Acoustic Wave Patents (Class 257/416)
  • Patent number: 11939212
    Abstract: A MEMS device is provided. The MEMS device includes a substrate having at least one contact, a first dielectric layer disposed on the substrate, at least one metal layer disposed on the first dielectric layer, a second dielectric layer disposed on the first dielectric layer and the metal layer and having a recess structure, and a structure layer disposed on the second dielectric layer and having an opening. The opening is disposed on and corresponds to the recess structure, and the cross-sectional area at the bottom of the opening is smaller than the cross-sectional area at the top of the recess structure. The MEMS device also includes a sealing layer, and at least a portion of the sealing layer is disposed in the opening and the recess structure. The second dielectric layer, the structure layer, and the sealing layer define a chamber.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: March 26, 2024
    Assignee: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Heng-Chung Chang, Jhih-Jie Huang, Chih-Ya Tsai, Jing-Yuan Lin
  • Patent number: 11910155
    Abstract: The present disclosure discloses a MEMS speaker including a housing with a receiving space; a MEMS speaker chip with an inner cavity, accommodated in the receiving space and connected with the housing, the MEMS speaker chip dividing the receiving space into a first cavity and a second cavity communicating with the inner cavity; a sound hole communicating with the first cavity or the second cavity; and a damping mesh connected to the housing and covering the sound hole; wherein sounds emitted by the MEMS speaker chip transmit outward through the sound hole and the damping mesh. Compared with the related art, MEMS speaker disclosed by the present disclosure has a better reliability.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: February 20, 2024
    Assignee: AAC Kaital Technologies (Wuhan) CO., LTD
    Inventors: Qiang Dan, Yiwei Zhou, Yu Shen, Yang Li
  • Patent number: 11897761
    Abstract: In one example, an electronic device includes a semiconductor sensor device having a cavity extending partially inward from one surface to provide a diaphragm adjacent an opposite surface. A barrier is disposed adjacent to the one surface and extends across the cavity, the barrier has membrane with a barrier body and first barrier strands bounded by the barrier body to define first through-holes. The electronic device further comprises one or more of a protrusion pattern disposed adjacent to the barrier structure, which can include a plurality of protrusion portions separated by a plurality of recess portions; one or more conformal membrane layers disposed over the first barrier strands; or second barrier strands disposed on and at least partially overlapping the first barrier strands. The second barrier strands define second through-holes laterally offset from the first through-holes. Other examples and related methods are also disclosed herein.
    Type: Grant
    Filed: June 6, 2022
    Date of Patent: February 13, 2024
    Assignee: Amkor Technology Singapore Holding Pte. Ltd.
    Inventors: Ki Yeul Yang, Kyung Han Ryu, Seok Hun Yun, Bora Baloglu, Hyun Cho, Ramakanth Alapati
  • Patent number: 11889248
    Abstract: The present invention provides a MEMS microphone, including: a base with a back cavity; and an electric capacitance system arranged on the base. The electric capacitance system includes a back plate, a first diaphragm and a second diaphragm opposite to the back plate and arranged on an upper and lower sides of the back plate. The MEMS microphone further includes an insulation layer isolating the base, the back plate, the first diaphragm and the second diaphragm, and a sealing space formed between the first diaphragm and the second diaphragm. The pressure in the sealing space is equal to an external pressure.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: January 30, 2024
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Zhenkui Meng, Zhengyan Liu
  • Patent number: 11876079
    Abstract: The provides a method for fabricating a semiconductor device including performing a bonding process to bond a second die onto a first die including a pad layer, forming a through-substrate opening along the second die and extending to the pad layer in the first die, conformally forming an isolation layer in the through-substrate opening, performing a punch etch process to remove a portion of the isolation layer and expose a portion of a top surface of the pad layer, performing an isotropic etch process to form a recessed space extending from the through substrate opening and in the pad layer, conformally forming a barrier layer in the through-substrate opening and the recessed space, and forming a filler layer in the through-substrate opening and the recessed space.
    Type: Grant
    Filed: November 24, 2021
    Date of Patent: January 16, 2024
    Assignee: NANYA TECHNOLOGY CORPORATION
    Inventor: Shing-Yih Shih
  • Patent number: 11814284
    Abstract: The application relates to structures, e.g. substrates for supporting semiconductor die. The substrate defines a frame which lateral surrounds one or more die and is provided in contact with at least one side surface of the die, wherein the frame defines upper and lower surfaces of the substrate.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: November 14, 2023
    Assignee: Cirrus Logic Inc.
    Inventors: Roberto Brioschi, Rkia Achehboune
  • Patent number: 11770658
    Abstract: Provided is a sensor interface including a first cantilever beam bundle including at least one resonator and a first output terminal, a second cantilever beam bundle including at least one resonator and a second output terminal, and a differential amplifier including a first input terminal electrically connected to the first output terminal of the first cantilever beam bundle and a second input terminal electrically connected to the second output terminal of the second cantilever beam bundle.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: September 26, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyunwook Kang, Sungchan Kang, Cheheung Kim, Choongho Rhee, Hyeokki Hong
  • Patent number: 11750980
    Abstract: A MEMS device and a method of manufacturing the same are provided. A semiconductor device includes a substrate; and a membrane over the substrate and configured to generate charges in response to an acoustic wave, the membrane being in a polygonal shape including vertices. The membrane includes a via pattern having first lines that partition the membrane into slices and extend to the vertices of the membrane such that the slices are separated from each other near an anchored region of the membrane and connected to each other around a central region. The via pattern further includes second lines extending from the anchored region of the membrane toward the central region of the membrane. Each of the second lines includes a length less than a length of each of the first lines.
    Type: Grant
    Filed: July 27, 2022
    Date of Patent: September 5, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Chun-Wen Cheng, Chun Yin Tsai, Chia-Hua Chu
  • Patent number: 11671765
    Abstract: A Micro-Electro-Mechanical System (MEMS) device includes a substrate, and a first sacrificial layer, a first conductive film, a second sacrificial layer, and a second conductive film successively laminated on the substrate, the second sacrificial layer being provided with a cavity; and further includes an amplitude-limiting layer provided with a first through hole and an isolation layer provided with a second through hole. The amplitude-limiting layer is located between the first conductive film and the first sacrificial layer and the isolation layer is located between the amplitude-limiting layer and the first conductive film, and/or the amplitude-limiting layer is located on the second conductive film and the isolation layer is located between the amplitude-limiting layer and the second conductive film. The amplitude-limiting layer extends to a projection region of an opening of the cavity and is in a suspended state.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: June 6, 2023
    Assignee: CSMC TECHNOLOGIES FAB2 CO., LTD.
    Inventors: Yonggang Hu, Guoping Zhou, Changfeng Xia
  • Patent number: 11652069
    Abstract: The present disclosure relates to semiconductor structures, and more particularly, to crackstop structures and methods of manufacture. The structure includes: a die matrix comprising a plurality of dies separated by at least one scribe lane; and a crackstop structure comprising at least one line within the at least one scribe lane between adjacent dies of the plurality of dies.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: May 16, 2023
    Assignee: GLOBALFOUNDRIES Singapore Pte. Ltd.
    Inventors: Ranjan Rajoo, Frank G. Kuechenmeister, Dirk Breuer
  • Patent number: 11538767
    Abstract: An integrated circuit includes a lead frame, a first die, and a second die. The first die is bonded to and electrically connected to the lead frame. The second die is electrically connected to and spaced apart from the first die.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: December 27, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Barry Jon Male, Paul Merle Emerson, Kurt Peter Wachtler
  • Patent number: 11533565
    Abstract: A MEMS microphone includes a substrate having an opening, a first diaphragm, a first backplate, a second diaphragm, and a backplate. The first diaphragm faces the opening in the substrate. The first backplate includes multiple accommodating-openings and it is spaced apart from the first diaphragm. The second diaphragm joints the first diaphragm together at multiple locations by pillars passing through the accommodating-openings in the first backplate. The first backplate is located between the first diaphragm and the second diaphragm. The second backplate includes at least one vent hole and it is spaced apart from the second diaphragm. The second diaphragm is located between the first backplate and the second backplate.
    Type: Grant
    Filed: June 17, 2021
    Date of Patent: December 20, 2022
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Wen Cheng, Chia-Hua Chu, Wen-Tuan Lo
  • Patent number: 11510647
    Abstract: A backing member includes: a resin body including a lower surface and an upper surface opposite to each other; a plurality of leads each of which extends in a first direction from the lower surface toward the upper surface, and that are embedded at pitches in the resin body; and a plurality of insulating spacers each of which is provided between adjacent ones of the leads and extends in a second direction intersecting with the first direction, and that contact the leads.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 29, 2022
    Assignee: SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventor: Sumihiro Ichikawa
  • Patent number: 11516569
    Abstract: A capacitive microphone includes a substrate, a plurality of stationary electrodes, a diaphragm, and a backplate. The substrate includes a cavity and a step disposed in the cavity, and the plurality of stationary electrodes is equally spaced on the step. A diaphragm is received in the step and includes a vibration portion and a connecting portion connected to the vibration portion. A plurality of movable electrodes protrudes from a periphery of the vibration portion, and one end of the connecting portion away from the vibration portion is connected to the substrate. The backplate is provided with a plurality of sound transmission holes, and a gap is formed between the backplate and the diaphragm to form electrode plates of a variable capacitor. The capacitive microphone can get a higher signal-to-noise ratio, improve the capability of suppressing linear distortion, and improve the anti-interference capability of the microphone.
    Type: Grant
    Filed: June 8, 2021
    Date of Patent: November 29, 2022
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventor: Yannick Pierre Kervran
  • Patent number: 11505453
    Abstract: A sensor includes a membrane electrode, a counter-electrode, and at least one spring. The sensor can include a structure; a membrane electrode, which is deformable as a consequence of pressure and which is in contact with the structure; a counter-electrode mechanically connected to the structure and separated from the membrane electrode by a gap; and at least one spring mechanically connected to the membrane electrode and the counter-electrode, so as to exert an elastic force between the membrane electrode and the counter-electrode.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: November 22, 2022
    Assignee: INFINEON TECHNOLOGIES AG
    Inventor: Stefan Barzen
  • Patent number: 11502710
    Abstract: A front-end module includes: a substrate including a first connection member in which at least one first insulating layer and at least one first wiring layer are alternately stacked, a second connection member in which at least one second insulating layer and at least one second wiring layer are alternately stacked, and a core member disposed between the first and second connection members; a radio-frequency component mounted on a surface of the substrate and configured to amplify a main band of an input RF signal or filter bands outside the main band; an inductor disposed on a surface of the core member and electrically connected to the radio-frequency component; and a ground plane disposed on another surface of the core member. The core member includes a core insulating layer thicker than an insulating layer among at least one first insulating layer and the at least one second insulating layer.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: November 15, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Kang Ta Jo, Seong Jong Cheon, Se Jong Kim, Ho Taek Song, Jang Ho Park, Yoo Sam Na, Jae Hyouck Choi, Young Sik Hur
  • Patent number: 11477581
    Abstract: A micro-electro-mechanical system, MEMS, microphone assembly comprises an enclosure defining a first cavity, and a MEMS microphone arranged inside the first cavity. The microphone comprises a first die with bonding structures and a MEMS diaphragm, and a second die having an application specific integrated circuit, ASIC. The second die is bonded to the bonding structures such that a gap is formed between a first side of the diaphragm and the second die, with the gap defining a second cavity. The first side of the diaphragm is interfacing with the second cavity and a second side of the diaphragm is interfacing with the environment via an acoustic inlet port of the enclosure. The bonding structures are arranged such that pressure ventilation openings are formed that connect the first cavity and the second cavity.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: October 18, 2022
    Assignee: AMS AG
    Inventors: Goran Stojanovic, Colin Steele, Simon Mueller, Thomas Froehlich, Erik Jan Lous, Anderson Pires Singulani
  • Patent number: 11442571
    Abstract: A touch surface device, comprising at least: an element comprising a first face forming the touch surface and a second face opposite to the first face; an acoustic wave sensor including at least one portion of piezoelectric material disposed between two electrodes, the portion of piezoelectric material and both electrodes being structured by forming surface wavinesses as wrinkles, the sensor being secured to the second face of the element such that apexes or valleys of the wrinkles are in contact with the second face of the element; an electronic circuit coupled to the electrodes of the sensor and configured to identify, from an electric signal intended to be outputted from the electrodes of the sensor, at least one touch gesture made on the touch surface.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: September 13, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Lamine Benaissa, Jean-Sebastien Moulet
  • Patent number: 11418887
    Abstract: A MEMS device and a method of manufacturing the same are provided. A semiconductor device includes a substrate and a membrane over the substrate. The membrane includes a piezoelectric material configured to generate charges in response to an acoustic wave. The membrane includes a via pattern having first lines that partition the membrane into slices such that the slices are separated from each other at a first region near an edge of the membrane and connected to each other at a second region.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: August 16, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Chun-Wen Cheng, Chun Yin Tsai, Chia-Hua Chu
  • Patent number: 11418873
    Abstract: An acoustic microphone assembly for surveillance into a protected space includes a microphone including a transducer and a diagram adapted for picking up acoustic sound waves, electronic circuitry for processing input, a power source, and an audio output wire or trace for delivering processed digital sound to a sound system, a cover plate having at least two bolt openings for mounting to a base plate on a wall or structure the cover plate covering an opening there through into the protected space, the cover plate accepting an orthogonal mounting of the microphone, and a sound diffraction pattern of different sized openings placed through the cover plate, the sound diffraction pattern located in alignment to the mounted microphone head and having a foot print roughly equal to the circumference of the head of the microphone.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: August 16, 2022
    Inventor: Edward J. Simon
  • Patent number: 11395057
    Abstract: The waterproof sound-transmitting member of the present disclosure includes: a waterproof sound-transmitting membrane configured to prevent entry of water while permitting sound to pass therethrough, and a support layer joined to a main surface of the waterproof sound-transmitting membrane. The waterproof sound-transmitting membrane has an air permeability of 10,000 seconds/100 mL or more as expressed by Gurley number, the support layer includes a resin foam material and has a through hole extending in a thickness direction thereof and serving as a path for sound transmitted through the waterproof sound-transmitting membrane, and a side air permeability of the support layer between the through hole and an outer peripheral side surface of the support layer when the support layer is compressed in the thickness direction thereof at a compression ratio of 20% is 0.1 mL/(min·mm3) or more as a value per unit volume of the support layer.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: July 19, 2022
    Assignee: NITTO DENKO CORPORATION
    Inventors: Yosuke Sugaya, Bunta Hirai, Takeo Inoue
  • Patent number: 11383970
    Abstract: In one example, an electronic device can comprise (a) a first substrate comprising a first encapsulant extending from the first substrate bottom side to the first substrate top side, and a first substrate interconnect extending from the substrate bottom side to the substrate top side and coated by the first encapsulant, (b) a first electronic component embedded in the first substrate and comprising a first component sidewall coated by the first encapsulant, (c) a second electronic component coupled to the first substrate top side, (d) a first internal interconnect coupling the second electronic component to the first substrate interconnect, and (e) a cover structure on the first substrate and covering the second component sidewall and the first internal interconnect. Other examples and related methods are also disclosed herein.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: July 12, 2022
    Assignee: AMKOR TECHNOLOGY SINGAPORE HOLDING PTE. LTD.
    Inventor: Sung Jae Oh
  • Patent number: 11381923
    Abstract: A MEMS transducer includes a first and a second differential MEMS sensor device. The first differential MEMS sensor device includes a first and a second electrode structure for providing a first differential output signal, and a third electrode structure between the first and second electrode structure. The second differential MEMS sensor device includes a first and second electrode structure for providing a second differential output signal, and a third electrode structure between the first and second electrode structure. A biasing circuit provides the third electrode structure of the first differential MEMS sensor device with a first biasing voltage and provides the third electrode structure of the second differential MEMS sensor device with a second biasing voltage. A read-out circuitry combines the first and second differential output signal in an anti-parallel manner.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: July 5, 2022
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Andreas Wiesbauer, Pedro Augusto Borrego Lambin Torres Amaral, Alessandro Caspani, Niccoló De Milleri, Marc Fueldner
  • Patent number: 11350218
    Abstract: A piezoelectric microelectromechanical acoustic transducer, having a semiconductor substrate with a frame portion and a through cavity defined internally by the frame portion; an active membrane, suspended above the through cavity and anchored, at a peripheral portion thereof, to the frame portion of the substrate by an anchorage structure, a plurality of piezoelectric sensing elements carried by a front surface of the active membrane so as to detect mechanical stresses of the active membrane; a passive membrane, suspended above the through cavity, underneath the active membrane, interposed between the through cavity and a rear surface of the active membrane; and a pillar element, which fixedly couples, and is centrally interposed between, the active membrane and the passive membrane. A ventilation hole passes through the entire active membrane, the passive membrane and the pillar element to set the through cavity in fluidic communication with the front surface of the active membrane.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: May 31, 2022
    Assignee: STMicroelectronics S.r.l.
    Inventors: Fabrizio Cerini, Silvia Adorno
  • Patent number: 11350220
    Abstract: A MEMS package has a MEMS chip, a package substrate which the MEMS chip is adhered, a chip cover which wraps the MEMS chip, and a pressure regulation film which is adhered to the front surface of the chip cover. The chip cover has a vent which is formed in a chip outside area, arranged outside than the MEMS chip, the pressure regulation film has a slit. The slit is arranged in the neighborhood of the vent and the vent is covered with the pressure regulation film.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: May 31, 2022
    Assignee: SAE Magnetics (H.K.) Ltd.
    Inventors: Masashi Shiraishi, Hironobu Hayashi, Toyotaka Kobayashi
  • Patent number: 11337009
    Abstract: A piezoelectric MEMS microphone is disclosed. The microphone includes a base having a cavity; a piezoelectric diaphragm; a fixation beam connecting with the piezoelectric diaphragm; and a support beam connecting with the base and the fixation beam. The piezoelectric diaphragm has a number of diaphragm sheets fixed by the fixation beam, each diaphragm sheet having a fixed end and a free end. The fixed end is connected with the fixation beam, and the free end extends from the fixed end to two sides and is suspended above the cavity. Compared with the related art, mechanical strength of the diaphragm sheet is improved, and the output intensity of the signal is improved.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: May 17, 2022
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Lian Duan, Rui Zhang
  • Patent number: 11323089
    Abstract: Acoustic resonator devices and filters are disclosed. An acoustic resonator includes a substrate having a trap-rich region adjacent to a surface and a single-crystal piezoelectric plate having parallel front and back surfaces, the back surface attached to the surface of the substrate except for a portion of the piezoelectric plate forming a diaphragm that spans a cavity in the substrate. An interdigital transducer (IDT) is formed on the front surface of the single-crystal piezoelectric plate such that interleaved fingers of the IDT are disposed on the diaphragm. The single-crystal piezoelectric plate and the IDT are configured such that a radio frequency signal applied to the IDT excites a shear primary acoustic mode within the diaphragm.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: May 3, 2022
    Assignee: Resonant Inc.
    Inventor: Patrick Turner
  • Patent number: 11312616
    Abstract: A structure of micro-electro-mechanical-system (MEMS) microphone includes a substrate, having a first opening. A dielectric layer is disposed on the substrate, wherein the dielectric layer has a second opening aligned to the first opening. A membrane is disposed within the second opening of the dielectric layer. A peripheral region of the membrane is embedded into the dielectric layer at sidewall of the second opening. A backplate layer is disposed on the dielectric layer. The backplate layer includes a protection layer, having a peripheral region disposed on the dielectric layer and a central region with venting holes over the second opening. The central region of the protection layer further has anti-sticky structures at a side of the protection layer toward the membrane. An electrode layer is disposed on the side of the protection layer, surrounding the anti-sticky structures.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: April 26, 2022
    Assignee: Solid State System Co., Ltd.
    Inventors: Tsung-Min Hsieh, Chien-Hsing Lee, Cheng-Wei Tsai
  • Patent number: 11310600
    Abstract: An acoustic transducer for generating electrical signals in response to acoustic signals includes a transducer substrate, a back plate, and a diaphragm assembly. The diaphragm assembly includes a first diaphragm and a second diaphragm coupled thereto. The second diaphragm is positioned closer to the back plate than the first diaphragm. The second diaphragm includes a plurality of diaphragm apertures configured to allow air to pass through the second diaphragm. Each of the back plate and the first diaphragm are coupled to the transducer substrate at their periphery. In an embodiment, the transducer includes a post coupled to the first diaphragm and the second diaphragm, the post configured to prevent movement of the second diaphragm relative to the first diaphragm in a direction substantially perpendicular to the second diaphragm.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: April 19, 2022
    Assignee: KNOWLES ELECTRONICS, LLC
    Inventors: Vahid Naderyan, Sung Bok Lee, Michael Kuntzman
  • Patent number: 11310591
    Abstract: An electronic device has an acoustic transducer with an acoustic diaphragm. The diaphragm has opposed first and second major surfaces. A front volume is positioned adjacent the first major surface. A back volume is positioned adjacent the second major surface. An elongated channel defines a barometric vent and extends from a first end fluidly coupled with the front volume to a second end fluidly coupled with the back volume, fluidly coupling the front volume with the back volume. The elongated channel may have a high aspect ratio (L/D), providing the vent with a substantial air mass. The elongated channel may be segmented to define a higher-order filter. For example, a segmented channel can have a cascade of repeating acoustic-mass and acoustic-compliance units, providing the barometric vent with additional degrees-of-freedom for tuning.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: April 19, 2022
    Assignee: Apple Inc.
    Inventors: Peter C. Hrudey, Justin D. Crosby, Gokhan Hatipoglu
  • Patent number: 11299393
    Abstract: An exemplary microelectromechanical system (MEMS) device comprises a plurality of stacked layers, including at least one layer that includes micromechanical components that respond to a force to be measured. Two of the layers may include respective first and second external electrical connection points. A plurality of conductive paths may be disposed in a continuous manner over an external surface of each of the plurality of layers between the first and second external electrical connection points.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: April 12, 2022
    Assignee: INVENSENSE, INC.
    Inventor: Peter George Hartwell
  • Patent number: 11297441
    Abstract: The present disclosure discloses a microphone, comprising: a first substrate, the first substrate having an inner cavity open at one end, wherein the microphone further comprises a vibration diaphragm and at least one cantilever which are provided to the first substrate and suspended above the inner cavity. The cantilever is separated from the vibration diaphragm by a spacing portion, and the vibration diaphragm and the inner cavity of the first substrate define an acoustically sealed cavity; and a detection structure is provided to the vibration diaphragm and the cantilever. The structural design of the cantilever is adopted, so that the space between the vibration diaphragm and the cantilever is open, the airflow can smoothly pass by the cantilever, and further the signal-to-noise ratio of the microphone can be greatly improved.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: April 5, 2022
    Assignees: Goertek, Inc., Qingdao Research Institute of Beihang Univerity
    Inventors: Quanbo Zou, Qunwen Leng, Zhe Wang
  • Patent number: 11288716
    Abstract: Systems and methods for digital wallet transit payments are disclosed. According to one embodiment, a method for managing transit payments using a digital wallet may include (1) receiving, at a receiver associated with a vehicle and at a first vehicle location, a first communication from a mobile electronic device associated with a traveler comprising an identification of a payment instrument from a traveler's digital wallet, the first communication received before the traveler begins a trip in the vehicle; (2) receiving, at the receiver and at second vehicle location, a second communication from a mobile device at a conclusion of the trip; (3) a computer processor calculating a fare based on a travelled distance between the first vehicle location and the second vehicle location; and (4) the computer processor automatically submitting a transaction request for the fare to an issuer of the payment instrument.
    Type: Grant
    Filed: November 4, 2016
    Date of Patent: March 29, 2022
    Assignee: JPMORGAN CHASE BANK, N.A.
    Inventors: James David Porterfield, Ryan Andrew Schlosser
  • Patent number: 11272296
    Abstract: A dual membrane microphone is disclosed. In an embodiment, a MEMS microphone includes a first membrane, a backplate with a separated central area including a first backplate electrode on a lower portion of the backplate, a second backplate electrode on a upper portion of the backplate and a backplate insulation layer galvanically isolating the first and the second backplate electrodes, a second membrane and a coupling central portion, wherein the first membrane couples mechanically to the separated central area of the backplate in an electrically isolating manner and the separated central area of the backplate couples to the second membrane in an electrically isolating manner.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: March 8, 2022
    Inventor: Pirmin Hermann Otto Rombach
  • Patent number: 11265657
    Abstract: The invention provides a piezoelectric micro-electromechanical system (MEMS) microphone includes a base with a cavity and a piezoelectric diaphragm arranged on the base. The base has a ring base and a support column. The piezoelectric diaphragm includes a plurality of diaphragm sheets. Each diaphragm sheet has a fixing end connected with the support column and a free end suspended above the cavity. The widths of the diaphragm sheets are gradually increased from the fixing ends to the free ends. According to the piezoelectric MEMS microphone provided by the invention, under sound pressure, the free ends vibrate, wide free ends drive short fixing ends, and the diaphragm sheets close the fixing ends generate greater deformation to generate more charge. Therefore, the sensitivity can be further improved.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: March 1, 2022
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Lian Duan, Rui Zhang, Zhiyuan Chen
  • Patent number: 11254565
    Abstract: Implementations of absolute pressure sensor devices may include a microelectromechanical system (MEMS) absolute pressure sensor coupled over a controller die. The MEMS absolute pressure sensor may be mechanically coupled to the controller die and may also be configured to electrically couple with the controller die. A perimeter of the controller die may be one of the same size and larger than a perimeter of the MEMS absolute pressure sensor. The controller die may be configured to electrically couple with a module through an electrical connector.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 22, 2022
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventor: Michael J. Seddon
  • Patent number: 11245379
    Abstract: In an elastic wave device, an IDT electrode is disposed on a piezoelectric substrate and includes a close contact layer, which includes first and second main surfaces and side surfaces. The first main surface is in contact with the piezoelectric substrate, and at least two electrode layers are disposed on the close contact layer. The at least two electrode layers include a first electrode layer and a second electrode layer. The first electrode layer is made of a material that has a higher density than that of Al. The second electrode layer has a lower density than the first electrode layer. One of the at least two electrode layers has higher weather resistance than the close contact layer and covers the side surfaces of the close contact layer.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: February 8, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Chihiro Konoma
  • Patent number: 11212617
    Abstract: The present invention provides a piezoelectric MEMS microphone having a base with a cavity, a piezoelectric diaphragm, and a restraining element. The base has a ring base circumferentially forming a cavity, a support column. The piezoelectric diaphragm includes diaphragm sheets each having a fixing end connected to a support column and a free end suspended over the cavity. The restraining element has one end fixedly connected to the free end, the other end connected to the part on the base that is not connected to the fixing end. The piezoelectric MEMS microphone of the invention can constrain the deformation of the diaphragm sheet, thereby improving the resonant frequency of the piezoelectric diaphragm, reducing the noise of the whole piezoelectric MEMS microphone.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: December 28, 2021
    Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Lian Duan, Rui Zhang, Zhiyuan Chen
  • Patent number: 11212623
    Abstract: The invention provides a piezoelectric micro-electromechanical systems (MEMS) microphone having a base with a cavity, a piezoelectric diaphragm, and a limit element. The base has a ring base, and a support column. The piezoelectric diaphragm includes diaphragm sheets. Each diaphragm sheet have a fixing end connected with the support column and a free end suspended above the cavity. The limit element includes a limit part arranged apart from the piezoelectric diaphragm to limit the free ends in vibration directions of the diaphragm sheets, and an edge fixing plate connected with the outer edge of the limit part and arranged on the ring base. When the diaphragm sheets greatly deform upwards under impact force, deformation of the diaphragm sheets can be controlled, and the diaphragm sheets are protected to prevent the diaphragm sheets from breaking, thereby improving the stability of the piezoelectric MEMS microphone.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: December 28, 2021
    Assignee: AAC ACOUSTIC TECHNOLOGIES (SHENZHEN) CO., LTD.
    Inventors: Lian Duan, Rui Zhang, Zhiyuan Chen
  • Patent number: 11206493
    Abstract: A micro electro mechanical system (MEMS) microphone includes a first membrane, a second membrane, a third membrane disposed between the first membrane and the second membrane, a first cavity disposed between the first membrane and the third membrane and surrounded by a first wall, a second cavity disposed between the second membrane and the third membrane and surrounded by a second wall, and one or more first supports disposed in the first cavity and connecting the first membrane and the third membrane.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: December 21, 2021
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.
    Inventors: Chen Hsiung Yang, Chun-Wen Cheng, Chia-Hua Chu, En-Chan Chen
  • Patent number: 11197088
    Abstract: A MEMS transducer includes a transducer substrate, a back plate, a diaphragm, and an intermediate layer. The transducer substrate includes an aperture. The back plate is coupled to a first surface of the transducer substrate and covers the aperture. The diaphragm is oriented substantially parallel to the back plate and is spaced apart from the back plate to form a gap. The intermediate layer is coupled to the diaphragm and the back plate and includes an acoustic relief channel, which fluidly couples the gap to an environment surrounding the MEMS transducer.
    Type: Grant
    Filed: May 10, 2020
    Date of Patent: December 7, 2021
    Assignee: Knowles Electronics, LLC
    Inventors: Vahid Naderyan, Mohammad Mohammadi, Evan Llamas-Young
  • Patent number: 11172306
    Abstract: Disclosed are a vibration system, a panel speaker and an active noise reduction wearable electronic device. The vibration system includes a diaphragm body. The diaphragm body includes at least one vocalization film having a vocalization area, a reinforcement structure and a solid member. The vocalization film realizes vibration vocalization function. The reinforcement structure is provided at the vocalization area of the vocalization film to make the vocalization film remain flat at the vocalization area. The solid member is provided at other positions of the vocalization film except the vocalization area to increase strength of the diaphragm body.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: November 9, 2021
    Assignee: Shenzhen Ausounds Intelligent Co., Ltd.
    Inventor: Rui Qiu
  • Patent number: 11172313
    Abstract: A MEMS microphone integrates a temperature-sensing element in or on the ASIC die of a MEMS microphone to enable an audio mode and a temperature-sensing mode in parallel. The system also permits for a method for easily switching between these two modes and for outputting both digital output signals at the same common output pad, which allows for the use of the footprint of a conventional microphone.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: November 9, 2021
    Assignee: TDK Corporation
    Inventors: Lei Zou, Pirmin Hermann Otto Rombach, Henning Petersen
  • Patent number: 11158784
    Abstract: The present invention makes clear and defines a congruent composition of a langasite-based oxide, and establishes a method of manufacturing a crystal by any desired composition of AE3ME1+a(Ga1?xAlx)3+bSi2+cO14 (AE is an alkaline-earth metal, ME is Nb or Ta, 0?x?1, ?0.5<a?0 or 0<a<0.5, ?0.5<b?0 or 0<b?0.5, and ?0.5<c?0 or 0<c<0.5, excluding a=b=c=0). This makes it possible to suppress the formation of an impurity, and improve the yield and crystal manufacturing rate. The raw material is a raw material mixture prepared by mixing an alkaline-earth metal or its carbonate or oxide, Nb or Ta or its oxide, Ga or its oxide, Al or its oxide, and Si or its oxide.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: October 26, 2021
    Assignees: PIEZO STUDIO INC., TOHOKU UNIVERSITY
    Inventors: Akira Yoshikawa, Yuui Yokota, Yuji Ohashi, Kei Kamada, Tetsuo Kudo, Kenji Inoue, Yasuhiro Shoji, Yu Igarashi, Mototaka Arakawa, Shunsuke Kurosawa, Akihiro Yamaji
  • Patent number: 11159892
    Abstract: The invention relates to a sounding device having a first housing body with a first accommodation space, and a speaker box accommodated into the first housing body. The speaker box includes a second housing body with a second accommodation space, and a speaker unit accommodated in the second housing body. The speaker unit divides the second accommodation space into a front acoustic cavity. The sounding device further comprises a one-way intake valve. The speaker box, serving as a fan in a mobile terminal, pushes air circulation inside and outside the mobile terminal, thereby achieving a heat dissipation effect and facilitating internal cooling of the mobile terminal.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: October 26, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Xingzhi Huang, Lin Liu, Dijiang Tong, Zhe Zhang, Jun Wu, Zhichen Chen, Zhaoyu Yin
  • Patent number: 11134325
    Abstract: A microphone assembly has an interconnect substrate and a microphone transducer coupled with the substrate. A lid overlies the microphone transducer. At least a portion of the lid is spaced from the substrate, defining an acoustic chamber for the microphone transducer. The lid can have a layer of discretized metal or other patterned conductor. The discretized layer of metal or other patterned conductor is configured to inhibit formation of eddy currents, as when exposed to electromagnetic radiation. The lid can be grounded. Microphone modules and electronic devices also are described.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: September 28, 2021
    Assignee: Apple Inc.
    Inventors: Peter C. Hrudey, Anthony D. Minervini, Joseph R. Maurer
  • Patent number: 11128942
    Abstract: A sound transducer arrangement for generating and/or detecting sound waves in the audible wavelength spectrum includes an acoustic unit, which includes a vibratable diaphragm and a MEMS unit coupled to the diaphragm for generating and/or detecting a deflection of the diaphragm. The sound transducer arrangement includes a MEMS structure, which includes a support unit on which the MEMS unit and the acoustic unit are arranged. The support unit includes a metallic lead frame and a plastic body, with which the lead frame is partially circumferentially fused.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: September 21, 2021
    Assignee: USOUND GMBH
    Inventors: Ferruccio Bottoni, Andrea Rusconi Clerici Beltrami
  • Patent number: 11107858
    Abstract: An electronic device comprises a CMOS substrate having a first surface and a second surface opposite the first surface. A plurality of ultrasonic transducers is provided having a transmit/receive surface. A contact surface is piezoelectrically associated with the plurality of ultrasonic transducers and is formed on the first surface of the CMOS substrate. The plurality of ultrasonic transducers is disposed on the second surface of the CMOS substrate, with the transmit/receive side attached to the second surface thereof such that the CMOS substrate is between the plurality of ultrasonic transducers and the platen. An image sensing system is also provided, together with a method for ultrasonic sensing in the electronic device.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: August 31, 2021
    Assignee: InvenSense, Inc.
    Inventors: Renata Melamud Berger, Julius Ming-Lin Tsai, Stephen Lloyd
  • Patent number: 11101174
    Abstract: Methods for forming an interconnections structure on a substrate in a cluster processing system and thermal processing such interconnections structure are provided. In one embodiment, a method for a device structure for semiconductor devices includes forming a barrier layer in an opening formed in a material layer disposed on a substrate, forming an interface layer on the barrier layer, forming a gap filling layer on the interface layer, and performing an annealing process on the substrate, wherein the annealing process is performed at a pressure range greater than 5 bar.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: August 24, 2021
    Assignee: Applied Materials, Inc.
    Inventors: Hao Jiang, Nikolaos Bekiaris, Erica Chen, Mehul B. Naik
  • Patent number: 11078074
    Abstract: Processes for integrating complementary metal-oxide-semiconductor (CMOS) devices with microelectromechanical systems (MEMS) devices are provided. In some embodiments, the MEMS devices are formed on a sacrificial substrate or wafer, the sacrificial substrate or wafer is bonded to a CMOS die or wafer, and the sacrificial substrate or wafer is removed. In other embodiments, the MEMS devices are formed over a sacrificial region of a CMOS die or wafer and the sacrificial region is subsequently removed. Integrated circuit (ICs) resulting from the processes are also provided.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: August 3, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Chun-Wen Cheng, Chia-Hua Chu