Apparatus and mehtod of manufacturing the same

Abstract

An apparatus according to an embodiment of the present specification includes a display panel that displays an image and includes a pad portion, a vibration device disposed on the rear surface of the display panel and vibrating the display panel, and a vibration signal line portion between the pad portion and the vibration device.

Description

Technology Field

[0001] This specification relates to an apparatus and a method for manufacturing the same. Background Technology

[0002] A display device displays images on a display panel and includes a separate speaker or audio device to provide sound. When a speaker is placed on the display device, the space occupied by the speaker causes problems that restrict the design and spatial layout of the display device.

[0003] Speakers applied to display devices can be actuators, for example, containing magnets and coils. However, applying actuators to display devices has the disadvantage of being thick. Consequently, piezoelectric elements capable of achieving a thin profile are attracting attention.

[0004] Piezoelectric elements have brittle characteristics, which cause them to break easily due to external impact, resulting in low reliability of sound reproduction. Additionally, when speakers such as piezoelectric elements are applied to flexible display devices, there is a problem of breakage occurring due to their brittle characteristics. The problem to be solved

[0005] Accordingly, the inventors of this specification recognized the aforementioned problems and conducted various experiments to implement a vibration device capable of improving sound quality and sound pressure characteristics. Through these experiments, they invented a device comprising a new vibration device capable of improving sound quality and sound pressure characteristics.

[0006] The problem to be solved according to the embodiments of the present specification is to provide a device capable of generating vibration or sound by vibrating a vibrating object and improving sound pressure characteristics.

[0007] The problems to be solved according to the embodiments of this specification are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0008] An apparatus according to an embodiment of the present specification includes a display panel that displays an image and includes a pad portion, a vibration device disposed on the rear surface of the display panel and vibrating the display panel, and a vibration signal line portion between the pad portion and the vibration device.

[0009] The device according to the embodiment of the present specification includes a vibrating object comprising a pad portion, a vibrating device disposed on the vibrating object, and a vibration signal line portion connected to the pad portion and applying a signal to the vibrating device.

[0010] A method for manufacturing a device according to an embodiment of the present specification includes the steps of: placing a vibration device on the rear surface of a display panel including a pad portion; forming a vibration signal line portion connecting the pad portion and the vibration device on the rear surface of the display panel; and connecting a driving circuit portion to the pad portion.

[0011] Specific details of other embodiments are included in the detailed description and drawings. Effects of the invention

[0012] The device according to the embodiment of the present specification can generate sound such that the direction of sound propagation of the device is toward the front of the display panel or the object to be vibrated by configuring a vibration device that vibrates a display panel or an object to be vibrated.

[0013] The device according to the embodiment of the present specification can simplify the wiring structure for supplying a signal to a vibration device by configuring a vibration signal line portion connected to a pad portion.

[0014] The effects of this specification are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below.

[0015] Since the content of the invention described above regarding the problem to be solved, the means for solving the problem, and the effect does not specify the essential features of the claim, the scope of the claim is not limited by the matters described in the content of the invention. Brief explanation of the drawing

[0016] FIG. 1 is a drawing showing an apparatus according to an embodiment of the present specification. Figure 2 is a cross-sectional view of line I-I' shown in Figure 1. Figure 3 is another cross-sectional view of line I-I' shown in Figure 1. FIG. 4 is a drawing showing a vibration device according to an embodiment of the present specification. Figure 5 is a cross-sectional view of line II-II' shown in Figure 4. FIGS. 6a to 6f are drawings showing a vibration module according to an embodiment of the present specification. FIG. 7 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 8 is a drawing showing an apparatus according to another embodiment of the present specification. Figure 9 is another cross-sectional view of line II-II' shown in Figure 4. Figure 10 is a drawing showing the vibrating part illustrated in Figure 8. FIG. 11 is a drawing showing an apparatus according to another embodiment of the present specification. Figure 12 is a cross-sectional view of line III-III' shown in Figure 11. FIG. 13 is another cross-sectional view of line III-III' shown in FIG. 11. FIG. 14 is another cross-sectional view of line III-III' shown in FIG. 11. FIG. 15 is another cross-sectional view of line III-III' shown in FIG. 11. FIG. 16 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 17 is a drawing showing an apparatus according to another embodiment of the present specification. FIGS. 18a and FIGS. 18b are drawings illustrating an apparatus according to another embodiment of the present specification. FIG. 19 is a drawing showing an apparatus according to another embodiment of the present specification. Figure 20 is a drawing illustrating 'A' shown in Figure 19. FIG. 21 is a cross-sectional view of line IV-IV' shown in FIG. 20. FIG. 22 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 23 is a cross-sectional view of the line V-V' shown in FIG. 22. FIG. 24 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 25 is a cross-sectional view of line VI - VI' shown in FIG. 24. FIGS. 26a to 26e are drawings illustrating a manufacturing method according to an embodiment of the present specification. Specific details for implementing the invention

[0017] The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below but may be implemented in various different forms; these embodiments are provided merely to ensure that the disclosure of this specification is complete and to fully inform those skilled in the art of the scope of the invention, and this specification is defined only by the scope of the claims.

[0018] Shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of this specification are exemplary and are not limited to the depicted items. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise.

[0019] In interpreting the components, even if there is no separate explicit description of the error range, it is interpreted as including the error range.

[0020] In the case of a description of a positional relationship, for example, when the positional relationship between two parts is described using terms such as "on," "on the upper," "on the lower," or "next to," for example, unless "immediately" or "directly" is used, one or more other parts may be located between the two parts.

[0021] In the case of an explanation of temporal relationships, when temporal sequence is explained using "after," "following," "next," "before," etc., cases that are not continuous may be included unless "immediately" or "directly" is used.

[0022] Although terms such as "first," "second," etc. are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of this specification.

[0023] In describing the components of this specification, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended only to distinguish the components from other components, and the nature, order, sequence, or number of the components are not limited by the terms. Where it is stated that a component is "connected," "coupled," or "joined" to another component, it should be understood that the component may be directly connected or joined to the other component, but that other components may be "interposed" between each component that may be indirectly connected or joined unless specifically stated otherwise.

[0024] "At least one" should be understood to include all combinations of one or more associated components. For example, the meaning of "at least one of the first, second, and third components" may be said to include not only the first, second, or third components, but also all combinations of two or more of the first, second, and third components.

[0025] In this specification, the term "device" may include display devices such as a Liquid Crystal Module (LCM) or an Organic Light-Emitting Display Module (OLED Module), which include a display panel and a driving unit for driving the display panel. Additionally, it may include set electronic apparatus or set devices such as a laptop computer, television, computer monitor, automotive apparatus or other forms of vehicle that are complete products or final products including an LCM, OLED module, etc., and set electronic apparatus or set device or set apparatus such as a mobile electronic apparatus such as a smartphone or electronic pad.

[0026] Accordingly, the device in this specification may include the display device itself, such as an LCM or an OLED module, and even a set device that is an application product or a device for end consumers, including an LCM or an OLED module.

[0027] In addition, in some embodiments, an LCM or OLED module composed of a display panel and a driving unit, etc., may be referred to as a "display device," and an electronic device as a finished product including the LCM or OLED module may be distinguished and referred to as a "set device." For example, the display device may include a liquid crystal (LCD) or organic light-emitting diode (OLED) display panel and a source PCB, which is a control unit for driving the display panel. The set device may further include a set PCB, which is a set control unit electrically connected to the source PCB to drive the entire set device.

[0028] The display panel used in the embodiments of this specification may be any type of display panel, such as a liquid crystal display panel, an organic light-emitting diode (OLED) display panel, and an electroluminescent display panel, but the embodiments are not limited thereto. For example, the display panel may be a display panel capable of generating sound by being vibrated by a vibration device according to the embodiments of this specification. The display panel applied to the display device according to the embodiments of this specification is not limited to the shape or size of the display panel.

[0029] For example, if the display panel is a liquid crystal display panel, it may include a plurality of gate lines and data lines, and pixels formed in the intersection area of ​​the gate lines and data lines. Additionally, it may be configured to include an array substrate comprising thin-film transistors which are switching elements for controlling light transmittance at each pixel, an upper substrate having a color filter and / or a black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate.

[0030] In the case where the display panel is an organic light-emitting diode (OLED) display panel, it may include a plurality of gate lines and data lines, and pixels formed in the intersection regions of the gate lines and data lines. Furthermore, it may be configured to include an array substrate comprising thin-film transistors, which are devices for selectively applying voltage to each pixel, an organic light-emitting diode (OLED) layer on the array substrate, and an encapsulation substrate or encapsulation substrate disposed on the array substrate to cover the organic light-emitting diode layer. The encapsulation substrate can protect the thin-film transistors and the organic light-emitting diode layer from external shocks and prevent moisture or oxygen from penetrating into the organic light-emitting diode layer. Additionally, the layer formed on the array substrate may include an inorganic light-emitting layer, for example, a nano-sized material layer and a quantum dot light-emitting layer. Another example may include a micro light-emitting diode.

[0031] The display panel may further include a backing, such as a metal plate attached to the display panel. Other structures, for example, other structures made of other materials, may also be included.

[0032] The features of each of the various embodiments of this specification may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an associated relationship.

[0033] The embodiments of this specification are described below through the attached drawings and examples. For the convenience of explanation, the scale of the components shown in the drawings may differ from the actual scale and is therefore not limited to the scale shown in the drawings.

[0034] To provide sound to a display device, a speaker can be implemented in a film form to enable a thinner display. Since film-type vibrators can be manufactured over a large area, they can be applied to large-area displays; however, there is a problem in that their low piezoelectric properties result in low vibration, making it difficult to apply them to large-area displays. If ceramics are applied to improve piezoelectric properties, there are issues with poor durability and limitations on the size of the ceramic. When a vibrator composed of a piezoelectric composite containing piezoelectric ceramics is applied to a display device, the composite vibrates primarily in the left-right direction relative to the horizontal direction—for example, relative to the width of the display. Consequently, it cannot sufficiently vibrate the display in the up-down (or front-back) direction, making it difficult to apply to the display and preventing the output of desired sound toward the front of the display. When applying a film-type piezoelectric element to a device, there is a problem in that the sound pressure characteristics are low compared to speakers such as actuators. When applying a stacked piezoelectric element to a device, which consists of multiple layers of film-type piezoelectric elements, to improve sound pressure, there are problems such as increased power consumption and increased thickness of the device. Additionally, it has been recognized that when a single vibration device is placed on the back of a display panel, for example, a mobile device, mono sound can be output, but it is difficult to output sound including stereo sound. Therefore, to implement sound including stereo sound, additional vibration devices can be placed at the edges of the display panel, but it is difficult to place exciters on flexible devices with curved surfaces, and when placing a piezoelectric element, for example, a speaker made of piezoelectric ceramic, there is a problem that the piezoelectric ceramic is prone to breakage.

[0035] Accordingly, the inventors of this specification conducted various experiments to implement a vibration device capable of realizing acoustic characteristics including stereo sound, being applicable to flexible devices, and vibrating in the vertical direction relative to the horizontal direction of a display panel. Through these experiments, they invented a device comprising a vibration device of a novel structure capable of realizing acoustic characteristics including stereo sound and being applicable to devices including flexible devices. This is described below.

[0036] FIG. 1 is a drawing showing an apparatus according to an embodiment of the present specification. FIG. 2 is a cross-sectional view along line I-I' shown in FIG. 1.

[0037] Referring to FIGS. 1 and 2, the device according to an embodiment of the present specification may include a display panel (100) for displaying an image and a vibration device (200) disposed on the back (or rear) of the display panel (100).

[0038] The display panel (100) can display an image, for example, an electronic image or a digital image. For example, the display panel (100) can display an image by outputting light. The display panel (100) may be any type of display panel or a curved 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. The display panel (100) may be a flexible display panel. For example, the display panel (100) may be a flexible light-emitting display panel, a flexible electrophoretic display panel, a flexible electronic wet display panel, a flexible micro light-emitting diode display panel, or a flexible quantum dot light-emitting display panel, but is not limited thereto.

[0039] A display panel (100) according to an embodiment of the present specification may include a display area (AA) that displays an image according to the driving of a plurality of pixels. Additionally, the display panel (100) may include a non-display area (IA) surrounding the display area (AA), but is not limited thereto.

[0040] A display panel (100) according to an embodiment of the present specification can display an image in the form of a top emission method, a bottom emission method, or a dual emission method, depending on the structure of a pixel array layer including an anode electrode, a cathode electrode, and a light-emitting element. The top emission method can display an image by emitting visible light generated from the pixel array layer toward the front of the base substrate, and the bottom emission method can display an image by emitting visible light generated from the pixel array layer toward the rear of the base substrate.

[0041] A display panel (100) according to an embodiment of the present specification may include a pixel array portion disposed in a pixel area formed by a plurality of gate lines and / or a plurality of data lines. The pixel array portion may include a plurality of pixels that display an image according to a signal supplied to the signal lines. The signal lines may include gate lines, data lines, pixel driving power lines, etc., but are not limited thereto.

[0042] Each of the plurality of pixels may include a pixel circuit layer including a driving thin-film transistor provided in a pixel area, an anode electrode electrically connected to the driving thin-film transistor, a light-emitting element formed on the anode electrode, and a cathode electrode electrically connected to the light-emitting element.

[0043] The driving thin-film transistor may be configured in the transistor region of each pixel region disposed on the substrate. The driving thin-film transistor may include a gate electrode, a gate insulating film, a semiconductor layer, a source electrode, and a drain electrode. The semiconductor layer of the thin-film transistor may include silicon such as a-Si, poly-Si, or low-temperature poly-Si, or an oxide such as IGZO (Indium-Gallium-Zinc-Oxide), but is not limited thereto.

[0044] The anode electrode is provided in the aperture area placed in each pixel area and can be electrically connected to the driving thin-film transistor.

[0045] A light-emitting element according to an embodiment of the present specification may include a light-emitting element layer formed on an anode electrode. The light-emitting element layer may be implemented to emit light of the same color, e.g., white, for each pixel, or may be implemented to emit light of a different color, e.g., red, green, or blue, for each pixel. A cathode electrode (or common electrode) may be commonly connected to the light-emitting element layer provided in each pixel area. For example, the light-emitting element layer may be a single structure containing the same color for each pixel or a stacked structure containing two or more structures. As another example, the light-emitting element layer may be a stacked structure containing two or more structures containing one or more different colors for each pixel. The two or more structures containing one or more different colors may be composed of one or more of blue, red, yellow-green, and green, or a combination thereof, but are not limited thereto. Examples of combinations may include blue and red, red and yellow-green, red and green, and red / yellow-green / green, but are not limited thereto. And, they can be applied regardless of the stacking order. A stack 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 be a pn junction structure and may include an N-type charge generation layer and a P-type charge generation layer.

[0046] A light-emitting element according to another example may include a micro light-emitting diode element electrically connected to an anode electrode and a cathode electrode, respectively. The micro light-emitting diode element may be a light-emitting diode implemented in the form of an integrated circuit (IC) or a chip. The micro light-emitting diode element 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 light-emitting diode element provided in each pixel area.

[0047] The encapsulation portion is formed on a substrate to surround the pixel array portion and can prevent oxygen or moisture from penetrating into the light-emitting elements of the pixel array portion. The encapsulation portion according to the embodiments of this specification may be formed as a multilayer structure in which an organic material layer and an inorganic material layer are alternately stacked, but is not limited thereto. The inorganic material layer can block oxygen or moisture from penetrating into the light-emitting elements of the pixel array portion. The organic material layer may be formed with a thickness relatively thicker than the inorganic material layer to cover foreign substances (particles) that may occur during the manufacturing process, but is not limited thereto. For example, the encapsulation portion may include a first inorganic film, an organic film on the first inorganic film, and a second inorganic film on the organic film. The organic film may be a foreign substance cover layer, but is not limited to this term. A touch panel may be disposed on the encapsulation portion or on the rear surface of the pixel array portion.

[0048] A display panel (100) according to an embodiment of the present specification 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 array substrate. For example, the first substrate may include a pixel array (or a display portion or a display area) having a plurality of pixels formed in a pixel area intersected by a plurality of gate lines and / or a plurality of data lines. Each of the plurality of pixels may include a thin-film transistor connected to the gate line and / or data line, a pixel electrode connected to the thin-film transistor, and a common electrode formed adjacent to the pixel electrode and supplied with a common voltage.

[0049] The first substrate may further include a pad portion provided at the first edge (or non-display portion) and a gate driving circuit provided at the second edge (or second non-display portion).

[0050] The pad portion can supply a signal supplied from the outside to a pixel array and / or a gate driving circuit. For example, the pad portion may include a plurality of data pads connected to a plurality of data lines through a plurality of data link lines and / or a plurality of gate input pads connected to a gate driving circuit through a gate control signal line. For example, the size of the first substrate may be larger than that of the second substrate, but is not limited thereto.

[0051] The gate driving circuit may be embedded (or integrated) at the second edge of the first substrate to be connected to a plurality of gate lines. For example, the gate driving circuit may be implemented as a shift register comprising a transistor formed by the same process as the thin-film transistor provided in the pixel area. According to another example, the gate driving circuit may not be embedded in the upper substrate but may be included in the panel driving circuit in the form of an integrated circuit.

[0052] The second substrate may be a lower substrate or a color filter array substrate. For example, the second substrate may include a pixel having an aperture region that overlaps with a pixel region formed on the first substrate, and a color filter layer formed in the aperture region. The second substrate may have a smaller size than the first substrate, but is not limited thereto. For example, the second substrate may overlap with the remaining portion of the first substrate excluding the first edge. The second substrate may be bonded to the remaining portion of the first substrate excluding the first edge by means of a sealant with a liquid crystal layer in between.

[0053] The liquid crystal layer may be disposed between the first substrate and the second substrate. The liquid crystal layer may be composed of a liquid crystal in which the arrangement direction of liquid crystal molecules changes according to the electric field formed by the data voltage applied to the pixel electrode for each pixel and the common voltage.

[0054] The second polarizing member is attached to the lower surface of the second substrate and can polarize light incident from the backlight and proceeding to the liquid crystal layer. The first polarizing member is attached to the upper surface of the first substrate and can polarize light transmitted through the first substrate and emitted to the outside.

[0055] A display panel (100) according to an embodiment of the present specification can display an image according to light transmitted through a liquid crystal layer by driving a liquid crystal layer according to an electric field formed at each pixel by a data voltage applied to each pixel and a common voltage.

[0056] In another embodiment of the present specification, the display panel (100) may have a first substrate formed of a color filter array substrate and a second substrate formed of a thin film transistor array substrate. For example, the display panel (100) according to another embodiment of the present specification may have a vertically inverted form of the display panel (100) according to the embodiment of the present specification. In this case, the pad portion of the display panel (100) according to another embodiment of the present specification may be covered by a separate mechanism.

[0057] A display panel (100) according to another embodiment of the present specification may include a bending portion that is bent or curved to have a curved shape or a constant radius of curvature.

[0058] The bending portion of the display panel (100) may be implemented on at least one of the one-sided edge portion and the other-sided edge that are parallel to each other in the display panel (100). The one-sided edge and / or the other-sided edge of the display panel (100) implementing the bending 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). The display panel (100) including the bending portion implemented by the bending of the non-display area (IA) may have a one-sided bezel bending structure or a two-sided bezel bending structure. Furthermore, the display panel (100) including the bending portion implemented by the bending of the edge of the display area (AA) and the non-display area (IA) may have a one-sided active bending structure or a two-sided active bending structure.

[0059] The vibration device (200) can vibrate the display panel (100). For example, the vibration device (200) can be implemented on the back of the display panel (100) so as to vibrate the display panel (100) directly. For example, the vibration device (200) can provide acoustic and / or haptic feedback to the user based on the vibration of the display panel (100) by vibrating the display panel (100) from the back of the display panel (100).

[0060] According to an embodiment of the present specification, the vibration device (200) can vibrate the display panel (100) by vibrating according to a vibration driving signal synchronized with an image displayed on the display panel (100). As another example, the vibration device (200) can vibrate the display panel (100) by vibrating according to a haptic feedback signal (or tactile feedback signal) synchronized with a user touch on a touch panel (or touch sensor layer) placed on or embedded in the display panel (100). Accordingly, the display panel (100) can vibrate according to the vibration of the vibration device (200) to provide at least one of acoustic and haptic feedback to the user (or viewer).

[0061] The vibration device (200) according to the embodiment of the present specification may be implemented with a size corresponding to the display area (AA) of the display panel (100). The size of the vibration device (200) may be 0.9 to 1.1 times the size of the display area (AA), but is not limited thereto. For example, the size of the vibration device (200) may be the same as or smaller than the size of the display area (AA). For example, the size of the vibration device (200) may be the same as or nearly the same as the size of the display area (AA) of the display panel (100), so that most of the area of ​​the display panel (100) can be covered, and since the vibration generated by the vibration device (200) can vibrate the entire area of ​​the display panel (100), the sense of sound localization is high and user satisfaction can be improved. In addition, the contact area (or panel coverage) between the display panel (100) and the vibration device (200) can be increased, thereby increasing the vibration area of ​​the display panel (100), so that the mid-low frequency sound generated by the vibration of the display panel (100) can be improved. Furthermore, since the vibration device (200) applied to a large device can vibrate the entire large (or large-area) display panel (100), the sense of sound localization due to the vibration of the display panel (100) is further improved, thereby enabling the realization of an enhanced sound effect. Accordingly, the vibration device (200) according to the present specification is positioned on the rear of the display panel (100) and can sufficiently vibrate the display panel (100) in the up-down (or front-back) direction, so that the desired sound can be output to the front of the device.

[0062] The vibration device (200) may include a vibration generator (210) that is placed on or connected to the rear (or back) surface of the display panel (100). The vibration device (200) according to the embodiment of the present specification may be implemented in the form of a film. Since the vibration device (200) is implemented in the form of a film, it may have a thinner thickness than the display panel (100), so the increase in the thickness of the device due to the placement of the vibration device (200) can be minimized. For example, the vibration device (200) may be expressed as an acoustic generating module, an acoustic generating device, a film actuator, a film-type piezoelectric composite actuator, a film speaker, a film-type piezoelectric speaker, or a film-type piezoelectric composite speaker, but is not limited to such terms. As another example, the vibration device (200) may not be placed on the rear surface of the display panel (100) and may be applied to a non-display panel rather than a display panel. For example, it can be applied to wood, plastic, glass, fabric, automotive interior materials, ceilings, aircraft, etc., but is not limited thereto. In this case, a non-display panel can be applied as a diaphragm, and sound can be output by vibrating the non-display panel.

[0063] For example, the device according to the present specification may include a vibrating object and a vibrating device (200) disposed on the vibrating object. For example, the vibrating object may include a display panel having a plurality of pixels for displaying an image or a non-display panel. For example, the vibrating object may include a display panel having a plurality of pixels for displaying an image, or may be one or more of wood, plastic, glass, fabric, interior materials of a car, windows of a car, interior ceilings of buildings, windows of buildings, interior materials of buildings, interior materials of aircraft, and windows of aircraft, but is not limited thereto. For example, the non-display panel may be a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), or an inorganic light-emitting lighting panel (or device), but is not limited thereto. For example, the vibrating object may include a display panel having a plurality of pixels for displaying an image, or may be one or more of a light-emitting diode lighting panel (or device), an organic light-emitting lighting panel (or device), or an inorganic light-emitting lighting panel (or device), but is not limited thereto.

[0064] According to another example, the object of vibration may include a plate, and the plate may include a metal material or one or more single non-metallic or composite non-metallic materials selected from wood, plastic, glass, cloth, and leather, but is not limited thereto.

[0065] The vibration device (200) may be positioned on the rear of the display panel (100) so as to overlap with the display area of ​​the display panel (100). For example, the vibration device (200) may overlap with more than half of the display area of ​​the display panel (100). As another example, the vibration device (200) may overlap with the entire display area of ​​the display panel (100).

[0066] A vibration device (200) according to an embodiment of the present specification can vibrate by alternately repeating contraction and expansion by the inverse piezoelectric effect when an alternating voltage is applied, and can vibrate a display panel (100) through vibration. For example, the vibration device (200) can vibrate the display panel (100) by vibrating according to a voice signal synchronized with an image displayed on the display panel (100). As another example, the vibration device (200) can vibrate the display panel (100) by vibrating according to a haptic feedback signal (or tactile feedback signal) synchronized with a user touch on a touch panel (or touch sensor layer) placed on or embedded in the display panel (100). Accordingly, the display panel (100) can vibrate according to the vibration of the vibration device (200) to provide at least one of acoustic and haptic feedback to a user (or viewer).

[0067] Accordingly, the device according to the embodiment of the present specification can output sound generated by the vibration of the display panel (100) due to the vibration of the vibration device (200) to the front of the display panel (100). Furthermore, since most of the area of ​​the display panel (100) can vibrate by the film-type vibration device (200) according to the embodiment of the present specification, the sound pressure characteristics and sound localization sense of the sound due to the vibration of the display panel (100) can be further improved.

[0068] The device according to the embodiment of the present specification may further include a connecting member (150) (or a first connecting member) between the display panel (100) and the vibration device (200).

[0069] For example, the connecting member (150) may be positioned between the back surface of the display panel (100) and the vibration device (200) to connect or combine the vibration device (200) to the back surface of the display panel (100). For example, the vibration device (200) may be supported or positioned on the back surface of the display panel (100) by being connected or combined to the back surface of the display panel (100) via the connecting member (150). For example, the vibration generator (210) may be positioned on the back surface of the display panel (100) via the connecting member (150).

[0070] The connecting member (150) according to the embodiment of the present specification may be composed of a material having an adhesive layer with excellent adhesion or bonding strength to the back surface of the display panel (100) and the vibration device (200), respectively. For example, the connecting member (150) may include a foam pad, double-sided tape, or adhesive, but is not limited thereto. For example, the adhesive layer of the connecting member (150) may include epoxy, acrylic, silicone, or urethane, but is not limited thereto. For example, the adhesive layer of the connecting member (150) may include an acrylic-based material (or material) having characteristics of having relatively excellent adhesion strength and high hardness among acrylic and urethane. By doing so, the vibration of the vibration device (200) can be well transmitted to the display panel (100).

[0071] The adhesive layer of the connecting member (150) may further include additives such as an adhesive promoter, a wax component, or an antioxidant, but is not limited thereto. The additives can prevent the connecting member (150) from detaching (or peeling) from the display panel (100) due to vibration of the vibration device (200). For example, the adhesive promoter may be a rosin derivative, the wax component may be paraffin wax, and the antioxidant may be a phenolic antioxidant such as a thioester, but is not limited thereto.

[0072] According to another example, the connecting member (150) may further include a hollow portion provided between the display panel (100) and the vibration device (200). The hollow portion of the connecting member (150) may provide an air gap between the display panel (100) and the vibration device (200). The air gap allows sound waves (or sound pressure) resulting from the vibration of the vibration device (200) to be concentrated on the display panel (100) rather than dispersed by the connecting member (150), thereby minimizing the loss of vibration caused by the connecting member (150) and increasing the sound pressure characteristics of the sound generated by the vibration of the display panel (100).

[0073] The device according to the embodiment of the present specification may further include a support member (300) disposed on the rear surface of the display panel (100).

[0074] The support member (300) can cover the rear surface of the display panel (100). For example, the support member (300) can cover the entire rear surface of the display panel (100) with a gap space (GS) in between. For example, the support member (300) may include at least one material among glass material, metal material, and plastic material. For example, the support member (300) may be a rear structure or a set structure. The support member (300) may be expressed by other terms such as Cover Bottom, Plate Bottom, Back Cover, Base Frame, Metal Frame, Metal Chassis, Chassis Base, or m-Chassis. For example, the support member (300) may be implemented as any form of frame or plate-like structure placed on the rear surface of the display panel (100).

[0075] The edge or sharp corner portion of the support member (300) may have a beveled or curved shape by a chamfering process or a corner rounding process. For example, the glass material support member (300) may be sapphire glass. As another example, the metal material support member (300) may be made of one or more materials selected from aluminum, aluminum alloy, magnesium alloy, and an alloy of iron and nickel.

[0076] A support member (300) according to an embodiment of the present specification may include a first support member (310) and a second support member (330).

[0077] The first support member (310) may be positioned between the rear surface of the display panel (100) and the second support member (330). For example, the first support member (310) may be positioned between the rear edge of the display panel (100) and the front edge portion of the second support member (330). The first support member (310) may support one or more of the edge portions of the display panel (100) and the edge portions of the second support member (330). As another example, the first support member (310) may cover the rear surface of the display panel (100). For example, the first support member (310) may cover the entire rear surface of the display panel (100). For example, the first support member (310) may be a member that covers the entire rear surface of the display panel (100). For example, the first support member (310) may include at least one material among glass, metal, and plastic. For example, the first support member (310) may be an inner plate, but is not limited to the term. For example, the first support member (310) may be omitted.

[0078] The first support member (310) may be spaced apart from the rearmost surface of the display panel (100) or from the vibration device (200) with a gap space (GS) in between. For example, the gap space (GS) may be expressed as an air gap, a vibration space, or an acoustic resonating chamber, but is not limited to such terms.

[0079] The second support member (330) may be disposed on the rear surface of the first support member (310). The second support member (330) may be a member that covers the entire rear surface of the display panel (100). For example, the second support member (330) may include at least one material among glass material, metal material, and plastic material. For example, the second support member (330) may be an outer plate, a rear plate, a back plate, a back cover, or a rear cover, but is not limited to these terms. For example, a plurality of holes (301) may be disposed in the second support member (330).

[0080] The support member (300) according to the embodiment of the present specification may further include a connecting member (350) (or a second connecting member).

[0081] A connecting member (350) may be disposed between the first supporting member (310) and the second supporting member (330). For example, the first supporting member (310) and the second supporting member (330) may be joined or connected to each other via the connecting member (350). For example, the connecting member (350) may be an adhesive resin, double-sided tape, or a double-sided adhesive foam pad, but is not limited thereto. For example, the connecting member (350) may have elasticity for shock absorption, but is not limited thereto. For example, the connecting member (350) may be disposed in the entire area between the first supporting member (310) and the second supporting member (330). As another example, the connecting member (350) may be formed as a mesh structure having an air gap between the first supporting member (310) and the second supporting member (330).

[0082] The device according to the embodiment of the present specification may further include a middle frame (400). The middle frame (400) may be positioned between the rear edge of the display panel (100) and the front edge portion of the support member (300). The middle frame (400) may support one or more of the edge portions of the display panel (100) and the support member (300). The middle frame (400) may surround one or more of the sides of the display panel (100) and the support member (300). The middle frame (400) may provide a gap space (GS) between the display panel (100) and the support member (300). The middle frame (400) may be expressed as a middle cabinet, a middle cover, or a middle chassis, but is not limited to these terms.

[0083] A middle frame (400) according to an embodiment of the present specification may include a first support portion (410) and a second support portion (430). For example, the first support portion (410) may be a support member, but is not limited to the term. For example, the second support portion (430) may be a side wall member, but is not limited to the term.

[0084] The first support portion (410) is positioned between the rear edge of the display panel (100) and the front edge of the support member (300) to provide a gap space (GS) between the display panel (100) and the support member (300). The front of the first support portion (410) may be combined or connected to the rear edge portion of the display panel (100) via the first connecting member (401). The rear of the first support portion (410) may be combined or connected to the front edge portion of the support member (300) via the second connecting member (403). For example, the first support portion (410) may include a single square frame structure or a frame structure having multiple divided bars, but is not limited thereto.

[0085] The second support portion (430) may be positioned parallel to the thickness direction (Z) of the device. For example, the second support portion (430) may be coupled perpendicularly to the outer surface of the first support portion (410) parallel to the thickness direction (Z) of the device. The second support portion (430) may protect the outer surfaces of the display panel (100) and the support member (300) by surrounding one or more of the outer surfaces of the display panel (100) and the support member (300). The first support portion (410) may 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).

[0086] The device according to the embodiment of the present specification may include a panel connecting member instead of a middle frame (400).

[0087] A panel connecting member can be positioned between the rear edge portion of the display panel (100) and the front edge portion of the support member (300) to provide a gap space (GS) between the display panel (100) and the support member (300). The panel connecting member can be positioned between the rear edge portion of the display panel (100) and the edge portion of the support member (300) to bond the display panel (100) and the support member (300). For example, the panel connecting member can be implemented as double-sided tape, single-sided tape, or double-sided adhesive foam pad, but is not limited thereto. For example, the adhesive layer of the panel connecting member may include epoxy, acrylic, silicone, or urethane, but is not limited thereto. For example, the adhesive layer of the panel connecting member may include a urethane-based material (or material) having relatively softer properties than acrylic among acrylic and urethane in order to minimize the transmission of vibrations of the display panel (100) to the support member (300). By doing so, the vibrations of the display panel (100) transmitted to the support member (300) can be minimized.

[0088] In the device according to the embodiment of the present specification, when a panel connecting member is included instead of a middle frame (400), the support member (300) may include a bending side wall that is bent from one side (or end) of the second support member (330) and surrounds one or more of the outer surfaces (or outer walls) of the first support member (310), the panel connecting member, and the display panel (100). The bending side wall according to the embodiment of the present specification may have a single side wall structure or a hemming structure. The hemming structure may be a structure in which the ends of any member are bent into a curved shape so as to overlap each other or be spaced apart from each other parallel to each other. For example, to enhance the aesthetic appeal of the design, the bending sidewall may include a first bending sidewall bent from one side (or end) of the second support member (330), and a second bending sidewall bent from the first bending sidewall to the outer surface of the display panel (100). The second bending sidewall may be spaced apart from the inner surface of the first bending sidewall to mitigate contact with the inner surface of the first bending sidewall or the transmission of external impact in the lateral direction to the outer surface of the display panel (100). By doing so, the second bending sidewall may mitigate contact between the outer surface of the display panel (100) and the inner surface of the first bending sidewall or the transmission of external impact in the lateral direction to the outer surface of the display panel (100).

[0089] As another example, in the device according to the embodiment of the present specification, the middle frame (400) may be omitted. Instead of the middle frame (400), it may be composed of a panel connecting member or an adhesive. As another example, instead of the middle frame (400), it may be composed of a partition.

[0090] The inventors of this specification conducted various experiments to improve the acoustic characteristics in the low frequency range, as the acoustic characteristics in the low frequency range deteriorate when the vibration device (200) is configured as a film-type vibration device. Through these experiments, they invented a device with a new structure that can improve the acoustic characteristics in the low frequency range. This is described below.

[0091] Figure 3 is another cross-sectional view of line I-I' shown in Figure 1.

[0092] It was recognized that the air pressure of the device must be reduced to improve the acoustic characteristics of the low frequency range. For example, the acoustics of the vibration device can be improved by releasing the air pressure inside the device to the outside. Since the vibration device (200) is positioned between the display panel (100) and the support member (300), a structure capable of releasing air pressure to the outside may be required. To reduce the air pressure of the device by releasing air pressure to the outside, the support member (300) may include a plurality of holes (301). The plurality of holes (301) of the support member (300) may be placed in a predetermined area of ​​the support member (300) to reduce the air pressure of the gap space (GS) inside the device. For example, the plurality of holes (301) of the support member can expand the low frequency range as the air pressure of the gap space (GS) is reduced, thereby improving the acoustic characteristics of the low frequency range. If a hole (301) is not provided in the support member (300), the air pressure in the gap space (GS) may increase due to sound waves or acoustics generated by the vibration of the vibration device (200), thereby degrading the acoustic characteristics in the low frequency range. According to an embodiment of the present specification, by providing a hole (301) in the support member (300), air can be discharged through the hole (301) even if sound waves or acoustics are generated by the vibration of the vibration device (200), so the air pressure in the gap space (GS) can be lowered. As a result, the low frequency range can be expanded, and thus the acoustic characteristics in the low frequency range can be improved.

[0093] For example, the holes (301) may be positioned at locations that can reduce the air pressure in the gap space (GS) when sound waves are generated by the vibration of the vibration device (200). For example, the shape, number, and size of the holes (301) may be varied. As shown in FIG. 3, the holes (301) may be placed at predetermined intervals in the area of ​​the support member (300) corresponding to the vibration device (200). For example, the holes (301) may be placed along a part of the vibration device (200), for example, along the edge of the vibration device (200).

[0094] Accordingly, according to the embodiments of the present specification, by forming a hole in the support member, acoustic characteristics including low-frequency sound and / or sound pressure characteristics can be improved.

[0095] FIG. 4 is a drawing showing a vibration device according to an embodiment of the present specification. FIG. 5 is a cross-sectional view along line II-II' shown in FIG. 4.

[0096] Referring to FIGS. 2 through 5, a vibration device (200) according to an embodiment of the present specification may include a vibration generator (210). For example, the vibration generator (210) may include two or more vibration modules.

[0097] A vibration generator (210) according to an embodiment of the present specification may include a plurality of vibration modules (210A, 210B, 210C, 210D) that are electrically separated and spaced apart from each other along a first direction (X) (or horizontal direction) and a second direction (Y) (or vertical direction) intersecting the first direction (X), respectively. Each of the plurality of vibration modules (210A, 210B, 210C, 210D) may vibrate by alternately repeating contraction and expansion due to a piezoelectric effect (or piezoelectric property). A vibration generator (210) according to an embodiment of the present specification may directly vibrate a display panel (100) by vibrating in the thickness direction (Z) by alternately repeating contraction and expansion due to an inverse piezoelectric effect. The vibration generator (210) may include a plurality of vibration modules (210A, 210B, 210C, 210D) arranged at regular intervals or tiled. The vibration generator (210) may be a vibration array, a vibration array section, a vibration module array section, a vibration array structure, a tiled vibration array, a tiled array module, or a tiled vibration film, but is not limited to these terms.

[0098] Each of the plurality of vibration modules (210A, 210B, 210C, 210D) according to the embodiments of the present specification may have a rectangular shape or a square shape, but is not limited thereto. For example, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may have a rectangular shape with a width of 5 cm or more. For example, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may have a square shape with a size of 5 cm x 5 cm or more.

[0099] Each of the multiple vibration modules (210A, 210B, 210C, 210D) is arranged or tiled in an i-X-j pattern on the same plane, so that the vibration generator (210) can be expanded in a large area by tiling the multiple vibration modules (210A, 210B, 210C, 210D) having a relatively small size. For example, i is the number of vibration modules arranged along the first direction (X) and is a natural number greater than or equal to 2, and j is the number of vibration modules arranged along the second direction (Y) and is a natural number greater than or equal to i or different from i.

[0100] Each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be arranged at regular intervals or tiled so as to be implemented as a single vibration device (or single vibration device) that is not driven independently but is driven as a complete single unit. According to an embodiment of the present specification, with respect to a first direction (X), the first separation distance (D1) between the plurality of vibration modules (210A, 210B, 210C, 210D) may be 0.1 mm or more and less than 3 cm. Additionally, with respect to a second direction (Y), the second separation distance (D2) between the plurality of vibration modules (210A, 210B, 210C, 210D) may be 0.1 mm or more and less than 3 cm. For example, the first separation distance (D1) and the second separation distance (D2) may be the same. For example, the first separation distance (D1) and the second separation distance (D2) may be the same as each other within the process error range.

[0101] According to an embodiment of the present specification, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be driven as a single vibration device by being arranged or tiled to have a spacing (or gap) (D1, D2) of 0.1 mm or more and less than 3 cm. By doing so, the sound reproduction band and sound pressure characteristics of the sound generated in conjunction with the monolithic vibration of the plurality of vibration modules (210A, 210B, 210C, 210D) may each be increased. For example, in order to increase the sound reproduction band generated in conjunction with the monolithic vibration of a plurality of vibration modules (210A, 210B, 210C, 210D) and to increase the sound pressure characteristics of low-frequency sound, for example, at 500Hz or lower, the plurality of vibration modules (210A, 210B, 210C, 210D) may be arranged at intervals of 0.1mm or more and less than 5mm.

[0102] According to an embodiment of the present specification, when a plurality of vibration modules (210A, 210B, 210C, 210D) are arranged with a gap (D1, D2) of less than 0.1mm or without a gap (D1, D2), the reliability of the vibration modules (210A, 210B, 210C, 210D) or the vibration generator (210) may be reduced due to the occurrence of cracks or damage caused by physical contact between each of the vibration modules (210A, 210B, 210C, 210D) during vibration.

[0103] According to an embodiment of the present specification, when a plurality of vibration modules (210A, 210B, 210C, 210D) are arranged at a distance (D1, D2) of 3 cm or more, the plurality of vibration modules (210A, 210B, 210C, 210D) may not be driven as a single vibration device due to the independent vibration of each of the plurality of vibration modules (210A, 210B, 210C, 210D). As a result, the sound reproduction band and sound pressure characteristics of the sound generated in conjunction with the vibration of the plurality of vibration modules (210A, 210B, 210C, 210D) may be degraded. For example, when multiple vibration modules (210A, 210B, 210C, 210D) are arranged at a distance of 3 cm or more (D1, D2), acoustic characteristics and sound pressure characteristics in the low frequency range, for example, 500 Hz or lower, may be degraded, respectively.

[0104] According to an embodiment of the present specification, when a plurality of vibration modules (210A, 210B, 210C, 210D) are arranged at intervals of 5 mm, since each of the plurality of vibration modules (210A, 210B, 210C, 210D) is not driven by a single vibration device, acoustic characteristics and sound pressure characteristics may be degraded in the low frequency range, for example, 200 Hz or lower.

[0105] According to another embodiment of the present specification, when a plurality of vibration modules (210A, 210B, 210C, 210D) are arranged at intervals of 1 mm, the acoustic reproduction band is increased as the plurality of vibration modules (210A, 210B, 210C, 210D) vibrate as a single vibration device, and low-frequency acoustics, for example, sound pressure characteristics at 500 Hz or lower, can be increased. For example, when a plurality of vibration modules (210A, 210B, 210C, 210D) are arranged at intervals of 1 mm, the vibration generator (210) can be implemented as a large-area vibrator because the spacing distance between the plurality of vibration modules (210A, 210B, 210C, 210D) can be optimized. Accordingly, since the large-area vibrator can be driven by the single-body vibration of the multiple vibration modules (210A, 210B, 210C, 210D), the acoustic characteristics and sound pressure characteristics in the sound reproduction band and low-frequency band, respectively, generated in conjunction with the large-area vibration of the vibration generator (210) can be increased or improved.

[0106] Accordingly, in order to implement a single-body vibration (or a single vibration device) of multiple vibration modules (210A, 210B, 210C, 210D), the spacing between the multiple vibration modules (210A, 210B, 210C, 210D) may be set to be 0.1mm or more and less than 3cm. Additionally, in order to increase the sound pressure characteristics of low-frequency acoustics while implementing a single-body vibration (or a single vibration device) of multiple vibration modules (210A, 210B, 210C, 210D), the spacing between the multiple vibration modules (210A, 210B, 210C, 210D) may be set to be 0.1mm or more and less than 5mm.

[0107] A vibration generator (210) according to an embodiment of the present specification may include first to fourth vibration modules (210A, 210B, 210C, 210D). For example, the first to fourth vibration modules (210A, 210B, 210C, 210D) may be electrically separated and spaced apart from each other along a first direction (X) and a second direction (Y), respectively. For example, the first to fourth vibration modules (210A, 210B, 210C, 210D) may be arranged or tiled in a 2x2 configuration.

[0108] According to an embodiment of the present specification, the first and second vibration modules (210A, 210B) may be spaced apart from each other along a first direction (X). The third and fourth vibration modules (210C, 210D) may be spaced apart from each other along the first direction (X) and spaced apart from each of the first and second vibration modules (210A, 210B) along a second direction (Y). The first and third vibration modules (210A, 210C) may be spaced apart from each other along the second direction (Y) while facing each other. The second and fourth vibration modules (210B, 210D) may be spaced apart from each other along the second direction (Y) while facing each other.

[0109] According to an embodiment of the present specification, the first to fourth vibration modules (210A, 210B, 210C, 210D) may be arranged (or tiled) at intervals of 0.1 mm or more and less than 3 cm (D1, D2) along each of the first direction (X) and the second direction (Y), for driving as a single vibration device, monolithic vibration, or vibration as a large-area vibrating body of the vibration generator (210), or may be arranged (or tiled) at intervals of 0.1 mm or more and less than 5 mm (D1, D2).

[0110] Each of the first to fourth vibration modules (210A, 210B, 210C, 210D) according to the embodiments of the present specification may include a vibration part (211), a first electrode layer (E1), and a second electrode layer (E2).

[0111] The vibrating part (211) may include a piezoelectric material, a composite piezoelectric material, or an electroactive material that includes a piezoelectric effect. The vibrating part (211) may be expressed by other terms such as a vibrating layer, a piezoelectric material layer, a piezoelectric composite layer, an electroactive layer, a piezoelectric material part, a piezoelectric composite layer, an electroactive part, a piezoelectric structure, a piezoelectric composite, or a piezoelectric ceramic composite, but is not limited to these terms.

[0112] The vibrating member (211) according to the embodiments of this specification may be composed of a ceramic-based material capable of implementing relatively high vibration. For example, the vibrating member (211) may have a 1-3 composite structure or a 2-2 composite structure. For example, the piezoelectric deformation coefficient (d) of the vibrating member (211) according to the thickness direction (Z) 33 ) may be 1,000 pC / N or more, but is not limited thereto.

[0113] The first electrode layer (E1) is disposed on the first surface (or top surface) of the vibrating part (211) and may be electrically connected to the first surface of the vibrating part (211). For example, the first electrode layer (E1) may have a through electrode form disposed over the entire first surface of the vibrating part (211). The first electrode layer (E1) according to the embodiments of the present specification may be made of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the transparent or translucent conductive material may include ITO (indium tin oxide) or IZO (indium zinc oxide), but is not limited thereto. The opaque conductive material may include aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), or magnesium (Mg), or may be made of an alloy thereof, but is not limited thereto.

[0114] The second electrode layer (E2) is disposed on a second surface (or back surface) opposite to the first surface of the vibrating part (211) and may be electrically connected to the second surface of the vibrating part (211). For example, the second electrode layer (E2) may have a through electrode form disposed over the entire second surface of the vibrating part (211). The second electrode layer (E2) according to the embodiments of this specification may be made of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the second electrode layer (E2) may be made of the same material as the first electrode layer (E1), but is not limited thereto. As another example, the second electrode layer (E2) may be composed of a different material from the first electrode layer (E1).

[0115] The vibrating part (211) can be polarized by a constant voltage applied to the first electrode layer (E1) and the second electrode layer (E2) in a constant temperature atmosphere or a temperature atmosphere changing from high temperature to room temperature, but is not limited thereto.

[0116] The vibration generator (210) according to the embodiment of the present specification may further include a first protection member (213) and a second protection member (215).

[0117] The first protective member (213) may be disposed on the first surface of the vibration generator (210). For example, the first protective member (213) may cover the first electrode layer (E1) disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D). By doing so, the first protective member (213) may be commonly connected to the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) or may commonly support the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D). Accordingly, the first protective member (213) may protect the first surface or the first electrode layer (E1) of each of the plurality of vibration modules (210A, 210B, 210C, 210D).

[0118] According to an embodiment of the present specification, the first protective member (213) may be disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via the first adhesive layer (212). For example, the first protective member (213) may be directly disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) by a film laminating process via the first adhesive layer (212). Accordingly, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be integrated (or disposed) or tiled on the first protective member (213) to have a certain spacing (D1, D2).

[0119] The second protective member (215) may be disposed on the second surface of the vibration generator (210). For example, the second protective member (215) may cover the second electrode layer (E2) disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D). By doing so, the second protective member (215) may be commonly connected to the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) or may commonly support the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D). Accordingly, the second protective member (215) may protect the second surface or the second electrode layer (E2) of each of the plurality of vibration modules (210A, 210B, 210C, 210D).

[0120] According to an embodiment of the present specification, the second protective member (215) may be disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via the second adhesive layer (214). For example, the second protective member (215) may be directly disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) by a film laminating process via the second adhesive layer (214). Accordingly, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be integrated (or disposed) or tiled to the second protective member (215) so as to have a certain spacing (D1, D2).

[0121] Each of the first protective member (213) and the second protective member (215) according to the embodiments of the present specification may include a plastic film. For example, each of the first protective member (213) and the second protective member (215) may be a polyimide film or a polyethylene terephthalate film, but is not limited thereto.

[0122] The first adhesive layer (212) may be disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) and between the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first adhesive layer (212) may be formed on the rear surface (or inner surface) of the first protective member (213) facing the first surface of the vibration generator (210), disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D), and filled between the plurality of vibration modules (210A, 210B, 210C, 210D).

[0123] The second adhesive layer (214) may be disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) and between the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second adhesive layer (214) may be formed on the front (or inner surface) of the second protective member (215) facing the second surface of the vibration generator (210), disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D), and filled between the plurality of vibration modules (210A, 210B, 210C, 210D).

[0124] The first adhesive layer (212) and the second adhesive layer (214) may be connected or coupled to each other among a plurality of vibration modules (210A, 210B, 210C, 210D). Accordingly, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be surrounded by the first adhesive layer (212) and the second adhesive layer (214). For example, the first adhesive layer (212) and the second adhesive layer (214) may completely surround the entire plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first adhesive layer (212) and the second adhesive layer (214) may be represented by a cover member, but are not limited thereto. When the first adhesive layer (212) and the second adhesive layer (214) are cover members, the first protective member (213) may be disposed on the first surface of the cover member, and the second protective member (215) may be disposed on the second surface of the cover member. For example, the first adhesive layer (212) and the second adhesive layer (214) are shown as the first adhesive layer (212) and the second adhesive layer (214) for convenience of explanation, and may be disposed as a single adhesive layer.

[0125] Each of the first adhesive layer (212) and the second adhesive layer (214) according to the embodiments of the present specification may include an electrical insulating material that is adhesive and capable of compression and restoration. For example, each of the first adhesive layer (212) and the second adhesive layer (214) may include an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin, but is not limited thereto.

[0126] The vibration device (200) or vibration generator (210) according to the embodiment of the present specification may further include a first power supply line (PL1), a second power supply line (PL2), and a pad portion (201).

[0127] The first power supply line (PL1) may be placed on the first protective member (213). For example, it may be placed on the rear surface of the first protective member (213) facing the first surface of the vibration generator (210). The first power supply line (PL1) may be electrically connected to the first electrode layer (E1) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first power supply line (PL1) may be directly electrically connected to the first electrode layer (E1) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first power supply line (PL1) may be electrically connected to the first electrode layer (E1) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via an anisotropic conductive film. As another example, the first power supply line (PL1) can be electrically connected to the first electrode layer (E1) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) through a conductive material (or particle) contained in the first adhesive layer (212).

[0128] A first power supply line (PL1) according to an embodiment of the present specification may include first and second upper power lines (213a, 213b) arranged along a second direction (Y). For example, the first upper power line (213a) may be electrically connected to the first electrode layer (E1) of each of the first vibration module (210A) and the third vibration module (210C) (or the first group) that are parallel to the second direction (Y) among a plurality of vibration modules (210A, 210B, 210C, 210D). The second upper power line (213b) may be electrically connected to the first electrode layer (E1) of each of the second vibration module (210B) and the fourth vibration module (210D) (or the second group) that are parallel to the first direction (X) among a plurality of vibration modules (210A, 210B, 210C, 210D).

[0129] The second power supply line (PL2) may be placed on the second protection member (215). For example, the second power supply line (PL2) may be placed on the front of the second protection member (215) facing the second side of the vibration generator (210). The second power supply line (PL2) may be electrically connected to the second electrode layer (E2) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second power supply line (PL2) may be directly electrically connected to the second electrode layer (E2) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second power supply line (PL2) can be electrically connected to the second electrode layer (E2) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via an anisotropic conductive film. As another example, the second power supply line (PL2) can be electrically connected to the second electrode layer (E2) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) through a conductive material (or particle) contained in the second adhesive layer (214).

[0130] A second power supply line (PL2) according to an embodiment of the present specification may include a first lower power line (215a) and a second lower power line (215b) arranged along a second direction (Y). For example, the first lower power line (215a) may be electrically connected to the second electrode layer (E2) of each of the first vibration module (210A) and the third vibration module (210C) (or the first group) that are parallel to the second direction (Y) among a plurality of vibration modules (210A, 210B, 210C, 210D). The second lower power line (215b) can be electrically connected to the second electrode layer (E2) of each of the second vibration module (210B) and the fourth vibration module (210D) (or the second group) that are parallel to the first direction (X) among the plurality of vibration modules (210A, 210B, 210C, 210D).

[0131] The pad portion (201) may be electrically connected to a first power supply line (PL1) and a second power supply line (PL2). For example, the pad portion (201) may be placed in a vibration generator (210) so as to be electrically connected to one side (or one end) of each of the first power supply line (PL1) and the second power supply line (PL2). The pad portion (201) according to an embodiment of the present specification may include a first pad electrode and a second pad electrode. The first pad electrode may be electrically connected to one side of the first power supply line (PL1). The second pad electrode may be electrically connected to one side of the second power supply line (PL2).

[0132] The first pad electrode may be commonly connected to one side of each of the first upper power line (213a) and the second upper power line (213b) of the first power supply line (PL1). For example, one side of each of the first upper power line (213a) and the second upper power line (213b) may be branched from the first pad electrode.

[0133] The second pad electrode may be commonly connected to one side of each of the first lower power line (215a) and the second lower power line (215b) of the second power supply line (PL2). For example, one side of each of the first lower power line (215a) and the second lower power line (215b) may be branched from the second pad electrode.

[0134] The vibration device (200) or vibration generator (210) according to the embodiment of the present specification may further include a second hole (201h).

[0135] The second hole (201h) may overlap with the pad portion (201). For example, the second hole (201h) is formed to penetrate the first protective member (213) (or second protective member (215)) that overlaps with the pad portion (201), thereby exposing at least a portion of the pad portion (201) to the outside. For example, the second hole (201h) may be a hole through which wiring and / or cables are exposed to supply a vibration driving signal (or acoustic signal) provided from an acoustic processing circuit to a vibration device (200) or a vibration generator (210). For example, the second hole (201h) may be a pad hole or a pad exposure hole, but is not limited to these terms. For example, the pad portion (201) may be electrically connected to the vibration signal line portion described later. For example, the vibration signal line portion may be directly electrically connected to the pad electrode of the pad portion (201) by the second hole (201h).

[0136] The vibration generator (210) according to the embodiment of the present specification may further include a plate (216).

[0137] The plate (216) may be placed on the first protective member (213) or the second protective member (215). For example, the plate (216) may have the same shape as the first protective member (213) (or the second protective member (215)). For example, the plate (216) may have the same or larger size as the first protective member (213) (or the second protective member (215)).

[0138] A plate (216) according to an embodiment of the present specification may be disposed on the front surface (or first surface) of a first protective member (213). A plate (216) may be disposed on the front surface of the first protective member (213) of a vibration generator (210) via a connecting member. A plate (216) according to an embodiment of the present specification may be disposed between a display panel (100) and a vibration generator (210). For example, a plate (216) may be disposed on the rear surface of a display panel (100) via a connecting member (150).

[0139] According to another example, the plate (216) may be placed on the rear (or second side) of the second protective member (215). The plate (216) may be placed on the rear of the second protective member (215) of the vibration generator (210) via a connecting member. According to another example, the plate (216) may be placed between the vibration generator (210) and the support member (300).

[0140] The plate (216) according to the embodiment of the present specification may be made of one or more of the following materials: a metal material, for example, stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy, but is not limited thereto. The plate (216) is placed on the first protective member (213) (or the second protective member (215)) to reinforce the mass of the vibration generator (210), thereby reducing the resonance frequency of the vibration generator (210) due to the increase in mass, which increases the acoustic characteristics and sound pressure characteristics in the low frequency range generated in conjunction with the vibration of the vibration generator (210), and can improve the flatness of the acoustic characteristics. Here, the flatness of the acoustic characteristics may be the magnitude of the deviation between the highest sound pressure and the lowest sound pressure.

[0141] Accordingly, the vibration device (200) according to the embodiment of the present specification includes a vibration generator (210) having a plurality of vibration modules (210A, 210B, 210C, 210D) arranged (or tiled) at regular intervals (D1, D2) so as not to be driven independently but to be implemented as a single vibrating body, thereby enabling the vibration to be driven as a large-area vibrating body according to the single-body vibration of the plurality of vibration modules (210A, 210B, 210C, 210D). By doing so, the vibration device (200) can vibrate the entire area of ​​the display panel (100), and thus can increase or improve the acoustic characteristics and sound pressure characteristics in the sound reproduction band and low-frequency range, respectively, of the sound generated by the vibration of the display panel (100).

[0142] Additionally, the vibration device (200) according to the embodiment of the present specification may further include a plate (216) disposed on the vibration generator (210) so that the resonance frequency of the vibration generator (210) may be reduced. Accordingly, the vibration device (200) according to the embodiment of the present specification may increase the acoustic characteristics and sound pressure characteristics in the low frequency range generated by the vibration of the display panel (100) linked to the vibration of the vibration generator (210), and improve the flatness of the acoustic characteristics.

[0143] FIGS. 6a to 6f are drawings showing a vibration module according to an embodiment of the present specification.

[0144] Referring to FIGS. 4, 5, and 6a, each of the plurality of vibration modules (210A, 210B, 210C, 210D) arranged (or tiled) in the vibration generator (210) according to an embodiment of the present specification may include a vibration part (211). For example, the vibration device according to an embodiment of the present specification may include two or more vibration modules. For example, each of the two or more vibration modules may include a first part (211a) and a second part (211b). For example, the first part (211a) may include an inorganic material, and the second part (211b) may include an organic material. For example, the first part (211a) may have piezoelectric properties, and the second part (211b) may have ductile properties or flexibility. For example, the inorganic material of the first part (211a) may have piezoelectric properties, and the organic material of the second part (211b) may have ductile properties or flexibility. The vibrating part (211) may include a plurality of first parts (211a) and a plurality of second parts (211b). For example, a plurality of first parts (211a) and a plurality of second parts (211b) may be arranged alternately and repeatedly along the second direction (Y). Each of the plurality of first parts (211a) may be arranged between the plurality of second parts (211b). For example, each of the plurality of first parts (211a) may have a first width (W1) parallel to the second direction (Y) and a length parallel to the first direction (X). Each of the plurality of second parts (211b) may be arranged parallel to the second direction (Y). For example, each of the plurality of first parts (211a) may have a second width (W2) and a length parallel to the first direction (X). Each of the plurality of second parts (211b) may all have the same size, for example, width, area, or volume. For example, each of the plurality of second parts (211b) may all have the same size, for example, width, area, or volume, within the range of process error (or tolerance) occurring in the manufacturing process.The first width (W1) may be the same as or different from the second width (W2). For example, the first width (W1) may be larger than the second width (W2). For example, the first part (211a) and the second part (211b) may include a line shape or a stripe shape having the same or different sizes. Accordingly, the vibrating part (211) illustrated in FIG. 6a may have a resonance frequency of 20 kHz or less by having a 2-2 composite structure. Not limited thereto, the resonance frequency of the vibrating part (211) may be changed according to at least one of the shape, length, and thickness of the vibrating part.

[0145] Referring to FIGS. 4, 5, and 6b, each vibration part (211) of a plurality of vibration modules (210A, 210B, 210C, 210D) arranged in a vibration generator (210) according to another embodiment of the present specification may include a plurality of first parts (211a) and a plurality of second parts (211b) arranged alternately along a first direction (X). Each of the plurality of first parts (211a) may be arranged between the plurality of second parts (211b). For example, each of the plurality of first parts (211a) may have a third width (W3) parallel to the first direction (X) and a length parallel to the second direction (Y). Each of the plurality of second parts (211b) may have a fourth width (W4) parallel to the first direction (X) and a length parallel to the second direction (Y). The third width (W3) may be the same as or different from the fourth width (W4). For example, the third width (W3) may be larger than the fourth width (W4). For example, the first part (211a) and the second part (211b) may include a line shape or a stripe shape having the same or different sizes. Accordingly, the vibrating part (211) illustrated in FIG. 6b may have a resonance frequency of 20 kHz or less by having a 2-2 composite structure. Not limited thereto, the resonance frequency of the vibrating part (211) may be changed according to at least one of the shape, length, and thickness of the vibrating part.

[0146] In the vibrating part (211) illustrated in FIGS. 6a and 6b, each of the plurality of first parts (211a) and the plurality of second parts (211b) may be arranged (or arranged) side by side on the same plane (or same layer). Each of the plurality of second parts (211b) may be configured to fill the gap between two adjacent first parts (211a). Each of the plurality of second parts (211b) may be connected or bonded to an adjacent first part (211a). Accordingly, the vibrating part (211) may be extended to a desired size or length by the lateral joining (or connection) of the first part (211a) and the second part (211b).

[0147] In the vibrating part (or vibrating layer) (211) illustrated in FIG. 6a and 6b, the width (W2, W4) of each of the plurality of second parts (211b) may gradually decrease from the middle part of the vibrating part (211) or vibrating device toward the two edge parts (or both sides or both ends).

[0148] According to an embodiment of the present specification, among a plurality of second parts (211b), the second part (211b) having the largest width (W2, W4) may be located at the part where the greatest stress is concentrated when the vibrating part (211) or the vibrating device vibrates in the vertical direction (Z) (or thickness direction). Among a plurality of second parts (211b), the second part (211b) having the smallest width (W2, W4) may be located at the part where the relatively smallest stress is generated when the vibrating part (211) or the vibrating device vibrates in the vertical direction (Z). For example, among a plurality of second parts (211b), the second part (211b) having the largest width (W2, W4) may be placed in the middle part of the vibrating part (211), and among a plurality of second parts (211b), the second part (211b) having the smallest width (W2, W4) may be placed at both edges of the vibrating part (211). Accordingly, when the vibrating part (211) or the vibrating device vibrates in the vertical direction (Z), interference of sound waves or superposition of resonance frequencies generated at the part where the greatest stress is concentrated can be minimized, and as a result, the sound pressure drop (dipping) phenomenon occurring in the low frequency range can be improved, and the flatness of acoustic characteristics in the low frequency range can be improved. For example, the flatness of acoustic characteristics may be the magnitude of the deviation between the highest sound pressure and the lowest sound pressure.

[0149] In the vibrating part (211) illustrated in FIGS. 6a and 6b, each of the plurality of first parts (211a) may have a different size (or width). For example, the size (or width) of each of the plurality of first parts (211a) may decrease or increase as one moves from the middle part of the vibrating part (211) or the vibrating device toward the two edge parts (or both sides or both ends). In this case, the sound pressure characteristics of the sound may be enhanced by various natural vibration frequencies according to the vibration of each of the plurality of first parts (211a) having different sizes, and the sound reproduction band may be expanded.

[0150] Referring to FIGS. 4, 5, and 6c, each vibration part (211) of a plurality of vibration modules (210A, 210B, 210C, 210D) arranged in a vibration generator (210) according to another embodiment of the present specification may include a plurality of first parts (211a) spaced apart from each other along a first direction (X) and a second direction (Y), and a second part (211b) disposed between the plurality of first parts (211a). Each of the plurality of first parts (211a) may be disposed spaced apart from each other along the first direction (X) and the second direction (Y), respectively. For example, each of the plurality of first parts (211a) may be arranged in a grid shape having a hexahedral shape having the same size as each other. The second part (211b) may be disposed between the plurality of first parts (211a) along the first direction (X) and the second direction (Y), respectively. The second part (211b) may be configured to fill the gap between two adjacent first parts (211a) or to surround each of the multiple first parts (211a). By doing so, the second part (211b) may be connected to or bonded to the adjacent first part (211a). For example, the width of the second part (211b) positioned between two adjacent first parts (211a) along the first direction (X) may be the same as or different from the width of the first part (211a), and the width of the second part (211b) positioned between two adjacent first parts (211a) along the second direction (Y) may be the same as or different from the width of the first part (211a). Accordingly, the vibrating part (211) illustrated in FIG. 6c may have a resonance frequency of 30 MHz or less according to the 1-3 composite structure. Not limited to this, the resonance frequency of the vibrating part (211) may be changed according to at least one of the shape, length, and thickness of the vibrating part.

[0151] Referring to FIGS. 4, 5, and 6d, each vibration part (211) of a plurality of vibration modules (210A, 210B, 210C, 210D) arranged in a vibration generator (210) according to another embodiment of the present specification may include a plurality of first parts (211a) spaced apart from each other along a first direction (X) and a second direction (Y), and a second part (211b) surrounding each of the plurality of first parts (211a). Each of the plurality of first parts (211a) may have a circular planar structure. For example, each of the plurality of first parts (211a) may have a circular shape, but is not limited thereto, may have a point shape including an elliptical shape, a polygonal shape, or a donut shape. The second part (211b) may be configured to surround each of the plurality of first parts (211a). Accordingly, the second part (211b) may be connected to or bonded to the side of each of the plurality of first parts (211a). Each of the plurality of first parts (211a) and second parts (211b) may be arranged (or arranged) side by side on the same plane (or same layer). Accordingly, the vibrating part (211) illustrated in FIG. 6d may be implemented as a circular vibrating source (or vibrating body) having a 1-3 composite structure, thereby improving vibration characteristics or acoustic output characteristics and having a resonance frequency of 30 MHz or less. Not limited thereto, the resonance frequency of the vibrating part (211) may be changed according to at least one of the shape, length, and thickness of the vibrating part.

[0152] Referring to FIGS. 4, 5, and 6e, each vibration part (211) of a plurality of vibration modules (210A, 210B, 210C, 210D) arranged in a vibration generator (210) according to another embodiment of the present specification may include a plurality of first parts (211a) spaced apart from each other along a first direction (X) and a second direction (Y), and a second part (211b) surrounding each of the plurality of first parts (211a). Each of the plurality of first parts (211a) may have a triangular planar structure. For example, each of the plurality of first parts (211a) may have a triangular plate shape.

[0153] For example, among the plurality of first parts (211a), four adjacent first parts (211a) may be arranged adjacently to form a square shape (or a square shape). The vertices of each of the four adjacent first parts (211a) forming the square shape may be arranged adjacent to the center (or exact center) of the square shape. A second part (211b) may be configured to surround each of the plurality of first parts (211a). By doing so, the second part (211b) may be connected to or bonded to the sides of each of the plurality of first parts (211a). Each of the plurality of first parts (211a) and the second part (211b) may be arranged (or arranged) side by side on the same plane (or same layer). Accordingly, the vibrating part (211) illustrated in FIG. 6e may have a resonance frequency of 30 MHz or less according to the 1-3 composite structure. Not limited to this, the resonance frequency of the vibrating part (211) may be changed according to at least one of the shape, length, and thickness of the vibrating part.

[0154] According to another example, as illustrated in FIG. 6f, six adjacent first parts (211a) among a plurality of first parts (211a) may be arranged adjacently to form a hexagon (or regular hexagon). The vertices of each of the six adjacent first parts (211a) forming the hexagon may be arranged adjacent to the center (or center) of the hexagon. A second part (211b) may be configured to surround each of the plurality of first parts (211a). By doing so, the second part (211b) may be connected to or bonded to the sides of each of the plurality of first parts (211a). Each of the plurality of first parts (211a) and the second part (211b) may be arranged (or arranged) side by side on the same plane (or same layer). Accordingly, the vibrating part (211) illustrated in FIG. 6f can be implemented as a vibration source (or vibrator) that is close to a circular shape while having a 1-3 composite structure, thereby improving vibration characteristics or acoustic output characteristics, and can have a resonance frequency of 30 MHz or less. Not limited thereto, the resonance frequency of the vibrating part (211) can be changed according to at least one of the shape, length, and thickness of the vibrating part.

[0155] Referring to FIG. 6e and FIG. 6f, among a plurality of first parts (211a) having a triangular shape, 2N (N is a natural number greater than or equal to 2) adjacent first parts (211a) can be arranged adjacently to form a 2N-angle shape.

[0156] In FIGS. 6a to 6f, each of the plurality of first parts (211a) according to the embodiment of the present specification may be composed of an inorganic material part. The inorganic material part may include a piezoelectric material or an electroactive material. The piezoelectric material or electroactive material has the characteristic that a potential difference is generated by dielectric polarization due to the relative positional change of positive (+) ions and negative (-) ions as pressure or twisting phenomena act on the crystal structure by an external force, and conversely, vibration is generated by an electric field due to an applied voltage. As described in FIG. 5, the first surface of each of the plurality of first parts (211a) may be electrically connected to the first electrode layer (E1), and the second surface of each of the plurality of first parts (211a) may be electrically connected to the second electrode layer (E2).

[0157] In FIGS. 6a to 6f, the inorganic material portion formed in each of the plurality of first portions (211a) may be composed of a ceramic-based material capable of realizing relatively high vibrations or a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have piezoelectric and inverse piezoelectric effects and may be a plate-shaped structure having orientation. The perovskite crystal structure is represented by the chemical formula ABO3, where the A site is composed of a divalent metal element and the B site is composed of a tetravalent metal element. For example, in the chemical formula ABO3, the A site and the B site may be cations, and O may be anions. For example, it may include at least one of PbTiO3, PbZrO3, PbZrTiO3, BaTiO3, and SrTiO3, but is not limited thereto.

[0158] Perovskite crystal structures can generate a piezoelectric effect by changing the polarization of central ions—for example, Ti ions in the case of PbTiO3—due to external stress or magnetic fields. For instance, perovskite crystal structures can generate a piezoelectric effect by transforming from a symmetric cubic shape to an asymmetric shape, such as tetragonal, orthorhombic, or rhombohedral, under external stress or magnetic fields. Since the morphotropic phase boundary of the asymmetric tetragonal and rhombohedral structures exhibits high polarization and facilitates the rearrangement of polarization, high piezoelectric properties can be achieved.

[0159] According to an embodiment of the present specification, the inorganic material portion configured in each of the plurality of first portions (211a) may include one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), and niobium (Nb), but is not limited thereto.

[0160] According to another example, the inorganic material portion formed in each of the plurality of first portions (211a) may include a PZT (lead zirconate titanate) material comprising lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nickel niobate) material comprising lead (Pb), zinc (Zn), nickel (Ni), and niobium (Nb), but is not limited thereto. Alternatively, the inorganic material portion may include at least one of CaTiO3, BaTiO3, and SrTiO3 that do not contain lead (Pb), but is not limited thereto.

[0161] According to another example, the inorganic material portion configured in each of the plurality of first parts (211a) has a piezoelectric deformation coefficient (d) along the thickness direction (Z). 33 It can have a value of 1,000 pC / N or higher. The vibration device can be applied to large display panels, and in order to have sufficient vibration or piezoelectric characteristics, a high piezoelectric strain coefficient (d) 33 It is necessary to have ). For example, a high piezoelectric strain coefficient (d 33 In order to have ), the inorganic material part may include a PZT-based material (PbZrTiO3) as the main component, a softener dopant material doped at the A site (Pb), and a relaxor ferroelectric material doped at the B site (ZrTi).

[0162] Softener dopant materials can improve the piezoelectric and dielectric properties of the inorganic material part, for example, the piezoelectric strain coefficient (d) of the inorganic material part 33 ...can increase. The softener dopant material according to the embodiments of this specification may include a +2 to +3 valence element. Since a morphotropic phase boundary (MPB) can be formed by including the softener dopant material in a PZT-based material (PbZrTiO3), piezoelectric and dielectric properties can be improved. For example, the softener dopant material may include strontium (Sr), barium (Ba), lanthanum (La), niobium-neodymium (NbNd), calcium (Ca), yttrium (Y), erbium (Er), or ytterbium (Yb). For example, the ion (Sr) of the softener dopant material doped in the PZT-based material (PbZrTiO3) 2+ , Ba 2+ , La 2+ , Nb 5+ Nd 3+ , Ca 2+ , Y 3+ , Er 3+ , Yb 3+) substitutes a portion of lead (Pb) in PZT-based materials (PbZrTiO3), and the substitution amount can be 2 to 20 mol%. For example, if the substitution amount is less than 2 mol% or exceeds 20 mol%, the perovskite crystal structure breaks, so the electrical coupling coefficient (kP) and piezoelectric strain coefficient (d 33 ) can be reduced. When a softer dopant material is substituted, a morphotropic phase boundary can be formed, and since high piezoelectric and dielectric properties can be obtained in the phase boundary, a vibrating device having high piezoelectric and dielectric properties can be realized.

[0163] According to the embodiments of this specification, a relaxer ferroelectric material doped in a PZT-based material (PbZrTiO3) can improve the electrical deformation characteristics of an inorganic material portion. The relaxer ferroelectric material according to the embodiments of this specification may include a PMN (lead magnesium niobate)-based material or a PNN (lead nickel niobate)-based material, but is not limited thereto. The PMN-based material may include lead (Pb), magnesium (Mg), and niobium (Nb), and may be, for example, Pb(Mg, Nb)O3. The PNN-based material may include lead (Pb), nickel (Ni), and niobium (Nb), and may be, for example, Pb(Ni, Nb)O3. For example, a relaxer ferroelectric material doped in a PZT-based material (PbZrTiO3) substitutes a portion of zirconium (Zr) and titanium (Ti), respectively, in the PZT-based material (PbZrTiO3), and the substitution amount can be 5 to 25 mol%. For example, if the substitution amount is less than 5 mol% or exceeds 25 mol%, the perovskite crystal structure breaks, and thus the electrical coupling coefficient (kP) and the piezoelectric strain coefficient (d 33 ) may decrease.

[0164] According to an embodiment of the present specification, the inorganic material portion configured in each of the plurality of first portions (211a) may further include a donor material doped into the B site (ZrTi) of the PZT-based material (PbZrTiO3) to further improve the piezoelectric strain coefficient. For example, the donor material doped into the B site (ZrTi) may include a +4 to +6 valence element. For example, the donor material doped into the B site (ZrTi) may include tellurium (Te), germanium (Ge), uranium (U), niobium (Nb), tantalum (Ta), antimony (Sb), or tungsten (W).

[0165] The inorganic material portion configured in a plurality of first portions (211a) according to the embodiments of the present specification has a piezoelectric deformation coefficient (d) according to the thickness direction (Z). 33 Since it can have a value of 1,000 pC / N or more, a vibration device with improved vibration characteristics can be implemented. For example, a vibration device with improved vibration characteristics can be implemented in a large-area device.

[0166] In FIGS. 6a to 6f, the second part (211b) may be positioned between a plurality of first parts (211a) or to surround each of a plurality of first parts (211a). Accordingly, the vibration part (211) of the vibration generator (210) or the vibration device (200) may have increased vibration characteristics and secure piezoelectric properties and flexibility, as the vibration energy of the links within the unit grid of the first part (211a) may be increased by the second part (211b). For example, the second part (211b) may be one of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but is not limited thereto.

[0167] The second part (211b) according to the embodiment of the present specification may be composed of an organic material part. For example, the organic material part may be placed between the inorganic material parts to absorb shock applied to the inorganic material part (or the first part) and to relieve stress concentrated on the inorganic material part, thereby improving the durability of the vibration part (211) or vibration device of the vibration generator (210) and also providing flexibility to the vibration part (211) or vibration device of the vibration generator (210).

[0168] The second part (211b) according to the embodiment of the present specification may have a lower modulus and viscoelasticity compared to the first part (211a). This can improve the reliability of the first part (211a), which is vulnerable to impact due to the brittle characteristics of the first part (211a). For example, the second part (211b) may be composed of a material having a loss factor of 0.01 to 1 and a modulus of 0.1 to 3 [Gpa].

[0169] The organic material portion formed in the second portion (211b) may include an organic material, organic polymer, organic piezoelectric material, or organic non-piezoelectric material having flexible or ductile properties compared to the inorganic material portion of the first portion (211a). For example, the second portion (211b) may be described as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a ductile portion, but is not limited thereto.

[0170] Accordingly, the vibrating part (211) of the vibration generator (210) according to various embodiments of the present specification may have a single thin film form by having a plurality of first parts (211a) and second parts (211b) arranged (or connected) on the same plane. For example, the vibrating part (211) may vibrate in the up-and-down direction by the first part (211a) having vibration characteristics, and may be bent into a curved shape by the second part (211b) having flexibility or ductility. Furthermore, in the vibrating part (211) of the vibration generator (210) according to various embodiments of the present specification, the size of the first part (211a) and the size of the second part (211b) may be set according to the piezoelectric characteristics and flexibility required of the vibrating part (211). For example, in the case of a vibrating part (211) requiring piezoelectric characteristics rather than flexibility, the size of the first part (211a) may be configured to be larger than the size of the second part (211b). As another example, in the case of a vibrating part (211) requiring flexibility rather than piezoelectric properties, the size of the second part (211b) can be configured to be larger than the size of the first part (211a). Therefore, since the size of the vibrating part (211) can be adjusted according to the required characteristics, there is an advantage that the design of the vibrating part (211) is easy.

[0171] One or more of the vibration parts (211) shown in FIGS. 6a to 6f may be at least one of the vibration parts (211) among the plurality of vibration modules (210A, 210B, 210C, 210D) shown in FIG. 4. For example, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be implemented as one or more of the vibration parts (211) described in FIGS. 6a to 6f, according to the required acoustic characteristics generated in conjunction with the vibration of the vibration device (200).

[0172] According to an embodiment of the present specification, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may include one or more of the vibration parts (211) described in FIGS. 6a to 6f, or each may include different vibration parts (211).

[0173] According to an embodiment of the present specification, some of the vibration modules (210A, 210B, 210C, 210D) and each of the remaining vibration modules may include different vibration parts (211) among the vibration parts (211) described in FIGS. 6a to 6f. For example, in the first to fourth vibration modules (210A, 210B, 210C, 210D) illustrated in FIG. 4, each of the first and second vibration modules (210A, 210B) may include one or more vibration parts (211) among the vibration parts (211) described in FIG. 6a to 6f, and each of the third and fourth vibration modules (210C, 210D) may include a vibration part (211) different from the vibration part (211) of the first and second vibration modules (210A, 210B) among the vibration parts (211) described in FIG. 6b. For example, in the first to fourth vibration modules (210A, 210B, 210C, 210D) illustrated in FIG. 4, the first and fourth vibration modules (210A, 210D) arranged in the first diagonal direction may include one or more vibration parts (211) among the vibration parts (211) described in FIG. 6a to 6f, and the second and third vibration modules (210B, 210C) arranged in the second diagonal direction may include vibration parts (211) different from the first and fourth vibration modules (210A, 210D) arranged in the first diagonal direction among the vibration parts (211) described in FIG. 6a to 6f.

[0174] FIG. 7 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 7 is another cross-sectional view along line I-I' shown in FIG. 1.

[0175] A vibration device containing a single vibration generator has the problem of being unable to output sufficient sound. For example, when a vibration device containing a single vibration generator is configured in a device such as a TV, it is difficult to secure sufficient sound. Therefore, when a vibration device implemented with two vibration generators is applied to the device, the attachment area of ​​the vibration device to the display panel (100) or the object to be vibrated can be increased. As the attachment area increases, when attaching the vibration device to the back of the display panel (100), there was a problem that it was difficult to attach it to the back of the display panel (100) without air bubbles. For example, if the display panel (100) is a light-emitting display panel, there was a problem that it was difficult to attach it to the encapsulated substrate without air bubbles. Furthermore, a vibration device implemented by attaching two vibration generators arranged side by side has the problem of split vibration, where different vibrations occur because the vibrations between neighboring vibration generators are different. As a result, there is a problem that the flatness of the acoustic characteristics is reduced. There is a problem that split vibration increases as the attachment area of ​​the vibration device increases.

[0176] A vibration device (200) according to an embodiment of the present specification may include a plurality of vibration generators (210, 230) that are overlapped with each other. The vibration device (200) may include a plurality of vibration generators (210, 230) that are overlapped or stacked so as to be displaced in the same direction. For example, the vibration device (200) may include a plurality of vibration generators (210, 230) that are overlapped or stacked so as to have the same driving direction.

[0177] A plurality of vibration generators (210, 230) may be overlapped or stacked so as to be displaced (or driven) in the same direction. For example, each of the plurality of vibration generators (210, 230) may contract or expand in the same driving direction (or displacement direction) according to a vibration driving signal while overlapping or stacked, thereby increasing or maximizing the amount of displacement (or bending force) or amplitude displacement. By doing so, the plurality of vibration generators (210, 230) can improve acoustic characteristics including the mid-low frequency range and sound pressure characteristics of the sound generated by the vibration of the display panel (100) by increasing (or maximizing) the amount of displacement (or bending force) or amplitude displacement of the display panel (100). For example, the driving force of the plurality of vibration generators (210, 230) can be increased or maximized by implementing the plurality of vibration generators (210, 230) to be overlapped or stacked so as to have the same driving direction. As a result, the acoustic characteristics of the mid-low frequency range and the sound pressure characteristics of the sound generated in the display panel (100) according to the vibration of the multiple vibration generators (210, 230) can be improved. For example, the mid-low frequency range may be 200Hz to 1kHz, but is not limited thereto.

[0178] Each of the plurality of vibration generators (210, 230) may include a piezoelectric structure (vibrating part or piezoelectric vibrating part) comprising a piezoelectric ceramic having piezoelectric properties, but is not limited thereto. For example, each of the plurality of vibration generators (210, 230) according to the embodiment of the present specification may include a piezoelectric ceramic having a perovskite crystal structure so as to vibrate (or mechanically displace) in response to an externally applied electrical signal. For example, when a vibration driving signal (or voice signal) is applied to each of the plurality of vibration generators (210, 230), the displacement amount (or bending force) or amplitude displacement of the vibration device (200) or / and the display panel (100) may be increased or maximized by a bending phenomenon in which the bending direction alternately changes as the vibration device (vibrating part or piezoelectric vibrating part) alternately repeats contraction and expansion due to the inverse piezoelectric effect of the piezoelectric structure (vibrating part or piezoelectric vibrating part).

[0179] Among the plurality of vibration generators (210, 230), the first vibration generator (210) placed on the display panel (100) may be a single main vibration generator. For example, among the plurality of vibration generators (210, 230), the remaining second vibration generator (230) may be at least one auxiliary vibration generator stacked on the first vibration generator (210) while having the same structure as the first vibration generator (210). The second vibration generator (230) may have the same structure as the first vibration generator (210), but is not limited thereto.

[0180] The vibration device (200) according to the embodiment of the present specification may further include an adhesive member (250) (or a third connecting member) disposed between a plurality of vibration generators (210, 230).

[0181] An adhesive member (250) according to an embodiment of the present specification may be disposed between a plurality of vibration generators (210, 230). For example, the adhesive member (250) may be composed of a material having an adhesive layer with excellent adhesion or bonding strength for each of the plurality of vibration generators (210, 230). For example, the adhesive member (250) may include a foam pad, double-sided tape, or an adhesive, but is not limited thereto. For example, the adhesive layer of the adhesive member (250) may include epoxy, acrylic, silicone, or urethane, but is not limited thereto. For example, the adhesive layer of the adhesive member (250) may include a urethane-based material (or material) having relatively softer properties than acrylic among acrylic and urethane. Accordingly, vibration loss within the vibration device (200) due to displacement interference between multiple vibration generators (210, 230) is minimized, or each of the multiple vibration generators (210, 230) can be freely displaced.

[0182] A plurality of vibration generators (210, 230) according to the embodiments of the present specification can be integrated into a single structure (or part) by a laminating process using an adhesive.

[0183] The device according to the embodiment of the present specification may further include a connecting member (150) (or a first connecting member) disposed between the display panel (100) and the vibration device (200).

[0184] The connecting member (150) is positioned between the display panel (100) and the vibration device (200) so that the vibration device (200) can be connected or coupled to the rear surface of the display panel (100). For example, the vibration device (200) can be supported or positioned on the rear surface of the display panel (100) by being connected or coupled to the rear surface of the display panel (100) via the connecting member (150).

[0185] The connecting member (150) according to the embodiment of the present specification may be composed of a material that includes an adhesive layer having excellent adhesion or bonding strength to the rear surface of the display panel (100) and the vibration device (200), respectively. For example, the connecting member (150) may include a foam pad, double-sided tape, or adhesive, but is not limited thereto. For example, the adhesive layer of the connecting member (150) may include epoxy, acrylic, silicone, or urethane, but is not limited thereto. For example, the adhesive layer of the connecting member (150) may be different from or distinct from the adhesive layer of the adhesive member (250). For example, the adhesive layer of the connecting member (150) may include an acrylic-based material (or material) having characteristics of having relatively excellent adhesion and high hardness among acrylic and urethane so that the vibration of the vibration device (200) can be well transmitted to the display panel (100). By this, the vibration of the vibration device (200) can be effectively transmitted to the display panel (100).

[0186] The adhesive layer of the connecting member (150) may further include additives such as an adhesive promoter, a wax component, or an antioxidant. The additives can prevent the connecting member (150) from detaching (or peeling) from the display panel (100) due to the vibration of the vibration device (200). For example, the adhesive promoter may be a rosin derivative, and the wax component may be paraffin wax. For example, the antioxidant may be a phenolic antioxidant such as a thioester, but is not limited thereto.

[0187] According to another example, the connecting member (150) may further include a hollow portion provided between the display panel (100) and the vibration device (200). The hollow portion of the connecting member (150) may provide an air gap between the display panel (100) and the vibration device (200). The air gap ensures that sound waves (or sound pressure) resulting from the vibration of the vibration device (200) are not dispersed by the connecting member (150) but are concentrated on the display panel (100), thereby minimizing the loss of vibration caused by the connecting member (150) and increasing the sound pressure characteristics of the sound generated by the vibration of the display panel (100).

[0188] The device according to the embodiment of the present specification may further include a support member (300) and a middle frame (400) disposed on the rear surface of a display panel (100). Since the description of the support member (300) and the middle frame (400) is identical or similar to that described in FIGS. 1 and FIGS. 2, the description is omitted here.

[0189] The device according to the embodiment of the present specification may include a hole (301). Since the description of the hole (301) is the same or similar as that described in FIG. 3, the description is omitted here.

[0190] FIG. 8 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 8 is another cross-sectional view of line I-I' shown in FIG. 1.

[0191] Referring to FIGS. 1 and FIGS. 8, a vibration device (200) according to an embodiment of the present specification may include a plurality of vibration generators (210, 230) and an adhesive member (250). For example, the vibration device (200) may include two or more vibration modules.

[0192] A plurality of vibration generators (210, 230) may be overlapped or stacked so as to be displaced (or driven) in the same direction to maximize the amplitude displacement of the vibration device (200) and / or the amplitude displacement of the display panel (100). For example, the plurality of vibration generators (210, 230) may have substantially the same size as each other, but are not limited thereto. For example, the plurality of vibration generators (210, 230) may have substantially the same size as each other within a manufacturing process error range, but are not limited thereto. By doing so, the plurality of vibration generators (210, 230) can maximize the amplitude displacement of the vibration device (200) and / or the amplitude displacement of the display panel (100). One side (end or outer side or each corner portion) (210a, 230a) of each of the plurality of vibration generators (210, 230) may be aligned with or located on a virtual extension line (VL) that extends along the thickness direction (Z) of the display panel (100).

[0193] For example, at least one of the plurality of vibration generators (210, 230) has a displacement direction and amplitude displacement that do not match each other, so the amplitude displacement of the vibration device (200) cannot be maximized. For example, when at least one of the plurality of vibration generators (210, 230) has a different size that is outside the error range of the manufacturing process, the displacement direction and amplitude displacement of each of the plurality of vibration generators (210, 230) do not match each other, so the amplitude displacement of the vibration device (200) cannot be maximized. Also, when at least one of the plurality of vibration generators (210, 230) is displaced in a different direction, the displacement direction of each of the plurality of vibration generators (210, 230) does not match each other, so the amplitude displacement of the vibration device (200) cannot be maximized.

[0194] The vibration device (200) according to the embodiment of the present specification may include two or more vibration generators (210, 230) stacked to be displaced in the same direction. In the following description, the vibration device (200) will be described as being assumed to include a first and second vibration generator (210, 230).

[0195] According to an embodiment of the present specification, a first vibration generator (210) may be connected to or placed on the rear surface of a display panel (100) via a connecting member (150) (or a first connecting member). A second vibration generator (230) may be placed or attached to the first vibration generator (210) via an adhesive member (250) (or a third connecting member).

[0196] Each of the first and second vibration generators (210, 230) according to the embodiments of the present specification may include a vibration part (221), a first protection member (213), and a second protection member (215).

[0197] The vibrating part (221) may include a piezoelectric material (or piezoelectric element) having piezoelectric properties (or piezoelectric effect). For example, the piezoelectric material may have the characteristic that a potential difference is generated by dielectric polarization due to the change in the relative positions of positive (+) ions and negative (-) ions as pressure or twisting phenomena act on the crystal structure by an external force, and conversely, vibration is generated by an electric field due to an applied voltage.

[0198] A vibrating member (221) according to an embodiment of the present specification may include a vibrating layer (221a) comprising a piezoelectric material, a first electrode layer (221b) disposed on a first surface of the vibrating layer (221a), and a second electrode layer (221c) disposed on a second surface opposite to the first surface of the vibrating layer (221a).

[0199] The vibrating layer (221a) may include a piezoelectric material. The vibrating layer (221a) includes a piezoelectric material and may be expressed by other terms such as a piezoelectric layer, a piezoelectric material layer, an electrically active layer, a piezoelectric vibrating part, a piezoelectric material part, an electrically active part, an inorganic material layer, or an inorganic material part, but is not limited thereto.

[0200] The vibrating layer (221a) can be made of a transparent, translucent, or opaque piezoelectric material, so it may be transparent, translucent, or opaque. Since the vibrating layer (221a) is substantially the same as the description of the vibrating part (211) described in FIGS. 6a to 7, the description is omitted here.

[0201] The vibrating layer (221a) according to the embodiments of the present specification may be configured in a circular shape, an elliptical shape, or a polygonal shape, but is not limited thereto.

[0202] The first electrode layer (221b) may be placed on the first surface (or top surface) of the vibrating layer (221a). The second electrode layer (221c) may be placed on the other second surface (or back surface) opposite to the first surface of the vibrating layer (221a). Since the first electrode layer (221b) and the second electrode layer (221c) are substantially the same as the description of the first electrode layer (E1) and the second electrode layer (E2) described in FIGS. 4 and 5, the description may be omitted or simplified.

[0203] For example, the first electrode layer (221b) may have the same shape as the vibrating layer (221a), but is not limited thereto. For example, the second electrode layer (221c) may have the same shape as the vibrating layer (221a), but is not limited thereto.

[0204] In each of the first and second vibration generators (210, 230), the first electrode layer (221b) may be positioned closer to the display panel (100) than the second electrode layer (221c), but is not limited thereto. For example, in a vibration device (200) comprising a plurality of vibration generators (210, 230) according to the present specification, the first electrode layer (221b) of each of the plurality of vibration generators (210, 230) may be positioned closer to the display panel (100) than the second electrode layer (221c).

[0205] The vibrating layer (221a) may be polarized by a voltage applied to the first electrode layer (221b) and the second electrode layer (221c) in a constant temperature atmosphere or a temperature atmosphere changing from high temperature to room temperature, but is not limited thereto. For example, the vibrating layer (221a) may be displaced or vibrated by alternately repeating contraction and expansion due to an inverse piezoelectric effect according to a vibration driving signal (or acoustic signal or voice signal) applied from the outside to the first electrode layer (221b) and the second electrode layer (221c).

[0206] The vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may have the same size as the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230). In order to maximize or increase the displacement amount or amplitude displacement of the vibration device (200), the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may substantially overlap or be superimposed with the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230) without any misalignment. For example, the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may substantially overlap or be superimposed with the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230) within a manufacturing process error range without any misalignment. For example, the vibration part (221) (or vibration layer (221a)) of the first vibration generator (210) and the vibration part (221) (or vibration layer (221a)) of the second vibration generator (230) are implemented as a stacked structure that overlaps without staggering while having the same size, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device (200). For example, the vibration part (221) (or vibration layer (221a)) of the first vibration generator (210) and the vibration part (221) (or vibration layer (221a)) of the second vibration generator (230) are implemented as a stacked structure that overlaps without staggering while having the same size, thereby maximizing or increasing the displacement amount or amplitude displacement of the vibration device (200).

[0207] According to an embodiment of the present specification, each first part (end or outer surface or each corner part) (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be aligned with or located on a virtual extension line (VL). For example, each first part (end or outer surface or each corner part) (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be precisely aligned with or located on a virtual extension line (VL). Each second part (end or outer surface or each corner part) (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230) may be aligned with or located on a virtual extension line (VL). For example, each second part (end or outer surface or each corner part) (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230) may be precisely aligned with or positioned on a virtual extension line (VL). Each first part (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be aligned with or overlapped with each second part (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230). For example, each first part (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be precisely aligned with or overlapped with each second part (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230). For example, each first part (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may correspond to each second part (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230).Accordingly, in the vibration device (200) according to the present specification, the amount of displacement or amplitude displacement can be maximized or increased as the vibration part (221) (or the first vibration part) of the first vibration generator (210) and the vibration part (221) (or the second vibration part) of the second vibration generator (230) are displaced in the same direction. By doing so, the amount of displacement (or bending force) or amplitude displacement of the display panel (100) can be increased (or maximized).

[0208] In the first vibration generator (210), the first protective member (213) may be disposed on the first electrode layer (221b). The first protective member (213) may protect the first electrode layer (221b). The second protective member (215) may be disposed on the second electrode layer (221c). The second protective member (215) may protect the second electrode layer (221c). For example, the first protective member (213) and the second protective member (215) of the first vibration generator (210) may each be made of plastic, fiber, or wood, but are not limited thereto. For example, in the first vibration generator (210), the first protective member (213) may be made of the same or a different material as the second protective member (215). One or more of the first protective member (213) and the second protective member (215) of the first vibration generator (210) may be connected to or coupled to the rear surface of the display panel (100) via a connecting member (250) (or a third connecting member). For example, the first protective member (213) of the first vibration generator (210) may be connected to or coupled to the rear surface of the display panel (100) via a connecting member (250) (or a third connecting member).

[0209] In the second vibration generator (230), the first protective member (213) may be placed on the first electrode layer (221b). The first protective member (213) may protect the first electrode layer (221b). The second protective member (215) may be placed on the second electrode layer (221c). The second protective member (215) may protect the second electrode layer (221c). For example, the first protective member (213) and the second protective member (215) of the second vibration generator (230) may each be made of plastic, fiber, or wood, but are not limited thereto. For example, in the second vibration generator (230), the first protective member (213) may be made of the same or a different material as the second protective member (215). One or more of the first protective member (213) and the second protective member (215) of the second vibration generator (230) may be connected to or coupled to the rear surface of the first vibration generator (210) via a connecting member (250) (or a third connecting member). For example, the first protective member (213) of the second vibration generator (230) may be connected to or coupled to the second protective member (215) of the first vibration generator (210) via the connecting member (250).

[0210] In each of the first and second vibration generators (210, 230), each of the first and second protective members (213, 215) made of plastic material may be made of plastic material. For example, each of the first and second protective members (213, 215) may be a polyimide film or a polyethylene terephthalate film, but is not limited thereto.

[0211] One or more of the first and second vibration generators (210, 230) according to the embodiments of the present specification may further include a first adhesive layer (212) and a second adhesive layer (214).

[0212] In the first vibration generator (210), the first adhesive layer (212) may be disposed between the vibration part (221) and the first protective member (213). For example, the first adhesive layer (212) may be disposed between the first electrode layer (221b) of the vibration part (221) and the first protective member (213). The first protective member (213) may be disposed on the first surface (or first electrode layer (221b)) of the vibration part (221) via the first adhesive layer (212). For example, the first protective member (213) may be bonded or connected to the first surface (or first electrode layer (221b)) of the vibration part (221) by a laminating process via the first adhesive layer (212).

[0213] In the first vibration generator (210), the second adhesive layer (214) may be disposed between the vibration part (221) and the second protective member (215). For example, the second adhesive layer (214) may be disposed between the second electrode layer (221c) of the vibration part (221) and the second protective member (215). The second protective member (215) may be disposed on the second surface (or second electrode layer (221c)) of the vibration part (221) via the second adhesive layer (214). For example, the second protective member (215) may be bonded or connected to the second surface (or second electrode layer (221c)) of the vibration part (221) by a laminating process via the second adhesive layer (214).

[0214] In the first vibration generator (210), the first adhesive layer (212) and the second adhesive layer (214) may be connected or coupled to each other between the first protective member (213) and the second protective member (215). For example, in the first vibration generator (210), the first adhesive layer (212) and the second adhesive layer (214) may be connected or coupled to each other at the edge portion between the first protective member (213) and the second protective member (215). Accordingly, in the first vibration generator (210), the vibrating part (221) may be surrounded by the first adhesive layer (212) and the second adhesive layer (214). For example, the first adhesive layer (212) and the second adhesive layer (214) may completely surround the entire vibrating part (221) of the first vibration generator (210). For example, the first adhesive layer (212) and the second adhesive layer (214) may be represented as a cover member, but are not limited thereto. When the first adhesive layer (212) and the second adhesive layer (214) are cover members, the first protective member (213) may be placed on the first surface of the cover member, and the second protective member (215) may be placed on the second surface of the cover member. For example, the first adhesive layer (212) and the second adhesive layer (214) are illustrated as the first adhesive layer (212) and the second adhesive layer (214) for convenience of explanation, and may be arranged as a single adhesive layer.

[0215] In the second vibration generator (230), the first adhesive layer (212) may be disposed between the vibration part (221) and the first protective member (213). For example, the first adhesive layer (212) may be disposed between the first electrode layer (221b) of the vibration part (221) and the first protective member (213). The first protective member (213) may be disposed on the first surface (or first electrode layer (221b)) of the vibration part (221) via the first adhesive layer (212). For example, the first protective member (213) may be bonded or connected to the first surface (or first electrode layer (221b)) of the vibration part (221) by a laminating process via the first adhesive layer (212).

[0216] In the second vibration generator (230), the second adhesive layer (214) may be disposed between the vibration part (221) and the second protective member (215). For example, the second adhesive layer (214) may be disposed between the second electrode layer (221c) of the vibration part (221) and the second protective member (215). The second protective member (215) may be disposed on the second surface (or second electrode layer (221c)) of the vibration part (221) via the second adhesive layer (214). For example, the second protective member (215) may be bonded or connected to the second surface (or second electrode layer (221c)) of the vibration part (221) by a laminating process via the second adhesive layer (214).

[0217] In the second vibration generator (230), the first adhesive layer (212) and the second adhesive layer (214) may be connected or coupled to each other between the first protective member (213) and the second protective member (215). For example, in the second vibration generator (230), the first adhesive layer (212) and the second adhesive layer (214) may be connected or coupled to each other at the edge portion between the first protective member (213) and the second protective member (215). Accordingly, in the second vibration generator (230), the vibrating part (221) may be surrounded by the first adhesive layer (212) and the second adhesive layer (214). For example, the first adhesive layer (212) and the second adhesive layer (214) may completely surround the entire vibrating part (221) of the second vibration generator (230). For example, the first adhesive layer (212) and the second adhesive layer (214) may be represented as a cover member, but are not limited thereto. When the first adhesive layer (212) and the second adhesive layer (214) are cover members, the first protective member (213) may be placed on the first surface of the cover member, and the second protective member (215) may be placed on the second surface of the cover member. For example, the first adhesive layer (212) and the second adhesive layer (214) are illustrated as the first adhesive layer (212) and the second adhesive layer (214) for convenience of explanation, and may be arranged as a single adhesive layer.

[0218] In each of the first and second vibration generators (210, 230), the first adhesive layer (212) and the second adhesive layer (214) may each include an electrical insulating material. For example, the electrical insulating material may be a material that is adhesive and capable of compression and recovery. For example, one or more of the first adhesive layer (212) and the second adhesive layer (214) may include epoxy resin, acrylic resin, silicone resin, or urethane resin, but are not limited thereto.

[0219] One or more of the first vibration generator (210) and the second vibration generator (230) according to the embodiments of the present specification may further include a first power supply line (PL1) and a second power supply line (PL2).

[0220] One or more of the first power supply lines (PL1) of the first vibration generator (210) and the second vibration generator (230) may be extended along the second direction (Y), but are not limited thereto. The first power supply lines (PL1) may be placed on the first protection member (213) and electrically connected to the first electrode layer (221b). For example, the first power supply lines (PL1) may be placed on the rear side of the first protection member (213) facing the first electrode layer (221b) and electrically connected to the first electrode layer (221b). For example, the first power supply lines (PL1) may be placed on the rear side of the first protection member (213) facing the first electrode layer (221b) and electrically directly connected to the first electrode layer (221b). For example, the first power supply line (PL1) can be electrically connected to the first electrode layer (221b) via an anisotropic conductive film. As another example, the first power supply line (PL1) can be electrically connected to the first electrode layer (221b) through a conductive material (or particle) contained in the first adhesive layer (212).

[0221] For example, one or more of the first power supply lines (PL1) of the first vibration generator (210) and the second vibration generator (230) may include at least one first power line protruding along the first direction (X) across the second direction (Y). At least one first power line may extend from at least one of one side and the other side of the first power supply line (PL1) along the second direction (Y) and may be electrically connected to the first electrode layer (221b). Accordingly, at least one first power line may improve the uniformity of the vibration driving signal applied to the first electrode layer (221b).

[0222] One or more of the first vibration generator (210) and the second vibration generator (230) may have a second power supply line (PL2) disposed in the second protection member (215) and electrically connected to the second electrode layer (221c). For example, the second power supply line (PL2) may be disposed on the rear side of the second protection member (215) facing the second electrode layer (221c) and electrically connected to the second electrode layer (221c). For example, the second power supply line (PL2) may be disposed on the rear side of the second protection member (215) facing the second electrode layer (221c) directly and electrically directly connected to the second electrode layer (221c). For example, the second power supply line (PL2) may be electrically connected to the second electrode layer (221c) via an anisotropic conductive film. As another example, the second power supply line (PL2) can be electrically connected to the second electrode layer (221c) through a conductive material (or particle) contained in the second adhesive layer (214).

[0223] For example, one or more of the first vibration generator (210) and the second vibration generator (230) may include at least one second power line protruding along the first direction (X). At least one second power line may extend from at least one of one side and the other side of the second power line (PL2) along the first direction (X) and may be electrically connected to the second electrode layer (221c). At least one second power line may overlap or be superimposed with at least one first power line. Accordingly, at least one second power line may improve the uniformity of the vibration driving signal applied to the second electrode layer (221c).

[0224] The pad portion may be configured as described in FIGS. 1 and 2. The pad portion may be electrically connected to one or more first portions (one side or one end) of the first power supply line (PL1) and the second power supply line (PL2). For example, the pad portion may be placed on one or more first edge portions of the first protective member (213) and the second protective member (215). The pad portion may be electrically connected to one or more first portions (one side or one end) of the first power supply line (PL1) and the second power supply line (PL2).

[0225] The pad portion may include a first pad electrode electrically connected to a first portion (one side or one end) of a first power supply line (PL1), and a second pad electrode electrically connected to a first portion (one side or one end) of a second power supply line (PL2). For example, one or more of the first pad electrode and the second pad electrode may be exposed to one or more first edge portions of the first protective member (213) and the second protective member (215).

[0226] For example, the pad portion may supply a vibration driving signal (or acoustic signal) provided from a vibration driving circuit to the corresponding vibration portion (221). The vibration driving circuit (or acoustic processing circuit) may generate an alternating current type vibration driving signal including a first vibration driving signal and a second vibration driving signal based on an acoustic source. The first vibration driving signal may be either a positive (+) vibration driving signal or a negative (-) vibration driving signal, and the second vibration driving signal may be either a positive (+) vibration driving signal or a negative (-) vibration driving signal. As an example, the first vibration driving signal may be supplied to the first electrode layer (221b) of the vibration portion (221) through the first pad electrode of the pad portion and the first power supply line (PL1). The second vibration driving signal may be supplied to the second electrode layer (221c) of the vibration portion (221) through the second pad electrode of the pad portion and the second power supply line (PL2). As another example, the first vibration driving signal can be supplied to the second electrode portion (211c) of the vibration portion (221) through the second pad electrode of the pad portion and the second power supply line (PL2). The second vibration driving signal can be supplied to the first electrode layer (221b) of the vibration portion (221) through the first pad electrode of the pad portion and the first power supply line (PL1).

[0227] A connecting member (250) according to an embodiment of the present specification may be disposed between a first vibration generator (210) and a second vibration generator (230). For example, the connecting member (250) may be disposed between a first protective member (213) of the first vibration generator (210) and a second protective member (215) of the second vibration generator (230). For example, the connecting member (250) may be composed of a material that includes an adhesive layer having excellent adhesion or bonding strength for each of the plurality of vibration generators (210, 230). For example, the connecting member (250) may include a foam pad, double-sided tape, or an adhesive. For example, the adhesive layer of the connecting member (250) may include epoxy, acrylic, silicone, or urethane, but is not limited thereto.

[0228] In FIG. 8 and the related description, the vibration device (200) according to an embodiment of the present specification is described as including a first vibration generator (210) and a second vibration generator (230), and a connecting member (250) disposed between the first vibration generator (210) and the second vibration generator (230), but is not limited thereto. For example, the vibration device (200) according to an embodiment of the present specification may include a plurality (e.g., three or more) of vibration generators (210, 230) and a connecting member (250) disposed between the plurality of vibration generators (210, 230), depending on the sound output characteristics and sound pressure characteristics generated according to the displacement of the display panel (100) based on the size and weight of the display panel (100). In this case as well, multiple vibration generators (210, 230) may overlap each other while having the same size to maximize or increase the displacement amount or amplitude displacement of the vibration device (200). For example, the first and second parts (ends or outer surfaces or each corner part) (210a, 230a) of each of one or more vibration parts (221) (or vibration layers (221a)) among the multiple vibration generators (210, 230) may substantially overlap or be superimposed on each other without any misalignment. For example, the first and second parts (ends or outer surfaces or each corner part) (210a, 230a) of each of one or more vibration parts (221) (or vibration layers (221a)) among the multiple vibration generators (210, 230) may substantially overlap or be superimposed on each other within a manufacturing process error range without any misalignment. For example, each first and second part (end or outer surface or each corner part) (210a, 230a) of each of the vibration parts (221) (or vibration layers (221a)) of each of the plurality of vibration generators (210, 230) may be aligned with or located on a virtual extension line (VL).For example, each first and second part (end or outer surface or each corner part) (210a, 230a) of each of the vibration parts (221) (or vibration layers (221a)) of each of the multiple vibration generators (210, 230) may be precisely aligned with or positioned on a virtual extension line (VL).

[0229] Figure 9 is another cross-sectional view of line II-II' shown in Figure 4.

[0230] Referring to FIG. 4 and FIG. 9, in a vibration device (200) according to another embodiment of the present specification, each of the first vibration generator (210) and the second vibration generator (230) may include at least one vibration module (210A, 210B, 210C, 210D) or a plurality of vibration modules (210A, 210B, 210C, 210D). FIG. 9 illustrates an example including four vibration modules, and each of the first vibration generator (210) and the second vibration generator (230) according to an embodiment of the present specification may be composed of two or more vibration modules.

[0231] Each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be spaced apart from each other along the first direction (X) and the second direction (Y), respectively, and may be electrically separated.

[0232] Each of the plurality of vibration modules (210A, 210B, 210C, 210D) can vibrate by alternately repeating contraction and expansion due to the piezoelectric effect. For example, each of the plurality of vibration modules (210A, 210B, 210C, 210D) may be arranged at regular intervals along the first direction (X) and the second direction (Y), respectively. Accordingly, each of the first vibration generator (210) and the second vibration generator (230) in which the plurality of vibration modules (210A, 210B, 210C, 210D) are tiled may be a vibration array, a vibration array section, a vibration module array section, a vibration array structure, a tiling vibration array, a tiling array module, or a tiling vibration film, but is not limited to these terms. The description of the multiple vibration modules (210A, 210B, 210C, 210D) is substantially the same as that described in FIG. 4, so the description may be omitted or briefly described.

[0233] Each of the first to fourth vibration modules (210A, 210B, 210C, 210D) according to the embodiments of the present specification may include a vibration part (221). The vibration part (221) may include a vibration layer (221a), a first electrode layer (221b), and a second electrode layer (221c). Since the description of the vibration layer (221a), the first electrode layer (221b), and the second electrode layer (221c) is the same as that described in FIGS. 4, 5, and 8, the description may be omitted or briefly described.

[0234] The vibration layer (221a) may be composed of a ceramic-based material capable of implementing relatively high vibration. For example, the vibration layer (221a) may have a 1-3 composite having piezoelectric properties of 1-3 vibration modes or a 2-2 composite having piezoelectric properties of 2-2 vibration modes. For example, the vibration layer (221a) may include a first part (211a) and a second part (211b) identical to the vibration part (211) described in FIG. 4 or identical to the vibration layer (211) described in FIG. 6.

[0235] The first protective member (1213) according to the present specification may be disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via the first adhesive layer (1212). The second protective member (1215) may be disposed on the second surface of each of the first vibration generator (210) and the second vibration generator (230). Since the first protective member (1213) and the second protective member (1215) are substantially identical to the first protective member (213) and the second protective member (215) described in FIGS. 4, 5, and 8, a description is omitted.

[0236] The first adhesive layer (1212) may be disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) and between the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first adhesive layer (1212) may be disposed on the rear surface (or inner surface) of the first protective member (1213) facing the first surface of each of the first vibration generator (210) and the second vibration generator (230). For example, the first adhesive layer (1212) may be disposed on the first surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) and filled between the plurality of vibration modules (210A, 210B, 210C, 210D).

[0237] The second adhesive layer (1214) may be disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) and between the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second adhesive layer (1214) may be disposed on the front (or inner surface) of the second protective member (1215) facing the second surface of each of the first vibration generator (210) and the second vibration generator (230). For example, the second adhesive layer (1214) may be disposed on the second surface of each of the plurality of vibration modules (210A, 210B, 210C, 210D) and filled between the plurality of vibration modules (210A, 210B, 210C, 210D). The first adhesive layer (1212) and the second adhesive layer (1214) are substantially the same as the first adhesive layer (212) and the second adhesive layer (214) described in FIGS. 4, 5, and 8, so the description is omitted.

[0238] One or more of the first vibration generator (210) and the second vibration generator (230) according to another embodiment of the present specification may further include a first power supply line (PL1) and a second power supply line (PL2).

[0239] The first power supply line (PL1) may be placed on the first protective member (1213). For example, the first power supply line (PL1) may be placed on the rear surface of the first protective member (1213) facing the first surface of each of the first vibration generator (210) and the second vibration generator (230). The first power supply line (PL1) may be electrically connected to the first electrode layer (221b) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first power supply line (PL1) may be electrically connected to the first electrode layer (221b) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first power supply line (PL1) may be directly electrically connected to the first electrode layer (221b) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). As an example, the first power supply line (PL1) may be electrically connected to the first electrode layer (221b) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via an anisotropic conductive film. As another example, the first power supply line (PL1) may be electrically connected to the first electrode layer (221b) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) through a conductive material (or particle) contained in the first adhesive layer (1212).

[0240] The first power supply line (PL1) according to the present specification may include a first-1 upper power line (PL11) and a first-2 upper power line (PL12) arranged along the second direction (Y). For example, the first-1 upper power line (PL11) may be electrically connected to the first electrode layer (221b) of each of the first and third vibration modules (210A, 210C) (or the first group) that are parallel to the second direction (Y) among the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first and third vibration modules (210A, 210C) may be arranged in a first row parallel to the second direction (Y) among the plurality of vibration modules (210A, 210B, 210C, 210D). The first-second upper power line (PL12) can be electrically connected to the first electrode layer (221b) of each of the second and fourth vibration modules (210B, 210D) (or the second group) that are parallel to the first direction (X) among the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second and fourth vibration modules (210B, 210D) can be arranged in the second row parallel to the first direction (X) among the plurality of vibration modules (210A, 210B, 210C, 210D).

[0241] A second power supply line (PL2) may be placed on a second protective member (1215). For example, the second power supply line (PL2) may be placed on a first surface of the second protective member (1215) facing the second surface of each of the first vibration generator (210) and the second vibration generator (230). For example, the first surface may be the lower surface of the second protective member (1215). The second power supply line (PL2) may be electrically connected to the second electrode layer (221c) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second power supply line (PL2) may be directly electrically connected to the second electrode layer (221c) of each of the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second power supply line (PL2) can be electrically connected to the second electrode layer (221c) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) via an anisotropic conductive film. As another example, the second power supply line (PL2) can be electrically connected to the second electrode layer (221c) of each of the plurality of vibration modules (210A, 210B, 210C, 210D) through a conductive material (or particle) contained in the second adhesive layer (1214).

[0242] The second power supply line (PL2) according to the present specification may include second-1 and second-2 lower power lines (PL21, PL22) arranged along the second direction (Y). For example, the second-1 lower power line (PL21) may be electrically connected to the second electrode layer (221c) of each of the first and third vibration modules (210A, 210C) (or the first group) that are parallel to the second direction (Y) among the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the first and third vibration modules (210A, 210C) may be arranged in the first row parallel to the second direction (Y) among the plurality of vibration modules (210A, 210B, 210C, 210D). The second-2 lower power line (PL22) can be electrically connected to the second electrode layer (221c) of each of the second and fourth vibration modules (210B, 210D) (or the second group) that are parallel to the second direction (Y) among the plurality of vibration modules (210A, 210B, 210C, 210D). For example, the second and fourth vibration modules (210B, 210D) can be arranged in the second row parallel to the second direction (Y) among the plurality of vibration modules (210A, 210B, 210C, 210D).

[0243] As described in FIGS. 4 and 5, a pad portion may be configured. The pad portion may be electrically connected to a first power supply line (PL1) and a second power supply line (PL2). For example, the pad portion may be placed in each of the first vibration generator (210) and the second vibration generator (230) so as to be electrically connected to at least one side (or one end) of the first power supply line (PL1) and the second power supply line (PL2).

[0244] For example, the pad portion may include a first pad electrode electrically connected to one side of a first power supply line (PL1) and a second pad electrode electrically connected to one side of a second power supply line (PL2).

[0245] The first pad electrode may be commonly connected to one side (or one end) of each of the first-1 and first-2 upper power lines (PL11, PL12) of the first power supply line (PL1). For example, one side (or one end) of each of the first-1 and first-2 upper power lines (PL11, PL12) may be branched from the first pad electrode.

[0246] The second pad electrode may be commonly connected to one side (or one end) of each of the second-1 and second-2 lower power lines (PL21, PL22) of the second power supply line (PL2). For example, one side (or one end) of each of the second-1 and second-2 lower power lines (PL21, PL22) may be branched from the second pad electrode. For example, the pad portion may supply a vibration driving signal provided from the vibration driving circuit to each of the first vibration generator (210) and the second vibration generator (230).

[0247] According to the present specification, one or more of the first power supply line (PL1), the second power supply line (PL2), and the pad portion may be made of a transparent conductive material, a translucent conductive material, or an opaque conductive material so as to be transparent, translucent, or opaque.

[0248] Accordingly, a vibration device (200) according to another embodiment of the present specification may be driven as a large-area vibration body by the single-body vibration of the plurality of vibration modules (210A, 210B, 210C, 210D) by including a plurality of vibration modules (210A, 210B, 210C, 210D) arranged (or tiled) at regular intervals (D1, D2) so that the first vibration generator (210) and the second vibration generator (230) are not driven independently but are implemented as a single vibration body. For example, the plurality of vibration modules (210A, 210B, 210C, 210D) may be a single vibration body arranged (or tiled) at regular intervals (D1, D2). Accordingly, since the entire area of ​​the display panel can be vibrated or vibrated over a large area on its own, the acoustic characteristics and sound pressure characteristics in the playback band and low frequency range of the sound output from the display panel can be increased or improved, respectively.

[0249] Figure 10 is a drawing showing the vibrating part illustrated in Figure 8.

[0250] Referring to FIG. 10, the vibration layer (221a) according to the present specification may include a plurality of first portions (221a1) and a plurality of second portions (221a2). For example, the plurality of first portions (221a1) and the plurality of second portions (221a2) may be arranged alternately and repeatedly along a second direction (Y) (or a first direction (X)). For example, the first direction (X) may be the horizontal direction of the vibration layer (221a), and the second direction (Y) may be the vertical direction of the vibration layer (221a) intersecting the first direction (X), but is not limited thereto. For example, the first direction (X) may be the vertical direction of the vibration layer (221a), and the second direction (Y) may be the horizontal direction of the vibration layer (221a).

[0251] Each of the plurality of first parts (221a1) may be composed of an inorganic material part. The inorganic material part may include the aforementioned material. For example, since each of the plurality of first parts (221a1) may be made of substantially the same material as the vibrating part (211) described in FIGS. 6a to 6f, a redundant description thereof is omitted.

[0252] Each of the plurality of first parts (221a1) according to the present specification may be placed between the plurality of second parts (221a2). Since the plurality of first parts (221a1) and the plurality of second parts (221a2) are substantially identical to the plurality of first parts (211a) and the plurality of second parts (211b) described in FIGS. 5a to 5f, a redundant description thereof is omitted.

[0253] The vibrating part (221) of the first vibration generator (210) and the vibrating part (221) of the second vibration generator (230) may overlap each other while having the same size to maximize or increase the amount of displacement or amplitude displacement of the vibration device (200). For example, each first part (end or outer surface or each corner part) (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be substantially aligned or overlapped with each second part (end or outer surface or each corner part) (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230). For example, each first part (end or outer surface or each corner part) (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be substantially aligned or overlapped within a manufacturing process error range without being misaligned with each second part (end or outer surface or each corner part) (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230). For example, each first part (end or outer surface or each corner part) (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be aligned with or located on a virtual first extension line (VL1). Each first part (end or outer surface or each corner part) (210a) of the vibrating part (221) (or vibrating layer (221a)) of the first vibration generator (210) may be precisely aligned with or located on the first extension line (VL1). Each second part (end or outer surface or each corner part) (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230) may be aligned with or located on the first extension line (VL1).For example, each second part (end or outer surface or each corner part) (230a) of the vibrating part (221) (or vibrating layer (221a)) of the second vibration generator (230) may be precisely aligned with or positioned on the first extension line (VL1).

[0254] According to the present specification, a plurality of first parts (221a1) of the first vibration generator (210) may substantially overlap or be superimposed with a plurality of first parts (221a1) of the second vibration generator (230) while having the same size as each other. For example, a plurality of first parts (221a1) of the first vibration generator (210) may substantially overlap or be superimposed with a plurality of first parts (221a1) of the second vibration generator (230) without being misaligned while having the same size as each other. According to the present specification, each first part (end or outer surface or each corner part) of each of the plurality of first parts (221a1) of the first vibration generator (210) may substantially overlap or be superimposed with each first part (end or outer surface or each corner part) of the plurality of first parts (221a1) of the second vibration generator (230). For example, each first part (end or outer surface or corner part) of each of the plurality of first parts (221a1) of the first vibration generator (210) may substantially overlap or be superimposed with each first part (end or outer surface or corner part) of each of the plurality of first parts (221a1) of the second vibration generator (230) without being misaligned. For example, each first part (end or outer surface or corner part) of each of the plurality of first parts (221a1) of the first vibration generator (210) may be aligned with or located on the second extension line (VL2) with each first part (end or outer surface or corner part) of each of the plurality of first parts (221a1) of the second vibration generator (230). For example, each of the first parts (end or outer surface or each corner part) of each of the plurality of first parts (221a1) of the first vibration generator (210) may be precisely aligned with or positioned on the second extension line (VL2) without being misaligned with each of the first parts (end or outer surface or each corner part) of each of the plurality of first parts (221a1) of the second vibration generator (230).

[0255] According to the present specification, a plurality of second parts (221a2) of the first vibration generator (210) may substantially overlap or be superimposed with a plurality of second parts (221a2) of the second vibration generator (230) while having the same size as each other. For example, a plurality of second parts (221a2) of the first vibration generator (210) may substantially overlap or be superimposed without being misaligned with a plurality of second parts (221a2) of the second vibration generator (230) while having the same size as each other. According to the present specification, a first part (end or outer surface or each corner part) of each of the plurality of second parts (221a2) of the first vibration generator (210) may substantially overlap or be superimposed with a first part (end or outer surface or each corner part) of each of the plurality of second parts (221a2) of the second vibration generator (230). For example, each first part (end or outer surface or corner part) of each of the plurality of second parts (221a2) of the first vibration generator (210) may substantially overlap or be superimposed with each first part (end or outer surface or corner part) of each of the plurality of second parts (221a2) of the second vibration generator (230) without being misaligned. For example, each first part (end or outer surface or corner part) of each of the plurality of second parts (221a2) of the first vibration generator (210) may be aligned with or located on the second extension line (VL2) with each first part (end or outer surface or corner part) of each of the plurality of second parts (221a2) of the second vibration generator (230). For example, each of the first parts (end or outer surface or each corner part) of each of the plurality of second parts (221a2) of the first vibration generator (210) may be precisely aligned with or positioned on the second extension line (VL2) without being misaligned with each of the first parts (end or outer surface or each corner part) of each of the plurality of second parts (221a2) of the second vibration generator (230).Accordingly, the vibration device (200) according to the present specification can maximize or increase the amount of displacement or amplitude displacement as the vibration layer (221a) of the first vibration generator (210) and the vibration layer (221a) of the second vibration generator (230) are displaced in the same direction, thereby increasing (or maximizing) the amount of displacement (or bending force) or amplitude displacement of the display panel (100).

[0256] In FIG. 10 and the related description, a vibration device (200) according to another embodiment of the present specification is described as including first and second vibration generators (210, 230), but is not limited thereto. For example, a vibration device (200) according to another embodiment of the present specification may include a plurality (e.g., three or more) of vibration generators (210, 230). In this case as well, the plurality of vibration generators (210, 230) may overlap each other while having the same size so that the amount of displacement or amplitude displacement of the vibration device (200) is maximized or increased. According to the present specification, a first part (221a1) of a vibration generator (210) placed on the upper layer (or upper layer) among three or more vibration generators (210, 230) and a first part (221a1) of a vibration generator (230) placed on the lower layer (or lower layer) among three or more vibration generators (210, 230) may substantially overlap or be superimposed on each other. For example, a first part (221a1) of a vibration generator (210) placed on the upper layer among three or more vibration generators (210, 230) and a first part (221a1) of a vibration generator (230) placed on the lower layer among three or more vibration generators (210, 230) may substantially overlap or be superimposed on each other without being staggered. For example, among three or more vibration generators (210, 230), the first part (221a1) of the vibration generator (210) placed on the upper floor and the first part (221a1) of the vibration generator (230) placed on the lower floor may be aligned with or located on a virtual extension line (VL). For example, among three or more vibration generators (210, 230), the first part (221a1) of the vibration generator (210) placed on the upper floor and the first part (221a1) of the vibration generator (230) placed on the lower floor may be precisely aligned with or located on a virtual extension line (VL).And, the second part (221a2) of the vibration generator (210) placed on the upper layer among three or more vibration generators (210, 230) and the second part (221a2) of the vibration generator (230) placed on the lower layer among three or more vibration generators (210, 230) may substantially overlap or be superimposed on each other. For example, the second part (221a2) of the vibration generator (210) placed on the upper layer among three or more vibration generators (210, 230) and the second part (221a2) of the vibration generator (230) placed on the lower layer among three or more vibration generators (210, 230) may substantially overlap or be superimposed on each other without being misaligned. For example, among three or more vibration generators (210, 230), the second part (221a2) of the vibration generator (210) placed on the upper level and the second part (221a2) of the vibration generator (230) placed on the lower level may be aligned with or located on a virtual extension line (VL). For example, among three or more vibration generators (210, 230), the second part (221a2) of the vibration generator (210) placed on the upper level and the second part (221a2) of the vibration generator (230) placed on the lower level may be precisely aligned with or located on a virtual extension line (VL).

[0257] FIG. 11 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 12 is a cross-sectional view along line III-III' shown in FIG. 11.

[0258] Referring to FIGS. 11 and 12, in an apparatus according to another embodiment of the present specification, the rear (or back) surface of a display panel (100) may include a first area (or first rear area) (A1) and a second area (or second rear area) (A2). For example, on the rear surface of the display panel (100), the first area (A1) may be a left rear area and the second area (A2) may be a right rear area. The first area (A1) and the second area (A2) may be symmetrical with respect to the middle line (CL) of the display panel (100) with respect to the first direction (X), but are not limited thereto. For example, each of the first area (A1) and the second area (A2) may overlap with the display area of ​​the display panel (100).

[0259] A vibration device (200) according to another embodiment of the present specification may include a first vibration device (210-1) and a second vibration device (210-2) disposed on the rear surface of a display panel (100).

[0260] The first vibration device (210-1) may be placed in the first area (A1) of the display panel (100). For example, the first vibration device (210-1) may be placed so as to be offset toward the center or edge within the first area (A1) of the display panel (100) with respect to the first direction (X). The first vibration device (210-1) according to the present specification may generate a first vibration sound (PVS1) or generate a first haptic feedback in the first area (A1) of the display panel (100) by vibrating the first area (A1) of the display panel (100). For example, the first vibration device (210-1) according to the present specification may generate a first vibration sound (PVS1) or generate first haptic feedback in the first area (A1) of the display panel (100) by directly vibrating the first area (A1) of the display panel (100). For example, the first vibration sound (PVS1) may be a left sound. The size of the first vibration device (210-1) according to the present specification may have a size less than or equal to half the size of the first area (A1) or a size greater than or equal to half the size, depending on the characteristics of the first vibration sound (PVS1) or the acoustic characteristics required of the device. As another example, the size of the first vibration device (210-1) may have a size corresponding to the first area (A1) of the display panel (100). For example, the size of the first vibration device (210-1) may be the same as the first area (A1) of the display panel (100) or smaller than the first area (A1).

[0261] The second vibration device (210-2) may be placed in the second area (A2) of the display panel (100). For example, the second vibration device (210-2) may be placed so as to be offset toward the center or edge within the second area (A2) of the display panel (100) with respect to the first direction (X). The second vibration device (210-2) according to the present specification may generate a second vibration sound (PVS2) or generate second haptic feedback in the second area (A2) of the display panel (100) by directly vibrating the second area (A2) of the display panel (100). For example, the second vibration device (210-2) according to the present specification may generate a second vibration sound (PVS2) or generate second haptic feedback in the second area (A2) of the display panel (100) by directly vibrating the second area (A2) of the display panel (100). For example, the second vibration sound (PVS2) may be a left sound. The size of the second vibration device (210-2) according to the present specification may have a size less than or equal to half the size of the second area (A2) or a size greater than or equal to half the size, depending on the characteristics of the second vibration sound (PVS2) or the acoustic characteristics required of the device. As another example, the size of the second vibration device (210-2) may have a size corresponding to the second area (A2) of the display panel (100). For example, the size of the second vibration device (210-2) may be the same as the second area (A2) of the display panel (100) or smaller than the second area (A2). Accordingly, the first and second vibration devices (210-1, 210-2) may have the same size or different sizes depending on the left and right acoustic characteristics of the device and / or the acoustic characteristics of the device. Also, the first and second vibration devices (210-1, 210-2) may be arranged in a left-right symmetrical or left-right asymmetrical structure centered on the middle line (CL) of the display panel (100).

[0262] Each of the first vibration device (210-1) and the second vibration device (210-2) may include one or more of the vibration devices (200) described in FIGS. 2 to 5, so a redundant description thereof is omitted.

[0263] The connecting member (150) according to the present specification may be positioned between the first vibration device (210-1) and the second vibration device (210-2), respectively, and the rear surface of the display panel (100). For example, the first vibration device (210-1) and the second vibration device (210-2), respectively, may be positioned on the rear surface of the display panel (100) via the connecting member (150). Since the connecting member (150) is substantially the same as the connecting member (150) described in FIG. 2, a redundant description thereof is omitted.

[0264] The device according to the embodiment of the present specification may include a plurality of holes (301). For example, the plurality of holes (301) may overlap with each of the first vibration device (210-1) and the second vibration device (210-2). Since the description of the holes (301) is identical or similar to that described in FIG. 3, the description is omitted here.

[0265] Accordingly, the device according to another embodiment of the present specification can provide sound to the user by outputting left sound (PVS1) and right sound (PVS2) to the front of the display panel (100) through the first vibration device (210-1) and the second vibration device (210-2). In addition, by forming a hole (301) in the support member (300), the device can provide sound characteristics and / or sound pressure characteristics in the low frequency range that can be improved.

[0266] FIG. 13 is another cross-sectional view of line III-IIII' shown in FIG. 11. FIG. 13 shows the device shown in FIG. 12 with an additional plate configured. Accordingly, redundant descriptions of the remaining configurations, excluding the plate and related configurations, are omitted or brief below.

[0267] Referring to FIG. 13, a device according to another embodiment of the present specification includes a display panel (100) and a vibration device (200), and may further include a plate (170) disposed between the display panel (100) and the vibration device (200).

[0268] Since the display panel (100) and the vibration device (200) are substantially identical to the display panel (100) and the vibration device (200) described in FIGS. 2 to 5, the redundant description thereof is omitted or brief.

[0269] The plate (170) can be placed between the first vibration device (210-1) and the second vibration device (210-2) of the vibration device (200) and the rear surface of the display panel (100).

[0270] The plate (170) can dissipate heat generated from the display panel (100) or reinforce the mass of the first vibration device (210-1) and the second vibration device (210-2), which are placed on or suspended from the rear of the display panel (100). The plate (170) may have the same shape and size as the rear of the display panel (100) or the same shape and size as the vibration device (200). As another example, the plate (170) may have a different size from the display panel (100). For example, the plate (170) may be smaller than the size of the display panel (100). As another example, the plate (170) may have a different size from the vibration device (200). For example, the plate (170) may be larger or smaller than the size of the vibration device (200). The vibration device (200) may be the same size or smaller than the size of the display panel (100).

[0271] The plate (170) according to the present specification may be made of a metal material. For example, the plate (170) may be made of one or more of stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium lithium (Mg-Li) alloy, and aluminum (Al) alloy, but is not limited thereto.

[0272] A plate (170) according to the present specification may include a plurality of openings. The plurality of openings may be configured to have a constant size and a constant spacing. For example, the plurality of openings may be formed along a first direction (X) and a second direction (Y) to have a constant size and a constant spacing. Each of the plurality of openings may increase the sound pressure characteristics of the acoustics generated by the vibration of the display panel (100) by minimizing the loss of vibration caused by the plate (170) and concentrating the sound waves (or sound pressure) resulting from the vibration of the vibration device (200) onto the display panel (100) rather than dispersing them by the plate (170). For example, a plate (170) including a plurality of openings may have a mesh shape. For example, a plate (170) including a plurality of openings may be a mesh plate.

[0273] According to the present specification, the plate (170) may be connected to or coupled to the rear surface of the display panel (100). The plate (170) may dissipate heat generated from the display panel (100). For example, the plate (170) may be described as a heat dissipation member, a heat dissipation plate, or a heat sink, but is not limited to such terms.

[0274] According to the present specification, the plate (170) can reinforce the mass of the vibrating device (200) that is placed on or suspended from the rear of the display panel (100). By doing so, the plate (170) can reduce the resonance frequency of the vibrating device (200) as the mass of the vibrating device (200) increases. Accordingly, the plate (170) can increase the low-frequency acoustic characteristics and low-frequency sound pressure characteristics generated in conjunction with the vibration of the vibrating device (200), and improve the flatness of the acoustic characteristics. Here, the flatness of the acoustic characteristics may be the magnitude of the deviation between the highest sound pressure and the lowest sound pressure. For example, the plate (170) may be described as a weight member, a mass member, or an acoustic flattening member, but is not limited to such terms.

[0275] According to the present specification, the amount of displacement (or bending force) or amplitude displacement (or vibration amplitude) of the display panel (100) on which the plate (170) is placed may decrease as the thickness of the plate (170) increases due to the rigidity of the plate (170). As a result, the low-frequency characteristics and sound pressure characteristics of the sound generated according to the displacement (or vibration) of the display panel (100) may be degraded.

[0276] The plate (170) according to the present specification may be coupled to or connected to the rear surface of the display panel (100) via a connecting member (or a fourth connecting member) (190).

[0277] The connecting member (190) according to the present specification may include an adhesive layer having excellent adhesion or bonding strength to the rear surface of the display panel (100) and the vibration device (200), respectively. For example, the connecting member (190) may include a foam pad, double-sided tape, or an adhesive. For example, the adhesive layer of the connecting member (190) may include epoxy, acrylic, silicone, or urethane, but is not limited thereto. For example, the adhesive layer of the connecting member (190) may be the same as the adhesive layer of the connecting member (150), but is not limited thereto. For example, the adhesive layer of the connecting member (190) may include an acrylic-based material (or material) having characteristics of having relatively excellent adhesion strength and high hardness among acrylic and urethane so that the vibration of the vibration device (200) can be well transmitted to the display panel (100). As another example, the adhesive layer of the connecting member (190) can be configured differently from the adhesive layer of the connecting member (150).

[0278] The vibration device (200) can be supported or suspended from the rear surface of the plate (170) by being connected or coupled to the rear surface of the plate (170) via the aforementioned connecting member (150). Each of the first vibration device (210-1) and the second vibration device (210-2) of the vibration device (200) can be supported or suspended from the rear surface of the plate (170) by being connected or coupled to the rear surface of the plate (170) via the aforementioned connecting member (150).

[0279] The plate (170) according to the present specification may be integrated into the vibration device (200) or included in the configuration of the vibration device (200). For example, the plate (170) and the vibration device (200) may be composed of a single structure or a single component (or module) consisting of a single body. Accordingly, when the plate (170) is placed between the rear surface of the display panel (100) and the vibration device (200), the assembly process between the display panel (100) and the vibration device (200) may be facilitated due to the component unification (or modularization) between the plate (170) and the vibration device (200).

[0280] In another example, if the plate (170) and the vibration device (200) are composed of a single body, a single structure or a single part (or module), the non-display panel can be configured as a diaphragm. The plate (170) and the vibration device (200) can be placed on the non-display panel. The plate (170) and the vibration device (200) can be joined or connected via a connecting member (150). For example, the plate (170) may be wood, plastic, glass, fabric, interior materials of a car, a ceiling, and an aircraft, but is not limited thereto. Thus, the non-display panel can be vibrated to output sound. In another example, if the plate (170) and the vibration device (200) are composed of a single body, a single structure or a single part (or module), the plate (170) can be configured as a diaphragm. For example, the plate (170) may be made of one or more of stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy, but is not limited thereto. For example, in the module (or structure) of the plate (170) and the vibration device (200), the plate (170) may be made of one or more of a single nonmetallic or composite nonmetallic material, such as wood, plastic, glass, cloth, and leather, but is not limited thereto.

[0281] Accordingly, the device according to another embodiment of the present specification can provide sound to a user by outputting left sound (PVS1) and right sound (PVS2) to the front of the display panel (100) through the first vibration device (210-1) and the second vibration device (210-2). In addition, the resonance frequency of the vibration device (200) can be reduced by the plate (170), and heat from the display panel (100) can be dissipated.

[0282] FIG. 14 is another cross-sectional view of line III-III' shown in FIG. 11. FIG. 15 is another cross-sectional view of line III-III' shown in FIG. 11. FIG. 15 shows the device shown in FIG. 14 with an additional plate configured.

[0283] Referring to FIGS. 14 and 15, a vibration device (200) according to another embodiment of the present specification may include a first vibration device (220-1) and a second vibration device (220-2) disposed on the rear surface of a display panel (100). Each of the first vibration device (220-1) and the second vibration device (220-2) may include one or more of the vibration devices (200) described in FIGS. 6 through 10. Since the display panel (100) and the vibration device (200) are substantially identical to the display panel (100) and the vibration device (200) described in FIGS. 6 through 10, a redundant description thereof is omitted or brief. Since the description of the hole (301) is substantially identical to that described in FIG. 3, a description thereof is omitted or brief. Since the description of the plate (170) is substantially identical to that described in FIG. 13, a description thereof is omitted or brief.

[0284] The vibration device (200) according to the present specification has a plurality of vibration generators (210, 230) that overlap each other and have a first size, thereby minimizing the reduction in the amount of displacement of the display panel (100) according to the thickness of the plate (170). In addition, the vibration device (200) according to the present specification has a plurality of vibration generators (210, 230) that overlap each other and have a first size, thereby increasing or maximizing the amount of displacement of the display panel (100), so as to increase or improve the low-frequency characteristics and sound pressure characteristics of the sound generated according to the displacement of the display panel (100). Accordingly, in the device according to another embodiment of the present specification, the vibration device (200) can increase or maximize the amount of displacement of the display panel (100) on which the plate (170) is placed due to the stacked structure of the vibration generators (210, 230) that overlap each other. The plate (170) may have a thickness that allows it to smoothly dissipate heat from the display panel (100).

[0285] A plate (170) according to an embodiment of the present specification may be connected to or coupled to the front surface of a vibration device (200) via the aforementioned connecting member (150). For example, the plate (170) may be connected to or coupled to the uppermost vibration generator among a plurality of vibration generators (210, 230) of the vibration device (200) via the connecting member (150). For example, when the vibration device (200) has first and second vibration generators (210, 230), the plate (170) may be connected to or coupled to the first surface of the second vibration generator (230) or the second surface of the first vibration generator (210) via the connecting member (150).

[0286] Accordingly, the device according to another embodiment of the present specification can increase or improve the low-frequency acoustic characteristics and sound pressure characteristics generated according to the displacement of the display panel (100) due to the stacked structure of the vibration generators (210, 230) as described in FIGS. 7 to 10. In addition, the device according to another embodiment of the present specification can reduce the resonance frequency of the vibration device (200) by the plate (170) and dissipate heat from the display panel (100). Furthermore, by forming a hole (301) in the support member (300), the device can provide a device in which the low-frequency acoustic characteristics and / or sound pressure characteristics can be improved.

[0287] FIG. 16 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 16 is another cross-sectional view along line III-III' shown in FIG. 11. FIG. 16 shows the apparatus shown in FIG. 11 through 13 with additional partitions configured. Accordingly, redundant descriptions of the remaining configurations, excluding the partitions and related configurations, are omitted or simplified below. The description of the partitions may be applied in the same way to the apparatus of FIG. 14 and FIG. 15.

[0288] Referring to FIG. 16, a device according to another embodiment of the present specification may further include a partition disposed between the rear surface of a display panel (100) and a support member (300).

[0289] The partition according to the embodiment of the present specification may further include a first partition member (610) and a second partition member (620) disposed between a first vibration device (210-1) and a second vibration device (210-2).

[0290] According to the present specification, the third partition member (630) may be arranged to surround the entire first vibration device (210-1) and the second vibration device (210-2). The fourth partition member (640) (or the first enclosure) may surround the first vibration device (210-1). The fifth partition member (650) (or the second enclosure) may surround the second vibration device (210-2). A description of the partitions is given later in FIG. 17.

[0291] According to the present specification, a plurality of holes (301) may be disposed inside a partition member. For example, a plurality of holes (301) may be disposed inside one or more of the third partition member (630) and the fourth partition member (640). For example, a plurality of holes (301) may be disposed along the inner edge of one or more of the third partition member (630) and the fourth partition member (640). For example, a plurality of holes (301) may be disposed inside one or more of the third partition member (630) and the fifth partition member (650). For example, a plurality of holes (301) may be disposed along the inner edge of one or more of the third partition member (630) and the fifth partition member (650). For example, a plurality of holes (301) may include a fourth partition member (640) (first enclosure) surrounding a first vibration device (210-1) and a fifth partition member (650) (second enclosure) surrounding a second vibration device (210-2), and the plurality of holes (301) may be disposed inside each of the fourth partition member (640) and the fifth partition member (650).

[0292] For example, the fourth partition member (640) and the fifth partition member (650) may be placed between the rear surface of the display panel (100) and the first support member (310). The first support member (310) can facilitate the adhesion of the fourth partition member (640) and the fifth partition member (650) placed on the display panel (100). As another example, the first support member (310) may be omitted.

[0293] For example, the first partition member (610) may be placed between the first vibration device (210-1) and the second vibration device (210-2). For example, the second partition member (620) may be placed between the first vibration device (210-1) and the second vibration device (210-2). The first partition member (610) and the second partition member (620) may be placed between the rear surface of the display panel (100) and the first support member (310). The first support member (310) may facilitate the adhesion of the first partition member (610) and the second partition member (620) placed on the display panel (100). As another example, the first support member (310) may be omitted.

[0294] FIG. 17 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 17 additionally configures a partition in the apparatus shown in FIG. 2 through 5, FIG. 7, and FIG. 11 through 13. Accordingly, redundant descriptions of the remaining configurations, excluding the partition and related configurations, are omitted or simplified below. The description of the partition may be applied in the same way to the apparatus of FIG. 8 through 10, FIG. 14, and FIG. 15.

[0295] Referring to FIGS. 11, 12, 13, and 17, an apparatus according to another embodiment of the present specification may further include a partition (600) that divides a first area (A1) and a second area (A2) of a display panel (100).

[0296] The partition (600) may be an air gap or space where sound (PVS1, PVS2) is generated when the display panel (100) vibrates by the first vibration device (210-1) and the second vibration device (210-2). For example, the partition (600) may separate the sound (PVS1, PVS2) or separate channels, and may prevent or reduce the degradation of the characteristics of the sound (PVS1, PVS2) caused by interference of the sound (PVS1, PVS2). The partition (600) may be expressed as a sound blocking member, a sound separation member, a space separation member, an enclosure, or a baffle, but is not limited thereto.

[0297] The partition (600) according to the embodiment of the present specification may further include a first partition member (610) and a second partition member (620) disposed between a first vibration device (210-1) and a second vibration device (210-2).

[0298] The first partition member (610) and the second partition member (620) may be positioned between the display panel (100) and the support member (300). For example, the first partition member (610) and the second partition member (620) may be positioned between the display panel (100) and the second support member (330). For example, the first partition member (610) and the second partition member (620) may be positioned between the display panel (100) and the support member (300) corresponding to an intermediate area of ​​the display panel (100). The first partition member (610) and the second partition member (620) can separate the first vibration sound (PVS1) generated by the first vibration device (210-1) and the second vibration sound (PVS2) generated by the second vibration device (210-2). For example, the first partition member (610) and the second partition member (620) can block vibrations generated in the first area (A1) of the display panel (100) by the first vibration device (210-1) from being transmitted to the second area (A2) of the display panel (100), or vibrations generated in the second area (A2) of the display panel (100) by the second vibration device (210-2) from being transmitted to the first area (A1) of the display panel (100). Accordingly, the first partition member (610) and the second partition member (620) can block sound from the first area (A1) from being transmitted to the second area (A2) or sound from the second area (A2) from being transmitted to the first area (A1) by attenuating or absorbing vibrations of the display panel (100) at the center of the display panel (100). Accordingly, the first partition member (610) and the second partition member (620) can further improve the sound output characteristics of the device by separating left and right sounds. Accordingly, the device according to the embodiment of the present specification can output sound including 2-channel sound to the front of the display panel (100) by separating left and right sounds according to the first partition member (610) and the second partition member (620).

[0299] For example, the partition (600) may be composed of a material having elasticity that allows it to be compressed to a certain degree. For example, the partition (600) may be composed of polyurethane or polyolefin material, but is not limited thereto. As another example, the partition (600) may be composed of single-sided tape, single-sided foam tape, double-sided tape, or double-sided foam tape.

[0300] For example, either the first partition member (610) or the second partition member (620) may be omitted. Even in this case, the left and right sounds can be separated as either the first partition member (610) or the second partition member (620) is positioned between the first vibration device (210-1) and the second vibration device (210-2). For example, when the second partition member (620) among the first partition member (610) and the second partition member (620) is omitted, the first partition member (610) corresponds to the rear middle line (CL) of the display panel (100) and may be positioned between the display panel (100) and the support member (300).

[0301] Accordingly, the sound output characteristics of the device can be further improved by separating left and right sounds by the first partition member (610) and the second partition member (620), and the device including the first partition member (610) or the second partition member (620) can output sound including 2-channel sound to the front of the display panel (100) by separating left and right sounds according to the first partition member (610) or the second partition member (620).

[0302] The partition (600) according to the embodiment of the present specification may further include a third partition member (630) disposed between the display panel (100) and the support member (300).

[0303] The third partition member (630) may be positioned to surround the entire first vibration device (210-1) and the second vibration device (210-2). For example, the third partition member (630) may be positioned along the space between the rear edge of the display panel (100) and the front edge of the support member (300). The third partition member (630) may be described as an edge partition, a sound blocking member, an edge enclosure, or an edge baffle, but is not limited thereto. For example, the third partition member (630) may be positioned adjacent to or in contact with the first connecting member (401) shown in FIGS. 12 to 16, and may be surrounded by the first connecting member (401). As another example, the third partition member (630) may be implemented as a single body with the first connecting member (401).

[0304] The third partition member (630) can provide first to third air gaps (AG1, AG2, AG3) between the display panel (100) and the support member (300) together with the first partition member (610) and the second partition member (620). For example, each of the first to third air gaps (AG1, AG2, AG3) may be described as a vibration space, a sound pressure space, a resonance chamber, a resonance part, a resonance chamber, or a resonance part, but is not limited thereto.

[0305] The first air gap (AG1) may be provided in the first area (A1) of the display panel (100). For example, the first air gap (AG1) may be provided in the first area (A1) of the display panel (100) surrounded by the first partition member (610) and the third partition member (630) disposed in the first area (A1) of the display panel (100).

[0306] The second air gap (AG2) may be provided in the second area (A2) of the display panel (100). For example, the second air gap (AG2) may be provided in the second area (A2) of the display panel (100) surrounded by the second partition member (620) and the third partition member (630) disposed in the second area (A2) of the display panel (100).

[0307] A third air gap (AG3) may be provided in the rear middle area of ​​the display panel (100). For example, the third air gap (AG3) may be provided in the rear middle area of ​​the display panel (100) surrounded by the first and second partition members (610, 620) and the third partition member (630). For example, the third air gap (AG3) may be provided between the first air gap (AG1) and the second air gap (AG2), which include the rear middle line (CL) of the display panel (100). The third air gap (AG3) may be described as a sound separation space, a sound shielding space, or a sound interference prevention space, but is not limited thereto. The third air gap (AG2) can prevent resonance or interference phenomena in a certain frequency band occurring in each of the first air gap (AG1) and the second air gap (AG2) by separating the first air gap (AG1) and the second air gap (AG2).

[0308] The first vibration device (210-1) may be surrounded by the first partition member (610) and the third partition member (630) which provides the first air gap (AG1). The second vibration device (210-2) may be surrounded by the first partition member (610) and the third partition member (630) which provides the second air gap (AG2).

[0309] If either the first partition member (610) or the second partition member (620) is omitted, the third air gap (AG3) may be omitted.

[0310] Accordingly, the third partition member (630) surrounds the space between the display panel (100) and the support member (300), and by individually surrounding the first vibration device (210-1) and the second vibration device (210-2) together with the first partition member (610) and the second partition member (620), vibration spaces for each of the first vibration device (210-1) and the second vibration device (210-2) can be secured, thereby increasing the sound pressure characteristics of the left and right sounds. In addition, the third partition member (630) can block the external leakage of sound or sound pressure through the side between the display panel (100) and the support member (300), and thereby further improve the sound output characteristics of the device.

[0311] The partition (600) according to the embodiment of the present specification may further include a fourth partition member (640) and a fifth partition member (650). The fourth partition member (640) (or the first enclosure) may surround the first vibration device (210-1). The fifth partition member (650) (or the second enclosure) may surround the second vibration device (210-2).

[0312] The fourth partition member (640) may be positioned between the display panel (100) and the support member (300) to correspond to the first air gap (AG1). For example, the fourth partition member (640) may independently surround the first vibration device (210-1). The fourth partition member (640) according to the embodiment of the present specification may have a square shape surrounding the first vibration device (210-1), but is not limited thereto. For example, the fourth partition member (640) may have a shape that is the same as or different from the shape of the first vibration device (210-1). For example, if the first vibration device (210-1) has a square shape, the fourth partition member (640) may have a square shape that is relatively larger than the first vibration device (210-1), or may have a circular shape or an elliptical shape.

[0313] The fourth partition member (640) can limit (or define) the vibration area (or vibration area) of the display panel (100) by the first vibration device (210-1). For example, in the first area (A1) of the display panel (100), as the size of the fourth partition member (640) increases, the vibration area of ​​the first area (A1) increases, and the low-frequency characteristics of the left sound can be improved. As another example, in the first area (A1) of the display panel (100), as the size of the fourth partition member (640) decreases, the vibration area of ​​the first area (A1) decreases, and the high-frequency characteristics of the left sound can be improved. Accordingly, the size of the fourth partition member (640) can be set according to the characteristics of the required frequency range based on the vibration of the display panel (100) caused by the vibration of the first vibration device (210-1).

[0314] The fifth partition member (650) may be positioned between the display panel (100) and the support member (300) to correspond to the second air gap (AG2). For example, the fifth partition member (650) may independently surround the second vibration device (210-2). The fifth partition member (650) according to the embodiment of the present specification may have the same shape as the fourth partition member (640) for symmetry between the left sound and the right sound, and may have a symmetrical structure with respect to the fourth partition member (640) with respect to the rear middle line (CL) of the display panel (100).

[0315] The fifth partition member (650) can limit (or define) the vibration area (or vibration area) of the display panel (100) by the second vibration device (210-2). For example, in the second area (A2) of the display panel (100), as the size of the fifth partition member (650) increases, the vibration area of ​​the second area (A2) increases, and the low-frequency characteristics of the left sound can be improved. As another example, in the second area (A2) of the display panel (100), as the size of the fifth partition member (650) decreases, the vibration area of ​​the second area (A2) decreases, and the high-frequency characteristics of the left sound can be improved. Accordingly, the size of the fifth partition member (650) can be set according to the characteristics of the required frequency range based on the vibration of the display panel (100) caused by the vibration of the second vibration device (210-2).

[0316] The fourth partition member (640) and the fifth partition member (650) can improve the left-right symmetry of the left and right sounds generated by the vibration of the display panel (100) by limiting the vibration area (or vibration area) of the vibration device (210-1, 210-2), and optimize the sound pressure characteristics and playback frequency bands of the left and right sounds, respectively. For example, when the fourth partition member (640) and the fifth partition member (650) are arranged, the third partition member (630) may be omitted. As another example, when the fourth partition member (640) and the fifth partition member (650) are arranged, one or more of the first partition member (610), the second partition member (620), and the third partition member (630) may be omitted.

[0317] Accordingly, the device according to another embodiment of the present specification may optimize the sound pressure characteristics and playback frequency bands of the left and right acoustics, respectively, by including a partition (600). For example, the device according to an embodiment of the present specification may include at least one of a first partition member (610) and a second partition member (620). For example, the device according to an embodiment of the present specification may include at least one of a first partition member (610) and a second partition member (620) and a third partition member (630). For example, the device according to an embodiment of the present specification may include third to fifth partition members (630, 640, 650). For example, the device according to an embodiment of the present specification may include all of the first to fifth partition members (610, 620, 630, 640, 650).

[0318] Accordingly, the device according to another embodiment of the present specification can provide sound to a user by outputting left sound (PVS1) and right sound (PVS2) to the front of the display panel (100) through the first vibration device (210-1) and the second vibration device (210-2). The device according to another embodiment of the present specification can output sound including 2-channel sound to the front of the display panel (100) by separating left and right sounds (PVS1, PVS2) according to the partition (600). In addition, the device according to another embodiment of the present specification can improve the flatness of the sound characteristics due to the reduction of the resonance frequency by the plate implemented in each of the first vibration device (210-1) and the second vibration device (210-2).

[0319] FIGS. 18a and FIGS. 18b are drawings illustrating an apparatus according to another embodiment of the present specification.

[0320] Referring to FIGS. 18a and 18b, a vibration device according to another embodiment of the present specification may include a first vibration device (210-1), a second vibration device (210-2), a third vibration device (210-3), and a fourth vibration device (210-4) disposed on the rear surface of a display panel (100). FIGS. 18a and 18b describe the device of FIGS. 12 and 13 as an example, but are not limited thereto. For example, the description of FIGS. 18a and 18b may also apply to FIGS. 2 through 5, FIGS. 7 through 11, and FIGS. 14 through 16.

[0321] Referring to FIG. 18a, the first vibration device (210-1) and the third vibration device (210-3) may each be placed in a first area (A1) of the display panel (100). For example, the first vibration device (210-1) and the third vibration device (210-3) may each be placed in an alternating or diagonal direction within the first area (A1) of the display panel (100). By doing so, the vibration area for the first area (A1) of the display panel (100) can be increased. For example, the diagonal direction may be a direction between the first direction (X) and the second direction (Y).

[0322] The first vibration device (210-1) and the third vibration device (210-3) may be enclosed by a partition (600). For example, the first vibration device (210-1) and the third vibration device (210-3) may be enclosed by a fourth partition member (640) (or a first enclosure).

[0323] Each of the first vibration device (210-1) and the third vibration device (210-3) can generate a first vibration sound (or left sound) or generate first haptic feedback in the first area (A1) of the display panel (100) by vibrating the first area (A1) of the display panel (100). For example, the vibration area of ​​the first area (A1) of the display panel (100) increases according to the parallel arrangement structure of the first vibration device (210-1) and the third vibration device (210-3), and as a result, acoustic characteristics including the low frequency range of the left sound can be improved. For example, as a third vibration device (210-3) is further disposed in the first area (A1) of the display panel (100) in addition to the first vibration device (210-1), the first vibration acoustic or first haptic feedback according to another embodiment of the present specification may be improved more than the first vibration acoustic or first haptic feedback described in FIG. 17.

[0324] According to the present specification, the first vibration device (210-1) may be positioned so as to be offset toward the edge in the first area (A1) of the display panel (100). For example, the first vibration device (210-1) may be positioned in the upper-left area adjacent to the edge of the display panel (100) in the first area (A1) of the display panel (100). The third vibration device (210-3) may be positioned so as to be offset toward the middle line (CL) of the display panel (100) within the first area (A1) of the display panel (100). For example, the third vibration device (210-3) may be positioned in the lower-right area adjacent to the middle line (CL) of the display panel (100) in the first area (A1) of the display panel (100). The third vibration device (210-3) is positioned diagonally with respect to the first vibration device (210-1) in the first area (A1) of the display panel (100), so that it does not overlap with the first vibration device (210-1) in the first direction (X) and the second direction (Y). According to the present specification, the diagonal arrangement structure of the first vibration device (210-1) and the third vibration device (210-3) has the effect of arranging two vibration devices (210-1, 210-3) in a 2x2 structure in the first area (A1) of the display panel (100), so the number of vibration devices vibrating the first area (A1) of the display panel (100) can be reduced by half.

[0325] Each of the second vibration device (210-2) and the fourth vibration device (210-4) may be placed in the second area (A2) of the display panel (100). For example, each of the second vibration device (210-2) and the fourth vibration device (210-4) may be placed in an alternating or diagonal direction in the second area (A2) of the display panel (100). By doing so, the vibration area for the second area (A2) of the display panel (100) can be increased. For example, the diagonal direction may be a direction between the first direction (X) and the second direction (Y).

[0326] The second vibration device (210-2) and the fourth vibration device (210-4) may be enclosed by a partition (600). For example, the second vibration device (210-2) and the fourth vibration device (210-4) may be enclosed by a fifth partition member (650) (or a second enclosure).

[0327] Each of the second vibration device (210-2) and the fourth vibration device (210-4) can generate a second vibration sound (or right sound) or generate second haptic feedback in the second area (A2) of the display panel (100) by vibrating the second area (A2) of the display panel (100). For example, the vibration area of ​​the second area (A2) of the display panel (100) increases according to the diagonal arrangement structure of the second vibration device (210-2) and the fourth vibration device (210-4), thereby improving acoustic characteristics including low-frequency characteristics of the right sound. For example, as a fourth vibration device (210-4) is further disposed in the second area (A2) of the display panel (100) in addition to the second vibration device (210-2), the second vibration acoustic or second haptic feedback according to another embodiment of the present specification may be enhanced compared to the second vibration acoustic or second haptic feedback described in FIG. 17.

[0328] According to the present specification, the second vibration device (210-2) may be positioned so as to be offset toward the edge in the second area (A2) of the display panel (100). For example, the second vibration device (210-2) may be positioned in the upper right area adjacent to the edge of the display panel (100) in the second area (A2) of the display panel (100). Also, the first vibration device (210-1) and the second vibration device (210-2) may be symmetrical left and right with respect to the middle line (CL) of the display panel (100). The fourth vibration device (210-4) may be positioned so as to be offset toward the middle line (CL) of the display panel (100) in the second area (A2) of the display panel (100). For example, the fourth vibration device (210-4) may be placed in the lower left area adjacent to the middle line (CL) of the display panel (100) in the second area (A2) of the display panel (100). The fourth vibration device (210-4) may not overlap with the second vibration device (210-2) in the first direction (X) and the second direction (Y) by being placed staggered with the second vibration device (210-2) in the second area (A2) of the display panel (100). According to the present specification, the diagonal arrangement structure of the second vibration device (210-2) and the fourth vibration device (210-4) has the effect of arranging two vibration devices (210-2, 210-4) in a 2x2 structure in the second area (A2) of the display panel (100), so the number of vibration devices vibrating the second area (A2) of the display panel (100) can be reduced by half.

[0329] The vibration layers of each of the plurality of vibration modules included in each of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) may be identical or different from each other. For example, depending on the acoustic characteristics required of the device, the vibration layer of each of the plurality of vibration modules included in each of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) may include a vibration part (211, 221) identical to one or more of the vibration parts (211, 221) described in FIGS. 2 to 10, or may include different vibration parts (211, 221). When the vibration layer of each vibration part (211, 221) of each of the plurality of vibration modules included in each of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) includes different vibration parts (211, 221) among the vibration parts (211, 221) described in FIGS. 2 to 10, the vibration device (200) may have various resonance frequencies, and as a result, the sound reproduction band and sound pressure characteristics of the sound generated in conjunction with the vibration of the vibration device (200) may be greatly increased.

[0330] The arrangement structure of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) is not limited to the arrangement structure shown in FIG. 22a. For example, in each of the first area (A1) and the second area (A2) of the display panel (100), when the direction between the upper left and lower right sides is called the first diagonal direction and the direction between the upper right and lower left sides is called the second diagonal direction, the first vibration device (210-1) and the third vibration device (210-3) may be arranged along the first diagonal direction or the second diagonal direction, and the second vibration device (210-2) and the fourth vibration device (210-4) may be arranged along a diagonal direction that is the same as or different from the diagonal arrangement direction of the first vibration device (210-1) and the third vibration device (210-3) among the first diagonal direction and the second diagonal direction. For example, the first vibration device (210-1) and the second vibration device (210-2) may be arranged in a left-right symmetrical structure or a left-right asymmetrical structure with respect to the middle line (CL) of the display panel (100). Additionally, the third vibration device (210-3) and the fourth vibration device (210-4) may be arranged in a left-right symmetrical structure or a left-right asymmetrical structure with respect to the middle line (CL) of the display panel (100).

[0331] Accordingly, the device according to another embodiment of the present specification can provide sound to a user, output sound of two or more channels to the front of the display panel (100), reduce the resonance frequency of the vibration device (200), and dissipate heat from the display panel (100). Additionally, the device according to another embodiment of the present specification can further improve the sound pressure characteristics in the low frequency range as the vibration area of ​​each of the first region (A1) and the second region (A2) increases according to the diagonal arrangement structure of the first vibration device (210-1) and the third vibration device (210-3) and the diagonal arrangement structure of the second vibration device (210-2) and the fourth vibration device (210-4).

[0332] Referring to FIG. 18b, the first vibration device (210-1) and the third vibration device (210-3) may each be placed in a first area (A1) of the display panel (100). For example, the first vibration device (210-1) and the third vibration device (210-3) may each be placed side by side along the first direction (X) (or horizontal direction) in the first area (A1) of the display panel (100). For example, the first vibration device (210-1) and the third vibration device (210-3) may each be placed in a line along the second direction (Y) (or vertical direction) in the first area (A1) of the display panel (100).

[0333] The first vibration device (210-1) and the third vibration device (210-3) may be enclosed by a partition (600). For example, the first vibration device (210-1) and the third vibration device (210-3) may be enclosed by a fourth partition member (640) (or a first enclosure).

[0334] Each of the first vibration device (210-1) and the third vibration device (210-3) can generate a first vibration sound (or left sound) or generate first haptic feedback in the first area (A1) of the display panel (100) by vibrating the first area (A1) of the display panel (100). For example, the vibration area of ​​the first area (A1) of the display panel (100) increases according to the parallel arrangement structure of the first vibration device (210-1) and the third vibration device (210-3), and thereby the acoustic characteristics including the low frequency range of the left sound can be improved. For example, as a third vibration device (210-3) is further disposed in the first area (A1) of the display panel (100) in addition to the first vibration device (210-1), the first vibration acoustic or first haptic feedback according to another embodiment of the present specification may be improved more than the first vibration acoustic or first haptic feedback described in FIG. 17.

[0335] According to the present specification, based on the center line of the first area (A1) of the display panel (100) parallel to the first direction (X), the first vibration device (210-1) may be positioned above the center line, and the third vibration device (210-3) may be positioned below the center line. The first vibration device (210-1) and the third vibration device (210-3) may be symmetrical to each other (or vertically symmetrical) with respect to the center line. The vibration area of ​​the first area (A1) of the display panel (100) may be increased according to the parallel arrangement structure of the first vibration device (210-1) and the third vibration device (210-3), thereby improving acoustic characteristics including low-frequency characteristics of the left acoustic.

[0336] According to the present specification, with respect to the second direction (Y), the gap (or separation distance) between the first vibration device (210-1) and the third vibration device (210-3) may be 0.1 mm or more and less than 3 cm, but is not limited thereto. By doing so, the occurrence of cracks or damage caused by physical contact between the first vibration device (210-1) and the third vibration device (210-3) can be prevented.

[0337] Each of the second vibration device (210-2) and the fourth vibration device (210-4) may be placed in a second area (A2) of the display panel (100). For example, each of the second vibration device (210-2) and the fourth vibration device (210-4) may be placed side by side along the first direction (X) (or horizontal direction) in the second area (A2) of the display panel (100). For example, each of the second vibration device (210-2) and the fourth vibration device (210-4) may be placed in a line along the second direction (Y) (or vertical direction) in the second area (A2) of the display panel (100).

[0338] The second vibration device (210-2) and the fourth vibration device (210-4) may be enclosed by a partition (600). For example, the second vibration device (210-2) and the fourth vibration device (210-4) may be enclosed by a fifth partition member (650) (or a second enclosure).

[0339] Each of the second vibration device (210-2) and the fourth vibration device (210-4) can generate a second vibration sound (or right sound) or generate second haptic feedback in the second area (A2) of the display panel (100) by vibrating the second area (A2) of the display panel (100). For example, the vibration area of ​​the second area (A2) of the display panel (100) increases according to the parallel arrangement structure of the second vibration device (210-2) and the fourth vibration device (210-4), and thereby, acoustic characteristics including the low-frequency characteristics of the right sound can be improved. For example, as a fourth vibration device (210-4) is further disposed in the second area (A2) of the display panel (100) in addition to the second vibration device (210-2), the second vibration acoustic or second haptic feedback according to another embodiment of the present specification may be enhanced compared to the second vibration acoustic or second haptic feedback described in FIG. 17.

[0340] According to the present specification, based on the center line of the second region (A2) of the display panel (100) parallel to the first direction (X), the second vibration device (210-2) may be positioned above the center line, and the fourth vibration device (210-4) may be positioned below the center line. The second vibration device (210-2) and the fourth vibration device (210-4) may be symmetrical to each other (or vertically symmetrical) with respect to the center line. The vibration area of ​​the second region (A2) of the display panel (100) may be increased according to the parallel arrangement structure of the second vibration device (210-2) and the fourth vibration device (210-4), thereby improving acoustic characteristics including low-frequency characteristics of the right-side sound.

[0341] According to the present specification, with respect to the second direction (Y), the gap (or separation distance) between the second vibration device (210-2) and the fourth vibration device (210-4) may be 0.1 mm or more and less than 3 cm, but is not limited thereto. By doing so, the occurrence of cracks or damage caused by physical contact between the second vibration device (210-2) and the fourth vibration device (210-4) can be prevented.

[0342] The vibration layers of each of the plurality of vibration modules included in each of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) may be identical or different from each other. For example, depending on the acoustic characteristics required of the device, the vibration layer of each of the plurality of vibration modules included in each of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) may include a vibration part (211, 221) identical to one or more of the vibration parts (211, 221) described in FIGS. 2 to 10, or may include different vibration parts (211, 221). When the vibration layer of each vibration part (211, 221) of each of the plurality of vibration modules included in each of the first to fourth vibration devices (210-1, 210-2, 210-3, 210-4) includes different vibration parts (211, 221) among the vibration parts (211, 221) described in FIGS. 2 to 10, the vibration device (200) may have various resonance frequencies, and thereby the sound reproduction band and sound pressure characteristics of the sound generated in conjunction with the vibration of the vibration device (200) may be greatly increased.

[0343] According to the present specification, in FIG. 18b, the first vibration device (210-1) and the third vibration device (210-3) are described as being arranged side by side along the first direction (X) (or horizontal direction) or arranged in a line along the second direction (Y) (or vertical direction), but are not limited thereto. For example, the first vibration device (210-1) and the third vibration device (210-3) may be configured in a parallel arrangement structure in which they are arranged side by side along the second direction (Y) (or vertical direction) or arranged in a line along the first direction (X) (or horizontal direction), and in this case, they may have the same effect as FIG. 22a. In addition, the second vibration device (210-2) and the fourth vibration device (210-4) may also be configured in a parallel arrangement structure, arranged side by side along the second direction (Y) (or vertical direction) or arranged in a line along the first direction (X) (or horizontal direction), and in this case, they may have the same effect as FIG. 18a.

[0344] When the first vibration device (210-1) and the second vibration device (210-2) include a plurality of vibration modules, the sound pressure may be reduced at a specific frequency. For example, the sound pressure in the mid-range may be reduced. Since resonance or inverse resonance occurs at the boundary between the plurality of vibration modules, the sound pressure may be reduced. For example, the sound pressure may be reduced as resonance or inverse resonance occurs in the central part between the plurality of vibration modules. A vibration device according to another embodiment of the present specification may place a pad member at the boundary of the plurality of vibration modules to improve the deterioration of sound quality or dip phenomenon occurring in the boundary region between the plurality of vibration modules. For example, the pad member may suppress or reduce the resonance frequency at the boundary of the plurality of vibration modules. The pad member may be configured to reduce the sound pressure reduction occurring between the plurality of vibration modules.

[0345] Referring to FIGS. 18a and 18b, a pad member may be disposed between two or more vibration modules. A first pad member (701) may be disposed between multiple vibration modules of a first vibration device (210-1). For example, the first pad member (701) may be disposed between multiple vibration modules of a third vibration device (210-3). For example, the space between multiple vibration modules may overlap with the first pad member (701). A second pad member (702) may be disposed between multiple vibration modules of a second vibration device (210-2). For example, the second pad member (702) may be disposed between multiple vibration modules of a fourth vibration device (210-4). For example, the space between multiple vibration modules may overlap with the second pad member (702). The first pad member (701) and the second pad member (702) may be a resonance control pad, an external resonance pad, a gap pad, or a resonance control part, and are not limited to the terms.

[0346] The first pad member (701) may be disposed between the first vibration device (210-1) and the support member (300). The first pad member (701) may be disposed between the third vibration device (210-3) and the support member (300). For example, the first pad member (701) may have a "+" shape that overlaps between a plurality of vibration modules of the first vibration device (210-1) and the third vibration device (210-3). The second pad member (702) may be disposed between the second vibration device (210-2) and the support member (300). The second pad member (702) may be disposed between the fourth vibration device (210-4) and the support member (300). For example, the second pad member (702) may have a "+" shape that overlaps between the plurality of vibration modules of the second vibration device (210-2) and the fourth vibration device (210-4).

[0347] The first pad member (701) and the second pad member (702) may be disposed between the support member (300) and the vibration device (200). For example, the first pad member (701) may be disposed in a plurality of vibration modules of the first vibration device (210-1). The first pad member (701) may be disposed in a plurality of vibration modules of the third vibration device (210-3). The second pad member (702) may be disposed in a plurality of vibration modules of the second vibration device (210-2). The second pad member (702) may be disposed in a plurality of vibration modules of the fourth vibration device (210-4).

[0348] As another example, the first pad member (701) and the second pad member (702) may be placed on the rear of a plurality of vibration generators (210, 230). For example, the first pad member (701) and the second pad member (702) may be placed below the second vibration generator (230) among the plurality of vibration generators (210, 230).

[0349] The first pad member (701) and the second pad member (702) may be composed of a material capable of absorbing or controlling vibration. For example, the first pad member (701) and the second pad member (702) may be composed of one of a silicone-based polymer, paraffin wax, and an acrylic-based polymer, but are not limited thereto. For example, the first pad member (701) and the second pad member (702) may be composed of a material different from that of the partition (600), but are not limited thereto.

[0350] For another example, one or more of the first pad member (701) and the second pad member (702) may be configured to be identical to the vibration device (200). For example, one or more of the first pad member (701) and the second pad member (702) may be configured to be identical to the vibration part (211, 221).

[0351] As another example, the pad member can be applied to the device illustrated in FIGS. 3 and FIGS. 7. Referring to FIGS. 3 and FIGS. 7, the pad member may be positioned between the vibration device (200) and the support member (300). For example, the pad member may be positioned between the vibration device (200) and the second support member (330). For example, the pad member may be positioned between the rear surface of the vibration device (200) and the second support member (330). For example, the pad member may overlap with the support member (300). For example, the pad member may overlap with the second support member (330). For example, the pad member may be positioned in a portion without a hole (301). The pad member may be a transmission member or a vibration transmission member that transmits sound or vibration of the vibration device (200) to the front surface of the device. By configuring a pad member between the vibration device (200) and the support member (300), the sound or vibration of the vibration device can be transmitted to the front of the device, thereby providing a device with improved acoustic characteristics and / or sound pressure characteristics.

[0352] As another example, the first pad member (701) and the second pad member (702) may be composed of a single pad member. For example, the pad member may be composed as one on the rear surface of the first vibration device (210-1) and the second vibration device (210-2). Referring to FIGS. 8 and 9, the pad member may be placed on the rear surface of the third vibration module (210C) and the fourth vibration module (210D) of the second vibration generator (230). For example, the pad member may be placed on the rear surface of the third vibration module (210C) and the fourth vibration module (210D) of the second vibration generator (230), for example, between the third vibration module (210C) and the fourth vibration module (210D). For example, the pad member may be placed over the entire rear surface of the third vibration module (210C) and the fourth vibration module (210D) of the second vibration generator (230).

[0353] Each of the plurality of vibration modules included in the first vibration device (210-1), the second vibration device (210-2), the third vibration device (210-3), and the fourth vibration device (210-4) may include a first part and a second part of the vibration section (211, 221). Referring to FIG. 18a, the arrangement direction of the first part of the vibration section (211, 221) and the arrangement direction of the second part may be arranged in the same way, but are not limited thereto. For example, the arrangement direction of the first part of the vibration section (211, 221) and the arrangement direction of the second part may be the same as the vertical direction of the display panel (100). For example, the arrangement direction of the first part of the vibration section (211, 221) and the arrangement direction of the second part may be the same as the second direction (Y direction) of the display panel (100). For example, the arrangement direction of the first part of the vibration section of the first vibration device (210-1) and the arrangement direction of the second part may be configured to be the same as the vertical direction of the display panel (100), and the arrangement direction of the first part of the vibration section of the third vibration device (210-3) and the arrangement direction of the second part may be configured to be the same as the horizontal direction of the display panel (100), or they may be configured in the opposite way. For example, the arrangement direction of the first part of the vibration section of the second vibration device (210-2) and the arrangement direction of the second part may be configured to be the same as the vertical direction of the display panel (100), and the arrangement direction of the first part of the vibration section of the fourth vibration device (210-4) and the arrangement direction of the second part may be configured to be the same as the horizontal direction of the display panel (100), or they may be configured in the opposite way.

[0354] As another example, the arrangement direction of the first part and the arrangement direction of the second part of the vibrating section of the first vibrating device (210-1) may be configured to be the same as the vertical direction of the display panel (100), and the arrangement direction of the first part and the arrangement direction of the second part of the vibrating section of the second vibrating device (210-2) may be configured to be the same as the horizontal direction of the display panel (100), or it may be configured in the opposite way. For example, the arrangement direction of the first part and the arrangement direction of the second part of the vibrating section of the third vibrating device (210-3) may be configured to be the same as the vertical direction of the display panel (100), and the arrangement direction of the first part and the arrangement direction of the second part of the vibrating section of the fourth vibrating device (210-4) may be configured to be the same as the horizontal direction of the display panel (100), or it may be configured in the opposite way.

[0355] For example, the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the first vibrating device (210-1) and the second vibrating device (210-2) may be symmetric to the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the third vibrating device (210-3) and the fourth vibrating device (210-4). As another example, the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the first vibrating device (210-1) and the second vibrating device (210-2) may be asymmetric to the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the third vibrating device (210-3) and the fourth vibrating device (210-4). For example, the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the first vibrating device (210-1) may be different from the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the third vibrating device (210-3). For example, the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the second vibrating device (210-2) may be different from the arrangement direction of the first part and the arrangement direction of the second part of the vibrating part included in the fourth vibrating device (210-4).

[0356] For example, the arrangement direction of the first part and the arrangement direction of the second part of the vibration modules included in the vibration device may be the same as the horizontal direction of the display panel, the same as the vertical direction of the display panel, or a combination thereof. For example, the arrangement direction of the first part and the arrangement direction of the second part included in one or more of the first to fourth vibration devices may be the same as the horizontal direction of the display panel, the same as the vertical direction of the display panel, or a combination thereof.

[0357] Referring to FIGS. 18a and 18b, the device according to an embodiment of the present specification may further include a partition (600). For example, the partition (600) may include a first partition member (610), a second partition member (620), a third partition member (630), a fourth partition member (640), and a fifth partition member (650). Without being limited thereto, the partition (600) may include a first partition member (610), a third partition member (630), a fourth partition member (640), and a fifth partition member (650). Since the description thereof is the same as that described in FIG. 17, the description is omitted.

[0358] FIG. 19 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 20 is a drawing showing 'A' of FIG. 19. FIG. 21 is a cross-sectional view of IV-IV' shown in FIG. 20.

[0359] Referring to FIG. 19, a device according to another embodiment of the present specification may include a vibration device (200) disposed on the rear surface of a display panel (100) and a pad portion (PP).

[0360] A plurality of vibration signal line sections (140) can be connected to a vibration device (200). A plurality of vibration signal line sections (140) can be connected to a pad section (PP). For example, a plurality of vibration signal line sections (140) can provide a vibration driving signal to the vibration device (200).

[0361] Referring to FIGS. 20 and 21, the display panel (100) may include a first substrate (110), a pixel array portion (120), a second substrate (130), and a pad portion (PP). The pixel array portion (120) may be placed on the first substrate (110). The first substrate (110) may be a display substrate, but is not limited to the term. The second substrate (130) may be placed on the pixel array portion (120). The second substrate (130) may be a backplate or an encapsulation substrate, but is not limited to the term.

[0362] The pad portion (PP) may be positioned on one side of the display panel (100). For example, the pad portion (PP) may be positioned at the edge of the display panel (100). For example, the pad portion (PP) may be connected to the display panel (100).

[0363] The pad portion (PP) may include a plurality of vibration signal pads (PDv) and a plurality of display signal pads (PDd). For example, a plurality of vibration signal pads (PDv) may be arranged side by side at the edge of the display panel (100). For example, a plurality of display signal pads (PDd) may be arranged side by side at the edge of the display panel (100). For example, a plurality of vibration signal pads (PDv) and a plurality of display signal pads (PDd) may be arranged so as not to be electrically connected to each other and to be electrically separated. For example, a plurality of vibration signal pads (PDv) and a plurality of display signal pads (PDd) may be arranged side by side at the edge of the display panel (100).

[0364] Each of the plurality of vibration signal pads (PDv) can be connected to a plurality of vibration signal line sections (140). For example, each of the plurality of vibration signal pads (PDv) can be connected to the end (or one side) of each of the plurality of vibration signal line sections (140). For example, each of the plurality of vibration signal pads (PDv) can be electrically connected one-to-one with each of the plurality of vibration signal line sections (140). By doing so, each of the plurality of vibration signal pads (PDv) can provide a vibration driving signal to the vibration device (200) via the plurality of vibration signal line sections (140).

[0365] For example, the display signal pad (PDd) can receive a display signal supplied from the outside. The display signal can be supplied to the pixel array unit (120) through the display signal pad (PDd).

[0366] The vibration signal line section (140) may be placed on the display panel (100). For example, the vibration signal line section (140) may be placed on one side of the first substrate (11). For example, the vibration signal line section (140) may be connected to a pad section (PP) connected to the display panel (100). For example, the vibration signal line section (140) may be connected to a vibration signal pad (PDv) of the pad section (PP).

[0367] For example, the vibration signal line section (140) may be placed on the second substrate (130). For example, the vibration signal line section (140) may be placed to cover the upper surface and side surface of the second substrate (130). For example, the vibration signal line section (140) may be placed to cover the upper surface and side surface of each of the pixel array section (12) and / or the second substrate (130).

[0368] The vibration signal line section (140) may include an insulating layer (141), a first layer (143), and a second layer (145). For example, the vibration signal line section (140) may be configured using a pad printing method or a printing method. The insulating layer (141) may be a material including epoxy resin, acrylic resin, polyimide resin, polyimide film, polyester film, and ink, but is not limited thereto. The first layer (143) may be placed on the insulating layer (141). For example, the first layer (143) may be wiring that applies a signal to the vibration device (200). For example, the first layer (143) may be wiring that applies a vibration driving signal to the vibration device (200). For example, the first layer (143) may be composed of silver (Ag), copper (Cu), and an alloy of silver (Ag) and copper (Cu), but is not limited thereto. The second layer (145) may be placed on the first layer (143). For example, the second layer (145) may include black, but is not limited thereto. For example, the second layer (145) may cover the first layer (143). For example, the second layer (145) may completely cover the first layer (143). For example, the second layer (145) may be a clad formed on the outside of the first layer (143). For example, the second layer (145) may be a cover layer, but is not limited to the term. For example, the first layer (143) may be surrounded by an insulating layer (141) and the second layer (145).

[0369] According to an embodiment of the present specification, the vibration signal line section (140) may be connected to a pad section (PP) connected to a display panel (100). For example, the vibration signal line section (140) may apply a vibration driving signal from the pad section (PP) connected to the display panel (100) to a vibration device (200). For example, the vibration device (200) may receive a vibration driving signal through the vibration signal line section (140) located on the second substrate (130).

[0370] According to the embodiment of the present specification, since a hole in the pad portion (PP) that exposes wiring capable of supplying a vibration driving signal (or acoustic signal) provided from an acoustic processing circuit to a vibration device (200) is not configured, the problem of the image quality of the display device being degraded due to heat generated during vibration of the vibration device (200) due to the configuration of the hole can be resolved. According to the embodiment of the present specification, since a hole exposing wiring for applying a vibration driving signal does not need to be configured, the process can be simplified. According to the embodiment of the present specification, since a wiring extraction portion for applying a vibration driving signal does not need to be configured separately, the assemblability of the display device can be improved. According to the embodiment of the present specification, by configuring a vibration signal line portion connected to the pad portion, the wiring structure for supplying a signal to the vibration device can be simplified. According to the embodiment of the present specification, since the vibration signal line portion (140) for applying a signal to the vibration device is configured by a printing or printing method, the wiring process is simplified, and there is an advantage that the cable for the wiring applying the signal does not need to be configured separately.

[0371] FIG. 22 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 23 is a cross-sectional view of V-V' shown in FIG. 22.

[0372] Referring to FIGS. 22 and 23, a device according to another embodiment of the present specification may include a vibration device (200), a source PCB (50), and a control board (70) disposed on the rear of a display panel (100).

[0373] Referring to FIG. 22, the drive IC (40) can be placed on the flexible film (30). For example, the flexible film (30) can be connected to the pad portion (PP). The source PCB (50) can be placed on one side of the display panel (100). For example, the source PCB (50) can be connected to the flexible film (30).

[0374] The cable may be connected to the source PCB (50). The cable may include a first cable (60) and a second cable (65). Signal transmission lines (31) may be disposed on the flexible film (30). For example, the flexible film (30) may include signal transmission lines (31) connected to a pad portion (PP). For example, the vibration signal line portion (140) may be connected to the signal transmission lines (31) through or by the pad portion (PP). The signal transmission lines (31) may be connected to the source PCB (50). The source PCB (50) may be connected to the second cable (65). For example, the vibration signal line portion (140) may be connected to the second cable (65) by the pad portion (PP) and the source PCB (50). And, a resin (160) can be placed on one side of the drive IC (40).

[0375] A control board (70) may be placed on the rear of a display panel (100). The control board (70) may include a timing controller (75) and an acoustic processing circuit (80). For example, the acoustic processing circuit (80) may be embedded within the control board (70). A vibration driving signal (or acoustic signal) provided from the acoustic processing circuit (80) may be supplied to a vibration device (200). For example, the vibration driving signal provided from the acoustic processing circuit (80) is transmitted to a source PCB (50) by a first cable (60), and the vibration driving signal transmitted to the source PCB (50) may be connected to another source PCB (50) and to a vibration signal line section (140) through the signal transmission lines (31) of the flexible film (30) and the pad section (PP) via a second cable (65). By doing so, a vibration driving signal may be applied to the vibration device (200). For example, a vibration driving signal provided from an acoustic processing circuit (80) can be connected to a vibration signal line section (140) via a first cable (60) through signal transmission lines (31) and a pad section (PP) of a source PCB (50) and a flexible film (30). By doing so, a vibration driving signal can be applied to a vibration device (200).

[0376] The vibration signal line section (140) may include an insulating layer (141), a first layer (143), and a second layer (145). The insulating layer (141) may be a material including epoxy resin, acrylic resin, polyimide resin, polyimide film, polyester film, and ink, but is not limited thereto. The first layer (143) may be placed on the insulating layer. For example, the first layer (143) may be wiring that applies a signal to the vibration device (200). For example, the first layer (143) may be wiring that applies a vibration driving signal to the vibration device (200). For example, the first layer (143) may be composed of silver (Ag), copper (Cu), and an alloy of silver (Ag) and copper (Cu), but is not limited thereto. The second layer (145) may be placed on the first layer (143). For example, the second layer (145) may include black, but is not limited thereto. For example, the second layer (145) may cover the first layer (143). For example, the second layer (145) may completely cover the first layer (143). For example, the second layer (145) may be a clad formed on the outside of the first layer (143). For example, the second layer (145) may be a cover layer, but is not limited to the term. For example, the first layer (143) may be surrounded by an insulating layer (141) and the second layer (145).

[0377] Referring to FIG. 23, a flexible film (30) may be placed on a vibration signal line section (140). A drive IC (40) may be placed on one side of the flexible film (30). A source PCB (50) may be placed between the vibration signal line section (140) and the flexible film (30). The flexible film (30) may be connected to a pad section (PP). For example, the vibration signal line section (140) may be connected to signal transmission lines (31) by the pad section (PP). For example, the flexible film (30) may be connected to a vibration signal pad (PDv). The flexible film (30) may be in contact with the upper surface of the source PCB (50) and the upper surface of the pad section (PP). For example, the flexible film (30) may be in contact with the side of the vibration signal line section (140). The resin (160) may be placed on one side of the pad portion (PP). For example, the resin (160) may cover one side of the flexible film (30). The resin (160) may protect the flexible film (30) and the pad portion (PP). For example, the resin (160) may protect the side of the flexible film (30) and the side of the pad portion (PP).

[0378] According to an embodiment of the present specification, a vibration signal line section (140) capable of supplying a vibration driving signal (or acoustic signal) provided from an acoustic processing circuit (80) to a vibration device (200) is configured, so that a hole in a pad section (PP) that exposes wiring supplying a signal to the vibration device (200) can be not configured. In addition, since the vibration signal line section (154) can apply a vibration driving signal to the vibration device (200) by means of a pad section (PP) connected to a display panel (100), a hole in the pad section is not configured, thereby improving the design freedom of the device.

[0379] FIG. 24 is a drawing showing an apparatus according to another embodiment of the present specification. FIG. 25 is a cross-sectional view of VI-VI' shown in FIG. 24.

[0380] Referring to FIGS. 24 and 25, the source PCB (50) may further include a heat dissipation member (180). The heat dissipation member (180) can dissipate heat from the source PCB (50). For example, the heat dissipation member (180) may be made of one or more materials selected from aluminum (Al) and aluminum (Al) alloys, but is not limited thereto. The heat dissipation member (180) may be configured to be the same size as or larger than the size of the source PCB (50).

[0381] According to an embodiment of the present specification, a heat dissipation member (180) may be disposed between the source PCB (50) and the vibration signal line section (140). The heat dissipation member (180) may cover the side and top surfaces of the vibration signal line section (140). By doing so, the effect of heat from the source PCB (50) on the vibration signal line section (140) and / or the display panel (100) can be reduced.

[0382] An adhesive member (185) may be disposed between the vibration signal line section (140) and the heat dissipation member (180). For example, the adhesive member (185) may include a foam pad, double-sided tape, or an adhesive. For example, the adhesive layer of the adhesive member (185) may include epoxy, acrylic, silicone, or urethane, but is not limited thereto.

[0383] FIGS. 26a to 26e are drawings illustrating a manufacturing method according to an embodiment of the present specification.

[0384] Referring to FIG. 26a, a vibration device (200) may be disposed on the rear surface of a display panel (100). The display panel (100) may include a pad portion (PP). For example, a pad portion (PP) may be disposed on one side of the display panel (100). For example, a vibration device (200) may be disposed on the rear surface of the display panel (100) that includes the pad portion (PP).

[0385] Referring to FIG. 26b, the step of forming a vibration signal line section (140) on the rear surface of a display panel (100) may include the step of forming an insulating layer (141) between a pad section (PP) and a vibration device (200). For example, the vibration signal line section (140) connected to the vibration device (200) may be placed on the rear surface of the display panel (100). For example, a vibration signal line section (140) connecting the pad section (PP) and the vibration device (200) may be placed. For example, a vibration signal line section (140) connecting the pad section (PP) and the vibration device (200) may be placed on the rear surface of the display panel (100). The vibration signal line section (140) may be connected to the pad section (PP).

[0386] Referring to FIG. 26c, a first layer (143) can be formed on an insulating layer (141). For example, the first layer (143) can be formed between the insulating layers (141). The first layer (143) may be wiring that applies a vibration driving signal to a vibration device (200). For example, the first layer (143) may be composed of silver (Ag), copper (Cu), and an alloy of silver (Ag) and copper (Cu), but is not limited thereto.

[0387] Referring to FIG. 26d, a second layer (145) may be formed on the first layer (143). For example, the second layer (145) may include black, but is not limited thereto. For example, the second layer (145) may cover the first layer (143). For example, the second layer (145) may completely cover the first layer (143). For example, the second layer (145) may be a clad formed on the outside of the first layer (143). For example, the second layer (145) may cover the insulating layer (141) and the first layer (143).

[0388] Referring to FIG. 26e, a driving circuit may be connected to a pad portion (PP). For example, the driving circuit may include a flexible film (30), a source PCB (50), and cables (61, 65). The flexible film (30) may be connected to the pad portion (PP). A drive IC (40) may be attached to the flexible film (50). For example, the source PCB (50) may be connected to the flexible film (30) and placed on one side of the display panel (100). A vibration signal line portion (140) may be connected to the source PCB (50) through the pad portion (PP) and the flexible film (30). A second cable (65) may be connected to the source PCB (50). For example, the second cable (65) may be connected to the vibration signal line portion (140) of the vibration device (200). For example, the vibration signal line section (140) can be connected to the second cable (65) by the source PCB (50) through the pad section (PP) and the flexible film (30). For example, the vibration signal line section (140) can be connected to the second cable (65) by the pad section (PP) and the source PCB (50). And, the source PCB (50) can be connected to the control board (70). For example, the source PCB (50) can be connected to the control board (70) by the first cable (60).

[0389] As another example, a heat dissipation member (180) may be further placed on the vibration signal line section (140). After placing the heat dissipation member (180), a flexible film (30) connected to the source PCB (50) may be attached to the pad section (PP). The source PCB (50) may be placed on the rear surface of the display panel (100) so as to overlap with the heat dissipation member (180). For example, the heat dissipation member (180) may be placed between the vibration signal line section (140) and the source PCB (50). The vibration signal line section (140) may be connected to the source PCB (50) through the pad section (PP) and the flexible film (30). A second cable (65) may be connected to the source PCB (50). For example, the second cable (65) may be connected to the vibration signal line section (140) of the vibration device (200). For example, the vibration signal line section (140) can be connected to the second cable (65) by the source PCB (50). For example, the vibration signal line section (140) can be connected to the second cable (65) by the pad section (PP) and the source PCB (50). Also, the source PCB (50) can be connected to the control board (70). For example, the source PCB (50) can be connected to the control board (70) by the first cable (60).

[0390] The vibration device according to the embodiments of the present specification may be applied to a vibration device placed in a device. The device according to the embodiments of the present specification may be applied to mobile devices, video phones, smart watches, watch phones, wearable apparatuses, foldable apparatuses, rollable apparatuses, bendable apparatuses, flexible apparatuses, curved apparatuses, sliding apparatuses, electronic notebooks, e-books, PMPs (portable multimedia players), PDAs (personal digital assistants), MP3 players, mobile medical devices, desktop PCs, laptop PCs, netbook computers, workstations, navigation systems, vehicle navigation systems, vehicle display devices, vehicle devices, theater devices, theater display devices, televisions, wallpaper devices, signage devices, game devices, laptops, monitors, cameras, camcorders, and home appliances, etc. In addition, the vibration device of this specification may be applied to an organic light-emitting lighting device or an inorganic light-emitting lighting device. When the vibration device is applied to a lighting device, it may function as a light and a speaker. In addition, when the vibration device of this specification is applied to a mobile device, etc., it may be one or more of a speaker, a receiver, and a haptic, but is not limited thereto.

[0391] The device and the method of manufacturing the same according to the embodiments of the present specification may be described as follows.

[0392] An apparatus according to an embodiment of the present specification includes a display panel that displays an image and includes a pad portion, a vibration device disposed on the rear surface of the display panel and vibrating the display panel, and a vibration signal line portion between the pad portion and the vibration device.

[0393] According to some embodiments of the present specification, the vibration signal line portion may include an insulating layer, a first layer on the insulating layer, and a second layer on the first layer.

[0394] According to some embodiments of the present specification, the first layer may be wiring that applies a signal to a vibration device.

[0395] According to some embodiments of the present specification, a display panel may include a first substrate, a pixel array portion on the first substrate, and a second substrate on the pixel array portion.

[0396] According to some embodiments of the present specification, the vibration signal line portion may be on the second substrate.

[0397] According to some embodiments of the present specification, the device may further include a flexible film connected to a pad portion, a source PCB connected to the flexible film and located on one side of a display panel, and a cable connected to the source PCB, and the vibration signal line portion may be connected to the cable by the pad portion and the source PCB.

[0398] According to some embodiments of the present specification, the flexible film may include a signal transmission line connected to a pad portion, and the vibration signal line portion may be connected to the signal transmission line by the pad portion.

[0399] According to some embodiments of the present specification, the source PCB may be located between the vibration signal line section and the flexible film.

[0400] According to some embodiments of the present specification, a heat dissipation member located between the vibration signal line section and the source PCB may be further included.

[0401] According to some embodiments of the present specification, a support member disposed on the rear surface of the display panel may be further included, and the support member may include a hole overlapping with the vibration device.

[0402] According to some embodiments of the present specification, the vibration device may include two or more vibration modules.

[0403] According to some embodiments of the present specification, each of two or more vibration modules may include a first part of inorganic material and a second part of organic material disposed between the first part.

[0404] According to some embodiments of the present specification, the arrangement direction of the first part and the second part may be the same as the horizontal direction of the display panel, the same as the vertical direction, or a combination thereof.

[0405] According to some embodiments of the present specification, the first part may have piezoelectric properties, and the second part may have flexible properties.

[0406] According to some embodiments of the present specification, each of the two or more vibration modules may further include a vibration layer, a first protective member disposed on a first surface of the vibration layer, and a second protective member disposed on a second surface different from the first surface of the vibration layer.

[0407] According to some embodiments of the present specification, a first electrode layer between a vibrating layer and a first protective member, and a second electrode layer between a vibrating layer and a second protective member may be further included.

[0408] According to some embodiments of the present specification, a pad member disposed between two or more vibration modules may be further included.

[0409] According to some embodiments of the present specification, the pad member may further include a vibrating layer, a first protective member disposed on a first surface of the vibrating layer, and a second protective member disposed on a second surface different from the first surface of the vibrating layer.

[0410] According to some embodiments of the present specification, a support member disposed on the rear surface of a display panel and a pad member located between a vibration device and the support member may be further included.

[0411] According to some embodiments of the present specification, a display panel includes a first area and a second area, and a vibration device includes a first vibration device that vibrates the first area and a second vibration device that vibrates the second area, and a vibration signal line portion may be connected to each of the first vibration device and the second vibration device.

[0412] The device according to the embodiment of the present specification includes a vibrating object comprising a pad portion, a vibrating device disposed on the vibrating object, and a vibration signal line portion connected to the pad portion and applying a signal to the vibrating device.

[0413] According to some embodiments of the present specification, the object to be vibrated comprises a plate, and the plate may comprise a metal material or one or more single non-metallic or composite non-metallic materials selected from wood, plastic, glass, cloth, and leather.

[0414] According to some embodiments of the present specification, the vibrating object may include a display panel having a plurality of pixels for displaying an image, or one or more non-display panels among a light-emitting diode lighting panel, an organic light-emitting lighting panel, and an inorganic light-emitting lighting panel.

[0415] According to some embodiments of the present specification, the vibrating object may include a display panel having a plurality of pixels for displaying an image, or may include one or more of a vehicle interior, a vehicle window, a building ceiling, a building interior, a building window, an aircraft interior, and an aircraft window.

[0416] According to some embodiments of the present specification, the vibration device may include a plurality of vibration generators.

[0417] According to some embodiments of the present specification, each of the plurality of vibration generators may include a plurality of vibration modules.

[0418] According to some embodiments of the present specification, each of the plurality of vibration generators may be stacked so as to be displaced in the same direction from one another.

[0419] According to some embodiments of the present specification, a pad member disposed on the rear of each of a plurality of vibration generators may be further included.

[0420] According to some embodiments of the present specification, a support member disposed on the rear surface of a display panel or a vibrating object, and a pad member located between the vibrating device and the support member may be further included.

[0421] According to some embodiments of the present specification, the pad member may be configured in the same way as the vibration device.

[0422] A method for manufacturing a device according to an embodiment of the present specification includes the steps of: placing a vibration device on the rear surface of a display panel including a pad portion; forming a vibration signal line portion connecting the pad portion and the vibration device on the rear surface of the display panel; and connecting a driving circuit portion to the pad portion.

[0423] According to some embodiments of the present specification, the step of forming a vibration signal line portion on the rear surface of a display panel includes the step of forming an insulating layer between a pad portion and a vibration device, the step of forming a first layer on the insulating layer, and the step of forming a second layer on the first layer, wherein the first layer may be a wiring that applies a signal to the vibration device.

[0424] According to some embodiments of the present specification, the step of forming a heat dissipation member on the vibration signal line portion may be further included.

[0425] According to some embodiments of the present specification, the driving circuit further includes a flexible film connected to a pad portion, a source PCB connected to the flexible film and located on one side of a display panel, and a cable connected to the source PCB, and a heat dissipation member may be located between the vibration signal line portion and the source PCB.

[0426] Although the embodiments of this specification have been described in more detail with reference to the attached drawings, this specification is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of this specification. Accordingly, the embodiments disclosed in this specification are intended to explain, not limit, the technical spirit of this specification, and the scope of the technical spirit of this specification is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of this specification shall be interpreted by the claims, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of this specification. Explanation of the symbols

[0427] 100: Display panel 300: Support member 600: Partition 200, 210-1, 210-2, 210-3, 210-4, 220-1, 220-2: Vibration device 701, 702: Pad absence 30: Flexible film 40: Drive IC 50: Source PCB 70: Control board 80: Acoustic processing circuit 140: Vibration signal line section

Claims

Claim 1 A device comprising: a display panel that displays an image and includes a pad portion; a vibration device disposed on the rear surface of the display panel and vibrating the display panel; a support member disposed on the rear surface of the display panel and spaced apart from the vibration device with a gap space between them; a plurality of holes provided in the support member and exposing the gap space; and a vibration signal line portion between the pad portion and the vibration device. Claim 2 The device according to claim 1, wherein the vibration signal line portion comprises an insulating layer; a first layer on the insulating layer; and a second layer on the first layer. Claim 3 In claim 2, the first layer is a device that is wiring for applying a signal to the vibration device. Claim 4 In claim 1, the device comprises a display panel including: a first substrate; a pixel array portion on the first substrate; and a second substrate on the pixel array portion. Claim 5 In claim 4, the vibration signal line portion is a device located on the second substrate. Claim 6 The device according to claim 1 further comprises: a flexible film connected to the pad portion; a source PCB connected to the flexible film and located on one side of the display panel; and a cable connected to the source PCB, wherein the vibration signal line portion is connected to the cable by the pad portion and the source PCB. Claim 7 In claim 6, the flexible film comprises a signal transmission line connected to the pad portion, and the vibration signal line portion is connected to the signal transmission line by the pad portion, forming a device. Claim 8 In claim 6, the source PCB is a device located between the vibration signal line section and the flexible film. Claim 9 In claim 6, the device further comprises a heat dissipation member located between the vibration signal line section and the source PCB. Claim 10 In claim 1, the plurality of holes overlap with the vibration device, the device. Claim 11 In claim 1, the vibration device comprises two or more vibration modules. Claim 12 A device according to claim 11, wherein each of the two or more vibration modules comprises a first portion of an inorganic material and a second portion of an organic material disposed between the first portions. Claim 13 A device according to claim 12, wherein the arrangement direction of the first part and the second part is the same as the horizontal direction of the display panel, the same as the vertical direction, or a combination thereof. Claim 14 A device according to claim 12, wherein the first part has piezoelectric properties and the second part has flexible properties. Claim 15 The device according to claim 11, wherein each of the two or more vibration modules further comprises: a vibration layer; a first protective member disposed on a first surface of the vibration layer; and a second protective member disposed on a second surface of the vibration layer different from the first surface. Claim 16 An apparatus according to claim 15, further comprising: a first electrode layer located between the vibration layer and the first protective member; and a second electrode layer located between the vibration layer and the second protective member. Claim 17 The device according to claim 11, further comprising a pad member disposed between the two or more vibration modules. Claim 18 In claim 17, the pad member comprises: a vibrating layer; a first electrode layer disposed on a first surface of the vibrating layer; and a second electrode layer disposed on a second surface of the vibrating layer different from the first surface. Claim 19 A device according to claim 1, further comprising a pad member located between the vibration device and the support member. Claim 20 In claim 1, the display panel includes a first area and a second area, the vibration device includes a first vibration device that vibrates the first area and a second vibration device that vibrates the second area, and the vibration signal line portion is connected to each of the first vibration device and the second vibration device. Claim 21 A device comprising: a vibrating object including a pad portion; a vibrating device disposed on the vibrating object; a support member disposed on the rear surface of the vibrating object and spaced apart from the vibrating device with a gap space between them; a plurality of holes provided in the support member and exposing the gap space; and a vibration signal line portion connected to the pad portion and applying a signal to the vibrating device. Claim 22 In claim 21, the device comprises a plate, wherein the plate comprises a metal material or one or more single nonmetal or composite nonmetal materials selected from wood, plastic, glass, cloth, and leather. Claim 23 In claim 21, the vibrating object comprises a display panel having a plurality of pixels for displaying an image, or a non-display panel comprising one or more of a light-emitting diode lighting panel, an organic light-emitting lighting panel, and an inorganic light-emitting lighting panel. Claim 24 In claim 21, the vibrating object comprises a display panel having a plurality of pixels for displaying an image, or comprises one or more of a vehicle interior, a vehicle window, a building ceiling, a building interior, a building window, an aircraft interior, and an aircraft window. Claim 25 A device according to any one of claims 1 to 10 and claims 21 to 24, wherein the vibration device comprises a plurality of vibration generators. Claim 26 In claim 25, the device wherein each of the plurality of vibration generators comprises a plurality of vibration modules. Claim 27 In claim 25, the device wherein each of the plurality of vibration generators is stacked so as to be displaced in the same direction from one another. Claim 28 The device according to claim 25, further comprising a pad member disposed on the rear surface of each of the plurality of vibration generators. Claim 29 A device according to any one of claims 1 to 10 and claims 21 to 24, further comprising a pad member located between the vibration device and the support member. Claim 30 In claim 29, the pad member is configured identically to the vibration device. Claim 31 A method for manufacturing a device comprising: a step of arranging a vibration device and a support member on the rear surface of a display panel including a pad portion; a step of forming a vibration signal line portion connecting the pad portion and the vibration device on the rear surface of the display panel; and a step of connecting a driving circuit portion to the pad portion, wherein the support member is spaced apart from the vibration device with a gap space between them, and the support member includes a plurality of holes that expose the gap space. Claim 32 A method for manufacturing a device according to claim 31, wherein the step of forming the vibration signal line portion on the rear surface of the display panel comprises: forming an insulating layer between the pad portion and the vibration device; forming a first layer on the insulating layer; and forming a second layer on the first layer, wherein the first layer is a wiring that applies a signal to the vibration device. Claim 33 A method for manufacturing a device according to claim 31, further comprising the step of forming a heat dissipation member on the vibration signal line portion. Claim 34 A method for manufacturing a device according to claim 33, wherein the driving circuit part further comprises: a flexible film connected to the pad part; a source PCB connected to the flexible film and located on one side of the display panel; and a cable connected to the source PCB, and the heat dissipation member is located between the vibration signal line part and the source PCB.

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