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Patent Agency Ranking
公开(公告)号：US10560784B2
公开(公告)日：2020-02-11
申请号：US16443088
申请日：2019-06-17
Inventor： Colin Robert Jenkins , Tsjerk Hans Hoekstra , Euan James Boyd
Abstract: A MEMS capacitive transducer with increased robustness and resilience to acoustic shock. The transducer structure includes a flexible membrane supported between a first volume and a second volume, and at least one variable vent structure in communication with at least one of the first and second volumes. The variable vent structure includes at least one moveable portion which is moveable in response to a pressure differential across the moveable portion so as to vary the size of a flow path through the vent structure. The variable vent may be formed through the membrane and the moveable portion may be a part of the membrane, defined by one or more channels, that is deflectable away from the surface of the membrane. The variable vent is preferably closed in the normal range of pressure differentials but opens at high pressure differentials to provide more rapid equalisation of the air volumes above and below the membrane.
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公开(公告)号：US10450189B2
公开(公告)日：2019-10-22
申请号：US15810592
申请日：2017-11-13
Inventor： Tom Hanley , Timothy John Brosnihan , Euan James Boyd
Abstract: The application describes a MEMS transducer comprising a substrate having a cavity. The transducer exhibits a membrane layer supported relative to the substrate to define a flexible membrane. An upper surface of the substrate comprises an overlap region between the edge of the cavity and a perimeter of the flexible membrane where the membrane overlies the upper surface of the substrate. At least one portion of the overlap region of the upper surface of the substrate is provided with a plurality of recesses. The recesses are defined so as to extend from the edge of the cavity towards the perimeter of the flexible membrane.
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公开(公告)号：US10375481B2
公开(公告)日：2019-08-06
申请号：US15665996
申请日：2017-08-01
Inventor： Colin Robert Jenkins , Tsjerk Hans Hoekstra , Euan James Boyd
Abstract: A MEMS capacitive transducer with increased robustness and resilience to acoustic shock. The transducer structure includes a flexible membrane supported between a first volume and a second volume, and at least one variable vent structure in communication with at least one of the first and second volumes. The variable vent structure includes at least one moveable portion which is moveable in response to a pressure differential across the moveable portion so as to vary the size of a flow path through the vent structure. The variable vent may be formed through the membrane and the moveable portion may be a part of the membrane, defined by one or more channels, that is deflectable away from the surface of the membrane. The variable vent is preferably closed in the normal range of pressure differentials but opens at high pressure differentials to provide more rapid equalisation of the air volumes above and below the membrane.
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公开(公告)号：US20170201835A1
公开(公告)日：2017-07-13
申请号：US15470107
申请日：2017-03-27
Inventor： Colin R. Jenkins , Tsjerk Hans Hoekstra , Euan James Boyd
CPC classification number: H04R19/005 , B81B3/0021 , B81B3/0075 , B81B2201/0257 , B81B2201/0264 , B81B2203/0127 , B81C1/00158 , H01L41/09 , H01L41/0926 , H01L2224/16225 , H01L2224/48091 , H01L2924/1461 , H01L2924/16151 , H01L2924/16152 , H04R1/222 , H04R23/006 , H04R2201/003 , Y10T29/49005 , H01L2924/00014
Abstract: A MEMS capacitive transducer with increased robustness and resilience to acoustic shock. The transducer structure includes a flexible membrane supported between a first volume and a second volume, and at least one variable vent structure in communication with at least one of the first and second volumes. The variable vent structure includes at least one moveable portion which is moveable in response to a pressure differential across the moveable portion so as to vary the size of a flow path through the vent structure. The variable vent may be formed through the membrane and the moveable portion may be a part of the membrane, defined by one or more channels, that is deflectable away from the surface of the membrane. The variable vent is preferably closed in the normal range of pressure differentials but opens at high pressure differentials to provide more rapid equalisation of the air volumes above and below the membrane.
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公开(公告)号：US20160083246A1
公开(公告)日：2016-03-24
申请号：US14959737
申请日：2015-12-04
Inventor： Colin Robert Jenkins , Tsjerk Hans Hoekstra , Euan James Boyd
IPC: B81B3/00
CPC classification number: H04R19/005 , B81B3/0021 , B81B3/0075 , B81B2201/0257 , B81B2201/0264 , B81B2203/0127 , B81C1/00158 , H01L41/09 , H01L41/0926 , H01L2224/16225 , H01L2224/48091 , H01L2924/1461 , H01L2924/16151 , H01L2924/16152 , H04R1/222 , H04R23/006 , H04R2201/003 , Y10T29/49005 , H01L2924/00014
Abstract: A MEMS capacitive transducer with increased robustness and resilience to acoustic shock. The transducer structure includes a flexible membrane supported between a first volume and a second volume, and at least one variable vent structure in communication with at least one of the first and second volumes. The variable vent structure includes at least one moveable portion which is moveable in response to a pressure differential across the moveable portion so as to vary the size of a flow path through the vent structure. The variable vent may be formed through the membrane and the moveable portion may be a part of the membrane, defined by one or more channels, that is deflectable away from the surface of the membrane. The variable vent is preferably closed in the normal range of pressure differentials but opens at high pressure differentials to provide more rapid equalisation of the air volumes above and below the membrane.
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