Display device

Abstract

To provide a display device that improves sound quality and enhances the sense of immersion for viewers.SOLUTION: A display device includes a back cover 300 placed on the back of a display module 100, and a vibration generating module 400 placed in the back area of the back cover 300. The vibration generating module 400 generates sound pressure by vibrating the back cover 300 and the back part that supports the back of the display module, vibrates the display module 100 through this sound pressure to generate sound S1 in the front direction, and outputs sound in the lateral direction via a first sound path SP1 by a second connecting member 800.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present application 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 installed in electronic products or home appliances such as televisions, monitors, laptops, smartphones, tablet computers, electronic pads, wearable devices, watch phones, portable information devices, navigation systems, or vehicle control display devices, and are used as screens for displaying images.

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

[0004] However, in a display device, since the sound output from the audio device travels behind or below the display panel, the sound quality is degraded due to interference between the sound reflected from the walls and floor, which makes it difficult to transmit the sound accurately and reduces the viewer's sense of immersion. DISCLOSURE OF THEINVENTION

[0005] The inventors of the present specification have recognized the above-mentioned problems of the display device and conducted several experiments to improve sound quality by making the sound travel in the front direction of the display panel when watching an image in front of the display panel. Through several experiments, the inventors have invented a display device having a new structure that can generate sound that can travel in front of the display panel and improve sound quality.

[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 capable of generating sound that can travel in a front direction of the display module.

[0008] Another aspect of the present disclosure is to provide a display device capable of generating sound that can travel in a frontal and lateral direction of the display module.

[0009] In addition to the technical problems of the present invention mentioned above, other features and advantages of the present invention will be clearly understood by those having ordinary skill in the art to which the present invention pertains from the following description or such description and explanation.

[0010] [Means for solving the problem] A display device according to an embodiment of the present specification includes a display module including a display panel for displaying images, a rear cover arranged on the rear of the display module, and a vibration generating module arranged in a rear area of ​​the rear cover, and sound output from the vibration generating module can be output in the front and rear directions of the display module.

[0011] A display device according to an embodiment of the present specification includes a display module including a display panel for displaying images, a rear cover arranged on the rear side of the display module, and a vibration generating module arranged in a rear area of ​​the rear cover and outputting sound to the display module, and the rear cover and the vibration generating module may be arranged non-parallel.

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

[0013] In addition to the effects of the present specification mentioned above, other features and advantages of the present specification will be clearly understood by those having ordinary skill in the art to which the present specification pertains from the following description or such description and explanation. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 illustrates a display device according to an embodiment of the present specification. [Diagram 2] FIG. 2 is a diagram showing the rear surface of a display device according to an embodiment of the present specification. [Diagram 3] FIG. 2 is an exploded view of a display device according to an embodiment of the present disclosure. [Figure 4] FIG. 1 illustrates a sound generating device according to an embodiment of the present specification. [Diagram 5] FIG. 1 is a top view of a display device according to an embodiment of the present specification. [Figure 6] 4 is a cross-sectional view taken along line II' shown in FIG. [Figure 7] FIG. 2 is an exploded view of a display device according to another embodiment of the present disclosure. [Figure 8] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 9] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 10] FIG. 13 is a diagram showing the rear surface of a display device according to another embodiment of the present specification. [Figure 11] FIG. 2 is a top view of a display device according to another embodiment of the present specification. [Figure 12] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 13] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 14] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 15] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 16] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 17] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 18] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 19] 1 is a diagram illustrating a display device according to another embodiment of the present specification. [Figure 20] 20 is a cross-sectional view taken along line II-II' shown in FIG. 19. [Figure 21] 1 is a graph showing acoustic output characteristics of a display device according to an embodiment of the present specification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The advantages and features of the present specification, and the methods for achieving them, will become clear with reference to the following examples described in detail with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, and may be realized in various different forms. The embodiments are provided merely to complete the disclosure of the present specification and to fully inform those skilled in the art of the invention to which the present specification pertains, and the present specification is defined only by the scope of the claims.

[0016] The shapes, sizes, ratios, angles, numbers, etc. shown in the drawings for describing an example of the present specification are merely illustrative, and the present specification is not limited to the matters shown in the drawings. The same reference numerals refer to the same components throughout the specification. In addition, in describing the present specification, if a detailed description of related known technology is determined to unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

[0017] 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 includes the plural unless otherwise expressly stated.

[0018] When interpreting elements, they are to be interpreted as including a range of error even if there is no separate explicit description.

[0019] When describing a positional relationship, for example when the positional relationship of two parts is described using "above", "at the top", "below", "beside", etc., one or more other parts may be located between the two parts, unless "immediately" or "directly" is used.

[0020] When describing a temporal relationship, for example when the temporal sequence is described using "after", "following", "next to", "before", etc., it can also include cases where the events are not consecutive, since "immediately" or "directly" are not used.

[0021] Although the terms "first", "second" and the like are used to describe various components, these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component referred to below may be the second component within the technical concept of the present invention.

[0022] The term "at least one" should be understood to include all combinations that can be presented from one or more of the associated items. For example, the meaning of "at least one of the first, second, and third items" may include all combinations of items that can be presented in two or more of the first, second, and third items, not just the first, second, or third items individually.

[0023] The features of each of the examples in this specification may be partially or fully combined or combined with each other, and various technical interlocking and driving mechanisms may be possible, and each example may be implemented independently of each other, or may be implemented together in a related relationship.

[0024] Hereinafter, examples of display devices according to embodiments of the present specification will be described in detail with reference to the accompanying drawings. In assigning reference numerals to components in each drawing, the same components may have the same reference numerals as much as possible even if they are shown in different drawings. In addition, the scales of the components shown in the accompanying drawings may be different from the actual scales for convenience of explanation, and therefore are not limited to the scales shown in the drawings.

[0025] The display device according to the embodiment of the present specification may include a vibration generating module. When configured with a sound generating device, which is a vibration generating module, there is a problem that it is difficult to ensure high-frequency sound due to the complex structure of the display device. To solve this problem, a piezoelectric vibration device made of a piezoelectric element or a piezoelectric material having a piezoelectric effect (or inverse piezoelectric characteristic) with a strong output in the high-frequency range may be further included. When a piezoelectric vibration device is configured, there is a problem that the cost of the display device increases and a separate configuration is required to realize an acoustic signal in the piezoelectric vibration device, which increases the cost. Therefore, the inventors of the present specification conducted several experiments to realize high-frequency sound without configuring a piezoelectric vibration device. Through several experiments, a display device with a new structure was invented. This will be described below.

[0026] FIG. 1 is a diagram illustrating a display device according to an embodiment of the present specification.

[0027] Referring to FIG. 1, the display apparatus according to the embodiment of the present specification may output sound (S1) by vibration of the display module 100 for displaying an image. For example, in a display device, the display module 100 may be vibrated by a vibration generating device (or a sound generating device) to generate sound (S1). The sound (S1) generated by the vibration of the display module 100 may be output to the front screen (FD) of the display apparatus. Therefore, the display apparatus according to the embodiment of the present specification may transmit sound by using the display module 100 as a diaphragm for generating sound and outputting sound (S1) to the front screen (FD) of the display module 100, thereby improving sound quality and enhancing the immersive feeling of the viewer.

[0028] Fig. 2 is a diagram showing the rear surface of a display device according to an embodiment of the present specification. Fig. 3 is an exploded view of a display device according to an embodiment of the present specification. Fig. 4 is a diagram showing an acoustic generating device according to an embodiment of the present specification. Fig. 5 is a top view of the display device. Fig. 6 is a cross-sectional view of line II' shown in Fig. 3.

[0029] 2 to 6, a display device according to an embodiment of the present specification may include a display module 100, a panel guide 200, a rear cover 300, and a vibration generating module 400.

[0030] The display module 100 may be, but is not limited to, a liquid crystal display module, such as a light-emitting display module, an electrophoretic display module, a micro light-emitting diode display module, an electrowetting display module, or a quantum dot light-emitting display module.

[0031] The rear cover (or back cover) 300 may cover the rear surface of the display module 100 while supporting the panel guide 200. The rear cover 300 may also support the vibration generating module 400. The rear cover 300 according to an example may function as a diaphragm and may include, but is not limited to, a metal material or a metal alloy material. For example, the rear cover 300 may be made of any of iron (Fe) material, aluminum (Al) material, magnesium (Mg) alloy material, magnesium lithium (Mg-Li) alloy material, and aluminum (Al) alloy material, but is not limited to these. When the rear cover 300 is made of a material including a non-ferrous metal, the sound of the low frequency band of the vibration generating module 400 may be further improved. For example, when the rear cover 300 is made of an iron metal, a vibration loss occurs due to the magnetic field of the vibration generating module 400, so that the acoustic characteristics of the vibration generating module 400 may be deteriorated. For example, the low frequency band may be 200 Hz or less, but is not limited to this.

[0032] The rear cover 300 in one example may include a rear or back portion 310 that supports the rear of the display module 100, and a side portion 330 that connects to an end or edge region (EP) of the rear portion 310 and supports the panel guide 200.

[0033] The rear unit 310 is disposed to cover the rear surface of the display module 100 and can support the display module 100. The rear unit 310 is configured to include a plate-like structure and can support the backlight 130 of the display module 100 and the vibration generating module 400. For example, the rear unit 310 can play a role in transmitting sound vibrations generated by vibrations of the vibration generating module 400 to the reflective sheet 133 of the backlight 130 by contacting the rear surface (or back surface) of the reflective sheet 133.

[0034] The back portion 310 may include a middle region (MA) that corresponds (or overlaps) with a middle region of the display module 100 and an end region or edge region (EA) that corresponds (or overlaps) with an end region or edge region (EA) of the display module 100.

[0035] The side portion 330 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 backlight storage space on the rear portion 310 and surround a side of the backlight 130 stored (or supported) in the backlight storage space. The side portion 330 may play a role in transmitting sound vibrations generated in the rear portion 310 by the vibration generating module 400 to the panel guide 200.

[0036] The rear cover 300 according to an example may further include a reinforcing portion 350. The reinforcing portion 350 may be a rigidity reinforcing portion since it can reinforce the rigidity of the rear cover 300, but is not limited thereto.

[0037] According to an example, the reinforcing portion 350 may be formed in an area (or a connecting area) where the rear portion 310 and the side portion 330 intersect. As an example, the reinforcing portion 350 may be formed along an end or edge area (EA) of the rear portion 310. For example, the reinforcing portion 350 may protrude toward the rear side from an end or one side of the rear portion 310 to have an inclined surface. When the rear cover 300 includes the reinforcing portion 350, the side portion 330 may be connected to an end or one side of the reinforcing portion 350.

[0038] The display device according to the embodiment of the present specification may further include a system rear cover (or system back cover) 600 disposed behind the rear cover 300 .

[0039] The system rear cover 600 may house the display module 100 in which the vibration generating module 400 is disposed, and may enclose the side of the display module 100. For example, the system rear cover 600 may be expressed as a set cover, a rear set cover, a rear set cover, an outermost set cover, a product cover, or an outermost product cover, but is not limited thereto.

[0040] The back surface (or rear surface) of the display module 100 may include a middle area (MA) and an end or edge area (EA). For example, the back surface (or rear surface) of the display module 100 may be divided into the middle area (MA) and the end or edge area (EA). The end or edge area (EA) of the display module 100 may be configured to accommodate the vibration generating module 400.

[0041] According to an example, the first sound generating device 410 and the second sound generating device 430 may be disposed at an edge region or an edge area (EA) of the rear cover 300. For example, the first sound generating device 410 and the second sound generating device 430 may be disposed along the edge region or an edge area (EA) of the rear cover 300. For example, the positions of the first and second sound generating devices 410, 430 may be disposed symmetrically or asymmetrically about the center of the display module 100 with reference to the first direction (X) (or horizontal direction) of the display module 100.

[0042] The display panel 110 according to the 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 .

[0043] The upper substrate 111 may be a first substrate or a thin film transistor array substrate, and may include a pixel array (or a display unit or a 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 supplied with a common voltage.

[0044] The upper substrate 111 may further include a pad portion provided at a first end or edge (or a first non-display portion) and a gate driving circuit provided at a second end or edge (or a second non-display portion).

[0045] The pad unit may supply an externally supplied signal to the pixel array and / or the gate driving circuit. For example, the pad unit 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. As an example, a first end or a first edge of the upper substrate 111 including the pad unit may protrude from a side surface corresponding to the first end or the first edge of the lower substrate 113, and the pad unit may be exposed in a rear (or back) direction toward the rear cover 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.

[0046] The gate driving circuit according to the embodiment of the present specification may be embedded (or integrated) in the second end or edge of the upper substrate 111 to connect with a plurality of gate lines. Movement The gate driver circuit may be realized by a shift register including transistors formed by the same process as the thin film transistors provided in the pixel region. The gate driver circuit according to another example may be realized in the form of an integrated circuit and included in the panel driver circuit, without being built into the upper substrate 111.

[0047] The lower substrate 113 is a second substrate or a color filter array substrate, and may include a pixel pattern that may include an opening region overlapping a pixel region formed in the upper substrate 111, and a color filter layer formed in the opening region. According to an example, the lower substrate 113 may have a size smaller than that of the upper substrate 111, but is not limited thereto. For example, the lower substrate 113 may overlap with a remaining portion of the upper substrate 111 except for a first end or a first edge. The lower substrate 113 may be bonded to a remaining portion of the upper substrate 111 except for a first end or a first edge, sandwiching a liquid crystal layer therebetween by a sealant.

[0048] 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 according to an electric field formed by a data voltage and a common voltage applied to a pixel electrode for each pixel.

[0049] The lower polarizing member 115 is attached to the lower surface of the lower substrate 113 and can polarize the light incident from the backlight 130 and traveling to the liquid crystal layer.

[0050] 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.

[0051] 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 using an electric field formed for each pixel according to a data voltage and a common voltage applied to each pixel.

[0052] In the display panel 110 according to an embodiment, an upper substrate 111 made of a thin film transistor array substrate constitutes an image display surface, so that the entire front surface can be exposed to the outside without being blocked by a separate mechanism.

[0053] In the display panel 110 according to another example, 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 example may have a shape obtained by inverting the display panel 110 according to the one example. In this case, the pad portion of the display panel 110 according to the another example may be covered by a separate mechanism.

[0054] The display module 100 according to an example 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 an external impact and prevent light leakage from the side of the display panel 110. The buffer member 150 according to an example may be made of a silicone-based or ultraviolet (UV) curable sealant (or resin). In consideration of a process tact time, the buffer member 150 may be made of an ultraviolet (UV) curable sealant. In addition, the buffer member 150 according to an example may be made of a color (e.g., blue, red, cyan, or black), but is not limited thereto. 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.

[0055] According to an example, 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 is extended long from a side corresponding to the outer side of the upper substrate 111 and 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 joint surface between the buffer member 150 and the upper substrate 111 (or the boundary portion between the buffer member 150 and the upper substrate 111) may be concealed by the extension portion of the upper polarizing member 117 and may not be exposed to the front of the display device where the viewer is located. If the buffer member 150 is not formed, the front surface of the display panel 110 is exposed to the front (FD) of the display device without being blocked by a separate mechanism, so that a light leakage phenomenon may occur on 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 to protect the side of the display panel 110. Not limited thereto, the buffer member 150 may be omitted.

[0056] The backlight 130 is disposed on the rear or back surface of the display panel 110 and can irradiate light to the rear surface of the display panel 110. The backlight 130 according to an example may include a light guide plate 131, a light source unit, a reflective sheet 133, and an optical sheet unit 135.

[0057] The light guide plate 131 is disposed on the rear cover 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 may cause light incident from a light source through the light incident surface to travel (or exit) toward 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.

[0058] The light source unit may irradiate light to a light incident surface provided on the light guide plate 131. The light source unit may be disposed on the rear cover 300 so as to overlap a first end or a first edge of the display panel 110. The light source unit according to an example may include a plurality of light emitting diode elements mounted on a light source printed circuit board to irradiate light to the light incident surface of the light guide plate 131.

[0059] The reflective sheet 133 may be disposed on the rear cover 300 so as to cover the rear surface or the back surface of the light guide plate 131. The reflective sheet 133 may reflect light incident from the light guide plate 131 toward the light guide plate 131, thereby minimizing light loss.

[0060] 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 an example 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 is not limited thereto, and may be configured as a combination of one or more layers selected from the group consisting of a diffusion sheet, a prism sheet, a dual brightness enhancement film, and a lenticular sheet, or may be configured as a single composite sheet having a function of diffusing and collecting light.

[0061] The panel guide 200 can support an edge region or border region (EA) on the rear side of the display panel 110. The panel guide 200 can be supported or housed in the rear cover 300 so as to overlap with the edge region or border region (EA) on the rear side of the display panel 110. The panel guide 200 can be disposed under the edge region or border region (EA) on the rear side of the display panel 110 so as not to protrude outside each side of the display panel 110.

[0062] The panel guide 200 according to an example embodiment 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.

[0063] The panel supporter 210 may be coupled to an edge or marginal area (EA) of the rear surface of the display panel 110 and supported by the rear cover 300. For example, the panel supporter 210 may have a rectangular band shape having an opening overlapping with a remaining middle area (MA) excluding the edge or marginal area (EA) of the rear surface of the display panel 110, but is not limited to such a 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.

[0064] 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 .

[0065] The guide side portion 230 may be connected to the panel support portion 210 and may wrap around the side of the rear cover 300. For example, the guide side portion 230 may be bent from the panel support portion 210 toward the side of the rear cover 300 to surround the side of the rear cover 300, or may be surrounded by the side of the rear cover 300.

[0066] The panel guide 200 according to an embodiment 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 act as a vibration transmitting member that transmits sound vibrations generated by the vibration generating module 400 to an end region or edge region (EA) of the display panel 110. Therefore, the panel guide 200 may transmit sound vibrations generated by the vibration generating module 400 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 sound vibrations generated by the vibration generating module 400 to the display panel 110 while maintaining the rigidity of the display panel 110.

[0067] The panel guide 200 according to an example embodiment may be coupled to an end or border area (EA) on the rear side of the display panel 110 via a first connecting member 250 .

[0068] The first connecting member 250 is interposed between an edge region or border region (EA) of the rear surface of the display panel 110 and the panel support portion 210 of the panel guide 200, and can position or connect the display panel 110 to the panel guide 200. The first connecting member 250 according to an example may include, but is not limited to, an acrylic-based or urethane-based adhesive material. For example, the first connecting member 250 may include an acrylic-based adhesive material having relatively excellent adhesive strength and high hardness so that vibration of the panel guide 200 can be well transmitted to the display panel 110. In this case, the first connecting member 250 may include a double-sided foam adhesive pad having an acrylic adhesive layer or an acrylic adhesive resin hardened layer.

[0069] According to an example, the front surface of the first connecting member 250 may be coupled to the lower substrate 113 or the lower polarizing member 115 of the display panel 110, and may be directly coupled to the edge region or border region (EA) 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 (EA) of the rear surface of the lower substrate 113 and surrounds the side surface of the lower polarizing member 115, thereby preventing light leakage from the side surface of the lower polarizing member 115.

[0070] The first connecting member 250 may provide a sound transmission space (STS) between the display panel 110 and the panel guide 200 to have a certain thickness (or height). The first connecting member 250 according to an example may be formed in a four-sided sealed type or a closed loop type on the panel support part 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 uppermost 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 the vibration of the backlight 130, or a panel vibration space that facilitates the vibration of the display panel 110 due to sound pressure.

[0071] 2 to 6, the vibration generating module 400 may be disposed in an edge region or an edge area (EA) of the rear cover 300. For example, the vibration generating module 400 may be disposed along the edge region or edge area (EA) of the rear cover 300.

[0072] The vibration generating module 400 can be disposed in the rear or back area of ​​the rear cover 300 to vibrate the area of ​​the display module 100. For example, the rear area of ​​the rear cover 300 can overlap with the edge area or border area (EA) of the display module 100, and the area of ​​the display module 100 can be the edge area or border area (EA).

[0073] The vibration generating module 400 according to an example may be coupled to or disposed in an edge region or border region (EA) of the rear part 310 of the rear cover 300. Thus, the vibration generating module 400 generates sound pressure by vibrating the edge region or border region (EA) of the rear part 310 in response to an externally input sound signal (or voice signal), and may vibrate the edge region or border region (EA) of the display module 100 through the sound pressure to generate sound (S1). The vibration generating module 400 according to an example may include, but is not limited to, a sound actuator or a sound exciter, and may be realized as a sound generating device using a coil (or voice coil) and a magnet.

[0074] FIG. 4 is a diagram illustrating a sound generating device according to an embodiment of the present specification.

[0075] The vibration generating module 400 according to the embodiment of the present specification may include a first sound generating device 410 and a second sound generating device 430.

[0076] 2 to 4, each of the first and second sound generating devices 410, 430 according to the embodiments of the present specification may include a module frame 401, a bobbin 402, a magnet member 403, a coil 404, a center pole 405, and a damper 406.

[0077] The module frame 401 may be supported by the rear portion 310. The module frame 401 according to an example may include a frame body 401a, an upper plate 401b, and a fixing bracket 401c.

[0078] The frame body 401a can be fixed to the rear part 310. The frame body 401a can serve as a lower plate that supports the magnet member 403.

[0079] The upper plate 401b may be disposed at the end or edge of the front surface of the frame body 401a so as to have a cylindrical shape with a hollow portion. The frame body 401a and the upper plate 401b may be formed into one body having a "U" shape. For example, the frame body 401a and the upper plate 401b may be expressed by other terms such as a yoke, without being limited to the term.

[0080] The fixing bracket 401c can protrude from a side surface of the upper plate 401b. The fixing bracket 401c is fixed to the rear part 310 by a connecting member of the module, so that the module frame 401 can be fixed to the rear part 310.

[0081] According to an example, the connecting member of the module may be a screw or a bolt that passes through the fixing bracket 401c and is fastened to the rear part 310 of the rear cover 300. In this case, a buffer ring may be interposed between the rear part 310 of the rear cover 300 and the fixing bracket 401c, and the buffer ring may prevent vibration of the rear part 310 from being transmitted to the module frame 401.

[0082] The connecting member of the module according to an example can fix the fixing bracket 401c or the module frame 401 to the rear part 310. For example, the connecting member of the module can include an adhesive member interposed between the fixing bracket 401c and the rear part 310. For example, the adhesive member 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, or a double-sided adhesive foam pad.

[0083] The bobbin 402 is disposed on the module frame 401 and can vibrate the rear part 310 of the rear cover 300. The bobbin 402 according to an example can be formed to have a hollow part 402a and coupled to the rear part of the rear part 310. For example, the bobbin 402 can be realized as a ring-shaped structure formed of a material made of processed pulp or paper, aluminum, magnesium or alloys thereof, synthetic resin such as polypropylene, or polyamide-based fiber, but is not limited thereto. The bobbin 402 can vibrate the rear cover 300 by vibrating, for example, by reciprocating up and down, due to a magnetic force.

[0084] The bobbin 402 according to an embodiment may have a circular or elliptical shape, but is not limited thereto. The oval-shaped bobbin 402 may include, but is not limited to, an elliptical shape, a rectangular shape with rounded corners, or a non-circular curved shape having a width different from its height. For example, the elliptical bobbin 402 may have a ratio of the diameter of the major axis to the diameter of the minor axis of 1.3:1 to 2:1. The elliptical bobbin 402 may improve the acoustics of the high frequency range more than the circular bobbin, and may have excellent heat dissipation characteristics since less heat may be generated due to vibration.

[0085] The magnet member 403 may be disposed on the module frame 401 so as to be accommodated in the hollow portion 402a of the bobbin 402. The magnet member 403 may be a permanent magnet inserted into the hollow portion 402a of the bobbin 402. The magnet member 403 according to an example may be realized by a sintered magnet such as barium ferrite, and the material of the magnet member 403 may be, but is not limited to, ferric oxide (Fe2O3), barium carbonate (BaCO3), neodymium magnet, strontium ferrite with improved magnetic component, alloy cast magnet of aluminum (Al), nickel (Ni), and cobalt (Co), etc. For example, the neodymium magnet may be, but is not limited to, neodymium-iron-boron (Nd-Fe-B).

[0086] The coil 404 is wound around the outer circumferential surface of the bobbin 402, and can supply an acoustic signal (or a voice signal) from the outside. The coil 404 can rise and fall together with the bobbin 402. When an acoustic signal (or a current) is applied to the coil 404, the entire bobbin 402 can vibrate, for example, reciprocate up and down, based on Fleming's left-hand rule based on the applied magnetic field formed around the coil 404 and the external magnetic field formed around the magnet member 403. For example, the coil 404 can be expressed as a voice coil, but is not limited to this term.

[0087] The center pole 405 can be disposed on the magnet member 403 to guide the vibration of the bobbin 402. For example, the center pole 405 can be surrounded by the bobbin 402 by being inserted or housed in the hollow portion 402a of the bobbin 402. For example, the center pole 405 can be expressed as a lift guide or pole pieces, but is not limited to these terms.

[0088] The damper 406 may be disposed between the module frame 401 and the bobbin 402. The damper 406 according to an example may be disposed between the frame body 401a of the module frame 401 and the upper outer circumferential surface of the bobbin 402. The damper 406 may have a bellows structure between one end and the other end, and may contract and relax due to the vibration of the bobbin 402. The damper 406 may limit the vibration distance (or the vertical movement distance) of the bobbin 402 through a restoring force. For example, when the bobbin 402 vibrates more than a certain distance or less than a certain distance, the bobbin 402 may return to its original state to its original position due to the restoring force of the damper 406. For example, the damper 406 may be expressed by other terms such as a spider, a suspension, or an edge, but is not limited to these terms.

[0089] Each of the first and second sound generating devices 410 and 430 according to an example of the present specification can be expressed as an internal magnet type (or a micro type) in which the magnet member 403 is inserted into the hollow portion 402a of the bobbin 402.

[0090] Each of the first and second sound generating devices 410 and 430 according to another example of the present specification may be expressed as an external magnetic type (or dynamic type) in which the magnet member 403 is disposed to surround the outside of the bobbin 402. The external magnetic type sound generating devices 410 and 430 are similar to the internal magnetic type sound generating devices, except that the magnet member 403 is disposed between the frame body 401a and the upper plate 401b, and the center pole 405 is disposed on the frame body 401a so as to be inserted into the hollow portion 402a of the bobbin 402, and therefore a description thereof will be omitted.

[0091] Each of the first and second sound generating devices 410 and 430 according to the embodiment of the present specification may further include a bobbin protection member 407 disposed between an upper portion of the bobbin 402 and the rear portion 310 of the rear cover 300 .

[0092] The bobbin protection member 407 can be formed into a cylindrical structure having an opening that overlaps with the hollow portion 402a of the bobbin 402, and can be placed on or coupled to the upper surface of the bobbin 402. The bobbin protection member 407 can protect the bobbin 402 by covering the upper surface of the bobbin 402, and therefore can prevent the bobbin 402 from being deformed due to an external impact.

[0093] The bobbin protection member 407 according to an example may be configured in the form of an injection molded product or a metal molded product. For example, the bobbin protection member 407 may be configured of a fiber reinforced material, a composite resin containing a fiber reinforced material, or a metal, and in this case, may also have a heat dissipation function for dissipating heat generated when the sound generating devices 410 and 430 are driven. The fiber reinforced material may be any one of carbon fiber reinforced plastics (CFRP), glass fiber reinforced plastics (GFRP), and graphite fiber reinforced plastics (GFRP), or a combination thereof, but is not limited thereto.

[0094] The bobbin protection member 407 according to an example may be bonded or connected to the bobbin 402 via a double-sided tape or an adhesive resin. For example, the adhesive resin may be, but is not limited to, an epoxy resin or an acrylic resin.

[0095] The bobbin protection member 407 according to another example can be joined or connected to the rear part 310 of the rear cover 300 via a double-sided tape or an adhesive resin.

[0096] Referring to FIG. 6, a display module 100 according to an embodiment of the present disclosure may include a display panel 110 and a backlight 130.

[0097] The display panel 110 can display an image using light emitted from the backlight 130. The display panel 110 can function as a diaphragm that vibrates due to the vibration (or drive) of the vibration generating module 400 and outputs sound (S1) in the forward direction (FD). For example, the display panel 110 can output sound (S1) due to the vibration of the vibration generating module 400.

[0098] The first sound generating device 410 may vibrate a first end region or first edge region (EA1) (or a left end region or left edge region) of the end region or edge region (EA) of the display module 100 to output sound (S1) to the front (FD) of the display panel 110. For example, when the first sound generating device 410 vibrates according to an acoustic signal, the first end region or first edge region (EA1) of the rear part 310 due to the vibration of the first sound generating device 410 may be vibrated to generate sound pressure in the gap space (GS) (or sound emission space) between the first sound generating device 410 and the rear cover 300, thereby vibrating the first end region or first edge region (EA1) of the display module 100 to generate sound (S1). For example, when the first sound generating device 410 vibrates in response to an acoustic signal, a sound pressure is generated in the gap space (GS) due to vibration of the first end region or first edge region (EA1) of the rear part 310 caused by the vibration of the first sound generating device 410, and sound pressure is generated in the sound transmission space (STS) due to vibration of the backlight 130 caused by this sound pressure, and sound (S1) generated by vibration of the display panel 110 due to the sound pressure generated in the sound transmission space (STS) may be output to the front (FD) of the display panel 110. Therefore, the sound waves generated by the vibration of the first sound generating device 410 are directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the sound (S1).

[0099] The second sound generating device 430 may vibrate a second end region or second edge region (EA2) (or a right end region or right edge region) of the end region or edge region (EA) of the display module 100 to output sound (S1) to the front (FD) of the display panel 110. For example, the second sound generating device 430 may vibrate the second end region or second edge region (EA2) of the rear part 310 in response to an acoustic signal to generate sound pressure in a gap space (GS) (or sound emission space) between the second sound generating device 430 and the rear cover 300, thereby vibrating the second end region or second edge region (EA2) of the display module 100 to generate sound (S1). For example, when the second sound generating device 430 vibrates in response to an acoustic signal, a sound pressure is generated in the gap space (GS) due to the vibration of the second end region or second edge region (EA2) of the rear part 310 caused by the vibration of the second sound generating device 430, and a sound pressure is generated in the sound transmission space (STS) due to the vibration of the backlight 130 caused by the sound pressure, and a sound (S1) generated by the vibration of the second end region or second edge region (EA2) 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 second sound generating device 430 are directly transmitted (or propagated) to the display module 100, thereby improving the sound pressure characteristics and sound quality of the sound (S1).

[0100] 3 to 6, the first sound-generating device 410 and the second sound-generating device 430 according to the embodiments of the present specification may be disposed at an end or edge of the rear surface of the rear cover 300. For example, the first sound-generating device 410 and the second sound-generating device 430 may be disposed apart from the rear surface of the rear cover 300. For example, the first sound-generating device 410 and the second sound-generating device 430 may be disposed on the rear cover 300 by a second connecting member 800. For example, the second connecting member 800 may be disposed between the first sound-generating device 410 and the second sound-generating device 430 and the rear cover 300.

[0101] In order to solve the problem that the sound generated by the first sound generating device 410 and the second sound generating device 430 is trapped between the first sound generating device 410 and the second sound generating device 430 and the rear cover 300 and is not output, the second connecting member 800 may be realized to have an opening or an open area. For example, the second connecting member 800 may have an opening or an open area on a side surface. For example, the second connecting member 800 may have a structure with an open side surface. For example, the second connecting member 800 may have an opening on one side surface. For example, the second connecting member 800 may have an opening on one side surface. For example, the sound of the first sound generating device 410 and the second sound generating device 430 may be output in a side direction of the rear cover 300 through one side surface of the second connecting member 800. Thus, the first sound generating device 410 and the second sound generating device 430 are disposed on the rear cover 300, and the sound of the first sound generating device 410 and the second sound generating device 430 may be output in the rear and side directions of the rear cover 300.

[0102] 6, the second connection member 800 having an opening or an open area allows the sound from the first sound generating device 410 and the second sound generating device 430 to be output toward the rear or side of the rear cover 300. Therefore, the path of the sound generated by the first sound generating device 410 and the second sound generating device 430 may be the first sound path (SP1). For example, when the first sound generating device 410 and the second sound generating device 430 are configured, the problem that high-frequency sound is not output can be solved by the sound output through the first sound path (SP1).

[0103] 4 to 6, the vibration generating module 400 according to the embodiment of the present specification may further include a first hole 409. The first hole 409 may block dust or foreign matter that may flow into the vibration generating module 400 through the second connecting member 800 having an opening or an open area. For example, the first hole 409 may be a plurality of holes communicating with the space between the end or edge of the rear cover 300 and the first and second sound generating devices 410 and 430. The first hole 409 may have a mesh structure, but is not limited thereto. For example, the first hole 409 may be disposed in a cover 408 disposed around the fixing bracket 401c. The cover 408 may be configured separately from the fixing bracket 401c, but is not limited thereto. For example, the cover 408 may be configured integrally with the fixing bracket 401c. For example, the cover 408 may be realized to cover or block all or a part of the opening (or open area) of the second connecting member 800.

[0104] Therefore, the vibration generating module according to the embodiment of the present specification is disposed in an end or edge region (EA) of the rear cover 300, and a connecting member having an opening on one side or one side is disposed between the rear cover 300 and the vibration generating module 400, so that sound can be output in the rear and side directions of the rear cover. For example, the sound generating devices 410 and 430 according to the embodiment of the present specification are disposed in an end or edge region (EA) of the rear cover 300, and a connecting member having an opening on one side is disposed between the rear cover 300 and the sound generating devices 410 and 430, so that sound can be output in the rear and side directions of the rear cover. As a result, a display device including a vibration generating module capable of outputting high-frequency sound can be provided.

[0105] Fig. 7 is an exploded view of a display device according to another embodiment of the present specification. Fig. 8 is a view showing a display device according to another embodiment of the present specification.

[0106] 7 and 8, a display device according to another embodiment of the present disclosure may include a display module 100, a panel guide 200, a rear cover 300, a vibration generating module 400, and a structure 900. In the embodiment shown in FIG.

[0107] The structure 900 according to the embodiment 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, the sound of the first and second sound generating devices 410 and 430 may be reflected by the structure 900 and output in a front direction of the display module 100. For example, the structure 900 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in a front direction or a side direction of the display module 100. For example, the structure 900 and / or a connecting member having an opening on one side or one side may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in a front direction or a side direction of the display module 100. Therefore, the sound of the vibration generating module 400 may be reflected by a side of the structure 900 and output to the front of the display module 100, thereby providing a display device that can output high-frequency sound.

[0108] For example, the structure 900 may include a bottom 910, an audio guide 920, a side 930, and a groove 950. The groove 950 may be a portion for arranging the vibration generating module 400, and may be arranged on one side of the bottom 910. The bottom 910 may be arranged on the rear surface of the rear cover 300. The side 930 may be spaced apart from one side of the display module 100 and may be connected to the bottom 910. The audio guide 920 may be arranged between the bottom 910 and the side 930, and may be a corner between the inner surface of the side 930 and the bottom 910. For example, the audio guide 920 may allow the audio of the vibration generating module 400 to be reflected by the audio guide 920 and output in the front direction of the display module 100. Thus, the audio of the vibration generating module 400 may be structured to be reflected by the structure 900 and output in the front direction of the display module 100. For example, the sound from the first and second sound generating devices 410 and 430 may be structured to be reflected by the structure 900 and output toward the front of the display module 100. For example, the sound guide unit 920 may be realized in a curved shape or a shape with rounded corners. For example, when the sound guide unit 920 is in a curved shape or a shape with rounded corners, the reflection of the sound proceeding from the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300 may be further improved. For example, the path of the sound generated by the vibration generating module 400 may be the second sound path (SP2). For example, the path of the sound generated by the first sound generating device 410 and the second sound generating device 430 may be the second sound path (SP2). For example, the second sound path (SP2) may be the front and side directions of the display module 100. For example, the second acoustic path (SP2) may be a side direction and a front direction (or a thickness direction of a display module) proceeding from the gap space (GS) (or a sound emission space) between the vibration generating module 400 and the rear cover 300. For example, the second acoustic path (SP2) may be a side direction and a front direction reflected in the gap space (GS) (or a sound emission space) between the vibration generating module 400 and the rear cover 300, and may be a side direction and a front direction outputted through the second connecting member 800.

[0109] 9 is a diagram showing a display device according to another embodiment of the present disclosure. Although not described further, the rear surface of the rear cover or the rear cover itself can also be tilted.

[0110] 9, the vibration generating module 400 may be disposed at an incline based on the rear surface of the rear cover 300. For example, the vibration generating module 400 may be disposed at an incline by the second connecting member 800 having one side open. For example, the vibration generating module 400 may be inclined by the height of the second connecting member 800. For example, the second connecting member 800 may have a height that is gradually lower from one side to the other side opposite to the one side. For example, the second connecting member 800 may include a first side parallel to one side, a second side connected to one end or edge of the first side, and a third side connected to the other end or edge of the first side and parallel to the second side, and the heights (or thicknesses) of the second and third sides may be lower as they are closer to the first side.

[0111] For example, in order to improve the sound output at the side of the display module 100, the inclination of the vibration generating module 400 may be different from one side to the other side of the rear cover 300. For example, when the side on which the second connecting member 800 is arranged is one side of the rear cover 300, the inclination of the vibration generating module 400 may be greater from one side to the other side of the rear cover 300. As a result, the sound of the vibration generating module 400 may be efficiently output from the other side of the second connecting member 800, one side of which is open. For example, the sound of the vibration generating module 400 may be reflected between the vibration generating module 400 and the rear surface of the rear cover 300 and output toward the front of the display module 100. For example, the sound of the vibration generating module 400 may be reflected at the side of the structure 900 and output toward the front of the display module 100. For example, the inclined vibration generating module 400 and the connecting member 800 having one side or one lateral opening may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the inclined vibration generating module 400, the connecting member 800 having one side or one lateral opening, and / or the structure 900 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front and / or lateral direction of the display module 100. Therefore, by configuring the connecting member having one side or one lateral opening, the sound of the vibration generating module 400 can be output in the lateral direction, and the inclined vibration generating module 400 can increase the area where the sound is reflected between the rear cover 300 and the vibration generating module 400, and the sound can be reflected at the lateral 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.

[0112] For example, the path of the sound generated in the vibration generating module 400 may be the third sound path (SP3). For example, the path of the sound generated in the first sound generating device 410 and the second sound generating device 430 may be the third sound path (SP3). For example, the third sound path (SP3) may be a side direction and a front direction reflected at the rear surface of the display module 100 (or a thickness direction of the display module). For example, the third sound path (SP3) may be a side direction and a front direction reflected at the gap space (GS) (or the sound emitting space) between the vibration generating module 400 and the rear cover 300, and may be a side direction and a front direction outputted through the second connecting member 800. For example, the third sound path (SP3) may be a side direction and a front direction reflected at the gap space (GS) (or the sound emitting space) between the vibration generating module 400 and the rear cover 300, and may be a front direction reflected at the side of the structure 900. Therefore, a display device capable of further improving the sound in the high frequency range can be provided.

[0113] FIG. 10 is a view showing the rear surface of a display device according to another embodiment of the present specification. FIG. 11 is a top view of a display device according to another embodiment of the present specification. FIG. 12 is a view showing a display device according to another embodiment of the present specification. FIGS. 10 to 12 show the display device shown in FIG. 8 with a modified rear cover structure. Therefore, in the following description, the rear cover will be described in detail, and the remaining components will be given the same reference numerals as in FIG. 8, and duplicate descriptions thereof will be omitted or will be described briefly.

[0114] 10 to 12, a display device according to another embodiment of the present specification may include a display module 100, a panel guide 200, a rear cover 300, a vibration generating module 400, and a structure 900.

[0115] The rear cover or back cover 300 according to other embodiments of the present specification may further include at least one second hole 420. The at least one second hole 420 may overlap with the vibration generating module 400. For example, the at least one second hole 420 may overlap with the first and second sound generating devices 410 and 430. For example, the at least one second hole 420 may be formed by a patterning process or a drilling process on the rear cover 300, but is not limited thereto.

[0116] For example, the at least one second hole 420 can improve the reflection characteristics of sound between the rear cover 300 and the vibration generating module 400, thereby improving the sound in the high frequency range. For example, the at least one second hole 420 can improve the reflection characteristics of sound between the rear cover 300 and the first and second sound generating devices 410 and 430, thereby improving the sound in the high frequency range. For example, the rear cover 300 including the at least one second hole 420 and the connecting member 800 having one side or one side open may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or side direction of the display module 100. For example, the rear cover 300 including the at least one second hole 420 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or side direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in a front or side direction of the display module 100. For example, the rear cover 300 including at least one second hole 420, the connecting member 800 having one side or one lateral opening, and / or the structure 900 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in a front or side direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 and / or the structure 900 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in a front or side direction of the display module 100.

[0117] For example, the sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second hole 420. For example, the sound of the first and second sound generating devices 410 and 430 may be output in the front direction of the display module 100 through the second hole 420. For example, the path of the sound generated by the first sound generating device 410 and the second sound generating device 430 through the second hole 420 may be a fourth sound path (SP4). For example, the fourth sound path (SP4) may be a front direction (or a thickness direction of the display module) output from the rear surface of the display module 100 through the second hole 420. For example, the fourth sound path (SP4) may be a front direction output from a gap space (GS) (or a sound emission space) between the vibration generating module 400 and the rear cover 300. For example, the path of the sound generated by the vibration generating module 400 may be a fifth sound path (SP5). For example, the path of the sound generated by the first sound generating device 410 and the second sound generating device 430 may be the fifth sound path (SP5). For example, the fifth sound path (SP5) may be a side direction and a front direction (or a thickness direction of the display module) that are reflected by the rear surface of the display module 100. For example, the fifth sound path (SP5) may be a direction in which the sound of the vibration generating module 400 is reflected by the side surface of the structure 900 and output toward the front surface of the display module 100. For example, the fifth sound path (SP5) may be a side direction and a front direction that are reflected by the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and a side direction and a front direction that are output through the second connecting member 800. For example, the fifth sound path (SP5) may be a direction in which the sound of the first and second sound generating devices 410, 430 is reflected by the side surface of the structure 900 and output toward the front surface of the display module 100. For example, the fifth acoustic path (SP5) may be a side direction and a front direction that reflects in the gap space (GS) (or sound emission space) between the vibration generating module 400 and the back cover 300.Therefore, since sound can be output from the vibration generating module 400 via the fourth sound path (SP4) and the fifth sound path (SP5), a display device in which sound in the high frequency range can be improved can be provided. For example, since sound can be output from the first and second sound generating devices 410, 430 via the fourth sound path (SP4) and the fifth sound path (SP5), a display device in which sound in the high frequency range can be improved can be provided.

[0118] As described in FIG. 9, the vibration generating module 400 may be disposed at an incline with respect to the rear surface of the rear cover 300. For example, the first and second sound generating devices 410 and 430 may be disposed at an incline with respect to the rear surface of the rear cover 300. For example, the sound of the vibration generating module 400 may be reflected between the vibration generating module 400 and the rear surface of the rear cover 300, and may be output toward the front surface of the display module 100 through at least one second hole 420. For example, the sound of the first and second sound generating devices 410 and 430 may be reflected between the first and second sound generating devices 410 and 430 and the rear surface of the rear cover 300, and may be output toward the front surface of the display module 100 through at least one second hole 420. Therefore, by configuring a connecting member having an opening on one side or one lateral side, the sound of the vibration generating module 400 can be output in a lateral direction, and the inclined vibration generating module 400 can increase the area where the sound is reflected between the rear cover 300 and the vibration generating module 400, thereby improving the high-frequency sound of the vibration generating module 400. Therefore, the inclined vibration generating module 400 can increase the area where the sound is reflected between the rear cover 300 and the vibration generating module 400, and the sound can be output in the front direction of the display module 100 through the second hole 420, and can be reflected on the side of the structure 900 and output in the front direction of the display module 100, thereby improving the high-frequency sound and improving the low-frequency sound. For example, the sound reflected by the rear cover 300 can increase the area in which the sound of the first and second sound generating devices 410 and 430 is reflected, and can be output toward the front of the display module 100 through the second hole 420, and can be reflected by the side of the structure 900 and output toward the front of the display module 100, thereby improving the high-frequency sound and improving the low-frequency sound.

[0119] Fig. 13 is a diagram showing a display device according to another embodiment of the present specification. Fig. 14 is a diagram showing a display device according to another embodiment of the present specification. Figs. 13 and 14 show a modified structure of the rear cover shown in Fig. 12. Therefore, in the following description, the rear cover will be described in detail, and the remaining components will be given the same reference numerals as in Fig. 12, and duplicated descriptions thereof will be omitted or will be described briefly.

[0120] 13 and 14, the rear cover 300 may be disposed at an incline with respect to the vibration generating module 400. For example, the rear cover 300 may be disposed at an incline with respect to the first and second sound generating devices 410 and 430. For example, the rear cover 300 may include at least one hole 420, and the at least one hole 420 may be different toward the center of the rear cover 300.

[0121] For example, the rear cover 300 including at least one hole 420 in Fig. 13 may be formed by press forming or press molding, but is not limited thereto. For example, the at least one pattern 420 in Fig. 14 may be formed by a patterning process or a punching process of the rear cover 300, but is not limited thereto. In Fig. 14, the at least one hole 420 may be at least one pattern. For example, the at least one hole or pattern 420 may be formed by patterning the rear cover 300 or by chemical etching, NC machining (e.g., machining by a numerically controlled machine), drilling, or laser machining, but is not limited thereto.

[0122] For example, the at least one hole or pattern 420 may be realized to improve the acoustic output at the side of the display module 100. For example, the at least one hole or pattern 420 may have a height that is gradually lower from one side to the other side opposite to the one side. For example, the at least one hole or pattern 420 of the structure may be different toward the center of the rear cover 300. For example, the at least one hole or pattern 420 may be different from one side to the other side of the display module 100. For example, the at least one hole or pattern 420 overlapping with the vibration generating module 400 may be different from one side to the other side of the display module 100. For example, the at least one hole or pattern 420 overlapping with the first sound generating device 410 may be different from one side to the other side of the display module 100. The at least one hole or pattern 420 overlapping with the second sound generating device 430 may be different from the other side to one side of the display module 100.

[0123] For example, in order to improve the sound output at the side of the display module 100, the inclination of the rear cover 300 may be different from one side to the other side of the display module 100. For example, when the side on which the second connection member 800 is arranged is one side of the display module 100, the inclination of the rear cover 300 may be larger from one side to the other side of the display module 100. As a result, the sound of the vibration generating module 400 may be efficiently output from the other side of the second connection member 800 having one side open. For example, the sound of the first and second sound generating devices 410 and 430 may be efficiently output from the other side of the second connection member 800 having one side open. For example, the sound of the vibration generating module 400 may be reflected between the vibration generating module 400 and the rear surface of the rear cover 300 and output toward the front of the display module 100, or may be reflected at the side of the structure 900 and output toward the front of the display module 100. For example, the sound from the first and second sound generating devices 410, 430 can be reflected between the first and second sound generating devices 410, 430 and the rear surface of the rear cover 300 and output toward the front of the display module 100, or can be reflected off the side of the structure 900 and output toward the front of the display module 100.

[0124] For example, at least one second hole 420 can improve the reflection characteristics of sound between the rear cover 300 and the vibration generating module 400, thereby improving the sound in the high frequency range. For example, at least one second hole 420 can improve the reflection characteristics of sound between the rear cover 300 and the first and second sound generating devices 410, 430, thereby improving the sound in the high frequency range. For example, the rear cover 300 including at least one second hole 420 and the connecting member 800 having one or one side open can be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or side direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 and the connecting member 800 having one or one side open can be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in the front or side direction of the display module 100. For example, the rear cover 300 including at least one second hole 420, the connecting member 800 having one side or one lateral opening, and / or the structure 900 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in a front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420, the connecting member 800 having one side or one lateral opening, and / or the structure 900 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410 and 430 to be output in a front or lateral direction of the display module 100.

[0125] Referring to FIG. 13, the sound generated by the vibration generating module 400 may be output in a side direction and a front direction reflected by the rear surface of the display module 100. For example, the sound generated by the first and second sound generating devices 410, 430 may be output in a side direction and a front direction reflected by the rear surface of the display module 100. For example, the path of the sound generated by the vibration generating module 400 may be a sixth sound path (SP6). For example, the path of the sound generated by the first and second sound generating devices 410, 430 may be a sixth sound path (SP6). For example, the sixth sound path (SP6) may be a direction in which the sound of the vibration generating module 400 is reflected by a side surface of the structure 900 and output in a front direction of the display module 100. For example, the sixth sound path (SP6) may be a direction in which the sound of the first and second sound generating devices 410, 430 is reflected by a side surface of the structure 900 and output in a front direction of the display module 100. For example, the sixth acoustic path (SP6) may be a side direction and a front direction reflected in the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300, and may be a side direction and a front direction output through the second connecting member 800. For example, the sixth acoustic path (SP6) may be a side direction and a front direction reflected in the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300.

[0126] The sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second hole 420. For example, the sound of the first and second sound generating devices 410 and 430 may be output in the front direction of the display module 100 through the second hole 420. For example, the path of the sound generated in the vibration generating module 400 through the second hole 420 may be the seventh sound path (SP7). For example, the path of the sound generated in the first and second sound generating devices 410 and 430 through the second hole 420 may be the seventh sound path (SP7). For example, the seventh sound path (SP7) may be in the front direction (or the thickness direction of the display module) output from the rear surface of the display module 100 through the second hole 420. For example, the seventh sound path (SP7) may be in the front direction output from the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300 through the second hole 420. Therefore, since sound can be output from the vibration generating module 400 via the sixth sound path (SP6) and the seventh sound path (SP7), a display device can be provided that can further improve the sound in the high frequency range.

[0127] Therefore, the rear cover 300 including the second hole 420 can increase the area where sound is reflected between the rear cover 300 and the vibration generating module 400, thereby improving sound in the high frequency range. For example, by forming a connecting member having an opening on one side or one lateral side, sound from the vibration generating module 400 can be output in a lateral direction, and the rear cover 300 including the second hole 420 can increase the area where sound is reflected between the rear cover 300 and the vibration generating module 400. Therefore, the area where sound from the vibration generating module 400 is reflected can be increased by the sound reflected by the rear cover 300, and the sound can be output in the front direction of the display module 100 through the second hole 420, thereby providing a display device in which sound in the high frequency range can be improved. For example, the area in which the sound of the first and second sound generating devices 410 and 430 is reflected can be increased by the sound reflected by the rear cover 300, and the sound can be output toward the front of the display module 100 through the second hole 420, and the sound reflected by the side of the structure 900 can be output toward the front of the display module 100, so that a display device in which high-frequency sound can be improved can be provided.

[0128] Referring to FIG. 14, the sound generated by the vibration generating module 400 may be output in a side direction and a front direction reflected by the rear surface of the display module 100. For example, the sound generated by the first and second sound generating devices 410, 430 may be output in a side direction and a front direction reflected by the rear surface of the display module 100. For example, the path of the sound generated by the vibration generating module 400 may be the eighth sound path (SP8). For example, the path of the sound generated by the first and second sound generating devices 410, 430 may be the eighth sound path (SP8). For example, the eighth sound path (SP8) may be a direction in which the sound of the vibration generating module 400 is reflected by a side surface of the structure 900 and output in a front direction of the display module 100. For example, the eighth sound path (SP8) may be a direction in which the sound of the first and second sound generating devices 410, 430 is reflected by a side surface of the structure 900 and output in a front direction of the display module 100. For example, the eighth acoustic path (SP8) may be a side direction and a front direction reflected in the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300, and may be a side direction and a front direction output through the second connecting member 800. For example, the eighth acoustic path (SP8) may be a side direction and a front direction reflected in the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300.

[0129] The sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second pattern 420. For example, the sound of the first and second sound generating devices 410, 430 may be output in the front direction of the display module 100 through the second pattern 420. For example, the path of the sound generated in the vibration generating module 400 through the second pattern 420 may be the ninth sound path (SP9). For example, the path of the sound generated in the first and second sound generating devices 410, 430 through the second pattern 420 may be the ninth sound path (SP9). For example, the ninth sound path (SP9) may be a front direction (or a thickness direction of the display module) output from the rear surface of the display module 100 through the second pattern 420. For example, the ninth sound path (SP9) may be a front direction output from a gap space (GS) (or a sound emission space) between the vibration generating module 400 and the rear cover 300 through the second pattern 420. Therefore, since sound can be output from the vibration generating module 400 via the eighth sound path (SP8) and the ninth sound path (SP9), a display device can be provided that can further improve sound in the high frequency range.

[0130] Therefore, the rear cover 300 including the second pattern 420 can increase the area where sound is reflected between the rear cover 300 and the vibration generating module 400, thereby improving sound in the high frequency range. For example, by forming a connecting member having an opening on one side or one lateral side, sound from the vibration generating module 400 can be output in a lateral direction, and the rear cover 300 including the second pattern 420 can increase the area where sound is reflected between the rear cover 300 and the vibration generating module 400. Therefore, the area where sound from the vibration generating module 400 is reflected can be increased by the sound reflected by the rear cover 300, and the sound can be output in the front direction of the display module 100 via the second pattern 420, thereby providing a display device in which sound in the high frequency range can be improved. For example, the area in which the sound of the first and second sound generating devices 410 and 430 is reflected can be increased by the sound reflected by the rear cover 300, and can be output toward the front of the display module 100 through the second pattern 420, and the sound reflected by the side of the structure 900 can be output toward the front of the display module 100, thereby providing a display device in which the high-frequency range sound can be improved.

[0131] 13 and 14, the area where sound from the vibration generating module 400 is reflected can be increased by the inclined rear cover 300 structure and / or the second hole or pattern 420 arranged in the rear cover 300, and the sound can be output toward the front of the display module 100 through the second hole or pattern 420, so that a display device with improved sound in the high frequency range can be provided. For example, the sound from the vibration generating module 400 is reflected by the inclined rear cover 300, increasing the sound diffracted in the high frequency range, and the sound can be transmitted toward the front of the display module 100, so that a display device with improved sound in the high frequency range can be provided.

[0132] Fig. 15 is a diagram showing a display device according to another embodiment of the present specification. Fig. 15 shows a modified structure of the rear cover shown in Fig. 9. Therefore, in the following description, the rear cover will be described in detail, and the remaining components will be given the same reference numerals as in Fig. 9, and the duplicated description thereof will be omitted or will be described briefly.

[0133] 15, the vibration generating module 400 may be disposed at an incline based on the rear surface of the rear cover 300. For example, the vibration generating module 400 may be disposed at an incline by the second connecting member 800 having one side open. For example, the vibration generating module 400 may be inclined by the height of the second connecting member 800. For example, the second connecting member 800 may have a height that is gradually lower from one side to the other side opposite to the one side. For example, the second connecting member 800 may include a first side parallel to one side, a second side connected to one end or edge of the first side, and a third side connected to the other end or edge of the first side and parallel to the second side, and the heights (or thicknesses) of the second and third sides may be lower as they are closer to the first side.

[0134] For example, in order to improve the sound output at the side of the display module 100, the inclination of the vibration generating module 400 may be different from one side to the other side of the rear cover 300. For example, when the side on which the second connecting member 800 is arranged is one side of the rear cover 300, the inclination of the vibration generating module 400 may be greater from one side of the rear cover 300 to the other side. For example, the inclination of the vibration generating module 400 may be greater from the center of the rear cover 300 to the side (or side wall). As a result, sound from the vibration generating module 400 may be efficiently output from the other side of the second connecting member 800, one side of which is open.

[0135] The rear cover 300 according to another embodiment of the present specification may be disposed excluding the magnetic field region (M) corresponding to the magnet member 403 of the vibration generating module 400. For example, the rear cover 300 may be disposed excluding the magnetic field region (M) corresponding to the magnet member 403 of the first and second sound generating devices 410 and 430. For example, the portion excluding the magnetic field region (M) may be the second hole 420 of the rear cover 300. The rear cover 300 may be made of an electroplated steel sheet, for example, an electrolytically galvanized steel sheet (EGI) or an iron (Fe) series. For example, the electroplated steel sheet may be formed by electroplating zinc (Zn). Therefore, by disposing the rear cover 300 excluding the magnetic field region (M) of the vibration generating module 400, the influence of the magnetic field due to the rear cover 300 on the vibration generating module 400 may be reduced, and the acoustic characteristics of the vibration generating module 400 may be improved. For example, by positioning the rear cover 300 except for the magnetic field region (M) of the vibration generating module 400, the effect of the magnetic field caused by the rear cover 300 on the first and second sound generating devices 410, 430 can be reduced, and the acoustic characteristics of the first and second sound generating devices 410, 430 can be improved.

[0136] For example, the rear cover 300 including at least one second hole 420 and the connecting member 800 having one side or one lateral opening may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410 and 430 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 and the connecting member 800 having one side or one lateral opening, and / or the structure 900 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 and / or the structure 900 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or side direction of the display module 100. For example, the rear cover 300 and / or the structure 900 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in the front or side direction of the display module 100.

[0137] For example, the sound of the vibration generating module 400 can be reflected between the vibration generating module 400 and the rear surface of the rear cover 300 and output in the front direction of the display module 100. For example, the sound of the first and second sound generating devices 410, 430 can be reflected between the first and second sound generating devices 410, 430 and the rear surface of the rear cover 300 and output in the front direction of the display module 100. For example, the sound of the vibration generating module 400 can be reflected between the magnetic field region (M) and output in the front direction of the display module 100. For example, the sound of the vibration generating module 400 can be reflected between the magnetic field region (M) and output in the front direction of the display module 100. For example, the sound of the first and second sound generating devices 410, 430 can be reflected at the side of the structure 900 and output in the front direction of the display module 100. For example, by configuring the connecting member 800 to have an opening on one side or one side, the sound of the vibration generating module 400 can be output in a lateral direction, improving the acoustic characteristics of the high-frequency range. For example, by configuring the connecting member 800 to have an opening on one side or one side, the sound of the vibration generating module 400 can be output in a lateral direction, and the inclined vibration generating module 400 can increase the area where the sound is reflected between the rear cover 300 and the vibration generating module 400, improving the acoustic characteristics of the high-frequency range. Therefore, the area where the sound of the vibration generating module 400 is reflected can be increased by the sound reflected by the rear cover 300, and the sound can be reflected by the side of the structure 900 and output in the front direction of the display module 100, and the sound can be reflected by the magnetic field region (M) and output in the front direction of the display module 100, improving the sound of the high-frequency range. For example, the sound reflected by the rear cover 300 can increase the area in which the sound of the first and second sound generating devices 410 and 430 is reflected, and can be reflected from the side of the structure 900 and output toward the front of the display module 100, or can be reflected from the magnetic field region (M) and output toward the front of the display module 100, thereby further improving the high-frequency sound.

[0138] For example, the path of the sound generated in the vibration generating module 400 may be the tenth sound path (SP10). The path of the sound generated in the first and second sound generating devices 410, 430 may be the tenth sound path (SP10). For example, the tenth sound path (SP10) may be the side direction and the front direction (or the thickness direction of the display module) reflected at the back surface of the display module 100. For example, the tenth sound path (SP10) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the front direction reflected at the side surface of the structure 900. For example, the tenth sound path (SP10) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the side direction and the front direction output through the second connecting member 800. For example, the tenth acoustic path (SP10) may be a lateral direction and a front direction reflecting off the second hole 420 and / or the magnetic field region (M), and may be a front direction reflecting off the structure 900.

[0139] The sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second hole 420. For example, the sound of the first and second sound generating devices 410, 430 may be output in the front direction of the display module 100 through the second hole 420. For example, the path of the sound generated in the vibration generating module 400 through the second hole 420 may be the eleventh sound path (SP11). For example, the path of the sound generated in the first and second sound generating devices 410, 430 through the second hole 420 may be the eleventh sound path (SP11). For example, the eleventh sound path (SP11) may be a front direction (or a thickness direction of the display module) output from the rear surface of the display module 100 through the second hole 420 and / or the magnetic field region (M). For example, the eleventh sound path (SP11) may be a front direction output from a gap space (GS) (or a sound emission space) between the vibration generating module 400 and the rear cover 300. Therefore, since sound can be output from the vibration generating module 400 via the tenth sound path (SP10) and the eleventh sound path (SP11), a display device can be provided that can further improve high-frequency sound.

[0140] 15, the area where the sound of the vibration generating module 400 is reflected can be increased by the inclined vibration generating module 400 structure and / or the second hole 420 arranged in the rear cover 300, and the sound can be output toward the front surface of the display module 100 through the second hole 420, so that a display device in which the sound in the high frequency range can be improved can be provided. For example, the sound of the vibration generating module 400 is reflected by the inclined vibration generating module 400, increasing the sound diffracted in the high frequency range, and the sound can be transmitted toward the front surface of the display module 100, so that a display device in which the sound in the high frequency range can be improved can be provided.

[0141] Figure 16 is a diagram showing a display device according to another embodiment of the present specification. Figure 16 shows a modified structure of the rear cover shown in Figures 9 and 15. Therefore, in the following description, the rear cover will be described in detail, and the remaining components will be given the same reference numerals as in Figures 9 and 15, and redundant description thereof will be omitted or will be described briefly.

[0142] 16, the vibration generating module 400 may be disposed at an incline based on the rear surface of the rear cover 300. For example, the vibration generating module 400 may be disposed at an incline by the second connecting member 800 having one side open. For example, the vibration generating module 400 may be inclined by the height of the second connecting member 800. For example, the second connecting member 800 may have a height that is gradually lower from one side to the other side opposite to the one side. For example, the second connecting member 800 may include a first side parallel to one side, a second side connected to one end or edge of the first side, and a third side connected to the other end or edge of the first side and parallel to the second side, and the heights (or thicknesses) of the second and third sides may be lower as they are closer to the first side.

[0143] For example, in order to improve the sound output at the side of the display module 100, the inclination of the vibration generating module 400 may be different from one side to the other side of the rear cover 300. For example, when the side on which the second connecting member 800 is arranged is one side of the rear cover 300, the inclination of the vibration generating module 400 may be greater from one side of the rear cover 300 to the other side. For example, the inclination of the vibration generating module 400 may be greater from the center of the rear cover 300 to the side (or side wall). As a result, sound from the vibration generating module 400 may be efficiently output from the other side of the second connecting member 800, one side of which is open.

[0144] The rear cover 300 according to another embodiment of the present specification may be disposed in the magnetic field region (M) corresponding to the magnet member 403 of the vibration generating module 400 and on the rear surface of the display module 100. For example, the rear cover 300 may be disposed in the magnetic field region (M) corresponding to the magnet members 403 of the first and second sound generating devices 410 and 430 and on the rear surface of the display module 100. For example, the second hole 420 may be disposed between the rear cover 300 and the portion excluding the magnetic field region (M). For example, the rear cover 300 may be made of a material other than the iron (Fe)-based material contained in the magnet member. For example, the rear cover 300 may be made of any of aluminum (Al) material, magnesium (Mg) alloy material, magnesium lithium (Mg-Li) alloy material, and aluminum (Al) alloy material. Not limited thereto, the rear cover 300 may be made of a material that does not contain iron (Fe). Therefore, the rear cover 300 may be disposed in the magnetic field region (M) and the rear cover 300 including the second hole 420 may be configured. For example, the influence of the magnetic field caused by the rear cover 300 on the first and second sound generating devices 410 and 430 can be reduced, and the acoustic characteristics of the first and second sound generating devices 410 and 430 can be improved.

[0145] For example, the rear cover 300 including at least one second hole 420 and the connecting member 800 having one side or one lateral opening may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410 and 430 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 including at least one second hole 420 and the connecting member 800 having one side or one lateral opening, and / or the structure 900 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or lateral direction of the display module 100. For example, the rear cover 300 and / or the structure 900 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the vibration generating module 400 to be output in the front or side direction of the display module 100. For example, the rear cover 300 and / or the structure 900 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in the front or side direction of the display module 100.

[0146] For example, the sound of the vibration generating module 400 can be reflected between the vibration generating module 400 and the rear surface of the rear cover 300 and output in the front direction of the display module 100. For example, the sound of the first and second sound generating devices 410, 430 can be reflected between the first and second sound generating devices 410, 430 and the rear surface of the rear cover 300 and output in the front direction of the display module 100. For example, the sound of the vibration generating module 400 can be reflected between the rear cover 300 arranged in the magnetic field region (M) and output in the front direction of the display module 100. For example, the sound of the first and second sound generating devices 410, 430 can be reflected between the rear cover 300 arranged in the magnetic field region (M) and output in the front direction of the display module 100. For example, the sound of the vibration generating module 400 can be reflected on the side of the structure 900 and output in the front direction of the display module 100. For example, the sound from the first and second sound generating devices 410, 430 can be reflected by the side of the structure 900 and output toward the front of the display module 100. For example, by configuring the connecting member 800 with an opening on one side or one side, the sound from the vibration generating module 400 can be output toward the side, thereby improving the acoustic characteristics of the high-frequency range. For example, by configuring the connecting member 800 with an opening on one side or one side, the sound from the vibration generating module 400 can be output toward the side, and the inclined vibration generating module 400 can increase the area where the sound is reflected between the rear cover 300 and the vibration generating module 400, thereby improving the acoustic characteristics of the high-frequency range. Therefore, the area over which the sound of the vibration generating module 400 is reflected can be increased by the sound reflected by the rear cover 300, and the sound can be reflected by the side of the structure 900 and output toward the front of the display module 100, and the sound can be reflected by the rear cover 300 in the magnetic field area (M) and output toward the front of the display module 100, thereby further improving the high-frequency sound.For example, the sound reflected by the rear cover 300 can increase the area in which the sound of the first and second sound generating devices 410, 430 is reflected, and can be reflected from the side of the structure 900 and output toward the front of the display module 100, and can be reflected from the rear cover 300 in the magnetic field area (M) and output toward the front of the display module 100, thereby further improving the high-frequency sound.

[0147] For example, the path of the sound generated in the vibration generating module 400 may be the twelfth sound path (SP12). The path of the sound generated in the first and second sound generating devices 410, 430 may be the twelfth sound path (SP12). For example, the twelfth sound path (SP12) may be the side direction and the front direction (or the thickness direction of the display module) reflected at the rear surface of the display module 100. For example, the twelfth sound path (SP12) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the front direction reflected at the side surface of the structure 900. For example, the twelfth sound path (SP12) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the side direction and the front direction outputted through the second connecting member 800. For example, the twelfth acoustic path (SP12) can be a lateral direction and a front direction reflecting off the second hole 420 and / or the magnetic field region (M), and can be a front direction reflecting off the structure 900.

[0148] The sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second hole 420. For example, the sound of the first and second sound generating devices 410, 430 may be output in the front direction of the display module 100 through the second hole 420. For example, the path of the sound generated in the vibration generating module 400 through the second hole 420 may be the thirteenth sound path (SP13). For example, the path of the sound generated in the first and second sound generating devices 410, 430 through the second hole 420 may be the thirteenth sound path (SP13). For example, the thirteenth sound path (SP13) may be in the front direction (or the thickness direction of the display module) output from the rear surface of the display module 100 through the second hole 420 and / or the magnetic field region (M). For example, the thirteenth sound path (SP13) may be in the front direction output from the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300. Therefore, since sound can be output from the vibration generating module 400 via the 12th acoustic path (SP12) and the 13th acoustic path (SP13), a display device can be provided that can further improve high-frequency sound.

[0149] 16, the structure of the tilted vibration generating module 400 and / or the area where the sound of the vibration generating module 400 of the rear cover 300 in the second hole 420 or magnetic field area (M) is reflected can be increased, and the sound reflected in the second hole or pattern 420 or magnetic field area (M) can be output toward the front surface of the display module 100, thereby providing a display device in which the sound in the high frequency range can be improved. For example, the sound of the vibration generating module 400 is reflected by the tilted vibration generating module, increasing the sound diffracted in the high frequency range, and the sound can be transmitted toward the front surface of the display module 100, thereby providing a display device in which the sound in the high frequency range can be improved.

[0150] Fig. 17 is a diagram showing a display device according to another embodiment of the present specification. Fig. 18 is a diagram showing a display device according to another embodiment of the present specification. Figs. 17 and 18 show a modified structure of the rear cover shown in Figs. 9 and 15. Therefore, in the following description, the rear cover will be described in detail, and the remaining components will be given the same reference numerals as Figs. 9 and 15, and duplicated descriptions thereof will be omitted or will be described briefly.

[0151] 17 and 18, the vibration generating module 400 may be disposed at an incline based on the rear surface of the rear cover 300. For example, the vibration generating module 400 may be disposed at an incline by the second connecting member 800 having one side or one lateral side open. For example, the vibration generating module 400 may be inclined by the height of the second connecting member 800. For example, the second connecting member 800 may have a height that is gradually lower from one side to the other side opposite to the one side. For example, the second connecting member 800 may include a first side parallel to one side, a second side connected to one end or edge of the first side, and a third side connected to the other end or edge of the first side and parallel to the second side, and the heights (or thicknesses) of the second and third sides may be lower as they are closer to the first side.

[0152] For example, in order to improve the sound output at the side of the display module 100, the inclination of the vibration generating module 400 may be different from one side to the other side of the rear cover 300. For example, when the side on which the second connecting member 800 is arranged is one side of the rear cover 300, the inclination of the vibration generating module 400 may be greater from one side of the rear cover 300 to the other side. For example, the inclination of the vibration generating module 400 may be greater from the center of the rear cover 300 to the side (or side wall). As a result, sound from the vibration generating module 400 may be efficiently output from the other side of the second connecting member 800, one side of which is open.

[0153] The rear cover 300 according to another embodiment of the present specification may be disposed excluding the magnetic field region (M) corresponding to the magnet member 403 of the vibration generating module 400. For example, the rear cover 300 may be disposed excluding the magnetic field region (M) corresponding to the magnet member 403 of the first and second sound generating devices 410 and 430. For example, the portion excluding the magnetic field region (M) may be the second hole 420 of the rear cover 300. The rear cover 300 may be made of an electroplated steel sheet, for example, an electrolytically galvanized steel sheet (EGI) or an iron (Fe) series. For example, the electroplated steel sheet may be formed by electroplating zinc (Zn). Therefore, by disposing the rear cover 300 excluding the magnetic field region (M), it is possible to reduce the influence of the magnetic field caused by the rear cover 300 on the vibration generating module 400, and improve the acoustic characteristics of the vibration generating module 400.

[0154] According to another embodiment of the present specification, the second rear cover 320 may be included, which is disposed on the rear side of the rear cover 300. For example, the second rear cover 320 may be disposed between the rear cover 300 and the vibration generating module 400. For example, the second rear cover 320 may be disposed between the rear cover 300 and the first and second sound generating devices 410, 430. For example, the second rear cover 320 may overlap a part of the rear cover 300. For example, the second rear cover 320 may be disposed in a magnetic field region (M) corresponding to the magnet member 403 of the vibration generating module 400. For example, the second rear cover 320 may be disposed in a magnetic field region (M) corresponding to the magnet member 403 of the first and second sound generating devices 410, 430.

[0155] For example, the second rear cover 320 may be made of a non-ferrous metal so as to reduce the effect of the magnetic field caused by the rear cover 300 on the vibration generating module 400. For example, the second rear cover 320 may be made of a non-ferrous metal so as to reduce the effect of the magnetic field caused by the rear cover 300 on the first and second sound generating devices 410 and 430. For example, the second rear cover 320 may be made of a material other than the iron (Fe) series contained in the magnet member 403. For example, the second rear cover 320 may be made of any of aluminum (Al) material, magnesium (Mg) alloy material, magnesium lithium (Li) alloy material, and aluminum (Al) alloy material. Not limited thereto, the second rear cover 320 may be made of a material that does not contain iron (Fe). Therefore, the effect of the magnetic field caused by the rear cover 300 on the vibration generating module 400 may be reduced, and the acoustic loss of the vibration generating module 400 may be reduced, thereby improving the acoustic characteristics. For example, the influence of the magnetic field caused by the rear cover 300 on the first and second sound generating devices 410 and 430 can be reduced, and the acoustic characteristics of the first and second sound generating devices 410 and 430 can be improved.

[0156] For example, the rear cover 320 may include at least one second hole 420. For example, the rear cover 320 may include at least one second hole 420 overlapping with the second rear cover 320. The at least one second hole 420 may overlap with the rear cover 300 and the second rear cover 320.

[0157] A third connection member 820 may be included between the rear cover 300 and the second rear cover 320. The third connection member 820 may be an adhesive. For example, the adhesive 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 PSA (Pressure Sensitive Adhesive).

[0158] 17, the second rear cover 320 and the rear cover 300 may be disposed on the same plane. For example, the height and / or shape of the second rear cover 320 disposed around the second hole 420 may be adjusted to further improve the sound reflected by the vibration generating module 400. For example, the height and / or shape of the second rear cover 320 disposed around the second hole 420 may be adjusted to further improve the sound reflected by the first and second sound generating devices 410 and 430.

[0159] Referring to FIG. 18, the second rear cover 320 may be disposed between the second holes 420 of the rear cover 300. For example, the second rear cover 320 may be disposed between the rear cover 300 and the vibration generating module 400. For example, the second rear cover 320 may be disposed between the rear cover 300 and the first and second sound generating devices 410 and 430. For example, the second rear cover 320 and / or the second holes 420 may be formed in a forming shape, which has the effect of simplifying the process. The second holes 420 may be formed by forming slits in the second rear cover 320. For example, the second rear cover 320 and the second holes 420 may be formed in a forming shape, which may further increase the area in which the sound of the vibration generating module 400 is reflected. For example, in order to further increase the sound reflected by the vibration generating module 400, the height and / or shape of the second rear cover 320 disposed around the second holes 420 may be adjusted.

[0160] For example, the rear cover 300 and / or the second rear cover 320 including the connecting member 800 with one side or one lateral opening and at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in the front or side direction of the display module 100. For example, the rear cover 300 and / or the second rear cover 320 including at least one second hole 420 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in the front or side direction of the display module 100. For example, the rear cover 300 and / or the second rear cover 320 including at least one second hole 420 and the structure 900 may be an acoustic guide structure that guides the sound of the first and second sound generating devices 410, 430 to be output in the front or side direction of the display module 100. For example, the rear cover 300, the second rear cover 320, and / or the structure 900 including at least one second hole 420 may be an acoustic guide structure that guides the sound from the first and second sound-generating devices 410 and 430 to be output in a front or side direction of the display module 100. For example, the connecting member 800 having one side or one lateral side open, the rear cover 300, the second rear cover 320, and / or the structure 900 including at least one second hole 420 may be an acoustic guide structure that guides the sound from the first and second sound-generating devices 410 and 430 to be output in a front or side direction of the display module 100.

[0161] For example, the sound of the vibration generating module 400 can be reflected between the vibration generating module 400 and the rear surface of the rear cover 300 and output in the front direction of the display module 100. For example, the sound of the first and second sound generating devices 410, 430 can be reflected between the first and second sound generating devices 410, 430 and the rear surface of the rear cover 300 and output in the front direction of the display module 100. For example, the sound of the vibration generating module 400 can be reflected between the rear cover 300 arranged in the magnetic field region (M) and output in the front direction of the display module 100. For example, the sound of the first and second sound generating devices 410, 430 can be reflected between the rear cover 300 arranged in the magnetic field region (M) and output in the front direction of the display module 100. For example, the sound of the vibration generating module 400 can be reflected at the side of the structure 900 and output in the front direction of the display module 100. For example, the sound from the first and second sound generating devices 410, 430 can be reflected by the side of the structure 900 and output toward the front of the display module 100. For example, by configuring the connecting member 800 with an opening on one side or one side, the sound from the vibration generating module 400 can be output toward the side, thereby improving the acoustic characteristics of the high-frequency range. For example, by configuring the connecting member 800 with an opening on one side or one side, the sound from the vibration generating module 400 can be output toward the side, and the inclined vibration generating module 400 can increase the area where the sound is reflected between the rear cover 300 and the vibration generating module 400, thereby improving the acoustic characteristics of the high-frequency range. Therefore, the area over which the sound of the vibration generating module 400 is reflected can be increased by the sound reflected by the rear cover 300, and the sound can be reflected by the side of the structure 900 and output toward the front of the display module 100, and the sound can be reflected by the rear cover 300 in the magnetic field area (M) and output toward the front of the display module 100, thereby further improving the high-frequency sound.For example, the sound reflected by the rear cover 300 can increase the area in which the sound of the first and second sound generating devices 410, 430 is reflected, and can be reflected from the side of the structure 900 and output toward the front of the display module 100, and can be reflected from the rear cover 300 in the magnetic field area (M) and output toward the front of the display module 100, thereby further improving the high-frequency sound.

[0162] Referring to FIG. 17, the path of the sound generated in the vibration generating module 400 may be the fourteenth sound path (SP14). The path of the sound generated in the first and second sound generating devices 410, 430 may be the fourteenth sound path (SP14). For example, the fourteenth sound path (SP14) may be the side direction and the front direction (or the thickness direction of the display module) reflected at the rear surface of the display module 100. For example, the fourteenth sound path (SP14) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the front direction reflected at the side surface of the structure 900. For example, the fourteenth sound path (SP14) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the side direction and the front direction output through the second connecting member 800. For example, the fourteenth acoustic path (SP14) may be a lateral direction and a front direction reflecting off the second hole 420 and / or the magnetic field region (M), and may be a front direction reflecting off the structure 900.

[0163] Referring to FIG. 17, the sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second hole 420. For example, the sound of the first and second sound generating devices 410 and 430 may be output in the front direction of the display module 100 through the second hole 420. For example, the path of the sound generated in the vibration generating module 400 through the second hole 420 may be the 15th sound path (SP15). For example, the path of the sound generated in the first and second sound generating devices 410 and 430 through the second hole 420 may be the 15th sound path (SP15). For example, the 15th sound path (SP15) may be in the front direction (or the thickness direction of the display module) output from the rear surface of the display module 100 through the second hole 420 and / or the magnetic field region (M). For example, the 15th sound path (SP15) may be in the front direction output from the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300. Therefore, since sound can be output from the vibration generating module 400 via the fourteenth sound path (SP14) and the fifteenth sound path (SP15), a display device can be provided that can further improve high-frequency sound.

[0164] Referring to FIG. 18, the path of the sound generated in the vibration generating module 400 may be the 16th sound path (SP16). The path of the sound generated in the first and second sound generating devices 410, 430 may be the 16th sound path (SP16). For example, the 16th sound path (SP16) may be the side direction and the front direction (or the thickness direction of the display module) reflected at the rear surface of the display module 100. For example, the 16th sound path (SP16) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the front direction reflected at the side surface of the structure 900. For example, the 16th sound path (SP16) may be the side direction and the front direction reflected at the gap space (GS) (or the sound emission space) between the vibration generating module 400 and the rear cover 300, and may be the side direction and the front direction output through the second connecting member 800. For example, the sixteenth acoustic path (SP16) may be a lateral direction and a front direction reflecting off the second hole 420 and / or the magnetic field region (M), and may be a front direction reflecting off the structure 900.

[0165] Referring to FIG. 18, the sound of the vibration generating module 400 may be output in the front direction of the display module 100 through the second hole 420. For example, the sound of the first and second sound generating devices 410 and 430 may be output in the front direction of the display module 100 through the second hole 420. For example, the path of the sound generated in the vibration generating module 400 through the second hole 420 may be the 17th sound path (SP17). For example, the path of the sound generated in the first and second sound generating devices 410 and 430 through the second hole 420 may be the 17th sound path (SP17). For example, the 17th sound path (SP17) may be in the front direction (or the thickness direction of the display module) output from the rear surface of the display module 100 through the second hole 420 and / or the magnetic field region (M). For example, the 17th sound path (SP17) may be in the front direction output from the gap space (GS) (or sound emission space) between the vibration generating module 400 and the rear cover 300. Therefore, since sound can be output from the vibration generating module 400 via the 17th sound path (SP17) and the 17th sound path (SP17), a display device can be provided that can further improve sound in the high-frequency range.

[0166] 17 and 18, the structure of the tilted vibration generating module 400 and / or the area where the sound of the vibration generating module 400 is reflected in the rear cover 300 and / or the second rear cover 320 can be increased, and the sound reflected in the second hole or pattern 420 or the magnetic field area (M) can be output toward the front of the display module 100, thereby providing a display device capable of improving the sound in the high frequency range. For example, the sound of the vibration generating module 400 is reflected by the tilted vibration generating module, increasing the diffraction in the high frequency range, and the sound can be transmitted toward the front of the display module 100, thereby providing a display device capable of improving the sound in the high frequency range.

[0167] Figure 19 is a diagram showing a display device according to another embodiment of the present specification. Figure 20 is a cross-sectional view taken along line II-II' in Figure 19. Therefore, in the following description, only the rear cover, the backlight, and the related configurations will be described in detail, and the remaining configurations will be given the same reference numerals as in Figures 1 to 18, and redundant description thereof will be omitted or will be described briefly.

[0168] 19 and 20, in a display device according to another embodiment of the present specification, the rear cover 300 can support the backlight 130 of the display module 100 such that an internal air gap 132 is provided inside the backlight 130.

[0169] The rear cover 300 according to one example may include a rear portion 310 that supports the rear of the display module 100 , and a side portion 330 that is disposed at an end or edge area (EA) of the rear portion 310 and supports the panel guide 200 .

[0170] The rear part 310 is disposed to cover the rear surface of the display module 100 and can support the display module 100. The rear part 310 can support the backlight 130 of the display module 100 and can support the vibration generating module 400.

[0171] The rear part 310 may include a cross-sectional structure having a concave curved surface shape so that an internal air gap 132 may be provided inside the backlight 130. The internal air gap 132 of the backlight 130 may improve the acoustic characteristics of the low frequency range by acting as a sound body for the sound generated and propagated by the vibration of the vibration generating module 400. The rear part 310 is substantially the same as the above-described rear part except for including a cross-sectional structure having a concave curved surface shape, and therefore, a duplicated description of the remaining structure except for the cross-sectional structure having a concave curved surface shape will be omitted.

[0172] According to an example, the rear part 310 may have a cup structure in which a middle area (MA) of the display module 100 protrudes toward a rear surface of the display device in the first direction (X) (or horizontal direction) of the display module 100. For example, the distance (or gap) between an upper surface of the rear part 310 and a rear surface of the display panel 110 may gradually increase from the end or edge areas (EA1, EA2) to the middle area (MA) in the first direction (X) (or horizontal direction) of the display module 100.

[0173] In the rear part 310 according to an example, based on the first direction (X) (or horizontal direction) of the display module 100, the distance (or depth) between a virtual plane (or horizontal line) connecting one end or edge of the rear part 310 and the other end or edge of the rear part 310 and the middle area (MA) of the rear part 310 may be 0.01% to 0.5% of the entire length of the rear part 310. For example, when the depth of the middle area (MA) of the rear part 310 is 0% of the entire length of the rear part 310, the rear part 310 may have a substantially planar structure. In this case, it is not possible to provide an internal air gap 132 inside the backlight 130. In addition, if the depth of the intermediate area (MA) of the rear part 310 exceeds 0.5% of the entire length of the rear part 310, the distance (or size) of the internal air gap 132 provided inside the backlight 130 increases, and therefore, due to an increase in the transmission loss of the high-frequency range sound waves proportional to the distance, the sound of the mid-high frequency range may not be realized or the sound pressure of the mid-high frequency range may decrease, and a phenomenon of acoustic separation may occur between the sound of the mid-high frequency range generated by the first sound generating device 410 and the sound of the deep low frequency range generated by the second sound generating device 430, and the thickness of the display device may increase. Therefore, the depth of the intermediate area (MA) of the rear part 310 may be set to 0.01% to 0.5% of the entire length of the rear part 310 so that the internal air gap 132 of the backlight 130 can act as a sound box for improving the acoustic characteristics of the low frequency range. The mid frequency range may be 200Hz to 3kHz, but is not necessarily limited thereto, and may be 3kHz to 5kHz. The treble band may be 3 kHz or higher, but is not necessarily limited to this, and may be 5 kHz or higher.

[0174] The side portion 330 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 backlight storage space on the rear portion 310 and surround the sides of the backlight 130 stored (or supported) in the backlight storage space.

[0175] The backlight 130 may include a reflective sheet 133 , a light guide plate 131 , a light source unit, and an optical sheet unit 135 .

[0176] The reflective sheet 133 may be disposed on the rear part 310 of the rear cover 300. The reflective sheet 133 may be disposed on the rear part 310 to have a concave shape along the concave shape of the rear part 310. For example, the reflective sheet 133 may be curved into a concave shape due to its own weight, and thus may be seated on the rear part 310 to have a conformal shape that follows the shape of the rear part 310 as it is. The reflective sheet 133 may reflect light incident from the light guide plate 131 toward the light guide plate 131, thereby minimizing or reducing light loss.

[0177] The light guide plate 131 is disposed on the reflective sheet 133 so as to overlap the display panel 110, and may include a light incident surface provided on at least one side wall. The light guide plate 131 may include a light-transmitting plastic or glass material. The light guide plate 131 guides light incident from the light source through the light incident surface toward (or out of) the display panel 110.

[0178] The light guide plate 131 according to the embodiment of the present specification may be disposed on the reflective sheet 133 to have a concave shape that does not exactly match the concave shape of the rear part 310. For example, the light guide plate 131 may be seated or disposed on the reflective sheet 133 to have a non-conformal shape that does not exactly match the shape of the reflective sheet 133 (or the rear part 310). As a result, the backlight 130 may include an internal air gap 132 between the reflective sheet 133 and the light guide plate 131. The internal air gap 132 may be provided between the reflective sheet 133 and the light guide plate 131 overlapping the middle area (MA) of the display module 100. The ends or edges of the reflective sheet 133 and the light guide plate 131 overlapping the end area or edge area (EA) of the display module 100 contact each other, and therefore, the internal air gap 132 is not provided between the reflective sheet 133 and the end or edge of the light guide plate 131. The internal air gap 132 is provided between the reflective sheet 133 overlapping the intermediate area (MA) of the display module 100 and the light guide plate 131, and acts as a sound body for the sound generated and propagated by the vibration of the vibration generating module 400, thereby improving the acoustic characteristics in the low-frequency range.

[0179] The light guide plate 131 may be bent into a concave shape due to its own weight and seated on the reflective sheet 133. For example, if the stiffness of the light guide plate 131 is relatively low, the light guide plate 131 may be bent into a shape that follows the concave shape of the reflective sheet 133 (or the rear part 310) and seated or disposed on the reflective sheet 133, so that no internal air gap 132 is provided between the reflective sheet 133 and the light guide plate 131. Conversely, if the stiffness of the light guide plate 131 is relatively high, the light guide plate 131 may be seated or disposed on the reflective sheet 133 in a flat state without being bent due to its own weight, so that the internal air gap 132 may be formed between the light guide plate 131 and the remaining part of the reflective sheet 133 excluding both ends or both edges. In this case, the distance (or size) of the internal air gap 132 increases, so that the air gap 132 is not proportional to the distance. Due to an increase in the transmission loss of high-frequency sound waves, sound in the mid-high frequency range may not be realized or the sound pressure in the mid-high frequency range may decrease, and an acoustic separation phenomenon may occur between the sound in the mid-high frequency range generated by the first sound generating device 410 and the sound in the deep low frequency range generated by the second sound generating device 430. Therefore, the light guide plate 131 may be made of a rigid material that can be seated on the reflective sheet 133 that is concavely curved in a non-conformal shape that does not directly follow the concave shape of the reflective sheet 133 (or the rear part 310) in order to provide an internal air gap 132 between the reflective sheet 133 overlapping the middle area (MA) of the display module 100 and the light guide plate 131.

[0180] The light source unit irradiates light onto a light incident surface provided on the light guide plate 131. The light source unit may be disposed on the rear cover 300 so as to overlap an end region or an edge area (EA) of the display panel 110. The light source unit according to an example may include a plurality of light emitting diode elements mounted on a light source printed circuit board to irradiate light onto the light incident surface of the light guide plate 131.

[0181] The optical sheet unit 135 may be disposed on the front surface of the light guide plate 131 to improve the brightness characteristics of the light emitted from the light guide plate 131. The optical sheet unit 135 may be disposed on the light guide plate 131 to have a conformal shape that directly follows the concave shape of the light guide plate 131.

[0182] Therefore, the display device according to the embodiment of the present specification can have the same effects as the display device shown in Figures 1 to 18. In addition, the display device according to the embodiment of the present specification can further improve the acoustic characteristics of the low frequency range by using the rear part 310 of the rear cover 300 having a concave cross-sectional structure and the internal air gap 132 provided between the light guide plate 131 and the reflective sheet 133 of the backlight 130 as a sound body.

[0183] FIG. 21 is a graph showing the acoustic output characteristics of a display device according to an embodiment of the present specification. In FIG. 21, the thin solid line shows the frequency-sound pressure characteristics of the display device of FIG. 6 having a connecting member with one side not open (or a display device of a comparative example). The thick solid line shows the frequency-sound pressure characteristics of the display device of FIG. 8. The dotted line shows the frequency-sound pressure characteristics of the display device of FIG. 17. In FIG. 21, the horizontal axis shows frequency (Hz) and the vertical axis shows sound pressure (dB). The sound pressure level in FIG. 21 was measured at a location 0.5 m away from the display panel using an APX525 Audio Analyzer (FFT Analyzer) made by Audio Precision, with an applied voltage of 3 Vrms and a sine sweep of 20 Hz to 20 kHz. The sine sweep may be a method of sweeping in a short time, and is not limited to this method.

[0184] 21, it can be seen that the display devices of FIGS. 8 and 17 have improved sound pressure below 200 Hz in the bass range compared to the display device of the comparative example. For example, it can be seen that the display devices of FIGS. 8 and 17 have improved sound pressure below 200 Hz by about 10 dB compared to the display device of the comparative example. Therefore, it can be seen that the display devices of FIGS. 8 and 17 have improved sound pressure in the bass range compared to the display device of the comparative example. For example, it can be seen that the sound pressure in the bass range is improved by forming the rear cover from a non-ferrous metal.

[0185] It can be seen that the sound pressure in the mid-range band of 200 Hz to 3 kHz or less is improved by about 5 dB to about 8 dB or more in the display devices of Figs. 8 and 17 compared to the display device of the comparative example. It can be seen that the sound pressure in the treble band of 3 kHz or more is improved by about 5 dB to about 7 dB or more in the display devices of Figs. 8 and 17 compared to the display device of the comparative example. Therefore, it can be seen that the display device according to the embodiment of this specification improves the sound in the treble band. For example, it is possible to provide a display device including a vibration generating module that can output the sound in the treble band without configuring a piezoelectric vibration device with a strong output in the treble band. Therefore, it is possible to provide a display device including a vibration generating module that can improve the sound in the low to treble bands.

[0186] The display device according to the embodiment of the present specification may be applied to various applications that output sound by vibration of a display module without a separate speaker. The display device according to the embodiment of the present specification may be applied to a mobile device, a video phone, a smart watch, a watch phone, a wearable apparatus, a foldable apparatus, a rollable apparatus, a bendable apparatus, a flexible apparatus, a curved apparatus, 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 car navigation system, a display device for a vehicle, a display device for a theater, 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. Furthermore, when the display device of this specification is applied to a mobile device or the like, it may be, but is not limited to, a speaker or a receiver.

[0187] A display device according to an embodiment of the present specification can be described as follows.

[0188] A display device according to an embodiment of the present specification includes a display module including a display panel for displaying images, a rear cover arranged on the rear of the display module, and a vibration generating module arranged in a rear area of ​​the rear cover, and sound output from the vibration generating module can be output in the front and rear directions of the display module.

[0189] According to some examples herein, the vibration generating module may be disposed on an edge of the rear surface of the rear cover and spaced apart from the rear surface of the rear cover.

[0190] According to some examples of the present specification, the display device further includes at least one hole connected to a space between a rear edge of the rear cover and the vibration generating module, and sound output from the vibration generating module through the at least one hole can be output in the front and side directions of the display module.

[0191] According to some examples of the present specification, the display device may further include a connecting member disposed between the vibration generating module and the rear cover and having an open side, and sound from the vibration generating module may be output in a lateral direction of the display module through one side of the connecting member.

[0192] According to some examples herein, the vibration generating module can be positioned at an angle relative to the rear surface of the rear cover.

[0193] According to some examples herein, the rear cover may further include at least one hole overlapping with the vibration generating module.

[0194] According to some examples herein, the rear cover may further include a plurality of holes overlapping with the vibration generating module, and the plurality of holes may differ toward the center of the rear cover.

[0195] According to some examples herein, the rear cover may be positioned at an angle relative to the vibration generating module.

[0196] According to some examples herein, the display device may further include a second rear cover disposed between the rear cover and the vibration generating module, and a hole overlapping the rear cover and the second rear cover.

[0197] According to some examples herein, the second rear cover may further include at least one hole.

[0198] According to some examples herein, the back cover and the second back cover can be constructed of different materials.

[0199] According to some examples herein, the second back cover can be made of a non-ferrous metal.

[0200] According to some examples of the present specification, the display device may further include a structure arranged on one side of the display module, and the sound from the vibration generating module may be reflected by the structure and output toward the front of the display module.

[0201] According to some examples herein, the structure may include a bottom disposed on the rear surface of the rear cover, a side spaced apart from one side of the display module and connected to the bottom, and an acoustic guide between the bottom and the side.

[0202] According to some examples herein, the rear cover may include a rear portion disposed on the rear side of the display module and a side portion supporting the display module, and the rear portion may include a cross-sectional structure having a concave shape.

[0203] A display device according to an embodiment of the present specification includes a display module including a display panel for displaying images, a rear cover arranged on the rear side of the display module, and a vibration generating module arranged in a rear area of ​​the rear cover and outputting sound to the display module, and the rear cover and the vibration generating module may be arranged non-parallel.

[0204] According to some examples herein, the vibration generating module may be positioned non-parallel to the rear surface of the rear cover and / or the rear cover may be positioned non-parallel to the vibration generating module.

[0205] According to some examples of the present specification, the display device may further include a connecting member disposed between the vibration generating module and the rear cover and having an open side, and sound from the vibration generating module may be output in a lateral direction of the display module through one side of the connecting member.

[0206] According to some examples herein, the back cover may further include one or more holes that overlap with the vibration generating module.

[0207] According to some examples herein, the rear cover may further include a plurality of holes, and the plurality of holes may differ from one side of the rear cover to the other side.

[0208] According to some examples herein, the rear cover may further include a plurality of patterns, and the plurality of patterns may differ from one side of the rear cover to the other side.

[0209] According to some examples herein, the display device may further include a second rear cover disposed between the rear cover and the vibration generating module, and a hole overlapping the rear cover and the second rear cover.

[0210] According to some examples herein, the second rear cover may be disposed in a portion of the vibration generating module excluding the magnetic field region.

[0211] According to some examples in this specification, the second rear cover can be disposed so as to overlap a portion of the vibration generating module excluding the magnetic field region and a portion of the rear cover.

[0212] According to some examples herein, the second back cover can be made of a non-ferrous metal.

[0213] According to some examples of the present specification, the display device may further include a structure arranged on one side of the display module, and the sound from the vibration generating module may be reflected by the structure and output toward the front of the display module.

[0214] According to some examples herein, the structure may include a bottom disposed on the rear surface of the rear cover, a side spaced apart from one side of the display module and connected to the bottom, and an acoustic guide between the bottom and the side.

[0215] According to some examples herein, the rear cover may include a rear portion disposed on the rear side of the display module and a side portion supporting the display module, and the rear portion may include a cross-sectional structure having a concave shape.

[0216] According to some examples herein, the rear cover can include a first rear region and a second rear region, and the vibration generating module can include a first sound generating device disposed in the first rear region and a second sound generating device disposed in the second rear region.

[0217] According to some examples herein, the distance between the middle region of the rear portion and an imaginary plane connecting one edge and the other edge of the rear portion may be set to 0.01% to 0.5% of the entire length of the rear portion.

[0218] The display device according to the embodiments of the present disclosure may further include a reflective sheet disposed on the rear portion to have a concave shape along the concave shape of the rear portion.

[0219] The display device according to the embodiments of the present disclosure may further include a light guide plate disposed on the reflective sheet, and an internal air gap between the reflective sheet and the light guide plate.

[0220] The features, structures, effects, etc. described in the above-mentioned embodiments of the present specification are included in at least one embodiment of the present specification, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. exemplified in at least one embodiment of the present specification can be combined or modified in different embodiments by a person having ordinary skill in the art to which the present specification belongs. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present specification.

[0221] The present specification described above is not limited to the above-mentioned embodiments and the attached drawings, and it will be apparent to those skilled in the art to which the present specification pertains that multiple substitutions, modifications and changes are possible within the scope of the technical matters of the present specification. Therefore, the scope of the present specification is indicated by the claims set forth below, and all modifications or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present specification. [Explanation of symbols]

[0222] 100: Display module 110: Display panel 130: Backlight 200: Panel Guide 300: Rear cover 310: Back part 409: 1st Hall 400: Vibration generation module 410, 430: Sound generating device 420: 2nd hole 600: System back cover 800: Second connecting member

Claims

1. a display module including a display panel and configured to display images; a back cover on the back of the display module; and a vibration generating device at an edge or border region of the rear surface of the rear cover; The vibration generator is disposed at an angle such that a distance between the vibration generator and the rear surface of the rear cover becomes wider toward an end of the rear surface of the rear cover, A display device, wherein the vibration generating device is configured to output sound in a front direction and a side direction of the display module.

2. The vibration generating device is disposed in the end region or edge region of the rear surface of the rear cover and is spaced apart from the rear surface of the rear cover; The display device according to claim 1 , wherein the vibration generating device outputs sound in the front direction and the side direction of the display module.

3. At least one hole is connected to a space between the end region or edge region of the rear surface of the rear cover and the vibration generating device, The display device according to claim 2 , wherein the sound output from the vibration generating device is output in the front direction and the side direction of the display module through the at least one hole and the space.

4. a connecting member between the vibration generating device and the rear cover, the connecting member having an opening that is partially open; The display device according to claim 1 , wherein the sound output from the vibration generating device is output in a lateral direction of the display module through the opening of the connecting member.

5. The display device according to claim 1 , further comprising a connecting member between the vibration generating device and the rear cover.

6. The connecting member is configured to provide a space between the vibration generating device and the rear surface of the rear cover, The display device according to claim 5 , wherein the sound output from the vibration generating device is transmitted to the rear surface of the display module through the space, and is output in the front and side directions of the display module through the space.

7. The display device according to claim 1 , wherein the rear cover includes one or more holes overlapping the vibration generating device.

8. the rear cover includes a plurality of holes overlapping the vibration generating device, The display device of claim 1 , wherein the holes have heights that gradually decrease from a center of the rear surface of the rear cover to an end region or border region of the rear surface of the rear cover.

9. Further comprising a second rear cover between the rear cover and the vibration generating device; The display device according to claim 1 , wherein the rear cover includes a hole overlapping the second rear cover and the vibration generating device.

10. The display device of claim 9 , wherein the second rear cover comprises at least one hole.

11. The vibration generating device includes a magnet member, The display device according to claim 9 , wherein the hole in the rear cover overlaps with the magnet member.

12. The vibration generating device includes a magnet member, The display device according to claim 9 , wherein the second rear cover is disposed so as to overlap a portion of the rear cover and the magnet member.

13. the rear cover and the second rear cover are made of different materials; or The display device of claim 9 , wherein the second back cover is constructed of a non-ferrous metal.

14. The display device further includes an acoustic reflection structure disposed on one side of the display module, The display device according to any one of claims 1 to 13, wherein the sound output from the vibration generating device is reflected by the acoustic reflecting structure and output in the direction of the front surface of the display module.

15. The acoustic reflection structure is a bottom portion on the rear surface of the rear cover; a side portion spaced apart from the one side of the display module and connected to the bottom portion; and The display device according to claim 14, further comprising an acoustic guide realized in a curved or rounded shape at a corner between the bottom and the side.

16. the end or border region of the back surface of the back cover includes a first back region and a second back region; The display device according to any one of claims 1 to 13, wherein the vibration generating device comprises a first sound generating device in the first rear region and a second sound generating device in the second rear region.

17. The rear cover is a back surface on the back surface of the display module; and A display device according to any preceding claim, comprising a side portion configured to support the display module.

18. 18. The display device according to claim 17, wherein a distance between an imaginary plane connecting one end and the other end of the rear portion and a middle region of the rear portion is 0.01% to 0.5% of an entire length of the rear portion.

19. The display device according to claim 17 , wherein the rear surface has a cross-sectional structure in the form of a concave curved surface.

20. 20. The display device of claim 19, wherein the display module includes an internal air gap provided by the concavely curved cross-sectional structure of the rear portion.

21. 21. The display device of claim 20, further comprising a reflective sheet overlying the rear portion to have a concave surface conforming to the concave curved surface of the rear portion.

22. Further comprising a light guide portion on the reflective sheet; 22. The display device of claim 21, wherein the internal air gap is between the reflective sheet and the light guide.

23. a backlight behind the display panel; and The display device according to any one of claims 1 to 13, further comprising a sound transmission space between the display panel and the backlight.

24. The backlight is configured to generate sound in the sound transmission space by being vibrated by the vibration of the vibration generating device, The display device according to claim 23, wherein the display panel is configured to be vibrated by vibrations transmitted through the sound transmission space due to vibrations of the backlight caused by vibrations of the vibration generating device, thereby outputting the sound in the front direction of the display panel.

25. a support configured to support an edge or border region of a rear surface of the display panel; a backlight on the rear side of the display panel; and The display device further includes a sound transmission space between the display panel and the backlight, the sound transmission space being defined by the support portion. the support is configured between the edge or border region of the rear surface of the display panel and a border region of the front surface of the backlight; The display device according to any one of claims 1 to 13, wherein the rear cover is configured to support the support portion.

Images