67results about "Diaphragm materials" patented technology

A display apparatus includes a display module including a display panel configured to display an image and a sound generating module on a rear surface of the display panel, the sound generating module includes a vibration generating device, a circuit board on a lower surface of the vibration generating device, a first adhesive member between the circuit board and the vibration generating device, and a second adhesive member between the vibration generating device and the display panel, an elastic modulus of the second adhesive member differing from an elastic modulus of the first adhesive member.

The present invention relates to the technical field of acoustic-electric conversion, and provides a piezoelectric MEMS microphone, including: a base with a cavity back and a piezoelectric diaphragm, the piezoelectric diaphragm includes a suspension part and a base fixing part connected to the base, The piezoelectric diaphragm also includes a support part connecting the fixed part of the base and the suspension part, and the suspension part is suspended above the back cavity through the support part. The piezoelectric MEMS microphone also includes a limit structure, and the suspension part includes a position-limiting structure. The middle film overlaps with the projection range along the vibration direction, and the limiting structure and the middle film form a fixed structure of the piezoelectric diaphragm. After the piezoelectric diaphragm is released from the oxide layer, under the action of the residual stress in the piezoelectric diaphragm, the middle film deforms upwards or downwards and connects with the corresponding limiting structure to completely release the stress and gradient stress. The application of the technical solution solves the technical problem in the prior art that the diaphragm is deformed due to uneven stress distribution in the process of processing, which further affects the consistency of performance such as the sensitivity of the microphone.

The invention discloses a sounder and an electronic product comprising the sounder. The sounder comprises a shell; a magnetic circuit system positioned in the shell; wherein the magnetic circuit system comprises a side magnetic part and a central magnetic part; the central magnetic part comprises a support plate located in the middle. The sounder also comprises two central magnets positioned on two sides of the supporting plate. Central magnetic parts are of central hollow structures. The sounder also comprises two groups of vibration assemblies positioned on two sides of the support plate; each group of vibration assembly comprises a vibrating diaphragm and a voice coil; the sounder further comprises a centering structure located on the inner side of the central hollowed-out edge of thecentral magnetic part, the centering structure comprises two annular frameworks which are fixedly connected to the central parts of the two vibrating diaphragms, the adjacent ends of the two annular frameworks are fixedly connected with elastic supporting pieces, and the outer side edges of the elastic supporting pieces are fixedly connected to the central magnetic part of the hollowed-out edge. Polarization generated when double vibrating diaphragms in the bidirectional sounder structure vibrate can be reduced, product distortion is reduced, and product performance and stability are improved.

The invention provides a vibrating diaphragm assembly forming method of a sound production device, and the vibrating diaphragm assembly comprises a vibrating diaphragm body and an auxiliary assembly.The method comprises the steps: providing a forming die, and an inner cavity of the forming die being provided with an inner cavity surface; providing an auxiliary assembly, wherein the surface of theauxiliary assembly is provided with a micro-nano structure; the auxiliary assembly being arranged in a forming mold, and the surface, provided with the micro-nano structure, of the auxiliary assemblyand the inner cavity surface forming a forming surface used for forming the vibrating diaphragm body; filling an inner cavity of the forming mold with a vibrating diaphragm body material, manufacturing a vibrating diaphragm body, and the surface, provided with the micro-nano structure, of the auxiliary assembly being connected with the vibrating diaphragm body; and demolding the vibrating diaphragm body and the auxiliary assembly. The invention further provides a vibrating diaphragm assembly formed by using the forming method and a sound production single body with the vibrating diaphragm assembly. The vibrating diaphragm assembly obtained through the forming method of the vibrating diaphragm assembly has high strength and small deformation shrinkage amount, and the assembled sound production single body has good waterproof sealing performance and excellent acoustic performance.

One embodiment of the present specification discloses an apparatus comprising: a housing comprising an interior space; a plurality of first daughter boards disposed in the internal space; a plurality of first vibration elements respectively disposed on one of the plurality of first sub-plates; and a vibration member disposed on the plurality of first sub-plates and the plurality of first vibration elements, in which the plurality of first sub-plates have one side connected to the housing and the other side connected to the vibration member.

A sound apparatus includes a vibration member having a plate shape; and a first vibration device, a plurality of second vibration devices, and a third vibration device configured to each have a plate shape including a first main surface and a second main surface opposite to each other and configured to vibrate based on a driving signal input thereto. The first main surface of the first vibration device may be connected to the vibration member, a portion of the second main surface of the first vibration device and a portion of the first main surface of the third vibration device may be connected to each other by an elastic member so that the first main surface of the third vibration device is spaced apart from and opposite to the second main surface of the first vibration device by a certain distance. A portion of each of the plurality of second vibration devices may be connected to a portion of the third vibration device and a portion of the first main surface of each of the plurality of second vibration devices may be connected to a portion of the vibration member by an elastic member, so that the plurality of second vibration devices extend radially from the third vibration device in a plane. A driving signal input to the first vibration device may have a phase opposite to a phase of a driving signal input to the third vibration device.

A vibration generating module, a sound apparatus comprising the same, and a vehicular apparatus are provided. The vibration generating module comprises a vibration member; a pad portion on a first surface of the vibration member; a first vibration apparatus on the first surface of the vibration member and connected to the pad portion; and a second vibration apparatus on a second surface opposite to the first surface of the vibration member and connected to the pad portion. Accordingly, the vibration generating module, the sound apparatus comprising the same and the vehicular apparatus may have improved sound characteristics and / or improved sound pressure characteristics.

The invention provides a net charge generating device and an electron generator used for the net charge generating device, and also provides a vibrating diaphragm used in an electrostatic loudspeaker.In the prior art, electrostatic charges required by a vibrating diaphragm of an electrostatic loudspeaker are injected through a high-voltage direct-current power supply, and the high-voltage direct-current power supply is large in size, so that the electrostatic loudspeaker is not suitable for being used on portable electronic equipment, which is a defect of the electrostatic loudspeaker. The invention provides a net charge generation device to replace a high-voltage direct-current power supply in an electrostatic loudspeaker in the prior art. The net charge generating device is simple in structure and convenient to miniaturize, so that the size of the electrostatic loudspeaker designed by the net charge generating device is greatly reduced, and the using requirements of miniaturization,lightness and thinness of the electrostatic loudspeaker in mobile portable equipment can be met.

The invention discloses a drum paper assembling method. The drum paper assembling method comprises the following steps that S1, a vibration ring material is cut into an annular body, and an annular material is obtained; s2, pasting the annular material to the outer edge of a drum paper carcass to obtain a combined body; s3, positioning the assembly by using the center of the drum paper carcass, and forming the annular material of the assembly to obtain a semi-finished product; and S4, the edge of the semi-finished product is punched, and a finished product is obtained. According to the drum paper assembling method, the carcass can be grabbed for forming, damage to the vibrating ring is avoided, the production progress and the machining precision are guaranteed, and the product yield is increased.

A method, system and devices to selectively control modal vibrations in an elastic panel with a number of force actuators distributed throughout the surface of the elastic panel to excite / depress the response of one or more vibrational resonant modes included in a prescribed subset. The force actuators are disposed such that prescribed modal excitation / depression may be realized when the actuators are driven by a common source signal.

A sound control system comprises a sound generating device disposed at a vehicle ceiling corresponding to a seat region of the vehicle and disposed at a sound space formed within the vehicle to correspond to the seat region, and a sound processing circuit for providing a vibration driving signal to the sound generating device, the sound generating device vibrates based on the vibration driving signal to vibrate a vibration region of the vehicle ceiling corresponding to the sound space to provide a sound to the sound space.

The invention relates to the technical field of electroacoustic conversion, in particular to a high-foam embedded voice diaphragm and a loudspeaker. The invention comprises a frame body which comprises a high-foam folding ring part with a cavity in the middle, an attaching part connected to the outer ring of the high-foam folding ring part and a pressing and folding part connected to the inner ring of the high-foam folding ring part. A spherical top is arranged in a cavity in the middle of the high-foam folding ring part and embedded in the pressing and folding part, a spherical surface part protruding upwards or downwards to form an arc surface is arranged on the spherical top, auxiliary spherical surface parts protruding upwards or downwards to form arc surfaces are further arranged on the spherical top on the two sides of the spherical surface part, and the total height of the voice diaphragm is larger than the adjusting space of an original scheme. The strength of the globe roof isimproved by about 30-40% compared with that of the original scheme; the up-and-down amplitude of the loudspeaker is increased by 0.1-0.15 mm compared with the original scheme; and the high-frequencycurve of the loudspeaker is smoother than that of the original scheme without attenuation.

An object of the present invention is to provide a waterproof speaker with a waterproof rating of 8 or above, which can provide a waterproof function under high water pressure. The present invention provides a high water pressure waterproof loudspeaker, which has a frame and a vibrating part inside the frame. a diaphragm inside the frame; and a waterproof ring placed on a side wall of the frame and configured to protrude outwardly from the flange portion of the frame.

The invention discloses a drum paper carcass production method. The drum paper carcass production method comprises the following steps: S1, mixing a fiber material with water, and crushing the fiber material to form fiber slurry; s2, the fiber slurry is quantitatively taken out and formed, and an initial pressing piece is formed; s3, the initial pressing piece is soaked in pigment liquid for second preset time, and the initial pressing piece with pigment is formed; s4, water of the initial pressing piece with the pigment is pumped out, and a semi-finished product is formed; and S5, the semi-finished product is subjected to hot press molding, and a primary finished product is formed. According to the drum paper carcass production method, materials can be continuously supplied, pigments and chemical agents do not need to be added, the drum paper carcass production method is environmentally friendly, the water treatment cost and the cost of water resources and fiber material resources are greatly saved, the concentration of fiber pulp in each batch is consistent, and the consistency and the yield of products are guaranteed.

The invention relates to a MEMS transducer, a transducer unit (2) for the MEMS transducer, and a manufacturing method for the latter. The transducer unit comprises a carrier (4), at least one transducer element (5) connected to the carrier (4) and deflectable along a stroke axis (H), a coupling element (13) for connecting the transducer element (5) to a diaphragm (3) spaced apart from the transducer element (5) and movable along the stroke axis (H), and a spring section (14) formed between the transducer element (5) and the coupling element (13), which has at least one spring element (15, 30) that movably connects the transducer element (5) to the coupling element (13), and which has a damping layer (31) that at least partially covers the spring element (15, 30). According to the invention, the damping layer (31) is formed from a cured adhesive (32).

A loudspeaker for producing sound at bass frequencies including: a diaphragm; a frame, wherein a proximal end of the diaphragm is suspended from the frame by at least one proximal suspension element, wherein the at least one proximal suspension element is configured to substantially prevent translational movement of the proximal end of the diaphragm relative to the frame, whilst permitting translational movement of a distal end of the diaphragm which is opposite to the proximal end of the diaphragm; a drive unit configured to move the distal end of the diaphragm based on an electrical signal.

To provide an acoustic device that improves acoustic characteristics and / or sound pressure characteristics, and a transportation device including the same.SOLUTION: An acoustic device 30 includes an acoustic generating module 330 including a vibrating member 331 and vibrating devices 333, 335 configured on the vibrating member, and an enclosure 310 connected to the vibrating member by a coupling member 320 across an internal space 313, with a portion of the vibrating device housed in the vibrating member.SELECTED DRAWING: Figure 3

A display device including a display panel, a sound generator disposed on one surface of the display panel, and a porous layer disposed adjacent to the sound generator, in which the porous layer includes a first coupling layer, a second coupling layer, and an intermediate layer interposed between the first and second coupling layers and including a plurality of air pockets, and the first coupling layer and the intermediate layer do not overlap the sound generator in a thickness direction of the display panel.

The invention discloses a sensitive film, an MEMS microphone and a manufacturing method thereof, and the sensitive film comprises: a sensing part which is used for sensing a vibration signal; a connecting part which is arranged around the sensing part and is used for fixing the sensing part; an action part which is connected with the sensing part and the connecting part, wherein the rigidity of the action part is smaller than that of the sensing part and / or that of the connecting part; and a reinforcing part, wherein the reinforcing part is arranged on the action part. According to the technical scheme, the structural strength of the sensitive film is improved, and the probability that the sensitive film is broken and fails is reduced.

The invention relates to the technical field of acoustoelectric conversion and provides a piezoelectric MEMS microphone. The piezoelectric MEMS microphone comprises a substrate with a back cavity anda piezoelectric vibrating diaphragm, the piezoelectric vibrating diaphragm comprises a suspension part and a substrate fixing part connected with the substrate; the piezoelectric vibrating diaphragm further comprises a supporting part connected with the substrate fixing part and the suspension part, the suspension part is suspended above the back cavity through the supporting part; the piezoelectric MEMS microphone further comprises a limiting structure, the suspension part comprises a middle film overlapped with the projection range of the limiting structure in the vibration direction, and the limiting structure and the middle film form a fixing structure of the piezoelectric vibrating diaphragm. After the oxide layer of the piezoelectric vibrating diaphragm is released, the middle diaphragm deforms upwards or downwards under the action of residual stress in the piezoelectric vibrating diaphragm and is connected with the corresponding limiting structure so as to completely release stress and gradient stress. By applying the technical scheme, the technical problem that in the prior art, due to uneven stress distribution in the machining process, deformation of the diaphragm is notuniform, and then consistency of performance such as sensitivity of the microphone is affected is solved.

A display device including a display panel, a sound generator disposed on one surface of the display panel, and a porous layer disposed adjacent to the sound generator, in which the porous layer includes a first coupling layer, a second coupling layer, and an intermediate layer interposed between the first and second coupling layers and including a plurality of air pockets, and the first coupling layer and the intermediate layer do not overlap the sound generator in a thickness direction of the display panel.

The display device comprises: a display panel; a sound generator under the display panel; a frame disposed under the display panel and the sound generator; and a porous layer disposed adjacent to the sound generator between the display panel and the frame and having a plurality of air pockets, wherein the porous layer has a porosity of about 90% or more.

The invention provides a frequency response adjustable miniature sound pressure amplification structure which comprises a shell (1), a plurality of primary sensitive membranes (2), a plurality of connecting rods (3), a plurality of secondary sensitive membranes (4) and a terminal sensitive membrane (5), and the shell is of a rigid structure and comprises two cavity structures; the plurality of primary sensitive membranes are used as receiving ends of sound pressure signals and are fixed on the upper surface frame of the shell (1) to form a first boundary condition of peripheral fixed support; the plurality of connecting rods are respectively connected with the centers of the plurality of primary sensitive membranes and the plurality of secondary sensitive membranes, so that the primary sensitive membranes and the secondary sensitive membranes move together under the action of sound pressure; the plurality of primary sensitive membranes, the plurality of secondary sensitive membranes and the shell jointly form a first sealing cavity; a plurality of secondary sensitive membranes are fixed on the frame in the shell to form the second boundary condition of the peripheral fixed support, and form the second sealing cavity with the terminal sensitive membrane and the shell; and the terminal sensitive membranes serving as the amplification end of thea sound pressure signal is fixed on the lower surface of the shell to form a third boundary condition of the peripheral fixed support.

To provide a sound apparatus which can enhance a sound characteristic and / or a sound pressure characteristic, and transportation equipment including such a sound apparatus.SOLUTION: A sound apparatus 30 according to one or more embodiments of the present specification includes: a sound generating module 330 including a vibration member 331 and a vibration apparatus 333 configured at the vibration member; an enclosure 310 connected to the vibration member with an internal space therebetween; and a connection member 380 connected to the enclosure. The connection member includes a first portion and a second portion having different thicknesses from each other. The second portion is a periphery portion of the enclosure, and a portion or region between an interior material 130 and the periphery portion of the enclosure. The first portion is the other portion, except the periphery portion, of the enclosure, and includes an opening hole 380o connected to the internal space 313 of the enclosure. The thickness T1+T2 of the second portion is thicker than the thickness T1 of the first portion.SELECTED DRAWING: Figure 43