The present disclosure relates to a molded article provided with a resin part formed with a thermoplastic resin composition. The molded article is provided with a resin part formed with a thermoplastic resin composition. The thermoplastic resin composition containing a thermoplastic resin, cellulose, and an ionic compound, wherein a content of the cellulose is 1 to 100 parts by mass based on 100 parts by mass of the thermoplastic resin, and a content of the ionic compound is 0.001 times or more and less than 1.000 times the content of the cellulose.

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.

The present disclosure relates to a flexible printed circuit board (FPCB) diaphragm microspeaker having a magnetic field pair structure, and more particularly, to a microspeaker using an FPCB diaphragm in which magnetic fields are arranged in pairs up and down to increase the strength of a horizontal component of the magnetic fields. The microspeaker includes: a FPCB diaphragm in which a conductive coil pattern is formed on a non-conductive film; an upper magnetic circuit disposed above the FPCB diaphragm and having a yoke and a magnet; and a lower magnetic circuit disposed below the FPCB diaphragm and having a yoke and a magnet. When an electrical signal is applied to the coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates to generate sound by mutual electromagnetic force between the upper magnetic circuit and the lower magnetic circuit.

The present disclosure relates to a flexible printed circuit board (FPCB) diaphragm microspeaker having a magnetic field pair structure, and more particularly, to a microspeaker using an FPCB diaphragm in which magnetic fields are arranged in pairs up and down to increase the strength of a horizontal component of the magnetic fields. The microspeaker includes: a FPCB diaphragm in which a conductive coil pattern is formed on a non-conductive film; an upper magnetic circuit disposed above the FPCB diaphragm and having a yoke and a magnet; and a lower magnetic circuit disposed below the FPCB diaphragm and having a yoke and a magnet. When an electrical signal is applied to the coil pattern of the FPCB diaphragm, the FPCB diaphragm vibrates to generate sound by mutual electromagnetic force between the upper magnetic circuit and the lower magnetic circuit.

A loudspeaker arrangement of a vehicle, comprises a speaker including an at least partially transparent diaphragm and a transducer coupled to the diaphragm, wherein movement of the transducer causes vibration of the diaphragm to generate sound by vibration of the diaphragm, the diaphragm having a front face directed towards an interior of the vehicle and an opposite rear face; and a carrier configured to support the diaphragm by supporting the diaphragm at its edges relative to a window glass of the vehicle such that the rear face of the diaphragm faces and is spaced from the window glass.

A loudspeaker arrangement of a vehicle, comprises a speaker including an at least partially transparent diaphragm and a transducer coupled to the diaphragm, wherein movement of the transducer causes vibration of the diaphragm to generate sound by vibration of the diaphragm, the diaphragm having a front face directed towards an interior of the vehicle and an opposite rear face; and a carrier configured to support the diaphragm by supporting the diaphragm at its edges relative to a window glass of the vehicle such that the rear face of the diaphragm faces and is spaced from the window glass.

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.

According to the present invention, a diaphragm is disposed on a yoke. A recess is formed in the upper surface of the diaphragm. A first metal plate is disposed in the recess. A permanent magnet is disposed on the approximate center of the first metal plate. A second metal plate is disposed on the permanent magnet. The sizes of the first metal plate and the second metal plate are greater than that of the permanent magnet. That is, with respect to the permanent magnet, the first metal plate and the second metal plate are disposed so as to protrude outward beyond the permanent magnet in the longitudinal direction.