Sound output device

Abstract

A sound output device may include: a vibration member including a vibration plate including a pattern portion; and a vibrating device configured to vibrate the vibrating member based on the piezoelectric effect. The pattern portion includes one or more of a plurality of holes and a plurality of grooves and is configured to increase an average sound pressure level of the sound output device.

Description

[0001] Cross - reference to related applications

[0002] This application claims the benefit of Korean Patent Application No. 10 - 2023 - 0192927, filed on December 27, 2023, which is hereby incorporated by reference in its entirety as if fully set forth herein. Technical field

[0003] The present disclosure relates to a sound output device, and more particularly, to a sound output device that outputs sound by vibrating a vibration member. Background art

[0004] Recently, there has been an increasing demand for thinner electronic devices. Among speakers applied to electronic devices, piezoelectric devices that can be implemented with a thin thickness instead of voice coils have attracted wide attention based on the demand for thinner electronic devices.

[0005] A speaker (as a sound output device) with a piezoelectric device (as a vibration device) can generate (or output) sound by vibrating a vibration member according to the vibration of the piezoelectric device. The sound quality and / or sound pressure characteristics of the sound generated (or output) according to the vibration of the vibration member can vary depending on the material and structure of the vibration member. Therefore, it is necessary to improve or optimize the sound quality and / or sound pressure characteristics of the sound generated (or output) by the vibration member when driven by a piezoelectric device. Summary of the invention

[0006] The inventors of the present disclosure have recognized these limitations and have conducted various studies and experiments in order to improve or optimize the sound quality characteristics and / or sound pressure characteristics of the sound generated (or output) depending on the material and structure of the vibration member (or diaphragm) in the sound output device.

[0007] One or more aspects of the present disclosure aim to provide a sound output device that can enhance the sound characteristics and / or sound pressure level characteristics of sound.

[0008] Additional features, advantages, and aspects of the present disclosure are partially set forth in the present disclosure and will also become apparent from the present disclosure, or may be understood by practicing the inventive concepts provided herein. Other features, advantages, and aspects of the present disclosure may be realized and obtained by the structures specifically pointed out in the present disclosure and the structures derived from the present disclosure, its claims, and the drawings.

[0009] To achieve these and other advantages and aspects of the present disclosure, as embodied and broadly described herein, in one or more aspects, a sound output device may include: a vibration member including a diaphragm that includes a pattern portion; and a vibration device configured to vibrate the vibration member based on the piezoelectric effect. The pattern portion includes one or more of a plurality of holes and a plurality of grooves and is configured to increase the average sound pressure level of the sound output device.

[0010] To achieve these and other advantages and aspects of the present disclosure, as embodied and broadly described herein, in one or more aspects, a sound device may include the sound output device as described above, a support member disposed to face the vibration member of the sound output device, and a coupling member for connecting or coupling the support member to the vibration member.

[0011] The sound output device according to an embodiment of the present disclosure can enhance the sound characteristics and / or the sound pressure level characteristics of sound.

[0012] The sound output device according to an embodiment of the present disclosure may include a vibration member including a pattern portion, and thus, the flatness of the sound pressure level of the sound output device can be enhanced.

[0013] In the sound output device according to an embodiment of the present disclosure, the vibration member may include a protective member and an adhesive member, and thus, the diaphragm can be protected and the peaks and valleys of the sound pressure level curve of the sound output device can be improved, thereby enhancing the flatness of the sound pressure level of the sound output device.

[0014] It should be understood that the foregoing general description and the following detailed description of the present disclosure are both exemplary and explanatory and are intended to provide further explanation of the claimed present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. In the drawings:

[0016] Figure 1 is a perspective view showing a sound output device according to an embodiment of the present disclosure;

[0017] Figure 2 is a cross-sectional view taken along line I-I' shown in Figure 1 as shown in;

[0018] Figure 3 is a perspective view showing a vibration member according to an embodiment of the present disclosure;

[0019] Figure 4is an exploded perspective view showing a vibration member according to another embodiment of the present disclosure;

[0020] Figure 5 is a perspective view showing a vibration member according to another embodiment of the present disclosure;

[0021] Figure 6 is a cross-sectional view taken along line II-II' shown in Figure 5 according to an embodiment of the present disclosure;

[0022] Figure 7 is a cross-sectional view taken along line II-II' shown in Figure 5 according to another embodiment of the present disclosure;

[0023] Figure 8 is a perspective view showing a vibration member according to another embodiment of the present disclosure;

[0024] Figure 9 is a cross-sectional view taken along line III-III' shown in Figure 8 according to an embodiment of the present disclosure;

[0025] Figure 10 is a cross-sectional view taken along line III-III' shown in Figure 8 according to another embodiment of the present disclosure;

[0026] Figure 11 is a perspective view showing a vibration device according to an embodiment of the present disclosure;

[0027] Figure 12 is a cross-sectional view taken along line IV-IV' shown in Figure 11 according to another embodiment of the present disclosure;

[0028] Figure 13 is a cross-sectional view taken along line V-V' shown in Figure 11 according to an embodiment of the present disclosure;

[0029] Figure 14 is a perspective view showing a vibration layer according to another embodiment of the present disclosure;

[0030] Figure 15 is a perspective view showing a vibration layer according to another embodiment of the present disclosure;

[0031] Figure 16 is an exploded perspective view showing a vibration device according to another embodiment of the present disclosure;

[0032] Figure 17 is a graph showing the sound pressure level characteristics of a sound output device according to an experimental example and an embodiment of the present disclosure;

[0033] Figure 18 is a graph showing the sound pressure level characteristics of a sound output device according to an experimental example and an embodiment of the present disclosure;

[0034] Figure 19 is a graph showing the sound pressure level characteristics with respect to frequency based on the size of a vibration member according to an experimental example and an embodiment of the present disclosure;

[0035] Figure 20 is a graph showing the sound pressure level characteristics according to an experimental example and another embodiment of the present disclosure;

[0036] Figure 21 is a graph showing the average sound pressure level and standard deviation according to an experimental example and another embodiment of the present disclosure;

[0037] Figure 22 is a cross-sectional view of a vehicular sound device according to an embodiment of the present disclosure;

[0038] Figure 23 is a diagram showing according to an embodiment of the present disclosure Figure 22 an exploded perspective view of the sound output device shown in, wherein the vibration device is omitted; and

[0039] Figure 24 is a graph showing the sound pressure level characteristics of the sound output device shown in according to an experimental example and an embodiment of the present disclosure Figure 22 thereof. DETAILED DESCRIPTION

[0040] Now, reference will be made in detail to various aspects of the present disclosure, examples of which are illustrated in the accompanying drawings. In the following description, when a detailed description of known functions, structures, or configurations may unnecessarily obscure aspects of the present disclosure, the detailed description of these known functions or configurations may be omitted for the sake of brevity. In addition, repetitive descriptions may be omitted for the sake of brevity. The progress of the described processing steps and / or operations is a non-limiting example.

[0041] The order of steps and / or operations is not limited to the order set forth herein, and steps and / or operations may be changed to occur in an order different from the order described herein, except for steps and / or operations that must occur in a specific order. In one or more examples, two consecutive operations may be performed substantially simultaneously, or the two operations may be performed in a reverse order or in a different order depending on the functions or operations involved.

[0042] Unless otherwise specified, the same reference numerals may refer to the same elements throughout, even when shown in different figures. In one or more aspects, unless otherwise specified, the same elements (or elements with the same name) in different figures may have the same or substantially the same functions and characteristics. The names of the various elements used in the following description are chosen for convenience only and may thus be different from the names used in actual products.

[0043] Advantages and features of the present disclosure, and methods of implementing them, will become clear by describing multiple aspects with reference to the accompanying drawings. However, the present disclosure may be implemented in different forms and should not be construed as limited to the example aspects set forth herein. Rather, these example aspects are examples and are provided so that the present disclosure may be thorough and complete, to assist those skilled in the art in understanding the inventive concept without limiting the scope of the present disclosure.

[0044] The shapes (e.g., dimensions, length, width, height, thickness, position, radius, diameter, and area), dimensions, ratios, angles, quantities, etc., disclosed herein, including those shown in the drawings, are only examples, and thus, the present disclosure is not limited to the details illustrated. Any embodiment described herein as an "example" should not necessarily be construed as being preferred or advantageous over other embodiments. However, it should be noted that the relative dimensions of the components shown in the drawings are part of the present disclosure.

[0045] When using terms such as "comprising," "having," "including," "containing," "constituting," "made of," "formed of," etc., with respect to one or more elements, one or more other elements may be added, unless terms such as "only" are used. The terms used in the present disclosure are only for describing example aspects and are not intended to limit the scope of the present disclosure. Singular forms of terms may include plural forms, unless the context clearly indicates otherwise.

[0046] The word "exemplary" is used to mean serving as an example or illustration, unless otherwise specified. Multiple aspects are example aspects. "Aspect," "example," etc. should not be construed as being preferred or advantageous over other embodiments. Unless otherwise specified, an aspect, an example, an example aspect, etc. may refer to one or more aspects, one or more examples, one or more example aspects, etc. Additionally, the term "may" encompasses all meanings of the term "can."

[0047] In one or more aspects, unless otherwise explicitly stated, an element, feature, or corresponding information (e.g., level, range, dimension, size, etc.) is interpreted to include an error or tolerance range, even if no explicit statement of such error or tolerance range is provided. The error or tolerance range may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). When interpreting a numerical value, unless otherwise explicitly stated, the value is interpreted to include an error range.

[0048] When describing a positional relationship, when using terms such as "above", "on top", "top", "above", "below", "over", "under", "beneath", "near", "close to", "adjacent", "beside", "next to", "alongside", etc. to describe the positional relationship between two parts (e.g., layer, film, region, component, part, etc.), one or more other parts may be located between these two parts, unless more restrictive terms such as "immediately (adjacent to)", "directly", or "closely" are used. For example, when a structure is described as being "above", "on top", "top", "above", "below", "over", "under", "beneath", "near", "close to", "adjacent", "beside", "next to", "alongside", etc. another structure, this description should be interpreted to include the case where these structures are in contact with each other and the case where one or more additional structures are disposed or inserted therebetween. In addition, the terms "front", "rear", "back", "left", "right", "top", "bottom", "down", "up", "upper", "lower", "above", "below", "column", "row", "vertical", "horizontal", etc. refer to any reference system.

[0049] Spatial relative terms, such as "below", "beneath", "lower", "above", "over", "upper", etc., may be used to describe the association between various elements (e.g., layer, film, region, component, part, etc.) as shown in the figures. Spatial relative terms should be understood to include terms for different orientations of the elements in use or operation in addition to the orientation depicted in the drawings. For example, if the element shown in the drawing is flipped, the element described as being "below" or "beneath" other elements will be oriented "above" the other elements. Thus, the term "below", as an example term, may include all directions of "above" and "below". Similarly, the exemplary terms "above" or "on" may include both directions of "above" and "below".

[0050] When describing temporal relationships, when the temporal order is described as "after", "subsequently", "then", "before", "prior to", "earlier than", etc., discontinuous or non-sequential cases may be included, and thus one or more other events may occur therebetween, unless more restrictive terms such as "just", "immediately", or "directly" are used.

[0051] Terms such as "below", "lower", "above", "upper", etc. may be used herein to describe the relationship between (multiple) elements as shown in the figures. It should be understood that these terms are spatially related and based on the orientation depicted in the drawings.

[0052] It should be understood that although terms such as "first", "second", etc. may be used herein to describe various elements (e.g., layers, films, regions, components, parts, etc.), these elements should not be limited by these terms to any specific order, sequence, priority, or quantity of the elements. These terms are only used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of the present disclosure. In addition, without departing from the scope of the present disclosure, the first element, the second element, etc. may be arbitrarily named according to the convenience of those skilled in the art. For clarity, the function or structure of these elements (e.g., the first element, the second element, etc.) is not limited by the serial number or name in front of the element. In addition, the first element may include one or more first elements. Similarly, the second element, etc. may include one or more second elements, etc.

[0053] When describing the elements of the present disclosure, terms such as "first", "second", "A", "B", "(a)", "(b)", etc. may be used. These terms are intended to distinguish the corresponding elements from other elements, and are not used to define the essence, basis, order, or quantity of the elements.

[0054] For the description of an element (e.g., a layer, a film, a region, a component, a part, etc.) being "connected", "coupled", "attached", "adhered", etc. to another element, the element can not only be directly connected, coupled, attached, adhered, etc. to another element, but also be indirectly connected, coupled, attached, adhered, etc. to another element, and one or more intermediate elements are provided or inserted between these elements, unless otherwise stated.

[0055] For the description of an element (e.g., a layer, a film, a region, a component, a part, etc.) "contacting", "overlapping", etc. with another element, the element can not only directly contact, overlap, etc. with another element, but also indirectly contact, overlap, etc. with another element, and one or more intermediate elements are provided or inserted between these elements, unless otherwise stated.

[0056] The terms such as an element (e.g., a layer, a film, a region, a component, a part, etc.) being "provided on", "disposed on" another element, etc. can be understood as (for example) at least a part of the element being provided on, disposed on at least a part of another element, etc., or the whole of the element being provided on, disposed on another element. The terms such as an element (e.g., a layer, a film, a region, a component, a part, etc.) being "in contact with", "overlapping" another element, etc. can be understood as at least a part of the element being in contact with, overlapping at least a part of another element, etc., the whole of the element being in contact with, overlapping at least a part of another element, etc., or at least a part of the element being in contact with, overlapping the whole of another element.

[0057] Terms such as "line" or "direction" should not be interpreted solely based on the geometric relationship in which the corresponding lines or directions are parallel or perpendicular to each other. Such terms can represent a wider range of lines or directions within which the components of the present disclosure can operate functionally. For example, terms such as "first direction", "second direction", etc., which are, for example, directions parallel or perpendicular to the "x-axis", "y-axis", or "z-axis", should not be interpreted solely based on the geometric relationship in which the respective directions are parallel or perpendicular to each other, and can represent directions with a wider directivity within the range where the components of the present disclosure can operate functionally.

[0058] The term "at least one" should be understood to include any and all combinations of one or more of the relevant listed items. For example, each of the phrases "at least one of the first item, the second item, or the third item" and "at least one of the first item, the second item, and the third item" can represent (i) a combination of items provided by two or more of the first item, the second item, and the third item, or (ii) only one of the first item, the second item, or the third item.

[0059] The expression of a first element, a second element "and / or" a third element should be understood to cover one of the first, second, and third elements and any and all combinations of the first, second, and third elements. For example, A, B, and / or C can mean: only A; only B; only C; any one of A, B, and C (e.g., A, B, or C); some combinations of A, B, and C (e.g., A and B; A and C; or B and C); and all of A, B, and C. In addition, the expression "A / B" can be understood as A and / or B. For example, the expression "A / B" can mean: only A; only B; A or B; or A and B.

[0060] In one or more aspects, unless otherwise specified, for convenience, the terms "between" and "among" may be used interchangeably. For example, the statement "between multiple elements" may be understood as among multiple elements. In another example, the statement "among multiple elements" may be understood as between multiple elements. In one or more examples, the number of elements may be two. In one or more examples, the number of elements may be more than two. Additionally, when an element (e.g., a layer, film, region, component, part, etc.) is said to be located "between" at least two elements, the element may be the only element between the at least two elements, or there may also be one or more intermediate elements.

[0061] In one or more aspects, unless otherwise specified, for convenience, the phrases "each other" and "one another" may be used interchangeably. For example, the statement "different from each other" may be understood as different from one another. In another example, the statement "different from one another" may be understood as different from each other. In one or more examples, the number of elements involved in the above statements may be two. In one or more examples, the number of elements involved in the above statements may be more than two.

[0062] In one or more aspects, unless otherwise specified, for convenience, the phrases "one or more of..." and "one or more among..." may be used interchangeably.

[0063] The term "or" means "inclusive or" rather than "exclusive or". That is, unless otherwise specified or clearly apparent from the context, the statement "x uses a or b" means any of the natural inclusive arrangements. For example, "a or b" may mean "a", "b", or "a and b". For example, "a, b, or c" may mean "a", "b", "c", "a and b", "b and c", "a and c", or "a, b, and c".

[0064] The features of the various aspects of the present disclosure may be partially or fully coupled or combined with each other, may be technically related to each other, and may interoperate, link, or drive together in various ways. The multiple aspects of the present disclosure may be implemented or executed independently of each other, or may be implemented or executed together in a mutually dependent or related relationship. In one or more aspects, the components of each device according to the various aspects of the present disclosure are operably coupled and configured.

[0065] Unless otherwise defined, the terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the example aspects belong. It should be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0066] The terms used herein have been selected as common terms in the relevant technical field; however, there may be other terms depending on the development and / or changes of the technology, conventions, preferences of those skilled in the art, etc. Therefore, the terms used herein should not be construed as limiting the technical concept, but should be construed as examples of the terms used to describe the example aspects.

[0067] In addition, in specific cases, the terms may be arbitrarily selected by the applicant, and in such cases, their detailed meanings are described herein. Therefore, the terms used herein should be understood not only based on the name of the terms, but also based on the meanings and their contents of the terms.

[0068] In the following description, various example aspects of the present disclosure are described in detail with reference to the accompanying drawings. For the reference numerals of the elements of each drawing, the same elements may be shown in other drawings, and unless otherwise stated, similar reference numerals may refer to similar elements. Even if the same or similar elements are depicted in different drawings, they may be represented by the same reference numerals. Additionally, for convenience of description, the ratios, dimensions, sizes, and thicknesses of each element shown in the drawings may be different from the actual ratios, dimensions, sizes, and thicknesses. Therefore, the various aspects of the present disclosure are not limited to the ratios, dimensions, sizes, or thicknesses shown in the drawings.

[0069] Figure 1 is a perspective view showing a sound output device according to an embodiment of the present disclosure. Figure 2 is a cross-sectional view taken along line I-I' shown in Figure 1 in accordance with an embodiment of the present disclosure.

[0070] Referring to Figure 1 and Figure 2, a sound output device according to an embodiment of the present disclosure may be implemented as or realized as at least one of a soundbar, a sound system, a sound device for an electronic device, a sound device for a display, a sound device for a vehicle device (or a transportation device), a soundbar for a vehicle device (or a transportation device), etc. For example, the vehicle device (or the transportation device) may include a car, a train, a ship, or an aircraft, but the embodiments of the present disclosure are not limited thereto. In addition, the sound output device according to an embodiment of the present disclosure may be implemented as or realized as an analog sign or a digital sign such as an advertising signboard, a poster, or a bulletin board.

[0071] A sound output device according to an embodiment of the present disclosure may include a vibration member 100 and a vibration device 500.

[0072] The vibration member 100 may generate vibration or output sound (or sound waves) based on the displacement (or drive) of the vibration device 500. The vibration member 100 may be a vibrating object, a sign panel, a passive vibration plate, a front member, a vibration panel, a sound panel, a passive vibration panel, a sound output plate, a sound vibration plate, etc., but the embodiments of the present disclosure are not limited thereto. More generally, the vibration member 100 may be a member that can vibrate when driven.

[0073] The vibration member 100 according to an embodiment of the present disclosure may include a polygonal shape, which includes a rectangular shape or a square shape, but the embodiments of the present disclosure are not limited thereto. The vibration member 100 may include a lateral length parallel to a first direction X (e.g., Figure 1 and Figure 2 the X direction shown in Figure 1 and Figure 2 ), and a longitudinal length parallel to a second direction Y (e.g.,

[0074] According to an embodiment of the present disclosure, the vibration member 100 may include an entire structure having (e.g., substantially) the same thickness (e.g., uniform thickness), but embodiments of the present disclosure are not limited thereto. For example, the vibration member 100 may include a plate structure having (e.g., substantially) the same thickness (e.g., uniform thickness) throughout its entire structure, but embodiments of the present disclosure are not limited thereto. For example, the vibration member 100 may include a non-planar structure having a raised portion and / or a recessed portion. For example, the vibration member 100 according to an embodiment of the present specification may be configured to have different thicknesses at an edge portion and a central portion other than the edge portion.

[0075] According to an embodiment of the present disclosure, the vibration member 100 may include a first surface 100a and a second surface 100b. The first surface 100a of the vibration member 100 may be a front surface, a forward surface, a top surface, or an upper surface. The second surface 100b may be a rear surface, a backward surface, a dorsal side, a back surface, a bottom surface, or a lower surface.

[0076] According to an embodiment of the present disclosure, the vibration member 100 may be implemented as or realized as a sign panel, such as an advertising signboard, a poster, a bulletin board, etc., an analog sign, a digital sign, etc. For example, when the vibration member 100 may be implemented as a sign panel, the analog sign may include sign contents, such as sentences, pictures, and logos, etc. The sign contents may be provided at the vibration member 100 so as to be visible or viewable. For example, the sign contents may be attached to one or more areas of the first surface 100a of the vibration member 100. For example, the sign contents may be directly attached to one or more areas of the first surface 100a of the vibration member 100. For example, the sign contents may be printed on a medium such as paper, and the medium having the sign contents printed thereon may be directly attached to one or more areas of the first surface 100a of the vibration member 100. For example, when the sign contents are attached to the first surface 100a of the vibration member 100, the vibration member 100 may be configured as a transparent material.

[0077] The vibration member 100 according to an embodiment of the present disclosure may include two or more kinds of materials. The vibration member 100 may include a multi-layer structure (which includes different materials). For example, the vibration member 100 may include two or more portions including two or more different materials. The vibration member 100 may include a central portion and an outer portion, which include different materials. For example, the vibration member 100 may be configured to have a core-shell structure. For example, the vibration member 100 may be configured to include a core-shell structure of different materials.

[0078] The vibration device 500 may be configured to vibrate the vibration member 100. The vibration device 500 may be provided or configured on the vibration member 100. The vibration device 500 may be configured to vibrate (or displace or drive) the vibration member 100 according to an applied drive signal (or electrical signal or voice signal). For example, the vibration device 500 may be an active vibration panel, a vibration generator, a vibration structure, a vibrator, a vibration generating device, a sound generator, an acoustic device, a sound generating structure, or a sound generating element, but embodiments of the present disclosure are not limited thereto.

[0079] The vibration device 500 according to an embodiment of the present disclosure may include a piezoelectric material or an electroactive material having piezoelectric properties. The vibration device 500 may vibrate (or displace or drive) autonomously based on the vibration (or displacement or drive) of the piezoelectric material according to a drive signal applied to the piezoelectric material, or may vibrate (or displace or drive) the vibration member 100 or the like. For example, the vibration device 500 may alternately repeat contraction and / or expansion based on the piezoelectric effect (or piezoelectric properties) in order to vibrate (or displace or drive). For example, as the contraction and / or expansion is alternately repeated by the inverse piezoelectric effect, the vibration device 500 may vibrate (or displace or drive) in the third direction Z (e.g., the vertical direction or the thickness direction).

[0080] The vibration device 500 according to an embodiment of the present disclosure may include a quadrilateral shape having a first length parallel to the first direction X and a second length parallel to the second direction Y. For example, the vibration device 500 may include a square shape in which the first length is the same as the second length, but embodiments of the present disclosure are not limited thereto. The vibration device 500 may have a relatively small size (or area) compared to the vibration member 100.

[0081] The sound output device according to an embodiment of the present disclosure may further include a connection member 400.

[0082] The connection member 400 may be provided or connected between the vibration device 500 and the vibration member 100. The connection member 400 may be provided between the vibration device 500 and the vibration member 100 and may connect or couple the vibration device 500 to the vibration member 100. For example, the vibration device 500 may be connected or coupled to the vibration member 100 through the connection member 400. For example, the vibration device 500 may be connected to the second surface 100b of the vibration member 100 or supported thereby through the connection member 400, but embodiments of the present disclosure are not limited thereto.

[0083] The connection member 400 according to an embodiment of the present disclosure may include an adhesive layer (or a viscous layer) adapted to provide an attachment force or an adhesive force. For example, the connection member 400 may be configured to include a material of an adhesive layer adapted to provide an attachment force or an adhesive force to each of the second surface 100b of the vibration device 500 and the vibration member 100. For example, the connection member 400 may include a foam pad, a double-sided tape, a double-sided foam pad, a double-sided foam tape, an adhesive, a double-sided adhesive, a double-sided adhesive tape, a double-sided adhesive foam pad, a viscous sheet, etc., but the embodiments of the present disclosure are not limited thereto. For example, when the connection member 400 includes a viscous sheet (or an adhesive layer), the connection member 400 may include only the adhesive layer or the viscous layer without including a base member such as a plastic material.

[0084] The adhesive layer of the connection member 400 according to an embodiment of the present disclosure may include a pressure-sensitive adhesive (PSA), an optically clear adhesive (OCA), an optically clear resin (OCR), an epoxy resin, an acrylic resin, a silicone resin, a polyurethane resin, etc., but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the connection member 400 may include an acrylic-based substance (or material) having relatively good adhesive force and high hardness. Therefore, the transmission efficiency of the vibration force (or displacement force) transmitted from the vibration device 500 to the vibration member 100 can be improved.

[0085] According to an embodiment of the present disclosure, the sound output device may further include a support member 300.

[0086] The support member 300 may be configured or disposed on the rear surface of the vibration member 100. The support member 300 may be configured or disposed on the second surface 100b of the vibration member 100. The support member 300 may be configured to support the peripheral portion of the second surface 100b of the vibration member 100. The support member 300 may be configured to support the peripheral portion of the rear surface of the vibration member 100. The support member 300 may be configured to cover the vibration device 500 and the second surface 100b of the vibration member 100.

[0087] According to an embodiment of the present disclosure, the support member 300 may include an internal space 300S surrounding the second surface 100b of the vibration member 100. For example, the support member 300 may have a box shape, where one side (or a part or the upper side or the upper portion) of the internal space 300S is open. For example, the support member 300 may be a housing, an outer housing, a housing member, a casing, a casing member, a cabinet, an enclosure, a sealing member, a sealing cover, a sealed box, a speaker, a receiving member, a receiving component, etc., but the embodiments of the present disclosure are not limited thereto. For example, the internal space 300S of the support member 300 may be a receiving space, a receiving cavity, a clearance space, an air space, a vibration space, a sound space, a speaker, a sealed space, a resonance space, etc., but the embodiments of the present disclosure are not limited thereto.

[0088] According to an embodiment of the present disclosure, the support member 300 may include one or more of a metallic material and a non-metallic material (or a composite non-metallic material), but the embodiments of the present disclosure are not limited thereto. For example, the support member 300 may include one or more of a metallic material, plastic, and wood, but the embodiments of the present disclosure are not limited thereto.

[0089] According to an embodiment of the present disclosure, the support member 300 may include a first support portion 310 and a second support portion 330.

[0090] The first support portion 310 may be arranged parallel to the vibration member 100. The first support portion 310 may be arranged to face the second surface 100b of the vibration member 100. The first support portion 310 may be arranged to cover the vibration device 500 and the second surface 100b of the vibration member 100. The first support portion 310 may be spaced apart from the vibration device 500 and the second surface 100b of the vibration member 100. For example, the first support portion 310 may be spaced apart from the second surface 100b of the vibration member 100, and the internal space 300S is located therebetween. For example, the first support portion 310 may be a bottom portion, a bottom plate, a support plate, a housing plate, a housing bottom portion, etc., but the embodiments of the present disclosure are not limited thereto.

[0091] The second support portion 330 may be configured or arranged at a peripheral portion of the vibration member 100. The second support portion 330 may be connected to a peripheral portion of the first support portion 310. For example, the second support portion 330 may include a structure bent from a peripheral portion of the first support portion 310. For example, the second support portion 330 may be parallel to the third direction Z (e.g., the Z direction as shown in Figure 1 and Figure 2 ), or may be inclined with respect to the third direction Z. For example, the support member 300 may include two or more second support portions 330. For example, the second support portion 330 may be a side portion, a side wall, a support side wall, an outer housing side surface, an outer housing side wall, etc., but the embodiments of the present disclosure are not limited thereto.

[0092] The second support part 330 can be integrated with the first support part 310. For example, the first support part 310 and the second support part 330 can be integrated (or configured) as one body (a single body). Thus, the internal space 300S surrounded by the second support part 330 can be provided above the first support part 310. Accordingly, the support member 300 can include a box shape, in which one side (or a part or the upper side or the upper portion) of the internal space is open through the first support part 310 and the second support part 330.

[0093] The support member 300 can be connected or coupled to the vibration member 100 through the coupling member 200. The support member 300 can be connected or coupled to the second surface 100b of the vibration member 100 through the coupling member 200. For example, the support member 300 can be connected or coupled to the peripheral portion of the second surface 100b of the vibration member 100 through the coupling member 200. For example, the second support part 330 can be connected or coupled to the vibration member 100 through the coupling member 200. For example, the second support part 330 can be connected or coupled to the second surface 100b of the vibration member 100 through the coupling member 200. For example, the second support part 330 can be connected or coupled to the peripheral portion of the second surface 100b of the vibration member 100 through the coupling member 200.

[0094] The coupling member 200 can be configured to minimize or prevent the vibration of the vibration member 100 from being transmitted to the support member 300. The coupling member 200 can include material properties suitable for blocking vibration. For example, the coupling member 200 can include an elastic material. For example, the coupling member 200 can include a material having elasticity for vibration absorption (or shock absorption). The coupling member 200 according to an embodiment of the present disclosure can be configured to (or include) a polyurethane material and / or a polyolefin material, but the embodiments of the present disclosure are not limited thereto. For example, the coupling member 200 can include one or more of an adhesive, a double-sided adhesive, a double-sided tape, a double-sided foam tape, a double-sided foam pad, and a double-sided buffer tape, but the embodiments of the present disclosure are not limited thereto.

[0095] The coupling member 200 according to an embodiment of the present disclosure can prevent physical contact (or friction) between the vibration member 100 and the second support part 330 of the support member 300, thereby preventing the occurrence of noise (or noise) that may be caused by physical contact (or friction) between the vibration member 100 and the support member 300. For example, the coupling member 200 can be a buffer member, an elastic member, a damping member, a vibration absorption member, a vibration prevention member, or a vibration blocking member, but the embodiments of the present disclosure are not limited thereto.

[0096] According to another embodiment of the present disclosure, the coupling member 200 may be configured to minimize or prevent the vibration of the vibration member 100 from being transmitted to the support member 300, and reduce the reflection of incident sound waves that may be generated based on the vibration of the vibration member 100.

[0097] According to another embodiment of the present disclosure, the coupling member 200 may include a first coupling member 210 and a second coupling member 230.

[0098] The first coupling member 210 may be disposed in the region between the vibration member 100 and the support member 300. The first coupling member 210 may be disposed in the region between the vibration member 100 and the second support portion 330 of the support member 300. The first coupling member 210 may be disposed or coupled between the rear peripheral portion of the vibration member 100 and the second support portion 330. For example, the first coupling member 210 may be disposed inward (or toward the interior of the device) from the second coupling member 230. The first coupling member 210 may be configured to have a hardness less than that of the second coupling member 230, such as (elastic) modulus or Young's modulus (or elastic modulus). For example, the first coupling member 210 may include a double-sided polyurethane tape, a double-sided polyurethane foam tape, a double-sided sponge tape, etc., but the embodiments of the present disclosure are not limited thereto.

[0099] The second coupling member 230 may be disposed at the region between the vibration member 100 and the support member 300. For example, the second coupling member 230 may be disposed at the region between the vibration member 100 and the support member 300 so as to surround the first coupling member 210. The second coupling member 230 may be disposed or coupled between the rear peripheral portion of the vibration member 100 and the second support portion 330 of the support member 300. For example, the second coupling member 230 may be disposed or coupled between the rear peripheral portion of the vibration member 100 and the second support portion 330 of the support member 300 so as to surround the first coupling member 210. For example, the second coupling member 230 may be disposed outward (or toward the outside of the sound output device) from the first coupling member 210. The second coupling member 230 may be configured to have a hardness greater than that of the first coupling member 210, such as (elastic) modulus or Young's modulus (or elastic modulus). For example, the second coupling member 230 may include a double-sided polyolefin tape, a double-sided polyolefin foam tape, a double-sided acrylic tape, a double-sided acrylic foam tape, etc., but the embodiments of the present disclosure are not limited thereto.

[0100] The relatively soft first coupling member 210 disposed inwardly from the relatively rigid (or harder) second coupling member 230 can absorb incident sound waves that may be generated based on the vibration of the vibration member 100. Accordingly, the sound (or wave) generated by reflection from the coupling member 200 can be minimized or suppressed. Accordingly, the flatness of the sound pressure level generated based on the vibration of the vibration member 100 can be reduced. For example, the flatness of the sound pressure level can be the deviation level between the highest sound pressure level and the lowest sound pressure level within the pitched sound band generated based on the vibration of the vibration member 100.

[0101] In the coupling member 200 according to another embodiment of the present disclosure, the relatively rigid second coupling member 230 can be disposed inwardly (or toward the inside of the sound output device) from the relatively soft (or softer than the second coupling member 230) first coupling member 210. Accordingly, the sound pressure level in a specific pitched sound band of the sound can be reduced. For example, due to the reflected sound (or reflected wave or standing wave) generated by reflection from the relatively rigid second coupling member 230, the sound pressure level in the sound bands of 2 kHz to 5 kHz and 7 kHz to 12 kHz can be reduced. Accordingly, when it is necessary to reduce the sound pressure level in the sound bands of 2 kHz to 5 kHz and 7 kHz to 12 kHz based on the shape and size of the vibration member 100, the relatively rigid second coupling member 230 can be disposed inwardly from the relatively soft first coupling member 210. In this way, the flatness of the sound pressure level can be improved based on the reduction of the sound pressure level in the sound bands of 2 kHz to 5 kHz and 7 kHz to 12 kHz generated by the second coupling member 230.

[0102] Although the support member 300 is described as being part of the sound output device, the present disclosure is not limited thereto, and the support member may be a separate member. For example, interior materials of a vehicle may include all parts constituting the interior of the vehicle, or may include all parts disposed in the interior space of the vehicle, which will be described below.

[0103] Figure 3 is a perspective view showing a vibration member according to an embodiment of the present disclosure. Figure 3 is a view showing an embodiment according to the present disclosure Figure 2 of the vibration member shown in

[0104] Referring to Figure 2 and Figure 3, according to an embodiment of the present disclosure, the vibration member 100 may include a diaphragm 110. The diaphragm 110 may include a pattern portion 115. The pattern portion 115 may be disposed on the front surface of the diaphragm 110. For example, the pattern portion 115 may include a first pattern portion 115A disposed on the front surface of the diaphragm 110. Alternatively, the pattern portion 115 may be disposed on the rear surface of the diaphragm 110 or penetrate the diaphragm 110. The first pattern portion 115A may be a three-dimensional (3D) pattern having a honeycomb structure. For example, the first pattern portion 115A may have a certain thickness. For example, the first pattern portion 115A may include a plurality of holes 111a arranged in parallel. For example, the diaphragm 110 may have a honeycomb structure based on the plurality of holes 111a. For example, each of the plurality of holes 111a may have a hexagonal shape. For example, each of the plurality of holes 111a may be an empty space, which is hollow. Although each of the plurality of holes 111a is a through hole as shown in Figure 3 , it may be a blind hole provided on either surface of the diaphragm 110.

[0105] According to an embodiment of the present disclosure, the diaphragm 110 may include a first surface 110a and a second surface 110b. The vibration device 500 may be coupled to the first surface 110a of the diaphragm 110. The diaphragm 110 may include a metallic material, which includes aluminum (Al). For example, the diaphragm 110 may include a metallic material and a plastic material. For example, the metallic material of the diaphragm 110 may include one or more materials, such as stainless steel, aluminum (Al), aluminum (Al) alloy, magnesium (Mg), magnesium (Mg) alloy, copper (Cu) alloy, magnesium-lithium (Mg-Li) alloy, etc., but the embodiments of the present disclosure are not limited thereto. For example, the diaphragm 110 may be configured to include or include a plastic material, such as plastic or styrene material, but the embodiments of the present disclosure are not limited thereto. For example, the plastic material of the diaphragm 110 may include polycarbonate, polyethylene terephthalate, polyarylate, polyethylene naphthalate, polysulfone, polyethersulfone, cycloolefin copolymer, etc., but the embodiments of the present disclosure are not limited thereto. For example, the styrene material may be an ABS material. The ABS material may be acrylonitrile, butadiene, and styrene. For example, the diaphragm 110 may be manufactured by using a laser process, a chemical etching process, or a computer numerical control (CNC) process. For example, the diameter, shape, and size of each of the plurality of holes 111a may be set differently based on the stiffness and density of the diaphragm 110.

[0106] According to an embodiment of the present disclosure, the vibration member 100 may include a diaphragm 110 provided with a pattern portion 115, so that flexibility in the first direction (or X-axis direction) and the second direction (or Y-axis direction) can be enhanced and elasticity in the third direction (or Z-axis direction) can be enhanced. Therefore, the sound output device according to an embodiment of the present disclosure can increase the vibration width (or displacement width) of the vibration member 100 and can enhance the sound quality characteristics and / or sound pressure level characteristics of the sound output device. In addition, the diaphragm 110 may include a first pattern portion 115A configured with a plurality of holes 111a, so that the weight of the vibration member 110 can be reduced.

[0107] As another example, each of the plurality of holes 111a may be filled with resin or contain resin. For example, resin may be filled in each of the plurality of holes 111a. For example, the resin may include epoxy resin, acrylic resin, silicone resin, polycarbonate resin, or polyurethane resin, but the embodiments of the present disclosure are not limited thereto. For example, in the case where resin is filled in each of the plurality of holes 111a, the vibration device 500 and the vibration member 100 can be connected to each other by a process of curing the resin without a separate connecting member 400. For example, in the case where resin is filled in each of the plurality of holes 111a, the configuration of the connecting member 400 provided between the vibration device 500 and the vibration member 100 to connect the vibration device 500 to the vibration member 100 can be omitted. However, the embodiments of the present disclosure are not limited thereto.

[0108] As another example, the pattern portion 115 may be configured in a partial area of the diaphragm 110. For example, the pattern portion 115 may be configured in a part of the central area of the diaphragm 110. For example, the pattern portion 115 may be configured in other areas of the diaphragm 110 except the edge. For example, the pattern portion 115 may be configured in the peripheral area and / or within the partial area of the diaphragm 110 that overlaps with the vibration device 500.

[0109] According to an embodiment of the present disclosure, since the sound output device includes the vibration member 100 including the pattern portion 115, the vibration width (or displacement width or driving width) of the vibration member 100 can be increased, so that the sound quality characteristics and / or sound pressure level characteristics of the sound device can be enhanced.

[0110] Figure 4 is an exploded perspective view showing a vibration member according to another embodiment of the present disclosure. Figure 4 is a view showing another embodiment according to the present disclosure Figure 2 of the exploded perspective view of the vibration member shown in. Except that a protection member and an adhesive member are additionally configured, Figure 4Another embodiment of the present disclosure shown in [reference] may be substantially the same as an embodiment of the present disclosure. Therefore, hereinafter, only different elements will be described.

[0111] Referring to Figures 2 to 4 , a vibration member 100 according to another embodiment of the present disclosure may include a diaphragm 110, a protection member 180, and an adhesive member 170. Figure 4 The diaphragm 110 according to another embodiment of the present disclosure shown in [reference] may be configured to be substantially the same as an embodiment of the present disclosure described above with reference to Figure 3 .

[0112] According to another embodiment of the present disclosure, the protection member 180 may include a first protection member 181 and a second protection member 182.

[0113] The first protection member 181 may be disposed at a first surface 110a of the diaphragm 110. The first protection member 181 may be attached to the first surface 110a of the diaphragm 110 by using a first adhesive member 171. The first protection member 181 may be configured to cover a pattern portion 115 of the diaphragm 110. The first protection member 181 may protect the first surface 110a of the diaphragm 110. The first protection member 181 may protect the pattern portion 115 of the diaphragm 110.

[0114] The second protection member 182 may be disposed at a second surface 110b of the diaphragm 110 opposite to the first surface 110a. The second protection member 182 may be attached to the second surface 110b of the diaphragm 110 by using a second adhesive member 172. The second protection member 182 may be configured to cover a pattern portion 115 of the diaphragm 110. The second protection member 182 may protect the second surface 110b of the diaphragm 110. The second protection member 182 may protect the pattern portion 115 of the diaphragm 110.

[0115] The first protection member 181 and the second protection member 182 may include the same or different materials from each other. For example, the first protection member 181 and the second protection member 182 may include one of polyimide, polyethylene terephthalate, polypropylene, polyethylene, and thermoplastic polyurethane (TPU), but the embodiments of the present disclosure are not limited thereto.

[0116] According to another embodiment of the present disclosure, the adhesive member 170 may include a first adhesive member 171 and a second adhesive member 172.

[0117] The first adhesive member 171 may be disposed between the first surface 110a of the diaphragm 110 and the first protection member 181. The first adhesive member 171 may connect or attach the first surface 110a of the diaphragm 110 to the first protection member 181.

[0118] The second bonding member 172 may be disposed between the second surface 110b of the diaphragm 110 and the second protection member 182. The second bonding member 172 may connect or attach the second surface 110b of the diaphragm 110 to the second protection member 182.

[0119] For example, the bonding member 170 may include a foam pad, a double-sided tape, a double-sided foam pad, a double-sided foam tape, an adhesive, a double-sided adhesive, a double-sided adhesive tape, a double-sided adhesive foam pad, or an adhesive sheet, but embodiments of the present disclosure are not limited thereto. For example, when the bonding member 170 includes an adhesive sheet (or an adhesive layer), the bonding member 170 may include only the adhesive layer or the adhesive layer without including a base member such as a plastic material. For example, the adhesive layer of the bonding member 170 may include an adhesive material such as a pressure-sensitive adhesive (PSA), an optically clear adhesive (OCA), an optically clear resin (OCR), an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but embodiments of the present disclosure are not limited thereto. For example, according to an embodiment of the present disclosure, when each of the plurality of holes 111a is filled with a resin, the bonding member 170 may include the same material as the resin, but embodiments of the present disclosure are not limited thereto.

[0120] Figure 5 is a perspective view showing a vibration member according to another embodiment of the present disclosure. Figure 6 is a cross-sectional view taken along line II-II' shown in Figure 5 according to an embodiment of the present disclosure.

[0121] Referring to Figure 5 and Figure 6 , a vibration member 100 according to another embodiment of the present disclosure may include a diaphragm 110. For example, the diaphragm 110 may include a first region A1, a second region A2, and a third region A3.

[0122] The first region A1 may be disposed at the center or middle of the diaphragm 110. The vibration device 500 may be connected to the first region A1 of the diaphragm 110. For example, the first region A1 may have a plate shape with a uniform thickness. The first region A1 may be a central region or a middle region of the diaphragm 100. For example, the first region A1 may include a protruding portion 110A that protrudes more than the second region A2 and the third region A3. Based on the protruding portion 110A, the thickness of the first region A1 may be thicker than the thickness of each of the second region A2 and the third region A3. Figure 6 Only the protruding portion 110A is shown protruding at the first surface 110a of the diaphragm 110, but the present disclosure is not limited thereto, and the protruding portion 110A may protrude at the second surface 110b of the diaphragm 110 or at both surfaces of the diaphragm 110.

[0123] The second region A2 can surround the first region A1. The second region A2 can be spaced apart from the first region A1 by a certain distance. For example, the second region A2 can be the outermost region or the outermost edge region of the diaphragm 110. For example, based on the protruding portion 110A disposed within the first region A1, the second region A2 can have a thickness different from that of the first region A1. For example, the thickness of the second region A2 can be thinner than the thickness of the first region A1. For example, the second region A2 can have a thickness within the range of 30% to 35% of the thickness of the first region A1, but embodiments of the present disclosure are not limited thereto. For example, when the thickness of the second region A2 is 1 mm, the thickness of the first region A1 can be 3 mm, but embodiments of the present disclosure are not limited thereto.

[0124] The third region A3 can be disposed between the first region A1 and the second region A2. The third region A3 can connect the first region A1 to the second region A2. The third region A3 can be disposed at the periphery of the first region A1. The third region A3 can be configured to surround the first region A1. For example, the third region A3 can be an outer region, an outer edge region, or an outer boundary region of the first region A1. For example, the third region A3 can be disposed inward from the second region A2. For example, the third region A3 can be an inner region or an inner boundary region of the second region A2. The thickness of the third region A3 can be thinner than the thickness of the first region A1. For example, the third region A3 can have a thickness within the range of 30% to 35% of the thickness of the first region A1, but embodiments of the present disclosure are not limited thereto. For example, when the thickness of the third region A3 is 1 mm, the thickness of the first region A1 can be 3 mm, but embodiments of the present disclosure are not limited thereto. For example, the thickness of the third region A3 can be the same as the thickness of the second region A2. However, embodiments of the present disclosure are not limited thereto.

[0125] The diaphragm 110 according to another embodiment of the present disclosure can include a pattern portion 115. The pattern portion 115 can be disposed at the first surface 110a of the diaphragm 110. The pattern portion 115 can be disposed at the first surface 110a of the diaphragm 110 that is connected to the vibration device 500. Alternatively, the pattern portion 115 can be disposed at the second surface 110b of the diaphragm 110 opposite to the first surface 110a, or the pattern portion 115 can be disposed at both the first surface 110a and the second surface 110b. The pattern portion 115 can be disposed within a partial region of the diaphragm 110. For example, the pattern portion 115 can be disposed within the third region A3 of the diaphragm 110. The pattern portion 115 can be disposed between the first region A1 and the second region A2 of the diaphragm 110.

[0126] According to another embodiment of the present disclosure, the pattern portion 115 may include a plurality of grooves 111g. The pattern portion 115 may include a plurality of protruding patterns 111S protruding from the side surface of the protruding portion 110A toward the third region A3. The pattern portion 115 may include a second pattern portion 115B. The second pattern portion 115B may include a plurality of protruding patterns 111S protruding from the side surface of the protruding portion 110A toward the third region A3. For example, each of the plurality of grooves 111g may be disposed between the plurality of protruding patterns 111S. For example, each of the plurality of grooves 111g may be an empty space or filled with resin. For example, the height of each of the plurality of protruding patterns 111S may decrease from the first region A1 toward the second region A2. For example, the plurality of protruding patterns 111S of the second pattern portion 115B may include a plurality of three-dimensional (3D) patterns. Accordingly, the plurality of protruding patterns including the plurality of 3D patterns may be disposed at a portion where division vibration is generated, so that the sound quality characteristics and / or sound characteristics of the sound output device may be further enhanced. The plurality of protruding patterns 111S may be arranged at a certain distance from each other. Each of the plurality of protruding patterns 111S may include a cross section having a triangular shape. However, embodiments of the present disclosure are not limited thereto.

[0127] According to another embodiment of the present disclosure, the diaphragm 110 may include a plastic material. For example, the diaphragm 110 may include polypropylene, polycarbonate, polyethylene terephthalate, polyarylate, polyethylene naphthalate, polysulfone, polyethersulfone, cycloolefin copolymer, etc., but embodiments of the present disclosure are not limited thereto. For example, the styrene material may be an ABS material. The ABS material may be acrylonitrile, butadiene, and styrene. For example, the diaphragm 110 may be manufactured by using injection, extrusion, or computer numerical control (CNC) processes. For example, when processing the diaphragm 110, the pattern portion 115 may be integrated and disposed within the third region A3 without an additional process.

[0128] For example, in a graph showing the sound pressure level with respect to frequency, when a large peak appears at a specific frequency, a large valley may appear subsequently. This may be because resonance and anti-resonance occur in the diaphragm 110 at the specific frequency. For example, resonance may cause unique vibrations based on an externally applied pulse, and anti-resonance may minimize vibrations at a specific frequency. For example, when a large peak appears at a specific frequency, the sound pressure level may increase, but due to the large valley that appears subsequently, the flatness of the sound pressure level curve may decrease, and the average sound pressure level may decrease.

[0129] Since the vibration member 100 including the pattern portion 115 according to another embodiment of the present disclosure is configured, the difference between resonance and anti-resonance occurring in the vibration plate 110 can be minimized at a specific frequency, so that the flatness of the sound pressure level can be increased. Therefore, the vibration device according to an embodiment of the present disclosure can enhance the sound quality characteristics and / or sound characteristics. According to another embodiment of the present disclosure, a plurality of protruding patterns 111S including a plurality of 3D patterns can be arranged at a portion where split vibration occurs in the vibration device, so that the sound quality characteristics and / or sound characteristics of the sound output device can be further enhanced.

[0130] Figure 7 is a cross-sectional view taken along line II-II' shown in Figure 5 In addition to additionally configuring a protection member and an adhesion member, Figure 7 Another embodiment of the present disclosure shown in Figure 6 can be substantially the same as another embodiment of the present disclosure described above with reference to

[0131] Referring to Figure 5 and Figure 7 , the vibration member 100 according to another embodiment of the present disclosure may include a vibration plate 110, a protection member 180, and an adhesion member 170. Figure 7 The vibration plate 110 according to another embodiment of the present disclosure shown in Figure 6 can be configured to be substantially the same as an embodiment of the present disclosure described above with reference to

[0132] According to another embodiment of the present disclosure, the protection member 180 may include a first protection member 181 and a second protection member 182.

[0133] The first protective member 181 may be disposed at the first surface 110a of the diaphragm 110. The first protective member 181 may be attached to the first surface 110a of the diaphragm 110 by using the first adhesive member 171. For example, the first protective member 181 may be disposed within the first region A1 of the diaphragm 110. For example, the first protective member 181 may overlap with the first region A1 of the diaphragm 110. For example, the first protective member 181 may be connected to the first region A1 of the diaphragm 110 by the first adhesive member 171. For example, the first protective member 181 may not be disposed within the second region A2 and the third region A3 of the diaphragm 110. For example, the first protective member 181 may not overlap with the second region A2 and the third region A3 of the diaphragm 110. For example, the first protective member 181 may protect the first surface 110a of the diaphragm 110. For example, the first protective member 181 may protect the first region A1 of the diaphragm 110. The vibration device 500 may be coupled or connected to the first protective member 181 by using the connecting member 400.

[0134] The second protective member 182 may be disposed at a second surface 110b of the diaphragm 110 different from the first surface 110a. The second protective member 182 may be attached to the second surface 110b of the diaphragm 110 by the second adhesive member 172. The second protective member 182 may be configured to cover the second surface 110b of the diaphragm 110. The second protective member 182 may protect the second surface 110b of the diaphragm 110.

[0135] The first protective member 181 and the second protective member 182 may include the same material or different materials. For example, each of the first protective member 181 and the second protective member 182 may be a polyimide film or a polyethylene terephthalate film, but the embodiments of the present disclosure are not limited thereto.

[0136] The adhesive member 170 may include the first adhesive member 171 and the second adhesive member 172.

[0137] According to another embodiment of the present disclosure, the first adhesive member 171 may be disposed between the first surface 110a of the diaphragm 110 and the first protective member 181. The first adhesive member 171 may connect or attach the first surface 110a of the diaphragm 110 to the first protective member 181. For example, the first adhesive member 171 may be disposed within the first region A1 of the diaphragm 110. For example, the first adhesive member 171 may overlap with the first region A1 of the diaphragm 110. For example, the first adhesive member 171 may not be disposed within the second region A2 and the third region A3 of the diaphragm 110. For example, the first adhesive member 171 may not overlap with the second region A2 and the third region A3 of the diaphragm 110.

[0138] The second bonding member 172 may be configured between the second surface 110b of the diaphragm 110 and the second protective member 182. The second bonding member 172 may connect or attach the second surface 110b of the diaphragm 110 to the second protective member 182. For example, the bonding member 170 may include a foam pad, a double-sided tape, a double-sided foam pad, a double-sided foam tape, an adhesive, a double-sided adhesive, a double-sided adhesive tape, a double-sided adhesive foam pad, or an adhesive sheet, but embodiments of the present disclosure are not limited thereto. For example, when the bonding member 170 includes an adhesive sheet (or an adhesive layer), the bonding member 170 may include only the adhesive layer or the viscous layer without including a base member such as a plastic material. For example, the adhesive layer of the bonding member 170 may include an adhesive material such as PSA, OCA, OCR, an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but embodiments of the present disclosure are not limited thereto.

[0139] Figure 7 The sound output device according to another embodiment of the present disclosure shown may have the same effects as the sound output device described above with reference to Figure 6 In addition, according to another embodiment of the present disclosure, since the vibration member 100 includes the protective member 180 and the bonding member 170, the sound output device may protect the diaphragm 110 and may improve the flatness of the sound pressure level. For example, the bonding member 170 may have high damping characteristics. For example, damping may represent an operation of preventing the diaphragm 110 from moving excessively with respect to a signal when the signal is applied to the diaphragm 110. For example, high damping characteristics may represent a relatively high characteristic of preventing the diaphragm 110 from moving excessively with respect to a signal. Therefore, due to the configuration of the sound output device, the sound output device may protect the diaphragm 110 and may improve the peaks and valleys of the sound pressure level curve of the sound output device, thereby improving the flatness of the sound pressure level of the sound output device.

[0140] Figure 8 is a perspective view showing a vibration member according to another embodiment of the present disclosure. Figure 9 is a cross-sectional view taken along line III-III' shown in Figure 8 According to an embodiment of the present disclosure, except that a first pattern portion is additionally disposed in the first region of the diaphragm, Figure 8 and Figure 9 Another embodiment of the present disclosure shown may be substantially the same as another embodiment of the present disclosure described above with reference to Figure 5 and Figure 6 Therefore, only the different elements will be described below.

[0141] Referring to Figure 8 and Figure 9, according to another embodiment of the present disclosure, the vibration member 100 may include a diaphragm 110. The diaphragm 110 may include a first region A1, a second region A2, and a third region A3. The diaphragm 110 may include a pattern portion 115. The pattern portion 115 may include a first pattern portion 115A and a second pattern portion 115B. For example, a plurality of holes 111a may be disposed in the first pattern portion 115A, and a plurality of grooves 111g may be disposed in the second pattern portion 115B. The second pattern portion 115B may have a configuration substantially the same as that of the pattern portion 115 according to another embodiment of the present disclosure described above with reference to Figure 5 and Figure 6 , so the first pattern portion 115A will be described.

[0142] According to another embodiment of the present disclosure, the first pattern portion 115A may be disposed within the first region A1 of the diaphragm 110. The first pattern portion 115A may be disposed within the central region or the intermediate region of the diaphragm 110. The first pattern portion 115A may overlap with the vibration device 500. For example, the first pattern portion 115A may not be disposed within the second region A2 and the third region A3 of the diaphragm 110. However, the embodiments of the present disclosure are not limited thereto. For example, the first pattern portion 115A may be additionally disposed within the third region A3 of the diaphragm 110.

[0143] The first pattern portion 115A may have a honeycomb structure based on the plurality of holes 111a. For example, each of the plurality of holes 111a may have a hexagonal shape. For example, each of the plurality of holes 111a may be an empty space, which is hollow. Although each of the plurality of holes 111a is a through hole as Figure 9 shown, it may be a blind hole provided on either surface of the diaphragm 110. The vibration device 500 may be coupled to the first surface 110a of the diaphragm 110.

[0144] According to another embodiment of the present disclosure, the vibration member 100 may include a diaphragm 110 configured with a pattern portion 115, so the flexibility in the first direction (or X-axis direction) and the second direction (or Y-axis direction) can be enhanced, and the elasticity in the third direction (or Z-axis direction) can be enhanced. Therefore, according to an embodiment of the present disclosure, the sound output device can increase the vibration width (or displacement width) of the vibration member 100, and can enhance the sound quality characteristics and / or sound pressure level characteristics of the sound output device. In addition, the diaphragm 110 may include a first pattern portion 115A configured with a plurality of holes 111a, so the weight of the vibration member 110 can be reduced.

[0145] As another example, each of the plurality of holes 111a may be filled with or accommodate resin. For example, resin may be filled in each of the plurality of holes 111a. For example, the resin may include epoxy resin, acrylic resin, silicone resin, polycarbonate resin, or polyurethane resin, but embodiments of the present disclosure are not limited thereto. For example, in the case where resin is filled in each of the plurality of holes 111a, the vibration device 500 and the vibration member 100 may be connected to each other by a process of curing the resin without a separate connecting member 400. For example, in the case where resin is filled in each of the plurality of holes 111a, the configuration of the connecting member 400 provided between the vibration device 500 and the vibration member 100 to connect the vibration device 500 to the vibration member 100 may be omitted. However, embodiments of the present disclosure are not limited thereto.

[0146] According to another embodiment of the present disclosure, since the vibration member 110 includes the first pattern portion 115A and the second pattern portion 115B, the sound quality characteristics and / or sound pressure level characteristics of the sound output device can be further enhanced. According to another embodiment of the present disclosure, resin may be filled in the plurality of holes 111a, and the first protection member 181 may be attached to the second protection member 182, so that split vibration can be attenuated, thereby further improving the sound quality characteristics and / or sound pressure level characteristics of the sound output device.

[0147] Figure 10 is a cross-sectional view taken along line III-III' shown in Figure 8 According to another embodiment of the present disclosure, except that a protection member and an adhesive member are additionally configured, Figure 10 Another embodiment of the present disclosure shown may be substantially the same as one embodiment of the present disclosure described above with reference to Figure 9 Therefore, only different elements will be described hereinafter.

[0148] Referring to Figure 10 , according to another embodiment of the present disclosure, the vibration member 100 may include a diaphragm 110, a protection member 180, and an adhesive member 170. Figure 10 The diaphragm 110 according to another embodiment of the present disclosure shown may be substantially the same as one embodiment of the present disclosure described above with reference to Figure 9 Therefore, only different elements will be described hereinafter. Figure 10 The protection member 180 and the adhesive member 170 according to another embodiment of the present disclosure shown may be substantially the same as the protection member 180 and the adhesive member 170 of one embodiment of the present disclosure described above with reference to Figure 7 Therefore, the same elements will be briefly described hereinafter, and different elements will be described.

[0149] According to another embodiment of the present disclosure, the first protection member 181 may be disposed within the first region A1 of the diaphragm 110. The first protection member 181 may overlap with the first pattern portion 115A disposed within the first region A1 of the diaphragm 110. The first protection member 181 may cover the first pattern portion 115A disposed within the first region A1 of the diaphragm 110. For example, the first protection member 181 may be connected to the first region A1 of the diaphragm 110 by using the first adhesive member 171. For example, the first protection member 181 may be attached to the first pattern portion 115A disposed within the first region A1 of the diaphragm 110 by using the first adhesive member 171. For example, the first protection member 181 may not be disposed within the second region A2 and the third region A3 of the diaphragm 110. For example, the first protection member 181 may not overlap with the second pattern portion 115B disposed within the third region A3 of the diaphragm 110. For example, the first protection member 181 may not contact the second pattern portion 115B disposed within the third region A3 of the diaphragm 110. However, the embodiments of the present disclosure are not limited thereto. The vibration device 500 may be coupled or connected to the first protection member 181 by using the connection member 400 so as to overlap with the first pattern portion 115A.

[0150] According to another embodiment of the present disclosure, the first adhesive member 171 may be disposed between the first surface 110a of the diaphragm 110 and the first protection member 181. For example, the first adhesive member 171 may be disposed within the first region A1 of the diaphragm 110. For example, the first adhesive member 171 may overlap with the first pattern portion 115A disposed within the first region A1 of the diaphragm 110. For example, the first adhesive member 171 may cover the first pattern portion 115A disposed within the first region A1 of the diaphragm 110. For example, the first adhesive member 171 may directly contact the first pattern portion 115A disposed within the first region A1 of the diaphragm 110. For example, the first adhesive member 171 may not be disposed within the second region A2 and the third region A3 of the diaphragm 110. For example, the first adhesive member 171 may not overlap with the second pattern portion 115B disposed within the third region A3 of the diaphragm 110. For example, the first adhesive member 171 may not contact the second pattern portion 115B disposed within the third region A3 of the diaphragm 110. However, the embodiments of the present disclosure are not limited thereto.

[0151] As another example, the first protective member 181 and the first adhesive member 171 may be configured within the entire upper surface (or first surface) of each of the first region A1 to the third region A3 of the diaphragm 110. In this case, the thickness of the first adhesive member 171 overlapping each of the first region A1 to the third region A3 may be adjusted differently, or an adhesive may be additionally disposed within the second region A2 and the third region A3. Thus, the first protective member 181 and the first adhesive member 171 may be attached to the diaphragm 110 without a step height. Similarly, in the embodiment as Figure 7 shown, the first protective member 181 and the first adhesive member 171 may be configured within the entire upper surface (or first surface) of each of the first region A1 to the third region A3 of the diaphragm 110.

[0152] According to another embodiment of the present disclosure, since the vibrating member 110 includes the first pattern portion 115A and the second pattern portion 115B, the sound quality characteristics and / or the sound pressure level characteristics of the sound output device may be further enhanced. Moreover, since the vibrating member 100 includes the protective member 180 and the adhesive member 170, the sound output device may protect the diaphragm 110 and may improve the flatness of the sound pressure level. According to another embodiment of the present disclosure, resin may be filled in the plurality of holes 111a, and the first protective member 181 may be attached to the second protective member 182. Thus, split vibration may be attenuated, thereby further improving the sound quality characteristics.

[0153] Figure 11 is a perspective view showing a vibrating device according to an embodiment of the present disclosure. Figure 12 is a cross-sectional view taken along the line IV-IV′ shown in Figure 11 according to an embodiment of the present disclosure. Figure 13 is a cross-sectional view taken along the line V-V′ shown in Figure 11 according to an embodiment of the present disclosure. Figures 11 to 13 shows an example of the vibrating device or a plurality of vibration generating devices described above with reference to Figure 1 and Figure 2 According to an embodiment of the present disclosure, the vibrating device 500 may include a vibration generating portion 510.

[0154] Referring to Figures 11 to 13 , the vibrating device 500 may include a vibration generating portion 510.

[0155] The vibration generating portion 510 may include a piezoelectric material having piezoelectric properties. The vibration generating portion 510 may be configured as a ceramic-based piezoelectric material for achieving relatively strong vibrations, or may be configured as a piezoelectric ceramic having a perovskite-based crystal structure. For example, the vibration generating portion 510 may be a vibration generating device, a vibrating film, a vibration generating film, a vibrator, a vibration generator, an active vibrator, an active vibration generator, an actuator, an exciter, a thin film actuator, a thin film exciter, an ultrasonic actuator, an active vibration member, etc., but embodiments of the present disclosure are not limited thereto.

[0156] The vibration generating portion 510 according to an embodiment of the present disclosure may include a vibration portion 511.

[0157] The vibration portion 511 may be configured to vibrate in response to a driving signal generated by the piezoelectric effect. The vibration portion 511 may include at least one or more of a piezoelectric inorganic material and a piezoelectric organic material. For example, the vibration portion 511 may be a vibration element, a piezoelectric device, a piezoelectric element, a piezoelectric device portion, a piezoelectric device layer, a piezoelectric structure, a piezoelectric vibration portion, or a piezoelectric vibration layer, but embodiments of the present disclosure are not limited thereto.

[0158] The vibration portion 511 according to an embodiment of the present disclosure may include a vibration layer 511a, a first electrode layer 511b, and a second electrode layer 511c.

[0159] The vibration layer 511a may include a piezoelectric material or an electroactive material having a piezoelectric effect. For example, the piezoelectric material may have such a property that when pressure or a distortion phenomenon is applied to the crystal structure by an external force, a potential difference is generated due to the relative position change of positive (+) ions and negative (-) ions caused by the dielectric polarization, and thus vibrations are generated by an electric field based on the reverse voltage applied thereto. For example, the vibration layer 511a may be a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric composite layer, a piezoelectric composite, or a piezoelectric ceramic composite, etc., but embodiments of the present disclosure are not limited thereto.

[0160] The vibration layer 511a may be configured as a ceramic-based material for achieving relatively strong vibrations (e.g., high amplitude vibrations), or may be configured as a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have a piezoelectric effect and / or an inverse piezoelectric effect, and may be a plate-like structure having an orientation.

[0161] The piezoelectric ceramic can be configured as a single-crystal ceramic having a crystal structure, or can be configured as a ceramic material or polycrystalline ceramic having a polycrystalline structure. The piezoelectric material including the single-crystal ceramic can include α-AlPO4, α-SiO2, LiNbO3, Tb2(MoO4)3, Li2B4O7, or ZnO, but the embodiments of the present disclosure are not limited thereto. The piezoelectric material including the polycrystalline ceramic can include a lead zirconate titanate (PZT)-based material including lead (Pb), zirconium (Zr), and / or titanium (Ti), or can include a lead zirconate nickel niobate (PZNN)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and / or niobium (Nb), but the embodiments of the present disclosure are not limited thereto. For example, the vibrating layer 511a can include at least one or more of calcium titanate (CaTiO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3) and does not contain lead (Pb), but the embodiments of the present disclosure are not limited thereto.

[0162] The first electrode layer 511b can be disposed at the first surface (or upper surface or front surface) 511s1 of the vibrating layer 511a. The first electrode layer 511b can have the same size as the vibrating layer 511a, or can have a size smaller than the size of the vibrating layer 511a.

[0163] The second electrode layer 511c can be disposed at the second surface (or lower surface or rear surface) 511s2 of the vibrating layer 511a that is opposite to or different from the first surface 511s1. The second electrode layer 511c can have the same size as the vibrating layer 511a, or can have a size smaller than the size of the vibrating layer 511a. For example, the second electrode layer 511c can have the same or similar shape as the vibrating layer 511a, but the embodiments of the present disclosure are not limited thereto.

[0164] According to an embodiment of the present disclosure, in order to prevent an electrical short circuit between the first electrode layer 511b and the second electrode layer 511c, each of the first electrode layer 511b and the second electrode layer 511c can be formed at another part of the vibrating layer 511a other than the peripheral portion. For example, the first electrode layer 511b can be formed at the entire first surface 511s1 of the vibrating layer 511a other than the peripheral portion. For example, the second electrode layer 511c can be formed at the entire second surface 511s2 of the vibrating layer 511a other than the peripheral portion. For example, the distance between the side surface (or periphery, perimeter, or sidewall) of each of the first electrode layer 511b and the second electrode layer 511c and the side surface (or periphery, perimeter, or sidewall) of the vibrating layer 511a can be at least 0.5 mm or greater. For example, the distance between the side surface of each of the first electrode layer 511b and the second electrode layer 511c and the side surface of the vibrating layer 511a can be at least 1 mm or greater, but the embodiments of the present disclosure are not limited thereto.

[0165] According to an embodiment of the present disclosure, one or more of the first electrode layer 511b and the second electrode layer 511c may be formed of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the transparent conductive material or the translucent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but the embodiments of the present disclosure are not limited thereto. The opaque conductive material may include gold (Au), silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), carbon, or silver (Ag) including a frit, etc., or may be made of an alloy thereof, but the embodiments of the present disclosure are not limited thereto. For example, in order to enhance the electrical characteristics and / or vibration characteristics of the vibration layer 511a, each of the first electrode layer 511b and the second electrode layer 511c may include silver (Ag) having a low resistivity. For example, carbon may include one or more of carbon black, ketjen black, carbon nanotubes, and carbon materials including graphite, but the embodiments of the present disclosure are not limited thereto.

[0166] The vibration layer 511a may be polarized (or polarized) by applying a certain voltage to the first electrode layer 511b and the second electrode layer 511c in a certain temperature atmosphere, or in a temperature atmosphere that can change from a high temperature to room temperature, but the embodiments of the present disclosure are not limited thereto. For example, the polarization direction (or polarization direction) formed in the vibration layer 511a may be formed or aligned (or arranged) from the first electrode layer 511b to the second electrode layer 511c, but is not limited thereto, and the polarization direction (or polarization direction) formed in the vibration layer 511a may be formed or aligned (or arranged) from the second electrode layer 511c to the first electrode layer 511b.

[0167] The vibration layer 511a may vibrate by alternately repeating contraction and / or expansion due to the inverse piezoelectric effect according to a drive signal applied from the outside to the first electrode layer 511b and the second electrode layer 511c. For example, the vibration layer 511a may vibrate in the vertical direction (or thickness direction) and the plane direction by a signal applied to the first electrode layer 511b and the second electrode layer 511c. The vibration layer 511a may be displaced (or vibrated or driven) by contraction and / or expansion in the plane direction, thereby improving the sound characteristics and / or sound pressure level characteristics of the vibration generating portion 510.

[0168] The vibration generating portion 510 according to an embodiment of the present disclosure may further include a first covering member 513 and a second covering member 515.

[0169] The first covering member 513 may be disposed on the first surface of the vibrating part 511. For example, the first covering member 513 may be configured to cover the first electrode layer 511b of the vibrating part 511. For example, the first covering member 513 may be configured to have a size larger than that of the vibrating part 511. The first covering member 513 may be configured to protect the first surface of the vibrating part 511 and the first electrode layer 511b.

[0170] The second covering member 515 may be disposed on the second surface of the vibrating part 511. For example, the second covering member 515 may be configured to cover the second electrode layer 511c of the vibrating part 511. For example, the second covering member 515 may be configured to have a size larger than that of the vibrating part 511. The second covering member 515 may be configured to protect the second surface of the vibrating part 511 and the second electrode layer 511c.

[0171] According to an embodiment of the present disclosure, each of the first covering member 513 and the second covering member 515 may include the same material or different materials. For example, one or each of the first covering member 513 and the second covering member 515 may be or include a polyimide film or a polyethylene terephthalate film, but the embodiments of the present disclosure are not limited thereto.

[0172] The first covering member 513 may be connected or coupled to the first surface of the vibrating part 511 or the first electrode layer 511b through the first adhesive layer 517. For example, the first covering member 513 may be connected or coupled to the first surface of the vibrating part 511 or the first electrode layer 511b through the first adhesive layer 517 by using a film lamination process.

[0173] The second covering member 515 may be connected or coupled to the second surface of the vibrating part 511 or the second electrode layer 511c through the second adhesive layer 519. For example, the second covering member 515 may be connected or coupled to the second surface of the vibrating part 511 or the second electrode layer 511c through the second adhesive layer 519 by using a film lamination process.

[0174] According to an embodiment of the present disclosure, each of the first adhesive layer 517 and the second adhesive layer 519 may include an electrically insulating material having adhesiveness and capable of compression and decompression. For example, the first adhesive layer 517 and the second adhesive layer 519 may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane resin, but the embodiments of the present disclosure are not limited thereto.

[0175] The first adhesive layer 517 and the second adhesive layer 519 may be disposed between the first covering member 513 and the second covering member 515 so as to surround the vibration part 511. For example, one or more of the first adhesive layer 517 and the second adhesive layer 519 may be configured to surround the vibration part 511.

[0176] The vibration device 500 or the vibration generating part 510 according to an embodiment of the present disclosure may each further include a signal supply member 550.

[0177] The signal supply member 550 may be configured to supply a driving signal provided from the driving circuit part to the vibration part 511. The signal supply member 550 may be configured to be electrically connected to the vibration part 511. The signal supply member 550 may be configured to be electrically connected to the first electrode layer 511b and the second electrode layer 511c.

[0178] A part of the signal supply member 550 may be accommodated (or inserted) between the first covering member 513 and the second covering member 515. An end portion (or a distal end portion or one side or a part) of the signal supply member 550 may be disposed or inserted (or accommodated) between an edge portion (or a peripheral portion) of the first covering member 513 and an edge portion (or a peripheral portion) of the second covering member 515. An edge portion of the first covering member 513 and an edge portion of the second covering member 515 may accommodate or vertically (or up and down) cover the end portion (or the distal end portion or one side or a part) of the signal supply member 550. Accordingly, the signal supply member 550 may be configured (or integrated) with the vibration generating part 510 as one body. For example, the signal supply member 550 may be configured as a signal cable, a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multi-layer printed circuit, or a flexible multi-layer printed circuit board, but the embodiments of the present disclosure are not limited thereto.

[0179] The signal supply member 550 according to an embodiment of the present disclosure may include a base member 551 and a plurality of signal lines. For example, the signal supply member 550 may include a base member 551, a first signal line 553a, and a second signal line 553b.

[0180] The base member 551 may include a transparent or opaque plastic material, but the embodiments of the present disclosure are not limited thereto. The base member 551 may have a certain width in the first direction X and may extend in a second direction Y intersecting the first direction X.

[0181] The first signal line 553a and the second signal line 553b can be disposed on the first surface of the base member 551 parallel to the second direction Y, and can be spaced apart from each other or electrically separated from each other in the first direction X. The first signal line 553a and the second signal line 553b can be disposed parallel to each other on the first surface of the base member 551. For example, the first signal line 553a and the second signal line 553b can be formed into a wire shape by patterning a metal layer (or a conductive layer) formed or deposited on the first surface of the base member 551.

[0182] The ends (or distal ends or one side or a part) of the first signal line 553a and the second signal line 553b can be separated from each other, and thus can be bent or folded individually.

[0183] The end (or distal end or one side or a part) of the first signal line 553a can be electrically connected to the first electrode layer 511b of the vibration part 511. For example, the end of the first signal line 553a can be electrically connected to at least a part of the first electrode layer 511b of the vibration part 511 at or near an edge portion of the first covering member 513. For example, the end (or distal end or one side or a part) of the first signal line 553a can be directly electrically connected to at least a part of the first electrode layer 511b of the vibration part 511. For example, the end (or distal end or one side or a part) of the first signal line 553a can be electrically connected to or directly contact the first electrode layer 511b of the vibration part 511. For example, the end of the first signal line 553a can be electrically connected to the first electrode layer 511b through a conductive double-sided tape. Therefore, the first signal line 553a can be configured to transmit the first drive signal provided from the vibration driver to the first electrode layer 511b of the vibration part 511.

[0184] The end (or distal end or one side or a part) of the second signal line 553b can be electrically connected to the second electrode layer 511c of the vibration part 511. For example, the end of the second signal line 553b can be electrically connected to at least a part of the second electrode layer 511c of the vibration part 511 at an edge portion of the second covering member 515. For example, the end of the second signal line 553b can be directly electrically connected to at least a part of the second electrode layer 511c of the vibration part 511. For example, the end of the second signal line 553b can be electrically connected to or directly contact the second electrode layer 511c of the vibration part 511. For example, the end of the second signal line 553b can be electrically connected to the second electrode layer 511c through a conductive double-sided tape. Therefore, the second signal line 553b can be configured to transmit the second drive signal provided from the vibration driver to the second electrode layer 511c of the vibration part 511.

[0185] The signal supply member 550 according to an embodiment of the present disclosure may further include an insulating layer 555.

[0186] The insulating layer 555 may be disposed on the first surface of the base member 551 so as to cover each of the first signal line 553a and the second signal line 553b (except for the end portion (or one side or a part) of the signal supply member 550).

[0187] The end portion (or one side or a part) of the signal supply member 550 including the end portion (or one side or a part) of the base member 551 and the end portion (or one side or a part) of the insulating layer 555 may be inserted (or received) between the first covering member 513 and the second covering member 515 and may be fixed between the first covering member 513 and the second covering member 515 by the first adhesive layer 517 and the second adhesive layer 519. Accordingly, the end portion (or one side or a part) of the first signal line 553a may remain electrically connected to the first electrode layer 511b of the vibrating portion 511, and the end portion (or one side or a part) of the second signal line 553b may remain electrically connected to the second electrode layer 511c of the vibrating portion 511. In addition, the end portion (or one side or a part) of the signal supply member 550 may be inserted (or received) and fixed between the vibrating portion 511 and the first covering member 513, and thus, contact defects between the vibration generating portion 510 and the signal supply member 550 due to the movement of the signal supply member 550 may be prevented. Alternatively, the end portion (or one side or a part) of the signal supply member 550 may be inserted (or received) and fixed between the vibrating portion 511 and the second covering member 515.

[0188] In the signal supply member 550 according to an embodiment of the present disclosure, each of the end portion (or one side or a part) of the base member 551 and the end portion (or one side or a part) of the insulating layer 555 may be provided at a certain distance from the end of the signal line. For example, each of the end portions of the first signal line 553a and the second signal line 553b may be exposed to the outside (e.g., near the end of the vibrating portion 511) without being supported or covered by the end portion (or one side) of the base member 551 and the end portion (or one side or a part) of the insulating layer 555, respectively. For example, the end portion of each of the first signal line 553a and the second signal line 553b may protrude (or extend) a certain length from the end portion 551e of the base member 551 or the end portion 555e of the insulating layer 555. Accordingly, the end portion (or the distal end portion or one side or a part) of each of the first signal line 553a and the second signal line 553b may be bent (or folded) independently of the base member 551 and the insulating layer 555.

[0189] The end portion (or one side or a part) of the first signal line 553a that is not supported by the end portion (or one side or a part) of the base member 551 and the end portion of the insulating layer 555 may be directly connected to or directly contact the first electrode layer 511b of the vibrating portion 511. The end portion (or one side or a part) of the second signal line 553b that is not supported by the end portion (or one side or a part) of the base member 551 and the end portion of the insulating layer 555 may be directly connected to or directly contact the second electrode layer 511c of the vibrating portion 511.

[0190] According to an embodiment of the present disclosure, a part of the signal supply member 550 or a part of the base member 551 may be disposed or inserted (or accommodated) between the first covering member 513 and the second covering member 515. Thus, the signal supply member 550 may be configured (or integrated) with the vibration generating portion 510 as one body. Accordingly, the vibration generating portion 510 and the signal supply member 550 may be configured as one part (or one element or one component), and thus, the effect of uni - materialization can be obtained. For example, a single component can be obtained, and then it can be easily and efficiently mounted in a sound output device according to an embodiment of the present disclosure.

[0191] According to an embodiment of the present disclosure, the first signal line 553a and the second signal line 553b of the signal supply member 550 may be configured (or integrated) with the vibration generating portion 510 as one body. Thus, a soldering process for the electrical connection between the vibration generating portion 510 and the signal supply member 550 may not be required. Accordingly, the manufacturing process and structure of the vibration device 500 can be simplified, thereby avoiding the costs, time, and risks associated with the soldering process.

[0192] Figure 14 is a perspective view showing a vibration layer according to another embodiment of the present disclosure. Figure 14 shows the above - referred - to Figures 11 to 13 another example of the vibration layer (e.g., 511a) described.

[0193] Referring to Figure 11 and Figure 14 According to another embodiment of the present disclosure, the vibration layer 511a 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 (e.g., the X - direction) or the second direction Y (e.g., the Y - direction).

[0194] Each of the plurality of first portions 511a1 may include an inorganic material portion having a piezoelectric effect (or piezoelectric property). For example, each of the plurality of first portions 511a1 may include at least one or more of a piezoelectric inorganic material and a piezoelectric organic material. For example, each of the plurality of first portions 511a1 may be an inorganic portion, an inorganic material portion, a piezoelectric portion, a piezoelectric material portion, or an electroactive portion, but embodiments of the present disclosure are not limited thereto.

[0195] According to an embodiment of the present disclosure, each of the plurality of first portions 511a1 may have a first width W1 parallel to the first direction X (or the second direction Y) and may extend along the second direction Y (or the first direction X). Each of the plurality of first portions 511a1 may include a material substantially the same as the vibration layer 511a described above with reference to Figures 4 to 6 Therefore, its repeated description may be omitted or briefly discussed.

[0196] Each of the plurality of second portions 511a2 may be disposed between the plurality of first portions 511a1. For example, each of the plurality of first portions 511a1 may be disposed between two adjacent second portions 511a2 of the plurality of second portions 511a2. Each of the plurality of second portions 511a2 may have a second width W2 parallel to the first direction X (or the second direction Y) and may extend along the second direction Y (or the first direction X). The first width W1 may be the same as or different from the second width W2. For example, the first width W1 may be greater than the second width W2. For example, the first portion 511a1 and the second portion 511a2 may include a wire shape or a stripe shape having the same size or different sizes.

[0197] Each of the plurality of second portions 511a2 may be configured to fill a gap between two adjacent first portions of the plurality of first portions 511a1, and thus may be connected or attached to a side surface of an adjacent first portion 511a1. According to an embodiment of the present disclosure, each of the plurality of first portions 511a1 and the plurality of second portions 511a2 may be disposed (or arranged) parallel to each other in the same plane (or the same layer). Therefore, the vibration layer 511a can be extended to a desired size or length by lateral coupling (or connection) of the first portion 511a1 and the second portion 511a2.

[0198] According to an embodiment of the present disclosure, each of the plurality of second portions 511a2 may absorb an impact applied to the first portion 511a1, thereby enhancing the overall durability of the first portion 511a1 and providing flexibility to the vibration layer 511a. Each of the plurality of second portions 511a2 may include an organic material having ductility (e.g., soft and / or elastic) properties. For example, each of the plurality of second portions 511a2 may include one or more of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but embodiments of the present disclosure are not limited thereto. For example, each of the plurality of second portions 511a2 may be an organic portion, an organic material portion, an adhesive portion, a stretching portion, a bending portion, a damping portion, or a ductility (e.g., soft and / or elastic) portion, but embodiments of the present disclosure are not limited thereto.

[0199] A first surface of each of the plurality of first portions 511a1 and the plurality of second portions 511a2 may be commonly connected to the first electrode layer 511b. A second surface of each of the plurality of first portions 511a1 and the plurality of second portions 511a2 may be commonly connected to the second electrode layer 511c.

[0200] The plurality of first portions 511a1 and the plurality of second portions 511a2 may be disposed on the same plane (or connected to the same plane). Thus, the vibration layer 511a according to another embodiment of the present disclosure may have a single thin film type. Thus, the vibration portion 511 or the vibration generating portion 510 including the vibration layer 511a according to another embodiment of the present disclosure may vibrate through the first portion 511a1 having vibration characteristics and may be bent into a curved shape by the second portion 511a2 having flexibility.

[0201] Figure 15 is a perspective view showing a vibration layer according to another embodiment of the present disclosure. Figure 15 is shown above with reference to Figures 11 to 13 Another example of the vibration layer (e.g., 511a) described above.

[0202] With reference to Figure 11 and Figure 15 According to another embodiment of the present disclosure, the vibration layer 511a may include a plurality of first portions 511a3 and second portions 511a4 disposed between the plurality of first portions 511a3.

[0203] Each of the plurality of first portions 511a3 may be set to be spaced apart from each other along each of a first direction X and a second direction Y. For example, each of the plurality of first portions 511a3 may have a hexahedral shape (e.g., a cubic shape) of the same size and may be set in a lattice shape, but embodiments of the present disclosure are not limited thereto. For example, each of the plurality of first portions 511a3 may have a circular plate, an oval plate, or a polygonal plate having the same size as each other, but embodiments of the present disclosure are not limited thereto.

[0204] Each of the plurality of first portions 511a3 is substantially the same as the first portion 511a1 described above with reference to Figure 14 Accordingly, a repetitive description thereof will be omitted or may be briefly discussed.

[0205] The second portion 511a4 may be disposed between the plurality of first portions 511a3 along each of the first direction X and the second direction Y. The second portion 511a4 may be configured to fill a gap between two adjacent first portions 511a3 or surround each of the plurality of first portions 511a3. Accordingly, the second portion 511a4 may be connected or attached to an adjacent first portion 511a3. The second portion 511a4 is substantially the same as the second portion 511a2 described above with reference to Figure 14 Accordingly, a repetitive description thereof will be omitted or may be briefly discussed.

[0206] A first surface of each of the plurality of first portions 511a3 and the second portion 511a4 may be commonly connected to a first electrode layer 511b. A second surface of each of the plurality of first portions 511a3 and the second portion 511a4 may be commonly connected to a second electrode layer 511c.

[0207] The plurality of first portions 511a3 and the second portion 511a4 may be disposed on the same plane (or connected to the same plane). Accordingly, the vibration layer 511a according to another embodiment of the present disclosure may have a single thin film type. Accordingly, the vibration part 511 or the vibration generating part 510 including the vibration layer 511a according to another embodiment of the present disclosure may vibrate through the first portion 511a3 having vibration characteristics and may be bent into a curved shape through the second portion 511a4 having flexibility.

[0208] Figure 16 is an exploded perspective view showing a vibration device according to another embodiment of the present disclosure. Figure 16 shows the vibration device described above with reference to Figure 1 and Figure 2 described vibration device.

[0209] Refer to Figure 2 and Figure 16, The vibration device 500 according to another embodiment of the present disclosure may include two or more vibration generating portions. For example, the vibration device 500 may include a first vibration generating portion 510-1 and a second vibration generating portion 510-2.

[0210] The first vibration generating portion 510-1 and the second vibration generating portion 510-2 may overlap or stack so as to be displaced (or driven or vibrated) in the same direction, thereby maximizing the amplitude displacement of the vibration device 500 and / or the amplitude displacement of the vibration member. For example, the first vibration generating portion 510-1 and the second vibration generating portion 510-2 may have substantially the same dimensions, but the embodiments of the present disclosure are not limited thereto. For example, the first vibration generating portion 510-1 and the second vibration generating portion 510-2 may have the same dimensions (within the error range of the manufacturing process). Therefore, the first vibration generating portion 510-1 and the second vibration generating portion 510-2 may maximize the amplitude displacement of the vibration device 500 and / or the amplitude displacement of the vibration member.

[0211] According to an embodiment of the present disclosure, one of the first vibration generating portion 510-1 and the second vibration generating portion 510-2 may be Figure 2 connected or coupled to the vibration member 100 by the connecting member 400 shown in. For example, the first vibration generating portion 510-1 may be connected or coupled to the vibration member 100 by the connecting member 400.

[0212] Each of the first vibration generating portion 510-1 and the second vibration generating portion 510-2 may be the same as or substantially the same as the vibration generating portion 510 described above with reference to Figures 11 to 13 Therefore, the same reference numerals may refer to the same elements, and the repeated description thereof may be omitted.

[0213] Figure 16 The vibration device 500 according to another embodiment of the present disclosure shown may further include an intermediate member 510M.

[0214] The intermediate member 510M may be disposed or connected between the first vibration generating portion 510-1 and the second vibration generating portion 510-2. For example, the intermediate member 510M may be disposed or connected between the second covering member 515 of the first vibration generating portion 510-1 and the first covering member 513 of the second vibration generating portion 510-2. For example, the intermediate member 510M may be an adhesive member or a connecting member, but the embodiments of the present disclosure are not limited thereto.

[0215] The intermediate member 510M according to an embodiment of the present disclosure may include a material including an adhesive layer, where the adhesive layer has good adhesion or attachment force with respect to the first vibration generating portion 510-1 and the second vibration generating portion 510-2. For example, the intermediate member 510M may include a foam pad, a double-sided tape, a double-sided foam tape, a double-sided foam pad, or an adhesive, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the intermediate member 510M may include an epoxy resin, an acrylic resin, a silicone resin, or a polyurethane, but the embodiments of the present disclosure are not limited thereto. For example, the adhesive layer of the intermediate member 510M may include a polyurethane-based material (or substance) having relatively ductile characteristics. Therefore, the vibration loss caused by the displacement interference between the first vibration generating portion 510-1 and the second vibration generating portion 510-2 can be minimized, or each of the first vibration generating portion 510-1 and the second vibration generating portion 510-2 can be freely displaced (or vibrated or driven).

[0216] According to another embodiment of the present disclosure, since the vibration device 500 according to another embodiment of the present disclosure includes the first vibration generating portion 510-1 and the second vibration generating portion 510-2 that are stacked (or superposed or overlapped) so as to vibrate (or be displaced or driven) in the same direction, the displacement amount or the amplitude displacement can be maximized or increased. Therefore, the displacement amount (or bending force or driving force) or the amplitude displacement of the vibration member can be maximized or increased.

[0217] Figure 17 It is a graph showing the sound pressure level characteristics of the sound output device according to the experimental example and the embodiment of the present disclosure.

[0218] The inventors have prepared Experimental Example 1, Embodiment 1, and Embodiment 2 as samples to compare the sound pressure levels of the sound output devices according to the embodiments of the present disclosure. Experimental Example 1 was prepared by connecting a vibration device to a vibration member including aluminum and having no patterned portion. Embodiment 1 is the sound output device according to an embodiment of the present disclosure described above with reference to Figure 2 and Figure 3 and the sample was prepared by connecting the vibration device to a vibration member configured with a patterned portion. Embodiment 2 is the one described above with reference to Figure 2 and Figure 4A sound output device according to an embodiment of the present disclosure, and a sample is prepared by coupling a vibration device to a vibration member configured with a pattern portion, a protection member, and a coupling member. The vibration members of Example 1 and Example 2 include aluminum. The sound output characteristics of the sound output device with respect to frequency have been measured in an anechoic chamber. For example, the measurement was performed under the condition that the applied voltage was 5 Vrms and the applied frequency signal was applied in a sine sweep in the range of 20 Hz to 20 kHz, and the measurement results were smoothed by 1 / 3 octaves.

[0219] In Experimental Example 1, Example 1, and Example 2, the dimensions of the vibration member were identically prepared to be 200 mm in width, 200 mm in height, and 0.1 mm in thickness. In Experimental Example 1, Example 1, and Example 2, the dimensions of the vibration device were identically prepared to be 120 mm in width, 60 mm in height, and 0.16 mm in thickness. In Figure 17 , the horizontal axis represents frequency (Hz), and the vertical axis represents sound pressure level (SPL) (dB). In Figure 17 , the thin solid line, the thick solid line, and the dashed line represent Experimental Example 1, Example 1, and Example 2, respectively. Figure 17 The experimental conditions of

[0220] Table 1 below may be a table showing the sound performance of the sound output devices according to Experimental Example 1, Example 1, and Example 2. In Table 1, the standard deviation may be the standard deviation of the sound curve and may represent the flatness of the sound pressure level. In Table 1, F0 may be the initial value of the resonance frequency and may be the frequency at which the resonance peak first appears in the audible frequency band. For example, F0 may be the low sound reproduction band. For example, as the value of F0 decreases, the low sound reproduction band may become wider, and the speaker may be evaluated as a good speaker.

[0221] [Table 1]

[0222]

[0223] Referring to Figure 17 and Table 1, the average sound pressure levels (SPL) (dB) of Experimental Example 1, Example 1, and Example 2 at 0.15 kHz to 20 kHz were 88.78 dB, 97.48 dB, and 90.71 dB, respectively. Therefore, it can be seen that Example 1 and Example 2 exhibit sound pressure levels higher than that of Experimental Example 1.

[0224] The average sound pressure level of Example 1 has been measured to be approximately 8.7 dB higher than that of Experimental Example 1. In Example 1, since the vibrating member includes a pattern portion, the stiffness of the vibrating member in the third direction (or Z-axis direction) can maintain the stiffness of aluminum (Al), and the stiffness of the vibrating member in the first direction (or X-axis direction) and the second direction (or Y-axis direction) can be relatively flexible. For example, the stiffness of the vibrating member in the XY plane and the stiffness of the vibrating member in the Z-axis direction can be changed, for example, the bending stiffness can be changed. Therefore, compared with Experimental Example 1, in Example 1, it can be seen that the sound pressure level is enhanced and the low sound reproduction band is expanded.

[0225] For example, in the case where a small diaphragm (or vibrating member) is configured, the sound pressure level in the low sound reproduction band can be reduced. For example, in a small vibrating member, sound can be generated at low frequencies by piston vibration in which the vibrating member moves up and down, and as the area of the vibrating member decreases, the moving area can be reduced, thereby reducing the sound pressure level at low frequencies. However, the vibrating member should have a sound pressure level similar to that of the mid- and high-pitched sound band in order to perform the speaker function at audible frequencies.

[0226] Therefore, in an embodiment of the present disclosure, since a pattern portion is configured in the vibrating member, the sound pressure level can be enhanced and the low sound reproduction band can be expanded. Therefore, an embodiment of the present disclosure can be applied to a small sound output device. Moreover, compared with Experimental Example 1, in the mid- and high-pitched sound band of 1 kHz or higher, the embodiment of the present disclosure can have a high sound pressure level, thereby providing a sound output device that can be used as a speaker at audible frequencies (e.g., 20 Hz to 20 kHz).

[0227] The average sound pressure level of Example 2 has been measured to be 1.93 dB higher than that of Experimental Example 1 and has been measured to be 6.77 dB lower than that of Example 1. In Example 2, the low sound reproduction band has been measured to be similar to that of Example 1, and compared with Experimental Example 1, since an adhesive member is additionally configured, it can be seen that the flatness of the sound pressure level is improved.

[0228] The standard deviations of Experimental Example 1, Example 1, and Example 2 have been measured to be 6.69, 9.38, and 8.11, respectively. Compared with Experimental Example 1, the standard deviations of Example 1 and Example 2 have increased by 2.69 and 1.42, respectively. Therefore, compared with Experimental Example 1, in Example 2, it can be seen that the flatness of the sound pressure level is good.

[0229] The F0 values of Experimental Example 1, Example 1, and Example 2 have been measured to be 239 Hz, 88 Hz, and 88 Hz, respectively. Compared with Experimental Example 1, the F0 values of Example 1 and Example 2 have decreased by 151 Hz. Therefore, compared with Experimental Example 1, in Example 1 and Example 2, it can be seen that the low sound reproduction frequency is expanded.

[0230] The following Table 2 can be a table for comparing the physical properties of the vibration member in Experimental Example 1 with those of the vibration member in Example 1.

[0231] [Table 2]

[0232]

[0233] Referring to Table 2, the density of Experimental Example 1 has been measured to be 2770 kg / m 3 , and the density of Example 1 has been measured to be 277 kg / m 3 . Therefore, when the vibration member includes a pattern portion, it can be seen that the density is reduced to about one-tenth.

[0234] The Young's modulus E, Poisson's ratio, and shear modulus of Experimental Example 1 have been measured to be 71 GPa, 0.33, and 27 GPa, respectively, regardless of direction.

[0235] The Young's modulus of Example 1 has been measured to be 0.13 GPa in the first direction (or X-axis direction), 0.13 GPa in the second direction (or Y-axis direction), and 7.1 GPa in the third direction (or Z-axis direction). Therefore, it can be seen that the Young's modulus in the third direction (or Z-axis direction) is higher, while the Young's modulus in the first direction (or X-axis direction) and the second direction (or Y-axis direction) is lower. Therefore, it can be seen that Example 1 has flexibility because the stiffness in the third direction (or Z-axis direction) is relatively strong, while the stiffness in the first direction (or X-axis direction) and the second direction (or Y-axis direction) is relatively low.

[0236] The Poisson's ratio of Example 1 has been measured to be 0.96 in the XY-axis direction, 0.0062 in the YZ-axis direction, and 0.0062 in the XZ-axis direction. For example, the Poisson's ratio can indicate that as the Poisson's ratio decreases, the strain with respect to the external force decreases, and as the Poisson's ratio increases, the strain increases. For example, in a vibrating plate without a pattern portion, Example 1 can have the same Poisson's ratio with respect to the X-axis, Y-axis, and Z-axis.

[0237] One embodiment of the present disclosure may include a pattern portion. Thus, it can be seen that the Poisson's ratio varies based on the pattern portion. According to one embodiment of the present disclosure, the Poisson's ratio of Embodiment 1 is 0.96 in the XY-axis direction, 0.0062 in the YZ-axis direction, and 0.0062 in the XZ-axis direction. This can indicate that: based on the external force in the plane (X, Y axes), the strain is larger, and based on the external force in the vertical direction (Z axis), the strain is smaller. According to one embodiment of the present disclosure, the diaphragm can generate strain based on the external force in the plane (X, Y axes), and can maintain a rigid state, where the diaphragm does not generate strain based on the external force in the vertical direction (Z axis). Therefore, the sound pressure level can be improved by the vibration based on the contraction and / or expansion of the diaphragm in the plane (X, Y axes) (in-plane), and the stiffness in the Z axis (out-of-plane) can be maintained. Thus, the vibration transmission can be maximized, thereby expanding the reproduction band of the low-pitched sound band.

[0238] The shear modulus of Embodiment 1 has been measured to be 0.0035 in the XY-axis direction, 1.40 in the YZ-axis direction, and 1.40 in the XZ-axis direction. For example, the shear modulus can represent the modulus value in the shear direction. For example, in a diaphragm without a configured pattern portion, the Young's modulus can be equal to each other in all directions, so the shear modulus cannot be measured.

[0239] In one embodiment of the present disclosure, since the pattern portion is configured, the physical properties of the diaphragm in the XY-axis, YZ-axis, and XZ-axis can be changed. For example, the diaphragm can be flexible in the XY-axis (or in-plane) direction and can have high elasticity in the Z-axis (or out-of-plane) direction. For example, the shear modulus (which is the modulus that appears when stretched in the shear direction) can be different from the Young's modulus. Therefore, when stretched in the XY-axis direction, the shear modulus in the YZ-axis can be different from the shear modulus in the XZ-axis. For example, this can indicate that: the degree of strain based on the external force decreases as the shear modulus increases. According to one embodiment of the present disclosure, the shear modulus in the XY-axis can be less than the shear modulus in the YZ-axis and the shear modulus in the XZ-axis. Therefore, the degree of strain based on the external force can be larger. Therefore, the sound pressure level can be improved by the vibration based on the contraction and / or expansion of the diaphragm in the plane (XY-axis) (in-plane), thereby expanding the reproduction band of the low-pitched sound band.

[0240] Figure 18 It is a graph showing the sound pressure level characteristics of the sound output device according to the experimental example and the embodiment of the present disclosure.

[0241] The inventors have prepared Experimental Example 2 and Embodiment 3 as samples in order to compare the sound pressure levels of the sound output devices according to one embodiment of the present disclosure. Experimental Example 2 was prepared by connecting a vibration device to a vibration member including aluminum and without forming a pattern portion. Embodiment 3 is the above referenceFigure 2 and 3 The sound output device according to an embodiment of the present disclosure as described, and a sample was prepared by coupling a vibration device to a vibration member in which each of a plurality of holes was filled with resin. TPU has been used as the resin. For example, the resin may be filled at 85% or more in each of the plurality of holes. In Experimental Example 2 and Embodiment 3, the dimensions of the vibration member were identically prepared to be 150 mm in width, 60 mm in height, and 0.3 mm in thickness. In Experimental Example 2 and Embodiment 3, the dimensions of the vibration device were identically prepared to be 120 mm in width, 60 mm in height, and 0.16 mm in thickness. In Figure 18 , the horizontal axis represents frequency (Hz (Hertz)), and the vertical axis represents sound pressure level (SPL) (dB (decibel)). In Figure 18 , the thin solid line and the thick solid line respectively represent Experimental Example 2 and Embodiment 3. The vibration member of Embodiment 3 includes aluminum. Figure 18 The experimental conditions of

[0242] do not limit the details of the present disclosure.

[0243] [Table 3]

[0244]

[0245] Referring to Figure 18 and Table 3, the average sound pressure levels (SPL) (dB) with respect to frequency of Experimental Example 2 and Embodiment 3 were 77.24 dB and 88.72 dB, respectively, from 0.15 kHz to 20 kHz. Therefore, it can be seen that Embodiment 3 exhibits a sound pressure level higher than that of Experimental Example 2.

[0246] It has been measured that the average sound pressure level of Embodiment 3 is about 11.48 dB higher than that of Experimental Example 2. In Embodiment 3, the stiffness of the vibration member in the third direction (or Z-axis direction) can maintain the stiffness of aluminum (Al), and the stiffness of the vibration member in the first direction (or X-axis direction) and the second direction (or Y-axis direction) can be reduced more than the stiffness of the vibration member in the third direction (or Z-axis direction). Therefore, compared with Experimental Example 2, in Embodiment 3, it can be seen that the sound pressure level is enhanced and the low sound reproduction band is extended.

[0247] It has been measured that the F0s of Experimental Example 2 and Embodiment 3 are 386 Hz and 113 Hz, respectively. Compared with Experimental Example 2, the F0 of Embodiment 3 is reduced by 273 Hz. Therefore, compared with Experimental Example 2, in Embodiment 3, it can be seen that the low sound reproduction band is extended.

[0248] Figure 19It is a graph showing the sound pressure level characteristics regarding frequency based on the size of the vibration member according to the experimental examples and the embodiments of the present disclosure.

[0249] The inventors have prepared Experimental Example 1, Experimental Example 3, Embodiment 2, and Embodiment 4 as samples to compare the sound pressure levels of the sound output device regarding the size of the vibration member. Experimental Example 1 and Embodiment 2 have prepared samples as described in Experimental Example 1 and Embodiment 2 above. In Experimental Example 1 and Embodiment 2, the size of the vibration member has been identically prepared to have a width of 200 mm, a height of 200 mm, and a thickness of 0.1 mm. Experimental Example 3 and Embodiment 4 have prepared samples under the same conditions as Experimental Example 1 and Embodiment 2. In Experimental Example 3 and Embodiment 4, the size of the vibration member has been prepared to have a width of 150 mm and a height of 100 mm. In Experimental Example 3 and Embodiment 4, the thickness of the vibration member has been prepared to be 0.1 mm and 0.5 mm. In Embodiment 4, the thickness of each of the vibration plate, the first protection member, the second protection member, the first adhesive member, and the second adhesive member is 0.1 mm. In Figure 17 In, the horizontal axis represents the frequency (Hz (hertz)), and the vertical axis represents the sound pressure level (SPL) (dB (decibel)). In Figure 19 In, the thin solid line, the thin dashed line, the thick solid line, and the thick dashed line respectively represent Experimental Example 1, Experimental Example 3, Embodiment 2, and Embodiment 4. The vibration members of Experimental Example 1, Experimental Example 3, Embodiment 2, and Embodiment 4 include aluminum. Figure 19 The experimental conditions of Figure 19 do not limit the details of the present disclosure.

[0250] The following Table 4 can be a table showing the sound performance of the sound output device according to Experimental Example 1, Experimental Example 3, Embodiment 2, and Embodiment 4.

[0251] [Table 4]

[0252]

[0253] Referring to Figure 19 and Table 4, the average sound pressure levels (SPL) (dB) of Experimental Example 1 and Experimental Example 3 are 88.78 dB and 84.81 dB respectively at 0.15 kHz to 20 kHz. The F0s of Experimental Example 1 and Experimental Example 3 have been measured to be 239 Hz and 747 Hz respectively. Compared with Experimental Example 1, the F0 of Experimental Example 3 has increased by 508 Hz. Therefore, when the vibration member does not include the pattern part, the inventors can confirm that as the size of the vibration member decreases, the average sound pressure level decreases.

[0254] The average sound pressure levels (SPL) (dB) of Example 2 and Example 4 are 90.71 dB and 91.89 dB respectively from 0.15 kHz to 20 kHz. Compared with Example 2, the average sound pressure level of Example 4 is increased by about 1.18 dB. The standard deviations of Example 2 and Example 4 are measured to be 8.11 and 9.94. Compared with Example 2, the standard deviation of Example 4 is increased by 1.83. Therefore, when the vibration member includes the pattern portion, the inventors can confirm that although the size of the vibration member is reduced, the average sound pressure level is enhanced.

[0255] The F0s of Example 2 and Example 4 are measured to be 88 Hz and 312 Hz respectively. Therefore, compared with the experimental examples, it can be seen that in the embodiments of the present disclosure, the low sound reproduction band can be extended. In addition, compared with Experimental Example 1 and Experimental Example 3, in Example 2 and Example 4, it can be seen that the sound pressure level can be enhanced and the low sound reproduction band can be extended. Therefore, the sound output device according to an embodiment of the present disclosure can be applied to a small sound output device without degrading the sound quality characteristics and / or the sound pressure level characteristics of the sound.

[0256] Figure 20 is a graph showing the sound pressure level characteristics according to an experimental example and another embodiment of the present disclosure. Figure 21 is a graph showing the average sound pressure level and the standard deviation according to an experimental example and another embodiment of the present disclosure. This relates to a sound output device applying the vibration member according to another embodiment of the present disclosure referred to above Figure 5 and Figure 6 described.

[0257] To compare with the sound pressure level of the sound output device according to another embodiment of the present disclosure, the inventors prepared Experimental Example 4 and Example 5 as samples. Experimental Example 4 was prepared by connecting a vibration device to a vibration member including plastic without a formed pattern portion. Example 5 is the sound output device according to another embodiment of the present disclosure referred to above Figure 5 and Figure 6 described, and was prepared by connecting a vibration device to a vibration member in which a second pattern portion is disposed in the third region of the vibration plate. The vibration plate of Example 5 was prepared by using a three-dimensional (3D) printing process. The vibration members of Experimental Example 4 and Example 5 include an ABS material. In Experimental Example 4 and Example 5, the size of the vibration member was prepared to be 120 mm in width and 60 mm in height. In Experimental Example 4, the thickness of the vibration member was prepared to be 2 mm, and in Example 5, the thickness of the vibration member was prepared to be 3 mm in the first region and 2 mm in the third region. In Figure 20 it, the horizontal axis represents the frequency (Hz (hertz)), and the vertical axis represents the sound pressure level (SPL) (dB (decibel)). In Figure 20In [the figure], the thin solid line and the thick solid line respectively represent Experimental Example 4 and Example 5. In Figure 21 it, the bar graph shows the average sound pressure level, and the broken-line graph shows the standard deviation of the sound pressure level. Figure 20 and Figure 21 the experimental conditions of [the figure] do not limit the details of the present disclosure.

[0258] Referring to Figure 20 and Figure 21 it has been measured that the average sound pressure levels of Experimental Example 4 and Example 5 are 89.6 dB and 91.8 dB respectively. It has been measured that the average sound pressure level of Example 5 is about 2.2 dB higher than that of Experimental Example 4. Similarly, the standard deviations of the average sound pressure levels of Experimental Example 4 and Example 5 are about 5.2 and about 5.6.

[0259] Therefore, according to an embodiment of the present disclosure, when the vibration member includes a pattern portion, it can be seen that the average sound pressure level of the sound output device is improved. Moreover, when the vibration member includes a plastic material, it can be seen that the sound pressure level characteristics are further enhanced in the tone sound band including the low tone sound band.

[0260] Figure 22 is a cross-sectional view showing a vehicle sound device according to an embodiment of the present disclosure. Figure 23 is of Figure 22 the exploded perspective view of the sound output device shown in [the figure] according to an embodiment of the present disclosure.

[0261] Referring to Figure 22 it, a vehicle sound device according to an embodiment of the present disclosure may include the sound output device as described above. The sound output device may be provided or equipped in a vehicle so as to output sound S to the interior space IS of the vehicle 800.

[0262] The vehicle 800 may include an interior material (or interior trim material) 850. In the following description, for convenience of description, the "interior material 850" may be referred to as the "vehicle interior material 850".

[0263] The vehicle interior material 850 may include all parts constituting the interior of the vehicle 800, or may include all parts provided in the interior space IS of the vehicle 800. For example, the vehicle interior material 850 may be an interior member or an interior trim member of the vehicle 800, but the embodiments of the present disclosure are not limited thereto. For example, the vehicle interior material 850 may be a support member configured to support the sound output device, and the sound output device transmits vibration through the support member.

[0264] The interior material 850 of a vehicle according to an embodiment of the present disclosure may be configured to be exposed at the interior or cabin space IS of the vehicle 800, within the interior or cabin space IS of the vehicle 800. For example, the interior material 850 of the vehicle may be provided to cover at least one surface (or inner surface) of a main frame (or vehicle body), a side frame (or side body), a door frame (or door body), a handle frame (or steering wheel hub), and a seat frame, which are exposed at the cabin space IS of the vehicle 800.

[0265] The interior material 850 of a vehicle according to an embodiment of the present disclosure may include an instrument panel, a pillar interior material (or pillar trim), a floor interior material (or carpet), a roof interior material (or headliner), a door interior material (or door trim), a handle interior material (or steering cover), a seat interior material, a rear package interior material (or rear seat shelf), an overhead console (or interior lighting interior material), a rearview mirror, a glove box, a sun visor, but embodiments of the present disclosure are not limited thereto.

[0266] The interior material 850 of a vehicle according to an embodiment of the present disclosure may include one or more of metal, wood, rubber, plastic, glass, fiber, cloth, paper, mirror, leather, carbon, but embodiments of the present disclosure are not limited thereto. The interior material 850 including a plastic material may be an injection material implemented by an injection process using a thermosetting resin or a thermoplastic resin, but embodiments of the present disclosure are not limited thereto. The interior material 850 including a fiber material may include one or more of synthetic fiber, carbon fiber (or aramid fiber), and natural fiber, but embodiments of the present disclosure are not limited thereto. The interior material 850 including a fiber material may be a fabric sheet, a knitted sheet, or a non-woven fabric, but embodiments of the present disclosure are not limited thereto. For example, the paper may be cone paper. For example, the cone paper may be pulp or foam plastic, but embodiments of the present disclosure are not limited thereto. The interior material 850 including a leather material may be natural leather or artificial leather, but embodiments of the present disclosure are not limited thereto.

[0267] The interior material 850 of a vehicle according to an embodiment of the present disclosure may include one or more of a flat portion and a curved portion. For example, the interior material 850 of the vehicle may have a structure corresponding to the structure of a corresponding vehicle structural material, or may have a structure different from the structure of the corresponding vehicle structural material.

[0268] According to an embodiment of the present disclosure, the vibration member 100 may be connected to the vehicle interior material 850. The vibration member 100 may be connected to the vehicle interior material 850 by using the coupling member 200 and the vibration transmission member 150. According to an embodiment of the present disclosure, the vibration member 100 may include one of the vibration member 100 and the vibration plate 110 described above with reference to Figures 3 to 10 . The vibration device 500 may be disposed on the second surface 100b of the vibration member 100 facing the vehicle interior material 850.

[0269] According to an embodiment of the present disclosure, the vibration device 500 may be disposed on the vibration member 100. The vibration device 500 may vibrate the vibration member 100 to transmit the vibration to the vehicle interior material 850 connected to the vibration member 100. The vibration device 500 may generate a sound S based on the vibration transmitted to the vehicle interior material 850. For example, the vibration device 500 may indirectly vibrate the vehicle interior material 850 by using the vibration member 100 and the vibration transmission member 150 to generate a sound S based on the vibration of the vehicle interior material 850.

[0270] For example, the vibration device 500 may be configured as the vibration device according to an embodiment of the present disclosure described above with reference to Figures 11 to 16 .

[0271] For example, the vibration device 500 may be configured to vibrate the vehicle interior material 850 based on the vibration member 100 and the vibration transmission member 150 to output a sound S to the interior part of the vehicle 800 or the interior space IS. For example, the vehicle interior material 850 may have a size larger than that of the vibration device 500, but the embodiments of the present disclosure are not limited thereto.

[0272] The vibration transmission member 150 may be disposed between the vehicle interior material 850 and the vibration member 100. The vibration transmission member 150 may be coupled to the vehicle interior material 850 by using the coupling member 200.

[0273] The vibration transmission member 150 may be configured within an edge region of the vibration member 100. Based on the shape of the vibration member 100, the vibration transmission member 150 may include a polygonal shape, which includes a rectangular shape or a square shape, but embodiments of the present disclosure are not limited thereto. For example, the vibration transmission member 150 may have a horizontal length parallel to the first direction X and a vertical length parallel to the second direction Y. For example, with respect to the same plane, the first direction X may be the first horizontal direction or the first horizontal length direction of the vibration transmission member 150, and the second direction Y may be the second horizontal direction or the second horizontal length direction of the vibration transmission member 150 that intersects the first direction X. For example, according to another embodiment of the present disclosure, the horizontal length of the vibration transmission member 150 parallel to the first direction X may be different from the vertical length parallel to the second direction Y. For example, the vibration transmission member 150 may include a frame structure having exactly the same thickness, but embodiments of the present disclosure are not limited thereto.

[0274] According to an embodiment of the present disclosure, the vibration transmission member 150 may include a first vibration transmission member 151 and a second vibration transmission member 152.

[0275] The first vibration transmission member 151 may be connected to an edge portion of the vibration member 100 that is parallel to the horizontal direction of the vibration member 100. The first vibration transmission member 151 may include a first auxiliary pattern portion 151a. For example, the first vibration transmission member 151 may be connected to each of a first edge portion and a second edge portion EA1 of the vibration member 100 that are parallel to the horizontal direction of the vibration member 100. For example, the first auxiliary pattern portion 151a may include a pattern portion having a positive Poisson's ratio. For example, the pattern portion with a positive Poisson's ratio may be a pattern portion formed by contraction in the vertical direction when tensile stress is applied. The first auxiliary pattern portion 151a may correspond to the major axis direction of the vibration member 100. For example, the interior angle of the pattern portion with a positive Poisson's ratio disposed in the first auxiliary pattern portion 151a may be 100 degrees or less. For example, the first auxiliary pattern portion 151a may have a honeycomb structure.

[0276] The second vibration transmission member 152 may be connected to an edge portion of the vibration member 100 parallel to the vertical direction of the vibration member 100. The second vibration transmission member 152 may include a second auxiliary pattern portion 152a. For example, the second vibration transmission member 152 may be connected to each of a third edge portion and a fourth edge portion EA2 of the vibration member 100 parallel to the vertical direction of the vibration member 100. For example, the second auxiliary pattern portion 152a may include a pattern portion having a negative Poisson's ratio. For example, the pattern portion with a negative Poisson's ratio may be a pattern portion formed by expanding in the vertical direction when tensile stress is applied. The second auxiliary pattern portion 152a may correspond to the short axis direction of the vibration member 100. For example, an inner angle of the pattern portion with a negative Poisson's ratio disposed in the second auxiliary pattern portion 152a may be 100 degrees or more. For example, the second auxiliary pattern portion 152a may have an auxetic structure.

[0277] For example, the vibration transmission member 150 may be manufactured by using a laser process, a chemical etching process, or a computer numerical control (CNC) process, but embodiments of the present disclosure are not limited thereto.

[0278] According to another embodiment of the present disclosure, the vibration transmission member 150 may be configured as a joint portion between the vehicle interior material 850 and the vehicle exterior material. For example, the first auxiliary pattern portion 151a and the second auxiliary pattern portion 152a may be disposed in the entire area of the joint portion between the vehicle interior material 850 and the vehicle exterior material. However, embodiments of the present disclosure are not limited thereto. As another example, the vibration transmission member 150 may be configured to include one of the first auxiliary pattern portion 151a and the second auxiliary pattern portion 152a. For example, a plurality of holes disposed in each of the first auxiliary pattern portion 151a and the second auxiliary pattern portion 152a may be designed based on the density, deflection, and stiffness of the vibration member 100. For example, the XY-axis stiffness and the Z-axis stiffness (e.g., bending stiffness) of the vibration member 100 may be changed.

[0279] According to an embodiment of the present disclosure, the vibration transmission member 150 including the first auxiliary pattern portion 151a and the second auxiliary pattern portion 152a may be disposed between the vibration member 100 and the vehicle interior material 850 so as to maximize the vibration generated in the vibration device 500. Moreover, according to an embodiment of the present disclosure, since the vibration transmission member 150 includes the first auxiliary pattern portion 151a and the second auxiliary pattern portion 152a, the weight of the vehicle sound device may be reduced compared to a case where no auxiliary pattern portion is disposed. Therefore, weight reduction of the vehicle sound device may be achieved.

[0280] Figure 24It is a diagram showing the sound pressure level characteristics of a vehicle sound device as shown in the experimental examples and embodiments of the present disclosure. Figure 22 The figure showing the sound pressure level characteristics of the vehicle sound device shown in

[0281] The inventors have prepared Experimental Example 5 and Embodiment 6 as samples to compare the sound pressure levels of vehicle sound devices according to an embodiment of the present disclosure. Experimental Example 5 and Embodiment 6 prepared samples by connecting a vibration device to a vibration member including aluminum and not configured with a pattern portion. Experimental Example 5 configured a member having a frame shape, in which a first auxiliary pattern portion and a second auxiliary pattern portion were not configured between the vibration member and the support member. Embodiment 6 configured a member in which a first auxiliary pattern portion and a second auxiliary pattern portion were configured between the vibration member and the support member. In Experimental Example 5 and Embodiment 6, the dimensions of the vibration member were identically prepared to be 200 mm in width, 200 mm in height, and 0.1 mm in thickness. In Experimental Example 5 and Embodiment 6, the dimensions of the vibration device were identically prepared to be 120 mm in width, 60 mm in height, and 0.16 mm in thickness. In Figure 24 the horizontal axis represents frequency (Hz (hertz)), and the vertical axis represents sound pressure level (SPL) (dB (decibel)). In Figure 24 the thin solid line and the thick solid line represent Experimental Example 5 and Embodiment 6, respectively. Figure 24 The experimental conditions of

[0282] do not limit the details of the present disclosure.

[0283] [Table 5]

[0284] Frequency (Hz) Sound performance Experimental Example 5 Example 6 0.15 to 20 kHz Average sound pressure level 91.0 96.9

[0285] Referring to Figure 24 and Table 5, the average sound pressure levels (SPL) (dB) of Experimental Example 5 and Embodiment 6 were 91.0 dB and 96.9 dB, respectively, at 0.15 kHz to 20 kHz. Compared with Experimental Example 5, the average sound pressure level of Embodiment 6 increased by about 5.9 dB. Therefore, according to an embodiment of the present disclosure, it can be seen that the average sound pressure level increases when an auxiliary pattern portion is configured between the vibration member and the support member. According to an embodiment of the present disclosure, a vibration transmission member including auxiliary pattern portions having a positive Poisson's ratio and a negative Poisson's ratio can be configured, so that the vibration generated in the vibration member can be more effectively transmitted to the support member.

[0286] The following describes a device according to one or more exemplary embodiments of the present disclosure.

[0287] According to one or more embodiments of the present disclosure, a sound output device may include: a vibration member including a diaphragm having a pattern portion; and a vibration device configured to vibrate the vibration member based on the piezoelectric effect. The pattern portion may include one or more of a plurality of holes and a plurality of grooves, and is configured to increase the average sound pressure level of the sound output device.

[0288] According to one or more embodiments of the present disclosure, the diaphragm may have a honeycomb structure based on a plurality of holes.

[0289] According to one or more embodiments of the present disclosure, the diaphragm may include a first region, a second region surrounding the first region, and a third region between the first region and the second region, and the pattern portion may be disposed within the third region.

[0290] According to one or more embodiments of the present disclosure, the diaphragm may include a first region, a second region surrounding the first region, and a third region between the first region and the second region. The pattern portion may include a pattern portion disposed within the first region and including a plurality of holes, and a pattern portion disposed within the third region and including a plurality of grooves.

[0291] According to one or more embodiments of the present disclosure, the pattern portion disposed within the first region has a honeycomb structure based on a plurality of holes.

[0292] According to one or more embodiments of the present disclosure, the diaphragm may include a protruding portion within the first region. The pattern portion disposed within the third region may include a plurality of protruding patterns protruding from a side surface of the protruding portion toward the third region, and each of the plurality of grooves may be located between the plurality of protruding patterns.

[0293] According to one or more embodiments of the present disclosure, the height of each of the plurality of protruding patterns may gradually decrease from the first region toward the second region.

[0294] According to one or more embodiments of the present disclosure, the vibration member may further include: a first protection member disposed on a first surface of the diaphragm; a second protection member disposed on a second surface of the diaphragm opposite to the first surface; and the vibration device may be connected to one of the first protection member and the second protection member.

[0295] According to one or more embodiments of the present disclosure, the vibration member may further include: a first adhesive member disposed between the first surface of the diaphragm and the first protection member; and a second adhesive member disposed between the second surface of the diaphragm and the second protection member.

[0296] According to one or more embodiments of the present disclosure, each of the plurality of holes and / or each of the plurality of grooves may be an empty space or may be filled with resin.

[0297] According to one or more embodiments of the present disclosure, the pattern portion may be disposed on the front surface or the rear surface of the diaphragm, or penetrate the diaphragm.

[0298] According to one or more embodiments of the present disclosure, the third region may have a thickness within a range of 30% to 35% of the thickness of the first region and the same thickness as the second region.

[0299] According to one or more embodiments of the present disclosure, an acoustic device may include the acoustic output device as described above, a support member disposed to face the vibration member of the acoustic output device, and a coupling member for connecting or coupling the support member to the vibration member.

[0300] According to one or more embodiments of the present disclosure, the acoustic device may further include a vibration transmission member disposed between the support member and the vibration member, and the vibration transmission member is coupled to the support member by using the coupling member. The vibration transmission member may include a first auxiliary pattern portion and a second auxiliary pattern portion different from the first auxiliary pattern portion.

[0301] According to one or more embodiments of the present disclosure, the vibration transmission member may include: a first vibration transmission member connected to an edge portion of the vibration member parallel to the horizontal direction of the vibration member, the first vibration transmission member including the first auxiliary pattern portion; and a second vibration transmission member connected to an edge portion of the vibration member parallel to the vertical direction of the vibration member, the second vibration transmission member including the second auxiliary pattern portion.

[0302] According to one or more embodiments of the present disclosure, the first vibration transmission member may be connected to each of a first edge portion and a second edge portion of the vibration member parallel to the horizontal direction of the vibration member, and the second vibration transmission member may be connected to each of a third edge portion and a fourth edge portion of the vibration member parallel to the vertical direction of the vibration member.

[0303] According to one or more embodiments of the present disclosure, the Poisson's ratio of the first auxiliary pattern portion may be different from or opposite to the Poisson's ratio of the second auxiliary pattern portion.

[0304] According to one or more embodiments of the present disclosure, the first auxiliary pattern portion may have a positive Poisson's ratio, and the second auxiliary pattern portion may have a negative Poisson's ratio.

[0305] According to one or more embodiments of the present disclosure, the first auxiliary pattern portion may have a honeycomb structure, and the second auxiliary pattern portion may have a auxetic structure.

[0306] According to one or more embodiments of the present disclosure, the support member may be configured to support a peripheral portion of the vibration member so as to cover the vibration device of the acoustic output device.

[0307] According to one or more embodiments of the present disclosure, the support member may be an interior material of a vehicle.

[0308] According to one or more embodiments of the present disclosure, the sound output device may further include a resin accommodated in one or more of a plurality of holes or a plurality of grooves.

[0309] According to one or more embodiments of the present disclosure, the vibration device may include a first covering member, a second covering member, and a vibration member located between the first covering member and the second covering member, and the vibration member includes a piezoelectric material.

[0310] According to one or more embodiments of the present disclosure, the vibration device may further include a signal supply member electrically connected to the vibration part, and a part of the signal supply member may be accommodated between the first covering member and the second covering member.

[0311] According to one or more embodiments of the present disclosure, the vibration device may include a first vibration generating part, a second vibration generating part stacked on the first vibration generating part, and an intermediate member located between the first vibration generating part and the second vibration generating part. One of the first vibration generating part and the second vibration generating part may be connected to the vibration plate.

[0312] According to one or more embodiments of the present disclosure, each of the first vibration generating part and the second vibration generating part may include a first covering member, a second covering member, and a vibration part located between the first covering member and the second covering member, and the vibration part includes a piezoelectric material.

[0313] For those skilled in the art, it is obvious that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is intended to cover the modifications and variations of the present disclosure as long as they are within the scope of the appended claims and their equivalents.

Claims

1. A sound output device, comprising: a vibration member including a vibration plate including a pattern portion; as well as a vibration device configured to vibrate the vibration member based on a piezoelectric effect, The pattern portion includes one or more of a plurality of holes and a plurality of grooves, and is configured to increase an average sound pressure level of the sound output device.

2. The sound output device according to claim 1, wherein: The vibration plate has a honeycomb structure based on the plurality of holes.

3. The sound output device according to claim 1, wherein: The vibration plate includes a first region, a second region surrounding the first region, and a third region between the first region and the second region, and The pattern portion is arranged in the third region.

4. The sound output device according to claim 1, wherein: The vibration plate includes a first region, a second region surrounding the first region, and a third region between the first region and the second region, and The pattern part comprises: a pattern portion disposed within the first region and including the plurality of holes; and A pattern portion is disposed within the third region and includes the plurality of grooves.

5. The sound output device according to claim 4, wherein: The pattern portion arranged in the first region has a honeycomb structure based on the plurality of holes.

6. The sound output device according to claim 3 or 4, wherein: The vibration plate includes a protruding portion located within the first region, The pattern portion arranged in the third region includes a plurality of protruding patterns protruding from a side surface of the protruding portion toward the third region, and Each of the plurality of grooves is located between the plurality of protrusion patterns.

7. The sound output device according to claim 6, wherein: A height of each of the plurality of protrusion patterns gradually decreases from the first region toward the second region.

8. The sound output device according to any one of claims 2 to 4, wherein: The vibration component also includes: A first protection member disposed on a first surface of the vibration plate; and a second protection member disposed on a second surface of the vibration plate opposite to the first surface, Wherein, the vibration device is connected to one of the first protection member and the second protection member.

9. The sound output device according to claim 8, wherein: The vibration component also includes: a first adhesive member disposed between the first surface of the vibration plate and the first protective member; and A second adhesive member is disposed between the second surface of the vibration plate and the second protective member.

10. The sound output device according to claim 1, wherein: Each of the plurality of holes and / or each of the plurality of grooves is an empty space or is filled with a resin.

11. The sound output device according to claim 1, wherein: The pattern portion is disposed on the front surface or the rear surface of the vibration plate, or penetrates the vibration plate.

12. The sound output device according to claim 3 or 4, wherein: The third region has a thickness in the range of 30% to 35% of the thickness of the first region and the same as the thickness of the second region.

13. A sound device, comprising: The sound output device according to any one of claims 1 to 12; a supporting member disposed to face the vibration member of the sound output device; as well as A coupling member for connecting or coupling the supporting member to the vibrating member.

14. The sound device according to claim 13, wherein: The sound device also includes: a vibration transfer member between the support member and the vibration member, the vibration transfer member being coupled to the support member by using the coupling member, The vibration transfer member includes a first auxiliary pattern portion and a second auxiliary pattern portion different from the first auxiliary pattern portion.

15. The sound device according to claim 14, wherein The vibration transmission member comprises: a first vibration transferring member connected to an edge portion of the vibration member parallel to a horizontal direction of the vibration member, the first vibration transferring member including the first auxiliary pattern portion; and A second vibration transferring member connected to an edge portion of the vibration member parallel to a vertical direction of the vibration member, the second vibration transferring member including the second auxiliary pattern portion.

16. The sound device according to claim 14, wherein The first vibration transmitting member is connected to each of a first edge portion and a second edge portion of the vibration member parallel to a horizontal direction of the vibration member, and The second vibration transferring member is connected to each of a third edge portion and a fourth edge portion of the vibration member parallel to a vertical direction of the vibration member.

17. The sound device according to claim 15, wherein: A Poisson's ratio of the first auxiliary pattern portion is different from or opposite to a Poisson's ratio of the second auxiliary pattern portion.

18. The sound device according to claim 15, wherein The first auxiliary pattern portion has a honeycomb structure, and the second auxiliary pattern portion has an auxetic structure.

19. The sound device according to claim 13, wherein: The supporting member is configured to support a peripheral portion of the vibration member so as to cover the vibration device of the sound output device.

20. The sound device according to claim 13 or 14, wherein: The support member is a vehicle interior material.

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