Apparatus and vibration generating device

Abstract

To provide a device that can improve the sound quality and provide improved sound pressure characteristics.SOLUTION: The device includes a vibrating member, a first cover, a vibrating device, and a first member, the first cover arranged on the back of the vibrating member and including a hole, the vibrating device arranged on the back of the first cover and covering the hole, and the first member arranged on the back of the first cover and enclosing the hole and the vibrating device.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present specification relates to an apparatus and a vibration generating device. [Background technology]

[0002] A device (or electronic device), for example, a display device, must have a separate speaker installed in order to display an image on a display panel and provide sound. When installing a speaker in a device, a problem occurs in that the speaker takes up space, which restricts the design and spatial layout of the device.

[0003] Since the sound output from the speaker travels to the rear or bottom of the device, there is a problem that the sound quality is degraded due to interference between the sound reflected from the wall or floor, which makes it difficult to transmit the sound accurately and reduces the immersive feeling of the viewer or user. Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, the inventors of the present specification have recognized the above-mentioned problems and conducted several experiments to realize a device that can improve the sound quality of the sound and improve the sound pressure characteristics. Through multiple experiments, they have invented a new device and vibration device that can improve the sound quality of the sound and improve the sound pressure characteristics.

[0005] The problem to be solved by the embodiments of the present specification is to provide a device that can vibrate a vibrating member (or a display member) to generate sound directed toward the front of the device, thereby improving the acoustic characteristics and / or sound pressure characteristics.

[0006] The problems to be solved by the embodiments of the present specification are not limited to those mentioned above, and other problems not mentioned will be clearly understood by a person of ordinary skill in the art from the following description. [Means for solving the problem]

[0007] An apparatus according to an embodiment of the present specification includes a vibrating member, a first cover arranged on the rear surface of the vibrating member and including a hole, a vibrating device arranged on the rear surface of the first cover and covering the hole, and a first member arranged on the rear surface of the first cover and covering the hole and the vibrating device.

[0008] A vibration generating device according to an embodiment of the present specification includes a first member including a first hole and a second hole, a first vibration device arranged in the first hole, a second vibration device arranged in the second hole, and a second member connected to a rear surface of the vibration member and covering the first member and the first vibration device and the second vibration device.

[0009] Specific details of the various embodiments of the present specification other than the means for solving the above problems are included in the following description and drawings. Effect of the Invention

[0010] The device according to the embodiments of the present specification can output sound in front of a display panel or a vibrating member, and can output sound with improved sound quality, acoustic performance, and sound pressure characteristics, thereby enhancing the sense of immersion of the viewer (or user).

[0011] The device according to the embodiments of the present specification can provide a device with improved sound pressure characteristics and / or acoustic characteristics by configuring a member on the back surface of the vibration device.

[0012] The vibration generating device according to the embodiments of the present specification can output sound in front of the vibrating member and can output sound with improved sound quality, acoustic performance and / or sound pressure characteristics, thereby increasing the sense of immersion of the viewer (or user).

[0013] The device according to the embodiment of the present specification can provide a device that can expand the sound range because the air impedance of the vibration generating device can be controlled by configuring components.

[0014] The device according to the embodiments of the present specification includes a film-type vibration device, which can provide a device with improved sound pressure characteristics and / or acoustic characteristics including the high-frequency band, and can reduce the thickness of the device, thereby providing a device with a slim structure.

[0015] The effects of the present specification are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

[0016] The above-mentioned problems to be solved, means for solving the problems, and effects do not specify essential features of the claims, and the scope of the claims is not limited by the matters described in the contents of the invention. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 shows an apparatus according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is an exploded perspective view of the device shown in FIG. [Diagram 3] 2 is a cross-sectional view taken along line II' shown in FIG. [Figure 4] FIG. 4 is an enlarged view of part 'A' shown in FIG. [Diagram 5] FIG. 4 is an enlarged view of part 'B' shown in FIG. [Figure 6] FIG. 4 is an enlarged view of part 'C' shown in FIG. [Figure 7] FIG. 1 illustrates a vibration generator according to an embodiment of the present specification. [Figure 8] 8 is a cross-sectional view taken along line II-II' shown in FIG. 7. [Figure 9A] FIG. 2 is a diagram showing a vibrating part of a vibration generator according to an embodiment of the present specification. [Figure 9B] FIG. 2 is a diagram showing a vibrating part of a vibration generator according to an embodiment of the present specification. [Figure 9C] FIG. 2 is a diagram showing a vibrating part of a vibration generator according to an embodiment of the present specification. [Figure 9D] FIG. 2 is a diagram showing a vibrating part of a vibration generator according to an embodiment of the present specification. [Figure 9E] FIG. 2 is a diagram showing a vibrating part of a vibration generator according to an embodiment of the present specification. [Figure 9F] FIG. 2 is a diagram showing a vibrating part of a vibration generator according to an embodiment of the present specification. [Figure 10] FIG. 4 is another enlarged view of the portion 'B' shown in FIG. [Figure 11] FIG. 4 is another enlarged view of the portion 'B' shown in FIG. [Figure 12] FIG. 4 is another enlarged view of the portion 'B' shown in FIG. [Figure 13] FIG. 4 is another enlarged view of part 'C' shown in FIG. [Figure 14] FIG. 2 is an exploded view of a device according to another embodiment of the present disclosure. [Figure 15] 15 is another cross-sectional view of the connection structure of the device shown in FIG. 14 along line II' shown in FIG. [Figure 16] FIG. 16 is an enlarged view of part 'D' shown in FIG. [Figure 17] FIG. 15 is a diagram illustrating the vibration generator shown in FIG. [Figure 18] 15 is a cross-sectional view of the connection structure of the device shown in FIG. 14 taken along line II' in FIG. 1. [Figure 19] FIG. 19 is an enlarged view of part 'E' shown in FIG. [Figure 20] 1 is a graph showing sound pressure level characteristics of a device according to an embodiment of the present specification. [Figure 21] 11 is a graph showing another sound pressure level characteristic of a device according to an embodiment of the present specification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The advantages and features of the present specification, and the method of achieving them, will become clear by referring to the following detailed description of the embodiment with accompanying drawings. However, the present specification is not limited to the embodiment disclosed below, and may be realized in various different forms. The embodiment is merely provided to complete the disclosure of the specification and to fully inform those skilled in the art of the invention to which the specification pertains, and the specification is defined only by the scope of the claims.

[0019] In order to explain the embodiments of the present specification, the shapes, sizes, ratios, angles, numbers, etc. shown in the drawings are illustrative and the present specification is not limited to the matters shown in the drawings. The same reference numerals refer to the same components throughout the specification. In addition, in explaining the present specification, if a specific description of related known technology is determined to unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When "including," "having," "consisting of," etc. are used in the present specification, other parts can be added unless "only" is used. When a component is expressed in the singular, it includes the case where it includes a plurality unless otherwise expressly stated.

[0020] When interpreting elements, they are interpreted as including a range of error even if there is no separate explicit description of the range of error.

[0021] When describing a positional relationship, for example when the positional relationship of two parts is described using "above", "on top", "below", "beside", etc., one or more other parts may also be located between the two parts, unless "immediately" or "directly" is used.

[0022] When describing a temporal relationship, for example when the temporal sequence is described using "after," "following," "next to," or "before," it can also include cases where the context is not consecutive, since "immediately" or "directly" is not used.

[0023] Although terms such as "first", "second", "1-1", "1-2", "2-1", "2-2", ... are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component referred to below may be the second component within the technical spirit of the present invention.

[0024] In describing components in this specification, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used. Such terms are used to distinguish the components from other components, and do not limit the nature, order, sequence, or number of the components. When a component is described as being "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but unless otherwise expressly stated, other components may be "intervening" between each component that may be indirectly connected or connected.

[0025] The term "at least one" should be understood to include all combinations that can be presented from one or more of the associated items. For example, the meaning of "at least one of the first item, the second item, and the third item" can include all combinations of items that can be presented in more than one of the first item, the second item, and the third item, not just each of the first item, the second item, or the third item.

[0026] In the present specification, the term "apparatus" may include a display device such as a liquid crystal display (LCD) or an organic light emitting display (OLED) including a display panel and a driver for driving the display panel. In addition, in the present specification, the term "apparatus" may also include a set electronic apparatus or set device such as a notebook computer, a television, a computer monitor, an automotive apparatus or other forms of a vehicle, which is a complete product or final product including an LCD or an OLED, and a mobile electronic apparatus such as a smartphone or an electronic pad.

[0027] Therefore, the device in this specification can include a display device itself such as an LCD or OLED, and a set device that is an application product including an LCD or OLED or a device for an end user.

[0028] In some embodiments, LCD and OLED, which are composed of a display panel and a driver, can be referred to as a "display device," and an electronic device as a finished product including the LCD or OLED can be referred to as a "set device." For example, the display device can include a liquid crystal (LCD) or organic light emitting diode (OLED) display panel and a source PCB, which is a controller for driving the display panel. The set device can further include a set PCB (or control PCB), which is a set controller electrically connected to the source PCB and drives the entire set device.

[0029] The device including the vibration device in this specification may be applied to a vehicle in a user interface module such as a central control panel in an automobile. For example, such a device may be implemented between two front seat occupants so that the vibration of the device is propagated toward the interior of the vehicle. Thus, the audio experience in the vehicle may be improved compared to having speakers only on the interior sides of the vehicle.

[0030] The features of the various embodiments of this specification may be combined or combined with each other, either partially or in whole, and may be technically interlocked and driven in various ways, and each embodiment may be implemented independently of the other, or may be implemented together in a codependent relationship.

[0031] The drawings attached below are provided to aid in understanding the embodiments of the present specification, and together with the detailed description, provide the embodiments. However, the technical features of the embodiments are not limited to the specific drawings, and the features disclosed in each drawing can be combined with each other to form a new embodiment.

[0032] The embodiments of the present specification will be described in detail with reference to the accompanying drawings and examples as follows: The scales of the components shown in the drawings may be different from the actual scales for convenience of explanation, and are not limited to the scales shown in the drawings.

[0033] FIG. 1 is a diagram illustrating an apparatus according to an embodiment of the present specification. Referring to FIG. 1, the apparatus according to the embodiment of the present specification may include a display member 200. For example, the display member 200 may display an image, for example, an electronic image, or a digital image, or a still image, or a video image. The apparatus may generate an audio and / or a haptic feedback (or a haptic vibration) by vibration of the display member 200. For example, the apparatus may generate a first audio and / or a first haptic feedback in one region and a second audio and / or a second haptic feedback in another region.

[0034] According to an embodiment of the present specification, the device can output sounds (S1, S2) (or vibration sounds or display vibration sounds) by vibration of the display member 200 to display an image. For example, in the device, the display member 200 can be vibrated by a vibration device to generate sounds (S1, S2). Thus, the device according to the embodiment of the present specification can use the display member 200 as a diaphragm for sound generation and / or haptic feedback.

[0035] The device according to the embodiment of the present specification can output sounds (S1, S2) to the front of the screen (FD) using the display member 200 as a diaphragm for generating sounds, thereby enabling accurate sound transmission, improving sound quality, and enhancing the immersive feeling of the viewer or user. For example, the display member 200 can be, but is not limited to, a vibrating member, a vibrating object, a display panel, or a diaphragm.

[0036] Fig. 2 is an exploded perspective view of the device shown in Fig. 1. Fig. 3 is a cross-sectional view taken along line II' in Fig. 1. Fig. 4 is an enlarged view of part 'A' in Fig. 3.

[0037] 1 to 4, a device according to an embodiment of the present specification may include a front member 100, a display member 200, a guide member 300, a first cover 400, one or more vibration devices 500, a first member 600, and a second cover 700. The configuration of the device is not limited thereto.

[0038] The front member 100 may be the frontmost structure of the device. For example, the front member 100 may be disposed in front of the display member 200 to protect the screen of the display member 200. For example, the front member 100 may cover the front surface of the display member 200 to protect the display member 200 from external impact. In addition, the front member 100 may generate sound (S) and / or haptic feedback by vibrating together with the vibration of the display member 200. For example, the front member 100 may generate different sounds (S1, S2) and / or haptic feedback in different regions.

[0039] According to an embodiment of the present specification, the front member 100 may be made of a transparent plastic material, a glass material, or a reinforced glass material. As an embodiment of the present specification, the front member 100 may have any one of sapphire glass and gorilla glass, or a laminated structure thereof. As another embodiment of the present specification, the front member 100 may include a transparent plastic material such as PET (polyethyleneterephthalate). The front member 100 may be made of reinforced glass in consideration of scratches and transparency. For example, the front member 100 may be a front structure, a front window, a cover window, a glass window, a cover screen, a screen cover, or a window glass, but is not limited thereto.

[0040] According to the embodiment of the present specification, the front member 100 may cover the remaining non-display area except for the display area of ​​the display member 200. For example, the front member 100 may include a transparent area overlapping the display area of ​​the display member 200 and a non-transparent area (or a light-shielding area) overlapping the non-display area of ​​the display member 200. For example, the non-transparent area may cover not only the non-display area of ​​the display member 200 but also the non-display area where no image is displayed on the device.

[0041] The front member 100 may have a shape corresponding to the outer shape or outer frame of the display member 200. For example, the front member 100 may have a polygonal shape including a quadrangular shape or a square shape, or a non-polygonal shape including at least one side having a curved shape, but is not limited thereto.

[0042] The device according to the embodiments of the present disclosure may further include a first connecting member 110 .

[0043] The first connecting member 110 may be disposed on a side of the front member 100. For example, the first connecting member 110 may be disposed so as to surround the side of the front member 100. The first connecting member 110 may be disposed so as to cover at least one of each side and each corner of the front member 100. The first connecting member 110 may be disposed between the front member 100 and the second cover 700. The first connecting member 110 may be disposed along between the front member 100 and the upper inner side of the second cover 700. The first connecting member 110 may connect or connect the front member 100 and the second cover 700, and may prevent light from leaking between the front member 100 and the second cover 700 (side light leakage) by filling the space between the front member 100 and the second cover 700.

[0044] According to an embodiment of the present specification, the first connecting member 110 may be made of a silicone-based or ultraviolet (UV) curing sealant (or resin). Considering the process takt time (Tact Time or Takt Time), the first connecting member 110 may be made of an ultraviolet (UV) curing sealant. The first connecting member 110 may be colored (e.g., blue, red, cyan, or black), but is not limited thereto. For example, the first connecting member 110 may be made of a colored resin or a light-shielding resin to prevent side light leakage.

[0045] The display member 200 is disposed on the rear (or back) of the front member 10 and can display an image. For example, the image can include an electronic image, a digital image, a still image, or a video image. For example, the display member 200 can include a liquid crystal display panel, but the type of the display member 200 is not limited thereto. For example, the display member 200 can include display panels such as a light-emitting display panel, an electrophoretic display panel, a micro light-emitting diode display panel, an electrowetting display panel, or a quantum dot light-emitting display panel.

[0046] According to an embodiment of the present specification, the back surface (or rear surface) of the display member 200 may include a middle portion (CP) and an edge portion (EP). For example, the back surface of the display member 200 may include a middle portion (CP) and two edge portions (EP1, EP2) that are parallel to each other and sandwich the middle portion (CP).

[0047] The middle portion (CP) of the display member 200 may include a first middle portion (CP1) and a second middle portion (CP2). For example, the first middle portion (CP1) may be a left portion (or a left middle portion) of the middle portion (CP), while the second middle portion (CP2) may be a right portion (or a right middle portion) of the middle portion (CP). The first middle portion (CP1) and the second middle portion (CP2) may be symmetrical about the middle line (CL) of the display member 200 based on the first direction (X) (or horizontal direction) of the display member 200. The first middle portion (CP1) and the first edge portion (EP1) may constitute a first portion (or left portion) (P1) of the display member 200, and the second middle portion (CP2) and the second edge portion (EP2) may constitute a second portion (or right portion) (P2) of the display member 200.

[0048] The display member 200 according to the embodiment of the present specification may include a display panel 210 and a backlight 230, but the configuration of the display member 200 is not limited thereto.

[0049] The display panel 210 is disposed on the rear surface of the front member 10 and can display an image. For example, the image can include an electronic image, a digital image, a still image, or a video image.

[0050] The display panel 210 according to the embodiment of the present specification may display an image using light irradiated from the backlight 230. In addition, the display panel 210 may be a touch sensor that senses a touch on the front member 10, for example, a touch by a user. The display panel 210 may output sound (S) by vibration of the vibration device 500, or generate haptic feedback (or haptic vibration) in response to a touch.

[0051] The display panel 210 may be disposed on the rear surface of the front member 100 through a bonding process using a panel bonding material (or a connecting material or a transparent adhesive material). The panel bonding material may include, but is not limited to, a pressure sensitive adhesive (PSA), an optically clear adhesive (OCA), or an optically clear resin (OCR).

[0052] According to an embodiment of the present specification, the display panel 210 may have a polygonal shape including a rectangular shape or a square shape, or a non-polygonal shape including at least one side having a curved shape, but is not limited thereto. The display panel 210 may have the same or different shape as the front member 100. For example, the front member 100 may have a rectangular shape, and the display panel 210 may have a rectangular shape having a smaller size than the front member 100. For another example, the front member 100 may have a non-polygonal shape, and the display panel 210 may have a non-polygonal shape or a rectangular shape having a smaller size than the front member 100.

[0053] The display panel 210 may be a diaphragm that vibrates (or is driven) by the vibration of the vibration device 500 and outputs sounds (S1, S2) to the front (FD). For example, the display panel 210 may simultaneously or sequentially output a first sound (S1) of a first range band and a second sound (S2) of a second range band to the front (FD) by the vibration of the vibration device 500. According to an embodiment of the present specification, the first range band and the second range band may be the same or different. For example, the first sound (S1) of the first range band may be output to the front (FD) at a first portion (or left portion) (P1) of the display panel 210, and the second sound (S2) of the second range band may be output to the front (FD) at a second portion (or right portion (P2)) of the display panel 210. The display panel 210 may be a diaphragm that vibrates by the vibration of the vibration device 500 and generates haptic feedback. For example, display panel 210 can generate a first haptic feedback at a left portion (P1) and a second haptic feedback at a right portion (P2) by vibration of vibration device 500. For example, display panel 210 can generate a first haptic feedback at a first edge portion (EP1) and a second haptic feedback at a second edge portion (EP2).

[0054] 4, a display panel 210 according to an embodiment of the present specification may include a first substrate 211, a second substrate 213, a first polarizing member 215, and a second polarizing member 217. The configuration of the display panel 210 is not limited thereto.

[0055] The first substrate 211 may be a lower substrate or a thin film transistor array substrate. For example, the first substrate 211 may include a pixel array having a plurality of pixels formed in pixel regions intersected by a plurality of gate lines and a plurality of data lines. Each of the plurality of pixels may include a thin film transistor connected to the gate line and the 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.

[0056] The first substrate 211 may further include a pad section provided on a first edge and a gate driving circuit provided on a second edge. The pad section may supply signals provided from the outside to the pixel array and the gate driving circuit. For example, the pad section may include a plurality of data pads connected to a plurality of data lines via a plurality of data link lines, and a plurality of gate input pads connected to the gate driving circuit via a gate control signal line.

[0057] The gate driving circuit may be built (or integrated) in the second edge of the first substrate 211 so as to be connected to the gate lines in a one-to-one relationship. For example, the gate driving circuit may be a shift register including transistors formed by the same process as the thin film transistors provided in the pixel region. Also, the gate driving circuit may not be built in the first substrate 211, but may be realized in the form of an integrated circuit and configured as a driving circuit.

[0058] The second substrate 213 may be an upper substrate or a color filter array substrate. For example, the second substrate 213 may include a pixel definition pattern including an opening region overlapping each pixel region formed in the first substrate 211, and a color filter layer formed in the opening region. The second substrate 213 may have a size smaller than that of the first substrate 211, but is not limited thereto. For example, the second substrate 213 may overlap with a remaining portion of the first substrate 211 except for a first edge. The second substrate 213 may be bonded to the remaining portion of the first substrate 211 except for a first edge, sandwiching a liquid crystal layer therebetween by a sealant.

[0059] The liquid crystal layer may be disposed between the first substrate 211 and the second substrate 213. For example, the liquid crystal layer may be made of liquid crystal in which the alignment direction of liquid crystal molecules is changed by an electric field formed by a data voltage and a common voltage applied to a pixel electrode of each pixel.

[0060] The first polarizing member 215 is attached to the rear surface of the first substrate 211 and can polarize light incident from the backlight 230 and proceeding to the liquid crystal layer. The second polarizing member 217 is attached to the upper surface of the second substrate 213 and can polarize the light incident through the second substrate 213 and emit it to the front surface of the device.

[0061] The display panel 210 according to the embodiment of the present specification can display an image by light passing through the liquid crystal layer by driving the liquid crystal layer with an electric field formed in each pixel by a data voltage and a common voltage applied to each pixel.

[0062] The display panel 210 according to the embodiment of the present specification may further include a touch electrode layer for sensing a touch on the front member 100, for example, a touch by a user.

[0063] The touch electrode layer may include a plurality of touch electrodes for sensing a touch, for example, a touch by a user. The plurality of touch electrodes may act as a touch sensor for sensing a touch based on a mutual capacitance type or a self-capacitance type. For example, the touch electrode layer may be realized as a touch panel including a plurality of touch electrodes. For example, the touch panel may be an add-on type touch panel or an in-cell type touch panel.

[0064] In the display panel 210 according to another embodiment of the present specification, the first substrate 211 may be a color filter array substrate, and the second substrate 213 may be a thin film transistor array substrate. For example, the display panel 210 according to another embodiment of the present specification may have a shape obtained by inverting the display panel 210 according to the embodiment of the present specification. In this case, the pad portion of the display panel 210 according to the other embodiment of the present specification may be covered by a separate mechanism.

[0065] The display panel 210 according to other embodiments of the present disclosure may include a curved shape or a bent portion that is bent or curved to have a certain radius of curvature.

[0066] The bent portion of the display panel 210 may be realized on at least one of an edge portion on one side and an edge portion on the other side that are parallel to each other in the display panel 210. The edge portion on one side and / or the edge portion on the other side of the display panel 210 where the bent portion is realized may include only the non-display area, or may include the edge portion of the display area and the non-display area. The display panel 210 including the bent portion realized by bending the non-display area may have a one-sided bezel bent structure or a two-sided bezel bent structure. And, the display panel 210 including the bent portion realized by bending the edge portion of the display area and the non-display area may have a one-sided active bent structure or a two-sided active bent structure.

[0067] The backlight 230 is disposed on the rear surface of the display panel 210 and irradiates light onto the rear surface of the display panel 210. For example, the backlight 230 may be disposed between the display panel 210 and the first cover 400 and supported by the first cover 400.

[0068] The backlight 230 according to the embodiment of the present specification may include a light guide plate 231, a light source unit 233, a reflective sheet 235, and an optical sheet unit 237, but the configuration of the backlight 230 is not limited thereto. do.

[0069] The light guide plate 231 is disposed on the first cover 400 so as to overlap with the display panel 210, and may include a light incident surface provided on at least one side. For example, the light guide plate 231 may include a light-transmitting plastic or glass material. The light guide plate 231 may cause light incident from the light source unit 233 through the light incident surface to travel (or exit) toward the display panel 210. For example, the light guide plate 231 may be expressed as a light guide member or a flat light source, but is not limited thereto.

[0070] The light source unit 233 may irradiate light to a light incident surface provided on the light guide plate 231. For example, the light source unit 233 may be disposed on one side of the light guide plate 231 so as to overlap with a first edge of the display panel 210. For example, the light source unit 233 may be disposed between the guide member 300 and the first cover 400. For example, the light source unit 233 may be disposed between the support part 310 of the guide member 300 and the first cover 400. For example, the light source unit 233 may include a plurality of light emitting diode elements mounted on a light source printed circuit board to irradiate light to the light incident surface of the light guide plate 231. For example, the guide member 300 may be, but is not limited to, a panel guide or a guide panel.

[0071] The reflective sheet 235 may be disposed on the rear surface of the light guide plate 231. For example, the reflective sheet 235 may be disposed on the first cover 400 so as to cover the rear surface of the light guide plate 231. The reflective sheet 235 may reflect light incident from the light guide plate 231 toward the light guide plate 231, thereby minimizing light loss.

[0072] The optical sheet unit 237 may be disposed on the front surface of the light guide plate 231. For example, the optical sheet unit 237 may improve the brightness characteristics of the light output from the light guide plate 231. For example, the optical sheet unit 237 may include, but is not limited to, a lower diffusion sheet, a lower prism sheet, and an upper prism sheet. For example, the optical sheet unit 237 may be a combination of one or more layers of a diffusion sheet, a prism sheet, a dual brightness enhancement film, and a lenticular sheet, or may be a single composite sheet having the functions of diffusing and collecting light.

[0073] The display member 200 according to the embodiment of the present specification may further include a driving circuit unit.

[0074] The driving circuit unit is connected to a pad unit provided on a first edge of the display panel 210, and may display an image corresponding to video data supplied from a display host system on each pixel of the display panel 210. For example, the driving circuit unit may be connected to a pad unit provided on a first edge of a first substrate 211 of the display panel 210. For example, the driving circuit unit may sense a touch, for example, a touch by a user, via a plurality of touch electrodes arranged on a touch electrode layer of the display panel 210.

[0075] According to an embodiment of the present specification, the driving circuit unit may be disposed on the first cover 400. For example, the driving circuit unit may extend from a first edge of the display panel 210 along the side and rear surface of the first cover 400. For example, the driving circuit unit may be fixed or coupled to the rear surface of the first cover 400. For example, the driving circuit unit may include at least one flexible circuit film, at least one data driving integrated circuit, a printed circuit board, a control circuit, and a connector, and the configuration of the driving circuit unit is not limited thereto. The connector may be, but is not limited to, a user connector.

[0076] Each of the at least one flexible circuit film may be attached to a pad portion provided on a first edge of the first substrate 211 of the display panel 210 by a film attachment process. The at least one flexible circuit film is bent to cover at least one side (or a first side) of the display panel 210 and the backlight 230, and is connected to the printed circuit board at one edge of the rear surface (or a first rear edge) of the first cover 400.

[0077] At least one data driving integrated circuit is individually mounted on at least one flexible circuit film. The data driving integrated circuit receives pixel data and a data control signal provided from the control circuit, converts the pixel data into an analog data signal for each pixel according to the data control signal, and supplies the analog data signal to a corresponding data line. Alternatively, each of the at least one data driving integrated circuit can be directly mounted on a first edge of the first substrate 211 by a chip bonding process and connected to a plurality of data lines, in which case at least one flexible circuit film can be omitted.

[0078] The printed circuit board may be commonly connected to at least one flexible circuit film. For example, the printed circuit board may be connected to the display panel 210 via at least one flexible circuit film. For example, the printed circuit board may be electrically connected to the other side of each of the at least one flexible circuit film by a film attachment process using an anisotropic conductive film, and may be disposed on an edge of the first rear surface of the first cover 400 by bending each of the at least one flexible circuit film.

[0079] The control circuit may be disposed (or implemented) on a printed circuit board. For example, the control circuit may receive timing synchronization signals and video data provided from a display host system via a connector. For example, the timing synchronization signals may include, but are not limited to, a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a main clock signal.

[0080] The control circuit can generate a gate control signal for controlling the driving timing of the gate driving circuit and a data control signal for controlling the driving timing of at least one data driving integrated circuit based on the timing synchronization signal. For example, the gate control signal can include at least one gate start signal, a plurality of gate shift clocks, etc. The data control signal can include a source start signal, a source shift clock, and a source output enable signal, etc.

[0081] The connector can receive various signals, including audio signals, from a display host system and provide the received signals to the control circuitry.

[0082] According to an embodiment of the present disclosure, the driving circuit unit may further include a touch driving circuit connected to the touch electrode layer of the display panel 210.

[0083] The touch driving circuit senses a user's touch through each of a plurality of touch electrodes arranged in the touch electrode layer, generates touch raw data, and provides touch, for example, coordinate information of a touch by a user, to a display host system based on the generated touch raw data.

[0084] The display host system (or host system) may include a main board, various circuits mounted on a mother board, various storage media, peripheral devices, a keyboard, a power supply, and the like. The various circuits mounted on the mother board may include a central control circuit for processing various information, an image processing circuit for processing data under the control of the central control circuit, and an audio processing circuit for processing audio under the control of the central control circuit. The display host system processes various information, generates timing synchronization signals and video data to provide them to the control circuit, and generates driving signals including audio signals or haptic feedback signals to provide them to the control circuit. For example, the audio signal may be synchronized with the video data or may not be synchronized with the video data.

[0085] The display host system may execute an application program associated with touch coordinates corresponding to the coordinate information of a user's touch provided from the touch driving circuit, or may realize a user interface based on the touch input. The display host system may also generate a driving signal including a haptic feedback signal corresponding to the touch provided from the touch driving circuit, for example, the coordinate information of a user's touch.

[0086] The guide member 300 according to the embodiment of the present specification may be disposed between the display panel 210 and the backlight 230. For example, the guide member 300 may be disposed between the rear edge portion (EP) of the display panel 210 and the front edge portion of the backlight 230. For example, the guide member 300 may support the rear edge portion (EP) of the display panel 210. For example, the guide member 300 may cover at least one of the front edge portion and the side surface of the backlight 230. For example, the guide member 300 may cover and support the side surface of the first cover 400.

[0087] According to an embodiment of the present specification, the guide member 300 can maintain a distance between the display panel 210 and the backlight 230 and provide a sound transmission space (STS) between the display panel 210 and the backlight 230.

[0088] According to an embodiment of the present specification, the guide member 300 may have a rectangular shape (or a rectangular frame shape) having an opening that overlaps with the remaining middle portion (CP) excluding the edge portion (EP) of the rear surface of the display panel 210. The configuration of the guide member 300 is not limited thereto.

[0089] According to the embodiment of the present specification, the guide member 300 has a rectangular frame shape having an opening, and thus the guide member 300 provides a sound transmission space (STS) between the rearmost surface of the display panel 210 and the uppermost surface of the backlight 230, which face each other across the opening, thereby preventing or minimizing leakage (or loss) of sound pressure transmitted to the sound transmission space (STS). The sound transmission space (STS) may be a sound pressure generation space generated by vibration of the backlight 230 and / or a panel vibration space that smooths vibration of the display panel 210 due to sound pressure.

[0090] 3 and 4, the second connecting member 350 according to the embodiment of the present specification may be disposed between the edge portion (EP) of the rear surface of the display panel 210 and the guide member 300. The third connecting member 370 may be disposed between the edge portion of the front surface of the backlight 230 and the guide member 300.

[0091] According to an embodiment of the present specification, the guide member 300 may be disposed or located at an edge portion (EP) of the rear surface of the display panel 210 via the second connecting member 350. For example, the guide member 300 may be disposed or located at an edge portion of the front surface of the backlight 230 via the third connecting member 370.

[0092] According to the embodiment of the present specification, a front surface of the second connecting member 350 is disposed or connected to an edge portion (EP) of a rear surface of the first substrate 211 of the display panel 210, and a rear surface of the second connecting member 350 is disposed or connected to a front surface of the guide member 300, thereby connecting the display panel 210 and the guide member 300 to the second connecting member 350. Thus, the display panel 210 can be fixed or connected to the guide member 300 via the second connecting member 350.

[0093] The second connecting member 350 is disposed on the edge portion (EP) of the rear surface of the first substrate 211 and surrounds the side surface of the first polarizing member 215, thereby preventing side light leakage that occurs in the first polarizing member 215. The second connecting member 350 can provide a sound transmission space (STS) between the display panel 210 and the guide member 300. For example, the sound transmission space (STS) can be formed in a four-sided closed type or a closed loop shape by the guide member 300 and / or the second connecting member 350, but is not limited thereto.

[0094] According to the embodiment of the present specification, a front surface of the third connecting member 370 is disposed on or connected to a rear surface of the guide member 300. A rear surface of the third connecting member 370 is disposed on or connected to a front surface of the backlight 230, so that the guide member 300 and the backlight 230 may be connected to the third connecting member 370. In this way, the backlight 230 may be fixed or connected to the guide member 300 via the third connecting member 370.

[0095] According to an embodiment of the present specification, the guide member 300 may further include a groove 390 into which the third connecting member 370 is inserted (or housed), and the third connecting member 370 may be inserted (or housed) in the groove 390. For example, the groove 390 may be formed on the rear surface of the guide member 300 overlapping the front surface of the backlight 230. For example, the third connecting member 370 may have a thickness (or height) that can connect the backlight 230 and the guide member 300 even when inserted (or housed) in the groove 390. For example, the third connecting member 370 may have a thickness (or height) that is equal to or greater than the thickness (or height) of the groove 390 within an error range. According to an embodiment of the present specification, since the third connecting member 370 is inserted or housed in the groove 390, the thickness of the device due to the third connecting member 370 may be reduced or minimized. In addition, when setting the height of the sound transmission space (STS), the thickness (or height) of the third connecting member 370 can be excluded, so the height of the sound transmission space (STS) can be set to the total thickness or total height of the guide member 300 and the second connecting member 350. This makes it possible to control the height of the sound transmission space (STS), so that a device capable of outputting a desired sound can be provided.

[0096] According to an embodiment of the present specification, the second and third connecting members 350, 370 may include, but are not limited to, an acrylic or urethane adhesive member. For example, the second and third connecting members 350, 370 may include an acrylic adhesive member having relatively excellent adhesive strength and high hardness properties so that the vibration of the guide member 300 can be well transmitted to the display panel 210. For example, the second and third connecting members 350, 370 may include a double-sided foam adhesive pad or a double-sided foam adhesive pad having an acrylic adhesive layer, or may include an acrylic adhesive resin hardened layer. However, the embodiment of the present specification is not limited to such examples.

[0097] According to the embodiment of the present specification, the guide member 300 may be made of a plastic material, a metal material, or a mixture of a plastic material and a metal material, but the material of the guide member 300 is not limited thereto. For example, the guide member 300 may act as a vibration transmission member that transmits the vibration generated by the vibration device 500 to the edge portion (EP) of the display panel 210. Therefore, the guide member 300 can transmit the vibration generated by the vibration device 500 from the guide member 300 to the display panel 210 without loss while maintaining the rigidity of the display panel 210. For example, the guide member 300 may include a metal material in order to transmit the vibration generated by the vibration device 500 to the display panel 210 while maintaining the rigidity of the display panel 210, but is not limited thereto.

[0098] The guide member 300 according to the embodiment of the present specification may include a support portion 310 and a side portion 330. For example, the guide member 300 may have a cross-sectional structure having a square or a square shape depending on the coupling structure of the support portion 310 and the side portion 330.

[0099] The support unit 310 according to the embodiment of the present specification may be disposed between the display panel 210 and the backlight 230. For example, the support unit 310 may be disposed between the rear edge portion (EP) of the display panel 210 and the front edge portion of the backlight 230, and may support the rear edge portion (EP) of the display panel 210.

[0100] According to an embodiment of the present specification, the supporter 310 may maintain a distance between the display panel 210 and the backlight 230. For example, the supporter 310 may provide a sound transmission space (STS) between the display panel 210 and the backlight 230. For example, the supporter 310 may have a rectangular shape (or a rectangular frame shape) having an opening that overlaps with a remaining middle portion (CP) excluding an edge portion (EP) of the rear surface of the display panel 210, but the configuration of the supporter 310 is not limited thereto.

[0101] According to the embodiment of the present specification, the second connecting member 350 may be disposed on the front surface of the support portion 310. The third connecting member 370 may be disposed on the rear surface of the support portion 310. For example, the groove 390 may be disposed on the rear surface of the support portion 310.

[0102] The side portion 330 according to the embodiment of the present specification may be connected to the support portion 310 and cover a side surface of the backlight 230. For example, the side portion 330 may cover a side surface of the first cover 400. For example, the side portion 330 may be bent from the support portion 310 toward a side surface of the first cover 400 to cover and support the side surface of the first cover 400.

[0103] The first cover 400 according to the embodiment of the present specification may be configured to support the display member 200 and cover the back surface of the display member 200. For example, the first cover 400 may be configured to support the vibration device 500. The first cover 400 may function as a vibration plate and may include a metal material or a metal alloy material. For example, the first cover 400 may be made of any one or more materials selected from the group consisting of aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy, but is not limited thereto.

[0104] The first cover 400 may include a rear portion 410 and a side portion 430. The rear portion 410 may support the rear surface of the display member 200. The side portion 430 may be connected to an edge portion of the rear portion 410 and cover the side surface of the display member 200, but the configuration of the first cover 400 is not limited thereto.

[0105] The rear part 410 is disposed so as to cover the rear surface of the display member 200, and can support the display member 200. For example, the rear part 410 can be formed of a plate-like structure. For example, the rear part 410 can support the backlight 230 of the display member 200 and support the vibration device 500. For example, the rear part 410 can be in direct contact with the rear surface of the backlight 230. For example, the rear part 410 can be in direct contact with the rear surface of the reflective sheet 235 of the backlight 230. For example, the rear part 410 can transmit vibrations generated by vibrations of the vibration device 500 to the backlight 230 by directly contacting the rear surface of the backlight 230.

[0106] The back portion 410 (or the first cover 400) may include a middle area (or first cover area) (MA) and an edge area (or second cover area) (EA). For example, the middle area (or first cover area) (MA) of the back portion 410 (or the first cover 400) may correspond to (or overlap with) the middle portion (CP) of the display member 200. For example, the edge area (or second cover area) (EA) of the back portion 410 (or the first cover 400) may correspond to (or overlap with) the edge portion (EP) of the display member 200.

[0107] The middle area (MA) of the rear part 410 (or the first cover 400) may include a first middle area (or a left middle area) (MA1) and a second middle area (or a right middle area) (MA2). For example, the first middle area (or a left middle area) (MA1) of the rear part 410 (or the first cover 400) may correspond to (or overlap with) the first middle portion (C1) of the display member 200. For example, the second middle area (or a right middle area) (MA2) of the rear part 410 (or the first cover 400) may correspond to (or overlap with) the second middle portion (C2) of the display member 200.

[0108] The edge region (EA) of the back portion 410 (or the first cover 400) may include a first edge region (or left edge region) (EA1) and a second edge region (or right edge region) (EA2). For example, the first edge region (or left edge region) (EA1) of the back portion 410 (or the first cover 400) may correspond to (or overlap with) the first edge portion (EP1) of the display member 200. For example, the second edge region (or right edge region) (EA2) of the back portion 410 (or the first cover 400) may correspond to (or overlap with) the second edge portion (EP2) of the display member 200.

[0109] According to an embodiment of the present specification, the first middle area (MA1) and the first edge area (EA1) may constitute a first area (or left area) (A1) of the rear part 410 (or the first cover 400). For example, the second middle area (MA2) and the second edge area (EA2) may constitute a second area (or right area) (A2) of the rear part 410 (or the first cover 400). For example, the first area (A1) may correspond to (or overlap with) the first portion (P1) of the display member 200, and the second area (A2) may correspond to (or overlap with) the second portion (P2) of the display member 200.

[0110] The side portion 430 may be disposed between the backlight 230 and the guide member 300. For example, the side portion 430 may be disposed between a side surface of the backlight 230 and the side portion 330 of the guide member 300.

[0111] According to an embodiment of the present specification, the side portion 430 may be connected to the backlight 230 via a fourth connecting member 430a. For example, the fourth connecting member 430a may be disposed between the side portion 430 and a side of the backlight 230. For example, the side portion 430 may be connected to the guide member 300 via a fifth connecting member 430b. For example, the fifth connecting member 430b may be disposed between the side portion 430 of the first cover 400 and the side portion 330 of the guide member 300.

[0112] According to an embodiment of the present specification, the fourth connecting member 430a and the fifth connecting member 430b may include, but are not limited to, an acrylic or urethane adhesive material. For example, the fourth connecting member 430a and the fifth connecting member 430b may include an acrylic adhesive material having relatively excellent adhesive strength and high hardness properties so that the vibration of the guide member 300 can be efficiently transmitted to the display panel 210.

[0113] 2 to 4, the first cover 400 according to the embodiment of the present specification may further include a first hole 411. For example, the first hole 411 may be disposed in a rear portion 410 of the first cover 400.

[0114] The first holes 411 are disposed in the first cover 400 overlapping the vibration device 500, and the back surface of the backlight 230 may be exposed through the first holes 411. For example, the first holes 411 may secure a vibration space of the first cover 400 through which sound generated by the vibration of the vibration device 500 passes toward the front surface of the device. For example, the reflective sheet 235 of the backlight 230 may be exposed toward the back surface of the first cover 400 through the first holes 411. For example, the first holes 411 may be disposed in each of the first area (A1) and the second area (A2) of the rear portion 410. For example, the first holes 411 may include a 1-1 hole 411-1 disposed in the first area (A1) and a 1-2 hole 411-2 disposed in the second area (A2). The 1-1 hole 411-1 and the 1-2 hole 411-2 in the embodiment of this specification may be the first hole and the second hole, but this number is not intended to limit the contents of this specification.

[0115] According to embodiments herein, the 1-1 holes 411-1 in or through the first cover 400 may be disposed in the first middle area (MA1) or the first edge area (EA1), or may be disposed across the first middle area (MA1) and the first edge area (EA1). For example, the 1-2 holes 411-2 in or through the first cover 400 may be disposed in the second middle area (MA2) or the second edge area (EA2), or may be disposed in the second middle area (MA2) and the second edge area (EA2).

[0116] The first hole 411 may provide a first gap space between the display member 200 and the vibration device 500. For example, the first hole 411 may provide a first gap space between the backlight 230 of the display member 200 and the vibration device 500. For example, the first hole 411 may provide a first gap space between the reflection sheet 235 of the backlight 230 and the vibration device 500. For example, the first gap space may be a vibration space caused by driving the vibration device 500, a sound pressure space (or a resonating part) where sound pressure is generated by the vibration of the vibration device 500, or a sound wave propagation path (or a sound energy incident part) where sound waves generated according to the vibration of the vibration device 500 are directly propagated to the display member 200, but is not limited thereto.

[0117] The size (or width) of the first hole 411 according to the embodiment of the present specification may be smaller than the size (or width) of the vibration device 500. If the overall size (or width) of the first hole 411 is larger than the overall size of the vibration device 500, the vibration device 500 cannot be disposed on the rear part 410 without using a separate tool by being inserted (or accommodated) in the first hole 411. Therefore, if the overall size (or width) of the first hole 411 is smaller than the overall size of the vibration device 500, the vibration device 500 can be disposed or positioned on the rear part 410 so as to overlap with the first hole 411 without a separate tool. For example, the first hole 411 according to the embodiment of the present specification may have the same shape as the vibration device 500, or may have a square or circular shape, but is not limited thereto.

[0118] 3 and 4, the first cover 400 according to the embodiment of the present specification may further include a reinforcing portion 450. The reinforcing portion 450 may increase or reinforce the rigidity of the first cover 400. For example, the reinforcing portion 450 may protrude rearward from the rear portion 410 to a certain height, thereby increasing or reinforcing the rigidity of the first cover 400. For example, the reinforcing portion 450 may be a forming portion of the first cover 400.

[0119] According to an embodiment of the present specification, the reinforcing portion 450 may be formed along an edge area (EA) of the rear portion 410. For example, the reinforcing portion 450 may be formed in an area where the rear portion 410 and the side portion 430 are connected. For example, the reinforcing portion 450 may protrude in a rear direction from the rear surface of the rear portion 410 so as to have an inclined surface inclined from an end or one side of the rear portion 410, and the side portion 430 may be connected to an end or one side of the reinforcing portion 450.

[0120] According to an embodiment of the present specification, the reinforcing portion 450 may include a first reinforcing portion (or inclined surface) 451 and a second reinforcing portion (or flat surface) 453. For example, the first reinforcing portion (or inclined surface) 451 may be disposed (or extended) so as to be inclined from an end or one side of the back portion 410 toward the back direction. For example, the second reinforcing portion (or flat surface) 453 may be disposed (or extended) horizontally in a first direction (X) from an end or one side of the first reinforcing portion 451 toward the side portion 430. For example, an end or one side of the second reinforcing portion 453 may be connected to the side portion 430.

[0121] The vibration device 500 is disposed on the rear surface of the first cover 400 and can vibrate the display member 200. For example, the vibration device 500 may be supported by the first cover 400. For example, the vibration device 500 may be disposed on the rear surface 410 of the first cover 400 so as to cover the first hole 411 disposed on the rear surface 410.

[0122] The vibration device 500 according to the embodiment of the present specification may be a film-type vibration device. For example, the vibration device 500 may be expressed as a piezoelectric element, a flexible sound generator, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, 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 thereto.

[0123] According to an embodiment of the present specification, the vibration device 500 vibrates in response to a drive signal including an acoustic signal and / or a haptic feedback signal, and can vibrate the display member 200 to generate sound (S) due to the vibration of the display member 200, or generate haptic feedback (or haptic vibration) in response to a touch, e.g., a touch by a user.

[0124] According to an embodiment of the present specification, the vibration device 500 may vibrate the first portion (P1) of the display member 200 to generate a first sound (S1) in a first range band due to the vibration of the first portion (P1), or may generate a first haptic feedback (or haptic vibration) in response to a touch, for example, a touch by a user. For example, the vibration device 500 may vibrate the second portion (P2) of the display member 200 to generate a second sound (S2) in a second range band due to the vibration of the second portion (P2), or may generate a second haptic feedback (or haptic vibration) in response to a touch.

[0125] A vibration device 500 according to embodiments of the present disclosure may include multiple vibration devices, such as, but not limited to, a first vibration device 510 and a second vibration device 530 .

[0126] The first vibration device 510 may include at least one or more first-first vibration devices. For example, the first vibration device 510 may include one first-first vibration device 510-1. The first-first vibration device 510-1 according to the embodiment of the present specification may be substantially identical to the first vibration device 510.

[0127] The second vibration device 530 may include at least one or more 2-1 vibration devices. For example, the second vibration device 530 may include one 2-1 vibration device 530-1. The 2-1 vibration device 530-1 according to the embodiment of the present specification may be substantially identical to the second vibration device 530. The 1-1 vibration device 510-1, the 1-2 vibration device 510-2, the 2-1 vibration device 530-1, and the 2-2 vibration device 530-2 according to the embodiment of the present specification may be the first vibration device, the second vibration device, the third vibration device, and the fourth vibration device, respectively, but this number is not intended to limit the contents of the present specification.

[0128] According to an embodiment of the present specification, each of the first-first vibration device 510-1 and the second-first vibration device 530-1 may include plates 511, 531 and vibration generators 513, 533. The configuration of each of the first-first vibration device 510-1 and the second-first vibration device 530-1 is not limited thereto. In the plates 511 and 531 of the embodiment of the present specification, the plate 511 may be a first plate and the plate 531 may be a second plate, but this number does not limit the contents of the present specification.

[0129] The first vibration device 510 is disposed in the first area (A1) of the first cover 400 (or the rear part 410) and can cover the 1-1 hole 411-1 disposed in the first area (A1).

[0130] The first vibrating device 510 can vibrate the first region (A1) of the first cover 400 and vibrate the first portion (P1) of the display member 200 by a first driving signal including an audio signal and / or a haptic feedback signal, thereby generating a first sound (S1) in a first sound range band due to the vibration of the first portion (P1) of the display member 200, or generating a first haptic feedback (or haptic vibration) in response to a touch, for example, a touch by a user. For example, the first vibrating device 510 can vibrate the first region (A1) of the first cover 400 and directly vibrate the first portion (P1) of the display member 200, thereby generating a first sound (S1) in a first sound range band or generating a first haptic feedback (or haptic vibration) in response to a touch.

[0131] The first vibration device 510 according to an embodiment of the present specification vibrates a first area (A1) of the first cover 400 in response to a first drive signal, thereby generating sound pressure inside (or a first gap space) of the 1-1 hole 411-1 in or passing through the first cover 400, thereby vibrating a first portion (P1) of the display member 200 to generate a first sound (S1) in a first sound range or to generate a first haptic feedback.

[0132] According to the embodiment of the present specification, when the first vibrating device 510 vibrates according to the first driving signal, the vibration of the first area (A1) of the first cover 400 due to the vibration of the first vibrating device 510 can generate sound pressure inside the 1-1 hole 411-1. The vibration of the backlight 230 due to this sound pressure generates sound pressure in the sound transmission space (STS), and the vibration of the first part (P1) of the display panel 210 due to the sound pressure generated in the sound transmission space (STS) can output a first sound (S1) of a first sound range to the front (FD) of the display panel 210 or generate a first haptic feedback. For example, the sound wave generated by the vibration of the first vibrating device 510 can be transmitted (or propagated) to the display member 200 via the 1-1 hole 411-1 to improve the sound pressure characteristics and / or sound quality of the first sound (S1). According to an embodiment of the present specification, sound waves generated by vibration of the first vibrating device 510 can be directly transmitted (or propagated) to the display member 200 through the 1-1 hole 411-1, thereby improving the sound pressure characteristics and / or sound quality of the first sound (S1).

[0133] The second vibrating device 530 can vibrate the second region (A2) of the first cover 400 by a second driving signal including an audio signal and / or a haptic feedback signal, thereby generating a second sound (S2) in a second range band by the vibration of the second portion (P2) of the display member 200, or can generate a second haptic feedback (or haptic vibration) in response to a touch, for example, a touch by a user, by vibrating the second region (A2) of the first cover 400 and directly vibrating the second portion (P2) of the display member 200. For example, the second vibrating device 530 can vibrate the second region (A2) of the first cover 400 and directly vibrate the second portion (P2) of the display member 200, thereby generating a second sound (S2) in a second range band or generating a second haptic feedback (or haptic vibration) in response to a touch.

[0134] The second vibration device 530 according to an embodiment of the present specification can vibrate the second area (A2) of the first cover 400 in response to a second drive signal to generate sound pressure inside (or the first gap space) of the 1-2 hole 411-2 in or passing through the first cover 400, thereby vibrating the second portion (P2) of the display member 200 to generate a second sound (S2) in a second sound range band or generate a second haptic feedback.

[0135] According to the embodiment of the present specification, when the second vibrating device 530 vibrates by the second driving signal, the vibration of the second area (A2) of the first cover 400 due to the vibration of the second vibrating device 530 can generate sound pressure inside the 1-2 hole 411-2. The vibration of the backlight 230 due to this sound pressure generates sound pressure in the sound transmission space (STS), and the vibration of the second part (P2) of the display panel 210 due to the sound pressure generated in the sound transmission space (STS) can output a second sound (S2) in a second sound range to the front (FD) of the display panel 210 or generate a second haptic feedback. For example, the sound wave generated by the vibration of the second vibrating device 530 can be transmitted (or propagated) to the display member 200 via the 1-2 hole 411-2, thereby improving the sound pressure characteristics and / or sound quality of the second sound (S2). According to an embodiment of the present specification, the sound waves generated by the vibration of the second vibrating device 530 can be directly transmitted (or propagated) to the display member 200 through the 1-2 hole 411-2, thereby improving the sound pressure characteristics and / or sound quality of the second sound (S2).

[0136] The plates 511 and 531 according to the embodiment of the present specification may be disposed on the rear part 410 of the first cover 400 via the sixth connecting members 515 and 535, respectively. For example, the plates 511 and 531 may cover the first holes 411-1 and 411-2 that are in or pass through the rear part 410 of the first cover 400, respectively. For example, the plates 511 and 531 may have a larger size (or a larger width) than the first holes 411-1 and 411-2, respectively. In the sixth connecting members 515 and 535 according to the embodiment of the present specification, the sixth connecting member 515 may be the sixth connecting member, and the sixth connecting member 535 may be the seventh connecting member, but this number is not intended to limit the contents of the present specification.

[0137] According to an embodiment of the present specification, the plate (or first plate) 511 of the 1-1 vibration device 510-1 may be disposed on the rear part 410 of the first cover 400. For example, the plate (or first plate) 511 of the 1-1 vibration device 510-1 may be disposed on the rear part 410 of the first cover 400 via the 6-1 connection member 515. For example, the plate (or first plate) 511 of the 1-1 vibration device 510-1 may cover the 1-1 hole 411-1 of the rear part 410. For example, the size of the plate (or first plate) 511 of the 1-1 vibration device 510-1 may be the same as or larger than the size of the vibration generator 513.

[0138] According to an embodiment of the present specification, the plate (or second plate) 531 of the 2-1 vibration device 530-1 may be disposed on the rear part 410 of the first cover 400. For example, the plate (or second plate) 531 of the 2-1 vibration device 530-1 may be disposed on the rear part 410 of the first cover 400 via the 6-2 connection member 535. For example, the plate (or second plate) 531 of the 2-1 vibration device 530-1 may cover the 1-2 hole 411-2 of the rear part 410. For example, the size of the plate (or second plate) 531 of the 2-1 vibration device 530-1 may be the same as or larger than the size of the vibration generator 533.

[0139] The plate (or first plate) 511 may be a diaphragm that generates sound pressure inside the 1-1 hole 411-1 of the rear part 410 of the first cover 400. The plate (or second plate) 531 may be a diaphragm that generates sound pressure inside the 1-2 hole 411-2 of the rear part 410. The plates 511 and 531 according to the embodiments of the present specification may be made of one or more metal materials selected from the group consisting of stainless steel, aluminum (Al), magnesium (Mg), magnesium (Mg) alloy, magnesium lithium (Li) alloy, and aluminum (Al) alloy, but are not limited thereto.

[0140] The 6-1 connecting member 515 is disposed between the rear part 410 and the plate 511 around the 1-1 hole 411-1, and can connect (or fix) the vibration generator 513 to the rear part 410. The 6-1 connecting member 515 can include a double-sided tape or a double-sided foam tape having an adhesive layer. The adhesive layer of the 6-1 connecting member 515 according to the embodiment of the present specification can include an acrylic-based or urethane-based adhesive material. For example, the adhesive layer of the 6-1 connecting member 515 can include a urethane-based adhesive material having a relatively soft characteristic, rather than an acrylic-based adhesive material having a relatively hard characteristic, in order to minimize the transmission of vibration of the vibration generator 513 to the rear part 410, but is not limited thereto.

[0141] The 6-2 connecting member 535 may be disposed between the rear part 410 and the plate 531 around the 1-2 hole 411-2. Thus, the 6-2 connecting member 535 can connect the vibration generator 533 to the rear part 410. The 6-2 connecting member 535 may include a double-sided tape or a double-sided foam tape having an adhesive layer. The adhesive layer of the 6-2 connecting member 535 according to the embodiment of the present specification may include an acrylic-based or urethane-based adhesive material. For example, the adhesive layer of the 6-2 connecting member 535 may include a urethane-based adhesive material having a relatively soft characteristic, rather than an acrylic-based adhesive material having a relatively hard characteristic, in order to minimize the transmission of vibration of the vibration generator 533 to the rear part 410, but is not limited thereto.

[0142] The vibration generators 513, 533 may be disposed on the rear surfaces of the plates 511, 531. The vibration generators 513, 533 may be disposed on the plates 511, 531 and may vibrate the plates 511, 531. The vibration generators 513, 533 may overlap the first holes 411-1, 411-2 of the rear surface portion 410. For example, the vibration generators 513, 533 may be disposed on the rear surfaces of the plates 511, 531 so as to overlap the first holes 411-1, 411-2 of the rear surface portion 410. For example, the vibration generators 513, 533 may be disposed on the plates 511, 531 via the seventh connecting members 517, 537. In the seventh connecting members 517, 537 of the embodiments of this specification, the seventh connecting member 517 may be the eighth connecting member and the seventh connecting member 537 may be the ninth connecting member, but this number is not intended to limit the content of this specification.

[0143] According to an embodiment of the present specification, the vibration generator (or the first vibration generator) 513 of the 1-1 vibration device 510-1 may be disposed on the rear surface of the first plate 511. For example, the vibration generator (or the first vibration generator) 513 of the 1-1 vibration device 510-1 may be disposed on the rear surface of the first plate 511 via the 7-1 connection member 517. For example, the vibration generator (or the first vibration generator) 513 of the 1-1 vibration device 510-1 may overlap with the 1-1 hole 411-1 of the rear portion 410 of the first cover 400. According to an embodiment of the present specification, the vibration generator (or the second vibration generator) 533 of the 2-1 vibration device 530-1 may be disposed on the rear surface of the second plate 531. For example, the vibration generator (or the second vibration generator) 533 of the 2-1 vibration device 530-1 may be disposed on the back surface of the second plate 531 via the 7-2 connection member 537. For example, the vibration generator (or the second vibration generator) 533 of the 2-1 vibration device 530-1 may overlap the 1-2 hole 411-2 of the back surface portion 410.

[0144] According to an embodiment of the present specification, the second cover 700 may be disposed on the rear surface of the first cover 400. The second cover 700 may house (or accommodate) the display member 200 on which one or more vibration devices 500 are disposed (or coupled), and may cover the rear surface of the first cover 400, the side surface of the first cover 400, and the side surface of the display member 200. For example, the second cover 700 may be expressed as a set cover, a rear set cover, an outermost cover, an outermost set cover, a product cover, an outermost product cover, or the like, but is not limited thereto.

[0145] The second cover 700 according to the embodiment of the present specification may include a rear structure 710 and a side structure 730. The rear structure 710 may be an outermost rear structure located on the rear side of the device. For example, the rear structure 710 may support the display member 200 on which one or more vibration devices 500 are arranged, and cover the rear side of the display member 200.

[0146] The side structure 730 may be the outermost side structure located on the side of the device. For example, the side structure 730 may be connected to an end of the rear structure 710 and cover at least one of the rear surface of the first cover 400, the side surface of the second cover 700, and the side surface of the display member 200.

[0147] 2, the second cover 700 according to the embodiment of the present specification may further include a cover box 750. For example, the cover box 750 may entirely house (or accommodate) the vibration device 500, and may be embodied in the rear structure 710 to entirely cover the vibration device 500.

[0148] For example, the cover box 750 can improve the characteristics of the sound generated by the vibration device 500 by providing an enclosed space between the rear part 410 of the first cover 400 and the rear structure 710. For example, the enclosed space provided by the cover box 750 can be used as a space for a resonance effect, and the sound pressure generated by the vibration device 500 can be amplified by the resonance effect inside the cover box 750. For example, the cover box 750 can be expressed as an acoustic box, a sound body, a resonance part, or the like, but is not limited thereto.

[0149] According to an embodiment of the present specification, the device may include a first member 600. For example, the first member 600 may be disposed on the rear surface of the first cover 400. For example, the first member 600 may be disposed on the rear surface of the first cover 400 via the eighth connecting member 650. For example, the first member 600 may be disposed between the first cover 400 and the second cover 700. For example, the first member 600 may be disposed so as to cover the entire vibrating device 500. For example, the first member 600 may cover the first hole 411 disposed in the first cover 400. For example, the first member 600 may acoustically seal or separate the space in which the vibrating device 500 is disposed. For example, the first member 600 may acoustically seal or separate the space in which the first vibrating device 510 is disposed and the space in which the second vibrating device 530 is disposed. The first member 600 can prevent or reduce the deterioration of acoustic characteristics by preventing or reducing interference between the sound generated in the space in which the first vibrating device 510 is arranged and the sound generated in the space in which the second vibrating device 530 is arranged. The first member 600 can be expressed as an enclosure, a rear enclosure, a vibration module box, a vibration module cover, a vibration box, an acoustic box, etc., but is not limited thereto. For example, the first member 600 can be a module frame member or a second member, but can be used in a mixed manner. However, is not limited thereto.

[0150] According to an embodiment of the present specification, the eighth connecting member 650 may include a double-sided tape or a double-sided foam tape having an adhesive layer. The adhesive layer of the eighth connecting member 650 according to an embodiment of the present specification may include an acrylic or urethane adhesive material.

[0151] The first member 600 can include a 1-1 member 610 and a 1-2 member 630. The 1-1 member 610 and the 1-2 member 630 can be disposed on the rear surface of the rear portion 410 of the first cover 400. The 1-1 member 610 in the embodiment of the present specification can be the first member (first enclosure member), and the 1-2 member 630 in the embodiment of the present specification can be the second member (second enclosure member), but this number does not limit the contents of the present specification.

[0152] According to an embodiment of the present specification, the 1-1 member 610 may be disposed in the first area (A1) of the rear portion 410 of the first cover 400, for example, the 1-1 member 610 may cover the first vibration device 510. For example, the 1-1 member 610 may cover the 1-1 hole 411-1 disposed in the rear portion 410 of the first cover 400.

[0153] The 1-1 member 610 according to the embodiment of the present specification may have a square shape covering the first vibration device 510, but is not limited thereto. For example, the 1-1 member 610 may have a shape that is the same as or different from the shape of the first vibration device 510. For example, when the first vibration device 510 has a square shape, the 1-1 member 610 may have a square shape having a relatively larger size (or larger width) than the first vibration device 510, or may have a circular or elliptical shape. However, the embodiment of the present specification is not limited to such an example.

[0154] The 1-1 member 610 can limit (or define) the vibration area (or vibration surface area) of the display member 200 caused by the first vibrating device 510. For example, in the first part (P1) of the display member 200, as the size of the 1-1 member 610 increases, the vibration area of ​​the first part (P1) increases, and the characteristics of the low frequency range of the left sound can be improved. As another embodiment of the present specification, in the first part (P1) of the display member 200, as the size of the 1-1 member 610 decreases, the vibration area of ​​the first part (P1) decreases, and the characteristics of the high frequency range of the left sound can be improved. Therefore, the size of the 1-1 member 610 can be set according to the characteristics of the desired frequency range by the vibration of the display member 200 caused by the vibration of the first vibrating device 510.

[0155] According to an embodiment of the present specification, the 1-2 member 630 may be disposed in the second area (A2) of the rear portion 410 of the first cover 400. For example, the 1-2 member 630 may cover the second vibrating device 530. For example, the 1-2 member 630 may cover the 1-2 hole 411-2 disposed in the rear portion 410 of the first cover 400.

[0156] The 1-2 member 630 according to the embodiment of the present specification may have a square shape covering the second vibration device 530, but is not limited thereto. For example, the 1-2 member 630 may have a shape that is the same as or different from the shape of the second vibration device 530. For example, when the second vibration device 530 has a square shape, the 1-2 member 630 may have a square shape having a relatively larger size (or larger width) than the second vibration device 530, or may have a circular or elliptical shape. However, the embodiment of the present specification is not limited to such an example.

[0157] The 1-2 member 630 according to the embodiment of the present specification may have the same shape as the 1-1 member 610 for symmetry between the left and right sides, and may have a symmetrical structure to the 1-1 member 610 based on the first middle line (CL1) of the display member 200.

[0158] The 1-2 member 630 can limit (or define) the vibration area (or vibration surface area) of the display member 200 by the second vibrating device 530. For example, in the second part (P2) of the display member 200, the larger the size of the 1-2 member 630, the larger the vibration area of ​​the second part (P2) and the lower frequency range characteristics of the right sound can be improved. In another embodiment of the present specification, in the second part (P2) of the display member 200, the smaller the size of the 1-2 member 630, the smaller the vibration area of ​​the second part (P2) and the higher frequency range characteristics of the right sound can be improved. Therefore, the size of the 1-2 member 630 can be set according to the characteristics of the desired frequency range by the vibration of the display member 200 by the vibration of the second vibrating device 530.

[0159] By limiting the vibration region (or vibration area) of the first vibrating device 510 and the second vibrating device 530, the 1-1 member 610 and the 1-2 member 630 can improve the left-right symmetry of the left and right sounds generated by the vibration of the display member 200, and optimize the sound pressure characteristics and / or the reproduction range of the respective left and right sounds.

[0160] According to an embodiment of the present specification, the plates 511, 531, the vibration generators 513, 533, and the first members 610, 630 can configure a vibration generating device. For example, the first plate 511, the first vibration generator 513, and the 1-1 member 610 can configure a first vibration generating device. For example, the second plate 531, the second vibration generator 533, and the 1-2 member 630 can configure a second vibration generating device.

[0161] According to the embodiment of the present specification, by configuring the first member 600, it is possible to control the air impedance of the vibration device 500, and therefore it is possible to provide a device capable of expanding the sound range. Furthermore, the device according to the embodiment of the present specification includes a film-type vibration device, and therefore it is possible to provide a device having improved sound pressure characteristics and / or acoustic characteristics including the high-frequency range, and it is possible to provide a device having a slim structure, since the thickness of the device can be reduced.

[0162] FIG. 5 is an enlarged view of a portion 'B' shown in FIG. 3. FIG. 6 is an enlarged view of a portion 'C' shown in FIG. 3. Referring to FIG. 5 and FIG. 6, the plates 511, 531 may have a second thickness (T2) that is thinner than the first thickness (T1) of the rear part 410. This can improve the sound pressure characteristics and / or sound quality of the first and second vibrating devices 510, 530 in the mid-high range (S). If the second thickness (T2) of the plates 511, 531 is thicker than the first thickness (T1) of the rear part 410, it may be difficult for the vibration of the vibration generators 513, 533 to propagate to the inside of the first holes 411-1, 411-2 of the rear part 410 of the first cover 400. The plates 511, 531 vibrate due to the vibration of the vibration generators 513, 533, and can generate sound (or sound pressure) in the mid-to-high frequency range of 3 kHz or more, which can be propagated inside the first holes 411-1, 411-2.

[0163] According to the embodiment of the present specification, the 1-1 member 610 can independently cover the first vibration device 510 (the 1-1 vibration device 510-1 in FIG. 5) and can cover the 1-1 hole 411-1 arranged in the rear part 410 of the first cover 400. This allows a first air gap (AG1) to be provided inside the 1-1 member 610. For example, the inside of the 1-2 member 630 can include a single space, or can include a space divided into two or more. When the 1-2 member 630 includes two or more divided spaces, the internal space of the device can be utilized. When the 1-2 member 630 includes two or more divided spaces, the two or more spaces can be connected to each other via a pipe. For example, the 1-2 member 630 can be a sealed structure or a structure having an air hole (e.g., a vent structure).

[0164] According to an embodiment of the present specification, the 1-1 member 610 may be disposed on the rear surface of the rear portion 410 of the first cover 400. For example, the 1-1 member 610 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the 8-1 connecting member 651.

[0165] The 1-1 member 610 according to the embodiment of the present specification may include a bottom 611 and a side 613. According to the embodiment of the present specification, the bottom 611 of the 1-1 member 610 may be disposed on the rear surface of the first vibrating device 510 (the 1-1 vibrating device 510-1 in FIG. 5) and cover the rear surface of the first vibrating device 510. For example, the side 613 of the 1-1 member 610 may be disposed on the side surface of the first vibrating device 510 and cover the side surface of the first vibrating device 510. For example, the side 613 may be connected to one side (or end) of the bottom 611 and may be disposed along the edge of the bottom 611. For example, one side (or end) of the side 613 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the 8-1 connecting member 651. For example, the bottom 611 of the 1-1 member 610 may be expressed as a first bottom frame or a first bottom member, but is not limited thereto. For example, the side portion 613 of the 1-1 member 610 may be expressed as a side wall portion, a first side frame, a first side wall frame, a first side wall member, or the like, but is not limited thereto.

[0166] The 1-1 member 610 can limit (or define) the vibration area (or vibration surface area) of the display member 200 caused by the first vibrating device 510. For example, in the first part (P1) of the display member 200, as the size of the 1-1 member 610 increases, the vibration area of ​​the first part (P1) increases, and the characteristics of the low frequency range of the left sound can be improved. As another embodiment of the present specification, in the first part (P1) of the display member 200, as the size of the 1-1 member 610 decreases, the vibration area of ​​the first part (P1) decreases, and the characteristics of the high frequency range of the left sound can be improved. For example, the size of the 1-1 member 610 can be set according to the characteristics of the frequency range required by the vibration of the display member 200 caused by the vibration of the first vibrating device 510.

[0167] According to the embodiment of the present specification, the 1-2 member 630 can independently cover the second vibration device 530 (the 2-1 vibration device 530-1 in FIG. 6) and can cover the 1-2 hole 411-2 arranged on the rear part 410 of the first cover 400. This allows a second air gap (AG2) to be provided inside the 1-2 member 630. For example, the inside of the 1-2 member 630 can include a single space, or can include a space divided into two or more. When the 1-2 member 630 includes two or more divided spaces, the internal space of the device can be utilized. When the 1-2 member 630 includes two or more divided spaces, the two or more spaces can be connected to each other via a pipe. For example, the 1-2 member 630 can be a sealed structure or a structure having an air hole (e.g., a vent structure).

[0168] According to an embodiment of the present specification, the 1-2 member 630 may be disposed on the rear surface of the rear portion 410 of the first cover 400. For example, the 1-2 member 630 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the 8-2 connecting member 653. The 8-1 connecting member 651 in the embodiment of the present specification may be the 10th connecting member, and the 8-2 connecting member 65 in the embodiment of the present specification may be the 11th connecting member, but this number is not intended to limit the contents of the present specification.

[0169] The 1-2 member 630 according to the embodiments of the present specification may have the same shape as the 1-1 member 610 due to symmetry between the left and right sides, and may have a symmetrical structure to the 1-1 member 610 based on the first intermediate line (CL1) of the display member 200.

[0170] The 1-2 member 630 according to the embodiment of the present specification may include a bottom portion 631 and a side portion 633. According to the embodiment of the present specification, the bottom portion 631 of the 1-2 member 630 may be disposed on the rear surface of the second vibrating device 530 and cover the rear surface of the second vibrating device 530 (the 2-1st vibrating device 530-1 in FIG. 6). For example, the side portion 633 of the 1-2 member 630 may be disposed on a side surface of the second vibrating device 530 and cover the rear surface of the second vibrating device 530. For example, the side portion 633 may be connected to one side (or end) of the bottom portion 631 and may be disposed along an edge of the bottom portion 631. For example, one side (or end) of the side portion 633 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the 8-2nd connecting member 653. For example, the bottom portion 631 of the 1-2 member 630 may be expressed as a second bottom frame or a second bottom member, but is not limited thereto. For example, the side portion 633 of the 1-2 member 630 may be expressed as a side wall portion, a second side frame, a second side wall frame, a second side wall member, or the like, but is not limited thereto.

[0171] The 1-2 member 630 can limit (or define) the vibration area (or vibration surface area) of the display member 200 by the second vibrating device 530 (the 2-1 vibrating device 530-1 in FIG. 6). For example, in the second part (P2) of the display member 200, as the size of the 1-2 member 630 increases, the vibration area of ​​the second part (P2) increases, and the characteristics of the low frequency range of the right sound can be improved. In another embodiment of the present specification, in the second part (P2) of the display member 200, as the size of the 1-2 member 630 decreases, the vibration area of ​​the second part (P2) decreases, and the characteristics of the high frequency range of the right sound can be improved. For example, the size of the 1-2 member 630 can be set according to the characteristics of the desired frequency range by the vibration of the display member 200 due to the vibration of the second vibrating device 530.

[0172] By limiting the vibration region (or vibration area) of the first vibrating device 510 and the second vibrating device 530, the 1-1 member 610 and the 1-2 member 630 can improve the left-right symmetry of the left and right sounds generated by the vibration of the display member 200, and can optimize the sound pressure characteristics and the reproduction range of the left and right sounds.

[0173] According to an embodiment of the present specification, the plates 511, 531, the vibration generators 513, 533, and the first members 610, 630 can configure a vibration generating device. For example, the first plate 511, the first vibration generator 513, and the 1-1 member 610 can configure a first vibration generating device. For example, the second plate 531, the second vibration generator 533, and the 1-2 member 630 can configure a second vibration generating device.

[0174] Fig. 7 is a diagram showing a vibration generator according to an embodiment of the present specification, and Fig. 8 is a cross-sectional view taken along line II-II' shown in Fig. 7.

[0175] 7 and 8, the vibration generators 513 and 533 according to the embodiments of the present specification can vibrate by alternately repeating contraction and expansion due to a piezoelectric effect (or piezoelectric characteristics). For example, the vibration generators 513 and 533 can vibrate in the thickness direction (Z) by alternately repeating contraction and expansion due to an inverse piezoelectric effect, thereby vibrating the display member 200. For example, the vibration generators 513 and 533 can have a quadrangular or square shape, but are not limited thereto.

[0176] Each of the vibration generators 513 and 533 according to the embodiment of the present specification may include a vibration part (or vibration layer) (PCL), a first electrode layer (E1), and a second electrode layer (E2). For example, a structure including the vibration part (or vibration layer) (PCL), the first electrode layer (E1), and the second electrode layer (E2) may be expressed by the term vibration element (PCM), but is not limited thereto.

[0177] The vibrating section (PCL) may include a piezoelectric material, a composite piezoelectric material, or an electroactive material that includes a piezoelectric effect. The vibrating section (PCL) may be expressed by other terms such as, but not limited to, a vibrating layer, a piezoelectric material layer, a piezoelectric composite layer, an electroactive layer, a piezoelectric material section, a piezoelectric composite section, an electroactive section, a piezoelectric structure, a piezoelectric composite, or a piezoelectric ceramic composite.

[0178] The vibrating part (PCL) according to the embodiment of the present specification may be made of a ceramic-based material capable of realizing a relatively high vibration. For example, the vibrating part (PCL) may have a 1-3 composite structure or a 2-2 composite structure. For example, the piezoelectric deformation coefficient (d 33 ) can be, but is not limited to, 1,000 pC / N or more.

[0179] The first electrode layer (E1) may be disposed on the first surface (or upper surface or front surface) of the vibrating part (PCL) and may be electrically connected to the first surface of the vibrating part (PCL). For example, the first electrode layer (E1) may have a single electrode shape (or a common electrode) disposed over the entire first surface of the vibrating part (PCL). The first electrode layer (E1) according to the embodiment of the present specification may be made of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent or semi-transparent conductive material may include, but is not limited to, ITO (indium tin oxide) or IZO (indium zinc oxide). The opaque conductive material may include, but is not limited to, aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium (Mg), or the like, or may be made of an alloy thereof.

[0180] The second electrode layer (E2) may be disposed on a second surface (or back surface or bottom surface) opposite to the first surface of the vibrating part (PCL) and may be electrically connected to the second surface of the vibrating part (PCL). For example, the second electrode layer (E2) may have a single electrode shape (or a common electrode or a single electrode) disposed over the entire second surface of the vibrating part (PCL). The second electrode layer (E2) according to the embodiment of the present specification may be made of a transparent conductive material, a semi-transparent 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. In another embodiment of the present specification, the second electrode layer (E2) may be made of a material different from that of the first electrode layer (E1).

[0181] The vibration part (PCL) may be polarized (or subjected to poling treatment) 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.

[0182] The vibration generator 513, 533 according to the embodiments of the present specification may further include a first protective member 501 and a second protective member 502.

[0183] The first protective member 501 may be disposed on the first surface of the vibration element (PCM). For example, the first protective member 501 may cover the first electrode layer (E1) disposed on the first surface of the vibration element (PCM). This allows the first protective member 501 to support the first surface of the vibration element (PCM) and to protect the first surface or the first electrode layer (E1) of the vibration element (PCM).

[0184] The first protective member 501 according to the embodiment of the present specification may be disposed on the first surface of the vibration element (PCM) via the first adhesive layer 503. For example, the first protective member 501 may be coupled or attached to the first surface of the vibration element (PCM) by a film lamination process using the first adhesive layer 503 as an intermediary.

[0185] The second protective member 502 may be disposed on the second surface of the vibration element (PCM). For example, the second protective member 502 may cover the second electrode layer (E2) disposed on the second surface of the vibration element (PCM). This allows the second protective member 502 to support the second surface of the vibration element (PCM) and to protect the second surface or the second electrode layer (E2) of the vibration element (PCM).

[0186] The second protective member 502 according to the embodiment of the present specification may be disposed on the second surface of the vibration element (PCM) via the second adhesive layer 504. For example, the second protective member 502 may be coupled or attached to the second surface of the vibration element (PCM) by a film lamination process using the second adhesive layer 504 as an intermediary.

[0187] Each of the first protective member 501 and the second protective member 502 according to the embodiment of the present specification may include a plastic film. For example, each of the first protective member 501 and the second protective member 502 may be, but is not limited to, a polyimide film, a polyethylene terephthalate film, or a polyethylene naphthalate film.

[0188] The first adhesive layer 503 may be disposed on the first surface of the vibration element (PCM). For example, the first adhesive layer 503 may be formed on the rear surface (or inner surface) of the first protective member 501 that faces the first surface of the vibration element (PCM) and disposed on the first surface of the vibration element (PCM).

[0189] The second adhesive layer 504 may be disposed on the second surface of the vibration element (PCM). For example, the second adhesive layer 504 may be formed on a front surface (or an inner surface) of the second protective member 502 that faces the second surface of the vibration element (PCM) and disposed on the second surface of the vibration element (PCM).

[0190] The vibration element (PCM) may be surrounded by the first adhesive layer 503 and the second adhesive layer 504. For example, the first adhesive layer 503 and the second adhesive layer 504 may completely surround the entire vibration element (PCM). For example, the first adhesive layer 503 and the second adhesive layer 504 may be expressed as a cover member or the like, but are not limited thereto. When the first adhesive layer 503 and the second adhesive layer 504 are assembled to form a cover member, the first protective member 501 may be disposed on a first surface of the cover member, and the second protective member 502 may be disposed on a second surface of the cover member. For example, the first adhesive layer 503 and the second adhesive layer 504 are shown as the first adhesive layer 503 and the second adhesive layer 504 for convenience of explanation, but are not limited thereto, and may be disposed as one adhesive layer.

[0191] Each of the first adhesive layer 503 and the second adhesive layer 504 according to the embodiment of the present specification may include an electrically insulating material that has adhesiveness and is compressible and resilient. For example, each of the first adhesive layer 503 and the second adhesive layer 504 may include, but is not limited to, an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin.

[0192] The vibration generator 513, 533 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 unit 505.

[0193] The first power supply line (PL1) may be disposed on the first protective member 501. For example, the first power supply line (PL1) may be disposed on a rear surface of the first protective member 501 facing the first surface of the vibration element (PCM). The first power supply line (PL1) may be electrically connected to each first electrode layer (E1) of the vibration element (PCM). For example, the first power supply line (PL1) may be directly electrically connected to the first electrode layer (E1) of the vibration element (PCM). For example, the first power supply line (PL1) may be electrically connected to the first electrode layer (E1) of the vibration element (PCM) via an anisotropic conductive film. As another example of the present specification, the first power supply line (PL1) may be electrically connected to the first electrode layer (E1) of the vibration element (PCM) via a conductive material (or particles) contained in the first adhesive layer 503.

[0194] The second power supply line (PL2) may be disposed on the second protective member 502. For example, the second power supply line (PL2) may be disposed on a front surface of the second protective member 502 facing the second surface of the vibration element (PCM). The second power supply line (PL2) may be electrically connected to the second electrode layer (E2) of the vibration element (PCM). For example, the second power supply line (PL2) may be directly electrically connected to the second electrode layer (E2) of the vibration element (PCM). For example, the second power supply line (PL2) may be electrically connected to the second electrode layer (E2) of the vibration element (PCM) via an anisotropic conductive film. As another example of the present specification, the second power supply line (PL2) may be electrically connected to the second electrode layer (E2) of the vibration element (PCM) via a conductive material (or particles) contained in the second adhesive layer 504.

[0195] The pad unit 505 may be electrically connected to each of the first power supply line (PL1) and the second power supply line (PL2). For example, the pad unit 505 may be disposed on the vibration generators 513, 533 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 unit 505 according to the 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).

[0196] The vibration generator 513, 533 according to the embodiment of the present specification may further include a flexible cable 506. The flexible cable 506 is electrically connected to the pad portion 505 arranged on the vibration generator 513, 533, and may supply a vibration drive signal (or an acoustic signal) provided from the acoustic processing circuit to the vibration element (PCM). The flexible cable 506 according to the embodiment of the present specification may include a first terminal and a second terminal. The first terminal may be electrically connected to a first pad electrode of the pad portion 505. The second terminal may be electrically connected to a second pad electrode of the pad portion 505. For example, the flexible cable 506 may be, but is not limited to, a flexible printed circuit cable or a flexible flat cable.

[0197] For example, the acoustic processing circuit (or the vibration drive circuit) can generate an AC drive signal including a drive signal of a first polarity and a drive signal of a second polarity based on an acoustic source. The drive signal of the first polarity can be either a drive signal of a positive polarity (+) or a drive signal of a negative polarity (-), and the drive signal of the second polarity can be either a drive signal of a positive polarity (+) or a drive signal of a negative polarity (-). For example, the drive signal of the first polarity can be supplied to the first electrode layer (E1) of the vibration generators 513, 533 via the first terminal of the flexible cable 506, the first pad electrode of the pad section 505, and the first power supply line (PL1). The drive signal of the second polarity can be supplied to the second electrode layer (E2) of the vibration generators 513, 533 via the second terminal of the flexible cable 506, the second pad electrode of the pad section 505, and the second power supply line (PL2).

[0198] 9A to 9F are diagrams showing a vibration part of a vibration generator according to an embodiment of the present specification. The vibration part (PCL) according to an embodiment of the present specification can include a plurality of first parts (PCLa) and a plurality of second parts (PCLb) between the plurality of first parts (PCLa). The first parts (PCLa) can include an inorganic material, and the second parts (PCLb) can include an organic material. Since the first parts (PCLa) and the second parts (PCLb) are connected to each other on a plane, the first vibration device 510 and the second vibration device 530 can be realized by one film. When configured in this way, compared to a structure in which a plurality of piezoelectric bodies are stacked, it is possible to realize the first and second vibration devices 510 and 530 with a thin thickness because they can be realized by one film. This can reduce an increase in the thickness of the device caused by the arrangement of the first and second vibration devices 510 and 530.

[0199] Each of the first portions (PCLa) according to the embodiments of the present specification may include an inorganic material or a piezoelectric material that vibrates due to a piezoelectric effect (or piezoelectric properties) caused by an electric field. For example, each of the first portions (PCLa) may be expressed as an electroactive part, an inorganic material part, a piezoelectric material part, or a vibration part, but is not limited thereto.

[0200] According to an embodiment of the present specification, each of the plurality of first portions (PCLa) may be made of a ceramic-based material capable of realizing a relatively high vibration, or may be made of a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have piezoelectric and inverse piezoelectric effects and may have orientation. The perovskite crystal structure may be an ABO 3 In the present specification, A is a divalent metal element, and B is a tetravalent metal element. 3 In the chemical formula, A and B can be cations, while O can be an anion. For example, ABO 3 The chemical formula is PbTiO 3 , PbZrO 3 , BaTiO 3 , and SrTiO 3 The present invention may include, but is not limited to, at least one of the following:

[0201] The perovskite crystal structure can be transformed by external stress or magnetic field to displace the central ions, e.g., PbTiO 3In this case, the position of Ti ions fluctuates, causing a change in polarization, which can generate a piezoelectric effect. For example, the perovskite crystal structure can change from a symmetric cubic shape to an unsymmetric tetragonal, orthorhombic, or rhombohedral shape due to external stress or magnetic field, generating a piezoelectric effect. The morphotropic phase boundaries of the tetragonal and rhombohedral structures have high polarization and are easy to rearrange, so the material can have high piezoelectric properties.

[0202] According to an embodiment of the present specification, the inorganic material of each of the first portions (PCLa) may include, but is not limited to, one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), niobium (Nb), magnesium (Mg), manganese (Mn), and indium (In). As another example, the inorganic material of each of the first portions (PCLa) may include, but is not limited to, a PZT (lead zirconate titanate)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nikel niobate)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb). According to other embodiments of the present disclosure, the materials may include, but are not limited to, PMN (lead magnesium niobate)-based materials, PNN (lead nickel niobate)-based materials, PZN (lead zirconate niobate)-based materials, or PIN (lead indium niobate)-based materials. PMN-based materials may include lead (Pb), magnesium (Mg), and niobium (Nb), for example, Pb(Mg,Nb)O 3The PNN-based material can include lead (Pb), nickel (Ni), and niobium (Nb), for example, Pb(Ni,Nb)O 3 The PIN-based material may include lead (Pb), indium (In), and niobium (Nb), for example, Pb(In,Nb)O 3 According to another embodiment of the present invention, the inorganic material may be lead (Pb)-free CaTiO 3 , BaTiO 3 , and SrTiO 3 The present invention may include, but is not limited to, at least one of the following:

[0203] Each of the second parts (PCLb) according to the embodiments of the present specification has a low modulus (or Young's modulus) and viscoelasticity compared to the first part (PCLa), and therefore the reliability of the first part (PCLa) which is vulnerable to impact due to its brittle characteristics can be improved. For example, in order for the first vibration device 510 and the second vibration device 530 to have impact resistance and high rigidity, each of the second parts (PCLb) may be made of a material having a relatively high damping factor (tan δ) and a relatively high stiffness characteristic. For example, each of the second parts (PCLb) may be made of a material having a damping factor (tan δ) of 0.1 to 1 GPa (gigapascals) and a stiffness characteristic of 0 to 10 GPa (gigapascals). The damping vector (tan δ) and stiffness characteristics can also be explained by the correlation between loss factor and modulus, and each of the multiple second portions (PCLb) can be composed of a material having a loss factor of 0.01 to 1 and a modulus of 0.1 to 10 GPa (gigapascals).

[0204] The organic material portion of each of the second portions (PCLb) may be made of an organic material or an organic polymer having a more flexible property than the inorganic material portion of the first portion (PCLa). For example, each of the second portions (PCLb) may include an organic material, an organic polymer, an organic piezoelectric material, or an organic non-piezoelectric material. For example, each of the second portions (PCLb) may be expressed as an adhesive portion, an elastic portion, a bending portion, a damping portion, or a soft portion having flexibility, but is not limited thereto.

[0205] The organic material according to the embodiment of the present specification may include at least one of an organic piezoelectric material and an organic non-piezoelectric material. The organic material including the organic piezoelectric material can absorb the impact applied to the inorganic material (or the first portion (PCLa)), thereby improving the overall durability of the first vibration device 510 and the second vibration device 530 and providing a certain level of piezoelectric properties. The organic piezoelectric material according to the embodiment of the present specification may be an organic material having electroactive properties. The organic material including the organic non-piezoelectric material can absorb the impact applied to the inorganic material (or the first portion (PCLa)) by being composed of a curable resin composition and an adhesive including the same, thereby improving the overall durability of the first vibration device 510 and the second vibration device 530. The organic non-piezoelectric material according to the embodiment of the present specification may include at least one of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but is not limited thereto.

[0206] According to an embodiment of the present specification, the organic material including the organic non-piezoelectric material may include an epoxy resin for the high rigidity characteristics required for the first vibration device 510 and the second vibration device 530, and an adhesion promoter for adhesion with the inorganic material. For example, the adhesion promoter may be a phosphate-based agent. The organic material may be cured by at least one of a thermal curing method and a photocuring method. In order to prevent the thickness uniformity of the first vibration device 510 and the second vibration device 530 from being reduced due to shrinkage of the organic material caused by volatilization of the solvent during curing of the organic material, a solvent-free type epoxy resin may be used.

[0207] In addition, the organic material including the organic non-piezoelectric material may further include a reinforcing agent for damping properties in addition to high rigidity of the first vibrating device 510 and the second vibrating device 530. For example, the reinforcing agent may be a core shell type MBS (Methylmethacrylate-Butadiene-Styrene), and the content of the reinforcing agent may be 5 to 40 wt%. For example, the reinforcing agent is a core shell type elastic body, and the shell part has a high bonding force with an epoxy resin such as an acrylic polymer, thereby improving the impact resistance or damping properties of the first vibrating device 510 and the second vibrating device 530.

[0208] In the vibration part (PCL) according to the embodiments of the present specification, the multiple first parts (PCLa) and the multiple second parts (PCLb) may be arranged alternately and repeatedly along the first direction (X) (or the second direction (Y)). For example, the first direction (X) may be the horizontal direction of the vibration part (PCL). The second direction (Y) may be the vertical direction of the vibration part (PCL) intersecting with the first direction (X), but is not limited thereto. For example, the first direction (X) may be the vertical direction of the vibration part (PCL), while the second direction (Y) may be the horizontal direction of the vibration part (PCL).

[0209] Referring to FIG. 9A and FIG. 9B, each of the plurality of first parts (PCLa) may be disposed between the plurality of second parts (PCLb). For example, each of the plurality of first parts (PCLa) may have a first width parallel to the first direction (X) and a length parallel to the second direction (Y). Each of the plurality of second parts (PCLb) may have a second width parallel to the first direction (X) and a length parallel to the second direction. For example, the first width may be greater than the second width. For example, the plurality of first parts (PCLa) and the plurality of second parts (PCLb) may have the same or different sizes (or widths) and may be arranged alternately and repeatedly along the first direction (X) (or the second direction (Y)), and may include a line shape or a stripe shape. Therefore, the vibration part (PCL) shown in FIG. 9A and FIG. 9B may have a resonance frequency of 20 kHz or less by having a 2-2 composite structure. Without being limited thereto, the resonant frequency of the vibrating portion (PCL) can be changed by at least one or more of the shape, length, and thickness of the vibrating portion.

[0210] According to an embodiment of the present specification, the first portions (PCLa) are arranged at a distance from each other along the first direction (X) and the second direction (Y), and each of the second portions (PCLb) may be arranged to fill the gap between the adjacent first portions (PCLa) or to surround each of the first portions (PCLa) (FIGS. 9C, 9D, 9E, and 9F). For example, the first portions (PCLa) may be arranged in a lattice shape while having the same size as each other (FIG. 9C). For example, the first portions (PCLa) may have a circular planar structure (FIG. 9D). For example, the first portions (PCLa) may have a circular shape, but are not limited thereto. For example, the first portions (PCLa) may have a planar structure such as an elliptical shape, a polygonal shape, or a donut shape. For example, the first portions (PCLa) may have a triangular planar structure (FIGS. 9E and 9F).

[0211] The vibration part (PCL) according to various embodiments of the present specification may have the shape of a single thin film by arranging (or connecting) a plurality of first parts (PCLa) and second parts (PCLb) on the same plane. For example, the vibration part (PCL) may vibrate in the vertical direction by the first part (PCLa) having vibration characteristics, and may bend into a curved shape by the second part (PCLb) having flexibility. In addition, in the vibration part (PCL) according to various embodiments of the present specification, the size of the first part (PCLa) and the size of the second part (PCLb) may be adjusted according to the piezoelectric characteristics and flexibility required for the vibration part (PCL). For example, in the case of a vibration part (PCL) that requires piezoelectric characteristics rather than flexibility, the size of the first part (PCLa) may be configured to be larger than the size of the second part (PCLb). As another embodiment of the present specification, in the case of a vibration part (PCL) that requires flexibility rather than piezoelectric characteristics, the size of the second part (PCLb) may be configured to be larger than the size of the first part (PCLa). Therefore, the size of the vibrating part (PCL) can be adjusted according to the required characteristics, which makes it easy to design the vibrating part (PCL).

[0212] 10 and 11 are other enlarged views of the 'B' portion shown in FIG. 3. In FIG. 10 and 11, the first plate 511 of the first vibrating device 510 in FIG. 3 is modified. In the following description, except for the modified configuration and the configuration related thereto, the duplicated description of the remaining same configuration will be briefly described or omitted. The description of the first plate 511 with reference to FIG. 10 and FIG. 11 can be similarly applied to the second plate 531 of the second vibrating device 530.

[0213] 10 and 11, the first plate 511 according to another embodiment of the present specification may have a convex or concave curved shape. The warping direction of the first plate 511 may be one or more of the long axis, the short axis, and the diagonal direction. For example, a portion of the first plate 511 corresponding to (or overlapping with) the 1-1 hole 411-1 may have a convex or concave shape. As shown in FIG. 10, the portion of the first plate 511 corresponding to (or overlapping with) the 1-1 hole 411-1 may be curved toward the 1-1 hole 411-1. As shown in FIG. 11, the portion of the first plate 511 corresponding to (or overlapping with) the 1-1 hole 411-1 may be curved away from the 1-1 hole 411-1 or toward the opposite direction of the 1-1 hole 411-1.

[0214] The second plate 531 according to other embodiments of the present specification may have the same shape as the first plate 511. For example, the second plate 531 may have a shape warped in a convex or concave shape. For example, the warping direction of the second plate 531 may be one or more of the long axis, the short axis, and the diagonal direction. For example, the portion of the second plate 531 corresponding to (or overlapping with) the 1-2 hole 411-2 may have a convex or concave shape. For example, the portion of the second plate 531 corresponding to (or overlapping with) the 1-2 hole 411-2 may be curved toward the 1-2 hole 411-2. For example, the portion of the second plate 531 corresponding to (or overlapping with) the 1-2 hole 411-2 may be curved away from the 1-2 hole 411-2 or toward the opposite direction of the 1-1 hole 411-1.

[0215] Fig. 12 is another enlarged view of part 'B' shown in Fig. 3. Fig. 13 is another enlarged view of part 'C' shown in Fig. 3. Fig. 12 shows a modification of first plate 511 of first vibrating device 510 in Fig. 3, and Fig. 13 shows a modification of second plate 531 of second vibrating device 530 in Fig. 3. In the following description, except for the modified configuration and the related configuration, the duplicated description of the remaining same configuration will be simplified or omitted.

[0216] 12 and 13, the first plate 511 and the second plate 531 according to other embodiments of the present specification may include second holes 511a, 531a. For example, the second hole 511a of the first plate 511 shown in FIG. 12 may also be applied to the first plate 511 shown in FIG. 10, and the second hole 531a of the first plate 531 shown in FIG. 13 may also be applied to the second plate 531 shown in FIG. 11.

[0217] According to the embodiment of the present specification, the second holes 511a, 531a may be disposed in the portions of the plates 511, 531 corresponding to (or overlapping with) the first holes 411-1, 411-2. For example, the second holes 511a, 531a may increase the displacement of the first and second vibrating devices 510, 530. For example, the second holes 511a, 531a may be disposed according to the acoustic characteristics required for the first vibrating device 510 and the second vibrating device 530. For example, the number, shape, length, width, etc. of the second holes 511a, 531a may be changed according to the acoustic characteristics required for the first vibrating device 510 and the second vibrating device 530. The second hole 511a in the embodiment of the present specification may be a third hole, and the second hole 531a in the embodiment of the present specification may be a fourth hole, but this number is not intended to limit the contents of the present specification.

[0218] According to an embodiment of the present specification, the total area of ​​the second holes (or 2-1 holes) 511a arranged on the first plate 511 of the first vibrating device 510 may be the same as or different from the total area of ​​the second holes (or 2-2 holes) 531a arranged on the second plate 531 of the second vibrating device 530.

[0219] According to an embodiment of the present specification, the number, shape, length, and width of the 2-1 holes 511a arranged in the first plate 511 may be the same as the number, shape, length, and width of the 2-2 holes 531a arranged in the second plate 531. For example, at least one or more of the number, shape, length, and width of the 2-1 holes 511a may be different from the number, shape, length, and width of the 2-2 holes 531a.

[0220] The second holes 511a, 531a can adjust the amount of displacement of the plates 511, 531. Therefore, by arranging the second holes 511a, 531a in the plates 511, 531 according to the acoustic characteristics required for the first vibrating device 510 and the second vibrating device 530, the devices can generate sounds having the required acoustic characteristics.

[0221] According to the embodiment of the present disclosure, the seventh connecting members 517 and 537 may or may not overlap the second holes 511a and 531a.

[0222] Fig. 14 is an exploded view of a device according to another embodiment of the present specification. Fig. 15 is another cross-sectional view of the connection structure of the device shown in Fig. 14 along line II' shown in Fig. 1. Fig. 16 is an enlarged view of part 'D' shown in Fig. 15.

[0223] 14 to 16 show devices according to other embodiments of the present specification, which are obtained by modifying the first cover, the vibration device, and the members in the devices according to the embodiments of the present specification described with reference to Figs. 1 to 13. In the following description, except for the modified configurations and the configurations related thereto, duplicated descriptions of the remaining identical configurations will be simplified or omitted.

[0224] 14 to 16, the first cover 400 according to another embodiment of the present specification may include a third hole 413 disposed in the rear part 410. For example, the third hole 413 may increase the amount of sound generated by the vibration of the first and second vibrating devices 510 and 530 transmitted to the front of the device. For example, the third hole 413 may be disposed in the first cover 400 overlapping with the first and second vibrating devices 510 and 530, and the rear surface of the backlight 230 may be exposed to the first and second vibrating devices 510 and 530 through the third hole 413. For example, the rear surface of the backlight 230 may be exposed to the first and second vibrating devices 510 and 530 through the third hole 413. For example, the reflective sheet 235 of the backlight 230 may be exposed toward the rear surface of the first cover 400 through the third hole 413. For example, the reflective sheet 235 of the backlight 230 may be exposed to the first and second vibration devices 510, 530 through the third hole 413. For example, the third hole 413 may be disposed in or on the first area (A1) and the second area (A2) of the rear portion 410 of the first cover 400, respectively.

[0225] According to an embodiment of the present specification, the third hole 413 may include a 3-1 hole 413-1 and a 3-2 hole 413-2. For example, the 3-1 hole 413-1 may be disposed in the first region (A1). For example, the 3-2 hole 413-2 may be disposed in the second region (A2). For example, the 3-1 hole 413-1 may be disposed in the first middle region (MA1) or the first edge region (EA1), or may be disposed across the first middle region (MA1) and the first edge region. For example, the 3-2 hole 413-2 may be disposed in the second middle region (MA2) or the second edge region (EA2), or may be disposed across the second middle region (MA2) and the second edge region (EA2). The 3-1 hole 413-1 in the embodiment of the present specification may be a first hole, and the 3-2 hole 413-2 in the embodiment of the present specification may be a second hole, but this number is not intended to limit the content of the present specification.

[0226] The third hole 413 may provide a second gap space between the display member 200 and the vibration device 500. For example, the third hole 413 may provide a second gap space between the backlight 230 of the display member 200 and the vibration device 500. For example, the second gap space may be expressed as a vibration space caused by driving the vibration device 500, a sound pressure space (or a resonating part) where sound pressure is generated by the vibration of the vibration device 500, or a sound wave propagation path (or a sound energy incident part) where sound waves generated according to the vibration of the vibration device 500 are directly propagated to the display member 200, but is not limited thereto.

[0227] The vibration device 500 of the device according to other embodiments of the present specification may include, but is not limited to, a first vibration device 510 (e.g., including a 1-1 vibration device 510-1 in a first area (A1)) and a second vibration device 530 (e.g., including a 2-1 vibration device 530-1 in a second area (A2)).

[0228] The first vibrating device 510 according to the embodiment of the present specification may be disposed on the rear surface of the rear portion 410 of the first cover 400. For example, the first vibrating device 510 may be disposed in a first region (A1) of the first cover 400, and may vibrate the first region (A1) of the first cover 400 in response to a first driving signal to vibrate the first portion (P1) of the display member 200, thereby generating a first sound (S1) in a first sound range band due to the vibration of the first portion (P1) of the display member 200, or may generate a first haptic feedback (or a first haptic vibration) in response to a touch, for example, a touch by a user.

[0229] The first vibration device 510 may include, but is not limited to, the first-first vibration device 510-1, the first-second vibration device 510-2, and the second member 510-3. For example, the first-first vibration device 510-1 and the first-second vibration device 510-2 may be arranged adjacent to each other. For example, the second member 510-3 may be a first support member, a first guide member, or a first member, and may be used in a mixed manner. However, the present invention is not limited to this. According to other embodiments of the present specification, the first-first vibration device 510-1 and the first-second vibration device 510-2 may be applied interchangeably with each other. For example, the first-second vibration device 510-2 may be arranged on the back surface of the first cover 400.

[0230] The 1-1 vibrating device 510-1 may be disposed on the rear surface of the first cover 400. For example, the 1-1 vibrating device 510-1 may be disposed in a first region (A1) of the rear surface portion 410 of the first cover 400. For example, the 1-1 vibrating device 510-1 may vibrate the first region (A1) of the first cover 400 by a 1-1 driving signal including an audio signal or a haptic feedback signal, thereby vibrating the first portion (P1) of the display member 200, thereby generating a first sound (S1) in a first sound range band due to the vibration of the first portion (P1) of the display member 200, or generating a first haptic feedback (or a first haptic vibration) in response to a touch, for example, a touch by a user. For example, the 1-1 vibration device 510-1 can vibrate a first area (A1) of the first cover 400 to directly vibrate a first part (P1) of the display member 200, thereby generating a first sound (S1) in a first frequency range due to the vibration of the first part (P1) of the display member 200, or generating a first haptic feedback (or a first haptic vibration) in response to a touch.

[0231] According to an embodiment of the present specification, the 1-1st vibration device 510-1 may be a film-type vibration device. For example, the 1-1st vibration device 510-1 may be expressed as, but is not limited to, a flexible sound generator, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, a film actuator, a film-type piezoelectric composite actuator, a film speaker, a film-type piezoelectric speaker, or a film-type piezoelectric composite speaker.

[0232] In contrast to the 1-1 vibration device 510-1 of the first vibration device 510 according to an embodiment of the present specification being configured to cover the 1-1 hole 411-1 arranged on the rear portion 410 of the first cover 400, the 1-1 vibration device 510-1 of the first vibration device 510 according to other embodiments of the present specification has the same configuration as the 1-1 vibration device 510-1 of the first vibration device 510 according to an embodiment of the present specification, except that it is arranged on the rear of the rear portion 410 of the first cover 400, and therefore duplicated description thereof will be omitted or briefly described.

[0233] According to an embodiment of the present specification, the 1-1 vibration device 510-1 may include a first plate 511 disposed on the rear surface of the rear portion 410 of the first cover 400 via a 6-1 connection member 515, and a first vibration generator 513 disposed on the rear surface of the first plate 511 via a 7-1 connection member 517, as shown in Figs. 15 and 16. For example, the positions of the first plate 511 and the first vibration generator 513 may be changed. For example, the 1-1 vibration device 510-1 may include a first vibration generator 513 disposed on the rear surface of the rear portion 410 of the first cover 400 via a 6-1 connection member 515, and a first plate 511 disposed on the rear surface of the first vibration generator 513 via a 7-1 connection member 517.

[0234] The 1-2 vibration device 510-2 may be disposed on the rear part 410 of the first cover 400. For example, the 1-2 vibration device 510-2 may be disposed on the rear part of the rear part 410 of the first cover 400 so as to cover the 3-1 hole 413-1 (or the 1-1 hole). For example, when configuring the second member 510-3 according to the embodiment of the present specification, the 1-2 vibration device 510-2 may be disposed on the rear part of the second member 510-3. For example, the 1-2 vibration device 510-2 may be disposed on the rear part of the second member 510-3 via the 9-1 connecting member 510-3c. For example, the 1-2 vibration device 510-2 may be a coil-type vibration device (or vibration generator), but may be a vibration device (or vibration generator) including a magnet, a bobbin, and a coil wound on the bobbin. For example, the 9-1 connecting member 510-3c can be disposed between the rear surface of the second member 510-3 and the bobbin of the 1-2 vibration device 510-2.

[0235] The coil-type vibration device according to the embodiment of the present specification may further include a frame (or plate), a center pole, and a damper. The magnet (or permanent magnet) may be disposed on the frame so as to be accommodated in the hollow portion of the bobbin. The coil may be wound so as to surround the outer circumferential surface of the bobbin. For example, the coil may receive an acoustic signal (or voice signal) from the outside. The coil may rise and fall together with the rise and fall of the bobbin. When an acoustic signal is applied to the coil, the bobbin may vibrate, for example, reciprocate up and down, according to Fleming's left-hand rule based on the applied electric field formed around the coil and the external magnetic field formed around the magnet. The center pole may be disposed on the magnet to guide the vibration of the bobbin. For example, the center pole may be surrounded by the bobbin by being inserted (or accommodated) in the hollow portion of the bobbin. For example, the center pole may be disposed on the magnet so as to be accommodated in the hollow portion of the bobbin. For example, the damper may be disposed between the frame and the bobbin. The damper may have a bellows structure between one side and the other side, so that it may contract or relax due to the vibration of the bobbin. For example, the damper can limit the vibration distance (e.g., the vertical movement distance) of the bobbin by the restoring force. For example, when the bobbin vibrates more than a certain distance or less than a certain distance, the bobbin can return to its original position by the restoring force of the damper. The configuration of the coil-type vibration device is not limited to this.

[0236] According to an embodiment of the present specification, since the displacement of the first-second vibrating device 510-2 increases in the low frequency band, the third hole 413 may secure a vibration space between the first vibrating device 510 and the optical sheet unit 237. For example, in order to reduce the height of the device due to the first-second vibrating device 510-2, the first members 610 and 630 may be configured or embodied such that the bobbin of the first-second vibrating device 510-2 is exposed to the third hole 413 or is inserted (or housed) in the third hole 413.

[0237] According to an embodiment of the present specification, the first-second vibrating device 510-2 can vibrate the first area (A1) of the first cover 400 by the first-second driving signal including an audio signal or a haptic feedback signal. Thus, the first-second vibrating device 510-2 can vibrate the first portion (P1) of the display member 200 to generate a first sound (S1) in a first sound range band due to the vibration of the first portion (P1) of the display member 200, or generate a first haptic feedback (or a first haptic vibration) in response to a touch, for example, a touch by a user.

[0238] The 1-2 vibration device 510-2 according to the embodiment of the present specification can vibrate the first area (A1) of the first cover 400 in response to the 1-2 driving signal to generate sound pressure inside the 3-1 hole 413-1 (or the second gap space), thereby vibrating the first part (P1) of the display member 200 to generate a first sound (S1) in a first sound range.

[0239] According to the embodiment of the present specification, when the 1-2 vibration device 510-2 vibrates according to the 1-2 driving signal, the vibration of the 1-2 vibration device 510-2 may cause the vibration of the first area (A1) of the first cover 400, generating sound pressure inside the 3-1 hole 413-1. The vibration of the backlight 230 due to this sound pressure generates sound pressure in the sound transmission space (STS), and the first sound (S1) in the first sound range generated by the vibration of the first part (P1) of the display panel 210 due to the sound pressure generated in the sound transmission space (STS) can be output to the front (FD) of the display panel 210. Therefore, the sound wave generated by the vibration of the 1-2 vibration device 510-2 is directly transmitted (or propagated) to the display member 200 via the 3-1 hole 413-1, thereby improving the sound pressure characteristics and / or sound quality of the first sound (S1).

[0240] The second member 510-3 is disposed between the rear portion 410 of the first cover 400 and the first vibrating device 510. For example, the second member 510-3 can support the 1-2 vibrating device 510-2. For example, the second member 510-3 can be disposed on the rear surface of the rear portion 410 of the first cover 400 via the 10-1 connecting member 510-3d.

[0241] The second member 510-3 according to the embodiment of the present specification may include a 4-1 hole 510-3a and a 4-2 hole 510-3b. The 4-1 hole 510-3a according to the embodiment of the present specification may be a 5th hole, and the 4-2 hole 510-3b according to the embodiment of the present specification may be a 6th hole, but this number is not intended to limit the contents of the present specification.

[0242] The 4-1 hole 510-3a according to the embodiment of the present specification may correspond to (or overlap) the 1-1 vibration device 510-1. For example, the 4-1 hole 510-3a may have the same shape as the 1-1 vibration device 510-1, but is not limited thereto. For example, the size (or width) of the 4-1 hole 510-3a may be the same as the size of the 1-1 vibration device 510-1 or may be larger than the size of the 1-1 vibration device 510-1. For example, the 4-1 hole 510-3a may provide a displacement space for the 1-1 vibration device 510-1, thereby increasing the displacement amount of the 1-1 vibration device 510-1. For example, the 4-1 hole 510-3a may be covered by the first plate 511 of the 1-1 vibration device 510-1. For example, the vibration generator 513 of the 1-1 vibration device 510-1 may be disposed on the first plate 511. For example, the vibration generator 513 of the 1-1 vibration device 510-1 may be disposed on the rear surface of the first plate 511.

[0243] The 4-2 hole 510-3b according to the embodiment of the present specification may correspond to (or overlap with) the 3-1 hole 413-1 of the first cover 400. For example, the 4-2 hole 510-3b may correspond to (or overlap with) the 1-2 vibration device 510-2. For example, the 4-2 hole 510-3b may have the same or similar shape as the 3-1 hole 413-1 of the first cover 400, but is not limited thereto. For example, the size (or width) of the 4-2 hole 510-3b may be the same as or different from the size of the 3-1 hole 413-1 of the first cover 400. For example, the size of the 4-2 hole 510-3b may be smaller or larger than the size of the 3-1 hole 413-1.

[0244] According to an embodiment of the present specification, the 4-2 hole 510-3b may be covered by the 1-2 vibration device 510-2. For example, the 1-2 vibration device 510-2 may be disposed on the back surface of the second member 510-3 and cover the 4-2 hole 510-3b. For example, the 1-2 vibration device 510-2 may output a second sound pressure through the 4-2 hole 510-3b. For example, the 1-2 vibration device 510-2 may output a low-frequency sound through the 4-2 hole 510-3b, but is not limited thereto.

[0245] According to an embodiment of the present specification, the second member 510-3 may be housed (or accommodated) inside the 1-1 member 610 and support at least one of the 1-1 vibration device 510-1 and the 1-2 vibration device 510-2. For example, the second member 510-3 may be connected or coupled to at least a portion of the 1-1 member 610. For example, the second member 510-3 may be expressed as a first support member, a first support frame, a first support panel, a first guide panel, or a first guider, but is not limited thereto.

[0246] According to the embodiment of the present specification, the portion of the second member 510-3 disposed between the 4-1 hole 510-3a and the 4-2 hole 510-3b can acoustically separate the space in which the 1-1 vibration device 510-1 is disposed from the space in which the 1-2 vibration device 510-2 is disposed. This can prevent or reduce interference between a first sound pressure (or sound wave) generated by the vibration of the 1-1 vibration device 510-1 and a second sound pressure (or sound wave) different from the first sound pressure generated by the vibration of the 1-2 vibration device 510-2, thereby preventing or reducing deterioration of acoustic characteristics.

[0247] The second vibrating device 530 according to the embodiment of the present specification may be disposed on the rear surface of the rear portion 410 of the first cover 400. For example, the second vibrating device 530 may be disposed in a second region (A2) of the first cover 400, and may vibrate the second region (A2) of the first cover 400 in response to a second driving signal, thereby vibrating the second portion (P2) of the display member 200, thereby generating a second sound (S2) in a second sound range band due to the vibration of the second portion (P2) of the display member 200, or generating a second haptic feedback (or a second haptic vibration) in response to a touch, for example, a touch by a user.

[0248] The vibration device 530 may include, but is not limited to, a 2-1 vibration device 530-1, a 2-2 vibration device 530-2, and a third member 530-3. The 2-1 vibration device 530-1 and the 2-2 vibration device 530-2 may be disposed adjacent to each other. For example, the third member 530-3 may be a second support member, a second guide member, or a first member, but may be used in a mixed manner. However, the present invention is not limited to this.

[0249] The 2-1 vibrating device 530-1 may be disposed on the rear surface of the first cover 400. For example, the 2-1 vibrating device 530-1 may be disposed in the second region (A2) of the rear surface portion 410 of the first cover 400. For example, the 2-1 vibrating device 530-1 may vibrate the second region (A2) of the first cover 400 and vibrate the second portion (P2) of the display member 200 by a 2-1 driving signal including an audio signal and / or a haptic feedback signal, thereby generating a second sound (S2) in a second sound range band due to the vibration of the second portion (P2) of the display member 200, or generating a second haptic feedback (or a second haptic vibration) in response to a touch, for example, a touch by a user. For example, the 2-1 vibration device 530-1 can vibrate the second area (A2) of the first cover 400 to directly vibrate the second part (P2) of the display member 200, thereby generating a second sound (S2) in a second frequency range due to the vibration of the second part (P2) of the display member 200, or generating a second haptic feedback (or a second haptic vibration) in response to a touch.

[0250] The 2-1 vibration device 530-1 may be configured substantially the same as the 1-1 vibration device 510-1. According to an embodiment of the present specification, the 2-1 vibration device 530-1 may include a second plate 531 disposed on the rear surface of the rear portion 410 of the first cover 400 via a 6-2 connection member 535, and a second vibration generator 533 disposed on the rear surface of the second plate 531 via a 7-2 connection member 537, as shown in FIG. 15 and FIG. 16. For example, the positions of the second plate 531 and the second vibration generator 533 may be changed. For example, the 2-1 vibration device 530-1 may include a second vibration generator 533 disposed on the rear surface of the rear portion 410 of the first cover 400 via a 6-2 connection member 535, and a second plate 531 disposed on the rear surface of the second vibration generator 533 via a 7-2 connection member 537.

[0251] The 2-2 vibration device 530-2 may be disposed on the rear part 410 of the first cover 400. For example, the 2-2 vibration device 530-2 may be disposed on the rear part of the rear part 410 of the first cover 400 so as to cover the 3-2 hole 413-2 (or the 1-2 hole). For example, when the third member 530-3 according to the embodiment of the present specification is configured, the 2-2 vibration device 530-2 may be disposed on the rear part of the third member 530-3. For example, the 2-2 vibration device 530-2 may be disposed on the rear part of the third member 530-3 via the 9-2 connecting member 530-3c. For example, the 2-2 vibration device 530-2 may be a coil-type vibration device (or vibration generator), but may be a vibration device (or vibration generator) including a magnet, a bobbin, and a coil wound on the bobbin. For example, the 9-2 connecting member 530-3c may be disposed between the rear surface of the 3rd member 530-3 and the bobbin of the 2-2 vibration device 530-2. The 9-1 connecting member 510-3c in the embodiment of this specification may be the 12th connecting member, and the 9-2 connecting member 530-3c in the embodiment of this specification may be the 13th connecting member, but this number is not intended to limit the contents of this specification.

[0252] According to an embodiment of the present specification, the second-2 vibrating device 530-2 can vibrate the second area (A2) of the first cover 400 by the second-2 driving signal including an audio signal and / or a haptic feedback signal. Thus, the second-2 vibrating device 530-2 can vibrate the second portion (P2) of the display member 200 to generate a second sound (S2) in a second range band due to the vibration of the second portion (P2) of the display member 200, or generate a second haptic feedback (or haptic vibration) in response to a touch, for example, a touch by a user. For example, the second-2 vibrating device 530-2 can directly vibrate the second portion (P2) of the display member 200 to generate a second sound (S2) in a second range band due to the vibration of the second portion (P2) of the display member 200, or generate a second haptic feedback (or haptic vibration) in response to a touch.

[0253] The 2-2 vibration device 530-2 according to the embodiment of the present specification can vibrate the second area (A2) of the first cover 400 in response to the 2-2 driving signal to generate sound pressure inside the 3-2 hole 413-2 (or the second gap space), thereby vibrating the second part (P2) of the display member 200 to generate a second sound (S2) in the second sound range.

[0254] According to the embodiment of the present specification, when the 2-2 vibration device 530-2 vibrates according to the 2-2 driving signal, the vibration of the 2-2 vibration device 530-2 may cause the vibration of the second area (A2) of the first cover 400, generating sound pressure inside the 3-2 hole 413-2. The vibration of the backlight 230 due to this sound pressure generates sound pressure in the sound transmission space (STS), and the second sound (S2) in the second sound range generated by the vibration of the second part (P2) of the display panel 210 due to the sound pressure generated in the sound transmission space (STS) may be output to the front (FD) of the display panel 210. Therefore, the sound waves generated by the vibration of the 2-2 vibration device 530-2 are directly transmitted (or propagated) to the display member 200 via the 3-2 hole 413-2, thereby improving the sound pressure characteristics and sound quality of the second sound (S2).

[0255] The third member 530-3 may be disposed between the rear portion 410 of the first cover 400 and the second vibrating device 530. For example, the third member 530-3 may support the second-second vibrating device 530-2. For example, the third member 530-3 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the first-second connecting member 530-3d. The first-first connecting member 510-3d in the embodiment of this specification may be the fourteenth connecting member, and the first-second connecting member 530-3d in the embodiment of this specification may be the fifteenth connecting member, but this number does not limit the contents of this specification.

[0256] The third member 530-3 according to the embodiment of the present specification may include a 5-1 hole 530-3a and a 5-2 hole 530-3b. The 5-1 hole 530-3a according to the embodiment of the present specification may be a 7th hole, and the 5-2 hole 530-3b according to the embodiment of the present specification may be an 8th hole, but this number is not intended to limit the contents of the present specification. The 5-1 hole 530-3a according to the embodiment of the present specification may correspond to (or overlap with) the 2-1 vibration device 530-1. For example, the 5-1 hole 530-3a may have the same or similar shape as the 2-1 vibration device 530-1, but is not limited thereto. For example, the size of the 5-1 hole 530-3a may be the same as the size of the 2-1 vibration device 530-1 or may be larger than the size of the 2-1 vibration device 530-1. For example, the 5-1 hole 530-3a can provide a displacement space for the 2-1 vibration device 530-1, thereby increasing the displacement amount of the 2-1 vibration device 530-1. For example, the 5-1 hole 530-3a can be covered by the second plate 531 of the 2-1 vibration device 530-1. For example, the vibration generator 533 of the 2-1 vibration device 530-1 can be disposed on the second plate 531. For example, the vibration generator 533 of the 2-1 vibration device 530-1 can be disposed on the back surface of the second plate 531.

[0257] The 5-2 hole 530-3b according to the embodiment of the present specification may correspond to (or overlap with) the 3-2 hole 413-2 of the first cover 400. For example, the 5-2 hole 530-3b may correspond to (or overlap with) the 2-2 vibration device 530-2. For example, the 5-2 hole 530-3b may have the same shape as the 3-2 hole 413-2 of the first cover 400, but is not limited thereto. For example, the size of the 5-2 hole 530-3b may be the same as or different from the size of the 3-2 hole 413-2 of the first cover 400. For example, the size of the 5-2 hole 530-3b may be smaller or larger than the size of the 3-2 hole 413-2.

[0258] According to an embodiment of the present specification, the 5-2 hole 530-3b may be covered by the 2-2 vibration device 530-2. For example, the 2-2 vibration device 530-2 may be disposed on the back surface of the third member 530-3 and cover the 5-2 hole 530-3b. For example, the 2-2 vibration device 530-2 may output a second sound pressure through the 5-2 hole 530-3b. For example, the 2-2 vibration device 530-2 may output a low-frequency sound through the 5-2 hole 530-3b, but is not limited thereto.

[0259] According to an embodiment of the present specification, the third member 530-3 may be housed (or accommodated) inside the first-2 member 630 and support at least one of the second-1 vibration device 530-1 and the second-2 vibration device 530-2. For example, the third member 530-3 may be connected or coupled to at least a portion of the first-2 member 630. For example, the third member 530-3 may be expressed as a second support member, a second support frame, a second support panel, a second guide panel, or a second guider, but is not limited thereto.

[0260] According to an embodiment of the present specification, the portion 530-3e of the third member 530-3 disposed between the 5-1 hole 530-3a and the 5-2 hole 530-3b can acoustically separate the space in which the 2-1 vibration device 530-1 is disposed from the space in which the 2-2 vibration device 530-2 is disposed. This can prevent or reduce interference between the sound pressure (or sound waves) generated by the vibration of the 2-1 vibration device 530-1 and the sound pressure (or sound waves) generated by the vibration of the 2-2 vibration device 530-2, thereby preventing or reducing deterioration of acoustic characteristics or sound quality.

[0261] The first member 600 according to another embodiment of the present specification is a modified version of the first member 600 according to an embodiment of the present specification, and is similar to the first member 600 according to an embodiment of the present specification except for including a through hole 670, so duplicate descriptions will be omitted or will be described briefly.

[0262] The first member 600 according to other embodiments of the present specification may be disposed on the rear surface of the first cover 400. For example, the first member 600 may overlap the 4-1 hole 510-3a and the 4-2 hole 510-3b, and may overlap the 5-1 hole 530-3a and the 5-2 hole 530-3b. The first member 600 according to other embodiments of the present specification may include the 1-1 member 610 and the 1-2 member 630.

[0263] The 1-1 member 610 can cover the entire first vibrating device 510. For example, the 1-1 member 610 can cover the 1-1 vibrating device 510-1 and the 1-2 vibrating device 510-2 together. For example, the 1-1 member 610 can be disposed in the first area (A1) of the rear part 410 of the first cover 400 via the 8-1 connecting member 651. For example, the 1-1 member 610 can cover the 3-1 hole 413-1 disposed in the rear part 410 of the first cover 400.

[0264] The 1-1 member 610 according to other embodiments of the present specification may include a bottom 611, a side 613, and a first through hole (or a first hole) 671. According to embodiments of the present specification, the bottom 611 may be disposed on the rear surface of the first vibrating device 510. For example, the bottom 611 may overlap with the 4-1 hole 510-3a and the 4-2 hole 510-3b, respectively. For example, the bottom 611 may cover the rear surface of the first vibrating device 510. For example, the bottom 611 may be disposed on the rear surface of the 1-1 vibrating device 510-1 and the rear surface of the 1-2 vibrating device 510-2. For example, the bottom 611 may cover the rear surface of the 1-1 vibrating device 510-1 and the rear surface of the 1-2 vibrating device 510-2.

[0265] According to an embodiment of the present specification, the side portion 613 may be disposed on a side surface of the first vibrating device 510 and may cover the side surface of the first vibrating device 510. For example, the side portion 613 may be connected to one side (or end) of the bottom portion 611. For example, the side portion 613 may be disposed along an edge of the bottom portion 611. For example, one side (or end) of the side portion 613 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the eighth-1st connecting member 651.

[0266] According to another embodiment of the present specification, the first through hole 671 may be disposed in the bottom 611. For example, the first through hole 671 may correspond to (or overlap with) the 1-2 vibration device 510-2. For example, the first through hole 671 may provide a displacement space for the 1-2 vibration device 510-2, thereby increasing the displacement amount of the 1-2 vibration device 510-2. The first through hole 671 may be a path through which a part of the 1-2 vibration device 510-2 passes. For example, a central part of the 1-2 vibration device 510-2 may be exposed or protrude to the outside of the 1-1 member 610 through the first through hole 671. According to another embodiment of the present specification, the first through hole 671 may correspond to (or overlap with) the 1-1 vibration device 510-1. For example, the first through hole 671 may be a path through which a part of the 1-1 vibration device 510-1 passes. For example, a portion of the 1-1 vibration device 510-1 may be exposed or protrude to the outside of the 1-1 member 610 through the first through hole 671.

[0267] The 1-2 member 630 can cover the entire second vibrating device 530. For example, the 1-2 member 630 can cover the 2-1 vibrating device 530-1 and the 2-2 vibrating device 530-2 together. For example, the 1-2 member 630 can be disposed in the second area (A2) of the rear part 410 of the first cover 400 via the 8-2 connecting member 653. For example, the 1-2 member 630 can cover the 3-2 hole 413-2 disposed in the rear part 410 of the first cover 400.

[0268] The 1-2 member 630 according to another embodiment of the present specification may include a bottom 631, a side 633, and a second through hole (or a second hole) 673. According to an embodiment of the present specification, the bottom 631 may be disposed on the rear surface of the second vibrating device 530. For example, the bottom 631 may overlap with each of the 5-1 hole 530-3a and the 5-2 hole 530-3b. For example, the bottom 631 may cover the rear surface of the second vibrating device 530. For example, the bottom 611 may be disposed on the rear surface of the 2-1 vibrating device 530-1 and the rear surface of the 2-2 vibrating device 530-2. For example, the bottom 611 may cover the rear surface of the 2-1 vibrating device 530-1 and the rear surface of the 2-2 vibrating device 530-2.

[0269] According to an embodiment of the present specification, the side portion 613 may be disposed on a side surface of the second vibrating device 530 and may cover the side surface of the second vibrating device 530. For example, the side portion 613 may be connected to one side (or end) of the bottom portion 611. For example, the side portion 613 may be disposed along an edge of the bottom portion 611. For example, one side (or end) of the side portion 613 may be disposed on the rear surface of the rear portion 410 of the first cover 400 via the eighth-2 connecting member 653.

[0270] According to an embodiment of the present specification, the second through hole 673 may be disposed in the bottom 611. For example, the second through hole 673 may correspond to (or overlap with) the 2-2 vibration device 530-2. For example, the first through hole 671 may provide a displacement space for the 1-2 vibration device 510-2, thereby increasing the displacement amount of the 1-2 vibration device 510-2. For example, the second through hole 673 may be a path through which a part of the 2-2 vibration device 530-2 passes. For example, a central part of the 2-2 vibration device 530-2 may be exposed or protrude to the outside of the 1-2 member 630 through the second through hole 673. According to another embodiment of the present specification, the second through hole 673 may correspond to (or overlap with) the 2-1 vibration device 530-1. For example, the second through hole 673 may be a path through which a part of the 2-1 vibration device 530-1 passes. For example, a portion of the 2-1 vibration device 530-1 may be exposed or protrude to the outside of the 1-2 member 630 through the second through hole 673.

[0271] According to the embodiment of the present specification shown in Figures 14 to 16, the 1-1 vibration device 510-1, the 1-2 vibration device 510-2, the second member 510-3, and the 1-1 member 610 can configure a first vibration generating device. For example, the 2-1 vibration device 530-1, the 2-2 vibration device 530-2, the third member 530-3, and the 1-2 member 630 can configure a second vibration generating device. The 3-1 hole 413-1 can be the 1-1 hole, and the 3-2 hole 413-2 can be the 1-2 hole.

[0272] According to an embodiment of the present specification, the vibration generating device corresponding to the first vibration generating device or / and the second vibration generating device can be connected to a vibration target (or a vibration member) to vibrate the vibration target (or the vibration member) and output sound. For example, the vibration target can include a vibration plate, and the vibration plate can include a metal material or one or more sheets or layers of any one or more non-metallic or composite non-metallic materials among wood, plastic, glass, cloth, fiber, paper, rubber, and leather. For example, the vibration target can include a display panel having a plurality of pixels for displaying an image, or can include any one non-display panel among a light-emitting diode lighting panel, an organic light-emitting lighting panel, and an inorganic light-emitting lighting panel. For example, the vibration target can include one or more of a vehicle interior material, a vehicle glass window, a building ceiling, a building glass window, a building interior material, an aircraft interior material, and an aircraft glass window.

[0273] According to the embodiment of the present specification, by configuring the first member 600, it is possible to provide a device capable of expanding the sound range, since the air impedance of the vibration device 500 can be controlled. And, since the device according to the embodiment of the present specification includes a film-type vibration device, it is possible to provide a device having improved sound pressure characteristics and / or acoustic characteristics including the high-frequency range, and since the thickness of the device can be reduced, it is possible to provide a device having a slim structure.

[0274] Fig. 17 is a diagram showing the vibration generator shown in Fig. 14. Referring to Fig. 17, a first vibration generator 513 of a device according to another embodiment of the present specification can include a vibration part (or vibration layer) (PE), a first electrode layer (E1), and a second electrode layer (E2). For example, the vibration part (PE) can be a piezoelectric device.

[0275] For example, the first vibration generator 513 may be disposed on the plate 511. In another embodiment of the present disclosure, the first vibration generator 513 may be attached to the plate 511 made of a metal material.

[0276] The vibration part (PE) may include a piezoelectric material having a piezoelectric effect. For example, the piezoelectric material may have a characteristic that a potential difference is generated by dielectric polarization due to a change in the relative positions of positive and negative ions when pressure or twisting is applied to the crystal structure due to an external force, and vibration is generated by an electric field due to a reversely applied voltage. The vibration part (PE) may be expressed by other terms such as, but not limited to, a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric vibration part, a piezoelectric material part, an electroactive part, a piezoelectric structure, an inorganic material layer, or an inorganic material part.

[0277] The vibration part (PE) is made of a piezoelectric material (or electroactive material) that is transparent, semi-transparent, or opaque, and may be transparent, semi-transparent, or opaque. The vibration part (PE) may be made of a ceramic-based material that can achieve relatively high vibration, or may be made of a piezoelectric ceramic having a perovskite-based crystal structure. The perovskite crystal structure may have a plate-like structure that has piezoelectric and inverse piezoelectric effects and has orientation. The perovskite crystal structure is an ABO 3 In the present specification, A is a divalent metal element, and B is a tetravalent metal element. 3 In the chemical formula, A and B can be cations, while O can be an anion. For example, ABO 3 The chemical formula is PbTiO 3 , PbZrO 3, PbZrTiO 3 , BaTiO 3 , and SrTiO 3 The present invention may include, but is not limited to, at least one of the following:

[0278] The vibration part (PE) according to the embodiment of the present specification may include one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), niobium (Nb), magnesium (Mg), manganese (Mn), and indium (In). According to another embodiment of the present specification, the vibration part (PE) may include, but is not limited to, a PZT (lead zirconate titanate)-based material including lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nikel niobate)-based material including lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb). According to another embodiment of the present specification, the vibrating part (PE) may include, but is not limited to, PMN (lead magnesium niobate)-based materials, PNN (lead nickel niobate)-based materials, PZN (lead zirconate niobate)-based materials, or PIN (lead indium niobate)-based materials. PMN-based materials may include lead (Pb), magnesium (Mg), and niobium (Nb), for example, Pb(Mg,Nb)O 3 The PNN-based material can include lead (Pb), nickel (Ni), and niobium (Nb), for example, Pb(Ni,Nb)O 3 The PIN-based material may include lead (Pb), indium (In), and niobium (Nb), for example, Pb(In,Nb)O 3 According to another embodiment of the present specification, the vibration part (PE) may be made of lead (Pb)-free CaTiO 3 , BaTiO 3 , and SrTiO 3 The present invention may include, but is not limited to, at least one of the following:

[0279] The vibration part (PE) according to the embodiments of the present specification is not limited to a rectangular shape as shown in FIG. 17, but may be configured in a circular shape, an elliptical shape, a polygonal shape having three or more sides, or various other shapes.

[0280] The first electrode layer (E1) may be disposed on a first surface (or upper surface) of the vibrating part (PE) and may be electrically connected to the first surface of the vibrating part (PE). For example, the first electrode layer (E1) may have a single electrode shape (or a common electrode) disposed over the entire first surface of the vibrating part (PE). For example, the first electrode layer (E1) may have the same shape as the vibrating part (PE), but is not limited thereto. The first electrode layer (E1) according to the embodiments of the present specification may be made of a transparent conductive material, a semi-transparent conductive material, or an opaque conductive material. For example, the transparent or semi-transparent conductive material may include, but is not limited to, ITO (indium tin oxide) or IZO (indium zinc oxide). The opaque conductive material may include, but is not limited to, aluminum (Al), copper (Cu), gold (Au), silver (Ag), molybdenum (Mo), magnesium (Mg), or the like, or may be made of an alloy thereof.

[0281] The second electrode layer (E2) may be disposed on a second surface (or back surface) opposite to the first surface of the vibrating part (PE) and may be electrically connected to the second surface of the vibrating part (PE). For example, the second electrode layer (E2) may have a single electrode shape (or a common electrode) disposed over the entire second surface of the vibrating part (PE). For example, the second electrode layer (E2) may have a larger size than the vibrating part (PE) and may have the same shape as the vibrating part (PE), but is not limited thereto. The second electrode layer (E2) according to the embodiment of the present specification may be made of a transparent conductive material, a semi-transparent 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. In another embodiment of the present specification, the second electrode layer (E2) may be made of a material different from that of the first electrode layer (E1).

[0282] The vibrating part (PE) may be polarized (or subjected to poling treatment) 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 that changes from high temperature to room temperature, but is not limited thereto. For example, the vibrating part (PE) may vibrate by alternately repeating contraction and expansion due to the inverse piezoelectric effect caused by a driving signal applied from the outside to the first electrode layer (E1) and the second electrode layer (E2).

[0283] Fig. 18 is another cross-sectional view of the connection structure of the device shown in Fig. 14 taken along line I-I' in Fig. 1. Fig. 19 is an enlarged view of part 'E' in Fig. 18. The device according to another embodiment of this specification shown in Figs. 18 and 19 is obtained by adding a connection member to the device according to the embodiment of this specification described with reference to Figs. 14 to 16. In the following description, except for the modified configuration and the configuration related thereto, duplicated descriptions of the remaining identical configurations will be briefly described or omitted.

[0284] 18 and 19, the 1-1 vibration device 510-1 according to another embodiment of the present specification may include a first plate 511 and a vibration generator 513. For example, the vibration generator (or the first vibration generator) 513 of the 1-1 vibration device 510-1 may be disposed on the back surface of the first plate 511 via the 7-1 connection member 517. The 2-1 vibration device 530-1 according to another embodiment of the present specification may include a second plate 531 and a vibration generator 533. The vibration generator (or the second vibration generator) 533 of the 2-1 vibration device 530-1 may be disposed on the back surface of the second plate 531 via the 7-2 connection member 537.

[0285] The device according to other embodiments of the present specification may further include eleventh connecting members 519 and 539. For example, the device according to other embodiments of the present specification may include an eleventh connecting member 519 and an eleventh connecting member 539. The eleventh connecting member 519 of the embodiment of the present specification may be the sixteenth connecting member, and the eleventh connecting member 539 of the embodiment of the present specification may be the seventeenth connecting member, but this number is not intended to limit the contents of the present specification.

[0286] The 11-1 connecting member 519 may be disposed between the second member 510-3 and the first plate 511. Thereby, the first plate 511 may be disposed on the second member 510-3 via the 11-1 connecting member 519. For example, the 11-1 connecting member 519 may be disposed on one side (or end) of the second member 510-3. For example, the 11-1 connecting member 519 may overlap one side (or end) of the second member 510-3. For example, the 11-1 connecting member 519 may be disposed on one side (or end) of the first plate 511. For example, the 11-1 connecting member 519 may overlap one side (or end) of the first plate 511. For example, the 11-1 connecting member 519 may be disposed between one side (or end) of the second member 510-3 and one side (or end) of the first plate 511. For example, the 11-1 connecting member 519 may overlap the first member 600. For example, the 11-1 connecting member 519 may overlap the 1-1 member 610. For example, the 11-1 connecting member 519 may overlap the bottom 611 of the 1-1 member 610. For example, the 11-1 connecting member 519 may overlap the 4-1 hole 510-3a, but is not limited thereto, and may not overlap the 4-1 hole 510-3a.

[0287] The 11-2 connecting member 539 may be disposed between the third member 530-3 and the second plate 531. Thereby, the second plate 531 may be disposed on the third member 530-3 via the 11-2 connecting member 539. For example, the 11-2 connecting member 539 may be disposed on one side (or end) of the third member 530-3. For example, the 11-2 connecting member 539 may overlap one side (or end) of the third member 530-3. For example, the 11-2 connecting member 539 may be disposed on one side (or end) of the second plate 531. For example, the 11-2 connecting member 539 may overlap one side (or end) of the second plate 531. For example, the 11-2 connecting member 539 may be disposed between one side (or end) of the third member 530-3 and one side (or end) of the second plate 531. For example, the 11-2 connecting member 539 may overlap the first member 600. For example, the 11-2 connecting member 539 may overlap the 1-2 member 630. For example, the 11-2 connecting member 539 may overlap the bottom 631 of the 1-2 member 630. For example, the 11-2 connecting member 539 may overlap the 5-1 hole 530-3a, but is not limited thereto, and may not overlap the 5-1 hole 530-3a.

[0288] The device according to another embodiment of the present specification may further include a third air gap (AG3). The third air gap (AG3) may be provided between the first cover 400 and each of the first-1 vibration device 510-1 and the second-1 vibration device 530-1. For example, the third air gap (AG3) may be provided between the first cover 400 and each of the first cover 400 and the rear part 410 of the first cover 400 and each of the first vibration generator 513 and the second vibration generator 533. The third air gap (AG3) can transmit the sound generated by the first cover 400 to the front of the device and ensure a vibration space for the first cover 400. In addition, the third air gap (AG3) can transmit the sound generated by the second-first vibration device 530-1 to the front of the device, and can secure a vibration space for the second-first vibration device 530-1. The third air gap (AG3) according to an embodiment of the present specification can include a third-first air gap (AG3a) and a third-second air gap (AG3b). The third-first air gap (AG3a) in the embodiment of the present specification can be a third air gap, and the third-second air gap (AG3b) in the embodiment of the present specification can be a fourth air gap, but this number does not limit the contents of the present specification.

[0289] The 3-1 air gap (AG3a) may be provided between the 1-1 vibration device 510-1 and the first cover 400. For example, the 3-1 air gap (AG3a) may be provided between the 1-1 vibration device 510-1 and the rear part 410 of the first cover 400. For example, the 3-1 air gap (AG3a) may be between the rear part 410 of the first cover 400 and the first vibration generator 513. For example, the 3-1 air gap (AG3a) can transmit the sound generated by the first vibration generator 513 to the front side of the device and ensure a vibration space for the first vibration generator 513.

[0290] The 3-2 air gap (AG3b) may be provided between the 2-1 vibration device 530-1 and the first cover 400. For example, the 3-2 air gap (AG3b) may be provided between the 2-1 vibration device 530-1 and the rear part 410 of the first cover 400. For example, the 3-2 air gap (AG3b) may be between the rear part 410 of the first cover 400 and the second vibration generator 533. For example, the 3-2 air gap (AG3b) can transmit the sound generated by the second vibration generator 533 to the front of the device, and ensure a vibration space for the 2-1 vibration device 530-1.

[0291] According to the embodiment of the present specification, since the third air gap (AG3) can be provided between the first cover 400 and the vibration device 500, a device with improved sound pressure characteristics and / or sound quality can be provided. According to the embodiment of the present specification, since the air impedance of the vibration device 500 can be controlled by configuring the first member 600, a device capable of expanding the sound range can be provided. And, since the device according to the embodiment of the present specification includes a film-type vibration device, a device with improved sound pressure characteristics and / or acoustic characteristics including the high-frequency range can be provided, and since the thickness of the device can be reduced, a device having a slim structure can be provided.

[0292] Fig. 20 is a graph showing sound pressure level characteristics of a device according to an embodiment of the specification. Fig. 21 is a graph showing another sound pressure level characteristic of a device according to an embodiment of the specification.

[0293] In Figures 20 and 21, the horizontal axis represents frequency (Hz) and the vertical axis represents sound pressure level (dB). In Figure 20, the dotted line represents sound pressure level characteristics measured with an apparatus that does not include a component, and the solid line represents sound pressure level characteristics measured with an apparatus that includes a component. In Figure 21, the dotted line represents sound pressure level characteristics measured with an apparatus that includes a component but does not include a second cover, and the solid line represents sound pressure level characteristics measured with an apparatus that includes a component and a second cover.

[0294] 20, it can be seen that the sound pressure level in the low frequency band (below about 300 Hz) measured when the first member 600 is included (solid line) is higher than the sound pressure level measured when the first member 600 is not included (dotted line). Therefore, by configuring the device with the first member 600 as in the examples of this specification, it is possible to improve the sound pressure characteristics and acoustic characteristics in the low frequency band.

[0295] 21, it can be seen that the sound pressure level characteristics measured when the first member 600 and the second cover 700 are included (solid line) are similar to the sound pressure level characteristics measured when the first member 600 is included but the second cover 700 is not included (dotted line) over the entire measurement frequency range. Therefore, by configuring the first member 600 in the device as in the examples of this specification, it is possible to generate sound having a consistent sound pressure level regardless of whether the second cover 700 is applied or not.

[0296] The vibration device according to the embodiments of the present specification can be applied to a vibration device disposed on a device. The apparatus according to the embodiments of the present specification may be applied to a mobile device, a video phone, a smart watch, a watch phone, a wearable apparatus, a foldable apparatus, a rollable apparatus, a bendable apparatus, a flexible apparatus, a curved apparatus, a sliding apparatus, a variable apparatus, an electronic organizer, an electronic book, a portable multimedia player (PMP), a personal digital assistant (PDA), an MP3 player, a mobile medical device, a desktop PC, a laptop PC, a netbook computer, a workstation, a navigation system, a vehicle navigation system, a vehicle device, a vehicle display device, a theater device, a theater display device, a television, a wallpaper device, a signage device, a game device, a notebook computer, a monitor, a camera, a video camera, and a home appliance. In addition, the vibration device according to the embodiment of the present 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. When the vibration device is applied to a mobile device, it may function as one or more of a speaker, a receiver, and a haptic, but is not limited thereto.

[0297] An apparatus according to an embodiment of the present specification can be described as follows.

[0298] An apparatus according to an embodiment of the present specification may include a vibrating member, a first cover arranged on a rear surface of the vibrating member and including a hole, a vibrating device arranged on the rear surface of the first cover and covering the hole, and a first member arranged on the rear surface of the first cover and covering the hole and the vibrating device.

[0299] According to some embodiments of the present disclosure, the vibration device may include a plate disposed on a rear surface of the first cover and covering the hole, and a vibration generator disposed on the rear surface of the plate.

[0300] According to some embodiments herein, the plate can have a second thickness that is less than the first thickness of the rear portion of the first cover.

[0301] According to some embodiments of the present specification, a vibration generator may include a vibration portion including a plurality of first portions of an inorganic material and a plurality of second portions of an organic material disposed between the plurality of first portions, a first electrode layer disposed on a first surface of the vibration portion, and a second electrode layer disposed on a second surface different from the first surface of the vibration portion.

[0302] According to some embodiments of the present specification, the vibration generator may include a vibration portion including a piezoelectric material, a first electrode layer disposed on a first surface of the vibration portion, and a second electrode layer disposed on a second surface different from the first surface of the vibration portion.

[0303] According to some embodiments herein, the plate may have a cambered shape toward the hole or a cambered shape away from the hole.

[0304] According to some embodiments herein, the plate may include other holes that overlap the holes.

[0305] According to some embodiments of the present specification, the holes include a 1-1 hole and a 1-2 hole, the 1-1 hole is disposed in a first region of the first cover, the 1-2 hole is disposed in a second region of the first cover, the vibration device includes a first vibration device disposed in the first region and covering the 1-1 hole, and a second vibration device disposed in the second region and covering the 1-2 hole, and the first member includes a 1-1 member covering the first vibration device and the 1-1 hole, and a 1-2 member covering the second vibration device and the 1-2 hole.

[0306] According to some embodiments of the present disclosure, the 1-1 member may have a symmetrical structure to the 1-2 member with respect to the midline of the vibration member.

[0307] According to some embodiments of the present specification, the 1-1 member may include a bottom portion disposed on the rear surface of the first vibration device and covering the rear surface of the first vibration device, and a side portion disposed on a side surface of the first vibration device and covering the side surface of the first vibration device. The side portion of the 1-1 member may be connected to one side of the bottom portion of the 1-1 member and disposed along an edge of the bottom portion of the 1-1 member. The 1-2 member may include a bottom portion disposed on the rear surface of the second vibration device and covering the rear surface of the second vibration device, and a side portion disposed on a side surface of the second vibration device and covering the side surface of the second vibration device. The side portion of the 1-2 member may be connected to one side of the bottom portion of the 1-2 member and disposed along an edge of the bottom portion of the 1-2 member.

[0308] According to some embodiments of the present specification, the first vibration device may be arranged in the first region and may include a first plate covering the 1-1 hole and a first vibration generator arranged on the back surface of the first plate, and the second vibration device may be arranged in the second region and may include a second plate covering the 1-2 hole and a second vibration generator arranged on the back surface of the second plate.

[0309] According to some embodiments herein, the first plate may include a 2-1 hole overlapping with the 1-1 hole, and the second plate may include a 2-2 hole overlapping with the 1-2 hole.

[0310] According to some embodiments of the present specification, the first plate may have a shape warped toward the 1-1 hole or a shape warped in the opposite direction of the 1-1 hole, and the second plate may have a shape warped toward the 1-2 hole or a shape warped in the opposite direction of the 1-2 hole.

[0311] According to some embodiments of the present specification, at least one of the first vibration generator and the second vibration generator may include a vibration portion including a plurality of first portions of an inorganic material and a plurality of second portions of an organic material disposed between the plurality of first portions, a first electrode layer disposed on a first surface of the vibration portion, and a second electrode layer disposed on a second surface different from the first surface of the vibration portion.

[0312] According to some embodiments of the present specification, at least one of the first vibration generator and the second vibration generator may further include a first protective member disposed on the first electrode layer and covering the first electrode layer, and a second protective member disposed below the second electrode layer and covering the second electrode layer.

[0313] According to some embodiments of the present specification, at least one of the first vibration generator and the second vibration generator may include a first power supply line arranged on a back surface of a first protective member facing the vibration portion and electrically connected to the first electrode layer, a second power supply line arranged on a front surface of a second protective member facing the vibration portion and electrically connected to the second electrode layer, and a pad portion electrically connected to each of the first power supply line and the second power supply line.

[0314] According to some embodiments of the present specification, at least one of the first vibration generator and the second vibration generator may include a vibration portion including a piezoelectric material, a first electrode layer disposed on a first surface of the vibration portion, and a second electrode layer disposed on a second surface different from the first surface of the vibration portion.

[0315] According to some embodiments herein, the holes include a 3-1 hole and a 3-2 hole, the 3-1 hole is disposed in a first region of the first cover, the 3-2 hole is disposed in a second region of the first cover, the vibration device includes a first vibration device disposed in the first region and covering the 3-1 hole, and a second vibration device disposed in the second region and covering the 3-2 hole, and the first member includes a 1-1 member covering the first vibration device and the 3-1 hole, and a 1-2 member covering the second vibration device and the 3-2 hole.

[0316] According to some embodiments of the present specification, the first vibration device may include a 1-1 vibration device arranged in the first region and a 1-2 vibration device arranged in the first region and covering the 3-1 hole, and the second vibration device may include a 2-1 vibration device arranged in the second region and a 2-2 vibration device arranged in the second region and covering the 3-2 hole.

[0317] According to some embodiments of the present specification, the 1-1 vibration device may include a first plate arranged in a first region and a first vibration generator arranged on a rear surface of the first plate, or may include a first vibration generator arranged in the first region and a first plate arranged on a rear surface of the first vibration generator, and the 2-1 vibration device may include a second plate arranged in a second region and a second vibration generator arranged on a rear surface of the second plate, or may include a second vibration generator arranged in the second region and a second plate arranged on the rear surface of the second vibration generator.

[0318] According to some embodiments of the present specification, at least one of the first vibration generator and the second vibration generator may include a vibration portion including a plurality of first portions of an inorganic material and a plurality of second portions of an organic material disposed between the plurality of first portions, a first electrode layer disposed on a first surface of the vibration portion, and a second electrode layer disposed on a second surface different from the first surface of the vibration portion.

[0319] According to some embodiments of the present specification, at least one of the first vibration generator and the second vibration generator may include a vibration portion including a piezoelectric material, a first electrode layer disposed on a first surface of the vibration portion, and a second electrode layer disposed on a second surface different from the first surface of the vibration portion.

[0320] According to some embodiments herein, each of the first-second vibration device and the second-second vibration device may be a coil-type vibration device.

[0321] According to some embodiments of the present specification, the first vibration device may further include a second member arranged in the first region, and the first-second vibration device may be arranged on a rear surface of the second member, and the second vibration device may further include a third member arranged in the first region, and the second-second vibration device may be arranged on a rear surface of the third member.

[0322] According to some embodiments of the present specification, the second member may include a 4-1 hole corresponding to the 1-1 vibration device and a 4-2 hole corresponding to the 1-2 vibration device, and the third member may include a 5-1 hole corresponding to the 2-1 vibration device and a 5-2 hole corresponding to the 2-2 vibration device.

[0323] According to some embodiments herein, the 4-2 hole may correspond to the 3-1 hole, and the 5-2 hole may correspond to the 3-2 hole.

[0324] According to some embodiments herein, the vibrating member may include one or more of a display panel having a plurality of pixels for displaying an image, a light emitting diode lighting panel, an organic light emitting lighting panel, and an inorganic light emitting lighting panel.

[0325] According to some embodiments herein, the vibrating member may comprise a metal or may comprise one or more of the following single or composite non-metallic materials: wood, rubber, plastic, glass, fiber, cloth, paper, and leather.

[0326] According to some embodiments herein, the vibrating member may include one or more of a display panel having a plurality of pixels for displaying an image, a screen panel onto which an image is projected from a display device, a lighting panel, a signage panel, an interior material of a vehicle, a glass window of a vehicle, an exterior material of a vehicle, a ceiling material of a building, an interior material of a building, a glass window of a building, an interior material of an aircraft, a glass window of an aircraft, metal, wood, rubber, plastic, glass, fiber, cloth, paper, leather, and a mirror.

[0327] According to some embodiments of the present specification, the display device may further include a display member including a display panel that displays images, and the display member may include a backlight disposed on the rear side of the display panel, and a guide member between the display panel and the backlight.

[0328] According to some embodiments herein, the display panel may be further configured to sense a touch applied to the display member, or may be further configured to output sound through vibration of a vibration device, or may be further configured to generate haptic feedback in response to the touch.

[0329] According to some embodiments of the present specification, the display device may further include a display member including a display panel that displays images, a front member arranged on a front side of the display member, and a second cover arranged on a rear side of the first cover and housing the display member, the first cover, the vibration device, and the first member.

[0330] According to some embodiments of the present disclosure, the second cover may include a cover box that provides a sealed space between the first cover rear portion and the second cover rear portion.

[0331] According to some embodiments herein, the vibration device may be a film-type vibration device.

[0332] According to some embodiments herein, the device may further include an air gap disposed between the first cover and the vibration device.

[0333] A vibration generating device according to an embodiment of the present specification may include a first member including a first hole and a second hole, a first vibration device arranged in the first hole, a second vibration device arranged in the second hole, and a second member connected to a rear surface of the vibration member and covering the first member and the first vibration device and the second vibration device.

[0334] According to some embodiments of the present specification, a first vibration device can output a first sound pressure to the vibration member through a first hole, and a second vibration device can output a second sound pressure different from the first sound pressure to the vibration member through a second hole.

[0335] According to some embodiments herein, the first vibration device may be a vibration generator having a piezoelectric element, and the second vibration device may be a coil-type vibration generator.

[0336] According to some embodiments of the present specification, the first vibration device can be disposed between the first member and the second member and cover the first hole, and the second vibration device can be disposed between the first member and the second member and cover the second hole.

[0337] According to some embodiments of the present specification, the second member may include the first member, a bottom portion covering the back sides of the first vibration device and the second vibration device, and the first member, a side portion disposed on an edge of the bottom portion so as to cover the side sides of the first vibration device and the second vibration device, and connected to the vibration member.

[0338] According to some embodiments herein, the second member may further include a through hole disposed at a bottom and overlapping with the first vibrating device.

[0339] According to some embodiments herein, the first vibration device may include a plate covering the first hole, and a vibration generator disposed between the plate and the second member.

[0340] According to some embodiments of the present disclosure, the plate may have a curved shape toward the first hole or a curved shape away from the first hole.

[0341] According to some embodiments herein, the first vibration device may be a film-type vibration device.

[0342] Although the embodiments of the present specification have been described in detail above with reference to the attached drawings, the present specification is not necessarily limited to these embodiments, and various modifications can be made within the scope of the technical idea of ​​the present specification. Therefore, the embodiments disclosed in the present specification are for illustration purposes, not for limiting the technical idea of ​​the present specification, and the scope of the technical idea of ​​the present specification is not limited by such embodiments. Therefore, the above-described embodiments should be understood as illustrative and not restrictive in all respects. The scope of protection of the present specification should be interpreted according to the claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present specification. [Explanation of symbols]

[0343] 100: Front material 200: Display member 300: Guide member 400: First cover 500: Vibration device 510: 1st vibration device 510-1: No. 1-1 vibration device 510-2: 1st-2nd vibration device 530:Second vibration device 530-1: 2nd-1 vibration device 530-2: No. 2-2 vibration device 600: First member

Claims

1. A vibrating member; a first cover disposed on a rear surface of the vibration member and including a hole; a vibration device disposed on a rear surface of the first cover and covering the hole; a first member disposed on a rear surface of the first cover and covering the hole and the vibration device; a second cover disposed on a rear surface of the first member and covering the vibration member, the first cover, the vibration device, and the first member; Including, the first member includes a bottom portion and a side portion connected to an end of the bottom portion; The side of the first member is connected to the back of the first cover.

2. The vibration device is a plate disposed on a rear surface of the first cover and covering the hole; a vibration generator disposed on the rear surface of the plate; The apparatus of claim 1 , comprising:

3. The vibration generator includes: a vibration section including a plurality of first portions of an inorganic material and a plurality of second portions of an organic material disposed between the plurality of first portions; A first electrode layer disposed on a first surface of the vibration portion; a second electrode layer disposed on a second surface different from the first surface of the vibration portion; The apparatus of claim 2 , comprising:

4. The vibration generator includes: A vibration part including a piezoelectric material; A first electrode layer disposed on a first surface of the vibration portion; a second electrode layer disposed on a second surface different from the first surface of the vibration portion; The apparatus of claim 2 , comprising:

5. The apparatus of claim 2 , wherein the plate has a curved shape toward or away from the hole.

6. The apparatus of claim 2 , wherein the plate includes another hole that overlaps the hole.

7. The holes include a 1-1 hole and a 1-2 hole, the 1-1 hole is disposed in a first region of the first cover, and the 1-2 hole is disposed in a second region of the first cover; The vibration device includes a first vibration device disposed in the first region and covering the 1-1 hole, and a second vibration device disposed in the second region and covering the 1-2 hole, The device of claim 1 , wherein the first member includes a 1-1 member covering the first vibration device and the 1-1 hole, and a 1-2 member covering the second vibration device and the 1-2 hole.

8. The first vibration device is a first plate disposed in the first region and covering the first-1 hole; and a first vibration generator disposed on a rear surface of the first plate. Including, The second vibration device is a second plate disposed in the second region and covering the first-second hole; a second vibration generator disposed on a rear surface of the second plate; The apparatus of claim 7 , comprising:

9. the first plate includes a second-1 hole overlapping the first-1 hole, The apparatus of claim 8 , wherein the second plate includes a 2-2 hole that overlaps the 1-2 hole.

10. the first plate has a shape warped toward the 1-1 hole or a shape warped in a direction opposite to the 1-1 hole; The apparatus according to claim 8 , wherein the second plate has a shape warped toward the first-second hole or in a direction opposite to the first-second hole.

11. At least one of the first vibration generator and the second vibration generator is a vibration section including a plurality of first portions of an inorganic material and a plurality of second portions of an organic material disposed between the plurality of first portions; A first electrode layer disposed on a first surface of the vibration portion; a second electrode layer disposed on a second surface different from the first surface of the vibration portion; The apparatus of claim 8 , comprising:

12. At least one of the first vibration generator and the second vibration generator is A vibration part including a piezoelectric material; A first electrode layer disposed on a first surface of the vibration portion; a second electrode layer disposed on a second surface different from the first surface of the vibration portion; The apparatus of claim 8 , comprising:

13. 13. The apparatus of claim 1, wherein the vibrating member comprises one or more of a display panel having a plurality of pixels for displaying an image, a light emitting diode lighting panel, an organic light emitting lighting panel, and an inorganic light emitting lighting panel.

14. 13. An apparatus according to any one of claims 1 to 12, wherein the vibrating member comprises a metal or one or more of the following single or composite non-metallic materials: wood, rubber, plastic, glass, textile, cloth, paper, and leather.

15. The device of any one of claims 1 to 12, wherein the vibrating member includes one or more of a display panel having a plurality of pixels for displaying an image, a screen panel onto which an image is projected from a display device, a lighting panel, a signage panel, an interior material of a vehicle, a glass window of the vehicle, an exterior material of the vehicle, a ceiling material of a building, an interior material of the building, a glass window of the building, an interior material of an aircraft, a glass window of the aircraft, and a mirror.

16. Further comprising a display member including a display panel for displaying an image; The device according to any one of claims 1 to 12, wherein the display member includes a backlight disposed on a rear surface of the display panel, and a guide member between the display panel and the backlight.

17. A display member including a display panel for displaying an image; a front member disposed in front of the display member; The apparatus of any one of claims 1 to 12, further comprising:

Images