Device

Abstract

To provide an apparatus which can enhance a sound characteristic and a sound pressure characteristic of variously pitched sound bands.SOLUTION: The apparatus includes: a passive vibration member; a vibration device coupled to a rear surface of the passive vibration member; and a supporting member which covers the vibration device and supports the rear surface of the passive vibration member. The vibration device includes: a first vibration portion; a second vibration portion coupled to a periphery of the first vibration portion; and a connection portion coupled to a periphery of the second vibration portion and the rear surface of the passive vibration member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] TECHNICAL FIELD This specification relates to devices, and more particularly to devices capable of outputting sound. [Background technology]

[0002] The device includes a separate speaker or acoustic device to provide sound. The acoustic device has a vibration system that converts input electrical signals into physical vibrations. Piezoelectric speakers made of piezoelectric elements such as ferroelectric ceramics have the advantages of being lightweight and consuming low power, and are therefore used in a variety of applications.

[0003] The piezoelectric elements used in piezoelectric speakers have a limited vibration range (or displacement range), which poses a technical challenge in that it is difficult to improve the acoustic characteristics and sound pressure characteristics in various frequency ranges, for example, the mid-low range or the mid-high range. Summary of the Invention [Problem to be solved by the invention]

[0004] The inventor of the present specification recognized the technical problems mentioned above and conducted several experiments to realize a vibration device that can improve the acoustic characteristics and sound pressure characteristics of various frequency bands. Through several experiments, the inventor invented an apparatus including a new vibration device that can improve the sound pressure in the low frequency band.

[0005] The technical problem to be solved by this specification is to provide a device that can improve the acoustic characteristics and sound pressure characteristics of various sound ranges generated by vibration of a passive vibration member.

[0006] The technical problem to be solved by this specification is to provide a device that can improve the acoustic characteristics and sound pressure characteristics of the deep bass range or mid-to-high range generated by the vibration of a passive vibration member.

[0007] This specification SolutionThe problems to be solved are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person having ordinary skill in the art to which the technical idea of ​​this specification pertains from the following description. [Means for solving the problem]

[0008] The device according to the embodiment of the present specification includes a passive vibration member. , receiving A vibration device connected to the back surface of the active vibration member, and a support covering the vibration device and supporting the back surface of the passive vibration member. hold The vibration device includes a support member that supports the passive vibration member, and the vibration device includes a first vibration section, a second vibration section that is connected to the periphery of the first vibration section, and a connecting section that is connected to the periphery of the second vibration section and the back surface of the passive vibration member.

[0009] The device according to the embodiment of the present specification is a passive vibration member. , receiving A plurality of vibration devices connected to the back surface of the active vibration member, and a support covering the plurality of vibration devices and supporting the back surface of the passive vibration member. hold R support Each of the plurality of vibration devices includes a first active vibration member, a second-first active vibration member and a second-second active vibration member connected to the periphery of the first active vibration member so as to be parallel to each other with the center of the first active vibration member in between, and a connecting portion connected to each of the second-first active vibration member and the second-second active vibration member and to the back surface of a passive vibration member.

[0010] Specific details relating to various examples of this specification other than the means for solving the problems mentioned above are included in the following description and drawings. [Effects of the Invention]

[0011] According to the embodiments of the present specification, it is possible to improve the acoustic characteristics and sound pressure characteristics of the low frequency band generated by the vibration of the passive vibration member. possible Providing equipment As a companion Cut.

[0012] The above-mentioned problems to be solved, means for solving the problems, and effects do not specify essential features of the claims, and therefore the scope of the claims is not limited by the matters described in the content of the invention. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 illustrates an apparatus according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA' shown in FIG. [Figure 3] FIG. 3 is a perspective view showing the vibration device according to the first embodiment of the present specification shown in FIG. 2. [Figure 4] 1A and 1B are diagrams illustrating a vibration element according to an embodiment of the present specification. [Figure 5A] 5 is a diagram showing a first modified example of the piezoelectric layer shown in FIG. [Figure 5B] 5 is a diagram showing a second modified example of the piezoelectric layer shown in FIG. [Figure 6A] 3 is a diagram showing the vibration amplitude (or displacement amplitude) and displacement points of the vibration device caused by drive signals applied to the first vibration section and the second vibration section shown in FIG. 2. FIG. [Figure 6B] 4 is a diagram showing the vibration amplitude (or displacement amplitude) and displacement points of the vibration device due to the drive signals applied to the first vibration section and the second vibration section shown in FIG. 3. FIG. [Figure 7] 2 is another cross-sectional view taken along the line AA' shown in FIG. 1. FIG. [Figure 8] FIG. 10 is a perspective view showing a vibration device according to a second embodiment of the present specification. [Figure 9] FIG. 10 is a perspective view showing a vibration device according to a third embodiment of the present specification. [Figure 10] FIG. 10 is a perspective view showing a vibration device according to a fourth embodiment of the present specification. [Figure 11] FIG. 10 is a perspective view showing a vibration device according to a fifth embodiment of the present specification. [Figure 12] FIG. 1 is a block diagram showing a vibration drive circuit according to a first embodiment of the present specification. [Figure 13] FIG. 10 is a block diagram showing a vibration drive circuit according to a second embodiment of the present specification. [Figure 14] 2 is another cross-sectional view taken along the line AA' shown in FIG. 1. FIG. [Figure 15] 4 is a graph showing the acoustic output characteristics of the device according to the first example of the present specification. DETAILED DESCRIPTION OF THE INVENTION

[0014] The advantages and features of the present invention, as well as methods for achieving them, will become clearer with reference to the following detailed description of the embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be realized in various different forms. The embodiments are provided solely to complete the disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The present invention is defined solely by the scope of the claims.

[0015] The shapes, sizes, ratios, angles, numbers, etc. shown in the drawings for the purpose of explaining the embodiments of this specification are merely examples, and the specification is not limited to the details shown in the drawings. The same reference symbols refer to the same components throughout this specification. Furthermore, in describing this specification, if a detailed description of related prior art is deemed to unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When terms such as "comprise," "have," and "consist of" are used in this specification, other parts may be added unless "only" is used. When a component is expressed in the singular, the plural may also be included unless otherwise explicitly stated.

[0016] When interpreting elements, they are to be interpreted as including error ranges or tolerances even if there is no other explicit mention of error ranges.

[0017] When describing a positional relationship, for example, when the positional relationship of two parts is described using "above," "on top," "below," or "beside," one or more other parts may be located between the two parts, unless "immediately" or "directly" is used.

[0018] When describing a temporal relationship, for example, when the temporal sequence is described using "after," "following," "next," or "before," it can also include cases where the sequence is not consecutive, as long as "immediately" or "directly" is not used.

[0019] Although terms such as "first" and "second" are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, a first component referred to below may also be a second component within the technical concept of the present invention.

[0020] In describing components in this specification, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are used to distinguish the component from other components, and do not limit the nature, order, sequence, or number of the components. When a component is described as being "coupled," "coupled," or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, but that other components may be "intervening" between each component that may be indirectly coupled or connected unless otherwise explicitly stated.

[0021] "At least one" should be understood to include all combinations of one or more of the associated components. For example, the meaning of "at least one of the first, second, and third components" can include not only the first, second, or third component, but also all combinations of two or more of the first, second, and third components.

[0022] The features of the various embodiments of this specification may be partially or wholly combined or combined with each other, may be technically interlocked and driven in various ways, and each embodiment may be implemented independently of the others or may be implemented together in a related relationship.

[0023] The following detailed description of the present invention will be given with reference to the accompanying drawings and examples. The scales of the components shown in the drawings are different from the actual scales for the convenience of explanation, and are not limited to the scales shown in the drawings.

[0024] Figure 1 is 、 FIG. 2 is a diagram showing an apparatus according to an embodiment of the present specification. 、 FIG. 2 is a cross-sectional view taken along line AA' shown in FIG.

[0025] Referring to FIGS. 1 and 2, an apparatus according to an embodiment of the present disclosure may include a passive vibrating member 100 and a vibrating device 200 .

[0026] The "device" according to the embodiments of this specification includes a display device, an audio device, an audio generating device, a sound bar, an analog signage ( analog signage ), or digital signage ( digital signage ), but the examples of the present specification are not limited thereto.

[0027] The display device may include a display panel including a plurality of pixels that realize a black-and-white or color image, and a driver for driving the display panel. For example, the display panel may be a liquid crystal display panel, an organic light-emitting display panel, a light-emitting diode display panel, an electrophoretic display panel, an electrowetting display panel, a micro light-emitting diode display panel, or a quantum dot light-emitting display panel, but the embodiments of the present specification are not limited thereto. For example, in an organic light-emitting display panel, a pixel may include an organic light-emitting element such as an organic light-emitting layer, and the pixel may be a sub-pixel that realizes one of a plurality of colors that constitute a color image. Therefore, a "device" according to the embodiments of the present specification may be a finished product ( complete product or final product ) notebook computers, televisions, computer monitors, vehicle or automotive devices ( automotive apparatus ) or vehicle ( vehicle ) and other forms of electrical equipment ( equipment apparatus), mobile electronic devices such as smartphones or electronic pads ( Mobile electronics device ) and other electronic equipment ( Set electronic apparatus ) or set device ( set device or set apparatus ) can also be included.

[0028] The analog signage may be an advertising billboard, a poster, a guide board, or the like. The analog signage may include content such as text, pictures, and symbols. The content may be arranged so as to be visible from the passive vibration member 100 side of the device. The content may be directly attached to the passive vibration member 100, or a medium such as paper on which the content is attached by printing or the like may be attached to the passive vibration member 100.

[0029] The passive vibration member 100 can be vibrated by being driven (or vibrated) by the vibration device 200. For example, the passive vibration member 100 can generate one or more of vibration and sound by being driven by the vibration device 200.

[0030] The passive vibration member 100 according to the embodiment of the present specification may be a display panel including a display unit (or screen) having a plurality of pixels for realizing black and white or color images. Thus, the passive vibration member 100 can generate one or more of vibration and sound by driving the vibration device 200. For example, the passive vibration member 100 can vibrate by driving the vibration device 200 while displaying an image on the display unit, thereby generating or outputting sound synchronized with the image on the display unit.

[0031] The passive vibration member 100 according to other embodiments of the present specification may be a non-display panel instead of a display panel. For example, the passive vibration member 100 may be a vibration panel including one or more materials selected from the group consisting of wood, rubber, plastic, flexible glass, fiber, cloth, paper, metal, and leather, but the embodiments of the present specification are not limited thereto.

[0032] The passive vibration member 100 according to the embodiments of the present specification may be a vibration object, a display member, a display panel, a signage panel, a passive vibration plate, a front cover, a front member, a vibration panel, a sound panel, or a passive vibration panel, but the embodiments of the present specification are not limited thereto.

[0033] The vibration device 200 may be configured to vibrate the passive vibration member 100. The vibration device 200 may be configured to be coupled to the rear surface 100a of the passive vibration member 100. In this way, the vibration device 200 can vibrate the passive vibration member 100, thereby generating or outputting one or more of vibration and sound due to the vibration of the passive vibration member 100.

[0034] The vibration device 200 may be connected or coupled to the rear surface 100a of the passive vibration member 100. The vibration device 200 may be configured to vibrate the passive vibration member 100 by the composite vibration (or displacement) of the multiple active vibration members 210, 230. For example, the vibration device 200 may include multiple active vibration members 210, 230 connected such that portions of the active vibration members 210, 230 are overlapped or partially superimposed on each other, and may be configured to vibrate the passive vibration member 100 by the composite vibration (or displacement) of the multiple active vibration members 210, 230. In this way, the vibration device 200 can increase or maximize the displacement range (or vibration range) of the passive vibration member 100 by increasing the displacement range (or vibration range) due to the composite vibration (or displacement) of the multiple active vibration members 210, 230, thereby improving the acoustic characteristics and sound pressure characteristics in the low-frequency range generated by the vibration of the passive vibration member 100.

[0035] The device according to the embodiments herein may further include a support member 300 and a coupling member 350 .

[0036] The support member 300 may be disposed on the rear surface 100a of the passive vibration member 100. The support member 300 may be disposed on the rear surface 100a of the passive vibration member 100 so as to cover the vibration device 200. The support member 300 may be disposed on the rear surface 100a of the passive vibration member 100 so as to cover the entire rear surface 100a of the passive vibration member 100 and the vibration device 200. For example, the support member 300 may have the same size as the passive vibration member 100. For example, the support member 300 may be disposed on the rear surface 100a of the passive vibration member 100 so as to cover the entire vibration device 200 and the vibration device 200. GS ) can be sandwiched between the passive vibration member 100 and the passive vibration member 100 to cover the entire rear surface thereof. GS ) can be provided by a coupling member 350 disposed between the passive vibration member 100 and the support member 300 facing each other. GS ) can be expressed as an air gap, a containment space, a vibration space, or an acoustic chamber. However, these It is not limited to the term.

[0037] The support member 300 may include any one of glass, metal, and plastic materials. The support member 300 may include a laminated structure in which at least one of glass, metal, and plastic materials is laminated. For example, the support member 300 may be made of a material having relatively high rigidity or hardness compared to the passive vibration member 100. For example, the support member 300 may be a rear structure, a support structure, a support plate, a support cover, a rear cover, a housing, or a rear member. These It is not limited to the term.

[0038] Each of the passive vibration member 100 and the support member 300 may have, but is not limited to, a square or rectangular shape, and may have a polygonal, non-polygonal, circular, or elliptical shape. For example, when the device according to the embodiments of the present specification is applied to an acoustic device or an acoustic bar, each of the passive vibration member 100 and the support member 300 may have a rectangular shape with the length of the long side being at least twice the length of the short side, but the embodiments of the present specification are not limited thereto.

[0039] The coupling member 350 is configured to be coupled between the rear edge portion of the passive vibration member 100 and the front edge portion of the support member 300, thereby forming a gap space ( GS ) can be set up

[0040] The connecting member 350 according to the embodiment of the present disclosure may include an elastic material that is compressible and resilient while having adhesive properties. For example, the connecting member 350 may include, but is not limited to, a double-sided tape, a single-sided tape, or a double-sided adhesive foam pad, and may include an elastic pad such as a rubber pad or a silicone pad that is compressible and resilient while having adhesive properties. For example, the connecting member 350 may be made of an elastomer.

[0041] Optionally, the support member 300 may further include a side wall portion that supports the edge portion of the rear surface of the passive vibration member 100. The side wall portion of the support member 300 may be protruded or bent from the edge portion of the front surface of the support member 300 toward the edge portion of the rear surface of the passive vibration member 100, thereby forming a gap space ( GS ) may be provided. In this case, the coupling member 350 may be configured to be connected between the side wall portion of the support member 300 and the edge portion of the back surface of the passive vibration member 100. This allows the support member 300 to cover the vibration device 200 and support the back surface of the passive vibration member 100. For example, the support member 300 may cover the vibration device 200 and support the edge portion of the back surface of the passive vibration member 100.

[0042] Optionally, the passive vibration member 100 may further include a side wall portion connected to the front edge portion of the support member 300. The side wall portion of the passive vibration member 100 may be protruded or bent from the rear edge portion of the passive vibration member 100 toward the front edge portion of the support member 300, thereby forming a gap space ( GS) can be provided. The passive vibration member 100 can be increased in rigidity by the side wall portion. In this case, the coupling member 350 can be configured to be connected between the side wall portion of the passive vibration member 100 and the edge portion of the back surface of the support member 300. In this way, the support member 300 can cover the vibration device 200 and can be connected to the back surface (100) of the passive vibration member 100. a For example, the support member 300 can cover the vibration device 200 and support the edge portion of the back surface of the passive vibration member 100.

[0043] FIG. 3 is a perspective view showing the vibration device according to the first embodiment of the present specification shown in FIG.

[0044] 2 and 3, a vibration device 200 according to a first embodiment of the present specification may include a first vibration part 210, a second vibration part 230, and a connecting part 250.

[0045] The first vibrating part 210 may be disposed to face the rear surface 100a of the passive vibration member 100. For example, the first vibrating part 210 may be disposed between the rear surface 100a of the passive vibration member 100 and the support member 300. For example, the first vibrating part 210 may be disposed between the rear surface 100a of the passive vibration member 100 and the support member 300 so as to be spaced apart from the passive vibration member 100, without being directly connected to the passive vibration member 100. For example, the first vibrating part 210 may be a main vibrating part, a central vibrating part, or a first active vibrating part.

[0046] The first vibrating unit 210 according to the embodiment of the present specification may include a first active vibrating member 211. The first active vibrating member 211 may have a rectangular or square shape. The first active vibrating member 211 may be configured to vibrate (or displace) in a curved shape in response to a first driving signal input from the outside.

[0047] The second vibrating part 230 may be connected or coupled to the periphery of the first vibrating part 210. The second vibrating part 230 may be overlapped or superimposed on the periphery of the first vibrating part 210. For example, the second vibrating part 230 may be overlapped or superimposed on a portion of the periphery of the first vibrating part 210. The second vibrating part 230 may be connected or coupled to a portion of the periphery of the first vibrating part 210. For example, the second vibrating part 230 may be connected or coupled to an edge portion of the first vibrating part 210. For example, the second vibrating section 230 may be a sub-vibrating section, an auxiliary vibrating section, or a second active vibrating section.

[0048] The second vibrating unit 230 according to the embodiments of the present specification may include a plurality of second active vibrating members 231, 232. For example, the second vibrating unit 230 may include a 2-1 active vibrating member 231 and a 2-2 active vibrating member 232. For example, the second vibrating unit 230 may include 2N (N is a natural number) second active vibrating members 231, 232. For example, the 2N second active vibrating members 231, 232 may include a 2-1 active vibrating member 231 and a 2-2 active vibrating member 232. For example, the 2-1 active vibration member 231 and the 2-2 active vibration member 232 may be a pair of second active vibration members. In this specification, the 2-1 active vibration member 231 and the 2-2 active vibration member 232 may be a second active vibration member and a third active vibration member, and the numbers 2-1 and 2-2 do not limit the contents of this specification.

[0049] The second-first active vibration member 231 and the second-second active vibration member 232 may be connected or coupled to the periphery of the first active vibration member 211 so as to be parallel to each other with the center (or central region) of the first active vibration member 211 in between. For example, the second-first active vibration member 231 and the second-second active vibration member 232 may be connected or coupled to the periphery of the first active vibration member 211 so as to be symmetrical to each other with the center of the first active vibration member 211 as the center.

[0050] Each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232 may include a first connection region and a second connection region that are parallel to each other across a center or symmetrical to each other around the center. The first connection region may include at least a portion of a first edge portion of each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232 that overlaps with the periphery of the first active vibration member 211. The second connection region may include at least a portion of a second edge portion of each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232 that is connected to the passive vibration member 100.

[0051] According to an embodiment of the present specification, each of the second-first active vibration member 231 and the second-second active vibration member 232 may have a rectangular or square shape, but the embodiment of the present specification is not limited thereto. For example, each of the second-first active vibration member 231 and the second-second active vibration member 232 may have a polygonal shape, a non-polygonal shape, a circular shape, or an elliptical shape that may be symmetrical with respect to the center of the first active vibration member 211. For example, each of the second-first active vibration member 231 and the second-second active vibration member 232 may have the same shape and size as the first active vibration member 211, but the embodiment of the present specification is not limited thereto. For example, each of the second-first active vibration member 231 and the second-second active vibration member 232 may have the same shape as the first active vibration member 211 but a different size.

[0052] The second-1 active vibration member 231 and the second-2 active vibration member 232 may be configured to vibrate (or displace) in a curved shape by the same second drive signal, but the embodiments of the present specification are not limited thereto. For example, the second-1 active vibration member 231 and the second-2 active vibration member 232 may be configured to vibrate (or displace) by different second drive signals, thereby changing the displacement force and the amplitude of the vibration transmitted to the passive vibration member 100 to realize sounds in various frequency ranges.

[0053] According to an embodiment of the present specification, the second driving signal applied to each of the second-1 active vibration member 231 and the second-2 active vibration member 232 may be the same as or different from the first driving signal applied to the first active vibration member 211. In one embodiment of the present specification, the first driving signal and the second driving signal may be in phase ( Same phase or in-phase ) or have an opposite phase ( opposite phases or anti-phases In another embodiment of the present specification, the first drive signal and the second drive signal may have the same period and the same amplitude, or may have different amplitudes, but the embodiment of the present specification is not limited thereto.

[0054] Each of the first active vibrating member 211, the second-first active vibrating member 231, and the second-second active vibrating member 232 may include a vibrating element.

[0055] The vibration element can vibrate (or be displaced) by an input drive signal. For example, the vibration element vibrates due to the piezoelectric effect ( piezoelectric effect ) (or piezoelectric properties) can vibrate (or be displaced) by alternately repeating contraction and expansion. The drive signal can be an AC signal such as an acoustic signal, a vibration drive signal, or an audio signal. The vibration elements of the first active vibrating member 211 can be vibrated (or displaced) by the first drive signal. The vibration elements of the second-first active vibrating member 231 and the second-second active vibrating member 232 can both be vibrated (or displaced) by the second drive signal.

[0056] The vibration element according to the embodiments of the present specification may be a single-layer type vibration element or a multi-layer type vibration element, but the embodiments of the present specification are not limited thereto. The vibration element may include one or more piezoelectric elements having piezoelectric properties. The piezoelectric element may be an element that is displaced by the inverse piezoelectric effect when a drive signal (or voltage) is applied based on an input acoustic signal. The piezoelectric element may be a bimorph ( Bimorph ) and unimorph ( Unimorph ) can be an element that undergoes bending displacement (or bending vibration) when subjected to voltage.

[0057] The second vibrating part 230 may be coupled or adhered to the periphery of the first vibrating part 210 by adhesive members 220. The second-1 active vibrating part 231 and the second-2 active vibrating part 232 may be coupled or adhered to the periphery of the first active vibrating part 211 by adhesive members 220. Thus, the second-1 active vibrating part 231 and the second-2 active vibrating part 232 are connected to the first active vibrating part 210 by adhesive members 220, and thus can vibrate (or be displaced) by receiving the vibration (or displacement) of the first active vibrating part 210.

[0058] The adhesive member 220 may be disposed or interposed between each of the second-first active vibration member 231 and the second-second active vibration member 232 and the first active vibration member 211. The adhesive member 220 may be disposed or interposed between each edge portion of the second-first active vibration member 231 and the second-second active vibration member 232 and an edge portion of the front surface of the first active vibration member 211. The adhesive member 220 according to the embodiments of the present specification may include a first adhesive member 221 and a second adhesive member 222.

[0059] The first adhesive member 221 may be disposed or interposed between the second-first active vibration member 231 and the first active vibration member 211. For example, the first adhesive member 221 may be coupled between a first coupling region of the second-first active vibration member 231 and a first edge portion of the first active vibration member 211. For example, the first adhesive member 221 may be coupled between an edge portion of a first front surface of the second-first active vibration member 231 and an edge portion of a first rear surface of the first active vibration member 211. In this way, the first edge portion of the second-first active vibration member 231 is coupled to the first edge portion of the first active vibration element 211 by the first adhesive member 221, and can vibrate (or be displaced) due to the vibration (or displacement) of the first active vibration element 211.

[0060] The second adhesive member 222 may be disposed or interposed between the second-second active vibration member 232 and the first active vibration member 211. For example, the second adhesive member 222 may be connected between the first connecting region of the second-second active vibration member 232 and the second edge portion of the first active vibration member 211. For example, the second adhesive member 222 may be connected between the first connecting region of the second-second active vibration member 232 and the second edge portion of the first active vibration member 211. 1 The second active vibration member 232 may be connected between an edge portion of the front surface and an edge portion of the second rear surface of the first active vibration member 211. In this way, the first edge portion of the second-2 active vibration member 232 is connected to the second edge portion of the first active vibration element 211 by the second adhesive member 222, and can vibrate (or be displaced) due to the vibration (or displacement) of the first active vibration element 211.

[0061] Alternatively, the adhesive member 220 may be attached to each of the second-first active vibration member 231 and the second-second active vibration member 232. Back The edge portion and the first active vibration member 211 front For example, the first adhesive member 221 may be connected between an edge portion of the first rear surface of the second-1 active vibration member 231 and an edge portion of the first front surface of the first active vibration member 211. For example, the second adhesive member 222 may be connected between an edge portion of the first rear surface of the second-1 active vibration member 231 and an edge portion of the first front surface of the first active vibration member 211. 1 It may be coupled between the rear edge portion and the second front edge portion of the first active vibration member 211 .

[0062] Each of the first adhesive member 221 and the second adhesive member 222 according to the embodiments of the present specification may be made of an adhesive material that can be compressed and restored. For example, each of the first adhesive member 221 and the second adhesive member 222 may be made of an adhesive material with a low modulus of elasticity. For example, each of the first adhesive member 221 and the second adhesive member 222 may be made of an adhesive resin material, adhesive, adhesive tape, or the like, but the embodiments of the present specification are not limited thereto. The adhesive resin material may be an epoxy ( epoxy ) type, acrylic ( acrylic ) type, silicone ( silicone ) or urethane ( urethaneFor example, each of the first adhesive member 221 and the second adhesive member 222 may include an acrylic adhesive material, which has relatively excellent adhesive strength and high hardness among acrylics and urethanes, so that the vibration of the first active vibration member 211 is efficiently transmitted to the first edge portions of the second-first active vibration member 231 and the second-second active vibration member 232, but the embodiment of the present specification is not limited thereto.

[0063] The adhesive resin, adhesive, or adhesive layer according to the embodiments of the present specification may be a photo-curable adhesive material, but the embodiments of the present specification are not limited thereto. For example, the adhesive resin, adhesive, or adhesive layer may be a UV (ultraviolet) adhesive, but the embodiments of the present specification are not limited thereto.

[0064] The connecting unit 250 may be connected or coupled to the periphery of the second vibrating unit 230 and the rear surface 100a of the passive vibration member 100. For example, the connecting unit 250 may include 2N connecting members 251, 252 connected to each of the 2N second active vibration members 231, 232 and the passive vibration member 100. For example, the connecting unit 250 may include a first connecting member 251 and a second connecting member 252 connected to each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232 and the passive vibration member 100. For example, the 2N connecting members 251, 252 may include the first connecting member 251 and the second connecting member 252.

[0065] Each of the first and second connecting members 251 and 252 may have a polygonal prism shape or a cylindrical shape, although embodiments of the present specification are not limited thereto. According to embodiments of the present specification, each of the first and second connecting members 251 and 252 may include an elastic material having elasticity or stretchability. Each of the first and second connecting members 251 and 252 may be made of an elastic body having a lower modulus of elasticity (or Young's modulus) than each of the 2-1 and 2-2 active vibration members 231 and 232. For example, each of the first and second connecting members 251 and 252 may include, but is not limited to, double-sided tape, single-sided tape, or a double-sided adhesive foam pad, and may include an elastic pad such as a rubber pad or silicone pad having an adhesive layer and capable of compressing and restoring. For example, the adhesive layer of each of the first and second connecting members 251 and 252 may include an acrylic adhesive material having excellent adhesive strength and high hardness, although embodiments of the present specification are not limited thereto. For example, each of the first and second connecting members 251, 252 may be made of an elastomer.

[0066] The first connecting member (or first elastic member) 251 may be disposed between or connected to the second-first active vibration member 231 and the passive vibration member 100. For example, the first connecting member 251 may be connected between the second connecting region of the second-first active vibration member 231 and the rear surface 100a of the passive vibration member 100. For example, the first connecting member 251 may be connected between an edge portion of the second front surface of the second-first active vibration member 231 and the rear surface 100a of the passive vibration member 100. In this way, the second edge portion of the second-first active vibration member 231 is connected to the passive vibration member 100 by the first connecting member 251, and the passive vibration member 100 can be vibrated (or displaced) by vibrations of the first active vibration member 211 and the second-first active vibration member 231. Furthermore, the mass of the 2-1 active vibration member 231 at both ends is increased by the first connecting member 251 and the first active vibration member 211, and the elasticity is increased by the combined action of the elastic modulus of the first connecting member 251 and the elastic modulus of the first active vibration member 211 itself, thereby increasing the vibration amplitude (or displacement amplitude).

[0067] The second connecting member (or second elastic member) 252 may be disposed between or connected to the second-second active vibration member 232 and the passive vibration member 100. For example, the second connecting member 252 may be connected between the second connecting region of the second-second active vibration member 232 and the rear surface 100a of the passive vibration member 100. For example, the second connecting member 252 may be connected between an edge portion of the second front surface of the second-second active vibration member 232 and the rear surface 100a of the passive vibration member 100. In this way, the second edge portion of the second-second active vibration member 232 is connected to the passive vibration member 100 by the second connecting member 252, and the passive vibration member 100 can be vibrated (or displaced) by vibrations of the first active vibration member 211 and the second-second active vibration member 232. Furthermore, the mass of the 2-2 active vibration member 232 at both ends is increased by the second connecting member 252 and the first active vibration member 211, and the elasticity is increased by the combined action of the elastic modulus of the second connecting member 252 and the elastic modulus of the first active vibration member 211 itself, thereby increasing the vibration amplitude (or displacement amplitude).

[0068] In the vibration device 200 according to the first embodiment of the present specification, when driven (or vibrating), the 2-1 and 2-2 active vibration members 231 、 By having a large vibration amplitude (or displacement amplitude) due to the composite vibration (or compound vibration) of each of 232, the vibration amplitude (or displacement amplitude) of the passive vibration member 100 can be increased, thereby improving the acoustic characteristics and / or sound pressure characteristics in the low frequency range generated by the vibration of the passive vibration member 100.

[0069] 4 is a diagram showing a vibrating element according to an embodiment of the present specification, and is a diagram showing a vibrating element of the active vibrating member shown in FIGS.

[0070] 2 to 4, each of the first active vibrating member 210, the second-first active vibrating member 231, and the second-second active vibrating member 232 according to the embodiment of the present specification may include a vibrating element 201.

[0071] The vibration element 201 according to the embodiment of the present specification may be a single-layer type vibration element. The single-layer type vibration element 201 has a piezoelectric layer 201 a , piezoelectric layer 201 a one or more first electrodes 201b disposed on the first surface of the piezoelectric layer 201; a The piezoelectric layer 201 may include one or more second electrodes 201c disposed on a second surface different from the first surface of the piezoelectric layer 201. For example, a For example, the piezoelectric layer 201 may include a front surface and a back surface. a The first surface of the piezoelectric layer 201 a , and the first region in the front (or rear) surface of the piezoelectric layer 201 a The second surface of the piezoelectric layer 201 a For example, the piezoelectric layer 201 may be a first region and a second region spaced apart from each other in the front (or rear) surface of the piezoelectric layer 201. a The first surface of the piezoelectric layer 201 a and the piezoelectric layer 201 a The second surface of the piezoelectric layer 201 a It may be the back of.

[0072] The single-layer vibration element 201 may further include a first protective member 201d covering the first electrode 201b and a second protective member 201e covering the second electrode 201c. The first protective member 201d may be bonded to the first electrode 201b via an adhesive layer. Alternatively, the first electrode 201b may be realized on the first protective member 201d and may be bonded to the piezoelectric layer 201 via a conductive adhesive member. a The second protective member 201e may be electrically connected to the first surface of the piezoelectric layer 201. The second protective member 201e may be bonded to the second electrode 201c via an adhesive layer. Alternatively, the second electrode 201c may be provided on the second protective member 201e and may be bonded to the piezoelectric layer 201 via a conductive adhesive member. a The second surface of the semiconductor device may be electrically connected to the second surface of the semiconductor device.

[0073] In the vibration element 201 of the first active vibration member 210, any one of the first protective member 201d and the second protective member 201e may be coupled or bonded to any one of the first protective member 201d and the second protective member 201e formed on each of the vibration elements 201 of the 2-1 active vibration member 231 and the 2-2 active vibration member 232 via an adhesive member 220. In each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232, any one of the first protective member 201d and the second protective member 201e of the vibration element 201 may be coupled or connected to the passive vibration member 100 via a coupling portion 250.

[0074] Alternatively, the vibration element 201 according to other embodiments of the present specification may be a laminated vibration element. The single-layer vibration element 201 may include a plurality of piezoelectric elements. For example, an electrode interposed between two vertically adjacent piezoelectric elements among the plurality of piezoelectric elements may be used as a common electrode that applies the same drive signal to each of the two vertically adjacent piezoelectric elements, but the embodiments of the present specification are not limited thereto. For example, an elastic insulating layer may be interposed between two vertically adjacent piezoelectric elements among the plurality of piezoelectric elements. For example, the elastic insulating layer may act as a weight (or mass) ( mass In the vibration element 201 according to another embodiment of the present specification, the uppermost piezoelectric element among the plurality of piezoelectric elements may be covered by the first protective member 201d, and the lowermost piezoelectric element among the plurality of piezoelectric elements may be covered by the second protective member 201e.

[0075] The piezoelectric layer 201 according to the embodiments of the present specification may be a piezoelectric part, a piezoelectric structure, a piezoelectric sheet, a piezoelectric ceramic sheet, a piezoelectric plate, a piezoelectric ceramic plate, a vibration generating part, a displacement part, a displacement layer, a piezoelectric structure, or a vibration structure, but the embodiments of the present specification are not limited thereto.

[0076] The material of the piezoelectric layer 201 according to the embodiment of the present specification is not particularly limited, but may be a ceramic-based piezoelectric material that can realize a relatively high vibration, or a perovskite ( Perovskite ) series crystal structure. For example, the piezoelectric layer 201 may be made of a lead ( Pb ) or made of piezoelectric material containing lead ( Pb )-free piezoelectric materials. Pb ) is a piezoelectric material called PZT ( Lead Zirconate Titanate )-based substances, PZNN( Lead Zirconate Nickel Niobate )-based substances, PMN( Lead Magnesium Niobate )-based substances, PNN( Lead Nickel Niobate )-based substances, PZN( Lead Zirconate Niobate ) substances, and PIN( Lead Indium Niobate )-based materials, but examples herein are not limited thereto. For example, lead ( Pb )-free piezoelectric materials include barium titanate ( BaTiO 3), calcium titanate ( CaTiO 3), and strontium titanate ( SrTiO 3), but examples herein are not limited thereto.

[0077] 5A and 5B are diagrams showing first and second modified examples of the piezoelectric layer shown in FIG.

[0078] 4 and 5A, the piezoelectric layer 201a according to the first modified embodiment of the present specification may include a plurality of first portions 201a1 and a plurality of second portions 201a2. For example, the plurality of first portions 201a1 and the plurality of second portions 201a2 may be alternately and repeatedly arranged along a first direction (X) (or a second direction (Y)). For example, the first direction (X) may be the horizontal direction of the vibration element 201, and the second direction (Y) may be the vertical direction of the vibration element 201 intersecting with the first direction (X), but is not limited thereto. For example, the first direction (X) may be the vertical direction of the vibration element 201, and the second direction (Y) may be the horizontal direction of the vibration element 201.

[0079] Each of the plurality of first portions 201a1 may include an inorganic material having a piezoelectric effect (or piezoelectric properties). For example, each of the plurality of first portions 201a1 may include a piezoelectric material, a composite piezoelectric material, or an electroactive material. For example, each of the plurality of first portions 201a1 may be an inorganic portion, an inorganic material portion, a piezoelectric portion, a piezoelectric material portion, or an electroactive portion.

[0080] According to an embodiment of the present specification, each of the plurality of first portions 201a1 may have a first width (W1) parallel to a first direction (X) and may extend along a second direction (Y) intersecting the first direction (X). Each of the plurality of first portions 201a1 may be made of substantially the same piezoelectric material as the piezoelectric layer 201a described in FIG. 4, and a duplicated description thereof will be omitted.

[0081] Each of the plurality of second portions 201a2 may be disposed between the plurality of first portions 201a1. For example, each of the plurality of first portions 201a1 may be disposed between two adjacent second portions 201a2 among the plurality of second portions 201a2. Each of the plurality of second portions 201a2 may have a second width ( W2 ) and may extend along the second direction (Y) (or the first direction (X)). W1 ) is the second width ( W2 ) can be the same as or different from the first width ( W1 ) is the second width ( W2 For example, the first portion 201a1 and the second portion 201a2 may include line or stripe shapes having the same or different sizes.

[0082] Each of the plurality of second portions 201a2 may be configured to fill a gap between two adjacent first portions 201a1. Each of the plurality of second portions 201a2 may be coupled or bonded to the adjacent first portion 201a1 by being configured to fill a gap between two adjacent first portions 201a1. According to an embodiment of the present specification, each of the plurality of first portions 201a1 and each of the plurality of second portions 201a2 may be disposed (or arranged) parallel to each other on the same plane (or the same layer).

[0083] According to an embodiment of the present specification, each of the plurality of second portions 201a2 can absorb an impact applied to the first portion 201a1, thereby improving the durability of the first portion 201a1 and providing flexibility to the vibration element 201. Each of the plurality of second portions 201a2 can include an organic material having soft properties. For example, the plurality of second portions 201a2 can be one or more of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer. Ruga For example, each of the plurality of second portions 201a2 may be an organic portion, an organic material portion, an adhesive portion, a stretchable portion, a bending portion, a damping portion, or a soft portion. However, these Limited to the term R It's not something like that.

[0084] A first surface of each of the plurality of first portions 201a1 and the plurality of second portions 201a2 may be commonly coupled to the first electrode layer 201b, and a second surface of each of the plurality of first portions 201a1 and the plurality of second portions 201a2 may be commonly coupled to the second electrode layer 201c.

[0085] The piezoelectric layer 201a according to the first modified embodiment of the present specification can have a single thin film shape by arranging (or connecting) a plurality of first portions 201a1 and second portions 201a2 on the same plane. As a result, the vibration element 201 including the piezoelectric layer 201a according to the first modified embodiment of the present specification can vibrate in the up and down direction by the first portions 201a1 having vibration characteristics, and can bend into a curved shape by the second portions 201a2 having flexibility. For example ... second portions 201a2 having flexibility by having a 2-2 composite structure. kHz The following resonant frequencies may be used, but examples herein are not limited thereto:

[0086] 2 to 4 and 5A, when the vibration element 201 of the first active vibration member 211, the vibration element 201 of the 2-1 active vibration member 231, and the vibration element 201 of the 2-2 active vibration member 232 each include the piezoelectric layer 201a according to the first modified embodiment of the present specification, at least one or more first portions 201a1 arranged on the first and second edge portions of the vibration element 201 of the first active vibration member 211 can be overlapped or superimposed with at least a part of at least one or more first portions 201a1 formed on each of the vibration element 201 of the 2-1 active vibration member 231 and the vibration element 201 of the 2-2 active vibration member 232. This allows vibration of the first active vibration member 211 to be efficiently transmitted to each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232.

[0087] Referring to Figures 4 and 5B, the piezoelectric layer 201a according to the second modified embodiment of the present specification may include a plurality of first portions 201a3 and a second portion 201a4 disposed between the plurality of first portions 201a3.

[0088] The plurality of first portions 201a3 may be arranged to be spaced apart from each other along the first direction (X) and the second direction (Y). For example, the plurality of first portions 201a3 may be arranged in a lattice pattern, each having a hexahedral shape of the same size. Each of the plurality of first portions 201a3 may be made of substantially the same piezoelectric material as the first portion 201a1 described in FIG. 5A, and therefore, a duplicated description thereof will be omitted. Ministry Abbreviated.

[0089] The second portion 201a4 may be disposed between the plurality of first portions 201a3 along each of the first direction (X) and the second direction (Y). The second portion 201a4 may be connected to or bonded to the adjacent first portions 201a3 by filling the gap between two adjacent first portions 201a3 or by being configured to surround each of the plurality of first portions 201a3. The second portion 201a4 is made of substantially the same organic material as the second portion 201a2 described in FIG. 5A, and therefore, the description thereof will be omitted. Ministry Abbreviated.

[0090] A first surface of each of the plurality of first portions 201a3 and second portions 201a4 may be commonly coupled to the first electrode layer 201b, and a second surface of each of the plurality of first portions 201a3 and second portions 201a4 may be commonly coupled to the second electrode layer 201c.

[0091] The piezoelectric layer 201a according to the second modified embodiment of the present specification can have a single thin film shape by arranging (or connecting) a plurality of first portions 201a3 and second portions 201a4 on the same plane. As a result, the vibration element 201 including the piezoelectric layer 201a according to the second modified embodiment of the present specification can vibrate in the up and down direction due to the first portions 201a3 having vibration characteristics, and can bend into a curved shape due to the second portions 201a4 having flexibility. For example ... second portions 201a4 having flexibility due to the 2-2 composite structure. kHz The following resonant frequencies may be used, but examples herein are not limited thereto:

[0092] 2 to 4 and 5B, when the vibration element 201 of the first active vibration member 211, the vibration element 201 of the 2-1 active vibration member 231, and the vibration element 201 of the 2-2 active vibration member 232 each include the piezoelectric layer 201a according to the second modified embodiment of the present specification, at least one or more first portions 201a3 arranged on the first and second edge portions of the vibration element 201 of the first active vibration member 211 can be overlapped or superimposed with at least a part of at least one or more first portions 201a3 formed on each of the vibration element 201 of the 2-1 active vibration member 231 and the vibration element 201 of the 2-2 active vibration member 232. This allows vibration of the first active vibration member 211 to be efficiently transmitted to each of the 2-1 active vibration member 231 and the 2-2 active vibration member 232.

[0093] 6A and 6B are diagrams showing the vibration amplitude (or displacement amplitude) and displacement points of the vibration device caused by the drive signals applied to the first vibration section and the second vibration section shown in FIGS. 2 and 3, respectively.

[0094] 2 and 6A, the first driving signal ( DS1 ) is the second drive signal ( DS2 ) can have the same phase as the first active vibration member 211 of the first vibrating section 210 and the second-first active vibration member 231 and the second-second active vibration member 232 of the second vibrating section 230. This allows the first active vibration member 211 of the first vibrating section 210 and the second-first active vibration member 231 and the second-second active vibration member 232 of the second vibrating section 230 to be displaced (or bent) in the same shape as each other.

[0095] The driving signals ( DS1, DS2) have the same phase, the overall vibration amplitude (or displacement amount) of the vibration device 200 can be increased as the vibration amplitude (or displacement amount) of the first active vibration member 211 and the vibration amplitude of the second-first active vibration member 231 (or the second-second active vibration member 232) are added. For example, the vibration of the first active vibration member 211 and the vibration of the second-first active vibration member 231 and the second-second active vibration member 232 reinforce each other, thereby increasing the vibration amplitude of the vibration device 200 due to the vibration of the first vibrating section 210 and the second vibrating section 230.

[0096] According to an embodiment of the present specification, the positive polarity first drive signal ( DS1 ) is applied to the first active oscillatory member 211, and at the same time, a positive polarity first drive signal ( DS1 ) and a positive polarity second drive signal ( DS2 ) is applied to the 2-1 active vibration member 231 and the 2-2 active vibration member 232, respectively, the first vibration part 210 and the second vibration part 230 are formed in the first shape (or convex shape) ( DSa ), and the second edge portions of the second-1 active vibration member 231 and the second-2 active vibration member 232 can be displaced in a direction approaching the support member 300. Conversely, when the first drive signal ( DS1 ) is applied to the first active oscillatory member 211, and at the same time, a negative polarity first drive signal ( DS1 ) and a negative polarity second drive signal ( DS2 ) is applied to the second-first active vibration member 231 and the second-second active vibration member 232, respectively, the first vibration section 210 and the second vibration section 230 are in the first shape ( DSa ) is opposed to the second shape (or concave shape) ( DSb ), and the second edge portions of the second-1 active vibration member 231 and the second-2 active vibration member 232 can be displaced in a direction approaching the passive vibration member 100.

[0097] Therefore, when drive signals of the same phase are applied to the first vibrating section 210 and the second vibrating section 230, a drive signal of positive polarity ( DS1 , DS2) the first shape (or first vibration shape) ( DSa ) and negative polarity drive signal ( DS1 , DS2 ) the second shape (or second vibration shape) ( DSb ) is crossed at the displacement point ( BP ) may be located outside (or on the outer side of) the connecting members 251 and 252. As a result, when a driving signal of the same phase is applied to the first vibrating part 210 and the second vibrating part 230, the vibration amplitude (or displacement amount) of the passive vibration member 100 may be increased as the vibration amplitude (or displacement amount) of the vibration device 200 is increased, so that the acoustic characteristics and sound pressure characteristics of the low frequency band, for example, the low frequency band, generated by the vibration of the passive vibration member 100 may be improved.

[0098] 2 and 6B, the second driving signal ( DS2 ) is the first drive signal ( DS1 ) can have an opposite phase to that of the first active vibration member 211 of the first vibrating part 210, and the second-first active vibration member 231 and the second-second active vibration member 232 of the second vibrating part 230, respectively, so that they can be displaced (or bent) into different shapes.

[0099] The second drive signal ( DS2 ) is applied to the first active vibration member 211 as a first drive signal ( DS1 ), the vibration amplitude (or displacement amount) of the entire vibration device 200 can be reduced as the vibration amplitude (or displacement amount) of the second-first active vibration member 231 (or the second-second active vibration member 232) is suppressed by the vibration amplitude (or displacement amount) of the first active vibration member 211. For example, the vibration of the first active vibration member 211 interferes with the vibration of the second-first active vibration member 231 and the second-second active vibration member 232, and thus the vibration amplitude of the vibration device 200 due to the vibration of the first vibrating section 210 and the second vibrating section 230 can be reduced.

[0100] According to an embodiment of the present specification, the positive polarity first drive signal ( DS1 ) is applied to the first active oscillatory member 211, and at the same time, a positive polarity first driving signal ( DS1 ) and a negative polarity second drive signal ( DS2 ) is applied to the second-first active vibration member 231 and the second-second active vibration member 232, respectively, the first vibration section 210 and the second vibration section 230 are shaped like a second shape ( DSb ), and the second edge portions of the second-1 active vibration member 231 and the second-2 active vibration member 232 can be displaced in a direction approaching the passive vibration member 100. Conversely, when a negative polarity first drive signal ( DS1 ) is applied to the first active oscillatory member 211, and at the same time, a negative polarity first driving signal ( DS1 ) and a positive polarity second drive signal ( DS2 ) is applied to the second-first active vibration member 231 and the second-second active vibration member 232, respectively, the first vibration section 210 and the second vibration section 230 are in the first shape ( DSa ), and the second edge portions of the second-1 active vibration member 231 and the second-2 active vibration member 232 can be displaced in a direction approaching the support member 300.

[0101] Therefore, when drive signals of opposite phases are applied to the first vibrating section 210 and the second vibrating section 230, the first shape ( DSa ) and the second shape ( DSb ) intersect at the displacement point ( BP ) may be located inside (or inside of) the connecting members 251, 252, or may be located between the connecting members 251, 252 and the first vibrating part 210. As a result, when drive signals of opposite phases are applied to the first vibrating part 210 and the second vibrating part 230, the vibration amplitude (or displacement amount) of the vibration device 200 may be reduced, and as a result, the vibration amplitude (or displacement amount) of the passive vibration member 100 may be reduced, and therefore, the acoustic characteristics and sound pressure characteristics of the mid-low frequency band or the mid-high frequency band generated by the vibration of the passive vibration member 100 may be improved.

[0102] As another example, at least one of the phase and amplitude of the second driving signal applied to the second-1 active vibration member 231 may be different from at least one of the phase and amplitude of the second driving signal applied to the second-2 active vibration member 232. In this case, the first shape ( DSa ) and the second shape ( DSb ) intersect at the displacement point ( BP ) can be changed, and thus the displacement force and the amplitude of the vibration transmitted to the passive vibration member 100 can be changed, thereby realizing sounds in various frequency ranges. For example, the displacement points ( BP ) changes, the displacement force transmitted to the passive vibration member 100 and the amplitude of the vibration are changed, thereby realizing sounds in various frequency ranges.

[0103] Such a device according to the embodiment of the present specification supplies drive signals having the same phase to the first vibration unit 210 and the second vibration unit 230 of the vibration device 200, thereby vibrating the passive vibration member 100. of Since the vibration amplitude (or displacement amount) of each can be increased, the acoustic characteristics and sound pressure characteristics of the low frequency band generated by the vibration of the passive vibration member 100 can be improved.

[0104] In addition, the device according to the embodiments of the present specification can reduce the displacement amount (or displacement range) of each passive vibration member 100 by supplying drive signals having opposite phases to the first vibration section 210 and the second vibration section 230 of the vibration device 200, thereby improving the acoustic characteristics and sound pressure characteristics of the mid-low frequency range or mid-high frequency range generated by the vibration of the passive vibration member 100.

[0105] The device according to the embodiment of the present specification applies a driving signal ( DS1 , DS2 ) and a drive signal ( DS1 , DS2) periodically or alternately, the vibration amplitude (or displacement amount) of the first vibrating part 210 and the second vibrating part 230 can be adjusted (or varied) to adjust (or vary) the vibration amplitude (or displacement amount) of each passive vibration member 100, so that sounds in various frequency ranges can be generated (or output) by the vibration of the passive vibration member 100, and the acoustic characteristics and sound pressure characteristics of various frequency ranges can be improved.

[0106] Figure 7 is another cross-sectional view taken along line A-A' in Figure 1. Figure 7 shows a device or vibration device according to an embodiment of the present specification described with reference to Figures 1 to 6B, to which a weight member has been added. Therefore, in the description of Figure 7, the same reference numerals are used for the remaining components except for the weight member and its related components, and redundant description thereof will be omitted.

[0107] Referring to FIG. 7, a device or vibration device 200 according to another embodiment of the present disclosure may further include a weight member 260 .

[0108] The weight member 260 may be disposed on or attached to the first vibrating part 210. For example, the weight member 260 may be disposed on the first active vibrating member 211 between the second-first active vibrating member 231 and the second-second active vibrating member 232. For example, the weight member 260 may be disposed on or attached to the center of the rear surface or the center of the front surface of the first active vibrating member 211. For example, the weight member 260 may have a polygonal prism shape or a cylindrical shape.

[0109] The weight member 260 acts as a weight (or mass) ( mass ) can be made of an elastic material that can act as a deflection strength. For example, the weight member 260 can be made of an elastic material that has a strength less than the deflection strength of the first active vibration member 211. For example, the weight member 260 can be made of the same elastic material as the connecting portion 250.

[0110] The weight member 260 increases the weight (or mass) of each of the first active vibration member 211, the second-first active vibration member 231, and the second-second active vibration member 232, thereby reducing the lowest resonance frequency (or lowest natural frequency) of the first active vibration member 211. mass ) As a result, the lowest resonance frequency (or lowest natural frequency) of each of the first active vibration member 211, the second-first active vibration member 231, and the second-second active vibration member 232 is further reduced, and thus the first active vibration member 211, the second-first active vibration member 231, and the second-second active vibration member 232 can vibrate at a relatively lower frequency.

[0111] Alternatively, the weight member 260 may be disposed between each of the second-first active vibration member 231 and the second-second active vibration member 232 and the first active vibration member 211. For example, the weight member 260 may be disposed between the first active vibration member 211 and the adhesive member 220. For example, the weight member 260 may be disposed between each of the second-first active vibration member 231 and the second-second active vibration member 232 and the adhesive member 220. For example, the weight member 260 may be incorporated into each of the first and second adhesive members 221 and 222. For example, each of the first and second adhesive members 221 and 222 may be disposed to entirely surround the weight member 260. In this case, the weight member 260 increases the weight (or mass) of each of the first active vibration member 211, the second-first active vibration member 231, and the second-second active vibration member 232, thereby reducing the lowest resonance frequency (or lowest natural frequency) of the first active vibration member 211. mass ) can act as a

[0112] Alternatively, the weight member 260 may be disposed on each of the second-first active vibration member 231 and the second-second active vibration member 232. For example, the weight member 260 may be disposed on or attached to the center of the back surface of each of the second-first active vibration member 231 and the second-second active vibration member 232, which faces the support member 300. In this case, the weight member 260 also increases the weight (or mass) of each of the first active vibration member 211, the second-first active vibration member 231, and the second-second active vibration member 232, thereby acting as a weight (or mass) ( mass ) can act as a

[0113] Such a device or vibration device 200 according to another embodiment of the present specification further includes a weight member 260 that can reduce the lowest resonant frequency of each of the first active vibration member 211, the second-1 active vibration member 231, and the second-2 active vibration member 232, thereby further improving the acoustic characteristics and sound pressure characteristics in the low-frequency range generated by the vibration of the passive vibration member 100.

[0114] Fig. 8 is a plan view showing a vibration device according to a second embodiment of the present specification. Fig. 8 shows a vibration device in which the second vibration unit is modified from the vibration device shown in Figs. 2 and 3. Therefore, in the following description of Fig. 8, the same reference numerals are used for the remaining components except for the second vibration unit and its related components, and redundant description thereof will be omitted.

[0115] 2 and 8, in a vibration device 200 according to a second embodiment of the present specification, the 2-1 and 2-2 active vibration members 231, 232 of the second vibration section 230 may be arranged so as to be inclined from the first active vibration member 211 of the first vibration section 210. The 2-1 and 2-2 active vibration members 231, 232 may be arranged so as to be inclined or tilted relative to the first and second edge portions of the first active vibration member 211, and may be arranged parallel to each other with the center of the first active vibration member 211 in between.

[0116] Each of the 2-1 and 2-2 active vibration members 231, 232 may be arranged to be inclined or tilted at a certain angle (θ) with respect to the second direction (Y). For example, each of the 2-1 and 2-2 active vibration members 231, 232 may be arranged to be inclined or tilted at a certain angle (θ) with respect to first and second sides of the first active vibration member 211 that are parallel to the second direction (Y). For example, first sides corresponding to first edge portions of each of the 2-1 and 2-2 active vibration members 231, 232 may be inclined or tilted at a certain angle (θ) with respect to the first and second sides of the first active vibration member 211.

[0117] According to an embodiment of the present specification, the angle (θ) between the first side of the first active vibration member 211 and the first side of the second-first active vibration member 231 may be an acute angle. Also, the angle (θ) between the second side of the first active vibration member 211 and the first side of the second-second active vibration member 232 may be an acute angle. For example, each of the angle (θ) between the first side of the first active vibration member 211 and the first side of the second-first active vibration member 231 and the angle (θ) between the second side of the first active vibration member 211 and the first side of the second-second active vibration member 232 may be 45 degrees or less, but the embodiment of the present specification is not limited thereto.

[0118] According to an embodiment of the present specification, at least one of both corners of the first edge portion of the first active vibration member 211 may overlap or be connected to the first edge portion of the second-1 active vibration member 231. At least one of both corners of the second edge portion of the first active vibration member 211 may overlap or be connected to the first edge portion of the second-2 active vibration member 231. This may prevent or minimize cracks or breaks at the corners of the first active vibration member 211 when the first active vibration member 211 vibrates, thereby improving the reliability of the first active vibration member 211 or the vibration device 200.

[0119] According to an embodiment of the present specification, each of the second-first active vibration member 231 and the second-second active vibration member 232 may include a first corner portion overlapping with the first active vibration member 211 and a second corner portion opposite the first corner portion. As a result, the distance between the second corner portion of each of the second-first active vibration member 231 and the second-second active vibration member 232 and the center of the first active vibration member 211 is increased compared to FIG. 3, thereby increasing the length of the vibration device 200 and thereby increasing the vibration amplitude (or displacement amplitude) of the vibration device 200.

[0120] In the vibration device 200 according to the second embodiment of the present specification, the first connecting member 251 of the connecting unit 250 may be connected or coupled between the second corner portion of the second-1 active vibration member 231 and the rear surface 100a of the passive vibration member 100. The second connecting member 252 of the connecting unit 250 may be connected or coupled between the second corner portion of the second-2 active vibration member 232 and the rear surface 100a of the passive vibration member 100. As a result, the distance (L) between the first connecting member 251 and the second connecting member 252 is increased compared to FIG. 3, thereby lengthening the length of the vibration device 200 and thereby increasing the vibration amplitude (or displacement amplitude) of the vibration device 200.

[0121] In the vibration device 200 according to the second embodiment of the present specification, the second-1 active vibration member 231 and the second-2 active vibration member 232 are each arranged so as to be tilted or inclined relative to the first active vibration member 211, thereby increasing the vibration amplitude (or displacement amplitude), and thereby further improving the acoustic characteristics and / or sound pressure characteristics in the low-frequency range generated by the vibration of the passive vibration member 100.

[0122] Fig. 9 is a plan view showing a vibration device according to a third embodiment of the present specification. Fig. 9 shows a vibration device in which the second vibration unit is modified from the vibration device shown in Fig. 2, Fig. 3 or Fig. 7. Therefore, in the following description of Fig. 9, the same reference numerals will be used for the remaining components except for the second vibration unit and related components, and redundant description thereof will be omitted.

[0123] 2, 7, and 9, in a vibration device 200 according to a third embodiment of the present specification, the second vibration section 230 can include four active vibration members 231, 232, 233, and 234. For example, the second vibration section 230 can include 2-1 to 2-4 active vibration members 231, 232, 233, and 234. For example, the 2-1 active vibration member 231 and the 2-2 active vibration member 232 may be a pair of second active vibration members, and the 2-3 active vibration member 233 and the 2-4 active vibration member 234 may be a pair of third active vibration members. In this specification, the 2-1 to 2-4 active vibration members 231, 232, 233, and 234 may be second to fifth active vibration members, and the numbers 2-1 to 2-4 do not limit the contents of this specification.

[0124] Each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 may have a different shape from the first active vibration member 211. As one embodiment of the present specification, each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 may include a square shape having the same small size as the first active vibration member 211. As another embodiment of the present specification, each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 may include a rectangular shape having a width smaller than the first active vibration member 211 and the same or larger size as the first active vibration member 211.

[0125] The second-1 active vibration member 231 may be connected or coupled to a first edge portion of the first active vibration member 211. The second-1 active vibration member 231 is substantially the same as the second-1 active vibration member 231 described in FIGS. 2 and 3, so a redundant description thereof will be omitted.

[0126] The second-second active vibration member 232 may be connected or coupled to a second edge portion of the first active vibration member 211. The second-second active vibration member 232 is substantially the same as the second-second active vibration member 232 described with reference to FIGS. 2 and 3, and therefore a redundant description thereof will be omitted.

[0127] The second-third active vibration member 233 may be connected or coupled to a third edge portion of the first active vibration member 211. For example, in the first active vibration member 211, the third edge portion may be located between the first edge portion and the second edge portion, or the third edge portion of the first active vibration member 211 may be located between the second-first active vibration member 231 and the second-second active vibration member 232. For example, the third edge portion of the first active vibration member 211 may include a side of the first active vibration member 211 that is parallel to the first direction (X). For example, the first edge portion of the second-third active vibration member 233 may be connected or coupled to the third edge portion of the first active vibration member 211 via the third adhesive member 223 of the adhesive member 220. This second-third active vibration member 233 is substantially the same as the second-first active vibration member 231 described in Figures 2 and 3, except that it is connected to the third edge portion of the first active vibration member 211 via a third adhesive member 223, so redundant explanations will be omitted.

[0128] The second-fourth active vibration member 234 may be connected or coupled to a fourth edge portion of the first active vibration member 211. For example, the fourth edge portion of the first active vibration member 211 may be parallel to the third edge portion. For example, the first edge portion of the second-fourth active vibration member 234 may be connected or coupled to the fourth edge portion of the first active vibration member 211 via the fourth adhesive member 224 of the adhesive member 220. The second-fourth active vibration member 234 is substantially the same as the second-first active vibration member 231 described in FIGS. 2 and 3 except that it is connected to the fourth edge portion of the first active vibration member 211 via the fourth adhesive member 224, and therefore, a redundant description thereof will be omitted.

[0129] The second-third active vibration member 233 and the second-fourth active vibration member 234 may be arranged parallel to each other across the center of the first active vibration member 211. Each of the second-third active vibration member 233 and the second-fourth active vibration member 234 may include a vibration element. The vibration elements of the second-third active vibration member 233 and the second-fourth active vibration member 234 are substantially the same as the vibration elements of the second-first active vibration member 231 described with reference to FIGS. 3 to 5B, and therefore, a redundant description thereof will be omitted.

[0130] According to the embodiments of the present specification, each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 can be vibrated (or displaced) by a second drive signal having the same phase as or the opposite phase to the first drive signal applied to the first active vibration member 211.

[0131] According to another embodiment of the present specification, the 2-1 to 2-4 drive signals applied to the 2-1 to 2-4 active vibration members 231, 232, 233, and 234, respectively, may be the same or different. For example, at least one of the 2-1 to 2-4 drive signals may be different. For example, at least one of the 2-1 to 2-4 drive signals may have different phases. For example, at least one of the 2-1 to 2-4 drive signals may have different amplitudes. For example, at least one of the 2-1 to 2-4 drive signals may have different phases and different amplitudes. As a result, at least one of the 2-1 to 2-4 active vibration members 231, 232, 233, and 234 may vibrate with different vibration amplitudes (or displacement amounts), thereby changing the vibration of the vibration device 200 and the vibration amplitude of the displacement force transmitted to the passive vibration member 100, thereby realizing sounds in various frequency ranges.

[0132] The third adhesive member 223 and the fourth adhesive member 224 are substantially the same as the first adhesive member 221 described with reference to FIGS. 2 and 3, and therefore, a repeated description thereof will be omitted.

[0133] In the vibration device 200 according to the third embodiment of the present specification, the connection portion 250 can include first to fourth connection members 251 , 252 , 253 , and 254 .

[0134] The first connecting member 251 may be connected or coupled between the second edge portion of the 2-1 active vibration member 231 and the rear surface 100a of the passive vibration member 100. The first connecting member 251 is substantially the same as the first connecting member 251 described in FIGS. 2 and 3, so a duplicated description thereof will be omitted.

[0135] The second connecting member 252 may be connected or coupled between the second edge portion of the second-2 active vibration member 232 and the rear surface 100a of the passive vibration member 100. The second connecting member 252 is substantially the same as the second connecting member 252 described in FIGS. 2 and 3, so a duplicated description thereof will be omitted.

[0136] The third connecting member 253 may be connected or coupled between the third edge portion of the second-third active vibration member 233 and the rear surface 100a of the passive vibration member 100. The third connecting member 253 is substantially the same as the first connecting member 251 described with reference to FIGS. 2 and 3, and therefore, a redundant description thereof will be omitted.

[0137] The fourth connecting member 254 may be connected or coupled between the fourth edge portion of the second-fourth active vibration member 234 and the rear surface 100a of the passive vibration member 100. The fourth connecting member 254 is substantially the same as the first connecting member 251 described with reference to FIGS. 2 and 3, and therefore, a redundant description thereof will be omitted.

[0138] The vibration device 200 according to the third embodiment of the present specification includes the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 connected between the first active vibration member 211 and the passive vibration member 100, thereby further increasing the vibration amplitude (or displacement amplitude) of the passive vibration member 100 and further improving the acoustic characteristics and sound pressure characteristics in the low frequency range. By changing the displacement force and the vibration amplitude transmitted to the passive vibration member 100, sounds in various frequency ranges can be realized and the acoustic characteristics and sound pressure characteristics in various frequency ranges can be improved.

[0139] Fig. 10 is a plan view showing a vibration device according to a fourth embodiment of the present specification. Fig. 10 shows a modified arrangement of the active vibration members 2-1 to 2-4 in the vibration device shown in Fig. 9. Therefore, in the following description of Fig. 10, the same reference numerals will be used for the remaining components except for the active vibration members 2-1 to 2-4 and the components related thereto, and redundant description thereof will be omitted.

[0140] 2, 7, and 10, in the vibration device 200 according to the fourth embodiment of the present specification, each of the 2-1 to 2-4 active vibration members 231, 232, 233, and 234 can be arranged at the corner portions of the edge portion of the first active vibration member 211.

[0141] Each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 may be disposed offset from the edge portion of the first active vibration member 211 toward the corner portion.

[0142] The second-first active vibration member 231 may be coupled or connected to a first edge portion of the first active vibration member 211 so as to overlap a first corner portion of the first active vibration member 211. The second-second active vibration member 232 may be coupled or connected to a second edge portion of the first active vibration member 211 so as to overlap a second corner portion diagonally opposite the first corner portion of the first active vibration member 211. The second-third active vibration member 233 may be coupled or connected to a third edge portion of the first active vibration member 211 so as to overlap a third corner portion of the first active vibration member 211. The second-fourth active vibration member 234 may be coupled or connected to a fourth edge portion of the first active vibration member 211 so as to overlap a fourth corner portion diagonally opposite the third corner portion of the first active vibration member 211.

[0143] According to the embodiments of the present specification, the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 are overlapped with the first to fourth corner portions of the first active vibration member 211, respectively, thereby preventing or minimizing cracks or breakage at the corner portions of the first active vibration member 211 when the first active vibration member 211 vibrates, thereby improving the reliability of the first active vibration member 211 or the vibration device 200.

[0144] The vibration device 200 according to the fourth embodiment of this specification can have the same effects as the vibration device 200 according to the third embodiment of this specification, and since each of the 2-1 to 2-4 active vibration members 231, 232, 233, and 234 overlaps with the corner portions of the first active vibration member 211, cracks or breaks at the corner portions of the first active vibration member 211 can be prevented or minimized, thereby improving reliability.

[0145] Fig. 11 is a plan view showing a vibration device according to a fifth embodiment of the present specification. Fig. 11 shows the second vibration section of the vibration device shown in Fig. 8, to which active vibration members 2-3 and 2-4 are added. Therefore, in the following description of Fig. 11, the same reference numerals will be used for the remaining components, except for the active vibration members 2-3 and 2-4 and the components related thereto, and redundant description thereof will be omitted.

[0146] 2, 7, and 11, in the vibration device 200 according to the fifth embodiment of the present specification, the second vibration section 230 may further include second-third and second-fourth active vibration members 233, 234.

[0147] The second-third and second-fourth active vibration members 233, 234 may be arranged so as to be inclined or tilted relative to the third and fourth edge portions of the first active vibration member 211, and may be arranged parallel to each other across the center of the first active vibration member 211. The second-third and second-fourth active vibration members 233, 234 may have the same shape and size as the second-first and second-second active vibration members 231, 232, respectively.

[0148] Each of the second-third and second-fourth active vibration members 233, 234 may be arranged to be inclined or tilted at a certain angle (θ) with respect to the first direction (X). For example, each of the second-third and second-fourth active vibration members 233, 234 may be arranged to be inclined or tilted at a certain angle (θ) with respect to the third and fourth sides of the first active vibration member 211, which are parallel to the first direction (X). For example, the first sides corresponding to the first edge portions of each of the second-first and second active vibration members 231, 232 may be inclined or tilted at a certain angle (θ) with respect to the third and fourth sides of the first active vibration member 211.

[0149] According to an embodiment of the present specification, the angle (θ) between the first side of each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 and each side of the first active vibration member 211 may be an acute angle. For example, the angle (θ) between the first side of each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 and each side of the first active vibration member 211 may be 45 degrees, but the embodiment of the present specification is not limited thereto.

[0150] According to the embodiment of the present specification, each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 may include a first corner portion overlapping with the first active vibration member 211 and a second corner portion opposite the first corner portion. Therefore, the distance between the second corner portion of each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 and the center of the first active vibration member 211 is increased compared to FIG. 3, thereby increasing the length of the vibration device 200 and thereby increasing the vibration amplitude (or displacement amplitude) of the vibration device 200.

[0151] According to an embodiment of the present specification, the second-third active vibration member 233 may be connected or coupled to the third edge portion of the first active vibration member 211 via the third adhesive member 223 of the adhesive member 220. For example, a first edge portion including a first corner portion of the second-third active vibration member 233 may be connected or coupled to the third edge portion of the first active vibration member 211 via the third adhesive member 223. The second-third active vibration member 233 is substantially the same as the second-first active vibration member 231 described in FIG. 8 except that it is connected to the third edge portion of the first active vibration member 211 via the third adhesive member 223, and therefore, a repeated description thereof will be omitted.

[0152] The second-fourth active vibration member 234 may be connected or coupled to a fourth edge portion of the first active vibration member 211 via a fourth adhesive member 224 of the adhesive member 220. For example, a first edge portion including a first corner portion of the second-fourth active vibration member 234 may be connected or coupled to a fourth edge portion of the first active vibration member 211 via the fourth adhesive member 224. The second-fourth active vibration member 234 is substantially the same as the second-first active vibration member 231 described in FIG. 8 except that it is connected to the fourth edge portion of the first active vibration member 211 via the fourth adhesive member 224, and therefore, a repeated description thereof will be omitted.

[0153] According to an embodiment of the present specification, at least one of both corners of the third edge portion of the first active vibration member 211 may overlap or be connected to the first edge portion of the second-third active vibration member 233. At least one of both corners of the fourth edge portion of the first active vibration member 211 may overlap or be connected to the first edge portion of the second-fourth active vibration member 234. As a result, each corner of the first active vibration member 211 may overlap or be connected to each of the second-first to second-fourth active vibration members 231, 232, 233, and 234. As a result, cracks or breaks at the corners of the first active vibration member 211 may be prevented or minimized when the first active vibration member 211 vibrates, thereby improving the reliability of the first active vibration member 211 or the vibration device 200.

[0154] Each of the second-third active vibration member 233 and the second-fourth active vibration member 234 may include a vibration element. The vibration elements of the second-third active vibration member 233 and the second-fourth active vibration member 234 are substantially the same as the vibration elements of the second-first active vibration member 231 described with reference to FIGS. 3 to 5B, and therefore, a redundant description thereof will be omitted.

[0155] According to the embodiments of the present specification, each of the 2-1st to 2-4th active vibration members 231, 232, 233, and 234 can be vibrated (or displaced) by a second drive signal having the same phase as or the opposite phase to the first drive signal applied to the first active vibration member 211.

[0156] According to another embodiment of the present specification, as described with reference to FIG. 9, the 2-1 to 2-4 driving signals applied to the 2-1 to 2-4 active vibration members 231, 232, 233, and 234, respectively, are the same. But often, Or different It is okay .

[0157] In the vibration device 200 according to the fifth embodiment of the present specification, the first connecting member 251 of the connecting unit 250 may be connected or coupled between the second corner portion of the second-1 active vibration member 231 and the rear surface 100a of the passive vibration member 100. The second connecting member 252 of the connecting unit 250 may be connected or coupled between the second corner portion of the second-2 active vibration member 232 and the rear surface 100a of the passive vibration member 100. As a result, the distance between the first connecting member 251 and the second connecting member 252 is increased compared to FIG. 3, thereby increasing the length of the vibration device 200 and thereby increasing the vibration amplitude (or displacement amplitude) of the vibration device 200.

[0158] In the vibration device 200 according to the fifth embodiment of the present specification, the connecting part 250 may further include third and fourth connecting members 253 and 254.

[0159] The third connecting member 253 may be connected or coupled between the second corner portion of the second-third active vibration member 233 and the rear surface 100a of the passive vibration member 100. The fourth connecting member 254 may be connected or coupled between the second corner portion of the second-fourth active vibration member 234 and the rear surface 100a of the passive vibration member 100. As a result, the distance between the third connecting member 253 and the fourth connecting member 254 is increased compared to FIG. 3, thereby increasing the length of the vibration device 200 and thereby increasing the vibration amplitude (or displacement amplitude) of the vibration device 200.

[0160] The vibration device 200 according to the fifth embodiment of the present specification can have the same effects as the vibration device 200 according to the fourth embodiment of the present specification by including the 2-1 to 2-4 active vibration members 231, 232, 233, and 234. In addition, the vibration device 200 according to the fifth embodiment of the present specification has the 2-1 to 2-4 active vibration members 231, 232, 233, and 234 each arranged to be inclined or tilted relative to the first active vibration member 211, thereby increasing the vibration amplitude (or displacement amplitude), and thereby further improving the acoustic characteristics and / or sound pressure characteristics in the low frequency range generated by the vibration of the passive vibration member 100.

[0161] FIG. 12 is a block diagram showing a vibration drive circuit according to a first embodiment of the present specification.

[0162] 2 and 12, the vibration driver circuit 400 according to the first embodiment of the present specification receives one sound source signal ( SS ), a first drive signal ( DS1 ) and multiple second drive signals ( DS2-1 ~ DS2-4 ) and can supply the generated drive signals (DS2-1 to DS2-4) to the corresponding vibration units 210 and 230.

[0163] The vibration driver circuit 400 according to the first embodiment of the present specification can include an amplifier circuit section 410.

[0164] The amplifier circuit unit 410 receives one sound source signal ( SS ) and supply it to the first active vibrating member 211 and the plurality of second active vibrating members 231, 232, 233, 234. The amplifier circuit section 410 includes a plurality of amplifier circuits 411, 412, 413, 414, each of which corresponds to the first active vibrating member 211 and the plurality of second active vibrating members 231, 232, 233, 234. 421 ~ 424 For example, the amplifier circuit section 410 may include a first amplifier circuit 411 and a plurality of second amplifier circuits 421 to 424 For example, the vibration drive circuit 400 for the embodiment of the present specification shown in Figures 3 and 7 can include a first amplifier circuit 411, a 2-1 amplifier circuit 421, and a 2-2 amplifier circuit 422. For example, the vibration drive circuit 400 for the embodiment of the present specification shown in Figures 9 to 11 can include a first amplifier circuit 411, and 2-1 to 2-4 amplifier circuits. 421 , 422 , 423 , 424 may include:

[0165] A first amplifier circuit 411 and a plurality of second amplifier circuits 421、422、423、424 Each of the first driving signals ( DS1 ) and multiple second drive signals ( DS2-1~DS2-4 ) can be generated.

[0166] The first amplifier circuit 411 amplifies the sound source signal into a first drive signal ( ) of positive or negative polarity according to a preset gain value (or gain value). DS1 ) to generate a first drive signal (DS1), and the generated first drive signal ( DS1 ) can be supplied to the first active oscillatory member 211. For example, a positive polarity first drive signal ( DS1 ) and negative polarity first drive signal ( DS1 ) can have the same period and first amplitude. DS1 ) and negative polarity first drive signal ( DS1 ) can be increased or decreased depending on the sound source signal. DS1 ) is a positive polarity first drive signal ( DS1 ) may be a signal having an opposite phase to that of

[0167] A plurality of second amplifier circuits 421、422、423、424 Each of the first drive signals ( DS1 ) and amplify it to be the same as or different from the second drive signal ( DS2-1~DS2-4 ) and the generated plurality of second drive signals ( DS2-1~DS2-4 ) can be supplied to the corresponding second active oscillatory members 231, 232, 233, 234.

[0168] A plurality of second amplifier circuits 421、422、423、424 Each gain value (or gain values) can be set to correspond to the sound range band that is to be realized by the device according to the embodiment of the present specification.

[0169] According to an embodiment of the present specification, a plurality of second amplifier circuits 421、422、423、424 The respective gain values ​​(or gain values) of the plurality of second drive signals ( DS2-1~DS2-4 ) are the first drive signals ( DS1 ) can be set to have the same phase as the plurality of second amplifier circuits. 421、422、423、424 Each of the signals converts the sound source signal into a first drive signal ( DS1 ) and a plurality of second drive signals ( DS2-1~DS2-4 ) and output it. In this case, as described above, the acoustic characteristics and sound pressure characteristics of the low frequency band generated by the vibration of the passive vibration member 100 can be improved.

[0170] According to another embodiment of the present disclosure, a plurality of second amplifier circuits 421、422、423、424 The respective gain values ​​(or gain values) of the plurality of second drive signals ( DS2-1~DS2-4 ) are the first drive signals ( DS1 ) can be set to have an opposite phase to the second amplifier circuit.421、422、423、424 Each of the signals converts the sound source signal into a first drive signal ( DS1 ) and a plurality of second drive signals ( DS2-1~DS2-4 ) and output it. In this case, as described above, the acoustic characteristics and sound pressure characteristics of the mid-low frequency band or the mid-high frequency band generated by the vibration of the passive vibration member 100 can be improved.

[0171] According to an embodiment of the present specification, a plurality of second amplifier circuits 421、422、423、424 The respective gain values ​​(or gain values) of the plurality of second drive signals ( DS2-1~DS2-4 ) is the first drive signal ( DS1 ) can be set to be different from at least one of the phase and amplitude of the second amplifier circuit. 421、422、423、424 Each of the signals converts the sound source signal into a first drive signal ( DS1 ) different from at least one of the phase and amplitude of the second drive signals ( DS2-1~DS2-4 ) and output it. For example, multiple second drive signals ( DS2-1~DS2-4 ) can be the same or different from each other. For example, DS2-1~DS2-4 At least one of the phases and amplitudes of the first drive signal ( DS1 ) can be the same or different in phase and amplitude. DS2-1~DS2-4 ) are the first drive signals ( DS1 ) and has the same phase as the first drive signal ( DS1 ) can have an amplitude larger or smaller than the amplitude of the passive vibration member 100. In this case, as described above, sounds in various frequency ranges can be realized by the vibration of the passive vibration member 100, and the acoustic characteristics and sound pressure characteristics of various frequency ranges can be improved.

[0172] FIG. 13 is a block diagram showing a vibration driver circuit according to a second embodiment of the present specification.

[0173] 2 and 13, the vibration driver circuit 400 according to the second embodiment of the present specification receives one sound source signal ( SS), a first drive signal ( DS1 ) and multiple second drive signals ( DS2-1~DS2-4 ) and generate the drive signal ( DS2-1~DS2-4 ) can be supplied to the corresponding vibration units 210, 230.

[0174] The vibration driver circuit 400 according to the second embodiment of the present specification can include an amplifier circuit 430 and a signal conversion section 440 .

[0175] The amplifier circuit 430 simultaneously receives the same sound source signal, amplifies the sound source signal by a preset gain value (or gain value), and outputs a sound source amplified signal ( SAS ) can be generated. For example, the amplifier circuit 430 can include a preamplifier and a main amplifier. The sound source signal (or acoustic signal) ( SS ) is amplified by the preamplifier, and the signal amplified by the preamplifier is further amplified by the main amplifier to produce the sound source amplified signal ( SAS ) can be output as

[0176] The signal conversion unit 440 converts the sound source amplified signal ( SAS ) to the drive signal ( DS1, DS2-1 to DS2-4 ) and convert the converted drive signal ( DS1, DS2-1 to DS2-4 ) can be supplied to the corresponding active vibration members 211, 231, 232, 233, and 234. For example, the signal conversion unit 440 can convert the sound source amplified signal ( SAS ) is converted into a drive signal ( DS1, DS2-1 to DS2-4 ) and convert the converted drive signal ( DS1, DS2-1 to DS2-4 ) can be supplied to the corresponding active oscillatory members 211, 231, 232, 233, 234.

[0177] The signal conversion unit 440 according to the embodiment of the present specification may include a plurality of signal conversion circuits 441, 451-454 corresponding to the first active vibrating member 211 and the plurality of second active vibrating members 231, 232, 233, 234, respectively. For example, the signal conversion unit 440 may include a first signal conversion circuit 441 and a plurality of second signal conversion circuits 451-454. For example, the vibration drive circuit 400 according to the embodiment of the present specification shown in FIGS. 3 and 7 may include a first signal conversion circuit 441, a second-first signal conversion circuit 451, and a second-second signal conversion circuit 452. For example, the vibration drive circuit 400 according to the embodiment of the present specification shown in FIGS. 9 to 11 may include a first signal conversion circuit 441 and second-first to second-fourth signal conversion circuits 451-454.

[0178] The first signal conversion circuit 441 converts the sound source amplified signal ( SAS ) is converted into a positive or negative first drive signal ( DS1 ), conversion The first drive signal ( DS1 ) can be supplied to the first active vibration member 211. For example, the first signal conversion circuit 441 can supply the sound source amplified signal ( SAS ) is converted into a first drive signal ( DS1 ) can be converted into a positive polarity first drive signal ( DS1 ) and negative polarity first drive signal ( DS1 ) can have the same period and first amplitude. DS1 ) and negative polarity first drive signal ( DS1 ) the first amplitude of each is increased by the source signal 、 or decrease Let The negative polarity first drive signal ( DS1 ) is a positive polarity first drive signal ( DS1 ) may be a signal having an opposite phase to that of

[0179] Each of the plurality of second signal conversion circuits 451 to 454 converts the sound source amplified signal ( SAS ) is converted into a positive or negative first drive signal ( DS1 ) to generate a plurality of second driving signals ( DS2-1~DS2-4 ) and the generated plurality of second drive signals ( DS2-1~DS2-4 ) can be supplied to the corresponding second active oscillatory members 231, 232, 233, 234.

[0180] A plurality of second signal conversion circuits 451 to 454 of Each signal conversion factor (or Gain Value ) corresponds to the range of sound to be realized by the device according to the embodiment of this specification. do It can be set as follows.

[0181] According to the embodiment of the present specification, each of the plurality of second signal conversion circuits 451 to 454 signal conversion factor (or Gain Value ) is a plurality of second drive signals ( DS2-1~DS2-4 ) are the first drive signals ( DS1 ) can be set to have the same phase as the first drive signal ( DS1 ) and a plurality of second drive signals ( DS2-1~DS2-4 ) and output it. In this case, as described above, the acoustic characteristics and sound pressure characteristics of the low frequency band generated by the vibration of the passive vibration member 100 can be improved.

[0182] According to another embodiment of the present specification, each of the plurality of second signal conversion circuits 451 to 454 signal conversion factor (or Gain Value ) is a plurality of second drive signals ( DS2-1~DS2-4 ) are the first drive signals ( DS1 ) can be set to have an opposite phase to the first driving signal ( DS1 ) and a plurality of second drive signals ( DS2-1~DS2-4 ) and output it. In this case, as described above, vinegar The acoustic characteristics and sound pressure characteristics of the mid-low frequency band or the mid-high frequency band can be improved.

[0183] According to the embodiment of the present specification, each of the plurality of second signal conversion circuits 451 to 454 signal conversion factor (or Gain Value ) is a plurality of second drive signals ( DS2-1~DS2-4 ) is the first drive signal ( DS1 ) can be set to be different from at least one of the phase and amplitude of the first drive signal ( DS1 ) different from at least one of the phase and amplitude of the second drive signals ( DS2-1~DS2-4 ) and output it. For example, multiple second drive signals ( DS2-1~DS2-4 ) can be the same or different from each other. For example, DS2-1~DS2-4 At least one of the phases and amplitudes of the first drive signal ( DS1 ) can be the same or different in phase and amplitude. DS2-1~DS2-4 ) are the first drive signals ( DS1 ) and has the same phase as the first drive signal ( DS1 ) can have an amplitude larger or smaller than the amplitude of the passive vibration member 100. In this case, as described above, sounds in various frequency ranges can be realized by the vibration of the passive vibration member 100, and the acoustic characteristics and sound pressure characteristics of various frequency ranges can be improved.

[0184] The vibration drive circuit 400 according to the second embodiment of this specification can have the same effect as the vibration drive circuit 400 described in FIG. 12, and can reduce the number of amplifier circuits used compared to the vibration drive circuit 400 described in FIG. 12.

[0185] Figure 14 is another cross-sectional view taken along line A-A' in Figure 1. Figure 14 shows the device described in Figures 1 to 13 configured with a plurality of vibration devices. Therefore, in the description of Figure 14, the same reference numerals are used for the remaining components except for the plurality of vibration devices and the components related thereto, and redundant description thereof will be omitted.

[0186] Referring to FIG. 14, a device according to another embodiment of the present specification may include a plurality of vibration devices 200-1 to 200-n coupled to a passive vibration member 100.

[0187] Each of the multiple vibration devices 200-1 to 200-n may be configured with any one of the vibration devices according to the fifth embodiment of this specification described with reference to Figures 1 to 13. For example, each of the multiple vibration devices 200-1 to 200-n may be configured with a vibration device that is the same as or different from the vibration device 200 described with reference to Figures 1 to 13. Therefore, a redundant description of each of the multiple vibration devices 200-1 to 200-n will be omitted.

[0188] According to an embodiment of the present specification, the plurality of vibration devices 200-1 to 200-n can be divided (or classified) into a first group and a second group. Each of the first group and the second group can include one or more vibration devices from the plurality of vibration devices 200-1 to 200-n. For example, one or more vibration devices from the plurality of vibration devices 200-1 to 200-n can be included in the first group, and the remaining one or more vibration devices from the plurality of vibration devices 200-1 to 200-n, excluding the one or more vibration devices included in the first group, can be included in the second group. For example, the first group can be a first vibration group or a first drive group, and the second group can be a second vibration group or a second drive group.

[0189] The number of vibration devices 200-1 to 200-n included in the first group may be the same as or different from the number of vibration devices 200-1 to 200-n included in the second group.

[0190] According to an embodiment of the present specification, the plurality of vibration devices 200-1 to 200-n may be classified (or divided) into a first group and a second group based on their placement positions. For example, based on their placement positions along the first direction (X) and / or the second direction (Y), the odd-numbered vibration devices 200-1, 200-3, ... among the plurality of vibration devices 200-1 to 200-n may be included in the first group, and the even-numbered vibration devices 200-2, 200-4, ..., 200-n among the plurality of vibration devices 200-1 to 200-n may be included in the second group.

[0191] According to another embodiment of the present disclosure, the passive vibration member 100 has an intermediate line ( CL ) as the basis, the first area ( A1 ) and the second area ( A2 ) can be included. For example, the first region ( A1 ) is the left region of the passive vibration member 100, and the second region ( A2 ) may be the right region of the passive vibration member 100. As a result, among the multiple vibration devices 200-1 to 200-n, the first region ( A1 ) vibration devices 200-1, 200-2, 200-3, ··· is included in the first group, and among the plurality of vibration devices 200-1 to 200-n, the second region ( A2 ) and vibration devices 200-n may be included in the second group.

[0192] According to one embodiment of the present specification, the driving signals applied to one or more vibration devices 200-1 to 200-n included in the first group are applied to one or more vibration devices 200-1 to 200-n included in the second group. AndThe drive signals applied to the one or more vibration devices 200-1 to 200-n included in the first group may be the same as the drive signals applied to the one or more vibration devices 200-1 to 200-n included in the first group. For example, the first drive signal and the plurality of second drive signals applied to the one or more vibration devices 200-1 to 200-n included in the second group may have the same phase (or the same phase and the same amplitude) as the first drive signal and the plurality of second drive signals applied to the one or more vibration devices 200-1 to 200-n included in the second group. This may further improve the acoustic characteristics and / or sound pressure characteristics in the low frequency range generated by the vibration of the passive vibration member 100, as described above.

[0193] According to another embodiment of the present specification, each of the plurality of second driving signals applied to one or more vibration devices 200-1 to 200-n included in each of the first and second groups may have an opposite phase (or the same amplitude as the opposite phase) to the first driving signal applied to one or more vibration devices 200-1 to 200-n included in each of the first and second groups. As a result, as described above, the acoustic characteristics and sound pressure characteristics of the mid-low frequency band or the mid-high frequency band generated by the vibration of the passive vibration member 100 may be improved.

[0194] According to another embodiment of the present specification, the driving signals applied to one or more vibration devices 200-1 to 200-n included in the first group may be applied to one or more vibration devices 200-1 to 200-n included in the second group. And The phase and amplitude of each of the first drive signal and / or the plurality of second drive signals applied to the one or more vibration devices 200-1 to 200-n included in the second group may be different from the phase and amplitude of each of the first drive signal and / or the plurality of second drive signals applied to the one or more vibration devices 200-1 to 200-n included in the first group. As a result, as described above, sounds in various frequency ranges may be generated (or output) by the vibration of the passive vibration member 100, and the acoustic characteristics and sound pressure characteristics of various frequency ranges may be improved.

[0195] FIG. 15 is a graph showing the acoustic output characteristics of the device according to the first embodiment of the present specification. In FIG. 15, the horizontal axis represents frequency ( Frequency , Hz ), and the vertical axis is the amplitude ( Amplitude [au] ) and Fig. 15 shows a double logarithmic graph ( log-log graph 15, the thick solid line represents the acoustic output characteristics of the device when the second drive signal applied to each of the plurality of second active vibration members has the same phase as the first drive signal applied to the first active vibration member, as described in FIG. 6A, and the solid line represents the acoustic output characteristics of the device when the second drive signal applied to each of the plurality of second active vibration members has the opposite phase to the first drive signal applied to the first active vibration member, as described in FIG. 6B.

[0196] As can be seen from Figure 15, the thick solid line shows the 400Hz It can be seen that when the second drive signal applied to each of the plurality of second active vibration members has the same phase as the first drive signal applied to the first active vibration member, the sound pressure increases. 400Hz It can be seen that the acoustic characteristics and sound pressure characteristics are improved as follows.

[0197] As can be seen from Figure 15, the solid line is 400Hz As a result, when the second drive signal applied to each of the second active vibration members has an opposite phase to the first drive signal applied to the first active vibration member, 400Hz It can be seen that the acoustic characteristics and sound pressure characteristics are improved.

[0198] The vibration device according to the embodiment of the present specification can be applied to a vibration device disposed in a device. The device according to the embodiment of the present specification can be applied to a mobile device, a video phone, a smart watch ( smart watch ), Watch Phone ( watch phone ), wearable devices ( Wearable apparatus ), foldable devices ( foldable apparatus ), Rollable equipment ( Rollable device) , Bendable equipment ( bendable apparatus ), flexible equipment ( flexible apparatus ), curved equipment ( curved apparatus ), slide equipment ( sliding apparatus ), variable equipment ( variable apparatus ), electronic notebook, electronic book, PMP ( portable multimedia player ), PDA( Personal Digital Assistant ), MP3 players, mobile medical devices, desktop PCs ( Desktop PC ), laptop PC ( laptop PC ), Netbook computers ( netbook computer ), workstation ( workstation ), navigation, vehicle navigation, vehicle display device, vehicle device, theater device, theater display device, television, wallpaper ( wall paper ) Equipment, Signage ( signage The vibration device of the present specification may be applied to electronic devices, game devices, notebook computers, monitors, cameras, video cameras, home appliances, and the like. The vibration device of the present specification may be applied to an organic light-emitting lighting device or an inorganic light-emitting lighting device. When applied to a lighting device, the vibration device may function as both a light source and a speaker. When applied to a mobile device, the vibration device of the present specification may function as one or more of a speaker, a receiver, and a haptic device, and the embodiments of the present specification are not limited thereto.

[0199] An apparatus according to an embodiment of the present invention can be described as follows.

[0200] The device according to the embodiment of the present specification includes a passive vibration member. and, A vibration device connected to the back surface of a passive vibration member and, Support member on the back of the passive vibration member and The vibration device includes a first vibration section and a second vibration part connected to the periphery of the first vibration part; and, A connecting section that connects the periphery of the second vibration section and the back surface of the passive vibration member and May contain can .

[0201] According to some embodiments of the present disclosure, the first vibration section includes a first active vibration member having first and second edge portions parallel to each other, and the second vibration section includes a second active vibration member and a second active vibration member coupled to the first and second edge portions of the first active vibration member, respectively. and The second active vibration member 2-1 and the second active vibration member 2-2 may be arranged parallel to each other with the center of the first active vibration member in between.

[0202] According to some embodiments of the present disclosure, each of the second-first active vibration member and the second-second active vibration member has a first edge portion overlapping the first active vibration member. and, The second edge portion connected to the connecting portion and the connecting portion includes a first connecting member connected between the second edge portion of the second-1 active vibration member and the passive vibration member; and, a second connecting member connected between the second edge portion of the second active vibration member and the passive vibration member; and may include:

[0203] According to some embodiments herein, the corner portion of the first active vibration member may overlap with the first edge portion of each of the second-first and second-second active vibration members.

[0204] According to some embodiments of the present disclosure, each of the second-1 active vibration member and the second-2 active vibration member may be disposed at an angle relative to the first and second edge portions of the first active vibration member, respectively.

[0205] According to some embodiments of the present disclosure, each of the second-first active vibration member and the second-second active vibration member has a first edge portion overlapping the first active vibration member. and, The second corner connected to the connecting part and the connecting portion includes a first connecting member connected between the second corner portion of the second-1 active vibration member and the passive vibration member; and, a second connecting member connected between the second corner portion of the second active vibration member and the passive vibration member; and may include:

[0206] According to some embodiments of the present specification, the first vibration section includes a first active vibration member having first to fourth edge portions, and the second vibration section includes a second active vibration member connected to the first edge portion of the first active vibration member. and a second active vibration member connected to a second edge portion of the first active vibration member so as to be parallel to the second active vibration member across the center of the first active vibration member; and , a second and third active vibration member connected to a third edge portion of the first active vibration member; and, a second-fourth active vibration member connected to a fourth edge portion of the first active vibration member so as to be parallel to the second-third active vibration member across the center of the first active vibration member; and may include:

[0207] According to some embodiments of the present specification, the width of each of the 2-1 to 2-4 active vibration members may be smaller than that of the first active vibration member. 。

[0208] According to some embodiments of the present specification, each of the 2-1 to 2-4 active vibration members has a first edge portion overlapping with the first active vibration member. and, The second edge portion connected to the connecting portion and The connecting portion includes a first connecting portion connected between the second edge portion of the second-1 active vibration member and the passive vibration member. Materials and a second connecting member connected between the second edge portion of the second-second active vibration member and the passive vibration member; and a third connecting member connected between the second edge portion of the second-third active vibration member and the passive vibration member. and, a fourth connecting member connected between the second edge portion of the second-fourth active vibration member and the passive vibration member; and may include:

[0209] According to some embodiments of the present specification, the corner portion of the first active vibration member may overlap with the first edge portion of each of the 2-1 to 2-4 active vibration members.

[0210] According to some embodiments of the present specification, each of the 2-1 and 2-2 active vibration members may be arranged at an angle relative to the first and second edge portions of the first active vibration member, respectively, and each of the 2-3 and 2-4 active vibration members may be arranged at an angle relative to the third and fourth edge portions of the first active vibration member, respectively.

[0211] According to some embodiments of the present specification, each of the 2-1 to 2-4 active vibration members has a first corner portion overlapping with the first active vibration member. and, a first connecting member including a connecting portion and a second corner portion connected thereto, the connecting portion being connected between the second corner portion of the second-1 active vibration member and the passive vibration member; and a second connecting member connected between the second corner portion of the second-second active vibration member and the passive vibration member; and a third connecting member connected between the second corner portion of the second-third active vibration member and the passive vibration member; and, a fourth connecting member connected between the second edge portion of the second-fourth active vibration member and the passive vibration member; and may include:

[0212] The device according to the embodiment of the present specification includes a passive vibration member. and, A plurality of vibration devices connected to the rear surface of the passive vibration member and, Support member on the back of the passive vibration member and each of the plurality of vibration devices includes a first active vibration member and 2-1 and 2-2 active vibration members connected to the periphery of the first active vibration member so as to be parallel to each other across the center of the first active vibration member; and, The passive vibration member may include a second-first active vibration member, a second-second active vibration member, and a connecting portion connected to the rear surface of the passive vibration member.

[0213] According to some embodiments of the present specification, the first active vibration member includes first and second edge portions that are parallel to each other, and the first edge portions of the second-1 and second-2 active vibration members may be respectively coupled to the first and second edge portions of the first active vibration member.

[0214] According to some embodiments herein, the corner portion of the first active vibration member may overlap with the first edge portion of each of the second-first and second-second active vibration members.

[0215] According to some embodiments of the present disclosure, each of the second-1 active vibration member and the second-2 active vibration member may be disposed at an angle relative to the first and second edge portions of the first active vibration member, respectively.

[0216] According to some embodiments of the present specification, each of the multiple vibration devices further includes a 2-3 active vibration member and a 2-4 active vibration member connected to the periphery of the first active vibration member so as to be parallel to each other across the center of the first active vibration member, and the connecting portion may be connected to each of the 2-1 to 2-4 active vibration members and the back surface of the passive vibration member.

[0217] According to some embodiments of the present specification, the first active vibration member may include first and second edge portions that are parallel to each other and third and fourth edge portions that are parallel to each other, and the first edge portions of the 2-1 and 2-2 active vibration members may be respectively coupled to the first and second edge portions of the first active vibration member, and the first edge portions of the 2-3 and 2-4 active vibration members may be respectively coupled to the third and fourth edge portions of the first active vibration member.

[0218] According to some embodiments of the present specification, the corner portion of the first active vibration member may overlap with the first edge portion of each of the 2-1 to 2-4 active vibration members.

[0219] According to some embodiments of the present specification, the first active vibration member may include first and second edge portions that are parallel to each other and third and fourth edge portions that are parallel to each other, and the 2-1 and 2-2 active vibration members may each be arranged at an incline relative to the first and second edge portions of the first active vibration member, and the 2-3 and 2-4 active vibration members may each be arranged at an incline relative to the third and fourth edge portions of the first active vibration member, respectively.

[0220] According to some embodiments of the present disclosure, the plurality of vibration devices may include a first vibration device having one or more vibration devices. 1g Loop and 2g loop and Including, 1g The number of vibrators included in the loop is 2g The number of vibration devices included in the loop may be the same or different.

[0221] According to some embodiments of the present invention, 1g The drive signal applied to one or more vibration devices included in the loop is 2g It may be the same as or different from the drive signal applied to one or more vibration devices included in the loop.

[0222] According to some embodiments herein, the active vibrating member may include a vibrating element including a piezoelectric material.

[0223] According to some embodiments of the present specification, each of the first active vibration member, the second-first active vibration member, and the second-second active vibration member and The piezoelectric layer includes a vibration element having a piezoelectric layer, the piezoelectric layer including a plurality of piezoelectric portions including a piezoelectric material. and, A flexible section disposed between the piezoelectric sections and may include:

[0224] According to some embodiments of the present specification, at least one or more of the plurality of piezoelectric units configured on each of the 2-1 active vibration member and the 2-2 active vibration member may be overlapped with at least one or more of the plurality of piezoelectric units configured on the first active vibration member.

[0225] According to some embodiments herein, the drive signals applied to each of the 2-1 and 2-2 active vibration members may have the same phase or opposite phase as the drive signal applied to the first active vibration member.

[0226] According to some embodiments herein, the drive signal applied to the 2-1 active vibration member may be the same as or different from the drive signal applied to the 2-2 active vibration member.

[0227] According to some embodiments herein, the drive signals applied to each of the 2-1 and 2-2 active vibration members may have the same phase or opposite phase as the drive signal applied to the first active vibration member.

[0228] According to some embodiments of the present specification, the drive signals applied to each of the 2-1 to 2-4 active vibration members may have the same phase or the opposite phase to the drive signal applied to the first active vibration member.

[0229] According to some embodiments of the present specification, at least one of the driving signals applied to each of the 2-1 to 2-4 active vibration members One , at least one of different phases and different amplitudes One It can have.

[0230] According to some embodiments of the present specification, at least one of the phase and amplitude of the drive signals applied to each of the 2-1 to 2-4 active vibration members is adjusted. One , at least one of the phase and amplitude of the drive signal applied to the first active vibration member Tsuto Can be different.

[0231] According to some embodiments herein, the vibration device may further include a weight member disposed on the first active vibration member.

[0232] According to some embodiments herein, the linkage may include a resilient material.

[0233] According to some embodiments of the present disclosure, the passive vibration member is a display having a plurality of pixels that realizes an image. Department The display panel may be made of, or may comprise, one or more of the following materials: wood, rubber, plastic, flexible glass, fabric, cloth, paper, metal, and leather.

[0234] The present specification described above is not limited to the above-mentioned examples and the attached drawings, and it is understood that various substitutions, modifications, and changes can be made within the scope of the technical idea of ​​the present specification by those skilled in the art. Those who Therefore, the scope of the present specification is defined by the following claims, and all changes and modifications that come within the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present specification. [Explanation of symbols]

[0235] 100: Passive vibration member 200: Vibration device 210: First vibration part 211: First active vibration member 230: Second vibration section 231: No. 2-1 active vibration member 232: 2nd-2nd active vibration member 233: 2nd-3rd active vibration member 234: 2nd-4th active vibration members 250: Connection part 251: First connecting member 252: Second connecting member 253: Third connecting member 254: Fourth connecting member 260: Heavy components 300: Support member 350: Connecting member 400: Vibration drive circuit 410: Amplification circuit section 430: Amplification circuit 440: Signal conversion unit

Claims

1. a passive vibration member; a vibration device coupled to a rear surface of the passive vibration member; a support member on a rear surface of the passive vibration member, The vibration device is a first vibration unit; a second vibration part connected to the periphery of the first vibration part; a connecting portion connected to a periphery of the second vibration portion and a rear surface of the passive vibration member, the first vibrating section includes a first active vibrating member having first and second edge portions parallel to each other; the second vibration section includes a second-1 active vibration member and a second-2 active vibration member respectively connected to first and second edge portions of the first active vibration member; The apparatus, wherein the second-first active vibration member and the second-second active vibration member are disposed at an angle to the first and second edge portions of the first active vibration member, respectively.

2. The device described in claim 1, wherein the second-1 active vibration member and the second-2 active vibration member are arranged parallel to each other, sandwiching the center of the first active vibration member.

3. Each of the second-1 active vibration member and the second-2 active vibration member is a first edge portion overlapping the first active vibration member; a second edge portion connected to the connecting portion; The connecting portion is a first connecting member connected between a second edge portion of the second-first active vibration member and the passive vibration member; 3. The apparatus of claim 2, further comprising a second connecting member connected between a second edge portion of the second-second active vibration member and the passive vibration member.

4. 4. The apparatus of claim 3, wherein a corner portion of the first active vibration member overlaps a first edge portion of each of the second-1 and second-2 active vibration members.

5. Each of the second-1 active vibration member and the second-2 active vibration member is a first edge portion overlapping the first active vibration member; a second corner portion connected to the connecting portion, The connecting portion is a first connecting member connected between the second corner portion of the second-first active vibration member and the passive vibration member; 3. The apparatus of claim 2, further comprising a second connecting member connected between the second corner portion of the second-second active vibration member and the passive vibration member.

6. the first vibrating portion includes a first active vibrating member having first to fourth edge portions; The second vibration unit is a second active vibration member connected to a first edge portion of the first active vibration member; a second-second active vibration member connected to a second edge portion of the first active vibration member so as to be parallel to the second-first active vibration member across the center of the first active vibration member; a second and third active vibration member connected to a third edge portion of the first active vibration member; 2. The device according to claim 1, further comprising: second-fourth active vibration members connected to a fourth edge portion of the first active vibration member so as to be parallel to the second-third active vibration members across the center of the first active vibration member.

7. 7. The device according to claim 6, wherein the width of each of the second-1st to second-4th active vibration members is smaller than that of the first active vibration member.

8. Each of the 2-1 to 2-4 active vibration members includes a first edge portion overlapping the first active vibration member and a second edge portion connected to the connecting portion, The connecting portion is a first connecting member connected between a second edge portion of the second-first active vibration member and the passive vibration member; a second connecting member connected between a second edge portion of the second-second active vibration member and the passive vibration member; a third connecting member connected between the second edge portion of the second-third active vibration member and the passive vibration member; 7. The apparatus of claim 6, further comprising a fourth connecting member connected between the second edge portions of the second to fourth active vibration members and the passive vibration member.

9. 9. The device according to claim 8, wherein the corner portion of the first active vibration member overlaps with the first edge portion of each of the second-first to second-fourth active vibration members.

10. the second-1st and second-2nd active vibration members are disposed at an angle to the first and second edge portions of the first active vibration member, respectively; 7. The device according to claim 6, wherein the second-third and second-fourth active vibration members are disposed at an angle to the third and fourth edge portions of the first active vibration member, respectively.

11. Each of the 2-1 to 2-4 active vibration members includes a first corner portion overlapping with the first active vibration member and a second corner portion connected to the connecting portion, The connecting portion is a first connecting member connected between the second corner portion of the second-first active vibration member and the passive vibration member; a second connecting member connected between the second corner portion of the second-second active vibration member and the passive vibration member; a third connecting member connected between the second corner portion of the second-third active vibration member and the passive vibration member; 7. The apparatus of claim 6, further comprising a fourth connecting member connected between the second edge portions of the second to fourth active vibration members and the passive vibration member.

12. a passive vibration member; a plurality of vibration devices coupled to a rear surface of the passive vibration member; a support member on a rear surface of the passive vibration member, Each of the plurality of vibration devices is a first active vibration member; a second active vibration member and a second active vibration member connected to the periphery of the first active vibration member so as to be parallel to each other across the center of the first active vibration member; a connecting portion connected to each of the second-first active vibration member and the second-second active vibration member and to a rear surface of the passive vibration member; a weight member disposed on the first active vibration member, Device.

13. the first active vibration member includes first and second edge portions that are parallel to one another; 13. The apparatus of claim 12, wherein a first edge portion of each of the second-1 and second-2 active vibration members is coupled to a first and second edge portion of the first active vibration member, respectively.

14. 13. The apparatus of claim 12, wherein a corner portion of the first active vibration member overlaps a first edge portion of each of the second-first and second-second active vibration members.

15. 13. The device according to claim 12, wherein the second-first active vibration member and the second-second active vibration member are disposed at an angle to the first and second edge portions of the first active vibration member, respectively.

16. Each of the plurality of vibration devices further includes a second-third active vibration member and a second-fourth active vibration member connected to the periphery of the first active vibration member so as to be parallel to each other across the center of the first active vibration member, 13. The device according to claim 12, wherein the coupling portion is coupled to the rear surface of each of the 2-1st to 2-4th active vibration members and the passive vibration member.

17. the first active vibration member includes first and second edge portions parallel to each other and third and fourth edge portions parallel to each other; a first edge portion of each of the second-1st and second-2nd active vibration members is connected to a first edge portion and a second edge portion of the first active vibration member, respectively; 17. The apparatus of claim 16, wherein a first edge portion of each of the second-third and second-fourth active vibration members is coupled to a third and fourth edge portion of the first active vibration member, respectively.

18. 17. The device of claim 16, wherein the corner portion of the first active vibration member overlaps with the first edge portion of each of the 2-1 to 2-4 active vibration members.

19. the first active vibration member includes first and second edge portions parallel to each other and third and fourth edge portions parallel to each other; the second-1st and second-2nd active vibration members are disposed at an angle to the first and second edge portions of the first active vibration member, respectively; 17. The apparatus of claim 16, wherein the second-third and second-fourth active vibration members are disposed at an angle to the third and fourth edge portions of the first active vibration member, respectively.

20. the plurality of vibration devices includes a first group and a second group each having one or more vibration devices; The device of claim 16 , wherein the number of vibration devices included in the first group is the same as or different from the number of vibration devices included in the second group.

21. 21. The device of claim 20, wherein the drive signal applied to one or more vibration devices included in the first group is the same as or different from the drive signal applied to one or more vibration devices included in the second group.

22. The apparatus of any one of claims 2 to 21, wherein the first active vibration member, the second-first active vibration member, and the second-second active vibration member include vibration elements including piezoelectric material.

23. each of the first active vibration member, the second-first active vibration member, and the second-second active vibration member includes a vibration element having a piezoelectric layer; The piezoelectric layer a plurality of piezoelectric portions including a piezoelectric material; The device according to any one of claims 2 to 21, further comprising a flexible section disposed between the plurality of piezoelectric sections.

24. The device described in claim 23, wherein at least one or more of the plurality of piezoelectric portions formed on each of the second-first active vibration member and the second-second active vibration member are superimposed on at least one or more of the plurality of piezoelectric portions formed on the first active vibration member.

25. The device of any one of claims 2 to 19, wherein the drive signals applied to each of the second-1st and second-2nd active vibration members have the same phase or opposite phase as the drive signal applied to the first active vibration member.

26. The apparatus of any one of claims 2 to 19, wherein the drive signal applied to the second-first active oscillatory member is the same as or different from the drive signal applied to the second-second active oscillatory member.

27. 27. The apparatus of claim 26, wherein the drive signals applied to each of the second-1 and second-2 active vibration members have the same phase or opposite phase as the drive signal applied to the first active vibration member.

28. An apparatus described in any one of claims 6 to 11 and 16 to 19, wherein the drive signals applied to each of the 2-1 to 2-4 active vibration members have the same phase or opposite phase as the drive signal applied to the first active vibration member.

29. The device according to any one of claims 6 to 11 and 16 to 19, wherein at least one of the drive signals applied to each of the 2-1 to 2-4 active vibration members has at least one of different phases and different amplitudes.

30. An apparatus described in any one of claims 6 to 11 and 16 to 19, wherein at least one of the phase and amplitude of the drive signal applied to each of the 2-1 to 2-4 active vibration members is different from at least one of the phase and amplitude of the drive signal applied to the first active vibration member.

31. The apparatus according to any one of claims 2 to 11, wherein the vibration device further comprises a weight member disposed on the first active vibration member.

32. The device of any preceding claim, wherein the link comprises a resilient material.

33. The device of any one of claims 1 to 32, wherein the passive vibration member is a display panel including a display portion having a plurality of pixels that realize an image, or includes one or more materials selected from the group consisting of wood, rubber, plastic, flexible glass, fiber, cloth, paper, metal, and leather.

Images