Abstract: An electrical-acoustic transducer includes a housing, a magnetic circuit device, a voice coil and a diaphragm. The magnetic circuit device is disposed in the housing and generates a magnetic circuit. The voice coil is disposed on the path of the magnetic circuit, and configured for generating magnetism upon receiving an electrical power. The diaphragm is made of metal, fixedly combined with the voice coil and having a scraggy cross section. When the voice coil of the electrical-acoustic transducer generates the magnetism according to the electrical power and interacts with the magnetic circuit, the diaphragm vibrates so as to generate sound.

Abstract: A light-emitting diode includes an optical layer formed in an array of substantially equidistant light extracting spots integrated to its multi-layered structure. The array of light extracting spots includes a distribution of juxtaposed hexagon patterns. The layer thickness of the light extracting spots is less than 800 ?.

Abstract: A light-emitting diode includes an optical layer formed in an array of substantially equidistant light extracting spots integrated to its multi-layer structure. The array of light extracting spots includes a distribution of juxtaposed hexagon patterns. The layer thickness of the light extracting spots is less than 800 ?, and preferably around 500 ?.

Abstract: A speaker includes a yoke, a diaphragm, an electrode plate, a magnet and a lower plate. The yoke includes a base, a wall and a terminal plate connected integrally to each other. The wall has a chamber and is mounted on the base. The rest components are mounted in the chamber. An amount of the components of the speaker is reduced because of the integral connection among the base and the wall. Consequently, the manufacturing costs and assembly process will be lowered and simplified.

Abstract: A loud speaker includes a circuit board and a base. The circuit board includes a plurality of contacts on a side thereof. The base is formed of plastic material by injection molding. The base includes an insertion groove in an end thereof. The circuit board is embedded in the insertion groove. The base further includes a plurality of grooves in communication with the insertion groove. The grooves are respectively aligned with the contacts of the circuit board. The circuit board is placed in a mold for forming the base and the circuit board is embedded in the base after formation of the base by injection molding.

Abstract: A speaker includes a body, a yoke, and two connectors. The body includes an outer periphery with a recessed section. The yoke is securely mounted around the body and engaged with the recessed section. Each connector includes a first end fixed to the yoke and a second end. Each connector is at a level not beyond an end face of the body when the speaker is in an assembled state. Thus, the speaker has a reduced height, which is particularly useful for electronic devices that have a trend in miniaturization.

Abstract: A receiver includes a rear yoke inside a housing, a first acoustic paper bonded to an annular base of the rear yoke to block a rear open side of a tubular body of the rear yoke, an annular magnet supported on the annular base around the tubular body, a front yoke disposed at a front side of the magnet, a vibration diaphragm stretched in front of the yokes, a voice coil suspended in an annular space between the yokes, a tubular cushion fitted into the tubular body of the rear yoke, and an annular cushion (or annular step) set between the magnet and the tubular body, and a second acoustic paper covering an air hole at a rear side of the housing.

Abstract: A power-tolerant assembly for combining a sound ring and a diaphragm of a speaker comprises a disk frame having a magnetic inducing body; a vibration diaphragm installed upon the disk frame; the vibration diaphragm having an annular lower ring section; a distal end of the annular lower ring section being bent as an L shape or U shape; and a sound ring within the vibration diaphragm; the magnetic inducing body being located below the sound ring; two sides or three sides of the sound ring being combined to the L or U shape distal end for increasing the combining area and strength of the combination of the adhering portion and the sound ring. Or a dust-proof cover is installed upon an upper side of the sound ring; the vibration diaphragm having an annular lower side; a lower distal end of the annular lower end being bent so as to enclose the sound ring.

Abstract: A loud speaker includes a circuit board and a base. The circuit board includes a plurality of contacts on a side thereof. The base is formed of plastic material by injection molding. The base includes an insertion groove in an end thereof. The circuit board is embedded in the insertion groove. The base further includes a plurality of grooves in communication with the insertion groove. The grooves are respectively aligned with the contacts of the circuit board. The circuit board is placed in a mold for forming the base and the circuit board is embedded in the base after formation of the base by injection molding.

Abstract: A thin type speaker includes a casing having a top-open receiving chamber, and an electromagnet set mounted in the top-open receiving chamber and formed of a yoke, a magnet, a pole piece, and a voice coil. A vibration diaphragm is peripherally connected to the periphery of the top-open receiving chamber. The vibration diaphragm has a corrugated damper at the center thereof. The damper has a center part fixedly connected to the electromagnet set. The voice coil is disposed at one side of the vibration diaphragm facing the top-open chamber and connected to the periphery of the damper.

Abstract: A receiver includes a rear yoke inside a housing, a first acoustic paper bonded to an annular base of the rear yoke to block a rear open side of a tubular body of the rear yoke, an annular magnet supported on the annular base around the tubular body, a front yoke disposed at a front side of the magnet, a vibration diaphragm stretched in front of the yokes, a voice coil suspended in an annular space between the yokes, a tubular cushion fitted into the tubular body of the rear yoke, and an annular cushion (or annular step) set between the magnet and the tubular body, and a second acoustic paper covering an air hole at a rear side of the housing.

Abstract: A dual magnetic loop type receiver is composed of a yoke molding, a ferrite yoke, an annular magnet, a magnetic pole member, a vibration panel, a ferrite core, and a circular plate. While the receiver is operated, the annular magnet and the ferrite core and the ferrite yoke cause the receiver to produce an inner magnetic loop that interacts with the inner voice coil, and an outer magnetic loop that interacts with the outer voice coil such that the receiver generates vibration and sound.

Abstract: A dual magnetic loop type receiver is composed of a yoke molding, a ferrite yoke, an annular magnet, a magnetic pole member, a vibration panel, a ferrite core, and a circular plate. While the receiver is operated, the annular magnet and the ferrite core and the ferrite yoke cause the receiver to produce an inner magnetic loop that interacts with the inner voice coil, and an outer magnetic loop that interacts with the outer voice coil such that the receiver generates vibration and sound.

Abstract: A dual magnetic loop type receiver is composed of a yoke molding, a yoke piece, an annular magnet, a magnetic pole member, a pressure plate, a circular plate, and a vibration panel. While the receiver is operated, the annular magnet and the yoke piece cause the receiver to produce an inner magnetic loop that interacts with the inner voice coil and an outer magnetic loop that interacts with the outer voice coil such that the receiver generates vibration and sound.