A microfabricated structure includes a perforated stator; a first isolation layer on a first surface of the perforated stator; a second isolation layer on a second surface of the perforated stator; a first membrane on the first isolation layer; a second membrane on the second isolation layer; and a pillar coupled between the first membrane and the second membrane, wherein the first isolation layer includes a first tapered edge portion having a common surface with the first membrane, wherein the second isolation layer includes a first tapered edge portion having a common surface with the second membrane, and wherein an endpoint of the first tapered edge portion of the first isolation layer is laterally offset with respect to an endpoint of the first tapered edge portion of the second isolation layer.

A microfabricated structure includes a perforated stator; a first isolation layer on a first surface of the perforated stator; a second isolation layer on a second surface of the perforated stator; a first membrane on the first isolation layer; a second membrane on the second isolation layer; and a pillar coupled between the first membrane and the second membrane, wherein the first isolation layer includes a first tapered edge portion having a common surface with the first membrane, wherein the second isolation layer includes a first tapered edge portion having a common surface with the second membrane, and wherein an endpoint of the first tapered edge portion of the first isolation layer is laterally offset with respect to an endpoint of the first tapered edge portion of the second isolation layer.

A speaker includes a supporting base, a first speaker assembly and a second speaker assembly. The first speaker assembly includes a first magnet, a first coil and a first diaphragm. The first magnet is disposed on the carrier. The first coil is configured to interact with the first magnet. The first diaphragm is connected to the first coil. The second speaker assembly includes a second magnet, a second coil and a second diaphragm. The second magnet is disposed on the carrier. The second coil is configured to interact with the second magnet. The second diaphragm is connected to the second coil. The first speaker assembly and the second speaker assembly are symmetrical relative to the carrier such that, in operation, the magnitudes of the displacement of the first diaphragm and the second diaphragm are the same, but the directions of the displacement are opposite.

A speaker includes a supporting base, a first speaker assembly and a second speaker assembly. The first speaker assembly includes a first magnet, a first coil and a first diaphragm. The first magnet is disposed on the carrier. The first coil is configured to interact with the first magnet. The first diaphragm is connected to the first coil. The second speaker assembly includes a second magnet, a second coil and a second diaphragm. The second magnet is disposed on the carrier. The second coil is configured to interact with the second magnet. The second diaphragm is connected to the second coil. The first speaker assembly and the second speaker assembly are symmetrical relative to the carrier such that, in operation, the magnitudes of the displacement of the first diaphragm and the second diaphragm are the same, but the directions of the displacement are opposite.

A piezoelectric actuator including an upper piezoelectric bimorph beam having a first upper piezoelectric layer, a second upper piezoelectric layer and at least three upper electrode layers extending between a first end and a second end of the upper piezoelectric bimorph beam; a lower piezoelectric bimorph beam having a first lower piezoelectric layer, a second lower piezoelectric layer and at least three lower electrode layers extending between a first end and a second end of the lower piezoelectric bimorph beam, and wherein the first end of the lower piezoelectric bimorph beam is coupled to the first end of the upper piezoelectric bimorph beam by a first joint, and the second end of the lower piezoelectric bimorph beam is coupled to second end of the upper piezoelectric bimorph beam; and a base member coupled to a center region of the lower piezoelectric bimorph beam.

The purpose of the present invention is to provide a glass sheet composite having satisfactory acoustic performance. The present invention relates to a glass sheet composite including a diaphragm that is vibrated by a vibrator, and a support member that is attached along an edge portion of the diaphragm to support the diaphragm, in which the diaphragm includes at least one glass sheet, and is supported on the support member through a fixing part that fixes the edge portion of the diaphragm to the support member, and a vibration-permitting part that permits vibration of the diaphragm.

A speaker core, speaker, and associated electronic device include at least one bent portion of a diaphragm folded ring suspended over a top of a diaphragm frame enclosing an enlarged vibration space.

The present disclosure provides an acoustic output apparatus. The acoustic output apparatus may include a vibration assembly and a mass element. The vibration assembly may include a piezoelectric structure and a vibration element. The piezoelectric structure may be configured to convert an electrical signal into mechanical vibrations, and the vibration element may be connected to the piezoelectric structure at a first position of the piezoelectric structure and configured to receive the mechanical vibrations to generate an acoustic signal. The mass element may be connected to the piezoelectric structure at a second position of the piezoelectric structure.

A speaker comprises an electroacoustic transducer diaphragm which is mounted between or suspended from multiple suspension pins or suspension components. The suspension pins or suspension components provide mechanical support and acoustic isolation to the diaphragm.

The present disclosure discloses a flexible circuit board and a speaker. The flexible circuit includes a substrate, a first cover film attached to a side of the substrate and including at least a silica gel layer, a second cover film attached to the other side of the substrate, and a copper foil layer sealed between the substrate and the first cover film or between the substrate and the second cover film. Compared with the related art, the flexible circuit disclosed by the present disclosure has a higher strength.