Device

Abstract

To make a sound travel forward.SOLUTION: A device according to the present disclosure may include a vibration member, a support member behind the vibration member, and a vibration device. The vibration device may be on the support member and may include a curved shape.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This specification relates to an apparatus, and more particularly, to an apparatus capable of outputting sound.

Background Art

[0002] An apparatus, such as a display device, is mounted on electronic products or home appliances such as a television, a monitor, a notebook computer, a smartphone, a tablet computer, an electronic pad, a wearable device, a watch phone, a personal digital assistant, a navigation device, or a vehicle control display device, and is used as a screen for displaying images.

[0003] The display device can include a display panel for displaying an image and an audio device for outputting audio related to the image. However, since the sound output from the audio device travels behind or below the display panel, there is a problem that the sound quality deteriorates due to interference in the sound reflected by the wall or the ground, and thus it is difficult to accurately transmit the sound, resulting in a problem that the immersion feeling of the viewer decreases.

[0004] The description provided in the background art should not be regarded as prior art because it is described in the background art or is related to the background art. The background art can include information explaining one or more aspects in the technical field to which the invention of this specification belongs.

Summary of the Invention

Problems to be Solved by the Invention

[0005] The inventors of the present specification recognized the problems with the above-described display device, conducted several experiments that could improve the sound quality when viewing images from the front of the display panel, where the direction of sound propagation becomes the front direction of the display panel, and developed new inventions. Through multiple experiments, they invented a display device with a new structure that can generate sound propagating in front of the display panel and improve the sound quality. Therefore, one embodiment of the present specification relates to a device that substantially obviates one or more problems resulting from the limitations and disadvantages of the background art.

[0006] One problem to be solved according to an embodiment of the present specification is to provide a device (or display device), a vibration device, and a vehicle including the same that can improve the sound quality and enhance the immersion feeling of viewers.

[0007] One problem to be solved according to an embodiment of the present specification is to provide a device (or display device), a vibration device, and a vehicle including the same in which the acoustic characteristics and / or sound pressure characteristics of sound are improved.

[0008] One problem to be solved according to an embodiment of the present specification is to provide a device (or display device), a vibration device, and a vehicle including the same in which the acoustic characteristics and / or sound pressure characteristics of sound in the low-frequency band are improved.

[0009] One problem to be solved according to an embodiment of the present specification is to provide a device (or display device), a vibration device, and a vehicle including the same that can generate sound in the front direction of a vibration member by using the vibration member as an acoustic diaphragm.

[0010] In addition to the technical problems of the present invention mentioned above, other features and advantages of the present invention will be clearly understood by those with ordinary knowledge in the technical field to which the present invention pertains from the following description and such description and explanations.

Means for Solving the Problems

[0011] The device according to an embodiment of the present specification may include a vibrating member, a support member on the back surface of the vibrating member, and a vibration device on the support member that includes a curved surface shape.

[0012] The device according to an embodiment of the present specification may include a support member having a curved surface portion, and a vibration device on the curved surface portion.

[0013] The device according to an embodiment of the present specification includes a passive vibrating member, and a vibration generating device connected to the passive vibrating member and configured to vibrate the passive vibrating member. The vibration generating device may include a support member having a curved surface portion, and a vibration device on the curved surface portion.

[0014] Specific matters according to various examples of the present specification other than the solutions to the problems mentioned above are included in the following description and drawings.

Advantages of the Invention

[0015] The device according to an embodiment of the present specification can improve the sound quality and enhance the immersion feeling of the viewer.

[0016] The device according to an embodiment of the present specification can use a display panel as a diaphragm to generate or output sound in the front direction of the display panel.

[0017] The device according to an embodiment of the present specification can improve the acoustic characteristics and / or sound pressure characteristics of the sound.

[0018] The device according to an embodiment of the present specification can improve the acoustic characteristics and / or sound pressure characteristics of the low-frequency band sound.

[0019] The device according to an embodiment of the present specification can output stereo sound, stereophonic sound, or multi-channel sound with improved sound pressure characteristics.

[0020] The problems to be solved, the means for solving the problems, and the contents of the effects mentioned above do not specify the essential features of the claims, and the scope of rights of the claims is not limited by the matters described in the content of the invention.

Brief Description of the Drawings

[0021]

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Mode for Carrying Out the Invention

[0022] The advantages and features of the present specification, and the methods for achieving them, will become clear by referring to an embodiment described in detail below together with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, but can be realized in various different forms. Merely, this embodiment is provided to complete the disclosure of the present specification and to fully inform those with ordinary knowledge in the technical field to which the present specification pertains of the scope of the invention. The present specification is defined only by the scope of the claims.

[0023] For the purpose of explaining the embodiments of the present specification, the shapes, sizes, ratios, angles, numbers, etc. shown in the drawings are exemplary and the present specification is not limited to the matters shown in the drawings. The same reference signs throughout the specification refer to the same components. Also, in explaining the present specification, when it is determined that a specific explanation of related known technologies would unnecessarily obscure the gist of the present invention, the detailed explanation thereof may be omitted. When terms such as "including", "having", "consisting of", "contain", "constitute (configure, or make up of)", "formed of", etc. mentioned in the present specification are used, unless "only" is used, one or more other parts can be added. When a component is expressed in the singular, it includes the case of including a plurality unless there is a particularly explicit description.

[0024] When interpreting components, it is interpreted to include the range of errors even without a separate explicit description.

[0025] When it comes to the description of positional relationships, for example, when the positional relationship between two parts is described by "on or above", "above", "under or below or beneath", "below", "near", "adjacent to", "beside", etc., unless "just", "immediate(ly)", "close(ly)", or "direct(ly)" is used, one or more other parts can be located between the two parts.

[0026] When it comes to the description of time relationships, for example, when the temporal before-and-after relationship is described by "after", "subsequent to", "next", "before", etc., unless "immediately" or "directly" is used, non - consecutive cases can also be included.

[0027] The first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component mentioned below may also be the second component within the technical concept of the present invention.

[0028] In describing the components of this specification, terms such as first, second, A, B, (a), (b), etc. can be used. Such terms are for distinguishing the components from other components, and the essence, order, sequence, or number of the components are not limited by such terms. When a component is described as "connected", "coupled", or "adhered" to another component, the component can be directly connected to the other component or can be connected, but it should be understood that there may be other components "intervening" between the components that can be indirectly connected or can be connected without specific explicit description. When describing a component or layer of this specification, when a component is described as "contacting" or "overlapping" another component or another layer, the component can directly contact or overlap the other component or another layer, but it should be understood that there may be other components or other layers "arranged" or "intervening" between the components or other layers that can be indirectly contacted or can be overlapped without specific explicit description.

[0029] The term "at least one" should be understood to include all combinations that can be presented from one or more related items. For example, the meaning of "at least one of the first item, the second item, and the third item" can include not only each of the first item, the second item, or the third item alone, but also all combinations of two or more items presented from among the first item, the second item, and the third item. The expression of the first component, the second component "and / or" the third component should be understood to include one of the first component, the second component, and the third component, or any or all combinations of the first component, the second component, and the third component. As an example, A, B, and / or C can be regarded as only A, only B, only C, any or some combination of A, B, and C, or all of A, B, and C.

[0030] The features of each of several embodiments of this specification can be partially or wholly combined or combined with each other, can be interlocked and driven, and each example can be implemented independently of each other and can also be implemented together in a related relationship. Unless otherwise defined, all terms (including technical and scientific terms) used in this specification have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. Furthermore, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with, for example, their meaning in the context of the related art, and should not be interpreted in an idealized or overly formal sense. For example, the term "part" can be applied to a separate circuit or structure configured to perform the functions described as would be understood by those of ordinary skill in the technical field to which the present invention belongs, an integrated circuit, a computational block of a circuit device, or a structure.

[0031] Hereinafter, looking at the embodiments of this specification in detail through the attached drawings and examples, it is as follows. The scale, size, and thickness of the components shown in the drawings may have scales different from the actual ones for the convenience of explanation, and thus are not limited to the scales, sizes, and thicknesses shown in the drawings. All components of each device according to all embodiments of this specification can be operably coupled or configured.

[0032] FIG. 1 is a diagram showing a device according to an embodiment of this specification. FIG. 2 is a rear view showing a device according to an embodiment of this specification.

[0033] Referring to FIGS. 1 and 2, the device according to an embodiment of this specification may be a display device, but the embodiments of this specification are not limited thereto.

[0034] The display device can include a display panel including a plurality of pixels for realizing black-and-white or color images, and a driving unit for driving the display panel. The pixel can be a sub-pixel for realizing any one of a plurality of colors constituting the color image.

[0035] The device according to an embodiment of the present specification can include a set electronic device or a set device such as a notebook computer, a television, a computer monitor, an automotive apparatus or other forms of a vehicle, an equipment apparatus including a display panel such as a liquid crystal display panel or an organic light emitting display panel, a mobile electronic apparatus such as a smartphone or an electronic pad, etc.

[0036] The device according to an embodiment of the present specification can include a vibration member 100, a support member 300, and a vibration device 500.

[0037] The vibration member 100 can be used as a diaphragm that generates or outputs one or more of sound and vibration. Accordingly, the vibration member 100 can be a diaphragm, a passive diaphragm, or a passive vibration member, but the embodiments of the present specification are not limited thereto.

[0038] The vibration member 100 according to an embodiment of the present specification may include a display panel for displaying an image. For example, the image may include an electronic image or a digital image or a still image or a video image, etc. For example, the display panel may include a liquid crystal display panel having a plurality of pixels for realizing a black-and-white or color image, and the type of the display panel is not limited thereto. For example, the display panel may include a display panel such as an organic light-emitting display panel, an electrophoretic display panel, a micro light-emitting diode display panel, an electro-wetting display panel, or a quantum dot light-emitting display panel. For example, in a liquid crystal display panel, a pixel may include a liquid crystal layer between a pixel electrode and a common electrode. For example, in an organic light-emitting display panel, a pixel may include an organic light-emitting element such as an organic light-emitting layer between a pixel electrode and a common electrode. Without being limited thereto, in a light-emitting display panel, a pixel may include an inorganic light-emitting element such as an inorganic light-emitting layer.

[0039] The support member 300 may be disposed on the back surface of the vibration member 100. For example, the support member 300 may be realized to cover the back surface of the vibration member 100. The support member 300 may include a back surface portion 310 that covers the back surface of the vibration member 100. The support member 300 may be made of a glass material, a plastic material, a metal material, or a laminated structure thereof. For example, the support member 300 may be expressed as a back cover, a back cover, a system back cover, a housing, a system housing, a set cover, a back set cover, an outermost cover, an outermost set cover, a product cover, or an outermost product cover, etc., but the embodiments of the present specification are not limited thereto.

[0040] The back surface portion 310 of the support member 300 can include a first region 300A1 and a second region 300A2. For example, the back surface portion 310 of the support member 300 can be divided into a first region 300A1 and a second region 300A2 with reference to a center line (or a first center line) (CL1) having a first length (or a horizontal length) parallel to the first direction (X). For example, each of the first region 300A1 and the second region 300A2 can have the same size or area on the back surface portion 310. For example, the center line (CL1) of the first length can be a first center line or a horizontal center line, and in the following description, it is referred to as the "first center line (CL1)". For example, the first region 300A1 can be a first back region, a left side region, or a back left side region, and the second region 300A2 can be a second back region, a right side region, or a back right side region. For example, the first direction (X) can be the X-axis direction in one of the long side longitudinal direction, the horizontal direction, the horizontal direction, or the XYZ axis direction of the support member 300.

[0041] In the back surface portion 310 of the support member 300, each of the first region 300A1 and the second region 300A2 can include a first sub-region 300B1 and a second sub-region 300B2 with reference to a center line (CL2) having a second length (or a vertical length) parallel to the second direction (Y) that intersects the first direction (X). For example, in each of the first region 300A1 and the second region 300A2, each of the first sub-region 300B1 and the second sub-region 300B2 can have the same size or area on the back surface portion 310. For example, the center line (CL2) of the second length can be a second center line or a vertical center line, and in the following description, it is referred to as the "second center line (CL2)". For example, the second direction (Y) can be the Y-axis direction in one of the short side longitudinal direction, the vertical direction, the vertical direction, or the XYZ axis direction of the support member 300.

[0042] The support member 300 can further include a reinforcing portion 320 disposed on the back surface portion 310.

[0043] The reinforcing portion 320 can be realized to reinforce the rigidity of the support member 300. Thereby, the reinforcing portion 320 can be a reinforcing member, a reinforcing pattern, a reinforcing pattern portion, a rigidity portion, a rigidity reinforcing member, a rigidity pattern, or a rigidity pattern portion, and the embodiments of the present specification are not limited thereto.

[0044] The reinforcing portion 320 can include a first reinforcing portion 321. The reinforcing portion 320 can include a first reinforcing portion 321 disposed along an edge portion of the back surface of the support member 300. For example, the first reinforcing portion 321 can be disposed along an edge portion of the back surface portion 310 of the support member 300. For example, the first reinforcing portion 321 can be realized by protruding from the edge portion of the back surface portion 310 of the support member 300 in the back surface direction of the support member 300 so as to have a preset height. The first reinforcing portion 321 can prevent or reduce the warping phenomenon of the device or the vibration member 100 by reinforcing the rigidity of the support member 300 or the rigidity of the back surface portion 310 of the support member 300. For example, the first reinforcing portion 321 can be a first reinforcing member, a first reinforcing pattern, a first reinforcing pattern portion, a first rigidity portion, a first rigidity reinforcing member, a first rigidity pattern, a first rigidity pattern portion, an edge reinforcing portion, an edge reinforcing pattern, or a frame reinforcing pattern, and the embodiments of the present specification are not limited thereto.

[0045] The reinforcing part 320 can further include a second reinforcing part 322. The reinforcing part 320 can further include a second reinforcing part 322 disposed at an intermediate portion of the back surface part 310 of the support member 300. The second reinforcing part 322 can be realized on the back surface part 310 of the support member 300 so as to have a preset length along one or more directions among the first direction (X) and the second direction (Y) intersecting the first direction (X). For example, the second reinforcing part 322 can be realized by protruding from the intermediate portion of the back surface part 310 in the back direction of the support member 300 so as to be parallel to the first direction (X). The second reinforcing part 322 can prevent or reduce the warping phenomenon generated in the intermediate portion of the device or the vibrating member 100 by further reinforcing the rigidity of the support member 300 or the rigidity of the back surface part 310 of the support member 300. For example, the second reinforcing part 322 can be a second reinforcing member, a second reinforcing pattern, a second reinforcing pattern part, a second rigid part, a second rigid reinforcing member, a second rigid pattern, a second rigid pattern part, an intermediate reinforcing part, an intermediate reinforcing member, an intermediate reinforcing pattern, or an intermediate reinforcing pattern part, and the embodiments of the present specification are not limited thereto.

[0046] The vibration device 500 can be realized to be disposed on the support member 300 and vibrate the vibrating member 100. The vibration device 500 according to an embodiment of the present specification can be a film vibration device or can include a film-type vibration device. Accordingly, the vibration device 500 can be represented as an acoustic generating device, an acoustic generating element, an acoustic generating member, an acoustic generator, a vibration source, an active vibrating member, an active vibrating element, an active vibration device, a piezoelectric vibration device, a piezoelectric vibrating member, a piezoelectric vibrating element, a piezoelectric oscillator, a piezoelectric vibration generator, a flexible vibration generator, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, a film actuator, a film-type piezoelectric composite actuator, a film speaker, a film-type piezoelectric speaker, or a film-type piezoelectric composite speaker, etc., but the embodiments of the present specification are not limited thereto.

[0047] The vibration device 500 can be supported by the support member 300. The vibration device 500 can be coupled or attached to the back surface portion 310 of the support member 300. For example, the vibration device 500 can be arranged in a state where a pre-stress is applied to the back surface portion 310 of the support member 300. For example, the vibration device 500 can be arranged in a non-planar (or non-flat) structure on the back surface portion 310 of the support member 300. For example, the vibration device 500 can be arranged in a curved surface shape or a curved surface structure on the back surface portion 310 of the support member 300.

[0048] The vibration device 500 according to an embodiment of the present specification can include a first vibration device 500-1 and a second vibration device 500-2.

[0049] Each of the first and second vibration devices 500-1 and 500-2 can be a film-type vibration device. Each of the first and second vibration devices 500-1 and 500-2 can be arranged at an edge portion of the back surface of the support member 300. For example, the first and second vibration devices 500-1 and 500-2 can be arranged parallel to each other with the second reinforcing portion 322 of the reinforcing portion 320 therebetween. For example, the first and second vibration devices 500-1 and 500-2 can be arranged to have a symmetric structure (or a left-right symmetric structure) or an asymmetric structure (or a left-right asymmetric structure) about the first center line (CL1) of the support member 300.

[0050] The first vibration device 500-1 can be arranged at an edge portion of the first back surface of the support member 300. For example, the first vibration device 500-1 can be arranged in the first region 300A1 of the support member 300. For example, the first vibration device 500-1 can be arranged to be biased toward the edge portion of the first back surface.

[0051] According to an embodiment of the present specification, the central portion (or the center portion) (CP) of the first vibration device 500-1 can be aligned with or located on the second center line (CL2) of the support member 300. For example, the central portion (or the center portion) (CP) of the first vibration device 500-1 is on the second center line (CL2) within the first region 300A1 of the support member 300, between the first center line (CL1) of the support member 300 and the first side wall (or the first short side or the first side) of the support member 300, and can be arranged. For example, the first vibration device 500-1 can be arranged between the first reinforcing portion 321 and the second reinforcing portion 322 within the first region 300A1 of the support member 300. For example, the first vibration device 500-1 can be arranged closer to the first side wall of the support member 300 than the first center line (CL1) of the support member 300 within the first region 300A1 of the support member 300.

[0052] According to another embodiment of the present specification, the central portion (or the center portion) (CP) of the first vibration device 500-1 can be separated from the second center line (CL2) of the support member 300. For example, the central portion (or the center portion) (CP) of the first vibration device 500-1 can be located within the first sub-region 300B1 of the first region 300A1. For example, the central portion (or the center portion) (CP) of the first vibration device 500-1 can be located in the first sub-region 300B1 of the first region 300A1 that is separated from the second center line CL2 of the support member 300 by a preset separation distance (ΔL). Thereby, the acoustic characteristics and / or sound pressure characteristics in the low frequency band generated by the vibration of the first vibration device 500-1 can be improved.

[0053] When the device according to the embodiment of this specification is applied to a display device, since the lowermost part (or the lowermost end) of the second sub-region 300B2 of the support member 300 can act as a pedestal, the more it goes from the lowermost part of the second sub-region 300B2 to the uppermost part of the first sub-region 300B1 in the vibration of the support member 300, the freer it can move or the freer end that can vibrate can be obtained. Thereby, when the central part (CP) of the first vibration device 500-1 is located in the first sub-region 300B1 separated from the second center line (CL2) of the support member 300, the vibration amplitude (or displacement amplitude) of the first vibration device 500-1 with respect to the same drive signal can be increased compared to when the central part (CP) of the first vibration device 500-1 is located on the second center line CL2 of the support member 300. Therefore, the acoustic characteristics and / or sound pressure characteristics in the low frequency band generated by the vibration of the first vibration device 500-1 can be improved.

[0054] The second vibration device 500-2 can be arranged at the edge portion of the second back surface of the support member 300. For example, the second vibration device 500-2 can be arranged in the second region 300A2 of the support member 300. For example, the second vibration device 500-2 can be arranged so as to be biased to the edge portion of the second back surface.

[0055] According to the embodiment of this specification, the central part (or the center part) (CP) of the second vibration device 500-2 can be aligned with or located on the second center line (CL2) of the support member 300. For example, the central part (or the center part) (CP) of the second vibration device 500-2 can be arranged on the second center line (CL2) within the second region 300A2 of the support member 300, between the first center line (CL1) of the support member 300 and the second side wall (or the second short side or the second side) of the support member 300. For example, the second vibration device 500-2 can be arranged between the first reinforcing part 321 and the second reinforcing part 322 within the second region 300A2 of the support member 300. For example, the second vibration device 500-2 can be arranged closer to the second side wall of the support member 300 than the first center line (CL1) of the support member 300 within the second region 300A2 of the support member 300.

[0056] According to other embodiments of the present specification, the central part (or the center part) (CP) of the second vibration device 500-2 may be separated from the second center line (CL2) of the support member 300. For example, the central part (or the center part) (CP) of the second vibration device 500-2 may be located within the first sub-region 300B1 of the second region 300A2. For example, the central part (or the center part) (CP) of the second vibration device 500-2 may be located in the first sub-region 300B1 of the second region 300A2 that is separated from the second center line CL2 of the support member 300 by a preset separation distance (ΔL). Thereby, the acoustic characteristics and / or sound pressure characteristics in the low frequency range generated by the vibration of the second vibration device 500-2 can be improved.

[0057] Each of the first vibration device 500-1 and the second vibration device 500-2 vibrates by a drive signal including an acoustic signal (or a voice signal) input from the outside or including an acoustic signal and a haptic feedback signal, and vibrates the vibration member 100, thereby generating an acoustic sound (S) due to the vibration of the vibration member 100 or generating haptic feedback (or haptic vibration) in response to a touch of a user.

[0058] The device according to an embodiment of the present specification can generate acoustic (S) and / or haptic feedback (or haptic vibration) by the vibration of the vibration member 100 driven by the vibration device 500. For example, the acoustic (S) generated by the vibration of the vibration member 100 can be output in the front direction of the vibration member 100 or the front direction of the screen. For example, the device according to an embodiment of the present specification can output the left acoustic and the right acoustic in the front direction of the vibration member 100 or the front direction of the screen by the vibration of the vibration member 100 driven by each of the first vibration device 500-1 and the second vibration device 500-2, and can realize an acoustic, for example, a stereo acoustic, through the left acoustic and the right acoustic. Therefore, the device according to the embodiment of the present specification uses the vibration member 100 including the display panel as a diaphragm for acoustic generation (or acoustic output), and outputs the acoustic in the front direction of the vibration member 100 or the front direction of the screen, so that more accurate acoustic transmission is possible, the sound quality and / or the acoustic are improved, and the immersion feeling of the viewer can be enhanced.

[0059] FIG. 3 is a cross-sectional view taken along line I-I' shown in FIG. 1. It is a view showing a cross-sectional structure of a support member according to an embodiment of the present specification.

[0060] Referring to FIG. 3, in the device according to an embodiment of the present specification, the support member 300 can include a back surface portion 310, a side surface portion 330, and a curved surface portion 350.

[0061] The back surface portion 310 can be disposed on the back surface of the vibration member 100. The back surface portion 310 can include a bottom surface (or support surface) 310a that supports the vibration member 100. Since the back surface portion 310 is substantially the same as the back surface portion 310 described with reference to FIGS. 1 and 2, duplicate description thereof can be omitted. The back surface portion 310 can include the reinforcing portion described with reference to FIGS. 1 and 2.

[0062] The side surface portion 330 can be connected to the edge portion of the back surface portion 310. The side surface portion 330 can be realized to support the vibration member 100. By being realized to have a preset height along the edge portion of the back surface portion 310, the side surface portion 330 can provide a storage space on the bottom surface 310a of the back surface portion 310. For example, the side surface portion 330 can be realized by bending from the edge portion of the back surface portion 310. For example, the side surface portion 330 can be a side wall portion or a side surface cover portion, and the embodiments of this specification are not limited thereto.

[0063] The curved surface portion 350 can be realized on the back surface portion 310. By vibrating together with the vibration of the vibration device 500, the curved surface portion 350 can vibrate the vibration member 100. For example, the curved surface portion 350 can be configured to indirectly vibrate the vibration member 100 by vibrating due to the vibration of the vibration device 500.

[0064] According to an embodiment of this specification, the curved surface portion 350 can be realized on the back surface portion 310 to include a preset curvature. For example, the curved surface portion 350 can include a curved surface structure protruding from the back surface portion 310 in the direction of the back surface of the support member 300. For example, the curved surface portion 350 can protrude from the back surface portion 310 to have a curved surface shape with one curvature (or a single curvature). For example, the curved surface portion 350 can have a curved surface structure with one curvature (or a single curvature) without an inflection point. For example, the curved surface portion 350 can protrude convexly from the back surface portion 310 in the direction of the back surface of the support member 300. For example, the curved surface portion 350 can have a single convex curved surface shape with a certain curvature. For example, the curved surface portion 350 can be a curved surface protrusion, a bottom surface curved surface protrusion, a back surface curved surface portion, a curved surface structure, a curvature structure, a forming portion, or a stress application portion, and the embodiments of this specification are not limited thereto. For example, the curved surface portion 350 can be a curved surface portion of the first shape, a concave portion, a concave curved surface portion, a concave arch portion, a groove portion, or a concave groove portion with reference to the bottom surface 310a of the back surface portion 310 facing the vibration member 100, and the embodiments of this specification are not limited thereto.

[0065] According to an embodiment of the present specification, the central portion of the curved surface portion 350 can be separated from the back surface of the vibrating member 100. For example, the height (or distance) between the back surface of the vibrating member 100 and the curved surface portion 350 can increase as it approaches the central portion from the edge portion of the curved surface portion 350. According to an embodiment of the present specification, the curved surface portion 350 can be realized to have a first height (H1) from the back surface portion 310. For example, the first height (H1) of the curved surface portion 350 can be the shortest distance between the bottom surface 310a of the back surface portion 310 and the rearmost surface of the curved surface portion 350.

[0066] According to an embodiment of the present specification, the first height (H1) of the curved surface portion 350 can be set within a range where stress can be applied to the vibration device 500 in advance. For example, the first height (H1) of the curved surface portion 350 can be 2 mm to 200 mm, but the embodiments of the present specification are not limited thereto and can be changed according to the size of the vibration device 500. The first height (H1) of the curved surface portion 350 may be smaller than the second height (H2) of the vibrating member 100. For example, the second height (H2) of the vibrating member 100 can be the shortest distance between the bottom surface 310a of the back surface portion 310 and the uppermost surface (or top surface) of the vibrating member 100. For example, when the first height (H1) of the curved surface portion 350 is greater than the second height (H2) of the vibrating member 100, the thickness of the device or the display device may increase, which may make it difficult to achieve slimming (or having a thin thickness).

[0067] The curved surface portion 350 according to an embodiment of the present specification can include a first curved surface portion 350a and a second curved surface portion 350b.

[0068] The first curved surface portion 350a can be realized on the back surface portion 310 corresponding to the first region 300A1 of the support member 300. For example, the first curved surface portion 350a can be configured to support the first vibration device 500-1. The first curved surface portion 350a can be realized to vibrate together with the vibration of the first vibration device 500-1.

[0069] The second curved surface portion 350b can be realized on the back surface portion 310 corresponding to the second region 300A2 of the support member 300. For example, the second curved surface portion 350b can support the second vibration device 500-2. The second curved surface portion 350b can be realized so as to vibrate together with the vibration of the second vibration device 500-2.

[0070] The vibration device 500 can be coupled or attached to the curved surface portion 350. For example, the vibration device 500 can have a size smaller than that of the curved surface portion 350. The vibration device 500 can be coupled or attached to the curved surface portion 350 so as to have an equiangular shape (an equiangular shape or a conformal shape) along the curvature of the curved surface portion 350. However, the embodiments in this specification are not limited thereto. For example, the vibration device 500 can be coupled or attached to the curved surface portion 350 so as to have an equiangular shape that follows the contour or morphology of the curvature of the curved surface portion 350. For example, the vibration device 500 can have a non-equiangular shape (a non-equiangular shape or a non-conformal shape) that does not follow the curvature of the curved surface portion 350, or can be coupled or attached to the curved surface portion 350 so as to have a curvature different from that of the curved surface portion 350. For example, the vibration device 500 can be coupled or attached to the curved surface portion 350 so as to have a non-equiangular shape that does not follow the contour of the curvature of the curved surface portion 350.

[0071] According to an embodiment of the present specification, the vibration device 500 can have or receive prestress by being coupled to or attached to the curved surface portion 350. For example, the vibration device 500 can be maintained in a state of having or receiving prestress by the curved surface portion 350 by being coupled to or attached to the curved surface portion 350. For example, the vibration device 500 can receive or include tensile stress due to the curvature of the curved surface portion 350. For example, the curved surface portion 350 can be realized to apply only tensile stress to the vibration device 500 in order to improve the vibration characteristics of the vibration device 500. For example, when the vibration device 500 receives compressive stress rather than tensile stress by the curved surface portion 350, the vibration characteristics of the vibration device 500 may decrease.

[0072] According to an embodiment of the present specification, the vibration device 500 can increase the second moment of inertia by receiving prestress (or pre-tensile stress) by the curved surface portion 350 or including a state of being bent into a curved shape. The vibration device 500 can reduce the number of resonance frequencies generated during vibration due to the increase in the second moment of inertia, thereby reducing the number of nodes (or nodal points or connection points) and improving the acoustic characteristics and / or sound pressure characteristics. For example, the vibration device 500 can improve the sound pressure characteristics and / or acoustic characteristics by correcting the mode shape due to the decrease in the resonance frequency due to the increase in the second moment of inertia.

[0073] According to an embodiment of the present specification, the vibration device 500 can have its vibration direction (or displacement direction or bending direction or driving direction) unified in one direction and the dynamic displacement expanded by receiving pre-stress (or pre-tensile stress) by the curved surface portion 350 or vibrating in a state bent into a curved surface shape. As a result, the sound generated by the vibration of the vibration device 500 can be concentrated in the central direction of the curved surface portion 350, and the sound pressure transmitted to the vibration member 100 can be increased or amplified. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be improved.

[0074] According to an embodiment of the present specification, the first vibration device 500-1 of the vibration device 500 can be coupled or attached to the first curved surface portion 350a. The first vibration device 500-1 can be coupled or attached to the first curved surface portion 350a so as to have an isogonal shape following the curvature of the first curved surface portion 350a as it is, and the embodiments of the present specification are not limited thereto. For example, the first vibration device 500-1 can be coupled or attached to the first curved surface portion 350a so as to have an isogonal shape following the contour of the curvature of the first curved surface portion 350a as it is. For example, the first vibration device 500-1 can have a non-isogonal shape that does not follow the curvature of the first curved surface portion 350a as it is or a curvature different from the curvature of the first curved surface portion 350a and can be coupled or attached to the first curved surface portion 350a. For example, the first vibration device 500-1 can be coupled or attached to the first curved surface portion 350a so as to have a non-isogonal shape that does not follow the contour of the curvature of the first curved surface portion 350a as it is. As a result, the first vibration device 500-1 can vibrate the first curved surface portion 350a and generate sound or sound waves by receiving pre-stress (or pre-tensile stress) by the first curved surface portion 350a or vibrating in a state bent into a curved surface shape. As a result, the first region of the vibration member 100 superimposed on the first vibration device 500-1 can vibrate by receiving the transmission of sound or sound waves generated by the vibration of the first curved surface portion 350a, thereby generating or outputting acoustic and / or haptic feedback.

[0075] The second vibration device 500-2 of the vibration device 500 can be coupled to or attached to the second curved surface portion 350b. The second vibration device 500-2 can be coupled to or attached to the second curved surface portion 350b so as to have an isogonal shape following the curvature of the second curved surface portion 350b as it is, and the embodiments of the present specification are not limited thereto. For example, the second vibration device 500-2 can be coupled to or attached to the second curved surface portion 350b so as to have an isogonal shape along the contour of the curvature of the second curved surface portion 350b. For example, the second vibration device 500-2 can be coupled to or attached to the second curved surface portion 350b so as to have a non-isogonal shape that does not follow the curvature of the second curved surface portion 350b as it is, or has a curvature different from the curvature of the second curved surface portion 350b. For example, the second vibration device 500-2 can be coupled to or attached to the second curved surface portion 350b so as to have a non-isogonal shape that does not follow the contour of the curvature of the second curved surface portion 350b as it is. Thereby, the second vibration device 500-2 can vibrate the second curved surface portion 350b and generate sound or sound waves by being configured to receive pre-stress (or pre-tensile stress) by the second curved surface portion 350b or vibrate in a state bent into a curved surface shape. Thereby, the second region of the vibration member 100 superimposed on the second vibration device 500-2 can generate or output acoustic and / or haptic feedback by being vibrated by receiving the transmission of the sound or sound waves generated by the vibration of the second curved surface portion 350b.

[0076] Figs. 4A to 4C are rear perspective views showing a support member according to an embodiment of the present specification shown in Figs. 1 to 3. Figs. 4A to 4C are views showing curved surface portions according to the first to third embodiments of the present specification.

[0077] Referring to FIG. 4A, the curved surface portion 350 according to the first embodiment of the present specification or the first and second curved surface portions 350a, 350b may have a square shape in plan view and may include an arch shape in cross-sectional view. For example, the curved surface portion 350 or the first and second curved surface portions 350a, 350b may include a first side and a second side. For example, the curved surface portion 350 or the first and second curved surface portions 350a, 350b may include a pair of first sides having a first length (L1) and a pair of second sides having a second length (L2) that is the same as the first length (L1). The curved surface of the curved surface portion 350 according to the first embodiment of the present specification or the first and second curved surface portions 350a, 350b may be formed in an arch shape having a preset curvature between a pair of second sides. For example, the first length (L1) may be parallel to the first direction (X) and may be a first direction length, a horizontal length, or a horizontal length. For example, the second length (L2) may be parallel to the second direction (Y) and may be a second direction length, a vertical length, or a vertical length.

[0078] Referring to FIG. 4B, the curved surface portion 350 according to the second embodiment of the present specification or the first and second curved surface portions 350a, 350b may have a rectangular shape in plan view and may include an arch shape in cross-sectional view. For example, the curved surface portion 350 or the first and second curved surface portions 350a, 350b may include a short side and a long side. For example, the curved surface portion 350 or the first and second curved surface portions 350a, 350b may include a pair of short sides having a third length (L3) and a pair of long sides having a fourth length (L4) that is longer than the third length (L3). The curved surface of the curved surface portion 350 according to the second embodiment of the present specification or the first and second curved surface portions 350a, 350b may be formed in an arch shape having a preset curvature between a pair of long sides. For example, the third length (L3) may be parallel to the first direction (X) and may be a first direction length, a horizontal length, or a horizontal length. For example, the second length (L2) may be a short side length, parallel to the second direction (Y), and may be a long side length, a second direction length, a vertical length, or a vertical length.

[0079] Referring to FIG. 4C, the curved surface portion 350 according to the third embodiment of the present specification, or the first and second curved surface portions 350a and 350b, may have a rectangular shape in plan view and may include an arch shape in cross-sectional view. For example, the curved surface portion 350, or the first and second curved surface portions 350a and 350b, may include a long side and a short side. For example, the curved surface portion 350, or the first and second curved surface portions 350a and 350b, may include a pair of long sides having a fifth length (L5) and a pair of short sides having a sixth length (L6) shorter than the fifth length (L5). The curved surface of the curved surface portion 350 according to the third embodiment of the present specification, or the first and second curved surface portions 350a and 350b, may be formed in an arch shape having a preset curvature between a pair of short sides. For example, the fifth length (L5) may be parallel to the first direction (X) and may be a long side length, a first direction length, a horizontal length, or a horizontal length. For example, the sixth length (L6) may be parallel to the second direction (Y) and may be a short side length, a second direction length, a vertical length, or a vertical length.

[0080] FIG. 5 is a cross-sectional view taken along line II-II' shown in FIG. 2, and is a diagram for explaining the apparatus according to the first embodiment of the present specification.

[0081] Referring to FIG. 5, the apparatus 1 according to the first embodiment of the present specification may include a vibration member 100, a support member 300, and a vibration device 500.

[0082] The vibration member 100 may include a display member 110 that displays an image or directly outputs sound while displaying an image. The display member 110 may include a display panel 111 and a guide member 115.

[0083] The display panel 111 may be a liquid crystal display panel, but the embodiments of the present specification are not limited thereto. For example, the display panel 111 may be a light-emitting display panel, an electrophoretic display panel, a micro light-emitting diode display panel, an electronic wetting display panel, or a quantum dot light-emitting display panel.

[0084] When the display panel 111 is a liquid crystal display panel, the vibration member 100 can further include a backlight 113 disposed between the display panel 111 and the support member 300.

[0085] The display panel 111 according to the embodiments of the present specification can include a first substrate 111a, a second substrate 111b, a first polarizing member 111c, and a second polarizing member 111d.

[0086] The first substrate 111a is an upper substrate or an array substrate of thin film transistors, and can include a pixel array (or a display unit or a display area) having a plurality of pixels formed in a pixel region intersected by a plurality of gate lines and / or a plurality of data lines. Each of the plurality of pixels can include a thin film transistor connected to a gate line and / or a data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

[0087] The first substrate 111a can further include a pad portion provided at a first edge (or a first non-display portion) and connected to a panel driving circuit, and a gate driving circuit provided at a second edge (or a second non-display portion) and connected to a plurality of gate lines. For example, the panel driving circuit can be connected to the pad portion and disposed on the back surface of the support member 300. For example, the panel driving circuit can be disposed in the second sub-region 300B2 of each of the first and second regions 300A1, 300A2 of the support member 300 shown in FIG. 2. The panel driving circuit can be covered or protected by a cover shield 400. For example, the cover shield 400 can be coupled or fixed to the second sub-region 300B2 of each of the first and second regions 300A1, 300A2 of the support member 300 so as to cover the entire remaining portion of the panel driving circuit except for the user connector, thereby protecting the panel driving circuit.

[0088] The second substrate 111b can be a lower substrate or a color filter array substrate, and includes a pixel opening pattern including an opening region that overlaps with the pixel region formed on the first substrate 111a, and a color filter layer formed in the opening region. The second substrate 111b can be joined to the remaining portion of the first substrate 111a except for the first edge thereof with a liquid crystal layer interposed therebetween by a sealant.

[0089] The liquid crystal layer is disposed or interposed between the first substrate 111a and the second substrate 111b, and can be composed of liquid crystal in which the alignment direction of liquid crystal molecules is changed by an electric field formed by a data voltage applied to a pixel electrode and a common voltage for each pixel.

[0090] The first polarizing member 111c is attached to the lower surface of the second substrate 111b and can polarize the light incident from the backlight 113 and traveling through the liquid crystal layer. The second polarizing member 111d is attached to the upper surface of the first substrate 111a and can polarize the light transmitted through the first substrate 111a and emitted to the outside.

[0091] In the display panel 111 according to the embodiment of the present specification, the liquid crystal layer is driven by an electric field formed in each pixel by a data voltage and a common voltage applied to each pixel, so that an image can be displayed by the light transmitted through the liquid crystal layer.

[0092] In the display panel 111 according to the embodiment of the present specification, since the first substrate 111a made of an array substrate of thin film transistors constitutes the video display surface, the entire front surface can be exposed to the outside without being blocked by a separate mechanism (or a separate structure).

[0093] The display panel 111 according to another embodiment of this specification may be such that the first substrate 111a is a color filter array substrate and the second substrate 111b is an array substrate of thin film transistors. For example, the display panel 111 according to another embodiment of this specification may have a form in which the display panel 110 according to the embodiment of this specification is upside down. In this case, the pad portion of the display panel 111 according to another embodiment of this specification may be blocked by a separate mechanism (or a separate structure).

[0094] The display panel 111 according to an embodiment of this specification may further include a buffer member 119. The buffer member 119 may be formed to surround one or more sides of the display panel 111. The buffer member 119 can serve to protect the side surface of the display panel 111 from external impacts or prevent light leakage from the side surface of the display panel 111.

[0095] The backlight (or lighting unit or backlight unit) 113 is disposed on the back surface of the display panel 111 and can irradiate light on the back surface of the display panel 111. The backlight 113 according to an embodiment of this specification may include a light guide plate 113a, a light source unit, a reflective sheet 113b, and an optical sheet unit (or optical member) 113c, and the embodiments of this specification are not limited thereto.

[0096] The light guide plate (or light guide member) 113a is disposed on the support member 300 so as to overlap with the display panel 111 and may include a light incident surface provided on at least one side. The light guide plate 113a may include a light-transmissive plastic or glass material, and the embodiments of this specification are not limited thereto. The light guide plate 113a can cause the light incident from the light source unit through the light incident surface to travel (or emit light) toward the display panel 111.

[0097] The light source unit can irradiate light onto the light incident surface provided on the light guide plate 113a. The light source unit can be arranged on the support member 300 so as to overlap with the first edge portion of the display panel 111. The light source unit can include a plurality of light emitting diode elements realized on a printed circuit board for the light source and irradiating light onto the light incident surface of the light guide plate 113a.

[0098] The reflection sheet 113b can be arranged on the support member 300 so as to cover the back surface of the light guide plate 113a. The reflection sheet 113b can minimize light loss by reflecting the light incident from the light guide plate 113a back toward the light guide plate 113a.

[0099] The optical sheet unit 113c is arranged on the front surface of the light guide plate 113a and can improve the luminance characteristics of the light emitted from the light guide plate 113a. The optical sheet unit 113c according to an embodiment of the present specification may include a lower diffusion sheet, a lower prism sheet, and an upper prism sheet, but the embodiments of the present specification are not limited thereto. For example, the optical sheet unit 113c can be composed of a single layer including a lower diffusion sheet, a lower prism sheet, and an upper prism sheet. The embodiments of the present specification are not limited thereto, and the optical sheet unit 113c can be composed of a combination of one or more laminations selected from a diffusion sheet, a prism sheet, a double brightness enhancement film, and a lenticular sheet, or can be composed of a single composite sheet having light diffusion and condensing functions.

[0100] The guide member 115 is arranged at the edge portion of the back surface of the display panel 111 and can support the edge portion of the back surface of the display panel 111. The guide member 115 can be supported or housed on the support member 300 so as to overlap with the edge portion of the back surface of the display panel 111. The guide member 115 can be arranged under the back surface of the display panel 111 so as not to protrude outside each side surface of the display panel 111.

[0101] The guide member (or support frame) 115 according to an embodiment of the present specification may include a guide frame 115a and a guide side portion 115b. For example, the guide member 115 may have a cross-sectional structure in the shape of a "┓" character (gamma shape) or a "┏" character (rotated "┓" character) by a coupling structure (or connection structure) between the guide frame 115a and the guide side portion 115b, but the embodiments of the present specification are not limited thereto.

[0102] The guide frame 115a may be connected to an edge portion of the back surface of the display panel 111 and supported by the support member 300. For example, the guide frame 115a may have a rectangular band (or belt) shape having an opening that overlaps with the remaining intermediate portion excluding the edge portion of the back surface of the display panel 111, but the embodiments of the present specification are not limited to this shape. For example, the guide frame 115a may be in direct contact with the uppermost surface of the backlight 113, for example, the uppermost surface of the optical sheet portion 113c, or may be spaced apart from the uppermost surface of the optical sheet portion 113c by a certain distance.

[0103] The guide side portion 115b may be connected to the guide frame 115a and wrap one side or side surface of the support member 300. For example, the guide side portion 115b may be bent from the guide frame 115a toward the side surface of the support member 300 to surround the side surface of the support member 300, or may be surrounded by the side surface of the support member 300.

[0104] The guide member 115 according to an embodiment of the present specification can be made of a plastic material, a metal material, or a mixed material of a plastic material and a metal material, but the embodiments of the present specification are not limited thereto. For example, the guide member 115 can serve as a vibration transmission member that transmits sound vibrations generated by the vibration device 500 to the edge portion of the display panel 111. Therefore, the guide member 115 can transmit the sound vibrations generated by the vibration device 500 to the display panel 111 without loss while maintaining the rigidity of the display panel 111. For example, the guide member 115 can include a metal material in order to transmit the sound vibrations generated by the vibration device 500 to the display panel 111 while maintaining the rigidity of the display panel 111, but the embodiments of the present specification are not limited thereto.

[0105] The guide member 115 according to an embodiment of the present specification can be connected or coupled to the edge portion of the back surface of the display panel 111 via a coupling member (or panel coupling member) 114. The coupling member 114 is disposed between the edge portion of the back surface of the display panel 111 and the guide member 115 and can dispose or couple the display panel 111 to the guide member 115. For example, the coupling member 114 can include an acrylic-based or urethane-based adhesive member, but the embodiments of the present specification are not limited thereto. For example, the coupling member 114 can include an acrylic-based adhesive member having relatively excellent adhesive strength and high hardness so that the vibration of the guide member 115 is well transmitted to the display panel 111. For example, the coupling member 114 can include a double-sided foam adhesive pad having an acrylic-based adhesive layer or an acrylic-based adhesive resin cured layer.

[0106] The front surface of the coupling member 114 according to an embodiment of the present specification can be disposed on the second substrate 111b or the first polarizing member 111c of the display panel 111. The coupling member 114 can be directly coupled to the edge portion of the back surface of the second substrate 111b in order to improve the adhesive force with the display panel 111. For example, the coupling member 114 can prevent side light leakage generated in the first polarizing member 111c by surrounding the side surface of the first polarizing member 111c.

[0107] The coupling member 114 can have a certain thickness (or height). Thereby, the coupling member 114 can provide a sound transmission space (STS) between the display panel 111 and the backlight 113 together with the guide frame 115a of the guide member 115. The coupling member 114 can be formed in a four-sided sealed or closed-loop shape on the guide frame 115a of the guide member 115, and the embodiments of this specification are not limited thereto. For example, the coupling member 114 seals the sound transmission space (STS) provided between the rearmost surface of the display panel 111 and the uppermost surface of the backlight 113 that face each other across the opening of the guide member 115, thereby preventing or minimizing the leakage (or loss) of the sound pressure transmitted to the sound transmission space (STS). The sound transmission space (STS) can be a sound pressure generation space where sound pressure is generated by the vibration of the backlight 113, or a panel vibration space that smooths the vibration of the display panel 111. For example, the sound transmission space (STS) can be a sound wave transmission part or an acoustic transmission part, but the embodiments of this specification are not limited thereto.

[0108] The support member 300 can be configured to support the vibration member 100. The support member 300 can include the back surface portion 310, the side surface portion 330, and the curved surface portion 350 described with reference to FIG. 3.

[0109] The back surface portion 310 can be configured to support or house the backlight 113 of the vibration member 100. The bottom surface 310a (or the floor surface or the support surface) of the back surface portion 310 can contact or directly contact the back surface of the backlight 113. For example, the bottom surface 310a of the back surface portion 310 can contact or directly contact the reflection sheet 113b of the backlight 113.

[0110] The side surface portion 330 can be configured to support the guide member 115 of the vibration member 100. The side surface of the side surface portion 330 can be surrounded by the guide side portion 115b of the guide member 115. Thereby, the vibration of the vibration device 500 can be transmitted to the edge portion of the display panel 111 via the side surface portion 330 of the support member 300, the guide member 115, and the coupling member 114. For example, the side surface portion 130 can be a side wall portion or a side surface cover portion, and the embodiments of the present specification are not limited thereto.

[0111] The curved surface portion 350 can be realized on the back surface portion 310. Since the curved surface portion 350 is the same as the description with reference to FIGS. 3, 4A to 4C, the overlapping description thereof can be omitted.

[0112] The device 1 according to the first embodiment of the present specification can further include a gap space (GS) provided between the curved surface portion 350 of the support member 300 and the vibration member 100.

[0113] The gap space (GS) can be provided between the curved surface portion 350 of the support member 300 and the back surface of the vibration member 100. For example, the gap space (GS) can be provided between the curved surface portion 350 and the backlight 113 of the vibration member 100. For example, the gap space (GS) can be provided between the curved surface portion 350 and the reflection sheet 113b of the backlight 113. The gap space (GS) can include a space where sound or sound pressure is generated by the vibration of the curved surface portion 350, a space that smooths the vibration of the curved surface portion 350, or a space where sound waves generated by the vibration of the vibration device 500 are propagated to the vibration member 100. For example, the gap space (GS) can be an air gap, a sound pressure generation space, an acoustic space, a sound pressure space, a resonance portion, a resonance box, a box sound wave propagation path, an acoustic energy incident portion, or an acoustic path, and the embodiments of the present specification are not limited thereto.

[0114] The vibration device 500 can be disposed on or coupled to the curved surface portion 350. For example, the vibration device 500 can be disposed on or coupled to the back surface of the curved surface portion 350. The vibration device 500 disposed on or coupled to the curved surface portion 350 includes the first and second vibration devices 500-1 and 500-2, which are the same as or substantially the same as those described with reference to FIGS. 2 to 4C, and thus duplicate descriptions thereof can be omitted.

[0115] The vibration device 500 is configured to receive prestress (or pre-tensile stress) by the curved surface portion 350 or to vibrate in a state of being bent into a curved surface shape to vibrate the curved surface portion 350, so that the vibration member 100 is vibrated by the vibration of the curved surface portion 350 to generate and output acoustic and / or haptic feedback. For example, the vibration device 500 vibrates in response to a drive signal to vibrate the curved surface portion 350, whereby the acoustic (or sound wave) generated by the vibration of the curved surface portion 350 is output to the gap space (GS), and the acoustic generated by the vibration of the backlight 113 due to the acoustic in the gap space (GS) is output to the sound transmission space (STS), and acoustic and / or haptic feedback can be generated by the vibration of the display panel 111 due to the acoustic in the sound transmission space (STS).

[0116] Therefore, the device 1 according to the first embodiment of the present specification includes the vibration device 500 that receives prestress (or pre-tensile stress) or vibrates in a state of being bent into a curved surface shape, so that the second moment of inertia of the cross-section of the vibration device 500 increases, or the vibration direction of the vibration device 500 is unified in one direction, and thus the acoustic characteristics and / or sound pressure characteristics generated by the vibration member 100 vibrated by the vibration of the vibration device 500 can be improved.

[0117] FIG. 6 is a perspective view showing the vibration device according to the first embodiment of the present specification. FIG. 6 shows the vibration device shown in FIGS. 2 to 5 or the first and second vibration devices.

[0118] Referring to FIG. 6, the vibration device 500 or the first and second vibration devices 500-1 and 500-2 according to an embodiment of the present specification may include a vibration generator 510 and a connecting member 520.

[0119] The vibration generator 510 may be configured to vibrate (or displace) by a driving signal (or an electrical signal or a voice signal) applied thereto, so as to vibrate (or displace) the vibration member 100. For example, the vibration generator 510 may be a vibration element, a vibration structure, a vibrator, a vibration generating element, an acoustic generator, an acoustic element, an acoustic generating structure, or an acoustic generating element, but the embodiments of the present specification are not limited thereto.

[0120] The vibration generator 510 according to an embodiment of the present specification may include a piezoelectric material (or an electroactive material) having piezoelectric characteristics. The vibration generator 510 can vibrate (or displace) itself or vibrate (or displace) the vibration member by the vibration (or displacement) of the piezoelectric material caused by an electrical signal applied to the piezoelectric material. For example, the vibration generator 510 can vibrate (or displace) by alternately repeating contraction and / or expansion by the piezoelectric effect (or piezoelectric characteristics). For example, the vibration generator 510 can vibrate (or displace) in the vertical direction (or thickness direction) (Z) by the inverse piezoelectric effect and / or by alternately repeating contraction and expansion.

[0121] The vibration generator 510 may be configured to have flexibility. For example, the vibration generator 510 may be configured to bend into a non-planar shape including a curved surface.

[0122] The vibrator 510 according to an embodiment of the present specification may include a rectangular shape having a first length parallel to the first direction (X) and a second length parallel to the second direction (Y). For example, the vibrator 510 may include a square shape in which the first length and the second length are equal, or a rectangular shape in which the first length and the second length are different. For example, a vibration device including the vibrator 510 having a square shape may be coupled or attached to the curved surface portion 350 of the support member 300 shown in FIG. 4A. For example, a vibration device including the vibrator 510 having a rectangular shape may be coupled or attached to the curved surface portion 350 of the support member 300 shown in FIG. 4B or FIG. 4C.

[0123] The connecting member 520 may be connected or coupled to either the first surface S1 of the vibrator 510 or the second surface S2 different from (or opposite to) the first surface S1. For example, in the vibrator 510, the first surface S1 may be an upper surface, a front surface, an upper portion surface, or a surface. In the vibrator 510, the second surface S2 may be a lower surface, a back surface, a rear surface, a lower portion surface, or a back surface. For example, in the vibrator 510, the first surface S1 may be disposed closer to the connecting member 520 than the second surface S2. For example, the connecting member 520 may be a first connecting member, an adhesive member, or a first adhesive member.

[0124] The connecting member 520 according to an embodiment of the present specification may include an adhesive layer (or an adhesive layer) having excellent adhesion or adhesive force. For example, the connecting member 520 may include a double-sided adhesive tape, a double-sided adhesive foam pad, or an adhesive sheet. For example, when the connecting member 520 includes an adhesive sheet (or an adhesive layer), the connecting member 520 may include only the adhesive layer or the adhesive layer without a base member such as a plastic material.

[0125] The adhesive layer (or pressure-sensitive adhesive layer) of the connecting member 520 according to an embodiment of the present specification may include epoxy, acrylic, silicone, or urethane, but the embodiments of the present specification are not limited thereto. The adhesive layer (or pressure-sensitive adhesive layer) of the connecting member 520 according to other embodiments of the present specification may include PSA (pressure sensitive adhesive), OCA (optically clear adhesive), or OCR (optically clear Resin), but the embodiments of the present specification are not limited thereto.

[0126] As shown in FIGS. 3 and 5, the connecting member 520 according to an embodiment of the present specification can connect or couple the vibration generator 510 to the curved surface portion 350 of the support member 300. For example, the connecting member 520 may be disposed between the curved surface portion 350 of the support member 300 and the first surface of the vibration generator 510. For example, the connecting member 520 may be interposed between the curved surface portion 350 of the support member 300 and the first surface of the vibration generator 510.

[0127] Therefore, the vibration generator 510 can be coupled or attached to the curved surface portion 350 of the support member 300 via the connecting member 520, and can receive pre-stress (or pre-tensile stress) due to the curved surface shape of the curved surface portion 350, or can include a state of being bent into the curved surface shape. Thereby, since the vibration generator 510 can vibrate in a state of receiving pre-stress (or pre-tensile stress) or being bent into a curved surface shape, it can include effects such as an increase in the second moment of inertia of the cross-section or the unification of the vibration direction.

[0128] FIG. 7 is a perspective view showing a vibration device according to a second embodiment of the present specification. FIG. 7 is obtained by further configuring pads on the vibration device shown in FIG. 6.

[0129] Referring to FIG. 7, the vibration device 500 or the first and second vibration devices 500-1, 500-2 according to the second embodiment of the present specification may include a vibration generator 510, a connecting member 520, and a pad 530.

[0130] Since each of the vibration generator 510 and the connecting member 520 is the same as that described with reference to FIG. 6, the same reference numerals are given thereto, and duplicate descriptions thereof may be omitted.

[0131] The pad 530 may be coupled or attached to the second surface of the vibration generator 510. For example, the pad 530 may be coupled or attached to the central portion of the second surface of the vibration generator 510. The pad 530 may have the same size as the vibration generator 510 or a smaller size. For example, the pad 530 may have a polygonal column shape or a circular column shape, and the embodiments of the present specification are not limited thereto.

[0132] The pad 530 according to an embodiment of the present specification may include a material having a rigidity lower than the bending rigidity of the vibration generator 510. The pad 530 according to another embodiment of the present specification may be made of an elastic material that can act as a weight (or mass) on the vibration generator 510, and the embodiments of the present specification are not limited thereto.

[0133] The pad 530 according to the embodiment of the present specification can reduce the minimum resonance frequency (or minimum natural frequency) of the vibration generator 510 by increasing the weight of the vibration generator 510. Therefore, the vibration generator 510 can vibrate at a relatively low frequency due to the decrease in the minimum resonance frequency (or minimum natural frequency) caused by the increase in weight by the pad 530. As a result, the acoustic characteristics and / or sound pressure characteristics in the low frequency band generated by the vibration of the vibration generator 510 can be improved. For example, the pad 530 may be a resonance pad, a mass member, a weight, or a weight member. For example, the low frequency band may be 300 Hz or 500 Hz or less, but the embodiments of the present specification are not limited thereto.

[0134] FIG. 8 is a perspective view showing a vibration device according to the third embodiment of the present specification. FIG. 8 further includes a plate and a second connecting member in the vibration device shown in FIG. 6. Therefore, in the description of FIG. 8, only the plate, the second connecting member, and the related configurations will be described.

[0135] When FIG. 8 is associated with FIG. 3 or FIG. 5, the vibration device 500 or the first and second vibration devices 500-1, 500-2 according to the third embodiment of the present specification can include a vibration generator 510, a first connecting member 520, a plate 540, and a second connecting member 550.

[0136] Since each of the vibration generator 510 and the first connecting member 520 is the same as or substantially the same as that described with reference to FIG. 6, the same reference numerals are given to them, and duplicate descriptions thereof can be omitted.

[0137] The plate 540 can be connected to or attached to the first connecting member 520. The plate 540 can have a size larger than that of the vibration generator 510 or a large area. For example, the central portion of the plate 540 can be located at or aligned with the central portion of the vibration generator 510. The plate 540 can be coupled to or attached to the curved surface portion 350 of the support member 300 shown in FIGS. 2 to 6 via the second connecting member 550.

[0138] According to an embodiment of the present specification, the vibrator 510 can be bent into a curved surface shape, and the vibrator 510 can have a modulus (or Young's modulus) greater than that of each of the first connecting member 520, the plate 540, and the second connecting member 550, or can have the same modulus as each of the first connecting member 520 and the second connecting member 550 and a modulus greater than that of the plate 540. For example, the plate 540 can have a modulus smaller than that of the vibrator 510. Thereby, the vibrator 510 can be bent into a shape corresponding to the curved surface portion 350 of the support member 300 via the first connecting member 520, the plate 540, and the second connecting member 550, so that the reliability of sound reproduction can be improved. And the vibrator 510 according to an embodiment of the present specification can improve the adhesiveness with the curved surface portion 350 of the support member 300 through the first connecting member 520, the plate 540, and the second connecting member 550, and can be transmitted to the curved surface portion 350 of the support member 300 without loss of vibration during vibration, so that the acoustic characteristics and / or sound pressure characteristics in the low frequency band can be improved.

[0139] For example, when the elastic modulus of the plate 540 is greater than the elastic modulus of the vibrator 510, the vibrator 510 is difficult to bend into a shape corresponding to the curved surface portion 350 of the support member 300, and the adhesiveness with the curved surface portion 350 of the support member 300 through the first connecting member 520, the plate 540, and the second connecting member 550 may decrease. Thereby, the reliability of sound reproduction decreases, and the acoustic characteristics and / or sound pressure characteristics in the low frequency band may decrease.

[0140] According to an embodiment of the present specification, the plate 540 can include a material having material properties suitable for bending the vibration generator 510 into a curved surface shape and transmitting the vibration of the vibration generator 510 to the curved surface portion 350 of the support member 300. For example, the plate 540 can include a material having a rigidity lower than the bending rigidity of the vibration generator 510. The plate 540 can include one or more of metal, glass, plastic, fiber, leather, rubber, wood, cloth, and paper. For example, the plate 540 can be a support plate, a rigid plate, a transmission plate, an intermediate plate, or a vibration transmission plate, but the embodiments of the present specification are not limited thereto.

[0141] As shown in FIG. 8, the second connecting member 550 can connect or couple the plate 540 to the curved surface portion 350 of the support member 300, as shown in FIGS. 3 and 5. For example, the second connecting member 550 can be disposed between the curved surface portion 350 of the support member 300 and the plate 540. For example, the second connecting member 550 can be interposed between the curved surface portion 350 of the support member 300 and the plate 540.

[0142] The second connecting member 550 can include an adhesive layer (or an adhesive layer) having excellent adhesion or adhesive force. The second connecting member 550 can include an adhesive material having a modulus different from that of the first connecting member 520. For example, the first connecting member 520 can have a modulus (or adhesive force or hardness) larger than that of the second connecting member 550 so that the plate 540 and the vibration generator 510 can be smoothly bent into a curved surface shape.

[0143] Therefore, the vibration generator 510 is coupled or attached to the curved surface portion 350 of the support member 300 via the first connecting member 520, the plate 540, and the second connecting member 550, and can be subjected to prestress (or pre-tensile stress) due to the curved surface shape of the curved surface portion 350, or can include a state of being bent into the curved surface shape. As a result, the vibration generator 510 can vibrate in a state of being subjected to prestress (or pre-tensile stress) or being bent into the curved surface shape, and thus can include effects such as an increase in the second moment of inertia or the unification of the vibration direction.

[0144] FIG. 9 is a perspective view showing a vibration device according to a fourth embodiment of the present specification. FIG. 9 is obtained by further configuring a pad in the vibration device shown in FIG. 8.

[0145] Referring to FIG. 9, the vibration device 500 or the first and second vibration devices 500-1 and 500-2 according to the fourth embodiment of the present specification can include a vibration generator 510, a first connecting member 520, a plate 540, a second connecting member 550, and a pad 530.

[0146] Each of the vibration generator 510, the first connecting member 520, the plate 540, and the second connecting member 550 is the same as or substantially the same as that described with reference to FIG. 8, so the same reference numerals are given to them, and overlapping descriptions thereof can be omitted.

[0147] The pad 530 can be coupled or attached to the second surface of the vibration generator 510. For example, the pad 530 can be coupled or attached to the central portion of the second surface of the vibration generator 510. The pad 530 can increase the weight of the vibration generator 510 and decrease the lowest resonance frequency (or lowest natural frequency) of the vibration generator 510. The pad 530 is substantially the same as the pad 530 described with reference to FIG. 7, so the same reference numerals are given to it, and overlapping descriptions thereof can be omitted.

[0148] FIG. 10 is another cross-sectional view taken along line II-II' shown in FIG. 2. FIG. 10 further configures an enclosure for the apparatus 1 shown in FIGS. 2 to 9. Therefore, in the description of FIG. 10, the same reference numerals are given to the remaining configurations except for the enclosure and the related configurations, and duplicate descriptions thereof may be omitted.

[0149] Referring to FIG. 10, the apparatus 1 according to the first embodiment of the present specification may further include an enclosure 950.

[0150] The enclosure 950 may be connected or coupled to the back surface of the support member 300 so as to cover the vibration device 500. For example, the enclosure 950 may be connected or coupled to the back surface of the back portion 310 of the support member 300 via a coupling member 951. The enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the support member 300. For example, the enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the back portion 310 of the support member 300. For example, the enclosure 950 can be a sealing member, a sealing cap, a sealing box, or a sound box, but the embodiments of the present specification are not limited thereto. The sealed space can be an air gap, a vibration space, an acoustic space, or a resonance box, but the embodiments of the present specification are not limited thereto.

[0151] The enclosure 950 can include one or more materials of a metal material or a non-metal material (or a composite non-metal material). For example, the enclosure 950 can include one or more materials of metal, plastic, and wood, but the embodiments of the present specification are not limited thereto.

[0152] The enclosure 950 according to an embodiment of the present specification can keep constant the impedance component due to air acting on the curved surface portion 350 of the support member 300 when the curved surface portion 350 of the support member 300 or the vibration device 500 vibrates. For example, the air around the support member 300 comes to resist the vibration of the curved surface portion 350 of the support member 300 and acts as an impedance component having different resistance and reactance components depending on the frequency. Thereby, the enclosure 950 forms a sealed space surrounding the vibration device 500 on the back surface of the support member 300, thereby keeping constant the impedance component (or air impedance or elastic impedance) acting on the curved surface portion 350 of the support member 300 by air, thereby improving the acoustic characteristics and / or sound pressure characteristics in the low frequency band and improving the sound quality of the sound in the high frequency band.

[0153] The device 1 according to the first embodiment of the present specification can have improved acoustic characteristics and / or sound pressure characteristics in the low frequency band and improved sound quality of the sound in the high frequency band by the enclosure 950.

[0154] FIGS. 11A and 11B are rear perspective views showing a support member according to another embodiment of the present specification. FIGS. 11A and 11B are modifications of the curved surface portions of the support member shown in FIGS. 2 to 5.

[0155] Referring to FIGS. 11A and 11B, the back surface portion 310 of the support member 300 according to another embodiment of the present specification can include a plurality of regions 300A1, 300A2, 300A3. The back surface portion 310 of the support member 300 can include a first region 300A1, a second region 300A2, and a third region 300A3. For example, the back surface portion 310 of the support member 300 can include the first to third regions 300A1, 300A2, 300A3 based on a first length (or horizontal length) parallel to the first direction (X).

[0156] The first region 300A1 can be the first back region, the left region, or the back left region. The second region 300A2 can be the second back region, the right region, or the back right region. The third region 300A3 can be the region between the first region 300A1 and the second region 300A2. For example, the third region 300A3 can be the intermediate region including the intermediate line of the first length of the support member 300.

[0157] The support member 300 can include curved surface portions 350 disposed in each of the first to third regions 300A1, 300A2, and 300A3.

[0158] Referring to FIG. 11A, the curved surface portion 350 according to an embodiment of the present specification can include first to third curved surface portions 350a, 350b, and 350c disposed in each of the first to third regions 300A1, 300A2, and 300A3.

[0159] Each of the first to third curved surface portions 350a, 350b, and 350c can protrude from the back surface portion 310 so as to have the same size and the same shape as each other. Each of the first to third curved surface portions 350a, 350b, and 350c can protrude from the back surface portion 310 so as to have the same curvature as each other. Since the protruding structures and curvatures of each of the first to third curved surface portions 350a, 350b, and 350c are the same as or substantially the same as those described with reference to FIG. 3, overlapping descriptions thereof can be omitted.

[0160] Each of the first to third curved surface portions 350a, 350b, and 350c can have a square shape or a rectangular shape as described with reference to FIGS. 4A to 4C, and overlapping descriptions thereof can be omitted.

[0161] The vibration device 500 can include a first vibration device 500-1 disposed on the first curved surface portion 350a, a second vibration device 500-2 disposed on the second curved surface portion 350b, and a third vibration device 500-3 disposed on the third curved surface portion 350c. Each of the first to third vibration devices 500-1, 500-2, 500-3 can receive a pre-stress (or pre-tensile stress) due to the respective curvature of the first to third curved surface portions 350a, 350b, 350c, or can vibrate in a state bent into a curved surface shape, so it can include the effects due to an increase in the second moment of area or the unification of the vibration direction.

[0162] Referring to FIG. 11B, according to an embodiment of the present specification, one or more of the first to third curved surface portions 350a, 350b, 350c can protrude from the back surface portion 310 so as to have different sizes and different shapes. One or more of the first to third curved surface portions 350a, 350b, 350c can protrude from the back surface portion 310 so as to have different curvatures. For example, the third curved surface portion 350c can have a smaller size than each of the first and second curved surface portions 350a, 350b. Since the curved surface portion 350 shown in FIG. 11B is substantially the same except that the third curved surface portion 350c has a smaller size than each of the first and second curved surface portions 350a, 350b, duplicate descriptions thereof can be omitted.

[0163] The third vibration device 500-3, by being disposed on the third curved surface portion 350c, has a size corresponding to the size of the third curved surface portion 350c, and thus can have a smaller size than each of the first vibration device 500-1 and the second vibration device 500-2.

[0164] Referring to FIGS. 11A and 11B, each of the first to third vibration devices 500-1, 500-2, and 500-3 according to an embodiment of the present specification may be configured to generate or output sounds in the same sound range band. Accordingly, the device 1 according to the first embodiment of the present specification can output stereophonic sound by the sounds output from the left side, the right side, and the center side (or the middle side) of the vibration member 100 due to the vibration of the vibration member 100 caused by the vibration of each of the first to third vibration devices 500-1, 500-2, and 500-3, and can have three-channel sound output characteristics.

[0165] According to another embodiment of the present specification, one or more of the first to third vibration devices 500-1, 500-2, and 500-3 may be configured to generate or output sounds in different sound range bands. For example, the third vibration device 500-3 may be configured to generate or output sounds in the low sound range band, and the first and second vibration devices 500-1 and 500-2 may each be configured to generate or output sounds in a wider sound range band than the third vibration device 500-3, but the embodiments of the present specification are not limited thereto. Accordingly, the device 1 according to the first embodiment of the present specification can realize sounds, such as stereophonic sound, through the left and right sounds output by the vibration of the vibration member 100 due to the driving of each of the first vibration device 500-1 and the second vibration device 500-2, and the sound pressure characteristics and / or the sound pressure characteristics in the low sound range band can be improved by the sounds in the low sound range band output by the vibration of the vibration member 100 due to the driving of the third vibration device 500-3.

[0166] FIG. 12 is another cross-sectional view taken along line II-II' shown in FIG. 2. FIG. 13 is a rear perspective view showing the support member shown in FIG. 12. FIG. 14 is a rear view showing the support member shown in FIG. 13. FIGS. 12 to 14 are diagrams for explaining the device according to the second embodiment of the present invention. FIGS. 12 to 14 are the devices described with reference to FIGS. 1 to 5, in which holes are further formed in the curved surface portion of the support member.

[0167] Referring to FIGS. 12 to 14, the apparatus 2 according to the second embodiment of the present invention can include a vibration member 100, a support member 300, and a vibration device 500.

[0168] Since the vibration member 100 is the same as or substantially the same as that described with reference to FIGS. 1 to 5, the same reference numerals are given thereto, and duplicate descriptions thereof may be omitted.

[0169] The support member 300 may be configured to support the vibration member 100. The support member 300 may include a back surface portion 310, side surface portions 330, a curved surface portion 350, and holes 360. Since each of the back surface portion 310 and the side surface portions 330 and the curved surface portion 350 is the same as or substantially the same as each of the back surface portion 310 and the side surface portions 330 described with reference to FIGS. 3 to 5, duplicate descriptions thereof may be omitted. Further, except that the curved surface portion 350 includes the holes 360, since the curved surface portion 350 is the same as or substantially the same as the curved surface portion 350 described with reference to FIGS. 3 to 5, duplicate descriptions thereof may be omitted for the sake of brevity.

[0170] The support member 300 may further include one or more holes 360 formed in the curved surface portion 350. The support member 300 may include one or more holes 360 formed in each of a first curved surface portion 350a and a second curved surface portion 350b of the curved surface portion 350.

[0171] One or more holes 360 may be formed in the curved surface portion 350. For example, one or more holes 360 may be formed to penetrate the curved surface portion 350 along a third direction (Z). Thereby, one or more holes 360 may be an opening, a communication portion, an opening hole, a communication hole, a through portion, a through opening, a through hole, a support hole, a slit, a slot, or an acoustic passage portion, and the embodiments of the present specification are not limited thereto. For example, the third direction (Z) may be the thickness direction or the height direction of the support member 300, or the Z-axis direction in the XYZ axis directions.

[0172] One or more holes 360 according to other embodiments of this specification may be formed in the remaining portion (or middle portion) excluding the edge portion of the curved surface portion 350. For example, one or more holes 360 may be formed to penetrate the remaining portion (or middle portion) excluding the edge portion of the curved surface portion 350 along the third direction (Z). For example, the support member 300 may include one or more holes 360 formed in the remaining portion (or middle portion) excluding the edge portion of the curved surface portion 350.

[0173] One or more holes 360 may be formed in the curved surface portion 350 and may have the same shape as the vibration device 500. For example, when the vibration device 500 has a square shape, one or more holes 360 may have a square shape, and when the vibration device 500 has a rectangular shape, one or more holes 360 may have a rectangular shape, but the embodiments of this specification are not limited thereto.

[0174] One or more holes 360 may be formed in each of the first curved surface portion 350a and the second curved surface portion 350b of the curved surface portion 350. One or more holes 360 may have a size smaller than that of the vibration devices 500-1 and 500-2. For example, when the overall size (or overall width) of one or more holes 360 is larger than the overall size of the vibration devices 500-1 and 500-2, the vibration devices 500-1 and 500-2 cannot be arranged on the curved surface portion 350 without a separate instrument by being inserted (or penetrated or accommodated) into one or more holes 360. Therefore, when the overall size (or overall width) of one or more holes 360 is smaller than the overall size of the vibration devices 500-1 and 500-2, the vibration devices 500-1 and 500-2 can be arranged on the curved surface portion 350 to overlap one or more holes 360 or cover the holes 360 without a separate instrument.

[0175] One or more holes 360 formed in each of the first curved surface portion 350a and the second curved surface portion 350b can be disposed between the vibration member 100 and the vibration devices 500-1 and 500-2. Thereby, the one or more holes 360 can provide a gap space (GS) between the vibration member 100 and the vibration devices 500-1 and 500-2. Thereby, compared with the device 1 shown in FIG. 5, the gap space (GS) between the vibration member 100 and the curved surface portions 250a and 350b can be expanded by only the space corresponding to the thickness of the curved surface portions 250a and 350b. For example, the gap space (GS) can be an air gap, a sound pressure generation space, an acoustic space, a sound pressure space, a resonance portion, a resonance box, a sound wave propagation path, an acoustic energy incident portion, or an acoustic path, and the embodiments of the present specification are not limited thereto.

[0176] One or more holes 360 formed in each of the first curved surface portion 350a and the second curved surface portion 350b can be disposed between the backlight 113 of the vibration member 100 and the vibration devices 500-1 and 500-2. Thereby, the one or more holes 360 can provide a gap space (GS) between the backlight 113 and the vibration devices 500-1 and 500-2. For example, the one or more holes 360 can provide a gap space (GS) between the reflection sheet 113b of the backlight 113 and the vibration devices 500-1 and 500-2.

[0177] Each of the first and second vibration devices 500-1 and 500-2 of the vibration device 500 is connected to or attached to the curved surface portions 350a and 350b so as to cover the one or more holes 360, and thus can receive pre-stress (or pre-tensile stress) due to the curvature of the curved surface portion 350 or can vibrate in a state bent into a curved surface shape, and thus can include effects such as an increase in the second moment of area or the unification of the vibration direction.

[0178] Each of the first and second vibration devices 500-1 and 500-2 of the vibration device 500 can face the back surface of the vibration member 100 or directly face the back surface of the vibration member 100 through one or more holes 360. For example, each of the first and second vibration devices 500-1 and 500-2 can face the backlight 113 or directly face the backlight 113 through one or more holes 360. For example, each of the first and second vibration devices 500-1 and 500-2 can face the reflective sheet 113b of the backlight 113 or directly face the reflective sheet 113b through one or more holes 360. Thus, the sound (or sound wave) generated by the driving of each of the first and second vibration devices 500-1 and 500-2 can be directly transmitted to the vibration member 100 through one or more holes 360 or the gap space (GS). For example, the sound (or sound wave) generated by the driving of each of the first and second vibration devices 500-1 and 500-2 can be directly transmitted to the backlight 113 of the vibration member 100 through one or more holes 360 or the gap space (GS). Thereby, the vibrations of each of the first and second vibration devices 500-1 and 500-2 can be efficiently transmitted to the vibration member 100, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be improved. For example, each of the first and second vibration devices 500-1 and 500-2 vibrates according to a drive signal and outputs sound (or sound wave) to the gap space (GS), and the sound generated by the vibration of the backlight 113 due to the sound in the gap space (GS) is output to the sound transmission space (STS), and sound and / or haptic feedback can be generated by the vibration of the display panel 111 due to the sound in the sound transmission space (STS).

[0179] The device 2 according to the second embodiment of the present specification can be vibrated while being subjected to prestress (or pre-tensile stress) or being bent into a curved surface shape. Therefore, by increasing the second moment of area of the vibrating device 500 or unifying the vibration direction, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibrating member 100 can be improved. And the device 2 according to the second embodiment of the present specification includes a hole 360 formed in the curved surface portion 350 of the support member 300, so that the sound (or sound wave) generated by the vibration of the vibrating device 500 can be directly transmitted to the vibrating member 100. Thereby, the vibration transmission efficiency can be increased, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibrating member 100 can be further improved.

[0180] The device 2 according to the second embodiment of the present specification can further include an enclosure 950.

[0181] The enclosure 950 can be disposed on the back surface of the vibrating device 500. For example, the enclosure 950 can be connected or coupled to the back surface of the support member 300 so as to cover the vibrating device 500. For example, the enclosure 950 can be connected or coupled to the back surface of the back surface portion 310 of the support member 300 via a coupling member 951. The enclosure 950 can form (or create) a sealed space that covers or surrounds the vibrating device 500 on the back surface of the back surface portion 310 of the support member 300. For example, the enclosure 950 can be a sealed member, a sealed cap, a sealed box, or a sound box, but the embodiments of the present specification are not limited thereto. The sealed space can be an air gap, a vibration space, an acoustic space, or a resonance box, but the embodiments of the present specification are not limited thereto.

[0182] The enclosure 950 can include one or more materials of a metallic material or a non-metallic material (or a composite non-metallic material). For example, the enclosure 950 can include one or more materials of metal, plastic, and wood, but the embodiments of the present specification are not limited thereto.

[0183] The enclosure 950 according to an embodiment of the present specification can keep the impedance component caused by air acting on the vibration device 500 constant when the vibration device 500 vibrates. For example, the air around the vibration device 500 becomes resistant to the vibration of the vibration device 500 and acts as an impedance component having different resistance and reactance components depending on the frequency. Accordingly, the enclosure 950 can keep the impedance component (or air impedance or elastic impedance) caused by air acting on the vibration device 500 constant by forming a sealed space surrounding the vibration device 500 on the back surface of the support member 300. Thereby, the enclosure 950 can improve the acoustic characteristics and / or sound pressure characteristics in the low frequency band and improve the sound quality of the sound in the high frequency band.

[0184] The device 2 according to the second embodiment of the present specification can have the acoustic characteristics and / or sound pressure characteristics in the low frequency band improved by the enclosure 950, and the sound quality of the sound in the high frequency band can be improved.

[0185] FIG. 15 is a perspective view showing a vibration device according to a fifth embodiment of the present specification. FIG. 15 is a diagram for explaining the vibration device shown in FIG. 12.

[0186] Referring to FIGS. 12, 13, and 15, the vibration device 500 or the first and second vibration devices 500-1 and 500-2 according to the fifth embodiment of the present specification can include a vibration generator 510, a first connecting member 520, a plate 540, and a second connecting member 560.

[0187] Since each of the vibration generator 510, the first connecting member 520, and the plate 540 is the same as or substantially the same as that described with reference to FIGS. 8 or 9, the same reference numerals are given thereto, and duplicate explanations thereof can be omitted.

[0188] The plate 540 according to an embodiment of the present specification may be the same as or smaller than the curved surface portion 350 of the support member 300. The plate 540 may have a size larger than that of one or more holes 360 formed in the curved surface portion 350. Thereby, the vibration generator 510 can be supported via the first connecting member 520, or the plate 540 coupled to the plate 540 can cover one or more holes 360 of the support member 300.

[0189] The second connecting member 560 may be disposed between the curved surface portion 350 of the support member 300 and the plate 540. For example, the second connecting member 560 may be disposed between the curved surface portion 350 of the support member 300 and the edge portion of the front surface of the plate 540.

[0190] The second connecting member 560 may include the same adhesive layer (or adhesive layer) or adhesive material as the second connecting member 550 described with reference to FIGS. 8 or 9.

[0191] The second connecting member 560 according to an embodiment of the present specification may include an opening 561 corresponding to or overlapping one or more holes 360. Thereby, the second connecting member 560 may be disposed or interposed between the curved surface portion 350 of the support member 300 and the edge portion of the front surface of the plate 540. For example, the second connecting member 560 may be configured in a rectangular strip shape having an opening 561.

[0192] The second connecting member 560 according to another embodiment of the present specification may have a structure divided into four or more so as to correspond to or overlap the edge portion of the front surface of the plate 540.

[0193] The vibrator 510 of the vibration device 500 according to the fifth embodiment of this specification or the first and second vibration devices 500-1 and 500-2 can receive pre-stress (or pre-tensile stress) by the curved surface portion 350, or vibrate in a state bent into a curved surface shape, and output sound (or sound waves) through one or more holes 360 or a gap space (GS). Thereby, since the vibration of the vibrator 510 can be efficiently transmitted to the vibration member 100, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be improved.

[0194] FIGS. 16A and 16B are rear perspective views showing a support member according to another embodiment of this specification. FIGS. 16A and 16B are modifications of the curved surface portion of the support member shown in FIG. 13.

[0195] Referring to FIGS. 12 and 16A, the support member 300 according to another embodiment of this specification can include a plurality of holes 351. The support member 300 according to another embodiment of this specification can include a plurality of holes 351 formed in the curved surface portion 350.

[0196] The plurality of holes 351 can be formed in the curved surface portion 350 so as to have a preset interval along the first direction (X), but the embodiments of this specification are not limited thereto. For example, the plurality of holes 351 can be formed in the curved surface portion 350 so as to have a preset interval along one or more directions among the first direction (X) and the second direction (Y), and the direction between the first direction (X) and the second direction (Y).

[0197] The plurality of holes 351 can be formed in each of the first and second curved surface portions 350a and 350b of the curved surface portion 350 so as to have a preset interval along the first direction (X), but the embodiments of this specification are not limited thereto. For example, the plurality of holes 351 can be formed in each of the first and second curved surface portions 350a and 350b so as to have a preset interval along one or more directions among the first direction (X) and the second direction (Y), and the direction between the first direction (X) and the second direction (Y).

[0198] The plurality of holes 351 can form a path through which the sound (or sound wave) generated by the vibration of the vibrator 510 is transmitted (or propagated) to the gap space (GS) or the vibrating member 100. Thereby, by efficiently transmitting the vibration of the vibrator 510 to the vibrating member 100, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibrating member 100 can be improved.

[0199] Referring to FIGS. 12 and 16B, the support member 300 according to other embodiments of the present specification can include a plurality of slits (or slots) 352 or one or more slits (or slots) 352. The support member 300 according to other embodiments of the present specification can include a plurality of slits (or slots) 352 formed in the curved surface portion 350.

[0200] The plurality of slits 352 can be formed in the curved surface portion 350 so as to have a preset interval along the first direction (X), but the embodiments of the present specification are not limited thereto. For example, the plurality of slits 352 can be formed in the curved surface portion 350 so as to have a preset interval along one or more of the first direction (X) and the second direction (Y), and the direction between the first direction (X) and the second direction (Y).

[0201] The plurality of slits 352 can be formed in each of the first and second curved surface portions 350a and 350b so as to have a preset interval along the first direction (X), but the embodiments of the present specification are not limited thereto. For example, the plurality of slits 352 can be formed in each of the first and second curved surface portions 350a and 350b so as to have a preset interval along one or more of the first direction (X) and the second direction (Y), and the direction between the first direction (X) and the second direction (Y).

[0202] The plurality of slits 352 can form a path through which the sound (or sound wave) generated by the vibration of the vibration generator 510 is transmitted (or propagated) to the gap space (GS) or the vibrating member 100. As a result, the vibration of the vibration generator 510 is efficiently transmitted to the vibrating member 100, so that the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibrating member 100 can be improved.

[0203] In the support member 300 according to another embodiment of the present specification, one or more of the first and second curved surfaces 350a and 350b of the curved surface portion 350 may be surrounded by the enclosure 950 shown in FIG. 12.

[0204] 17A to 17D are rear perspective views showing a support member according to another embodiment of the present specification. FIGS. 17A to 17D show a modification of the curved surface portion of the support member shown in FIG. 13.

[0205] Referring to FIGS. 17A to 17C, the curved surface portion 350 of the support member 300 according to another embodiment of the present specification may include first to third curved surface portions 350a, 350b, and 350c disposed in the first to third regions 300A1, 300A2, and 300A3 of the back surface portion 310, respectively.

[0206] Since the first to third curved surface portions 350a, 350b, and 350c are substantially the same as or substantially the same as the first to third curved surface portions 350a, 350b, and 350c described with reference to FIG. 11A, the same reference numerals are given to them, and redundant descriptions thereof may be omitted.

[0207] The support member 300 according to another embodiment of the present specification may include one or more holes 360 formed in one or more of the first to third curved surface portions 350a, 350b, and 350c.

[0208] According to one embodiment of the present specification, one or more holes 360 may be formed in each of the first and second curved surface portions 350a and 350b among the first to third curved surface portions 350a, 350b, and 350c, as shown in FIG. 17A. Since one or more holes 360 are substantially the same as the one or more holes 360 described with reference to FIGS. 12 and 13, except that they are formed in each of the first and second curved surface portions 350a and 350b, the same reference numerals are given to them, and duplicate descriptions thereof may be omitted. Since the third curved surface portion 350c is substantially the same as the third curved surface portion 350c described with reference to FIG. 11A, the same reference numerals are given to it, and duplicate descriptions thereof may be omitted.

[0209] According to another embodiment of the present specification, one or more holes 360 may be formed in the third curved surface portion 350c among the first to third curved surface portions 350a, 350b, and 350c, as shown in FIG. 17B. Since one or more holes 360 are substantially the same as the one or more holes 360 described with reference to FIGS. 12 and 13, except that they are formed in the third curved surface portion 350c, the same reference numerals are given to them, and duplicate descriptions thereof can be omitted. Since the first and second curved surface portions 350a and 350b are substantially the same as the first and second curved surface portions 350a and 350b described with reference to FIG. 11A, the same reference numerals are given to them, and duplicate descriptions thereof may be omitted.

[0210] According to another embodiment of the present specification, one or more holes 360 may be formed in each of the first to third curved surface portions 350a, 350b, and 350c, as shown in FIG. 17C. Since one or more holes 360 are substantially the same as the one or more holes 360 described with reference to FIGS. 12 and 13, except that they are formed in each of the first to third curved surface portions 350a, 350b, and 350c, the same reference numerals are given to them, and duplicate descriptions thereof may be omitted.

[0211] Referring to FIG. 17D, the curved surface portion 350 of the support member 300 according to another embodiment of the present invention can include first to third curved surface portions 350a, 350b, and 350c disposed in the first to third regions 300A1, 300A2, and 300A3 of the back surface portion 310, respectively.

[0212] The third curved surface portion 350c disposed in the third region 300A3 among the first to third curved surface portions 350a, 350b, and 350c can have a size smaller than that of each of the first and second curved surface portions 350a and 350b. Since the first to third curved surface portions 350a, 350b, and 350c are substantially the same as or substantially the same as the first to third curved surface portions 350a, 350b, and 350c described with reference to FIG. 11B, the same reference numerals are given to them, and overlapping descriptions thereof can be omitted.

[0213] The support member 300 according to another embodiment of the present specification can include one or more holes 360 formed in each of the first to third curved surface portions 350a, 350b, and 350c. However, the embodiments of the present specification are not limited thereto. As shown in FIGS. 17A and 17B, the one or more holes 360 shown in FIG. 17D can be formed in the remainder excluding any one of the first to third curved surface portions 350a, 350b, and 350c.

[0214] One or more holes 360 shown in FIGS. 17A to 17D can form a path through which the sound (or sound wave) generated by the vibration of the vibration generator 510 is transmitted (or propagated) to the gap space (GS) or the vibrating member 100. As a result, the vibration of the vibration generator 510 is efficiently transmitted to the vibrating member 100, so that the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibrating member 100 can be improved. And, since one or more holes 360 can form a path through which the sound (or sound wave) generated by the vibration of the vibration generator 510 is transmitted (or propagated) to the gap space (GS) or the vibrating member 100, monaural sound or stereo sound can be realized. And, as shown in FIG. 17B, when it is composed of one hole 360, it is possible to provide a device that can reproduce monaural sound with a device having reduced cost.

[0215] In the support member 300 according to another embodiment of the present specification, one or more of the first to third curved surface portions 350a, 350b, and 350c of the curved surface portion 350 can be surrounded by the enclosure 950 shown in FIG. 12.

[0216] FIG. 18 is another cross-sectional view taken along line II-II' shown in FIG. 2. FIG. 19 is a rear perspective view showing the support member shown in FIG. 18. FIGS. 18 and 19 are diagrams for explaining the device according to the third embodiment of the present invention. FIGS. 18 and 19 are obtained by changing the curved surface portion of the support member in the device described with reference to FIGS. 1 to 5.

[0217] Referring to FIGS. 18 and 19, the device 3 according to the third embodiment of the present invention can include a vibrating member 100, a support member 300, and a vibration device 500.

[0218] Since the vibrating member 100 is the same as or substantially the same as that described with reference to FIGS. 1 to 5, the same reference numerals are given to it, and duplicate explanations thereof can be omitted.

[0219] The support member 300 can be configured to support the vibration member 100. The support member 300 can include a back surface portion 310, side surface portions 330, a protruding portion 340, and a curved surface portion 350. Since each of the back surface portion 310 and the side surface portions 330 is the same as each of the back surface portion 310 and the side surface portions 330 described with reference to FIGS. 3 to 5, duplicate explanations thereof can be omitted.

[0220] The protruding portion 340 can be realized on the back surface portion 310. The protruding portion 340 can protrude from the back surface portion 310 in the direction of the back of the support member 300. For example, the protruding portion 340 can protrude from the back surface portion 310 in the direction of the back of the support member 300 so as to have a square shape. For example, the protruding portion 340 can include a trapezoidal shape, a pyramid shape, or a pentahedron shape. For example, the protruding portion 340 can be a storage portion, a housing portion, a pocket portion, or a home portion, but the embodiments of the present specification are not limited thereto.

[0221] The protruding portion 340 can include a protruding surface (or protruding bottom surface) 341 that is parallel to the back surface portion 310 and faces the vibration member 100, and a plurality of side surfaces (or protruding walls) 342 connected between the back surface portion 310 and the protruding surface 341. The plurality of side surfaces 342 can be perpendicular or inclined between the back surface portion 310 and the protruding surface 341. Thereby, the device 3 according to the third embodiment of the present specification can further include a gap space (GS) provided between the protruding portion 340 of the support member 300 and the vibration member 100. The gap space (GS) can be provided between the protruding portion 340 of the support member 300 and the back of the vibration member 100. For example, the gap space (GS) can be provided between the protruding surface 341 of the protruding portion 340 and the backlight 113 of the vibration member 100. For example, the gap space (GS) can be provided between the protruding surface 341 of the protruding portion 340 and the reflection sheet 113b of the backlight 113.

[0222] The curved surface portion 350 can be realized on the protruding portion 340. The curved surface portion 350 can be implemented on the protruding surface 341 of the protruding portion 340. The curved surface portion 350 can vibrate together with the vibration of the vibration device 500 to vibrate the vibration member 100. For example, the curved surface portion 350 can indirectly vibrate the vibration member 100 by vibrating due to the vibration of the vibration device 500.

[0223] According to an embodiment of the present specification, the curved surface portion 350 can be realized on the protruding portion 340 so as to include a preset curvature. For example, the curved surface portion 350 can include a curved surface structure protruding from the protruding surface 341 of the protruding portion 340 toward the vibration member 100. For example, the curved surface portion 350 can protrude from the protruding surface 341 of the protruding portion 340 so as to have a curved surface shape having one curvature (or a single curvature). For example, the curved surface portion 350 can have a curved surface structure having one curvature (or a single curvature) without an inflection point. For example, the curved surface portion 350 can protrude convexly from the protruding surface 341 of the protruding portion 340 toward the vibration member 100. For example, the curved surface portion 350 can have a single convex curved surface shape having a constant curvature. For example, the curved surface portion 350 can be a back protruding portion, a curved surface protruding portion, a bottom protruding portion, a back curved surface portion, a curved surface structure, a curvature structure, a forming portion, or a stress applying portion, but the embodiments of the present specification are not limited thereto. For example, the curved surface portion 350 can be a curved surface portion of a second shape, a convex portion, a convex protruding portion, a convex curved surface portion, a convex arch portion, a protruding portion, or a raised portion with reference to the protruding surface 341 of the protruding portion 340 facing the vibration member 100, but the embodiments of the present specification are not limited thereto.

[0224] According to an embodiment of the present specification, the central portion of the curved surface portion 350 can be separated from the back surface of the vibrating member 100. For example, the height (or distance) between the back surface of the vibrating member 100 and the curved surface portion 350 can decrease from the edge portion to the central portion of the curved surface portion 350. According to an embodiment of the present specification, the curved surface portion 350 can be realized to have a first height from the protruding surface 341 of the protruding portion 340. The first height of the curved surface portion 350 can be 2 mm to 200 mm so as to apply a pre-stress to the vibration device 500 as described with reference to FIG. 3, but the embodiments of the present specification are not limited thereto and can be changed according to the size of the vibration device 500. The first height of the curved surface portion 350 may be smaller than the second height of the vibrating member 100.

[0225] The protruding portion 340 according to an embodiment of the present specification may include a first protruding portion 340a disposed in the first region 300A1 of the support member 300 and a second protruding portion 340b disposed in the second region 300A2 of the support member 300. Each of the first protruding portion 340a and the second protruding portion 340 may include the above-described protruding surface 341 and a plurality of side surfaces 342.

[0226] The curved surface portion 350 according to an embodiment of the present specification may include a first curved surface portion 350a and a second curved surface portion 350b.

[0227] The first curved surface portion 350a can be realized on the first protruding portion 340a. The first curved surface portion 350a can be realized on the protruding surface 341 of the first protruding portion 340a. For example, the first curved surface portion 350a can support the first vibration device 500-1. The first curved surface portion 350a can be realized to vibrate together with the vibration of the first vibration device 500-1.

[0228] The second curved surface portion 350b can be realized on the second protruding portion 340b. The second curved surface portion 350b can be realized on the protruding surface 341 of the second protruding portion 340b. For example, the second curved surface portion 350b can support the second vibration device 500-2. The second curved surface portion 350b can be realized to vibrate together with the vibration of the second vibration device 500-2.

[0229] The vibration device 500 can be coupled to or attached to the curved surface portion 350. The vibration device 500 is coupled to or attached to the curved surface portion 350 between the vibration member 100 and the curved surface portion 350, and can face or directly face the back surface of the vibration member 100. For example, the vibration device 500 can be coupled to or attached to the inner surface (or internal curved surface) of the curved surface portion 350 that faces or directly faces the back surface of the vibration member 100. For example, the vibration device 500 can be coupled to or attached to the curved surface portion 350 within the gap space (GS) provided by the protruding portion 340. For example, the vibration device 500 can be coupled to or attached to the inner surface (or internal curved surface) of the curved surface portion 350 within the gap space (GS). For example, the vibration device 500 can have a size smaller than that of the curved surface portion 350. The vibration device 500 can be coupled to or attached to the curved surface portion 350 so as to have an isometric shape that follows the curvature of the curved surface portion 350 as it is, but the embodiments of this specification are not limited thereto. For example, the vibration device 500 can have a non-isometric shape that does not follow the curvature of the curved surface portion 350 as it is, or can be coupled to or attached to the curved surface portion 350 so as to have a curvature different from that of the curved surface portion 350.

[0230] According to other embodiments of this specification, the vibration device 500 is the same as or substantially the same as the vibration device described with reference to FIGS. 4A to 9, so duplicate descriptions thereof can be omitted.

[0231] According to other embodiments of this specification, the vibration device 500 (or the vibration generator) can have or receive prestress by the curved surface portion 350 by being coupled to or attached to the curved surface portion 350. For example, the vibration device 500 can be maintained in a state of having or receiving prestress by the curved surface portion 350 by being coupled to or attached to the curved surface portion 350. For example, the vibration device 500 can receive or include tensile stress due to the curvature of the curved surface portion 350. For example, the curved surface portion 350 can be realized to apply only tensile stress to the vibration device 500 in order to improve the vibration characteristics of the vibration device 500.

[0232] According to another embodiment of the present specification, as described with reference to FIG. 3, the vibration device 500 can receive prestress (or pre-tensile stress) by the curved surface portion 350 realized on the protruding portion 340 or vibrate in a state bent into a curved surface shape, so it can include the effects of an increase in the second moment of area or the unification of the vibration direction, and thus the overlapping description thereof can be omitted.

[0233] The vibration device 500 can include a first vibration device 500-1 and a second vibration device 500-2. Since each of the first vibration device 500-1 and the second vibration device 500-2 is the same as or substantially the same as the vibration device described with reference to FIGS. 4A to 9, the overlapping description thereof can be omitted.

[0234] The first vibration device 500-1 (or the vibration generator) of the vibration device 500 can be coupled or attached to the first curved surface portion 350a. The first vibration device 500-1 can be coupled or attached to the first curved surface portion 350a between the vibration member 100 and the first curved surface portion 350a, and can face or directly face the back surface of the vibration member 100. For example, the first vibration device 500-1 can be coupled or attached to the inner surface (or internal surface) of the first curved surface portion 350a that faces or directly faces the back surface of the vibration member 100. For example, the first vibration device 500-1 can be coupled or attached to the first curved surface portion 350a within the gap space (GS) provided by the first protruding portion 340a. For example, the first vibration device 500-1 can be coupled or attached to the inner surface (or internal curved surface) of the first curved surface portion 350a within the gap space (GS) provided by the first protruding portion 340a.

[0235] The first vibration device 500-1 (or the vibration generator) can be coupled to or attached to the first curved surface portion 350a so as to have an equiangular shape that follows the curvature of the first curved surface portion 350a as it is, but the embodiments of the present specification are not limited thereto. For example, the first vibration device 500-1 can be coupled to or attached to the first curved surface portion 350a so as to have a non-equiangular shape that does not follow the curvature of the first curved surface portion 350a as it is, or to have a curvature different from the curvature of the first curved surface portion 350a. Thereby, the first vibration device 500-1 can generate sound or sound waves by receiving prestress (or pre-tensile stress) from the first curved surface portion 350a or vibrating in a curved state of the curved surface shape. The sound (or sound wave) generated by the vibration of the first vibration device 500-1 can be directly transmitted to the vibration member 100 through the gap space (GS), and thereby, since the vibration of the first vibration device 500-1 can be efficiently transmitted to the vibration member 100, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be improved. For example, the first region of the vibration member 100 that overlaps with the first vibration device 500-1 can vibrate by receiving the transmission of the sound or sound wave generated by the vibration of the first vibration device 500-1, thereby generating or outputting acoustic and / or haptic feedback.

[0236] The first vibration device 500-2 (or the vibration generator) of the vibration device 500 can be coupled to or attached to the second curved surface portion 350b. The second vibration device 500-2 is coupled to or attached to the second curved surface portion 350b between the vibration member 100 and the second curved surface portion 350b, and can face the back surface of the vibration member 100 or directly face the back surface of the vibration member 100. For example, the second vibration device 500-2 can be coupled to or attached to the inner surface (or the internal surface) of the second curved surface portion 350b that faces the back surface of the vibration member 100 or directly faces the back surface of the vibration member 100. For example, the second vibration device 500-2 can be coupled to or attached to the second curved surface portion 350b within the gap space (GS) provided by the second protrusion 340b. For example, the second vibration device 500-2 can be coupled to or attached to the inner surface (or the internal curved surface) of the second curved surface portion 350b within the gap space (GS) provided by the second protrusion 340b.

[0237] The second vibration device 500-2 (or the vibration generator) can be coupled to or attached to the second curved surface portion 350b so as to have an equiangular shape that follows the curvature of the second curved surface portion 350b exactly, but the embodiments of this specification are not limited thereto. For example, the second vibration device 500-2 can be coupled to or attached to the second curved surface portion 350b so as to have a non-equiangular shape that does not follow the curvature of the second curved surface portion 350b exactly or has a curvature different from the curvature of the second curved surface portion 350b. Thereby, the second vibration device 500-2 can generate sound or sound waves by receiving pre-stress (or pre-tensile stress) from the second curved surface portion 350b or vibrating in a state bent into a curved surface shape. The sound (or sound wave) generated by the vibration of the second vibration device 500-2 can be directly transmitted to the vibration member 100 through the gap space (GS), whereby the vibration of the second vibration device 500-2 can be efficiently transmitted to the vibration member 100, so the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be improved. For example, the second region of the vibration member 100 that overlaps with the second vibration device 500-2 can vibrate by receiving the transmission of the sound or sound wave generated by the vibration of the second vibration device 500-2, so as to generate or output acoustic and / or haptic feedback.

[0238] The device 3 according to the third embodiment of this specification includes a vibration device 500 (or a vibration generator) that receives pre-stress (or pre-tensile stress) or vibrates in a state bent into a curved surface shape, so that the second moment of inertia of the vibration device 500 increases or the vibration direction of the vibration device 500 is unified in one direction. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibration member 100 that vibrates due to the vibration of the vibration device 500 can be improved. And the device 3 according to the third embodiment of this specification can be slimmed down by arranging the vibration device 500 in the gap space (GS) between the vibration member 100 and the support member 300. Since the vibration device 500 is not exposed to the outside, the aesthetic sense of the design of the back surface of the outermost contour can be improved.

[0239] The apparatus 3 according to the third embodiment of the present specification may further include an enclosure 950.

[0240] The enclosure 950 may be arranged to cover the protruding portion 340 and the curved surface portion 350 of the support member 300. The enclosure 950 may be connected or coupled to the back surface of the support member 300 so as to cover the protruding portion 340 and the curved surface portion 350 of the support member 300. For example, the enclosure 950 may be connected or coupled to the back surface of the back surface portion 310 of the support member 300 via a coupling member 951. The enclosure 950 can form a sealed space that covers or surrounds the protruding portion 340 and the curved surface portion 350 of the support member 300. For example, the enclosure 950 may be a sealing member, a sealing cap, a sealing box, or a sound box, but the embodiments of the present specification are not limited thereto. The sealed space may be an air gap, a vibration space, an acoustic space, or a resonance box, but the embodiments of the present specification are not limited thereto.

[0241] The enclosure 950 may include one or more of a metal material or a non-metal material (or a composite non-metal material). For example, the enclosure 950 may include one or more of metal, plastic, and wood, but the embodiments of the present specification are not limited thereto.

[0242] The enclosure 950 according to an embodiment of the present specification can keep constant the impedance component due to air acting on the curved surface portion 350 of the support member 300 when the curved surface portion 350 of the support member 300 or the vibration device 500 vibrates. For example, the air around the support member 300 comes to resist the vibration of the curved surface portion 350 of the support member 300 and acts as an impedance component having different resistance and reactance components depending on the frequency. Accordingly, the enclosure 950 forms a sealed space surrounding the protruding portion 340 and the curved surface portion 350 of the support member 300 on the back surface of the support member 300, thereby keeping constant the impedance component (or air impedance or elastic impedance) acting on the curved surface portion 350 of the support member 300 due to air. Thereby, the enclosure 950 can improve the acoustic characteristics and / or sound pressure characteristics in the low frequency band and improve the sound quality of the sound in the high frequency band.

[0243] The device 3 according to the third embodiment of the present specification can have improved acoustic characteristics and / or sound pressure characteristics in the low frequency band and improved sound quality of the sound in the high frequency band by the enclosure 950.

[0244] FIG. 20 is another cross-sectional view taken along line II-II' shown in FIG. 2. FIG. 21 is a rear perspective view showing the support member shown in FIG. 20. FIGS. 20 and 21 are diagrams for explaining the device according to the fourth embodiment of the present invention. FIGS. 20 and 21 are the devices described with reference to FIGS. 18 and 19, in which holes are further formed in the curved surface portion of the support member.

[0245] Referring to FIGS. 20 and 21, the device 4 according to the fourth embodiment of the present specification can include a vibration member 100, a support member 300, and a vibration device 500.

[0246] Since the vibration member 100 is the same as or substantially the same as that described with reference to FIGS. 18 and 19, the same reference numerals are given thereto, and duplicate descriptions thereof can be omitted.

[0247] The support member 300 can be configured to support the vibration member 100. The support member 300 can include a back surface portion 310, side surface portions 330, a protruding portion 340, a curved surface portion 350, and a hole 360. Since each of the back surface portion 310, side surface portions 330, protruding portion 340, and curved surface portion 350 is the same as or substantially the same as each of the back surface portion 310, side surface portions 330, and protruding portion 340 described with reference to FIGS. 18 and 19, duplicate descriptions thereof may be omitted. Further, except that the curved surface portion 350 includes the hole 360, the curved surface portion 350 is the same as or substantially the same as the curved surface portion 350 described with reference to FIGS. 18 and 19, and thus duplicate descriptions thereof may be omitted for the sake of brevity.

[0248] The support member 300 can further include one or more holes 360 formed in the curved surface portion 350. The support member 300 can include one or more holes 360 formed in each of a first curved surface portion 350a and a second curved surface portion 350b of the curved surface portion 350. Since the one or more holes 360 are the same as the one or more holes 360 described with reference to FIGS. 12 to 14, except that they are formed in the curved surface portion 350 formed in the protruding portion 340, duplicate descriptions thereof may be omitted.

[0249] The one or more holes 360 can be formed in each of the first curved surface portion 350a and the second curved surface portion 350b of the curved surface portion 350 and can have a size smaller than that of the vibration devices 500-1 and 500-2.

[0250] Each of the first and second vibration devices 500-1 and 500-2 of the vibration device 500 can be connected to or attached to the curved surface portions 350a and 350b so as to cover the one or more holes 360, and thus can receive a pre-stress (or pre-tensile stress) due to the curvature of the curved surface portion 350 or can vibrate in a curved state, and thus can include effects such as an increase in the second moment of inertia or the unification of the vibration direction.

[0251] One or more holes 360 formed in each of the first curved surface portion 350a and the second curved surface portion 350b may be disposed on the back surface of each of the first and second vibration devices 500-1 and 500-2. Thereby, the vibration (or displacement) of each of the first and second vibration devices 500-1 and 500-2 is performed smoothly, so that the vibration amplitude (or displacement amplitude) of each of the first and second vibration devices 500-1 and 500-2 can be increased. Thereby, the sound pressure generated in the gap space (GS) is increased by the vibration of each of the first and second vibration devices 500-1 and 500-2, so that the vibration amplitude (or displacement amplitude) of the vibration member 100 vibrating by the sound pressure in the gap space (GS) can be increased. Thereby, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be further improved.

[0252] The device 4 according to the fourth embodiment of the present specification includes a vibration device 500 (or a vibration generator) that is subjected to prestress (or pre-tensile stress) or vibrates in a curved shape, so that the second moment of inertia of the cross section of the vibration device 500 increases, or the vibration direction of the vibration device 500 is unified in one direction. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibration member 100 vibrating due to the vibration of the vibration device 500 can be improved. And the device 4 according to the fourth embodiment of the present specification includes one or more holes 360 formed in the curved surface portion 350 of the support member 300. As the vibration of the vibration device 500 is performed more smoothly, the vibration amplitude (or displacement amplitude) of each of the first and second vibration devices 500-1 and 500-2 can be increased. Thereby, the vibration amplitude (or displacement amplitude) of the vibration member 100 is increased, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be further improved.

[0253] The device 4 according to the fourth embodiment of the present specification may further include an enclosure 950. Since the enclosure 950 is substantially the same as the enclosure 950 described with reference to FIG. 18, duplicate descriptions thereof may be omitted. With the enclosure 950, the acoustic characteristics and / or sound pressure characteristics in the low frequency band of the device 4 according to the fourth embodiment of the present specification can be improved, and the sound quality of the sound in the high frequency band can be improved.

[0254] FIGS. 22A to 22E are rear perspective views showing a support member according to another embodiment of the present specification. FIGS. 22A to 22E show a modified curved surface portion of the support member shown in FIGS. 18 and 19.

[0255] Referring to FIGS. 22A to 22E, the protrusion 340 of the support member 300 according to another embodiment of the present specification may include first to third protrusions 340a, 340b, and 340c disposed in the first to third regions 300A1, 300A2, and 300A3 of the back surface portion 310, respectively. The protrusion 340 is substantially the same as the protrusion 340 described with reference to FIG. 19, except that it further includes a third protrusion 340c disposed in the third region 300A3 of the back surface portion 310. Thus, duplicate descriptions thereof may be omitted.

[0256] The curved surface portion 350 of the support member 300 according to another embodiment of the present specification may include first to third curved surface portions 350a, 350b, and 350c formed on the first to third protrusions 340a, 340b, and 340c disposed in the first to third regions 300A1, 300A2, and 300A3 of the back surface portion 310, respectively.

[0257] Since the protruding structures and curvatures of the first to third curved surface portions 350a, 350b, and 350c are the same as or substantially the same as those described with reference to FIG. 19, duplicate descriptions thereof may be omitted.

[0258] The vibration device 500 can include a first vibration device 500-1 disposed on the first curved surface portion 350a, a second vibration device 500-2 disposed on the second curved surface portion 350b, and a third vibration device 500-3 disposed on the third curved surface portion 350c. Each of the first to third vibration devices 500-1, 500-2, 500-3 can receive prestress (or pre-tensile stress) according to the respective curvatures of the first to third curved surface portions 350a, 350b, 350c, or can vibrate in a state bent into a curved surface shape, so it can include effects such as an increase in the second moment of inertia or the unification of the vibration direction.

[0259] The support member 300 according to another embodiment of the present specification can include one or more holes 360 formed in one or more of the first to third curved surface portions 350a, 350b, 350c.

[0260] According to an embodiment of the present specification, one or more holes 360 can be formed in each of the first and second curved surface portions 350a, 350b among the first to third curved surface portions 350a, 350b, 350c, as shown in FIG. 22B. One or more holes 360 are substantially the same as the one or more holes 360 described with reference to FIGS. 20 and 21, except that they are formed in each of the first and second curved surface portions 350a, 350b. Therefore, the same reference numerals are given to them, and overlapping descriptions thereof can be omitted.

[0261] According to another embodiment of the present specification, one or more holes 360 can be formed in the third curved surface portion 350c among the first to third curved surface portions 350a, 350b, 350c, as shown in FIG. 22C. One or more holes 360 are substantially the same as the one or more holes 360 described with reference to FIGS. 20 and 21, except that they are formed in the third curved surface portion 350c. Therefore, the same reference numerals are given to them, and overlapping descriptions thereof can be omitted.

[0262] According to other embodiments of the present specification, one or more holes 360 may be formed in each of the first to third curved surface portions 350a, 350b, 350c as shown in FIG. 22D. Since the one or more holes 360 are substantially the same as the one or more holes 360 described with reference to FIGS. 20 and 21 except that they are formed in each of the first to third curved surface portions 350a, 350b, 350c, the same reference numerals are given thereto, and redundant descriptions thereof may be omitted.

[0263] Referring to FIG. 22E, according to an embodiment of the present specification, one or more of the first to third protrusions 340a, 340b, 340c may protrude from the back surface portion 310 so as to have different sizes. One or more of the first to third protrusions 340a, 340b, 340c may protrude from the back surface portion 310 so as to have a small size. For example, the third protrusion 340c may have a size smaller than each of the first and second protrusions 340a, 340b. In the protrusion 340 shown in FIG. 22E, since the third protrusion 340c is substantially the same as each of the first and second protrusions 340a, 340b except that it has a size smaller than each of the first and second protrusions 340a, 340b, redundant descriptions thereof may be omitted.

[0264] According to an embodiment of the present specification, one or more of the first to third curved surface portions 350a, 350b, 350c may protrude from the protrusion 340 so as to have a shape different from different sizes. One or more of the first to third curved surface portions 350a, 350b, 350c may protrude from the protrusion 340 so as to have different curvatures. For example, the third curved surface portion 350c may have a size smaller than each of the first and second curved surface portions 350a, 350b. In the curved surface portion 350 shown in FIG. 22E, since the third curved surface portion 350c is substantially the same as each of the first and second curved surface portions 350a, 350b except that it has a size smaller than each of the first and second curved surface portions 350a, 350b, redundant descriptions thereof may be omitted.

[0265] The third vibration device 500-3 is disposed on the third curved surface portion 350c and has a size corresponding to the size of the third curved surface portion 350c, so it can have a smaller size than each of the first vibration device 500-1 and the second vibration device 500-2.

[0266] The support member 300 according to another embodiment of the present specification may include one or more holes 360 formed in one or more of the first to third curved surface portions 350a, 350b, 350c. For example, the one or more holes 360 may be formed in each of the first to third curved surface portions 350a, 350b, 350c, but the embodiments of the present specification are not limited thereto. As shown in FIGS. 22B and 22C, the one or more holes 360 shown in FIG. 22E may be formed in the remaining portions excluding any one of the first to third curved surface portions 350a, 350b, 350c.

[0267] Referring to FIGS. 22A to 22E, each of the first to third vibration devices 500-1, 500-2, 500-3 according to an embodiment of the present specification may be configured to generate or output sounds in the same sound range band. Thereby, the device 4 according to the fourth embodiment of the present specification can output sound, for example, stereo sound, by the sounds output from the left side, the right side, and the center side (or the middle side) of the vibration member 100 due to the vibrations of the first to third vibration devices 500-1, 500-2, 500-3, respectively, and can have three-channel sound output characteristics.

[0268] According to other embodiments of this specification, one or more of the first to third vibration devices 500-1, 500-2, and 500-3 may be configured to generate or output sounds in different sound range bands. For example, the third vibration device 500-3 is configured to generate or output sounds in the low sound range band, and each of the first and second vibration devices 500-1 and 500-2 can be configured to generate or output sounds in a wider sound range band than the third vibration device 500-3, but the embodiments of this specification are not limited thereto. Thereby, the device 4 according to the fourth embodiment of this specification can realize sounds, such as stereo sounds, through the left and right sounds output by the vibration of the vibration member 100 due to the driving of each of the first vibration device 500-1 and the second vibration device 500-2, and the acoustic characteristics and / or sound pressure characteristics of the low sound range band can be improved by the sound in the low sound range band output by the vibration of the vibration member 100 due to the driving of the third vibration device 500-3.

[0269] In the device 4 including the support member 300 shown in FIGS. 22B to 22E, as the vibration of the vibration device 500 is performed more smoothly by one or more holes 360 formed in one or more of the first to third curved surface portions 350a, 350b, and 350c of the support member 300, the vibration amplitude (or displacement amplitude) of the vibration device 500 can increase. Thereby, the vibration amplitude (or displacement amplitude) of the vibration member 100 can be increased, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be further improved. And since one or more holes 360 can form a path through which the sound (or sound wave) generated by the vibration of the vibration generator 510 is transmitted (or propagated) to the gap space (GS) or the vibration member 100, monaural sound or stereo sound can be realized. And when one hole 360 is configured as shown in FIG. 22C, a device capable of reproducing monaural sound with a device having reduced cost can be provided.

[0270] In the support member 300 according to other embodiments of this specification, one or more of the first to third protrusions 340a, 340b, and 340c can be surrounded by the enclosure 950 shown in FIG. 20.

[0271] Figs. 23A to 23C are rear perspective views showing a support member according to another embodiment of the present specification. Figs. 23A to 23C are obtained by changing the curved surface portions of the support member shown in Figs. 22A to 22C.

[0272] Referring to Figs. 23A to 23C, a support member 300 according to another embodiment of the present specification can include first and second curved surface portions 350a, 350b, a protruding portion 340, and a third curved surface portion 350c.

[0273] The first and second curved surface portions 350a, 350b can protrude from the back surface portion 310 in the first and second regions 300A1, 300A2 of the support member 300. Since the first and second curved surface portions 350a, 350b are substantially the same as the first and second curved surface portions 350a, 350b described with reference to Figs. 2 to 5, Figs. 11A, 11B, and 17B, the same reference numerals are given thereto, and duplicate descriptions thereof can be omitted.

[0274] The protruding portion 340 can protrude from the back surface portion 310 in the third region 300A3 of the support member 300. Since the protruding portion 340 is substantially the same as the third protruding portion 340c described with reference to Figs. 22A and 22B, duplicate descriptions thereof can be omitted.

[0275] The third curved surface portion 350c can protrude from the protruding portion 340. Since the third curved surface portion 350c is substantially the same as the third curved surface portion 350c described with reference to Figs. 22A and 22B, duplicate descriptions thereof can be omitted.

[0276] Referring to Figs. 23B and 23C, a support member 300 according to another embodiment of the present specification can include one or more holes 360 formed in one or more of the first to third curved surface portions 350a, 350b, 350c.

[0277] According to one embodiment of the present specification, one or more holes 360 may be formed in each of the first and second curved surface portions 350a and 350b among the first to third curved surface portions 350a, 350b, and 350c, as shown in FIG. 23B. Since one or more holes 360 formed in each of the first and second curved surface portions 350a and 350b are substantially the same as one or more holes 360 described with reference to FIGS. 12 and 13, FIGS. 17A, 17C, and 17D, the same reference numerals are given thereto, and overlapping explanations thereof may be omitted. Since the third curved surface portion 350c is substantially the same as the third curved surface portion 350c described with reference to FIGS. 22A, 22B, and 23A, the same reference numerals are given thereto, and overlapping explanations thereof may be omitted.

[0278] According to another embodiment of the present specification, one or more holes 360 may be formed in each of the first to third curved surface portions 350a, 350b, and 350c, as shown in FIG. 23C. Since one or more holes 360 formed in each of the first and second curved surface portions 350a and 350b are substantially the same as FIG. 12B, overlapping explanations thereof may be omitted. Since one or more holes 360 formed in the third curved surface portion 350c are substantially the same as FIGS. 22C and 22D, overlapping explanations thereof may be omitted.

[0279] The apparatus 4 including the support member 300 shown in FIGS. 23A to 23C can realize an acoustic, such as a stereo acoustic, through the left acoustic sound and the right acoustic sound output by the vibration of the vibration member 100 driven by each of the first vibration device 500-1 and the second vibration device 500-2, and the acoustic characteristics and / or sound pressure characteristics in the low frequency band can be improved by the acoustic sound in the low frequency band output by the vibration of the vibration member 100 driven by the third vibration device 500-3. And, the apparatus 4 including the support member 300 shown in FIGS. 23B and 23C includes one or more holes 360 formed in the curved surface portion 350 of the support member 300, so that as the vibration of the vibration device 500 is performed more smoothly, the vibration amplitude (or displacement amplitude) of each of the first to third vibration devices 500-1, 500-2, and 500-3 can be increased. Thereby, the vibration amplitude (or displacement amplitude) of the vibration member 100 can be increased, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be further improved. And, since the one or more holes 360 can form a path through which the acoustic sound (or sound wave) generated by the vibration of the vibration generator 510 is transmitted (or propagated) to the gap space (GS) or the vibration member 100, a monaural acoustic or a stereo acoustic can be realized. And, as shown in FIGS. 23B and 23C, when one hole 360 is configured, an apparatus capable of reproducing a monaural acoustic with a device having reduced cost can be provided.

[0280] In the support member 300 according to another embodiment of the present specification, one or more of the first to third curved surface portions 350a, 350b, and 350c of the curved surface portion 350 can be surrounded by the enclosure 950 shown in FIG. 20.

[0281] FIG. 24 is a diagram showing a vibration generator according to an embodiment of the present specification. FIG. 25 is a cross-sectional view taken along line III-III' shown in FIG. 24. FIG. 26 is a perspective view showing the vibrating portion shown in FIG. 25. FIGS. 24 to 26 are diagrams showing other embodiments of the vibration generator described in FIGS. 1 to 23C.

[0282] Referring to FIGS. 24 to 26, the vibrator 510 according to the first embodiment of the present specification can be represented by a flexible vibrating structure, a flexible oscillator, a flexible vibration generating element, a flexible vibrator, a flexible acoustic device, a flexible acoustic element, a flexible acoustic generating element, a flexible acoustic generator, a flexible actuator, a flexible speaker, a flexible type piezoelectric speaker, a film actuator, a film type piezoelectric composite actuator, a film speaker, a film type piezoelectric speaker, or a film type piezoelectric composite speaker, etc., but the embodiments of the present specification are not limited thereto.

[0283] The vibrator 510 according to the first embodiment of the present specification can include a vibrating portion 511. The vibrating portion 511 can include a vibrating layer 511a, a first electrode layer 511b, and a second electrode layer 511c.

[0284] The vibrating layer 511a can include a piezoelectric material (or electroactive material) including a piezoelectric effect. For example, the piezoelectric material can have the property that a potential difference is generated by dielectric polarization due to a change in the relative positions of positive (+) ions and negative (-) ions while a pressure or torsional phenomenon acts on the crystal structure by an external force, and conversely, vibration is generated by an electric field due to an applied voltage. For example, the vibrating layer 511a can be expressed as a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric material portion, an electroactive portion, a piezoelectric structure, a piezoelectric composite layer, a piezoelectric composite, or a piezoelectric ceramic composite, etc., and the embodiments of the present specification are not limited thereto. The vibrating layer 511a can be made of a transparent, translucent, or opaque piezoelectric material. The vibrating layer 511a can be transparent, translucent, or opaque.

[0285] The vibration layer 511a according to an embodiment of the present specification may include a plurality of first portions 511a1 and a plurality of second portions 511a2. For example, the plurality of first portions 511a1 and the plurality of second portions 511a2 may be alternately and repeatedly arranged along the first direction (X) (or the second direction (Y)). For example, the first direction (X) may be the lateral direction of the vibration layer 511a. The second direction (Y) can be the longitudinal direction of the vibration layer 511a intersecting the first direction (X), but is not limited thereto. The first direction (X) may be the longitudinal direction of the vibration layer 511a, and the second direction (Y) may be the lateral direction of the vibration layer 511a.

[0286] Each of the plurality of first portions 511a1 may be composed of an inorganic material portion. The inorganic material portion may include a piezoelectric material including a piezoelectric effect, a composite piezoelectric material, or an electroactive material.

[0287] Each of the plurality of first portions 511a1 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 crystal structure. The perovskite crystal structure may be a structure having piezoelectric and inverse piezoelectric effects and having orientation. The perovskite crystal structure is represented by the chemical formula ABO3, where the A site may consist of a divalent metal element and the B site may consist of a tetravalent metal element. As an example in the present specification, in the chemical formula ABO3, the A site and the B site may be cations, and O may be an anion. For example, each of the plurality of first portions 511a1 may include at least one or more of PbTiO3, PbZrO3, PbZrTiO3, BaTiO3, and SrTiO3, but the examples in the present specification are not limited thereto.

[0288] The perovskite crystal structure can generate a piezoelectric effect due to external stress or magnetic field, causing the position of the central ion, for example, titanium (Ti) ions in the case of PbTiO3, to fluctuate and the polarization (polarization or poling) to change. For example, the perovskite crystal structure can change from a cubic shape, which is a symmetric structure, to a non-symmetric structure such as tetragonal, orthorhobic, or rhombohedral shapes due to external stress or magnetic field, thereby generating a piezoelectric effect. The tetragonal or rhombohedral morphotropic phase boundary with a non-symmetric structure has a high polarization and easy rearrangement of polarization, so it can have high piezoelectric properties.

[0289] The vibrating layer 511a or the first portion 511a1 according to other embodiments of the present specification can include one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), and niobium (Nb), but the embodiments of the present specification are not limited thereto.

[0290] The vibrating layer 511a or the first portion 511a1 according to other embodiments of the present specification can include a PZT (lead zirconate titanate) - based material containing lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nickel niobate) - based material containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of the present specification are not limited thereto. Other embodiments of the present specification can include at least one or more of CaTiO3, BaTiO3, and SrTiO3 that do not contain lead (Pb) in the vibrating layer 511a or the first portion 511a1, but the embodiments of the present specification are not limited thereto.

[0291] Each of the plurality of first portions 511a1 according to an embodiment of the present specification is disposed between the plurality of second portions 511a2, and while having a first width (W1) parallel to the first direction (X) (or the second direction (Y)), it can have a length parallel to the second direction (Y) (or the first direction (X)). Each of the plurality of second portions 511a2 can have a length parallel to the second direction (Y) (or the first direction (X)) while having a second width (W2) parallel to the first direction (X) (or the second direction (Y)). The first width (W1) can be the same as or different from the second width (W2). For example, the first width (W1) may be larger than the second width (W2). For example, the first portion 511a1 and the second portion 511a2 can include a line shape or a stripe shape having the same or different sizes from each other. Therefore, the vibration layer 511a can have a 2-2 composite structure having piezoelectric characteristics in a 2-2 vibration mode, and thus can have a resonance frequency of 20 kHz or less, but is not limited thereto. For example, the resonance frequency of the vibration layer 511a can be changed based on at least one of shape, length, and thickness.

[0292] In one embodiment of the vibration layer 511a, each of the plurality of first portions 511a1 and the plurality of second portions 511a2 can be arranged (or arrayed) side by side in the same plane (or the same layer). Each of the plurality of second portions 511a2 is configured to fill the gap between two adjacent first portions 511a1, and thus can be connected or adhered to the adjacent first portion 511a1. Thereby, the vibration layer 511a can be extended to a desired size or length by side coupling (or connection) of the first portion 511a1 and the second portion 511a2.

[0293] In one embodiment of the vibration layer 511a, the width (W2) of each of the plurality of second portions 511a2 can gradually decrease from the middle portion of the vibration layer 511a toward both edge portions (or both ends).

[0294] According to an embodiment of the present specification, among the plurality of second portions 511a2, the second portion 511a2 having the largest width (W2) can be located at the portion where the largest stress is concentrated when the vibration layer 511a or the vibration generator 510 vibrates in the vertical direction (Z) (or the thickness direction). Among the plurality of second portions 511a2, the second portion 511a2 having the smallest width (W2) can be located at the portion where the relatively smallest stress is generated when the vibration layer 511a or the vibration generator 510 vibrates in the vertical direction (Z). For example, among the plurality of second portions 511a2, the second portion 511a2 having the largest width (W2) is disposed in the middle portion of the vibration layer 511a, and among the plurality of second portions 511a2, the second portion 511a2 having the smallest width (W2) can be disposed at both edge portions of the vibration layer 511a. Thereby, when the vibration layer 511a or the vibration generator 510 vibrates in the vertical direction (Z), the interference of sound waves or the superposition of resonance frequencies generated at the portion where the largest stress is concentrated can be minimized, whereby the dipping phenomenon of the sound pressure generated in the low frequency band can be improved, and the flatness of the acoustic characteristics in the low frequency band can be improved. For example, the flatness of the acoustic characteristics can be the magnitude of the deviation between the maximum sound pressure and the minimum sound pressure.

[0295] In the vibration layer 511a, each of the plurality of first portions 511a1 can have a different size (or width or breadth). For example, the size (or width or breadth) of each of the plurality of first portions 511a1 can gradually decrease or increase from the middle portion of the vibration layer 511a or the vibration generator 510 toward both edge portions (or both tips). In this case, the sound pressure characteristics of the sound can be improved by various natural vibration frequencies caused by the vibrations of each of the plurality of first portions 511a1 having different sizes in the vibration layer 511a, and the reproduction band of the sound can be expanded.

[0296] Each of the plurality of second portions 511a2 can be disposed between the plurality of first portions 511a1. Thereby, in the vibration layer 511a or the vibration generator 510, the vibration energy due to the links within the unit cell of the first portion 511a1 can be increased by the second portion 511a2, so that the vibration characteristics can be increased, and piezoelectric characteristics and flexibility can be ensured. For example, the second portion 511a2 can be one or more of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but the embodiments of this specification are not limited thereto.

[0297] Each of the plurality of second portions 511a2 according to an embodiment of this specification can be composed of an organic material portion. For example, by being disposed between each of the inorganic material portions, the organic material portion can absorb the impact applied to the inorganic material portion (or the first portion), release the stress concentrated on the inorganic material portion, improve the durability of the vibration layer 511a or the vibration generator 510, and provide flexibility to the vibration layer 511a or the vibration generator 510. Thereby, the vibration generator 510 can bend into a shape that matches the shape of the curved surface portion of the support member by having flexibility. For example, the vibration generator 510 can be disposed along the shape of the curved surface portion of the support member by having flexibility.

[0298] The second portion 511a2 according to an embodiment of this specification can have a low modulus (Young's modulus) and viscoelasticity as compared with the first portion 511a1, thereby improving the reliability of the first portion 511a1, which is vulnerable to impact due to the brittle characteristics of the first portion 511a1. For example, the second portion 511a2 can be composed of a material having a loss factor of 0.01 to 1 and a modulus of 0.1 to 10 GPa (Giga Pascal).

[0299] The organic material part configured in the second part 511a2 can include an organic material, an organic polymer, an organic piezoelectric material, or an organic non-piezoelectric material having flexible characteristics as compared with the inorganic material part of the first part 511a1. For example, the second part 511a2 can be represented by an adhesive part, an expansion and contraction part, a bending part, a damping part, or a soft part having flexibility, but the embodiments in this specification are not limited thereto.

[0300] In the vibration layer 511a according to the embodiments of this specification, a plurality of first parts 511a1 and second parts 511a2 can be arranged (or connected) on the same plane to have the form of a single thin film or a single thin film. For example, the vibration layer 511a can have a structure in which a plurality of first parts 511a1 are connected to one side. For example, a plurality of first parts 511a1 can have a connection structure throughout the entire vibration layer 511a. For example, the vibration layer 511a can vibrate vertically by the first part 511a1 having vibration characteristics and can be bent into a curved surface shape by the second part 511a2 having flexibility. Also, in the vibration layer 511a according to the embodiments of this specification, the size of the first part 511a1 and the size of the second part 511a2 can be set according to the piezoelectric characteristics and flexibility required for the vibration layer 511a or the vibration generator 510. As an embodiment of this specification, in the case of the vibration layer 511a that requires piezoelectric characteristics more than flexibility, the size of the first part 511a1 can be configured to be larger than the size of the second part 511a2. As another embodiment of this specification, in the case of the vibration layer 511a that requires flexibility more than piezoelectric characteristics, the size of the second part 511a2 can be configured to be larger than the size of the first part 511a1. Therefore, since the size of the vibration layer 511a can be adjusted according to the required characteristics, there is an advantage that the design of the vibration layer 511a is easy.

[0301] The first electrode layer 511b can be disposed on the first surface (or upper surface) of the vibrating layer 511a. The first electrode layer 511b can be commonly disposed or coupled to the first surface of each of the plurality of first portions 511a1 and the first surface of each of the plurality of second portions 511a2, and can be electrically connected to the first surface of each of the plurality of first portions 511a1. For example, the first electrode layer 511b can have a shape of a single electrode (or one electrode) disposed on the entire first surface of the vibrating layer 511a. For example, the first electrode layer 511b can have a shape substantially the same as that of the vibrating layer 511a, but the embodiments of the present specification are not limited thereto.

[0302] The second electrode layer 511c can be disposed on a second surface (or back surface) different from (or opposite to) the first surface of the vibrating layer 511a. The second electrode layer 511c can be commonly disposed or coupled to the second surface of each of the plurality of first portions 511a1 and the second surface of each of the plurality of second portions 511a2. For example, the second electrode layer 511c can have a shape of a single electrode (or one electrode) disposed on the entire second surface of the vibrating layer 511a. For example, the second electrode layer 511c can have the same shape as the vibrating layer 511a, but the embodiments of the present specification are not limited thereto.

[0303] One or more of the first electrode layer 511b and the second electrode layer 511c according to an embodiment of the present specification can be made of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the transparent or translucent conductive material can include ITO (indium tin oxide) or IZO (indium zinc oxide), but the embodiments of the present specification are not limited thereto. The opaque conductive material can include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), or magnesium (Mg), etc., or can be made of an alloy thereof, but the embodiments of the present specification are not limited thereto.

[0304] The vibrating layer 511a can be polarized (or metallurgically treated) by a constant voltage applied to the first electrode layer 511b and the second electrode layer 511c in a constant temperature atmosphere or a temperature atmosphere that changes from high temperature to normal temperature, but the embodiments of this specification are not limited thereto. For example, the vibrating layer 511a can vibrate by alternately repeating contraction and / or expansion due to the inverse piezoelectric effect of an acoustic signal (or voice signal or drive signal) applied to the first electrode layer 511b and the second electrode layer 511c from the outside. For example, the vibrating layer 511a can vibrate by vibrations in the vertical direction (or thickness direction) (d33) and vibrations in the planar direction (d31) caused by an acoustic signal applied to the first electrode layer 511b and the second electrode layer 511c. The vibrating layer 511a can increase the displacement of the vibrating member by contraction and / or expansion in the planar direction, thereby further improving the vibration of the vibrating member.

[0305] The vibration generator 510 according to the first embodiment of this specification can further include a first cover member 512 and a second cover member 513.

[0306] The first cover member 512 can be disposed on the first surface of the vibrating portion 511. For example, the first cover member 512 can be configured to cover the first electrode layer 511b. Therefore, the first cover member 512 can protect the first electrode layer 511b.

[0307] The second cover member 513 can be disposed on the second surface of the vibrating portion 511. For example, the second cover member 513 can be configured to cover the second electrode layer 511c. Therefore, the second cover member 513 can protect the second electrode layer 511c.

[0308] Each of the first cover member 512 and the second cover member 513 according to an embodiment of the present specification can include one or more materials among plastic, fiber, cloth, paper, leather, rubber, and wood, and the embodiments of the present specification are not limited thereto. For example, each of the first cover member 512 and the second cover member 513 can include the same or different materials from each other. For example, each of the first cover member 512 and the second cover member 513 can be a PI (Polyimide) film or a PET (Polyethylene terephthalate) film, but the embodiments of the present specification are not limited thereto.

[0309] The first cover member 512 according to an embodiment of the present specification can be connected or bonded to the first electrode layer 511b via the first adhesive layer 514. For example, the first cover member 512 can be connected or bonded to the first electrode layer 511b by a film lamination process mediated by the first adhesive layer 514.

[0310] The second cover member 513 according to an embodiment of the present specification can be connected or bonded to the second electrode layer 511c via the second adhesive layer 515. For example, the second cover member 513 can be connected or bonded to the second electrode layer 511c by a film lamination process mediated by the second adhesive layer 515. For example, by the first cover member 512 and the second cover member 513, the vibrator 510 can be realized with one film.

[0311] The first adhesive layer 514 can be disposed between the first electrode layer 511b and the first cover member 512. The second adhesive layer 515 can be disposed between the second electrode layer 511c and the second cover member 513. For example, the first adhesive layer 514 and the second adhesive layer 515 can be configured between the first cover member 512 and the second cover member 513 so as to completely surround the vibration layer 511a, the first electrode layer 511b, and the second electrode layer 511c. For example, the vibration layer 511a, the first electrode layer 511b, and the second electrode layer 511c can be embedded or built-in between the first adhesive layer 514 and the second adhesive layer 515.

[0312] Each of the first adhesive layer 514 and the second adhesive layer 515 according to the embodiments of the present specification can include an electrically insulating material that has adhesiveness and is capable of compression and restoration. For example, each of the first adhesive layer 514 and the second adhesive layer 515 can include an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin, but the embodiments of the present specification are not limited thereto.

[0313] According to an embodiment of the present specification, either the first cover member 512 or the second cover member 513 can be coupled or attached to the curved surface portion 350 of the support member 300 via the connecting member 520, as shown in FIGS. 5 and 6.

[0314] According to an embodiment of the present specification, either the first cover member 512 or the second cover member 513 can be coupled or attached to the curved surface portion 350 of the support member 300 via the first connecting member 560, the plate 540, and the second connecting members 550 and 560, as shown in FIGS. 5, 7 to 9, 12, and 15.

[0315] The vibration generator 510 according to an embodiment of the present specification can further include a first power supply line (PL1) disposed on the first cover member 512, a second power supply line (PL2) disposed on the second cover member 513, and a pad portion 516 electrically connected to the first power supply line (PL1) and the second power supply line (PL2).

[0316] The first power supply line (PL1) is disposed between the first electrode layer 511b and the first cover member 512 and can be electrically connected to the first electrode layer 511b. The first power supply line (PL1) extends long along the second direction (Y) and can be electrically connected to the central portion of the first electrode layer 511b. As an example of the embodiments herein, the first power supply line (PL1) can be electrically connected to the first electrode layer 511b through an anisotropic conductive film. As another example of the embodiments herein, the first power supply line (PL1) can be electrically connected to the first electrode layer 511b through the conductive material (or particles) contained in the first adhesive layer 514.

[0317] The second power supply line (PL2) is disposed between the second electrode layer 511c and the second cover member 513 and can be electrically connected to the second electrode layer 511c. The second power supply line (PL2) extends long along the second direction (Y) and can be electrically connected to the central portion of the second electrode layer 511c. As an example of the embodiments herein, the second power supply line (PL2) can be electrically connected to the second electrode layer 511c through an anisotropic conductive film. As another example of the embodiments herein, the second power supply line (PL2) can be electrically connected to the second electrode layer 511c through the conductive material (or particles) contained in the second adhesive layer 515.

[0318] For example, the first power supply line (PL1) can be arranged so as not to overlap the second power supply line (PL2). When the first power supply line (PL1) is arranged so as not to overlap the second power supply line (PL2), the problem of short circuit between the first power supply line (PL1) and the second power supply line (PL2) can be improved.

[0319] The pad portion 516 can be formed at the edge portion on one side of either the first cover member 512 or the second cover member 513 so as to be electrically connected to one side (or one end) of each of the first power supply line (PL1) and the second power supply line (PL2).

[0320] The pad portion 516 according to an embodiment of the present specification may include a first pad electrode electrically connected to one end of a first power supply line (PL1) and a second pad electrode electrically connected to one end of a second power supply line (PL2).

[0321] The first pad electrode may be disposed at an edge portion on one side of either the first cover member 512 or the second cover member 513 and connected to one end of the first power supply line (PL1). For example, the first pad electrode may penetrate either the first cover member 512 or the second cover member 513 and be electrically connected to one end of the first power supply line (PL1).

[0322] The second pad electrode may be disposed side by side with the first pad electrode and connected to one end of the second power supply line (PL2). For example, the second pad electrode may penetrate either the first cover member 512 or the second cover member 513 and be electrically connected to one end of the second power supply line (PL2).

[0323] According to an embodiment of the present specification, each of the first power supply line (PL1), the second power supply line (PL2), and the pad portion 516 may be configured to be transparent, translucent, or opaque.

[0324] The pad portion 516 according to an embodiment of the present specification may be electrically connected to a signal cable 517.

[0325] The signal cable 517 is electrically connected to the pad portion 516 disposed on the vibration generator 510, and can supply a vibration drive signal (or an acoustic signal or a voice signal) provided from the acoustic processing circuit to the vibration generator 510. The signal cable 517 according to an embodiment of the present specification may include a first terminal electrically connected to the first pad electrode of the pad portion 516 and a second terminal electrically connected to the second pad electrode of the pad portion 516. For example, the signal cable 517 may be composed of 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, but the embodiments of the present specification are not limited thereto.

[0326] The acoustic processing circuit can generate an alternating vibration drive signal including a first vibration drive signal and a second vibration drive signal based on the acoustic data supplied from an external acoustic data generation circuit unit. The first vibration drive signal can be either a positive-polarity (+) vibration drive signal or a negative-polarity (-) vibration drive signal, and the second vibration drive signal can be either a positive-polarity (+) vibration drive signal or a negative-polarity (-) vibration drive signal. For example, the first vibration drive signal can be supplied to the first electrode layer 511b via the first terminal of the signal cable 517, the first pad electrode of the pad portion 516, and the first power supply line (PL1). The second vibration drive signal can be supplied to the second electrode layer 511c via the second terminal of the signal cable 517, the second pad electrode of the pad portion 516, and the second power supply line (PL2).

[0327] According to an embodiment of the present specification, the signal cable 517 can be configured to be transparent, translucent, or opaque.

[0328] The vibration generator 510 according to the first embodiment of the present specification can be realized in the form of a thin film or a thin film-like shape by alternately and repeatedly connecting a first portion 511a1 having piezoelectric characteristics and a second portion 511a2 having flexibility. Thereby, the vibration generator 510 can be bent into a shape corresponding to the curved surface portion of the support member or the shape of the vibration member. For example, when the vibration generator 510 is connected or coupled to a vibration member including various curved surface portions via a connecting member, it can be bent into a curved surface shape along the shape of the curved surface portion of the vibration member, and even when bent into a curved surface shape, the reliability such as damage or breakage does not decrease. Further, in the vibration generator 510 according to the first embodiment of the present specification, the vibration width (or displacement width) can be increased by the second portion 511a2 having flexibility. Thereby, the acoustic characteristics and / or sound pressure characteristics in the low frequency band generated by the vibration of the vibration member can be improved.

[0329] FIG. 27 is a perspective view showing another embodiment of the vibrating portion shown in FIG. 25.

[0330] Referring to FIG. 27, the vibration layer 511a according to another embodiment of the present specification can include a plurality of first portions 511a1 spaced apart from each other along a first direction (X) and a second direction (Y), and a second portion 511a2 disposed between the plurality of first portions 511a1.

[0331] Each of the plurality of first portions 511a1 can be arranged to be spaced apart from each other along each of the first direction (X) and the second direction (Y). For example, each of the plurality of first portions 511a1 can be arranged in a lattice form while having a hexahedral state having the same size as each other. Since each of the plurality of first portions 511a1 can be made of substantially the same piezoelectric material as the first portion 511a1 described with reference to FIGS. 24 to 26, the same drawing reference numerals are given thereto, and the overlapping description thereof can be omitted.

[0332] The second part 511a2 can be arranged between a plurality of first parts 511a1 along each of the first direction (X) and the second direction (Y). The second part 511a2 can be connected or adhered to adjacent first parts 511a1 by being configured to fill a gap between two adjacent first parts 511a1 or surround each of the plurality of first parts 511a1. According to an embodiment herein, the width (W4) of the second part 511a2 arranged between two adjacent first parts 511a1 along the first direction (X) can be the same as or different from the width (W3) of the first part 511a1, and the width (W4) of the second part 511a2 arranged between two adjacent first parts 511a1 along the second direction (Y) can be the same as or different from the width (W3) of the first part 511a1. The plurality of second parts 511a2 can be made of substantially the same organic material as the second part 511a2 described with reference to FIGS. 24 to 26, so the same drawing reference numerals are given thereto, and duplicate descriptions thereof can be omitted.

[0333] The vibration layer 511a according to another embodiment herein can have a resonance frequency of 30 MHz or less by including a 1-3 composite structure having piezoelectric characteristics of a 1-3 vibration mode, but the embodiments herein are not limited thereto. For example, the resonance frequency of the vibration layer 511a can be changed based on at least one of shape, length, and thickness.

[0334] FIG. 28 is a perspective view showing another embodiment of the vibrating part shown in FIG. 26.

[0335] Referring to FIG. 28, the vibration layer 511a according to another embodiment herein can include a plurality of first parts 511a1 spaced apart from each other along the first direction (X) and the second direction (Y), and a second part 511a2 arranged between the plurality of first parts 511a1.

[0336] Each of the plurality of first portions 511a1 can have a planar structure in the shape of a circle. For example, each of the plurality of first portions 511a1 can have the shape of a disc, but the embodiments of the present specification are not limited thereto. For example, each of the plurality of first portions 511a1 can have a point shape including an elliptical shape, a polygonal shape, or a donut shape. Since each of the plurality of first portions 511a1 can be made of substantially the same piezoelectric material as the first portion 511a1 described with reference to FIGS. 24 to 26, the same drawing reference numerals are assigned thereto, and duplicate descriptions thereof can be omitted.

[0337] The second portion 511a2 can be disposed between the plurality of first portions 511a1 along each of the first direction (X) and the second direction (Y). The second portion 511a2 can be connected or adhered to the side surfaces of each of the plurality of first portions 511a1 by being configured to surround each of the plurality of first portions 511a1. Each of the plurality of first portions 511a1 and the second portion 511a2 can be arranged (or arrayed) side by side in the same plane (or the same layer). For example, since the second portion 511a2 can be made of substantially the same organic material as the second portion 511a2 described with reference to FIGS. 24 to 26, the same drawing reference numerals are assigned thereto, and duplicate descriptions thereof can be omitted.

[0338] FIG. 29 is a perspective view showing another embodiment of the vibrating portion shown in FIG. 26.

[0339] Referring to FIG. 29, the vibrating layer 511a according to another embodiment of the present specification can include a plurality of first portions 511a1 spaced apart from each other along the first direction (X) and the second direction (Y), and a second portion 511a2 disposed between the plurality of first portions 511a1.

[0340] Each of the plurality of first portions 511a1 can have a triangular planar structure. For example, each of the plurality of first portions 511a1 can have the shape of a triangular plate. Since each of the plurality of first portions 511a1 can be made of substantially the same piezoelectric material as the first portion 511a1 described with reference to FIGS. 24 to 26, the same drawing reference numerals are given thereto, and duplicate descriptions thereof can be omitted.

[0341] According to one embodiment of the present specification, four adjacent first portions 511a1 among the plurality of first portions 511a1 can be arranged adjacent to each other so as to form a square shape (or a regular square shape). Each vertex of the four adjacent first portions 511a1 forming a square shape can be arranged adjacent to the central portion (or the exact center) of the square shape.

[0342] The second portion 511a2 can be arranged between the plurality of first portions 511a1 along each of the first direction (X) and the second direction (Y). By being configured to surround each of the plurality of first portions 511a1, the second portion 511a2 can be connected or adhered to the side surfaces of each of the plurality of first portions 511a1. Each of the plurality of first portions 511a1 and the second portion 511a2 can be arranged (or arrayed) side by side in the same plane (or the same layer). For example, since the second portion 511a2 can be made of substantially the same organic material as the second portion 511a2 described with reference to FIGS. 24 to 26, the same drawing reference numerals are given thereto, and duplicate descriptions thereof can be omitted.

[0343] According to other embodiments of this specification, among a plurality of first portions 511a1 having a triangular shape, 2N (N is a natural number of 2 or more) adjacent first portions 511a1 can be arranged adjacent to each other so as to form a 2N-sided shape. For example, six adjacent first portions 511a1 among the plurality of first portions 511a1 can be arranged adjacent to each other so as to form a hexagonal shape (or a regular hexagonal shape). Each vertex of the six adjacent first portions 511a1 having a hexagonal shape can be arranged adjacent to the central portion (or the exact center portion) of the hexagonal shape. The second portion 511a2 can be connected or adhered to the side surfaces of each of the plurality of first portions 511a1 by being configured to surround each of the plurality of first portions 511a1. Each of the plurality of first portions 511a1 and the second portion 511a2 can be arranged (or arrayed) side by side with each other on the same plane (or the same layer).

[0344] FIG. 30 is a diagram showing a vibrator according to another embodiment of this specification, and FIG. 31 is a cross-sectional view taken along line IV-IV' shown in FIG. 30. FIGS. 30 and 31 are diagrams showing another embodiment of the vibrator described with reference to FIGS. 1 to 23C.

[0345] Referring to FIGS. 30 and 31, a vibrator 510 according to another embodiment of this specification can include first and second vibrating portions 511-1 and 511-2.

[0346] Each of the first and second vibrating portions 511-1 and 511-2 can be electrically separated and arranged while being spaced apart from each other along the first direction (X). Each of the first and second vibrating portions 511-1 and 511-2 can vibrate by alternately or repeatedly contracting and / or expanding due to the piezoelectric effect. For example, the first and second vibrating portions 511-1 and 511-2 can be arranged at regular intervals along the first direction (X) or tiled. Thereby, the vibrator 510 in which the first and second vibrating portions 511-1 and 511-2 are tiled can be a vibration array, a vibration array portion, a vibration module array portion, a vibration array structure, a tiled vibration array, a tiled vibration array module, or a tiled vibration film.

[0347] Each of the first and second vibrating parts 511-1 and 511-2 according to the embodiments of this specification can have a square shape. For example, each of the first and second vibrating parts 511-1 and 511-2 can have a square shape with a width of 5 cm or more. For example, each of the first and second vibrating parts 511-1 and 511-2 can have a square shape with a size of 5 cm × 5 cm or more, but the embodiments of this specification are not limited thereto.

[0348] Each of the first and second vibrating parts 511-1 and 511-2 is arranged on the same plane or tiled, so that the vibration generator 510 can be enlarged in area by tiling the first and second vibrating parts 511-1 and 511-2 having a relatively small size.

[0349] Each of the first and second vibrating parts 511-1 and 511-2 can be realized as one vibrating device (or single vibrating device) that is not driven independently but is driven in the form of a complete single entity by being arranged at a certain interval or tiled. According to an embodiment of this specification, based on the first direction (X), the first separation distance (D1) between the first and second vibrating parts 511-1 and 511-2 can be 0.1 mm or more and less than 3 cm, but the embodiments of this specification are not limited thereto.

[0350] According to the embodiments of this specification, each of the first and second vibrating parts 511-1 and 511-2 is arranged or tiled so as to have a separation distance (or interval) (D1) of 0.1 mm or more and less than 3 cm, and can be driven as one vibrating device. The reproduction band of the sound and the sound pressure characteristics of the sound generated in conjunction with the integrated vibration of the first and second vibrating parts 511-1 and 511-2 can each be increased. For example, in order to increase the reproduction band of the sound generated in conjunction with the integrated vibration of the first and second vibrating parts 511-1 and 511-2 and increase the sound pressure characteristics of the low-frequency band sound, for example, the sound below 500 Hz, the first and second vibrating parts 511-1 and 511-2 can be arranged at an interval (D1) of 0.1 mm or more and less than 5 mm.

[0351] According to an embodiment of the present specification, when the first and second vibrating parts 511-1 and 511-2 are arranged at an interval (D1) of less than 0.1 mm or without an interval (D1), the reliability of the first and second vibrating parts 511-1 and 511-2 or the vibration generator 510 may be reduced due to the occurrence of cracks or breakage caused by physical contact between them during the vibration of each of the first and second vibrating parts 511-1 and 511-2.

[0352] According to an embodiment of the present specification, when the first and second vibrating parts 511-1 and 511-2 are arranged at an interval (D1) of 3 cm or more, due to the independent vibrations of the first and second vibrating parts 511-1 and 511-2, the first and second vibrating parts 511-1 and 511-2 may not be driven as one vibration device. As a result, the reproduction band of the sound generated by the vibrations of the first and second vibrating parts 511-1 and 511-2 and the sound pressure characteristics of the sound may be reduced. For example, when the first and second vibrating parts 511-1 and 511-2 are arranged at an interval (D1) of 3 cm or more, the acoustic characteristics and the sound pressure characteristics in the low frequency band, for example, below 500 Hz, may each be reduced.

[0353] According to an embodiment of the present specification, when the first and second vibrating parts 511-1 and 511-2 are arranged at an interval (D1) of 5 mm, since each of the first and second vibrating parts 511-1 and 511-2 is not driven as one vibration device, the acoustic characteristics and the sound pressure characteristics in the low frequency band, for example, below 200 Hz, may each be reduced.

[0354] According to another embodiment of the present specification, when the first and second vibrating parts 511-1 and 511-2 are arranged at an interval (D1) of 1 mm, the first and second vibrating parts 511-1 and 511-2 vibrate as one vibrating device, whereby the reproduction band of the sound can be increased and the sound in the low frequency band, for example, the sound pressure characteristics at 500 Hz or less can be increased. For example, when the first and second vibrating parts 511-1 and 511-2 are arranged at an interval (D1) of 1 mm, the vibration generator 510 can be realized by a vibrating body with an enlarged area due to the optimized separation distance between the first and second vibrating parts 511-1 and 511-2. Thereby, it can be driven as a vibrating body with a large area by the single-body vibration of the first and second vibrating parts 511-1 and 511-2, whereby the reproduction band of the sound generated in conjunction with the large-area vibration of the vibration generator 510 and the acoustic characteristics and sound pressure characteristics in the low frequency band can each be increased or improved.

[0355] Therefore, in order to realize the single-body vibration (or one vibrating device) of the first and second vibrating parts 511-1 and 511-2, the separation distance (D1) between the first and second vibrating parts 511-1 and 511-2 can be set to be 0.1 mm or more and less than 3 cm. Also, in order to realize the single-body vibration (or one vibrating device) of the first and second vibrating parts 511-1 and 511-2 and increase the sound pressure characteristics of the sound in the low frequency band, the separation distance (D1) between the first and second vibrating parts 511-1 and 511-2 can be set to be 0.1 mm or more and less than 5 mm.

[0356] Each of the first and second vibrating parts 511-1 and 511-2 according to an embodiment of the present specification can include a vibrating layer 511a, a first electrode layer 511b, and a second electrode layer 511c.

[0357] Each of the vibration layers 511a of the first and second vibrating parts 511-1 and 511-2 can include a piezoelectric material (or electroactive material) including the piezoelectric effect. For example, since each of the vibration layers 511a of the first and second vibrating parts 511-1 and 511-2 is configured substantially the same as any one of the vibration layers 511a described with reference to FIGS. 26 to 29, the same reference numerals are given thereto, and duplicate descriptions thereof may be omitted.

[0358] According to an embodiment of the present specification, each of the first and second vibrating parts 511-1 and 511-2 can include any one of the vibrating parts 511 described with reference to FIGS. 26 to 29, or can include different vibrating parts 511 from each other.

[0359] The first electrode layer 511b is disposed on the first surface of the vibration layer 511a and can be electrically connected to the first surface of the vibration layer 511a. Since the first electrode layer 511b is substantially the same as the first electrode layer 511b described with reference to FIG. 26, the same reference numeral is given thereto, and duplicate descriptions thereof may be omitted.

[0360] The second electrode layer 511c is disposed on the second surface of the vibration layer 511a and can be electrically connected to the second surface of the vibration layer 511a. Since the second electrode layer 511c is substantially the same as the second electrode layer 511c described with reference to FIG. 26, the same reference numeral is given thereto, and duplicate descriptions thereof may be omitted.

[0361] The vibration generator 510 according to another embodiment of the present specification can further include a first cover member 512 and a second cover member 513.

[0362] The first cover member 512 can be disposed on the first surface of the vibration generator 510. For example, the first cover member 512 covers the first electrode layer 511b disposed on the first surface of each of the first and second vibrating parts 511-1 and 511-2, so as to be commonly connected to the first surface of each of the first and second vibrating parts 511-1 and 511-2, or to commonly support the first surfaces of the first and second vibrating parts 511-1 and 511-2. Thereby, the first cover member 512 can protect the first surface of each of the first and second vibrating parts 511-1 and 511-2 or the first electrode layer 511b.

[0363] The second cover member 513 can be disposed on the second surface of the vibration generator 510. For example, the second cover member 513 covers the second electrode layer 511c disposed on the second surface of each of the first and second vibrating parts 511-1 and 511-2, so as to be commonly connected to the second surface of each of the first and second vibrating parts 511-1 and 511-2, or to commonly support the second surfaces of the first and second vibrating parts 511-1 and 511-2. Thereby, the second cover member 513 can protect the second surface of each of the first and second vibrating parts 511-1 and 511-2 or the second electrode layer 511c.

[0364] Each of the first cover member 512 and the second cover member 513 according to an embodiment of the present specification can include one or more of plastic, fiber, leather, rubber, wood, cloth, and paper, but the embodiments of the present specification are not limited thereto. For example, each of the first cover member 512 and the second cover member 513 can include the same or different materials from each other. For example, each of the first cover member 512 and the second cover member 513 can be a PI (Polyimide) film or a PET (Polyethylene terephthalate) film, but the embodiments of the present specification are not limited thereto.

[0365] The first cover member 512 according to an embodiment of the present specification can be disposed on the first surface of each of the first and second vibrating parts 511-1 and 511-2 via the first adhesive layer 514. For example, the first cover member 512 can be directly disposed on the first surface of each of the first and second vibrating parts 511-1 and 511-2 by a film laminating process mediated by the first adhesive layer 514. Accordingly, each of the first and second vibrating parts 511-1 and 511-2 can be integrated (or disposed) or tiled with the first cover member 512 so as to have a certain interval (D1).

[0366] The second cover member 513 according to an embodiment of the present specification can be disposed on the second surface of each of the first and second vibrating parts 511-1 and 511-2 via the second adhesive layer 515. For example, the second cover member 513 can be directly disposed on the second surface of each of the first and second vibrating parts 511-1 and 511-2 by a film laminating process mediated by the second adhesive layer 515. Accordingly, each of the first and second vibrating parts 511-1 and 511-2 can be integrated (or disposed) or tiled with the second cover member 513 so as to have a certain interval (D1). For example, with the first cover member 512 and the second cover member 513, the vibration generator 510 can be realized with one film.

[0367] The first adhesive layer 514 is disposed between the first and second vibrating parts 511-1 and 511-2 and can be disposed on the first surface of each of the first and second vibrating parts 511-1 and 511-2. For example, the first adhesive layer 514 is formed on the back surface (or inner surface) of the first cover member 512 facing the first surface of each of the first and second vibrating parts 511-1 and 511-2, filled between the first and second vibrating parts 511-1 and 511-2, and can be disposed between the first surface of each of the first and second vibrating parts 511-1 and 511-2 and the first cover member 512.

[0368] The second adhesive layer 515 is disposed between the first and second vibrating parts 511-1 and 511-2, and can be disposed on the second surfaces of the first and second vibrating parts 511-1 and 511-2 respectively. For example, the second adhesive layer 515 is formed on the front surface (or inner surface) of the second cover member 513 facing the second surfaces of the first and second vibrating parts 511-1 and 511-2 respectively, filled between the first and second vibrating parts 511-1 and 511-2, and can be disposed between the second surface of each of the first and second vibrating parts 511-1 and 511-2 and the second cover member 513.

[0369] The first and second adhesive layers 514 and 515 can be interconnected or bonded to each other between the first and second vibrating parts 511-1 and 511-2. Thereby, each of the first and second vibrating parts 511-1 and 511-2 can be surrounded by the first and second adhesive layers 514 and 515. For example, the first and second adhesive layers 514 and 515 can be configured between the first cover member 512 and the second cover member 513 so as to completely surround each of the first and second vibrating parts 511-1 and 511-2. For example, each of the first and second vibrating parts 511-1 and 511-2 can be embedded or built-in between the first adhesive layer 514 and the second adhesive layer 515.

[0370] Each of the first and second adhesive layers 514 and 515 according to an embodiment of the present specification can include an electrically insulating material that is adhesive and can be compressed and restored. For example, each of the first and second adhesive layers 514 and 515 can include an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin, but the embodiments of the present specification are not limited thereto. For example, each of the first and second adhesive layers 514 and 515 can be configured to be transparent, translucent, or opaque.

[0371] The oscillator 510 according to another embodiment of the present specification may further include a first power supply line (PL1) disposed on the first cover member 512, a second power supply line (PL2) disposed on the second cover member 513, and a pad portion 518 electrically connected to the first power supply line (PL1) and the second power supply line (PL2).

[0372] The first power supply line (PL1) may be disposed on the back surface of the first cover member 512 facing the first surfaces of the first and second vibrating portions 511-1 and 511-2, respectively. The first power supply line (PL1) may be connected to or electrically connected to the first electrode layer 511b of each of the first and second vibrating portions 511-1 and 511-2. For example, the first power supply line (PL1) may be electrically connected to the first electrode layer 511b of each of the first and second vibrating portions 511-1 and 511-2 via an anisotropic conductive film or a conductive substance (or particles) contained in the first adhesive layer 514.

[0373] The first power supply line (PL1) according to an embodiment of the present specification may include first and second upper power supply lines (PL11, PL12) disposed along the second direction (Y). For example, the first upper power supply line (PL11) may be connected to or directly electrically connected to the first electrode layer 511b of the first vibrating portion 511-1. The second upper power supply line (PL12) may be connected to or directly electrically connected to the first electrode layer 511b of the second vibrating portion 511-2.

[0374] The second power supply line (PL2) may be disposed on the front surface of the second cover member 513 facing the second surfaces of the first and second vibrating portions 511-1 and 511-2, respectively. The second power supply line (PL2) may be connected to or electrically connected to the second electrode layer 511c of each of the first and second vibrating portions 511-1 and 511-2. For example, the second power supply line (PL2) may be electrically connected to the second electrode layer 511c of each of the first and second vibrating portions 511-1 and 511-2 via an anisotropic conductive film or a conductive substance (or particles) contained in the second adhesive layer 515.

[0375] The second power supply line (PL2) according to an embodiment of the present specification may include first and second lower power supply lines (PL21, PL22) arranged along the second direction (Y). For example, the first lower power supply line (PL21) may be connected to the second electrode layer 511c of the first vibrating unit 511-1 or may be directly electrically connected. For example, the first lower power supply line (PL21) may be arranged so as not to overlap with the first upper power supply line (PL11). When the first lower power supply line (PL21) is arranged so as not to overlap with the first upper power supply line (PL11), the problem of short circuit failure between the first power supply line (PL1) and the second power supply line (PL2) can be improved. The second lower power supply line (PL22) may be connected to the second electrode layer 511c of the second vibrating unit 511-2 or may be directly electrically connected. For example, the second lower power supply line (PL22) may be arranged so as not to overlap with the second upper power supply line (PL12). When the second lower power supply line (PL22) is arranged so as not to overlap with the second upper power supply line (PL12), the problem of short circuit failure between the first power supply line (PL1) and the second power supply line (PL2) can be improved.

[0376] The pad portion 518 may be formed at an edge portion on one side of either the first cover member 512 or the second cover member 513 so as to be electrically connected to one side (or one end) of each of the first power supply line (PL1) and the second power supply line (PL2).

[0377] The pad portion 518 according to an embodiment of the present specification may include a first pad electrode electrically connected to one end of the first power supply line (PL1) and a second pad electrode electrically connected to one end of the second power supply line (PL2).

[0378] The first pad electrode can be commonly connected to one end of each of the first and second upper power supply lines (PL11, PL12) of the first power supply line (PL1). For example, one end of each of the first and second upper power supply lines (PL11, PL12) can be branched from the first pad electrode. The second pad electrode can be commonly connected to one end of each of the first and second lower power supply lines (PL21, PL22) of the second power supply line (PL2). For example, one end of each of the first and second lower power supply lines (PL21, PL22) can be branched from the second pad electrode.

[0379] The oscillator 510 according to another embodiment of the present specification may further include a signal cable 519.

[0380] The signal cable 519 is electrically connected to the pad portion 518 disposed in the oscillator 510, and can supply a vibration drive signal (or an acoustic signal or a voice signal) provided from the acoustic processing circuit to the oscillator 510. The signal cable 519 according to an embodiment of the present specification may include a first terminal electrically connected to the first pad electrode of the pad portion 518 and a second terminal electrically connected to the second pad electrode of the pad portion 518. For example, the signal cable 519 can be composed of 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, but the embodiments of the present specification are not limited thereto.

[0381] The audio processing circuit can generate an alternating vibration drive signal including a first vibration drive signal and a second vibration drive signal based on audio data. The first vibration drive signal can be either a positive polarity (+) vibration drive signal or a negative polarity (-) vibration drive signal, and the second vibration drive signal can be either a positive polarity (+) vibration drive signal or a negative polarity (-) vibration drive signal. For example, the first vibration drive signal can be supplied to the first electrode layers 511b of the first and second vibration units 511-1 and 511-2 via the first terminal of the signal cable 519, the first pad electrode of the pad unit 518, and the first power supply line (PL1). The second vibration drive signal can be supplied to the second electrode layers 511c of the first and second vibration units 511-1 and 511-2 via the second terminal of the signal cable 519, the second pad electrode of the pad unit 518, and the second power supply line (PL2).

[0382] The vibrator 510 according to other embodiments of the present specification can be realized in the form of a thin film or a thin film shape, whereby it can be bent into a shape corresponding to the shape of the vibrating member or the object to be vibrated, and a vibrating member including various curved surfaces can be easily vibrated, and the acoustic characteristics and / or sound pressure characteristics in the low frequency band generated by the vibration of the vibrating member can be improved. Also, the vibrator 510 according to other embodiments of the present specification includes first and second vibration units 511-1 and 511-2 arranged (or tiled) at a certain interval (D1) so as to be realized as a single vibrating body without being independently driven, whereby it can be driven as a large-area vibrating body by the single-body vibration of the first and second vibration generating units 511-1 and 511-2.

[0383] FIG. 32 is a diagram showing a vibrator according to other embodiments of the present specification. FIG. 32 is a configuration in which four vibrating parts are added to the vibrator shown in FIGS. 30 and 31. Therefore, hereinafter, the same drawing reference numerals will be given to the remaining configurations other than the four vibrating parts and the configurations related thereto, and duplicate descriptions thereof can be omitted. The cross-section of the line IV-IV' shown in FIG. 32 is shown in FIG. 31.

[0384] Referring to FIGS. 31 and 32, the oscillator 510 according to another embodiment of the present specification may include a plurality of vibrating parts 511-1, 511-2, 511-3, 511-4.

[0385] Each of the plurality of vibrating parts 511-1, 511-2, 511-3, 511-4 may be electrically separated and arranged while being spaced apart from each other along the first direction (X) and the second direction (Y), respectively. For example, each of the plurality of vibrating parts 511-1, 511-2, 511-3, 511-4 may be arranged or tiled in the form of i×j on the same plane, so that the oscillator 510 may be enlarged in area by tiling the plurality of vibrating parts 511-1, 511-2, 511-3, 511-4 having a relatively small size. For example, i is the number of vibrating parts arranged along the first direction (X) and is a natural number of 2 or more, and j is the number of vibrating parts arranged along the second direction (Y) and may be a natural number of 2 or more that is equal to or different from i. For example, each of the plurality of vibrating parts 511-1, 511-2, 511-3, 511-4 may be arranged or tiled in the form of 2×2, but the embodiments of the present specification are not limited thereto. In the following description, it is assumed that the oscillator 510 includes the first to fourth vibrating parts 511-1, 511-2, 511-3, 511-4 for explanation.

[0386] According to an embodiment of the present specification, the first and second vibrating parts 511-1, 511-2 may be spaced apart from each other along the first direction (X). The third and fourth vibrating parts 511-3, 511-4 may be spaced apart from each of the first and second vibrating parts 511-1, 511-2 along the second direction (Y) while being spaced apart from each other along the first direction (X). The first and third vibrating parts 511-1, 511-3 may face each other and be spaced apart from each other along the second direction (Y). The second and fourth vibrating parts 511-2, 511-4 may face each other and be spaced apart from each other along the second direction (Y).

[0387] The first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 can be arranged between the first cover member 512 and the second cover member 513. For example, each of the first cover member 512 and the second cover member 513 can play a role of driving the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 as one vibrating device (or a single vibrating device) by connecting or commonly supporting the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4. For example, the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 can be driven as one vibrating device (or a single vibrating device) by tiling the cover members 512 and 513 at regular intervals.

[0388] According to an embodiment of the present specification, as described with reference to FIGS. 30 and 31, the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 can be arranged (or tiled) at intervals of 0.1 mm or more and less than 3 cm along each of the first direction (X) and the second direction (Y) in order to realize complete single-body vibration or large-area vibration, and can be arranged (or tiled) at intervals of 0.1 mm or more and less than 5 mm.

[0389] Each of the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 can include a vibrating layer 511a, a first electrode layer 51b, and a second electrode layer 511c.

[0390] Each vibrating layer 511a of the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 can include a piezoelectric substance (or electroactive substance) including a piezoelectric effect. Since each vibrating layer 511a of the first to fourth vibrating parts 511-1, 511-2, 511-3, and 511-4 is substantially configured in the same manner as any of the vibrating layers 511a described with reference to FIGS. 26 to 29, the same drawing reference numerals are given thereto, and duplicate descriptions thereof can be omitted.

[0391] According to one embodiment of the present specification, each of the first to fourth vibrating portions 511-1, 511-2, 511-3, and 511-4 may include any one of the vibrating layers 511a described with reference to FIGS. 26 to 29, or may include different vibrating layers 511a. According to another embodiment of the present specification, one or more of the first to fourth vibrating portions 511-1, 511-2, 511-3, and 511-4 may include different vibrating layers 511a among the vibrating layers 511a described with reference to FIGS. 26 to 29.

[0392] The first electrode layer 511b is disposed on the first surface of the corresponding vibrating layer 511a and may be electrically connected to the first surface of the vibrating layer 511a. Since the first electrode layer 511b is substantially the same as the first electrode layer 511b described with reference to FIG. 26, the same drawing reference numeral is given thereto, and redundant description thereof may be omitted.

[0393] The second electrode layer 511c is disposed on the second surface of the vibrating layer 511a and may be electrically connected to the second surface of the vibrating layer 511a. Since the second electrode layer 511c is substantially the same as the second electrode layer 511c described with reference to FIG. 26, the same drawing reference numeral is given thereto, and redundant description thereof may be omitted.

[0394] According to one embodiment of the present specification, the first and second adhesive layers 514 and 515 may be connected or joined to each other between the first to fourth vibrating portions 511-1, 511-2, 511-3, and 511-4. Thereby, each of the first to fourth vibrating portions 511-1, 511-2, 511-3, and 511-4 may be surrounded by the first and second adhesive layers 514 and 515. For example, the first and second adhesive layers 514 and 515 may be configured between the first cover member 512 and the second cover member 513 so as to completely surround each of the first to fourth vibrating portions 511-1, 511-2, 511-3, and 511-4. For example, each of the first to fourth vibrating portions 511-1, 511-2, 511-3, and 511-4 may be embedded or incorporated between the first adhesive layer 514 and the second adhesive layer 515.

[0395] The oscillator 510 according to another embodiment of the present specification may further include a first power supply line (PL1), a second power supply line (PL2), and a pad portion 518.

[0396] Since each of the first power supply line (PL1) and the second power supply line (PL2) is substantially the same as each of the first power supply line (PL1) and the second power supply line (PL2) described with reference to FIGS. 30 and 31 except for the electrical connection structure with the first to fourth vibration units 511-1, 511-2, 511-3, 511-4, in the following description, only the electrical connection structure between each of the first power supply line (PL1) and the second power supply line (PL2) and the first to fourth vibration units 511-1, 511-2, 511-3, 511-4 will be briefly described.

[0397] The first power supply line (PL1) according to an embodiment of the present specification may include first and second upper power supply lines (PL11, PL12) arranged along the second direction (Y). For example, the first upper power supply line (PL11) may be electrically connected to the first electrode layers 511b of the first and third vibration generating units 511-1 and 511-3 arranged in the first row parallel to the second direction (Y) among the first to fourth vibration units 511-1, 511-2, 511-3, 511-4. The second upper power supply line (PL12) may be electrically connected to the first electrode layers 511b of the second and fourth vibration units 511-2 and 511-4 arranged in the second row parallel to the second direction (Y) among the first to fourth vibration units 511-1, 511-2, 511-3, 511-4.

[0398] The second power supply line (PL2) according to an embodiment of the present specification may include first and second lower power supply lines (PL21, PL22) arranged along the second direction (Y). For example, the first lower power supply line (PL21) may be electrically connected to the second electrode layers 511c of the first and third vibration generating units 511-1 and 511-3 arranged in the first row parallel to the second direction (Y) among the first to fourth vibration units 511-1, 511-2, 511-3, and 511-4. The second lower power supply line (PL12) may be electrically connected to the second electrode layers 511c of the second and fourth vibration units 511-2 and 511-4 arranged in the second row parallel to the second direction (Y) among the first to fourth vibration units 511-1, 511-2, 511-3, and 511-4.

[0399] The pad portion 518 may be formed at one side edge portion of either the first cover member 512 or the second cover member 513 so as to be electrically connected to one side (or one end) of each of the first power supply line (PL1) and the second power supply line (PL2). Since the pad portion 518 is substantially the same as the pad portion 518 described with reference to FIGS. 30 and 31, the same drawing reference numerals are given thereto, and overlapping descriptions thereof may be omitted.

[0400] The oscillator 510 according to another embodiment of the present specification has the same effects as the oscillator 510 described with reference to FIGS. 30 and 31, and thus overlapping descriptions thereof may be omitted.

[0401] FIG. 33 is a diagram showing an oscillator according to another embodiment of the present specification, and FIG. 34 is a cross-sectional view taken along line V-V' shown in FIG. 33. FIGS. 33 and 34 are diagrams showing another embodiment of the oscillator described with reference to FIGS. 1 to 23C.

[0402] Referring to FIGS. 33 and 34, the oscillator 510 according to other embodiments of the present specification may include a plurality of oscillators 510A, 510B, and an intermediate member 510m. For example, the oscillator 510 according to other embodiments of the present specification may include a first oscillation generating unit 510A, a second oscillation generating unit 510B, and an intermediate member 510m between the first oscillation generating unit 510A and the second oscillation generating unit 510B.

[0403] The plurality of oscillators (or the first and second oscillation generating units) 510A, 510B may be overlapped or laminated with each other so as to be displaced (or driven or vibrated) in the same direction as each other in order to maximize the amplitude displacement of the oscillator 510 and / or the amplitude displacement of the vibrating member. One side (or end portion, or tip, or outer surface, or each corner portion) of each of the plurality of oscillators (or the first and second oscillation generating units) 510A, 510B may be aligned along the third direction (Z) or located on a virtual extension line (VL). For example, the first oscillation generating unit 510A may be disposed in front of or behind the second oscillation generating unit 510B.

[0404] Since each of the plurality of oscillators (or the first and second oscillation generating units) 510A, 510B is any one of the oscillators 510 described with reference to FIGS. 24 to 32, overlapping descriptions thereof may be omitted.

[0405] The plurality of oscillation generating units 510A, 510B may be overlapped or laminated with each other so as to be displaced (or driven or vibrated) in the same direction as each other based on the polarization direction of the oscillation layer 511a. For example, when the oscillation layers 511a of the first and second oscillation generating units 510A, 510B have the same polarization direction, the second oscillator 510B may be disposed in front of or behind the first oscillator 510A. For example, when the oscillation layers 511a of the first and second oscillation generating units 510A, 510B have opposite polarization directions to each other, the second oscillator 510B may be disposed in front of or behind the first oscillator 510A in an upside-down shape.

[0406] The intermediate member 510m can be disposed or interposed between a plurality of vibration generating portions 510A and 510B. For example, the intermediate member 510m can be disposed between the second cover member 513 of the first vibration generator 510A and the first cover member 512 of the second vibration generator 510B. For example, the intermediate member 510m can be made of an adhesive material including an adhesive layer having excellent adhesion or adhesive force with respect to each of the first vibration generating portion 510A and the second vibration generating portion 510B that overlap vertically.

[0407] The intermediate member 510m according to an embodiment of the present specification can include a foam pad, a double-sided foam pad, a double-sided tape, or an adhesive, etc., and the embodiments of the present specification are not limited thereto. For example, the adhesive layer of the intermediate member 510m can include epoxy, acrylic, silicone, or urethane-based, and the embodiments of the present specification are not limited thereto. For example, the adhesive layer of the intermediate member 510m can include a urethane-based substance (or material) having relatively softer characteristics than acrylic among acrylic and urethane. Thereby, in the vibration generator 510 according to another embodiment of the present specification, vibration loss due to displacement interference between the plurality of vibration generating portions 510A and 510B is minimized, or each of the plurality of vibration generating portions 510A and 510B can be freely displaced.

[0408] The intermediate member 510m according to another embodiment of the present specification can include one or more of a thermosetting adhesive, a photocurable adhesive, and a heat-sealing adhesive. For example, the intermediate member 510m can include a heat-sealing adhesive. The heat-sealing adhesive can be a heat-active type or a thermosetting type. For example, the intermediate member 510m including a heat-sealing adhesive can bond or join two adjacent vibration generators 510A and 510B to each other by heat and pressure. For example, the intermediate member 510m including a heat-sealing adhesive can minimize or reduce the loss of vibration of the vibration generator 510.

[0409] The plurality of vibration generators 510A and 510B can be integrated into one structure (or component) by a lamination process using an intermediate member 510m. For example, the plurality of vibration generators 510A and 510B can be integrated into one structure by a lamination process using rollers.

[0410] Figs. 35A to 35D are perspective views showing the laminated structure between the respective vibration layers of the plurality of vibration generating portions shown in Figs. 33 and 34.

[0411] Referring to Figs. 33 and 35A, each vibration layer 511a of the plurality of vibration generating portions 510A and 510B can include a plurality of first portions 511a1 and a plurality of second portions 511a2 disposed between the plurality of first portions 511a1. Since such a vibration layer 511a is substantially the same as the vibration layer 511a described with reference to Fig. 26, overlapping explanations thereof can be omitted.

[0412] Of the plurality of vibration generating units 510A and 510B, the first portion 511a1 of the vibration generating unit 510B disposed in the lower layer and the first portion 511a1 of the vibration generating unit 510A disposed in the upper layer can substantially overlap each other without crossing, or can be superimposed, or can be aligned on a virtual extension line (VL) extending along the third direction (Z), or can be disposed on the virtual extension line (VL). Of the plurality of vibration generating units 510A and 510B, the second portion 511a2 of the vibration generating unit 510B disposed in the lower layer and the second portion 511a2 of the vibration generating unit 510A disposed in the upper layer can substantially overlap each other without crossing, or can be superimposed, or can be aligned on a virtual extension line (VL) extending along the third direction (Z), or can be disposed on the virtual extension line (VL). Thereby, the respective first portions 511a1 of the plurality of vibration generating units 510A and 510B substantially overlap each other without crossing, or are superimposed, and are displaced (or driven or vibrated) in the same direction with respect to each other, so that the amplitude displacement of the vibration generator 510 and / or the amplitude displacement of the vibrating member can be increased or maximized by the combined vibration of the plurality of vibration generating units 510A and 510B, and thereby the acoustic characteristics and / or the sound pressure characteristics in the low frequency band generated by the vibration of the vibrating member can be improved.

[0413] Referring to FIGS. 33, 35B to 35D, each vibration layer 511a of the plurality of vibration generating units 510A and 510B can include a plurality of first portions 511a1 and a second portion 511a2 disposed so as to surround each of the plurality of first portions 511a1. Since such a vibration layer 511a is substantially the same as the vibration layer 511a described with reference to FIGS. 27 to 29, a redundant description thereof can be omitted.

[0414] Of the plurality of vibration generating units 510A and 510B, the first portion 511a1 of the vibration generating unit 510B disposed in the lower layer and the first portion 511a1 of the vibration generating unit 510A disposed in the upper layer can be substantially overlapped with each other without crossing, or can be superimposed, or can be aligned on a virtual extension line (VL) extending along the third direction (Z), or can be disposed on the virtual extension line (VL). Of the plurality of vibration generating units 510A and 510B, the second portion 511a2 of the vibration generating unit 510B disposed in the lower layer and the second portion 511a2 of the vibration generating unit 510A disposed in the upper layer can be substantially overlapped with each other without crossing, or can be superimposed, or can be aligned on a virtual extension line (VL) extending along the third direction (Z), or can be disposed on the virtual extension line (VL). Thereby, the first portions 511a1 of the plurality of vibration generating units 510A and 510B are substantially overlapped with each other without crossing, or are superimposed, and are displaced (or driven or vibrated) in the same direction, so that the amplitude displacement of the vibration generator 510 and / or the amplitude displacement of the vibrating member can be increased or maximized by the combined vibration of the plurality of vibration generating units 510A and 510B, thereby improving the acoustic characteristics and / or sound pressure characteristics in the low frequency band generated by the vibration of the vibrating member.

[0415] FIG. 36 is a perspective view showing an apparatus according to another embodiment of the present specification. FIG. 37 is a cross-sectional view taken along line VI-VI 'shown in FIG. 36. FIG. 38 is a perspective view showing the back surface of the support member shown in FIGS. 36 and 37.

[0416] Referring to FIGS. 36 to 38, the apparatus 5 according to the fifth embodiment of the present specification can be applied to realize an acoustic device, an acoustic output device, a sound bar, an acoustic system, an acoustic device for a transportation device, an acoustic output device for a transportation device, or a sound bar for a transportation device, etc. For example, the transportation device can include one or more seats and one or more glass windows. For example, the transportation device can include a vehicle, a train, a ship, or an aircraft, and the embodiments of the present specification are not limited thereto. Further, the apparatus 5 according to the fifth embodiment of the present specification can realize analog signage or digital signage such as an advertising signboard, a poster, or a guide board.

[0417] The apparatus 5 according to the fifth embodiment of the present specification can include a vibration member 600, a support member 700, and a vibration device 500.

[0418] The vibration member 600 can output sound by the vibration of the vibration device 500. Thereby, the vibration member 600 can be a passive vibration member, a front member, a front panel, an object to be vibrated, a diaphragm, a vibration panel, an acoustic panel, an acoustic output member, an acoustic panel, or an acoustic output panel, but the embodiments of the present specification are not limited thereto.

[0419] The vibration member 600 can be configured to be transparent, translucent, or opaque. The vibration member 600 according to an embodiment of the present specification can include a metal material having material characteristics suitable for outputting sound by vibration, or a non-metal material (or a composite non-metal material). The metal material of the vibration member 600 according to an embodiment of the present specification can include any one or more of stainless steel, aluminum (Al), aluminum alloy, magnesium (Mg), magnesium alloy, and magnesium-lithium (Mg-Li) alloy, but the embodiments of the present specification are not limited thereto. The non-metal material (or composite non-metal material) of the vibration member 600 can include any one or more of glass, plastic, fiber, leather, wood, cloth, rubber, and paper, but the embodiments of the present specification are not limited thereto.

[0420] The vibration member 600 according to an embodiment of this specification can realize an analog signage panel such as an advertising billboard, a poster, a guide plate, etc. For example, when the vibration member 600 realizes a signage panel, the analog signage can include signage contents such as texts, pictures, and symbols. The signage contents can be arranged on the vibration member 600 so as to be visible. For example, the signage contents can be directly attached to one or more of the first surface (or front surface) 600a of the vibration member 600 and the second surface (or back surface) 600b that is different from (or opposite to) the first surface 600a. For example, the signage contents can be printed on a medium such as paper, and the medium on which the signage contents are printed can be directly attached to one or more of the first surface 600a and the second surface 600b of the vibration member 600. For example, when the signage contents are attached to the second surface 600b of the vibration member 600, the vibration member 600 can be made of a transparent material.

[0421] The vibration member 600 according to an embodiment of this specification can have a rectangular shape. For example, the vibration member 600 can include a plate structure having a rectangular shape. The vibration member 600 can include a horizontal length parallel to the first direction (X) and a vertical length parallel to the second direction (Y). For example, the vibration member 600 can include a rectangular shape in which the horizontal length is relatively longer than the vertical length, but the embodiments of this specification are not limited thereto. For example, the vibration member 600 can also include a square shape in which the horizontal length and the vertical length are equal.

[0422] The support member 700 can be disposed on the back surface of the vibration member 600. The support member 700 can be realized so as to cover the back surface of the vibration member 600. The support member 700 can include a back surface portion 710, side surface portions 730, and curved surface portions 750. The support member 700 can include a back surface portion 710 that covers the back surface of the vibration member 600, side surface portions 730 that are connected to the back surface portion 710 to support the vibration member 600, and one or more curved surface portions 750 embodied on the back surface portion 710. Since each of the back surface portion 710 and the side surface portions 730 and the curved surface portions 750 is substantially the same as or substantially similar to each of the back surface portion 310 and the side surface portions 330 and the curved surface portions 350 of the support member 300 described with reference to FIGS. 2 and 3, the description (or description content) of the support member 300 shown in FIGS. 2 to 11B can be included in the description of the support member 700 shown in FIGS. 36 to 38, and duplicate descriptions thereof are omitted or simplified.

[0423] The side surface portion 730 of the support member 700 can be connected to or joined to the edge portion of the back surface of the vibration member 600 via the coupling member 601.

[0424] The coupling member 601 can be configured to minimize or prevent the vibration of the vibration member 600 from being transmitted to the support member 700. The coupling member 601 can include material properties suitable for blocking vibration. For example, the coupling member 601 can include a material having elasticity for vibration absorption (or shock absorption). The coupling member 601 according to an embodiment of the present specification can be made of a polyurethane material or a polyolefin material, but the embodiments of the present specification are not limited thereto. For example, the coupling member 601 can include one or more of an adhesive, a double-sided tape, a double-sided foam tape, and a double-sided cushion tape, but the embodiments of the present specification are not limited thereto.

[0425] The coupling member 601 can prevent physical contact (or friction) between the vibrating member 600 and the side surface portion 730 of the support member 700, thereby preventing the generation of noise (or noise) due to physical contact (or friction) between the vibrating member 600 and the support member 700. For example, the coupling member 601 can be a buffer member, an elastic member, a damping member, a vibration absorbing member, or a vibration blocking member, but the embodiments of this specification are not limited thereto.

[0426] The curved surface portion 750 of the support member 700 can include a plurality of curved surface portions 750. The curved surface portion 750 can be realized on the back surface portion 710 so as to have a preset interval along one or more directions among the first direction (X) and the second direction (Y).

[0427] Each of the plurality of curved surface portions 750 can vibrate the vibrating member 600 by vibrating together with the vibration of the vibration device 500. For example, each of the plurality of curved surface portions 750 can indirectly vibrate the vibrating member 600 by vibrating due to the vibration of the vibration device 500. Since each of such plurality of curved surface portions 750 is substantially the same as or substantially similar to the curved surface portion 350 described with reference to FIGS. 2 to 11B, the description (or description content) of the curved surface portion 350 shown in FIGS. 2 to 11B can be included in or applied (or realized) to the description of the curved surface portion 750 shown in FIGS. 36 to 38, and the overlapping description thereof is omitted or simplified.

[0428] According to an embodiment of the present specification, each of the plurality of curved surface portions 750 can be realized on the back surface portion 710 so as to include a preset curvature. For example, each of the plurality of curved surface portions 750 can include a curved surface structure protruding in the direction from the back surface portion 710 to the back surface of the support member 700. For example, each of the plurality of curved surface portions 750 can protrude from the back surface portion 710 so as to have a curved surface shape having one curvature (or a single curvature). For example, each of the plurality of curved surface portions 750 can have a curved surface structure having one curvature (or a single curvature) without an inflection point. For example, each of the plurality of curved surface portions 750 can protrude convexly in the direction from the back surface portion 710 to the back surface of the support member 600. For example, the plurality of curved surface portions 750 can have a single convex curved surface shape having a constant curvature.

[0429] According to another embodiment of the present specification, one or more of the plurality of curved surface portions 750 can have different sizes. For example, any one of the plurality of curved surface portions 750 can have a smaller size than the remaining curved surface portions 750, like the third curved surface portion 350c described with reference to FIG. 11B.

[0430] The device 5 according to the fifth embodiment of the present specification can further include a gap space (GS) provided between the curved surface portion 750 of the support member 700 and the vibration member 600.

[0431] The gap space (GS) can be provided between the curved surface portion 750 of the support member 700 and the back surface of the vibration member 600. The gap space (GS) can include a space in which sound or sound pressure is generated by the vibration of the curved surface portion 750, a space for smoothing the vibration of the curved surface portion 750, or a space in which sound waves generated by the vibration of the vibration device 500 are propagated to the vibration member 600. For example, the gap space (GS) can be an air gap, a sound pressure generation space, an acoustic space, a sound pressure space, a resonance portion, a resonance box, a sound wave propagation path, an acoustic energy incident portion, or an acoustic path, and the embodiments of the present specification are not limited thereto.

[0432] The vibration device 500 can be coupled to or attached to each of a plurality of curved surface portions 750 implemented on the support member 700. By vibrating each of the plurality of curved surface portions 750, the vibration device 500 can output sound (or sound waves) into the gap space (GS), whereby the vibration member 600 can vibrate by the sound (or sound waves) transmitted through the gap space (GS) to generate or output sound.

[0433] The vibration device 500 according to an embodiment of the present specification can be separately coupled to or attached to each of the plurality of curved surface portions 750.

[0434] The vibration device 500 can have a size smaller than that of the curved surface portion 750 of the support member 700. The vibration device 500 can be coupled to or attached to the curved surface portion 750 so as to have an isogonal shape that follows the curvature of the curved surface portion 750 as it is, but the embodiments of the present specification are not limited thereto. For example, the vibration device 500 can have a non-isogonal shape that does not follow the curvature of the curved surface portion 750 as it is, or can be coupled to or attached to the curved surface portion 750 so as to have a curvature different from that of the curved surface portion 750.

[0435] According to an embodiment of the present specification, the vibration device 500 can have or receive prestress by the curved surface portion 750 by being coupled to or attached to the curved surface portion 750 of the support member 700. For example, the vibration device 500 can be maintained in a state of having or receiving prestress by the curved surface portion 750 by being coupled to or attached to the curved surface portion 750. For example, the vibration device 500 can receive or include tensile stress due to the curvature of the curved surface portion 750. For example, the curved surface portion 750 can be realized to apply only tensile stress to the vibration device 500 in order to improve the vibration characteristics of the vibration device 500. Therefore, since the vibration device 500 can receive prestress (or pre-tensile stress) or vibrate in a state bent into a curved surface shape, it can include effects such as an increase in the second moment of area or unification of the vibration direction.

[0436] The vibration device 500 can include the vibration device described with reference to FIGS. 6 to 9 and the vibration generator described with reference to FIGS. 24 to 35D. Therefore, the description of the vibration device 500 shown in FIGS. 6 to 9 and the description of the vibration generator 510 shown in FIGS. 24 to 35D can be included in or applied (or realized) to the description of each of the plurality of vibration devices 500 shown in FIG. 37, so the overlapping descriptions thereof can be omitted.

[0437] The vibration devices 500 arranged in each of the plurality of curved surface portions 750 can be configured to generate sounds in the same sound range band as each other or can be configured to generate sounds in different sound range bands from each other. For example, the device 5 according to the fifth embodiment of the present specification includes a plurality of vibration devices 500 arranged in each of the plurality of curved surface portions 750, and each of the plurality of vibration devices 500 can be configured to generate sounds in the same sound range band as each other or can be configured to generate sounds in different sound range bands from each other.

[0438] One or more of the plurality of vibration devices 500 can be configured to generate sounds in different sound range bands or in a low sound range band. Thereby, the device 5 according to the fifth embodiment of the present specification can output sounds such as stereo sounds or stereophonic sounds by the region-specific vibration of the vibration member 600 caused by the vibration of each of the plurality of vibration devices 500 or by the sounds output, and can have multi-channel sound output characteristics.

[0439] The apparatus 5 according to the fifth embodiment of the present specification includes a vibration device 500 that is subjected to prestress (or pre-tensile stress) or vibrates in a curved surface shape, so that the second moment of inertia of the cross-section of the vibration device 500 increases, or the vibration direction of the vibration device 500 is unified in one direction. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibrating member 100 vibrating due to the vibration of the vibration device 500 can be improved. The apparatus 5 according to the fifth embodiment of the present specification can output sound having improved acoustic characteristics and / or sound pressure characteristics, such as stereo sound or stereophonic sound, by vibrating the vibrating member 600 by the vibration of each of the plurality of vibration devices 500, and can have multi-channel acoustic output characteristics.

[0440] FIG. 39 is another cross-sectional view taken along line VI-VI' shown in FIG. 36. FIG. 39 further configures an enclosure for the apparatus 5 shown in FIGS. 36 to 38. Therefore, in the description of FIG. 39, the same drawing reference numerals are given to the remaining configurations except for the enclosure and the related configurations, and the overlapping descriptions thereof can be omitted.

[0441] Referring to FIG. 39, the apparatus 5 according to the fifth embodiment of the present specification may further include an enclosure 950.

[0442] The enclosure 950 can be disposed on the back surface of the support member 700. For example, the enclosure 950 can be connected or coupled to the back surface of the support member 700 so as to cover the vibration device 500. For example, the enclosure 950 can be connected or coupled to the back surface of the back surface portion 710 of the support member 700 via the coupling member 951. The enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the support member 700. For example, the enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the back surface portion 710 of the support member 700. For example, the enclosure 950 can be a sealing member, a sealing cap, a sealing box, or a sound box, but the embodiments of this specification are not limited thereto. The sealed space can be an air gap, a vibration space, an acoustic space, or a resonance box, but the embodiments of this specification are not limited thereto.

[0443] The enclosure 950 can include one or more materials of a metallic material or a non-metallic material (or a composite non-metallic material). For example, the enclosure 950 can include one or more of metal, plastic, and wood, but the embodiments of this specification are not limited thereto.

[0444] The enclosure 950 according to an embodiment of the present specification can keep constant the impedance component due to air acting on the curved surface portion 750 of the support member 700 when the curved surface portion 750 of the support member 700 or the vibration device 500 vibrates. For example, the air around the support member 700 comes to resist the vibration of the curved surface portion 750 of the support member 700 and acts as an impedance component having resistance and reactance components different depending on the frequency. Thereby, the enclosure 950 can keep constant the impedance component (or air impedance or elastic impedance) acting on the curved surface portion 750 of the support member 700 by air by forming a sealed space surrounding the vibration device 500 on the back surface of the support member 700. Thereby, the enclosure 950 can improve the acoustic characteristics and / or sound pressure characteristics in the low frequency range band and improve the sound quality of the sound in the high frequency range band.

[0445] In the apparatus 5 according to the fifth embodiment of the present specification, the acoustic characteristics and / or sound pressure characteristics in the low frequency range band can be improved by the enclosure 950, and the sound quality of the sound in the high frequency range band can be improved.

[0446] FIG. 40 is another cross-sectional view taken along line VI-VI' shown in FIG. 36. FIG. 41 is a perspective view showing the back surface of the support member shown in FIG. 40. FIGS. 40 and 41 are the apparatus 5 described with reference to FIGS. 36 to 39, in which holes are further formed in the curved surface portion of the support member. Therefore, in the description of FIGS. 40 and 41, the same reference numerals are given to the remaining configurations except for the holes and the related configurations, and the overlapping description thereof may be omitted.

[0447] Referring to FIGS. 40 and 41, in the apparatus 6 according to the sixth embodiment of the present specification, the support member 700 can further include one or more holes 760 formed in one or more of the plurality of curved surface portions 750.

[0448] One or more holes 760 may be formed in one or more of the plurality of curved surface portions 750, or may be formed in each of the plurality of curved surface portions 750. For example, one or more holes 760 may be formed to penetrate the curved surface portion 750 along the third direction (Z). Thereby, the hole 760 can be an opening, a communication portion, an opening hole, a communication hole, a through portion, a through opening, a through hole, a support hole, a slit, a slot, or an acoustic passage portion, and the embodiments of the present specification are not limited thereto. Since one or more holes 760 are substantially the same as the holes 360 described with reference to FIGS. 12 and 13, duplicate descriptions thereof are omitted, and the descriptions of the holes 360 shown in FIGS. 12 and 13 may be included in or applied (or realized) to the descriptions of the holes 760 shown in FIGS. 40 and 41.

[0449] According to an embodiment of the present specification, one or more holes 760 can include a circular shape, an elliptical shape, a square shape, a slit shape, a slot shape, a dotted line shape, etc., but the embodiments of the present specification are not limited thereto.

[0450] The device 6 according to the sixth embodiment of the present specification is subjected to pre-stress (or pre-tensile stress) or vibrates in a curved surface shape, so that the second moment of area of the vibration device 500 increases or the vibration direction of the vibration device 500 is unified in one direction. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibration member 600 vibrating due to the vibration of the vibration device 500 can be improved. And the device 6 according to the sixth embodiment of the present specification includes the holes 760 formed in the curved surface portion 750 of the support member 700, so that the sound (or sound wave) generated by the vibration of the vibration device 500 can be directly transmitted to the vibration member 600. Thereby, the vibration transmission efficiency can be increased, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 600 can be further improved.

[0451] The device 6 according to the sixth embodiment of the present specification may further include an enclosure 950. The enclosure 950 may be disposed on the back surface of the support member 700. For example, the enclosure 950 may be connected or coupled to the back surface of the support member 700 so as to cover the vibration device 500. For example, the enclosure 950 may be connected or coupled to the back surface of the back surface portion 710 of the support member 700 via a coupling member 951. The enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the back surface portion 710 of the support member 700. Since the enclosure 950 is the same as or substantially the same as that described with reference to FIG. 39, duplicate descriptions thereof may be omitted.

[0452] FIG. 42 is another cross-sectional view taken along line VI-VI' shown in FIG. 36. FIG. 43 is a perspective view showing the back surface of the support member shown in FIG. 42. FIGS. 42 and 43 show a modification of the curved surface portion of the support member in the device 5 described with reference to FIGS. 36 to 39. Therefore, in the description of FIGS. 42 and 43, the same reference numerals are given to the remaining configurations except for the curved surface portion and the related configurations, and duplicate descriptions thereof may be omitted.

[0453] Referring to FIGS. 42 and 43, the support member 700 of the device 7 according to the seventh embodiment of the present specification may include a plurality of curved surface portions 750. The plurality of curved surface portions 750 may be realized on the back surface portion 710 so as to have a preset interval along one or more directions among the first direction (X) and the second direction (Y).

[0454] Each of the plurality of curved surface portions 750 can vibrate the vibration member 600 by vibrating together with the vibration of the vibration device 500. Each of the plurality of curved surface portions 750 can be realized in a shape that can apply only tensile stress to the vibration device 500 in order to improve the vibration characteristics of the vibration device 500.

[0455] According to an embodiment of the present specification, each of the plurality of curved surface portions 750 can be realized on the back surface portion 710 so as to include a preset curvature. For example, each of the plurality of curved surface portions 750 can include a curved surface structure protruding in the direction from the back surface portion 710 toward the back surface of the vibrating member 600. For example, each of the plurality of curved surface portions 750 can protrude in the direction from the back surface portion 710 toward the back surface of the vibrating member 600 so as to have a curved surface shape having one curvature (or a single curvature). For example, each of the plurality of curved surface portions 750 can have a curved surface structure having one curvature (or a single curvature) without an inflection point. For example, each of the plurality of curved surface portions 750 can protrude convexly in the direction from the back surface portion 710 toward the back surface of the vibrating member 600. For example, the plurality of curved surface portions 750 can have a single convex curved surface shape having a constant curvature.

[0456] According to one or more embodiments of the present specification, each of the plurality of curved surface portions 750 can be the same as the curved surface portion 750 shown in FIGS. 37 and 38, except that each is configured to be convex in the direction of the back surface of the vibrating member 600. For example, each of the plurality of curved surface portions 750 can have a structure that is exactly opposite to each of the plurality of curved surface portions 750 shown in FIG. 37 with respect to the bottom surface 710a of the back surface portion 710 of the support member 700. For example, the plurality of curved surface portions 750 can be a second-shaped curved surface portion, a convex portion, a convex protruding portion, a convex curved surface portion, a convex arch portion, a protruding portion, or a raised portion with respect to the bottom surface 710a of the back surface portion 710 facing the vibrating member 600, but the embodiments of the present specification are not limited thereto.

[0457] According to another embodiment of the present specification, one or more of the plurality of curved surface portions 750 can have different sizes. For example, any one of the plurality of curved surface portions 750 can have a size smaller than the remaining curved surface portions 750, like the third curved surface portion 350c described with reference to FIG. 11B.

[0458] The vibration device 500 can be coupled to or attached to each of a plurality of curved surface portions 750 formed on the support member 700. The vibration device 500 can be coupled to or attached to the curved surface portion 750 between the vibration member 600 and the curved surface portion 750, and can face or directly face the back surface of the vibration member 600. The vibration device 500 can generate an acoustic or sound wave by receiving a pre-stress (or pre-tensile stress) by the curved surface portion 750 or vibrating in a curved state. The acoustic (or sound wave) generated by the vibration of the vibration device 500 can be directly transmitted to the vibration member 600 through the gap space (GS), whereby the vibration of the vibration device 500 can be efficiently transmitted to the vibration member 600, so that the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 100 can be improved.

[0459] The vibration device 500 according to an embodiment of the present specification can be separately coupled to or attached to each of a plurality of curved surface portions 750.

[0460] The vibration device 500 can be coupled to or attached to the curved surface portion 750 between the vibration member 600 and the curved surface portion 750, and can face or directly face the back surface of the vibration member 600. For example, the vibration device 500 can be coupled to or attached to the inner surface (or internal curved surface) of the curved surface portion 750 within the gap space (GS). For example, the vibration device 500 can be coupled to or attached to the inner surface (or internal surface) of the curved surface portion 750 that faces or directly faces the back surface of the vibration member 600.

[0461] According to an embodiment of the present specification, the vibration device 500 can have or receive prestress by being coupled to or attached to the curved surface portion 750. For example, the vibration device 500 can be maintained in a state of having or receiving prestress by the curved surface portion 750 by being coupled to or attached to the curved surface portion 750. For example, the vibration device 500 can receive or include tensile stress due to the curvature of the curved surface portion 750. Therefore, since the vibration device 500 can receive prestress (or pre-tensile stress) or vibrate in a state of being bent into a curved surface shape, it can include effects such as an increase in the second moment of area and the unification of the vibration direction.

[0462] The device 7 according to the seventh embodiment of the present specification includes a vibration device 500 (or a vibration generator) that receives prestress (or pre-tensile stress) or vibrates in a state of being bent into a curved surface shape, so that the second moment of area of the vibration device 500 increases or the vibration direction of the vibration device 500 is unified in one direction. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibration member 600 that vibrates due to the vibration of the vibration device 500 can be improved. And the device 7 according to the seventh embodiment of the present specification can be slimmed down by arranging the vibration device 500 in the gap space (GS) between the vibration member 600 and the support member 700. In the embodiment, since the vibration device 500 is not exposed to the outside, the aesthetic sense of the design on the back of the outermost contour can be improved.

[0463] The apparatus 7 according to the seventh embodiment of the present specification may further include an enclosure 950. The enclosure 950 may be disposed on the back surface of the support member 700. For example, the enclosure 950 may be connected or coupled to the back surface of the support member 700 so as to cover the vibration device 500. For example, the enclosure 950 may be connected or coupled to the back surface of the back surface portion 710 of the support member 700 via a coupling member 951. The enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the back surface portion 710 of the support member 700. Since the enclosure 950 is the same as or substantially the same as that described with reference to FIG. 39, duplicate descriptions thereof may be omitted.

[0464] FIG. 44 is another cross-sectional view taken along line VI-VI' shown in FIG. 36. FIG. 45 is a perspective view showing the back surface of the support member shown in FIG. 44. FIGS. 44 and 45 show the apparatus 7 described with reference to FIGS. 42 to 43, in which holes are further formed in the curved surface portion of the support member. Therefore, in the descriptions of FIGS. 44 and 45, the same reference numerals are given to the remaining configurations except for the holes and the related configurations, and duplicate descriptions thereof may be omitted.

[0465] Referring to FIGS. 44 and 45, in the apparatus 8 according to the eighth embodiment of the present specification, the support member 700 may further include one or more holes 760.

[0466] One or more holes 760 may be formed in one or more of the plurality of curved surface portions 750, or may be formed in each of the plurality of curved surface portions 750. For example, one or more holes 760 may be formed to penetrate the curved surface portion 750 along the third direction (Z). Thereby, the hole 760 can be an opening, a communication portion, an opening hole, a communication hole, a through portion, a through opening, a through hole, a support hole, a slit, a slot, or an acoustic passage portion, and the embodiments of the present specification are not limited thereto. One or more holes 760 are the same as or substantially the same as one or more holes 360 described with reference to FIGS. 40 and 41, except that they are formed in the curved surface portion 750 formed from the back surface portion 710 of the support member 700 toward the vibration member 600, and thus overlapping descriptions thereof may be omitted.

[0467] The vibration device 500 can be connected or attached to the curved surface portion 750 so as to cover one or more holes 760, and thus can receive prestress (or pre-tensile stress) due to the curvature of the curved surface portion 750, or can vibrate in a state bent into a curved surface shape, and thus can include effects such as an increase in the second moment of area or unification of the vibration direction.

[0468] One or more holes 760 formed in each of the plurality of curved surface portions 750 can be disposed on the back surface of each of the plurality of vibration devices 500. Thereby, the vibration (or displacement) of each of the plurality of vibration devices 500 is smoothly performed, so that the vibration amplitude (or displacement amplitude) of each of the plurality of vibration devices 500 can be increased. Thereby, the sound pressure generated in the gap space (GS) is increased by the vibration of each of the plurality of vibration devices 500, so that the vibration amplitude (or displacement amplitude) of the vibration member 600 vibrating by the sound pressure in the gap space (GS) can be increased. Thereby, the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 600 can be further improved.

[0469] The device 8 according to the eighth embodiment of the present specification includes a vibration device 500 (or a vibration generator) that is subjected to prestress (or pre-tensile stress) or vibrates in a curved surface shape, so that the cross-sectional moment of inertia of the vibration device 500 increases or the vibration direction of the vibration device 500 is unified in one direction. Therefore, the acoustic characteristics and / or sound pressure characteristics generated by the vibration member 600 that vibrates due to the vibration of the vibration device 500 can be improved. And the device 8 according to the eighth embodiment of the present specification includes one or more holes 760 formed in the curved surface portion 750 of the support member 700, so that as the vibration of the vibration device 500 is performed more smoothly, the vibration amplitude (or displacement amplitude) of the vibration device 500 can be increased. Thereby, the vibration amplitude (or displacement amplitude) of the vibration member 600 is increased, and the acoustic characteristics and / or sound pressure characteristics generated by the vibration of the vibration member 600 can be further improved.

[0470] The device 8 according to the eighth embodiment of the present specification may further include an enclosure 950. The enclosure 950 may be disposed on the back surface of the support member 700. For example, the enclosure 950 may be connected or coupled to the back surface of the support member 700 so as to cover the vibration device 500. For example, the enclosure 950 may be connected or coupled to the back surface of the back surface portion 710 of the support member 700 via a coupling member 951. The enclosure 950 can form a sealed space that covers or surrounds the vibration device 500 on the back surface of the back surface portion 710 of the support member 700. Since the enclosure 950 is the same as or substantially the same as that described with reference to FIG. 39, duplicate descriptions thereof may be omitted.

[0471] FIG. 46 is a rear perspective view showing a device according to a ninth embodiment of the present invention. FIG. 47 is a cross-sectional view taken along line VII-VII' shown in FIG. 46, and FIG. 48 is a perspective view showing the support member shown in FIGS. 46 and 47.

[0472] Referring to FIGS. 46 to 48, the device 9 according to the ninth embodiment of the present invention can be one (or single) vibration component that is coupled to or attached to the vibration member 900 to vibrate the vibration member 900 to output vibration or sound. Accordingly, the device 9 according to the ninth embodiment of the present invention can be a vibration generating device, a vibration generating element, a vibration source, a vibration generating unit, a vibration unit, a vibration module, a vibration generating component, an active vibration member, an acoustic generating element, an acoustic generating unit, a transparent vibration generating device, a transparent acoustic generating unit, a translucent acoustic generating unit, an opaque acoustic generating unit, a transparent acoustic generating element, a transparent vibration source, a translucent vibration source, an opaque vibration source, or a vibration structure, but the embodiments of this specification are not limited thereto.

[0473] The device 9 according to the ninth embodiment of this specification can be applied to realize an acoustic device, an acoustic output device, a soundbar, an acoustic system, an acoustic device for a transportation device, an acoustic output device for a transportation device, or a soundbar for a transportation device. For example, the transportation device can include one or more seats and one or more glass windows. For example, the transportation device can include a vehicle, a train, a ship, or an aircraft, and the embodiments of this specification are not limited thereto. Also, the device 9 according to the ninth embodiment of this specification can realize analog signage or digital signage such as an advertising billboard, a poster, or a guide board.

[0474] The device 9 according to the ninth embodiment of the present invention can include a support member 800 and a vibration device 500.

[0475] The support member 800 can include a triangular or more polygonal form or a triangular or more non-square shape having one or more curved surfaces. For example, the support member 800 can include a square shape or a rectangular shape. For example, as shown in FIG. 49, the support member 800 can include a circular shape or an elliptical shape. The cross-section of the line VII-VII' shown in FIG. 49 is shown in FIG. 47.

[0476] The support member 800 according to an embodiment of the present specification may include a curved surface portion 850. The curved surface portion 850 may protrude in the direction of the back surface of the support member 800. The curved surface portion 850 may protrude convexly in the direction of the back surface of the support member 800 from the remaining intermediate portion of the support member 800 excluding the edge portion 811. For example, the curved surface portion 850 may be realized in a concave shape so as to have a preset curvature from the front surface 800a of the support member 800. For example, since the curved surface portion 850 is substantially the same as the curved surface portion 350 described with reference to FIGS. 1 to 5 or the curved surface portion 750 described with reference to FIGS. 37 and 38, the overlapping description thereof is omitted, and the description of the curved surface portion 350 shown in FIGS. 1 to 5 or the description of the curved surface portion 750 shown in FIGS. 37 and 38 may be included in or applied (or realized) to the description of the curved surface portion 850 shown in FIGS. 46 to 48.

[0477] The support member 800 according to an embodiment of the present specification may include a base plate 810 and a curved surface portion 850.

[0478] The base plate 810 may include a shape of a polygon with three or more sides or a non-rectangular shape with three or more sides having one or more curved surfaces. For example, the base plate 810 may include a square shape or a rectangular shape. For example, as shown in FIG. 49, the base plate 810 may include a circular shape or an elliptical shape. For example, the base plate 810 may be a base member, a base frame, or a support frame, but the embodiments of the present specification are not limited thereto.

[0479] The support member 800 or the base plate 810 may include a metal material having material characteristics suitable for outputting sound by vibration or a non-metal material (or a composite non-metal material). For example, the support member 800 or the base plate 810 may be made of a transparent plastic material, an opaque plastic material, wood, or a metal material, but the embodiments of the present specification are not limited thereto.

[0480] The curved surface portion 850 can protrude convexly in the direction of the back surface of the base plate 810. The curved surface portion 850 can protrude convexly in the direction of the back surface of the base plate 810 from the remaining intermediate portion excluding the end portion 811 of the base plate 810. For example, the curved surface portion 850 can be realized concavely from the front surface 800a of the support member 800 so as to have a preset curvature. For example, since the curved surface portion 850 is substantially the same as the curved surface portion 350 described with reference to FIGS. 1 to 5 or the curved surface portion 750 described with reference to FIGS. 37 and 38, the overlapping description thereof is omitted, and the description of the curved surface portion 350 shown in FIGS. 1 to 5 or the description of the curved surface portion 750 shown in FIGS. 37 and 38 can be included in or applied (or realized) to the description of the curved surface portion 850 shown in FIGS. 46 to 48. For example, the curved surface portion 850 can be a convex curved surface portion, a convex arch portion, or a convex protrusion portion, but the embodiments of the present specification are not limited thereto.

[0481] The vibration device 500 can be coupled or attached to the curved surface portion 850 realized on the support member 800. The vibration device 500 can output sound (or sound waves) to the front surface of the support member 800 by vibrating the curved surface portion 850 of the support member 800.

[0482] The vibration device 500 can have a size smaller than that of the curved surface portion 850. The vibration device 500 can be coupled or attached to the curved surface portion 850 so as to have an isogonal shape that follows the curvature of the curved surface portion 750 as it is, but the embodiments of the present specification are not limited thereto. For example, the vibration device 500 can have a non-isogonal shape that does not follow the curvature of the curved surface portion 850 as it is, or can be coupled or attached to the curved surface portion 750 so as to have a curvature different from the curvature of the curved surface portion 850.

[0483] According to an embodiment of the present specification, the vibration device 500 can have or receive pre-stress by the curved surface portion 850 by being coupled to or attached to the curved surface portion 850. For example, the vibration device 500 can be maintained in a state of having or receiving pre-stress by the curved surface portion 850 by being coupled to or attached to the curved surface portion 850. For example, the vibration device 500 can receive or include tensile stress due to the curvature of the curved surface portion 850. For example, the curved surface portion 850 can be realized to apply only tensile stress to the vibration device 500 in order to improve the vibration characteristics of the vibration device 500. Therefore, since the vibration device 500 can receive pre-stress (or pre-tensile stress) or vibrate in a state of being bent into a curved surface shape, it can include effects such as an increase in the second moment of area or the unification of the vibration direction.

[0484] The vibration device 500 can include the vibration device 500 described with reference to FIGS. 6 to 9 and the vibration generator described with reference to FIGS. 24 to 35D. Therefore, the description of the vibration device 500 shown in FIGS. 6 to 9 and the description of the vibration generator 510 shown in FIGS. 24 to 35D can be included in or applied (or realized) to the description of the vibration device 500 shown in FIGS. 46 to 48, so duplicate descriptions thereof can be omitted.

[0485] The device 9 accord...

Claims

1. A vibrating member, A support member located on the back surface of the vibrating member and including a curved surface portion, A vibration device located on the support member and including a curved surface shape, A gap space between the curved surface portion of the support member and the vibrating member, Including, The support member is located between the vibrating member and the vibration device, The curved surface portion of the support member is separated from the back surface of the vibrating member with the gap space therebetween, A device capable of outputting sound.

2. The device according to claim 1, wherein the vibration device includes a film-shaped vibration device.

3. The device according to claim 1, wherein the vibration device is disposed on the curved surface portion and bent into a curved surface shape by the curved surface portion.

4. The support member, A back surface portion located on the back surface of the vibrating member and including the curved surface portion, A side surface portion connected to the edge of the back surface portion and configured to support the vibrating member Including, the device according to claim 3.

5. The device according to claim 4, wherein the curved surface portion protrudes convexly from the back surface portion to the back surface of the support member.

6. The vibration device, A vibration generator, Including a connecting member between the curved surface portion and the vibration generator, the device according to claim 3.

7. The vibration generator, A vibration layer including a piezoelectric material, A first electrode layer on the first surface of the vibration layer, A second electrode layer on a second surface different from the first surface of the vibration layer, the device according to claim 6.

8. The vibration generator, A vibration layer including a plurality of inorganic material portions and a plurality of organic material portions between the plurality of inorganic material portions, A first electrode layer on the first surface of the vibration layer, A second electrode layer on a second surface different from the first surface of the vibration layer, the device according to claim 6.

9. The device according to claim 6, further including a plate between the curved surface portion and the connecting member.

10. The device according to claim 6, further including one or more holes in the curved surface portion.

11. The device according to claim 1, wherein the distance between the central portion of the vibration device and the vibrating member is different from the distance between the edge portion of the vibration device and the vibrating member.

12. The curved surface portion further includes one or more holes, The vibration device, A plate configured to cover the one or more holes, A vibration generator on the back surface of the plate, Including a connecting member between the plate and the vibration generator, the device according to claim 11.

13. The device according to claim 12, wherein the plate comprises one or more materials among metal, plastic, paper, wood, rubber, fiber, cloth, and leather.

14. The device according to claim 13, wherein the vibration device further comprises a weight member on the back surface of the vibration generator.

15. The vibration member includes one or more of a display panel having pixels configured to display an image, a screen panel onto which an image is projected from a display device, a light-emitting diode lighting panel, an organic light-emitting lighting panel, an inorganic light-emitting lighting panel, and a signage panel, or comprises one or more materials among metal, wood, rubber, plastic, glass, fiber, cloth, paper, mirror, and leather. The device according to any one of claims 1 to 14.

16. The vibration member includes a display panel having pixels configured to display an image, and a guide member configured to support an edge portion on the back surface of the display panel and supported by the support member, and the display panel is configured to vibrate by the vibration of the vibration device to output the sound. The device according to any one of claims 1 to 14.

17. The device according to claim 16, wherein the display panel is any one of a liquid crystal display panel, a light-emitting display panel, an electrophoretic display panel, a micro light-emitting diode display panel, an electronic wetting display panel, and a quantum dot light-emitting display panel.

18. The vibration member further includes a backlight between the display panel and the support member, the vibration device is configured to vibrate the backlight, and the display panel is configured to vibrate by the vibration of the backlight to output the sound. The device according to claim 17.

19. A vibration member, a support member on the back surface of the vibration member, including a plurality of curved surfaces, a plurality of vibration devices respectively arranged on each of the plurality of curved surfaces of the support member and including a curved surface shape, and a plurality of gap spaces respectively between the curved surface portion of the support member and the vibration member, wherein the support member is located between the vibration member and the vibration device, a device capable of outputting sound.

20. The plurality of curved surfaces include a first curved surface portion and a second curved surface portion, the plurality of vibration devices include a first vibration device and a second vibration device, the first vibration device is attached to the first curved surface portion, and the second vibration device is attached to the second curved surface portion. The device according to claim 19. **Claim 21** The support member further includes a back surface portion, The device according to claim 20, wherein each of the first curved surface portion and the second curved surface portion protrudes from the back surface portion so as to have different curvatures or the same curvature. **Claim 22** The device according to claim 20, wherein the size of the first curved surface portion is different from or the same as the size of the second curved surface portion. **Claim 23** The device according to claim 21, wherein the support member further includes a reinforcing portion at the center of the back surface portion. **Claim 24** The device according to any one of claims 20 to 23, further including one or more holes or one or more slits disposed in one or more of the first curved surface portion and the second curved surface portion.

Images