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公开(公告)号：US20230097631A1
公开(公告)日：2023-03-30
申请号：US17584337
申请日：2022-01-25
发明人： Yuwei Liu , Rui Zhang , Zhenkui Meng
摘要： The invention provides a diaphragm and a preparation method thereof, and an MEMS microphone. The diaphragm includes a intermediate vibration part and a fixed part surrounding the vibration part. The vibration part includes multiple vibration sub-parts, which are distributed stepwise along the vibration direction of the diaphragm. Multiple vibration sub-parts are distributed stepwise along the vibration direction of diaphragm. The effective area of the diaphragm is increased, and the stress can be adjusted by the height of the ladder and its inclination angle. The mechanical sensitivity of the MEMS microphone containing this diaphragm is improved, resulting in a high-performance, small-sized MEMS microphone.
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公开(公告)号：US20230002219A1
公开(公告)日：2023-01-05
申请号：US17932409
申请日：2022-09-15
发明人： Wolfgang Klein , Evangelos Angelopoulos , Stefan Barzen , Marc Fueldner , Stefan Geissler , Matthias Friedrich Hermann , Ulrich Krumbien , Konstantin Tkachuk , Giordano Tosolini , Juergen Wagner
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.
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公开(公告)号：US11524891B2
公开(公告)日：2022-12-13
申请号：US17151392
申请日：2021-01-18
发明人： Wolfgang Klein , Evangelos Angelopoulos , Stefan Barzen , Marc Fueldner , Stefan Geissler , Matthias Friedrich Herrmann , Ulrich Krumbein , Konstantin Tkachuk , Giordano Tosolini , Juergen Wagner
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.
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公开(公告)号：US20220394394A1
公开(公告)日：2022-12-08
申请号：US17337434
申请日：2021-06-03
IPC分类号： H04R17/02 , H01L41/113 , H04R7/02
摘要： A microphone with an additional piezoelectric component for energy harvesting is provided, and includes a substrate penetrated through by a cavity, a diaphragm, and a piezoelectric conversion. The diaphragm includes a vibration portion and at least one connecting arm, and two ends of each of the at least one connecting arm are connected to the vibration portion and the substrate, respectively. The piezoelectric conversion component is disposed on one of the at least one connecting arm and configured to convert mechanical energy collected from a displacement of the diaphragm by sound to electrical energy. The piezoelectric conversion component is mounted on the diaphragm, so as to convert the mechanical energy collected from the diaphragm by the sound to the electrical energy, thereby effectively recycling the mechanical energy and avoiding a waste of energy.
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公开(公告)号：US20220386030A1
公开(公告)日：2022-12-01
申请号：US17767365
申请日：2019-12-25
申请人： Goertek Inc.
发明人： Shuqiang Wang , Fengguang Ling , Chun Li , Chunfa Liu
摘要： The present disclosure provides a vibrating diaphragm of a sound-producing apparatus and the sound-producing apparatus. The vibrating diaphragm includes a fluorosilicone rubber film layer, and the fluorosilicone rubber includes a linear polymer composed of a silica main chain and a side chain radical; a molecular structure of the polymer including a unit with the side chain radical with vinyl is a methyl vinyl siloxane unit, and a unit with the side chain radical with R1 is a fluorine-containing siloxane unit; and wherein n and m are natural numbers, and R1 comprises at least one of fluoroalkyl and fluoroaryl.
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公开(公告)号：US20220251253A1
公开(公告)日：2022-08-11
申请号：US17614205
申请日：2020-04-20
申请人： Goertek Inc.
发明人： Bing Hui , Shuqiang Wang , Fengguang Ling , Chun Li , Chunfa Liu
摘要： A diaphragm for a miniature sound generating device, wherein the diaphragm is made of a polyacrylate copolymer, a plasticizer is mixed in the polyacrylate copolymer, the polyacrylate copolymer is 100 parts by mass, and the plasticizer comprises at least one of aliphatic dibasic acid esters, phthalic acid esters, benzene polyacid esters, benzoic ethers, polyol esters, chlorinated hydrocarbons, epoxides, citrate esters and polyesters. The diaphragm possesses excellent sound performance.
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公开(公告)号：US11323820B2
公开(公告)日：2022-05-03
申请号：US16603125
申请日：2018-04-05
发明人： Robert Boesnecker
摘要： The invention relates to a mobile loudspeaker apparatus for playing back sound. Mobile loudspeaker systems are often disadvantageous in that they have a poor sound quality or require equipment for a good sound quality that is not easy to transport. A loudspeaker apparatus which firstly provides a good sound quality and secondly is also easily transportable is desirable. Previously, these two requirements were often mutually exclusive. By way of a bistable membrane, or a membrane that is stable in more than two states, said membrane being coupleable to the loudspeaker apparatus, it is possible to manage the balancing act between good transportability and a good sound quality of the loudspeaker apparatus. The bistable membrane can be changed from a stable operating state into a stable transport state. By way of a slight pressure at both ends of the bistable membrane, the latter can be rolled up and consequently changed into the transport state. By way of example, in the transport state, the bistable membrane can engage around a cylindrical housing that partly or wholly encloses the loudspeaker apparatus.
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公开(公告)号：US20200314557A1
公开(公告)日：2020-10-01
申请号：US16447353
申请日：2019-06-20
申请人： LG Display Co., Ltd.
发明人： Kyungyeol RYU , Chiwan KIM , YuSeon KHO , YongGyoon JANG
IPC分类号： H04R17/00 , H01L41/047 , H01L41/08 , H01L41/09 , H01L41/37 , H01L41/083 , H04R7/02 , B06B1/06
摘要： A display apparatus includes a display module having a display panel configured to display an image, a sound generation module disposed at the display module and configured to vibrate the display module to generate sound, a first cover configured to cover a first periphery portion of the display module, and a plurality of ultrasonic generation modules disposed between the first periphery portion of the display module and the first cover. The first cover includes a plurality of first holes overlapping with the plurality of ultrasonic generation modules.
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公开(公告)号：US10743108B2
公开(公告)日：2020-08-11
申请号：US16236332
申请日：2018-12-28
发明人： Bo Xiao , Ronglin Linghu
摘要： The present application discloses a miniature speaker, including: a frame; a vibration system positioned on the frame; a magnetic circuit system for driving the vibration system. The vibration system includes a first diaphragm fixed to the frame, a second diaphragm, and a voice coil for driving the first diaphragm to produce sounds. The second diaphragm includes a suspension, a first fastening portion fixed to the frame, a second fastening portion fixed to the voice coil at an end away from the first diaphragm. The suspension includes a main suspension and a pair of auxiliary suspensions extending from two edges of the main suspension along a length direction of the main suspension. A width of the main suspension is greater than a width of the auxiliary suspension. The rigidity of the second suspension is improved, and the lateral swing of the vibration system is suppressed.
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公开(公告)号：US20200213739A1
公开(公告)日：2020-07-02
申请号：US16705169
申请日：2019-12-05
发明人： Dijiang Tong
摘要： The present invention provides a sound device, which includes a housing and a sound unit with a diaphragm. The housing includes a cover plate and a bottom plate, the cover plate and the bottom plate are matched to form an accommodating cavity, and the sound unit is fixedly placed in the accommodating cavity. The bottom plate includes a main plate and a steel sheet embedded in the main plate, the main plate is provided with a first opening, the steel sheet is fixedly connected with the main plate and covers the first opening, and one side of the sound unit away from the diaphragm is welded and fixed with the steel sheet.
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