AAC Kaitai Technologies (Wuhan) CO., LTD

A speaker module includes a first MEMS speaker and a second MEMS speaker disposed at two opposite surfaces of a circuit board and mounted in a flipped manner; the first MEMS speaker including a first diaphragm structure electrically connected to a first electrode connection point and is controlled by the circuit board to vibrate; the second MEMS speaker including a second diaphragm structure electrically connected to a second electrode connection point and is controlled by the circuit board to vibrate.

A speaker structure includes a base, a diaphragm, a drive part, a first transmission part, and a second transmission part; the drive part including a first drive portion and a second drive portion, the first drive portion extending from the first end towards the second end, at least a segment of the first drive portion being disposed above the cavity, the second drive portion extending from the second end towards the first end, at least a segment of the second drive portion being disposed above the cavity, the segments of the first drive portion and the second drive portion disposed above the cavity being set in a crosswise configuration, the first transmission part being in direct contact with the first drive portion and the diaphragm, respectively, the second transmission part being in direct contact with the second drive portion and the diaphragm, respectively.

Provided are a MEMS controller and a MEMS device. The MEMS controller includes: at least one control unit including: two adjacent first anchor structures with a gap formed therebetween; cantilever beam structures respectively corresponding to the two first anchor structure, a first end of each of the cantilever beam structures being located at a top surface of a corresponding first anchor structure, and second ends of two adjacent cantilever beam structures directly facing each other and forming a second gap therebetween; and a diaphragm covering top surfaces of two second anchor point structures; and an encapsulation structure including a bottom plate, a side plate and a top plate connected in sequence. The bottom plate is provided with a first flow channel port, penetrating through the bottom plate, corresponding to the control unit and connected to the first gap of the corresponding control unit.

Provided are a MEMS controller and a MEMS device, including: at least one control unit including: two adjacent anchor structures with a first gap therebetween; and cantilever beam structures respectively corresponding to the two anchor structure, a first end of each cantilever beam structure being located at a top surface of the anchor structure corresponding thereto, and second ends of two adjacent cantilever beam structures directly facing each other and forming a second gap therebetween; and an encapsulation structure including a bottom plate, a side plate and a top plate connected in sequence, the bottom plate directly facing the top plate. The bottom plate is located at the bottom surface of the anchor structure and provided with a first flow channel port. The top plate is spaced from the top surfaces of the two cantilever beam structures and provided with a second flow channel port.

Provided is a speaker, including: a diaphragm structure including first and second diaphragms, the first diaphragm is configured to push air to vibrate to generate initial sound wave, and a signal of which is modulated based on a signal within an audible sound frequency band; and a cover plate structure enclosing with the diaphragm structure to form sound-generating cavity, the cover plate structure has a sound outlet hole connecting the sound-generating cavity with outside, the initial sound wave in the sound-generating cavity is transmitted to the outside through the at least one sound outlet hole to form a sound signal, the second diaphragm and the cover plate structure generate an acoustic environmental impedance used to modulate the initial sound wave to change sound pressure of the sound signal. The speaker can modulate and output a sound signal covering the audible sound frequency band based on the acoustic environmental impedance.

The present invention provides a multimass MEMS gyroscope featuring an orthogonal arrangement, which comprises an anchor point unit, a sensing unit and a driving unit; the anchor point unit comprises a central anchor point subunit located at the center of a rectangle and four corner anchor points located at the four corners of the rectangle respectively; the sensing unit comprises four detection mass blocks each of which has a frame structure and is elastically connected between the central anchor point subunit and the corresponding corner anchor point, receding spaces being formed between the detection mass blocks, and four detection decoupling parts; and the driving unit comprises four driving mass blocks, and driving decoupling parts. The gyroscope can improve the arrangement area of transducers and reduce the mass of the detection mass blocks to improve the Coriolis gain, thereby improving the mechanical sensitivity of the gyroscope.

Provided is a fully decoupled MEMS gyroscope, including a base, a sensing unit elastically connected to the base, and a driving unit coupled with the sensing unit and driving the sensing unit to move. The base includes a coupling anchor point located at a center of a rectangle and a coupling structure elastically connected to the coupling anchor point. The driving unit includes four driving members located at inner positions of four corners of the rectangle. The sensing unit includes two X mass blocks symmetrically arranged in two of the avoiding intervals, two Y mass blocks symmetrically arranged in the other two of the avoiding intervals, four Z mass blocks elastically connected to the adjacent driving members and located at the four corners of the rectangle, and four Z detection decoupling members elastically connected to the adjacent Z mass blocks and elastically connected to each other around the rectangle.

The present disclosure discloses a MEMS speaker including a substrate with a cavity and a sounding assembly connected with the substrate, the substrate comprising an outer surface away from the cavity and connected with the sounding assembly, a top surface opposite to the outer surface and a side surface respectively connected with the outer surface and the top surface; a printed circuit board with a through hole and connected with the outer surface of the substrate; a first shell connected with the top surface of the substrate; and a damping mesh covering the through hole and connected with the printed circuit board; wherein sounds emitted by the sounding assembly transmit outward through the through hole and the damping mesh. Compared with the related art, MEMS speaker disclosed by the present disclosure has a better reliability.

The present invention provides a speaker device having a support structure with a support body provided with a sound chamber and an annular sound hole. The speaker device further includes an ultrasonic sound emitting unit for emitting symmetrical ultrasonic waves, and a demodulation structure with a diaphragm and multiple fixed parts. The diaphragm is spaced apart from the sound hole. The ultrasonic waves emitted by the ultrasonic sound emitting unit drive the demodulation structure to vibrate, adjusting the size of the gap. Compared with the prior art, the speaker device of the present invention has high sound wave demodulation efficiency, good improvement in vibration system amplitude, and excellent acoustic performance.

An accelerometer includes a substrate. The substrate includes anchor points. An external coupling unit is annular and is parallel to the substrate. A first torsion plate is disposed on an inner side of the external coupling unit and is connected to the anchor points. Inner coupling beams are disposed on a side, close to the anchor points, of the first torsion plate. A second torsion plate is disposed on the inner side of the external coupling unit and is connected to the anchor points, the second torsion plate is connected to the first torsion plate through two of the inner coupling beams, the second torsion plate and the first torsion plate are mutually embedded, the first torsion plate and the second torsion plate are symmetrical about a first axis of symmetry. The accelerometer reduces cross coupling reduced, and accuracy and anti-interference performance of the accelerometer are improved.