Acoustic device and vehicle including the same

Abstract

An acoustic apparatus and a vehicle including the same are disclosed. The acoustic apparatus may be disposed at at least one of a vibration member and an internal material of the vehicle and configured to output sound. The acoustic device may include: a first electrode layer; a first vibration layer on the first electrode layer; a second electrode layer on the first vibration layer; a first line connected to the first electrode layer and in contact with the vibrating member; and a second line connected with the second electrode layer and in contact with the vibrating member.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of Korean Patent Application No. 10-2024-0040067, filed on March 22, 2024, which is hereby incorporated by reference as if fully set forth herein. Technical Field

[0003] The present disclosure relates to an acoustic apparatus and a vehicular apparatus including the acoustic apparatus. Background Art

[0004] A vehicle includes an acoustic device that outputs sound according to an audio signal output from a multimedia device (eg, a car audio player).

[0005] However, acoustic devices in vehicles have difficulties in configuring the acoustic devices due to space limitations inside the vehicle, and have limitations in outputting desired sounds. Summary of the Invention

[0006] The inventors of the present disclosure have recognized the above-mentioned problems and have conducted various experiments to implement an acoustic device that can be easily installed in a vehicle or a vehicle. The inventors of the present disclosure have invented an acoustic device that can be easily installed in a vehicle or a vehicle and a vehicle including the acoustic device through various experiments.

[0007] The present disclosure has been made in view of the above-mentioned problems, and an object of the present disclosure is to provide an acoustic device that can be easily provided in a vehicle or a vehicle, and a vehicle including the acoustic device.

[0008] Additional features and advantages of the present disclosure will be set forth in the following description, and in part will be apparent from the description, or may be learned by practicing the present disclosure. Other advantages of the present disclosure will be realized and obtained through the structures particularly pointed out in the written description and claims as well as the accompanying drawings.

[0009] To achieve these and other advantages and embodiments of the present disclosure, as embodied and broadly described herein, in one or more embodiments, an acoustic device is configured to output sound at at least one of a vibration member and interior material of a vehicle. The acoustic device includes: a first electrode layer; a first vibration layer located on the first electrode layer; a second electrode layer located on the first vibration layer; a first wire connected to the first electrode layer and in contact with the vibration member; and a second wire connected to the second electrode layer and in contact with the vibration member.

[0010] To achieve these and other advantages and embodiments of the present disclosure, as embodied and broadly described herein, in one or more embodiments, a vehicle includes: a vibration member; interior material; and at least one acoustic device, wherein the at least one acoustic device includes at least one of the above-mentioned acoustic devices, the acoustic device including: a first electrode layer; a first vibration layer, located on the first electrode layer; a second electrode layer, located on the first vibration layer; a first wire, connected to the first electrode layer and in contact with the vibration member; and a second wire, connected to the second electrode layer and in contact with the vibration member.

[0011] To achieve these and other advantages and embodiments of the present disclosure, as embodied and broadly described herein, in one or more embodiments, an acoustic device is configured to output sound at at least one of a vibrating member and interior material of a vehicle. The acoustic device includes a first electrode layer, a first vibration layer located on the first electrode layer, a second electrode layer located on the first vibration layer, and a second vibration layer located between the first electrode layer and the first vibration layer.

[0012] To achieve these and other advantages and embodiments of the present disclosure, as embodied and broadly described herein, in one or more embodiments, a vehicle includes: a vibration component; interior material; and at least one acoustic device, wherein the at least one acoustic device includes at least one of the above-mentioned acoustic devices, the acoustic device including a first electrode layer, a first vibration layer on the first electrode layer, a second electrode layer on the first vibration layer, and a second vibration layer between the first electrode layer and the first vibration layer.

[0013] According to one or more embodiments of the present disclosure, sound characteristics and / or sound pressure characteristics may be improved.

[0014] According to one or more embodiments of the present disclosure, there may be provided an acoustic device integrated with an interior material or a vibration member of a vehicle, and a vehicle including the acoustic device.

[0015] Other systems, methods, features, and advantages will be or become apparent to one of ordinary skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features, and advantages be included within this description, be within the scope of the present disclosure, and be protected by the following claims. Nothing in this section should be construed as limiting those claims. Further aspects and advantages are discussed below in conjunction with aspects of the present disclosure.

[0016] It is to be understood that both the foregoing description and the following description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this disclosure. The drawings illustrate aspects of the disclosure and together with the description serve to explain the principles of the disclosure.

[0018] Figure 1 is a diagram illustrating an acoustic apparatus for a vehicle according to one embodiment of the present disclosure.

[0019] Figure 2 is a diagram illustrating a vehicle according to an embodiment of the present disclosure.

[0020] Figure 3 is a plan view showing an acoustic device according to one embodiment of the present disclosure.

[0021] Figure 4 It is along Figure 3 A cross-sectional view taken along line II′.

[0022] Figure 5 is a diagram illustrating an acoustic device according to another embodiment of the present disclosure.

[0023] Figure 6 is a diagram illustrating an acoustic device according to another embodiment of the present disclosure.

[0024] Figure 7 is a diagram illustrating an acoustic device according to another embodiment of the present disclosure.

[0025] Figure 8 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0026] Figure 9 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0027] Figure 10 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0028] Figure 11 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0029] Reference will now be made in detail to embodiments of the present disclosure, examples of which may be illustrated in the accompanying drawings. In the following description, when a detailed description of well-known functions or configurations may unnecessarily obscure aspects of the present disclosure, their detailed description may be omitted for the sake of brevity. The described progression of processing steps and / or operations is an example; however, the order of the steps and / or operations is not limited to the order set forth herein and may be changed, except where the steps and / or operations must occur in a specific order.

[0030] Unless otherwise specified, the same reference numerals may refer to the same elements throughout the text, even if they are shown in different figures. In one or more aspects, unless otherwise specified, the same elements (or elements with the same names) in different figures may have the same or substantially the same functions and characteristics. The names of the corresponding elements used in the following description are selected for convenience only and may therefore differ from the names used in the actual product.

[0031] The advantages and features of the present disclosure and their implementation methods are illustrated by the embodiments described with reference to the accompanying drawings. However, the present disclosure can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are examples and are provided so that the present disclosure can be comprehensive and complete to help those skilled in the art understand the inventive concept without limiting the scope of protection of the present disclosure.

[0032] The shapes, sizes, areas, ratios, angles, numbers, etc. disclosed in the drawings for describing the embodiments of the present disclosure are merely examples, and thus the present disclosure is not limited to the details shown.

[0033] When the terms "comprising," "having," "including," "containing," "consisting of," "composed of," "formed of," etc. are used, one or more other elements may be added unless a term such as "only" is used. The terms used in this disclosure are only for describing specific embodiments and are not intended to limit the scope of the disclosure. The terms used herein are only for describing example embodiments and are not intended to limit the scope of the disclosure. Terms in the singular may include plural forms unless the context clearly indicates otherwise. The word "exemplary" is used to mean serving as an example or illustration. An embodiment is an example embodiment. An aspect is an example aspect. Any implementation described herein as an "example" is not necessarily to be construed as preferred or superior to other implementations.

[0034] In one or more aspects, elements, features, or corresponding information (e.g., levels, ranges, dimensions, sizes, etc.) are interpreted as including errors or tolerances, even if no explicit description of such errors or tolerances is provided. Errors or tolerances may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). In addition, the term "may" encompasses all meanings of the term "can."

[0035] When describing a positional relationship, for example, when "on," "above," "below," "above," "below," "near," "near," "adjacent," "next to," "close to," etc. are used to describe the positional relationship between two components, one or more other components may be located between the two components unless a more restrictive term such as "immediately," "directly," or "immediately adjacent" is used. For example, when a structure is described as being located "on," "above," "below," "above," "below," "near," "near," "adjacent," "next to," or "close to" another structure, the description should be interpreted as including situations where these structures are in contact with each other and situations where one or more additional structures are disposed or interposed therebetween. In addition, the terms "front," "back," "rear," "left," "right," "top," "bottom," "down," "up," "up," "down," "up," "down," "column," "row," "vertical," "horizontal," etc. refer to an arbitrary reference system.

[0036] When describing temporal relationships, when the temporal order is described as, for example, "after", "subsequently", "next", "before", "prior to", "in front of", etc., non-continuous or non-sequential situations may be included unless more restrictive terms such as "just", "immediately" or "directly" are used.

[0037] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this disclosure, the first element may be the second element, and similarly, the second element may be the first element. In addition, without departing from the scope of this disclosure, the first element, the second element, etc. may be arbitrarily named according to the convenience of those skilled in the art. The terms "first", "second", etc. may be used to distinguish components from each other, but the function or structure of a component is not limited by the ordinal number or component name in front of the component.

[0038] When describing elements of the present disclosure, terms such as "first," "second," "A," "B," "(a)," "(b)," etc. may be used. These terms are intended to distinguish corresponding elements from other elements and are not used to define the nature, basis, order, or number of the elements.

[0039] When an element or layer is “connected,” “combined,” “attached,” “adhered,” etc. to another element or layer, unless otherwise specified, the element or layer may not only be directly connected, combined, attached, adhered, etc. to another element or layer, but may also be indirectly connected, combined, attached, adhered, etc. to another element or layer with one or more intermediate elements or layers disposed or interposed between the elements or layers.

[0040] When an element or layer is stated to be “in contact with,” “overlapping with,” etc., another element or layer, unless otherwise specified, the element or layer may not only be directly in contact with, overlap with, etc., but may also be indirectly in contact with, overlap with, etc., another element or layer with one or more intermediate elements or layers disposed or interposed between the elements or layers.

[0041] Terms such as "row" or "direction" should not be interpreted solely based on the geometric relationship of the corresponding rows or directions being parallel or perpendicular to each other, and may mean rows or directions having broader directionality within the range in which components of the present disclosure can functionally operate.

[0042] The term "at least one" should be understood to include any and all combinations of one or more of the associated listed items. For example, the meaning of "at least one of the first, second, and third items" refers to a combination of items provided by two or more of the first, second, and third items, as well as only one of the first, second, or third items.

[0043] The phrase "first element, second element, and / or" a third element should be understood to mean one of the first, second, and third elements or any and all combinations of the first, second, and third elements. For example, A, B, and / or C can refer to only A; only B; only C; any or some combination of A, B, and C; or all of A, B, and C. Furthermore, the phrase "element A / element B" can be understood to mean element A and / or element B.

[0044] In one or more aspects, unless otherwise specified, the terms "between" and "among" may be used interchangeably for convenience only. For example, the expression "between a plurality of elements" may be understood as "among a plurality of elements." In another example, the expression "among a plurality of elements" may be understood as "between a plurality of 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.

[0045] In one or more aspects, unless otherwise specified, the terms "one another" and "mutually" may be used interchangeably for convenience only. For example, the expression "different from each other" may be understood to mean different from each other. In another example, the expression "different from each other" may be understood to mean different from each other. In one or more examples, the number of elements involved in the aforementioned expressions may be two. In one or more examples, the number of elements involved in the aforementioned expressions may be more than two.

[0046] In one or more aspects, the terms "one or more of" and "one or more of" may be used interchangeably for convenience only, unless otherwise indicated.

[0047] The features of the various embodiments of the present disclosure may be partially or entirely combined or combined with each other and may be operated, associated, or driven together in various ways. The embodiments of the present disclosure may be performed independently of each other, or may be performed together in a mutually dependent or related relationship. In one or more aspects, the components of the various devices according to the various embodiments of the present disclosure may be operatively combined and configured.

[0048] Unless otherwise defined, the terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the example embodiments belong. It should also be understood that, unless otherwise explicitly defined herein, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense.

[0049] In the following description, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. With respect to the reference numerals of the elements in each drawing, unless otherwise specified, the same elements may be shown in other drawings, and the same reference numerals may refer to the same elements. In addition, for ease of description, the proportions, dimensions, sizes, and thicknesses of each element shown in the drawings may differ from the actual proportions, dimensions, sizes, and thicknesses. Therefore, the embodiments of the present disclosure are not limited to the proportions, dimensions, sizes, and thicknesses shown in the drawings.

[0050] Figure 1 is a diagram illustrating an acoustic apparatus for a vehicle according to one embodiment of the present disclosure.

[0051] Reference Figure 1 The vehicle acoustic device according to the embodiment of the present disclosure may include the acoustic device 30. The acoustic device 30 may be provided or equipped in a vehicle so as to output a sound S toward the interior space IS of the vehicle 10.

[0052] The vehicle 10 may include an interior material (or interior finish material) 130. In the following description, for convenience of description, the "interior material 130" may be referred to as the "vehicle interior material 130."

[0053] The vehicle interior material 130 may include all parts constituting the interior of the vehicle 10, or may include all parts provided at the interior space IS of the vehicle 10. For example, the vehicle interior material 130 may be an interior member or interior trim member of the vehicle 10, but the embodiments of the present disclosure are not limited thereto.

[0054] The vehicle interior material 130 according to an embodiment of the present disclosure can be configured to be exposed at or in the interior space IS of the vehicle 10. For example, the vehicle interior material 130 can be configured on one surface (or inner surface) of at least one of the main frame (or vehicle body), side frames (or side bodies), door frames (or door bodies), handle frames (or steering wheel hubs), and seat frames that are exposed at the interior space IS of the vehicle 10. For example, the vehicle interior material 130 can be configured to cover one surface (or inner surface) of at least one of the main frame (or vehicle body), side frames (or side bodies), door frames (or door bodies), handle frames (or steering wheel hubs), and seat frames that are exposed at the interior space IS of the vehicle 10.

[0055] According to an embodiment of the present disclosure, the vehicle interior material 130 may include an instrument panel, pillar interior materials (or pillar decoration), floor interior materials (or carpet), roof interior materials (or roof lining), door interior materials (or door decoration), handle interior materials (or steering wheel cover), seat interior materials, tail packaging interior materials (or rear seat shelves), overhead consoles (or interior lighting interior materials), rearview mirrors, storage boxes and sun visors, but the embodiments of the present disclosure are not limited thereto.

[0056] According to an embodiment of the present disclosure, the vehicle interior material 130 may include one or more of metal, wood, rubber, plastic, glass, fiber, cloth, paper, mirror, leather and carbon, but the embodiment of the present disclosure is not limited thereto. The vehicle interior material 130 including plastic material may be an injection molding material achieved by an injection molding process using a thermosetting resin or a thermoplastic resin, but the embodiment of the present disclosure is not limited thereto. The vehicle interior material 130 including fiber material may include one or more of synthetic fiber, carbon fiber (or aramid fiber) and natural fiber, but the embodiment of the present disclosure is not limited thereto. The vehicle interior material 130 including fiber material may include a fabric sheet, a knitted sheet or a non-woven fabric, but the embodiment of the present disclosure is not limited thereto. For example, the paper may be cone paper. For example, the cone paper may be pulp or foam plastic, but the embodiment of the present disclosure is not limited thereto. The vehicle interior material 130 including leather material may include natural leather or artificial leather, but the embodiment of the present disclosure is not limited thereto.

[0057] The vehicle interior material 130 according to an embodiment of the present disclosure may include one or more flat portions and curved portions. For example, the vehicle interior material 130 may have a structure corresponding to that of a corresponding vehicle structural material, or may have a structure different from that of a corresponding vehicle structural material.

[0058] According to an embodiment of the present disclosure, the acoustic device 30 may be provided at the vehicle interior material 130. The acoustic device 30 may cause the vehicle interior material 130 to vibrate so as to generate a sound S based on the vibration of the vehicle interior material 130. For example, the acoustic device 30 may cause the vehicle interior material 130 to vibrate directly so as to generate a sound S based on the direct vibration of the vehicle interior material 130. For example, the acoustic device 30 may be configured to vibrate the vehicle interior material 130 so as to output the sound S toward the interior space of the vehicle 10 or the in-car space IS. Therefore, the vehicle interior material 130 may be used as a sound vibration plate. The vehicle interior material 130 may be a vibration plate, a sound vibration plate, or a sound-generating plate for outputting the sound S. For example, the size of the vehicle interior material 130 may be larger than the size of the acoustic device 30, but the embodiments of the present disclosure are not limited thereto.

[0059] For example, the acoustic device 30 can be set in one or more of the instrument panel, pillar inner material, floor inner material, roof inner material, door inner material, handle inner material and seat inner material, or can be set in one or more of the tail packaging inner material, overhead console, rearview mirror, storage box and sun visor.

[0060] The acoustic device 30 according to an embodiment of the present disclosure can vibrate the corresponding vehicle interior material 130 by at least one of the one or more acoustic devices 30 set at the vehicle interior material 130 to output real sound S including multi-channels and / or stereo sound toward the interior space IS of the vehicle 10.

[0061] Figure 2 is a diagram illustrating a vehicle according to an embodiment of the present disclosure.

[0062] Reference Figure 2 , a vehicle according to one embodiment of the present disclosure may include an acoustic device 30 .

[0063] When the acoustic device 30 is provided in the roof frame, due to the narrow space of the roof frame, it is difficult to provide the acoustic device 30. In addition, when the acoustic device 30 is attached to the roof frame, damage to the acoustic device 30 may occur due to bending of the roof frame.

[0064] Therefore, the inventors of the present disclosure conducted various experiments that can be provided in the vehicle interior material 130C or the vibration member 131 , which will be described below.

[0065] According to the present disclosure, the acoustic device 30 may be provided on the vibration member 131. The acoustic device 30 may be configured to vibrate the vibration member 131 to output sound according to the vibration of the vibration member 131. For example, the acoustic device 30 may directly vibrate the vibration member 131 to output sound according to the vibration of the vibration member 131.

[0066] According to the present disclosure, the acoustic device 30 may be provided on a vehicle window. The vehicle window or the vehicle window 10 may be at least one of a front window and a side window. The vehicle window may also include at least one of a rear window and a roof window.

[0067] According to the present disclosure, the acoustic device 30 can be installed on at least one of the side windows 241, the rear window 242, and the roof window. For example, the vibration member 131 can be installed on the roof window. For example, the acoustic device 30 can be installed in the middle area or the peripheral area of ​​the window. For example, the acoustic device 30 can be installed in the middle area or the peripheral area of ​​at least one of the side windows 241, the rear window 242, and the roof window.

[0068] Figure 3 is a plan view showing an acoustic device according to one embodiment of the present disclosure. Figure 4 It is along Figure 3 A cross-sectional view taken along line II'.

[0069] Reference Figure 3 and Figure 4, the acoustic device 30 according to one embodiment of the present disclosure can be configured to vibrate the vibration member 131. For example, the acoustic device 30 can be set or configured on the vibration member 131. The acoustic device 30 can be configured to vibrate (or shift or drive) according to a drive signal (or vibration drive signal or voice signal) applied thereto, thereby vibrating (or shifting or driving) the vibration member 131. The acoustic device 30 may include one or more vibration devices. For example, one or more vibration devices can be configured or set on the vibration member 131.

[0070] The vibration member 131 may be a plate, a vibration plate, a vibration target, a vibration panel, an acoustic plate, an acoustic panel, a passive vibration plate, a passive vibration member, a passive vibration panel, an acoustic output plate, or an acoustic vibration plate, and the embodiments of the present disclosure are not limited thereto. For example, the vibration member 131 may be made of glass, but the embodiments of the present disclosure are not limited thereto. For example, the vibration member 131 may be a transparent substrate, but the embodiments of the present disclosure are not limited thereto. For example, the acoustic device 30 may be installed at the interior material of the roof, but the embodiments of the present disclosure are not limited thereto.

[0071] According to the present disclosure, the vibration member 131 may be at least one of the side window 241 , the rear window 242 , and the top window.

[0072] The acoustic device 30 according to one embodiment of the present disclosure may be transparent. For example, the acoustic device 30 may be made of a transparent material layer. For example, the acoustic device 30 may be a transparent acoustic device.

[0073] According to the present disclosure, the acoustic device 30 or the vibration component may include a vibration layer 11a. The vibration layer 11a may include a first surface and a second surface different from (or opposite to) the first surface.

[0074] According to the present disclosure, the acoustic device 30 may include a first electrode layer 11b and a second electrode layer 11c. The first electrode layer 11b may be disposed on a first surface of the vibration layer 11a. The second electrode layer 11c may be disposed on a second surface of the vibration layer 11a. The second electrode layer 11c may be disposed on a second surface of the vibration layer 11a that is different from the first surface of the vibration layer 11a.

[0075] For example, the vibration layer 11a may be provided on the first electrode layer 11b, and the second electrode layer 11c may be provided on the vibration layer 11a.

[0076] For example, the vibration layer 11a may include a piezoelectric material (or electroactive material) having a piezoelectric effect. For example, the piezoelectric material (or piezoelectric device) may have the following characteristics: by applying pressure or distortion to the crystal structure by an external force, a potential difference appears due to dielectric polarization caused by the relative position change of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on the voltage applied thereto. For example, the vibration layer 11a may be a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric composite layer, a piezoelectric composite body, or a piezoelectric ceramic composite body, but the embodiments of the present disclosure are not limited thereto.

[0077] For example, the vibration layer 11a may be made of a material that can crystallize at a low heat treatment temperature. For example, the vibration layer 11a may include one of a PZT-based material, a KNN-based material, a BT-based material, a Bi-based material, and AlN, but the embodiments of the present disclosure are not limited thereto. The lead zirconate titanate (PZT)-based material may include lead (Pb), zirconium (Zr), and titanium (Ti). The KNN-based material may be (K,Na)NbO3. The BT-based material may be BaTiO3, but the embodiments of the present disclosure are not limited thereto. The Bi-based material may be BiFeO3, BiNaTiO3, Bi(Na,K)TiO3-BaTiO3-(K,Na)NbO3, etc., but the embodiments of the present disclosure are not limited thereto.

[0078] As another example, the KNN-based material may be represented by the following formula 1, but the embodiments of the present disclosure are not limited thereto.

[0079] Formula 1

[0080] 0.96(Na a K 1-a )(Nb b T 1-b )O3-(0.04-x)MZrO3-x(Bi c Ag 1-c )ZrO3 (T = Sb, Ta), (M = Sr, Ba, Ca)

[0081] In this case, a may be 0.4 < a < 0.6, b may be 0.90 < b < 0.98, c may be 0.4 < c < 0.6, d may be 0 ≤ d < 5.0, and x may be 0 ≤ x < 0.04.

[0082] According to the present disclosure, formula 1 may be doped with Y2O3, La2O3, or LiF, but is not limited thereto. Therefore, since the pores of the vibration layer 11a can be removed, a vibration layer 11a having high-density characteristics can be configured.

[0083] For example, the first electrode layer 11b and the second electrode layer 11c may include a transparent conductive material or a semi-transparent conductive material. For example, the transparent conductive material or the semi-transparent conductive material may include one or more of indium tin oxide (ITO) or indium zinc oxide (IZO), but the embodiments of the present disclosure are not limited thereto. Therefore, when the vibration member 131 is made of glass, the transmittance of the vibration member 131 can be improved because the first electrode layer 11b and the second electrode layer 11c are made of a transparent material or a semi-transparent material. As another example, the first electrode layer 11b and the second electrode layer 11c may be made of a conductive metal. For example, the first electrode layer 11b and the second electrode layer 11c may be made of one of aluminum (Al), copper (Cu), nickel (Ni), gold (Au), silver (Ag), tin (Sn), platinum (Pt), molybdenum (Mo) and tungsten (W) or a compound thereof, but the embodiments of the present disclosure are not limited thereto. As another example, the first electrode layer 11b and the second electrode layer 11c may be formed in a grid form, but the embodiments of the present disclosure are not limited thereto.

[0084] For example, the first electrode layer 11b may be larger than the second electrode layer 11c, but the embodiments of the present disclosure are not limited thereto. For example, the vibration layer 11a may be larger than the second electrode layer 11c, but the embodiments of the present disclosure are not limited thereto. For example, the vibration layer 11a may surround the second electrode layer 11c.

[0085] For example, the thickness of the first electrode layer 11b may be the same as the thickness of the second electrode layer 11c, but the embodiments of the present disclosure are not limited thereto. For example, the thickness of the vibration layer 11a may be less than the thickness of the first electrode layer 11b and the thickness of the second electrode layer 11c, but the embodiments of the present disclosure are not limited thereto. For example, the thickness of the first electrode layer 11b and the thickness of the second electrode layer 11c may be 0.02 μm to 1.0 μm, but the embodiments of the present disclosure are not limited thereto. For example, the thickness of the vibration layer 11a may be 0.1 μm to 1.2 μm, but the embodiments of the present disclosure are not limited thereto. Since the thickness of the first electrode layer 11b, the thickness of the second electrode layer 11c and / or the thickness of the vibration layer 11a can be adjusted, the transparent characteristics of the acoustic device 30 or the vibration device can be improved.

[0086] The acoustic device 30 or vibration device may include a first wire 13 and a second wire 15. The first wire 13 may be connected to the first electrode layer 11b. For example, the first wire 13 may be disposed on one side of the first electrode layer 11b. The first wire 13 may be in contact with or directly in contact with the vibration member 131. The second wire 15 may be connected to the second electrode layer 11c. For example, the second wire 15 may be connected to a portion of the upper surface of the second electrode layer 11c. The second wire 15 may be in contact with or directly in contact with the vibration member 131.

[0087] The first wire 13 and the second wire 15 may be made of a conductive material. For example, each of the first wire 13 and the second wire 15 may be a conductive member or a conductive tape, but the embodiments of the present disclosure are not limited thereto. For example, the first wire 13 and the second wire 15 may be conductive wires formed by coating and curing a conductive material.

[0088] The driving signal can be applied to the acoustic device 30 or the vibration device through the first wire 13 and the second wire 15. Therefore, the acoustic device 30 or the vibration device can be configured to vibrate (or shift or drive) according to the driving signal (or vibration driving signal or voice signal) applied thereto, thereby vibrating (or shifting or driving) the vibration member 131.

[0089] According to the present disclosure, a portion of the first wire 13 and the second wire 15 may be a pad portion. The pad portion, which is a portion of the first wire 13 and the second wire 15, may be electrically connected to a vibration drive circuit (or a sound drive circuit). The vibration drive circuit (or the sound drive circuit) may be electrically connected to the pad portion via a signal cable (or a signal supply member). For example, the signal cable may be transparent. For example, the signal cable may include a transparent signal line.

[0090] The acoustic device 30 or vibration device may further include an insulating layer 17 surrounding the second electrode layer 11c. For example, the insulating layer 17 may be on one or more sides of the vibration layer 11a and the second electrode layer 11c. For example, the insulating layer 17 may be on one or more sides of the first vibration layer 11a and the second electrode layer 11c. The insulating layer 17 may be on each side of the vibration layer 11a and the second electrode layer 11c, as well as on one side of the first electrode layer 11b. The insulating layer 17 may be made of zinc oxide (ZnO) or aluminum oxide (Al2O3), but the embodiments of the present disclosure are not limited thereto.

[0091] For example, the second wire 15 may be provided on a portion of the upper surface of the second electrode layer 11c and surround the insulating layer 17. The second wire 15 may be configured to cover a portion of the upper surface of the second electrode layer 11c and the insulating layer 17.

[0092] According to the present disclosure, an adhesive member may be further provided between the substrate or the vibration member 131 and the first electrode layer 11b. The adhesive member may improve the adhesion between the vibration member 131 and the first electrode layer 11b. For example, the adhesive member may include epoxy resin, acrylic resin, silicone resin, or polyurethane resin, but the embodiments of the present disclosure are not limited thereto.

[0093] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0094] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0095] The acoustic device 30 or the vibration device according to the present disclosure may be provided on the vibration member 131 made of glass, and a transparent acoustic device 30 or a transparent vibration device may be provided.

[0096] According to the present disclosure, the acoustic device 30 may be provided to be integrated with the vibration member 131 or a vehicle interior material. For example, a vehicle interior material integrated with the acoustic device 30 may be implemented.

[0097] A method of manufacturing the acoustic apparatus 30 or the vibration device according to the present disclosure can be described as follows.

[0098] As an example, a method of forming the acoustic device 30 or the vibration device in a vehicle or an interior material of the vehicle will be described based on a sputtering process, but the embodiments of the present disclosure are not limited thereto. The vehicle or the interior material of the vehicle may be transparent glass or a transparent glass substrate.

[0099] In order to construct the transparent vibration layer by using a sputtering process, a parent material for forming a piezoelectric thin film may be manufactured. Although the following description will be based on a method of manufacturing a KNN-based parent material as an example, the embodiments of the present disclosure are not limited thereto.

[0100] The matrix material used to manufacture the vibration layer 11a may be crack-free and uniform, and may require high density characteristics. For example, the matrix material may be manufactured by a non-template grain growth (non-TGG) method, but the embodiments of the present disclosure are not limited thereto.

[0101] The method for manufacturing the matrix material may include weighing raw materials (S110), mixing the raw materials (S120), calcining and synthesizing the mixed raw materials, pulverizing the synthesized matrix material, preparing a molded body by molding the matrix material, and sintering the molded body to prepare a sintered body. In the following description, the conditions (e.g., temperature, pressure, and time) of the method for manufacturing the vibration layer 11a do not limit the content of the present disclosure.

[0102] First, the step of weighing the raw materials can be a step of weighing the raw materials based on a molar ratio to add an appropriate amount of solvent. For example, the step of weighing the raw materials can be a process of weighing the raw materials at a molar ratio suitable for the composition to be synthesized, placing the raw materials in a nylon tank, and adding an appropriate amount of solvent (e.g., ethanol), but embodiments of the present disclosure are not limited thereto.

[0103] Subsequently, the step of mixing the raw materials may be to mix and grind the weighed raw materials and the solvent (ethanol) by ball milling. For example, the ball milling process may be to place the weighed raw materials, YSZ balls, and the solvent into a Nalgene bottle, and then the ball milling process may be performed for 12 to 36 hours, but the embodiments of the present disclosure are not limited thereto.

[0104] Embodiments of the present disclosure may further include a drying step after the mixing step to separate the powder mixed with the solvent. The drying step may be performed by separating the ground raw material from the balls, discharging the raw material, placing the mixed raw material in a pan, and drying it at 90°C to 100°C for 3 hours, but the embodiments of the present disclosure are not limited thereto. Thus, ethanol mixed with the raw material can be removed.

[0105] Subsequently, embodiments of the present disclosure may include a step of calcining the raw materials. The step of calcining the raw materials may be a raw material that is initially mixed in a phase-synthesis. The phase-synthesis step includes finely grinding the dried mixture after mixing is completed, placing it in an alumina crucible, and heating it in an electric furnace at a heating rate of 5°C / min until it reaches 400°C, and then maintaining the temperature for 30 minutes. The calcining step may include calcining the compound at 400°C to 1000°C for 3 to 6 hours, cooling at room temperature (or normal temperature) or naturally cooling the calcined compound, but embodiments of the present disclosure are not limited thereto. For example, the calcining temperature may be 400°C to 1000°C, and the holding time may be 1 to 6 hours, but embodiments of the present disclosure are not limited thereto.

[0106] Subsequently, the step of grinding the calcined matrix material may include placing the matrix material, YSZ balls, and a solvent (ethanol) into a Legene bottle and grinding the matrix material by a ball milling process to form small particles, but the embodiments of the present disclosure are not limited thereto.

[0107] In addition, the grinding step may further include a drying step for separating the powder mixed with the solvent after the grinding step. Here, the drying step may place the ground matrix material in a tray and fully dry the ground matrix material at a temperature of 90° C. to 100° C. For example, the drying may be performed for 3 hours, but the embodiments of the present disclosure are not limited thereto.

[0108] According to an embodiment of the present disclosure, the step of grinding the synthesized matrix material may further include screening the material.

[0109] The sieving step may be filtering the dry powder finely ground by the mortar through a 40-mesh sieve to produce a powder including particles having a size below a certain size. The powder passing through the 40-mesh sieve may have a size below 400 μm, but the embodiments of the present disclosure are not limited thereto.

[0110] Next, the step of preparing a molded body by molding (or compression molding) the slurry may be a step of manufacturing a molded body having a predetermined volume and shape from the granular matrix material prepared in the previous step.

[0111] For example, a molded body can be prepared by placing a granular matrix material into a molding die and performing a pressurization process. For example, the pressurization process can include uniaxial pressing or hot pressing and cold isostatic pressing, but the embodiments of the present disclosure are not limited thereto. The high-density characteristics of the vibration layer can be improved by the pressurization process.

[0112] Next, the step of preparing a sintered body by sintering the molded body may be the following steps: placing the molded body in a furnace, keeping the molded body for 30 minutes after raising the room temperature of 25°C to 400°C at a heating rate of 5°C / min, keeping the molded body for 6 hours after raising the temperature of 400°C to 1090°C at a heating rate of 5°C / min, cooling the molded body at room temperature (or room temperature) or naturally cooling the molded body, but the embodiments of the present disclosure are not limited thereto. Additives may be further added in the sintering process. For example, the additive may include an oxide or an inorganic compound, but the embodiments of the present disclosure are not limited thereto. The oxide may include cobalt oxide, aluminum oxide, or iron oxide, but the embodiments of the present disclosure are not limited thereto. For example, the oxide may be CoO, Al2O3, Co3O4, or Fe2O3, but the embodiments of the present disclosure are not limited thereto. The inorganic compound may be a chlorine (Cl)-based compound or a fluorine (F)-based compound, but the embodiments of the present disclosure are not limited thereto. Since additives are further added during the sintering process, the high-density characteristics of the vibration layer 11a can be improved.

[0113] According to another example, the sintering process of the matrix material may be spark plasma sintering or thermal isotropic sintering, but the embodiments of the present disclosure are not limited thereto.

[0114] Next, in a process of growing a sintered body (or vibration layer), the sintered body (or vibration layer) is used as a matrix material of the KNN base, and the process may include forming the sintered body on a vehicle interior material (or glass substrate) by vacuum deposition (or sputtering process).

[0115] For example, this step may include forming the first electrode layer 11b or growing the first electrode layer 11b using glass (which is an interior material of a vehicle) as a substrate. This step may include forming the vibration layer 11a or growing the vibration layer 11a after the step of forming the first electrode layer 11b or growing the first electrode layer 11b. The KNN-based material may be crystallized through a heat treatment process. The heat treatment process may be a firing process. The temperature during the heat treatment process may be 400°C, but the embodiments of the present disclosure are not limited thereto.

[0116] Next, the first and second lines 13 and 15 may be formed through an etching process.

[0117] Figure 5 is a diagram illustrating an acoustic device according to another embodiment of the present disclosure.

[0118] Reference Figure 5 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 or a vibration device provided on a vibration member 131 .

[0119] According to another embodiment of the present disclosure, the acoustic device 30 or the vibration device may include a first vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. Figure 3 and Figure 4 The contents described in are basically the same, so the same figure marks will be given and their redundant descriptions will be omitted.

[0120] According to another embodiment of the present disclosure, the acoustic device 30 or the vibration device may further include a second vibration layer 23. The vibration layer 11a may be a first vibration layer 11a.

[0121] For example, the second vibration layer 23 can be disposed below the vibration layer or the first vibration layer 11a. Thus, the second vibration layer 23 can enable the first vibration layer 11a to be stably formed or grown in the (001) direction before the first vibration layer 11a is formed or deposited. For example, the second vibration layer 23 can be a seed layer, but the embodiments of the present disclosure are not limited thereto.

[0122] The first vibration layer 11a may be located on or disposed on the first electrode layer 11b. The second electrode layer 11c may be located on or disposed on the first vibration layer 11a. The second vibration layer 23 may be disposed between the first electrode layer 11b and the first vibration layer 11a.

[0123] For example, the second vibration layer 23 may include a piezoelectric material. The second vibration layer 23 may be made of the same material as the first vibration layer 11a, but the embodiments of the present disclosure are not limited thereto. For example, the second vibration layer 23 may be made of a material having a perovskite structure, but the embodiments of the present disclosure are not limited thereto. For example, the second vibration layer 23 may include NaNbO3, SrTiO3, CaZrO3, BaZrO3, (K,Na)NbO3, etc., but the embodiments of the present disclosure are not limited thereto.

[0124] The thickness of the second vibration layer 23 can be equal to or less than the thickness of the first vibration layer 11a, but the embodiments of the present disclosure are not limited to this. For example, the thickness of the second vibration layer 23 can be less than 0.5 μm or less than 0.3 μm, but the embodiments of the present disclosure are not limited to this. If the thickness of the second vibration layer 23 is greater than the thickness of the first vibration layer 11a, the piezoelectric properties are lower than those of the first vibration layer 11a, and thus sufficient sound pressure characteristics cannot be achieved.

[0125] The size of the second vibration layer 23 may be the same as that of the first vibration layer 11 a , but embodiments of the present disclosure are not limited thereto.

[0126] According to another embodiment of the present disclosure, the acoustic device 30 or the vibration device may further include an adhesive member 21. The adhesive member 21 may be disposed between the substrate or the vibration member 131 and the first electrode layer 11b. The acoustic device 30 or the vibration device may be connected to or bonded to the substrate or the vibration member 131 via the adhesive member 21. For example, the acoustic device 30 or the vibration device may be connected to or bonded to the first surface of the substrate or the vibration member 131 via the adhesive member 21.

[0127] For example, the adhesive member 21 may include epoxy resin, acrylic resin, silicone resin, or polyurethane resin, but the embodiments of the present disclosure are not limited thereto.

[0128] For example, the adhesive member 21 may include an adhesive layer (or bonding layer) having excellent tack or adhesive force. For example, the adhesive member 21 may include an adhesive, a double-sided adhesive, a double-sided tape, a double-sided adhesive tape, a double-sided adhesive foam tape, a double-sided foam pad, a double-sided adhesive foam pad, a double-sided buffer tape, or an adhesive sheet, but the embodiments of the present disclosure are not limited thereto.

[0129] The acoustic device 30 or vibration device may include a first wire 13 and a second wire 15. The first wire 13 may be connected to the first electrode layer 11b. For example, the first wire 13 may be provided on one side of the first electrode layer 11b. For example, the first wire 13 may be formed on a side of the first electrode layer 11b and a side of the adhesive member 21. The first wire 13 may be in contact with or directly in contact with the vibration member 131. The second wire 15 may be connected to the second electrode layer 11c. For example, the second wire 15 may be connected to a portion of the upper surface of the second electrode layer 11c. The second wire 15 may be in contact with or directly in contact with the vibration member 131.

[0130] The acoustic device 30 or vibration device may further include an insulating layer 25 surrounding the second electrode layer 11c. For example, the insulating layer 25 may be disposed on one or more sides of the first vibration layer 11a and the second electrode layer 11c. The insulating layer 25 may be disposed on the sides of the first vibration layer 11a, the second electrode layer 11c, and the second vibration layer 23. The insulating layer 25 may be made of zinc oxide (ZnO) or aluminum oxide (Al2O3), but the embodiments of the present disclosure are not limited thereto.

[0131] For example, the second wire 15 may be disposed on a portion of the upper surface of the second electrode layer 11c and surround the insulating layer 25. The second wire 15 may be disposed to cover a portion of the upper surface of the second electrode layer 11c and the insulating layer 25.

[0132] Since the manufacturing method of the acoustic device 30 according to the present disclosure is Figure 3 and Figure 4 The manufacturing method described in is basically the same, so its description will be omitted.

[0133] The second vibration layer 23 may be made of a matrix material of NaNbO3 or SrTiO3, but the embodiments of the present disclosure are not limited thereto. The method of manufacturing the second vibration layer 23 using the matrix material may be performed in a process substantially the same as the method of manufacturing the first vibration layer 11a. Figure 3 and Figure 4 The contents described in are basically the same, so their description will be omitted.

[0134] Refer to it together Figure 2 A vehicle according to another embodiment of the present disclosure may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0135] Refer to it together Figure 2The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0136] According to another embodiment of the present disclosure, since the second vibration layer 23 is disposed below the first vibration layer 11 a , the first vibration layer 11 a may be stably disposed by the second vibration layer 23 .

[0137] Figure 6 is a diagram illustrating an acoustic device according to another embodiment of the present disclosure.

[0138] Reference Figure 6 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 or a vibration device provided on a vibration member 131 .

[0139] According to another embodiment of the present disclosure, the acoustic device 30 or the vibration device may include a first vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. Figure 3 and Figure 4 The contents described in are substantially the same, and thus will be given the same reference numerals, and their redundant description will be omitted. The acoustic device according to another embodiment of the present disclosure may further include a second vibration layer 23. Since the description of the second vibration layer 23 is the same as that of Figure 5 The contents described in are basically the same, so the same figure marks will be given and their redundant descriptions will be omitted.

[0140] According to another embodiment of the present disclosure, a vehicle may further include an auxiliary layer 40. The description of the auxiliary layer 40 may also apply to Figure 4 and Figure 5 .

[0141] For example, the auxiliary layer 40 may be provided on the second electrode layer 11c. The auxiliary layer 40 may be made of a material having the same reflectivity as the second electrode layer 11c, but the embodiments of the present disclosure are not limited thereto. For example, the auxiliary layer 40 may be made of a material having the same reflectivity as the second electrode layer 11c and the air layer, but the embodiments of the present disclosure are not limited thereto. For example, the auxiliary layer 40 may be a silicon-based compound or the like, but the embodiments of the present disclosure are not limited thereto. For example, the auxiliary layer 40 may be tetraethyl orthosilicate (TEOS) or a silane coupling agent, but the embodiments of the present disclosure are not limited thereto. Therefore, the light transmittance of the acoustic device 30 may be improved.

[0142] Since the manufacturing method of the acoustic device 30 according to the present disclosure is Figure 3 and Figure 4The manufacturing method described in is basically the same, so its description will be omitted.

[0143] The second vibration layer 23 may be made of a matrix material of NaNbO3 or SrTiO3, but the embodiments of the present disclosure are not limited thereto. The method of manufacturing the second vibration layer 23 using the matrix material may be performed in a process substantially the same as the method of manufacturing the first vibration layer 11a. Figure 3 and Figure 4 The manufacturing method described in is basically the same, so its description will be omitted.

[0144] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0145] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0146] According to another embodiment of the present disclosure, since the auxiliary layer 40 is further provided, an acoustic device having improved transmittance may be provided.

[0147] Figure 7 is a diagram illustrating an acoustic device according to another embodiment of the present disclosure.

[0148] Reference Figure 7 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 or a vibration device provided on a vibration member 131 .

[0149] According to another embodiment of the present disclosure, the acoustic device 30 or the vibration device may include a vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. Figure 3 and Figure 4 The contents described in are substantially the same, and thus will be given the same reference numerals, and their redundant description will be omitted. The acoustic device according to another embodiment of the present disclosure may further include a second vibration layer 23. Since the description of the second vibration layer 23 is the same as that of Figure 5 , and thus will be given the same figure marks, and their redundant descriptions will be omitted.

[0150] The acoustic device according to another embodiment of the present disclosure may further include an auxiliary layer 42. The description of the auxiliary layer 42 may also apply to Figure 4 and Figure 5 .

[0151] For example, the auxiliary layer 42 can be provided on the second electrode layer 11c. The auxiliary layer 42 can be made of a material having the same impedance as the second vibration layer 23, but the embodiments of the present disclosure are not limited thereto. For example, the auxiliary layer 42 can be made of a material having the same impedance as the second vibration layer 23 and one of the second electrode layer 11c, but the embodiments of the present disclosure are not limited thereto. For example, the auxiliary layer 42 can be made of a material having the same impedance as one of the second vibration layer 23, the second electrode layer 11c, and the air layer, but the embodiments of the present disclosure are not limited thereto. For example, the auxiliary layer 42 can be an acrylic-based or silicon-based material, but the embodiments of the present disclosure are not limited thereto. Therefore, the sound pressure characteristics and / or sound characteristics of the acoustic device 30 can be improved.

[0152] According to another embodiment of the present disclosure, since the auxiliary layer 42 is further provided, the acoustic device 30 having improved sound pressure characteristics and / or sound characteristics may be provided.

[0153] Since the manufacturing method of the acoustic device 30 according to the present disclosure is Figure 3 and Figure 4 The manufacturing method described in is basically the same, so its description will be omitted.

[0154] The second vibration layer 23 may be made of a matrix material of NaNbO3 or SrTiO3, but the embodiments of the present disclosure are not limited thereto. The method of manufacturing the second vibration layer 23 using the matrix material may be performed in a process substantially the same as the method of manufacturing the first vibration layer 11a. Figure 3 and Figure 4 The manufacturing method described in is basically the same, so its description will be omitted.

[0155] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0156] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0157] Figure 8 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0158] Reference Figure 8 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 provided on a vibration member 131 .

[0159] According to another embodiment of the present disclosure, the acoustic device 30 may include one or more vibration devices. For example, the one or more vibration devices may include two vibration devices 30a and 30b. For example, the two vibration devices 30a and 30b may include a first vibration device 30a and a second vibration device 30b.

[0160] Each of the first vibration device 30a and the second vibration device 30b may include a first vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. As another example, each of the first vibration device 30a and the second vibration device 30b may include a first vibration layer 11a, a first electrode layer 11b, a second electrode layer 11c, and a second vibration layer 23. Figures 3 to 5 The contents described in are basically the same, so their description will be omitted.

[0161] Each of the first and second vibration devices 30 a and 30 b may include a first wire 13 and a second wire 15 .

[0162] The first electrode layer 11b of each of the first vibration device 30a and the second vibration device 30b can be connected to the first wire 13 of each of the first vibration device 30a and the second vibration device 30b. For example, the first electrode layer 11b of the first vibration device 30a can be connected to the first wire 13 of the first vibration device 30a. For example, the first electrode layer 11b of the second vibration device 30b can be connected to the first wire 13 of the second vibration device 30b.

[0163] The second electrode layer 11c of each of the first vibration device 30a and the second vibration device 30b can be connected to the second wire 15 of each of the first vibration device 30a and the second vibration device 30b. For example, the second electrode layer 11c of the first vibration device 30a can be connected to the second wire 15 of the first vibration device 30a. For example, the second electrode layer 11c of the second vibration device 30b can be connected to the second wire 15 of the second vibration device 30b. Therefore, the acoustic device 30 according to another embodiment of the present disclosure can be implemented as two channels.

[0164] According to the present disclosure, an acoustic device 30 integrated with a vibration member 131 or a vehicle interior material can be provided. For example, a vehicle interior material integrated with the acoustic device 30 can be implemented. For example, a vehicle interior material integrated with the acoustic device 30 capable of implementing two channels can be configured.

[0165] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0166] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0167] Figure 9 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0168] Reference Figure 9 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 provided on a vibration member 131 .

[0169] According to another embodiment of the present disclosure, the acoustic device 30 may include one or more vibration devices. For example, the one or more vibration devices may include two vibration devices 30a and 30b. For example, the two vibration devices 30a and 30b may include a first vibration device 30a and a second vibration device 30b.

[0170] Each of the first vibration device 30a and the second vibration device 30b may include a first vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. As another example, each of the first vibration device 30a and the second vibration device 30b may include a first vibration layer 11a, a first electrode layer 11b, a second electrode layer 11c, and a second vibration layer 23. Figures 3 to 5 The contents described in are substantially the same, so the same figure marks will be given and their repeated descriptions will be omitted.

[0171] The first and second vibration devices 30 a and 30 b may include a first wire 13 and second wires 15 a and 15 b .

[0172] The first electrode layer 11b of each of the first vibration device 30a and the second vibration device 30b may be commonly connected to the first wire 13. For example, the first electrode layer 11b of the first vibration device 30a may be commonly connected to the first wire 13 of the first vibration device 30a. For example, the first electrode layer 11b of the second vibration device 30b may be commonly connected to the first wire 13 of the second vibration device 30b.

[0173] The second electrode layer 11c of each of the first vibration device 30a and the second vibration device 30b can be connected to the second wires 15a and 15b of each of the first vibration device 30a and the second vibration device 30b. For example, the second electrode layer 11c of the first vibration device 30a can be connected to the second wire 15a of the first vibration device 30a. For example, the second electrode layer 11c of the second vibration device 30b can be connected to the second wire 15b of the second vibration device 30b.

[0174] According to the present disclosure, an acoustic device 30 can be provided that is integrated with a vibration member 131 or a vehicle interior material. For example, a vehicle interior material integrated with the acoustic device 30 can be implemented. For example, since the first vibration device 30a and the second vibration device 30b are commonly connected to the first wire 13, the acoustic device 30 can be implemented with a simplified process.

[0175] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0176] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0177] Figure 10 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0178] Reference Figure 10 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 provided on a vibration member 131 .

[0179] According to another embodiment of the present disclosure, the acoustic device 30 may include one or more vibration devices. For example, the one or more vibration devices may include four vibration devices 30a, 30b, 30c, and 30d. For example, the four vibration devices 30a, 30b, 30c, and 30d may include a first vibration device 30a, a second vibration device 30b, a third vibration device 30c, and a fourth vibration device 30d.

[0180] Each of the first vibration device 30a, the second vibration device 30b, the third vibration device 30c, and the fourth vibration device 30d may include a first vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. As another example, each of the first vibration device 30a, the second vibration device 30b, the third vibration device 30c, and the fourth vibration device 30d may include a first vibration layer 11a, a first electrode layer 11b, a second electrode layer 11c, and a second vibration layer 23. Figures 3 to 5 The vibration devices described in are substantially the same, and thus will be given the same figure numerals, and their repeated descriptions will be omitted.

[0181] Each of the first vibrating device 30 a , the second vibrating device 30 b , the third vibrating device 30 c , and the fourth vibrating device 30 d may include a first wire 13 and a second wire 15 .

[0182] The first electrode layer 11b of each of the first vibrating device 30a, the second vibrating device 30b, the third vibrating device 30c, and the fourth vibrating device 30d can be connected to the first wire 13 of each of the first vibrating device 30a, the second vibrating device 30b, the third vibrating device 30c, and the fourth vibrating device 30d. For example, the first electrode layer 11b of the first vibrating device 30a can be connected to the first wire 13 of the first vibrating device 30a. For example, the first electrode layer 11b of the second vibrating device 30b can be connected to the first wire 13 of the second vibrating device 30b. For example, the first electrode layer 11b of the third vibrating device 30c can be connected to the first wire 13 of the third vibrating device 30c. For example, the first electrode layer 11b of the fourth vibrating device 30d can be connected to the first wire 13 of the fourth vibrating device 30d.

[0183] The second electrode layer 11c of each of the first, second, third, and fourth vibration devices 30a, 30b, 30c, and 30d can be connected to the second wire 15 of each of the first, second, third, and fourth vibration devices 30a, 30b, 30c, and 30d. For example, the second electrode layer 11c of the first vibration device 30a can be connected to the second wire 15 of the first vibration device 30a. For example, the second electrode layer 11c of the second vibration device 30b can be connected to the second wire 15 of the second vibration device 30b. For example, the first electrode layer 11b of the third vibration device 30c can be connected to the second wire 15 of the third vibration device 30c. For example, the first electrode layer 11b of the fourth vibration device 30d can be connected to the second wire 15 of the fourth vibration device 30d. Therefore, the acoustic device 30 according to another embodiment of the present disclosure can be implemented with four channels. According to the present disclosure, the number of channels can be easily controlled within the same process of the acoustic device 30.

[0184] According to the present disclosure, an acoustic device 30 integrated with a vibration member 131 or a vehicle interior material can be provided. For example, a vehicle interior material integrated with the acoustic device 30 can be implemented. For example, a vehicle interior material integrated with the acoustic device 30 capable of implementing four channels can be configured.

[0185] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0186] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0187] Figure 11 is a plan view illustrating an acoustic apparatus according to another embodiment of the present disclosure.

[0188] Reference Figure 11 , a vehicle according to another embodiment of the present disclosure may include an acoustic device 30 provided on a vibration member 131 .

[0189] According to another embodiment of the present disclosure, the acoustic device 30 may include one or more vibration devices. For example, the one or more vibration devices may include four vibration devices 30a, 30b, 30c, and 30d. For example, the four vibration devices 30a, 30b, 30c, and 30d may include a first vibration device 30a, a second vibration device 30b, a third vibration device 30c, and a fourth vibration device 30d.

[0190] Each of the first vibration device 30a, the second vibration device 30b, the third vibration device 30c, and the fourth vibration device 30d may include a first vibration layer 11a, a first electrode layer 11b, and a second electrode layer 11c. As another example, each of the first vibration device 30a, the second vibration device 30b, the third vibration device 30c, and the fourth vibration device 30d may include a first vibration layer 11a, a first electrode layer 11b, a second electrode layer 11c, and a second vibration layer 23. Figures 3 to 5 The vibration devices described in are substantially the same, and thus will be given the same figure numerals, and their repeated descriptions will be omitted.

[0191] Each of the first vibrating device 30 a , the second vibrating device 30 b , the third vibrating device 30 c , and the fourth vibrating device 30 d may include a first wire 13 and a second wire 15 .

[0192] According to the present disclosure, the first electrode layer 11b of each of the first vibration device 30a, the second vibration device 30b, the third vibration device 30c, and the fourth vibration device 30d can be commonly connected to the first line 13. The second electrode layer 11c in each of the first vibration device 30a, the second vibration device 30b, the third vibration device 30c, and the fourth vibration device 30d can be commonly connected to the second line 15.

[0193] According to the present disclosure, the first electrode layer 11b of the first vibration device 30a and the first electrode layer 11b of the second vibration device 30b can be connected to the first wire 13. For example, the first electrode layer 11b of the first vibration device 30a and the first electrode layer 11b of the second vibration device 30b can be commonly connected to the first wire 13. The second electrode layer 11c of the first vibration device 30a and the second electrode layer 11c of the second vibration device 30b can be connected to the second wire 15. For example, the second electrode layer 11c of the first vibration device 30a and the second electrode layer 11c of the second vibration device 30b can be commonly connected to the second wire 15.

[0194] According to the present disclosure, the first electrode layer 11b of the first vibration device 30a and the first electrode layer 11b of the third vibration device 30c can be connected to the first wire 13. For example, the first electrode layer 11b of the first vibration device 30a and the first electrode layer 11b of the third vibration device 30c can be commonly connected to the first wire 13. The second electrode layer 11c of the first vibration device 30a and the second electrode layer 11c of the third vibration device 30c can be connected to the second wire 15. For example, the second electrode layer 11c of the first vibration device 30a and the second electrode layer 11c of the third vibration device 30c can be commonly connected to the second wire 15.

[0195] According to the present disclosure, the first electrode layer 11b of the second vibration device 30b and the first electrode layer 11b of the fourth vibration device 30d can be connected to the first wire 13. For example, the first electrode layer 11b of the second vibration device 30b and the first electrode layer 11b of the fourth vibration device 30d can be commonly connected to the first wire 13. The second electrode layer 11c of the second vibration device 30b and the second electrode layer 11c of the fourth vibration device 30d can be connected to the second wire 15. For example, the second electrode layer 11c of the second vibration device 30b and the second electrode layer 11c of the fourth vibration device 30d can be commonly connected to the second wire 15.

[0196] According to the present disclosure, the first electrode layer 11b of the third vibration device 30c and the first electrode layer 11b of the fourth vibration device 30d can be connected to the first wire 13. For example, the first electrode layer 11b of the third vibration device 30c and the first electrode layer 11b of the fourth vibration device 30d can be commonly connected to the first wire 13. The second electrode layer 11c of the third vibration device 30c and the second electrode layer 11c of the fourth vibration device 30d can be connected to the second wire 15. For example, the second electrode layer 11c of the third vibration device 30c and the second electrode layer 11c of the fourth vibration device 30d can be commonly connected to the second wire 15.

[0197] Therefore, the acoustic device 30 according to another embodiment of the present disclosure may be implemented as one channel.

[0198] According to the present disclosure, an acoustic device 30 integrated with a vibration member 131 or a vehicle interior material can be provided. For example, a vehicle interior material integrated with the acoustic device 30 can be implemented. For example, a vehicle interior material integrated with the acoustic device 30 capable of implementing one channel can be configured.

[0199] Refer to it together Figure 2 The vehicle may include a vibration member 131 and an acoustic device 30 disposed on the vibration member 131. The vibration member 131 may be made of glass. The acoustic device 30 may be configured to vibrate the vibration member 131 or directly vibrate the vibration member 131, thereby outputting sound according to the vibration of the vibration member 131.

[0200] Refer to it together Figure 2 The acoustic device 30 may be configured to be transparent and may be disposed in a middle region or a peripheral region of the vehicle window 230. For example, the acoustic device 30 may be disposed in a middle region or a peripheral region of one or more of the side windows 241, the rear window 242, and the roof window.

[0201] An acoustic device and a vehicle including the acoustic device according to example embodiments of the present disclosure are described below.

[0202] An acoustic device according to one or more embodiments of the present disclosure may be configured to output sound on at least one of a vibration member and interior material of a vehicle. The acoustic device may include: a first electrode layer; a first vibration layer located on the first electrode layer; a second electrode layer located on the first vibration layer; a first wire connected to the first electrode layer and in contact with the vibration member; and a second wire connected to the second electrode layer and in contact with the vibration member.

[0203] According to one or more embodiments of the present disclosure, the first vibration layer may include one of a PZT-based material, a KNN-based material, a BT-based material, a Bi-based material, and AlN.

[0204] According to one or more embodiments of the present disclosure, the acoustic device may further include an insulating layer surrounding the first electrode layer, the first vibration layer, and the second electrode layer.

[0205] According to one or more embodiments of the present disclosure, a size of the second electrode layer may be smaller than a size of the first vibration layer.

[0206] According to one or more embodiments of the present disclosure, a size of the first electrode layer may be larger than a size of the second electrode layer.

[0207] According to one or more embodiments of the present disclosure, the acoustic apparatus may include two vibration devices, and the first electrode layer in each of the two vibration devices may be commonly connected to the first line.

[0208] According to one or more embodiments of the present disclosure, the acoustic device may include four vibration devices, and the first electrode layer in each of the four vibration devices may be commonly connected to the first line, and the second electrode layer in each of the four vibration devices may be commonly connected to the second line.

[0209] According to one or more embodiments of the present disclosure, the acoustic device may further include a second vibration layer between the first electrode layer and the first vibration layer.

[0210] According to one or more embodiments of the present disclosure, the second vibration layer may include a piezoelectric material.

[0211] According to one or more embodiments of the present disclosure, the acoustic device may further include an insulating layer surrounding the first electrode layer, the first vibration layer, the second electrode layer, and the second vibration layer.

[0212] According to one or more embodiments of the present disclosure, the acoustic device may further include an auxiliary layer on the second electrode layer.

[0213] According to one or more embodiments of the present disclosure, the auxiliary layer may be made of a material having the same reflectivity as that of the second electrode layer.

[0214] According to one or more embodiments of the present disclosure, the auxiliary layer may be made of a material having the same impedance as one of the second vibration layer and the second electrode layer.

[0215] According to one or more embodiments of the present disclosure, the thickness of the first vibration layer is equal to or may be thicker than the thickness of the second vibration layer.

[0216] According to one or more embodiments of the present disclosure, the acoustic apparatus may include two vibration devices, and the first electrode layer in each of the two vibration devices may be commonly connected to the first line.

[0217] According to one or more embodiments of the present disclosure, the acoustic device may include four vibration devices, and the first electrode layer in each of the four vibration devices may be commonly connected to the first line, and the second electrode layer in each of the four vibration devices may be commonly connected to the second line.

[0218] According to one or more embodiments of the present disclosure, a vehicle may include: a vibration component; an interior material; and at least one acoustic device, wherein the at least one acoustic device includes at least one of the above-mentioned acoustic devices, and the acoustic device may include: a first electrode layer; a first vibration layer, located on the first electrode layer; a second electrode layer, located on the first vibration layer; a first wire, connected to the first electrode layer and in contact with the vibration component; and a second wire, connected to the second electrode layer and in contact with the vibration component.

[0219] According to one or more embodiments of the present disclosure, the vibration member may include glass.

[0220] According to one or more embodiments of the present disclosure, the vibration member may be at least one of a side window, a rear window, and a roof window.

[0221] An acoustic device according to one or more embodiments of the present disclosure can be configured to output sound on at least one of a vibration member or interior material of a vehicle. The acoustic device includes a first electrode layer, a first vibration layer on the first electrode layer, a second electrode layer on the first vibration layer, and a second vibration layer between the first electrode layer and the first vibration layer.

[0222] According to one or more embodiments of the present disclosure, the first vibration layer and the second vibration layer may include a piezoelectric material.

[0223] According to one or more embodiments of the present disclosure, the acoustic device may further include an insulating layer surrounding the first electrode layer, the first vibration layer, the second electrode layer, and the second vibration layer.

[0224] According to one or more embodiments of the present disclosure, the acoustic device further includes an auxiliary layer on the second electrode layer.

[0225] According to one or more embodiments of the present disclosure, the auxiliary layer may be made of a material having the same reflectivity as that of the second electrode layer.

[0226] According to one or more embodiments of the present disclosure, the auxiliary layer may be made of a material having the same impedance as one of the second vibration layer and the second electrode layer.

[0227] According to one or more embodiments of the present disclosure, the thickness of the first vibration layer may be equal to the thickness of the second vibration layer or may be thicker than the thickness of the second vibration layer.

[0228] A vehicle according to one or more embodiments of the present disclosure may include: a vibration component; internal materials; and at least one acoustic device, wherein the at least one acoustic device may include at least one of the above-mentioned acoustic devices, the acoustic device including a first electrode layer, a first vibration layer on the first electrode layer, a second electrode layer on the first vibration layer, and a second vibration layer between the first electrode layer and the first vibration layer.

[0229] According to one or more embodiments of the present disclosure, the vibration member may include glass.

[0230] According to one or more embodiments of the present disclosure, the vibration member may be at least one of a side window, a rear window, and a roof window.

[0231] The acoustic device according to the embodiment of the present disclosure can be applied to an acoustic device arranged in a vehicle (or included in an acoustic device arranged in a vehicle). The acoustic device according to the embodiment of the present disclosure can be applied to a mobile device, a video phone, a smart watch, a watch phone, a wearable device, a foldable device, a rollable device, a bendable device, a flexible device, a curved device, a sliding device, a variable device, an electronic notepad, an electronic book, a portable multimedia player (PMP), a personal digital assistant (PDA), an MP3 player, a mobile medical device, a desktop personal computer (PC), a laptop computer, a netbook computer, a workstation, a navigation device, a car navigation device, a car display device, a car device, a cinema device, a cinema display device, a TV, a wallpaper display device, a sign device, a gaming device, a laptop computer, a display, a camera, a video camera, a household appliance, etc. In addition, the acoustic device according to some embodiments of the present disclosure can be applied to an organic light-emitting lighting device or an inorganic light-emitting lighting device (or included in an organic light-emitting lighting device or an inorganic light-emitting lighting device). When the acoustic device is applied to a lighting device (or included in a lighting device), the lighting device can play the role of lighting and a speaker. Furthermore, when the acoustic device of the present disclosure is applied to (or included in) a mobile device or the like, the acoustic device may be used as one or more of a speaker, a receiver, and a haptic device, but embodiments of the present disclosure are not limited thereto.

[0232] It is obvious to those skilled in the art that various modifications and variations can be made in the present disclosure without departing from the scope of the present disclosure. Therefore, the present disclosure is intended to cover the modifications and variations of the present disclosure within the scope of the claims and their equivalents.

Claims

1. An acoustic device arranged at at least one of a vibration member and an interior material of a vehicle and configured to output sound, in, The acoustic device comprises: a first electrode layer; a first vibration layer, located on the first electrode layer; a second electrode layer, located on the first vibration layer; a first wire connected to the first electrode layer and in contact with the vibration member; and The second wire is connected to the second electrode layer and in contact with the vibration member.

2. The acoustic device according to claim 1, wherein The first vibration layer includes one of a PZT-based material, a KNN-based material, a BT-based material, a Bi-based material, and AlN. 3 . The acoustic device according to claim 1 , further comprising an insulating layer surrounding the first electrode layer, the first vibration layer, and the second electrode layer.

4. The acoustic device according to claim 1, wherein The second electrode layer has a smaller size than the first vibration layer.

5. The acoustic device according to claim 1, wherein The size of the first electrode layer is larger than that of the second electrode layer. The acoustic device according to claim 1 , wherein The acoustic device includes two vibrating devices, and The first electrode layer in each of the two vibration devices is commonly connected to the first line.

7. The acoustic device according to claim 1, wherein The acoustic device includes four vibrating devices, and The first electrode layer in each of the four vibration devices is connected in common to the first line, and the second electrode layer in each of the four vibration devices is connected in common to the second line. 8 . The acoustic device according to claim 1 , further comprising a second vibration layer between the first electrode layer and the first vibration layer.

9. The acoustic device according to claim 8, wherein The second vibration layer includes a piezoelectric material. 10 . The acoustic device according to claim 8 , further comprising an insulating layer surrounding the first electrode layer, the first vibration layer, the second electrode layer, and the second vibration layer. The acoustic device according to claim 8 , further comprising an auxiliary layer on the second electrode layer.

12. The acoustic device according to claim 11, wherein The auxiliary layer is made of a material having the same reflectivity as that of the second electrode layer.

13. The acoustic device according to claim 11, wherein The auxiliary layer is made of a material having the same impedance as one of the second vibration layer and the second electrode layer.

14. The acoustic device according to claim 8, wherein The thickness of the first vibration layer is equal to or thicker than the thickness of the second vibration layer.

15. The acoustic device according to claim 8, wherein The acoustic device includes two vibrating devices, and The first electrode layer in each of the two vibration devices is commonly connected to the first line.

16. The acoustic device according to claim 8, wherein The acoustic device includes four vibrating devices, and The first electrode layer in each of the four vibration devices is connected in common to the first line, and the second electrode layer in each of the four vibration devices is connected in common to the second line.

17. A means of transport comprising: vibrating components; interior materials; as well as at least one acoustic device, Wherein, the at least one acoustic device comprises at least one acoustic device according to any one of claims 1-16.

18. The vehicle according to claim 17, wherein: The vibration member includes glass.

19. The vehicle according to claim 17, wherein: The vibration member is at least one of a side window, a rear window, and a roof window.

20. An acoustic device arranged at at least one of a vibration member and an interior material of a vehicle and configured to output sound, in, The acoustic device comprises: a first electrode layer; a first vibration layer, located on the first electrode layer; a second electrode layer, located on the first vibration layer; and The second vibration layer is located between the first electrode layer and the first vibration layer.

21. The acoustic device according to claim 20, wherein The first vibration layer and the second vibration layer include piezoelectric material. 22 . The acoustic device according to claim 20 , further comprising an insulating layer surrounding the first electrode layer, the first vibration layer, the second electrode layer, and the second vibration layer.

23. The acoustic device according to claim 20, further comprising an auxiliary layer on the second electrode layer.

24. The acoustic device according to claim 20, wherein The auxiliary layer is made of a material having the same reflectivity as that of the second electrode layer.

25. The acoustic device according to claim 23, wherein The auxiliary layer is made of a material having the same impedance as one of the second vibration layer and the second electrode layer.

26. The acoustic device of claim 20, wherein The thickness of the first vibration layer is equal to or thicker than the thickness of the second vibration layer.

27. A means of transport comprising: vibrating components; interior materials; as well as at least one acoustic device, Wherein, the at least one acoustic device comprises at least one acoustic device according to any one of claims 20-26.

28. The vehicle according to claim 27, wherein: The vibration member includes glass.

29. The vehicle according to claim 27, wherein: The vibration member is at least one of a side window, a rear window, and a roof window.

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