Vibration device and electronic device including the same

Abstract

The present disclosure relates to a vibration device and an electronic device including the same. A vibration device includes a vibration member, a plurality of vibration portions overlapping each other, and a connection member connecting at least a portion of the plurality of vibration portions to the vibration member.

Description

[0001] Cross-reference to related applications

[0002] This application claims the benefit of Korean Patent Application No. 10-2021-0194793, filed on December 31, 2021, which is incorporated herein by reference as if fully set forth herein. Technical Field

[0003] This disclosure relates to a vibration device and an electronic device including the vibration device. Background Technology

[0004] Vibration devices can vibrate based on types such as coil type, which includes magnets and coils, or piezoelectric type, which uses piezoelectric devices to output sound.

[0005] Due to the fragile nature of piezoelectric devices, piezoelectric resonators can be easily damaged by external impacts, leading to low reliability in sound reproduction. Furthermore, because of the low piezoelectric constant of piezoelectric devices, piezoelectric resonators have the disadvantage that their sound characteristics and / or sound pressure level characteristics are lower than those of coil-type devices in the low-frequency and high-frequency regions. Summary of the Invention

[0006] Therefore, the inventors have recognized the aforementioned problems and have conducted various experiments to realize a vibration device capable of enhancing sound quality and sound pressure level characteristics. Through these experiments, the inventors have invented a device that includes a novel vibration mechanism for enhancing sound quality and sound pressure level characteristics.

[0007] Therefore, embodiments of this disclosure are aimed at devices that substantially eliminate one or more problems caused by the limitations and disadvantages of related technologies.

[0008] One aspect of this disclosure is intended to provide an apparatus that can cause a vibrating component to vibrate to generate vibration or sound and can enhance sound characteristics and / or sound pressure level characteristics.

[0009] Additional features and aspects will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practicing the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and obtained by means of structures particularly pointed out in the written description or available therefrom, the claims thereof, and the accompanying drawings.

[0010] To achieve these other aspects of the inventive concept, as embodied and broadly described herein, a vibration device includes: a vibration member; a plurality of overlapping vibration portions; and a connecting member that connects at least a portion of the plurality of vibration portions to the vibration member.

[0011] On the other hand, a vibration device includes: a vibration member; a plurality of overlapping vibration portions, each of the plurality of vibration portions including a vibration layer; and a connecting member that connects at least a portion of the vibration portions to the vibration member, each of the vibration layers including: a plurality of first portions; and a plurality of second portions comprising a material different from the plurality of first portions.

[0012] On the other hand, an electronic device including the aforementioned vibration device is provided.

[0013] Other systems, methods, features, and advantages will be apparent or will become apparent to those skilled in the art upon examination of the following drawings and detailed description. All such additional systems, methods, features, and advantages are intended to be included within the scope of this specification and disclosure, and are protected by the appended claims. Nothing in this section should be construed as limiting the claims. Other aspects and advantages are discussed below in conjunction with embodiments of this disclosure.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed inventive concept. Attached Figure Description

[0015] The accompanying drawings illustrate aspects and embodiments of this disclosure and, together with the specification, serve to illustrate the principles of this disclosure. The drawings are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this application.

[0016] Figure 1 An apparatus according to an embodiment of the present disclosure is shown.

[0017] Figure 2 It is along Figure 1 The cross-sectional view taken by line A-A' is shown.

[0018] Figures 3A to 3D The displacement of a vibration device according to an embodiment of this disclosure is shown.

[0019] Figures 4A to 4D The displacement of a vibration device according to an embodiment of this disclosure is shown.

[0020] Figures 5A to 5D It is shown Figure 2 Perspective views of various embodiments of the vibration layer shown.

[0021] Figure 6 An experimental example and based on Figure 2 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown.

[0022] Figure 7This is a cross-sectional view showing a vibration device according to another embodiment of the present disclosure.

[0023] Figure 8 It shows Figure 7 The rear surface of the vibrating device shown.

[0024] Figure 9A and Figure 9B The displacement of a vibration device according to another embodiment of this disclosure is shown.

[0025] Figure 10 This is a cross-sectional view showing a vibration device according to another embodiment of the present disclosure.

[0026] Figure 11 It shows Figure 10 The rear surface of the vibrating device shown.

[0027] Figure 12A and Figure 12B The displacement of a vibration device according to another embodiment of this disclosure is shown.

[0028] Figure 13 This is a cross-sectional view showing a vibration device according to another embodiment of the present disclosure.

[0029] Figure 14 It shows Figure 13 The rear surface of the vibrating device shown.

[0030] Figure 15 This is a cross-sectional view showing a vibration device according to another embodiment of the present disclosure.

[0031] Figure 16 It shows Figure 15 The rear surface of the vibrating device shown.

[0032] Figure 17 An apparatus according to an embodiment of the present disclosure is shown.

[0033] Figure 18 It is along Figure 17 The cross-sectional view taken by line B-B' is shown.

[0034] Figure 19 The sound output characteristics of an experimental example are shown compared to those of a vibration device according to an embodiment of this disclosure.

[0035] Figure 20 The sound output characteristics of an experimental example are shown compared to those of a vibration device according to an embodiment of this disclosure.

[0036] Figure 21 It shows that according to Figure 7The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown.

[0037] Figure 22 An experimental example and based on Figure 7 and Figure 10 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown.

[0038] Figure 23 An experimental example and based on Figure 10 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown.

[0039] Figure 24 An experimental example and based on Figure 10 , Figure 13 and Figure 15 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown.

[0040] Throughout the accompanying drawings and detailed description, unless otherwise stated, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the relative dimensions and descriptions of these elements may be exaggerated. Detailed Implementation

[0041] Implementations of this disclosure will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description, detailed descriptions of well-known functions or configurations may be omitted where such obscurity would unnecessarily obscure aspects of this disclosure. The described progression of processing steps and / or operations is exemplary; however, the order of steps and / or operations is not limited to the order set forth herein and may be varied as is known in the art, except that they must occur in a specific order. Unless otherwise stated, the same reference numerals always refer to the same elements. The names of the various elements used in the following description are chosen solely for ease of writing and may therefore differ from those used in actual products.

[0042] The advantages and features of this disclosure, and its implementation methods, will be illustrated by the following description of embodiments with reference to the accompanying drawings. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is defined only by the scope of the claims.

[0043] The shapes, dimensions, ratios, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore, embodiments of this disclosure are not limited to the details shown. Throughout the specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions will be omitted where it would unnecessarily obscure the essential points of this disclosure.

[0044] When using terms such as “comprise,” “have,” “include,” “contain,” “form,” “comprise,” “form of,” etc., one or more additional elements may be added, unless a term such as “only” is used. Unless the context explicitly indicates otherwise, singular terms may include plural forms.

[0045] When interpreting components, although no explicit description of such an error or tolerance range is provided, the component is interpreted as including an error range.

[0046] When describing positional relationships, for example, when using terms such as "on," "above," "below," "above," "below," "near," "close to," or "adjacent," "side," or "right next to," one or more parts may be situated between two parts unless more restrictive terms such as "closely adjacent," "directly," or "nearly" are used. For example, when a structure is described as being positioned relative to another structure as "on," "above," "below," "above," "below," "near," "close to," or "adjacent," "side," or "right next to," this description should be interpreted to include situations where the structures are in contact with each other and situations where a third structure is situated or inserted between them. Furthermore, the terms "front," "back," "left," "right," "top," "bottom," "downward," "upward," "upper," "lower," etc., refer to any frame of reference.

[0047] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” “before,” etc., discontinuous cases may be included unless more restrictive terms such as “exactly,” “immediately after,” or “directly” are used.

[0048] It should be understood that the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used. These terms are intended to identify corresponding elements from other elements, and the basis, order, or number of corresponding elements shall not be limited by these terms. Unless otherwise specified, the expression “connected,” “coupled,” or “adhered” to another element or layer means that the element or layer may be directly connected or adhered to another element or layer, or indirectly connected or adhered to another element or layer, with one or more intermediate elements or layers disposed or inserted between the elements or layers.

[0049] The terms “first horizontal axis direction,” “second horizontal axis direction,” and “vertical axis direction” should not be interpreted solely based on the geometric relationship that the directions are perpendicular to each other, but may refer to directions that have a wider directional range within the functionally operable scope of the components of this disclosure.

[0050] The term "at least one" should be understood to include any and all combinations of one or more items listed in connection with the terms. For example, "at least one of the first, second, and third items" means a combination of all items derived from two or more of the first, second, and third items, as well as the first, second, or third item alone.

[0051] The expressions "first element," "second element," and " / or" "third element" should be understood as one of the first element, the second element, and the third element, or any or all combinations of the first element, the second element, and the third element. As an example, A, B, and / or C can refer to: only A; only B; only C; any or some combinations of A, B, and C; or all of A, B, and C.

[0052] As will be fully understood by those skilled in the art, the features of the various embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may interoperate with each other in various ways and be technically driven. Embodiments of this disclosure may be performed independently of each other or may be performed together in an interdependent relationship.

[0053] In the following, preferred embodiments of the device according to this disclosure will be described in detail with reference to the accompanying drawings. Where possible, the same reference numerals will be used throughout the drawings to refer to the same or similar parts. Since the scale of each element shown in the drawings differs from the actual scale for ease of description, this disclosure is not limited to the scales shown.

[0054] Figure 1 An apparatus according to an embodiment of the present disclosure is shown, and Figure 2 It is along Figure 1 The cross-sectional view taken by line A-A' is shown. Figures 3A to 3DThe displacement of a vibration device according to an embodiment of this disclosure is shown, and Figures 4A to 4D The displacement of a vibration device according to an embodiment of this disclosure is shown.

[0055] Reference Figure 1 and Figure 2 The vibration device 1 according to the embodiments of this disclosure may be referred to as a flexible vibration structure, flexible vibrator, flexible vibration generating device, flexible vibration generator, flexible sound generator, flexible sound device, flexible sound generating device, flexible sound generator, flexible actuator, flexible loudspeaker, flexible piezoelectric loudspeaker, membrane actuator, membrane piezoelectric composite actuator, membrane loudspeaker, membrane piezoelectric loudspeaker or membrane piezoelectric composite loudspeaker, but the terminology is not limited thereto.

[0056] The vibration device 1 according to the embodiments of this disclosure may include a vibration member 20 and a vibration part 10. For example, the vibration member 20 may be a vibration object, a display panel, a vibration plate, or a front member, but the embodiments of this disclosure are not limited thereto.

[0057] The vibrating member 20 can be a display panel for displaying images. The display panel can display images (e.g., electronic images, digital images, still images, or video images). For example, the display panel can output light to display images. The display panel of the display member can be a curved display panel or one of all types of display panels such as liquid crystal display panels, organic light-emitting display panels, quantum dot light-emitting display panels, micro-light-emitting diode display panels, and electrophoretic display panels. The display panel can be a flexible display panel. For example, the display panel can be a flexible light-emitting display panel, a flexible electrophoretic display panel, a flexible electrowetting display panel, a flexible light-emitting diode display panel, or a flexible quantum dot light-emitting display panel, but embodiments of this disclosure are not limited thereto.

[0058] According to another embodiment of this disclosure, the vibrating member 20 may include a vibrating plate, which may be one or more materials selected from metal, wood, rubber, plastic, glass, cloth, fiber, paper, mirror, and leather. For example, the paper may be cone paper used for loudspeakers. For example, the cone paper may be pulp or foam plastic, etc., but the embodiments of this disclosure are not limited thereto.

[0059] For example, the vibrating member 20 may include one or more of the following: a display panel including a plurality of pixels displaying an image; or vehicle interior material; vehicle window; building ceiling material; building window; building interior material; aircraft interior material; and aircraft window, but embodiments of this disclosure are not limited thereto. For example, the vibrating member 20 may include one or more of the following: a display panel including a plurality of pixels displaying an image; a screen panel on which an image is projected from a display device; a lighting panel; a sign panel; vehicle interior material; vehicle window; vehicle exterior material; building ceiling material; building interior material; building window; and a mirror, but embodiments of this disclosure are not limited thereto. For example, the display panel may be a curved display panel or one of all types of display panels such as a liquid crystal display panel, an organic light-emitting display panel, a light-emitting diode display panel, a quantum dot light-emitting display panel, a micro light-emitting diode display panel, and an electrophoretic display panel. The display panel may be a flexible display panel. For example, the display panel may be a flexible light-emitting display panel, a flexible electrophoretic display panel, a flexible electrowetting display panel, a flexible light-emitting diode display panel, or a flexible quantum dot light-emitting display panel, but embodiments of this disclosure are not limited thereto. For example, a non-display panel may include a light-emitting diode (LED) lighting panel (or device), an organic light-emitting diode (OLED) lighting panel (or device), or an inorganic light-emitting diode (INED) lighting panel (or device), but embodiments of this disclosure are not limited thereto. For example, a vibrating object may include one or more of the following: a display panel comprising a plurality of pixels displaying an image; or an LED lighting panel (or device); an organic light-emitting diode (OLED) lighting panel (or device); or an inorganic light-emitting diode (INED) lighting panel (or device), but embodiments of this disclosure are not limited thereto.

[0060] The vibration unit 10 can cause the vibration member 20 to vibrate. For example, the vibration unit 10 can be implemented at the rear surface of the vibration member 20 to directly cause the vibration member 20 to vibrate. For example, the vibration unit 10 can cause the vibration member 20 to vibrate at the rear surface of the vibration member 20 to provide sound and / or tactile feedback to the user based on the vibration of the vibration member 20. For example, the vibration member 20 can output sound based on the vibration of the vibration unit 10. The vibration unit 10 can output sound by using the vibration member 20 as a vibrating plate. For example, the vibration unit 10 can output sound to the forward region of the vibration member 20 by using the vibration member 20 as a vibrating plate. For example, the vibration unit 10 can generate sound such that the direction of sound travel is the forward region of the display panel or the vibration member 20. The vibration unit 10 can output sound by causing the vibration member 20 to vibrate. For example, the vibration unit 10 can directly cause the vibration member 20 to vibrate to output sound. For example, the vibration member 20 can be a vibrating object, a vibrating plate, or a front member, but the terminology is not limited thereto.

[0061] According to embodiments of this disclosure, the vibration unit 10 can vibrate based on a vibration drive signal synchronized with an image displayed by the display panel, which serves as a vibration member 20, thereby causing the display panel to vibrate. According to another embodiment of this disclosure, the vibration unit 10 can vibrate based on a tactile feedback signal (or haptic feedback signal) synchronized with a user touch applied to a touch panel (or touch sensor layer) disposed on or embedded in the display panel, and thus cause the display panel to vibrate. Therefore, the display panel can vibrate based on the vibration of the vibration unit 10 to provide one or more of auditory and tactile feedback to the user (or viewer).

[0062] The vibration unit 10 of the vibration device 1 according to the embodiments of the present disclosure may include a plurality of vibration generating units 10a and 10b.

[0063] Multiple vibration generating parts 10a and 10b may overlap or stack to shift (or drive or vibrate) in the same direction. For example, the multiple vibration generating parts 10a and 10b may have substantially the same size, but embodiments of the present disclosure are not limited thereto. For example, the multiple vibration generating parts 10a and 10b may have substantially the same size within the tolerance range of the manufacturing process, but embodiments of the present disclosure are not limited thereto. Therefore, the multiple vibration generating parts 10a and 10b can maximize the amplitude displacement of the vibration part 10 and / or the amplitude displacement of the vibration member 20. One side (end, end, outer surface, or each corner) of each of the multiple vibration generating parts 10a and 10b may be aligned or disposed on a virtual extension line extending along the thickness direction Z.

[0064] For example, in at least one of the plurality of vibration generating units 10a and 10b, the displacement direction and amplitude direction of each of the plurality of vibration generating units 10a and 10b may not match the displacement direction and amplitude direction of the other vibration generating unit, and therefore, the amplitude displacement of the vibration unit 10 may not be maximized. For example, when at least one of the plurality of vibration generating units 10a and 10b has different dimensions outside the error range of the manufacturing process, the displacement direction and amplitude direction of each of the plurality of vibration generating units 10a and 10b may not match the displacement direction and amplitude direction of the other vibration generating unit, and therefore, the amplitude displacement of the vibration unit 10 may not be maximized. When at least one of the plurality of vibration generating units 10a and 10b is shifted in different directions, the displacement direction of each of the plurality of vibration generating units 10a and 10b may not match the displacement direction of the other vibration generating unit, and therefore, the amplitude displacement of the vibration unit 10 may not be maximized.

[0065] The vibration unit 10 according to embodiments of this disclosure may include two or more vibration generating units 10a and 10b, which are stacked to shift (or vibrate or drive) in the same direction. In the following description, an example of the vibration unit 10 including a first vibration generating unit 10a and a second vibration generating unit 10b will be described.

[0066] According to embodiments of this disclosure, the vibration unit 10 may be connected to or disposed on the vibration member 20. For example, the first vibration generating unit 10a may be connected to or disposed on the vibration member 20. The first vibration generating unit 10a may be connected to or disposed on the vibration member 20 using a first adhesive layer 31.

[0067] The first vibration generating part 10a and the second vibration generating part 10b according to embodiments of the present disclosure may include a first cover member 41 (or a first protective member 41) and a second cover member 42 (or a second protective member 42). The first cover member 41 may be disposed between the first vibration generating part 10a and the second vibration generating part 10b. The second cover member 42 may be disposed on the second vibration generating part 10b. A separate cover member may not be disposed on the bottom surface of the first vibration generating part 10a. For example, the first vibration generating part 10a may be directly connected to or disposed on the vibration member 20 using a first adhesive layer 31, without the need for a separate cover member.

[0068] The first vibration generating unit 10a may include a vibration layer 11, a first electrode layer 12, and a second electrode layer 13. The second vibration generating unit 10b may include a vibration layer 14, a first electrode layer 15, and a second electrode layer 16.

[0069] The vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b may include a piezoelectric material (or an electroactive material) exhibiting a piezoelectric effect. For example, a piezoelectric material may have the following characteristics: when pressure or torsion is applied to a crystal structure by an external force, a potential difference is generated due to the polarization (or polling) caused by the change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on the voltage applied thereto. The vibration layer 11 may include a ceramic-based material for achieving relatively high vibration, or may include a piezoelectric ceramic having a perovskite-based crystal structure. For example, the vibration layer 11 may be referred to by terms such as vibration layer, piezoelectric layer, piezoelectric material layer, electroactive layer, vibration section, piezoelectric material section, electroactive section, piezoelectric structure, piezoelectric composite layer, piezoelectric composite material, or piezoelectric ceramic composite material, but the terminology is not limited thereto.

[0070] Vibration layers 11 and 14 may comprise a ceramic matrix material for achieving relatively high vibrations, or may comprise a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may exhibit both piezoelectric and inverse piezoelectric effects and may be an oriented plate-like structure. The perovskite crystal structure may be represented by the chemical formula "ABO3". In the chemical formula, "A" may comprise a divalent metal element, and "B" may comprise a tetravalent metal element. For example, in the chemical formula "ABO3", "A" and "B" may be cations, and "O" may be an anion. For example, the chemical formula "ABO3" may comprise one or more of lead(II) titanate (PbTiO3), lead zirconate (PbZrO3), lead zirconate titanate (PbZrTiO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3), but embodiments of this disclosure are not limited thereto.

[0071] In perovskite crystal structures, the position of the central ion can be altered by external stress or magnetic field, changing the polarization (or polarization), and a piezoelectric effect can be generated based on this change in polarization (or polarization). In perovskite crystal structures including PbTiO3, the position of the Ti ion corresponding to the central ion can be changed to alter the polarization (or polarization), and thus a piezoelectric effect can be generated. For example, in perovskite crystal structures, a cubic shape with a symmetrical structure can be changed into a tetragonal shape, an orthorhombic shape, and a rhombohedral shape, each with an asymmetrical structure, by using external stress or magnetic field, and thus a piezoelectric effect can be generated. The polarization (or polarization) at the morphotropic phase boundary (MPB) of the tetragonal and rhombohedral structures can be high, and the polarization (or polarization) can be easily realigned, thereby obtaining high piezoelectric properties.

[0072] According to another embodiment of this disclosure, the vibrating layers 11 and 14 may include one or more materials selected from lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), and niobium (Nb), but the embodiments of this disclosure are not limited thereto.

[0073] According to another embodiment of this disclosure, the vibrating layers 11 and 14 may comprise lead zirconate titanate (PZT) based materials, including lead (Pb), zirconium (Zr), and titanium (Ti); or may comprise lead nickel niobate (PZNN) based materials, including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of this disclosure are not limited thereto. Furthermore, the vibrating layer 11 may comprise at least one or more of calcium titanate (CaTiO3), BaTiO3, and SrTiO3, all of which do not contain Pb, but the embodiments of this disclosure are not limited thereto.

[0074] The vibration layer 11 of the first vibration generating unit 10a and the vibration layer 14 of the second vibration generating unit 10b can be polarized (or polarized) by applying a specific voltage to the first electrode layers 12 and 15 and the second electrode layers 13 and 16 in a specific temperature atmosphere or a temperature atmosphere changing from high temperature to room temperature, but the embodiments of this disclosure are not limited thereto. For example, when a vibration driving signal (or sound signal or voice signal) is applied, the vibration layers 11 and 14 can alternately and repeatedly contract and expand based on the sound signal (or sound signal or voice signal) applied from the outside to the first electrode layers 12 and 15 and the second electrode layers 13 and 16 based on the inverse piezoelectric effect, and thus can vibrate. For example, the vibration layers 11 and 14 can be vibrated by using the first electrode layers 12 and 15 and the second electrode layers 13 and 16 based on vertical vibration. 33 and lateral vibration d 31 The vibrating component 20 is made to vibrate.

[0075] The vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b can be polarized (or polarized) in the same direction. For example, the vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b can be configured such that the polarization direction (or polarization direction) faces upward relative to the thickness direction Z of the vibration member 20. Alternatively, the vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b can be configured such that the polarization direction (or polarization direction) faces downward relative to the thickness direction Z of the vibration member 20. The first vibration generating section 10a and the second vibration generating section 10b can be stacked and can have the same polarization direction (or the same polarization direction), and therefore, the vibration member 20 can vibrate based on the vertical direction. 33Vibrating in the same manner. For example, the vibration layer 11 of the first vibration generating unit 10a can be based on the vertical direction d using the first electrode layer 12 and the second electrode layer 13. 33 The vibrating member 20 is made to vibrate. The vibration layer 14 of the second vibration generating unit 10b can be based on vertical vibration d using the first electrode layer 15 and the second electrode layer 16. 33 Vibrating member 20 is made to vibrate. The vertical direction of each of the vibrating layers 11 and 14 can increase the displacement of the vibrating member (or vibrating plate or vibrating object) based on the contraction and expansion performed in the vertical direction, thereby further enhancing the vibration characteristics.

[0076] The first electrode layer 12 of the first vibration generating section 10a and the first electrode layer 15 of the second vibration generating section 10b can be disposed on the first surface (or lower surface) of the vibration layers 11 and 14. The first electrode layers 12 and 15 can have the same size as each of the vibration layers 11 and 14, or they can have a smaller size than each of the vibration layers 11 and 14. For example, the first electrode layers 12 and 15 can be formed on the entire first surface of the vibration layers 11 and 14 except for the edge portions (or peripheral portions).

[0077] The second electrode layer 13 of the first vibration generating section 10a and the second electrode layer 16 of the second vibration generating section 10b can be disposed on the second surface (or upper surface) of the vibration layers 11 and 14 that is different from or opposite to the first surface. The second electrode layers 13 and 16 can have the same dimensions as each of the vibration layers 11 and 14, or they can have dimensions smaller than each of the vibration layers 11 and 14. For example, the second electrode layers 13 and 16 can be formed on the entire second surface of the vibration layers 11 and 14 except for the edge portions (or peripheral portions). For example, the second electrode layers 13 and 16 can have the same shape as each of the vibration layers 11 and 14, but embodiments of this disclosure are not limited thereto.

[0078] Each of the first electrode layers 12 and 15 and the second electrode layers 13 and 16 according to embodiments of this disclosure may include carbon, but embodiments of this disclosure are not limited thereto. For example, one or more of the first electrode layers 12 and 15 and the second electrode layers 13 and 16 may include a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent or semi-transparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of this disclosure are not limited thereto. The opaque conductive material may include gold (Au), silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), or Ag containing glass frit or alloys thereof, but embodiments of this disclosure are not limited thereto. According to another embodiment of this disclosure, each of the first electrode layers 12 and 15 and the second electrode layers 13 and 16 may include Ag with low resistivity to enhance the electrical and / or vibrational properties of each of the vibration layers 11 and 14. For example, the carbon may be a carbon material including graphite, carbon black, Ketjen black, and carbon nanotubes.

[0079] In each of the first vibration generating section 10a and the second vibration generating section 10b, the first electrode layer 12 of the first vibration generating section 10a may be configured to be closer to the vibrating member 20 than the second electrode layer 13; however, embodiments of the present disclosure are not limited thereto. For example, in a vibration section 10 according to the present disclosure that includes the first vibration generating section 10a and the second vibration generating section 10b, the first electrode layer of each of the first vibration generating section 10a and the second vibration generating section 10b may be configured to be closer to the vibrating member 20 than the second electrode layer.

[0080] Vibrating layers 11 and 14 can be polarized (or polarized) by applying a specific voltage to the first electrode layers 12 and 15 and the second electrode layers 13 and 16 in a specific temperature atmosphere or in a temperature atmosphere that changes from high temperature to room temperature, but embodiments of the present disclosure are not limited thereto. For example, the vibrating part 10 can alternately and repeatedly contract and expand based on sound signals (or sound signals or speech signals) applied from the outside to the first electrode layers 12 and 15 and the second electrode layers 13 and 16 based on the inverse piezoelectric effect, and thus can be displaced or can vibrate (or driven).

[0081] The vibration layer 11 of the first vibration generating section 10a may have the same dimensions as the vibration layer 14 of the second vibration generating section 10b. To maximize or increase the displacement or amplitude range of the vibration section 10, the vibration layer 11 of the first vibration generating section 10a may substantially overlap with the vibration layer 14 of the second vibration generating section 10b within the tolerance range of the manufacturing process. For example, the vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b may be implemented as a stacked structure, overlapping to have the same dimensions without overlapping, and thus, the displacement or amplitude range of the vibration section 10 can be maximized or increased. For example, the vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b may be implemented as a stacked structure, precisely overlapping to have the same dimensions without overlapping, and thus, the displacement or amplitude range of the vibration section 10 can be maximized or increased.

[0082] In the first vibration generating unit 10a, a first cover member 41 may be disposed on the second electrode layer 13. The first cover member 41 may protect the second electrode layer 13. For example, the first cover member 41 may include a plastic material, a fiber material, or a wood material, but the embodiments of this disclosure are not limited thereto.

[0083] In the second vibration generating section 10b, a second cover member 42 may be disposed on the second electrode layer 16. The second cover member 42 may protect the second electrode layer 16. For example, the second cover member 42 may include plastic material, fiber material or wood material, but the embodiments of this disclosure are not limited thereto.

[0084] The first cover member 41 and the second cover member 42, respectively included in the first vibration generating section 10a and the second vibration generating section 10b, may be made of the same material or different materials. Each of the first cover member 41 and the second cover member 42 may be a polyimide film or a polyethylene terephthalate film, but the embodiments of this disclosure are not limited thereto.

[0085] Each of the first vibration generating section 10a and the second vibration generating section 10b may include at least one first adhesive layer 31, a second adhesive layer 32, a third adhesive layer 33, and a fourth adhesive layer 34.

[0086] In the first vibration generating section 10a, a first adhesive layer 31 may be disposed between the vibration layer 11 and the vibration member 20. For example, the first adhesive layer 31 may be disposed between the vibration member 20 and the first electrode layer 12 on the vibration layer 11. The first adhesive layer 31 in each of the first vibration generating section 10a and the second vibration generating section 10b, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may have the function of protecting the member and attaching the member. For example, the first adhesive layer 31 may include one or more of thermosetting adhesives, UV-curing adhesives, and thermal bonding adhesives. For example, the first adhesive layer 31 may include a thermal bonding adhesive. The thermal bonding adhesive may be thermoactive or thermosetting. For example, the first adhesive layer 31 including the thermal bonding adhesive can connect or couple the first vibration generating section 10a to the vibration member 20 by heat and pressure. For example, the first adhesive layer 31 including the thermal bonding adhesive can connect or couple the first vibration generating section 10a to the vibration member 20 by heat.

[0087] In the first vibration generating section 10a, a second adhesive layer 32 may be disposed between the vibration layer 11 and the first cover member 41. For example, the second adhesive layer 32 may be disposed between the first cover member 41 and the second electrode layer 13 on the vibration layer 11. The first cover member 41 may be disposed on the first vibration generating section 10a via the second adhesive layer 32. For example, the first cover member 41 may be coupled to or connected to the second surface (or the second electrode layer 13) of the first vibration generating section 10a via a lamination process using the second adhesive layer 32.

[0088] In the first vibration generating section 10a, the first adhesive layer 31 and the second adhesive layer 32 can be connected or coupled to each other between the first cover member 41 and the vibration member 20. For example, in the first vibration generating section 10a, the first adhesive layer 31 and the second adhesive layer 32 can be connected or coupled to each other at the edge portion (or peripheral portion) between the first cover member 41 and the vibration member 20. Therefore, in the first vibration generating section 10a, the vibration layer 11 can be surrounded by the first adhesive layer 31 and the second adhesive layer 32. For example, the first adhesive layer 31 and the second adhesive layer 32 can completely surround the entire first vibration generating section 10a.

[0089] In the second vibration generating section 10b, a third adhesive layer 33 may be disposed between the vibration layer 14 and the first cover member 41. For example, the third adhesive layer 33 may be disposed between the first cover member 41 and the first electrode layer 15 on the vibration layer 14. The first cover member 41 may be disposed on the first surface (or the first electrode layer 15) of the second vibration generating section 10b via the third adhesive layer 33. For example, the first cover member 41 may be coupled or connected to the first surface (or the first electrode layer 15) of the second vibration generating section 10b via a lamination process using the third adhesive layer 33.

[0090] In the second vibration generating section 10b, a fourth adhesive layer 34 may be disposed between the vibration layer 14 and the second cover member 42. For example, the fourth adhesive layer 34 may be disposed between the second cover member 42 and the second electrode layer 16 on the vibration layer 14. The second cover member 42 may be disposed on the second vibration generating section 10b via the fourth adhesive layer 34. For example, the second cover member 42 may be coupled to or connected to the second surface (or the second electrode layer 16) of the second vibration generating section 10b via a lamination process using the fourth adhesive layer 34.

[0091] In the second vibration generating section 10b, the third adhesive layer 33 and the fourth adhesive layer 34 can be connected or coupled to each other between the first cover member 41 and the second cover member 42. For example, in the second vibration generating section 10b, the third adhesive layer 33 and the fourth adhesive layer 34 can be connected or coupled to each other at the edge portion (or peripheral portion) between the first cover member 41 and the second cover member 42. Therefore, in the second vibration generating section 10b, the vibration layer 14 can be surrounded by the third adhesive layer 33 and the fourth adhesive layer 34. For example, the third adhesive layer 33 and the fourth adhesive layer 34 can completely surround the entire second vibration generating section 10b.

[0092] In each of the first vibration generating section 10a and the second vibration generating section 10b, each of the first adhesive layer 31, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may include an electrically insulating material. For example, each of the first adhesive layer 31, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may include an electrically insulating material that has adhesive properties and is capable of compression and decompression. For example, one or more of the first adhesive layer 31, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may include epoxy resin, acrylic resin, silicone resin, or polyurethane resin, but embodiments of this disclosure are not limited thereto.

[0093] According to embodiments of this disclosure, the vibration unit 10 can be based on the vibration drive signal relative to the thickness direction Z of the vibration member 20 in the d direction. 33 Shift (or vibrate or drive) in the direction (or Z-axis direction). The first vibration generating part 10a and the second vibration generating part 10b can be configured such that the horizontal length b (or X-axis length) and the vertical length a (or Y-axis length) have different shapes, so that d 33The directional displacement is maximized. For example, the vibrating part 10 can be configured such that one of the horizontal length b or the vertical length a is longer. For example, the horizontal length b of the vibrating part 10 can be set to be longer than the vertical length a. For example, the horizontal length b of the vibrating part 10 can be 6 cm to 12 cm, and the vertical length a of the vibrating part 10 can be 3 cm to 6 cm. For example, the vibrating part 10 can be configured as a rectangular structure, but the embodiments of this disclosure are not limited thereto.

[0094] Reference Figures 3A to 3D According to embodiments of this disclosure, the vibrating section 10 can be configured such that its horizontal length b is longer than its vertical length a. The vibrating section 10 can be configured such that its polarization direction (or polarizing direction) is upward relative to the thickness direction Z of the vibrating member 20. Furthermore, as... Figures 3A to 3D As shown, a constant voltage (+) (or positive voltage) can be applied to the upper electrode (or second electrode) of the vibrating section 10, and a reverse voltage (-) (or negative voltage) can be applied to the lower electrode (or first electrode) of the vibrating section 10. Therefore, the direction of polarization (or polarization) can meet the constant voltage (+), and thus, the vibrating section 10 can deform to be compressed in the thickness direction Z and extend to the outer side of the plane. In the vibrating section 10, since the horizontal length b is longer than the vertical length a, d 31 Deformation in the direction (or horizontal direction) can be greater than d 33 The deformation in the direction (or vertical direction) is greater. For example... Figures 3A to 3D As shown, a reverse voltage (-) (or negative voltage) can be applied to the upper electrode (or second electrode) of the vibrating section 10, and a constant voltage (+) (or positive voltage) can be applied to the lower electrode (or first electrode) of the vibrating section 10. Therefore, the direction of polarization (or polarization) can meet the reverse voltage (-), and thus, the vibrating section 10 can deform to extend in the thickness direction Z and contract from the outer side of the plane. In the vibrating section 10, since the horizontal length b is longer than the vertical length a, d 33 Deformation in the direction (or perpendicular direction) can be greater than d 31 The deformation is greater in the direction (or horizontal direction).

[0095] Reference Figures 4A to 4D ,like Figure 4A and Figure 4BAs shown, the stacked first vibration generating section 10a and second vibration generating section 10b can be configured relative to the thickness direction Z of the vibrating member 20. In the vibrating section 10 having such a stacked structure, the vibration displacement can be greater than that of vibrating sections arranged parallel in the horizontal directions X or Y. Figure 4C and Figure 4D The vibration is more concentrated, and therefore, the displacement of the vibrating component (or vibrating plate or vibrating object) can increase, thereby further enhancing the vibration characteristics. For example, refer to Figure 4A and Figure 4C As can be seen, the vibration unit 10 according to the embodiment of this disclosure is in d 33 The deformation in the directional (or vertical) direction is relatively large. (Reference) Figure 4B and Figure 4D As can be seen, the vibration unit 10 according to the embodiment of this disclosure is in d 31 The deformation in the direction (or horizontal direction) is relatively large.

[0096] Figures 5A to 5D It is shown Figure 2 Perspective views of various embodiments of the vibrating layer are shown. Figures 5A to 5D The diagram shows the vibration layer 11 of the first vibration generating section 10a and the second vibration generating section 10b of the vibration section 10. However, the embodiments of the present disclosure are not limited to this, and can be applied in the same way to the vibration layer 14 of the second vibration generating section 10b.

[0097] Reference Figures 5A to 5D The vibration layer 11 according to the embodiments of the present disclosure may include a plurality of first portions 11a and a plurality of second portions 11b.

[0098] Reference Figure 5A The vibration layer 11 according to embodiments of the present disclosure may include a plurality of first portions 11a and a plurality of second portions 11b. For example, the plurality of first portions 11a and the plurality of second portions 11b may be arranged alternately and repeatedly in a first direction X (or a second direction Y). For example, the first direction X may be the width direction of the vibration layer 11, and the second direction Y may be the length direction of the vibration layer 11 intersecting the first direction X. However, embodiments of the present disclosure are not limited to this, and the first direction X may be the length direction of the vibration layer 11, and the second direction Y may be the width direction of the vibration layer 11.

[0099] Each of the plurality of first portions 11a may include an inorganic material portion. The inorganic material portion may include a piezoelectric material, a composite piezoelectric material, or an electroactive material having a piezoelectric effect.

[0100] Each of the plurality of first portions 11a may include a ceramic-based material for achieving relatively high vibrations, or may include a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have both piezoelectric and inverse piezoelectric effects and may be an oriented plate-like structure. The perovskite crystal structure may be represented by the chemical formula "ABO3". In the chemical formula, "A" may include a divalent metal element, and "B" may include a tetravalent metal element. For example, in the chemical formula "ABO3", "A" and "B" may be cations, and "O" may be an anion. For example, the first portion 11a may include one or more of lead(II) titanate (PbTiO3), lead zirconate (PbZrO3), lead zirconate titanate (PbZrTiO3), barium titanate (BaTiO3), and strontium titanate (SrTiO3), but embodiments of this disclosure are not limited thereto. For example, each of the plurality of first portions 11a may include materials referenced above. Figure 2 The piezoelectric material of the vibrating layer 11 described in Figure 4 is substantially the same as that of the piezoelectric material, and therefore the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0101] Each of the plurality of first portions 11a according to embodiments of the present disclosure may be disposed between a plurality of second portions 11b, each of the plurality of first portions 11a having a first width W1 parallel to a first direction X (or a second direction Y) and a length parallel to the second direction Y (or the first direction X). Each of the plurality of second portions 11b may have a second width W2 parallel to the first direction X (or the second direction Y) and may have a length parallel to the second direction Y (or the first direction X). The first width W1 may be the same as or different from the second width W2. For example, the first width W1 may be greater than the second width W2. For example, the first portions 11a and the second portions 11b may include linear or strip-shaped components having the same or different dimensions. Thus, the vibrating layer 11 may have a 2-2 composite structure with piezoelectric properties possessing 2-2 vibration modes, and therefore may have a resonant frequency of 20 kHz or less, but embodiments of the present disclosure are not limited thereto. For example, the resonant frequency of the vibrating layer 11 may vary based on one or more of its shape, length, and thickness.

[0102] In the vibrating layer 11, a plurality of first portions 11a and a plurality of second portions 11b may be arranged (or arranged) in parallel on the same plane (or the same layer). Each of the plurality of second portions 11b may be configured to fill the gap between two adjacent first portions 11a, and thus may be connected to or attached to an adjacent first portion 11a. Therefore, the vibrating layer 11 may extend to a desired size or length based on the lateral coupling (or connection) of the first portions 11a and the second portions 11b.

[0103] In the vibrating layer 11, the width W2 of each of the plurality of second portions 11b may gradually decrease in the direction from the center portion of the vibrating layer 11 or the vibrating device 1 to its two edge portions (or both ends or two peripheral portions).

[0104] According to embodiments of this disclosure, when the vibrating layer 11 or the vibrating device 1 vibrates in the vertical direction Z (or the thickness direction), the second portion 11b with the largest width W2 among the plurality of second portions 11b can be disposed at the portion with the greatest stress concentration. When the vibrating layer 11 or the vibrating device 1 vibrates in the vertical direction Z, the second portion 11b with the smallest width W2 among the plurality of second portions 11b can be disposed at the portion generating the relatively least stress. For example, the second portion 11b with the largest width W2 among the plurality of second portions 11b can be disposed at the central portion of the vibrating layer 11, and the second portion 11b with the smallest width W2 among the plurality of second portions 11b can be disposed at the two edge portions (or two peripheral portions) of the vibrating layer 11. Therefore, when the vibrating layer 11 or the vibrating device 1 vibrates in the vertical direction Z, the overlap of resonant frequencies or interference of sound waves occurring at the portion with the greatest stress concentration can be minimized, and thus the drop in sound pressure level occurring in the low and high frequency bands can be reduced. For example, the flatness of the sound characteristics can be the magnitude of the deviation between the highest and lowest sound pressure levels.

[0105] In the vibrating layer 11, the plurality of first portions 11a may have different dimensions (or widths). For example, the dimension (or width) of each of the plurality of first portions 11a may gradually decrease or increase in the direction from the central portion of the vibrating layer 11 or the vibrating device 1 to its two edge portions (or end portions or two peripheral portions). In this case, the sound pressure level characteristics of the sound of the vibrating layer 11 can be enhanced by various unique vibration frequencies based on the vibration of the plurality of first portions 11a with different dimensions, and the sound reproduction frequency band can be extended.

[0106] Each of the plurality of second portions 11b can be disposed between the plurality of first portions 11a. Therefore, in the vibrating layer 11 or vibrating device 1, the vibrational energy based on the links in a unit lattice of the first portions 11a can be increased by the second portions 11b, and thus, the vibrational characteristics can be increased, and piezoelectric properties and flexibility can be ensured. For example, the second portions 11b may comprise one of epoxy-based polymers, acrylic polymers, and silicone polymers, but embodiments of this disclosure are not limited thereto.

[0107] Each of the plurality of second portions 11b according to embodiments of the present disclosure may be configured with an organic material portion. For example, the organic material portion may be disposed between two adjacent inorganic material portions, and thus may absorb impacts applied to the inorganic material portions (or the first portion) and may release stress concentrated on the inorganic material portions, thereby enhancing the durability of the vibration layer 11 or the vibration device 1 and achieving flexibility of the vibration layer 11 or the vibration device 1. Therefore, the vibration device 1 may be flexible and thus may be bent into a shape that matches the shape of the curved portion of the support member. For example, the vibration device 1 may be flexible and thus may be arranged along the shape of the curved portion of the support member.

[0108] The second portion 11b according to embodiments of this disclosure may have a lower modulus and viscoelasticity than the first portion 11a, and therefore, the second portion 11b may enhance the reliability of the first portion 11a, which is susceptible to impact due to the brittle nature of the first portion 11a. For example, the second portion 11b may comprise a material having a loss coefficient of about 0.01 to about 1 and a modulus of about 0.1 GPa to about 10 GPa.

[0109] The organic material portion included in the second part 11b may include organic materials, organic polymers, organic piezoelectric materials, or organic non-piezoelectric materials that have flexible properties compared to the inorganic material portion of the first part 11a. For example, the second part 11b may be referred to as an adhesive portion, a flexible portion, a bending portion, a damping portion, or an extended portion, etc., but embodiments of this disclosure are not limited thereto.

[0110] Multiple first portions 11a and multiple second portions 11b can be disposed on (or connected to) the same plane, and therefore, the vibration layer 11 according to this embodiment can have the form of a single thin film. For example, the vibration layer 11 can have a structure in which multiple first portions 11a are connected to one side thereof. For example, the vibration layer 11 can have a structure in which multiple first portions 11a are connected throughout the vibration layer 11. For example, the vibration layer 11 can vibrate in the vertical direction by means of the first portions 11a having vibration characteristics, and can be bent into a curved shape by means of the flexible second portions 11b. In the vibration layer 11 according to this embodiment, the dimensions of the first portions 11a and the second portions 11b can be set based on the piezoelectric characteristics and flexibility required by the vibration layer 11 or the vibration device 1. For example, when the vibration layer 11 requires piezoelectric characteristics rather than flexibility, the dimensions of the first portions 11a can be set to be larger than the dimensions of the second portions 11b. In another embodiment of this disclosure, when the vibration layer 11 requires flexibility rather than piezoelectric characteristics, the dimensions of the second portions 11b can be set to be larger than the dimensions of the first portions 11a. Therefore, the size of the vibrating layer 11 can be adjusted based on the desired characteristics, and thus, the vibrating layer 11 can be easily designed.

[0111] The first electrode layer 12 may be disposed on the first surface (or lower surface) of the vibration layer 11. The first electrode layer 12 may be commonly disposed on the first surface of each of the plurality of first portions 11a and the first surface of each of the plurality of second portions 11b, or coupled to the first surface of each of the plurality of first portions 11a and the first surface of each of the plurality of second portions 11b, and may be electrically connected to the first surface of each of the plurality of first portions 11a. For example, the first electrode layer 12 may be in the form of a single electrode (or one electrode) disposed on the entire first surface of the vibration layer 11. For example, the first electrode layer 12 may have substantially the same shape as the vibration layer 11, but embodiments of this disclosure are not limited thereto.

[0112] The second electrode layer 13 may be disposed on a second surface (or rear surface) of the vibration layer 11 that is different from (or opposite to) the first surface. The second electrode layer 13 may be disposed together on the second surface of each of the plurality of first portions 11a and the second surface of each of the plurality of second portions 11b, or coupled to the second surface of each of the plurality of first portions 11a and the second surface of each of the plurality of second portions 11b, and may be electrically connected to the second surface of each of the plurality of first portions 11a. For example, the second electrode layer 13 may be in the form of a single electrode (or one electrode) disposed on the entire second surface of the vibration layer 11. For example, the second electrode layer 13 may have a substantially the same shape as the vibration layer 11, but embodiments of this disclosure are not limited thereto.

[0113] One or more of the first electrode layer 12 and the second electrode layer 13 according to embodiments of this disclosure may include a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent or semi-transparent conductive material may include indium tin oxide (ITO) or indium zinc oxide (IZO), but embodiments of this disclosure are not limited thereto. The opaque conductive material may include aluminum (Al), copper (Cu), gold (Au), molybdenum (Mo), magnesium (Mg), or alloys thereof, but embodiments of this disclosure are not limited thereto.

[0114] The vibrating layer 11 can be polarized (or polarized) by applying a specific voltage to the first electrode layer 12 and the second electrode layer 13 in a specific temperature atmosphere or in a temperature atmosphere that changes from high temperature to room temperature, but embodiments of this disclosure are not limited thereto. For example, when a vibration driving signal (or voice signal) is applied, the vibrating layer 11 can vibrate by alternately and repeatedly contracting and expanding based on the inverse piezoelectric effect of the sound signal (or voice signal) applied from the outside to the first electrode layer 12 and the second electrode layer 13. For example, the vibrating layer 11 can vibrate based on the planar vibration of at least one of the first electrode layer 12 and the second electrode layer 13. 31 Vibration. The displacement of the vibrating component can be increased based on the contraction and expansion of the vibrating layer 11 in the planar direction, and thus the vibration can be further enhanced.

[0115] Reference Figure 5B According to embodiments of the present disclosure, the vibration layer 11 may include a plurality of first portions 11a separated from each other in a first direction X and a second direction Y, and a second portion 11b disposed between the plurality of first portions 11a.

[0116] The plurality of first portions 11a can be configured to be separated from each other in each of the first direction X and the second direction Y. For example, the plurality of first portions 11a may comprise hexahedral shapes having the same dimensions and may be arranged in a lattice shape. Each of the plurality of first portions 11a may comprise, as referenced above Figure 5A The materials of the first part 11a described are substantially the same, and therefore the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0117] The second portion 11b may be disposed between the plurality of first portions 11a in each of the first direction X and the second direction Y. The second portion 11b may be configured to fill the gap between two adjacent first portions 11a or surround each of the plurality of first portions 11a, and thus may be connected to or attached to adjacent first portions 11a. According to embodiments of this disclosure, the width of the second portion 11b disposed between two first portions 11a adjacent to each other along the first direction X may be the same as or different from the width of the first portions 11a, and the width of the second portion 11b disposed between two first portions 11a adjacent to each other along the second direction Y may be the same as or different from the width of the first portions 11a. The second portion 11b may include, as referenced above... Figure 5A The materials in the second part 11b described are substantially the same, and therefore the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0118] As described above, the vibrating layer 11 according to the first modified embodiment of this disclosure may include a 1-3 composite structure with piezoelectric properties having 1-3 vibration modes, and therefore may have a resonant frequency of 30 MHz or less, but the embodiments of this disclosure are not limited thereto. For example, the resonant frequency of the vibrating layer 11 may vary based on one or more of its shape, length, or thickness.

[0119] Reference Figure 5C According to another embodiment of the present disclosure, the vibration layer 11 may include a plurality of first portions 11a separated from each other in a first direction X and a second direction Y, and a second portion 11b surrounding each of the plurality of first portions 11a.

[0120] Each of the plurality of first portions 11a may include a planar structure having a circular shape. For example, each of the plurality of first portions 11a may have a circular plate shape, but embodiments of this disclosure are not limited thereto. For example, each of the plurality of first portions 11a may have a point shape including an elliptical shape, a polygonal shape, or a toroidal shape. Each of the plurality of first portions 11a may include the shape described above. Figure 5A The piezoelectric materials described in the first part 11a are substantially the same piezoelectric materials, and therefore the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0121] The second portion 11b may be disposed between the plurality of first portions 11a in each of the first direction X and the second direction Y. The second portion 11b may be configured to surround each of the plurality of first portions 11a, and therefore may be connected to or attached to the side surface of each of the plurality of first portions 11a. The plurality of first portions 11a and the second portion 11b may be disposed (or arranged) in parallel on the same plane (or the same layer). The second portion 11b may include components referenced above. Figure 5A The piezoelectric material described in the second part 11b is substantially the same piezoelectric material, and therefore, the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0122] Reference Figure 5D According to another embodiment of the present disclosure, the vibration layer 11 may include a plurality of first portions 11a separated from each other in a first direction X and a second direction Y, and a second portion 11b surrounding each of the plurality of first portions 11a.

[0123] Each of the plurality of first portions 11a may have a planar structure having a triangular shape. For example, each of the plurality of first portions 11a may have a triangular shape. The first portion 11a may include the shape described above. Figure 5A The piezoelectric materials described in the first part 11a are substantially the same piezoelectric materials, and therefore the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0124] According to embodiments of this disclosure, four adjacent first portions 11a of a plurality of first portions 11a may be arranged to be adjacent to each other to form a square shape (or a rectangular shape). The vertex of each of the four adjacent first portions 11a forming the square shape may be arranged to be adjacent to the middle portion (or center portion) of the square shape.

[0125] The second portion 11b may be disposed between the plurality of first portions 11a in each of the first direction X and the second direction Y. The second portion 11b may be configured to surround each of the plurality of first portions 11a, and therefore may be connected to or attached to the side surface of each of the plurality of first portions 11a. The plurality of first portions 11a and the second portion 11b may be disposed (or arranged) in parallel on the same plane (or the same layer). The second portion 11b may include components referenced above. Figure 5A The piezoelectric material described in the second part 11b is substantially the same piezoelectric material, and therefore, the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0126] According to another embodiment of this disclosure, 2N (where N is a natural number of 2 or greater) adjacent first portions 11a of a plurality of first portions 11a having a triangular shape can be arranged adjacent to each other to form a 2N-angle shape. For example, six adjacent first portions 11a of the plurality of first portions 11a can be arranged adjacent to each other to form a hexagonal shape (or a regular hexagon). The vertex of each of the six adjacent first portions 11a forming the hexagonal shape can be arranged adjacent to the middle portion (or center portion) of the hexagonal shape. A second portion 11b can be configured to surround each of the plurality of first portions 11a, and thus can be connected to or attached to the side surface of each of the plurality of first portions 11a.

[0127] Figure 6 An experimental example and based on Figure 2 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown. Figure 6 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0128] Sound output characteristics can be measured using a sound analysis device. This device can be an APX525 audio measurement system. The sound analysis device may include: a sound card that sends or receives sound from a control PC; an amplifier that amplifies the signal generated by the sound card and transmits the amplified signal to the vibration device; and a microphone that collects the sound generated by the vibration device from the display panel. For example, the microphone can be positioned at the center of the vibration device, and the distance between the display panel and the microphone can be approximately 30 cm. Sound can be measured with the microphone perpendicular to the vibration device. The sound collected by the microphone can be input to the control PC via the sound card, and the sound from the vibration device can be analyzed by checking the control program. For example, the frequency response characteristics in the frequency range of 200 Hz to 20 kHz can be measured using a pulse program. Measurements are performed by applying 1 / 3 octave band smoothing during a sine sweep from 20 Hz to 20 kHz.

[0129] exist Figure 6 In the middle, the thick solid line indicates when Figure 2 The sound output characteristics of the vibrating device shown are when it is driven with a constant voltage in the direction of polarization (or polarization) encountering a constant voltage (+). The dashed line indicates an experimental example and shows the sound output characteristics when the vibrating device is driven with a constant voltage in the case where multiple vibrating parts are arranged in parallel in the horizontal direction.

[0130] like Figure 6As shown, the average sound pressure level from 150 Hz to 8 kHz is approximately 80.65 dB in the thick solid line and approximately 76.83 dB in the dashed line. Furthermore, the average sound pressure level from 150 Hz to 20 kHz is approximately 83.55 dB in the thick solid line and approximately 80.56 dB in the dashed line.

[0131] Therefore, in vibration equipment, it can be seen that the sound pressure level characteristics are enhanced more when the equipment is configured to be stacked vertically compared to when it is arranged in parallel in the horizontal direction.

[0132] Figure 7 This is a cross-sectional view showing a vibration device 2 according to another embodiment of the present disclosure. Figure 8 It shows Figure 7 The rear surface of the vibration device shown, and Figure 9A and Figure 9B The displacement of a vibration device according to another embodiment of this disclosure is shown. The accompanying drawings illustrate the displacement of a device modified from the above references. Figure 1 and Figure 2 The embodiments implemented using the described vibration device are described below. Therefore, in the following description, other elements besides the vibration device and related components are referred to by the same reference numerals, and repeated descriptions of them are omitted or will be briefly given.

[0133] Reference Figure 7 and Figure 8 According to another embodiment of the present disclosure, the vibration device 2 may be referred to as a flexible vibration structure, flexible vibrator, flexible vibration generating device, flexible vibration generator, flexible sound generator, flexible sound device, flexible sound generating device, flexible sound generator, flexible actuator, flexible loudspeaker, flexible piezoelectric loudspeaker, membrane actuator, membrane piezoelectric composite actuator, membrane loudspeaker, membrane piezoelectric loudspeaker or membrane piezoelectric composite loudspeaker, but the terminology is not limited thereto.

[0134] According to another embodiment of this disclosure, the vibration device 2 may include a vibration member 20 and a vibration section 10. For example, the vibration member 20 may be a vibration object, a display panel, a vibration plate, or a front member, but the embodiments of this disclosure are not limited thereto.

[0135] According to another embodiment of the present disclosure, the vibration unit 10 of the vibration device 2 may include a plurality of vibration generating units 10a and 10b.

[0136] Multiple vibration generating units 10a and 10b may overlap or stack to shift (or drive or vibrate) in the same direction. For example, multiple vibration generating units 10a and 10b may have substantially the same size, but embodiments of this disclosure are not limited thereto.

[0137] For example, multiple vibration generating parts 10a and 10b may have substantially the same dimensions within the tolerance range of the manufacturing process, but embodiments of the present disclosure are not limited thereto. Therefore, multiple vibration generating parts 10a and 10b can maximize the amplitude displacement of the vibration part 10 and / or the amplitude displacement of the vibration member 20. One side (end, end, outer surface, or each corner) of each of the multiple vibration generating parts 10a and 10b can be aligned along a virtual extension line extending in the thickness direction Z, or can be disposed along the virtual extension line.

[0138] The vibration unit 10 according to embodiments of this disclosure may include two or more vibration generating units 10a and 10b, which are stacked to shift (or vibrate or drive) in the same direction. In the following description, an example of the vibration unit 10 including a first vibration generating unit 10a and a second vibration generating unit 10b will be described.

[0139] According to embodiments of this disclosure, the vibration unit 10 can be connected to or disposed on the vibration member 20 via the connecting member 60. For example, the first vibration generating unit 10a can be connected to or disposed on the vibration member 20 via the connecting member 60.

[0140] like Figure 8 As shown, the connecting member 60 can be disposed between at least a portion of the vibrating member 20 and the vibrating part 10. The connecting member 60 can be connected between at least a portion of the vibrating member 20 and the vibrating part 10. The connecting member 60 can be configured to extend in the vertical direction (or the Y-axis direction) and have a certain width in the horizontal direction (X-axis direction).

[0141] According to another embodiment of this disclosure, the connecting member 60 can be connected between the vibrating member 20 and the central portion of the vibrating part 10, excluding the edge portion (or peripheral portion) of the vibrating part 10. For example, the connecting member 60 can be connected between the vibrating member 20 and the central portion of the vibrating part 10 based on a partial attachment scheme. The central portion of the vibrating part 10 can be the portion that serves as the vibration center, and therefore, the vibration of the vibrating part 10 can be effectively transmitted to the vibrating member 20 through the connecting member 60. The edge portion (or peripheral portion) of the vibrating part 10 may not be connected to the connecting member 60 and / or the vibrating member 20, and may be disengaged from each of the connecting member 60 and the vibrating member 20, and therefore, when flexural vibration (or bending vibration) of the vibrating part 10 is performed, the vibration of the edge portion (or peripheral portion) of the vibrating part 10 can be prevented (or reduced) by the connecting member 60 and / or the vibrating member 20, and therefore, the vibration amplitude (or displacement amplitude) of the vibrating part 10 can be increased. Therefore, the vibration amplitude (or displacement amplitude) of the vibrating member 20 based on the vibration of the vibrating part 10 can be increased, and thus, the sound characteristics and sound pressure level characteristics of the bass and treble vocal bands generated based on the vibration of the vibrating member 20 can be further enhanced.

[0142] According to another embodiment of this disclosure, the first vibration generating unit 10a and the second vibration generating unit 10b may include a first cover member 41 and a second cover member 42. An intermediate member 50 may be provided between the first vibration generating unit 10a and the second vibration generating unit 10b.

[0143] The first cover member 41 may be disposed on the first vibration generating part 10a. The first cover member 41 may be disposed on the first surface of the first vibration generating part 10a. The second cover member 42 may be disposed on the second vibration generating part 10b. The second cover member 42 may be disposed on the second surface of the second vibration generating part 10b. The intermediate member 50 may be disposed between the second surface of the first vibration generating part 10a and the first surface of the second vibration generating part 10b.

[0144] The first vibration generating unit 10a may include a vibration layer 11, a first electrode layer 12, and a second electrode layer 13. The second vibration generating unit 10b may include a vibration layer 14, a first electrode layer 15, and a second electrode layer 16.

[0145] The vibration layer 11 of the first vibration generating section 10a and the vibration layer 14 of the second vibration generating section 10b may include a piezoelectric material (or an electroactive material) exhibiting a piezoelectric effect. For example, the piezoelectric material may have the following characteristics: when pressure or torsion is applied to a crystal structure by an external force, a potential difference is generated due to the polarization (or polling) caused by the change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on the voltage applied thereto. The vibration layer 11 may include a ceramic-based material for achieving relatively high vibration, or may include a piezoelectric ceramic having a perovskite-based crystal structure. For example, the vibration layer 11 may be referred to by terms such as vibration layer, piezoelectric layer, piezoelectric material layer, electroactive layer, vibration section, piezoelectric material section, electroactive section, piezoelectric structure, piezoelectric composite layer, piezoelectric composite material, or piezoelectric ceramic composite material, but the terminology is not limited thereto.

[0146] According to another embodiment of this disclosure, the vibrating layers 11 and 14 may include a plurality of first portions 11a and a plurality of second portions 11b. For example, the plurality of first portions 11a and the plurality of second portions 11b may be arranged alternately and repeatedly in a first direction X (or a second direction Y). For example, the first direction X may be the width direction of the vibrating layers 11 and 14, and the second direction Y may be the length direction of the vibrating layers 11 and 14 intersecting the first direction X, but the embodiments of this disclosure are not limited thereto. For example, the first direction X may be the length direction of the vibrating layers 11 and 14, and the second direction Y may be the width direction of the vibrating layers 11 and 14.

[0147] Each of the plurality of first portions 11a may include an inorganic material portion. The inorganic material portion may include a piezoelectric material, a composite piezoelectric material, or an electroactive material exhibiting a piezoelectric effect. For example, each of the plurality of first portions 11a may include materials similar to those described above. Figure 1 and Figure 2 The piezoelectric material of the described vibrating layer 11 is substantially the same piezoelectric material, and therefore, the same reference numerals refer to the same elements, and repeated descriptions of them are omitted.

[0148] According to another embodiment of this disclosure, each of the plurality of first portions 11a may be disposed between a plurality of second portions 11b. The plurality of second portions 11b may be disposed (or arranged) parallel to the plurality of first portions 11a therebetween. Each of the plurality of first portions 11a may have a first width W1 parallel to a first direction X (or a second direction Y) and may have a length parallel to the second direction Y (or the first direction X). Each of the plurality of second portions 11b may have a second width W2 parallel to the first direction X (or the second direction Y) and may have a length parallel to the second direction Y (or the first direction X).

[0149] According to another embodiment of this disclosure, the first width W1 may be the same as or different from the second width W2. For example, the first width W1 may be greater than the second width W2. The plurality of second portions 11b may have the same dimensions and, for example, may have width, area, or volume. For example, each of the plurality of second portions 11b may have the same dimensions (e.g., width, area, or volume) within process errors (or tolerances) that occur during manufacturing. For example, the first portion 11a and the second portion 11b may include lines or strips having the same or different dimensions.

[0150] Therefore, the vibrating layers 11 and 14 can have a 2-2 composite structure and thus can have a resonant frequency of 20 kHz or less, but embodiments of this disclosure are not limited thereto. For example, the resonant frequencies of the vibrating layers 11 and 14 can vary based on one or more of their shape, length, and thickness.

[0151] According to another embodiment of this disclosure, a plurality of first portions 11a and a plurality of second portions 11b may be arranged in parallel on the same plane (or the same layer). The plurality of first portions 11a and the plurality of second portions 11b may be arranged in parallel on the same plane (or the same layer) and may be connected or coupled to each other.

[0152] Each of the plurality of second portions 11b can be configured to fill the gap between two adjacent first portions 11a. Each of the plurality of second portions 11b can be attached to or attached to an adjacent first portion 11a. Each of the plurality of second portions 11b can be configured to fill the gap between two adjacent first portions 11a, and thus can be attached to or attached to an adjacent first portion 11a. Therefore, the vibrating layers 11 and 14 can be extended to a desired size or length based on the lateral coupling (or connection) between the first portions 11a and the second portions 11b.

[0153] According to another embodiment of this disclosure, the width W2 of each of the plurality of second portions 11b may gradually decrease in the direction from the center portion of the vibration layers 11 and 14 or the vibration device 2 to its two edge portions (or both ends or two peripheral portions).

[0154] According to another embodiment of this disclosure, when the vibrating layers 11 and 14 or the vibrating device 2 vibrates in the vertical direction Z (or the thickness direction), the second portion 11b with the largest width W2 among the plurality of second portions 11b can be disposed at the portion with the greatest stress concentration. When the vibrating layers 11 and 14 or the vibrating device 2 vibrates in the vertical direction Z, the second portion 11b with the smallest width W2 among the plurality of second portions 11b can be disposed at the portion generating the relatively least stress. For example, the second portion 11b with the largest width W2 among the plurality of second portions 11b can be disposed at the central portion of the vibrating layers 11 and 14, and the second portion 11b with the smallest width W2 among the plurality of second portions 11b can be disposed at the two edge portions (or two peripheral portions) of the vibrating layers 11 and 14. Therefore, when the vibrating layers 11 and 14 or the vibrating device 2 vibrates in the vertical direction Z, the overlap of resonant frequencies or interference of sound waves occurring at the portion with the greatest stress concentration can be minimized, and thus the drop in sound pressure level occurring in the low-high frequency band can be reduced, and the flatness of the sound characteristics in the low-high frequency band can be improved.

[0155] According to another embodiment of this disclosure, the plurality of first portions 11a may have different dimensions (or widths). For example, the dimension (or width) of each of the plurality of first portions 11a may gradually decrease or increase in the direction from the center portion of the vibrating layers 11 and 14 or the vibrating device 2 to its two edge portions (or both ends or two peripheral portions). In this case, the sound pressure level characteristics of the sound from the vibrating layers 11 and 14 can be enhanced by various unique vibration frequencies based on the vibration of the plurality of first portions 11a with different dimensions, and the sound reproduction band can be extended.

[0156] Each of the plurality of second portions 11b can be disposed between the plurality of first portions 11a. Therefore, in the vibrational layers 11 and 14 or the vibrational device 2, the vibrational energy based on the links in a unit lattice of the first portions 11a can be increased by the second portions 11b, and thus, the vibrational characteristics can be increased, and piezoelectric properties and flexibility can be ensured. For example, the second portions 11b may comprise one of epoxy-based polymers, acrylic polymers, and silicone polymers, but embodiments of this disclosure are not limited thereto.

[0157] Each of the plurality of second portions 11b according to another embodiment of the present disclosure may be configured with an organic material portion. For example, the organic material portion may be disposed between two adjacent inorganic material portions and thus may absorb impacts applied to the inorganic material portions (or the first portions) and may release stress concentrated on the inorganic material portions, thereby enhancing the durability of the vibration layers 11 and 14 or the vibration device 2 and achieving the flexibility of the vibration layers 11 and 14 or the vibration device 2.

[0158] According to another embodiment of this disclosure, the second portion 11b may have a lower modulus and viscoelasticity than the first portion 11a, and therefore, the second portion 11b may enhance the reliability of the first portion 11a, which is susceptible to impact due to the brittle nature of the first portion 11a. For example, the second portion 11b may comprise a material having a loss coefficient of about 0.01 to about 1 and a modulus of about 0.1 GPa to about 10 GPa.

[0159] The organic material portion included in the second part 11b may include organic materials, organic polymers, organic piezoelectric materials, or organic non-piezoelectric materials that have flexible properties compared to the inorganic material portion of the first part 11a. For example, the second part 11b may be referred to as an adhesive portion, a flexible portion, a bending portion, a damping portion, or an extended portion, etc., but embodiments of this disclosure are not limited thereto.

[0160] Multiple first portions 11a and multiple second portions 11b can be disposed (or connected) on the same plane, and therefore, the vibrating layers 11 and 14 according to another embodiment of this embodiment can have the form of a single thin film. For example, the vibrating layers 11 and 14 can have a structure in which multiple first portions 11a are connected to one side thereof. For example, the vibrating layers 11 and 14 can have a structure in which multiple first portions 11a are connected in all the vibrating layers 11 and 14. For example, the vibrating layers 11 and 14 can vibrate in the vertical direction by means of the first portions 11a having vibrational characteristics, and can be bent into a curved shape by means of the flexible second portions 11b.

[0161] In another embodiment of the vibration layers 11 and 14 according to this embodiment, the dimensions of the first portion 11a and the second portion 11b can be set based on the piezoelectric properties and flexibility required by the vibration layers 11 and 14 or the vibration device 2. For example, when the vibration layers 11 and 14 require piezoelectric properties rather than flexibility, the dimension of the first portion 11a can be set to be larger than the dimension of the second portion 11b. In another embodiment of this disclosure, when the vibration layers 11 and 14 require flexibility rather than piezoelectric properties, the dimension of the second portion 11b can be set to be larger than the dimension of the first portion 11a. Therefore, the dimensions of the vibration layers 11 and 14 can be adjusted based on the desired properties, and thus, the vibration layers 11 and 14 can be easily designed.

[0162] The vibration layer 11 of the first vibration generating unit 10a and the vibration layer 14 of the second vibration generating unit 10b can be polarized (or polarized) in different or opposite directions. For example, the vibration layer 11 of the first vibration generating unit 10a can be configured such that the polarization direction (or polarization direction) is downward relative to the thickness direction Z of the vibration member 20. The vibration layer 14 of the second vibration generating unit 10b can be configured such that the polarization direction (or polarization direction) is upward relative to the thickness direction Z of the vibration member 20. The first vibration generating unit 10a and the second vibration generating unit 10b can be stacked together with the intermediate member 50 therebetween, and can have different or opposite polarization directions (or different or opposite polarization directions), and therefore, vibrations in different horizontal directions can be used to generate vibrations. 31 The vibrating member 20 is vibrated. For example, an intermediate member 50 may be disposed between the second surface of the first vibration generating part 10a and the first surface of the second vibration generating part 10b. For example, the intermediate member 50 may guide the vibration displacement of each of the first vibration generating part 10a and the second vibration generating part 10b, which are displaced in opposite directions between the first vibration generating part 10a and the second vibration generating part 10b. For example, the intermediate member 50 may comprise a rigid material to guide vibration displacement in different or opposite directions. For example, the intermediate member 50 may comprise an epoxy resin material or a metal material with a modulus (or Young's modulus) of several or more GPa (gigapascals).

[0163] For example, intermediate component 50 may include metallic materials such as aluminum (Al), copper (Cu), stainless steel (SUS), iridium (Ir), tungsten (W), molybdenum (Mo), aluminum nitride (AlN), or tantalum oxide (TaOx), or may include materials comprising alloys thereof, but embodiments of this disclosure are not limited thereto. Alternatively, intermediate component 50 may include one or more of epoxy-based polymers, acrylic polymers, and silicone polymers, but embodiments of this disclosure are not limited thereto.

[0164] For example, the vibration layer 11 of the first vibration generating unit 10a and the vibration layer 14 of the second vibration generating unit 10b can be displaced (or vibrated or driven) together with the intermediate member 50 to prevent vertical vibration d. 33 However, due to the horizontal vibration d 31 Conversely overlapping, the vibrating member 20 can be based on horizontal vibration d. 31Vibration. Vibration layers 11 and 14 can contract and expand in opposite directions in the horizontal direction to increase the displacement of the vibrating component (or vibrating plate or vibrating object), thereby further enhancing the vibration characteristics.

[0165] The first electrode layer 12 of the first vibration generating section 10a and the first electrode layer 15 of the second vibration generating section 10b can be disposed on the first surfaces (or lower surfaces) of the vibration layers 11 and 14. The first electrode layers 12 and 15 can be commonly disposed on the first surfaces of each of the plurality of first portions 11a and each of the plurality of second portions 11b, or coupled to the first surfaces of each of the plurality of first portions 11a and each of the plurality of second portions 11b, and can be electrically connected to the first surfaces of each of the plurality of first portions 11a. For example, the first electrode layers 12 and 15 can be in the form of a single electrode (or a common electrode) disposed on the entire first surface of the vibration layers 11 and 14. For example, the first electrode layers 12 and 15 can have substantially the same shape as the vibration layers 11 and 14, but embodiments of this disclosure are not limited thereto.

[0166] The second electrode layer 13 of the first vibration generating section 10a and the second electrode layer 16 of the second vibration generating section 10b can be disposed on the second surfaces of the vibration layers 11 and 14 that are different from (or opposite to) the first surfaces. The second electrode layers 13 and 16 can be commonly disposed on the second surfaces of each of the plurality of first sections 11a and each of the plurality of second sections 11b, or coupled to and electrically connected to the second surfaces of each of the plurality of first sections 11a and each of the plurality of second sections 11b. For example, the second electrode layers 13 and 16 can be in the form of a single electrode (or a common electrode) disposed on the entire second surface of the vibration layers 11 and 14. For example, the second electrode layers 13 and 16 can have substantially the same shape as the vibration layers 11 and 14, but embodiments of this disclosure are not limited thereto.

[0167] The first electrode layers 12 and 15 and the second electrode layers 13 and 16 according to the embodiments may include the above-mentioned references. Figure 1 and Figure 2 The materials of each of the first electrode layers 12 and 15 and the second electrode layers 13 and 16 are the same, and therefore repeated descriptions of them are omitted.

[0168] In the first vibration generating unit 10a, a first cover member 41 may be disposed on the first electrode layer 12. The first cover member 41 may protect the first electrode layer 12. For example, the first cover member 41 may include plastic material, fiber material or wood material, but the embodiments of this disclosure are not limited thereto.

[0169] In the second vibration generating section 10b, a second cover member 42 may be disposed on the second electrode layer 16. The second cover member 42 may protect the second electrode layer 16. For example, the second cover member 42 may include plastic material, fiber material or wood material, but the embodiments of this disclosure are not limited thereto.

[0170] The first cover member 41 and the second cover member 42, respectively included in the first vibration generating section 10a and the second vibration generating section 10b, may be made of the same material or different materials. Each of the first cover member 41 and the second cover member 42 may be a polyimide film or a polyethylene terephthalate film, but the embodiments of this disclosure are not limited thereto.

[0171] Each of the first vibration generating section 10a and the second vibration generating section 10b may include at least one first adhesive layer 31, a second adhesive layer 32, a third adhesive layer 33, and a fourth adhesive layer 34.

[0172] In the first vibration generating section 10a, the first adhesive layer 31 may be disposed between the first electrode layer 12 and the first cover member 41. For example, the first adhesive layer 31 may be disposed between the first cover member 41 and the first electrode layer 12 on the vibration layer 11.

[0173] In the first vibration generating section 10a, a second adhesive layer 32 may be disposed between the vibration layer 11 and the intermediate member 50. For example, the second adhesive layer 32 may be disposed between the intermediate member 50 and the second electrode layer 13 on the vibration layer 11. The intermediate member 50 may be disposed on the first vibration generating section 10a via the second adhesive layer 32. For example, the intermediate member 50 may be coupled to or connected to the second surface (or the second electrode layer 13) of the first vibration generating section 10a via a lamination process using the second adhesive layer 32.

[0174] In the first vibration generating section 10a, the first adhesive layer 31 and the second adhesive layer 32 can be connected or coupled to each other between the first cover member 41 and the intermediate member 50. For example, in the first vibration generating section 10a, the first adhesive layer 31 and the second adhesive layer 32 can be connected or coupled to each other at the edge portion (or peripheral portion) between the first cover member 41 and the intermediate member 50. Therefore, in the first vibration generating section 10a, the vibration layer 11 can be surrounded by the first adhesive layer 31 and the second adhesive layer 32. For example, the first adhesive layer 31 and the second adhesive layer 32 can completely surround the entire first vibration generating section 10a.

[0175] In the second vibration generating section 10b, a third adhesive layer 33 may be disposed between the vibration layer 14 and the intermediate member 50. For example, the third adhesive layer 33 may be disposed between the intermediate member 50 and the first electrode layer 15 on the vibration layer 14. The intermediate member 50 may be disposed on the first surface (or the first electrode layer 15) of the second vibration generating section 10b via the third adhesive layer 33. For example, the intermediate member 50 may be coupled or connected to the first surface (or the first electrode layer 15) of the second vibration generating section 10b via a lamination process using the third adhesive layer 33.

[0176] In the second vibration generating section 10b, a fourth adhesive layer 34 may be disposed between the vibration layer 14 and the second cover member 42. For example, the fourth adhesive layer 34 may be disposed between the second cover member 42 and the second electrode layer 16 on the vibration layer 14. The second cover member 42 may be disposed on the second vibration generating section 10b via the fourth adhesive layer 34. For example, the second cover member 42 may be coupled to or connected to the second surface (or the second electrode layer 16) of the second vibration generating section 10b via a lamination process using the fourth adhesive layer 34.

[0177] In the second vibration generating section 10b, the third adhesive layer 33 and the fourth adhesive layer 34 can be connected or coupled to each other between the second cover member 42 and the intermediate member 50. For example, in the second vibration generating section 10b, the third adhesive layer 33 and the fourth adhesive layer 34 can be connected or coupled to each other at the edge portion (or peripheral portion) between the second cover member 42 and the intermediate member 50. Therefore, in the second vibration generating section 10b, the vibration layer 14 can be surrounded by the third adhesive layer 33 and the fourth adhesive layer 34. For example, the third adhesive layer 33 and the fourth adhesive layer 34 can completely surround the entire second vibration generating section 10b.

[0178] In each of the first vibration generating section 10a and the second vibration generating section 10b, each of the first adhesive layer 31, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may include an electrically insulating material. For example, each of the first adhesive layer 31, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may include an electrically insulating material that has adhesive properties and is capable of compression and decompression. For example, one or more of the first adhesive layer 31, the second adhesive layer 32, the third adhesive layer 33, and the fourth adhesive layer 34 may include epoxy resin, acrylic resin, silicone resin, or polyurethane resin, but embodiments of this disclosure are not limited thereto.

[0179] Reference Figure 9A and Figure 9BAccording to another embodiment of this disclosure, the vibration layer 11 of the first vibration generating unit 10a and the vibration layer 14 of the second vibration generating unit 10b can be polarized (or polarized) in different or opposite directions (or different or opposite polarization directions). For example, the vibration layer 11 of the first vibration generating unit 10a can be configured such that the polarization direction (or polarization direction) is downward relative to the thickness direction Z of the vibration member 20. The vibration layer 14 of the second vibration generating unit 10b can be configured such that the polarization direction (or polarization direction) is upward relative to the thickness direction Z of the vibration member 20.

[0180] In addition, such as Figure 9A As shown, a reverse voltage (-) (or negative voltage) can be applied to the first electrode layer 12 of the first vibration generating section 10a and the first electrode layer 15 of the second vibration generating section 10b, and a constant voltage (+) (or positive voltage) can be applied to the second electrode layer 13 of the first vibration generating section 10a and the second electrode layer 16 of the second vibration generating section 10b. The vibration layer 11 of the first vibration generating section 10a can be configured such that the polarization direction (or polarizing direction) faces downward relative to the thickness direction Z of the vibration member 20. Alternatively, the vibration layer 14 of the second vibration generating section 10b can be configured such that the polarization direction (or polarizing direction) faces upward relative to the thickness direction Z of the vibration member 20. Therefore, in the first vibration generating section 10a, the polarization direction (or polarizing direction) can encounter the reverse voltage (-), and thus, the first vibration generating section 10a can deform to contract from the outer side of the plane. On the other hand, in the second vibration generating section 10b, the polarization direction (or polarization direction) can meet the constant voltage (+), and therefore, the second vibration generating section 10b can be deformed to extend to the outer side of the plane.

[0181] The first vibration generating unit 10a and the second vibration generating unit 10b can be in the horizontal direction d 31 The upper part is driven in the opposite direction, and therefore, the vibration of the vibrating member 20 can be applied primarily to the region based on its vibration direction.

[0182] like Figure 9BAs shown, a constant voltage (+) (or positive voltage) can be applied to the first electrode layer 12 of the first vibration generating section 10a and the first electrode layer 15 of the second vibration generating section 10b, and a reverse voltage (-) (or negative voltage) can be applied to the second electrode layer 13 of the first vibration generating section 10a and the second electrode layer 16 of the second vibration generating section 10b. The vibration layer 11 of the first vibration generating section 10a can be configured such that the polarization direction (or polarizing direction) faces downward relative to the thickness direction Z of the vibration member 20. Alternatively, the vibration layer 14 of the second vibration generating section 10b can be configured such that the polarization direction (or polarizing direction) faces upward relative to the thickness direction Z of the vibration member 20. Therefore, in the first vibration generating section 10a, the polarization direction (or polarizing direction) can meet the constant voltage (+), and thus, the first vibration generating section 10a can deform to extend to the outer side of the plane. On the other hand, in the second vibration generating section 10b, the polarization direction of travel (or the polarization direction of travel) can meet the reverse voltage (-), and therefore, the second vibration generating section 10b can deform to contract from the outer side of the plane.

[0183] Figure 10 This is a cross-sectional view showing a vibration device according to another embodiment of the present disclosure. Figure 11 Show Figure 10 The rear surface of the vibration device shown, and Figure 12A and Figure 12B The displacement of a vibration device according to another embodiment of this disclosure is shown. The accompanying drawings illustrate the displacement of a device modified from the above references. Figure 7 and Figure 8 The embodiments implemented using the described vibration device are described below. Therefore, in the following description, other elements besides the vibration device and related components are referred to by the same reference numerals, and repeated descriptions of them are omitted or will be briefly given.

[0184] According to another embodiment of this disclosure, the vibration device 3 may include a vibration member 20 and a vibration section 10. For example, the vibration member 20 may be a vibration object, a display panel, a vibration plate, or a front member, but the embodiments of this disclosure are not limited thereto.

[0185] According to another embodiment of the present disclosure, the vibration unit 10 of the vibration device 3 may include a plurality of vibration generating units 10a and 10b.

[0186] Multiple vibration generating units 10a and 10b may overlap or stack to shift (or drive or vibrate) in the same direction. For example, multiple vibration generating units 10a and 10b may have substantially the same size, but embodiments of this disclosure are not limited thereto.

[0187] According to embodiments of this disclosure, the vibration unit 10 can be connected to or disposed on the vibration member 20 via the first connecting member 61, the second connecting member 62, and the third connecting member 63. For example, the first vibration generating unit 10a can be connected to or disposed on the vibration member 20 via the first connecting member 61, the second connecting member 62, and the third connecting member 63.

[0188] like Figure 11 As shown, the first connecting member 61, the second connecting member 62, and the third connecting member 63 can be disposed between the vibrating member 20 and at least a portion of the vibrating part 10. The first connecting member 61, the second connecting member 62, and the third connecting member 63 can be connected between the vibrating member 20 and at least a portion of the vibrating part 10.

[0189] According to another embodiment of this disclosure, the first connecting member 61 may be configured to extend along the first center line CL1 of the vibrating part 10 and have a certain width in the horizontal direction (X-axis direction).

[0190] According to another embodiment of this disclosure, the second connecting member 62 may be disposed between the right end of the vibration part 10 and the first connecting member 61 along the horizontal direction (X-axis direction) of the vibration part 10. The central portion (or middle portion) CP of the second connecting member 62 may be disposed at the intersection of the second center line CL2 in the vertical direction (Y-axis direction) of the vibration part 10 and the third center line CL3 between the first connecting member 61 and the right end of the vibration part 10.

[0191] According to another embodiment of this disclosure, the third connecting member 63 may be disposed between the left end of the vibrating part 10 and the first connecting member 61 along the horizontal direction (X-axis direction) of the vibrating part 10. The central portion (or middle portion) CP of the third connecting member 63 may be disposed at the intersection of the second center line CL2 in the vertical direction (Y-axis direction) of the vibrating part 10 and the fourth center line CL4 between the first connecting member 61 and the left end of the vibrating part 10.

[0192] According to another embodiment of this disclosure, the second connecting member 62 and the third connecting member 63 may have the same dimensions, and may have, for example, width, area or volume.

[0193] According to another embodiment of this disclosure, the first connecting member 61, the second connecting member 62, and the third connecting member 63 may include different materials and / or substances.

[0194] For example, the first connecting member 61 may include a material comprising an adhesive layer with good adhesion or bonding strength. The first connecting member 61 may include a material with a high modulus having a strength of several or more MPa. For example, the first connecting member 61 may include double-sided tape or adhesive, but is not limited thereto. For example, the adhesive layer of the first connecting member 61 may include epoxy resin, acrylic, silicone resin, or polyurethane, but is not limited thereto. For example, the adhesive layer of the first connecting member 61 may include acrylic materials with relatively good adhesion and high hardness, such as acrylic and polyurethane. Therefore, the vibration of the vibrating part 10 can be effectively transmitted to the vibrating member 20.

[0195] For example, the second connecting member 62 and the third connecting member 63 may include materials comprising a highly elastic adhesive layer. The second connecting member 62 and the third connecting member 63 may include materials with a low modulus having a strength of several MPa or less. For example, the second connecting member 62 and the third connecting member 63 may include foam pads, single-sided tape, double-sided tape, single-sided foam pads, double-sided foam pads, single-sided foam tape, double-sided foam tape, or adhesives, but are not limited thereto. For example, the second connecting member 62 and the third connecting member 63 may include polyurethane foam or polyurethane foam with low hardness and good elasticity. Therefore, the edge portion (or peripheral portion) of the vibrating part 10 can be elastically supported by the second connecting member 62 and the third connecting member 63, and thus, when flexural vibration (or bending vibration) of the vibrating part 10 is performed, the vibration of the edge portion (or peripheral portion) of the vibrating part 10 can be prevented (or reduced) by the second connecting member 62 and the third connecting member 63 and / or the vibrating member 20, and thus, the vibration amplitude (or displacement amplitude) of the vibrating part 10 can be increased. Therefore, the vibration amplitude (or displacement amplitude) of the vibrating member 20 based on the vibration of the vibrating part 10 can be increased, and thus, the sound characteristics and sound pressure level characteristics of the bass and treble vocal bands generated based on the vibration of the vibrating member 20 can be further enhanced.

[0196] Reference Figure 12A and Figure 12BThe vibration layer 11 of the first vibration generating unit 10a and the vibration layer 14 of the second vibration generating unit 10b can be polarized (or polarized) in different or opposite directions. For example, the vibration layer 11 of the first vibration generating unit 10a can be configured such that the polarization direction (or polarization direction) is downward relative to the thickness direction Z of the vibration member 20. The vibration layer 14 of the second vibration generating unit 10b can be configured such that the polarization direction (or polarization direction) is upward relative to the thickness direction Z of the vibration member 20.

[0197] According to another embodiment of the present disclosure, the vibration unit 10 can be connected or coupled to the vibration member 20 via the first connecting member 61, the second connecting member 62 and the third connecting member 63.

[0198] Therefore, as Figure 12A and 12B As shown, when the first vibration generating part 10a and the second vibration generating part 10b vibrate in opposite directions, their center can be fixed by the first connecting member 61, and their edges (or periphery) can be elastically supported by the second connecting member 62 and the third connecting member 63. Therefore, the vibration amplitude (or displacement amplitude) of the vibration member 20 based on the vibration of the vibration part 10 can be increased, and therefore, the sound characteristics and sound pressure level characteristics of the bass and treble vocal bands generated based on the vibration of the vibration member 20 can be further enhanced.

[0199] Figure 13 This is a cross-sectional view showing a vibration device 4 according to another embodiment of the present disclosure, and Figure 14 It shows Figure 13 The rear surface of the vibrating device is shown. The attached figure illustrates a modification of the above reference. Figure 10 and Figure 11 The embodiments implemented using the described vibration device are described below. Therefore, in the following description, other elements besides the vibration device and related components are referred to by the same reference numerals, and repeated descriptions of them are omitted or will be briefly given.

[0200] According to another embodiment of the present disclosure, the vibration device 4 may include a first connecting member 61, a second connecting member 62 and a third connecting member 63 disposed between the vibration part 10 and the vibration member 20.

[0201] like Figure 14As shown, the first connecting member 61, the second connecting member 62, and the third connecting member 63 can be disposed between the vibrating member 20 and at least a portion of the vibrating part 10. The first connecting member 61, the second connecting member 62, and the third connecting member 63 can be connected between the vibrating member 20 and at least a portion of the vibrating part 10.

[0202] According to another embodiment of this disclosure, the first connecting member 61 may be configured to extend along the first center line CL1 of the vibrating part 10 and have a certain width in the horizontal direction (X-axis direction).

[0203] According to another embodiment of this disclosure, the second connecting member 62 can be disposed between the right end of the vibrating part 10 and the first connecting member 61 along the horizontal direction (X-axis direction) of the vibrating part 10. The central portion (or middle portion) CP of the second connecting member 62 can be disposed on the second center line CL2 in the vertical direction (Y-axis direction) of the vibrating part 10. The central portion CP of the second connecting member 62 can be disposed between the third center line CL3 and the right end of the vibrating part 10.

[0204] According to another embodiment of this disclosure, the third connecting member 63 may be disposed between the left end of the vibrating part 10 and the first connecting member 61 along the horizontal direction (X-axis direction) of the vibrating part 10. The central portion (or middle portion) CP of the third connecting member 63 may be disposed on the second center line CL2 in the vertical direction (Y-axis direction) of the vibrating part 10. The central portion CP of the third connecting member 63 may be disposed between the fourth center line CL4 and the left end of the vibrating part 10.

[0205] Figure 15 This is a cross-sectional view showing a vibration device according to another embodiment of the present disclosure, and Figure 16 It shows Figure 15 The rear surface of the vibrating device is shown. The attached figure illustrates a modification of the above reference. Figure 10 and Figure 11 The embodiments implemented using the described vibration device are described below. Therefore, in the following description, other elements besides the vibration device and related components are referred to by the same reference numerals, and repeated descriptions of them are omitted or will be briefly given.

[0206] According to another embodiment of the present disclosure, the vibration device 5 may include a first connecting member 61, a second connecting member 62 and a third connecting member 63 disposed between the vibration part 10 and the vibration member 20.

[0207] like Figure 16As shown, the first connecting member 61, the second connecting member 62, and the third connecting member 63 can be disposed between the vibrating member 20 and at least a portion of the vibrating part 10. The first connecting member 61, the second connecting member 62, and the third connecting member 63 can be connected between the vibrating member 20 and at least a portion of the vibrating part 10.

[0208] According to another embodiment of this disclosure, the first connecting member 61 may be configured to extend along the first center line CL1 of the vibrating part 10 and have a certain width in the horizontal direction (X-axis direction).

[0209] According to another embodiment of this disclosure, the second connecting member 62 can be disposed between the right end of the vibrating part 10 and the first connecting member 61 along the horizontal direction (X-axis direction) of the vibrating part 10. The central portion (or middle portion) CP of the second connecting member 62 can be disposed on the second center line CL2 in the vertical direction (Y-axis direction) of the vibrating part 10. The central portion CP of the second connecting member 62 can be disposed between the third center line CL3 and the first connecting member 61.

[0210] According to another embodiment of this disclosure, the third connecting member 63 may be disposed between the left end of the vibrating part 10 and the first connecting member 61 along the horizontal direction (X-axis direction) of the vibrating part 10. The central portion (or middle portion) CP of the third connecting member 63 may be disposed on the second center line CL2 in the vertical direction (Y-axis direction) of the vibrating part 10. The central portion CP of the third connecting member 63 may be disposed between the fourth center line CL4 and the first connecting member 61.

[0211] Figure 17 An apparatus according to an embodiment of the present disclosure is shown, and Figure 18 It is along Figure 17 The cross-sectional view taken by line B-B' is shown.

[0212] Reference Figure 17 and Figure 18 The device according to embodiments of the present disclosure may include a passive vibration member 100 and one or more vibration generating devices 200.

[0213] The “device” according to embodiments of this disclosure may be a display device, a sound device, a sound generating device, a sound bar, an analog sign or a digital sign, but embodiments of this disclosure are not limited thereto.

[0214] Display devices may include: a display panel comprising a plurality of pixels that realize a black-and-white image or a 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 embodiments of this disclosure are not limited thereto. For example, in an organic light-emitting display panel, pixels may include organic light-emitting devices such as organic light-emitting layers, and may be sub-pixels that realize one of the many colors constituting a color image. Therefore, an "apparatus" according to embodiments of this disclosure may include unit electronic equipment or unit devices (or unit equipment) as a complete product (or final product) including a display panel such as a liquid crystal display panel or an organic light-emitting display panel, such as mobile electronic devices such as smartphones or tablets, and equipment including laptops, televisions (TVs), computer monitors, automotive equipment, or vehicles.

[0215] The simulated signage can be an advertising sign, poster, or directional sign. Simulated signage can include content such as sentences, pictures, and symbols. The content can be set to be visible from the passive vibration member 100 of the device. The content can be directly attached to the passive vibration member 100, or a medium such as paper can be attached to the passive vibration member 100 by printing the content.

[0216] The passive vibration member 100 can vibrate based on the drive (or vibration) of one or more vibration generating devices 200. For example, the passive vibration member 100 can generate one or more of vibrations and sounds based on the drive of one or more vibration generating devices 200.

[0217] The passive vibration member 100 according to embodiments of this disclosure can be a display panel including display units (or screens) comprising a plurality of pixels for displaying black-and-white or color images. Therefore, the passive vibration member 100 can generate one or more types of vibration and sound based on the driving of one or more vibration generating devices 200. For example, the passive vibration member 100 can vibrate based on the driving of the vibration generating devices 200 while displaying an image on the display unit, and thus can generate or output sound synchronized with the image in the display unit. For example, the passive vibration member 100 can be a vibrating object, a display member, a display panel, a sign panel, a passive vibration plate, a front cover, a front member, a vibration panel, a sound panel, a passive vibration panel, a sound output board, a sound vibration plate, or an image screen, but embodiments of this disclosure are not limited thereto.

[0218] The passive vibration member 100 according to embodiments of this disclosure may be a diaphragm comprising a metallic material having material properties suitable for vibration by one or more vibration generating devices 200 to output sound, or comprising a non-metallic material (or a composite non-metallic material). For example, the passive vibration member 100 may be a diaphragm comprising one or more materials including metal, plastic, paper, wood, rubber, fiber, cloth, leather, glass, and mirror. For example, the paper may be cone paper for a loudspeaker.

[0219] The passive vibration member 100 according to embodiments of this disclosure may include a display panel, or may include a non-display panel, wherein the display panel includes pixels for displaying images. For example, the passive vibration member 100 may include one or more of the following: a display panel including pixels for displaying images; a screen panel on which images are projected from a display device; a lighting panel; a sign panel; interior materials of a vehicle; exterior materials of a vehicle; windows of a vehicle; interior materials of vehicle seats; ceiling materials of a building; interior materials of a building; windows of a building; interior materials of an aircraft; windows of an aircraft; and mirrors, but embodiments of this disclosure are not limited thereto. For example, a non-display panel may include a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), or an inorganic light-emitting lighting panel (or device), but embodiments of this disclosure are not limited thereto.

[0220] One or more vibration generating devices 200 can be configured to vibrate the passive vibrating member 100. One or more vibration generating devices 200 can be configured to be connected to the rear surface 100a of the passive vibrating member 100 via a connecting member 150. Therefore, one or more vibration generating devices 200 can cause the passive vibrating member 100 to vibrate, and thus one or more of vibration and sound can be generated or output based on the vibration of the passive vibrating member 100.

[0221] One or more vibration generating devices 200 may include the above references Figures 1 to 16 The vibrating part 10 in one or more of the described vibration devices 1 to 5. Therefore, for Figures 1 to 16 The description of the vibrating part 10 in the vibration devices 1 to 5 shown may include the description of the vibration unit 10 in the vibrating devices 1 to 5 shown in the description of the vibration unit 10. Figure 17 and Figure 18 In the description of the vibration generating device 200 shown, and therefore, the same reference numerals refer to the same elements, and repeated descriptions thereof are omitted.

[0222] A connecting member 150 may be disposed between the passive vibration member 100 and at least a portion of the vibration generating device 200. The connecting member 150 may be connected between the passive vibration member 100 and at least a portion of the vibration generating device 200. According to embodiments of this disclosure, the connecting member 150 may be connected between the passive vibration member 100 and the central portion of the vibration generating device 200, excluding the edge (or peripheral) portions of the vibration generating device 200. For example, the connecting member 150 may be connected between the passive vibration member 100 and the central portion of the vibration generating device 200 based on a partial attachment scheme. The central portion of the vibration generating device 200 may be the portion serving as the vibration center, and therefore, vibrations from the vibration generating device 200 can be effectively transmitted to the passive vibration member 100 through the connecting member 150. The connecting member 150 may be connected to or attached to the entire front surface of each of one or more vibration generating devices 200 and the rear surface 100a of the passive vibration member 100 based on a full-surface attachment scheme, but embodiments of this disclosure are not limited thereto.

[0223] The connecting member 150 according to embodiments of this disclosure may include a material comprising an adhesive layer having good adhesion or bonding force with respect to each of the one or more vibration generating devices 200 and the passive vibration member 100 or the rear surface of the display panel. For example, the connecting member 150 may include a foam pad, double-sided tape, or adhesive, but is not limited thereto. For example, the adhesive layer of the connecting member 150 may include epoxy resin, acrylic, silicone resin, or polyurethane, but is not limited thereto. For example, the adhesive layer of the connecting member 150 may include acrylic and polyurethane materials having relatively good adhesion and high hardness. Therefore, vibrations from each of the one or more vibration generating devices 200 can be well transmitted to the passive vibration member 100.

[0224] The device according to embodiments of this disclosure may include a support member 300 and a coupling member 350.

[0225] A 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 to cover the vibration generating device 200. The support member 300 may be disposed on the rear surface 100a of the passive vibration member 100 to cover the entire rear surface 100a of both the vibration generating device 200 and the passive vibration member 100. For example, the support member 300 may have the same dimensions as the passive vibration member 100. For example, the support member 300 may cover the entire rear surface of the passive vibration member 100, wherein the vibration generating device 200 and a gap space GS are present between the support member 300 and the passive vibration member 100. The gap space GS may be provided by a coupling member 350 disposed between the passive vibration member 100 and the support member 300, which face each other. The gap space GS may be referred to as an air gap, a containment space, a vibration space, or a speaker enclosure, but embodiments of this disclosure are not limited thereto.

[0226] The support member 300 may include one of glass, metal, and plastic materials. The support member 300 may include a stacked structure in which one or more of the glass, metal, and plastic materials are stacked.

[0227] Each of the passive vibration member 100 and the support member 300 may have a square or rectangular shape, but is not limited thereto, and may have a polygonal shape, a non-polygonal shape, a circular shape, or an elliptical shape. For example, when the device according to an embodiment of the present disclosure is applied to a sound device or a soundbar, each of the passive vibration member 100 and the support member 300 may have a rectangular shape in which the length of the longer side is two or more times the length of the shorter side, but the embodiments of the present disclosure are not limited thereto.

[0228] The coupling member 350 can be configured to connect the rear edge portion (or rear peripheral portion) of the passive vibration member 100 and the front edge portion (or front peripheral portion) of the support member 300, and thus provide a gap space GS between the passive vibration member 100 and the support member 300 facing each other.

[0229] The coupling member 350 according to embodiments of this disclosure may include an elastic material having adhesive properties and being capable of compression and decompression. For example, the coupling member 350 may include double-sided tape, single-sided tape, or double-sided adhesive foam pads, but is not limited thereto, and may include elastic pads such as silicone pads or rubber pads, having adhesive properties and being capable of compression and decompression. For example, the coupling member 350 may be formed of an elastomer.

[0230] Alternatively, the support member 300 may further include a sidewall portion supporting the rear edge (or rear peripheral portion) of the passive vibration member 100. The sidewall portion of the support member 300 may protrude from the front edge (or front peripheral portion) of the support member 300 toward the rear edge (or rear peripheral portion) of the passive vibration member 100, or may be bent from the front edge (or front peripheral portion) of the support member 300 toward the rear edge (or rear peripheral portion) of the passive vibration member 100, thus providing a clearance space GS between the passive vibration member 100 and the support member 300. In this case, the coupling member 350 may be configured to connect the sidewall portion of the support member 300 and the rear edge (or rear peripheral portion) of the passive vibration member 100. Therefore, the support member 300 may cover one or more vibration generating devices 200 and may support the rear surface of the passive vibration member 100. For example, the support member 300 may cover one or more vibration generating devices 200 and may support the rear edge (or rear peripheral portion) of the passive vibration member 100.

[0231] Alternatively, the passive vibration member 100 may further include a sidewall portion connected to the front edge portion (or front peripheral portion) of the support member 300. The sidewall portion of the passive vibration member 100 may protrude from the rear edge portion (or rear peripheral portion) of the passive vibration member 100 toward the front edge portion (or front peripheral portion) of the support member 300, or may bend from the rear edge portion (or rear peripheral portion) of the passive vibration member 100 toward the front edge portion (or front peripheral portion) of the support member 300, thus providing a clearance space GS between the passive vibration member 100 and the support member 300. The stiffness of the passive vibration member 100 may be increased based on the sidewall portion. In this case, the coupling member 350 may be configured to connect between the sidewall portion of the passive vibration member 100 and the rear edge portion (or rear peripheral portion) of the support member 300. Therefore, the support member 300 may cover one or more vibration generating devices 200 and may support the rear surface 100a of the passive vibration member 100. For example, the support member 300 may cover one or more vibration generating devices 200 and may support the rear edge portion (or rear periphery portion) of the passive vibration member 100.

[0232] The device according to embodiments of this disclosure may also include one or more housings 250.

[0233] The housing 250 may be connected to or coupled to the rear edge (or rear periphery) of the passive vibration member 100 to individually cover one or more vibration generating devices 200. For example, the housing 250 may be connected to or coupled to the rear surface 100a of the passive vibration member 100 via coupling member 251. The housing 250 may be configured with a sealing space in the rear surface 100a of the passive vibration member 100, which covers or surrounds one or more vibration generating devices 200. For example, the housing 250 may be a sealing member, a sealing cover, a sealing box, or a speaker enclosure, but embodiments of this disclosure are not limited thereto.

[0234] The housing 250 may comprise one or more materials selected from metallic materials or non-metallic materials (or composite non-metallic materials). For example, the housing 250 may comprise one or more materials selected from metallic materials, plastics, and wood, but embodiments of this disclosure are not limited thereto.

[0235] When the passive vibrating member 100 or the vibration generating device 200 vibrates, the housing 250 according to embodiments of the present disclosure can maintain a constant impedance component based on the air acting on the passive vibrating member 100. For example, the air near the passive vibrating member 100 can resist the vibration of the passive vibrating member 100 and can act as an impedance component having resistance and reactance components based on frequency changes. Therefore, the housing 250 can be configured in the rear surface 100a of the passive vibrating member 100 to form a sealed space surrounding one or more vibration generating devices 200, and thus can maintain the impedance component (or air impedance or elastic impedance) based on the air acting on the passive vibrating member 100, thereby enhancing the sound characteristics and / or sound pressure level characteristics of the bass treble band and enhancing the sound quality of the treble band.

[0236] Figure 19 The sound output characteristics of an experimental example are shown compared to a vibration device according to an embodiment of this disclosure. Figure 19 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0237] Sound output characteristics can be measured using a sound analysis device. This device can be an APX525 audio measurement system. The sound analysis device may include: a sound card that sends or receives sound from a control PC; an amplifier that amplifies the signal generated by the sound card and transmits the amplified signal to the vibration device; and a microphone that collects the sound generated by the vibration device from the display panel. For example, the microphone can be positioned at the center of the vibration device, and the distance between the display panel and the microphone can be approximately 30 cm. Sound can be measured with the microphone perpendicular to the vibration device. The sound collected by the microphone can be input to the control PC via the sound card, and the sound from the vibration device can be analyzed by checking the control program. For example, the frequency response characteristics in the frequency range of 200 Hz to 20 kHz can be measured using a pulse program. Measurements are performed by applying 1 / 3 octave band smoothing during a sine sweep from 20 Hz to 20 kHz.

[0238] exist Figure 19 In the diagram, the thick solid line represents the sound output characteristics when a constant voltage is applied to the vibrating device, where the connecting member is based on... Figure 7 The entire surface of the vibrating device shown is attached and altered, and the dashed line represents the sound output characteristics when a reverse voltage is applied to the vibrating device of the experimental example.

[0239] like Figure 19 As shown, the average sound pressure level from 150 Hz to 8 kHz is approximately 72.68 dB (constant voltage drive) in the thick solid line and approximately 68.8 dB (reverse voltage drive) in the dashed line. Furthermore, the average sound pressure level from 150 Hz to 20 kHz is approximately 76.46 dB (constant voltage drive) in the thick solid line and approximately 70.75 dB (reverse voltage drive) in the dashed line. Therefore, in vibrating devices, when the connecting member is located on the front surface, it can be seen that reverse voltage drive is difficult.

[0240] Figure 20 The sound output characteristics of an experimental example are shown compared to a vibration device according to an embodiment of this disclosure. Figure 20 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0241] The methods for measuring sound output characteristics can be referenced above. Figure 19 The details described are the same, and therefore the description of it is omitted.

[0242] exist Figure 20 In the diagram, the thick solid line represents the sound output characteristics when a constant voltage is applied to the vibrating device, where the connecting member is based on... Figure 7The central half of the vibrating device shown is attached and altered, and the dashed line represents the sound output characteristics when a reverse voltage is applied to the vibrating device of the experimental example.

[0243] like Figure 20 As shown, the average sound pressure level from 150 Hz to 8 kHz is approximately 70.01 dB (constant voltage drive) in the thick solid line and approximately 68.2 dB (reverse voltage drive) in the dashed line. Furthermore, the average sound pressure level from 150 Hz to 20 kHz is approximately 73.91 dB (constant voltage drive) in the thick solid line and approximately 70.02 dB (reverse voltage drive) in the dashed line. Therefore, in vibrating devices, when the connecting components occupy a large area, reverse voltage drive becomes difficult.

[0244] Figure 21 It shows that according to Figure 7 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown. Figure 21 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0245] The methods for measuring sound output characteristics can be referenced above. Figure 19 The details described are the same, and therefore the description of it is omitted.

[0246] exist Figure 21 In the middle, the thick solid line indicates when... Figure 7 The image shows the sound output characteristics of the vibrating device when a constant voltage is applied, and the dashed line represents the sound output characteristics when a reverse voltage is applied.

[0247] It can be seen that the average sound pressure level from 150Hz to 8kHz is approximately 66.65dB (constant voltage drive) in the thick solid line and approximately 69.77dB (reverse voltage drive) in the dashed line. Furthermore, it can be seen that the average sound pressure level from 150Hz to 20kHz is approximately 70.77dB (constant voltage drive) in the thick solid line and approximately 70.55dB (reverse voltage drive) in the dashed line. Therefore, in a vibrating device, when the connecting member is partially located in the central region, it can be seen that reverse voltage drive is possible.

[0248] Figure 22 An experimental example and based on Figure 7 and Figure 10 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown. Figure 22 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0249] The methods for measuring sound output characteristics can be referenced above. Figure 19 The details described are the same, and therefore the description of it is omitted.

[0250] exist Figure 22 In the diagram, the thick solid line relates to an experimental example and represents the sound output characteristics when a constant voltage is applied to the vibrating device, where the connecting member is based on... Figure 7 The entire surface of the vibrating device shown is attached and changed, with the dashed line indicating the change when the vibrating device is attached to the surface. Figure 7 The sound output characteristics of the vibrating device shown are illustrated when a reverse voltage is applied, and the dashed line indicates the sound output characteristics when a reverse voltage is applied. Figure 10 The sound output characteristics of the vibrating device shown are when a reverse voltage is applied.

[0251] exist Figure 22 As can be seen from the graph, the average sound pressure level from 150Hz to 8kHz is approximately 76.83dB (constant voltage drive) in the thick solid line, approximately 76.16dB (reverse voltage drive) in the dashed line, and approximately 79.91dB in the dotted line. Furthermore, it can be seen that the average sound pressure level from 150Hz to 20kHz is approximately 80.56dB (constant voltage drive) in the thick solid line, approximately 77.66dB (reverse voltage drive) in the dashed line, and approximately 80.71dB in the dotted line. Therefore, in Figure 10 In the vibration device shown, it can be seen that the sound output characteristics are enhanced and the flatness is improved.

[0252] Figure 23 An experimental example and based on Figure 10 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown. Figure 23 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0253] The methods for measuring sound output characteristics can be referenced above. Figure 19 The details described are the same, and therefore the description of it is omitted.

[0254] exist Figure 23 In the middle, the thick solid line indicates when... Figure 7 The sound output characteristics of the vibrating device shown are illustrated when a reverse voltage is applied. The dashed line represents an experimental example and indicates the sound output characteristics when a reverse voltage is applied from... Figure 10 The sound output characteristics of the vibrating device shown are achieved by removing the central connecting member, and the dashed line represents an experimental example and indicates the sound output characteristics when a reverse voltage is applied through the device. Figure 10 The sound output characteristics of the vibration device shown are achieved by replacing the connecting components with rigid double-sided tape when a reverse voltage is applied.

[0255] exist Figure 23 As can be seen, the average sound pressure level from 150Hz to 8kHz is approximately 79.91dB in the thick solid line, approximately 73.95dB in the dashed line, and approximately 75.76dB in the dotted line. Furthermore, the average sound pressure level from 150Hz to 20kHz is approximately 80.71dB in the thick solid line, approximately 76.38dB in the dashed line, and approximately 75.68dB in the dotted line. Therefore, in a vibrating device where the connecting components are configured with rigid double-sided tape, it can be seen that the sound output characteristics are reduced and the flatness is decreased. In a vibrating device with foam tape at both ends (or sides), it can be seen that the sound pressure level characteristics increase slightly in the frequency band of 700Hz or lower.

[0256] Figure 24 An experimental example and based on Figure 10 , Figure 13 and Figure 15 The sound output characteristics of the vibration device according to the embodiments of this disclosure are shown. Figure 24 In the diagram, the horizontal axis represents frequency (Hz (Hertz)) and the vertical axis represents sound pressure level (SPL (dB (decibels)).

[0257] The methods for measuring sound output characteristics can be referenced above. Figure 19 The details described are the same, and therefore the description of it is omitted.

[0258] exist Figure 24 In the middle, the thick solid line indicates when... Figure 10 The sound output characteristics of the vibrating device shown are when a reverse voltage is applied. The dashed line represents the sound output characteristics when a reverse voltage is applied. Figure 13 The sound output characteristics of the vibrating device shown are when a reverse voltage is applied. The single-dotted line indicates the sound output characteristics when a reverse voltage is applied. Figure 15 The diagram shows the sound output characteristics of the vibrating device when a reverse voltage is applied, with the solid line representing an experimental example and indicating the effect of applying a reverse voltage to the device. Figure 10 The sound output characteristics of the vibration device shown are achieved by replacing the connecting components with rigid double-sided tape when a reverse voltage is applied.

[0259] exist Figure 24 As can be seen, the average sound pressure level from 150Hz to 8kHz is approximately 73.95dB in the solid line, approximately 79.73dB in the thick solid line, approximately 79.54dB in the dashed line, and approximately 78.74dB in the dotted line. Furthermore, the average sound pressure level from 150Hz to 20kHz is approximately 76.38dB in the solid line, approximately 80.29dB in the thick solid line, approximately 79.76dB in the dashed line, and approximately 79.41dB in the dotted line.

[0260] Therefore, in Figure 10In the vibrating equipment, it can be seen that the overall sound pressure level output characteristics increase and the flatness is good. Figure 13 In the vibrating equipment, it can be seen that the sound pressure level output characteristics increase in the frequency band of 8 kHz or lower, are good in the 250 Hz to 800 Hz frequency band, and remain stable in the 200 Hz or lower frequency band. Figure 15 In the vibrating equipment, it can be seen that the sound pressure level output characteristics are improved in the frequency band of 400Hz or higher.

[0261] The apparatus according to embodiments of the present disclosure will now be described.

[0262] A vibration device according to an embodiment of the present disclosure may include: a vibration member; a plurality of overlapping vibration generating parts; and a connecting member that connects at least a portion of the plurality of vibration generating parts to the vibration member.

[0263] According to some embodiments of this disclosure, each of the plurality of vibration generating units may include: a vibration layer comprising a piezoelectric material; a first electrode layer at a first surface of the vibration layer; and a second electrode layer at a surface of the vibration layer different from the first surface.

[0264] According to some embodiments of this disclosure, multiple vibration generating units can be configured to vibrate in the same direction.

[0265] According to some embodiments of this disclosure, the connecting member can be connected to the first electrode layer of the first vibration generating unit among a plurality of vibration generating units.

[0266] According to some embodiments of this disclosure, the connecting member may be disposed between the first electrode layer of the first vibration generating part and the vibration member in a plurality of vibration generating parts.

[0267] According to some embodiments of this disclosure, each of the plurality of vibration generating units may have a rectangular shape.

[0268] According to some embodiments of this disclosure, the first vibration generating part among a plurality of vibration generating parts can be directly connected to the vibration member through an adhesive layer.

[0269] According to some embodiments of this disclosure, the device may also include a protective member between two adjacent vibration generating parts in a plurality of vibration generating parts.

[0270] According to some embodiments of this disclosure, multiple vibration generating units can be configured to vibrate in different or opposite directions.

[0271] According to some embodiments of this disclosure, the connecting member may overlap with a portion of a first vibration generating portion among a plurality of vibration generating portions.

[0272] According to some embodiments of this disclosure, the device may also include an intermediate member between two adjacent vibration generating sections among a plurality of vibration generating sections.

[0273] According to some embodiments of this disclosure, the intermediate member may be stiffer than the plurality of vibration generating parts.

[0274] According to some embodiments of this disclosure, a plurality of vibration generating units may be configured to vibrate together with an intermediate member between the plurality of vibration generating units in different or opposite directions.

[0275] According to some embodiments of this disclosure, multiple vibration generating parts and vibration members can be separated by a connecting member between multiple vibration generating parts and vibration members.

[0276] According to some embodiments of this disclosure, the connecting member may include: a first connecting member; and at least two additional connecting members spaced apart from the first connecting member.

[0277] According to some embodiments of this disclosure, at least two additional connecting members may be spaced apart from the edge of the vibrating part, thereby defining an air gap between the additional connecting members, the vibrating part, and the vibrating member.

[0278] According to some embodiments of this disclosure, at least two additional connecting members may be spaced apart from the first connecting member, thereby defining an air gap between the additional connecting members, the first connecting member, the vibrating part, and the vibrating member.

[0279] According to some embodiments of this disclosure, at least two additional connecting members may be spaced apart from each other, thereby defining an air gap between adjacent additional connecting members, vibrating parts, and vibrating members.

[0280] According to some embodiments of this disclosure, at least two additional connecting members may include a second connecting member and a third connecting member, and the second connecting member and the third connecting member may be symmetrical to each other, wherein the first connecting member is between the second connecting member and the third connecting member.

[0281] According to some embodiments of this disclosure, the first connecting member may be more rigid than at least two additional connecting members.

[0282] According to some embodiments of this disclosure, the second connecting member of at least two additional connecting members may be more flexible than the first connecting member.

[0283] According to some embodiments of this disclosure, a second connecting member of at least two additional connecting members located on one side of the first connecting member may be disposed between the first connecting member and the end of the vibrating part.

[0284] According to some embodiments of this disclosure, a second connecting member of at least two additional connecting members located on one side of the first connecting member may be configured to be adjacent to the first connecting member.

[0285] According to some embodiments of this disclosure, the second connecting member of at least two additional connecting members on one side of the first connecting member can be configured to be adjacent to one side of the vibrating part.

[0286] According to some embodiments of this disclosure, the vibrating component may include one or more of the following: metal, plastic, paper, fiber, cloth, wood, rubber, leather, glass, and mirror.

[0287] According to some embodiments of this disclosure, the vibrating component may include one or more of the following: a display panel including a plurality of pixels configured to display an image; a screen panel on which the image is projected from a display device; a light-emitting diode (LED) lighting panel; an organic light-emitting lighting panel; an inorganic light-emitting lighting panel; a sign panel; interior materials of a vehicle; exterior materials of a vehicle; windows of a vehicle; interior materials of a vehicle seat; ceiling materials of a building; interior materials of a building; windows of a building; interior materials of an aircraft; windows of an aircraft; and a mirror.

[0288] A vibration device according to embodiments of the present disclosure may include: a vibration member; a plurality of overlapping vibration portions, each of the plurality of vibration portions including a vibration layer; and a connecting member connecting at least a portion of the vibration portions to the vibration member, wherein each of the vibration layers includes: a plurality of first portions; and a plurality of second portions comprising a material different from the plurality of first portions.

[0289] According to some embodiments of this disclosure, each of the plurality of first portions may include an inorganic material having a piezoelectric effect, and each of the plurality of second portions may include an organic material having flexible properties compared to the inorganic material that is the first portion.

[0290] According to some embodiments of this disclosure, a plurality of first portions and a plurality of second portions may be arranged alternately and repeatedly in a first direction.

[0291] According to some embodiments of this disclosure, the width of each of the plurality of first portions in a first direction may gradually decrease or increase in the direction from the center portion of the vibrating layer to the two edge portions of the vibrating layer, and / or the width of each of the plurality of second portions in a first direction may gradually decrease in the direction from the center portion of the vibrating layer to the two edge portions of the vibrating layer.

[0292] According to some embodiments of this disclosure, a plurality of first portions may be separated from each other in a first direction and in a second direction intersecting the first direction, and a plurality of second portions may be disposed between a plurality of first portions.

[0293] According to some embodiments of this disclosure, a plurality of first portions may be separated from each other in a first direction and in a second direction intersecting the first direction, and a plurality of second portions may surround each of the plurality of first portions.

[0294] According to some embodiments of this disclosure, each of the plurality of first parts may have a circular shape, an elliptical shape, a polygonal shape, or a ring shape.

[0295] According to some embodiments of this disclosure, each of the plurality of first portions may have a triangular shape, and 2N adjacent first portions of the plurality of first portions having a triangular shape may be arranged to be adjacent to each other to form a 2N-angle shape, where N is a natural number of 2 or greater.

[0296] The vibration generating device according to embodiments of this disclosure can be applied to vibration generating devices installed in devices (electronic devices). Devices (electronic devices) according to embodiments of this disclosure can be applied to mobile devices, video phones, smartwatches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, bending devices, portable multimedia players (PMPs), personal digital assistants (PDAs), electronic notebooks, desktop personal computers (PCs), laptop PCs, netbooks, workstations, navigation devices, car navigation devices, car display devices, televisions (TVs), wallpaper display devices, signage devices, game consoles, laptops, monitors, cameras, camcorders, home appliances, etc. Furthermore, the vibration generating device according to some embodiments of this disclosure can be applied to organic light-emitting lighting devices or inorganic light-emitting lighting devices. When the vibration generating device is applied to a lighting device, the vibration device can function as both a light source and a speaker. Furthermore, when the vibration generating device according to some embodiments of this disclosure is applied to a mobile device, the vibration device can be one or more of a speaker, a receiver, or a tactile sensor, but the embodiments of this disclosure are not limited thereto.

[0297] The device according to embodiments of the present disclosure can cause the display panel to vibrate to generate sound, and can output sound with enhanced sound pressure level characteristics in the forward direction of the display panel.

[0298] The device according to embodiments of the present disclosure can enhance the mid-high frequency characteristics, low-high frequency characteristics, and / or mid-low-high frequency characteristics of the sound generated based on the displacement of the display panel as the amplitude displacement of the display panel increases, and can improve the flatness of the sound.

[0299] The vibration device according to embodiments of this disclosure can enhance the mid-high frequency characteristics, low-high frequency characteristics, and / or mid-low frequency characteristics of sound generated based on the displacement of the diaphragm, and can improve the flatness of the sound.

[0300] It will be apparent to those skilled in the art that various modifications and variations can be made to this disclosure without departing from the technical spirit or scope thereof. Therefore, this disclosure is intended to cover such modifications and variations as long as they fall within the scope of the appended claims and their equivalents.

[0301] Regarding the implementation methods including the above embodiments, the following notes are also disclosed:

[0302] Appendix 1. A vibration device, comprising:

[0303] Vibrating components;

[0304] Multiple overlapping vibration-generating parts; and

[0305] A connecting member that connects at least a portion of the plurality of vibration generating parts to the vibration member.

[0306] Appendix 2. The vibration device according to Appendix 1, wherein each of the plurality of vibration generating units comprises:

[0307] Including the vibrating layer of piezoelectric materials;

[0308] The first electrode layer at the first surface of the vibration layer; and

[0309] A second electrode layer located at a surface of the vibration layer that is different from the first surface.

[0310] Note 3. The vibration device according to Note 1, wherein the plurality of vibration generating units are configured to vibrate in the same direction.

[0311] Note 4. The vibration device according to Note 3, wherein the connecting member is connected to the first electrode layer of the first vibration generating unit among the plurality of vibration generating units.

[0312] Note 5. The vibration device according to Note 3, wherein the connecting member is disposed between the first electrode layer of the first vibration generating part of the plurality of vibration generating parts and the vibration member.

[0313] Note 6. The vibration device according to Note 1, wherein each of the plurality of vibration generating units has a rectangular shape.

[0314] Note 7. The vibration device according to Note 1, wherein the first vibration generating part of the plurality of vibration generating parts is directly connected to the vibration member through an adhesive layer.

[0315] Note 8. The vibration device according to Note 1 further includes a protective member between two adjacent vibration generating parts in the plurality of vibration generating parts.

[0316] Note 9. The vibration device according to Note 1, wherein the plurality of vibration generating units are configured to vibrate in different or opposite directions.

[0317] Note 10. The vibration device according to Note 9, wherein the connecting member overlaps with a portion of the first vibration generating part of the plurality of vibration generating parts.

[0318] Note 11. The vibration device according to Note 9 further includes an intermediate member between two adjacent vibration generating units in the plurality of vibration generating units.

[0319] Note 12. The vibration device according to Note 11, wherein the intermediate member is stiffer than the plurality of vibration generating parts.

[0320] Note 13. The vibration device according to Note 11, wherein the plurality of vibration generating units are configured to vibrate together with the intermediate member between the plurality of vibration generating units in different or opposite directions.

[0321] Note 14. The vibration device according to Note 9, wherein the vibration generating part is spaced apart from the vibration member by the connecting member between the vibration generating part and the vibration member.

[0322] Note 15. The vibration device according to Note 9, wherein the connecting member comprises:

[0323] First connecting member; and

[0324] At least two additional connecting members spaced apart from the first connecting member.

[0325] Note 16. The vibration device according to Note 15, wherein the at least two additional connecting members are spaced apart from the edge of the vibration generating part, thereby defining an air gap between the additional connecting members, the vibration generating part and the vibration member.

[0326] Note 17. The vibration device according to Note 15, wherein the at least two additional connecting members are spaced apart from the first connecting member, thereby defining an air gap between the additional connecting members, the first connecting member, the vibration generating part and the vibration member.

[0327] Note 18. The vibration device according to Note 15, wherein the at least two additional connecting members are spaced apart from each other, thereby defining an air gap between adjacent additional connecting members, the vibration generating part and the vibration member.

[0328] Note 19. The vibration device according to Note 15, wherein the at least two additional connecting members include a second connecting member and a third connecting member, and

[0329] The second connecting member and the third connecting member are symmetrical to each other, wherein the first connecting member is located between the second connecting member and the third connecting member.

[0330] Note 20. The vibration device according to Note 15, wherein the first connecting member is stiffer than the at least two additional connecting members.

[0331] Note 21. The vibration device according to Note 15, wherein the at least two additional connecting members are more elastic than the first connecting member.

[0332] Note 22. The vibration device according to Note 15, wherein the second connecting member of the at least two additional connecting members located on one side of the first connecting member is disposed between the end of the first connecting member and the vibration generating part.

[0333] Note 23. The vibration device according to Note 15, wherein the second connecting member of the at least two additional connecting members located on one side of the first connecting member is arranged adjacent to the first connecting member.

[0334] Note 24. The vibration device according to Note 15, wherein the second connecting member of the at least two additional connecting members at one side of the first connecting member is arranged adjacent to one side of the vibration generating part.

[0335] Note 25. The vibrating device according to Note 1, wherein the vibrating component comprises one or more of metal, plastic, paper, fiber, cloth, wood, rubber, leather, glass and mirror.

[0336] Appendix 26. The vibration device according to Appendix 1, wherein the vibration component comprises one or more of the following: a display panel comprising a plurality of pixels configured to display an image; a screen panel onto which an image is projected from the display device; a light-emitting diode (LED) illumination panel; an organic light-emitting illumination panel; an inorganic light-emitting illumination panel; a sign panel; interior materials of a vehicle device; exterior materials of a vehicle device; glass windows of a vehicle device; interior materials of a vehicle device seat; ceiling materials of a building; interior materials of a building; glass windows of a building; interior materials of an aircraft; glass windows of an aircraft; and a mirror.

[0337] Appendix 27. A vibration device, comprising:

[0338] Vibrating components;

[0339] A plurality of overlapping vibration generating parts, each of which includes a vibration part; and

[0340] A connecting member that connects at least a portion of the vibrating part to the vibrating member.

[0341] The vibrating part includes a vibrating layer, and the vibrating layer includes: a plurality of first parts; and a plurality of second parts comprising a material different from the plurality of first parts.

[0342] Note 28. The vibration device according to Note 27, wherein each of the plurality of first portions comprises an inorganic material having a piezoelectric effect, and each of the plurality of second portions comprises an organic material having flexible properties compared to the inorganic material of the first portion.

[0343] Note 29. The vibration device according to Note 27, wherein the plurality of first portions and the plurality of second portions are arranged alternately and repeatedly in a first direction.

[0344] Note 30. The vibration device according to Note 29, wherein,

[0345] The width of each of the plurality of first portions in the first direction gradually decreases or increases in the direction from the center portion of the vibrating layer to the two edge portions of the vibrating layer, and / or

[0346] The width of each of the plurality of second portions in the first direction gradually decreases in the direction from the center portion of the vibrating layer to the two edge portions of the vibrating layer.

[0347] Note 31. The vibration device according to Note 27, wherein the plurality of first portions are spaced apart from each other in a first direction and in a second direction intersecting the first direction, and the plurality of second portions are disposed between the plurality of first portions.

[0348] Note 32. The vibration device according to Note 27, wherein the plurality of first portions are spaced apart from each other in a first direction and in a second direction intersecting the first direction, and the plurality of second portions surround each of the plurality of first portions.

[0349] Note 33. The vibration device according to Note 32, wherein each of the plurality of first parts has a circular shape, an elliptical shape, a polygonal shape or an annular shape.

[0350] Note 34. The vibration device according to Note 32, wherein each of the plurality of first parts has a triangular shape, and 2N adjacent first parts of the plurality of first parts having triangular shapes are arranged to be adjacent to each other to form a 2N-angle shape, where N is a natural number of 2 or greater.

[0351] Note 35. An electronic device comprising a vibration device according to any one of Notes 1 to 34.

Claims

1. A vibration device, comprising: Vibrating components; Multiple vibration-generating parts that overlap with each other; A connecting member that connects at least a portion of the plurality of vibration generating units to the vibration member; An adhesive layer surrounding one of the plurality of vibration generating portions; as well as An intermediate member is disposed between two adjacent vibration generating parts among the plurality of vibration generating parts, and is disposed between adhesive layers surrounding the adjacent vibration generating parts. The adhesive layer comprises an electrically insulating material, and the intermediate component comprises a rigid material.

2. The vibration apparatus according to claim 1, wherein Each of the plurality of vibration generating units includes: Including the vibrating layer of piezoelectric materials; The first electrode layer at the first surface of the vibration layer; and A second electrode layer located at a surface of the vibration layer that is different from the first surface.

3. The vibration device according to claim 1, wherein, The plurality of vibration generating units are configured to vibrate in the same direction.

4. The vibration apparatus according to claim 3, wherein The connecting member is connected to the first electrode layer of the first vibration generating unit among the plurality of vibration generating units.

5. The vibration apparatus according to claim 3, wherein The connecting member is disposed between the first electrode layer of the first vibration generating part and the vibration member in the plurality of vibration generating parts.

6. The vibration apparatus according to claim 1, wherein Each of the plurality of vibration generating parts has a rectangular shape.

7. The vibration apparatus according to claim 1, wherein The first vibration generating part of the plurality of vibration generating parts is directly connected to the vibration member through the adhesive layer.

8. The vibration device according to claim 1 further includes a protective member between two adjacent vibration generating parts in the plurality of vibration generating parts.

9. The vibration apparatus according to claim 1, wherein The plurality of vibration generating units are configured to vibrate in different or opposite directions.

10. The vibration apparatus according to claim 9, wherein The connecting member overlaps with a portion of the first vibration generating part among the plurality of vibration generating parts.

11. The vibration apparatus according to claim 1, wherein The intermediate component is stiffer than the plurality of vibration generating parts.

12. The vibration apparatus according to claim 1, wherein The plurality of vibration generating units are configured to vibrate together with the intermediate member between the plurality of vibration generating units in different or opposite directions.

13. The vibration apparatus according to claim 9, wherein The vibration generating unit is spaced apart from the vibration member by the connecting member between the vibration generating unit and the vibration member.

14. The vibration apparatus according to claim 9, wherein The connecting component includes: First connecting member; and At least two additional connecting members spaced apart from the first connecting member.

15. The vibratory apparatus of claim 14, wherein, The at least two additional connecting members are spaced apart from the edge of the vibration generating part, thereby defining an air gap between the additional connecting members, the vibration generating part, and the vibration member.

16. The vibratory apparatus of claim 14, wherein, The at least two additional connecting members are spaced apart from the first connecting member, thereby defining an air gap between the additional connecting members, the first connecting member, the vibration generating part, and the vibration member.

17. The vibratory apparatus of claim 14, wherein, The at least two additional connecting members are spaced apart from each other, thereby defining an air gap between adjacent additional connecting members, the vibration generating part, and the vibration member.

18. The vibratory apparatus of claim 14, wherein, The at least two additional connecting members include a second connecting member and a third connecting member, and The second connecting member and the third connecting member are symmetrical to each other, wherein the first connecting member is located between the second connecting member and the third connecting member.

19. The vibratory apparatus of claim 14, wherein, The first connecting member is more rigid than the at least two additional connecting members.

20. The vibratory apparatus of claim 14, wherein, The at least two additional connecting members are more flexible than the first connecting member.

21. The vibratory apparatus of claim 14, wherein, The second connecting member of the at least two additional connecting members located on one side of the first connecting member is disposed between the end of the first connecting member and the vibration generating part.

22. The vibratory apparatus of claim 14, wherein, The second connecting member of the at least two additional connecting members located on one side of the first connecting member is positioned adjacent to the first connecting member.

23. The vibratory apparatus of claim 14, wherein, The second of the at least two additional connecting members located on one side of the first connecting member is positioned adjacent to one side of the vibration generating part.

24. The vibratory apparatus of claim 1, wherein, The vibrating component includes one or more of the following: metal, plastic, paper, fiber, cloth, wood, rubber, leather, glass, and mirror.

25. The vibratory apparatus of claim 1, wherein, The vibrating component includes one or more of the following: a display panel, the display panel including a plurality of pixels configured to display an image; The screen panel is where the image will be projected from the display device. LED lighting panel; Organic light-emitting lighting panels; inorganic light-emitting lighting panels; signage panels; Internal materials of vehicle equipment; external materials of vehicle equipment; glass windows of vehicle equipment; The interior material of the vehicle's seats; Building ceiling materials; Building interior materials; Building windows; aircraft interior materials; aircraft windows; and mirrors.

26. A vibration device, comprising: Vibrating components; Multiple overlapping vibration generating parts, each of which includes a vibration part; as well as A connecting member that connects at least a portion of the vibrating part to the vibrating member. The vibrating part includes a vibrating layer, and the vibrating layer includes: a plurality of first parts; and a plurality of second parts comprising a material different from the plurality of first parts. The vibration device further includes: An adhesive layer surrounding one of the plurality of vibration generating portions; and An intermediate member is disposed between two adjacent vibration generating parts among the plurality of vibration generating parts, and is disposed between adhesive layers surrounding the adjacent vibration generating parts. The adhesive layer comprises an electrically insulating material, and the intermediate component comprises a rigid material.

27. The vibratory apparatus of claim 26, wherein, Each of the plurality of first portions includes an inorganic material having a piezoelectric effect, and each of the plurality of second portions includes an organic material having flexible properties compared to the inorganic material that is the first portion.

28. The vibratory apparatus of claim 26, wherein, The plurality of first portions and the plurality of second portions are arranged alternately and repeatedly in the first direction.

29. The vibration device according to claim 28, wherein, The width of each of the plurality of first portions in the first direction gradually decreases or increases in the direction from the center portion of the vibrating layer to the two edge portions of the vibrating layer, and / or The width of each of the plurality of second portions in the first direction gradually decreases in the direction from the center portion of the vibrating layer to the two edge portions of the vibrating layer.

30. The vibratory apparatus of claim 26, wherein, The plurality of first portions are spaced apart from each other in a first direction and in a second direction intersecting the first direction, and the plurality of second portions are disposed between the plurality of first portions.

31. The vibratory apparatus of claim 26, wherein, The plurality of first portions are spaced apart from each other in a first direction and a second direction crossing the first direction, and the plurality of second portions surround each of the plurality of first portions.

32. The vibratory apparatus of claim 31, wherein, Each of the plurality of first portions has a circular shape, an elliptical shape, a polygonal shape, or a circular ring shape.

33. The vibratory apparatus of claim 31, wherein, Each of the plurality of first portions has a triangular shape, and 2N adjacent first portions of the plurality of first portions having a triangular shape are arranged adjacent to each other to form a 2N-angled shape, where N is a natural number of 2 or more. 34.An electronic device including the vibration device according to any one of claims 1 to 33.

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