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.

A microphone with an additional piezoelectric component for energy harvesting is provided, and includes a substrate penetrated through by a cavity, a diaphragm, and a piezoelectric conversion. The diaphragm includes a vibration portion and at least one connecting arm, and two ends of each of the at least one connecting arm are connected to the vibration portion and the substrate, respectively. The piezoelectric conversion component is disposed on one of the at least one connecting arm and configured to convert mechanical energy collected from a displacement of the diaphragm by sound to electrical energy. The piezoelectric conversion component is mounted on the diaphragm, so as to convert the mechanical energy collected from the diaphragm by the sound to the electrical energy, thereby effectively recycling the mechanical energy and avoiding a waste of energy.

A microphone with an additional piezoelectric component for energy harvesting is provided, and includes a substrate penetrated through by a cavity, a diaphragm, and a piezoelectric conversion. The diaphragm includes a vibration portion and at least one connecting arm, and two ends of each of the at least one connecting arm are connected to the vibration portion and the substrate, respectively. The piezoelectric conversion component is disposed on one of the at least one connecting arm and configured to convert mechanical energy collected from a displacement of the diaphragm by sound to electrical energy. The piezoelectric conversion component is mounted on the diaphragm, so as to convert the mechanical energy collected from the diaphragm by the sound to the electrical energy, thereby effectively recycling the mechanical energy and avoiding a waste of energy.

The present disclosure provides a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes a fluorosilicone rubber film layer, and the fluorosilicone rubber includes a linear polymer composed of a silica main chain and a side chain radical; a molecular structure of the polymer including a unit with the side chain radical with vinyl is a methyl vinyl siloxane unit, and a unit with the side chain radical with R.sub.1 is a fluorine-containing siloxane unit; and wherein n and m are natural numbers, and R.sub.1 comprises at least one of fluoroalkyl and fluoroaryl.

The present disclosure provides a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes a fluorosilicone rubber film layer, and the fluorosilicone rubber includes a linear polymer composed of a silica main chain and a side chain radical; a molecular structure of the polymer including a unit with the side chain radical with vinyl is a methyl vinyl siloxane unit, and a unit with the side chain radical with R.sub.1 is a fluorine-containing siloxane unit; and wherein n and m are natural numbers, and R.sub.1 comprises at least one of fluoroalkyl and fluoroaryl.

Disclosed are a diaphragm for a sound generating device and a sound generating device. The vibration diaphragm comprises at least one elastomer layer, wherein the elastomer layer is made of a hydrogenated nitrile butadiene rubber polymer; and the hydrogenated nitrile butadiene rubber polymer comprises acrylonitrile blocks, content of the acrylonitrile blocks in the hydrogenated nitrile butadiene rubber polymer ranging from 10 wt % to 70 wt %, a vulcanizing agent is added into the hydrogenated nitrile butadiene rubber polymer, and content of the vulcanizing agent is 1% to 15% of total content of the hydrogenated nitrile butadiene rubber polymer. The diaphragm of the present disclosure has excellent resilience, maintains high elasticity in a low-temperature environment and is capable of long-time working in a high-temperature environment, therefore enabling the sound generating device to be applied in an extremely severe environment while keeping its acoustic performance in an excellent state.

A passive sounding device integrated into a flat panel display includes a glass diaphragm having a first surface for forming a light-emitting array of the flat-panel display thereon, a suspension edge, and a frame, wherein the glass diaphragm is tightly sealed with the frame through the suspension edge to form an airtight space in the frame, and the glass diaphragm vibrates and emits sound in response to the pressure of the sound waves generated by an active sounding device.

A passive sounding device integrated into a flat panel display includes a glass diaphragm having a first surface for forming a light-emitting array of the flat-panel display thereon, a suspension edge, and a frame, wherein the glass diaphragm is tightly sealed with the frame through the suspension edge to form an airtight space in the frame, and the glass diaphragm vibrates and emits sound in response to the pressure of the sound waves generated by an active sounding device.

A speaker includes a housing having walls that define a cavity and a diaphragm covering the cavity and configured to vibrate under application of a magnetic field. The vibration produces sound waves. The walls are configured to deform under bending stress. The speaker is configured produce the sound waves both in an undeformed state and in a deformed state. Another speaker includes a flexible layer, a sensor configured to detect a curvature of the flexible layer, and a transducer disposed on and configured to vibrate the flexible layer. The vibrations of the flexible layer generate sound waves and output generated by the transducer is based on the curvature of the flexible layer.

A speaker includes a housing having walls that define a cavity and a diaphragm covering the cavity and configured to vibrate under application of a magnetic field. The vibration produces sound waves. The walls are configured to deform under bending stress. The speaker is configured produce the sound waves both in an undeformed state and in a deformed state. Another speaker includes a flexible layer, a sensor configured to detect a curvature of the flexible layer, and a transducer disposed on and configured to vibrate the flexible layer. The vibrations of the flexible layer generate sound waves and output generated by the transducer is based on the curvature of the flexible layer.