公开(公告)号：US20240259734A1

公开(公告)日：2024-08-01

申请号：US18416751

申请日：2024-01-18

申请人： STMICROELECTRONICS S.r.l.

发明人： Federico VERCESI ,  Fabrizio CERINI ,  Silvia ADORNO

IPC分类号： H04R19/04 ,  H04R7/04 ,  H04R7/18 ,  H04R19/00 ,  H04R31/00

CPC分类号： H04R19/04 ,  H04R7/04 ,  H04R7/18 ,  H04R19/005 ,  H04R31/003 ,  H04R31/006 ,  H04R2201/003

摘要： Capacitive, MEMS-type acoustic transducer, having a sound collection part and a transduction part. A substrate region surrounds a first chamber arranged in the sound collection part and open towards the outside; a fixed structure is coupled to the substrate region; a cap region is coupled to the fixed structure. A sensitive membrane is arranged in the sound collection part, is coupled to the fixed structure and faces the first chamber. A transduction chamber is arranged in the transduction part, hermetically closed with respect to the outside and accommodates a detection membrane. An articulated structure extends between the sensitive membrane and the detection membrane, through the walls of the transduction chamber. A fixed electrode faces and is capacitively coupled to the detection membrane. Conducive electrical connection regions extend above the substrate region, into the transduction chamber.

公开(公告)号：US20240251215A1

公开(公告)日：2024-07-25

申请号：US18561760

申请日：2022-05-26

申请人： GOERTEK INC.

发明人： Ting WANG ,  Chun LI ,  Qiulin WEI

IPC分类号： H04R31/00 ,  H04R7/04

CPC分类号： H04R31/003 ,  H04R7/04 ,  H04R2307/025

摘要： The present invention relates to a diaphragm for sound generating devices and a preparation method thereof, and a sound generating device. The diaphragm for sound generating devices comprises only one layer of a thermoplastic polyester elastomer film, wherein the thermoplastic polyester elastomer is formed by copolymerization of a polyester hard segment which is prepared by reacting an aromatic dicarboxylic acid with a dihydric alcohol and a soft segment containing an aliphatic polycarbonate, and the diaphragm has a thickness of 10-200 □m, and a loss factor of 0.1-0.3 at a temperature of 23° C. The thermoplastic polyester elastomer used for the diaphragm of the present invention is composed of the polyester hard segment and the aliphatic polycarbonate soft segment, and such material not only solves the problem that the existing thermoplastic elastomers have poor resistances to high temperatures and chemicals, but also improves sensitivity, and can also well achieve the basic properties such as stiffness, resilience and damping required by vibration of the diaphragm.

公开(公告)号：US20240251214A1

公开(公告)日：2024-07-25

申请号：US18290427

申请日：2021-05-13

申请人： LG ELECTRONICS INC.

发明人： Sungdan LEE ,  Keunyoung LEE ,  Duho LEE

IPC分类号： H04R31/00 ,  H04R7/12

CPC分类号： H04R31/003 ,  H04R7/127 ,  H04R2231/001 ,  H04R2307/021 ,  H04R2307/023 ,  H04R2307/025

摘要： Embodiments relate to a diaphragm having high rigidity and high internal loss. The diaphragm may comprise: a matrix-shaped structure including a plurality of through-holes; and a graphene layer disposed in at least a part of the plurality of through-holes and coupled to the structure.

公开(公告)号：US12022270B2

公开(公告)日：2024-06-25

申请号：US17761669

申请日：2020-05-26

申请人： CSMC TECHNOLOGIES FAB2 CO., LTD.

发明人： Jiale Su ,  Guoping Zhou ,  Xinwei Zhang ,  Changfeng Xia

IPC分类号： H04R19/04 ,  B81C1/00 ,  H04R31/00

CPC分类号： H04R31/003 ,  B81C1/00158 ,  H04R19/04 ,  B81C2201/0105 ,  B81C2201/0116 ,  B81C2201/0133 ,  H04R2201/003

摘要： A preparation method for a micro-electromechanical systems (MEMS) microphone includes the steps of: providing a silicon substrate having a silicon surface; forming an enclosed cavity in the silicon substrate; forming a plurality of spaced apart acoustic holes in the silicon substrate, each acoustic hole having two openings, one of which communicating with the cavity and the other one located on the silicon surface; forming a sacrificial layer on the silicon substrate, which includes a first filling portion, a second filling portion and a shielding portion; forming a polysilicon layer on the shielding portion; forming a recess in the silicon substrate on the side away from the silicon surface; and removing the first filling portion, the second filling portion and part of the shielding portion so that the recess is brought into communication with the cavity to form a back chamber, and that the polysilicon layer, the remainder of the shielding portion and the silicon substrate together delimit a hollow chamber, the hollow chamber communicating with the opening of the plurality of acoustic holes away from the cavity, completing the MEMS microphone.

公开(公告)号：US11974111B2

公开(公告)日：2024-04-30

申请号：US17631358

申请日：2020-07-29

申请人： Polk Audio LLC

发明人： Sean O'Brien ,  Stuart W. Lumsden

IPC分类号： H04R7/12 ,  H04R7/26 ,  H04R31/00

CPC分类号： H04R7/125 ,  H04R7/26 ,  H04R31/003

摘要： A loudspeaker transducer diaphragm or cone (e.g., 201, 301 or 401) is configured with arcuate protrusions that project distally from the main forward or distal surface 230 to provide stiffening and a break-up of resonant vibration modes when the loudspeaker is in use. The protrusions (e.g., 210, 310 or 410) are convex on one surface 230 and concave on the opposite surface 234, so their average thickness is similar to the frustoconical areas of the cone, i.e. they are shell-like in nature rather than solid mounds or walls. The protrusions 210 are generally curved as they run radially from the inner opening 204 to the outer peripheral edge to encourage modal break-up (suppressing strong vibrational modes, e.g., as in region 155).

公开(公告)号：US20240117154A1

公开(公告)日：2024-04-11

申请号：US17767661

申请日：2019-12-25

申请人： Goertek Inc.

发明人： WEIFENG PENG ,  Fengguang Ling ,  Chun Li ,  Chunla Liu

IPC分类号： C08K13/02 ,  H04R7/02 ,  H04R31/00

CPC分类号： C08K13/02 ,  H04R7/02 ,  H04R31/003 ,  H04R2307/023 ,  H04R2307/025

摘要： Disclosed are a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes at least one elastomer layer, wherein the elastomer layer is made of butadiene rubber; the butadiene rubber is any one of nickel butadiene rubber, rare earth butadiene rubber and cobalt butadiene rubber, and a content of cis-form is greater than 80% to 100%. The vibrating diaphragm of the present disclosure can maintain excellent acoustic performance under extreme conditions of low temperature. (FIG. 1)

公开(公告)号：US11956581B2

公开(公告)日：2024-04-09

申请号：US17902239

申请日：2022-09-02

申请人： Cochlear Limited

发明人： Joris Walraevens ,  Patrik Kennes ,  Vicente Osorio ,  Stijn Eeckhoudt ,  Koen Erik Van den Heuvel

IPC分类号： A61N1/36 ,  A61N1/05 ,  H04R1/02 ,  H04R1/08 ,  H04R1/22 ,  H04R25/00 ,  H04R31/00

CPC分类号： H04R1/08 ,  A61N1/0541 ,  A61N1/36038 ,  H04R1/02 ,  H04R1/222 ,  H04R25/405 ,  H04R25/604 ,  H04R25/606 ,  H04R31/003 ,  H04R2201/003 ,  H04R2225/41 ,  H04R2225/67 ,  H04R2410/05

摘要： Disclosed examples generally include methods and apparatuses related to microphone units, such as may be found in implantable medical devices (e.g., cochlear implants). Microphone units generally include a microphone element connected to a chamber having a concave floor with the chamber covered by a membrane. Microphone units can be configured to produce an output based on pressure waves (e.g., sound waves) that reach the membrane. In an example, a microphone unit has a pressurized gas within the chamber below the membrane such that, while in a static state, the membrane deflects away from the chamber floor.

公开(公告)号：US20240064473A1

公开(公告)日：2024-02-22

申请号：US18487662

申请日：2023-10-16

申请人： ROHM CO., LTD.

发明人： Tatsuya SUZUKI ,  Yoshikazu FUJIMORI

IPC分类号： H04R17/02 ,  H04R7/04 ,  H04R7/18 ,  H04R31/00

CPC分类号： H04R17/02 ,  H04R7/04 ,  H04R7/18 ,  H04R31/003 ,  H04R2201/003

摘要： A transducer includes a supporting body that has a cavity, a vibrating film that is provided facing the cavity and capable of vibrating in the facing direction, and a piezoelectric element at least a portion of which is formed on a front surface of the vibrating film at an opposite side to the cavity. The vibrating film has, at a portion of an outer peripheral edge of the vibrating film, a connection portion connected to the supporting body and the vibrating film has a non-line-symmetrical shape with respect to a straight line that extends along the front surface of the vibrating film and is orthogonal to a line joining both ends of the connection portion.

公开(公告)号：US11905167B2

公开(公告)日：2024-02-20

申请号：US17932409

申请日：2022-09-15

申请人： Infineon Technologies AG

发明人： Wolfgang Klein ,  Evangelos Angelopoulos ,  Stefan Barzen ,  Marc Fueldner ,  Stefan Geissler ,  Matthias Friedrich Herrmann ,  Ulrich Krumbein ,  Konstantin Tkachuk ,  Giordano Tosolini ,  Juergen Wagner

IPC分类号： B81C1/00 ,  B81B3/00 ,  B81B7/02 ,  H04R1/08 ,  H04R7/02 ,  H04R7/08 ,  H04R31/00

CPC分类号： B81C1/00158 ,  B81B3/0021 ,  B81B7/02 ,  B81C1/00103 ,  H04R1/08 ,  H04R7/02 ,  H04R7/08 ,  H04R31/003 ,  B81B2201/0257 ,  B81B2203/0127 ,  B81B2203/0384 ,  B81C2201/013 ,  H04R2201/003

摘要： A microfabricated structure includes a perforated stator; a first isolation layer on a first surface of the perforated stator; a second isolation layer on a second surface of the perforated stator; a first membrane on the first isolation layer; a second membrane on the second isolation layer; and a pillar coupled between the first membrane and the second membrane, wherein the first isolation layer includes a first tapered edge portion having a common surface with the first membrane, wherein the second isolation layer includes a first tapered edge portion having a common surface with the second membrane, and wherein an endpoint of the first tapered edge portion of the first isolation layer is laterally offset with respect to an endpoint of the first tapered edge portion of the second isolation layer.

公开(公告)号：US20240048910A1

公开(公告)日：2024-02-08

申请号：US18220041

申请日：2023-07-10

申请人： Thomas O'Brien ,  Martial Andre Robert Rousseau

发明人： Thomas O'Brien ,  Martial Andre Robert Rousseau

IPC分类号： H04R7/12 ,  H04R1/28 ,  H04R31/00

CPC分类号： H04R7/125 ,  H04R1/288 ,  H04R31/003 ,  H04R2307/027 ,  H04R2307/029

摘要： A loudspeaker diaphragm (12) comprising a woven fibre body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fibre body may be formed of lengths (14) non-metallic fibre material (for example glass fibre) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be less than the mass of the woven fibre body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration whilst providing a flatter frequency-response curve (50).