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31.
公开(公告)号:US09593008B2
公开(公告)日:2017-03-14
申请号:US14501792
申请日:2014-09-30
申请人: InvenSense, Inc.
CPC分类号: B81B3/0051 , B81B7/02 , B81B2203/0118 , H02N11/002
摘要: A MEMS sensor is disclosed. The MEMS sensor includes a MEMS structure and a substrate coupled to the MEMS structure. The substrate includes a layer of metal and a layer of dielectric material. The MEMS structure moves in response to an excitation. A first over-travel stop is formed on the substrate at a first distance from the MEMS structure. A second over-travel stop on the substrate at a second distance from the MEMS structure. At least one electrode on the substrate at a third distance from the MEMS structure. The first, second and third distances are all different.
摘要翻译: 公开了一种MEMS传感器。 MEMS传感器包括耦合到MEMS结构的MEMS结构和衬底。 衬底包括金属层和电介质材料层。 MEMS结构响应于激发而移动。 在距离MEMS结构的第一距离处,在基板上形成第一超行程挡块。 在距离MEMS结构第二距离的基板上的第二超行程停止。 在距离MEMS结构三分之一距离的衬底上的至少一个电极。 第一,第二和第三距离都是不同的。
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公开(公告)号:US20140184213A1
公开(公告)日:2014-07-03
申请号:US13731301
申请日:2012-12-31
申请人: INVENSENSE, INC.
IPC分类号: G01R33/028
CPC分类号: G01R33/0286 , G03F1/00 , H01H1/00 , H02K1/00
摘要: A magnetic field sensor includes a driving element through which an electric current circumnavigates the driving element. A Lorentz force acts on the driving element resulting in a torque about a first axis in response to a magnetic field along a second axis substantially parallel to a plane of a substrate. The driving element is coiled-shaped. A sensing element of the magnetic field sensor is configured to rotate about the first axis substantially parallel to the plane of the substrate in response to the magnetic field and a coupling element mechanically couples the driving element to the sensing element. The driving element, the sensing element, and the coupling element are disposed in the plane, substantially parallel to the substrate. At least two anchors are configured to connect the driving element, the sensing element, and the coupling element to the substrate.
摘要翻译: 磁场传感器包括驱动元件,电流通过该驱动元件环绕驱动元件。 洛伦兹力作用在驱动元件上,导致响应于基本上平行于基底平面的第二轴的磁场而产生围绕第一轴线的转矩。 驱动元件是螺旋形的。 磁场传感器的感测元件被配置成响应于磁场围绕基板平行于基板的平面旋转,并且耦合元件将驱动元件机械耦合到感测元件。 驱动元件,感测元件和耦合元件设置在基本上平行于基板的平面内。 至少两个锚被构造成将驱动元件,感测元件和耦合元件连接到基板。
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公开(公告)号:US20240351864A1
公开(公告)日:2024-10-24
申请号:US18136556
申请日:2023-04-19
申请人: InvenSense, Inc.
发明人: Roberto Martini , Matthew Julian Thompson , Giacomo Gafforelli , Luca Coronato , Luigi Esposito
CPC分类号: B81C1/00349 , B81B3/0018 , B81B2201/0235 , B81B2203/0109 , B81B2203/03 , B81B2203/04 , B81C2201/0109 , B81C2201/0132 , B81C2201/0147
摘要: An actuator layer of a MEMS sensor is be fabricated to include multi-level features, such as additional sense electrodes, vertical bump stops, or weighted proof masses. A sacrificial layer is deposited on the actuator layer such that locations are provided for the multi-level features to extend vertically from the actuator layer. After the multi-layer features are fabricated on the actuator layer the sacrificial layer is removed. Additional processing such as patterning of the actuator layer may be performed to provide desired functionality and electrical signals to portions of the actuator layer, including to the multi-level features.
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公开(公告)号:US11846648B2
公开(公告)日:2023-12-19
申请号:US17647376
申请日:2022-01-07
申请人: INVENSENSE, INC.
IPC分类号: G01P15/08
CPC分类号: G01P15/08 , G01P2015/0871
摘要: A microelectromechanical system device is described. The microelectromechanical system device can comprise: a proof mass coupled to an anchor via a spring, wherein the proof mass moves in response to an imposition of an external load to the proof mass, and an overtravel stop comprising a first portion and a second portion.
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公开(公告)号:US11761977B1
公开(公告)日:2023-09-19
申请号:US17733495
申请日:2022-04-29
申请人: InvenSense, Inc.
发明人: Varun Subramaniam Kumar , Mrigank Sharma , Giacomo Laghi , Luca Coronato , Matthew Julian Thompson
IPC分类号: G01P15/125 , G01P15/08
CPC分类号: G01P15/125 , G01P2015/0862
摘要: A MEMS sensor includes a central anchoring region that maintains the relative position of an attached proof mass relative to sense electrodes in the presence of undesired forces and stresses. The central anchoring region includes one or more first anchors that rigidly couple to a cover substrate and a base substrate. One or more second anchors are rigidly coupled to only the cover substrate and are connected to the one or more first anchors within the MEMS layer via an isolation spring. The proof mass in turn is connected to the one or more second anchors via one or more compliant springs.
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公开(公告)号:US11738994B2
公开(公告)日:2023-08-29
申请号:US18080169
申请日:2022-12-13
申请人: InvenSense, Inc.
发明人: David deKoninck , Varun Subramaniam Kumar , Matthew Julian Thompson , Vadim Tsinker , Logeeswaran Veerayah Jayaraman , Sarah Nitzan , Houri Johari-Galle , Jongwoo Shin , Le Jin
CPC分类号: B81B7/0019 , B81B7/0087 , G01K1/20 , G01L9/0072 , G01L19/04 , B81B2201/0242
摘要: An exemplary microelectromechanical device includes a MEMS layer, portions of which respond to an external force in order to measure the external force. A substrate layer is located below the MEMS layer and an anchor couples the substrate layer and MEMS layer to each other. A plurality of temperature sensors are located within the substrate layer to identify a temperature gradient being experienced by the MEMS device. Compensation is performed or operations of the MEMS device are modified based on temperature gradient.
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公开(公告)号:US11073531B2
公开(公告)日:2021-07-27
申请号:US16547268
申请日:2019-08-21
申请人: INVENSENSE, INC.
发明人: David deKoninck , Varun Subramaniam Kumar , Matthew Julian Thompson , Vadim Tsinker , Logeeswaran Veerayah Jayaraman , Sarah Nitzan , Houri Johari-Galle , Jongwoo Shin , Le Jin
IPC分类号: G01P1/00 , G01P15/125
摘要: A microelectromechanical (MEMS) accelerometer has a proof mass and a fixed electrode. The fixed electrode is located relative to the proof mass such that a capacitance formed by the fixed electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The MEMS accelerometer is exposed to heat sources that produce a z-axis thermal gradient in MEMS accelerometer and an in-plane thermal gradient in the X-Y plane of the MEMS accelerometer. The z-axis thermal gradient is sensed with a plurality of thermistors located relative to anchoring regions of a CMOS layer of the MEMS accelerometer. The configuration of the thermistors within the CMOS layer measures the z-axis thermal gradient while rejecting other lateral thermal gradients. Compensation is performed at the accelerometer based on the z-axis thermal gradient.
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公开(公告)号:US20210055321A1
公开(公告)日:2021-02-25
申请号:US16547268
申请日:2019-08-21
申请人: INVENSENSE, INC.
发明人: David deKoninck , Varun Subramaniam Kumar , Matthew Julian Thompson , Vadim Tsinker , Logeeswaran Veerayah Jayaraman , Sarah Nitzan , Houri Johari-Galle , Jongwoo Shin , Le Jin
IPC分类号: G01P1/00 , G01P15/125
摘要: A microelectromechanical (MEMS) accelerometer has a proof mass and a fixed electrode. The fixed electrode is located relative to the proof mass such that a capacitance formed by the fixed electrode and the proof mass changes in response to a linear acceleration along a sense axis of the accelerometer. The MEMS accelerometer is exposed to heat sources that produce a z-axis thermal gradient in MEMS accelerometer and an in-plane thermal gradient in the X-Y plane of the MEMS accelerometer. The z-axis thermal gradient is sensed with a plurality of thermistors located relative to anchoring regions of a CMOS layer of the MEMS accelerometer. The configuration of the thermistors within the CMOS layer measures the z-axis thermal gradient while rejecting other lateral thermal gradients. Compensation is performed at the accelerometer based on the z-axis thermal gradient.
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公开(公告)号:US10371715B2
公开(公告)日:2019-08-06
申请号:US14642529
申请日:2015-03-09
申请人: InvenSense, Inc.
IPC分类号: G01P15/00 , G01P15/125 , G01P15/08
摘要: A sensor is disclosed. The sensor includes a substrate and a mechanical structure. The mechanical structure includes at least two proof masses including a first proof mass and a second proof mass. The mechanical structure also includes a flexible coupling between the at least two proof masses and the substrate. The at least two proof masses move in an anti-phase direction normal to the plane of the substrate in response to acceleration of the sensor normal to the plane and move in anti-phase in a direction parallel to the plane of the substrate in response to an acceleration of the sensor parallel to the plane. The at least two proof masses move in a direction parallel to the plane of the substrate in response to an acceleration of the sensor parallel to the plane.
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公开(公告)号:US20190187172A1
公开(公告)日:2019-06-20
申请号:US16206882
申请日:2018-11-30
申请人: INVENSENSE, INC.
IPC分类号: G01P21/00 , G01P15/125
CPC分类号: G01P21/00 , G01P15/125
摘要: Facilitating self-calibration of a sensor device via modification of a sensitivity of the sensor device is presented herein. A sensor system can comprise a sensor component comprising a sensor that generates an output signal based on an external excitation of the sensor; a sensitivity modification component that modifies a sensitivity of the sensor by a defined amount; and a calibration component that measures a first output value of the output signal before a modification of the sensitivity by the defined amount, measures a second output value of the output signal after the modification of the sensitivity by the defined amount, and determines, based on a difference between the first output value and the second output value, an offset portion of the output signal. Further, the calibration component can modify, based on the offset portion, the output signal.
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