AAC MICROTECH (CHANGZHOU) CO., LTD.
|AAC MICROTECH (CHANGZHOU) CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20150016657||VIBRATING DIAPHRAGM AND SOUNDER USING THE SAME - A diaphragm and a sounder using the same are disclosed in the present disclosure. The diaphragm includes a suspension portion and a dome assembled with the suspension portion. The dome includes a polyethylene terephthalate (PET) layer, a middle layer and an adhesive layer, with the middle layer sandwiched between the PET layer and the adhesive layer. The middle layer is formed with a first through hole for adjusting the deformation amount of the diaphragm. The present disclosure can improve the flatness of the dome and prevent deformation of the dome after the vibration.||01-15-2015|
|20140285149||PIEZOELECTRIC CHARGING SYSTEM AND ELECTRONIC DEVICE USING SAME - The present disclosure relates to a piezoelectric charging system, which has two operational modes: a vibration mode and a charging mode. The system includes a piezoelectric vibrator, a driving module, a switch selecting module, a rectifying and processing module and a charging control module. The present disclosure can make full use of the mechanical energy from human beings and the ambient environment to provide the electronic device with an important energy source. Furthermore, energy can be charged to the electronic devices in real time. Furthermore, the present disclosure provides a terminal device using the piezoelectric charging system.||09-25-2014|
|20140140543||Micro-electroacoustic Device - A micro-electroacoustic device includes a holder forming a hollow space, a magnetic system received in the hollow space, a vibrating system having a diaphragm and a coil driving the diaphragm for vibrating along a vibrating direction. The diaphragm is assembled with the holder and has an upper edge portion and a lower edge portion connected with the upper edge portion and assembled with the holder. The upper edge portion has a protruding part protruding away from the magnetic system and the lower edge portion has a recessed part recessed towards the magnetic system for supporting the voice coil evenly.||05-22-2014|
|20140133684||Acoustic Device - One embodiment of the invention discloses an acoustic device having a housing and a speaker unit accommodated in the housing. The speaker unit forms a front volume and a back volume together with the housing. The housing includes an extra volume communicating with the back volume and a sound channel communicated with the front volume. The extra volume is isolated from the sound channel. The invention provides an acoustic device with enlarged back volume for improving low frequency sound quality.||05-15-2014|
|20140093106||Diaphragm - A diaphragm includes a central portion and an edge portion surrounding the central portion and smoothly connecting with the central portion. The edge portion has a main curved portion which is convex forward in the vibrating direction and a first side curved portion continued to an inner periphery of the main curved portion and connected with the central portion. The first side curved portion is convex backward in the vibrating direction. The rigidity of the diaphragm can be increased, without sacrificing the acoustic characteristics and reducing the size of the diaphragm.||04-03-2014|
|20140079253||Suspension and speaker using same - Disclosed is a speaker having a suspension. The suspension includes a vibrating arm having at least a pair of layer structures and an insulating layer sandwiched between the two layer structures. Each layer structure has a foil signal transmission layer, a hardness reinforcement layer and a glue layer for connecting the foil signal transmission layer with the hardness reinforcement layer and a conductive portion for electrically connecting the foil signal transmission layers of each of layer structures. The suspension of the disclosure can prevent the signal layer from being broken. The suspension disclosed has at least two layer structures, which makes the signal transmitted in each layer structures at the same time, even if one of the layer structures is broken, the rest of the layer structures can still be working.||03-20-2014|
|20140072162||Speaker Box - One embodiment of the invention discloses a speaker box having a housing and a speaker accommodated in the housing. The speaker includes a sound radiation surface for generating sound. The housing includes a first and second output ports disposed at one side of the housing for transmitting the sound to outside of the speaker box. The housing includes a plurality of ribs disposed therein and forming a bending channel. The first and second output ports are disposed at two ends of the bending channel. The bending channel is divided into a front channel and a back channel by the speaker. The speaker box is capable of obtaining a better low frequency sound reproduction quality.||03-13-2014|
|20140056445||Micro-electroacoustic Device - A micro-electroacoustic device includes a vibrating unit and a magnetic circuit unit supporting the diaphragm. The vibrating has a diaphragm and a voice coil driving the diaphragm to vibrate along a vibration direction. The magnetic circuit unit has a base board, a first magnetic conduction member disposed on the base board, a second magnetic conduction member disposed on the base board and around the first magnetic conduction member, and a magnetic gap formed by the first and second magnetic conduction members. The base board having an air-leaking hole communicating outside with the magnetic gap for balancing the air pressure below the diaphragm during the vibration of the diaphragm. A projection of the diaphragm along the vibration direction on the base board being within an outline of the magnetic circuit.||02-27-2014|
|20130308812||MICRO-SPEAKER BOX - A micro-speaker box includes a cabinet with a cavity room, a speaker unit, an amount of adsorbents located in the inside of the cabinet, and a porous layer arranged in the cavity room and dividing the cavity room of the cabinet into twp parts, one part for accommodating the speaker unit, the other part filled with the adsorbents. The porous layer defines an acoustical airflow resistance no more than 150 MKS Rayls, and includes billions of stomas. The stomas in the porous layer have diameters in the range of 1 um to 500 um.||11-21-2013|
Patent applications by AAC MICROTECH (CHANGZHOU) CO., LTD.