The present application discloses a display panel and a display device including the display panel. The display panel includes a display panel body, a magnet structure and a drive membrane. The drive membrane is located on the display panel body, and the magnet structure is located on a side of the drive membrane facing away from the display panel body. One or more conductive traces are arranged within the drive membrane, and the magnet structure is configured for generating a magnetic field. The drive membrane is configured to deform under an interaction between the magnetic field and a modulation current applied onto the one or more conductive traces, thereby driving the display panel body to vibrate and produce sounds.

A transducer assembly comprising: a magnet motor assembly comprising a first magnet plate and a second magnet plate arranged along an axis, a first support plate positioned between inward facing surfaces of the first magnet plate and the second magnet plate, a second support plate positioned along an outward facing surface of the first magnet plate to form a first magnetic gap between the first support plate and the second support plate, and a third support plate positioned along an outward facing surface of the second magnet plate to form a second magnetic gap between the first support plate and the third support plate; a voice coil coupled to the magnet motor assembly, wherein the voice coil is positioned around the first support plate and within the first magnetic gap and the second magnetic gap; and a piston coupled to the voice coil, wherein the piston is operable to vibrate in a direction parallel to the axis.

The present disclosure provides a speaker, comprising a housing, a carrying board, a magnetic component, a magnetic conductive component, a voice coil, and a diaphragm component. The housing comprises an accommodating space and a rear cavity space communicated with the accommodating space. An area in the accommodating space communicating with the rear cavity space is an airflow area. The carrying board is disposed in the accommodating space. The magnetic component is disposed on the carrying board. The magnetic conductive component is disposed at the magnetic component. The voice coil is disposed in the magnetic component and the magnetic conductive component. The diaphragm component is disposed in the accommodating space, and is connected to the voice coil. Wherein, the magnetic component disposed in the airflow area comprises a first demagnetization configuration or/and the magnetic conductive component disposed in the airflow area comprises a second demagnetization component.

A biodegradable microphone has a housing fabricated from a biodegradable ferromagnetic filament. The ferromagnetic filament is based on a biodegradable polymer having embedded magnetic materials. The housing has a body portion, an open first end and an opposite second end having a central opening. A permanent magnet is removably lodged within the central opening. The ferromagnetic filament and the magnet cooperate to produce a magnetic field within the housing interior. A biodegradable diaphragm is joined to the open first end of the housing. The diaphragm has an interior side facing the housing interior. A biodegradable coil is joined to the interior side and extends downward into the housing interior and is in proximity to the permanent magnet. Vibrations of the diaphragm cause a reciprocating motion of the coil within the magnetic field thereby inducing an electrical current in the coil.

Provided is a speaker, including a frame, a vibration unit fixed to the frame; and a magnetic circuit unit driving the vibration unit to vibrate and produce sound. The vibration unit includes a diaphragm and a voice coil; the diaphragm includes a first suspension, a second suspension and a vibrating portion; the magnetic circuit unit includes a magnetic gap, and the voice coil is inserted in the magnetic gap; the magnetic circuit unit includes a yoke; and the vibration unit further includes a fixing ring connected to the magnetic circuit unit; an inner peripheral side of the second suspension is fixed to an outer side of the fixing ring; and a connection position of the second suspension and the fixing ring is located between two opposite ends of the fixing ring along a vibrating direction of the diaphragm. With this structure, sealing performance of the speaker is improved.

A loudspeaker includes two diaphragms arranged opposite each other, a drive unit for deflecting the two diaphragms in response to a control signal, the drive unit being coupled to the two diaphragms such that a first one of the two diaphragms is deflected in a first direction, and a second one of the two diaphragms is deflected in a second direction equal to the first direction.

An armature having a U-shaped element having a first leg portion and a second leg portion and an attachment portion. The attachment portion has a first leg and a second leg and a central portion connected to the legs, such as an E-shaped portion, where the first leg portion is connected to the central portion. A transducer can include such armature.

Provided is a multi-input-driving loudspeaker, including a frame, a cone arranged on the frame, and a plurality of input driving mechanisms, wherein each of the input driving mechanism includes a voice coil and a magnetic circuit assembly for driving the voice coil to vibrate; the frame is provided with a plurality of magnetic circuit mounting holes, and at most one magnetic circuit assembly is arranged at each magnetic circuit mounting hole; the cone is provided with a plurality of voice coil mounting holes, and at most one voice coil is provided at each voice coil mounting hole; the loudspeaker further includes a damper, the damper is opened with a plurality of voice coil holes, and each of the voice coils pass through a corresponding voice coil hole and is closely fitted with the damper.

Embodiments are disclosed of a flat speaker containing a single permanent magnet, a yoke opposite the single permanent magnet, and one or more voice coil plates located between the single permanent magnet and the yoke. The one or more voice coil plates each comprise a bobbin and a coil arranged on one or both sides of the bobbin.

A wearable audio device with an electro-acoustic transducer for creating audio output, the electro-acoustic transducer comprising a transducer magnet that produces a transducer magnetic field, a magnetic field sensor spaced from the electro-acoustic transducer and constructed and arranged to sense the Earth's magnetic field, and a magnetic shield comprising a material with high magnetic permeability. The shield is configured to intercept at least some of the transducer magnetic field before it reaches the magnetic field sensor.