vibration region of the first region (A1) increases, and the characteristics of the low-frequency range of the left-side sound can be improved. In another embodiment of this specification, as the size of the fourth partition member 640 in the first region (A1) of the display panel 100 decreases, the vibration region of the first region (A1) decreases, and the characteristics of the high-frequency range of the left-side 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 for the vibration of the display panel 100 caused by the vibration of the first vibrating device 210-1.

[0327] 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 to the fourth partition member 640 with respect to the midline (CL) on the rear surface of the display panel 100, for symmetry between the left and right acoustics.

[0328] 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, as the size of the fifth partition member 650 in the second region (A2) of the display panel 100 increases, the vibration region of the second region (A2) increases, and the characteristics of the low-frequency range of the right-side sound can be improved. In another embodiment of this specification, as the size of the fifth partition member 650 in the second region (A2) of the display panel 100 decreases, the vibration region of the second region (A2) decreases, and the characteristics of the high-frequency range of the right-side 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 for the vibration of the display panel 100 caused by the vibration of the second vibrating device 210-2.

[0329] 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 frequency band of the reproduced sound for 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 example 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.

[0330] Therefore, by including partition 600, devices according to other embodiments of the present specification can optimize the sound pressure characteristics of the left and right sounds and the bandwidth of the reproduced sound. For example, devices according to other embodiments of the present specification can include at least one of first partition member 610 and second partition member 620. For example, devices according to other embodiments of the present specification can include at least one of first partition member 610 and second partition member 620 and third partition member 630. For example, devices according to other embodiments of the present specification can include third to fifth partition members 630, 640, and 650. For example, devices according to other embodiments of the present specification can include all of first to fifth partition members 610, 620, 630, 640, and 650.

[0331] Therefore, the device according to another embodiment of the present specification can provide sound to a user by outputting left sound (PVS1) and right 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 another embodiment of the present specification 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 (PVS1, PVS2) by the partition 600. In addition, the device according to another embodiment of the present specification can improve the flatness of the sound pressure characteristics by reducing the resonance frequency due to the plates implemented in each of the first vibrating device 210-1 and the second vibrating device 210-2.

[0332] FIG. 18 is a diagram showing a device according to another embodiment of the present specification. FIG. 19A is a cross-sectional view taken along line V-V' in FIG. 18. FIG. 19B is another cross-sectional view taken along line V-V' in FIG. 18. FIG. 18 shows a device configured by adding a pad member to the device shown in FIG. 17. For example, a pad member may be added to the devices shown in FIGS. 2A to 4, 6, and 11 to 13. Therefore, hereinafter, redundant descriptions of the remaining components, excluding the pad member and its related components, will be omitted or simplified.

[0333] 18, 19A, and 19B, in another embodiment of the present disclosure, 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 multiple vibration structures, sound pressure may be reduced at a specific frequency. For example, sound pressure may be reduced in the mid-frequency range. Sound pressure may be reduced due to resonance or anti-resonance occurring at the boundaries between the multiple vibration structures. For example, sound pressure may be reduced due to resonance or anti-resonance occurring at the center between the multiple vibration structures. Therefore, to improve the reduction in sound pressure due to resonance or anti-resonance, the spacing between the multiple vibration structures may be reduced. However, reducing the spacing between the multiple vibration structures can be difficult due to process difficulties involved in arranging the multiple vibration structures. To improve the reduction in sound pressure, a pad member may be disposed at the boundaries between the multiple vibration structures.

[0334] 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 to improve degradation or dips in sound quality that occur at the boundary region between the plurality of vibrating structures. For example, the pad member may suppress or reduce the resonant frequency at the boundary between the plurality of vibrating structures. The pad member may be configured to reduce the reduction in sound pressure that occurs at the boundary between the plurality of vibrating structures.

[0335] 18 and 19A, pad members may be disposed between two or more vibrating structures. For example, a first pad member 701 may be disposed between multiple vibrating structures of a first vibrating device 210-1. For example, the first pad member 701 may overlap the multiple vibrating structures. A second pad member 702 may be disposed between multiple vibrating structures of a second vibrating device 210-2. For example, the second pad member 702 may overlap the multiple vibrating structures. The first pad member 701 and the second pad member 702 may be, but are not limited to, resonance control pads, external resonance pads, gap pads, or resonance control sections.

[0336] 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 that is 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 that is superimposed between the multiple vibrating structures of the second vibrating device 210-2.

[0337] 19A , 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.

[0338] 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, with respect to the first direction (X direction), 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.

[0339] According to an embodiment of the present specification, each of the plurality of vibrating structures may include a vibrating portion 211, a first electrode portion (E1) disposed on a first surface of the vibrating portion 211, and a second electrode portion (E2) disposed on a second surface different from the first surface of the vibrating portion 211. Each of the plurality of vibrating structures may further include a first protective member 213 on the first surface of the first electrode portion (E1), and a second protective member 215 on the second surface different from the first surface of the first electrode portion (E1).

[0340] According to an embodiment of the present specification, each of the plurality of vibrating structures may further include a vibrating part 211, a first protective member 213 on a first surface of the vibrating part 211, and a second protective member 215 on a second surface different from the first surface of the vibrating part 211. Each of the plurality of vibrating structures may further include a first electrode part (E1) between the vibrating part 211 and the first protective member 213 and a second electrode part (E2) between the vibrating part 211 and the second protective member 215. For example, the first protective member 213 and the second protective member 215 of the vibrating device may commonly cover the plurality of vibrating structures. For example, the first protective member 213 and the second protective member 215 of the vibrating device may be arranged to cover the plurality of vibrating structures.

[0341] In each of the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibrating device 210-1, the first electrode unit (E1) may be disposed closer to the display panel 100 than the second electrode unit (E2). For example, the first electrode unit (E1) may be a negative electrode, and the second electrode unit (E2) may be a positive electrode. Without being limited thereto, the first electrode unit (E1) may be a positive electrode, and the second electrode unit (E2) may be a negative electrode.

[0342] The first pad member 701 and the second pad member 702 may be made of a material that can absorb or adjust vibrations. 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 to these. For example, the first pad member 701 and the second pad member 702 may be made of a material that is different from that of the partition 600, but are not limited to these.

[0343] 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 providing pad members between multiple vibrating structures, it is possible to improve the reduction in sound pressure at a specific frequency generated between the multiple vibrating structures and to improve the heat dissipation effect, which can reduce heat caused by vibration of the multiple vibrating structures. 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.

[0344] 19B , a 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.

[0345] The sizes 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 plurality of vibrating structures. For example, with reference to the first direction (X direction), the widths of the first pad member 801 and the second pad member 802 may be the same as or different from the width between the third vibrating structure 210C and the fourth vibrating structure 210D.

[0346] According to an embodiment of the present specification, each of two or more or a plurality of vibrating structures may further include a vibrating portion 211, a first electrode portion (E1) disposed on a first surface of the vibrating portion 211, and a second electrode portion (E2) disposed on a second surface different from the first surface of the vibrating portion 211. For example, the vibrating portion 211 may include first portions 211a and 221a1 and second portions 211b and 221a2, similar to the vibrating portion 211 described in FIGS. 3 and 4 or similar to the vibrating portion 211 described in FIGS. 5A to 5F. For example, as shown in FIGS. 5A to 5F or 10, the second portions 211b and 221a2 may be disposed outside the first portions 211a and 221a1, but are not limited thereto. Each of the plurality of vibrating structures may further include a first protective member 213 disposed on the first surface of the first electrode portion (E1) and a second protective member 215 disposed on a second surface different from the first surface of the first electrode portion (E1).

[0347] According to an embodiment of the present specification, each of the plurality of vibrating structures may further include a vibrating part 211, a first protective member 213 on a first surface of the vibrating part 211, and a second protective member 215 on a second surface different from the first surface of the vibrating part 211. Each of the plurality of vibrating structures may further include a first electrode part (E1) between the vibrating part 211 and the first protective member 213, and a second electrode part (E2) between the vibrating part 211 and the second protective member 215. For example, the first protective member 213 and the second protective member 215 of the vibrating device may commonly cover the plurality of vibrating structures. For example, the first protective member 213 and the second protective member 215 of the vibrating device may be arranged to cover the plurality of vibrating structures.

[0348] One or more of the first pad member 801 and the second pad member 802 may be configured the same as the first vibrating device 210-1. For example, if one or more of the first pad member 801 and the second pad member 802 are configured the same as the first vibrating 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 vibrating device.

[0349] According to an embodiment of the present specification, the first pad member 801 may include a vibration layer 311, a first electrode unit (E31), and a second electrode unit (E32). For example, the first pad member 801 may include a vibration layer 311, a first electrode unit (E31) disposed on a first surface of the vibration layer 311, and a second electrode unit (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 a first portion 211a and a second portion 211b, similar to the vibration portion 211 described in FIGS. 3 and 4 or similar to the vibration portion 211 described in FIGS. 5A to 5F. 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 below 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 FIGS. 3, 4, and 7 to 9, and therefore will not be described again.

[0350] According to an embodiment of the present specification, the first electrode unit (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 unit (E2). For example, the first electrode unit (E1) may be a negative electrode, and the second electrode unit (E2) may be a positive electrode. Without being limited thereto, the first electrode unit (E1) may be a positive electrode, and the second electrode unit (E2) may be a negative electrode. The second electrode unit (E32) of the first pad member 801 may be disposed closer to the display panel 100 than the first electrode unit (E31). For example, the first electrode unit (E31) may be a negative electrode, and the second electrode unit (E32) may be a positive electrode. Without being limited thereto, the first electrode unit (E31) may be a positive electrode, and the second electrode unit (E32) may be a negative electrode. The polarities of the first electrode unit (E1) and the second electrode unit (E2) of the first vibrating device 210-1 may be configured to be opposite to the polarities of the first electrode unit (E31) and the second electrode unit (E32) of the first pad member 801. For example, the polarities of the first electrode unit (E1) of the plurality of vibrating structures and the second electrode unit (E32) of the pad member may be different from each other, based on the display panel 100. For example, based on the display panel 100, the first electrode unit (E1) and the second electrode unit (E2) of the first vibrating device 210-1 may be configured as a negative electrode and a positive electrode, and the second electrode unit (E32) and the first electrode unit (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 unit (E1) and the second electrode unit (E2) of the first vibrating device 210-1 may be configured as a positive electrode and a negative electrode, and the second electrode unit (E32) and the first electrode unit (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 unit of the first pad member 801 is arranged as an electrode unit having the opposite polarity to that of the first vibrating device 210-1, so that the counter vibration by the first pad member 801 can reduce or cancel out the dip phenomenon caused by resonance between multiple vibrating structures. Therefore, by providing pad members between multiple vibrating structures, it is possible to improve the reduction in sound pressure at a specific frequency that occurs between the multiple vibrating structures.

[0351] Fig. 20A is another cross-sectional view taken along line VV' in Fig. 18. Fig. 20B is another cross-sectional view taken along line VV' in Fig. 18.

[0352] 20A and 20B show pad members configured on a plurality of vibration generators 210, 230 of the vibration device 200 of Figures 7 to 10, 14, and 15. Therefore, a description of the vibration device will be omitted or simplified.

[0353] 18, 20A and 20B, a vibration device 200 according to another embodiment of the present disclosure can include multiple vibration generators 210, 230. The multiple vibration generators 210, 230 can include multiple vibrating structures.

[0354] According to an embodiment of the present specification, each of the plurality of vibrating structures may include a vibrating unit 221. The vibrating unit 221 may include a vibrating layer 221a, a first electrode unit 221b disposed on a first surface of the vibrating layer 221a, and a second electrode unit 221c disposed on a second surface different from the first surface of the vibrating layer 221a. Each of the plurality of vibrating structures may further include a first protective member 1213 on the first surface of the first electrode unit 221b and a second protective member 1215 on the second surface different from the first surface of the first electrode unit 221b.

[0355] According to an embodiment of the present specification, each of the plurality of vibrating structures may further include a vibrating layer 221a, a first protective member 1213 on a first surface of the vibrating layer 221a, and a second protective member 1215 on a second surface different from the first surface of the vibrating layer 221a. Each of the plurality of vibrating structures may further include a first electrode portion 221b between the vibrating layer 221a and the first protective member 1213 and a second electrode portion 221c between the vibrating layer 221a and the second protective member 1215. For example, the first protective member 1213 and the second protective member 1215 of the vibrating device may commonly cover the plurality of vibrating structures. For example, the first protective member 1213 and the second protective member 1215 of the vibrating device may be arranged to cover the plurality of vibrating structures.

[0356] 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 surfaces 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 surfaces 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) of the first pad member 701 may be positioned to correspond to the first portion 221a1. The tip (or one side) 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) 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.

[0357] 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 surfaces 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) of the second pad member 702 may be disposed to correspond to the first portion 221a1. The tip (or one side) of the second pad member 702 may overlap with the first portion 221a1 without overlapping with the second portion 221a2. For example, the tip (or one side) of the second pad member 702 may be located at or aligned with the boundary between the second portion 221a2 and the first portion 221a1. For example, the tip (or one side) of the second pad member 702 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. The first pad member 701 and the second pad member 702 may be, but are not limited to, resonance control pads, external resonance pads, gap pads, or resonance control portions.

[0358] In another embodiment of the present specification, the first pad member 701 and the second pad member 702 may be configured as a single pad member. For example, a single pad member may be configured on the rear surface of the second vibration generator 230. For example, the pad member may be arranged on the rear surfaces of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230. For example, the pad member may be arranged on the rear surfaces of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230, including between the third vibrating structure 210C and the fourth vibrating structure 210D. For example, the pad member may be arranged over the entire rear surfaces of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230.

[0359] 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 .

[0360] The first electrode unit 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 unit 221c. For example, the first electrode unit 221b may be a negative electrode. For example, the second electrode unit 221c may be a positive electrode. The first electrode unit 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 unit 221c. For example, the first electrode unit 221b may be a negative electrode. For example, the second electrode unit 221c may be a positive electrode. For example, one or more of the first electrode portions 221b of the third vibration structure 210C and the fourth vibration structure 210D of the first vibration generator 210 and the first electrode portions 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 portion 221c.

[0361] 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, but not limited to, a silicone-based polymer, a paraffin wax, and an acrylic-based polymer. For example, the first pad member 701 and the second pad member 702 may be made of, but not limited to, a material different from that of the partition 600.

[0362] The first pad member 701 can reduce heat caused by vibration of the third vibrating structure 210C of the first vibration generator 210 and the third vibrating structure 210C of the second vibration generator 230. The second pad member 702 can reduce heat caused by vibration of the fourth vibrating structure 210D of the first vibration generator 210 and the fourth vibrating structure 210D of the second vibration generator 230. Therefore, by providing a pad member on the vibrating device, it is possible to improve the reduction in sound pressure at a specific frequency generated by the multiple vibrating structures and to improve the heat dissipation effect, which can reduce heat caused by the vibration of the multiple vibrating structures. According to other embodiments of the present specification, a heat dissipation member may be further disposed between the display panel 100 and the vibrating device. For example, the heat dissipation member may be disposed on the rear surface of the display panel 100.

[0363] 18 and 20B, 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.

[0364] According to an embodiment of the present specification, each of the plurality of vibrating structures may include a vibrating unit 221. The vibrating unit 221 may include a vibrating layer 221a, a first electrode unit 221b disposed on a first surface of the vibrating layer 221a, and a second electrode unit 221c disposed on a second surface different from the first surface of the vibrating layer 221a. Each of the plurality of vibrating structures may further include a first protective member 1213 on the first surface of the first electrode unit 221b and a second protective member 1215 on the second surface different from the first surface of the first electrode unit 221b.

[0365] According to an embodiment of the present specification, each of the plurality of vibrating structures may include a vibrating layer 221a, a first protective member 1213 on a first surface of the vibrating layer 221a, and a second protective member 1215 on a second surface different from the first surface of the vibrating layer 221a. Each of the plurality of vibrating structures may further include a first electrode portion 221b between the vibrating layer 221a and the first protective member 1213 and a second electrode portion 221c between the vibrating layer 221a and the second protective member 1215. For example, the first protective member 1213 and the second protective member 1215 of the vibrating device may commonly cover the plurality of vibrating structures. For example, the first protective member 1213 and the second protective member 1215 of the vibrating device may be arranged to cover the plurality of vibrating structures.

[0366] 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 portion (E31), and a second electrode portion (E32). For example, the first pad member 801 and the second pad member 802 may include a vibration layer 311, a first electrode portion (E31) disposed on a first surface of the vibration layer 311, and a second electrode portion (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 FIGS. 3 and 4 or similar to the vibration section 211 described in FIGS. 5A to 5F. 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 to this, 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 may be configured to be different from the arrangement of the first and second parts of the vibration layer 221a of each of the multiple vibration structures.

[0367] The first protective member 313 may be disposed between the vibration layer 311 and the first electrode unit (E31). For example, the first protective member 313 may be disposed below the first electrode unit (E31). For example, the first protective member 313 may protect the first electrode unit (E31). The second protective member 315 may be disposed between the vibration layer 311 and the second electrode unit (E32). For example, the second protective member 315 may be disposed on the second electrode unit (E32). For example, the second protective member 315 may protect the second electrode unit (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 FIGS. 3, 4, and 7 to 9, and therefore, a redundant description thereof will be omitted.

[0368] The first pad member 801 may be disposed on the multiple 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 multiple 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 multiple vibration generators 210, 230 and the support member 300. For example, the first pad member 801 may be disposed between the rear surfaces of the multiple 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 multiple 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 multiple vibration generators 210, 230 and the upper surface of the support member 300. For example, the first pad member 801 may be disposed so as to correspond to the first portion 221a1. The tip (or one side) of the first pad member 801 may overlap with the first portion 221a1 without overlapping with the second portion 221a2. For example, the tip (or one side) 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.

[0369] 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 surfaces 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 second pad member 802 may be disposed so as to correspond to the first portion 221a1. The tip (or one side) of the second pad member 802 may not overlap the second portion 221a2 but may overlap the first portion 221a1. For example, a tip (or one side) 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, resonance control pads, external resonance pads, gap pads, or resonance control portions.

[0370] In another embodiment of the present specification, the first pad member 801 and the second pad member 802 may be configured as a single pad member. For example, a single pad member may be configured on the rear surface of the second vibration generator 230. For example, the pad member may be arranged on the rear surfaces of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230. For example, the pad member may be arranged on the rear surfaces of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230, including between the third vibrating structure 210C and the fourth vibrating structure 210D. For example, the pad member may be arranged over the entire rear surfaces of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230.

[0371] 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.

[0372] One or more of the first pad member 801 and the second pad member 802 may be configured 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 the same as the multiple vibrating 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 the same as the vibration generators 210, 230, 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.

[0373] According to an embodiment of the present specification, the first pad member 801 may include a vibration layer 311, a first electrode portion (E31), and a second electrode portion (E32). For example, the vibration layer 311 may include a first portion 211a and a second portion 211b, similar to the vibration portion 211 described in FIGS. 3 and 4, or similar to the vibration portion 211 described in FIGS. 5A to 5F. In 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. 7 to 10.

[0374] The first protective member 313 may be disposed below the first electrode portion (E31). For example, the first protective member 313 may protect the first electrode portion (E31). The second protective member 315 may be disposed above the second electrode portion (E32). For example, the second protective member 315 may protect the second electrode portion (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 FIGS. 3, 4, and 7 to 9, and therefore, a repeated description thereof will be omitted.

[0375] The first electrode unit 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 unit 221c. For example, the first electrode unit 221b may be a negative electrode. For example, the second electrode unit 221c may be a positive electrode. The first electrode unit 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 unit 221c. For example, the first electrode unit 221b may be a negative electrode. For example, the second electrode unit 221c may be a positive electrode. For example, one or more of the first electrode portions 221b of the third vibrating structure 210C and the fourth vibrating structure 210D of the first vibration generator 210 and the first electrode portions 221b of the third vibrating structure 210C and the fourth vibrating structure 210D of the second vibration generator 230 may be positioned closer to the display panel 100 than the second electrode portion 221c.

[0376] The second electrode unit (E32) of the first pad member 801 may be disposed closer to the display panel 100 than the first electrode unit (E31). For example, the first electrode unit (E31) may be a negative electrode. For example, the second electrode unit (E32) may be a positive electrode. The polarities of the first electrode unit 221b and the second electrode unit 221c of the first vibration generator 210 may be opposite to the polarities of the first electrode unit (E31) and the second electrode unit (E32) of the first pad member 801. For example, the polarities of the first electrode unit (E1) of the plurality of vibration structures and the second electrode unit (E32) of the first pad member 801 may be different from each other, based on the display panel 100. For example, with respect to the display panel 100, the first electrode unit 221b and the second electrode unit 221c of the first vibration generator 210 may be configured as a negative electrode and a positive electrode, and the second electrode unit (E32) and the first electrode unit (E31) of the first pad member 801 may be configured as a positive electrode and a negative electrode. The second electrode unit (E32) of the second pad member 802 may be disposed closer to the display panel 100 than the first electrode unit (E31). For example, the first electrode unit (E31) may be a negative electrode. For example, the second electrode unit (E32) may be a positive electrode. The polarities of the first electrode unit 221b and the second electrode unit 221c of the second vibration generator 230 may be configured opposite to the polarities of the first electrode unit (E31) and the second electrode unit (E32) of the second pad member 802. For example, with respect to the display panel 100, the first electrode portion 221b and the second electrode portion 221c of the second vibration generator 230 may be configured as a negative electrode and a positive electrode, and the second electrode portion (E32) and the first electrode portion (E31) of the second pad member 802 may be configured as a positive electrode and a negative electrode. Thus, by arranging the electrode portion of the first pad member 801 and / or the electrode portion of the second pad member 802 as an electrode portion having the opposite polarity to the first vibration generator 210 and / or the second vibration generator 230, the counter vibration of the first pad member 801 and / or the second pad member 802 can reduce or cancel out the dip phenomenon caused by resonance between multiple vibration structures. Therefore, by configuring pad members in the vibration device, it is possible to improve the reduction in sound pressure at a specific frequency generated by multiple vibration structures.

[0377] In another embodiment of the present specification, the pad member may be applied to the device shown in FIGS. 2A and 6. Referring to FIGS. 2A and 6, the pad member may be disposed between the vibration device 200 and the support member 300. For example, the pad member may be disposed between the vibration device 200 and the second support member 330. For example, the pad member may be disposed between the rear surface of the vibration device 200 and the second support member 330. For example, 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 be disposed in a portion where there is no hole 301. The pad member may be a transmission member or vibration transmission member that transmits 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, thereby providing a device with improved acoustic characteristics and / or sound pressure characteristics.

[0378] 21A to 21C are diagrams showing devices according to other embodiments of the present specification.

[0379] 21A-21C, a device according to another embodiment of the present disclosure may include a vibration device 200, a support member 300, and pad members 701, 801.

[0380] 21A, as described in FIGS. 18, 19A, and 19B, the vibration device can include a first vibration device 210-1 and a second vibration device 210-2. The description of FIG. 21A can also be applied to the pad member 801 of FIG. 19B. For example, the description of FIG. 21A can also be applied to the vibration device of FIG. 19B. For example, the pad member can be applied to the devices of FIGS. 2A-4, 6, 12, 13, and 16. For example, the pad member can be realized with a plurality of holes 301. The plurality of holes 301 can be configured in the first support member 310 and the second support member 330 as described in FIG. 2B.

[0381] 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. As another example of the present specification, the first pad member 701 may be disposed between the vibrating device and the first support member 310. The support member 300 may include a plurality of holes 301. For example, the second support member 330 may include a plurality of holes 301. For example, the first support member 310 and the second support member 330 may include a plurality of holes 301. The plurality of holes 301 may be configured to vary from the center to the edge of the vibrating device. For example, the plurality of holes 301 may be disposed to vary from the center to the edge of the third vibrating structure 210C of the first vibrating device 210-1. For example, the holes 301 may be arranged so as to vary from the center to the edge of the fourth vibrating structure 210D of the first vibrating device 210-1.

[0382] A third partition member 630 may be disposed between the vibration device 200 and the support member 300. The third partition member 630 may be disposed to surround the third vibrating structure 210C and the fourth vibrating structure 210D, as described in FIGS. 17 and 18 . In other embodiments herein, an adhesive layer may be disposed between the vibration device 200 and the support member 300. For example, the adhesive layer may be disposed between the second protective member 215 and the support member 300. For example, the adhesive layer may be disposed between the second protective member 215 and the first support member 310. For example, the adhesive layer may include, but is not limited to, epoxy, acrylic, silicone, or urethane. According to other embodiments herein, the adhesive layer may be, but is not limited to, an adhesive resin, double-sided tape, or a double-sided adhesive foam pad.

[0383] Referring to FIG. 21B, as described in FIGS. 18, 20A, and 20B, the vibration device 200 can include multiple vibration generators 210, 230. The multiple vibration generators 210, 230 can include multiple vibrating structures. The description of FIG. 21B can also be applied to the pad members 801, 802 of FIG. 20B. For example, the description of FIG. 21B can also be applied to the vibration device of FIG. 20B. For example, the pad members can be applied to the devices of FIGS. 7-10, 14, and 15. For example, the pad members can be implemented with multiple holes 301. The multiple holes 301 can be configured in the first support member 310 and the second support member 330, as described in FIG. 2B.

[0384] The first pad member 701 may be disposed on the plurality of 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 vibration device and the second support member 330. For example, the first pad member 701 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. According to another embodiment of the present specification, the second pad member 702 may be disposed between the vibration device and the first support member 310. The support member 300 may include a plurality of holes 301. For example, the second support member 330 may include a plurality of holes 301. For example, the first support member 310 and the second support member 330 may include a plurality of holes 301. The plurality of holes 301 may be configured to vary from the center to the edge portions of the plurality of vibration generators 210, 230. For example, the holes 301 may be arranged so as to vary from the center to the edge of the second vibration generator 230. For example, the first pad member 701 may overlap with the holes 301.

[0385] The second pad member 702 may be disposed on the plurality of 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 vibration device and the second support member 330. 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. According to another embodiment of the present specification, the second pad member 702 may be disposed between the vibration device and the first support member 310. The support member 300 may include a plurality of holes 301. For example, the second support member 330 may include a plurality of holes 301. For example, the first support member 310 and the second support member 330 may include a plurality of holes 301. The plurality of holes 301 may be configured to vary from the center to the edge portions of the plurality of vibration generators 210, 230. For example, the holes 301 may be arranged so as to vary from the center to the edge of the second vibration generator 230. For example, the second pad member 702 may overlap the holes 301.

[0386] 21C, as described with reference to FIGS. 1 to 2B, the vibration device 200 may be disposed on the rear surface of the display panel 100. The description of FIG. 21C may also be applied to the pad member 801 of FIG. 19B. For example, the description of FIG. 21C may also be applied to the vibration device of FIG. 19B. For example, the pad member may be applied to the devices of FIGS. 2A to 4, 6, 12, 13, and 16. For example, the pad member may be realized with a plurality of holes 301. The plurality of holes 301 may be formed in the first support member 310 and the second support member 330, as described with reference to FIG. 2B.

[0387] The first pad member 701 may be disposed on the back surface of the vibration device 200. 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 vibration device 200 and the second support member 330. According to another embodiment of the present specification, the first pad member 701 may be disposed between the vibration device 200 and the first support member 310. The support member 300 may include a plurality of holes 301. For example, the second support member 330 may include a plurality of holes 301. For example, the first support member 310 and the second support member 330 may include a plurality of holes 301. The plurality of holes 301 may be configured to vary from the center to the edge portions of the vibration device 200. For example, the first pad member 701 may overlap the plurality of holes 301.

[0388] 22A and 22B show an apparatus according to another embodiment of the present disclosure.

[0389] 22A and 22B, in a device according to another embodiment of the present specification, the vibration device may include a first vibrating device 210-1, a second vibrating device 210-2, a third vibrating device 210-3, and a fourth vibrating device 210-4 disposed on the rear surface of the display panel 100. While FIGS. 22A and 22B have been described using the devices of FIGS. 12 and 13 as examples, the present invention is not limited thereto. For example, the description of FIGS. 22A and 22B may also be applied to FIGS. 2A to 4, 6 to 11, 14, and 15. The description of FIGS. 22A and 22B may also be applied to FIGS. 19A to 20B.

[0390] 22A , the first vibrating device 210-1 and the third vibrating device 210-3 may be arranged 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 arranged alternately or diagonally within 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).

[0391] 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).

[0392] 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 first vibration sound (or left-side sound) or a first 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 of the first vibrating device 210-1 and the third vibrating device 210-3, thereby improving the acoustic characteristics of the left-side sound, including the low-frequency range. 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 first vibration sound or first haptic feedback according to other embodiments of this specification can be improved compared to the first vibration sound or first haptic feedback described in FIG. 17.

[0393] According to an embodiment of the present specification, the first vibrating device 210-1 may be arranged in a first region (A1) of the display panel 100 so as to be biased toward an edge portion 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 in a first region (A1) of the display panel 100 so as to be biased toward a center line (CL) 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 alternately with the first vibrating device 210-1 in the first region (A1) of the display panel 100, so that the third vibrating device 210-3 does not overlap with the first vibrating device 210-1 in the first direction (X) and the second direction (Y). According to the embodiments 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 two vibrating devices 210-1, 210-3 in a 2x2 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.

[0394] The second vibrating device 210-2 and the fourth vibrating device 210-4 may each be arranged in a second region (A2) of the display panel 100. For example, the second vibrating device 210-2 and the fourth vibrating device 210-4 may each be arranged alternately 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).

[0395] 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).

[0396] The second vibrating device 210-2 and the fourth vibrating device 210-4 can vibrate the second region (A2) of the display panel 100 to generate a second vibratory sound (or right-side sound) or a second 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 of the second vibrating device 210-2 and the fourth vibrating device 210-4, thereby improving the acoustic characteristics of the right-side sound, including the low-frequency range. 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 second vibratory sound or second haptic feedback according to other embodiments of this specification can be further improved compared to the second vibratory sound or second haptic feedback described in FIG. 17.

[0397] 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 of the display panel 100. For example, the second vibrating device 210-2 may be arranged in the upper right region of the second region (A2) of the display panel 100 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 about 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 lower left region of the second region (A2) of the display panel 100 adjacent to the center line (CL) of the display panel 100. The fourth vibrating device 210-4 may be arranged alternately with the second vibrating device 210-2 in the second region (A2) of the display panel 100, and may not overlap with the second vibrating device 210-2 in the first direction (X) and the second direction (Y). According to the embodiment of the present specification, the d...

Claims

1. a display panel configured to display video; a vibration device attached to a rear surface of the display panel to vibrate the display panel, the vibration device including a piezoelectric material; a support member spaced apart from a rear surface of the vibration device with a gap space therebetween, the support member including a plurality of holes; the plurality of holes are a display device configured in a part of the support member facing the vibration device, the plurality of holes are arranged in a first direction and a second direction intersecting the first direction; the display panel includes a first region and a second region; the vibration device includes a first vibration device configured to vibrate the first region and a second vibration device configured to vibrate the second region; the plurality of holes are arranged along the first direction and the second direction so as to overlap with the first vibration device and the second vibration device, respectively; The display device includes: a first partition member configured to surround the first vibrating device between the rear surface of the display panel and the support member; a second partition member configured to surround the second vibrating device between the rear surface of the display panel and the support member, The display device, wherein the plurality of holes are arranged inside the first partition member and the second partition member, respectively.

2. A display panel configured to display an image; a vibration device attached to a rear surface of the display panel to vibrate the display panel, the vibration device including a piezoelectric material; a support member spaced apart from a rear surface of the vibration device with a gap space therebetween, the support member including a plurality of holes; the plurality of holes are formed in a part of the support member facing the vibration device, the vibration device includes two or more vibration generating units and a pad member disposed between the two or more vibration generating units, The pad member is a vibration layer; a first protective member disposed on a first surface of the vibration layer; a second protection member disposed on a second surface of the vibration layer that is different from the first surface.

3. the gap space is connected to the space between the display panel and the support member so as to surround a side surface of the vibration device, The display device according to claim 1 , wherein the plurality of holes are configured to be connected to the space via the gap space.

4. 3. The display device according to claim 2, wherein each of the two or more vibration generating units includes a plurality of first portions having the piezoelectric material and a plurality of second portions having a soft material disposed between the plurality of first portions.

5. The display device according to claim 4 , wherein the plurality of first portions and the plurality of second portions are arranged in at least one of a horizontal direction and a vertical direction of the display panel.

6. Each of the two or more vibration generating units is a vibration layer containing the piezoelectric material; a first protective member disposed on a first surface of the vibration layer; The display device according to claim 2 , further comprising a second protection member disposed on a second surface of the vibration layer that is different from the first surface.

7. Each of the two or more vibration generating units is a first electrode portion located between the vibration plate and the first protection member; The display device according to claim 6 , further comprising a second electrode portion located between the vibration layer and the second protection member.

8. The display device according to claim 6 , wherein the vibration layer includes a plurality of first portions having the piezoelectric material and a plurality of second portions having an organic material disposed between the plurality of first portions.

9. The display device according to claim 1 or 2, further comprising a plate between the display panel and the vibration device.

10. A display device as described in Claim 1, wherein the plurality of holes are arranged inside the first partition member.

11. a first pad member disposed on each of the two or more vibration generating units; The display device according to claim 2 , further comprising a second pad member disposed on a boundary between the two or more vibration generating units and on a part of the two or more vibration generating units.

12. a first pad member disposed on each of the two or more vibration generating units; The display device according to claim 2 , further comprising a second pad member disposed between adjacent first pad members disposed on each of the two or more vibration generating units.

13. A vibrating member; a vibration device attached to a rear surface of the vibration member to vibrate the vibration member, the vibration device including a piezoelectric material; a support member spaced apart from a rear surface of the vibration device with a gap space therebetween, the support member including a plurality of holes; The plurality of holes are configured in a part of the support member facing the vibration device, the plurality of holes are arranged in a first direction and a second direction intersecting the first direction; the vibration member includes a first region and a second region; the vibration device includes a first vibration device configured to vibrate the first region and a second vibration device configured to vibrate the second region; the plurality of holes are arranged along the first direction and the second direction so as to overlap with the first vibration device and the second vibration device, respectively; The device comprises: a first partition member configured to surround the first vibration device between the rear surface of the vibration member and the support member; a second partition member configured to enclose the second vibration device between the rear surface of the vibration member and the support member, The apparatus, wherein the plurality of holes are disposed inside each of the first partition member and the second partition member.

14. A vibration member; a vibration device attached to a rear surface of the vibration member to vibrate the vibration member, the vibration device including a piezoelectric material; a support member spaced apart from a rear surface of the vibration device with a gap space therebetween, the support member including a plurality of holes; the plurality of holes are formed in a part of the support member facing the vibration device, the vibration device includes two or more vibration generating units and a pad member disposed between the two or more vibration generating units, The pad member is a vibration layer; a first protective member disposed on a first surface of the vibration layer; a second protective member disposed on a second surface of the vibration layer that is different from the first surface.

15. the gap space is connected to the space between the vibration member and the support member so as to surround a side surface of the vibration device, The apparatus according to claim 13 or 14, wherein the plurality of holes are configured to be connected to the space via the gap space.

16. further comprising a rigid member disposed on the back surface of the vibration member; The apparatus of claim 13 or 14, wherein the rigid member covers at least a portion of the plurality of holes.

17. The apparatus of claim 16 , further comprising a gap disposed between the rigid member and the support member.

18. a circuit portion disposed on the rear surface of the vibration member and including a forming portion; The vibration device is disposed in the circuit section, The apparatus according to claim 13 or 14, wherein the plurality of holes are disposed in the forming section.

19. further comprising a rigid member disposed on the back surface of the vibration member; The apparatus of claim 18 , wherein the rigid member covers some of the holes disposed in the forming section.

20. a circuit portion disposed on the rear surface of the vibration member; a first forming portion extending in the first direction of the circuit portion; a second forming portion extending in the second direction of the circuit portion, The apparatus of claim 13 , wherein the plurality of holes are disposed along the first forming portion and the second forming portion.

21. further comprising a rigid member disposed on the back surface of the vibration member; 21. The apparatus of claim 20, wherein the rigid member covers at least a portion of the plurality of holes disposed along at least one or more of the first forming section and the second forming section.

22. a signal cable connected to the vibration device; 15. The device according to claim 13 or 14, further comprising at least one other hole through which the signal cable is led out.

23. The vibration device is a vibration section including a plurality of piezoelectric sections each including a piezoelectric material and a flexible section between the plurality of piezoelectric sections; a first electrode portion disposed on a first surface of the vibration portion; The device according to claim 13 or 14, further comprising a second electrode portion disposed on a second surface of the vibration portion that is different from the first surface.

24. the vibration device includes a signal cable connected to the first electrode portion and the second electrode portion, The signal cable a wiring layer connected to each of the first electrode portion and the second electrode portion; a first protective member disposed on a first surface of the wiring layer; 24. The device of claim 23, further comprising: a second protective member disposed on a second surface of the wiring layer that is different from the first surface.

25. The vibration device is a first protective member that covers the first electrode portion; a second protective member that covers the second electrode portion; a first plate between the first protection member and the first electrode portion; 24. The device of claim 23, further comprising a second plate between the second protective member and the second electrode portion.

26. 24. The device of claim 23, wherein the first electrode portion and the second electrode portion comprise conductive tape.

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