Sound production device integrated on display and display

Abstract

The utility model relates to a sound production device integrated on a display. The sound production device comprises at least one first piezoelectric vibration module and at least one second piezoelectric vibration module, the display may be a liquid crystal display or a semiconductor light emitting diode display. The first piezoelectric vibration module is arranged on the first side of the back face of a reflecting plate of a liquid crystal display panel of the displayer or arranged on the first side of the back face of a semiconductor light-emitting diode display panel of the displayer. The second piezoelectric vibration module is arranged on the second side of the back face of the reflecting plate of the liquid crystal display panel of the displayer or arranged on the second side of the back face of the semiconductor light-emitting diode display panel of the displayer. The first piezoelectric vibration module and the second piezoelectric vibration module vibrate through electric control, so that the liquid crystal display panel or the semiconductor light-emitting diode display panel can vibrate along with the first piezoelectric vibration module and the second piezoelectric vibration module, and sounds of left and right sound channels are generated.

Description

Technical Field

[0001] The utility model relates to a technology of a sound-generating device, and in particular to a sound-generating device and a display which use a piezoelectric vibration module and can be integrated with a display. Background Art

[0002] Sound-generating devices are widely seen in daily life. For example, computers, tablets, mobile phones or laptops are equipped with sound-generating devices. Sound-generating devices can emit corresponding sounds through the control of electrical signals. Existing sound-generating devices are, for example, large speakers, thin speakers formed by planar film vibrators or other types of speakers. As displays are becoming thinner and thinner, if the sound-generating device cannot be integrated into the display in a thin and light manner, the thickness and weight of the display will become thicker and heavier due to the sound-generating device.

[0003] In one of the prior art methods, a coil vibrator is disposed behind the liquid crystal display panel or semiconductor light emitting diode display panel of the display to generate corresponding sounds through the coil vibrator. However, since the coil vibrator is thick and heavy, the thickness and weight of the display will be increased. In another prior art method, a film is attached to the back of the liquid crystal display panel or semiconductor light emitting diode display panel of the display, and multiple piezoelectric vibration components are attached to the film to generate corresponding sounds through the vibration of the film. However, this method requires additional film attachment and requires specific arrangement of multiple piezoelectric vibration components, and even has the technical problem of poor treble response. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a sound device integrated with a display and a display.

[0005] The technical solution of the utility model is as follows: Based on the first aspect of the utility model, a sound-generating device integrated in a display is provided, which includes at least one first piezoelectric vibration module and at least one second piezoelectric vibration module. The first piezoelectric vibration module is arranged on the first side of the back side of the reflective plate of the liquid crystal display panel of the display, or is arranged on the first side of the back side of the semiconductor light-emitting diode display panel of the display, wherein the display is a liquid crystal display or a semiconductor light-emitting diode display. The second piezoelectric vibration module is arranged on the second side of the back side of the reflective plate of the liquid crystal display panel of the display relative to the first side, or is arranged on the second side of the back side of the semiconductor light-emitting diode display panel of the display relative to the second side.

[0006] Optionally, the sound-generating device further includes a sound channel isolation module, which is arranged on the back side of a reflective plate of a liquid crystal display panel of the display, or on the back side of a semiconductor light-emitting diode display panel of the display, and is arranged between the first piezoelectric vibration module and the second piezoelectric vibration module.

[0007] Optionally, the sound channel isolation module includes a rigid body and a sound wave absorbing packaging material, the rigid body is attached to the back side of a reflective plate of a liquid crystal display panel of the display or the back side of a semiconductor light emitting diode display panel of the display, the sound wave absorbing packaging material covers at least a portion of the rigid body and is attached to the back side of the reflective plate of the liquid crystal display panel of the display or the back side of a semiconductor light emitting diode display panel of the display.

[0008] Optionally, the rigidity of the rigid body is greater than the rigidity of the substrate of the reflective plate or the semiconductor light-emitting diode display panel, the rigid body is copper wire or copper sheet, or is composed of metal alloy, carbon fiber, fiber-reinforced plastic or ceramic material, but not limited to this, and the sound wave absorbing packaging material is foam, or is composed of polyurethane foam plastic, polyethylene, ethylene-vinyl acetate copolymer, thermoplastic rubber or polyvinyl chloride material, but not limited to this.

[0009] Optionally, the display is a flat display or a curved display, and correspondingly, each of the first piezoelectric vibration module and the second piezoelectric vibration module is a flat piezoelectric vibration module or a curved piezoelectric vibration module.

[0010] Optionally, at least one first piezoelectric vibration module is a plurality of first piezoelectric vibration modules, and at least one second piezoelectric vibration module is a plurality of second piezoelectric vibration modules, wherein the plurality of first piezoelectric vibration modules are arranged in a linear manner or a non-linear manner, and the second piezoelectric vibration modules are arranged in a linear manner or a non-linear manner.

[0011] Optionally, the sound-generating device further includes a first treble response enhancement module and a second treble response enhancement module. The first treble response enhancement module is made of a rigid material, and its rigidity is greater than the rigidity of the substrate of the reflective plate or the semiconductor light-emitting diode display panel, and is arranged on the first side of the back side of the reflective plate of the liquid crystal display panel of the display, or is arranged on the first side of the back side of the semiconductor light-emitting diode display panel of the display. The second treble response enhancement module is made of a rigid material, and its rigidity is greater than the rigidity of the substrate of the reflective plate or the semiconductor light-emitting diode display panel, and is arranged on the first side of the back side of the reflective plate of the liquid crystal display panel of the display, or is arranged on the first side of the back side of the semiconductor light-emitting diode display panel of the display. The first piezoelectric vibration module is formed on the surface of the first treble response enhancement module, and the second piezoelectric vibration module is formed on the surface of the second treble response enhancement module.

[0012] Optionally, the sound-generating device further includes a grille-shaped high-frequency response enhancement module. The grille-shaped high-frequency response enhancement module is made of a rigid material, and its rigidity is greater than that of the reflective plate or the substrate of the semiconductor light-emitting diode display panel, and is disposed from the first side to the second side of the back side of the reflective plate of the liquid crystal display panel of the display, or from the first side to the second side of the back side of the semiconductor light-emitting diode display panel of the display, and contacts the first high-frequency response enhancement module and the second high-frequency response enhancement module.

[0013] Optionally, the sound-generating device further includes a third treble response enhancement module and a fourth treble response enhancement module. The third treble response enhancement module is made of a rigid material, and its rigidity is greater than the rigidity of the substrate of the reflective plate or the semiconductor light-emitting diode display panel, and is arranged on the first side of the back side of the reflective plate of the liquid crystal display panel of the display, or is arranged on the first side of the back side of the semiconductor light-emitting diode display panel of the display. The fourth treble response enhancement module is made of a rigid material, and its rigidity is greater than the rigidity of the substrate of the reflective plate or the semiconductor light-emitting diode display panel, and is arranged on the first side of the back side of the reflective plate of the liquid crystal display panel of the display, or is arranged on the first side of the back side of the semiconductor light-emitting diode display panel of the display. The third treble response enhancement module is spaced from the first treble response enhancement module, and the fourth treble response enhancement module is spaced from the second treble response enhancement module.

[0014] Optionally, the sound channel isolation module is a soft magnet, but not limited to this, and is attached to the back of a reflective plate of a liquid crystal display panel of the display, or to the back of a semiconductor light emitting diode display panel of the display.

[0015] Based on the second aspect of the utility model, the utility model embodiment further provides a sound-generating device integrated in a display, which includes a plurality of piezoelectric vibration modules. The plurality of piezoelectric vibration modules are arranged on the back of a reflective plate displaying a liquid crystal display panel, or on the back of a semiconductor light-emitting diode display panel of the display, wherein the display is a liquid crystal display or a semiconductor light-emitting diode display, and the plurality of piezoelectric vibration modules are arranged on one of the four sides of the back of the reflective plate, two opposite sides, or four sides, or the plurality of piezoelectric vibration modules are arranged on one of the four sides of the back of the semiconductor light-emitting diode display panel, two opposite sides, or four sides.

[0016] Based on the third aspect of the present invention, an embodiment of the present invention further provides a display, which includes any one of the above-mentioned sound-generating devices and a liquid crystal display panel or a semiconductor light emitting diode display panel.

[0017] The utility model has the following beneficial effects:

[0018] The embodiment of the utility model provides a sound device integrated into a display and a display, and compared with the prior art, after the sound device is integrated into the display, the thickness and weight of the display will not increase too much, and it still meets the trend of thin and light displays. On the other hand, the sound device can be directly integrated into the display without the need for an additional film, which can effectively save manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic exploded view of a display integrated with a sound generating device according to an embodiment of the present invention.

[0020] Figure 2 It is a schematic exploded view of a display integrated with a sound-generating device according to another embodiment of the present invention.

[0021] Figure 3 It is a schematic plan view of a sound-generating device according to a first embodiment of the utility model being integrated into a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display.

[0022] Figure 4 It is a schematic plan view of a second embodiment of the present utility model in which a sound-generating device is integrated into a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display.

[0023] Figure 5 It is a schematic plan view of a sound-generating device according to a third embodiment of the utility model being integrated into a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display.

[0024] Figure 6 It is a schematic plan view of a sound-generating device according to a fourth embodiment of the utility model being integrated into a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display.

[0025] Figure 7 It is a schematic plan view of a fifth embodiment of the present utility model in which a sound-generating device is integrated into a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display.

[0026] Description of the figure number:

[0027] 1: Display

[0028] 10: Back panel

[0029] 11: LCD panel

[0030] 111: Reflector

[0031] 112: Light guide plate

[0032] 113: Diffuser

[0033] 114: Brightening film

[0034] 115: Lower polarizing film

[0035] 116: Thin Film Transistor Liquid Crystal Panel

[0036] 117: Upper polarizing film

[0037] 12: Semiconductor light emitting diode display panel

[0038] 13: Touch panel

[0039] 14: Cover

[0040] 21: The first piezoelectric vibration module

[0041] 22: Second piezoelectric vibration module

[0042] 23: Channel isolation module

[0043] 231: Rigid body

[0044] 232: Sound wave absorbing packaging material

[0045] 233: Soft magnet unit

[0046] 234: Mold

[0047] 24: First treble response enhancement module

[0048] 25: Second high frequency response enhancement module

[0049] 26: Grille-shaped high-frequency response enhancement module

[0050] 27: Third treble response enhancement module

[0051] 28: The fourth treble response enhancement module. DETAILED DESCRIPTION

[0052] The embodiment of the utility model provides a sound device and a display that uses a piezoelectric vibration module and can be integrated with a display. The sound device is directly arranged on the back of the reflective plate of the liquid crystal display panel of the display or the back of the semiconductor light emitting diode display panel of the display, so that the thickness and weight of the display integrated with the sound device will not increase too much, and there is no need to use an additional film as an intermediate attachment layer.

[0053] Please refer to Figure 1 and Figure 3 , Figure 1 FIG. 1 is a schematic exploded view of a display with an integrated sound-generating device according to an embodiment of the present invention. Figure 1In the embodiment of the present invention, the display 1 is a liquid crystal display, which includes a back plate 10 (for example but not limited to an aluminum plate), a liquid crystal display panel 11, a touch panel 13 and a cover plate 14, wherein the back plate 10, the liquid crystal display panel 11, the touch panel 13 and the cover plate 14 are sequentially stacked to form a liquid crystal display. In addition, the back plate 10, the touch panel 13 and the cover plate 14 are usually necessary components of the display 1 of the terminal product, but for the display function to be generated, the necessary component of the display 1 is the liquid crystal display panel 11.

[0054] The liquid crystal display panel 11 includes a reflector 111, a light guide plate 112, a diffusion film 113 (for example but not limited to a bright dot film), a brightness enhancement film 114 (for example but not limited to a composite film), a lower polarizing film 115, a thin film crystal liquid crystal panel 116 and an upper polarizing film 117, wherein the reflector 111, the light guide plate 112, the diffusion film 113, the brightness enhancement film 114, the lower polarizing film 115, the thin film crystal liquid crystal panel 116 and the upper polarizing film 117 are sequentially stacked to form the liquid crystal display panel 11. The back plate 10, the reflector 111, the light guide plate 112, the diffusion film 113, the brightness enhancement film 114 and the lower polarizing film 115 form a so-called backlight module.

[0055] Young's modulus (or elastic modulus) is a number used to evaluate whether a substance is an elastic substance. The larger the Young's modulus of a substance, the less likely the substance is to deform. Therefore, because the sound-generating device emits sound by relying on the vibration of an object, it is necessary to select a component with a small Young's modulus and a setting position that cannot affect the display screen to integrate the sound-generating device. The material of the reflective plate 111 is usually a plastic organic substance, for example, a PET (polyethylene terephthalate) plate, whose Young's modulus is about 2 to 2.5 GPa, and the sound-generating device is set on the back of the reflective plate 111 and will not affect the display of the screen. Therefore, in an embodiment of the utility model, the sound-generating device can be set on the back of the reflective plate 111.

[0056] Further, please also refer to Figure 1 and Figure 3 ,as well as Figure 3It is a schematic plan view of the sound-generating device of the first embodiment of the utility model integrated into the reflective plate of the liquid crystal display panel of the display or the semiconductor light-emitting diode display panel of the display. The sound-generating device includes at least one first piezoelectric vibration module 21, at least one second piezoelectric vibration module 22 and a sound channel isolation module 23. The first piezoelectric vibration module 21 is arranged on the first side (for example, the left side) of the back side of the reflective plate 111 of the liquid crystal display panel 11 of the display 1. The second piezoelectric vibration module 22 is arranged on the second side (for example, the right side) of the back side of the reflective plate 111 of the liquid crystal display panel 11 of the display 1 relative to the first side. The sound channel isolation module 23 is arranged on the back side of the reflective plate 111 of the liquid crystal display panel 11 of the display 1, and is arranged between the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22, for example, arranged on the center line of the back side of the reflective plate 111, but is not limited to this.

[0057] The first piezoelectric vibration module 21 is electrically connected to a sound amplifier and receives a control signal corresponding to the intensity and audio. The control signal causes the first piezoelectric vibration module 21 to vibrate accordingly, and the reflector 111 vibrates accordingly, and drives the entire liquid crystal display panel 11 to vibrate, thereby producing the sound of the right channel. The second piezoelectric vibration module 22 is electrically connected to another sound amplifier and receives a control signal corresponding to the intensity and audio. The control signal causes the second piezoelectric vibration module 22 to vibrate accordingly, and the reflector 111 vibrates accordingly, and drives the entire liquid crystal display panel 11 to vibrate, thereby producing the sound of the left channel. In addition, the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22 can also be electrically connected to the same sound amplifier and receive the same control signal, but in this case, the sound-generating device can only produce monophonic sound.

[0058] Considering that the vibrations of the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22 may affect each other, and the worst case may be destructive interference, it is preferred that the sound channel isolation module 23 is disposed between the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22. However, the sound channel isolation module 23 is not necessarily a necessary component, and if the vibrations of the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22 do not affect each other much, the sound channel isolation module 23 can be omitted.

[0059] Generally speaking, the sound generated by the vibration of the liquid crystal display panel 11 may not be ideal in high-frequency response. Therefore, in terms of design, the sound channel isolation module 23 may include a rigid body 231 and a sound wave absorbing packaging material 232. The rigid body 231 is attached to the back of the reflector 111 of the liquid crystal display panel 11 of the display 1, and the sound wave absorbing packaging material 232 covers at least a portion of the rigid body 231. In this embodiment, the rigid body 231 is, for example but not limited to, a copper wire or a copper sheet, or a metal alloy, carbon fiber, fiber reinforced plastic, ceramic, etc. In short, the rigidity of the rigid body 231 must be higher than the rigidity of the reflector 111, and the sound wave absorbing packaging material 232 is, for example but not limited to, a foam, and is formed by, for example, polyurethane foam plastic (PU), polyethylene (PE), ethylene-vinyl acetate copolymer (EVA), thermoplastic rubber (TPE) or polyvinyl chloride (PVC).

[0060] Please refer to Figure 2 and Figure 3 , Figure 2 is a schematic exploded view of a display with an integrated sound device in another embodiment of the present invention, and Figure 3 This is a schematic plan view of the sound-generating device of the first embodiment of the utility model integrated into the reflective plate of the liquid crystal display panel of the display or the semiconductor light-emitting diode display panel of the display. Figure 2 In the embodiment of the present invention, the display 1 is a semiconductor light emitting diode display, which includes a back plate 10 (for example but not limited to an aluminum plate), a semiconductor light emitting diode display panel 12, a touch panel 13 and a cover plate 14, wherein the back plate 10, the semiconductor light emitting diode display panel 12, the touch panel 13 and the cover plate 14 are stacked in sequence to form a display. The semiconductor light emitting diode display is, for example, an organic light emitting diode (OLED), a small light emitting diode (mini LED), a micro light emitting diode (micro LED) or a plastic organic light emitting diode (POLED).

[0061] The back of the semiconductor light emitting diode display panel 12 is a substrate, and the substrate can be a polyimide (PI) film substrate or a glass substrate. The Young's modulus of polyimide is about 3.3 GPa, and the Young's modulus of the glass substrate is about 50 to 70 GPa, and the sound-generating device is arranged on the back of the substrate of the semiconductor light emitting diode display panel 12 without affecting the display of the picture. Therefore, in the embodiment of the utility model, the sound-generating device can be arranged on the back of the semiconductor light emitting diode display panel 12. In addition, the back plate 10, the touch panel 13 and the cover plate 14 are usually necessary components of the display 1 of the terminal product, but for the display function to be generated, the necessary component of the display 1 is the semiconductor light emitting diode display panel 12.

[0062] Further, please also refer to Figure 2 and Figure 3 In this embodiment, the first piezoelectric vibration module 21 is disposed on a first side (e.g., the left side) of the back side of the semiconductor light emitting diode display panel 12 of the display 1. The second piezoelectric vibration module 22 is disposed on a second side (e.g., the right side) of the back side of the semiconductor light emitting diode display panel 12 of the display 1 relative to the first side. The sound channel isolation module 23 is disposed on the back side of the semiconductor light emitting diode display panel 12 of the display 1, and is disposed between the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22, for example, disposed on the center line of the back side of the semiconductor light emitting diode display panel 12, but is not limited thereto.

[0063] Please continue to refer to Figure 3 In this embodiment, at least one first piezoelectric vibration module 21 is four first piezoelectric vibration modules 21, and at least one second piezoelectric vibration module 22 is four second piezoelectric vibration modules 22, wherein the four first piezoelectric vibration modules 21 are arranged in a straight line, and the four second piezoelectric vibration modules 22 are arranged in a straight line. However, the present invention is not limited to this, and in other embodiments, the four first piezoelectric vibration modules 21 are arranged in a non-linear manner, and the four second piezoelectric vibration modules 22 are arranged in a non-linear manner. Furthermore, not only the arrangement, but also the detailed placement positions and quantities of the plurality of first piezoelectric vibration modules 21 and the second piezoelectric vibration modules 22 are not used to limit the present invention. The detailed placement positions, quantities and arrangement of the plurality of first piezoelectric vibration modules 21 and the second piezoelectric vibration modules 22 will be adjusted due to the different sizes and types of the display 1 so that the full audio response meets the design requirements.

[0064] Please refer to Figure 4 , Figure 41 is a schematic plan view of a sound-generating device according to a second embodiment of the present invention integrated with a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display. In this embodiment, the sound-generating device further includes a first high-frequency response enhancement module 24 and a second high-frequency response enhancement module 25. The first high-frequency response enhancement module 24 is made of a rigid material (such as metal foil, copper foil, aluminum foil, stainless steel foil or copper-aluminum alloy foil, or glass fiber composite material, reinforced tempered glass, but not limited thereto), and the rigidity of the first high-frequency response enhancement module 24 is higher than the rigidity of the reflective plate 111 or the substrate of the semiconductor light-emitting diode display panel 12, and is disposed on a first side of the back side of the reflective plate 111 of the liquid crystal display panel 11 of the display 1, or disposed on a first side of the back side of the semiconductor light-emitting diode display panel 12 of the display 1. The second treble response enhancement module 25 is made of a rigid material (such as metal foil, copper foil, aluminum foil, stainless steel foil or copper-aluminum alloy foil, or glass fiber composite material, reinforced tempered glass, but not limited to this, as long as the rigidity of the second treble response enhancement module 25 is higher than the rigidity of the reflector 111 or the substrate of the semiconductor light emitting diode display panel 12), and is disposed on the second side of the back side of the reflector 111 of the liquid crystal display panel 11 of the display 1, or is disposed on the second side of the back side of the semiconductor light emitting diode display panel 12 of the display 1.

[0065] In this embodiment, the plurality of first piezoelectric vibration modules 21 are three first piezoelectric vibration modules 21, and the three first piezoelectric vibration modules 21 are formed on the surface of the first treble response enhancement module 24; the plurality of second piezoelectric vibration modules 22 are three second piezoelectric vibration modules 22, and the three second piezoelectric vibration modules 22 are formed on the surface of the second treble response enhancement module 25. In addition, the first treble response enhancement module 24 and the second treble response enhancement module 25 are made of rigid materials in order to enhance the treble response, so as to avoid poor treble response and excessive high-frequency harmonic distortion.

[0066] In this embodiment, each of the top two of the three first piezoelectric vibration modules 21 is a piezoelectric vibration module of a single vibration cavity, and the bottom one of the three first piezoelectric vibration modules 21 is a piezoelectric vibration module composed of two secondary vibration cavities; each of the top two of the three second piezoelectric vibration modules 22 is a piezoelectric vibration module of a single vibration cavity, and the bottom one of the three second piezoelectric vibration modules 22 is a piezoelectric vibration module composed of two secondary vibration cavities. In addition, it should be noted that the types of the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22 are not used to limit the present invention, that is, the above practice is not used to limit the present invention. Furthermore, if the display 1 is a flat display, each of the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22 is a flat piezoelectric vibration module; if the display 1 is a curved display, each of the first piezoelectric vibration module 21 and the second piezoelectric vibration module 22 is a curved piezoelectric vibration module.

[0067] Please refer to Figure 5 , Figure 5 1 is a schematic plan view of a sound-generating device according to a third embodiment of the present invention integrated with a reflective plate of a liquid crystal display panel of a display or a semiconductor light-emitting diode display panel of a display. In this embodiment, the sound-generating device further includes a third high-frequency response enhancement module 27 and a fourth high-frequency response enhancement module 28. The third high-frequency response enhancement module 27 is made of a rigid material (such as stainless steel or copper, but not limited thereto), and is disposed on the first side of the back side of the reflective plate 111 of the liquid crystal display panel 11 of the display 1, or is disposed on the first side of the back side of the semiconductor light-emitting diode display panel 12 of the display 1. The fourth high-frequency response enhancement module 28 is made of a rigid material (such as stainless steel or copper, but not limited thereto), and is disposed on the first side of the back side of the reflective plate 111 of the liquid crystal display panel 11 of the display 1, or is disposed on the first side of the back side of the semiconductor light-emitting diode display panel 12 of the display 1. The third high-frequency response enhancement module 27 and the first high-frequency response enhancement module 24 are spaced apart from each other, and the fourth high-frequency response enhancement module 28 and the second high-frequency response enhancement module 25 are spaced apart from each other. The third treble response enhancement module 27 and the fourth treble response enhancement module 28 can further enhance the treble response, reduce high-frequency harmonic distortion, and improve sound quality.

[0068] Please refer to Figure 6 , Figure 6 This is a schematic plan view of the sound-generating device of the fourth embodiment of the utility model integrated into the reflective plate of the liquid crystal display panel of the display or the semiconductor light-emitting diode display panel of the display. Figure 4In this embodiment, the sound channel isolation module 23 is a soft magnet and is attached to the back of the reflective plate 111 of the liquid crystal display panel 11 of the display 1, or to the back of the semiconductor light emitting diode display panel 12 of the display 1. Further, the soft magnet includes a plurality of soft magnet units 233 and a mold 234, the soft magnet unit 233 is adhered to one side of the mold 234, and the other side of the mold 234 is attached to the back of the reflective plate 111 of the liquid crystal display panel 11 of the display 1, or to the back of the semiconductor light emitting diode display panel 12 of the display 1.

[0069] Please refer to Figure 7 , Figure 7 This is a schematic plan view of the fifth embodiment of the present invention in which the sound-generating device is integrated into the reflective plate of the liquid crystal display panel of the display or the semiconductor light-emitting diode display panel of the display. Figure 4 In this embodiment, although the sound-generating device does not have the channel isolation module 23, it further includes a grille-shaped treble response enhancement module 26. The grille-shaped treble response enhancement module 26 is made of a rigid material (such as stainless steel or copper, but not limited thereto), and is disposed from the first side to the second side of the back side of the reflector 111 of the liquid crystal display panel 11 of the display 1, or is disposed from the first side to the second side of the back side of the semiconductor light-emitting diode display panel 12 of the display 1, and contacts the first treble response enhancement module 24 and the second treble response enhancement module 25. The provision of the grille-shaped treble response enhancement module 26 can further enhance the treble response, reduce high-frequency harmonic distortion, and improve sound quality.

[0070] Please note that in the above embodiments, the first side and the second side are respectively the left side and the right side, but the utility model is not limited to this. In other embodiments, the first side and the second side may also be the upper side and the lower side, and the sound-emitting device is used as a monophonic sound-emitting device. In another implementation, it can be designed that the four sides (upper, lower, left, and right sides) of the back of the reflector or the four sides of the back of the semiconductor light-emitting diode display panel are all equipped with a plurality of piezoelectric vibration modules. Since the display may be designed to be rotatable, the display controls the plurality of piezoelectric vibration modules on the two opposite sides to vibrate according to its placement, so that the display can be placed in a different way and effectively present the sound of the left and right channels. In addition, in some embodiments, if the sound-emitting device is used as a monophonic sound-emitting device, it can be designed that the plurality of piezoelectric vibration modules are only arranged on one of the four sides (upper, lower, left, and right sides) of the back of the reflector or one of the four sides of the back of the semiconductor light-emitting diode display panel.

[0071] From the above description, it can be seen that the embodiments of the utility model provide a sound-generating device and a display integrated in a display, and compared with the prior art, the sound-generating device uses a piezoelectric vibration module instead of a coil vibrator, so after being integrated into the display, the thickness and weight of the display will not increase too much, and it still conforms to the trend of thin and light displays. On the other hand, the sound-generating device can be directly integrated into the display without the need for an additional film, which can effectively save manufacturing costs. Furthermore, in some embodiments, various treble response enhancement modules can be added to enhance the treble response, reduce high-frequency harmonic distortion, and increase sound quality, and in some embodiments, a channel isolation module can be added to avoid the degradation of sound quality caused by mutual interference between the sounds of the left and right channels.

Claims

1. A sound device integrated into a display, characterized in that: include: At least one first piezoelectric vibration module is disposed on a first side of a back surface of a reflective plate of a liquid crystal display panel of a display, or disposed on a first side of a back surface of a semiconductor light emitting diode display panel of the display, wherein the display is a liquid crystal display or a semiconductor light emitting diode display; as well as At least one second piezoelectric vibration module is disposed on a second side of the back side of the reflective plate of the liquid crystal display panel of the display relative to the first side, or is disposed on a second side of the back side of the semiconductor light emitting diode display panel of the display relative to the first side.

2. The sound-generating device according to claim 1, characterized in that: Also includes: A channel isolation module is arranged on the back side of the reflective plate of the liquid crystal display panel of the display, or on the back side of the semiconductor light emitting diode display panel of the display, and is arranged between the first piezoelectric vibration module and the second piezoelectric vibration module.

3. The sound-generating device according to claim 2, characterized in that: The sound channel isolation module includes a rigid body and a sound wave absorbing packaging material. The rigid body is attached to the back side of the reflective plate of the liquid crystal display panel of the display or the back side of the semiconductor light emitting diode display panel of the display. The sound wave absorbing packaging material covers at least a portion of the rigid body and is attached to the back side of the reflective plate of the liquid crystal display panel of the display or the back side of the semiconductor light emitting diode display panel of the display.

4. The sound-generating device according to claim 3, characterized in that: The rigidity of the rigid body is greater than the rigidity of the reflective plate or a substrate of the semiconductor light emitting diode display panel.

5. The sound generating device according to claim 1, characterized in that: The display is a flat display or a curved display, and correspondingly, each of the first piezoelectric vibration module and the second piezoelectric vibration module is a flat piezoelectric vibration module or a curved piezoelectric vibration module.

6. The sound generating device according to claim 1, characterized in that: The at least one first piezoelectric vibration module is a plurality of first piezoelectric vibration modules, and the at least one second piezoelectric vibration module is a plurality of second piezoelectric vibration modules, wherein the plurality of first piezoelectric vibration modules are arranged in a straight line or a non-linear manner, and the second piezoelectric vibration modules are arranged in the straight line or the non-linear manner.

7. The sound generating device according to claim 1, characterized in that: Also includes: a first high-frequency response enhancement module, which is made of a rigid material, and has a rigidity greater than that of a substrate of the reflector or the semiconductor light-emitting diode display panel, and is disposed on the first side of the back surface of the reflector of the liquid crystal display panel of the display, or is disposed on the first side of the back surface of the semiconductor light-emitting diode display panel of the display; as well as a second high-frequency response enhancement module, which is made of a rigid material, and has a rigidity greater than that of the reflector or the substrate of the semiconductor light-emitting diode display panel, and is disposed on the first side of the back surface of the reflector of the liquid crystal display panel of the display, or is disposed on the first side of the back surface of the semiconductor light-emitting diode display panel of the display; The first piezoelectric vibration module is formed on the surface of the first high-frequency response enhancement module, and the second piezoelectric vibration module is formed on the surface of the second high-frequency response enhancement module.

8. The sound generating device according to claim 7, characterized in that: Also includes: A grille-shaped treble response enhancement module is made of a rigid material, and its rigidity is greater than the rigidity of the reflective plate or the substrate of the semiconductor light-emitting diode display panel. It is arranged from the first side to the second side of the back side of the reflective plate of the liquid crystal display panel of the display, or is arranged from the first side to the second side of the back side of the semiconductor light-emitting diode display panel of the display, and contacts the first treble response enhancement module and the second treble response enhancement module.

9. The sound generating device according to claim 7, characterized in that: Also includes: a third high-frequency response enhancement module, which is made of a rigid material, and has a rigidity greater than that of the reflector or the substrate of the semiconductor light-emitting diode display panel, and is disposed on the first side of the back surface of the reflector of the liquid crystal display panel of the display, or is disposed on the first side of the back surface of the semiconductor light-emitting diode display panel of the display; and a fourth high-frequency response enhancement module, which is made of a rigid material, and has a rigidity greater than that of the reflector or the substrate of the semiconductor light-emitting diode display panel, and is disposed on the first side of the back surface of the reflector of the liquid crystal display panel of the display, or is disposed on the first side of the back surface of the semiconductor light-emitting diode display panel of the display; The third high-frequency response enhancement module and the first high-frequency response enhancement module are spaced apart from each other, and the fourth high-frequency response enhancement module and the second high-frequency response enhancement module are spaced apart from each other.

10. The sound generating device according to claim 2, characterized in that: The sound channel isolation module is a soft magnet and is attached to the back side of the reflective plate of the liquid crystal display panel of the display, or to the back side of the semiconductor light emitting diode display panel of the display.

11. A sound-generating device integrated into a display, characterized in that: include: A plurality of piezoelectric vibration modules are arranged on a back side of a reflective plate of a liquid crystal display panel of a display, or on a back side of a semiconductor light emitting diode display panel of the display, wherein the display is a liquid crystal display or a semiconductor light emitting diode display, and the plurality of piezoelectric vibration modules are arranged on one side, two opposite sides, or four sides of the back side of the reflective plate, or the plurality of piezoelectric vibration modules are arranged on one side, two opposite sides, or four sides of the back side of the semiconductor light emitting diode display panel.

12. A display, characterized in that: include: The sound-generating device according to any one of claims 1 to 11; as well as The liquid crystal display panel or the semiconductor light emitting diode display panel.

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