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1.发明申请公开(公告)号：US20230012105A1
公开(公告)日：2023-01-12
申请号：US17948371
申请日：2022-09-20
发明人： Sergei Shulepov , Peter Dirksen , Hans-Peter Loebl , Franciscus Paulus Maria Budzelaar , Petrus Henricus Maria Timmermans , Nico Maris Adriaan de Wild
摘要： Disclosed are systems and methods of operation for capacitive radio frequency micro-electromechanical switches, such as CMUT cells for use in an ultrasound system. An RFMEMS may include substrate, a first electrode connected to the substrate, a membrane and a second electrode connected to the membrane.
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2.发明授权公开(公告)号：US11864947B2
公开(公告)日：2024-01-09
申请号：US16471997
申请日：2017-12-21
发明人： Hans-Peter Loebl , Sergei Shulepov
CPC分类号： A61B8/4494 , A61B8/5207 , G01N29/0654 , G01N29/2406 , G01N29/348 , H01H1/0036 , H01H59/0009 , H01H2059/0018
摘要： Disclosed are systems and methods of operation for capacitive radio frequency micro-electromechanical switches, such as CMUT cells for use in an ultrasound system. An RFMEMS may include substrate, a first electrode connected to the substrate, a membrane and a second electrode connected to the membrane. In some examples, there is a dielectric stack between the first electrode and the second electrode and flexible membrane. The dielectric stack design minimizes drift in the membrane collapse voltage. In other examples, one of the electrodes is in the form of a ring, and a third electrode is provided to occupy the space in the center of the ring. Alternatively, the first and second electrodes are both in the form of a ring and there is a support between the electrodes inside the rings.
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公开(公告)号：US11084062B2
公开(公告)日：2021-08-10
申请号：US15770605
申请日：2016-11-02
IPC分类号： B06B1/02
摘要： An ultrasound transducer array is provided that comprises a plurality of CMUT (capacitive micromachined ultrasound transducer) cells (100), each CMUT cell comprising a substrate (300) carrying a first electrode (110) of a first electrode arrangement, the substrate being spatially separated from a flexible membrane including a second electrode (120) of a second electrode arrangement by a gap (130), at least one of the first electrode and the second electrode being electrically insulated from said gap by at least one dielectric layer (311, 313), wherein at least one of the first electrode arrangement and the second electrode arrangement is partitioned into a plurality of sections interconnected by respective fuse portions (112, 122). An ultrasound probe and an ultrasound system comprising such an ultrasound transducer array are also disclosed.
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公开(公告)号：US09515288B2
公开(公告)日：2016-12-06
申请号：US14408997
申请日：2013-06-11
CPC分类号： H01L51/5253 , H01B1/04 , H01L51/50 , H01L51/5044 , H01L51/5056 , H01L51/5072 , H01L51/5278 , H01L51/56 , H05B33/28
摘要： The invention relates to the field of organic electronic devices (1) with diffusion barriers and to a method to manufacture such organic electronic devices (1) to provide an organic electronic device (1) with excellent performance, which is as stable as possible over time. The organic electronic device (1) with a substrate (2), a first electrode (3) arranged on top of the substrate (2) and a functional layer stack (FLS) arranged on top of the first electrode (3) comprising one or more organic layers (41, 42, 43) and a second electrode (5), wherein the organic electronic device (1) further comprises at least one essentially transparent and electrically conductive graphene layer (6) arranged in contact to at least one of the organic layers (41, 42, 43) acting as a diffusion barrier against diffusion of atoms, ions or molecules into this organic layer (41, 42, 43).
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公开(公告)号：US11857361B2
公开(公告)日：2024-01-02
申请号：US17256248
申请日：2019-06-28
发明人： Franciscus Johannes Gerardus Hakkens , Lucas Johannes Anna Maria Beckers , Johannes Wilhelmus Weekamp , Peter Dirksen , Petrus Henricus Maria Timmermans , Sergei Y. Shulepov , Hans-Peter Loebl
CPC分类号： A61B8/12 , A61B8/445 , A61B8/4477 , A61B8/4494 , G01S7/52085 , G01S15/8906
摘要： An intraluminal ultrasound imaging device includes a flexible elongate member configured to be positioned within a body lumen of a patient. An ultrasound imaging assembly is disposed at the distal portion of the flexible elongate member. The ultrasound imaging assembly includes a plurality of acoustic elements and an acoustically-transparent window disposed over the plurality of acoustic elements. The acoustically-transparent window comprising a plurality of layers formed on top of one another. The plurality of layers includes an innermost layer directly contacting the plurality of acoustic elements, an outermost layer opposite the innermost layer, and an adhesive layer. The outermost layer includes a tubing. A hardness of the innermost layer is less than hardnesses of every other layer of the plurality of layers. A hardness of the outermost layer is greater than the hardnesses of every other layer of the plurality of layers.
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6.发明授权公开(公告)号：US11458504B2
公开(公告)日：2022-10-04
申请号：US16472472
申请日：2017-12-21
发明人： Sergei Shulepov , Peter Dirksen , Hans-Peter Loebl , Franciscus Paulus Maria Budzelaar , Petrus Henricus Maria Timmermans , Nico Maris Adriaan de Wild
摘要： Disclosed are systems and methods of operation for capacitive radio frequency micro-electromechanical switches, such as CMUT cells for use in an ultrasound system. An RFMEMS may include substrate, a first electrode connected to the substrate, a membrane and a second electrode connected to the membrane. In some examples, there is a dielectric stack between the first and second electrodes. The dielectric stack design minimizes drift in the membrane collapse voltage. In other examples, a voltage supply coupled to an ultrasonic array compressing the CMUT cells is adapted to provide a sequence of voltage profiles to the electrodes of the CMUT cell, wherein each profile includes a bias voltage and a stimulus voltage, and wherein a polarity of each subsequent voltage profile in the sequence is opposite to the polarity of the preceding profile. In another example, there is a capacitance sensing circuit provided, which is arranged to determine a drift voltage of the CMUT cell.
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7.发明申请公开(公告)号：US20210129187A1
公开(公告)日：2021-05-06
申请号：US16472472
申请日：2017-12-21
发明人： Sergei Shulepov , Peter Dirksen , Hans-Peter Loebl , Franciscus Paulus Maria Budzelaar , Petrus Henricus Maria Timmermans , Nico Maris Adriaan de Wild
摘要： Disclosed are systems and methods of operation for capacitive radio frequency micro-electromechanical switches, such as CMUT cells for use in an ultrasound system. An RFMEMS may include substrate, a first electrode connected to the substrate, a membrane and a second electrode connected to the membrane. In some examples, there is a dielectric stack between the first and second electrodes. The dielectric stack design minimizes drift in the membrane collapse voltage. In other examples, a voltage supply coupled to an ultrasonic array compressing the CMUT cells is adapted to provide a sequence of voltage profiles to the electrodes of the CMUT cell, wherein each profile includes a bias voltage and a stimulus voltage, and wherein a polarity of each subsequent voltage profile in the sequence is opposite to the polarity of the preceding profile. In another example, there is a capacitance sensing circuit provided, which is arranged to determine a drift voltage of the CMUT cell.
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8.发明申请公开(公告)号：US20200015784A1
公开(公告)日：2020-01-16
申请号：US16471997
申请日：2017-12-21
发明人： Hans-Peter Loebl , Sergei Shulepov
摘要： Disclosed are systems and methods of operation for capacitive radio frequency micro-electromechanical switches, such as CMUT cells for use in an ultrasound system. An RFMEMS may include substrate, a first electrode connected to the substrate, a membrane and a second electrode connected to the membrane. In some examples, there is a dielectric stack between the first electrode and the second electrode and flexible membrane. The dielectric stack design minimizes drift in the membrane collapse voltage. In other examples, one of the electrodes is in the form of a ring, and a third electrode is provided to occupy the space in the center of the ring. Alternatively, the first and second electrodes are both in the form of a ring and there is a support between the electrodes inside the rings.
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