Display device

Abstract

The present invention provides a display device comprising a display structure, a sound-generating substrate, a vibration unit, and a vibration transmission vibrator. The display structure is configured to display image information. The sound-generating substrate is attached to the rear side of the display structure. An exciter is connected to the rear side of the sound-generating substrate and configured to drive the sound-generating substrate to emit mid- and high-pitched sounds. The vibration unit is disposed on the rear side of the sound-generating substrate and spaced apart from the sound-generating substrate. The vibration unit is fixed to an external hanger or wall and is capable of generating vibrations. The vibration transmission vibrator is connected between the sound-generating substrate and the vibration unit to transmit the vibration of the vibration unit to the sound-generating substrate, causing the sound-generating substrate to vibrate and generate sound. The exciter drives the sound-generating substrate to vibrate, emitting mid- and high-pitched sounds, while the vibration unit vibrates, emitting low-pitched sounds. The vibration unit is fixed to the hanger or wall, and the vibration transmission vibrator drives the sound-generating substrate to vibrate. The vibration of the vibration unit and the vibration of the sound-generating substrate are superimposed, thereby reinforcing the low-pitched sounds and improving the bass effect of the display device.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display device. Background Art

[0002] With the continuous advancement of electronic technology and increasing customer demands, display devices are moving towards larger sizes and thinner weights. As these devices become thinner and lighter overall, they also require internal sound-generating devices such as speakers. Due to the limited internal space of display devices, there is little room for speaker installation. As a result, speakers installed in display devices are typically only capable of basic playback functions and cannot achieve multi-channel sound effects, resulting in poor speaker playback performance.

[0003] Some technologies utilize "flat panel sound generation technology" in electronic devices. An electromagnetic exciter is placed behind the display screen. Under the influence of the electromagnetic exciter, the display screen generates sound through bending waves generated by modal resonance. This allows the display screen in an electronic device to function both as a display and as a sound generator, replacing the speaker. This eliminates the need for dedicated speaker mounting locations, enabling a thinner and lighter design.

[0004] However, when a display device is mounted on a wall, the back of the display is very close to the wall, creating a wide, thin "air cavity" behind the screen. Due to the thinness of this air cavity (20mm or even less), its equivalent acoustic compliance is very low (equivalent to a hard spring pressing against the screen). This acoustic compliance suppresses the vibration amplitude of the display when the electromagnetic exciter drives it to vibrate, particularly at low frequencies, impairing the bass sound produced by the vibrating screen. Summary of the Invention

[0005] An object of the present invention is to provide a display device to enhance the vibration of the display device and improve the bass effect of the display device.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] According to one aspect of the present invention, the present invention provides a display device, including a display structure, a sound-generating substrate, an exciter, a vibration unit and a vibration transmission vibrator; the display structure is used to display image information; the sound-generating substrate is located on the rear side of the display structure; the exciter is connected to the rear side surface of the sound-generating substrate, and is used to drive the sound-generating substrate to emit mid- and high-pitched sounds; the vibration unit is used to emit bass; the vibration unit is arranged on the rear side of the sound-generating substrate and is spaced apart from the sound-generating substrate; the vibration unit is fixed to an external bracket or wall and can generate vibration; the vibration transmission vibrator is connected between the sound-generating substrate and the vibration unit to transmit the vibration of the vibration unit to the sound-generating substrate, so that the sound-generating substrate vibrates and makes sound.

[0008] In some embodiments, the display device further includes a loudspeaker disposed on the rear side of the sound-emitting substrate, the loudspeaker forming a sound-emitting cavity with a gradually expanding inner diameter; the sound-emitting cavity passes through both ends of the loudspeaker, and the end with a larger diameter of the sound-emitting cavity is disposed along the rear side surface of the sound-emitting substrate toward the outside of the sound-emitting substrate.

[0009] In some embodiments, the loudspeaker is provided in plurality and is respectively provided corresponding to the exciter and the vibration unit.

[0010] In some embodiments, the vibration unit includes a connector fixed to an external bracket or wall, and a speaker connected to the connector for driving the connector to vibrate; the vibration transmitting vibrator is connected between the sound-generating substrate and the connector.

[0011] In some embodiments, the connecting member includes a fixed portion and a vibrating portion flexibly connected to the fixed portion on the side facing the sound-generating substrate; the fixed portion and the vibrating portion enclose a box-like structure with a hollow interior; the speaker is connected to the fixed portion and can drive the vibrating portion to vibrate; the vibration transmitter is connected to the vibrating portion.

[0012] In some embodiments, the speaker is embedded in the connector and passes through the fixing portion; the speaker and the fixing portion are sealed and a closed space is formed between the interior of the connector and the speaker; one end of the speaker has a vibration membrane for vibrating and producing sound, and the two sides of the vibration membrane are the internal space of the connector and the external space of the connector respectively.

[0013] In some embodiments, the speaker includes a bracket, a magnet arranged in the bracket, a basin surrounding the outer periphery of the bracket, and the vibration membrane; one end of the basin is connected to the bracket; the vibration membrane is located within the enclosed range of the basin and is connected between the end of the basin facing away from the bracket and the bracket; the basin is embedded in the connecting member, and the outer side surface of the basin is sealed to the fixing part, thereby forming a closed space between the connecting member and the speaker.

[0014] In some embodiments, the vibration membrane is located at an end of the bracket away from the vibration part.

[0015] In some embodiments, a plurality of the vibration parts are provided on a side of the fixing part facing the sound-generating substrate, and a plurality of the vibration-transmitting vibrators are correspondingly provided on the sound-generating substrate.

[0016] In some embodiments, one end of the vibration transmitting vibrator is fixedly connected to the sound-generating substrate, and the other end of the vibration transmitting vibrator is magnetically adsorbed on the vibration part.

[0017] In some embodiments, a limiting groove is provided on the vibration part corresponding to the vibration transmitting vibrator, and the vibration transmitting vibrator extends into the limiting groove and is connected to the vibration part.

[0018] It can be seen from the above technical solutions that the present invention has at least the following advantages and positive effects:

[0019] In the present invention, the exciter drives the sound-generating substrate to vibrate, producing mid- and high-pitched sounds, while the vibration unit vibrates to produce bass sounds. The vibration unit is fixedly attached to a bracket or wall, and directly drives the sound-generating substrate to vibrate via a vibration-transmitting vibrator. The force generated by the vibration of the vibration unit is not used to reversely drive the vibration unit relative to the sound-generating substrate. As a result, the force generated by the vibration of the vibration unit is used more to drive the vibration of the sound-generating substrate, reducing energy loss and enhancing vibration. The vibration of the vibration unit and the vibration of the sound-generating substrate combine to enhance the bass sound, thereby improving the bass effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic structural diagram of a display device having an actuator.

[0021] Figure 2 Schematic diagram of the structure of another display device with an actuator.

[0022] Figure 3 for Figure 1 A schematic cross-sectional structural diagram of the display device.

[0023] Figure 4 yes Figure 1 Schematic diagram of the structure of the display device being hung on a wall panel.

[0024] Figure 5 FIG. 1 is a schematic cross-sectional view of a first embodiment of a display device according to the present invention.

[0025] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0026] Figure 7 2 is a schematic cross-sectional view of the vibration unit in the first embodiment of the display device of the present invention.

[0027] Figure 8 FIG. 1 is a schematic cross-sectional view of the speaker in the first embodiment of the display device of the present invention.

[0028] Figure 9 It is a partial schematic diagram of the side view of an embodiment of a display device of the present invention.

[0029] Figure 10 A schematic diagram of the back structure of a display device according to an embodiment of the present invention.

[0030] Figure 11 FIG. 1 is a schematic structural diagram of a multi-channel display device according to a first embodiment of the present invention.

[0031] Figure 12 FIG. 1 is a schematic structural diagram of a second embodiment of a multi-channel display device according to the present invention.

[0032] Figure 13 A schematic diagram of the back structure of another embodiment of a display device of the present invention.

[0033] Figure 14 FIG. 1 is a schematic structural diagram of a third embodiment of a multi-channel display device according to the present invention.

[0034] Figure 15 It is a partial schematic diagram of the side view of another embodiment of the display device of the present invention.

[0035] Figure 16 It is a schematic structural diagram of a hanging bracket in the display device of the present invention.

[0036] Figure 17 2 is a schematic structural diagram of a loudspeaker according to an embodiment of a display device of the present invention.

[0037] Figure 18 FIG. 1 is a schematic cross-sectional view of a second embodiment of a display device according to the present invention.

[0038] Figure 19 yes Figure 18 Enlarged view of point B in the middle.

[0039] Figure 20 2 is a schematic structural diagram of a vibration unit in a second embodiment of a display device according to the present invention.

[0040] Figure 21 2 is a schematic structural diagram of a speaker in a second embodiment of a display device according to the present invention.

[0041] Figure 22 2 is a schematic structural diagram of the front surface of the connecting member in the second embodiment of the display device of the present invention.

[0042] The following are the descriptions of the reference numerals:

[0043] 100. Display screen; 110. Display structure; 120. Sound-generating substrate; 121. Groove; 200. Exciter; 300. Hanger; 310. Mounting slot; 400. Wall; 500. Air cavity; 600. Vibration unit; 610. Connector; 611. Fixing part; 612. Vibration part; 613. Limiting slot; 620. Speaker; 621. Bracket; 622. Magnet; 623. Basin; 624. Vibrating membrane; 625. Limiting slot; 700. Vibration transmitting vibrator; 800. Loudspeaker; 810. Sound amplification cavity. DETAILED DESCRIPTION

[0044] Typical embodiments embodying the features and advantages of the present invention are described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative rather than limiting.

[0045] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0046] For ease of description and understanding, the direction of the display device facing the user is referred to as the front side, and the direction of the display device facing away from the user is referred to as the rear side.

[0047] Figure 1 The figure is a schematic structural diagram of a display device having an actuator. Figure 2 Schematic diagram of the structure of another display device with an actuator. Figure 3 for Figure 1 A schematic cross-sectional structural diagram of the display device.

[0048] See Figures 1 to 3 , Figure 1 In the embodiment, the display device may be a liquid crystal display device or an OLED display device. Figure 2 The display device is a laser display device. The display device has multiple exciters 200 arranged on the back side of the display screen 100, which can excite the entire display screen 100 to produce sound. Figure 1 The display screen is OLED or LCD. Figure 2 The display screen is a projection screen. Display screen 100 includes a display structure 110 and a sound-generating substrate 120. Display structure 110 is used to display image information. Under the action of an actuator 200, sound-generating substrate 120 generates sound through bending waves generated by modal resonance. This means the display device can be used for both display and vibration. Therefore, there's no need to install speakers in the electronic device, nor is there a need for external speakers, resulting in a thinner and lighter design.

[0049] Figure 4 yes Figure 1 Schematic diagram of the structure of the display device being hung on a wall panel.

[0050] See Figure 4 The display device is mounted on the wall 400 via a hanger 300. The rear side of the display screen 100 of the display device is very close to the wall 400, and an air cavity 500 with a very small gap is formed between the rear side of the display screen 100 and the wall 400. The thickness of the air cavity 500 is very thin (20 mm or even thinner), and its equivalent acoustic compliance is very small (equivalent to a hard spring pressing on the display screen 100). Due to the existence of this acoustic compliance, when the exciter 200 drives the display screen 100 to vibrate, the vibration amplitude of the display screen 100 is suppressed, and the sound emitted by the vibrating screen is damaged. In particular, since the vibration amplitude of the bass is large, the vibration amplitude of the display screen 100 is suppressed to a large extent, which makes the damage to the bass more serious. The exciter 200 can be an electromagnetic exciter, a ceramic exciter, a piezoelectric exciter, or an electric exciter.

[0051] At the same time, after the display device is hung on the wall 400 through the bracket 300, when the exciter 200 drives the display screen 100 to vibrate, the vibration of the display screen 100 is suppressed, so that the force exerted by the exciter 200 on the display screen 100 is more used to drive the exciter 200 to move relative to the display screen 100, resulting in energy loss and affecting the vibration and sound of the display screen 100.

[0052] Figure 5 FIG. 1 is a schematic cross-sectional structural diagram of a first embodiment of a display device according to the present invention. Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0053] See Figure 5 and Figure 6 This embodiment provides a display device including a display screen 100, a vibration unit 600 disposed on the rear side of the display screen 100, and a vibration transmission vibrator 700 connected between the vibration unit 600 and the display screen 100. The display screen 100 is mounted on a wall 400 via a hanger 300, and the vibration unit 600 is fixedly connected to the hanger 300 or the wall 400. The vibration unit 600 is capable of generating vibrations, which are directly transmitted to the display screen 100 via the vibration transmission vibrator 700, causing the display screen 100 to vibrate and produce sound.

[0054] The display screen 100 includes a display structure 110 for displaying image information and a sound-generating substrate 120 located behind the display structure 110. In this embodiment, the sound-generating substrate 120 is attached to the rear side of the display structure. In some embodiments, a gap exists between the sound-generating substrate 120 and the display structure 110, or the sound-generating substrate 120 and the display structure 110 are connected by a connector.

[0055] In this embodiment, the sound-generating substrate 120 is a honeycomb panel that can vibrate and generate sound. The panel has a honeycomb layer with multiple honeycomb pores. These pores have varying rigidity in different directions. Similarly, the compliance (i.e., flexibility) of these pores in different directions also varies. Therefore, when the sound-generating substrate vibrates, the vibration is attenuated to varying degrees in different directions as it propagates through the substrate. This results in different vibration amplitudes in different directions (i.e., giving the sound-generating substrate anisotropic mechanical response characteristics). Consequently, the sound generated by the sound-generating substrate varies in magnitude in different directions.

[0056] The vibration unit 600 is disposed on the rear side of the sound-generating substrate 120 and spaced apart from the sound-generating substrate 120. The vibration transmission vibrator 700 is connected between the vibration unit 600 and the sound-generating substrate 120. The vibration unit 600 is fixedly connected to the hanger 300 or the wall 400, and directly drives the sound-generating substrate 120 to vibrate via the vibration transmission vibrator 700. The force generated by the vibration of the vibration unit 600 is not used to reversely drive the vibration unit 600 relative to the sound-generating substrate 120. As a result, the force generated by the vibration of the vibration unit 600 is more used to drive the sound-generating substrate 120 to vibrate, thereby reducing energy loss and enhancing the vibration and sound of the display device.

[0057] The vibration unit 600 includes a connector 610 fixed to the hanger 300 or the wall 400, and a speaker 620 connected to the connector 610. The vibration transmission vibrator 700 is connected to the speaker 620 to transmit the vibration of the speaker 620 to the sound-emitting substrate 120. The vibration transmission vibrator 700 is directly connected to the speaker 620, directly transmitting the vibration of the speaker 620 to the sound-emitting substrate 120.

[0058] The speaker 620 itself can vibrate and produce sound, and the speaker 620 can drive the sound-generating substrate 120 to vibrate and produce sound. The superposition of the sound produced by the speaker 620 and the sound produced by the sound-generating substrate 120 enhances the sound produced by the display device.

[0059] In this embodiment, the speaker 620 is not directly fixed to the sound-generating substrate 120. Instead, the gap between the sound-generating substrate 120 and the bracket 300 is utilized. The sound generator 620 is placed in this gap and fixed to the bracket 300, allowing the display device to produce sound using the speaker 620. The sound produced by the speaker 620 is used to enable the display device to produce sound. After the vibration of the speaker 620 is transmitted to the sound-generating substrate 120, it causes the sound-generating substrate 120 to vibrate and produce sound. The sound produced by the speaker 620 and the sound produced by the sound-generating substrate 120 are superimposed, enhancing the sound effect of the display device.

[0060] Figure 7 FIG. 1 is a schematic cross-sectional view of the vibration unit 600 in the first embodiment of the display device of the present invention. Figure 8 FIG. 1 is a schematic cross-sectional view of the speaker in the first embodiment of the display device of the present invention.

[0061] See Figures 6 to 8 The specific structure of speaker 620 refers to the structure of speakers 620 in related art. Specifically, speaker 620 includes a bracket 621, a magnet 622 disposed within bracket 621, a frame 623 surrounding the outer periphery of bracket 621, and a diaphragm 624. One end of frame 623 is connected to bracket 621. Vibrating membrane 624 is located within the enclosure of frame 623 and connected between the end of frame 623 facing away from bracket 621 and bracket 621. Frame 623 is perforated through its wall. Vibrating membrane 624 is used to vibrate and produce sound. The vibration of diaphragm 624 drives the entire speaker 620 to vibrate.

[0062] A notch is formed at one end of the bracket 621, facing away from the diaphragm 624, to form a limiting slot 625. In this embodiment, the notch does not extend along the axis of the bracket 621 to the magnet 622, and the vibration-transmitting vibrator 700 is connected to the bracket 621. In some embodiments, the notch extends along the axis of the bracket 621 to the magnet 622, and the vibration-transmitting vibrator 700 is connected to the magnet 622.

[0063] The connecting member 610 is a box-like structure with a hollow interior; the speaker 620 is embedded in the connecting member 610 and passes through both ends of the connecting member 610; the speaker 620 and the connecting member 610 are sealed and a closed space is formed between the interior of the connecting member 610 and the speaker 620; the two sides of the vibration membrane 624 of the speaker 620 are the internal space of the connecting member 610 and the external space of the connecting member 610 respectively; the vibration transducer 700 is connected to the end of the speaker 620 facing away from the vibration membrane 624, so that a closed space is formed on one side of the vibration membrane 624, and the vibration of the vibration membrane 624 can be strengthened when the vibration membrane 624 vibrates.

[0064] In this embodiment, the connecting member 610 is a box-type structure with a hollow interior; the basin frame 623 is embedded in the connecting member 610, and the outer side surface of the basin frame 623 and the two spaced-apart side walls of the connecting member 610 are sealed and connected, thereby forming a closed space between the connecting member 610 and the speaker 620, so that the two sides of the vibration membrane 624 contact the internal space of the connecting member 610 and the external space of the connecting member 610 respectively.

[0065] In this embodiment, the speaker 620 is embedded within the connector 610, forming an enclosed space between the speaker 620 and the connector 610. When the speaker 620 vibrates in free space, the low-frequency sound waves emitted by the front and back surfaces of the diaphragm 624 cancel each other out, creating an acoustic short circuit. Once the speaker 620 is installed within the connector 610, with the two sides of the diaphragm 624 contacting the enclosed space inside the connector 610 and the space outside the connector 610, respectively, the sound emitted from the back surface of the diaphragm 624 is confined within the connector 610, eliminating the acoustic short circuit and enhancing the bass effect. Furthermore, due to the principle of conservation of momentum and the transmissibility of force, the momentum driving the diaphragm 624 to vibrate is equal to the momentum driving the vibration element 700 to vibrate. Considering the stationary position of the vibration unit 600 as the origin, the diaphragm 624 and the frame 623 "expand" or "contract" simultaneously. This determines that the vibrations of the sound-generating substrate 120 and the vibration membrane 624 are in the same phase, that is, the bass sounds emitted by the sound-generating substrate 120 and the vibration membrane 624 are superimposed to enhance the overall bass effect.

[0066] In this embodiment, the connecting member 610 is fixed to the bracket 300 by fasteners such as bolts or screws, and a avoidance space is provided on the bracket 300 corresponding to the speaker 620 so that there is a gap between the vibration module 621 of the speaker 620 and the bracket 300 to facilitate the vibration of the vibration membrane of the speaker 620.

[0067] See again Figure 5 and Figure 6In this embodiment, the vibration transmitter 700 is made of an iron material. One end of the vibration transmitter 700 is fixedly connected to the sound-generating substrate 120, and the other end is magnetically attached to the speaker 620. The vibration transmitter 700 is connected to the speaker 620 by magnetic attraction. When the display device is mounted on the wall 400, the vibration unit 600 is installed at a corresponding position on the hanger 300 or the wall 400, and then the display screen 100 is mounted on the hanger 300 or the wall 400. The vibration transmitter 700 and the vibration unit 600 are automatically connected to the speaker 620 by magnetic attraction, facilitating quick installation of the vibration transmitter 700 and the vibration unit 600.

[0068] The end of the vibration vibrator 700 facing the vibration unit 600 extends into the limiting groove 625 of the speaker 620 and is connected to the bracket 621 or the magnet 622. The setting of the limiting groove 625 not only effectively avoids the misalignment of the vibration vibrator 700 and the speaker 620 when the vibration unit 600 is installed, thereby ensuring the vibration transmission between the vibration vibrator 700 and the speaker 620, and effectively ensuring the stability of the sound of the display screen 100. At the same time, the cooperation between the vibration vibrator 700 and the limiting groove 625 facilitates the alignment of the vibration vibrator 700 and the limiting groove 625, so as to facilitate the alignment and cooperation of the vibration unit 600 and the display screen 100 when the display screen 100 is installed, thereby improving the speed and accuracy of installation.

[0069] In some embodiments, the vibration transmitting vibrator 700 is a magnet, and the polarity of the end of the vibration transmitting vibrator 700 facing the speaker 620 is opposite to the polarity of the magnet.

[0070] A buffer layer made of a cushioning material is provided between the vibration transmitting vibrator 700 and the vibration unit 600. In this embodiment, a buffer layer is provided between the vibration transmitting vibrator 700 and the speaker 620. When the vibration unit 600 vibrates, the buffer layer effectively prevents collisions between the vibration unit 600 and the vibration transmitting vibrator 700, thereby effectively avoiding interference from the sound generated by the collisions and protecting the vibration unit 600 and the vibration transmitting vibrator 700 from damage or wear due to the collisions.

[0071] Figure 9 It is a partial schematic diagram of the side view of an embodiment of a display device of the present invention.

[0072] See Figure 9 The sound-generating substrate 120 has a groove 121 corresponding to the speaker 620, and the vibration-transmitting vibrator 700 is connected to the groove 121. The groove 121 allows the display screen 100 to be placed closer to the wall 400, thereby reducing the installation space required for the display device. The provision of the groove 121 also increases the thickness of the sound-generating substrate 120 outside the groove 121, thereby enhancing the vibration of the sound-generating substrate 120.

[0073] Figure 10 A schematic diagram of the back structure of a display device according to an embodiment of the present invention.

[0074] See again Figure 5 and Figure 10 In this embodiment, the vibration unit 600 is used to drive the sound-emitting substrate 120 to emit bass. The display device also includes an exciter 200 disposed on the rear side of the sound-emitting substrate 120 and attached to the sound-emitting substrate 120; the exciter 200 is used to drive the sound-emitting substrate 120 to emit mid- and high-pitched sounds. The exciter 200 is disposed above the vibration unit 600, and two exciters 200 are symmetrically disposed in the width direction of the display device. The vibration unit 600 is located in the middle of the width direction of the sound-emitting substrate 120. The exciter 200 and the vibration unit 600 are staggered to fully utilize the space on the back of the sound-emitting substrate 120. The left-right symmetry of the two exciters 200 and the placement of the vibration unit 600 in the middle of the sound-emitting substrate 120 ensure that the sound transmitted to the front of the display device is balanced.

[0075] Figure 11 FIG. 1 is a schematic structural diagram of a multi-channel display device according to a first embodiment of the present invention.

[0076] See Figure 11 In this embodiment, the display device is equipped with four actuators S1 to S4, each of which plays a corresponding audio channel. S1 and S2 correspond to the left and right channels, respectively, while S3 and S4 correspond to the left and right overhead channels, respectively. The vibration unit 600 corresponds to the subwoofer.

[0077] Figure 12 FIG. 1 is a schematic structural diagram of a second embodiment of a multi-channel display device according to the present invention.

[0078] See Figure 12 In this embodiment, the display device is equipped with four actuators T1 to T6. Drivers T1 and T2 correspond to the left and right channels, respectively. Drivers T3 and T4 correspond to the left and right overhead sound channels, respectively. Drivers T5 and T6 correspond to the left and right surround sound channels, respectively. The vibration unit 600 corresponds to the subwoofer.

[0079] Figure 13 A schematic diagram of the back structure of another embodiment of a display device of the present invention.

[0080] See Figure 13, the display device is not provided with an exciter 200, and a plurality of vibration units 600 are provided on the rear side of the sound-emitting substrate 120, and the number of vibration transmitting vibrators 700 corresponds to the number of vibration units 600. In this embodiment, two vibration units 600 are provided, and the two vibration units 600 are symmetrically arranged in the up and down directions. The two vibration units 600 are respectively used to emit bass and mid-high tones, or the two vibration units 600 can both emit mid-high bass and mid-low tones. With the provision of two vibration units 600, there is no need to provide an exciter 200 on the display device. Compared with the combination of one vibration unit 600 and two exciters 200, the provision of two vibration units 600 reduces the number of sound-emitting units and saves costs.

[0081] Figure 14 FIG. 1 is a schematic structural diagram of a third embodiment of a multi-channel display device according to the present invention.

[0082] See Figure 14 In this embodiment, the display device does not include an actuator 200. The vibration unit 600 includes five vibration units Y1 to Y5 on the rear side of the sound-emitting substrate 120. Vibration units Y1 and Y2 correspond to the left and right channels, respectively. Vibration units Y3 and Y4 correspond to the left and right aerial tones, respectively. Vibration units Y5 and Y6 correspond to the left and right surround sound channels, respectively. Vibration unit Y7 corresponds to the subwoofer.

[0083] Figure 15 It is a partial schematic diagram of the side view of another embodiment of the display device of the present invention. Figure 16 FIG. 1 is a schematic structural diagram of the hanging bracket 300 in the display device of the present invention. Figure 17 FIG. 8 is a schematic structural diagram of a loudspeaker 800 according to an embodiment of a display device of the present invention.

[0084] See Figures 15 to 17 The display device further includes a loudspeaker 800 disposed on the rear side of the sound-emitting substrate 120. The loudspeaker 800 has an annular peripheral wall that gradually expands outward along its radial direction. This peripheral wall of the loudspeaker 800 forms a sound amplification cavity 810 with a gradually increasing inner diameter. The sound amplification cavity 810 extends through both ends of the loudspeaker 800.

[0085] The smaller end of the sound amplification cavity 810 corresponds to the driver 200 or vibration unit 600. The larger end of the sound amplification cavity 810 is located along the rear side of the sound-emitting substrate 120, facing the outside of the substrate 120, to expand the sound outward. Multiple speakers 800 are provided along the edge of the sound-emitting substrate 120, allowing the sound from the display device to propagate upward and left and right. The multiple speakers 800 are located corresponding to the driver 200 and vibration unit 600, respectively.

[0086] In this embodiment, the edge of the rear side of the sound-generating substrate 120 is provided with a slope corresponding to the loudspeaker 800 . The slope provides space for the loudspeaker 800 , facilitating the installation of the loudspeaker 800 between the sound-generating substrate 120 and the bracket 300 .

[0087] The loudspeaker 800 is mounted on the hanger 300. A mounting groove 310 is formed on one side of the hanger 300 facing the sound-generating substrate 120. The loudspeaker 800 is mounted within the mounting groove 310. The mounting groove 310 provides space for the loudspeaker 800 and facilitates alignment of the loudspeaker 800 on the hanger 300, facilitating proper installation of the loudspeaker 800. Flexible ethylene-vinyl acetate (EVA) is provided within the mounting groove 310. The loudspeaker 800 is connected to the EVA to facilitate mounting the loudspeaker 800 on the hanger 300. The hanger 300 also includes a wire management slot for routing the loudspeaker 800 and the vibration unit 600, facilitating the organization and convergence of various wires, thereby facilitating wire connection.

[0088] Figure 18 FIG. 1 is a schematic cross-sectional view of a second embodiment of a display device according to the present invention. Figure 19 yes Figure 18 Enlarged view of point B in the middle.

[0089] See Figure 18 and Figure 19 This embodiment provides a display device including a display screen 100, a vibration unit 600 disposed on the rear side of the display screen 100, and a vibration transmission vibrator 700 connected between the vibration unit 600 and the display screen 100. The display screen 100 is mounted on a wall 400 via a hanger 300, and the vibration unit 600 is fixedly connected to the hanger 300 or the wall 400. The vibration unit 600 is capable of generating vibrations, which are directly transmitted to the display screen 100 via the vibration transmission vibrator 700, causing the display screen 100 to vibrate and produce sound.

[0090] The display screen 100 includes a display structure 110 for displaying image information and a sound-generating substrate 120 attached to the rear side of the display structure 110. The sound-generating substrate 120 is a honeycomb panel that can vibrate and generate sound.

[0091] The vibration unit 600 is disposed on the rear side of the sound-generating substrate 120 and spaced apart from the sound-generating substrate 120. The vibration transmission vibrator 700 is connected between the vibration unit 600 and the sound-generating substrate 120. The vibration unit 600 is fixedly connected to the hanger 300 or the wall 400, and directly drives the sound-generating substrate 120 to vibrate via the vibration transmission vibrator 700. The force generated by the vibration of the vibration unit 600 is not used to reversely drive the vibration unit 600 relative to the sound-generating substrate 120. As a result, the force generated by the vibration of the vibration unit 600 is more used to drive the sound-generating substrate 120 to vibrate, thereby reducing energy loss and enhancing the vibration and sound of the display device.

[0092] Figure 20 2 is a schematic structural diagram of a vibration unit in a second embodiment of a display device according to the present invention.

[0093] See Figures 18 to 20 The vibration unit 600 includes a connector 610 fixed to the bracket 300 or the wall 400, and a speaker 620 connected to the connector 610; the speaker 620 vibrates to drive the connector 610 to vibrate, and the vibration transmitter 700 is connected to the connector 610 to transmit the vibration of the speaker 620 to the sound-emitting substrate 120 through the conducted vibration.

[0094] In this embodiment, the speaker 620 is not directly fixed to the sound-generating substrate 120. Instead, the gap between the sound-generating substrate 120 and the bracket 300 is utilized. The sound generator 620 is placed in this gap and fixed to the bracket 300, allowing the display device to produce sound using the speaker 620. The sound produced by the speaker 620 enables the display device to produce sound. The speaker 620 itself can vibrate to produce sound, and the speaker 620 can also drive the sound-generating substrate 120 to vibrate and produce sound. The superposition of the sound produced by the speaker 620 and the sound produced by the sound-generating substrate 120 enhances the sound produced by the display device.

[0095] The connecting member 610 includes a fixed portion 611 and a vibrating portion 612 flexibly connected to the fixed portion 611 on the side facing the sound-generating substrate 120; the fixed portion 611 and the vibrating portion 612 enclose a box-like structure with a hollow interior; the speaker 620 is connected to the fixed portion 611 and can drive the vibrating portion 612 to vibrate; the vibration transmitting vibrator 700 is connected to the vibrating portion 612, the speaker 620 drives the vibrating portion 612 to vibrate, and the vibrating portion 612 drives the sound-generating substrate 120 to vibrate and produce sound through the vibration transmitting vibrator 700.

[0096] A notch or an annular protrusion is provided on a surface of the vibration portion 612 facing the vibration transmitting vibrator 700 , and a limiting groove 613 is formed on a surface of the vibration portion 612 facing the vibration transmitting vibrator 700 .

[0097] In this embodiment, the vibrating portion 612 is made of a flexible material, such as leather or an elastic material. The flexible material is connected to the fixed portion 611, allowing the vibrating portion 612 to move relative to the fixed portion 611. An iron sheet or iron block is provided on the vibrating portion 612. The provision of the iron sheet or iron block allows the vibrating portion 612 to remain flat, facilitating connection with the vibration transmitter 700.

[0098] The shape of the vibration part 612 is circular, elliptical, runway-shaped, etc. In this embodiment, the vibration part 612 is circular. The circular vibration part 612 makes the force and vibration of the vibration part 612 uniform in all directions, thereby being able to transmit the vibration to the sound-emitting substrate more uniformly and stably.

[0099] Figure 21 2 is a schematic structural diagram of a speaker in a second embodiment of a display device according to the present invention.

[0100] In this embodiment, the specific structure of the speaker 620 refers to the structure of the speaker 620 in the first embodiment of the phase display device. Figure 21 Speaker 620 includes a bracket 621, a magnet 622 disposed within bracket 621, a frame 623 surrounding bracket 621, and a diaphragm 624. One end of frame 623 is connected to bracket 621. Diaphragm 624 is located within the enclosure of frame 623 and connected between the end of frame 623 facing away from bracket 621 and bracket 621. Frame 623 has a through-hole extending through its wall, and diaphragm 624 is used to vibrate and produce sound.

[0101] The connecting member 610 is a box-like structure with a hollow interior; the speaker 620 is embedded in the connecting member 610 and passes through the fixing portion 611 of the connecting member 610; the speaker 620 and the fixing portion 611 of the connecting member 610 are sealed and connected, and a closed space is formed between the interior of the connecting member 610 and the speaker 620; the two sides of the vibration membrane 624 of the speaker 620 are the internal space of the connecting member 610 and the external space of the connecting member 610, respectively, so that a closed space is formed on one side of the vibration membrane 624, and when the vibration membrane 624 vibrates, its vibration can be strengthened.

[0102] In this embodiment, the connecting member 610 is a box-type structure with a hollow interior; the basin frame 623 is embedded in the connecting member 610, and the outer side surface of the basin frame 623 is sealedly connected to the fixing part 611, and a closed space is formed between the connecting member 610 and the speaker 620, so that the two sides of the vibration membrane 624 contact the internal space of the connecting member 610 and the external space of the connecting member 610 respectively.

[0103] In this embodiment, speaker 620 is embedded within connector 610, forming a closed space between them. When speaker 620 vibrates in free space, the low-frequency sound waves emitted by the front and back surfaces of diaphragm 624 cancel each other out, creating an acoustic short circuit. Once speaker 620 is installed within connector 610, with the two sides of diaphragm 624 contacting the closed space inside connector 610 and the space outside connector 610, respectively, the sound emitted from the back surface of diaphragm 624 is confined within connector 610, eliminating the acoustic short circuit and enhancing the bass effect. Furthermore, based on the principle of conservation of momentum and the transmissibility of force, the momentum driving diaphragm 624 is equal to the momentum driving transducer 700. Furthermore, considering the stationary position of vibration unit 600 as the origin, diaphragm 624 and frame 623 simultaneously "expand" or "contract." This determines that the vibrations of the sound-generating substrate 120 and the vibration membrane 624 are in the same phase, that is, the bass sounds emitted by the sound-generating substrate 120 and the vibration membrane 624 are superimposed to enhance the overall bass effect.

[0104] In this embodiment, the diaphragm 624 is located at the end of the bracket 621 facing away from the vibrating portion 612. The diaphragm 624 and the vibrating portion 612 are spaced relative to each other, ensuring that the vibration direction of the diaphragm 624 is aligned with the vibration direction of the vibrating portion 612 relative to the fixed portion 611. This increases the vibration amplitude of the vibrating portion 612, thereby ensuring a sufficient force on the sound-emitting substrate 120. Furthermore, the vibration of the diaphragm 624 causes the air in the connecting member 610 to exert vertical pressure on the vibrating portion 612, thereby enhancing the vibration of the vibrating portion 612.

[0105] In some embodiments, the end of the bracket 621 of the speaker 620 that faces away from the vibration membrane 624 is connected to and abuts against the side of the fixed part 611 where the vibration part 612 is set, and is staggered with the vibration part 612 so that the speaker 620 will not interfere with the vibration of the vibration part 612.

[0106] Figure 22 2 is a schematic structural diagram of the front surface of the connecting member in the second embodiment of the display device of the present invention.

[0107] See Figure 22In this embodiment, multiple vibrating sections 612 are provided on the side of the fixed section 611 facing the sound-generating substrate 120, and multiple vibration-transmitting vibrators 700 are correspondingly provided on the sound-generating substrate 120. When multiple vibrating sections 612 are provided at different positions on the fixed section 611, when the connecting member 610 vibrates, the vibrating sections 612 at different positions have different vibration frequencies or amplitudes. Vibrating sections 612 with different frequencies and amplitudes act on the same sound-generating substrate 120 through the vibration-transmitting vibrators 700, thereby stimulating more vibration modes of the sound-generating substrate 120 through position adjustment. More vibration modes result in a more balanced frequency response curve and better sound quality, thereby enhancing the user experience.

[0108] In some embodiments, the plurality of vibration parts 612 may be configured to have different sizes and shapes to adjust more vibration modes.

[0109] In this embodiment, a speaker 620 and a plurality of vibration parts 612 are disposed in each connecting member 610 , and a single speaker 620 can excite more vibration modes.

[0110] See again Figures 18 to 22 In this embodiment, the vibration transmitting vibrator 700 is a magnet. One end of the vibration transmitting vibrator 700 is fixedly connected to the sound-generating substrate 120, and the other end is magnetically attached to the vibration unit 612. The vibration transmitting vibrator 700 is connected to the vibration unit 612 by magnetic attraction. When the display device is mounted on the wall 400, the vibration unit 600 is installed at a corresponding position on the hanger 300 or the wall 400, and then the display screen 100 is mounted on the hanger 300 or the wall 400. The vibration transmitting vibrator 700 and the vibration unit 600 are automatically connected to the vibration unit 612 by magnetic attraction, facilitating quick installation of the vibration transmitting vibrator 700 and the vibration unit 600.

[0111] In this embodiment, the columnar structure of the vibration-transmitting vibrator 700 is a magnet column, which is a stable and reliable structure, thereby ensuring the stability and reliability of the vibration-transmitting vibrator 700. In other embodiments, the ring-shaped structure of the vibration-transmitting vibrator 700 is a magnet ring, which makes the vibration-transmitting vibrator 700 lighter, reduces the loss of vibration energy in the vibration-transmitting vibrator 700, and increases the force acting on the sound-emitting substrate 120.

[0112] The end of the vibration vibrator 700 facing the vibration unit 600 extends into the limiting groove 613 of the connecting member 610 and is connected to the vibration part 612. The setting of the limiting groove 613 not only effectively avoids the misalignment of the vibration vibrator 700 and the vibration part 612 when the vibration unit 600 is installed, thereby ensuring the vibration transmission between the vibration vibrator 700 and the speaker 620, and effectively ensuring the stability of the sound of the display screen 100. At the same time, the cooperation between the vibration vibrator 700 and the limiting groove 613 facilitates the alignment of the vibration vibrator 700 and the limiting groove 613, so that when the display screen 100 is installed, the vibration unit 600 and the display screen 100 are aligned and coordinated, thereby improving the speed and accuracy of installation.

[0113] In some embodiments, the iron sheet or iron block on the vibration part 612 is replaced by a magnet, and the magnetism of the vibration vibrator 700 and the vibration part 612 attract each other, making the connection between the vibration part 612 and the vibration vibrator 700 more stable and reliable.

[0114] A buffer layer made of a cushioning material is provided between the vibration transmitting vibrator 700 and the vibration unit 600. In this embodiment, a buffer layer is provided between the vibration transmitting vibrator 700 and the vibrating portion 612. When the vibration unit 600 vibrates, the buffer layer effectively prevents impact between the vibration unit 600 and the vibration transmitting vibrator 700, thereby effectively avoiding interference from the sound generated by the impact. It also helps prevent damage or wear to the vibration unit 600 and the vibration transmitting vibrator 700 due to impact.

[0115] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are intended to be illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. All changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. A display device, characterized in that: include: A display structure for displaying image information; a sound-generating substrate, which is located at the rear side of the display structure; An exciter connected to the rear side of the sound-generating substrate and used to drive the sound-generating substrate to emit mid- and high-pitched sounds; A vibration unit for emitting bass; the vibration unit is disposed on the rear side of the sound-emitting substrate and is spaced apart from the sound-emitting substrate; the vibration unit comprises: Connectors, fixed to external racks or walls; a speaker connected to the connecting member and used to drive the connecting member to vibrate; The connecting piece includes: Fixed part; a vibrating portion connected to the side of the fixed portion facing the sound-generating substrate; the fixed portion and the vibrating portion together form a box-like structure with a hollow interior; The speaker is connected to the fixing portion and is capable of driving the vibration portion to vibrate; A vibration transmitting vibrator is connected between the sound-generating substrate and the connecting member. The vibration transmitting vibrator is connected to the vibration part to transmit the vibration of the vibration part to the sound-generating substrate, so that the sound-generating substrate vibrates and generates sound.

2. The display device according to claim 1, wherein The display device also includes a loudspeaker arranged on the rear side of the sound-emitting substrate, the loudspeaker forming a sound-emitting cavity with a gradually expanding inner diameter; the sound-emitting cavity passes through both ends of the loudspeaker, and the end of the sound-emitting cavity with a larger diameter is arranged along the rear side surface of the sound-emitting substrate toward the outside of the sound-emitting substrate.

3. The display device according to claim 2, wherein: The loudspeakers are provided in plurality and are respectively provided corresponding to the exciter and the vibration unit.

4. The display device according to claim 1, wherein The speaker is embedded in the connecting member, and the speaker passes through the fixing part; the speaker and the fixing part are sealed and connected, and a closed space is formed between the interior of the connecting member and the speaker; one end of the speaker has a vibration membrane for vibrating and making sound, and the two sides of the vibration membrane are the internal space of the connecting member and the external space of the connecting member respectively.

5. The display device according to claim 4, wherein: The speaker includes a bracket, a magnet arranged in the bracket, a basin surrounding the outer circumference of the bracket, and the vibration membrane; one end of the basin is connected to the bracket; the vibration membrane is located within the enclosed range of the basin and is connected between the end of the basin facing away from the bracket and the bracket; the basin is embedded in the connecting member, and the outer side surface of the basin is sealed to the fixing part, thereby forming a closed space between the connecting member and the speaker.

6. The display device according to claim 5, wherein: The vibration membrane is located at one end of the bracket away from the vibration part.

7. The display device according to claim 1, wherein A plurality of the vibration parts are provided on a side of the fixing part facing the sound-generating substrate, and a plurality of the vibration-transmitting vibrators are correspondingly provided on the sound-generating substrate.

8. The display device according to claim 1, wherein One end of the vibration transmitting vibrator is fixedly connected to the sound generating substrate, and the other end of the vibration transmitting vibrator is magnetically adsorbed on the vibration part.

9. The display device according to claim 1, wherein A limiting groove is provided on the vibration part corresponding to the vibration transmitting vibrator, and the vibration transmitting vibrator extends into the limiting groove and is connected to the vibration part.

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