24results about "Diaphragm extensions" patented technology

An audio transducer includes a diaphragm assembly. The diaphragm assembly can include a diaphragm, an attachment portion that circumferentially surrounds the diaphragm, and a flexible surround extending between the diaphragm and the attachment portion. The audio transducer can include a voice coil coupled to the diaphragm where the voice coil has a voice coil lead. The audio transducer can include a carrier that circumferentially surrounds the voice coil. The carrier can include an annular mounting surface, with the attachment portion of the diaphragm assembly being able to attach to the mounting surface, and a channel formed in the mounting surface. The voice coil lead can extend through the channel.

A through hole is formed in an inner-side yoke making up a magnetic circuit portion, passing therethrough following a vibration direction of a vibration unit, and circuit boards are disposed in the through hole. The circuit boards are disposed with board surfaces thereof following the vibration direction of the vibration unit. Also, an opening area of a middle space across which the circuit boards oppose each other is larger than opening areas of side spaces. Accordingly, flow quantity of air through the through hole can be obtained, increase in air resistance at the time of vibration of the vibration unit can be suppressed, and also wind velocity can be obtained, whereby cooling effects of heat-generating components mounted on the circuit boards can be improved.

An apparatus is described which comprises a substrate having a through opening and a membrane over the through opening. In at least one example, the apparatus comprises a first beam coupled between a first side of the membrane and the substrate, the first beam including a first stress sensor. In at least one example, the apparatus further comprises a second beam coupled between a second side of the membrane and the substrate, the second side opposing the first side, and the second beam including a second stress sensor.

Embodiments of the present invention relate to the technical field of semiconductor devices and disclose a MEMS microphone and a method for preparing the same. In the disclosure, the substrate is provided with at least one chamfer at an inner edge of a side of the substrate close to the diaphragm, so that when the diaphragm is bent towards the substrate due to vibration, providing the chamfer can prevent the diaphragm from hitting the substrate, or increase the contact area between the diaphragm and the substrate when the diaphragm hits the substrate, avoiding the concentration of stress and thus reducing the risk of the diaphragm breaking. In this way, the probability of failure of the MEMS microphone due to breakage of the diaphragm can be reduced, and the robustness of the MEMS microphone can be enhanced.

The present application provides a speaker, which comprises a housing as well as a magnetic circuit system and a vibration system arranged the housing, the vibration system comprises a planar first voice coil which can generate mechanical motion under the action of a magnetic field of the magnetic circuit system, a planar first vibration diaphragm driven by the first voice coil, and the first voice coil is arranged on the first vibration diaphragm; the magnetic circuit system comprises a plurality of magnets, a gap is formed between the magnets, and at least a portion of the first voice coil corresponds to the gap between the magnets. The present speaker is different from a conventional moving-coil type speaker, and the speaker can be made smaller than a conventional moving-coil type speaker and with respect to high frequency performance, the speaker has higher sound pressure and a better bandwidth.

A non-planar body (1) comprising a dome body (2) having an apex (3) and an outer periphery, the apex (3) located on a first plane (4) and the outer periphery located on a second plane (6) substantially parallel to the first plane (4). A peripheral body (5) extends at least partially around the outer periphery of the dome body (2), and at an angle (7) of less than 180° with respect to a tangent (8) relative to the dome body (2) at the outer periphery of the dome body (2), the angle (7) being measured at an outer surface of the dome body (2). Any of the dome body (2) and the peripheral body are formed from polycrystalline diamond.

The embodiment of the application belongs to the technical field of electronic equipment, and particularly relates to a loudspeaker and an electronic device. The embodiment of the application aims to solve the technical problem that the electromagnetic driving force for driving the vibration of the voice coil is small, so that the sensitivity of the loudspeaker is insufficient. The loudspeaker and the electronic device of the embodiment of the application, the yoke iron comprises a bottom and a sleeve pipe located at one side of the bottom, a ring-shaped magnet is sleeved outside the sleeve pipe, the voice coil is sleeved on the sleeve pipe and located between the magnet and the sleeve pipe; the elastic wave is located in the area enclosed by the sleeve pipe, the outer edge of the elastic wave is connected with the voice coil, and the middle part of the elastic wave is connected with the yoke iron; the magnet and the voice coil are both located outside the elastic wave, the volume of the magnet and the length of the coil in the voice coil are not affected by the elastic wave, so that the volume of the magnet and the length of the coil in the voice coil can be set to be larger, and then the electromagnetic driving force for driving the vibration of the voice coil is increased, and the sensitivity of the loudspeaker is improved.

A speaker includes a housing, a vibration component, and a magnetic circuit component. The housing has an inner cavity The magnetic circuit component is disposed in the inner cavity The magnetic circuit component has a magnetic gap. The vibration component includes a first diaphragm a second diaphragm and a voice coil. The first diaphragm and the second diaphragm are respectively located on two opposite sides of the magnetic circuit component. Circumferential edges of the first diaphragm and the second diaphragm are connected to the housing. The voice coil is located inside the magnetic gap and two opposite sides of the voice coil are respectively connected to the first diaphragm and the second diaphragm.

The application discloses a vibrating diaphragm for a sound production device, a sound production device and an electronic device. The vibrating diaphragm comprises a butadiene styrene rubber layer, the butadiene styrene rubber layer is prepared from a blended material, the blended material comprises a first butadiene styrene copolymer and a second butadiene styrene copolymer, the mass percentage of styrene in the first butadiene styrene copolymer is 8% to 12%, the mass percentage of styrene in the second butadiene styrene copolymer is 40% to 50%, and the mass percentage of the first butadiene styrene copolymer in the blended material is 50% to 80%; and the glass transition temperature of the butadiene styrene rubber layer is -40 DEG C to 0 DEG C. The blended material of the application comprises the first butadiene styrene copolymer with a low glass transition temperature and the second butadiene styrene copolymer with a high glass transition temperature, and in this way, the damping temperature range of the butadiene styrene rubber layer can be effectively widened, so that the vibrating diaphragm has a high loss factor in the temperature range of -60 DEG C to 20 DEG C.

A semiconductor structure includes a substrate having a cavity thereon; a membrane suspended above the cavity and anchored to the substrate, wherein the membrane comprises a central region, a peripheral suspension region, and a coil region between the central region and the peripheral suspension region; and a coil embedded in the coil region of the membrane, wherein the peripheral suspension region has a first concave portion and a first convex portion.

The invention discloses a semiconductor structure and a manufacturing method thereof, and the semiconductor structure comprises a substrate which is provided with a cavity; the diaphragm is suspended above the cavity and anchored to the substrate, and the diaphragm comprises a central area, a peripheral dangling edge area and a coil area located between the central area and the peripheral dangling edge area; the coil is embedded in the coil area of the diaphragm, and the peripheral dangling edge area is provided with a first concave part and a first convex part.

Embodiments of the present invention relate to the technical field of semiconductor devices. Disclosed are a MEMS microphone and a manufacturing method therefor. The MEMS microphone comprises: a substrate, which defines a cavity; anchoring members provided on the substrate; and a diaphragm provided with beam structures, wherein the beam structures are fixed on the anchoring members, such that the diaphragm covers the cavity and is spaced apart from the substrate, and inner edges of the side of the substrate close to the diaphragm is provided with chamfers. In the present invention, the inner edges of the side of the substrate close to the diaphragm are provided with chamfers, and when the diaphragm bends towards the substrate side due to vibration, the provision of the chamfers can prevent the diaphragm from colliding with the substrate, or increase the contact area between the diaphragm and the substrate when the diaphragm collides with the substrate, thereby avoiding stress concentration, reducing the risk of damage to the diaphragm. In this way, the probability of failure of the MEMS microphone due to damage to the diaphragm can be reduced, and the robustness of the MEMS microphone can be enhanced.

A transducer element comprises an enclosure with a multi-walled frame, walls, and a planar diaphragm. The diaphragm is configured to generally move orthogonally with respect to the directly coupled pressure wave propagation, and it bisects the depth of the enclosure to form two independent acoustic chambers. The enclosure includes lids with ports, at least one port for each chamber. The lids are substantially perpendicular to the diaphragm and separated by the depth of the enclosure. The transducer element may be part of a transducer that utilizes multiple elements with similar designs to produce higher volume displacement, allowing for higher SPL output when used in loudspeaker applications. Additional planar diaphragms may also be present in each transducer element.

Embodiments of this application relate to the field of electronic device technologies, and in particular, to a loudspeaker and an electronic device. Embodiments of this application are provided to resolve a technical problem of insufficient sensitivity of a loudspeaker caused by a small electromagnetic driving force that drives a voice coil to vibrate. According to a loudspeaker and an electronic device in embodiments of this application, a yoke includes a bottom part and a sleeve located on the side of the bottom part. An annular magnet is sleeved on the outer side of the sleeve. A voice coil is sleeved on the sleeve and located between the magnet and the sleeve. A damper is located in a region enclosed by the sleeve. An outer edge of the damper is connected to the voice coil, and a middle part of the damper is connected to the yoke. Both the magnet and the voice coil are located on an outer side of the damper, so that the volume of the magnet and the length of a coil in the voice coil are not affected by the damper. The volume of the magnet and the length of the coil in the voice coil can be set to be larger, so that an electromagnetic driving force that drives the voice coil to vibrate is increased, and sensitivity of the loudspeaker is improved.

The invention relates to a MEMS transducer for interacting with a volume flow of a fluid, comprising a lamella assembly which is connected to a support frame (2) at least on one side and which has a first section (5; 5 '; 51; 53) and at least one second section (6; 53) arranged between the support frame (2) and the first section; 61, 62; 63). In this case, the at least one second section is U-shaped in cross section with respect to the first direction (x-direction), and a wall section of the second section extending in a second direction (y-direction) transverse to the first direction (x-direction) can be excited to oscillate substantially in the first direction (x-direction). In this case, the first section and the at least one second section have an active material, and the lamella assembly is connected to at least one electrode (42) by means of which the lamella assembly can be excited for vibration by means of an electrical signal or by means of which an electrical signal generated as a result of vibration of the lamella assembly can be captured. Furthermore, the first section has a mass element (12; 121, 121; 44; 48); 77) and can be excited to vibrate substantially in a second direction (y-direction). The invention also relates to a method for producing such a MEMS transducer.

The loudspeaker voice coil diaphragm structure provided by the invention has the characteristics that the diaphragm is laminated after being formed in a split manner, and the voice coil framework and the diaphragm are integrally formed, and the complete diaphragm is decomposed into at least two separated diaphragms for forming, so that the requirement on the ductility of a single material is effectively reduced, the process problem of large-angle stretching is avoided, and the production efficiency is improved. A reinforcing structure is naturally formed at the fitting part; the voice coil framework and the vibrating diaphragm body are integrally formed, so that a glue bonding interface is eliminated, the connection reliability and the structural strength are improved, and the vibration quality is reduced; by designing the specific included angle between the skeleton and the neck of the vibrating diaphragm, the vibrating diaphragm assembly with the integrated skeleton is ensured to be smooth and accurate in signal transmission motion in a magnetic circuit. According to the structure, many performance and reliability bottlenecks caused by difficult material forming and a bonding process in a traditional design are fundamentally overcome, and the power bearing capacity, the acoustic performance and the long-term stability of the loudspeaker are remarkably improved.

The invention discloses a MEMS transducer (1; 11; 100; 101; 103; 105; 107; 109; 110; 111) for interacting with a volume flow of a fluid with a lamella arrangement (3; 30; 31; 33; 35; 37; 39) connected at least on one side to a support frame (2) with a first section (5; 5'; 51; 53) extending in a first direction (x-direction) and with at least one second section (6; 61, 62; 63) provided between the support frame (2) and the first section (5; 5'; 51; 53). In this case, at least one second section (6; 61, 62; 63) has a U-shaped cross-section with respect to the first direction (x-direction). Wall sections of the second section (6; 61, 62; 63) extending in a second direction (y-direction) that runs perpendicular to the first direction (x-direction) are capable of being excited to vibrations essentially in the first direction (x-direction).The first (5; 5'; 51; 53) and at least one second section (6; 61, 62; 63) comprise an active material, the lamella arrangement (3; 30; 31; 33; 35; 37; 39) is connected to at least one electrode (42) via which the lamella arrangement (3; 30; 31; 33; 35; 37; 39) can be excited to vibrations via an electrical signal or via which an electrical signal resulting from a vibration of the lamella arrangement (3; 30; 31; 33; 35; 37; 39) can be detected. Furthermore, the first section (5; 5'; 51; 53) has a mass element (12; 121; 44; 48; 77) and can be excited to vibrations essentially in the second direction (y-direction). The invention also describes a method for manufacturing such a MEMS transducer.

A hybrid diaphragm structure (200) is provided. The hybrid diaphragm structure (200) includes a substrate (110), a first diaphragm (152) disposed in a central region of the substrate, a first coil structure (154) disposed over the first diaphragm, a first groove (160) separating the first diaphragm and the first coil structure from the substrate, and a first bridge structure (170) coupling the first diaphragm to the substrate. The first diaphragm (152) and the substrate (110) include a same material.

The invention discloses a vibrating diaphragm, a loudspeaker and a vehicle, and relates to the technical field of loudspeakers. The vibrating diaphragm comprises a silicon carbide base material layer and a polymer coating sprayed on the surface of the silicon carbide base material layer, and is of a two-layer or three-layer composite structure. The two-layer structure is formed by compositing a silicon carbide base material layer and a polymer coating, and the three-layer structure is formed by compositing polymer coatings on the two sides of the silicon carbide base material layer respectively. The high-frequency performance of the vibrating diaphragm is improved through the high elastic modulus characteristic of the silicon carbide base material layer, the high-frequency effective bandwidth extends to 30 kHz, the frequency response is stable, the brittleness of silicon carbide is improved by means of the polymer coating, and the reliability is improved; the structure of the ketone body and the folding ring is optimized to further guarantee acoustic performance and assembly stability. The loudspeaker comprising the diaphragm is excellent in acoustic performance, can optimize a vehicle-mounted sound field when being applied to a vehicle, and improves the driving hearing experience. The problems of insufficient high frequency, contradiction between strength and toughness and the like of the existing diaphragm are solved, and the requirements of high-end sound equipment and vehicle-mounted scenes are met.

The present application relates to the technical field of electro-acoustic conversion, and discloses a diaphragm for a sound emitting device, a sound emitting device and electronic equipment. The diaphragm comprises at least one thermoplastic polyurethane elastomer layer; the thermoplastic polyurethane elastomer layer is prepared from a blended material, the blended material comprising a first thermoplastic polyurethane elastomer and a second thermoplastic polyurethane elastomer; the glass transition temperature of the first thermoplastic polyurethane elastomer is -60 to -30 DEG C, and the glass transition temperature of the second thermoplastic polyurethane elastomer is -25 to 10 DEG C; and the 5-minute creep recovery rate of the thermoplastic polyurethane elastomer layer is 60% to 98%. Since the thermoplastic polyurethane elastomer layer comprises thermoplastic polyurethane elastomers with different glass transition temperatures, the damping temperature range of the diaphragm can be effectively expanded, and the diaphragm can maintain good damping in a wider frequency range within a wider use temperature range.

A bass loudspeaker system including: a housing; a first and second diaphragm; a first and second drive unit, each drive unit including a stationary part and a translatable part. The translatable part of the first drive unit is attached to the first diaphragm to form a first moving assembly suspended by a first surround and a first damper, and the translatable part of the second drive unit is attached to the second diaphragm to form a second moving assembly suspended by a second surround and a second damper. The system energises the drive units to cause the first and second moving assemblies to move along a movement axis in opposite directions to produce sound. The first surround includes an outside tab, an inside tab, and a surround body between the outside and inside tabs. The second surround includes an outside tab, an inside tab, and a surround body between the outside tab and the inside tab. The first damper-includes an outside tab attached to the housing, an inside tab attached to the first moving assembly and a damper body between the outside tab and the inside tab. The second damper includes an outside tab attached to the housing, an inside tab attached to the second moving assembly and a damper body between the outside tab and the inside tab. The width of the damper body of the first damper as measured in a direction of measurement perpendicular to the movement axis is greater than the width of the surround body of the first surround in said direction of measurement. The width of the damper body of the second damper as measured in said direction of measurement is greater than the width of the surround body of the second surround in said direction of measurement.

The loudspeaker voice coil diaphragm structure provided by the invention has the characteristics that the diaphragm is laminated after being formed in a split manner, and the voice coil framework and the diaphragm are integrally formed, and the complete diaphragm is decomposed into at least two separated diaphragms for forming, so that the requirement on the ductility of a single material is effectively reduced, the process problem of large-angle stretching is avoided, and the production efficiency is improved. A reinforcing structure is naturally formed at the fitting part; the voice coil framework and the vibrating diaphragm body are integrally formed, so that a glue bonding interface is eliminated, the connection reliability and the structural strength are improved, and the vibration quality is reduced; by designing the specific included angle between the skeleton and the neck of the vibrating diaphragm, the vibrating diaphragm assembly with the integrated skeleton is ensured to be smooth and accurate in signal transmission motion in a magnetic circuit. According to the structure, many performance and reliability bottlenecks caused by difficult material forming and a bonding process in a traditional design are fundamentally overcome, and the power bearing capacity, the acoustic performance and the long-term stability of the loudspeaker are remarkably improved.

A loudspeaker device includes first and second diaphragms arranged co-axially in an opposed relation to each other and having a rear volume in-between, each diaphragm having a plurality of motors operatively coupled thereto, and a frame having first and second ends, and first and second rims provided at the first and second ends, respectively. The motors of the first and second diaphragms are arranged in the same plane, and the motors are provided on the frame around the periphery of the first and second diaphragms.

To improve a high sound characteristic of a speaker.SOLUTION: A sub diaphragm 150 is the sub diaphragm 150 used for a speaker 100, and comprises: an inclination part 152 in which an open area is increased toward a discharge direction of a sound of the speaker 100; and an annular edge part 153 that linearly extends toward an outer side along a direction orthogonal to the discharge direction from a tip end edge of the inclination part 152.SELECTED DRAWING: Figure 1