Device for outputting sound

Abstract

An apparatus for outputting sound. An apparatus includes a vibrating member, a vibrating apparatus located at a rear surface of the vibrating member and configured to vibrate the vibrating member, and a curved surface support member located between the vibrating member and the vibrating apparatus, wherein the curved surface support member includes a first surface adjacent to the vibrating apparatus and a second surface opposite to the first surface, and the first surface includes a curved surface.

Description

Technical Field

[0001] This disclosure relates to a device, and more specifically, to a device for outputting sound. Background Technology

[0002] The equipment includes a separate speaker or sound device for providing sound. When a speaker is provided in the equipment, the design and space arrangement of the equipment become limited due to the space occupied by the speaker.

[0003] For example, a loudspeaker used in a device can be an actuator that includes a magnet and a coil. However, when actuators are used in devices, there is a drawback in terms of thickness. Piezoelectric devices, which aim to achieve thinner thicknesses, are attracting considerable attention.

[0004] Due to their fragile nature, piezoelectric devices are easily damaged by external impacts, leading to low reliability in sound reproduction. Furthermore, when loudspeakers using piezoelectric devices are applied to flexible devices, their fragility can cause damage. Summary of the Invention

[0005] Therefore, the inventors have recognized the aforementioned problems and have conducted various experiments to realize a vibration device that can enhance sound quality and sound pressure level characteristics. Through these experiments, the inventors have invented a new vibration device and a device incorporating this vibration device, which can enhance sound quality and sound pressure level characteristics.

[0006] Therefore, embodiments of this disclosure relate to a device that substantially eliminates one or more of the problems caused by limitations and defects in the related art.

[0007] One aspect of this disclosure aims to provide a device that can cause a vibrating object to vibrate to produce vibration or sound, and can enhance sound characteristics and / or sound pressure level characteristics.

[0008] Additional features and aspects will be set forth in the description which follows, and will be apparent in part 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 from which they may be derived, as well as by the claims and drawings.

[0009] To achieve these and other aspects of the inventive concept, as embodied and broadly described herein, an apparatus may include: a vibrating member; a vibrating device located at the rear surface of the vibrating member and configured to vibrate the vibrating member; and a curved support member located between the vibrating member and the vibrating device. The curved support member includes a first surface adjacent to the vibrating device and a second surface opposite to the first surface, and the first surface includes a curved surface.

[0010] Other systems, methods, features, and advantages will become apparent to those skilled in the art upon studying the following figures and detailed description. All such additional systems, methods, features, and advantages are intended to be included in this specification, fall within the scope of this disclosure, and are protected by the appended claims. Nothing in this section should be construed as limiting these claims. Further aspects and advantages are discussed below in conjunction with embodiments of this disclosure.

[0011] It should be understood that the foregoing general description and the following detailed description of this disclosure are exemplary and explanatory, and are intended to provide further explanation of the claimed inventive concept.

[0012] Note 1. A device for outputting sound, said device comprising:

[0013] Vibrating components;

[0014] A vibration device located on the rear surface of the vibrating member and configured to vibrate the vibrating member; and

[0015] A curved support member is located between the vibrating member and the vibrating device.

[0016] The curved support member includes a first surface adjacent to the vibration device and a second surface opposite to the first surface, and the first surface includes a curved surface.

[0017] Note 2. The device according to Note 1, wherein the second surface includes a surface different from the first surface.

[0018] Note 3. The device according to Note 1, wherein the first surface of the curved support member has a curvature of 300R to 4000R.

[0019] Note 4. The device according to Note 1, wherein the distance between the first surface and the second surface has a maximum distance at the central portion of the curved support member.

[0020] Note 5. The device according to Note 4, wherein the maximum distance has a distance of 0.45 mm to 6 mm.

[0021] Note 6. The device according to Note 4, wherein the distance between the first surface and the second surface has a distance that gradually decreases from the maximum distance in a direction away from the center in a first direction.

[0022] Note 7. The device according to Note 6, wherein the distance between the first surface and the second surface has a constant distance in a second direction different from the first direction.

[0023] Note 8. The device according to Note 6, wherein the vibration device includes a vibration portion formed as a continuous structure in the first direction.

[0024] Note 9. The device according to Note 1 further includes a second vibrating member located between the vibrating member and the curved support member.

[0025] Note 10. The device according to Note 9, wherein the second vibrating member dissipates heat generated from the vibrating member and increases the mass of the vibrating member.

[0026] Note 11. The device according to Note 1, wherein the vibration device has a shape corresponding to the curvature of the first surface of the curved support member.

[0027] Note 12. The device according to Note 1, wherein the first and second transverse surfaces of the vibrating device are parallel to the rear surface of the vibrating member.

[0028] Note 13. The device according to Note 1 further includes a first connecting member located between the vibrating member and the curved support member.

[0029] Note 14. The device according to Note 13, wherein the first transverse surface and the second transverse surface of the vibrating device contact the first connecting member.

[0030] Note 15. The device according to Note 13, wherein the first connecting member includes a hollow portion.

[0031] Note 16. The device according to Note 1 further includes a second connecting member located between the curved support member and the vibration device.

[0032] Note 17. The device according to Note 1, wherein the vibration device comprises:

[0033] Vibrating part;

[0034] A first electrode portion, the first electrode portion being located on a first surface of the vibrating portion; and

[0035] The second electrode portion is located on a surface of the vibrating portion that is different from the first surface.

[0036] Note 18. The device according to Note 17, wherein the vibration device comprises:

[0037] A first cover member, the first cover member being located at the first electrode portion; and

[0038] The second cover member is located at the second electrode portion.

[0039] Note 19. The device according to Note 18, the device further includes:

[0040] A first adhesive layer, the first adhesive layer being located between the first cover member and the first electrode portion; and

[0041] A second adhesive layer is located between the second cover member and the second electrode portion.

[0042] Note 20. The device according to Note 19, wherein the vibrating part comprises an inorganic material part having piezoelectric properties.

[0043] Note 21. The device according to Note 19, wherein the vibrating part comprises:

[0044] Multiple inorganic material portions, wherein the multiple inorganic material portions have piezoelectric properties; and

[0045] An organic material portion is located between the plurality of inorganic material portions.

[0046] Note 22. The device according to Note 1, wherein the vibrating member comprises a first region and a second region, and

[0047] The vibration device includes a first vibration device located in the first region and a second vibration device located in the second region.

[0048] Note 23. The device according to Note 1, wherein the vibration device comprises two or more vibration generators, and

[0049] The two or more vibration generators are configured to vibrate in the same direction.

[0050] Note 24. The device according to Note 1, wherein the vibrating component comprises a metallic material, or comprises a single non-metallic material or a composite non-metallic material, wherein the composite non-metallic material comprises one or more of wood, rubber, plastic, glass, fiber, cloth, paper and leather.

[0051] Note 25. The device according to Note 1, wherein the vibrating member includes one or more of a display panel, a light-emitting diode illumination panel, an organic light-emitting diode illumination panel, and an inorganic light-emitting diode illumination panel, the display panel including a plurality of pixels configured to display an image.

[0052] Appendix 26. The device according to Appendix 1, wherein the vibrating component comprises one or more of the following: a display panel comprising pixels configured to display images, a screen panel onto which images are projected from a display device, a lighting panel, a sign panel, vehicle interior materials, vehicle windows, vehicle exterior materials, building ceiling materials, building interior materials, building windows, aircraft interior materials, aircraft windows, metals, wood, rubber, plastics, glass, fibers, cloth, paper, leather, and mirrors. Attached Figure Description

[0053] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this application. The drawings illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0054] Figure 1 An apparatus according to one embodiment of the present disclosure is shown.

[0055] Figure 2A It is along Figure 1 The cross-sectional view taken by line A-A', and Figure 2B It is along Figure 1 The cross-sectional view taken by line B-B'.

[0056] Figure 3 yes Figure 2B Enlarged view of the vibrating components and vibrating equipment.

[0057] Figure 4 This is a perspective view of a vibration member and a vibration device according to one embodiment of the present disclosure.

[0058] Figure 5 This is a plan view of a vibration device according to one embodiment of the present disclosure.

[0059] Figure 6 It is along Figure 5 The cross-sectional view taken from line C-C'.

[0060] Figure 7A and Figure 7B The structure of the vibration section of a vibration device according to one embodiment of the present disclosure is shown.

[0061] Figure 8A It is along Figure 1 Another cross-sectional view taken from line A-A', and Figure 8B It is along Figure 1 Another cross-sectional view taken from line B-B'.

[0062] Figure 9 yes Figure 8BEnlarged view of the vibrating components and vibrating equipment.

[0063] Figure 10 This is another perspective view of a vibration member and a vibration device according to one embodiment of the present disclosure.

[0064] Figure 11A An example of a vibration device connected to a second vibration member according to one embodiment of the present disclosure is shown, and Figure 11B An example is shown where the vibration device and the second vibration component are connected to each other, according to the experimental example.

[0065] Figure 12 Shown in Figure 11A and Figure 11B The sound pressure level relative to frequency in the device.

[0066] Figure 13A An example is shown of a vibration device coupled to the rear surface of a vibration member according to one embodiment of the present disclosure. Figure 13B The second vibrating member is shown being added. Figure 13A Examples of structures, Figure 13C An example is shown of a vibration device connected to the rear surface of a vibrating component according to an experimental example, and Figure 13D The second vibrating member is shown being added. Figure 13C An example of the structure of the experimental case.

[0067] Figure 14 Shown in Figure 13A and Figure 13C The sound pressure level relative to frequency in the device.

[0068] Figure 15 Shown in Figure 13B and Figure 13C The sound pressure level relative to frequency in the device.

[0069] Figure 16 Shown in Figures 13B to 13D The sound pressure level relative to frequency in the device.

[0070] Figure 17 Shown in Figures 13B to 13D The sound pressure level relative to frequency in the device.

[0071] Throughout the accompanying drawings and detailed description, unless otherwise stated, the same reference numerals should be understood to denote the same elements, features, and structures. For clarity, illustration, and convenience, the relative dimensions and descriptions of these elements may be exaggerated. Detailed Implementation

[0072] Embodiments 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 descriptions might unnecessarily obscure aspects of this disclosure. The described progression of processing steps and / or operations is illustrative; however, the order of steps and / or operations is not limited to the order set forth herein and can be varied as is known in the art, except for steps and / or operations that must occur in a specific order. Unless otherwise stated, the same reference numerals always denote the same elements. The names of the various elements used in the following explanation are chosen solely for convenience in writing the specification and may therefore differ from the names used in actual products.

[0073] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described 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 to make this disclosure thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0074] The shapes, dimensions, ratios, angles, and quantities 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 denote the same elements. In the following description, detailed descriptions that determine relevant known functions or configurations will be omitted where such descriptions unnecessarily obscure the essential points of this disclosure.

[0075] When using terms such as “including,” “having,” “comprising,” “constituting,” “made of,” “formed from,” etc., one or more additional elements may be added, unless a term such as “only” is used. Unless the context clearly indicates otherwise, singular terms may include plural forms.

[0076] When interpreting components, they are interpreted to include a range of tolerances, even if no explicit description is provided.

[0077] When describing positional relationships, for example, when using terms such as "above," "upper," "below," "above," "below," "down," "near," "close to," "adjacent to," "beside," or "adjoining," one or more parts may be arranged between two other parts, unless more restrictive terms such as "immediately," "directly," or "closely" are used. For example, when a structure is described as being "above," "upper," "below," "above," "below," "near," or "beside" another structure, or "close to," "adjacent to," or "adjoining" another structure, the description should be interpreted to include situations where these structures are in contact with each other and where a third structure is set or inserted between them. Furthermore, the terms "front," "back," "left," "right," "top," "bottom," "downward," "upward," "above," "downward," etc., refer to any frame of reference.

[0078] When describing temporal relationships, such as describing chronological order as “after,” “following,” “next,” “before,” “prior to,” etc., discontinuous situations may be included unless more restrictive terms such as “exactly,” “immediately,” or “directly” are used.

[0079] It should be understood that although the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to separate one element from another. For example, without departing from the scope of the invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0080] 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 can be used to indicate directions with a wider range of orientations within the scope of which the components of this disclosure are capable of functional operation.

[0081] The term "at least one" should be understood to include any and all combinations of one or more related listed items. For example, "at least one of the first, second, and third items" means a combination of all items drawn from two or more of the first, second, and third items, as well as the first, second, or third item.

[0082] 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. For example, A, B, and / or C can refer to only A; only B; only C; any one or some combinations of A, B, and C; or all of A, B, and C.

[0083] As will be fully understood by those skilled in the art, the features of the various embodiments of this disclosure may be linked or combined with each other in part or in whole, and may interoperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other or may be implemented together in an interdependent relationship.

[0084] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. For ease of description, the scale of each element shown in the drawings differs from the actual scale, and therefore the scope is not limited to the scale shown in the drawings.

[0085] Figure 1 An apparatus according to one embodiment of the present disclosure is shown. Figure 2A It is along Figure 1 A cross-sectional view taken from line A-A'. Figure 2B It is along Figure 1 A cross-sectional view taken from line B-B'. Figure 3 yes Figure 2B Enlarged views of the vibrating components and vibrating devices, and Figure 4 This is a perspective view of a vibration member and a vibration device according to one embodiment of the present disclosure.

[0086] Reference Figure 1 and Figure 2A According to one embodiment of the present disclosure, the device 10 may include a vibration member 100 and a vibration device 200 disposed on the rear surface (or back side) of the vibration member 100.

[0087] For example, the vibrating member 100 can output sound based on the vibration of the vibrating device 200. The vibrating device 200 can output sound by using the vibrating member 100 as a vibrating plate. For example, by using the vibrating member 100 as a vibrating plate, the vibrating device 200 can output sound to the front surface of the vibrating member 100. For example, the vibrating device 200 can generate sound such that the sound propagates toward the front surface of the vibrating member 100. The vibrating device 200 can vibrate the vibrating member 100 to output sound. For example, the vibrating device 200 can directly vibrate the vibrating member 100 to output sound. For example, the vibrating member 100 can be a vibrating object, a display panel, a vibrating plate, or a front member, but the embodiments of this disclosure are not limited thereto. In the following, an embodiment in which the vibrating member is a display panel will be described.

[0088] The vibrating member 100 can display images (e.g., electronic images, digital images, still images, or video images). For example, the vibrating member 100 can emit light to display images. The display panel can be a curved display panel or any type of display panel (e.g., a liquid crystal display panel, an organic light-emitting display panel, a quantum dot light-emitting display panel, a micro-light-emitting diode display panel, and an electrophoretic display panel). For example, the vibrating member 100 can be a flexible light-emitting display panel, a flexible electrophoretic display panel, a flexible electrowetting display panel, a flexible micro-light-emitting diode display panel, or a flexible quantum dot light-emitting display panel, but the embodiments of this disclosure are not limited thereto.

[0089] A vibration member 100 according to one embodiment of the present disclosure may include a display area AA for displaying an image based on the driving of a plurality of pixels. The vibration member 100 may include a non-display area IA surrounding the display area AA, but embodiments of the present disclosure are not limited thereto.

[0090] A vibrating member 100 according to one embodiment of the present disclosure may include an anode electrode, a cathode electrode, and a light-emitting device, and may display images in a manner such as top-emitting, bottom-emitting, or dual-emitting types based on a structure comprising a pixel array layer of multiple pixels. In the top-emitting type, visible light emitted from the pixel array layer may illuminate in a forward direction along the substrate to allow image display, and in the bottom-emitting type, visible light emitted from the pixel array layer may illuminate in a rearward direction along the substrate to allow image display.

[0091] A vibration member 100 according to one embodiment of the present disclosure may include a pixel array portion disposed on a substrate. The pixel array portion may include a plurality of pixels that display an image based on signals provided through each signal line. The signal lines may include gating lines, data lines, and pixel drive power lines, but embodiments of the present disclosure are not limited thereto.

[0092] Each of the plurality of pixels may include a pixel circuit layer comprising a driving TFT disposed in a pixel region consisting of a plurality of gate lines and / or a plurality of data lines, an anode electrode electrically connected to the driving TFT, a light-emitting device formed on the anode electrode, and a cathode electrode electrically connected to the light-emitting device.

[0093] The driving TFT can be disposed in the transistor region of each pixel region disposed in the substrate. The driving TFT may include a gate electrode, a gate insulating layer, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the driving TFT may include silicon such as amorphous silicon (a-Si), polycrystalline silicon (poly-Si), or low-temperature poly-Si, or may include oxides such as indium gallium zinc oxide (IGZO), but the embodiments disclosed herein are not limited thereto.

[0094] The anode electrode (or pixel electrode) can be set in the opening area of ​​each pixel area and can be electrically connected to the driving TFT.

[0095] A light-emitting device according to one embodiment of this disclosure may include an organic light-emitting device layer disposed on an anode electrode. The organic light-emitting device layer may be configured such that pixels emit light of the same color (e.g., white light) or emit light of different colors (e.g., red, green, and blue light, or combinations of other colors). A cathode electrode (or common electrode) may be connected to the organic light-emitting device layer disposed in each pixel region. For example, the organic light-emitting device layer may have a stacked structure comprising two or more structures or a single structure comprising the same color.

[0096] In another embodiment of this disclosure, the organic light-emitting device layer may have a stacked structure for each pixel, the stacked structure comprising two or more structures containing one or more different colors. The two or more structures containing one or more different colors may be configured as one or more of blue, red, yellow-green, and green, or combinations thereof, but embodiments of this disclosure are not limited thereto. Examples of combinations may include blue and red, red and yellow-green, red and green, and red / yellow-green / green, but embodiments of this disclosure are not limited thereto. Furthermore, combinations can be applied regardless of the stacking order. The stacked structure comprising two or more structures having the same color or one or more different colors may also include a charge generation layer located between the two or more structures. The charge generation layer may have a PN junction structure and may include an N-type charge generation layer and a P-type charge generation layer.

[0097] According to another embodiment of this disclosure, the light-emitting device may include a miniature light-emitting diode (LED) device electrically connected to each of the anode electrode and the cathode electrode. The miniature LED device may be an integrated circuit (IC) type or a chip type LED. The miniature LED device may include a first terminal electrically connected to the anode electrode and a second terminal electrically connected to the cathode electrode. The cathode electrode may be connected to the second terminal of the miniature LED device disposed in each pixel region.

[0098] An encapsulation portion can be formed on a substrate to surround a pixel array portion, thereby preventing oxygen or water from penetrating the light-emitting device layer of the pixel array portion. According to one embodiment of this disclosure, the encapsulation portion can be formed as a multilayer structure with alternating layers of organic and inorganic materials, but embodiments of this disclosure are not limited thereto. For example, the encapsulation portion can also be formed from a single inorganic material layer or a single organic material layer. The inorganic material layer prevents oxygen or water from penetrating the light-emitting device layer of the pixel array portion. The organic material layer can be formed to have a thickness relatively greater than that of the inorganic material layer to cover particles that appear during the manufacturing process. For example, the encapsulation portion may include a first inorganic layer, an organic layer on the first inorganic layer, and a second inorganic layer on the organic layer. The organic layer may be a particle covering layer, but the terminology is not limited thereto. A touch panel can be disposed on the encapsulation portion, or it can be disposed on the rear surface of the pixel array portion or within the pixel array portion.

[0099] According to one embodiment of this disclosure, the vibrating member 100 may include a first substrate, a second substrate, and a liquid crystal layer. The first substrate may be an upper substrate or a TFT array substrate. For example, the first substrate may include a pixel array (or display portion or display area), which includes a plurality of pixels disposed in a pixel area composed of a plurality of gate lines and / or a plurality of data lines. Each of the plurality of pixels may include a TFT connected to the gate lines and / or data lines, a pixel electrode connected to the TFT, and a common electrode formed adjacent to the pixel electrode and provided with a common voltage.

[0100] The first substrate may further include a pad portion disposed on its first edge (or non-display portion) and a gating drive circuit disposed on its second edge (or second non-display portion).

[0101] The pad portion can provide externally supplied signals to the pixel array portion and / or the gating drive circuitry. For example, the pad portion may include multiple data pads connected to multiple data lines via multiple data link lines and / or multiple gating input pads connected to the gating drive circuitry via gating control signal lines. For example, the size of the first substrate may be larger than the size of the second substrate, but the terminology is not limited thereto.

[0102] The gating drive circuit can be embedded (or integrated) into the second edge of the first substrate to connect to multiple gating lines. For example, the gating drive circuit can be implemented using a shift register that includes transistors formed using the same process as the TFTs disposed in the pixel region. According to another embodiment of this disclosure, the gating drive circuit may not be embedded in the first substrate and can be disposed in the panel drive circuit as an IC.

[0103] The second substrate can be a lower substrate or a color filter array substrate. For example, the second substrate may include a pixel pattern (or pixel definition pattern) capable of including an opening region overlapping with a pixel region formed in the first substrate and a color filter layer formed in the opening region. The size of the second substrate may be smaller than the size of the first substrate, but embodiments of this disclosure are not limited thereto. The second substrate may overlap with a portion of the first substrate other than the first edge. The second substrate may be bonded to a portion of the first substrate other than the first edge using a sealant, with a liquid crystal layer located therebetween.

[0104] A liquid crystal layer may be disposed between a first substrate and a second substrate. The liquid crystal layer may include liquid crystal, wherein the alignment orientation of the liquid crystal molecules is changed based on an electric field generated by the data voltage applied to the pixel electrode of each pixel and a common voltage.

[0105] The second polarizing member can be attached to the bottom surface of the second substrate and can polarize the light incident from the backlight and propagating to the liquid crystal layer. The first polarizing member can be attached to the top surface of the first substrate and can polarize the light that passes through the first substrate and is released to the outside.

[0106] According to one embodiment of the present disclosure, the vibrating member 100 can drive the liquid crystal layer using an electric field generated by the data voltage and common voltage applied to each pixel, thereby displaying an image based on light passing through the liquid crystal layer.

[0107] In another embodiment of the vibrating member 100 according to the present disclosure, the first substrate may be a color filter array substrate, and the second substrate may be a TFT array substrate. For example, the vibrating member 100 according to another embodiment of the present disclosure may be in the form where the vibrating member 100 according to one embodiment of the present disclosure is vertically flipped. In this case, the pad portion of the vibrating member 100 according to another embodiment of the present disclosure may be covered by a separate mechanism.

[0108] According to another embodiment of the present disclosure, the vibration member 100 may include a bending portion, which is bent or curved to have a specific radius of curvature or curved shape.

[0109] The bending portion of the vibrating member 100 can be implemented at one or more of its parallel edge portions and other edge portions. However, this disclosure is not limited thereto; for example, the bending portion of the vibrating member 100 can be implemented at at least one of all edge portions of the vibrating member. One edge portion and another edge portion of the vibrating member 100 implementing the bending portion may only include the non-display area IA, or may include the edge portions of both the non-display area IA and the display area AA. The vibrating member 100 including the bending portion implemented by bending the non-display area IA may have a single-sided bend structure, a double-sided bend structure, or even a full-sided bend structure. Furthermore, the vibrating member 100 including the bending portion implemented by bending the edge portions of both the non-display area IA and the display area AA may have a single-sided active bending structure, a double-sided active bending structure, or even a full-sided active bending structure.

[0110] Vibration device 200 can vibrate vibration member 100 at the rear surface of vibration member 100, thereby providing sound and / or tactile feedback to a user based on the vibration of vibration member 100. Vibration device 200 can be implemented on the rear surface of vibration member 100 to directly vibrate vibration member 100. For example, vibration device 200 can be a vibration generating device, displacement device, sound device, or sound generating device, but the terminology is not limited thereto.

[0111] In one embodiment of this disclosure, the vibration device 200 may vibrate based on a vibration drive signal synchronized with an image displayed on the vibration member 100, thereby vibrating the vibration member 100. According to another embodiment of this disclosure, the vibration device 200 may vibrate based on a haptic feedback signal (or tactile feedback signal) synchronized with a user touch applied to a touch panel (or touch sensor layer) disposed at or embedded in the vibration member 100, thereby vibrating the vibration member 100. Therefore, the vibration member 100 may vibrate based on the vibration of the vibration device 200 to provide one or more of auditory and haptic feedback to a user (or viewer). However, the embodiments are not limited to this. For example, the vibration drive signal may not be synchronized with an image displayed on the vibration member 100. Similarly, the haptic feedback signal (or tactile feedback signal) may not be synchronized with a user touch applied to a touch panel.

[0112] The vibration device 200 can vibrate the display panel or the vibration member 100. For example, the vibration device 200 can be implemented on the rear surface of the vibration member 100 to directly vibrate the display panel or the vibration member 100. For example, the vibration device 200 can vibrate the vibration member 100 at the rear surface of the display panel or the vibration member 100, thereby providing sound and tactile feedback to the user (or viewer) based on the vibration of the display panel or the vibration member 100.

[0113] According to one embodiment of this disclosure, the vibration device 200 can be implemented as a thin-film type. Because the vibration device 200 is implemented as a thin-film type, the vibration device 200 can have a thinner thickness than the vibrating member 100, thereby minimizing the increase in device thickness caused by the arrangement of the vibration device 130. For example, the vibration device 200 can be referred to as a sound generating module, a sound generating device, a vibration generating device, a displacement device, a sound device, a thin-film actuator, a thin-film piezoelectric composite actuator, a thin-film loudspeaker, a thin-film piezoelectric loudspeaker, or a thin-film piezoelectric composite loudspeaker, which uses a display panel or the vibrating member 100 as a vibrating plate or a sound vibrating plate, but the terminology is not limited thereto.

[0114] The vibration device 200 according to one embodiment of this disclosure may include a ceramic-based material for generating relatively high vibrations, or may include a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have a piezoelectric effect and / or an inverse piezoelectric effect, and may be 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 part 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.

[0115] In perovskite crystal structures, the position of the central ion can be altered by external stress or a magnetic field, thereby changing the polarization and generating a piezoelectric effect based on this change in 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, thus producing a piezoelectric effect. For example, in perovskite crystal structures, by using external stress or a magnetic field, a cubic shape with a symmetrical structure can be changed into a tetragonal, orthorhombic, or rhombic shape, all with asymmetrical structures, thereby generating a piezoelectric effect. The polarization may be higher at the quasi-isomorphic phase boundaries (MPBs) of the tetragonal and rhombic structures, and the polarization can be easily rearranged to obtain high piezoelectric properties.

[0116] According to one embodiment of this disclosure, the vibration device 200 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.

[0117] According to another embodiment of this disclosure, the vibration device 200 may include monocrystalline ceramics and / or polycrystalline ceramics. Monocrystalline ceramics may be materials in which particles having a specific structure are regularly arranged. Polycrystalline ceramics may include irregular particles in which various crystal domains are disposed.

[0118] According to another embodiment of this disclosure, the vibration device 200 may include a lead zirconate titanate (PZT)-based material containing lead (Pb), zirconium (Zr), and titanium (Ti); or it may include a nickel zirconate niobate lead zirconate niobate (PZNN)-based material containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of this disclosure are not limited thereto. According to another embodiment of this disclosure, the vibration device 200 may include one or more of calcium titanate (CaTiO3), BaTiO3, and SrTiO3, none of which contain Pb, but the embodiments of this disclosure are not limited thereto.

[0119] According to another embodiment of this disclosure, the vibration device 200 may have a piezoelectric deformation coefficient "d" of 1000 pC / N or greater in the thickness direction Z. 33 "Through the high voltage electric deformation coefficient "d" 33 This can provide vibration devices applicable to large-sized display panels or vibrating components (or vibrating objects), or vibration devices with sufficient vibration or piezoelectric characteristics. For example, to have a high-voltage deformation coefficient "d 33 The inorganic material component may include PZT-based materials (PbZrTiO3) as the main component, and may include softening agent doped materials doped to the A site (Pb) and relaxor ferroelectric materials doped to the B site (ZrTi).

[0120] Softener doping materials can enhance the piezoelectric and dielectric properties of the vibrating device 200. For example, softener doping materials can increase the piezoelectric deformation coefficient "d" of the inorganic material portion. 33 According to one embodiment of this disclosure, the softener dopant material may include divalent elements "+2" to trivalent elements "+3". By adding the softener dopant material to the PZT-based material (PbZrTiO3), a quasi-isomorphic phase boundary (MPB) can be achieved, thereby enhancing piezoelectric and dielectric properties. For example, the softener dopant material may include strontium (Sr), barium (Ba), lanthanum (La), neodymium (Nd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For example, the softener dopant ions doped into the PZT-based material (PbZrTiO3) (e.g., Sr...) 2+ Ba 2+ La 2+ 、Nd 3+ Ca 2+ Y 3+ Er3+ and Yb 3+ This substance can replace a portion of the lead (Pb) in PZT-based materials (PbZrTiO3), and the replacement rate can be from about 2 mol% to about 20 mol%. For example, when the replacement rate is less than 2 mol% or greater than 20 mol%, the perovskite crystal structure may be destroyed, thus affecting the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d". 33 "It may be reduced. When the softener dopant replaces lead, MPB can be formed, and the piezoelectric and dielectric properties of MPB can be high, thereby realizing a vibrating device with high piezoelectric and high dielectric properties."

[0121] According to one embodiment of this disclosure, relaxor ferroelectric materials doped into PZT-based materials (PbZrTiO3) can enhance the electrical deformation properties of the inorganic material portion. The relaxor ferroelectric materials according to one embodiment of this disclosure may include PMN-based materials, PNN-based materials, PZN-based materials, or PIN-based materials, but the embodiments of this disclosure are not limited thereto. PMN-based materials may include Pb, Mg, and Nb, and may include, for example, Pb(Mg,Nb)O3. PNN-based materials may include Pb, Ni, and Nb, and may include, for example, Pb(Ni,Nb)O3. PZN-based materials may include Pb, Zr, and Nb, and may include, for example, Pb(Zn,Nb)O3. PIN-based materials may include Pb, In, and Nb, and may include, for example, Pb(In,Nb)O3. For example, relaxor ferroelectric materials doped into PZT-based materials (PbZrTiO3) can replace a portion of each of the zirconium (Zr) and titanium (Ti) in the PZT-based materials (PbZrTiO3), and the replacement rate can be from about 5 mol% to about 25 mol%. For example, when the replacement rate is less than 5 mol% or greater than 25 mol%, the perovskite crystal structure may be destroyed, and therefore, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d" will be affected. 33 "It may decrease."

[0122] According to one embodiment of this disclosure, the vibration device 200 may further include donor materials doped into the B-sites (ZrTi) of the PZT-based material (PbZrTiO3) to further improve the piezoelectric coefficient. For example, the donor materials doped into the B-sites (ZrTi) may include tetravalent elements "+4" or hexavalent elements "+6". For example, the donor materials doped into the B-sites (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), bismuth (Bi), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0123] According to one embodiment of the present disclosure, the vibration device 200 may have a piezoelectric deformation coefficient "d" of 1000 pC / N or greater in the thickness direction Z.33 This allows for the creation of vibration devices with enhanced vibration characteristics. For example, vibration devices with enhanced vibration characteristics can be implemented in equipment or vibrating objects with large areas.

[0124] According to another embodiment of this disclosure, the vibration device 200 may not be disposed on the rear surface of the vibration member 100, and may be applied to a non-display panel instead of a display panel. For example, the non-display panel may be one or more of the following: wood, plastic, glass, metal, cloth, fiber, rubber, paper, leather, interior materials of vehicles, interior ceilings of buildings, and interior materials of aircraft; however, embodiments of this disclosure are not limited thereto. In this case, the non-display panel may be used as a vibrating plate, and the vibration device 200 may vibrate the non-display panel to output sound.

[0125] For example, an apparatus according to one embodiment of this disclosure may include a vibrating member (or a vibrating object) and a vibrating device 200 disposed in the vibrating member. For example, the vibrating member may include a display panel containing pixels for displaying images, or it may include a non-display panel. For example, the vibrating member may include a display panel containing pixels for displaying images, or it may be one or more of the following: wood, plastic, glass, metal, cloth, fiber, rubber, paper, leather, mirror, vehicle interior material, vehicle window, building interior ceiling, 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 may include one or more of the following: a display panel containing pixels for displaying images, a screen panel on which images are 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, aircraft interior material, aircraft window, and mirror, but embodiments of this disclosure are not limited thereto. For example, the non-display panel may be 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 (OLED) lighting panel (or device), but the embodiments of this disclosure are not limited thereto. For example, the vibrating member may include a display panel containing pixels for displaying images, or may be one or more of 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 (OLED) lighting panel (or device), but the embodiments of this disclosure are not limited thereto.

[0126] According to another embodiment of this disclosure, the vibrating member may include a plate. The plate may include a metallic material, or may include a single non-metallic material or a composite non-metallic material (including one or more of metal, wood, plastic, glass, cloth, fiber, rubber, paper, mirror, and leather), but the embodiments of this disclosure are not limited thereto. For example, the paper may be a cone paper for a loudspeaker. For example, the cone paper may be pulp or foam plastic, but the embodiments of this disclosure are not limited thereto. For example, the vibrating member may be a vibrating object, a vibrating plate, or a front member, but the embodiments of this disclosure are not limited thereto.

[0127] According to one embodiment of the present disclosure, the vibration device 200 can be disposed on the rear surface of the vibration member 100 to overlap with the display area of ​​the vibration member 100. For example, the vibration device 200 can overlap with half or more of the display area corresponding to the display area of ​​the vibration member 100. According to another embodiment of the present disclosure, the vibration device 200 can overlap with the entire display area of ​​the vibration member 100.

[0128] When an alternating current (AC) voltage is applied, the vibration device 200 according to one embodiment of the present disclosure can alternately contract and expand based on the inverse piezoelectric effect, and can vibrate the vibration member 100 based on vibration. According to one embodiment of the present disclosure, the vibration device 130 can vibrate based on an audio signal synchronized with an image displayed on a display panel to vibrate the vibration member 100. According to another embodiment of the present disclosure, the vibration device 200 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 vibration member 100, thereby vibrating the vibration member 100. Therefore, the vibration member 100 can vibrate based on the vibration of the vibration device 200 to provide one or more of auditory and tactile feedback to a user (or viewer).

[0129] Therefore, the device according to one embodiment of the present disclosure can output sound generated by the vibration of the vibrating member 100 based on the vibration of the vibrating device 200 in the forward direction of the vibrating member 100. Furthermore, the device according to one embodiment of the present disclosure can further enhance the sound localization and sound pressure level characteristics based on the vibration of the vibrating member 100 by using a thin-film type vibrating device 200 to vibrate a large area of ​​the vibrating member 100.

[0130] According to one embodiment of this disclosure, the rear surface (or back surface) of the vibrating member 100 may include a first region (or first rear region) A1 and a second region (or second rear region) A2. For example, on the rear surface of the vibrating member 100, the first region A1 may be a left rear region, and the second region A2 may be a right rear region. The first region A1 and the second region A2 may be horizontally symmetrical about the centerline CL of the vibrating member 100 with respect to a first direction X, but embodiments of this disclosure are not limited thereto. For example, each of the first region A1 and the second region A2 may overlap with a display area of ​​the vibrating member 100.

[0131] According to one embodiment of the present disclosure, the vibration device 200 may include a first vibration device 130-1 and a second vibration device 130-2 disposed on the rear surface of the vibration member 100.

[0132] The first vibration device 130-1 may be disposed in the first region A1 of the vibration member 100. For example, the first vibration device 130-1 may be disposed near the center portion or edge of the first region A1 of the vibration member 100 relative to the first direction X. According to one embodiment of the present disclosure, the first vibration device 130-1 may vibrate the first region A1 of the vibration member 100, thereby generating a first vibration sound PVS1 or a first tactile feedback in the first region A1 of the vibration member 100. For example, according to one embodiment of the present disclosure, the first vibration device 130-1 may directly vibrate the first region A1 of the vibration member 100, thereby generating a first vibration sound PVS1 or a first tactile feedback in the first region A1 of the vibration member 100. For example, the first vibration sound PVS1 may be a left-hand sound. The size of the first vibration device 130-1 according to an embodiment of the present disclosure may be half or less, or half or more, the size of the first region A1, based on the characteristics of the first vibration sound PVS1 or the desired sound characteristics of the device. In another embodiment of the present disclosure, the size of the first vibration device 130-1 may correspond to the size of the first region A1 of the vibration member 100. For example, the size of the first vibration device 130-1 may be smaller than or equal to the size of the first region A1 of the vibration member 100.

[0133] The second vibration device 130-2 can be disposed in the second region A2 of the vibration member 100. For example, the second vibration device 130-2 can be disposed near the center portion or edge of the second region A2 of the vibration member 100 relative to the first direction X. According to one embodiment of the present disclosure, the second vibration device 130-2 can vibrate the second region A2 of the vibration member 100, thereby generating a second vibration sound PVS2 or a second tactile feedback in the second region A2 of the vibration member 100. For example, according to one embodiment of the present disclosure, the second vibration device 130-2 can directly vibrate the second region A2 of the vibration member 100, thereby generating a second vibration sound PVS2 or a second tactile feedback in the second region A2 of the vibration member 100. For example, the second vibration sound PVS2 can be a right sound. The size of the second vibration device 130-2 according to one embodiment of the present disclosure can be half or less, or half or more, the size of the second region A2, based on the characteristics of the second vibration sound PVS2 or the desired sound characteristics of the device. In another embodiment of the present disclosure, the size of the second vibration device 130-2 can be the size corresponding to the second region A2 of the vibration member 100. For example, the size of the second vibration device 130-2 can be smaller than or equal to the size of the second region A2 of the vibration member 100. Therefore, based on the left-right sound characteristics and / or the overall sound characteristics of the device, the first vibration device 130-1 and the second vibration device 130-2 can have the same size or different sizes. Furthermore, the first vibration device 130-1 and the second vibration device 130-2 can be configured as a left-right symmetrical structure or a left-right asymmetrical structure relative to the center line CL of the vibration member 100.

[0134] Each of the first vibration device 130-1 and the second vibration device 130-2 may include a piezoelectric structural material (vibrating portion or piezoelectric vibrating portion), which includes piezoelectric ceramics with piezoelectric properties, but the embodiments of this disclosure are not limited thereto. For example, each of the first vibration device 130-1 and the second vibration device 130-2 according to one embodiment of this disclosure may include a piezoelectric ceramic having a perovskite crystal structure, thereby being able to vibrate (or mechanically displace) in response to an externally applied electrical signal. For example, when a vibration drive signal (or voice signal) is applied, each of the first vibration device 130-1 and the second vibration device 130-2 may alternately and repeatedly contract and expand based on the inverse piezoelectric effect of the piezoelectric structural material (vibrating portion or piezoelectric vibrating portion), thereby being able to displace (or vibrate) in the same direction based on a bending phenomenon with alternating bending directions, thereby increasing or maximizing the displacement (or bending force) or amplitude displacement of the vibration device 200 and / or the vibration member 100.

[0135] The vibrations generated by each of the first vibration device 130-1 and the second vibration device 130-2 can cause the entire first region (or first rear region) A1 and the second region (or second rear region) A2 to vibrate, thereby enhancing user satisfaction and improving the sound localization. Furthermore, the contact area (or panel coverage) between the vibrating member 100 and each of the first vibration device 130-1 and the second vibration device 130-2 can be increased, thus increasing the vibration area of ​​the vibrating member 100 and enhancing the mid-to-low pitch sound generated by the vibration of the vibrating member 100. Moreover, the vibration device 200 applied to a large-size device can vibrate all vibrating members 100 with a large size (or large area), thus further enhancing the sound localization based on the vibration of the vibrating member 100, thereby achieving enhanced sound effects. Therefore, the vibration device 200 according to one embodiment of this disclosure can be disposed at the rear surface of the vibrating member 100 to fully vibrate the vibrating member 100 in the vertical direction (or forward and backward directions), thereby outputting the desired sound in the forward direction of the vibrating member 100 or the display device or the device. For example, the vibration device 200 may be disposed on the rear surface of the vibration member 100 to fully vibrate the vibration member 100 in a direction perpendicular to the first direction X (or in the forward and backward directions), thereby outputting a desired sound in the forward direction of the vibration member 100 or the display device or apparatus.

[0136] According to one embodiment of the present disclosure, the vibration device 200 may further include a connecting member 150. For example, the connecting member 150 may be disposed between the vibration device 200 and the vibration member 100. For example, the connecting member 150 may be disposed between each of the first vibration device 130-1 and the second vibration device 130-2 and the vibration member 100.

[0137] The connecting member 150 may be disposed between the first vibration device 130-1 and the second vibration device 130-2 and the vibration member 100. For example, the vibration device 200 may be connected or coupled to the rear surface of the vibration member 100 by the connecting member 150, so that it may be supported by or disposed at the rear surface of the vibration member 100.

[0138] According to another embodiment of this disclosure, the connecting member 150 may further include a hollow portion disposed between the vibrating device 200 and the vibrating member 100. The hollow portion of the connecting member 150 can provide an air gap between the vibrating device 200 and the vibrating member 100. Based on this air gap, the sound waves (or sound pressure levels) generated by the vibration of the vibrating device 200 are not dispersed by the connecting member 150 but are concentrated on the vibrating member 100. Therefore, the loss of vibration based on the connecting member 150 can be minimized, thereby improving the sound pressure level characteristics and / or sound characteristics of the sound generated by the vibration of the vibrating member 100.

[0139] The device according to one embodiment of the present disclosure may further include a connecting member 150 (or a first connecting member) located between the vibration device 200 and the vibration member 100 or the display panel.

[0140] For example, the connecting member 150 can be disposed between the vibrating device 200 and the rear surface of the vibrating member 100 or the display panel, thus allowing the vibrating device 200 to be connected or coupled to the rear surface of the vibrating member 100. For example, the vibrating device 200 can be connected or coupled to the rear surface of the vibrating member 100 or the display panel using the connecting member 150, thus allowing it to be supported by or disposed at the rear surface of the vibrating member 100. For example, the vibrating device 200 can be disposed at the rear surface of the vibrating member 100 or the display panel using the connecting member 150.

[0141] According to one embodiment of this disclosure, the connecting member 150 may include a material comprising an adhesive layer that provides good adhesion or bonding to each of the rear surfaces of the vibrating device 200 and the vibrating member 100. For example, the connecting member 150 may include a foam pad, double-sided tape, or adhesive, but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include epoxy resin, acrylic resin, silicone resin, or polyurethane, but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include an acrylic-based material that has good adhesion and high hardness in acrylic resins and polyurethanes. Therefore, vibrations from the vibrating device 200 can be well transmitted to the vibrating member 100.

[0142] The adhesive layer of the connecting member 150 may also include additives such as tackifiers, wax components, or antioxidants, but embodiments of the present disclosure are not limited thereto. Additives can prevent the connecting member 150 from detaching (peeling off) from the vibrating member 100 due to vibration of the vibrating device 200. For example, the tackifier may be a rosin derivative, the wax component may be paraffin wax, and the antioxidant may be a phenolic antioxidant such as a thiol ester, but embodiments of the present disclosure are not limited thereto.

[0143] According to another embodiment of this disclosure, the connecting member 150 may further include a hollow portion disposed between the vibrating device 200 and the vibrating member 100. The hollow portion of the connecting member 150 may provide an air gap between the vibrating device 200 and the vibrating member 100 or the display panel. Based on this air gap, the sound waves (or sound pressure level) generated by the vibration of the vibrating device 200 may not be dispersed by the connecting member 150, but rather concentrated on the vibrating member 100 or the display panel. Therefore, the loss of vibration based on the connecting member 150 can be minimized, thereby improving the sound pressure level characteristics and / or sound characteristics of the sound generated by the vibration of the vibrating member 100.

[0144] According to one embodiment of the present disclosure, the device 10 may further include a support member 300 disposed on the rear surface (or back side) of the vibrating member 100.

[0145] The support member 300 may be disposed on the rear surface of the vibrating member 100 or the display panel. For example, the support member 300 may cover the entire rear surface of the vibrating member 100 or the display panel. For example, the support member 300 may include one or more of glass, metal, and plastic materials. For example, the support member 300 may be a rear structural material, a setting structural material, a supporting structural material, a support cover, a rear member, a housing, or an outer shell, but the terminology is not limited thereto. The support member 300 may be referred to by other terms, such as cover bottom, plate bottom, rear cover, base frame, metal frame, metal chassis, chassis base, or m-chassis. For example, the support member 300 may be implemented as any type of frame or plate structural material disposed on the rear surface of the vibrating member 100.

[0146] The edges or sharp corners of the support member 300 can be beveled or rounded to have an inclined or curved shape. For example, the glass material of the support member 300 can be sapphire glass. In another embodiment of this disclosure, the support member 300, which includes a metallic material, can include one or more of aluminum (Al), Al alloys, magnesium (Mg) alloys, and iron (Fe)-nickel (Ni) alloys.

[0147] The device according to one embodiment of this disclosure may further include an intermediate frame 400. The intermediate frame 400 may be disposed between the rear edge of the display panel or vibrating member 100 and the front edge of the support member 300. The intermediate frame 400 may support one or more edge portions of the vibrating member 100 and the support member 300. The intermediate frame 400 may surround one or more side surfaces of each of the vibrating member 100 and the support member 300. The intermediate frame 400 may provide a clearance space GS between the display panel and the support member 300. The intermediate frame 400 may be referred to as an intermediate housing, intermediate cover, intermediate chassis, connecting member, frame, frame member, intermediate member, or side cover member, but the terminology is not limited thereto.

[0148] An intermediate frame 400 according to one embodiment of the present disclosure may include a first support portion 410 and a second support portion 430. For example, the first support portion 410 may be a support portion, but the terminology is not limited thereto. For example, the second support portion 430 may be a sidewall portion, but the terminology is not limited thereto.

[0149] The first support portion 410 can be disposed between the rear edge of the vibrating member 100 and the front edge of the support member 300, thus providing a gap space GS between the vibrating member 100 and the support member 300. The front surface of the first support portion 410 can be connected or attached to the rear edge of the vibrating member 100 via the first adhesive member 401. The rear surface of the first support portion 410 can be connected or attached to the front edge of the support member 300 via the second adhesive member 403. For example, the first support portion 410 can have a single frame structure in the shape of a quadrilateral or a frame structure in the form of multiple dividing strips, but the embodiments of this disclosure are not limited thereto.

[0150] The second support portion 430 may be arranged parallel to the thickness direction Z of the device. For example, the second support portion 430 may be perpendicularly connected to the outer surface of the first support portion 410, parallel to the thickness direction Z of the device. The second support portion 430 may surround one or more of the outer surfaces of the vibrating member 100 and the support member 300, thereby protecting the outer surface of each of the vibrating member 100 and the support member 300. The first support portion 410 may protrude from the inner surface of the second support portion 430 into the gap space GS between the vibrating member 100 and the support member 300.

[0151] An embodiment of the device according to this disclosure may include a panel connecting member (or connecting member) in place of the intermediate frame 400.

[0152] A panel connecting member can be disposed between the rear edge of the vibrating member 100 and the front edge of the support member 300, thus providing a gap space GS between the vibrating member 100 and the support member 300. The panel connecting member can be disposed between the rear edge of the vibrating member 100 and the front edge of the support member 300, and can attach the vibrating member 100 to the support member 300. For example, the panel connecting member can be implemented using double-sided tape, single-sided tape, or double-sided adhesive foam pads, but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the panel connecting member can include epoxy resin, acrylic resin, silicone resin, or polyurethane, but embodiments of this disclosure are not limited thereto. For example, to minimize the transmission of vibration from the vibrating member 100 to the support member 300, the adhesive layer of the panel connecting member can include a polyurethane-based material, which has relatively more malleable properties compared to acrylic resin among acrylic resins and polyurethanes. Therefore, the vibration of the display panel transmitted to the support member 300 can be minimized.

[0153] According to another embodiment of this disclosure, in the device according to one embodiment of this disclosure, the intermediate frame 400 may be omitted. Instead of the intermediate frame 400, a panel connecting member or adhesive may be provided. According to another embodiment of this disclosure, instead of the intermediate frame 400, a separator may be provided.

[0154] Reference Figure 2A , Figure 2B , Figure 3 and Figure 4 The curved support member 170 can be disposed between the vibrating member 100 and the vibrating device 200, and can include a first surface adjacent to the vibrating device 200 and a second surface opposite to the first surface, and the first surface can have a surface different from the second surface. For example, the first surface can be a curved surface, while the second surface can be a plane (or a flat surface). For example, the curved support member 170 can be a curved structure, but the terminology is not limited thereto.

[0155] The first surface of the curved support member 170 may have a specific curvature R, and the bending direction of the first surface of the curved vibrating device 130-1 may be parallel to, for example, a second direction or a Y direction. Furthermore, the bending direction of the first surface of the curved vibrating device 130-1 may be parallel to, for example, a first direction or an X direction, or may be parallel to an undetermined direction.

[0156] According to one embodiment of this disclosure, the curvature "R" value of the first surface of the curved support member 170 can be from 300R to 4000R. When the curvature "R" of the first surface of the curved support member 170 is less than 300R, damage may occur due to the rapid deformation of the vibration portion 131a described below. Furthermore, when the curvature "R" of the first surface of the curved support member 170 is greater than 4000R, the degree of curvature of the first surface of the curved support member 170 may be smaller, and the vibration component of the vibration device 200 (e.g., d) may also be less. 31 and d 33 The contribution of this component to vibration may be relatively low. Therefore, the sound pressure level characteristics of the equipment may not be significantly improved.

[0157] According to one embodiment of this disclosure, the maximum distance “d” between the first and second surfaces of the curved support member 170 can be from 0.45 mm to 6 mm.

[0158] Here, as Figure 3 As shown, in the device according to this disclosure, the maximum distance "d" between the first surface and the second surface of the curved support member 170 can be the thickness of the center (or middle) of the first surface having a curved surface in the second direction (or Y direction) and the center (or middle) of the second surface in the second direction (or Y direction), or it can be the separation distance between them. For example, when the first surface of the curved support member 170 is formed as a curved surface, the first surface of the curved support member 170 can have a maximum distance at the center (or middle) in the second direction (or Y direction), and can have a distance that gradually decreases from the maximum distance in the direction away from the center (or middle) in the second direction (or Y direction). For example, at both ends of the curved support member 170, the thickness or separation distance between the first surface and the second surface can be 0. For example, the first surface and the second surface of the curved support member 170 can be a structure in which the first surface contacts the second surface at both ends of the curved support member 170. Furthermore, as described above, the maximum distance “d” between the first and second surfaces of the curved support member 170 can be the center (or middle) in an undetermined direction, rather than the center (or middle) in the second direction (or Y direction).

[0159] When the maximum distance "d" between the first and second surfaces of the curved support member 170 is greater than 6 mm, damage may occur due to the rapid deformation of the vibrating part 131a described below. Furthermore, when the maximum distance "d" between the first and second surfaces of the curved support member 170 is less than 0.45 mm, the curvature of the first surface of the curved support member 170 may be less, and the vibration component of the vibrating device 200 (e.g., d) may also be less. 31 and d 33The contribution of this component to vibration may be relatively low. Therefore, the sound pressure level characteristics of the equipment may not be significantly improved. Figure 2A As shown, in the first surface of the curved support member 170, the section cut along the line A-A' parallel to the first direction (or the X direction) can have a specific height (or a constant height), and therefore can be displayed as a quadrilateral shape.

[0160] Therefore, the first surface of the support member 170 can be formed to have a specific curvature "R" in at least one direction, and can be formed to have a specific height in a direction perpendicular to the at least one direction.

[0161] The curved support member 170 may include one or more of wood, plastic, polymer, glass, metal, cloth, fiber, rubber, paper, and leather. When the curved support member 170 includes a metal, it may include one or more of aluminum, aluminum alloy, magnesium, magnesium alloy, and iron-nickel (Fe-Ni) alloy. When the curved support member 170 includes a plastic or polymer, it may include a relatively rigid material (e.g., acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), or a compound of PC and ABS), or it may include a relatively soft polymer (e.g., synthetic rubber, natural rubber, silicone, or various elastomer materials).

[0162] According to one embodiment of this disclosure, a vibration device 200 disposed on the rear surface of the first surface of the curved support member 170 may have a shape corresponding to the curvature of the first surface. Here, the vibration device 200 may induce additional stress and deformation based on the direction of the electric field. Therefore, the vibration device 200 may be directional. In this case, d 33 It can be the piezoelectric charge constant that causes deformation in a specific direction (one direction) of the vibrating device 200 when an electric field is applied in one direction. For example, d 33 It can be the piezoelectric charge constant (or piezoelectric constant) that causes deformation in the third direction (or Z direction) of the vibrating device 200 when an electric field is applied in the third direction (or Z direction). Furthermore, d 31 It can be the piezoelectric charge constant that deforms in different directions when an electric field is applied in one direction. For example, d 31 It can be the piezoelectric charge constant (or piezoelectric constant) that deforms in different directions (e.g., a first direction or a second direction) when an electric field is applied in a third direction (or the Z direction). Figure 3 In the vibrating device 200, the piezoelectric charge constant "d" is shown. 33 "and piezoelectric charge constant "d 31 ".exist Figure 3 In the piezoelectric charge constant "d"33 "This can represent the stress occurring in a third direction perpendicular to the plane of the vibrating device 130-1, and the piezoelectric charge constant "d 31 "This can represent stress occurring in a second direction parallel to the plane of the vibrating device 130-1. Therefore, in the following text, the piezoelectric charge constant "d" 33 "It can be the stress component perpendicular to the plane of the vibrating device 130-1, and the piezoelectric charge constant "d 31 "This can indicate that stress occurs in a second direction parallel to the plane of the vibrating device 130-1."

[0163] Therefore, in the following description, the piezoelectric charge constant "d" 33 "It can be the stress component or vibration component in the vertical direction of the vibrating device 200, and the piezoelectric charge constant "d 31 "It can be the stress component or vibration component in the horizontal direction of the vibrating device 200."

[0164] Therefore, when the first and second surfaces of the vibration device 200 are formed to have such Figure 3 When the surface or specific curvature is shown, the vibration component "d" of the vibrating device 200 in the horizontal direction 31 "It can be transmitted to the vibrating member 100 in the direction facing the vibrating member 100 or the connecting member 150 on the first and second transverse surfaces of the vibrating device 200, thus enhancing the vibration characteristics of the device and the sound pressure level generated by the device. On the other hand, for example, the horizontal vibration component of the vibrating device 200 excluding the curved support member..." 31 "It may be offset, so the sound pressure level may not be enhanced compared to the embodiments of this disclosure."

[0165] In one embodiment of the device according to this disclosure, one surface and another surface of the vibration device 130-1 can be adhered to or connected to the vibration member 100 using a connecting member 150. One surface 200a and another surface 200b of the vibration device 130-1 can be attached to the vibration member 100 using the connecting member 150, thus the stress components and / or vibration components "d" appearing on one surface and the other surface of the vibration device 130-1... 31 "It can help increase the sound pressure level."

[0166] Figure 5 This is a plan view of a vibration device according to one embodiment of the present disclosure, and Figure 6 It is along Figure 5 Cross-sectional view of the centerline CC′.

[0167] Reference Figures 5 to 6According to one embodiment of the present disclosure, the vibration device 200 may include a vibration device 131, which includes a vibration part 131a, a first electrode part 131b, and a second electrode part 131c.

[0168] The vibration device 131 according to one embodiment of the present disclosure may be referred to as a flexible vibration structure material, a flexible vibrator, a flexible vibration generating device, a flexible vibration generator, a flexible sound generator, a flexible sound device, a flexible sound generating device, a flexible sound generator, a flexible actuator, a flexible loudspeaker, a flexible piezoelectric loudspeaker, a thin film actuator, a thin film type piezoelectric composite actuator, a thin film loudspeaker, a thin film type piezoelectric loudspeaker, or a thin film type piezoelectric composite loudspeaker, but the terminology is not limited thereto.

[0169] The vibrating portion 131a may include a piezoelectric material. For example, the vibrating portion 131a may include a piezoelectric material (or an electroactive material) exhibiting a piezoelectric effect. For instance, a piezoelectric material may have the property that when pressure or torsion is applied to a crystal structure by an external force, a potential difference is generated due to dielectric polarization caused by changes in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated by an electric field based on a voltage applied to the piezoelectric material. The vibrating portion 131a may be referred to by terms such as vibrating layer, piezoelectric layer, piezoelectric material layer, electroactive layer, vibrating portion, piezoelectric material portion, electroactive portion, piezoelectric structural material, piezoelectric composite layer, piezoelectric composite, or piezoelectric ceramic composite, but the terminology is not limited thereto. The vibrating portion 131a may include a transparent conductive material, a translucent conductive material, or an opaque conductive material, and may be transparent, translucent, or opaque.

[0170] The vibration portion 131a according to one embodiment of this disclosure may include a ceramic matrix material for generating relatively high vibrations, or may include a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have a piezoelectric effect and / or an inverse piezoelectric effect, and may be 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 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.

[0171] In perovskite crystal structures, the position of the central ion can be altered by external stress or a magnetic field, thus changing the polarization and generating a piezoelectric effect based on this change in 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, thereby producing a piezoelectric effect. For example, in perovskite crystal structures, by using external stress or a magnetic field, a cubic shape with a symmetrical structure can be changed into a tetragonal, orthorhombic, or rhombic shape, all with asymmetrical structures, thus generating a piezoelectric effect. The polarization may be higher at the quasi-isomorphic phase boundaries (MPBs) of the tetragonal and rhombic structures, and the polarization can be easily rearranged to obtain high piezoelectric properties.

[0172] According to one embodiment of the present disclosure, the vibrating part 131a 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 the present disclosure are not limited thereto.

[0173] According to another embodiment of this disclosure, the vibration portion 131a may include monocrystalline ceramic and / or polycrystalline ceramic. Monocrystalline ceramic may be a material in which particles having a specific structure are regularly arranged. Polycrystalline ceramic may include irregular particles in which various crystal domains are disposed.

[0174] According to another embodiment of this disclosure, the vibrating portion 131a may include a lead zirconate titanate (PZT)-based material comprising lead (Pb), zirconium (Zr), and titanium (Ti), or may include a nickel zirconate niobate lead niobate (PZNN)-based material comprising lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the embodiments of this disclosure are not limited thereto. According to another embodiment of this disclosure, the vibrating portion 131a may include a lead magnesium niobate (PMN)-based material, a lead nickel niobate (PNN)-based material, a lead zirconate niobate (PZN)-based material, or a lead indium niobate (PIN)-based material, but the embodiments of this disclosure are not limited thereto. The PMN-based material may include Pb, magnesium (Mg), and Nb, and may be, for example, Pb(Mg,Nb)O3. The PNN-based material may include Pb, Ni, and Nb, and may be, for example, Pb(Ni,Nb)O3. The PIN-based material may include Pb, In, and Nb, and may be, for example, Pb(In,Nb)O3. According to another embodiment of the present disclosure, the vibration part 131a may include one or more of calcium titanate (CaTiO3), BaTiO3 and SrTiO3, none of which contain Pb, but the embodiments of the present disclosure are not limited thereto.

[0175] According to another embodiment of this disclosure, the vibrating portion 131a may have a piezoelectric deformation coefficient of 1000 pC / N or greater in the thickness direction Z. 33"Through the high voltage electric deformation coefficient "d" 33 This can provide vibration devices applicable to large-sized display panels or vibrating components (or vibrating objects), or vibration devices with sufficient vibration or piezoelectric characteristics. For example, to have a high-voltage deformation coefficient "d 33 The inorganic material component may include PZT-based materials (PbZrTiO3) as the main component, and may include softening agent doped materials doped to the A site (Pb) and relaxor ferroelectric materials doped to the B site (ZrTi).

[0176] Softener-doped materials can enhance the piezoelectric and dielectric properties of the vibrating part 131a. For example, softener-doped materials can increase the piezoelectric deformation coefficient "d" of the inorganic material part. 33 According to one embodiment of this disclosure, the softener dopant material may include divalent elements "+2" to trivalent elements "+3". By adding the softener dopant material to the PZT-based material (PbZrTiO3), a quasi-isomorphic phase boundary (MPB) can be achieved, thereby enhancing piezoelectric and dielectric properties. For example, the softener dopant material may include strontium (Sr), barium (Ba), lanthanum (La), neodymium (Nd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For example, the softener dopant ions doped into the PZT-based material (PbZrTiO3) (e.g., Sr...) 2+ Ba 2+ La 2+ 、Nd 3+ Ca 2+ Y 3+ Er 3+ and Yb 3+ It can replace a portion of the lead (Pb) in PZT-based materials (PbZrTiO3), and the replacement rate can be from about 2 mol% to about 20 mol%. For example, when the replacement rate is less than 2 mol% or greater than 20 mol%, the perovskite crystal structure may be destroyed, thus affecting the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d". 33 "It may be reduced. When the softener dopant replaces lead, MPB can be formed, and the piezoelectric and dielectric properties of MPB can be high, thereby realizing a vibrating device with high piezoelectric and high dielectric properties."

[0177] According to one embodiment of this disclosure, relaxor ferroelectric materials doped into PZT-based materials (PbZrTiO3) can enhance the electrical deformation properties of the inorganic material portion. The relaxor ferroelectric materials according to one embodiment of this disclosure may include PMN-based materials, PNN-based materials, PZN-based materials, or PIN-based materials, but the embodiments of this disclosure are not limited thereto. PMN-based materials may include Pb, Mg, and Nb, and may include, for example, Pb(Mg,Nb)O3. PNN-based materials may include Pb, Ni, and Nb, and may include, for example, Pb(Ni,Nb)O3. PZN-based materials may include Pb, Zr, and Nb, and may include, for example, Pb(Zn,Nb)O3. PIN-based materials may include Pb, In, and Nb, and may include, for example, Pb(In,Nb)O3. For example, relaxor ferroelectric materials doped into PZT-based materials (PbZrTiO3) can replace a portion of each of the zirconium (Zr) and titanium (Ti) in the PZT-based materials (PbZrTiO3), and the replacement rate can be from about 5 mol% to about 25 mol%. For example, when the replacement rate is less than 5 mol% or greater than 25 mol%, the perovskite crystal structure may be destroyed, and therefore, the electromechanical coupling coefficient "kP" and the piezoelectric deformation coefficient "d" will be affected. 33 "It may decrease."

[0178] According to one embodiment of this disclosure, the vibrating portion 131a may further include donor material doped into the B-site (ZrTi) of the PZT-based material (PbZrTiO3) to further improve the piezoelectric coefficient. For example, the donor material doped into the B-site (ZrTi) may include a tetravalent element "+4" or a hexavalent element "+6". For example, the donor material doped into the B-site (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), bismuth (Bi), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0179] According to one embodiment of this disclosure, the vibrating portion 131a may have a piezoelectric deformation coefficient of 1000 pC / N or greater in the thickness direction Z. 33 This allows for the creation of vibration devices with enhanced vibration characteristics. For example, vibration devices with enhanced vibration characteristics can be implemented in equipment or vibrating objects with large areas.

[0180] The first electrode portion 131b may be disposed on the first surface (or upper surface) of the vibrating portion 131a and may be electrically connected to the first surface of the vibrating portion 131a. The second electrode portion 131c may be disposed on the second surface (or lower surface) of the vibrating portion 131a and may be electrically connected to the second surface of the vibrating portion 131a. For example, the vibrating portion 131a may be polarized (or bipolarized) by applying a specific voltage to the first electrode portion 131b and the second electrode portion 131c in a specific temperature atmosphere or in a temperature atmosphere that changes from high temperature to room temperature, but the embodiments of this disclosure are not limited thereto.

[0181] For example, the first electrode portion 131b may have a common electrode form disposed on the entire first surface of the vibrating portion 131a. According to one embodiment of this disclosure, the first electrode portion 131b 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), silver (Ag), molybdenum (Mo), or magnesium (Mg) or alloys thereof, but embodiments of this disclosure are not limited thereto.

[0182] The second electrode portion 131c may be disposed on the second surface (or rear surface or back surface) of the vibrating portion 131a opposite to the first surface, and may be electrically connected to the second surface of the vibrating portion 131a. For example, the second electrode portion 131c may have a common electrode form disposed on the entire second surface of the vibrating portion 131a. According to one embodiment of the present disclosure, the second electrode portion 131c may include a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the second electrode portion 131c may include the same material as the first electrode portion 131b, but embodiments of the present disclosure are not limited thereto. In another embodiment of the present disclosure, the second electrode portion 131c may include a material different from the material of the first electrode portion 131b.

[0183] According to another embodiment of this disclosure, the vibration device 131 (or vibration equipment 200) may further include a first cover member 139 and a second cover member 137.

[0184] The first cover member 139 may be disposed on the first surface of the vibration device 131. For example, the first cover member 139 may be disposed on the first electrode portion 131b. For example, the first cover member 139 may be located on the first electrode portion 131b. For example, the first cover member 139 may cover the first electrode portion 131b disposed on the first surface of the vibration portion 131a, thereby protecting the first surface of the vibration portion 131a or the first electrode portion 131b.

[0185] The second cover member 137 may be disposed on the second surface of the vibration device 131. For example, the second cover member 137 may be disposed on the second electrode portion 131c. For example, the second cover member 137 may be located on the second electrode portion 131c. For example, the second cover member 137 may cover the second electrode portion 131c disposed on the second surface of the vibration portion 131a, thereby protecting the second surface of the vibration portion 131a or the second electrode portion 131c.

[0186] Each of the first cover member 139 and the second cover member 137 according to one embodiment of the present disclosure may include one or more materials selected from plastic, fiber, and wood, but the embodiments of the present disclosure are not limited thereto. For example, the first cover member 139 and the second cover member 137 may include the same material or different materials. For example, the first cover member 139 and the second cover member 137 may be a polyimide film or a polyethylene terephthalate film, but the embodiments of the present disclosure are not limited thereto.

[0187] According to another embodiment of this disclosure, the vibration device 131 (or vibration apparatus 200) may further include a first adhesive layer 135 and a second adhesive layer 133. For example, the first adhesive layer 135 may be disposed between the first cover member 139 and the first electrode portion 131b. For example, the second adhesive layer 133 may be disposed between the second cover member 137 and the second electrode portion 131c.

[0188] According to one embodiment of this disclosure, a first cover member 139 can be disposed on a first surface of a vibrating portion 131a using a first adhesive layer 135. For example, the first cover member 139 can be connected or coupled to a first electrode portion 131b using the first adhesive layer 135. For example, the first cover member 139 can be disposed on the first surface of a vibrating portion 131a via a thin film lamination process using the first adhesive layer 135. Therefore, the vibrating portion 131a can be provided (or disposed) integrally with the first cover member 139.

[0189] According to one embodiment of this disclosure, the second cover member 137 can be disposed on the second surface of the vibrating portion 131a using a second adhesive layer 133. For example, the second cover member 137 can be connected or coupled to the second electrode portion 131c using the second adhesive layer 133. For example, the second cover member 137 can be disposed on the second surface of the vibrating portion 131a using a thin film lamination process with the second adhesive layer 133. Therefore, the vibrating portion 131a can be provided (or disposed) integrally with the second cover member 137.

[0190] For example, the first adhesive layer 135 and the second adhesive layer 133 may completely surround the vibration device 131. For example, the first adhesive layer 135 and the second adhesive layer 133 may be disposed between the first cover member 139 and the second cover member 137 to surround the vibration portion 131a, the first electrode portion 131b, and the second electrode portion 131c. For example, the first adhesive layer 135 and the second adhesive layer 133 may be disposed between the first cover member 139 and the second cover member 137 to completely surround the vibration portion 131a, the first electrode portion 131b, and the second electrode portion 131c. For example, the vibration portion 131a, the first electrode portion 131b, and the second electrode portion 131c may be buried or embedded between the first adhesive layer 135 and the second adhesive layer 133. For ease of description, the first adhesive layer 135 and the second adhesive layer 133 are shown as first adhesive layer 135 and second adhesive layer 133, but are not limited thereto, and the first adhesive layer 135 and the second adhesive layer 133 may be provided as a single adhesive layer.

[0191] Each of the first adhesive layer 135 and the second adhesive layer 133 according to one embodiment of the present disclosure may include an electrically insulating material having adhesive properties and being capable of compression and decompression. For example, each of the first adhesive layer 135 and the second adhesive layer 133 may include epoxy resin, acrylic resin, silicone resin, and polyurethane resin, but the embodiments of the present disclosure are not limited thereto.

[0192] The vibration device 200 according to one embodiment of the present disclosure may also include a signal cable.

[0193] The signal cable can be electrically connected to a pad portion disposed in the vibration device 200, and can provide the vibration device 200 with a vibration drive signal (or sound signal) provided from the sound processing circuit. According to one embodiment of this disclosure, the signal cable may include terminals, and the terminals can be electrically connected to pad electrodes of the pad portion. For example, the signal cable can be configured as a flexible cable, a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board (PCB), but embodiments of this disclosure are not limited thereto. For example, the signal cable can be configured to be transparent, semi-transparent, or opaque.

[0194] The sound processing circuit can generate an AC vibration drive signal, including a first vibration drive signal and a second vibration drive signal, based on a sound source. The first vibration drive signal can be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal, and the second vibration drive signal can also be one of a positive (+) vibration drive signal and a negative (-) vibration drive signal. For example, the first vibration drive signal can be provided to the first electrode portion 131b of the vibration device 131 through the terminals of the signal cable, the pad electrodes of the pad portion, and the first power line. The second vibration drive signal can be provided to the second electrode portion 131c of the vibration device 131 through the terminals of the signal cable, the pad electrodes of the pad portion, and the second power line.

[0195] According to one embodiment of the present disclosure, the vibration portion 131a may be configured integrally by a first cover member 139 and a second cover member 137, thereby providing a vibration device with a simplified structure and thinness.

[0196] Figure 7A and 7B The structure of the vibration section of a vibration device according to one embodiment of the present disclosure is shown.

[0197] Reference Figure 7A The vibrating part 131a can be disposed in a solid structure without a pattern. In addition, the vibrating part 131a may include the following ceramic-based perovskite material and may have the flexibility to be bent to correspond to the curved first surface of the curved support member 170.

[0198] The vibrating portion 131a may include a ceramic matrix material for generating relatively high vibrations, or may include a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have a piezoelectric effect and / or an inverse piezoelectric effect, and may be 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 vibrating portion 131a 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.

[0199] In perovskite crystal structures, the position of the central ion can be altered by external stress or a magnetic field, thereby changing the polarization and generating a piezoelectric effect based on this change in 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, thus producing a piezoelectric effect. For example, in perovskite crystal structures, by using external stress or a magnetic field, a cubic shape with a symmetrical structure can be changed into a tetragonal, orthorhombic, or rhombic shape, all with asymmetrical structures, thereby generating a piezoelectric effect. The polarization may be higher at the quasi-isomorphic phase boundaries (MPBs) of the tetragonal and rhombic structures, and the polarization can be easily rearranged to obtain high piezoelectric properties.

[0200] The vibrating portion 131a may include a lead zirconate titanate (PZT)-based material containing lead (Pb), zirconium (Zr), and titanium (Ti), or it may include a nickel zirconate niobate lead niobate (PZNN)-based material containing lead (Pb), zinc (Zn), nickel (Ni), and niobium (Nb), but the embodiments of this disclosure are not limited thereto. According to another embodiment of this disclosure, the vibrating portion 131a may include a lead magnesium niobate (PMN)-based material, a lead nickel niobate (PNN)-based material, a lead zirconate niobate (PZN)-based material, or a lead indium niobate (PIN)-based material, but the embodiments of this disclosure are not limited thereto. The PMN-based material may include Pb, magnesium (Mg), and Nb, and may, for example, be Pb(Mg,Nb)O3. The PNN-based material may include Pb, Ni, and Nb, and may, for example, be Pb(Ni,Nb)O3. The PIN-based material may include Pb, In, and Nb, and may, for example, be Pb(In,Nb)O3. According to another embodiment of the present disclosure, the vibration part 131a may include one or more of calcium titanate (CaTiO3), BaTiO3 and SrTiO3, none of which contain Pb, but the embodiments of the present disclosure are not limited thereto.

[0201] Reference Figure 7B According to one embodiment of the present disclosure, the vibration device may be referred to as a flexible vibration structure material, a flexible vibrator, a flexible vibration generating device, a flexible vibration generator, a flexible sound generator, a flexible sound device, a flexible sound generating device, a flexible sound generator, a flexible actuator, a flexible loudspeaker, a flexible piezoelectric loudspeaker, a thin film actuator, a thin film piezoelectric composite actuator, a thin film loudspeaker, a thin film piezoelectric loudspeaker, or a thin film piezoelectric composite loudspeaker, but the terminology is not limited thereto.

[0202] Reference Figure 7BAccording to one embodiment of the present disclosure, the vibration portion 131a may include a plurality of first portions 131a1 and a plurality of second portions 131a2. For example, the plurality of first portions 131a1 and the plurality of second portions 131a2 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 transverse direction of the vibration portion 131a, and the second direction Y may be the longitudinal direction of the vibration portion 131a intersecting the first direction X. However, the embodiments of the present disclosure are not limited to this, and the first direction X may be the longitudinal direction of the vibration portion 131a, and the second direction Y may be the transverse direction of the vibration portion 131a.

[0203] According to one embodiment of this disclosure, the vibrating portion 131a can be formed as a continuous structure in the second direction or the Y direction. (Combined with...) Figure 3 Reference Figure 7A and Figure 7B When the vibrating part 131a forms a discontinuous structure in the second direction or the Y direction, the stress component "d" 31 "It may not be transmitted to the vibrating member 100. Therefore, the desired structure of the vibrating portion 131a according to one embodiment of the present disclosure can be formed as a continuous structure in the Y direction. For example, the desired structure of the vibrating portion 131a according to one embodiment of the present disclosure can be formed as a continuous structure in the Y direction while being formed as a discontinuous structure in directions other than the Y direction."

[0204] For example, the first portion 131a1 may include an inorganic material, and the second portion 131a2 may include an organic material. For example, the first portion 131a1 may be a piezoelectric material, and the second portion 131a2 may be malleable or flexible. For example, the inorganic material of the first portion 131a1 may be a piezoelectric material, and the organic material of the second portion 131a2 may be malleable or flexible.

[0205] Each of the plurality of first portions 131a1 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.

[0206] Each of the plurality of first parts 131a1 may include references above. Figure 7A The material of the vibrating part 131a described is the same as that of the material.

[0207] Each of the plurality of second portions 131a2 according to one embodiment of the present disclosure may include an organic material portion. The organic material portion included in the second portion 131a2 may include an organic material, organic polymer, organic piezoelectric material, or organic non-piezoelectric material that has flexible properties compared to the inorganic material portion serving as the first portion 131a1. For example, the second portion 131a2 may be referred to as an adhesive portion, a stretching portion, a bending portion, a damping portion, or a flexible portion having flexibility, but embodiments of the present disclosure are not limited thereto. For example, the organic material portion may be disposed between two adjacent inorganic material portions, thus absorbing impacts applied to the inorganic material portion (or the first portion) and releasing stress concentrated on the inorganic material portion, thereby enhancing the durability of the vibrating portion 131a or the vibrating device 131 and providing flexibility to the vibrating portion 131a or the vibrating device 131.

[0208] Each of the plurality of second portions 131a2 may be disposed between the plurality of first portions 131a1. Therefore, in the vibrating portion 131a or vibrating device 131, the vibrational energy of the links in the unit grid based on the first portions 131a1 can be increased by the second portions 131a2, thereby increasing the vibrational characteristics and ensuring piezoelectric properties and flexibility. For example, the second portions 131a2 may comprise one of epoxy-based polymers, acrylic-based polymers, and silicone-based polymers, but embodiments of this disclosure are not limited thereto.

[0209] According to one embodiment of this disclosure, the modulus and viscoelasticity of the second portion 131a2 may be lower than those of the first portion 131a1. Therefore, the second portion 131a2 can enhance the reliability of the first portion 131a1, which is susceptible to impact due to the brittle nature of the first portion 131a1. For example, the second portion 131a2 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 (gigapascals).

[0210] In the vibrating portion 131a, a plurality of first portions 131a1 and a plurality of second portions 131a2 may be arranged (or arranged) in parallel on the same plane (or the same layer). Each of the plurality of second portions 131a2 may be configured to fill the gap between two adjacent first portions 131a1, so that each of the plurality of second portions 131a2 may be connected to or attached to an adjacent first portion 131a1. Therefore, the vibrating portion 131a may extend to a desired size or length based on the lateral connection (or link) between the first portions 131a1 and the second portions 131a2.

[0211] Reference Figure 7BA plurality of first portions 131a1 and a plurality of second portions 131a2 may be arranged alternately and repeatedly in a first direction X. Each of the plurality of first portions 131a1 may be disposed between the plurality of second portions 131a2. For example, each of the plurality of first portions 131a1 may have a first width W1 parallel to the first direction X and a length parallel to the second direction Y. Each of the plurality of second portions 131a2 may have a second width W2 parallel to the first direction X and a length parallel to the second direction Y. The first width W1 and the second width W2 may be the same or different. For example, the first width W1 may be greater than the second width W2. For example, the first portions 131a1 and the second portions 131a2 may include linear or strip shapes having the same or different dimensions. Therefore, Figure 7B The vibrating portion 131a shown may have a 2-2 composite structure and may have a resonant frequency of 20 kHz or lower, but the embodiments disclosed herein are not limited thereto. For example, the resonant frequency of the vibrating portion 131a may vary based on one or more of the shape, length, and thickness of the vibrating portion.

[0212] exist Figure 7B In the vibrating portion 131a shown, a plurality of first portions 131a1 and a plurality of second portions 131a2 can be arranged in parallel (or arranged) on the same plane (or the same layer). Each of the plurality of second portions 131a2 can be configured to fill the gap between two adjacent first portions 131a1, and thus each of the plurality of second portions 131a2 can be connected to or attached to an adjacent first portion 131a1. Therefore, the vibrating portion 131a can extend to a desired size or length based on the lateral connection (or link) between the first portions 131a1 and the second portions 131a2.

[0213] exist Figure 7B In the vibrating portion 131a shown, the width W2 of each of the plurality of second portions 131a2 may gradually decrease in the direction from the center portion of the vibrating portion 131a or the vibrating device to its two edge portions (or sides or ends).

[0214] According to one embodiment of this disclosure, the second portion 131a2 having the largest width W2 among the plurality of second portions 131a2 can be located at the portion where the highest stress may concentrate when the vibrating portion 131a or the vibrating device is vibrating in the vertical direction Z (or the thickness direction). The second portion 131a2 having the smallest width W2 among the plurality of second portions 131a2 can be located at the portion where relatively low stress may occur when the vibrating portion 131a or the vibrating device is vibrating in the vertical direction Z. For example, the second portion 131a2 having the largest width W2 among the plurality of second portions 131a2 can be provided at the central portion of the vibrating portion 131a, and the second portion 131a2 having the smallest width W2 among the plurality of second portions 131a2 can be provided at each of the two outer peripheries of the vibrating portion 131a. Therefore, when the vibrating portion 131a or the vibrating device is vibrating in the vertical direction Z, interference of sound waves or overlap of resonant frequencies that both occur in the portion where the highest stress is concentrated can be reduced or minimized. Therefore, the drop in sound pressure level in the low-pitched vocal cords can be reduced, thereby improving the flatness of the sound characteristics in the low-pitched vocal cords. For example, the flatness of sound characteristics can be the level of deviation between the highest and lowest sound pressure levels.

[0215] exist Figure 7B In the vibrating portion 131a shown, the plurality of first portions 131a1 can have different dimensions (or widths). For example, the dimension (or width) of each of the plurality of first portions 131a1 can gradually decrease or increase in the direction from the center portion of the vibrating portion 131a or the vibrating device to its two edge portions (or sides or ends). Therefore, based on the vibration of the plurality of first portions 131a1 with different dimensions, the sound pressure level characteristics of the sound of the vibrating portion 131a can be enhanced by various unique vibration frequencies, and the sound reproduction frequency band can be extended.

[0216] Each of the plurality of second portions 131a2 may be disposed between the plurality of first portions 131a1. Therefore, in the vibrating portion 131a or vibrating device 131, the vibrational energy of the links in the unit lattice based on the first portions 131a1 can be increased by the second portions 131a2, thereby improving vibrational characteristics and ensuring piezoelectric properties and flexibility. For example, the second portions 131a2 may comprise one of epoxy-based polymers, acrylic-based polymers, and silicone-based polymers, but embodiments of this disclosure are not limited thereto.

[0217] Each of the plurality of second portions 131a2 according to one 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, thereby absorbing impacts applied to the inorganic material portion (or the first portion) and releasing stress concentrated on the inorganic material portion, thereby enhancing the durability of the vibrating portion 131a or the vibrating device 131 and achieving flexibility of the vibrating portion 131a or the vibrating device 131.

[0218] According to one embodiment of this disclosure, the modulus and viscoelasticity of the second portion 131a2 may be lower than those of the first portion 131a1. Therefore, the second portion 131a2 can enhance the reliability of the first portion 131a1, which is susceptible to impact due to the brittle nature of the first portion 131a1. For example, the second portion 131a2 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 (gigapascals).

[0219] The organic material portion included in the second part 131a2 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 131a1. For example, the second part 131a2 may be referred to as an adhesive portion, a flexible portion, a bending portion, a damping portion, or a stretchable portion, etc., but the embodiments of this disclosure are not limited thereto.

[0220] Multiple first portions 131a1 and multiple second portions 131a2 can be disposed (or connected) on the same plane, thus the vibrating portion 131a according to this embodiment can have a single thin film form. For example, the vibrating portion 131a can have a structure in which multiple first portions 131a1 are connected to one side thereof. For example, the vibrating portion 131a can have a structure in which multiple first portions 131a1 are connected throughout the vibrating portion 131a. For example, the vibrating portion 131a can vibrate in the vertical direction relative to the vibrating member by means of the first portions 131a1 having vibration characteristics, and can be bent into a curved shape by means of the flexible second portions 131a2. Furthermore, in the vibrating portion 131a according to this embodiment, the dimensions of the first portions 131a1 and the second portions 131a2 can be adjusted based on the piezoelectric characteristics and flexibility required for the vibrating portion 131a or the vibrating device 131. For example, in a vibrating portion 131a that requires piezoelectric characteristics rather than flexibility, the dimensions of the first portions 131a1 can be adjusted to be larger than the dimensions of the second portions 131a2. In another embodiment of this disclosure, in a vibrating portion 131a that requires flexibility rather than piezoelectric properties, the size of the second portion 131a2 can be set to be larger than the size of the first portion 131a1. Therefore, the size of the vibrating portion 131a can be adjusted based on the desired characteristics, thereby making the design of the vibrating portion 131a easier.

[0221] Figure 8A It is along Figure 1 Another cross-sectional view taken from line AA′. Figure 8B It is along Figure 1 Another cross-sectional view taken from line BB′. Figure 9 yes Figure 8B Enlarged views of the vibrating components and vibrating devices, and Figure 10 This is another perspective view of a vibration member and a vibration device according to one embodiment of the present disclosure.

[0222] Reference Figures 8A to 10 According to one embodiment of the present disclosure, the device may further include a second vibrating member 190 disposed between the vibrating member 100 and the vibrating device 200.

[0223] The second vibration member 190 may be disposed between the rear surface of the vibration member 100 and each of the first vibration device 130-1 and the second vibration device 130-2 of the vibration device 200.

[0224] The second vibrating member 190 can dissipate heat generated from the vibrating member 100, or can increase the mass of each of the first vibrating device 130-1 and the second vibrating device 130-2 disposed on or suspended from the rear surface of the vibrating member 100. The second vibrating member 190 may have the same shape and size as the rear surface of the vibrating member 100, or may have the same shape and size as the vibrating device 200. As another embodiment of this disclosure, the second vibrating member 190 may have a different size than the vibrating member 100. For example, the second vibrating member 190 may be smaller than the size of the vibrating member 100. As another embodiment of this disclosure, the second vibrating member 190 may have a different size than the vibrating device 200. For example, the second vibrating member 190 may be larger or smaller than the size of the vibrating device 200. The vibrating device 200 may have the same size as or smaller than the vibrating member 100.

[0225] According to one embodiment of the present disclosure, the second vibration member 190 may include a metallic material. For example, the second vibration member 190 may include one or more materials selected from stainless steel, aluminum (Al), magnesium (Mg), Mg alloy, magnesium-lithium (Mg-Li) alloy, and Al alloy, but the embodiments of the present disclosure are not limited thereto.

[0226] According to one embodiment of this disclosure, the second vibrating member 190 may include a plurality of openings. The plurality of openings may be configured to have predetermined dimensions and predetermined intervals. For example, the plurality of openings may be arranged along a first direction X and a second direction Y to have predetermined dimensions and predetermined intervals. Due to the presence of the plurality of openings, the sound waves (or sound pressure) based on the vibration of the vibrating device 200 are not dispersed by the second vibrating member 190, but can be concentrated on the vibrating member 100. Therefore, vibration loss caused by the second vibrating member 190 can be minimized, thereby improving the sound pressure level characteristics of the sound generated based on the vibration of the vibrating member 100. For example, the second vibrating member 190 including the plurality of openings may have a grid shape. For example, the second vibrating member 190 including the plurality of openings may be a grid plate.

[0227] According to some embodiments of this disclosure, the second vibration member 190 may be connected to or coupled to the rear surface of the vibration member 100. The second vibration member 190 can dissipate heat generated in the vibration member 100. For example, the second vibration member 190 may be referred to as a heat dissipation member, heat dissipation plate, or radiator, but the embodiments of this disclosure are not limited thereto.

[0228] According to one embodiment of this disclosure, the second vibrating member 190 can increase the mass of the vibrating device 200 disposed on or suspended from the rear surface of the vibrating member 100. Therefore, the second vibrating member 190 can reduce the resonant frequency of the vibrating device 200 based on the increased mass of the vibrating device 200. Thus, the second vibrating member 190 can increase the sound characteristics and sound pressure level characteristics of the low-pitched vocal cords generated by the vibration of the vibrating device 200, and can enhance the flatness of the sound pressure level characteristics. For example, the flatness of the sound pressure level characteristics can be the magnitude of the deviation between the highest and lowest sound pressure levels. For example, the second vibrating member 190 can be referred to as a weight member, mass member, sound flattening member, etc., but the embodiments of this disclosure are not limited thereto.

[0229] According to one embodiment of this disclosure, based on the stiffness of the second vibrating member 190, the displacement (or bending force or flexural force) or amplitude displacement (or vibration width) of the vibrating member 100 on which the second vibrating member 190 is provided can decrease as the thickness of the second vibrating member 190 increases. Therefore, based on the displacement (or vibration) of the vibrating member 100, sound pressure level characteristics and low-pitched vocal cord characteristics can be generated.

[0230] Figure 11A An example of a vibration device connected to a second vibration member according to one embodiment of the present disclosure is shown, and Figure 11B An example is shown where the second vibrating component and the vibrating device are connected to each other according to the experimental example.

[0231] Reference Figure 11A According to one embodiment of the present disclosure, the device may include a second vibrating member 190, a vibrating device 200, and a curved support member 170 located between the second vibrating member 190 and the vibrating device 200. It may also include a first connecting member 150 located between the curved support member 170 and the second vibrating member 190, and a second connecting member 150-2 located between the curved support member 170 and the vibrating device 200. Here, the first surface of the curved support member 170 adjacent to the vibrating device 200 may be fabricated as a surface having a specific curvature "R" in a second direction or Y direction. Therefore, the vibrating device 200 disposed on the first surface of the curved support member 170 can be disposed on the first surface of the curved support member 170 in a state where the vibrating device 200 is bent to have a bending or flexing state corresponding to the first surface of the support member 170.

[0232] exist Figure 11AIn this embodiment, the curved support member 170 is made of acrylonitrile-butadiene-styrene copolymer (ABS), and the second vibrating member 190 is made of polyethylene terephthalate (PET). In this case, the thickness of the second vibrating member 190 is 0.2 mm, and its width and length are 170 × 280 mm. However, the dimensions of the second vibrating member 190 are not limited to these dimensions in the specification.

[0233] Reference Figure 11B The apparatus of the experimental example disclosed herein can be configured to include a second vibrating member 19, a vibrating device 20, and a connecting member 15 between the second vibrating member 19 and the vibrating device 20. Figure 11B In this embodiment, the second vibrating member 19 has been fabricated to include polyethylene terephthalate (PET). The thickness of the second vibrating member 19 has been fabricated to be 0.2 mm, and its width and length have been fabricated to be 170 × 280 mm.

[0234] Figure 12 Shown in Figure 11A and Figure 11B The sound pressure level relative to frequency in the device.

[0235] Sound output characteristics can be measured using a sound analysis device. This device can be a B&K audio measurement device. The sound analysis device may include a sound card that sends or receives sound to or from a control PC, an amplifier that amplifies the signal generated by the sound card and transmits the amplified signal to a vibration device, and a microphone that captures the sound generated by the vibration device in a display panel. For example, the microphone may be positioned in the center of the vibration device, and the distance between the display panel and the microphone may be approximately 50 cm. Sound can be measured with the microphone perpendicular to the vibration device. The sound captured 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 it in a control program. For example, the frequency response characteristics in the frequency range of 100 Hz to 20 kHz can be measured using a pulse program.

[0236] exist Figure 12 In the diagram, the horizontal axis represents frequency (Hertz (Hz)) and the vertical axis represents sound pressure level (SPL) (decibels (dB)). Figure 12 The dashed line represents Figure 11A The sound output characteristics of the device, and the solid line represents... Figure 11B The sound output characteristics.

[0237] Reference Figure 12Compared to the solid line, the dashed line shows that the sound output characteristics are enhanced from 200Hz to 4000Hz. For example, compared to the solid line, the dashed line shows that the sound pressure level is enhanced in the mid-to-low frequency range. For example, compared to the solid line, the dashed line shows that the sound pressure level is enhanced by an average of about 10dB from 100Hz to 1000Hz, and by about 14dB at a maximum of 400Hz. For example, the sound pressure level is enhanced by an average of about 4dB from 1000Hz to 4000Hz.

[0238] Figure 13A An example is shown of a vibration device coupled to the rear surface of a vibration member according to one embodiment of the present disclosure. Figure 13B The second vibrating member is shown being added. Figure 13A Examples of structures, Figure 13C An example is shown of a vibration device connected to the rear surface of a vibrating component according to an experimental example, and Figure 13D The second vibrating member is shown being added. Figure 13C An example of the structure of the experimental case.

[0239] Reference Figure 13A According to one embodiment of the present disclosure, the device may include a curved support member 170 disposed on the rear surface of the vibrating member 100 and a vibrating device 200 disposed on the rear surface of the curved support member 170. The device may include a first connecting member 150 located between the curved support member 170 and the second vibrating member 190, and a second connecting member 150-2 located between the curved support member 170 and the vibrating device 200. Here, the first surface of the curved support member 170 adjacent to the vibrating device 200 may be fabricated to include a curved surface having a specific curvature "R" in the second direction or the Y direction. Therefore, the vibrating device 200 disposed on the first surface of the curved support member 170 can be disposed on the first surface of the curved support member 170 in a state where the vibrating device 200 is bent to have a bending or deflection corresponding to the first surface of the support member 170. Figure 13A In this process, the curved support member 170 has been prepared as an acrylonitrile-butadiene-styrene copolymer (ABS).

[0240] Reference Figure 13BAccording to one embodiment of the present disclosure, the device may include a second vibrating member 190 disposed on the rear surface of the vibrating member 100, a curved support member 170 disposed on the rear surface of the second vibrating member 190, and a vibrating device 200 disposed on the rear surface of the curved support member 170. The device may include a first connecting member 150 located between the curved support member 170 and the second vibrating member 190, and a second connecting member 150-2 located between the curved support member 170 and the vibrating device 200. Here, the first surface of the curved support member 170 adjacent to the vibrating device 200 may be fabricated to include a curved surface having a specific curvature "R" in the second direction or the Y direction. Therefore, the vibrating device 200 disposed on the first surface of the curved support member 170 can be disposed on the first surface of the curved support member 170 in a bent or flexed state corresponding to the first surface of the support member 170. Figure 13B In this design, the curved support member 170 is made of acrylonitrile-butadiene-styrene copolymer (ABS), and the second vibrating member 190 is made of one of polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene copolymer (ABS), and aluminum (Al). When the second vibrating member 190 is made of polyethylene terephthalate (PET), its thickness is 0.2 mm, and its width and length are 150 × 150 mm. When the second vibrating member 190 is made of acrylonitrile-butadiene-styrene copolymer (ABS), its thickness is 0.5 mm, and its width and length are 150 × 150 mm. When the second vibrating member 190 is made of aluminum (Al), its thickness is 0.15 mm, and its width and length are 170 × 250 mm. However, the dimensions of the second vibrating member 190 are not limited thereto in this specification.

[0241] Reference Figure 13C According to one embodiment of the present disclosure, the device may include a vibrating member 100 and a vibrating device 20 disposed on the rear surface of the vibrating member 100, and may also include a connecting member 15 located between the vibrating member 100 and the vibrating device 20.

[0242] Reference Figure 13D The apparatus according to the experimental examples of this disclosure may include a vibrating member 100, a second vibrating member 19 disposed on the rear surface of the vibrating member 100, and a vibrating device 20 disposed on the rear surface of the second vibrating member 19, and may further include a connecting member 15 located between the second vibrating member 19 and the vibrating device 20. Figure 13DIn this process, the second vibrating component 19 has been prepared as one of polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene copolymer (ABS), and aluminum (Al).

[0243] Figure 14 Shown in Figure 13A and Figure 13C The sound pressure level relative to frequency in the device.

[0244] The measurement method for measuring sound output characteristics can be referenced above. Figure 12 The details described are the same, so the description is omitted.

[0245] exist Figure 14 In the diagram, the horizontal axis represents frequency (Hz), and the vertical axis represents sound pressure level (SPL) (dB). Figure 14 The dashed line represents Figure 13A The sound output characteristics of the device, and the solid line represents... Figure 13C The sound output characteristics.

[0246] Reference Figure 14 Compared to the solid line, the dashed line shows an increase in sound pressure level (SPL) within the 200Hz to 900Hz range. For example, compared to the solid line, the dashed line shows an increase in SPL in the mid-to-low frequency range. For example, compared to the solid line, the dashed line shows a higher SPL measured between 100Hz and 20kHz. For example, compared to the solid line, the dashed line shows an average increase of approximately 10dB in SPL between 100Hz and 1000Hz, with a maximum increase of approximately 14dB at 400Hz. For example, the dashed line shows an average increase of approximately 4dB in SPL between 1000Hz and 4000Hz.

[0247] Reference Figure 14 ,Depend on Figure 13A The device fabricated according to embodiments of the present disclosure may include: a curved support member 170, which includes a first surface formed as a curve adjacent to the vibration device 200; and the vibration device 200 having a bending or deflection corresponding to the first surface of the curved support member 170. Therefore, compared to the device of the experimental example including a structure of a flat vibration device 20, a maximum increase of 20 dB in sound pressure level can be observed in the 200 Hz to 900 Hz range.

[0248] Figure 15 Shown in Figure 13B and Figure 13C The sound pressure level relative to frequency in the device.

[0249] The measurement method for measuring sound output characteristics can be referenced above. Figure 12 The details described are the same, so the description is omitted.

[0250] exist Figure 15 In the diagram, the horizontal axis represents frequency (Hertz (Hz)) and the vertical axis represents sound pressure level (SPL) (decibels (dB)). Figure 15 The dashed line represents Figure 13B The sound output characteristics of the device, and the solid line represents... Figure 13C The sound output characteristics.

[0251] exist Figure 15 middle, Figure 13B The second vibrating component 190 of the device has been prepared to include polyethylene terephthalate (PET).

[0252] Reference Figure 15 Compared to the solid line, the dashed line shows that the sound output characteristics are enhanced in the approximately 300Hz to 600Hz and approximately 6000Hz to 10500Hz ranges. For example, compared to the solid line, the dashed line shows that the overall sound output characteristics are flatter. For example, compared to the solid line, the dashed line shows that the sound output characteristics of the bass vocal cords are enhanced.

[0253] Figure 16 Shown in Figures 13B to 13D The sound pressure level relative to frequency in the device.

[0254] The measurement method for measuring sound output characteristics can be referenced above. Figure 12 The details described are the same, so the description is omitted.

[0255] exist Figure 16 In the diagram, the horizontal axis represents frequency (Hz), and the vertical axis represents sound pressure level (SPL) (dB). Figure 16 The dashed line represents Figure 13B The device's sound output characteristics, indicated by a single-dotted line. Figure 13B The sound output characteristics, and the solid line represents... Figure 13C The sound output characteristics of the device. The second vibrating member 190, indicated by the dashed line, has been fabricated to include ABS, while the second vibrating member 190, indicated by the single-dotted line, has been fabricated to include PET.

[0256] Reference Figure 16 Compared to the solid line, the sound output characteristics from approximately 200Hz to 500Hz are enhanced in the dashed and dotted lines, and the overall sound output characteristics become flatter. For example, compared to the solid line, the sound output characteristics of the bass vocal cords are enhanced in the dashed and dotted lines. Compared to the dotted line, the sound output characteristics are enhanced by approximately 2dB in the dashed line range from approximately 200Hz to 400Hz. Therefore, when the second vibrating member 190 is fabricated using a material with high modulus or high stiffness, the sound output characteristics of the bass vocal cords are enhanced.

[0257] Figure 17 Shown in Figures 13B to 13D The sound pressure level relative to frequency in the device.

[0258] The measurement method for measuring sound output characteristics can be referenced above. Figure 12 The details described are the same, so the description is omitted.

[0259] exist Figure 17 In the diagram, the horizontal axis represents frequency (Hz), and the vertical axis represents sound pressure level (SPL) (dB). Figure 17 The dashed line represents Figure 13B The sound output characteristics of the device, represented by the solid line. Figure 13C The device's sound output characteristics, indicated by a single-dot-dash line. Figure 13D The sound output characteristics. The dashed second vibrating member 190 and the single-dotted second vibrating member 190 have been fabricated to include aluminum.

[0260] Reference Figure 17 Compared to the dashed line, the dashed line shows an enhancement in sound output characteristics across the approximately 200Hz to 900Hz range. For example, compared to the dashed line, the dashed line shows an enhancement in the sound output characteristics of the bass vocal bands, with a maximum enhancement of 8dB at approximately 400Hz. For example, compared to the solid line, both the dashed and dashed lines show a flattening of the overall sound output characteristics.

[0261] The vibration device according to one embodiment of this disclosure can be applied to vibration devices provided in devices. The device according to one embodiment of this disclosure can be applied to mobile devices, video phones, smartwatches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, curved surface 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 device according to this disclosure can be applied to organic light-emitting lighting devices or inorganic light-emitting lighting devices. When the vibration device is applied to a lighting device, the vibration device can function as both a lighting device and a speaker. Furthermore, when the vibration device according to this disclosure is applied to a mobile device, the vibration device can be one or more of a speaker, a radio, or a tactile device, but the embodiments of this disclosure are not limited thereto.

[0262] The apparatus according to various embodiments of the present disclosure will now be described.

[0263] The apparatus according to various embodiments of the present disclosure may include: a vibrating member; a vibrating device located at the rear surface of the vibrating member and configured to vibrate the vibrating member; and a curved support member located between the vibrating member and the vibrating device, the curved support member including a first surface adjacent to the vibrating device and a second surface opposite to the first surface, and the first surface including a curved surface.

[0264] According to various embodiments of this disclosure, the second surface may include a surface different from the first surface.

[0265] According to various embodiments of this disclosure, the first surface of the curved support member may have a curvature of 300R to 4000R.

[0266] According to various embodiments of this disclosure, the distance between the first surface and the second surface can have the maximum distance at the center portion of the curved support member.

[0267] According to various embodiments of this disclosure, the maximum distance can be from 0.45 mm to 6 mm.

[0268] According to various embodiments of this disclosure, the distance between the first surface and the second surface can have a distance that gradually decreases from a maximum distance in a direction away from the center in a first direction.

[0269] According to various embodiments of this disclosure, the distance between the first surface and the second surface can be a constant distance in a second direction different from the first direction.

[0270] According to various embodiments of the present disclosure, the vibration device may include a vibration portion formed as a continuous structure in a first direction.

[0271] According to various embodiments of this disclosure, the device may further include a second vibrating member located between the vibrating member and the curved support member.

[0272] According to various embodiments of this disclosure, the second vibrating member can dissipate heat generated from the vibrating member and can increase the mass of the vibrating member.

[0273] According to various embodiments of this disclosure, the vibration device may have a shape corresponding to the curvature of the first surface of the curved support member.

[0274] According to various embodiments of this disclosure, the first and second transverse surfaces of the vibration device may be parallel to the rear surface of the vibration member.

[0275] According to various embodiments of this disclosure, the device may further include a first connecting member located between the vibrating member and the curved support member.

[0276] According to various embodiments of this disclosure, the first and second transverse surfaces of the vibrating device can contact the first connecting member.

[0277] According to various embodiments of this disclosure, the first connecting member may include a hollow portion.

[0278] According to various embodiments of this disclosure, the device may also include a second connecting member located between the curved support member and the vibrating device.

[0279] According to various embodiments of the present disclosure, the vibration device may include: a vibration portion; a first electrode portion located on a first surface of the vibration portion; and a second electrode portion located on a surface of the vibration portion that is different from the first surface.

[0280] According to various embodiments of the present disclosure, the vibration device may include: a first cover member located at the first electrode portion; and a second cover member located at the second electrode portion.

[0281] According to various embodiments of the present disclosure, the device may further include: a first adhesive layer located between the first cover member and the first electrode portion; and a second adhesive layer located between the second cover member and the second electrode portion.

[0282] According to various embodiments of this disclosure, the vibrating portion may include an inorganic material portion having piezoelectric properties.

[0283] According to various embodiments of the present disclosure, the vibrating portion may include: a plurality of inorganic material portions having piezoelectric properties; and an organic material portion located between the plurality of inorganic material portions.

[0284] According to various embodiments of this disclosure, the vibrating member may include a first region and a second region, and the vibrating device may include a first vibrating device located in the first region and a second vibrating device located in the second region.

[0285] According to various embodiments of this disclosure, the vibration device may include two or more vibration generators, and the two or more vibration generators may be configured to vibrate in the same direction.

[0286] According to various embodiments of this disclosure, the vibrating component may include a metallic material, or a single non-metallic material or a composite non-metallic material, wherein the composite non-metallic material includes one or more of wood, rubber, plastic, glass, fiber, cloth, paper and leather.

[0287] According to various embodiments of the present disclosure, the vibrating component may include one or more of a display panel, a light-emitting diode (LED) illumination panel, an organic light-emitting diode (OLED) illumination panel, and an inorganic light-emitting diode (LED) illumination panel, wherein the display panel includes a plurality of pixels configured to display an image.

[0288] According to various embodiments of this disclosure, the vibrating component may include one or more of the following: a display panel including pixels configured to display images, a screen panel on which images are projected from a display device, a lighting panel, a sign panel, vehicle interior materials, vehicle windows, vehicle exterior materials, building ceiling materials, building interior materials, building windows, aircraft interior materials, aircraft windows, metals, wood, rubber, plastics, glass, fibers, cloth, paper, leather, and mirrors.

[0289] In the device according to the embodiments of the present disclosure, since a vibration device for vibrating the display panel or the vibrating member is provided, sound can be generated so that the sound propagates toward the front surface of the vibrating member.

[0290] The device according to embodiments of this disclosure may include a curved support member disposed between the vibrating device and the vibrating component. The curved support member may be implemented as a curved surface with a specific curvature, and the vibrating device may include a specific curved surface, thus the stress components and / or vibration components "d" appearing in the vibrating device 31 " and "d 33 "It can affect the vibrating components, thereby increasing the sound pressure level of the mid-to-low pitch vocal cords."

[0291] In the device according to the embodiments of the present disclosure, the low-pitched vocal characteristics, mid-low-pitched vocal characteristics, mid-pitched vocal characteristics, and high-pitched vocal characteristics of the sound generated based on the displacement of the vibrating plate can be enhanced.

[0292] It will be apparent to those skilled in the art that various modifications and variations can be made to the apparatus of this disclosure without departing from the technical concept or scope thereof. Therefore, this disclosure is intended to cover any modifications and variations thereof that fall within the scope of the appended claims and their equivalents.

[0293] Cross-reference to related applications

[0294] This application claims the benefit of Korean Patent Application No. 10-2021-0173132, filed on December 6, 2021, which is incorporated herein by reference as if fully set forth herein.

Claims

1. A device for outputting sound, the device comprising: Vibrating components; A vibration device located on the rear surface of the vibrating member and configured to cause the vibrating member to vibrate; as well as A curved support member is located between the vibrating member and the vibrating device. The curved support member includes a first surface adjacent to the vibration device and a second surface opposite to the first surface, wherein the first surface is curved. The distance between the first surface and the second surface is greatest at the central portion of the curved support member. The distance between the first surface and the second surface has a distance that gradually decreases from the maximum distance in a direction away from the center in a first direction.

2. The device according to claim 1, wherein, The second surface includes a surface that is different from the first surface.

3. The device according to claim 1, wherein, The first surface of the curved support member has a curvature of 300R to 4000R.

4. The device according to claim 1, wherein, The maximum distance ranges from 0.45 mm to 6 mm.

5. The device according to claim 1, wherein, The distance between the first surface and the second surface is a constant distance in a second direction different from the first direction.

6. The device according to claim 1, wherein, The vibration device includes a vibration section that is formed as a continuous structure in the first direction.

7. The device according to claim 1, further comprising a second vibration member located between the vibration member and the curved support member.

8. The device according to claim 7, wherein, The second vibrating member dissipates the heat generated from the vibrating member and increases the mass of the vibrating member.

9. The device according to claim 1, wherein, The vibration device has a shape corresponding to the curvature of the first surface of the curved support member.

10. The device according to claim 1, wherein, The first and second transverse surfaces of the vibrating device are parallel to the rear surface of the vibrating member.

11. The device according to claim 1, further comprising a first connecting member located between the vibrating member and the curved support member.

12. The device according to claim 11, wherein, The first and second transverse surfaces of the vibrating device contact the first connecting member.

13. The device according to claim 11, wherein, The first connecting member includes a hollow portion.

14. The device according to claim 1, further comprising a second connecting member located between the curved surface support member and the vibration device.

15. The device according to claim 1, wherein, The vibration device includes: Vibrating part; A first electrode portion, the first electrode portion being located on a first surface of the vibrating portion; and The second electrode portion is located on a surface of the vibrating portion that is different from the first surface.

16. The device according to claim 15, wherein, The vibration device includes: A first cover member, the first cover member being located at the first electrode portion; and The second cover member is located at the second electrode portion.

17. The apparatus of claim 16, further comprising: A first adhesive layer is located between the first cover member and the first electrode portion; as well as A second adhesive layer is located between the second cover member and the second electrode portion.

18. The device according to claim 17, wherein, The vibrating part includes an inorganic material portion with piezoelectric properties.

19. The device according to claim 17, wherein, The vibrating component includes: Multiple inorganic material portions, wherein the multiple inorganic material portions have piezoelectric properties; and An organic material portion is located between the plurality of inorganic material portions.

20. The device according to claim 1, wherein, The vibrating component includes a first region and a second region, and The vibration device includes a first vibration device located in the first region and a second vibration device located in the second region.

21. The device according to claim 1, wherein, The vibration device includes two or more vibration generators, and The two or more vibration generators are configured to vibrate in the same direction.

22. The device according to claim 1, wherein, The vibrating component may be a metallic material, or a single non-metallic material or a composite non-metallic material, wherein the composite non-metallic material may be one or more of wood, rubber, plastic, glass, fiber, cloth, paper and leather.

23. The device according to claim 1, wherein, The vibrating component includes one or more of a display panel, a light-emitting diode (LED) illumination panel, an organic light-emitting diode (OLED) illumination panel, and an inorganic light-emitting diode (LED) illumination panel, wherein the display panel includes a plurality of pixels configured to display an image.

Images