Vibrating device and device comprising same

Abstract

A vibration device and an apparatus including the same are disclosed. The vibration device includes a first vibration portion including a first material and a second vibration portion disposed adjacent to the first vibration portion, the second vibration portion including a second material.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2022-0000009, filed on January 1, 2022, which is incorporated herein by reference as if fully set forth herein. Technical Field

[0003] This disclosure relates to vibration equipment and equipment including such equipment. Background Technology

[0004] The equipment includes a standalone speaker or a sound device that provides sound. When a speaker is installed in the equipment, it occupies space, thus limiting the design and spatial arrangement of the equipment.

[0005] The speaker used in this device can be, for example, an actuator comprising a magnet and a coil. However, when the actuator is applied to the device, its thickness increases. Therefore, piezoelectric elements for achieving thin thicknesses have attracted considerable attention.

[0006] Because piezoelectric elements are fragile, they are easily damaged by external impacts, resulting in low reliability in sound reproduction. Furthermore, when loudspeakers using piezoelectric elements are applied to flexible devices, their fragility can lead to damage.

[0007] The descriptions provided in the background section should not be considered prior art solely because they are mentioned in or associated with that section. The background section may include information describing one or more aspects of the subject matter art, and the descriptions in that section do not limit the invention. Summary of the Invention

[0008] Therefore, the inventors of this disclosure have recognized the aforementioned problems and shortcomings of related technologies, and have conducted extensive research and experimentation to realize a vibration device that can enhance sound quality and sound pressure level characteristics. Through extensive research and experimentation, the inventors have invented a new vibration device and an apparatus incorporating the new vibration device, which can improve sound quality.

[0009] Therefore, embodiments of this disclosure relate to devices that substantially eliminate one or more problems caused by limitations and disadvantages of the related technology.

[0010] This disclosure aims to provide vibration devices and devices including the same, wherein the manufacturing process is simplified, mechanical strength is enhanced, and heat resistance is improved.

[0011] Therefore, embodiments of this disclosure relate to devices that substantially eliminate one or more problems caused by limitations and disadvantages of related technologies.

[0012] Other features and aspects of this disclosure will be set forth in the description which follows, and will be apparent in part from this disclosure, or may be learned by practicing the inventive concept provided herein. Other features and aspects of the inventive concept may be realized and achieved by means of the description provided herein, or may be derived therefrom, as well as from the claims and drawings.

[0013] To achieve these and other aspects of the inventive concept, as embodied and broadly described herein, the vibration device includes: a first vibration portion comprising a first material; and a second vibration portion disposed adjacent to the first vibration portion, the second vibration portion comprising a second material.

[0014] In another aspect, the vibration device includes: a vibration portion comprising a first vibration portion and a second vibration portion; a first electrode portion disposed on a first surface of the vibration portion; and a second electrode portion disposed on a second surface opposite to the first surface of the vibration portion. The first vibration portion comprises a first material, the second vibration portion comprises a second material, and the second vibration portion is disposed adjacent to the first vibration portion.

[0015] In another aspect, the device includes: a vibrating object, a vibration generating device at the vibrating object, and a connecting member between the vibrating object and the vibration generating device. The vibration generating device includes one or more vibration devices, each of which includes a first vibrating portion comprising a first material and a second vibrating portion disposed adjacent to the first vibrating portion, the second vibrating portion comprising a second material.

[0016] Vibration devices according to embodiments of this disclosure may include a composite of a material having a high mechanical quality factor and a material having a high voltage constant, and thus may enhance mechanical strength.

[0017] Compared to the case where only materials with high voltage constants are used, the vibration device according to the embodiments of this disclosure may include a composite of materials with high mechanical quality factors and materials with high voltage constants, and therefore, the conversion of mechanical losses during the conversion of electrical energy may be reduced, or heat may be reduced, thereby preventing heat generation in the vibration device.

[0018] Vibration devices according to embodiments of this disclosure may include a composite of a material having a high mechanical quality factor and a material having a high piezoelectric constant, and thus, vibrations corresponding to low frequencies can be achieved based on the piezoelectric constant, and tactile textures can be simultaneously achieved based on the high mechanical quality factor.

[0019] Other systems, methods, features, and advantages will be or will become apparent to those skilled in the art upon examination of the following drawings and detailed description. All such additional systems, methods, features, and advantages are intended to be included within this specification, within the scope of this disclosure, and protected by the appended claims. Nothing in this section should be construed as limiting these claims. Other aspects and advantages are discussed below in conjunction with embodiments of this disclosure.

[0020] It should be understood that the foregoing and following descriptions of this disclosure are exemplary and illustrative, and are intended to provide further explanation of the claimed disclosure. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this disclosure, are incorporated in and constitute a part of this disclosure. The drawings illustrate aspects and embodiments of this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0022] Figure 1 A display device according to an embodiment of the present disclosure is shown.

[0023] Figure 2 It is along Figure 1 The cross-sectional view taken from line I-I'.

[0024] Figure 3 It is along Figure 1 Another cross-sectional view taken from line I-I'.

[0025] Figure 4 This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to an embodiment of the present disclosure.

[0026] Figure 5 This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to another embodiment of the present disclosure.

[0027] Figure 6 The vibration portion according to an embodiment of this disclosure is shown.

[0028] Figure 7A A vibration portion according to another embodiment of this disclosure is shown.

[0029] Figure 7B A vibration portion according to another embodiment of this disclosure is shown.

[0030] Figure 8A This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to an embodiment of the present disclosure.

[0031] Figure 8B This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to an embodiment of the present disclosure.

[0032] Figure 8C This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to an embodiment of the present disclosure.

[0033] Figure 8D This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to an embodiment of the present disclosure.

[0034] Figure 9 This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to another embodiment of the present disclosure.

[0035] Figures 10A to 10D It is a graph showing the dielectric constant, electromechanical coupling coefficient, mechanical quality factor and piezoelectric constant of a vibration device according to an embodiment of the present disclosure.

[0036] Throughout the accompanying drawings and detailed description, unless otherwise stated, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the dimensions, lengths, and thicknesses of layers, regions, and elements, and their depictions, may be exaggerated. Detailed Implementation

[0037] Reference will now be made to embodiments of this disclosure in detail, examples of which are illustrated in the accompanying drawings. In the following description, detailed descriptions of well-known functions or configurations relevant to this document may be omitted for brevity when such descriptions unnecessarily obscure aspects of this disclosure. The progression of the described processing steps and / or operations is exemplary; however, the order of steps and / or operations is not limited to the order set forth herein and may be changed, except that the steps and / or operations must occur in a specific order.

[0038] Unless otherwise stated, the same reference numerals may indicate the same elements, even if these same reference numerals are shown in different figures. In one or more aspects, unless otherwise stated, the same elements (or elements with the same name) in different figures may have the same or substantially the same function and properties. The names of the various elements used in the following description are chosen only for convenience in writing the specification and may therefore differ from the names used in the actual product.

[0039] The advantages and features of this disclosure, and its implementation methods, are illustrated by means of 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.

[0040] The shapes, dimensions, areas, proportions, angles, quantities, etc. disclosed in the accompanying drawings to describe the embodiments of this disclosure are merely examples, and therefore, this disclosure is not limited to the details shown.

[0041] When terms such as “comprising,” “having,” “including,” “containing,” “constituting,” “made of,” “formed from,” etc. are used, one or more other elements may be added unless the term “only,” etc., is used. The terminology used in this disclosure is for the purpose of describing particular implementations only and is not intended to limit the scope of this disclosure. The terminology used herein is for the purpose of describing exemplary implementations only and is not intended to limit the scope of this disclosure. Singular terms may include plural forms unless otherwise indicated. The word “exemplary” is used to indicate that something is used as an example or illustration. An implementation is an exemplary implementation. An aspect is an exemplary aspect. Any implementation described herein as an “example” is not necessarily to be construed as preferred or advantageous over other implementations.

[0042] In one or more respects, a component, feature, or corresponding information (e.g., level, range, dimension, size, etc.) is interpreted as including a range of errors or tolerances, even if no explicit description is provided. Ranges of errors or tolerances can be caused by a variety of factors (e.g., process factors, internal or external shocks, noise, etc.). Furthermore, the term "may" encompasses all the meanings of the term "able to".

[0043] When describing positional relationships, if the positional relationship between two components is described as such as "on," "above," "below," "above," "below," "under," "near," "close to," "adjacent to," "beside," "next to," etc., one or more other components may be located between the two other components, unless more restrictive terms such as "immediately adjacent," "directly," or "close to" are used. In the description of embodiments, when a structure is described as being "above" or "below" or "under" another structure, the description should be interpreted to include cases where these structures are in contact with each other and cases where a third structure is disposed therebetween.

[0044] When describing temporal relationships, the time sequence may include discontinuous or unordered cases when described as “after,” “following,” “next,” “before,” “before,” etc., unless more restrictive terms such as “exactly,” “immediately after,” or “directly” are used.

[0045] 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 distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be a second element, and similarly, a second element may be a first element. Furthermore, without departing from the scope of this disclosure, the first element, second element, etc., may be arbitrarily named as is convenient for those skilled in the art. The terms "first," "second," etc., may be used to distinguish components from each other, but the function or structure of a component is not limited by the serial number preceding the component or the component name.

[0046] In describing the elements of this disclosure, the terms “first,” “second,” “A,” “B,” “(a),” “(b),” etc., may be used. These terms are intended to distinguish the corresponding element from other elements, and are not intended to define the nature, basis, order, or number of elements.

[0047] For any statement that an element is “connected,” “coupled,” or “adhere” to another element or layer, the element or layer may be directly connected, coupled, or adhered to another element or layer, or indirectly connected, coupled, or adhered to another element or layer, with one or more intermediate elements or layers being “set” or “inserted” between the elements or layers, unless otherwise specified.

[0048] 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 two or more items proposed from the first, second, and third items, as well as only one of the first, second, or third items.

[0049] The expressions "first element," "second element," and " / or" "third element" should be understood as one of the first, second, and third elements, or as any or all combinations of the first, second, and third elements. By way of example, A, B, and / or C can refer to only A; only B; only C; any or some combinations of A, B, and C; or all of A, B, and C. Furthermore, the expression "element A / element B" can be understood as element A and / or element B.

[0050] In one or more aspects, for convenience, the terms "between" and "among" may be used interchangeably unless otherwise stated. For example, the expression "between multiple elements" can be understood as "among multiple elements." In another example, the expression "among multiple elements" can be understood as "between multiple elements." In one or more examples, the number of elements may be two. In one or more examples, the number of elements may be more than two.

[0051] In one or more respects, for convenience, the phrases “each other” and “mutually” may be used interchangeably unless otherwise stated. For example, the expression “different from each other” can be understood as “different from each other”. In another example, the expression “different from each other” can be understood as “different from each other”. In one or more examples, the number of elements involved in the foregoing expression may be two. In one or more examples, the number of elements involved in the foregoing expression may be more than two.

[0052] Features of various embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may interoperate, link, or drive each other in various ways. Embodiments of this disclosure may be performed independently of each other, or may be performed together in a mutually dependent or related relationship. In one or more aspects, components of each device according to various embodiments of this disclosure are operatively coupled and configured.

[0053] Unless otherwise defined, the terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments pertain. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having the meaning consistent with their meaning in the context of, for example, the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0054] In the following, embodiments of the present disclosure are described in detail with reference to the accompanying drawings. Regarding the reference numerals for elements in each drawing, although the same elements may be shown in other drawings, the same reference numerals may refer to the same elements unless otherwise stated. Furthermore, for ease of description, the scale, dimensions, size, and thickness of each element shown in the drawings may differ from the actual scale, dimensions, size, and thickness; therefore, embodiments of the present disclosure are not limited to the scale, dimensions, size, and thickness shown in the drawings.

[0055] Figure 1 A display device according to an embodiment of the present disclosure is shown. Figure 2 It is along Figure 1 The cross-sectional view taken from line I-I'.

[0056] Reference Figure 1 and Figure 2 The device according to embodiments of this disclosure may include a vibrating member and a vibration device 200 disposed on the rear surface (or back side surface) of the vibrating member. For example, the vibrating member may output sound based on the vibration of the vibration device 200. For example, the vibrating member may be a vibrating object, a display panel, a vibrating plate, or a front member, but embodiments of this disclosure are not limited thereto.

[0057] For example, a vibrating component or vibrating object may include one or more of the following: a display panel comprising a plurality of pixels configured to display an image, a screen panel onto which an image is projected from a display device, a lighting panel, a sign panel, interior materials of a vehicle, glass windows of a vehicle, exterior materials of a vehicle, ceiling materials of a building, interior materials of a building, glass windows of a building, interior materials of an aircraft, glass windows of an aircraft, wood, plastic, glass, metal, cloth, fiber, paper, rubber, leather, carbon, and mirrors.

[0058] In the following text, an example of a vibrating component is described as a display panel.

[0059] Reference Figure 1 and Figure 2 An apparatus according to an embodiment of the present disclosure may include a display panel 100 for displaying images and a vibration device 200 at the rear surface (or back side surface) of the display panel 100 for vibrating the display panel 100.

[0060] Display panel 100 can display electronic images, digital images, still images, or video images, etc. For example, display panel 100 can output light to display images. Display panel 100 can be a curved display panel, or it can be any type of display panel, such as 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. Display panel 100 can be a flexible display panel. For example, display panel 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 to these.

[0061] The display panel 100 according to embodiments of the present disclosure may include a display area AA for displaying an image based on the driving of a plurality of pixels. Furthermore, the display panel 100 may include a non-display area IA surrounding the display area AA, but embodiments of the present disclosure are not limited thereto.

[0062] The display panel 100 according to embodiments of this disclosure can be configured to display images in types such as top-emitting, bottom-emitting, and dual-emitting, based on a structure including a pixel array layer comprising a plurality of pixels having an anode electrode, a cathode electrode, and a light-emitting device. In the top-emitting type, an image is displayed by outputting visible light generated from the pixel array layer to the forward region of the substrate. In the bottom-emitting type, an image is displayed by outputting visible light generated from the pixel array layer to the backward region of the substrate.

[0063] The display panel 100 according to embodiments of the present disclosure may include a pixel array portion disposed on a display area AA on a substrate. The pixel array portion may include a plurality of pixels that display an image based on signals supplied via signal lines. The signal lines may include gate lines, data lines, and / or pixel driving power lines, etc., but embodiments of the present disclosure are not limited thereto.

[0064] Each of the plurality of pixels may include a pixel circuit layer comprising a driving thin film transistor (TFT) disposed in a pixel region configured with 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 above the anode electrode, and a cathode electrode electrically connected to the light-emitting device.

[0065] The driving TFT can be configured at the transistor region of each pixel region disposed on 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 embodiments of this disclosure are not limited thereto.

[0066] The anode electrode (or pixel electrode) can be located at an opening in each pixel area and can be electrically connected to the driving TFT.

[0067] The light-emitting device according to the embodiments may include an organic light-emitting device layer formed on an anode electrode. The organic light-emitting device layer may be configured to emit light of the same color (e.g., white light) for each pixel, or may be configured to emit light of a different color (e.g., red, green, or blue light) for each pixel. A cathode electrode (or common electrode) may be commonly 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 a single structure or two or more structures of the same color for each pixel. As another embodiment of this disclosure, the organic light-emitting device layer may have a stacked structure comprising two or more structures of one or more different colors for each pixel. The two or more structures comprising one or more different colors may be configured with 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, red / yellow-green / green, etc., but embodiments of this disclosure are not limited thereto. Furthermore, this disclosure can be applied regardless of the stacking order. A stacked structure comprising two or more structures having the same color or one or more different colors may further include a charge generation layer between the two or more structures. The charge generation layer may have a PN junction structure and may include N-type charge generation layers and P-type charge generation layers.

[0068] According to another embodiment of this disclosure, the light-emitting device may include a microlight-emitting diode (LED) device electrically connected to each of the anode electrode and the cathode electrode. The microlight-emitting diode device may be an LED implemented as an integrated circuit (IC) or a chip-type LED. The microlight-emitting diode 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 commonly connected to the second terminal of the microlight-emitting diode device disposed in each pixel region.

[0069] An encapsulation portion can be formed on a substrate to surround the pixel array portion, thereby preventing oxygen or water from penetrating into the light-emitting device of the pixel array portion. The encapsulation portion according to embodiments of this disclosure can be formed as a multilayer structure in which organic and inorganic material layers are alternately stacked, but embodiments of this disclosure are not limited thereto. The inorganic material layer prevents oxygen or water from penetrating into the light-emitting device of the pixel array portion. The organic material layer can be formed to have a relatively thicker thickness than the inorganic material layer in order to cover particles that appear during the manufacturing process. For example, the encapsulation portion may include a first inorganic layer, an organic layer above the first inorganic layer, and a second inorganic layer above the organic layer. The organic layer may be a particle covering layer, but embodiments of this disclosure are not limited thereto. A touch panel can be disposed above the encapsulation portion or can be disposed on the rear surface of the pixel array portion.

[0070] The display panel 100 according to embodiments of the present disclosure may include a first substrate, a second substrate, and a liquid crystal layer. The first substrate may be an upper substrate or a thin-film transistor (TFT) array substrate. For example, the first substrate may include a pixel array (or display portion or display area) comprising a plurality of pixels respectively disposed in a plurality of pixel regions defined by intersections between 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 disposed adjacent to the pixel electrode and supplied with a common voltage.

[0071] The first substrate may further include a pad portion disposed at the first periphery (or the first non-display portion) and a gate driving circuit disposed at the second periphery (or the second non-display portion).

[0072] The pad portion can supply signals supplied from the outside to the pixel array and / or the gate drive circuit. For example, the pad portion may include multiple data pads connected to multiple data lines via multiple data link lines and / or multiple gate input pads connected to the gate drive circuit via gate control signal lines. For example, the size of the first substrate may be larger than that of the second substrate, but embodiments of this disclosure are not limited thereto.

[0073] The gate driving circuit can be embedded (or integrated) into the second periphery of the first substrate to connect to multiple gate lines. For example, the gate driving circuit can be implemented as a shift register including transistors formed using the same process as the TFTs disposed in the pixel region. In another embodiment of this disclosure, the gate driving circuit may not be embedded in the first substrate, but can be included as an integrated circuit (IC) in the panel driving circuit.

[0074] The second substrate can be a lower substrate or a color filter array substrate. For example, the second substrate may include a pixel aperture pattern comprising an aperture region overlapping with a pixel region formed in the first substrate, and a color filter layer formed at the aperture region. The second substrate may have a smaller size than the first substrate, but embodiments of this disclosure are not limited thereto. For example, the second substrate may overlap with the remainder of the upper substrate, excluding the first periphery. A sealant can be used to attach the second substrate to the remainder of the first substrate, excluding the first periphery, with a liquid crystal layer therebetween.

[0075] A liquid crystal layer may be disposed between a first substrate and a second substrate. The liquid crystal layer may comprise a liquid crystal containing liquid crystal molecules, wherein the alignment orientation of the liquid crystal molecules changes based on an electric field generated by a common voltage and a data voltage applied to the pixel electrode of each pixel.

[0076] The second polarizing member can be disposed on the lower surface of the second substrate and can polarize the light incident from the backlight and traveling in parallel to the liquid crystal layer. The first polarizing member can be disposed on the upper surface of the first substrate and can polarize the light that passes through the first substrate and is output to the outside.

[0077] The display panel 100 according to embodiments of the present disclosure can drive the liquid crystal layer based on the electric field generated in each pixel by the data voltage and common voltage applied to each pixel, and thus can display images based on light passing through the liquid crystal layer.

[0078] In another embodiment of the display panel 100 according to the present disclosure, the first substrate may be implemented as a color filter array substrate, and the second substrate may be implemented as a TFT array substrate. For example, the display panel 100 according to another embodiment of the present disclosure may have a type in which the upper and lower portions of the display panel according to the embodiment of the present disclosure are reversed therebetween. For example, the pad portion of the display panel according to another embodiment of the present disclosure may be covered by a separate mechanism or a separate structure.

[0079] According to another embodiment of the present disclosure, the display panel 100 may include a curved portion that can be bent or folded to have a bent shape or a specific radius of curvature.

[0080] The curved portion of the display panel 100 can be implemented in at least one or more of one edge and another edge of the display panel 100 that are parallel to each other. One edge and / or the other edge of the display panel 100 that implements the curved portion may include only the non-display area IA, or may include the edge of the display area AA and the non-display area IA. A display panel including a curved portion implemented by bending the non-display area IA may have a one-sided bezel curved structure or a double-sided bezel curved structure. Furthermore, a display panel 100 including a curved portion implemented by bending the edge of the display area AA and the non-display area IA may have a one-sided active curved structure or a double-sided active curved structure.

[0081] The vibration device 200 can vibrate the display panel 100 at the rear surface of the display panel 100, thereby providing the user with sound and / or tactile feedback based on the vibration of the display panel 100. The vibration device 200 can be implemented at the rear surface of the display panel 100 to directly vibrate the display panel 100.

[0082] According to embodiments of this disclosure, the vibration device 200 can vibrate in accordance with a vibration drive signal synchronized with an image displayed on the display panel 100, thereby causing the display panel 100 to vibrate. In another embodiment of this disclosure, the vibration device 200 can vibrate in accordance with a tactile feedback signal synchronized with a user touch applied to a touch panel (or touch sensor layer) disposed on or embedded in the display panel 100, and can cause the display panel 100 to vibrate. Therefore, the display panel 100 can vibrate based on the vibration of the vibration device 200 to provide at least one or more of auditory and tactile feedback to the user (or viewer).

[0083] The vibration device 200 according to embodiments of this disclosure can be implemented with a size corresponding to the display area AA of the display panel 100. The size of the vibration device 200 can be 0.9 to 1.1 times the size of the display area AA, but embodiments of this disclosure are not limited thereto. For example, the size of the vibration device 200 can be equal to or smaller than the size of the display area AA. For example, the size of the vibration device 200 can be the same as or approximately the same as the display area AA of the display panel 100. Therefore, the vibration device 200 can cover most of the display panel 100, and the vibration generated by the vibration device 200 can cause the entire display panel 100 to vibrate. Therefore, the sound localization can be high, and user satisfaction can be improved. Furthermore, the contact area (or panel coverage) between the display panel 100 and the vibration device 200 can be increased, thus increasing the vibration area of ​​the display panel 100, thereby improving the sound of the mid-to-low pitch bands generated by the vibration of the display panel 100. Furthermore, the vibration device 200 applied to a large-size display device can vibrate the entire display panel 100, which has a large size (or large area). Therefore, the localization of sound based on the vibration of the display panel 100 can be further enhanced, thereby achieving improved sound effects. Thus, the vibration device 200 according to an embodiment of this disclosure can be disposed on the rear surface of the display panel 100 to fully vibrate the display panel 100 in the vertical direction (or front-to-back direction), thereby outputting sound to the device or the forward area in front of the display device.

[0084] The vibration device 200 according to embodiments of this disclosure can be implemented as a membrane. Since the vibration device 200 can be implemented as a membrane, it can have a thinner thickness than the display panel 100, and therefore, due to the arrangement of the vibration device 200, the increase in the thickness of the display device can be minimized. For example, the vibration device 200 can use the display panel 100 as a sound resonator. For example, the vibration device 200 can be referred to as a sound generating module, a sound generating device, a membrane actuator, a membrane-type piezoelectric composite actuator, a membrane loudspeaker, a membrane-type piezoelectric loudspeaker, a membrane-type piezoelectric composite loudspeaker, etc., but embodiments of this disclosure are not limited thereto. For example, the display panel 100 can be a display panel including pixels configured to display images or a screen panel onto which an image is to be projected from the display device, but embodiments of this disclosure are not limited thereto. As another embodiment of this disclosure, the vibration device 200 may not be disposed on the rear surface of the display panel 100, and may be applied to a vibrating object instead of the display panel 100. For example, the vibrating object may include one or more of the following: a non-display panel, a vibrating plate, wood, plastic, glass, cloth, vehicle interior materials, vehicle windows, building ceiling materials, building windows, aircraft interior materials, and aircraft windows; however, 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 panel (or device), an inorganic light-emitting panel (or device), etc.; however, embodiments of this disclosure are not limited thereto. In this case, the vibrating object can be used as a vibrating plate, and the vibration device 200 can cause the vibrating object to vibrate to output sound.

[0085] The vibration device 200 according to embodiments of this disclosure may include at least one vibration generator 230.

[0086] Vibration generator 230 may include a piezoelectric structure (vibrating portion or piezoelectric vibrating portion) comprising piezoelectric ceramic having piezoelectric properties, but embodiments of this disclosure are not limited thereto. For example, vibration generator 230 according to embodiments of this disclosure may include piezoelectric ceramic having a perovskite crystal structure, and thus may vibrate (or mechanically displace or drive) in response to an externally applied electrical signal. For example, when a vibration drive signal (or voice signal) is applied, vibration generator 230 may alternately and repeatedly contract and expand based on the inverse piezoelectric effect of the piezoelectric structural material (vibrating portion or piezoelectric vibrating portion), and thus may displace (or vibrate or drive) in the same direction based on the bending phenomenon of alternating bending directions, thereby increasing or maximizing the displacement (or bending force) or amplitude displacement of vibration device 200 and / or display panel 100.

[0087] Alternatively, in another embodiment of the vibration device 200 according to this disclosure, a plurality of vibration generators may overlap or stack to shift (or vibrate or drive) in the same direction. For example, in the state where the plurality of vibration generators overlap or stack, each of the plurality of vibration generators may contract or expand in the same driving direction (or shifting direction) based on a vibration driving signal, so that the amount of shift (or bending force) or amplitude shift may be increased or may be maximized. Therefore, since the plurality of vibration generators increase (or maximize) the amount of shift (or bending force) or amplitude shift of the display panel 100, the sound pressure level characteristics and the sound characteristics of the mid-to-low pitch vocal cords generated by the vibration of the display panel 100 may be enhanced. For example, since the plurality of vibration generators are implemented to overlap or stack along the same driving direction, the driving force of each of the plurality of vibration generators may be increased or may be maximized, so that the sound pressure level characteristics generated by the display panel 100 based on the vibration of the plurality of vibration generators may be enhanced.

[0088] The display device according to embodiments of the present disclosure may further include a connecting member 150 disposed between the vibration generator 230 and the display panel 100.

[0089] According to embodiments of this disclosure, the connecting member 150 may include at least one base member and may include an adhesive layer attached to one or both surfaces of the base member.

[0090] According to embodiments of this disclosure, the connecting member 150 may include a material comprising an adhesive layer having good adhesion or bonding force with respect to the vibration generator 230. For example, the connecting member 150 may include a foam pad, double-sided tape, double-sided foam tape, or adhesive, but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include an epoxy-based polymer, an acrylic polymer, a silicone polymer, or a urethane-based polymer, but embodiments of this disclosure are not limited thereto.

[0091] According to another embodiment of this disclosure, the connecting member 150 may include one or more of thermosetting adhesives, photocuring adhesives, and thermal bonding adhesives. For example, the connecting member 150 may include a thermal bonding adhesive. The thermal bonding adhesive may be thermoactive or thermosetting. For example, the connecting member 150 including the thermal bonding adhesive can attach or couple the vibration generator 230 to the display panel 100 to each other by heat and pressure.

[0092] The connecting member 150 can be disposed between the rear surface (or back side surface) of the display panel 100 and the vibration device 200, and can connect or couple the vibration device 200 to the rear surface of the display panel 100. For example, the vibration device 200 can be connected or coupled to the rear surface of the display panel 100 via the connecting member 150, and can therefore be supported by or disposed on the rear surface of the display panel 100.

[0093] The connecting member 150 according to embodiments of this disclosure may include a material comprising an adhesive layer having good adhesion or bonding force with respect to the rear surface of the display panel 100 and each of the vibration devices 200. For example, the connecting member 150 may include a foam pad, double-sided tape, double-sided foam tape, adhesive, etc., but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include an epoxy polymer, an acrylic polymer, a silicone polymer, or a urethane-based polymer, but embodiments of this disclosure are not limited thereto. For example, the adhesive layer of the connecting member 150 may include an acrylic material, which has relatively better adhesion and hardness than acrylic and urethane. Therefore, vibrations from the vibration devices 200 can be well transmitted to the display panel 100.

[0094] According to another embodiment of this disclosure, the connecting member 150 may further include a hollow portion disposed between the display panel 100 and the vibration device 200. The hollow portion of the connecting member 150 can provide an air gap between the display panel 100 and the vibration device 200. Due to the air gap, sound waves (or sound pressure levels) based on the vibration of the vibration device 200 can be prevented from being dispersed by the connecting member 150 and can be concentrated on the display panel 100. Therefore, vibration loss caused by the connecting member 150 can be minimized, thereby enhancing the sound pressure level characteristics of the sound generated based on the vibration of the display panel 100.

[0095] The device according to embodiments of the present disclosure may further include a support member 300 disposed on the rear surface of the display panel 100.

[0096] The support member 300 may cover the rear surface of the display panel 100. For example, the support member 300 may cover the entire rear surface of the display panel 100, with a gap space GS between them. The support member 300 may include at least one or more materials selected from glass, metal, and plastic. For example, the support member 300 may be a rear surface structure or a complete structure. For example, the support member 300 may be referred to by other terms such as cover bottom, panel bottom, back cover, base frame, metal frame, metal chassis, chassis base, intermediate chassis, etc. For example, the support member 300 may be implemented as any type of frame or plate-like structure disposed on the rear surface of the display panel 100.

[0097] The device according to embodiments of this disclosure may also include an intermediate frame 400.

[0098] An intermediate frame 400 may be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300. The intermediate frame 400 may support one or more of the rear periphery of the display panel 100 and the front periphery of the support member 300, and may surround one or more side surfaces of each of the display panel 100 and the support member 300. The intermediate frame 400 may provide a clearance space GS between the display panel 100 and the support member 300. The intermediate frame 400 may be referred to as an intermediate housing, intermediate cover, or intermediate chassis, etc., but embodiments of this disclosure are not limited thereto.

[0099] The intermediate frame 400 according to an embodiment of the present disclosure may include a first support portion 410 and a second support portion 430.

[0100] The first support portion 410 can be disposed between the rear periphery of the display panel 100 and the front periphery of the support member 300, and thus can provide a clearance space GS between the display panel 100 and the support member 300. The front surface of the first support portion 410 can be coupled or connected to the rear periphery of the display panel 100 via the first frame connecting member 401. The rear surface of the first support portion 410 can be coupled or connected to the front periphery of the support member 300 via the second frame connecting member 403. For example, the first support portion 410 can have a single picture frame structure in a square shape or multiple frame structures in a segmented shape, but the embodiments of this disclosure are not limited thereto.

[0101] The second support portion 430 can be vertically coupled to the outer surface of the first support portion 410 parallel to the thickness direction Z of the device. The second support portion 430 can surround one or more of the outer surfaces of the display panel 100 and the support member 300, thereby protecting the outer surface of each of the display panel 100 and the support member 300. The first support portion 410 can protrude from the inner surface of the second support portion 430 toward the gap space GS between the display panel 100 and the support member 300.

[0102] Figure 3 It is along Figure 1 Another cross-sectional view taken by line I-I' shown. Figure 3 It shows how to modify Figure 2 The embodiment is implemented using the vibration device shown. Therefore, in the following description, repeated descriptions of elements other than the vibration device and its associated components may be omitted or will be given briefly.

[0103] Reference Figure 1 and Figure 3 In another embodiment of the device according to this disclosure, the display panel 100 may include a first rear region RA1 and a second rear region RA2. For example, the first rear region RA1 may be a right rear region, and the second rear region RA2 may be a left rear region. The first rear region RA1 and the second rear region RA2 may be symmetrical about each other in a first direction X with respect to the center line CL of the display panel 100, but the embodiments of this disclosure are not limited thereto. For example, each of the first rear region RA1 and the second rear region RA2 may overlap with the display area AA of the display panel 100.

[0104] According to another embodiment of the present disclosure, the vibration device (or vibration generating device) 200 may include a first vibration generating device 200-1 and a second vibration generating device 200-2.

[0105] The first vibration generating device 200-1 can be disposed at the first rear region RA1 of the display panel 100. Based on the characteristics of the first sound or the sound characteristics required by the device, the size of the first vibration generating device 200-1 can be the same as or smaller than the first rear region RA1 of the display panel 100. For example, the first vibration generating device 200-1 can be disposed near the center or periphery of the first rear region RA1 of the display panel 100 relative to the first direction X.

[0106] According to embodiments of this disclosure, the first vibration generating device 200-1 can cause the first rear region RA1 of the display panel 100 to vibrate, and thus can generate a first sound, at least one of a first vibration sound and a first orientation vibration sound, and a first tactile feedback. For example, the first vibration generating device 200-1 can directly cause the first rear region RA1 of the display panel 100 to vibrate, and thus can generate a first sound in the first rear region RA1 of the display panel 100. For example, the first sound may be a right sound.

[0107] The second vibration generating device 200-2 can be disposed at the second rear region RA2 of the display panel 100. Based on the characteristics of the second sound or the sound characteristics required by the device, the size of the second vibration generating device 200-2 can be the same as or smaller than the second rear region RA2 of the display panel 100. For example, the second vibration generating device 200-2 can be disposed near the center or periphery of the second rear region RA2 of the display panel 100 relative to the first direction X.

[0108] According to embodiments of this disclosure, the second vibration generating device 200-2 can cause the second rear region RA2 of the display panel 100 to vibrate, and thus can generate a second sound and a second tactile feedback, at least one of a second vibration sound and a second orientation vibration sound. For example, the second vibration generating device 200-2 can directly cause the second rear region RA2 of the display panel 100 to vibrate, and thus can generate a second sound in the second rear region RA2 of the display panel 100. For example, the second sound may be a left sound.

[0109] Based on the sound characteristics of the left and right sounds and / or the sound characteristics of the device, the first vibration generating device 200-1 and the second vibration generating device 200-2 may have the same or different dimensions. Thus, the first vibration generating device 200-1 and the second vibration generating device 200-2 may be arranged in a left-right symmetrical or left-right asymmetrical structure relative to the center line CL of the display panel 100.

[0110] Each of the first vibration generating device 200-1 and the second vibration generating device 200-2 may include the above reference. Figure 1 and Figure 2 The vibrating devices are described, and therefore, repeated descriptions of them can be omitted.

[0111] Each of the first vibration generating device 200-1 and the second vibration generating device 200-2 can be disposed on the rear surface of the display panel 100 via a connecting member 150. The connecting member 150 can be connected to the aforementioned reference... Figure 2The described connecting member 150 is substantially the same, and therefore, its repeated description can be omitted.

[0112] According to another embodiment of the present disclosure, the device (or display device) can output left and right sounds to the forward area in front of the display panel 100 through the first vibration generating device 200-1 and the second vibration generating device 200-2. The sound generated based on the vibration of each of the first vibration generating device 200-1 and the second vibration generating device 200-2 can be concentrated or focused in a specific direction. Therefore, the user's privacy protection function can be realized: the sound is not heard in the peripheral area (or inaudible area) outside the area (or the area that can be heard) along a specific direction.

[0113] According to another embodiment of the present disclosure, the device may further include a plate 170 disposed between the display panel 100 and the vibration device 200.

[0114] Plate 170 may have the same shape and size as the rear surface of display panel 100, or it may have the same shape and size as vibration device 200. As another embodiment of this disclosure, plate 170 may have a different size than display panel 100. For example, plate 170 may be smaller than the size of display panel 100. As another embodiment of this disclosure, plate 170 may have a different size than vibration device 200. For example, plate 170 may be larger or smaller than the size of vibration device 200. Vibration device 200 may have the same size as or smaller than the size of display panel 100.

[0115] Plate 170 can be coupled or connected to the rear surface of display panel 100 via plate coupling member (or coupling member or connecting member) 190. Therefore, vibration device 200 can be connected or coupled to the rear surface of plate 170 via connecting member 150, and thus can be supported or suspended at the rear surface of plate 170.

[0116] The plate 170 according to embodiments of this disclosure 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 formed along a first direction X and a second direction Y to have predetermined dimensions and predetermined intervals. Due to the plurality of openings, sound waves (or sound pressure) based on the vibration of the vibrating device 200 may not be dispersed by the plate 170 and may be concentrated on the display panel 100. Therefore, vibration loss caused by the plate 170 can be minimized, thereby enhancing the sound pressure level characteristics of sound generated based on the vibration of the display panel 100 (or vibrating object or vibrating member). For example, the plate 170 including the plurality of openings may have a mesh shape. For example, the plate 170 including the plurality of openings may be a mesh plate.

[0117] The plate 170 according to embodiments of this disclosure may include a metallic material. For example, the plate 170 may include any one or more materials such as stainless steel, aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum alloy, but embodiments of this disclosure are not limited thereto. Therefore, the plate 170 can be used as a heat plate to dissipate heat generated in the display panel 100.

[0118] According to embodiments of this disclosure, a plate 170 comprising a metallic material can increase the mass of the vibrating device 200 disposed on or suspended from the rear surface of the display panel 100. Therefore, the plate 170 can reduce the resonant frequency of the vibrating device 200 based on the increased mass of the vibrating device 200. Thus, the plate 170 can enhance 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 deviation between the highest and lowest sound pressure levels. For example, the plate 170 can be referred to as a weight member, a mass member, or a sound flattening member, etc., but embodiments of this disclosure are not limited thereto.

[0119] Figure 4 This is a cross-sectional view showing a vibration member and a vibration device at the rear surface of the vibration member according to an embodiment of the present disclosure.

[0120] Reference Figure 4 The vibration device according to the embodiments of the present disclosure may include a display panel 100 and a vibration device 211 disposed on the rear surface of the display panel (or vibration member) 100.

[0121] The vibration device 211 may include a vibration portion 211a, a first electrode portion 211c disposed on a first surface or upper surface of the vibration portion 211a, a second electrode portion 211b disposed on a second surface opposite to the first surface, a first cover member 214 disposed on the first surface of the vibration portion 211a, and a second cover member 215 disposed on the second surface of the vibration portion 211a. The vibration device 211 may include a first adhesive layer 212 and a second adhesive layer 213 disposed between the first cover member 214 and the second cover member 215 and surrounding the vibration device 200. The first adhesive layer 212 may be disposed on the first surface of the vibration portion 211a, and the second adhesive layer 213 may be disposed on the second surface of the vibration portion 211a.

[0122] For example, each of the first cover member 214 and the second cover member 215 may be a polyimide (PI) film or a polyethylene terephthalate (PET) film, but embodiments of this disclosure are not limited thereto.

[0123] Each of the first adhesive layer 212 and the second adhesive layer 213 may include an electrically insulating material. For example, the electrically insulating material may be adhesive and may include a material capable of compression and decompression. For example, one or more of the first adhesive layer 212 and the second adhesive layer 213 may include epoxy resin, acrylic resin, silicone resin, or urethane resin, but embodiments of this disclosure are not limited thereto.

[0124] The device or vibration device 200 according to embodiments of this disclosure may further include a connecting member 150 disposed between the display panel 100 and the vibration device 211. The connecting member 150 may include an electrically insulating material. For example, the electrically insulating material may be adhesive and may include materials capable of compression and decompression. For example, the connecting member 150 may include epoxy resin, acrylic resin, silicone resin, or urethane resin, but embodiments of this disclosure are not limited thereto.

[0125] The vibrating portion 211a can be configured as multiple inorganic material portions. For example, the inorganic material portions can be configured as ceramic-based materials for generating higher vibrations, or as piezoelectric ceramics with a perovskite-based crystal structure. The perovskite crystal structure can exhibit both piezoelectric and inverse piezoelectric effects and can be an oriented plate-like structure. The perovskite crystal structure can be represented by the chemical formula "ABO3". In the chemical formula, "A" can include a divalent metal element, and "B" can include a tetravalent metal element. For example, in the chemical formula "ABO3", "A" and "B" can be cations, and "O" can be anion.

[0126] The vibrating part 211a can be configured with a first vibrating part 211a1 and a second vibrating part 211a2 having different physical properties. Here, the different physical properties can represent complementary physical properties. For example, the first vibrating part 211a1 may include a material with a high mechanical quality factor Qm, and the second vibrating part 211a2 may include a material with a high voltage coefficient d33. Figure 4 As shown, the first vibration portion 211a1 and the second vibration portion 211a2 can be arranged alternately along the first direction X. For example, a plurality of first vibration portions 211a1 and a plurality of second vibration portions 211a2 can be arranged alternately and repeatedly along the first direction. For example, the structure of the vibration portion 211a according to the embodiments of the present disclosure can be a striped pattern structure or a checkerboard structure, but the embodiments of the present disclosure are not limited thereto.

[0127] The first vibration part 211a1 may include an inorganic material part expressed as in Formula 1.

[0128] [Formula 1]

[0129]

[0130] The first vibrational component 211a1, expressed as Equation 1, may include a material with a high mechanical quality factor Qm. The mechanical quality factor Qm can be represented as the reciprocal of the mechanical losses generated in the vibrational component during energy conversion and can be defined as the losses of the vibrational component.

[0131] The second vibration part 211a2 may include an inorganic material part expressed as in Formula 2.

[0132] [Equation 2]

[0133]

[0134] The second vibrational part 211a2, expressed as Equation 2, may include a material with a piezoelectric constant d33. The piezoelectric constant can be defined as the deformation modulus of a piezoelectric material based on an electric field.

[0135] The vibration device 200 or vibration apparatus 211 according to embodiments of this disclosure may include a composite of a material having a high mechanical quality factor and a material having a high piezoelectric constant, and therefore, mechanical strength can be enhanced. Compared to the case where only a material having a high piezoelectric constant is used, the vibration device 200 or vibration apparatus 211 according to embodiments of this disclosure may include a composite of a material having a high mechanical quality factor and a material having a high piezoelectric constant, and therefore, the conversion of mechanical losses during electrical energy conversion can be reduced, or heat can be reduced, thereby preventing high temperatures in the vibration device. Furthermore, the vibration device 200 or vibration apparatus 211 according to embodiments of this disclosure may include a composite of a material having a high mechanical quality factor and a material having a high piezoelectric constant, and therefore, vibrations corresponding to low frequencies can be achieved based on the piezoelectric constant, and tactile textures can be simultaneously achieved based on the high mechanical quality factor.

[0136] Figure 5 This is a cross-sectional view showing a vibrating member and a vibrating device at the rear surface of the vibrating member according to another embodiment of the present disclosure. Except for the modification of the structure of only the vibrating portion 211a, Figure 5 Vibration equipment can be configured to work with Figure 4 The vibration equipment is the same.

[0137] Reference Figure 5The vibration device 200 according to embodiments of the present disclosure may include a vibration device 211 disposed on the rear surface of the display panel 100. The vibration device 211 may include a vibration portion 211a. The vibration portion 211a of the vibration device 211 may be configured in a stacked structure. For example, a first vibration portion 211a1 may be disposed adjacent to the display panel 100, a second vibration portion 211a2 may subsequently be disposed on the rear surface of the first vibration portion 211a1, and another first vibration portion 211a1 may subsequently be disposed on the rear surface of the second vibration portion 211a2. For example, the second vibration portion 211a2 may be disposed or inserted between the first vibration portion 211a1 and another first vibration portion 211a1 relative to the thickness direction Z of the vibration device 200. Furthermore, each of the sequentially stacked first vibration portion 211a1, second vibration portion 211a2, and first vibration portion 211a1 may be configured to have the same thickness, but embodiments of the present disclosure are not limited thereto. According to embodiments of the present disclosure, another first vibration portion 211a1 may be provided at the outer portion of the first vibration portion 211a1, and thus the durability of the first vibration portion 211a1 may be enhanced.

[0138] Figure 6 The vibration portion according to an embodiment of this disclosure is shown.

[0139] Reference Figure 6 The vibration portion 211a according to an embodiment of the present disclosure may include a first vibration portion 211a1 and a second vibration portion 211a2. For example, a plurality of first vibration portions 211a1 and a plurality of second vibration portions 211a2 may be arranged alternately and repeatedly along a first direction X. A plurality of first vibration portions 211a1 and a plurality of second vibration portions 211a2 may be arranged alternately and repeatedly along a second direction Y. In the structure of the vibration portion 211a according to an embodiment of the present disclosure, since a plurality of first vibration portions 211a1 and a plurality of second vibration portions 211a2 are arranged alternately along a first direction X and a second direction Y, the first vibration portion 211a1 may be arranged in such a way that the first vibration portion 211a1 shares an angle with another first vibration portion 211a1 that is closest to it in the diagonal direction. Furthermore, the second vibration portion 211a2 may be arranged in such a way that the second vibration portion 211a2 shares an angle with another second vibration portion 211a2 that is closest to it in the diagonal direction. The first vibration portion 211a1 and the second vibration portion 211a2 may have a first length L1 in the first direction X, and the first vibration portion 211a1 and the second vibration portion 211a2 may have a second length L2 in the second direction Y.

[0140] The plurality of first vibrating parts 211a1 may include the same material as the piezoelectric material represented by Formula 1 above, and the plurality of second vibrating parts 211a2 may include the same material as the piezoelectric material represented by Formula 2 above.

[0141] Figure 7A and Figure 7B A vibration portion according to another embodiment of this disclosure is shown.

[0142] Reference Figure 7A and Figure 7B The vibration portion 211a according to embodiments of the present disclosure may include a plurality of first vibration portions 211a1 and a plurality of second vibration portions 211a2. For example, the plurality of first vibration portions 211a1 and the plurality of second vibration portions 211a2 may be alternately and repeatedly arranged along a first direction X (or a second direction Y). For example, the first direction X may be the width direction of the vibration portion 211a, and the second direction Y may be the length direction of the vibration portion 211a intersecting the first direction X, but embodiments of the present disclosure are not limited thereto. For example, the first direction X may be the length direction of the vibration portion 211a, and the second direction Y may be the width direction of the vibration portion 211a. The plurality of first vibration portions 211a1 may include the same material as the piezoelectric material represented by Formula 1 above. The plurality of second vibration portions 211a2 may include the same material as the piezoelectric material represented by Formula 2 above.

[0143] In the vibrating portion 211a, each of the plurality of first vibrating portions 211a1 and the plurality of second vibrating portions 211a2 can be arranged (or arranged) in parallel on the same plane (or the same layer). Each of the plurality of second vibrating portions 211a2 can be configured to fill the gap between two adjacent first vibrating portions 211a1 that can be connected to or attached to an adjacent first vibrating portion 211a1. Therefore, the vibrating portion 211a can extend to a desired size or length based on the side coupling (or connection) of the first vibrating portions 211a1 and the second vibrating portions 211a2.

[0144] A plurality of first vibrating portions 211a1 and a plurality of second vibrating portions 211a2 may be arranged alternately and repeatedly along a second direction Y. Each of the plurality of first vibrating portions 211a1 may be disposed between the plurality of second vibrating portions 211a2. For example, each of the plurality of first vibrating portions 211a1 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 vibrating portions 211a2 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 may be the same as or different from the second width W2. For example, the first width W1 may be the same as the second width W2. Figure 7A The first width W1 shown can be the same as the second width W2, as shown below. Figure 7B The first width W1 shown can be smaller than the second width W2. For example, the first vibrating portion 211a1 and the second vibrating portion 211a2 can include line shapes or stripe shapes with the same or different dimensions. Figure 7A and Figure 7B In the vibration portion 211a shown, the width (or size) W2 of each of the plurality of second vibration portions 211a2 can gradually decrease in the direction from the center portion of the vibration portion 211a or the vibration device to the two outer peripheries (or ends).

[0145] exist Figure 7A and Figure 7B The diagram shows a first vibrating portion 211a1 disposed at the outermost part along the first direction X, but embodiments of this disclosure are not limited thereto. Therefore, in this disclosure, a vibration device 211 in which a second vibrating portion 211a2 is disposed at the outermost part can be included within the scope of this disclosure.

[0146] Figures 8A to 8D This is a cross-sectional view showing a vibrating member according to an embodiment of the present disclosure and a vibrating device at the rear surface of the vibrating member. Except for modifications to the structure of only the vibrating device 211, Figures 8A to 8D Vibration equipment can be configured to work with Figure 5 The vibration equipment is the same.

[0147] Reference Figure 8AIn another embodiment of the vibration device 200 according to this disclosure, the vibration portion 211a of the vibration device 211 can be configured as a stacked structure. For example, a first vibration portion 211a1 can be disposed adjacent to the display panel 100, a second vibration portion 211a2 can subsequently be disposed on the rear surface of the first vibration portion 211a1, and another first vibration portion 211a1 can subsequently be disposed on the rear surface of the second vibration portion 211a2. For example, the second vibration portion 211a2 can be disposed or inserted between the first vibration portion 211a1 and another first vibration portion 211a1 relative to the thickness direction Z of the vibration device 200. Therefore, Figure 8A The vibrating portion 211a can be configured such that a first vibrating portion 211a1, a second vibrating portion 211a2, and another first vibrating portion 211a1 are sequentially disposed on the rear surface of the display panel 100. Each of the first vibrating portion 211a1 and the other first vibrating portion 211a1 can be configured to have a first thickness, and the second vibrating portion 211a2 can be configured to have a second thickness. The second thickness can be configured to be 8 times the first thickness. Furthermore, the first vibrating portion 211a1 and the second vibrating portion 211a2 are relative to each other. Figure 8A The volume ratio of all vibrating parts 211 can be 2:8 (or 20%:80%).

[0148] Reference Figure 8B In another embodiment of the vibration device 200 according to this disclosure, the vibration portion 211a of the vibration device 211 can be configured as a stacked structure. For example, a first vibration portion 211a1 can be disposed adjacent to the display panel 100, a second vibration portion 211a2 can subsequently be disposed on the rear surface of the first vibration portion 211a1, and another first vibration portion 211a1 can subsequently be disposed on the rear surface of the second vibration portion 211a2. For example, the second vibration portion 211a2 can be disposed or inserted between the first vibration portion 211a1 and another first vibration portion 211a1 relative to the thickness direction Z of the vibration device 200. Therefore, Figure 8B The vibrating portion 211a can be configured such that a first vibrating portion 211a1, a second vibrating portion 211a2, and another first vibrating portion 211a1 are sequentially disposed on the rear surface of the display panel 100. Each of the first vibrating portion 211a1 and the other first vibrating portion 211a1 can be configured to have a first thickness, and the second vibrating portion 211a2 can be configured to have a second thickness. The second thickness can be configured to be 1.5 times the first thickness. Furthermore, the first vibrating portion 211a1 and the second vibrating portion 211a2 are relative to each other. Figure 8BThe volume ratio of all vibrating parts 211 can be 4:6 (or 40%:60%).

[0149] Reference Figure 8C In another embodiment of the vibration device 200 according to this disclosure, the vibration portion 211a of the vibration device 211 can be configured as a stacked structure. For example, a first vibration portion 211a1 can be disposed adjacent to the display panel 100, a second vibration portion 211a2 can subsequently be disposed on the rear surface of the first vibration portion 211a1, and another first vibration portion 211a1 can subsequently be disposed on the rear surface of the second vibration portion 211a2. For example, the second vibration portion 211a2 can be disposed or inserted between the first vibration portion 211a1 and another first vibration portion 211a1 relative to the thickness direction Z of the vibration device 200. Therefore, Figure 8C The vibrating portion 211a can be configured such that a first vibrating portion 211a1, a second vibrating portion 211a2, and another first vibrating portion 211a1 are sequentially disposed on the rear surface of the display panel 100. Each of the first vibrating portions 211a1 can be configured to have a first thickness, and the second vibrating portion 211a2 can be configured to have a second thickness. When the second thickness is set to 40% of the total thickness of the vibrating portions 211a, the first thickness can be set to 30% of the total thickness of the vibrating portions 211a. Furthermore, the first vibrating portions 211a1 and the second vibrating portions 211a2 are relative to each other. Figure 8C The volume ratio of all vibrating parts 211 can be 6:4 (or 60%:40%).

[0150] Reference Figure 8D In another embodiment of the vibration device 200 according to this disclosure, the vibration portion 211a of the vibration device 211 can be configured as a stacked structure. For example, a first vibration portion 211a1 can be disposed adjacent to the display panel 100, a second vibration portion 211a2 can be subsequently disposed on the rear surface of the first vibration portion 211a1, and the first vibration portion 211a1 can be subsequently disposed on the rear surface of the second vibration portion 211a2. For example, the second vibration portion 211a2 can be disposed or inserted between the first vibration portion 211a1 and another first vibration portion 211a1 relative to the thickness direction Z of the vibration device 200. Therefore, Figure 8DThe vibrating portion 211a can be configured such that a first vibrating portion 211a1, a second vibrating portion 211a2, and another first vibrating portion 211a1 are sequentially disposed on the rear surface of the display panel 100. Each of the first vibrating portions 211a1 can be configured to have a first thickness, and the second vibrating portion 211a2 can be configured to have a second thickness. The second thickness can be configured to be 0.5 times the first thickness. Furthermore, the first vibrating portions 211a1 and the second vibrating portions 211a2 are relative to each other. Figure 8D The volume ratio of all vibrating parts 211 can be 8:2 (or 80%:20%).

[0151] Figure 9 This is a cross-sectional view showing a vibrating member and a vibrating device at the rear surface of the vibrating member according to another embodiment of the present disclosure. Except for the modification of the structure of only the vibrating device 211, Figure 9 Vibration equipment can be configured to work with Figure 5 The vibration equipment is the same.

[0152] Reference Figure 9 According to another embodiment of the present disclosure, the vibration device 200 may include a vibration mechanism 211 disposed on the rear surface of the display panel 100. The vibration mechanism 211 may include a vibration portion 211a. The vibration portion 211a of the vibration mechanism 211 may be configured as a stacked structure. For example, a first vibration portion 211a1 may be disposed adjacent to the display panel 100, a second vibration portion 211a2 may subsequently be disposed on the rear surface of the first vibration portion 211a1, another first vibration portion 211a1 may subsequently be disposed on the rear surface of the second vibration portion 211a2, another second vibration portion 211a2 may subsequently be disposed on the rear surface of another first vibration portion 211a1, and another first vibration portion 211a1 may subsequently be disposed on the rear surface of another second vibration portion 211a2. Each of the first vibration portions 211a1 and each of the second vibration portions 211a2 may be configured to have the same thickness or different thicknesses. Furthermore, each of the sequentially stacked first vibration portion 211a1, second vibration portion 211a2, and first vibration portion 211a1 can be configured to have the same thickness, but embodiments of the present disclosure are not limited thereto. According to embodiments of the present disclosure, the first vibration portion 211a1 can be provided at the outer portion of the first vibration portion 211a1, and therefore, the durability of the first vibration portion 211a1 can be enhanced.

[0153] Figures 10A to 10D This is a graph showing the dielectric constant, electromechanical coupling coefficient, mechanical quality factor, and piezoelectric constant of a vibration device according to embodiments of this disclosure. Figures 10A to 10DIn the first implementation method, it can be in Figure 8A The vibration device prepared under the conditions, the second embodiment can be in Figure 8B The vibration device prepared under the conditions, the third embodiment can be in Figure 8C The vibration device is prepared under the conditions described above, and the fourth embodiment can be in the following conditions: Figure 8D The vibration device was prepared under the specified conditions. In each of the vibration devices prepared according to the first to fourth embodiments, the dielectric constant, electromechanical coupling coefficient, mechanical quality factor, and piezoelectric constant were measured.

[0154] Reference Figure 10A The dielectric constant of the vibration device prepared according to the first embodiment has been measured to be approximately 2,100, and the dielectric constant of the vibration device prepared according to the second embodiment has been measured to be approximately 2,160. The dielectric constant of the vibration device prepared according to the third embodiment has been measured to be approximately 1,930, and the dielectric constant of the vibration device prepared according to the fourth embodiment has been measured to be approximately 1,850. (Refer to...) Figure 10A The measurement results show that in the vibration part 211a of the vibration device, the dielectric constant changes based on the relative ratio of the first vibration part 211a1 to the second vibration part 211a2. For example, it can be seen that when the relative ratio of the first vibration part 211a1 increases, the value of the dielectric constant decreases, while when the relative ratio of the second vibration part 211a2 increases, the value of the dielectric constant increases.

[0155] Reference Figure 10B The electromechanical coupling coefficient Kp of the vibration device prepared according to the first embodiment has been measured to be approximately 0.60, and the electromechanical coupling coefficient Kp of the vibration device prepared according to the second embodiment has been measured to be approximately 0.60. The electromechanical coupling coefficient Kp of the vibration device prepared according to the third embodiment has been measured to be approximately 0.625, and the electromechanical coupling coefficient Kp of the vibration device prepared according to the fourth embodiment has been measured to be approximately 0.60. (Refer to...) Figure 10B The measurement results show that the electromechanical coupling coefficient can be a material constant representing the energy change efficiency. It can be seen that each of the vibration devices prepared according to the first to fourth embodiments has a relatively high electromechanical coupling coefficient close to 0.60. Therefore, it can be considered that the required piezoelectric displacement of each of the vibration devices prepared according to the first to fourth embodiments is satisfied to a certain extent.

[0156] According to embodiments of this disclosure, the electromechanical coupling coefficient of the vibration device can be greater than 0.59. According to embodiments of this disclosure, when the electromechanical coupling coefficient of the vibration device increases, the electromechanical coupling coefficient can be a material constant representing the conversion efficiency from mechanical energy to electrical energy or the conversion efficiency from input electrical energy to mechanical energy. Therefore, the vibration device according to embodiments of this disclosure can have a high energy conversion efficiency.

[0157] Reference Figure 10C The mechanical quality factor Qm of the vibration device prepared according to the first embodiment has been measured to be approximately 500, and the mechanical quality factor Qm of the vibration device prepared according to the second embodiment has been measured to be approximately 600. The mechanical quality factor Qm of the vibration device prepared according to the third embodiment has been measured to be approximately 1,000, and the mechanical quality factor Qm of the vibration device prepared according to the fourth embodiment has been measured to be approximately 1,350.

[0158] Reference Figure 10C The measurement results show that the mechanical quality factor changes based on the change in the relative ratio of the first vibration part 211a1 to the second vibration part 211a2 in the vibration part 211a of the vibration device. For example, it can be seen that when the relative ratio of the first vibration part 211a1 increases, the value of the mechanical quality factor increases, while when the relative ratio of the second vibration part 211a2 increases, the value of the mechanical quality factor decreases.

[0159] According to embodiments of this disclosure, the mechanical quality factor of the vibration device can be greater than 500. The vibration device according to embodiments of this disclosure can be configured to have a high mechanical quality factor, and therefore, the conversion of mechanical losses into electrical energy can be reduced and heat can be decreased, thereby preventing high temperatures in the vibration device.

[0160] Reference Figure 10D The piezoelectric coefficient d33 of the vibration device prepared according to the first embodiment has been measured to be approximately 610, and the piezoelectric coefficient d33 of the vibration device prepared according to the second embodiment has been measured to be approximately 585. The piezoelectric coefficient d33 of the vibration device prepared according to the third embodiment has been measured to be approximately 540, and the piezoelectric coefficient d33 of the vibration device prepared according to the fourth embodiment has been measured to be approximately 475. (Refer to...) Figure 10D The measurement results show that the piezoelectric coefficient varies based on the relative ratio of the first vibration part 211a1 to the second vibration part 211a2 in the vibration part 211a of the vibration device. For example, it can be seen that when the relative ratio of the first vibration part 211a1 increases, the value of the piezoelectric coefficient decreases, while when the relative ratio of the second vibration part 211a2 increases, the value of the piezoelectric coefficient increases. Figure 10DAs a result, it can be seen that the value of the piezoelectric constant of the vibration device according to the embodiments of this disclosure is measured to a certain extent in proportion to the volume of the second vibration part 211a2.

[0161] According to embodiments of this disclosure, the piezoelectric constant of the vibration device can be greater than 450. In this disclosure, when the piezoelectric constant of the vibration device increases, tactile actuation of low-frequency textures within a frequency range capable of achieving low-frequency vibration can be performed. Furthermore, the low-frequency vibration value in this disclosure can have a value commensurate with the piezoelectric constant.

[0162] Table 1 illustrates the low-frequency vibration and vibration displacement of embodiments of this disclosure. In Table 1, low-frequency vibration and vibration displacement have been measured for each of the vibration devices prepared according to the first to fourth embodiments. In Table 1, low-frequency vibration can represent the result obtained by measuring the acceleration of each of the first to fourth embodiments within the frequency range of low-frequency vibration, and vibration displacement can represent the maximum displacement value of each of the vibration devices prepared according to the first to fourth embodiments. In Table 1, the first embodiment may be... Figure 8A The vibration device prepared under the conditions, the second embodiment can be in Figure 8B The vibration device prepared under the conditions, the third embodiment can be in Figure 8C The vibration device is prepared under the conditions described above, and the fourth embodiment can be in the following conditions: Figure 8D The vibration device is prepared under the following conditions. In Table 1, the low-frequency vibration frequency range can be from 200 Hz to 250 Hz, which is the frequency range used to achieve tactile feedback and transmit tactile feedback to the user. For example, the low-frequency vibration frequency range can be a frequency range within a band of 1 Hz to 250 Hz, but the low-frequency vibration frequency range of this disclosure is not limited to this. Furthermore, in Table 1, the vibration displacement or piezoelectric displacement can have a value obtained by measuring the maximum displacement at a selected frequency.

[0163] [Table 1]

[0164]

[0165] Referring to Table 1, it can be seen that low-frequency vibration represents values ​​of 1.5 G to 1.8 G in the first to fourth embodiments, and therefore it can be seen that the vibration device prepared according to the embodiments of this disclosure can be tactilely driven to achieve low-frequency textures within the frequency range of low-frequency vibration. Furthermore, referring to the low-frequency vibration measurements in Table 1 and... Figure 10D The value of the piezoelectric constant shows that the low-frequency vibration value of this disclosure has a value that is commensurate with the piezoelectric constant to a certain extent.

[0166] Furthermore, the vibration displacement was measured as 1.2 μm in the first embodiment and 1.5 μm in the second embodiment. The vibration displacement was measured as 2.1 μm in the third embodiment and 2.3 μm in the fourth embodiment. Refer to Table 1 for the vibration displacement measurements. Figure 10C The value of the mechanical quality factor shows that the vibration displacement measurement value of this disclosure has a value that is commensurate with the mechanical quality factor to a certain extent.

[0167] The vibration device according to embodiments of this disclosure can be applied to vibration devices installed in devices. Devices according to embodiments of this disclosure can be applied to mobile devices, video phones, smartwatches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, bending devices, sliding devices, variable devices, electronic notebooks, e-books, portable multimedia players (PMPs), personal digital assistants (PDAs), MP3 players, mobile medical devices, desktop personal computers (PCs), laptop PCs, netbooks, workstations, navigation devices, car navigation devices, car display devices, automotive equipment, theater equipment, theater display devices, TVs, wallpaper display devices, signage devices, gaming devices, laptop computers, monitors, cameras, portable camcorders, home appliances, etc. Furthermore, the vibration device according to embodiments of this disclosure can be applied to organic light-emitting lighting devices or inorganic light-emitting lighting devices. When the vibration device according to embodiments of this disclosure is applied to a lighting device, the lighting device can be used as both lighting and a speaker. Furthermore, when the vibration device of the embodiments of this disclosure is applied to mobile devices, the vibration device may be used as one or more of a speaker, a receiver, and a tactile component, but the embodiments of this disclosure are not limited thereto.

[0168] Vibration devices and devices including the same, according to embodiments of the present disclosure, will now be described.

[0169] A vibration device according to an embodiment of the present disclosure may include: a first vibration portion comprising a first material; and a second vibration portion disposed adjacent to the first vibration portion, the second vibration portion comprising a second material.

[0170] According to some embodiments of this disclosure, the first vibration portion and the second vibration portion can be arranged horizontally alternately.

[0171] According to embodiments of this disclosure, the first or second vibrating portion may share an angle adjacent to it in the diagonal direction of the plane.

[0172] According to some embodiments of this disclosure, the first vibration portion and the second vibration portion can be alternately arranged along a first direction, wherein the first direction can be the width direction or the length direction of the vibration portion.

[0173] According to some embodiments of the present disclosure, the first vibration portion and the second vibration portion may be alternately arranged along a first direction and may be alternately arranged along a second direction, wherein the second direction intersects the first direction.

[0174] According to embodiments of this disclosure, a first vibrating portion may share an angle with another first vibrating portion adjacent to it in the diagonal direction of the plane, and / or a second vibrating portion may share an angle with another second vibrating portion adjacent to it in the diagonal direction of the plane.

[0175] According to some embodiments of this disclosure, the first vibration portion and the second vibration portion can be configured as a layered stacked structure.

[0176] According to some embodiments of the present disclosure, the vibration device may further include: another first vibration portion comprising a first material, the first vibration portion being disposed adjacent to the rear surface of the vibration member, a second vibration portion being disposed at the rear surface of the first vibration portion, and another first vibration portion being disposed at the rear surface of the second vibration portion.

[0177] According to some embodiments of this disclosure, the first vibration portion can be expressed as Equation 1, and the second vibration portion can be expressed as Equation 2:

[0178] [Formula 1]

[0179]

[0180] [Equation 2]

[0181] .

[0182] According to some embodiments of the present disclosure, the vibration device may further include a first electrode portion and a second electrode portion, wherein each of the first vibration portion and the second vibration portion is disposed between the first electrode portion and the second electrode portion.

[0183] According to some embodiments of the present disclosure, the vibration device may further include a vibration apparatus, which may include: a vibration portion comprising a first vibration portion and a second vibration portion; a first electrode portion disposed on a first surface of the vibration portion; and a second electrode portion disposed on a second surface opposite to the first surface of the vibration portion.

[0184] According to some embodiments of this disclosure, the mechanical quality factor of the vibrating device can be greater than 500.

[0185] According to some embodiments of this disclosure, the electromechanical coupling coefficient of the vibration device can be greater than 0.59.

[0186] According to some embodiments of this disclosure, the piezoelectric constant of the vibrating device can be greater than 450.

[0187] The vibration device according to embodiments of the present disclosure may include: a vibration portion including a first vibration portion and a second vibration portion; a first electrode portion disposed on a first surface of the vibration portion; and a second electrode portion disposed on a second surface opposite to the first surface of the vibration portion, wherein the first vibration portion includes a first material, the second vibration portion includes a second material, and the second vibration portion is disposed adjacent to the first vibration portion.

[0188] According to some embodiments of this disclosure, the first vibration portion and the second vibration portion can be arranged horizontally alternately.

[0189] According to some embodiments of the present disclosure, the vibrating portion may further include: another first vibrating portion comprising a first material, wherein the first vibrating portion is disposed adjacent to the rear surface of the vibrating member, wherein a second vibrating portion is disposed at the rear surface of the first vibrating portion, and wherein another first vibrating portion is disposed at the rear surface of the second vibrating portion.

[0190] According to some embodiments of the present disclosure, the vibration device may further include: a first cover member disposed on a first surface of the vibration portion and a second cover member disposed on a second surface of the vibration portion; and a first adhesive layer disposed on the first surface of the vibration portion and a second adhesive layer disposed on the second surface of the vibration portion, wherein each of the first adhesive layer and the second adhesive layer is disposed between the first cover member and the second cover member, and the combination of the first adhesive layer and the second adhesive layer surrounds the vibration portion, the first electrode portion and the second electrode portion.

[0191] According to some embodiments of this disclosure, the device may include a vibrating object, a vibration generating device at the vibrating object, and a connecting member between the vibrating object and the vibration generating device. The vibration generating device may include one or more vibration devices, which may include a first vibration portion comprising a first material and a second vibration portion disposed adjacent to the first vibration portion, the second vibration portion comprising a second material.

[0192] According to some embodiments of this disclosure, the vibrating object may be a display panel including pixels configured to display an image, the display panel may include a first rear region and a second rear region, and the vibration generating device may include a first vibration generating device disposed in the first rear region and a second vibration generating device disposed in the second rear region.

[0193] According to some embodiments of this disclosure, the device may also include a plate between the display panel and the vibration generating device.

[0194] According to some embodiments of this disclosure, the vibrating object may include one or more of the following: a display panel including pixels configured to display images, a screen panel on which images are to be 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, wood, plastic, glass, metal, cloth, fiber, paper, rubber, leather, carbon, and mirrors.

[0195] It will be apparent to those skilled in the art that various modifications and variations can be made to the vibration device and devices including the present disclosure without departing from the technical concept or scope of the present disclosure. Therefore, the present disclosure is intended to cover modifications and variations of the disclosure that fall within the scope of the appended claims and their equivalents.

Claims

1. A vibration device, comprising: Includes the first vibrating part of the first material; as well as A second vibration portion is positioned adjacent to the first vibration portion, the second vibration portion comprising a second material. The first vibrating part has a higher mechanical quality factor than the second vibrating part, and the second vibrating part has a higher piezoelectric constant than the first vibrating part.

2. The vibration device according to claim 1, wherein, The first vibrating part and the second vibrating part are arranged horizontally alternately.

3. The vibration device according to claim 2, wherein, The first vibrating part shares an angle with another first vibrating part adjacent to the first vibrating part in the diagonal direction of the plane, and / or the second vibrating part shares an angle with another second vibrating part adjacent to the second vibrating part in the diagonal direction of the plane.

4. The vibration device according to claim 1, further comprising: Including another first vibration portion of the first material, The first vibrating part is configured to be adjacent to the rear surface of the vibrating member. The second vibrating part is disposed on the rear surface of the first vibrating part, and Another first vibration part is disposed on the rear surface of the second vibration part.

5. The vibration device according to claim 1, wherein, The first vibration component is expressed as Equation 1, and the second vibration component is expressed as Equation 2: [Formula 1] [Equation 2] 。 6. The vibration device according to claim 1, further comprising: The first electrode portion, and Second electrode section, Each of the first vibration portion and the second vibration portion is disposed between the first electrode portion and the second electrode portion.

7. The vibration device according to claim 6, wherein, The mechanical quality factor of the vibration equipment is greater than 500.

8. The vibration device according to claim 6, wherein, The electromechanical coupling coefficient of the vibration device is greater than 0.

59.

9. The vibration device according to claim 6, wherein, The piezoelectric constant of the vibrating device is greater than 450.

10. A vibration device, comprising: The vibration part includes the first vibration part and the second vibration part; A first electrode portion disposed on the first surface of the vibrating portion; as well as The second electrode portion is disposed on the second surface opposite to the first surface of the vibrating portion. Wherein, the first vibrating part includes a first material, the second vibrating part includes a second material, and the second vibrating part is arranged adjacent to the first vibrating part. The first vibrating part has a higher mechanical quality factor than the second vibrating part, and the second vibrating part has a higher piezoelectric constant than the first vibrating part.

11. The vibration device according to claim 10, wherein, The first vibrating part and the second vibrating part are arranged horizontally alternately.

12. The vibration device according to claim 10, wherein, The vibrating part further includes: another first vibrating part comprising the first material. The first vibrating part is configured to be adjacent to the rear surface of the vibrating member. The second vibrating part is disposed on the rear surface of the first vibrating part, and Another first vibration part is disposed on the rear surface of the second vibration part.

13. The vibration device according to claim 10, further comprising: A first cover member disposed on the first surface of the vibrating part and a second cover member disposed on the second surface of the vibrating part; as well as A first adhesive layer disposed on the first surface of the vibrating portion and a second adhesive layer disposed on the second surface of the vibrating portion. Each of the first adhesive layer and the second adhesive layer is disposed between the first cover member and the second cover member, and the combination of the first adhesive layer and the second adhesive layer surrounds the vibrating portion, the first electrode portion and the second electrode portion.

14. A device comprising a vibrating object, comprising: Vibration generating device at the vibrating object; as well as The connecting member between the vibrating object and the vibration generating device The vibration generating device includes one or more vibration devices according to any one of claims 1 to 13.

15. The device according to claim 14, wherein: The vibrating object is a display panel comprising pixels configured to display images. The display panel includes a first rear area and a second rear area, and The vibration generating device includes: A first vibration generating device disposed in the first rear region; and A second vibration generating device is disposed in the second rear region.

16. The device according to claim 14, further comprising: The plate between the vibrating object and the vibration generating device.

17. The device according to claim 14, wherein, The vibrating object includes one or more of the following: a display panel comprising pixels configured to display images, a screen panel onto which images are to be projected from a display device, a lighting panel, a sign panel, interior materials of a vehicle, glass windows of a vehicle, exterior materials of a vehicle, ceiling materials of a building, interior materials of a building, glass windows of a building, interior materials of an aircraft, glass windows of an aircraft, wood, plastic, glass, metal, cloth, fiber, paper, rubber, leather, carbon, and mirrors.

Images