Display device

Abstract

To provide a display device that generates sound traveling toward the front of a display module.SOLUTION: A display device includes a display module 100 including a display panel for displaying images, a support member 300 arranged on the rear surface of the display module, and a first vibration generating module arranged on the support member 300 arranged on the rear surface of the display module 100, and including a first vibration generating module 410 outputting a first sound S1 and a second vibration generating module 420 outputting a second sound S2 in different sound ranges. The first sound S1 is a low-frequency sound of 200 Hz or less, and the second sound S2 is a mid-frequency sound of 200 Hz to 3 kHz or less or a mid-frequency sound of 200 Hz to 3 kHz or less and a mid-high frequency sound of 3 kHz or more.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present specification relates to a display device, and more particularly to a display device having a display panel that outputs sound. [Background technology]

[0002] Display devices are used as screens for displaying images in electronic products and home appliances such as televisions, monitors, laptops, smartphones, tablet computers, electronic pads, wearable devices, watch phones, mobile information devices, navigation systems, or vehicle control display devices.

[0003] The display device may include a display panel for displaying images and an audio device for outputting audio associated with the images.

[0004] However, in a display device, sound output from a sound device travels behind or below the display panel, and sound quality deteriorates due to interference between sounds reflected from walls and floors, which makes it difficult to transmit sound accurately and reduces the viewer's sense of immersion. Summary of the Invention

[0005] The inventors of the present specification recognized the problems with the display device described above and conducted several experiments to improve the sound quality or sound pressure by making the sound travel direction toward the front of the display panel when viewing an image from the front of the display panel. Through the experiments, they invented a display device with a new structure that can generate sound that can travel forward from the display panel and improve the sound quality or sound pressure.

[0006] One aspect of the present disclosure is to provide a display device that can improve sound quality and enhance the sense of immersion for the viewer.

[0007] Another aspect of the present disclosure is to provide a display device that can generate sound that can travel in a front direction of the display module.

[0008] The problem to be solved by the embodiments of this specification is to provide a display device that can generate sound that can travel in the front and side directions of the display module and can improve sound pressure.

[0009] In addition to the technical problems of the present invention described above, other features and advantages of the present invention will be clearly understood by those skilled in the art from the following description and explanations. [Means for solving the problem]

[0010] A display device according to an embodiment of the present specification may include a display module including a display panel that displays images, a support member arranged on the rear surface of the display module, and a first vibration generating module arranged on the rear surface of the display module and outputting sounds in different frequency ranges.

[0011] A display device according to an embodiment of the present specification may include a display module including a display panel that displays images, a support member arranged on the rear surface of the display module, and a vibration generating module arranged on the rear surface of the display module and including at least two vibration generating devices having different sound range bands from the center to the end (or edge) of the display module based on the horizontal direction of the display module. [Effects of the Invention]

[0012] According to the embodiments of the present specification, it is possible to provide a display device capable of outputting sound in the front and side directions of a display module.

[0013] According to the embodiments of the present specification, by configuring a vibration generating module that can output sounds in different frequency ranges, it is possible to output sounds in the low, mid, and high frequency ranges, thereby providing a display device with improved sound pressure.

[0014] According to the embodiments of the present specification, vibration generating modules including vibration generating devices that output different sound ranges can be modularized, thereby improving the flexibility in arranging the vibration generating modules.

[0015] In addition to the effects of the present specification described above, other features and advantages of the present specification will be described below or will be clearly understood by those skilled in the art from such descriptions and explanations. [Brief explanation of the drawings]

[0016] [Figure 1] 1 illustrates a display device according to an embodiment of the present disclosure; [Figure 2] 1 is a diagram illustrating a vibration generating module according to an embodiment of the present specification. [Figure 3] 10A and 10B are diagrams illustrating a vibration generating module according to another embodiment of the present specification. [Figure 4] FIG. 2 is a cross-sectional view taken along line II' shown in FIG. [Figure 5] FIG. 10 is a diagram illustrating a rear view of a support member according to an embodiment of the present specification. [Figure 6] 1 illustrates a display device according to an embodiment of the present disclosure; [Figure 7] 10A and 10B are diagrams illustrating a vibration generating module according to another embodiment of the present specification. [Figure 8] 10A and 10B are diagrams illustrating a vibration generating module according to another embodiment of the present specification. [Figure 9] 2 is another cross-sectional view taken along the line II' in FIG. 1. FIG. [Figure 10] FIG. 10 is a view showing the rear surface of a support member according to another embodiment of the present specification. [Figure 11]10 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 12] FIG. 10 is an exploded view of a display device according to another embodiment of the present disclosure. [Figure 13A] 13A to 13F are views showing the rear surface of the support member. [Figure 13B] 13A to 13F are views showing the rear surface of the support member. [Figure 13C] 13A to 13F are views showing the rear surface of the support member. [Figure 13D] 13A to 13F are views showing the rear surface of the support member. [Figure 13E] 13A to 13F are views showing the rear surface of the support member. [Figure 13F] 13A to 13F are views showing the rear surface of the support member. [Figure 14] 1 is a diagram illustrating a vibration generating module according to an embodiment of the present specification. [Figure 15] FIG. 15 is a cross-sectional view taken along line II-II' shown in FIG. [Figure 16A] 15 is a diagram showing the vibration generating module of FIG. 14 in a state where both ends are warped upward. [Figure 16B] 15 is a diagram showing the vibration generating module of FIG. 14 in a state where both ends are warped downward. [Figure 17] 10A and 10B are diagrams illustrating a vibration generating module according to another embodiment of the present specification. [Figure 18] 10A and 10B are diagrams illustrating a vibration generating module according to another embodiment of the present specification. [Figure 19] 10A and 10B are diagrams illustrating a vibration generating module according to another embodiment of the present specification. [Figure 20A] FIG. 20A is a diagram showing the positions at which electromagnetic exciter devices according to other embodiments of the present specification are arranged. [Figure 20B] FIG. 20B is a diagram showing the positions at which electromagnetic exciter devices according to other embodiments of the present specification are arranged. [Figure 20C] FIG. 20C is a diagram showing the positions at which electromagnetic exciter devices according to other embodiments of the present specification are arranged. [Figure 20D] FIG. 20D is a diagram showing the positions at which electromagnetic exciter devices according to other embodiments of the present specification are arranged. [Figure 21] FIG. 10 is a diagram showing sound pressure of a vibration generator according to another embodiment of the present specification. [Figure 22A] FIG. 22A is a diagram showing acoustic velocities of an electromagnetic exciter according to another embodiment of the present specification. [Figure 22B] FIG. 22B is a diagram showing acoustic velocities of an electromagnetic exciter according to another embodiment of the present specification. [Figure 23] FIG. 10 is a diagram showing acoustic output characteristics of a vibration generating module according to another embodiment of the present specification. [Figure 24A] FIG. 24A is another cross-sectional view taken along line II' shown in FIG. 1 according to another embodiment of the present specification. [Figure 24B] FIG. 24B is another cross-sectional view of line II' shown in FIG. 1 according to another embodiment of the present specification. [Figure 25A] FIG. 25A is another cross-sectional view taken along line II' shown in FIG. 1 according to another embodiment of the present specification. [Figure 25B] FIG. 25B is another cross-sectional view taken along line II' shown in FIG. 1 according to another embodiment of the present specification. [Figure 26A] FIG. 26A illustrates a vibration generating module and a partition according to an embodiment of the present disclosure. [Figure 26B] FIG. 26B illustrates a vibration generating module and a partition according to an embodiment of the present disclosure. [Figure 26C] FIG. 26C illustrates a vibration generating module and a partition according to an embodiment of the present disclosure. [Figure 27A] FIG. 27A is a diagram showing a vibration generating module and a partition according to another embodiment of the present specification. [Figure 27B] FIG. 27B is a diagram showing a vibration generating module and a partition according to another embodiment of the present specification. DETAILED DESCRIPTION OF THE INVENTION

[0017] The advantages and features of the present invention, and methods for achieving them, will become clearer with reference to the following examples, which are described in detail with reference to the accompanying drawings. However, the present invention is not limited to the examples disclosed below, and may be realized in various different forms. The examples are provided solely to complete the disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art to which the present invention pertains. The present invention is defined solely by the scope of the claims.

[0018] The shapes, sizes, ratios, angles, numbers, etc. shown in the drawings are for illustrative purposes only and are not intended to limit the scope of the present specification. The same reference numerals refer to the same components throughout the specification. Furthermore, in describing the present specification, if a detailed description of related prior art is deemed to unnecessarily obscure the gist of the present invention, that detailed description will be omitted.

[0019] When the terms "comprise," "have," "consist of," etc. are used as mentioned in this specification, other parts can be added unless "only" is used. When an element is expressed in the singular, it also includes plural unless otherwise expressly stated.

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

[0021] When describing a positional relationship, for example, when the positional relationship of two parts is described using "above," "on top," "below," or "beside," one or more other parts may 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," or "before," it can also include cases where the sequence is not consecutive, as long as "immediately" or "directly" is not used.

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

[0024] The term "at least one" should be understood to include all possible combinations of one or more of the associated items. For example, "at least one of the first, second, and third items" may mean not only the first, second, or third item individually, but also all possible combinations of the first, second, and third items that can be present in two or more of the first, second, and third items.

[0025] The features of each of the examples in this specification can be partially or fully combined or combined with each other, and various technical interlocking and driving mechanisms are possible, and each example can be implemented independently of each other, or can be implemented together in a related relationship.

[0026] Hereinafter, examples of display devices according to embodiments of the present specification will be described in detail with reference to the accompanying drawings. When assigning reference numerals to components in each drawing, identical components may be assigned the same numerals as much as possible even if they are displayed in different drawings. Furthermore, the scales of the components shown in the accompanying drawings may be different from the actual scales for convenience of explanation, but are not limited to the scales shown in the drawings.

[0027] A display device according to an embodiment of the present specification may include a vibration generator. When the vibration generator is configured as a vibration generator including a voice coil, it is difficult to ensure high-frequency sound. To solve this problem, a piezoelectric vibration generator made of a piezoelectric element or piezoelectric material having a piezoelectric effect (or inverse piezoelectric characteristics) with a strong high-frequency output may be further included. When a piezoelectric vibration generator is further included, a separate component is required to generate an acoustic signal from the piezoelectric vibration generator, which increases costs. Furthermore, the low impedance of the piezoelectric vibration generator limits amplifier output, resulting in reduced sound pressure. When a vibration generator including a voice coil and a piezoelectric vibration device are configured together, it is difficult to ensure stable sound pressure due to changes in the sound pressure characteristics of the vibration device including the voice coil and the piezoelectric vibration device. Therefore, the inventors of the present specification conducted several experiments to realize a vibration generator capable of improving sound pressure. Through these experiments, they invented a display device with a new structure, which will be described below.

[0028] FIG. 1 is a diagram illustrating a display device according to an embodiment of the present specification.

[0029] Referring to FIG. 1 , a display device according to an embodiment of the present disclosure may output a first sound (S1) and a second sound (S2) by vibrating a display module 100 to display an image. For example, the image may include an electronic image or a digital image. For example, in a display device, the display module 100 may be vibrated by a vibration generator (or a sound generator) to generate the first sound (S1) and the second sound (S2). The first sound (S1) and the second sound (S2) generated by the vibration of the display module 100 may be output toward the forward facing screen (FD) of the display device. Therefore, the display device according to an embodiment of the present disclosure may use the display module 100 as a diaphragm for sound generation to output the first sound (S1) and the second sound (S2) toward the forward facing screen (FD) of the display module 100, thereby enabling sound transmission, improving sound quality, and enhancing a viewer's immersive experience.

[0030] Fig. 2 is a diagram showing a vibration generating module according to an embodiment of the present specification. Fig. 3 is a diagram showing a vibration generating module according to another embodiment of the present specification. Fig. 4 is a cross-sectional view taken along line II' in Fig. 1.

[0031] 2 to 4, a display device according to an embodiment of the present specification may include a display module 100, a panel guide 200, a support member 300, and first and second vibration generating modules 400 and 500.

[0032] The display module 100 may be, but is not limited to, a liquid crystal display module, such as an emissive display module, an electrophoretic display module, a micro-light-emitting diode display module, an electrowetting display module, or a quantum dot emissive display module.

[0033] The support member 300 may cover the rear surface of the display module 100 while supporting the panel guide 200. The support member 300 may also support the first and second vibration generating modules 400 and 500. The support member 300 according to the embodiments of the present specification may function as a diaphragm and may include, but is not limited to, a metal material or a metal alloy material. For example, the support member 300 may be made of, but is not limited to, any one of iron (Fe), aluminum (Al), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, and aluminum (Al) alloy.

[0034] The support member 300 according to an embodiment of the present specification may include a rear portion (or back portion) 310 that supports the rear of the display module 100, and a side portion 330 that is connected to an end region (or edge region) of the rear portion 310 and supports the panel guide 200.

[0035] The rear part 310 of the support member 300 according to the embodiment of the present specification is disposed to cover the rear surface of the display module 100 and can support the display module 100. The rear part 310 of the support member 300 can support the backlight 130 of the display module 100 and the first and second vibration generating modules 400 and 500. For example, the rear part 310 can contact the rear surface of the reflective sheet 133 and thereby transfer sound vibrations generated by vibrations of the first and second vibration generating modules 400 and 500 to the reflective sheet 133 of the backlight 130.

[0036] The side portion 330 of the support member 300 may be bent from an end (or edge) of the rear portion 310 to support the panel guide 200. The side portion 330 may provide a storage space for the backlight 130 and surround the side of the backlight 130 stored (or supported) in the storage space for the backlight 130. The side portion 330 may play a role in transmitting sound vibrations generated in the rear portion 310 by the first and second vibration generating modules 400 and 500 to the panel guide 200.

[0037] The display device according to the embodiment of the present specification may further include a system back cover 600 disposed on the back surface of the support member 300 .

[0038] The system rear cover (or back cover) 600 may house the display module 100 in which the first and second vibration generating modules 400 and 500 are arranged, and may enclose the sides of the display module 100. For example, the system rear cover 600 may be expressed as a set cover, a rear set cover, an outermost set cover, a product cover, or an outermost product cover, but is not limited to these terms.

[0039] Referring to FIG. 4, a display panel 110 according to an embodiment of the present disclosure may include an upper substrate 111, a lower substrate 113, a lower polarizing member 115, and an upper polarizing member 117.

[0040] The upper substrate 111 may be a first substrate or a thin film transistor array substrate, and may include a pixel array (or display unit or display region) having a plurality of pixels formed in a pixel region intersected by a plurality of gate lines and / or a plurality of data lines. Each of the plurality of pixels may include a thin film transistor connected to the gate line and / or the data line, a pixel electrode connected to the thin film transistor, and a common electrode formed adjacent to the pixel electrode and to which a common voltage is supplied.

[0041] The upper substrate 111 may further include a pad section provided at the first end (or the first non-display section or the first edge region) and a gate driving circuit provided at the second end (or the second non-display section or the second edge region).

[0042] The pad portion may supply externally supplied signals to the pixel array and / or the gate driving circuit. For example, the pad portion may include a plurality of data pads connected to a plurality of data lines via a plurality of data link lines and / or a plurality of gate input pads connected to the gate driving circuit via a gate control signal line. For example, a first end (or a first edge) of the upper substrate 111 including the pad portion may protrude from a side surface corresponding to the first end (or first edge) of the lower substrate 113, and the pad portion may be exposed in a rear direction toward the support member 300. For example, the size of the upper substrate 111 may be larger than that of the lower substrate 113, but is not limited thereto.

[0043] The gate driving circuit according to the embodiment of the present specification may be built into (or integrated with) the second end (or second edge) of the upper substrate 111 so as to connect to a plurality of gate lines. For example, the gate driving circuit may be realized as a shift register including transistors formed by the same process as the thin film transistors provided in the pixel region. In other examples, the gate driving circuit may be realized in the form of an integrated circuit without being built into the upper substrate 111 and may be included in the panel driving circuit.

[0044] The lower substrate 113 is a second substrate or a color filter array substrate, and may include a pixel pattern that may include opening regions overlapping pixel regions formed on the upper substrate 111, and a color filter layer formed in the opening regions. The lower substrate 113 according to the embodiment of the present specification may have a smaller size than the upper substrate 111, but is not limited thereto. For example, the lower substrate 113 may overlap with the remaining portion of the upper substrate 111 excluding a first end (or first edge). The lower substrate 113 may be bonded to the remaining portion of the upper substrate 111 excluding a first end (or first edge) with a liquid crystal layer sandwiched between them using a sealant.

[0045] The liquid crystal layer is interposed between the upper substrate 111 and the lower substrate 113, and may be made of liquid crystal whose alignment direction changes depending on an electric field formed by a data voltage and a common voltage applied to a pixel electrode for each pixel.

[0046] The lower polarizing member 115 is attached to the lower surface of the lower substrate 113 and can polarize light incident from the backlight 130 and traveling to the liquid crystal layer.

[0047] The upper polarizing member 117 is attached to the upper surface of the upper substrate 111 and can polarize light that passes through the upper substrate 111 and is emitted to the outside.

[0048] The display panel 110 according to an embodiment of the present specification can display an image based on light passing through the liquid crystal layer by driving the liquid crystal layer with an electric field formed for each pixel by a data voltage and a common voltage applied to each pixel.

[0049] In the display panel 110 according to the embodiment of the present specification, the upper substrate 111 made of a thin film transistor array substrate forms an image display surface, so that the entire front surface can be exposed to the outside without being blocked by a separate mechanism.

[0050] In the display panel 110 according to another embodiment of the present disclosure, the upper substrate 111 may be a color filter array substrate, and the lower substrate 113 may be a thin film transistor array substrate. For example, the display panel 110 according to another embodiment of the present disclosure may have a shape obtained by inverting the display panel 110 according to the embodiment of the present disclosure. In this case, the pad portion of the display panel 110 according to another embodiment of the present disclosure may be blocked by a separate mechanism.

[0051] The display module 100 according to an embodiment of the present disclosure may further include a buffer member 150. The buffer member 150 may be formed to surround the side of the display panel 110. The buffer member 150 may be formed to cover each side and each corner of the display panel 110. The buffer member 150 may protect the side of the display panel 110 from external impact and prevent light leakage from the side of the display panel 110. The buffer member 150 according to an embodiment of the present disclosure may be made of a silicone-based or ultraviolet (UV) curable sealant (or resin). When considering the process tact time, the buffer member 150 may be made of an ultraviolet (UV) curable sealant. The buffer member 150 according to an embodiment of the present disclosure may be colored, for example, but not limited to, blue, red, cyan, or black. For example, the buffer member 150 may be made of a colored resin or a light-blocking resin to prevent light leakage from the side.

[0052] According to an embodiment of the present disclosure, a portion of the upper surface of the buffer member 150 may be covered by the upper polarizing member 117. In this case, the upper polarizing member 117 may include an extension portion that extends from a surface corresponding to the outer surface of the upper substrate 111 and is attached to a portion of the front surface of the buffer member 150 so as to cover a portion of the front surface of the buffer member 150. The bonding surface between the buffer member 150 and the upper substrate 111 (or the boundary between the buffer member 150 and the upper substrate 111) is concealed by the extension portion of the upper polarizing member 117 and is therefore not exposed to the front of the display device where a viewer is positioned. If the buffer member 150 is not formed, the front surface of the display panel 110 would be exposed to the front (FD) of the display device without being blocked by a separate mechanism, which may result in light leakage from the side of the display panel 110. Therefore, in a display device having a structure in which the entire front surface of the display panel 110 is exposed to the forward direction (FD) in order to eliminate or minimize the bezel width of the display device, the buffer member 150 may be configured to prevent light leakage from the side of the display panel 110 and protect the side of the display panel 110. Alternatively, the buffer member 150 may be omitted.

[0053] The backlight 130 is disposed on the rear surface of the display panel 110 and can irradiate light onto the rear surface of the display panel 110. The backlight 130 according to the embodiment of the present specification may include a light guide plate 131, a light source unit, a reflective sheet 133, and an optical sheet unit 135.

[0054] The light guide plate 131 is disposed on the support member 300 so as to overlap the display panel 110, and may include a light incident surface provided on at least one side. The light guide plate 131 may include a light-transmitting plastic or glass material. The light guide plate 131 can direct light incident from the light source unit through the light incident surface toward (or exit from) the display panel 110. For example, the light guide plate 131 may be expressed as a light guide member or a flat light source, but is not limited to these terms.

[0055] The light source unit may irradiate light onto a light incident surface provided on the light guide plate 131. The light source unit may be disposed on the support member 300 so as to overlap with a first end (or a first edge) of the display panel 110. The light source unit according to the embodiments of the present specification may include a plurality of light emitting diode elements that are implemented on a light source printed circuit board and irradiate light onto the light incident surface of the light guide plate 131.

[0056] The reflective sheet 133 may be disposed on the support member 300 so as to cover the rear surface of the light guide plate 131. The reflective sheet 133 may reflect light incident from the light guide plate 131 back toward the light guide plate 131, thereby minimizing light loss.

[0057] The optical sheet unit 135 is disposed on the front surface of the light guide plate 131 to improve the brightness characteristics of light output from the light guide plate 131. The optical sheet unit 135 according to the embodiment of the present specification may include a lower diffusion sheet, a lower prism sheet, and an upper prism sheet. For example, the optical sheet unit 135 may be configured as a single layer including the lower diffusion sheet, the lower prism sheet, and the upper prism sheet. However, the optical sheet unit 135 may be configured as a laminated combination of one or more of a diffusion sheet, a prism sheet, a dual brightness enhancement film, and a lenticular sheet, or as a single composite sheet having light diffusion and light collection functions.

[0058] The panel guide 200 can support the rear edge region (or edge region) of the display panel 110. The panel guide 200 can be supported or housed in the support member 300 so as to overlap the rear edge region of the display panel 110. The panel guide 200 can be disposed below the rear edge region (or edge region) of the display panel 110 so as not to protrude outside each side of the display panel 110.

[0059] The panel guide 200 according to the embodiment of the present specification may include a panel support portion 210 and a guide side portion 230. For example, the panel guide 200 may have a cross-sectional structure in the shape of a square or a square depending on the combined structure of the panel support portion 210 and the guide side portion 230, but is not limited to such a shape.

[0060] The panel supporter 210 may be coupled to an edge region (or marginal region) of the rear surface of the display panel 110 and supported by the support member 300. For example, the panel supporter 210 may have a rectangular band shape with an opening overlapping the remaining middle region of the display panel 110 excluding the edge region (or marginal region) of the rear surface, but is not limited to this shape. The panel supporter 210 may have a size equal to or smaller than the size of the display panel 110 so as not to protrude outside each side of the display panel 110. For example, the opening of the panel supporter 210 may have a size equal to or larger than the pixel array (or display unit) provided on the display panel 110.

[0061] The panel support part 210 may be in direct contact with the top surface of the backlight 130 , for example, the top surface of the optical sheet part 135 , or may be spaced a certain distance from the top surface of the optical sheet part 135 .

[0062] The guide side portion 230 can be connected to the panel support portion 210 and wrap around the side of the support member 300. For example, the guide side portion 230 can be bent from the panel support portion 210 toward the side of the support member 300 and surround the side of the support member 300 or be surrounded by the side of the support member 300.

[0063] The panel guide 200 according to the embodiments of the present specification may be made of, but is not limited to, a plastic material, a metal material, or a mixture of a plastic material and a metal material. For example, the panel guide 200 may function as a vibration transmission member that transmits the acoustic vibrations generated by the first and second vibration generating modules 400 and 500 to the edge regions (or marginal regions) of the display panel 110. Therefore, the panel guide 200 can transmit the acoustic vibrations generated by the first and second vibration generating modules 400 and 500 to the display panel 110 without loss while maintaining the rigidity of the display panel 110. For example, the panel guide 200 may include, but is not limited to, a metal material in order to transmit the acoustic vibrations generated by the first and second vibration generating modules 400 and 500 to the display panel 110 while maintaining the rigidity of the display panel 110.

[0064] The panel guide 200 according to the embodiment of the present specification can be coupled to the rear edge region (or border region) of the display panel 110 via the first connecting member 250 .

[0065] The first connecting member 250 may be interposed between the rear edge region (or border region) of the display panel 110 and the panel support portion 210 of the panel guide 200 to position or connect the display panel 110 to the panel guide 200. The first connecting member 250 according to the embodiment of the present specification may include, but is not limited to, an acrylic or urethane adhesive material. For example, the first connecting member 250 may include an acrylic adhesive material having relatively excellent adhesive strength and high hardness so that vibrations of the panel guide 200 can be efficiently transmitted to the display panel 110. The first connecting member 250 may include a double-sided foam adhesive pad having an acrylic adhesive layer or a hardened acrylic adhesive resin layer.

[0066] The front surface of the first connecting member 250 according to the embodiment of the present specification may be coupled to the lower substrate 113 or the lower polarizing member 115 of the display panel 110. The first connecting member 250 may be directly coupled to the edge region (or border region) of the rear surface of the lower substrate 113 to improve adhesion to the display panel 110. In this case, the first connecting member 250 is attached to the edge region (or border region) of the rear surface of the lower substrate 113 and surrounds the side of the lower polarizing member 115, thereby preventing light leakage from the side of the lower polarizing member 115.

[0067] The first connecting member 250 may have a uniform thickness (or height) to provide a sound transmission space (STS) between the display panel 110 and the panel guide 200. The first connecting member 250 according to the embodiments of the present specification may be formed in a four-sided sealed type or a closed loop shape on the panel support portion 210 of the panel guide 200, but is not limited thereto. In this case, the first connecting member 250 provides a sealed sound transmission space (STS) between the rearmost surface of the display panel 110 and the top surface of the backlight 130, which face each other across the opening of the panel guide 200, thereby preventing or minimizing leakage (or loss) of sound pressure transmitted to the sound transmission space (STS). The sound transmission space (STS) may serve as a sound pressure generation space where sound pressure is generated by vibration of the backlight 130 or a panel vibration space that smooths vibration of the display panel 110 due to sound pressure.

[0068] The rear surface (or back face) of the display module 100 may include a first region and a second region. For example, the first vibration generating module 400 may be disposed on the support member 300 corresponding to the first region on the rear surface of the display module 100. For example, the first vibration generating module 400 may include a first vibration generating device 410 and a second vibration generating device 420. For example, the second vibration generating module 500 may be disposed on the support member 300 corresponding to the second region on the rear surface of the display module 100. For example, the second vibration generating module 500 may include a third vibration generating device 510 and a fourth vibration generating device 520. The first and second vibration generating modules 400 and 500 may be disposed symmetrically or asymmetrically with respect to the first direction (X) (or horizontal direction) of the display module 100. For example, the first and second vibration generating modules 400 and 500 may be disposed symmetrically or asymmetrically with respect to the center of the display module 100 with respect to the first direction (X) (or horizontal direction) of the display module 100.

[0069] 1 to 4, the first and second vibration generating modules 400 and 500 can be disposed on the support member 300. The first and second vibration generating modules 400 and 500 are disposed on the support member 300 and can vibrate an area of ​​the display module 100.

[0070] The first vibration generating module 400 may be configured on a first forming portion 371 formed on the support member 300. The first forming portion 371 may support the first vibration generating module 400. The first vibration generating module 400 may further include a first plate 351. For example, the first plate 351 may be disposed on the first forming portion 371. The first plate 351 may be a diaphragm of the first vibration generating module 400. For example, the first plate 351 may be made of any one of iron (Fe), aluminum (Al), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, aluminum (Al) alloy, and stainless steel, but is not limited thereto. The first plate 351 may be a heat dissipation member capable of dissipating heat generated by vibration of the first vibration generating module 400. A first adhesive member 513 may be disposed between the support member 300 and the first plate 351. The support member 300 and the first vibration generating module 400 may be attached by an adhesive member 513. For example, the adhesive member 513 may include, but is not limited to, a single-sided tape, a single-sided adhesive pad, a single-sided adhesive gap pad, a single-sided adhesive foam pad, a double-sided tape, a double-sided adhesive pad, a double-sided adhesive gap pad, a double-sided adhesive foam pad, or a bond.

[0071] A first vibration generator 410 and a second vibration generator 420 can be disposed on the first plate 351. The first vibration generator 410 and the second vibration generator 420 can be formed of a piezoelectric composite including a piezoelectric composite layer, which will be described later with reference to FIGS.

[0072] The first vibration generating module 400 can vibrate a first region, for example, a left rear region, of the rear region (or back region) of the display module 100 to output sound to the front (FD) of the display panel 110. For example, when the first vibration generating module 400 is vibrated by a signal, the first vibration generating module 400 vibrates the left region of the support member 300, generating sound pressure in the gap space (GS) (or sound emission space) between the first vibration generating module 400 and the support member 300, thereby vibrating the first region of the display module 100 and generating a first sound (S1) and a second sound (S2). For example, when the first vibration generating module 400 is vibrated by a current or a voltage, sound pressure can be generated in the gap space (GS) due to the vibration of the first region caused by the vibration of the first vibration generating module 400. The backlight 130 vibrates due to this sound pressure, generating sound pressure in the sound transmission space (STS). The first sound (S1) and the second sound (S2) generated by the vibration of the display panel 110 due to the sound pressure generated in the sound transmission space (STS) can be output to the front (FD) of the display panel 110. Therefore, the sound waves generated by the vibration of the first vibration generating module 400 are directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the first sound (S1) and the second sound (S2). The first sound (S1) is output by the first vibration generating device 410 and may be a low-frequency sound. The second sound (S2) is output by the second vibration generating device 420 and may be a mid-frequency sound or a mid-high frequency sound. The low-frequency sound may be 200 Hz or less, the mid-frequency sound may be 200 Hz or more but not limited to 3 kHz, and the high-frequency sound may be 3 kHz or more. For example, the first vibration generating module 400 can output sound in a frequency range of 80 Hz to 40 kHz or 150 Hz to 40 kHz.

[0073] The second vibration generating module 500 may be configured on a second forming portion 372 formed on the support member 300. The second forming portion 372 may support the second vibration generating module 500. The second vibration generating module 500 may further include a second plate 352. For example, the second plate 352 may be disposed on the second forming portion 372. The second plate 352 may be a diaphragm of the second vibration generating module 500. For example, the second plate 352 may be made of any of iron (Fe), aluminum (Al), magnesium (Mg) alloy, magnesium-lithium (Mg-Li) alloy, aluminum (Al) alloy, and stainless steel, but is not limited thereto. The second plate 352 may be a heat dissipation member capable of dissipating heat generated by vibration of the second vibration generating module 500. An adhesive member 513 may be disposed between the support member 300 and the second plate 352. The support member 300 and the second vibration generating module 500 can be attached by an adhesive member 513. For example, the adhesive member 513 can include, but is not limited to, a single-sided tape, a single-sided adhesive pad, a single-sided adhesive gap pad, a single-sided adhesive foam pad, a double-sided tape, a double-sided adhesive pad, a double-sided adhesive gap pad, a double-sided adhesive foam pad, or a bond.

[0074] The first and second forming portions 371 and 372 may be formed concave or convex from the support member 300 to reduce or minimize an increase in the thickness (or height) of the display device due to the thickness (or height) of the vibration generating module 700 and slim down the display device. However, the shape is not limited to this. For example, the first and second forming portions 371 and 372 may be formed in a rectangular or circular shape, but the shape is not limited to this. The first and second forming portions 371 and 372 may be formed concavely from the front surface of the support member 300 facing the rear surface of the display module 100 to have a rectangular shape. The first and second forming portions 371 and 372 may be formed concavely from the first plate 351 by protruding from the support member 300 in a rear direction opposite to the front direction toward the rear surface of the display module 100. For example, the first forming portion 371 and the second forming portion 372 can be a groove portion, a recessed portion, a protruding portion, an indented portion, a receiving portion, a housing portion, or a rigidity reinforcing portion, and are not limited to the terms.

[0075] The first forming portion 371 and the second forming portion 372 may be formed by, but are not limited to, press forming or press molding. For example, the support member 300 may be formed by, but is not limited to, patterning or chemical etching, NC machining (e.g., machining using a numerically controlled machine tool), drilling, laser machining, or the like.

[0076] As another example, the first and second forming portions 371 and 372 may be arranged to surround the first and second vibration generating modules 400 and 500. For example, the first and second forming portions 371 and 372 may be partitions. The partitions may be air gaps or spaces that generate or transmit sound. The partitions may be air gaps or spaces that generate sound when the display panel 110 is vibrated by the first and second vibration generating modules 400 and 500. For example, the partitions may separate sounds or channels, and may prevent or reduce unclear sounds due to sound interference. The partitions may also be referred to as, but are not limited to, enclosures or baffles. When the first and second forming portions 371 and 372 are partitions, it is advantageous to realize a vibration generating module integrated with the partitions.

[0077] A second vibration generating module 500 may be disposed on the second plate 352. For example, a third vibration generating device 510 and a fourth vibration generating device 520 may be disposed on the second plate 352. The third vibration generating device 510 and the fourth vibration generating device 520 may be formed of a piezoelectric composite including a piezoelectric composite layer, as will be described later with reference to FIGS. 14 to 19. The first and second vibration generating modules 400 and 500 according to the embodiments of the present specification may be film-type transducers, and the sound generating modules may be sound generators, film actuators, film-type piezoelectric composite actuators, film speakers, film-type piezoelectric speakers, or film-type piezoelectric composite speakers, but are not limited to these terms.

[0078] The second vibration generating module 500 can vibrate a second region, for example, a right rear region, of the rear region of the display module 100 to output sound to the front (FD) of the display panel 110. The second vibration generating module 500 can include a third vibration generating device 510 and a fourth vibration generating device 520. For example, when the second vibration generating module 500 is vibrated by an acoustic signal, the second vibration generating module 500 vibrates the right region of the support member 300, generating sound pressure in the gap space (GS) (or sound emission space) between the second vibration generating module 500 and the support member 300, thereby vibrating the second region of the display module 100 and generating a first sound (S1) and a second sound (S2). For example, when the second vibration generating module 500 is vibrated by a current or a voltage, the second region can be vibrated by the second vibration generating module 500, generating sound pressure in the gap space (GS). This sound pressure generates sound pressure in the sound transmission space (STS) due to vibration of the backlight 130, and the sound pressure generated in the sound transmission space (STS) causes the display panel 110 to vibrate, generating a first sound (S1) and a second sound (S2), which can be output to the front (FD) of the display panel 110. Therefore, the sound waves generated by the vibration of the second vibration generating module 500 are directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the first sound (S1) and the second sound (S2). The first sound (S1) is output by the third vibration generating device 510 and may be a low-frequency sound. The second sound (S2) is output by the fourth vibration generating device 520 and may be a mid-frequency sound or a mid-high frequency sound. The low-frequency sound may be 200 Hz or less, the mid-frequency sound may be 200 Hz or more but not limited to, and the high-frequency sound may be 3 kHz or more. For example, the second vibration generating module 500 can output sound in a frequency range of 80 Hz to 40 kHz or 150 Hz to 40 kHz.

[0079] 2, the first vibration generating module 400 and the second vibration generating module 500 may be arranged on the support member 300. The first vibration generating module 400 and the second vibration generating module 500 may be arranged asymmetrically. For example, the first vibration generating module 400 and the second vibration generating module 500 may be arranged asymmetrically with respect to the first direction (X) (or horizontal direction) of the display module 100. For example, the first vibration generating module 400 and the second vibration generating module 500 may be arranged asymmetrically with respect to the center of the display module 100 with respect to the first direction (X) (or horizontal direction) of the display module 100. The first vibration generating device 410 and the second vibration generating device 420 may be arranged asymmetrically with respect to the third vibration generating device 510 and the fourth vibration generating device 520 with respect to the first direction (X) (or horizontal direction) of the display module 100. For example, the second vibration generator 420 and the fourth vibration generator 520 may be arranged closer to the end (or edge) of the support member 300 than the first vibration generator 410 and the third vibration generator 510. For example, the closer to the end (or edge) of the support member 300, the more the second vibration generator 420 and the fourth vibration generator 520 that output sounds in the mid-range or mid-to-high range may be arranged. For example, the first vibration generator 410 and the third vibration generator 510 may be arranged closer to the center of the support member 300 than the second vibration generator 420 and the fourth vibration generator 520. For example, the closer to the center of the support member 300, the more the first vibration generator 410 and the third vibration generator 510 that output sounds in the low range may be arranged.

[0080] 3, the first vibration generating module 400 and the second vibration generating module 500 may be disposed on the support member 300. The first vibration generating module 400 and the second vibration generating module 500 may be disposed symmetrically. For example, the first vibration generating module 400 and the second vibration generating module 500 may be disposed symmetrically about the center of the display module 100 based on the first direction (X) (or horizontal direction) of the display module 100. For example, the first vibration generating module 400 and the second vibration generating module 500 may be disposed symmetrically about the center of the display module 100 based on the first direction (X) (or horizontal direction) of the display module 100. The second vibration generating device 420 and the fourth vibration generating device 520 may be disposed symmetrically about the center of the display module 100 with the first vibration generating device 410 and the third vibration generating device 510. For example, the first vibration generator 410 and the third vibration generator 510 can output a first sound (S1), and the second vibration generator 420 and the fourth vibration generator 520 can output a second sound (S2). The first sound (S1) can be a low-frequency sound, and the second sound (S2) can be a mid-frequency sound or a mid-high frequency sound.

[0081] Therefore, the vibration generating module according to the embodiments of the present specification can provide a display device capable of outputting different sound ranges by structuring at least two vibration generating devices that output different sound ranges using the forming portions 371, 372 of the support member 300.

[0082] FIG. 5 is a diagram showing the back side of a support member according to an embodiment of the present specification.

[0083] 5, the rear surface of the support member 300 according to the embodiment of the present specification may include a first forming portion 371 and a second forming portion 372. The vibration generating modules described with reference to FIGS. 2 and 3 may be disposed in the first forming portion 371 and the second forming portion 372.

[0084] The fifth and sixth vibration generating devices 430, 530 may be arranged along the edges (or margins) of the support member 300. For example, the rear region of the support member 300 may correspond to or overlap with the edges (or margins) of the display module 100. For example, the fifth vibration generating device 430 may be arranged in the rear edge region (or margin region) of the support member 300 corresponding to the first rear region of the display module 100. For example, the sixth vibration generating device 530 may be arranged in the rear edge region (or margin region) of the support member 300 corresponding to the second rear region of the display module 100. The fifth and sixth vibration generating devices 430, 530 may also be configured on plates as described with reference to FIGS. 2 and 4.

[0085] The fifth vibration generator 430 may vibrate a first end region (or a left end region or a first edge region) of the end regions (or edge regions) of the display module 100 to output sound to a side of the display panel 110. The sixth vibration generator 530 may vibrate a second end region (or a right end region or a second edge region) of the end regions (or edge regions) of the display module 100 to output sound to a side of the display panel 110. For example, the sound generated by each of the fifth vibration generator 430 and the sixth vibration generator 530 may be in a high-frequency range. The high-frequency range may be 3 kHz or higher, but is not limited thereto. Therefore, sound waves generated by the vibrations of the fifth vibration generator 430 and the sixth vibration generator 530 may be directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the sound.

[0086] FIG. 6 is a diagram illustrating a display device according to an embodiment of the present specification.

[0087] 4 and 6, the first and second vibration generating modules 400 and 500 may be disposed in the rear and side regions of the display module 100. The first and second vibration generating modules 400 and 500 vibrate the rear region and output sound to the side (or sidewall) of the display panel 110. For example, when the first and second vibration generating modules 400 and 500 vibrate in response to a signal, a first acoustic path (SP1) is formed in the space between the system rear cover 600 and the support member 300, and the first acoustic path (SP1) may radiate (or output) toward the side of the system rear cover 600. The first acoustic path (SP1) generated between the system rear cover 600 and the support member 300 may radiate (or output) toward the side of the system rear cover 600 and output toward the front of the display panel 110 via a second acoustic path (SP2). For example, the sound generated by the vibration of the first and second vibration generating modules 400, 500 can output low, mid, and high frequency bands by a vibration generating device disposed in the rear region of the display module 100. For example, the sound generated by the vibration of the first and second vibration generating modules 400, 500 can output high frequency bands by a vibration generating device disposed in the side region of the display module 100. Therefore, the sound or sound waves generated by the vibration of the first and second vibration generating modules 400, 500 can be output in the front direction or radiated (or output) in the side direction of the display panel 110 and transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the sound.

[0088] Therefore, the display device according to the embodiments of the present specification can provide a vibration generating device that can be internalized within the display device and can output sounds in the low-frequency, mid-frequency, and high-frequency ranges.

[0089] Fig. 7 is a diagram showing a vibration generating module according to another embodiment of the present specification. Fig. 8 is a diagram showing a vibration generating module according to another embodiment of the present specification. Fig. 9 is another cross-sectional view taken along line II' shown in Fig. 1.

[0090] 7 and 8, the first and second vibration generating modules 400 and 500 according to other embodiments of the present specification may be disposed on the reflective sheet 133. For example, the first vibration generating module 400 may be disposed on the rear surface of the reflective sheet 133, which corresponds to the rear surface of the display module. For example, the second vibration generating module 500 may be disposed on the rear surface of the reflective sheet 133, which corresponds to the rear surface of the display module. The details of the first and second vibration generating modules 400 and 500 are the same as those described with reference to FIGS. 2 to 4, and therefore will not be described again.

[0091] 7, the first vibration generating module 400 and the second vibration generating module 500 may be disposed on the reflective sheet 133. The first vibration generating module 400 and the second vibration generating module 500 may be disposed symmetrically.

[0092] 8, the first vibration generating module 400 and the second vibration generating module 500 may be disposed on the reflective sheet 133. The first vibration generating module 400 and the second vibration generating module 500 may be disposed asymmetrically.

[0093] 9, the first vibration generating module 400 and the second vibration generating module 500 can be disposed between the reflecting sheet 133 and the support member 300. In the first vibration generating module 400 and the second vibration generating module 500, the reflecting sheet 133, the light guide plate 131, and the optical sheet unit 135 can be realized as vibration plates.

[0094] The first vibration generating module 400 may be disposed on the rear surface of the reflective sheet 133 corresponding to a first rear region of the rear region of the display module 100. The first vibration generating module 400 may vibrate a first region, for example, a left rear region, of the rear region of the display module 100 to output sound to the front (FD) of the display panel 110. For example, when the first vibration generating module 400 is vibrated by a signal, the first vibration generating module 400 may vibrate the left region of the display module 100 to generate sound pressure in a gap space (GS) (or sound emission space) between the first vibration generating module 400 and the support member 300, thereby vibrating the first region of the display module 100 and generating a first sound (S1) and a second sound (S2). For example, when the first vibration generating module 400 is vibrated by a signal, the first vibration generating module 400 may vibrate the first region to generate sound pressure in the gap space (GS). This sound pressure generates sound pressure in the sound transmission space (STS) by vibrating the backlight 130 including the reflective sheet 133, and the sound pressure generated in the sound transmission space (STS) causes the display panel 110 to vibrate, generating a first sound (S1) and a second sound (S2) that can be output to the front (FD) of the display panel 110. Therefore, the sound waves generated by the vibration of the first vibration generating module 400 are directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the first sound (S1) and the second sound (S2). The first sound (S1) is output by the first vibration generating device 410 and may be a low-frequency sound. The second sound (S2) is output by the second vibration generating device 420 and may be a mid-frequency sound or a mid-high frequency sound. The low-frequency sound may be 200 Hz or less, the mid-frequency sound may be 200 Hz or more but not limited to 3 kHz, and the high-frequency sound may be 3 kHz or more. The same explanation applies to the second vibration generating module 500, so the explanation will be omitted. For example, the second vibration generating module 500 may be disposed on the rear surface of the reflective sheet 133 corresponding to a second rear surface area of ​​the rear surface area of ​​the display module 100.

[0095] An adhesive member 513 may be disposed between the reflective sheet 133 and the first plate 351. The reflective sheet 133 and the first vibration generating module 400 may be attached by the adhesive member 513. For example, the adhesive member 513 may include, but is not limited to, a single-sided tape, a single-sided adhesive pad, a single-sided adhesive gap pad, a single-sided adhesive foam pad, a double-sided tape, a double-sided adhesive pad, a double-sided adhesive gap pad, a double-sided adhesive foam pad, or a bond.

[0096] As another example, the first vibration generating module 400 may omit the first plate 351. In this case, the first vibration generating module 400 may be attached to the rear surface of the reflective sheet 133 using an adhesive member, and the adhesive member may be disposed in the same size as the first vibration generating module 400. The adhesive member may be made of the same material as the adhesive member 513, but is not limited to this.

[0097] FIG. 10 is a view showing the rear surface of a support member according to another embodiment of the present specification.

[0098] 10, the rear surface of the support member 300 according to the embodiment of the present specification may include a first forming portion 371 and a second forming portion 372. The vibration generating modules described in FIGS. 2, 3, 7, and 8 may be disposed in the first forming portion and the second forming portion.

[0099] The fifth and sixth vibration generating devices 430, 530 may be arranged along the edges (or margins) of the support member 300. For example, the rear region of the support member 300 may correspond to or overlap with the edges (or margins) of the display module 100. For example, the fifth vibration generating device 430 may be arranged in the rear edge region (or margin region) of the support member 300 corresponding to the first rear region of the display module. For example, the sixth vibration generating device 530 may be arranged in the rear edge region (or margin region) of the support member 300 corresponding to the second rear region of the display module.

[0100] The fifth vibration generator 430 can be arranged on the third plate 353, and the sixth vibration generator 530 can be arranged on the fourth plate 354. The third plate 353 and the fourth plate 354 can be omitted. For example, the fifth vibration generator 430 and the sixth vibration generator 530 can be arranged along the ends (or edges) of one side (or one side wall) and the other side (the other side wall) of the support member 300.

[0101] The fifth vibration generator 430 may vibrate a first end region (or a left end region or a first edge region) of the end regions of the display module 100 to output sound to a side of the display panel 110. The sixth vibration generator 530 may vibrate a second end region (or a right end region or a second edge region) of the end regions (or edge regions) of the display module 100 to output sound to a side of the display panel 110. For example, the sound of the fifth vibration generator 430 and the sixth vibration generator 530 may be in a high-frequency range. The high-frequency range may be 3 kHz or higher, but is not limited thereto. Therefore, sound waves generated by the vibrations of the fifth vibration generator 430 and the sixth vibration generator 530 are directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the sound.

[0102] A first hole 371s may be disposed on one side of the first forming portion 371. A second hole 372s may be disposed on one side of the second forming portion 372. For example, the first hole 371s and the second hole 372s may be a plurality of holes communicating with the space between the end (or edge) of the support member 300 and the first and second vibration generating modules 400, 500. The first hole 371s and the second hole 372s may be formed by, but are not limited to, a patterning process or a drilling process on the support member 300. For example, the first hole 371s and the second hole 372s may improve the acoustic reflection characteristics between the support member 300 and the first and second vibration generating modules 400, 500, thereby improving high-frequency sound.

[0103] FIG. 11 is a diagram illustrating a display device according to another embodiment of the present specification.

[0104] 9 and 11, the first and second vibration generating modules 400, 500 may be disposed in the rear and side regions of the display module 100. The first and second vibration generating modules 400, 500 may vibrate the rear region of the display module 100 and output sound in the side direction of the display panel 110. For example, when the first and second vibration generating modules 400, 500 vibrate in response to a signal, a third acoustic path (SP3) may be generated in the rear direction of the support member 300 due to the vibration of the first and second vibration generating modules 400, 500. For example, the third acoustic path (SP3) of the display module 100 may be generated on the rear side of the support member 300 by generating sound pressure in the gap space (GS) (or sound emission space) between the first and second vibration generating modules 400, 500 and the support member 300.

[0105] For example, the panel guide 200 may further include a groove 200s. The groove 200s may be a slit or a hole, but the terms are not limited thereto. The groove 200s of the panel guide 200 may allow sound to be output in a lateral or front direction due to vibration of the first and second vibration generating modules 400 and 500 disposed on the side of the display module 100. A fourth acoustic path (SP4) is generated on the side of the display module 100 through the groove 200s of the panel guide 200. The fourth acoustic path (SP4) radiates from the side of the panel guide 200 to become a fifth acoustic path (SP5), and sound may be output in the front direction of the display panel 110 through the fifth acoustic path (SP5). For example, the fourth acoustic path (SP4) may radiate from the guide side 230 of the panel guide 200. The sound generated by the vibration of the first and second vibration generating modules 400 and 500 may output low, mid, and high frequency ranges through a vibration generating device disposed in the rear region of the display module 100. For example, the sound generated by the vibration of the first and second vibration generating modules 400 and 500 can output a high frequency band by a vibration generating device disposed in the side region of the display module 100. Therefore, the sound or sound waves generated by the vibration of the first and second vibration generating modules 400 and 500 can be output toward the front or side of the display panel 110 and transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the sound.

[0106] Therefore, the display device according to the embodiments of the present specification can provide a vibration generating device that can be internalized within the display device and can output sounds in the low-frequency, mid-frequency, and high-frequency ranges.

[0107] FIG. 12 is an exploded view of a display device according to an embodiment of the present disclosure.

[0108] Referring to FIG. 12 , a first forming portion 371 and a second forming portion 372 may be formed on the rear surface of the support member 300. A first plate 351 may be disposed on the first forming portion 371. For example, the first forming portion 371 may house the first plate 351. A first adhesive member 513 may be disposed between the first forming portion 371 and the first plate 351. A first vibration generator 410 and a second vibration generator 420 may be disposed on the first plate 351. For example, the first vibration generator 410 and the second vibration generator 420 may be housed in the first forming portion 371. A first hole 371s may be further included on one side of the first forming portion 371. A first groove 301s may be further disposed at an end (or edge) of one side of the support member 300. The first groove 301s may be a slit, but is not limited to the term. For example, an edge of one side of the support member 300 may correspond to or overlap with an edge (or edge) of the first rear region of the display module 100. The fifth vibration generating device 430 may be disposed in the first groove portion 301s. For example, the fifth vibration generating device 430 may be disposed at an edge (or edge) of the support member 300 that corresponds to the edge (or edge) of the first rear region of the display module 100.

[0109] The second plate 352 may be disposed on the second forming portion 372. For example, the second forming portion 372 may accommodate the second plate 352. The third vibration generator 510 and the fourth vibration generator 520 may be disposed on the second plate 352. For example, the third vibration generator 510 and the fourth vibration generator 520 may be accommodated in the second forming portion 372. A second adhesive member 514 may be disposed between the second forming portion 372 and the second plate 352. A second hole 372s may be further included on one side of the second forming portion 372. A second groove 302s may be disposed on the end (or edge) of the other side of the support member 300. The second groove 302s may be a slit, but is not limited to the term. For example, the end (or edge) of one side of the support member 300 may correspond to or overlap the end (or edge) of the second rear region of the display module 100. The second groove 302s may be provided with a sixth vibration generator 530. For example, the sixth vibration generator 530 may be provided at an end (or edge) of the support member 300 corresponding to an end (or edge) of the second rear region of the display module 100.

[0110] Therefore, the vibration generating module according to the embodiments of the present specification can provide a display device that can output low, mid, and high frequency ranges by configuring two vibration generating devices that output different frequency ranges on the rear surface of the support member.By configuring an additional vibration generating device that outputs a high frequency range on the end (or edge) of the rear surface of the support member, it can provide a display device with stronger sound pressure in the high frequency range.

[0111] 13A to 13F are diagrams showing the rear surface of a support member according to an embodiment of the present specification.

[0112] 13A to 13F are views showing the rear surface of the support member, and will be used to explain a vibration generator that can be disposed in the forming section.

[0113] Referring to FIG. 13A , a first forming portion 371 and a second forming portion 372 may be formed on the rear surface of the support member 300. The first forming portion 371 and the second forming portion 372 may correspond to the rear region of the display module 100. The first forming portion 371 may correspond to the left rear region of the rear region of the display module 100. For example, the first forming portion 371 may correspond to the first rear region of the rear region of the display module 100. The second forming portion 372 may correspond to the right rear region of the rear region of the display module 100. For example, the second forming portion 372 may correspond to the second rear region of the rear region of the display module 100. A first vibration generating module including two or more vibration generating devices that output different sound ranges may be disposed in the first forming portion 371. For example, the first vibration generating module may include a first vibration generating device and a second vibration generating device. The first vibration generating module may output sound in the low-mid frequency range. The first vibration generating module may be configured such that the frequency range increases from the center to the end (or edge) of the display module 100. For example, the first vibration generating module may be configured to have different frequency ranges from the center of the display module 100 to the end (or edge) of the display module 100 in the horizontal direction of the display module 100. The first vibration generating module may be configured such that the frequency range increases from the center to the end (or edge) of the support member 300. For example, the first vibration generating module may include a first vibration generating device for a low frequency range disposed on the rear surface of the display module 100 and a second vibration generating device for a mid frequency range disposed on the rear surface of the display module 100. For example, the first vibration generating module may include a first vibration generating device for a low frequency range disposed in the center of the support member 300 and a second vibration generating device for a mid frequency range disposed on the end (or edge) of the support member 300. For example, the first vibration generating module may be configured such that the frequency range increases from the right side to the left side in the horizontal direction of the first forming portion 371.As another example, the first vibration generating module may output sound in the low, mid, and high frequency ranges. The first vibration generating module may be configured such that the frequency range increases from the center to the end (or edge) of the support member 300. For example, the first vibration generating module may include a first vibration generating device for the low frequency range disposed on the rear surface of the display module 100 and a second vibration generating device for the mid frequency range disposed on the rear surface of the display module 100. For example, the first vibration generating module may include a first vibration generating device for the low frequency range disposed in the center of the support member 300 and a second vibration generating device for the mid and high frequency range disposed on the end (or edge) of the support member 300. For example, the first vibration generating module may be configured such that the frequency range increases from the right side to the left side in the lateral direction of the first forming portion 371.

[0114] The second forming unit 372 may be provided with a second vibration generating module including two or more vibration generating devices that output different sound ranges. The second vibration generating module may include a third vibration generating device and a fourth vibration generating device. For example, the second vibration generating module may output sound in the low-mid range. The second vibration generating module may be configured such that the sound range increases from the center to the end (or edge) of the support member 300. For example, the second vibration generating module may be configured to have different sound ranges from the center of the display module 100 to the end (or edge) of the display module 100 in the horizontal direction of the display module 100. For example, the second vibration generating module may include a third vibration generating device for a low range disposed on the rear surface of the display module 100 and a fourth vibration generating device for a mid-range disposed on the rear surface of the display module 100. For example, the second vibration generating module may include a third vibration generating device for a low frequency range disposed at the center of the support member 300 and a fourth vibration generating device for a mid frequency range disposed at an end (or edge) of the support member 300. For example, the second vibration generating module may be configured such that the frequency range increases from left to right in the lateral direction of the second forming portion 372. As another example, the second vibration generating module may output sounds in a low, mid, and high frequency range. The second vibration generating module may be configured such that the frequency range increases from the center to the end (or edge) of the support member 300. For example, the second vibration generating module may include a third vibration generating device for a low frequency range disposed at the rear surface of the display module 100 and a fourth vibration generating device for a mid frequency range disposed at the rear surface of the display module 100. For example, the second vibration generating module may include a third vibration generating device for a low frequency range disposed at the center of the support member 300 and a fourth vibration generating device for a mid to high frequency range disposed at an end (or edge) of the support member 300. For example, the second vibration generating module may be configured such that the sound range increases from the left to the right in the lateral direction of the second forming portion 372.

[0115] The first vibration generating module disposed in the first forming portion 371 may be configured asymmetrically with the second vibration generating module disposed in the second forming portion 372. For example, the first vibration generating module disposed in the first forming portion 371 may include a first vibration generating device for a low frequency band disposed in the center of the support member 300 and a second vibration generating device for a mid frequency band or a mid-high frequency band disposed at an end (or edge) of the support member 300. The second vibration generating module disposed in the second forming portion 372 may include a third vibration generating device for a low frequency band disposed in the center of the support member 300 and a fourth vibration generating device for a mid frequency band or a mid-high frequency band disposed at an end (or edge) of the support member 300. Not limited thereto, the first vibration generating module disposed in the first forming portion 371 may be configured symmetrically with the second vibration generating module disposed in the second forming portion 372. For example, the first vibration generating module arranged in the first forming portion 371 may include a first vibration generating device for the bass band arranged in the center of the support member 300 and a second vibration generating device for the mid-range band or mid-high range band arranged at the end (or edge) of the support member 300. The second vibration generating module arranged in the second forming portion 372 may include a fourth vibration generating device for the mid-range band or mid-high range band arranged in the center of the support member 300 and a third vibration generating device for the bass band arranged at the end (or edge) of the support member 300.

[0116] Therefore, a vibration generating module including two or more vibration generating devices that output different sound ranges to the forming section can be modularized, thereby improving the freedom of placement of the vibration generating module placed on the back of the display module.

[0117] The first forming portion 371 and the second forming portion 372 each constitute a vibration generating module including two or more vibration generators that output different sound ranges, and the first forming portion 371 and the second forming portion 372 can be partitions of the respective vibration generating modules. The partitions can separate the sounds and channels to provide clearer sounds. Furthermore, the first forming portion 371 and the second forming portion 372 can each be modularized with the vibration generating module and the partition, improving the flexibility of the vibration generating module arrangement.

[0118] The display device according to the embodiments of the present specification may further include a protrusion disposed on one side of the first forming portion 371 and a first hole 371s disposed on one side of the protrusion. The display device according to the embodiments of the present specification may further include a protrusion disposed on one side of the second forming portion 372 and a second hole 372s disposed on one side of the protrusion. The first hole 371s and the second hole 372s can improve the reflection characteristics of sound between the support member 300 and the vibration generating module, thereby further improving sound in the high-frequency range. However, the protrusion and hole of the forming portion may be omitted.

[0119] Referring to FIG. 13A, the support member 300 may include a first groove 301s disposed at an end (or edge) of one side of the support member 300 and a second groove 302s disposed at an end (or edge) of the other side of the support member 300. For example, the first groove 301s and the second groove 302s may be disposed at the center of the first forming portion 371 and the second forming portion 372. For example, the first groove 301s and the second groove 302s may be disposed at the center of the support member 300. For example, the first groove 301s and the second groove 302s may be disposed at the center of the rear surface of the support member 300. A fifth vibration generator and a sixth vibration generator may be disposed in the first groove 301s and the second groove 302s. This can further improve the high-frequency sound. The first to sixth vibration generators may be the vibration generators described with reference to FIGS. 1 to 12.

[0120] Referring to FIG. 13B, a first forming portion 471 and a second forming portion 472 may be configured on the rear surface of the support member 300. A first vibration generating module including two or more vibration generators that output different frequency ranges may be disposed in the first forming portion 471. A second vibration generating module including two or more vibration generators that output different frequency ranges may be disposed in the second forming portion 472. The first forming portion 471 and the second forming portion 472 may omit the first holes 371s and the second holes 372s. As shown in FIG. 13A, the first forming portion 471 and the second forming portion 472 may omit the protrusions where the first holes 371s and the second holes 372s are disposed. The volume of the first forming portion 471 without the protrusions may be larger than the volume of the first forming portion 371 with the protrusions. For example, the frequency corresponding to the volume of the first forming portion 471 or the second forming portion 472 may be 702 Hz. For example, the frequency corresponding to the volume of the first forming portion 371 or the second forming portion 372 in Fig. 13A may be 590 Hz. Therefore, the frequency when configured as in Fig. 13B, which does not have protrusions, may be higher than the frequency of Fig. 13A, which has protrusions. Therefore, the frequency may vary depending on the size of the first forming portion or the second forming portion. The remaining configuration is the same as Fig. 13A, so a description thereof will be omitted here.

[0121] 13C , a first forming portion 571, a second forming portion 572, a third forming portion 581, and a fourth forming portion 582 may be configured on the rear surface of the support member 300. The first forming portion 571 and the third forming portion 581 may correspond to a left rear region of the rear region of the display module 100. For example, the first forming portion 571 and the third forming portion 581 may correspond to a first rear region of the rear region of the display module 100. The second forming portion 572 and the fourth forming portion 582 may correspond to a right rear region of the rear region of the display module 100. For example, the second forming portion 572 and the fourth forming portion 582 may correspond to a second rear region of the rear region of the display module 100. Each of the first to fourth forming portions 571, 572, 581, and 582 may be configured as a vibration generator having a different sound range. For example, the vibration generators arranged in the first to fourth forming parts may be configured to have different frequency ranges from the center of the display module 100 to the end (or edge) of the display module 100 based on the horizontal direction of the display module 100. For example, vibration generators for a mid-range or mid-high range may be arranged in the first forming part 571 and the second forming part 572. For example, vibration generators for a low-range may be arranged in the third forming part 581 and the fourth forming part 582. As another example, vibration generators for a mid-range or mid-high range may be arranged in the first forming part 571 and the fourth forming part 582. For example, vibration generators for a low-range may be arranged in the second forming part 572 and the third forming part 581. The first to fourth forming parts 571, 572, 581, and 582 may be configured to have the same size, but are not limited to this.

[0122] According to an embodiment of the present specification, a vibration generator is configured in each of the first to fourth forming sections 571, 572, 581, and 582, and each of the first to fourth forming sections 571, 572, 581, and 582 can be a partition of the vibration generator. The partitions can separate the sound and the channel, thereby providing clear sound. Furthermore, since the vibration generator and the partition can be configured as a module in each of the first to fourth forming sections 571, 572, 581, and 582, the degree of freedom in arranging the vibration generator can be improved.

[0123] A display device according to an embodiment of the present specification may include a first groove 301s disposed at an end (or edge) of one side of the support member 300 and a second groove 302s disposed at an end (or edge) of the other side of the support member 300. For example, the first groove 301s and the second groove 302s may be disposed at the center of the first to fourth forming portions 571, 572, 581, and 582. For example, the first groove 301s and the second groove 302s may be disposed at the center of the support member 300. For example, the first groove 301s and the second groove 302s may be disposed at the center of the rear surface of the support member 300. A fifth vibration generator and a sixth vibration generator may be disposed in the first groove 301s and the second groove 302s. This can further improve the sound in the high-frequency range.

[0124] 13A, holes can be further formed in the first to fourth forming portions 571, 572, 581, and 582. This can further improve the sound in the high frequency range.

[0125] 13D , a first forming portion 671, a second forming portion 672, a third forming portion 681, and a fourth forming portion 682 may be formed on the rear surface of the support member 300. The first forming portion 671, the second forming portion 672, the third forming portion 681, and the fourth forming portion 682 may correspond to the rear region of the display module 100. For example, the first forming portion 671 and the third forming portion 681 may correspond to the left rear region of the rear region of the display module 100. For example, the first forming portion 671 and the third forming portion 681 may correspond to the first rear region of the rear region of the display module 100. The second forming portion 672 and the fourth forming portion 682 may correspond to the right rear region of the rear region of the display module 100. For example, the second forming portion 672 and the fourth forming portion 682 may correspond to the second rear region of the rear region of the display module 100. The first to fourth forming parts 671, 672, 681, and 682 may each be configured with a vibration generator having a different frequency range. For example, the vibration generators arranged in the first to fourth forming parts may be configured to have different frequency ranges from the center of the display module 100 to the end (or rim) of the display module 100 based on the lateral direction of the display module 100. For example, the first forming part 671 and the second forming part 672 may be provided with a vibration generator for a mid-range frequency band or a mid-high frequency band. For example, the third forming part 681 and the fourth forming part 682 may be provided with a vibration generator for a low frequency band. As another example, the first forming part 671 and the fourth forming part 682 may be provided with a vibration generator for a mid-range frequency band or a mid-high frequency band. For example, the second forming part 672 and the third forming part 681 may be provided with a vibration generator for a low frequency band.

[0126] According to an embodiment of the present specification, a vibration generator is configured in each of the first to fourth forming sections 671, 672, 681, and 682, and the first to fourth forming sections 671, 672, 681, and 682 can be partitions for each vibration generator. The partitions separate the sounds and channels, allowing for clear sound. Furthermore, by disposing a vibration generator in each of the first to fourth forming sections 671, 672, 681, and 682 and configuring the first to fourth forming sections 671, 672, 681, and 682 as partitions, the vibration generators and partitions can be modularized, thereby improving the flexibility in arranging the vibration generators.

[0127] The first to fourth forming portions 671, 672, 681, and 682 may be configured to have the same or different sizes. For example, the third forming portion 681 and the fourth forming portion 682, which accommodate vibration generators for the bass band, may be larger than the first forming portion 671 and the second forming portion 672, which accommodate vibration generators for the midrange or mid-high range. This is not a limitation, and the first to fourth forming portions 671, 672, 681, and 682 may have the same size. For example, if the third forming portion 681 and the fourth forming portion 682, which accommodate vibration generators for the bass band, are larger than the first forming portion 671 and the second forming portion 672, which accommodate vibration generators for the midrange or mid-high range, the vibration area and air volume increase, thereby further improving the sound pressure in the bass range.

[0128] A display device according to an embodiment of the present specification may include a first groove 301s disposed at an end (or edge) of one side of the support member 300 and a second groove 302s disposed at an end (or edge) of the other side of the support member 300. For example, the first groove 301s and the second groove 302s may be disposed at the center of the first to fourth forming portions 671, 672, 681, and 682. For example, the first groove 301s and the second groove 302s may be disposed at the center of the support member 300. A fifth vibration generator and a sixth vibration generator may be disposed in the first groove 301s and the second groove 302s. This may further improve the sound in the high-frequency range.

[0129] 13E, a first forming portion 771, a second forming portion 772, and a third forming portion 780 may be formed on the rear surface of the support member 300. The first forming portion 771, the second forming portion 772, and the third forming portion 780 may correspond to the rear region of the display module 100. For example, the first forming portion 771 may correspond to the left rear region of the rear region of the display module 100. For example, the first forming portion 771 may correspond to the first rear region of the rear region of the display module 100. The second forming portion 772 may correspond to the right rear region of the rear region of the display module 100. For example, the second forming portion 772 may correspond to the second rear region of the rear region of the display module 100. The third forming portion 780 may correspond to the center region of the rear region of the display module 100. The first to third forming parts 771, 772, and 780 may each be configured with a vibration generator having a different frequency range. For example, the vibration generators arranged in the first to third forming parts may be configured to have different frequency ranges from the center of the display module 100 to the end (or rim) of the display module 100 based on the lateral direction of the display module 100. For example, the first forming part 771 and the second forming part 772 may be provided with a vibration generator for a mid-range frequency band or a mid-to-high frequency band. For example, the third forming part 780 may be provided with a vibration generator for a low-range frequency band.

[0130] According to an embodiment of the present specification, a vibration generator is configured in each of the first to third forming sections 771, 772, and 780, and the first to third forming sections 771, 772, and 780 can serve as partitions for the respective vibration generators. The partitions separate the sounds and channels, thereby providing clearer sounds. Furthermore, the vibration generators and partitions can be modularized in each of the first to third forming sections 771, 772, and 780, thereby improving the flexibility of the vibration generator arrangement. For example, a vibration generator can be configured in each of the first to third forming sections 771, 772, and 780, and the first to third forming sections 771, 772, and 780 can be modularized in each of the first to third forming sections 771, 772, and 780, thereby improving the flexibility of the vibration generator arrangement.

[0131] The first to third forming sections 771, 772, 780 may be configured to have the same or different sizes. For example, the size of the third forming section 780, on which a vibration generator for a bass range is arranged, may be set larger than the size of the first forming section 771 and the second forming section 772, on which vibration generators for a mid-range range or a mid-high range range are arranged. This is not limitative, and the sizes of the first to third forming sections 771, 772, 780 may be the same. For example, if the size of the third forming section 780, on which a vibration generator for a bass range is arranged, is larger than the size of the first forming section 771 and the second forming section 772, on which vibration generators for a mid-range range or a mid-high range range are arranged, the sound pressure in the bass range can be further improved.

[0132] A display device according to an embodiment of the present specification may include a first groove 301s disposed at an end (or edge) of one side of the support member 300 and a second groove 302s disposed at an end (or edge) of the other side of the support member 300. For example, the first groove 301s and the second groove 302s may be disposed at the center of the first to third forming portions 771, 772, and 780. For example, the first groove 301s and the second groove 302s may be disposed at the center of the support member 300. A fifth vibration generator and a sixth vibration generator may be disposed in the first groove 301s and the second groove 302s. This may further improve the sound in the high-frequency range.

[0133] 13F, a first forming portion 890 may be configured on the rear surface of the support member 300. The first forming portion 890 may correspond to the rear surface region of the display module 100. Vibration generating modules with different frequency bands may be configured in the first forming portion 890. For example, the first forming portion 890 may be provided with a vibration generating module including a vibration generator for a mid-range or mid-high range and a vibration generator for a low range. As another example, the first forming portion 890 may be provided with a vibration generating module including a vibration generator for a mid-range, a vibration generator for a high range, and a vibration generator for a low range.

[0134] For example, the vibration generating module may be configured so that the frequency range increases from the right side to the left side of the support member 300. The vibration generating module may include a low-frequency vibration generator disposed on the right side of the support member 300 and a mid-frequency or mid-high frequency vibration generator disposed on the left side. As another example, the vibration generating module may include a low-frequency vibration generator disposed on the right side of the support member 300, a treble vibration generator disposed on the left side, and a mid-frequency vibration generator disposed between the low-frequency vibration generator and the treble vibration generator.

[0135] As another example, the vibration generating module may be configured such that the frequency range increases from the left to the right side of the support member 300. The vibration generating module may include a low-frequency vibration generator disposed on the left side of the support member 300 and a mid-frequency or mid-high frequency vibration generator disposed on the right side. As another example, the vibration generating module may include a low-frequency vibration generator disposed on the left side of the support member 300, a treble vibration generator disposed on the right side, and a mid-frequency vibration generator disposed between the low-frequency vibration generator and the treble vibration generator.

[0136] According to an embodiment of the present specification, a vibration generating module including two or more vibration generators with different sound ranges is configured in the first forming part 890, and the first forming part 890 can be a partition of the vibration generating module. The partition can separate the sound and the channel, providing clear sound. In addition, the vibration generating module and the partition can be modularized in the first forming part 890, improving the flexibility of the vibration generating module arrangement.

[0137] 13A to 13E, the display device according to the embodiment of the present specification may further include a first groove disposed at an end (or edge) of one side of the support member 300 and a second groove disposed at an end (or edge) of the other side of the support member 300. For example, the first groove and the second groove may be disposed at the center of the first forming portion 890. For example, the first groove and the second groove may be disposed at the center of the support member 300. For example, the first groove and the second groove may be disposed at the center of the rear surface of the support member 300. A fifth vibration generator and a sixth vibration generator may be disposed in the first groove and the second groove. This can further improve the sound in the high-frequency range.

[0138] 13C to 13F, the display device according to the embodiment of the present specification may further include a protrusion disposed on one side of the forming portion and a hole disposed on one side of the protrusion.

[0139] Therefore, a vibration generating module including two or more vibration generating devices that output different sound ranges to the first forming section can be modularized, thereby improving the freedom of placement of the vibration generating module placed on the back of the display module.

[0140] Fig. 14 is a diagram showing an electromagnetic exciter according to an embodiment of the present specification, and Fig. 15 is a cross-sectional view taken along line II-II' shown in Fig. 14.

[0141] 14 and 15, the first and second vibration generating modules 400 and 500 according to the embodiments of the present specification may include a piezoelectric composite layer (PCL), a first electrode 23, and a second electrode 24.

[0142] The piezoelectric composite layer (PCL) may include a plurality of first portions 21 and a plurality of second portions 22 disposed between the plurality of first portions 21, respectively.

[0143] The first and second vibration generating modules 400, 500 according to the embodiments of the present specification may include a plurality of first portions 21 and a plurality of second portions 22. For example, the plurality of first portions 21 may have piezoelectric properties, and the plurality of second portions 22 may complement the impact resistance of the first portions 21 and have flexibility.

[0144] Each of the first portions 21 according to the embodiment of the present specification may be made of an inorganic material. The inorganic material may include an electroactive material. The electroactive material has a characteristic that, when pressure or distortion is applied to the crystalline structure by an external force, a potential difference is generated due to dielectric polarization caused by a change in the relative positions of positive (+) ions and negative (-) ions, and vibration is generated due to an electric field caused by an applied voltage.

[0145] Each of the plurality of first portions 21 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 characteristics) caused by an electric field. For example, each of the plurality of first portions 21 may be expressed as an electroactive portion, an inorganic material portion, a piezoelectric material portion, or a vibrating portion, but is not limited thereto.

[0146] Each of the first portions 21 according to the embodiments of the present specification may be made of a ceramic-based material capable of achieving 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 represented by the chemical formula ABO3, where A is a divalent metal element and B is a tetravalent metal element. As an example, in the chemical formula ABO3, A and B may be cations, and O may be an anion. For example, the perovskite crystal structure may include at least one of PbTiO3, PbZrO3, BaTiO3, and SrTiO3, but is not limited thereto.

[0147] The perovskite crystal structure can generate a piezoelectric effect by changing the polarization due to the displacement of the central ion, e.g., Ti ion in the case of PbTiO3, caused by external stress or a magnetic field. For example, the perovskite crystal structure can generate a piezoelectric effect by changing from a symmetric cubic structure to an asymmetric structure such as a tetragonal, orthorhombic, or rhombohedral structure due to external stress or a magnetic field. The morphotropic phase boundary of the asymmetric tetragonal and rhombohedral structures has high polarization and facilitates polarization rearrangement, resulting in excellent piezoelectric properties.

[0148] As an example, the inorganic material portion configured in each of the plurality of first portions 21 may include one or more of lead (Pb), zirconium (Zr), titanium (Ti), zinc (Zn), nickel (Ni), and niobium (Nb), but is not limited thereto.

[0149] As another example, the inorganic material portion configured in each of the plurality of first portions 21 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 nickel niobate)-based material including lead (Pb), zinc (Zn), nickel (Ni), and niobium (Nb). In addition, the inorganic material portion may include, but is not limited to, at least one of CaTiO3, BaTiO3, and SrTiO3, which do not include lead (Pb).

[0150] Each of the plurality of second portions 22 according to the embodiments of the present specification may be made of an organic material portion and may be arranged to fill the gaps between the inorganic material portions of the first portion 21. By being arranged between the inorganic material portions, the organic material portion can absorb impacts applied to the inorganic material portion (or the first portion) and release stress concentrated on the inorganic material portion, thereby improving the overall durability of the first and second vibration generating modules 400, 500 and providing flexibility to the vibration generating module 500. The flexibility of the first and second vibration generating modules 400, 500 allows them to bend in a shape that matches the shape of the display panel 110.

[0151] Each of the plurality of second portions 22 may be disposed between the plurality of first portions 21. The plurality of first portions 21 and the plurality of second portions 22 may be disposed (or arranged) side by side on the same plane (or the same layer). Each of the plurality of second portions 22 is configured to fill the gap between two adjacent first portions 21, thereby connecting or adhering to the adjacent first portions 21. As a result, the first and second vibration generating modules 400, 500 can increase vibration energy due to the link within the unit cell of the first portions 21 by the second portions 22, thereby increasing vibration and ensuring piezoelectric properties and flexibility. The first and second vibration generating modules 400, 500 can form a large-area composite film (or organic / inorganic composite film) having a single-layer structure by arranging the second portions 22 and the first portions 21 alternately on the same plane along the length direction (X) based on one side. The large-area composite film has a thin thickness, so the thickness of the display device can be reduced. The first and second vibration generating modules 400 and 500 can be realized as a single film, allowing for slimming, thereby reducing or preventing an increase in driving voltage. Furthermore, the first and second vibration generating modules 400 and 500 according to the embodiments of the present specification can be realized in the form of a thin film including an inorganic material portion and an organic material portion, and therefore can be integrated into or attached to a display device without being interfered with by other components and / or mechanisms that constitute the display device. Thus, the first and second vibration generating modules 400 and 500 can be integrated into or internalized in the display device according to the embodiments of the present specification.

[0152] Each of the plurality of second portions 22 may include a polygonal pattern. Each of the plurality of second portions 22 may be disposed between the plurality of first portions 21. The plurality of first portions 21 and the plurality of second portions 22 may be disposed (or arranged) side by side on the same plane (or the same layer). Each of the plurality of second portions 22 may be connected or bonded to an adjacent first portion 21 by being configured to fill the gap between two adjacent first portions 21. For example, each of the plurality of second portions 22 may be a line pattern having a predetermined second width (d2) and may be disposed side by side with the first portion 21 interposed therebetween. Each of the plurality of second portions 22 may have the same size, for example, width, area, or volume, within the range of process error (or tolerance) occurring in the manufacturing process.

[0153] The size of the second portion 22 may be the same as or different from the size of the first portion 21. For example, the sizes of the first portion 21 and the second portion 22 may be set according to requirements such as vibration characteristics and / or flexibility of the first and second vibration generating modules 400, 500.

[0154] Each of the second portions 22 according to the embodiments of the present specification has a lower modulus and viscoelasticity than the first portion 21, thereby improving the reliability of the first portion 21, which is vulnerable to impact due to its brittle characteristics. For example, the first and second vibration generating modules 400 and 500 for vibrating the display panel 110 can have maximum vibration characteristics if they have impact resistance and high rigidity. To ensure that the first and second vibration generating modules 400 and 500 have impact resistance and high rigidity, each of the second portions 22 can be made of a material having a relatively high damping factor (tan δ) and relatively high stiffness. For example, each of the second portions 22 can be made of a material having a damping factor (tan δ) of 0.1 to 1 [Gpa] and a stiffness of 0 to 10 [Gpa]. The damping ratio (tan δ) and stiffness characteristics can also be explained by the correlation between loss factor and modulus, in which case each of the multiple second portions 22 can be made of a material having a loss factor of 0.01 to 1 and a modulus of 1 to 10 [Gpa].

[0155] The organic material portion of each of the second portions 22 may be made of an organic material or organic polymer having flexibility compared to the inorganic material portion of the first portion 21. For example, each of the second portions 22 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 22 may be expressed as a flexible adhesive portion, an expandable portion, a bending portion, a damping portion, a soft portion, or the like, but is not limited thereto.

[0156] The organic material portion according to the embodiments of the present disclosure may include at least one of an organic piezoelectric material and an organic non-piezoelectric material.

[0157] The organic material portion including the organic piezoelectric material can absorb shocks applied to the inorganic material portion (or the first portion), thereby improving the overall durability of the first and second vibration generating modules 400 and 500 and providing a certain level of piezoelectric characteristics. The organic piezoelectric material according to the embodiments of the present specification may be an organic material having electroactive properties. For example, it may include at least one of PVDF (Polyvinylidene fluoride), beta-PVDF (β-Polyvinylidene fluoride), and PVDF-TrFE (Polyvinylidene-trifluoroethylene), but is not limited thereto.

[0158] The organic material part including the organic non-piezoelectric material is made of a curable resin composition and an adhesive including the same, and thereby absorbs impacts applied to the inorganic material part (or the first part), thereby improving the overall durability of the first and second vibration generating modules 400 and 500. The organic non-piezoelectric material according to the embodiments 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.

[0159] For example, the organic material portion including the organic non-piezoelectric material may include an adhesion promoter for adhesion with the inorganic material portion and an epoxy resin for achieving the high rigidity required for the first and second vibration generating modules 400 and 500. For example, the adhesion promoter may be phosphoric acid-based. The organic material portion may be cured by at least one of thermal curing and photocuring. A solvent-free epoxy resin may be used to prevent a decrease in the thickness uniformity of the first and second vibration generating modules 400 and 500 due to shrinkage of the organic material portion caused by volatilization of the solvent during curing of the organic material portion.

[0160] In addition, the organic material portion including the organic non-piezoelectric material may further include a reinforcing agent to improve damping characteristics in addition to the high rigidity of the first and second vibration generating modules 400 and 500. For example, the reinforcing agent may be a core-shell type Methylmethacrylate-Butadiene-Styrene (MBS), and the content of the reinforcing agent may be 5 to 40 wt%. For example, the reinforcing agent is a core-shell type elastic material, and the shell portion has a high bonding strength with an epoxy resin such as an acrylic polymer, thereby improving the impact resistance or damping characteristics of the vibration generating module 500.

[0161] Therefore, the piezoelectric composite layer (PCL) can have a thin film shape by alternately connecting first portions 21 made of an inorganic material and having piezoelectric properties with second portions 22 made of an organic material and having flexibility. As a result, the piezoelectric composite layer (PCL) can bend to correspond to the shape of the display panel 110 and can have a size that can achieve set vibration and acoustic characteristics according to the vibration of the display panel 110. For example, the sizes of the first portion 21 and the second portion 22 can be set according to the piezoelectric properties and flexibility. For example, in a display device that requires piezoelectric properties more than flexibility, the size of the first portion 21 can be set larger than the size of the second portion 22. As another example, in a display device that requires flexibility more than piezoelectric properties, the size of the second portion 22 can be set larger than the size of the first portion 21. Therefore, the piezoelectric composite layer (PCL) can be adjusted according to the properties required for the display device, which has the advantage of making the design of the piezoelectric composite layer (PCL) easier.

[0162] The first electrode 23 may be disposed on a first surface (or front surface) of the piezoelectric composite layer (PCL). The first electrode 23 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 an alloy thereof.

[0163] The second electrode 24 may be disposed on a second surface (or back or rear surface) of the piezoelectric composite layer (PCL) opposite the first surface. The second electrode 24 according to 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 second electrode 24 may be made of the same material as the first electrode 23.

[0164] The first and second vibration generating modules 400 and 500 according to the embodiments of the present specification may further include a first protective layer 25 and a second protective layer 26 .

[0165] The first protective layer 25 is disposed on the first electrode 23 and can protect the first surface of the piezoelectric composite layer (PCL) or the first electrode 23. For example, the first protective layer 25 can be, but is not limited to, a PI (polyimide) film or a PET (polyethyleneterephthalate) film.

[0166] The second protective layer 26 is disposed on the second electrode 24 and can protect the second surface of the piezoelectric composite layer (PCL) or the second electrode 24. For example, the second protective layer 26 can be, but is not limited to, a PI (polyimide) film or a PET (polyethyleneterephthalate) film.

[0167] Each of the plurality of first portions 21 may have a first width (d1) parallel to the first direction (X) and a length parallel to the second direction (Y). Each of the plurality of second portions 22 may have a second width (d2) equal to the first width (d1) and a length parallel to the second direction (Y). For example, the first portions 21 and the second portions 22 may have a line shape or a stripe shape having the same size, but are not limited thereto.

[0168] Therefore, the piezoelectric composite layer (PCL) according to the embodiments of the present specification may have a single or single thin film shape by alternately arranging (or connecting) first portions 21 and second portions 22 having the same size on the same plane. The first portions 21 may vibrate vertically due to their vibration characteristics, and the second portions 22 may bend into a curved shape due to their flexibility. The piezoelectric composite layer (PCL) according to the embodiments of the present specification may be expanded to a desired size or length by side-bonding (or connecting) the first portions 21 and second portions 22. For example, the vibration generating module according to the embodiments of the present specification may be a piezoelectric composite in which the first portions 21 and second portions 22 are arranged. As another example, the vibration generating module according to the embodiments of the present specification may include the first portions 21 and second portions 22 arranged and a first electrode 23 and a second electrode 24. As another example, a vibration generating module according to an embodiment of the present specification may include a first part 21 and a second part 22 arranged therein, a first electrode 23 and a second electrode 24, and a first protective layer 25 and a second protective layer 26.

[0169] Therefore, the first and second vibration generating modules 400, 500 of the display device according to the embodiments of the present specification have the inorganic material part (first part) and the organic material part (second part) arranged on the same layer, so that the impact transmitted to the inorganic material part can be absorbed by the organic material part, thereby minimizing or preventing damage to the inorganic material part due to an impact applied to the display device from the outside and a deterioration in vibration performance (or deterioration in acoustic performance) due to the damage.

[0170] Furthermore, the first and second vibration generating modules 400 and 500 of the display device according to the embodiment of the present specification include piezoelectric ceramics having a perovskite crystal structure, and thus can vibrate (or undergo mechanical displacement) in response to an externally applied electrical signal. For example, when an AC voltage is applied to the inorganic material part (first part), the vibration generating module 500 can vibrate due to a bending phenomenon in which the bending direction alternates as the inorganic material part alternates between contraction and expansion due to the inverse piezoelectric effect. This vibration can vibrate the display panel 110, thereby providing acoustic or haptic feedback to the user.

[0171] Therefore, the first and second vibration generating modules 400 and 500 according to the embodiments of the present specification can vibrate in response to an electric signal to vibrate the display panel 110. As an example, the first and second vibration generating modules 400 and 500 can be sound generating devices that vibrate in response to a signal synchronized with an image displayed on the display panel 110 to vibrate the display panel 110 and generate sound. As another example, the first and second vibration generating modules 400 and 500 can be haptic devices that vibrate in response to a haptic feedback signal (or tactile feedback signal) synchronized with a user's touch on a touch panel (or touch sensor layer) disposed on or built into the display panel 110 to vibrate the display panel 110. For example, the first and second vibration generating modules 400 and 500 can be haptic devices that vibrate the display panel 110 to output feedback in response to a user's operation. As a result, the display panel 110 vibrates due to the vibrations of the first and second vibration generating modules 400 and 500, and can provide at least one of acoustic and haptic feedback to the user (or viewer).

[0172] Fig. 16A is a diagram showing a state in which both ends (or both edges) of the vibration generating module in Fig. 14 are warped upward, and Fig. 16B is a diagram showing a state in which both ends (or both edges) of the vibration generating module in Fig. 14 are warped downward.

[0173] 16A and 16B, in a piezoelectric composite including a piezoelectric composite layer (PCL) according to an embodiment of the present disclosure, each of the plurality of first portions 21 vibrates in response to an electric field generated by an applied signal, causing both ends (or both edges) (EP) in the first length direction (X) to bend upward (+Z) or downward (-Z). In this case, since each of the plurality of second portions 22 filled or disposed between the plurality of first portions 21 has flexibility, even if both ends (or both edges) (EP) of the piezoelectric composite layer (PCL) bend upward (+Z) or downward (-Z), damage or performance degradation of the inorganic material portion, i.e., the first portions 21, may not occur. Therefore, a display device including first and second vibration generating modules 400 and 500 including a piezoelectric composite according to an embodiment of the present disclosure may be applied to a flexible display device, for example, a curved display device bent at a predetermined radius of curvature, but is not limited thereto. For example, it can be used in a rollable display apparatus that is wound up or unwound in a spiral form, a bendable display apparatus, a wearable display apparatus that is worn around the wrist, etc. The bendable display apparatus may be, but is not limited to, an edge-bending display apparatus, a bezel-bending display apparatus, or an active-bending display apparatus.

[0174] FIG. 17 is a diagram showing a vibration generating module according to another embodiment of the present specification.

[0175] 17, a piezoelectric composite layer (PCL) according to another embodiment of the present disclosure may have a circular shape. For example, the piezoelectric composite layer (PCL) may include a plurality of first portions 21 spaced apart from each other and second portions 22 surrounding each of the plurality of first portions 21.

[0176] Each of the first portions 21 may have a disk shape. Since each of the first portions 21 is made of an inorganic material having the vibration characteristics as described above, a redundant description thereof will be omitted.

[0177] The second portion 22 may be disposed between or fill the plurality of first portions 21 and surround each side of the plurality of first portions 21. The second portion 22 is made of a flexible organic material as described above, and therefore a repeated description thereof will be omitted. The second portion 22 provides flexibility between the plurality of first portions 21, thereby enabling the piezoelectric composite layer (PCL) or the first and second vibration generating modules 400, 500 to deform into various two-dimensional or three-dimensional shapes in response to deformation between the plurality of first portions 21.

[0178] Each of the plurality of first portions 21 may have various shapes other than a disk shape, such as, but not limited to, an elliptical shape, a polygonal shape, or a donut shape.

[0179] Each of the plurality of first portions 21 may have a dot shape, such as a minute circle, ellipse, polygon, or doughnut shape, and the display device including the first and second vibration generating modules 400, 500 can deform into various shapes due to the flexibility of the second portion 22 disposed between the plurality of first portions 21. For example, the display device including the first and second vibration generating modules 400, 500 shown in FIGS. 12 to 14 can deform only into a two-dimensional shape, such as a concave or convex shape, due to the line-shaped first portion 21 (or inorganic material portion), while the display device including the first and second vibration generating modules 400, 500 shown in FIG. 15 can deform into various shapes, including not only two-dimensional shapes but also three-dimensional shapes, due to the dot-shaped first portion 21 (or inorganic material portion). Therefore, the first and second vibration generating modules 400 and 500 made of a piezoelectric composite having a piezoelectric composite layer (PCL) according to another embodiment of the present specification can improve the design freedom depending on the shape of the display device and can be applied to flexible display devices that can be deformed into various shapes in two or three dimensions.

[0180] Fig. 18 is a diagram showing a vibration generating module according to another embodiment of the present specification, and Fig. 19 is a diagram showing a vibration generating module according to another embodiment of the present specification.

[0181] 18, a piezoelectric composite layer (PCL) according to another embodiment of the present disclosure may have a triangular shape. For example, the piezoelectric composite layer (PCL) may include a plurality of first portions 21 spaced apart from each other and a second portion 22 surrounding each of the plurality of first portions 21.

[0182] Each of the plurality of first portions 21 may have a triangular shape. For example, each of the plurality of first portions 21 may have a triangular plate shape. Since each of the plurality of first portions 21 is made of an inorganic material portion having the vibration characteristics as described above, a redundant description thereof will be omitted.

[0183] For example, four adjacent first portions 21 among the plurality of first portions 21 may be disposed adjacent to each other to form a quadrangle (or square). Each vertex of the four adjacent first portions 21 forming the quadrangle may be disposed adjacent to the center of the quadrangle.

[0184] 19, six adjacent first portions 21 among the plurality of first portions 21 may be arranged adjacent to each other to form a hexagon (or regular hexagon). The vertices of the six adjacent first portions 21 forming the hexagon may be arranged adjacent to the center of the hexagon. Thus, 2N (N is a natural number greater than or equal to 2) adjacent first portions 21 among the plurality of first portions 21 having a triangular shape may be arranged adjacent to each other to form a 2N-gonal shape.

[0185] The second portion 22 may be disposed between or fill the plurality of first portions 21 and surround each side of the plurality of first portions 21. The second portion 22 is made of a flexible organic material as described above, and therefore a repeated description thereof will be omitted. The second portion 22 provides flexibility between the plurality of first portions 21, allowing the piezoelectric composite layer (PCL) or the first and second vibration generating modules 400, 500 to deform into various shapes, including not only two-dimensional shapes but also three-dimensional shapes, in response to deformation between the plurality of first portions 21.

[0186] Therefore, in a display device including first and second vibration generating modules 400, 500 made of a piezoelectric composite having a piezoelectric composite layer (PCL) according to another embodiment of the present specification, the display panel can deform to correspond to various three-dimensional deformations of the first and second vibration generating modules 400, 500. Furthermore, the plurality of first portions 21 having a triangular or hexagonal shape may be a fine pattern that can correspond to various shapes, and in a display device using the first and second vibration generating modules 400, 500 including this, the display panel can deform to various shapes due to the flexibility of the second portion 22 disposed between the plurality of first portions 21. Furthermore, a display device including a piezoelectric composite layer (PCL) according to another embodiment of the present specification can be applied to the same flexible display device as the display device including the first and second vibration generating modules 400, 500 shown in FIG.

[0187] 20A to 20D are diagrams showing the positions at which a vibration generator according to an embodiment of the present specification is arranged. FIG. 21 is a diagram showing the sound pressure of a vibration generator according to an embodiment of the present specification. FIGS. 22A and 22B are diagrams showing the acoustic velocity of a vibration generator according to another embodiment of the present specification. FIG. 23 is a diagram showing the acoustic output characteristics of a vibration generator according to an embodiment of the present specification.

[0188] 20A to 23 are diagrams showing an embodiment in which the vibration generators described in FIG. 10 are arranged on a support member. FIGS. 20A to 20D are diagrams showing vibration generators 430 and 530 arranged on plates 353 and 354. FIG. 20A shows vibration generators 430 and 530 arranged on the rear surfaces of plates 353 and 354. FIG. 20B shows vibration generators 430 and 530 arranged on the side surfaces of plates 353 and 354. FIG. 20C shows vibration generators 430 and 530 arranged on the rear and side surfaces of plates 353 and 354, with tapered sides. Tapered arrangements are arrangements that satisfy the total reflection condition. FIG. 20D shows vibration generators 430 and 530 arranged on the rear and side surfaces of plates 353 and 354, with flat sides. Flat arrangements are arrangements that do not satisfy the total reflection condition. 20A to 20D will be described, the same results can be expected when the vibration generator is disposed on a support member. The rear surface of the plate or the rear surface of the support member may be the rear surface relative to the display module.

[0189] FIG. 21 shows the sound pressures in FIGS. 20A to 20C. The sound pressure was measured using a free-field microphone with the center of the sound emission position as the center of the measurement position. The frequency was measured using a B&K Pulse LAN-XI device. The sound pressure of vibration-generating module A in FIG. 20A is approximately 78.8 dB. The sound pressure of vibration-generating module B in FIG. 20B is approximately 87.7 dB. The sound pressure of vibration-generating module C in FIG. 20C is approximately 79.1 dB. Therefore, as shown in FIG. 20B, the sound pressure increases when the vibration-generating module is placed on the side of a support member or plate. However, because the space on the side of a display module is limited, it was recognized that placing a vibration generator in the space on the side is difficult. Therefore, the inventors of this specification conducted experiments to confirm the acoustic characteristics when the vibration-generating module is placed on the side of the support member, including the back of the support member.

[0190] Figure 22A shows the acoustic characteristics of Figure 20D, and Figure 22B shows the acoustic velocity of Figure 20C. The acoustic velocity was measured using an intensity probe, with the center of the front of the acoustic radiation position as the center of the measurement position. A voltage of 7.7 Vrms was applied as a sine signal. The analysis device used for the measurement was a B&K Pulse LAN-XI FFT Analyzer.

[0191] In Figures 22A and 22B, the acoustic velocity increases from Min to Max. Referring to Figure 22A, when the vibration generator is placed flat on the side of a plate or support member, the maximum acoustic velocity (Max) is 514.01 mm / s, forming a circle around the maximum value and radiating all over the surface. Referring to Figure 22B, when the vibration generator is placed on the back and side of the plate or support member with a tapered shape, the maximum acoustic velocity (Max) is 710.83 mm / s, and the maximum value is widely distributed, improving the acoustic output characteristics. For example, when placed with a tapered shape to achieve total reflection, sound can be reflected between the back and side of the support member. Therefore, when the vibration generator is placed with a tapered shape on the side of the plate or support member, the sound velocity direction has directionality depending on the radiation position.

[0192] In Figure 23, the solid line represents the acoustic output characteristics of Figure 20C, and the dotted line represents the acoustic output characteristics of Figure 20D. The acoustic output characteristics were measured at a distance of 10 cm from the front of the acoustic emission position, and a voltage of 7.7 Vrms was applied as a sine signal. The measurement was performed using a LAN-XI FFT Analyzer to measure the sound pressure radiated from the air between the support member and the display module. Referring to Figure 23, it can be seen that when vibration generators are placed on the back and side of the plate or support member, with a tapered side, the sound pressure increases between 5 kHz and 20 kHz compared to Figure 20D.

[0193] 20A to 23, it can be seen that sound pressure increases when the vibration generator is disposed on the side of the plate or support member. Because the space on the side of the display module is limited, it can be seen that sound pressure increases when the vibration generator is disposed in a tapered shape that includes the side and rear surfaces of the support member.

[0194] 24A and 24B are other cross-sectional views of line II' shown in FIG. 1 according to other embodiments of the present specification.

[0195] Referring to Figures 24A and 24B, a display device according to another embodiment of the present specification may include a display module 100, a panel guide 200, a support member 300, first and second vibration generating modules 400, 500, and a structure 900.

[0196] The support member 300 according to the embodiments of the present specification may be disposed at an inclination relative to the display module 100. First and second vibration generating modules 400 and 500 may be disposed on the rear surface of the support member 300. The first and second vibration generating modules 400 and 500 may be disposed on the first and second forming portions 371 and 372 of the support member 300. For example, the degree of inclination of the support member 300 may vary from one side to the other side of the support member 300. For example, when the side on which the second connecting member 800 is disposed is one side of the support member 300, the degree of inclination of the support member 300 may increase from the other side to one side of the support member 300. The second connecting member 800 may be disposed between the support member 300 and the structure 900. The second connecting member 800 may be, but is not limited to, a single-sided adhesive, a single-sided foam adhesive, a single-sided tape, a single-sided foam tape, a double-sided adhesive, a double-sided foam adhesive, a double-sided tape, a double-sided foam tape, or a bond.

[0197] The structure 900 according to the embodiments of the present specification may be disposed on one side of the display module 100. For example, since the structure 900 is disposed on one side of the display module 100, sounds from the first and second vibration generating modules 400 and 500 may be reflected by the structure 900 and output toward the front of the display module 100. For example, the structure 900 may be an acoustic guide structure that guides the sounds from the first and second vibration generating modules 400 and 500 to be output toward the front or side of the display module 100. Therefore, the sounds from the first and second vibration generating modules 400 and 500 may be reflected by the side of the structure 900 and output toward the front of the display module 100, thereby providing a display device that can output high-frequency sounds.

[0198] For example, the structure 900 may include a bottom 910, an acoustic guide 920, and a side 930. The bottom 910 may be disposed on the rear surface of the support member 300. The side 930 may be spaced apart from one side surface of the display module 100 and connected to the bottom 910. The acoustic guide 920 may be disposed between the bottom 910 and the side 930, and may be located at a corner between the inner surface of the side 930 and the bottom 910. For example, the acoustic guide 920 may allow the sound from the first and second vibration generating modules 400 and 500 to be reflected by the acoustic guide 920 and output toward the front surface of the display module 100. Therefore, the structure 900 may be structured so that the sound from the first and second vibration generating modules 400 and 500 is reflected by the structure 900 and output toward the front surface of the display module 100. For example, the acoustic guide 920 may have a curved shape or a rounded corner shape. For example, if the sound guide unit 920 has a curved surface or rounded corners, the reflection of sound traveling from the gap spaces (GS) (or sound emission spaces) between the first and second vibration generating modules 400, 500 and the support member 300 can be further improved. For example, the path of sound generated in the vibration generating module 400 may be the sixth sound path (SP6). For example, the sixth sound path (SP6) may be in the front and side directions of the display module 100. For example, the sixth sound path (SP6) may be in the side and front directions (or thickness direction of the display module) traveling from the gap spaces (GS) (or sound emission spaces) between the first and second vibration generating modules 400, 500 and the support member 300. For example, the sixth sound path (SP6) may be in the side and front directions reflected from the gap spaces (GS) (or sound emission spaces) between the first and second vibration generating modules 400, 500 and the support member 300.

[0199] For example, the sound from the first and second vibration generating modules 400, 500 may be reflected between the first and second vibration generating modules 400, 500 and the rear surface of the support member 300 and output toward the front of the display module 100. For example, the sound from the first and second vibration generating modules 400, 500 may be reflected off the side surface of the structure 900 and output toward the front of the display module 100. For example, the tilted first and second vibration generating modules 400, 500 may be an acoustic guide structure that guides the sound from the first and second vibration generating modules 400, 500 to be output toward the front or side of the display module 100. For example, the tilted first and second vibration generating modules 400, 500 and / or the structure 900 may be an acoustic guide structure that guides the sound from the first and second vibration generating modules 400, 500 to be output toward the front and / or side of the display module 100. Therefore, the inclined first and second vibration generating modules 400, 500 can increase the area in which sound is reflected between the support member 300 and the first and second vibration generating modules 400, 500, and the sound can be reflected from the side of the structure 900 and output toward the front of the display module 100, thereby further improving the acoustic characteristics in the high-frequency range.

[0200] 24B, the support member 300 includes at least one hole 300s, and the at least one hole 300s may be different toward the center of the support member 300. The support member 300 including the at least one hole 300s may be formed by press forming or press molding, but is not limited thereto.

[0201] For example, the at least one hole 300s may be formed to improve acoustic output at the side of the display module 100. For example, the at least one hole 300s may have a height that decreases from one side to the opposite side. For example, the at least one hole 300s may be different toward the center of the support member 300. For example, the at least one hole 300s may be different from one side to the other side of the display module 100. For example, the at least one hole 300s overlapping the first and second vibration generating modules 400 and 500 may be different from one side to the other side of the display module 100. For example, the size of the at least one hole 300s overlapping the first and second vibration generating modules 400 and 500 may be different from one side to the other side of the display module 100.

[0202] For example, at least one hole 300s can improve the acoustic reflection characteristics between the support member 300 and the first and second vibration generating modules 400, 500, thereby improving the acoustics in the high frequency range. The support member 300 including the holes 300s may be an acoustic guide structure that guides sound from the first and second vibration generating modules 400, 500 to be output in the front or side direction of the display module 100. For example, the support member 300 and / or the structure 900 including at least one hole 300s may be an acoustic guide structure that guides sound from the first and second vibration generating modules 400, 500 to be output in the front or side direction of the display module 100. Therefore, the inclined first and second vibration generating modules 400, 500 can increase the reflection area of ​​sound between the support member 300 and the first and second vibration generating modules 400, 500, and the sound can be reflected at the side of the structure 900 and output in the front direction of the display module 100, thereby further improving the acoustic characteristics of the high frequency range and providing a display device that can output low, mid, and high frequency sounds.

[0203] Figures 25A and 25B are other cross-sectional views taken along line II' in Figure 1 according to another embodiment of the present specification. Figures 25A and 25B are the same as those shown in Figures 24A and 24B except that the first and second vibration generating modules are disposed on a reflective sheet, and therefore detailed description will be omitted or will be given briefly.

[0204] Referring to Figures 25A and 25B, a display device according to another embodiment of the present specification may include a display module 100, a panel guide 200, a support member 300, first and second vibration generating modules 400, 500, and a structure 900.

[0205] The support member 300 according to the embodiment of the present specification may be disposed at an angle with respect to the display module 100. The first and second vibration generating modules 400 and 500 may be disposed on the reflective sheet 133.

[0206] For example, the sound from the first and second vibration generating modules 400, 500 may be reflected between the first and second vibration generating modules 400, 500 and the rear surface of the support member 300 and output toward the front of the display module 100. For example, the sound from the first and second vibration generating modules 400, 500 may be reflected off the side surface of the structure 900 and output toward the front of the display module 100. For example, the tilted first and second vibration generating modules 400, 500 may be an acoustic guide structure that guides the sound from the first and second vibration generating modules 400, 500 to be output toward the front or side of the display module 100. For example, the tilted first and second vibration generating modules 400, 500 and / or the structure 900 may be an acoustic guide structure that guides the sound from the first and second vibration generating modules 400, 500 to be output toward the front and / or side of the display module 100. Therefore, the inclined support member 300 and the support member 300 including at least one hole 300s can increase the area in which sound is reflected between the first and second vibration generating modules 400, 500, and can be reflected at the side of the structure 900 and output toward the front of the display module 100, thereby further improving the acoustic characteristics of the high-frequency range and providing a display device that can output sound in the low, mid, and high frequency ranges.

[0207] 25B , the presence of at least one hole 300s can improve the reflection characteristics of sound between the support member 300 and the first and second vibration generating modules 400, 500, thereby improving high-frequency sound. For example, the support member 300 including at least one hole 300s can be an acoustic guide structure that guides sound from the first and second vibration generating modules 400, 500 to be output in the front or side direction of the display module 100. For example, the support member 300 and / or the structure 900 including at least one hole 300s can be an acoustic guide structure that guides sound from the first and second vibration generating modules 400, 500 to be output in the front or side direction of the display module 100. Therefore, the inclined support member 300 and the support member 300 including at least one hole 300s can increase the area in which sound is reflected between the first and second vibration generating modules 400, 500, and can be reflected at the side of the structure 900 and output toward the front of the display module 100, thereby further improving the acoustic characteristics of the high-frequency range and providing a display device that can output sound in the low, mid, and high frequency ranges.

[0208] 26A to 26C are diagrams showing a vibration generating module and a partition according to an embodiment of the present specification.

[0209] 26A to 26C, a partition 600 may be disposed between the support member 300 and the display panel 110. The partition 600 may be an air gap or space in which sound is generated when the display panel 110 is vibrated by the first and second vibration generating modules 400 and 500. An air gap or space that generates or transmits sound may be defined as a partition. The partition 600 may separate sounds or separate channels, thereby preventing or reducing unclear sounds caused by sound interference. The partition 600 may also be called, but is not limited to, an enclosure or a baffle.

[0210] Referring to FIG. 26A , a first partition 610 may be disposed between the support member 300 and the display panel 110. For example, the first partition 610 may be disposed along the front edge (or border) of the support member 300 and the rear edge (or border) of the display panel 110. The first partition 610 may be an air gap or space where sound is generated when the display panel 110 is vibrated by the first and second vibration generating modules 400 and 500. For example, the air gap may be a vibration space, sound pressure space, sound box, resonating section, resonance tube, or resonating section, but is not limited to these terms. The first partition 610 may be made of an elastic material that can be compressed to a certain extent. For example, the first partition 610 may be made of a polyurethane or polyolefin material, but is not limited thereto. For example, the first partition 610 may be, but is not limited to, a single-sided adhesive, a single-sided foam adhesive, a single-sided tape, a single-sided foam tape, a double-sided adhesive, a double-sided foam adhesive, a double-sided tape, a double-sided foam tape, or a bond. As another example, the first forming section 371 may be a partition of the first vibration generating module 400, and the second forming section 372 may be a partition of the second vibration generating module 500.

[0211] 26B, a first partition 610 may be disposed between the support member 300 and the display panel 110. A second partition 620 may be further disposed to entirely surround the first and second vibration generating modules 400 and 500. The second partition 620 may reduce reflected waves from the first and second vibration generating modules 400 and 500, thereby further improving acoustics. The second partition 620 may be made of the same material as the first partition 610, but is not limited to this.

[0212] 26C , a first partition 610 may be disposed between the support member 300 and the display panel 110. A third partition 630 may surround the first vibration generating module 400, and a fourth partition 640 may surround the second vibration generating module 500. The third partition 630 may be disposed between the display panel 110 and the support member 300 and surround the first vibration generating module 400. For example, the third partition 630 may have the same or different shape as the first forming portion 371. For example, if the first forming portion 371 has a square shape, the third partition 630 may also have a square shape. As another example, the third partition 630 may have the same or different shape as the first vibration generating module 400.

[0213] The third partition 630 may limit or define a vibration region or vibration area of ​​the display panel 110 caused by the first vibration generating module 400. For example, as the size of the third partition 630 increases, the vibration region of the rear region of the display panel 110 increases, thereby improving the low-mid range or low-mid-high range sound on the left side.

[0214] The fourth partition 640 may be disposed between the display panel 110 and the support member 300 and may surround the second vibration generating module 500. For example, the fourth partition 640 may have the same shape as the third partition 630 to achieve symmetry between the acoustics on the left and right sides of the rear surface of the display panel.

[0215] The fourth partition 640 may limit or define a vibration region or vibration area of ​​the display panel 110 caused by the second vibration generating module 500. For example, as the size of the fourth partition 640 increases, the vibration region of the rear region of the display panel 110 increases, thereby improving the low-mid frequency range or low-mid-high frequency range of the right side sound. The third and fourth partitions 630 and 640 may be made of the same material as the first partition 610, but are not limited thereto.

[0216] Therefore, the third and fourth partitions 630 and 640 limit the vibration regions or vibration areas of the first and second vibration generating modules 400 and 500, thereby improving the symmetry between the left and right sounds generated by the vibration of the display panel 110 and optimizing the sound pressure characteristics of each of the left and right sounds. As another example, when the third and fourth partitions 630 and 640 are provided, the first partition 610 can be omitted.

[0217] 26A to 26C, the piezoelectric composites constituting the first and second vibration generating modules 400 and 500 can be arranged in the horizontal direction of the display panel or the support member. The vibration characteristics of the vibration generating module can be smoothly generated when the vibration is oriented in the longitudinal direction of the vibration generating module. For example, the vibration characteristics of the vibration generating module can be improved when the piezoelectric composites are arranged perpendicular to the longitudinal direction of the vibration generating module (or the vertical direction of the rear cover). Alternatively, the piezoelectric composites can be arranged in the vertical direction of the display panel or the support member.

[0218] 27A and 27B are diagrams showing a vibration generating module and a partition according to another embodiment of the present specification.

[0219] 27A, the partition 600 may include a first partition 610 and a second partition 620. The second partition 620 may be configured in a circular shape. The second partition 620 may entirely surround the first and second vibration generating modules 400 and 500. The second partition 620 may be made of the same material as the first partition 610, but is not limited to this.

[0220] 27B, a third partition 630 surrounding the first vibration generating module 400 and a fourth partition 640 surrounding the second vibration generating module 500 may be further disposed. The third partition 630 may be disposed between the display panel 110 and the support member 300 and may have a circular shape surrounding the first vibration generating module 400. The fourth partition 640 may be disposed between the display panel 110 and the support member 300 and may have a circular shape surrounding the second vibration generating module 500. The remaining description is the same as that of FIG. 26C, so a repeated description thereof will be omitted.

[0221] The display device according to the embodiments of the present disclosure may be applied to various applications that output sound by vibration of a display module without a separate speaker, such as a mobile device, a video phone, a smart watch, a watch phone, a wearable device, a foldable device, a rollable device, a bendable device, a flexible device, a curved device, 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 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 generating module of the present specification may be applied to an organic light emitting lighting device or an inorganic light emitting lighting device. When the vibration generating module is applied to a lighting device, the vibration generating module may function as a light and a speaker. When the display device of the present specification is applied to a mobile device, the vibration generating module may function as a speaker or a receiver, but is not limited thereto.

[0222] A display device according to an embodiment of the present specification can be described as follows.

[0223] A display device according to an embodiment of the present specification may include a display module including a display panel that displays images, a support member arranged on the rear surface of the display module, and a first vibration generating module arranged on the rear surface of the display module and outputting sounds in different frequency ranges.

[0224] The display device according to the embodiments of the present specification may further include a panel support portion that supports the rear edge region of the display panel and is supported or housed in the support member, and the panel support portion may include a support portion that is bonded or connected to the rear edge region of the display panel and a side portion that is connected to the support portion and surrounds the side of the support portion.

[0225] According to some examples herein, the first vibration generating module includes a first vibration generating device and a second vibration generating device, and the first vibration generating device can output sound in the low-frequency range, and the second vibration generating device can output sound in the mid-frequency range or the mid-high frequency range.

[0226] According to some examples herein, each of the first vibration generator and the second vibration generator can be configured to include a piezoelectric composite layer, a first electrode, and a second electrode.

[0227] According to some examples herein, the piezoelectric composite layer may include a plurality of first portions and a plurality of second portions each disposed between two adjacent first portions of the plurality of first portions.

[0228] According to some examples herein, the piezoelectric composite layer can have a circular or triangular shape.

[0229] According to some examples herein, the display device may further include a first forming portion arranged on the support member, and a first vibration generating device and a second vibration generating device may be arranged on the first forming portion.

[0230] According to some examples herein, the display device may further include a first forming portion disposed on the support member and a first plate disposed on the first forming portion, and a first vibration generating device and a second vibration generating device may be disposed on the first plate.

[0231] According to some examples of the present specification, the device may further include a first forming portion disposed on the support member, and a hole disposed on one side of the first forming portion.

[0232] According to some examples in this specification, the display device may further include a first groove portion and a second groove portion arranged at the ends (or edges) of one side and the other side of the support member, and a fifth vibration generating device and a sixth vibration generating device arranged in the first groove portion and the second groove portion.

[0233] According to some examples herein, the display device may further include a third plate disposed between the support member and the fifth vibration generating device, and a fourth plate disposed between the support member and the sixth vibration generating device.

[0234] According to some examples herein, the display device may further include a reflective sheet arranged on the back of the display panel, and the first vibration generating module may be arranged on the back of the reflective sheet corresponding to the back of the display module.

[0235] According to some examples herein, the display device may further include a second vibration generating module including a third vibration generating device and a fourth vibration generating device that output sounds in different sound ranges, and the rear surface of the display module may include a first rear area and a second rear area, and the first vibration generating device and the second vibration generating device may be arranged in the first rear area, and the third vibration generating device and the fourth vibration generating device may be arranged in the second rear area.

[0236] According to some examples herein, the first vibration generator and the second vibration generator may be arranged asymmetrically with respect to the lateral direction of the display module with respect to the third vibration generator and the fourth vibration generator.

[0237] According to some examples herein, the first vibration generating device and the third vibration generating device may be positioned at the center of the display module, and the second vibration generating device and the fourth vibration generating device may be positioned at the end (or edge) of the display module.

[0238] According to some examples herein, the third vibration generating device can output sound in the low frequency range, and the fourth vibration generating device can output sound in the mid frequency range or mid-high frequency range.

[0239] According to some examples herein, the display device may further include a first forming portion and a second forming portion arranged on the support member, and a first plate and a second plate arranged on the first forming portion and the second forming portion, wherein the first vibration generating device and the second vibration generating device are arranged on the first plate, and the third vibration generating device and the fourth vibration generating device are arranged on the second plate.

[0240] According to some examples herein, the display device may further include a hole disposed on one side of the first forming portion and the second forming portion.

[0241] According to some examples herein, the display device may further include a first forming portion and a second forming portion arranged on the support member, and the first vibration generating device and the second vibration generating device may be arranged on the first forming portion, and the third vibration generating device and the fourth vibration generating device may be arranged on the second forming portion.

[0242] According to some examples herein, the display device may further include a first forming portion, a second forming portion, and a third forming portion arranged on the support member, wherein the second vibration generating device is arranged on the first forming portion, the fourth vibration generating device is arranged on the second forming portion, and the first vibration generating device or the third vibration generating device is arranged on the third forming portion.

[0243] According to some examples herein, the display device may further include a first forming portion, a second forming portion, a third forming portion, and a fourth forming portion arranged on the support member, and the first vibration generating device may be arranged on the first forming portion, the second vibration generating device may be arranged on the second forming portion, the third vibration generating device may be arranged on the third forming portion, and the fourth vibration generating device may be arranged on the fourth forming portion.

[0244] According to some examples in this specification, the first to fourth vibration generators may be disposed between the support member and the display panel.

[0245] According to some examples herein, the display device may further include a fifth vibration generating device arranged at the rear end (or edge) of the support member corresponding to the first rear region, and a sixth vibration generating device arranged at the rear end (or edge) of the support member corresponding to the second rear region.

[0246] According to some examples herein, the fifth vibration generator and the sixth vibration generator can output sound in the high frequency range.

[0247] According to some examples herein, the display device may further include a third plate disposed between the support member and the fifth vibration generating device, and a fourth plate disposed between the support member and the sixth vibration generating device.

[0248] According to some examples herein, the first to sixth vibration generators may be made of a piezoelectric composite.

[0249] According to some examples in this specification, the display device may further include a reflective sheet arranged on the back of the display panel, wherein the first vibration generating device and the second vibration generating device are arranged on the back of the reflective sheet corresponding to a first back area of ​​the display module, and the third vibration generating device and the fourth vibration generating device are arranged on the back of the reflective sheet corresponding to a second back area of ​​the display module.

[0250] According to some examples herein, the display device may further include a first groove portion arranged at an end (or edge) of one side of the support member, a second groove portion arranged at an end (or edge) of the other side of the support member, a fifth vibration generating device arranged in the first groove portion, and a sixth vibration generating device arranged in the second groove portion.

[0251] The display device according to the embodiment of the present specification may further include a partition surrounding the vibration generating module.

[0252] A display device according to an embodiment of the present specification may include a display module including a display panel that displays images, a support member arranged on the rear surface of the display module, and a vibration generating module arranged on the rear surface of the display module and including at least two vibration generating devices having different sound range bands from the center to the end (or edge) of the display module based on the horizontal direction of the display module.

[0253] The display device according to the embodiments of the present specification may further include a panel support portion that supports the rear edge region of the display panel and is supported or housed in the support member, and the panel support portion may include a support portion that is bonded or connected to the rear edge region of the display panel and a side portion that is connected to the support portion and surrounds the side of the support portion.

[0254] According to some examples herein, the two or more vibration generating devices may further include a plate on which the two or more vibration generating devices may be disposed.

[0255] According to some examples herein, the support member further includes a first forming portion, in which two or more vibration generating devices are disposed, and the two or more vibration generating devices are capable of outputting sound in the low-mid frequency range or the low-mid-high frequency range.

[0256] According to some examples in the present specification, the support member further includes a first forming portion and a second forming portion, wherein the first vibration generating device and the second vibration generating device among the two or more vibration generating devices are arranged in the first forming portion, and the third vibration generating device and the fourth vibration generating device among the two or more vibration generating devices are arranged in the second forming portion, wherein the first vibration generating device and the third vibration generating device are arranged in the center of the display module and output low-frequency sound, and the second vibration generating device and the fourth vibration generating device are arranged adjacent to the first vibration generating device and the third vibration generating device and can output mid-frequency or mid-high frequency sound.

[0257] According to some examples in this specification, the first vibration generating device and the second vibration generating device may be arranged asymmetrically or symmetrically with respect to the third vibration generating device and the fourth vibration generating device based on the lateral direction of the display module.

[0258] According to some examples herein, the support member further includes a first forming portion, a second forming portion, and a third forming portion, wherein the first vibration generating device of the two or more vibration generating devices is arranged in the first forming portion, the second vibration generating device of the two or more vibration generating devices is arranged in the second forming portion, and the third vibration generating device of the two or more vibration generating devices is arranged in the third forming portion, wherein the first vibration generating device and the second vibration generating device output sound in the mid-range or mid-to-high range, and the third vibration generating device is arranged in the center of the display module and can output sound in the low-range range.

[0259] According to some examples herein, the support member further includes a first forming portion, a second forming portion, a third forming portion, and a fourth forming portion, wherein the first forming portion has a first vibration generating device of the two or more vibration generating devices arranged therein, the second forming portion has a second vibration generating device of the two or more vibration generating devices arranged therein, the third forming portion has a third vibration generating device of the two or more vibration generating devices arranged therein, and the fourth forming portion has a fourth vibration generating device of the two or more vibration generating devices arranged therein, wherein the first vibration generating device and the third vibration generating device are arranged at the center of the display module and can output low-frequency sound, and the second vibration generating device and the fourth vibration generating device can output mid-frequency sound or mid-high frequency sound.

[0260] According to some examples herein, the support member may be disposed at an angle relative to the display module.

[0261] According to some examples herein, the support member may be arranged at an angle relative to the display module, and the support member may further include a plurality of holes that vary from one side of the support member to the other.

[0262] According to some examples herein, each of the two or more vibration-generating devices can be configured to include a piezoelectric composite, a first electrode, and a second electrode.

[0263] According to some examples herein, the piezoelectric composite layer may include a plurality of first portions and a plurality of second portions each disposed between two adjacent first portions of the plurality of first portions.

[0264] According to some examples herein, the piezoelectric composite layer can have a circular or triangular shape.

[0265] According to some examples herein, the display device may further include at least one groove portion disposed at the end (or edge) of one side and the other side of the support member, and a fifth vibration generating device and a sixth vibration generating device disposed in each of the at least one groove portion.

[0266] According to some examples herein, the fifth vibration generator and the sixth vibration generator can output sound in the high frequency range.

[0267] According to some examples herein, the support member may further include a vibration generating device disposed on a side surface of the support member or on both the side surface and the rear surface of the support member.

[0268] According to some examples herein, the vibration generating device may output sound in the high frequency range.

[0269] According to some examples of the present specification, the support member may further include a vibration generating device disposed on a side surface of the support member or on both the side surface and the rear surface of the support member, and disposed so as to have a taper.

[0270] According to some examples herein, the display device may further include a reflective sheet disposed on the rear surface of the display panel, and the vibration generating module may be disposed on the rear surface of the reflective sheet.

[0271] According to some examples herein, the display device may further include a partition surrounding the vibration generating module.

[0272] The features, structures, effects, etc. described in the above-described embodiments of the present specification are included in at least one example of the present specification and are not necessarily limited to only one example. Furthermore, the exemplified features, structures, effects, etc. in at least one example of the present specification can be combined or modified with other examples by a person skilled in the art to which the present specification pertains. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present specification.

[0273] The present specification described above is not limited to the above-mentioned examples and the attached drawings, and it will be apparent to those skilled in the art that multiple substitutions, modifications, and changes are possible within the scope of the technical subject matter of the present specification. Therefore, the scope of the present specification is defined by the claims set forth below, and all modifications and variations derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present specification. [Explanation of symbols]

[0274] 100: Display module 110: Display panel 130: Backlight 200: Panel Guide 300: Support member 400, 500: Vibration generation module 410, 420, 430, 510, 520, 530: Vibration generator

Claims

1. a display module including a display panel for displaying images; a support member on a rear surface of the display module, the support member including a rear portion that covers and supports the display module from its sides to its rear surface, and side portions that are connected to edge regions of the rear portion; a vibration generating module formed by accommodating two or more vibration generators that output sounds in two or more different frequency ranges in an accommodating portion formed on the rear surface; a gap space formed between the support member and the vibration generating module, the receiving portion is configured to provide the gap space; A display device, wherein the display module is configured to vibrate in response to acoustic waves generated in the gap space by vibration of the two or more vibration generating devices.

2. the vibration generating module includes a first vibration generating device and a second vibration generating device; The display device according to claim 1 , wherein the first vibration generator and the second vibration generator are configured to output sounds in different sound ranges.

3. The display device according to claim 2 , wherein each of the first vibration generating device and the second vibration generating device includes a piezoelectric composite layer, a first electrode, and a second electrode.

4. A display device as described in claim 2 or 3, wherein the accommodating section is configured to include the first vibration generating device and the second vibration generating device, or the accommodating section is configured to completely surround the first vibration generating device and the second vibration generating device.

5. Further comprising a first plate in the housing portion, The display device according to claim 2 , wherein the first vibration generator and the second vibration generator are disposed on the first plate.

6. further comprising an adhesive member between the support member and an edge of the first plate; The display device of claim 5 , wherein the gap space is between the support member and the first plate.

7. A display device as described in claim 2 or 3, further comprising a hole configured in the accommodating portion so as to be in communication with the gap space.

8. a first slit and a second slit disposed on edges of one side and the other side of the support member; 8. The display device according to claim 1, further comprising a fifth vibration generator and a sixth vibration generator arranged in the first slit and the second slit.

9. a third plate located between the support member and the fifth vibration generator; The display device according to claim 8 , further comprising: a fourth plate located between the support member and the sixth vibration generating device.

10. further comprising a reflective sheet on the back surface of the display panel; The display device according to any one of claims 1 to 9, wherein the vibration generating module is configured on the back surface of the reflective sheet corresponding to the back surface of the display module and configured to output sound waves to the back surface of the reflective sheet.

11. a reflective sheet on the back surface of the display panel; an adhesive member between an edge of the first plate and the reflective sheet; the first vibration generator and the second vibration generator are configured to output sound waves to a rear surface of the reflection sheet; The display device according to claim 5 , wherein the gap space is between the housing portion and the first plate so as to surround the first vibration generator and the second vibration generator.

12. the vibration generating module further includes a third vibration generating device and a fourth vibration generating device that output sounds in different frequency ranges; the rear surface of the display module includes a first rear surface area and a second rear surface area; the first vibration generator and the second vibration generator are configured in the first rear area, The display device according to claim 2 , wherein the third vibration generator and the fourth vibration generator are arranged in the second rear area.

13. the first vibration generator and the third vibration generator are configured at the center of the display module; The display device according to claim 12 , wherein the second vibration generating device and the fourth vibration generating device are configured on edges of the display module.

14. the first vibration generator is configured to output sound in a low frequency range; the second vibration generator is configured to output sound in a mid-frequency range or a mid-to-high frequency range; the third vibration generator is configured to output sound in a low frequency range, The display device according to claim 12 or 13, wherein the fourth vibration generating device is configured to output a sound in a mid-range or mid-to-high range.

15. a first receiving portion configured in the support member to provide the gap space; a second receiving portion configured in the support member to provide the gap space; further comprising a first plate and a second plate in the first receiving portion and the second receiving portion, the first vibration generator and the second vibration generator are configured on the first plate, The display device according to claim 12, wherein the third vibration generator and the fourth vibration generator are configured on the second plate.

16. a first hole formed in the first receiving portion so as to be in communication with the gap space; The display device of claim 15, further comprising: a second hole configured in the second receiving part to be in communication with the gap space.

17. further comprising a first receiving portion and a second receiving portion configured on the support member to provide the gap space; the first vibration generator and the second vibration generator are configured in the first housing section, The display device according to claim 12, wherein the third vibration generator and the fourth vibration generator are disposed in the second housing portion.

18. further comprising a first receiving portion, a second receiving portion, and a third receiving portion configured on the support member to provide the gap space; the second vibration generator is disposed in the first housing portion, the fourth vibration generator is disposed in the second housing portion, The display device according to any one of claims 12 to 14, wherein the first vibration generator or the third vibration generator is arranged in the third housing portion.

19. further comprising a first receiving portion, a second receiving portion, a third receiving portion, and a fourth receiving portion configured on the support member to provide the gap space; the first vibration generator is configured in the first housing section, the second vibration generator is configured in the second housing section, the third vibration generator is configured in the third housing section, The display device according to any one of claims 12 to 14, wherein the fourth vibration generating device is configured in the fourth housing portion.

20. 20. The display device according to claim 12, wherein the first vibration generator to the fourth vibration generator are arranged between the support member and the display panel.

21. a fifth vibration generator configured on an edge of a rear surface of the support member corresponding to the first rear surface region; The display device according to any one of claims 12 to 20, further comprising: a sixth vibration generating device configured on an edge of the rear surface of the support member corresponding to the second rear region.

22. a third plate located between the support member and the fifth vibration generator; The display device of claim 21 , further comprising: a fourth plate between the support member and the sixth vibration generating device.

23. 23. The display device according to claim 21, wherein each of the first to sixth vibration generating devices includes a piezoelectric composite.

24. The display panel further includes a reflective sheet disposed on a rear surface thereof, the first vibration generator and the second vibration generator are configured on a rear surface of the reflective sheet corresponding to a first rear surface area of ​​the display module, and are configured to output sound waves to the rear surface of the reflective sheet; A display device described in any one of claims 12 to 23, wherein the third vibration generating device and the fourth vibration generating device are configured on the rear surface of the reflective sheet corresponding to the second rear surface area of ​​the display module and configured to output sound waves to the rear surface of the reflective sheet.

25. a first slit formed on an edge of one side of the support member; a second slit formed on the edge of the other side of the support member; a fifth vibration generator configured in the first slit; The display device according to any one of claims 12 to 20, further comprising: a sixth vibration generator configured in the second slit.

26. The display device according to any one of claims 1 to 25, further comprising a partition surrounding the vibration generating module.

27. A display module including a display panel configured to display video; a support member including a receiving portion formed on a rear surface of the display module; a vibration generating module including two or more vibration generating devices configured on a rear surface of the display module; a high-pitched sound generating device configured to vibrate an edge region of the display module and output sound in a lateral direction of the display panel; a plate in the receiving portion; an adhesive member between the receiving portion and the edge of the plate; a gap space formed between the support member and the plate, the two or more vibration generators are configured on the plate; the display module is configured to vibrate in response to sound waves generated in the gap space by vibrations of the two or more vibration generating devices; The two or more vibration generators are configured in the housing section, A display device, wherein the two or more vibration generating devices are configured to output sounds in a low-mid frequency band, or configured to output sounds in each of a low frequency band, a mid frequency band, and a high frequency band.

28. A display module including a display panel configured to display video; a support member including a receiving portion formed on a rear surface of the display module; a vibration generating module including two or more vibration generating devices configured on a rear surface of the display module; a high-pitched sound generating device configured to vibrate an edge region of the display module and output sound in a lateral direction of the display panel; a reflective sheet disposed on the rear surface of the display panel; a plate in the receiving portion; an adhesive member between the edge of the plate and the reflecting sheet; a gap space formed between the housing portion and the plate so as to surround the two or more vibration generators, the two or more vibration generators are configured on the plate and configured to output sound waves to a rear surface of the reflecting sheet; the display module is configured to vibrate in response to sound waves generated in the gap space by vibrations of the two or more vibration generating devices; The two or more vibration generators are configured in the housing section, A display device, wherein the two or more vibration generating devices are configured to output sounds in a low-mid frequency band, or configured to output sounds in each of a low frequency band, a mid frequency band, and a high frequency band.

Images