23results about "Cellulose-like diaphragms" patented technology

There is a composite material for an acoustic transducer diaphragm comprising: a thermoplastic polymer resin, a graphitic filler, and optionally a coupling agent. The thermoplastic polymer resin is selected from the group consisting of polypropylene, polyethylene, poly(methyl methacrylate), polycarbonate, polyoxymethylene, cyclic olefin copolymer, polyethylene terephthalate, acrylonitrile butadiene styrene, polybutylene terephthalate, polyamide, poly(ADP-ribose) polymerase, polyethylenimine, polyamide-imide, polyether ether ketone, polyolefin, polyester, polycarbonate, polysulfone, polyacetals, polyvinyl acetals, polyketone, polyamides, cyclic olefin copolymer, thermoplastic thermotropic liquid-crystal polymer, polyphenylene sulfide, polyimide and a mixture thereof. The graphitic filler is selected from the group consisting of graphene oxide, reduced graphene oxide, graphite, graphene and carbon nanotubes, and a mixture thereof. The coupling agent or a mixture is selected from the group consisting of titanium organometallics, aluminum organometallics, zirconium organometallics, and silicon organometallics.

Wireless-enabled loudspeaker includes a capacitive touch user interface. The loudspeaker may comprise at least one electroacoustic transducer, a processor in communication with the at least one electroacoustic transducer, and an exterior surface comprising a capacitive touch user interface that allows a user to control operation of the loudspeaker. The exterior surface acts a dielectric for the capacitive touch user interface. The loudspeaker may comprise a wireless transceiver circuit for receiving and transmitting wireless communication signals via a wireless network. The wireless transceiver circuit may receive wirelessly audio content from streaming audio content servers that are connected to the Internet. The capacitive touch user interface comprises a plurality of capacitive sense electrodes.

To provide a diaphragm for a speaker, with appropriate energy-loss beneficial to the quality of the generated speech.SOLUTION: A diaphragm 400a includes, from top to bottom, an upper surface region 410a, a central region 430a, and a lower surface region 450a. The upper surface region, the central region, and the lower surface region are all made of a homogeneous amorphous material, and the homogeneous amorphous material includes silicon dioxide. The diaphragm is a hard, homogeneous, amorphous material with a variable internal stress, and the stress varies with the depth from the surface to the center of the diaphragm. The thickness d1 of the upper surface region 410a is preferably about 0.01 to 20 micrometers, and similarly, the thickness d1 of the lower surface region 450a is preferably about 0.01 to 20 micrometers. The thickness d2 of the central region 430 is preferably about 0.02 to 49.9 micrometers.SELECTED DRAWING: Figure 1B

Embodiments of the present disclosure provide a display apparatus and an electromagnetic actuator, the display apparatus includes a display structure, a sound-emitting substrate, at least one electromagnetic actuator and a stabilizer; where one side of the sound-emitting substrate is attached to the display structure, and the electromagnetic actuator is fixedly attached to the other side of the sound-emitting substrate through the stabilizer; the electromagnetic actuator includes a bracket and a plurality of flexible support feet extending away from the bracket. The electromagnetic actuator is fixedly arranged on the sound-emitting substrate through the stabilizer, and the bracket receives the electromagnetic actuator, the plurality of flexible support feet can keep the electromagnetic actuator stable during the vibration process of the electromagnetic actuator, which helps avoid position shift of the electromagnetic actuator under long-time working.

Wireless-enabled loudspeaker includes a capacitive touch user interface. The loudspeaker may comprise at least one electroacoustic transducer, a processor in communication with the at least one electroacoustic transducer, and an exterior surface comprising a capacitive touch user interface that allows a user to control operation of the loudspeaker. The exterior surface acts a dielectric for the capacitive touch user interface. The loudspeaker may comprise a wireless transceiver circuit for receiving and transmitting wireless communication signals via a wireless network. The wireless transceiver circuit may receive wirelessly audio content from streaming audio content servers that are connected to the Internet. The capacitive touch user interface comprises a plurality of capacitive sense electrodes.

The present invention relates to an electronic device. A display device includes: a display module including a display panel configured to display an image; a rear cover located on a rear surface of the display module; and a sound generating module located at the rear cover and configured to vibrate the display module to generate sound, with the rear surface of the sound generating module being covered by the rear cover.

A flat panel loudspeaker, according to the present invention, has a housing with a sound panel, opposing sides, and a back panel at least partially enclosing a hollow chamber therebetween. An exciter is rigidly attached to the sound panel within the chamber to selectively induce vibrations in the sound panel. The sound panel has a density of between 465 kg / m3 and 700 kg / m3.

A diaphragm is injection-molded using cellulose composite pellets, the cellulose composite pellets comprise at least one of a transparent cellulose material, a resin material, a light diffuser, a dispersant, and a pigment, and the transparent cellulose material is in 30 wt % to 70 wt %.

The present disclosure relates to a vibration device and a sound device and a vehicle device including the same. A vibration device can include a vibration means and an adhesive member located at a surface of the vibration means. A modulus of the vibration means can be equal to a modulus of the adhesive member, or can be greater than the modulus of the adhesive member.

The present disclosure discloses a NiMo-based nanomaterial earphone diaphragm sand a preparation method thereof. The diaphragm uses a paper base film as the basis, and a uniform distribution of a NiMo-based nanomaterial coating is formed on a surface of the base film by plasma modification and electrostatic spraying technology, forming a concentric ring structure and using the NiMo-based nanomaterial as connecting lines to enhance the stability and conductive performance of the overall structure. This design not only significantly improves the audio quality performance of the earphones, including clarity, detail restoration, and dynamic range, but also greatly improves the durability and environmental adaptability of the diaphragm. The present disclosure provides an innovative solution for high-end earphone manufacturing, and is especially suitable for music lovers who pursue the ultimate audio experience and professional audio fields.

A loudspeaker comprising a frame (1), a cone paper (2) and a magnetic structure, characterized in that the cone paper (2) has a body (21) at its edge which, in a side section view of the loudspeaker, has a Y-structure forming an upper arm and a lower arm, each extending from the edge of the body (21), wherein an upper edge (22) is attached to the top of the upper arm and a lower edge (23) is attached to the underside of the lower arm; and wherein the upper edge (22) and the lower edge (23) project upwards and downwards respectively and form a symmetrical structure in the side view.

To provide a display device that generates sound by vibrating a display panel and generating sound.SOLUTION: A display device includes a display module 100 including a display panel 110 that displays an image, a back cover 300 placed on the back of the display module, and a sound generation module 500 that is supported by the back cover and vibrates the display module to generate acoustic PVS. The back side of the sound generation module is covered by a back cover. Furthermore, a middle frame 700 provides a gap space GS between the display module and the back cover.SELECTED DRAWING: Figure 2

A speaker, including a paper cone, a damping ring, a damper, a magnetic assembly, and a voice coil, is provided. The damping ring is integrally connected to the paper cone. The damping ring has a first side edge and a second side edge opposite to each other, and the first side edge is connected to the paper cone. The damper has an inner edge and an outer edge. The outer edge abuts against the second side edge of the damping ring. The magnetic assembly abuts against the inner edge of the damper. The paper cone, the damping ring, the damper, and the magnetic assembly define a space. The voice coil is disposed in the space and abuts against the paper cone.

A negative-stiffness audio transducer can include a frame, a voice coil, and a suspension assembly resiliently attaching the voice coil to the frame. The suspension assembly provides a negative stiffness to axial movement of the voice coil. The transducer further includes a diaphragm coupled to the voice coil such that the voice coil moves the diaphragm in an axially inward direction or an axially outward direction in response to an electrical signal. A stabilizer can be used to selectively move the diaphragm axially inward or outward to maintain the audio transducer in an operational state.

A speaker diaphragm includes a base material including a resin matrix including a thermoplastic resin as a main component, and fibers dispersed within the resin matrix. The fibers include a plurality of loss regions where the fibers are locally bent and broken, or a plurality of loss regions having a diameter 5% to 50% larger than an average diameter of the fibers

Disclosed is a multi-cone loudspeaker, including a cone assembly. The cone assembly includes a central cone and a plurality of outer cones successively arranged in a circumferential direction of the central cone. The central cone is driven by a central driving mechanism to vibrate and sound, each of the plurality of outer cones is driven by one of outer driving mechanism to vibrate and sound. The central driving mechanism includes a central voice coil connected to the central cone, and a central magnetic driving system for driving the central voice coil, and each of the plurality of outer driving mechanism includes an outer voice coil connected to one of the plurality of outer cones, an outer damper sleeved on the outer voice coil, and an outer magnetic driving system for driving the outer voice coil.

The invention relates to a modified poplar fiber as well as a preparation method and application thereof. The preparation method comprises the following steps: performing primary pulping on poplar wool to obtain dissociated poplar fiber, adding pulping enzyme for secondary pulping to obtain fibrillated poplar fiber, screening pulp, and treating with hydrophobic treatment liquid to obtain the modified poplar fiber, the modified poplar fiber provided by the invention has the characteristics of uniform size and good hydrophobicity, is used for the modified poplar fiber in the preparation of the loudspeaker cone, can be tightly combined with paper pulp fiber, reduces moisture absorption, can simultaneously improve the temperature resistance, waterproof and moistureproof effects and Young modulus of the loudspeaker cone, and increases the damping performance.

A loudspeaker assembly includes: a chassis; a loudspeaker, including a drive unit and a diaphragm. The diaphragm includes a body portion and inner and outer suspension portions, wherein the body portion extends between the inner and outer suspension portions. The drive unit moves the body portion along a movement axis. The body portion has a front face facing forwards and a rear face facing rearwards parallel to the movement axis. The outer suspension portion is integral with the body portion, and is attached to the chassis at a first attachment location such that the body portion is suspended from the chassis. The inner suspension portion is integral with the body portion, and is attached to the chassis at a second attachment location such that the body portion is suspended from the chassis. The first and second attachment locations have separate first and second positions along the axis, respectively.

To improve a sound characteristic and a sound pressure characteristic in a low-pitched sound band region.SOLUTION: A vibration apparatus may include a vibration element and an adhesive member at a rear surface of the vibration element. A modulus of the vibration element may be equal to a modulus of the adhesive member or may be greater than the modulus of the adhesive member.SELECTED DRAWING: Figure 1

A diaphragm 1 for an electroacoustic transducer includes a paper substrate 10 containing cellulose fibers 20 as a main component and is configured such that a first surface region 12 with a predetermined thickness from a first surface of the paper substrate 10 has a greater total amount of coloring particles 21 than a second surface region 14 with a predetermined thickness from a second surface of the paper substrate 10, the second surface being opposite to the first surface.

To provide a vibration device capable of generating sound by vibrating a display panel, having improved sound pressure characteristics, and including a plurality of vibration generators.SOLUTION: A display device includes: a display panel for displaying an image; and a vibration device 200 for vibrating the display panel on a back surface of the display panel. The vibration device has a plurality of vibration generators 210, 230 overlapping each other, and can output, to a front of the display panel, sound generated in the display panel and having improved sound characteristics and sound pressure characteristics in a middle and low sound range by overlapping and laminating the plurality of vibration generators so as to be displaced, driven, or vibrated in the same direction.SELECTED DRAWING: Figure 3