Inertial sensor with off-axis spring system
    1.
    发明授权
    Inertial sensor with off-axis spring system 有权
    惯性传感器带离轴弹簧系统

    公开(公告)号:US08739627B2

    公开(公告)日:2014-06-03

    申请号:US13282192

    申请日:2011-10-26

    IPC分类号: G01C19/56

    CPC分类号: G01C19/5747 G01C19/5762

    摘要: An inertial sensor (20) includes a drive mass (30) configured to undergo oscillatory motion and a sense mass (32) linked to the drive mass (30). On-axis torsion springs (58) are coupled to the sense mass (32), the on-axis torsion springs (58) being co-located with an axis of rotation (22). The inertial sensor (20) further includes an off-axis spring system (60). The off-axis spring system (60) includes off-axis springs (68, 70, 72, 74), each having a connection interface (76) coupled to the sense mass (32) at a location on the sense mass (32) that is displaced away from the axis of rotation (22). Together, the on-axis torsion springs (58) and the off-axis spring system (60) enable the sense mass (32) to oscillate out of plane about the axis of rotation (22) at a sense frequency that substantially matches a drive frequency of the drive mass (30).

    摘要翻译: 惯性传感器(20)包括构造成经历振荡运动的驱动质量块(30)和与驱动质量块(30)连接的感测质量块(32)。 轴上扭转弹簧(58)联接到感测质量块(32),所述轴上扭转弹簧(58)与旋转轴线(22)共同定位。 惯性传感器(20)还包括离轴弹簧系统(60)。 离轴弹簧系统(60)包括离轴弹簧(68,70,72,74),每个离轴弹簧具有在感测质量块(32)上的位置处耦合到感测质量块(32)的连接界面(76) 其远离旋转轴线(22)移位。 一起,轴上扭转弹簧(58)和离轴弹簧系统(60)使得感测质量(32)能够以基本匹配驱动器的感测频率围绕旋转轴线(22)摆动离开平面 驱动质量(30)的频率。

    MEMS SENSOR WITH STRESS ISOLATION AND METHOD OF FABRICATION
    2.
    发明申请
    MEMS SENSOR WITH STRESS ISOLATION AND METHOD OF FABRICATION 有权
    具有应力隔离的MEMS传感器和制造方法

    公开(公告)号:US20130319117A1

    公开(公告)日:2013-12-05

    申请号:US13482332

    申请日:2012-05-29

    IPC分类号: G01P15/125 H01R43/00

    摘要: A MEMS sensor (20, 86) includes a support structure (26) suspended above a surface (28) of a substrate (24) and connected to the substrate (24) via spring elements (30, 32, 34). A proof mass (36) is suspended above the substrate (24) and is connected to the support structure (26) via torsional elements (38). Electrodes (42, 44), spaced apart from the proof mass (36), are connected to the support structure (26) and are suspended above the substrate (24). Suspension of the electrodes (42, 44) and proof mass (36) above the surface (28) of the substrate (24) via the support structure (26) substantially physically isolates the elements from deformation of the underlying substrate (24). Additionally, connection via the spring elements (30, 32, 34) result in the MEMS sensor (22, 86) being less susceptible to movement of the support structure (26) due to this deformation.

    摘要翻译: MEMS传感器(20,86)包括悬挂在基板(24)的表面(28)上方并通过弹簧元件(30,32,34)连接到基板(24)的支撑结构(26)。 证明物质(36)悬挂在基底(24)上方,并通过扭转元件(38)连接到支撑结构(26)。 与证明物质(36)间隔开的电极(42,44)连接到支撑结构(26)并悬挂在基底(24)上方。 通过支撑结构(26)将基片(24)的表面(28)上方的电极(42,44)和检验质量块(36)悬挂在基本上物理上隔离下面的基底(24)的变形。 此外,通过弹簧元件(30,32,34)的连接导致MEMS传感器(22,86)由于这种变形而不易受支撑结构(26)的移动的影响。

    Differential capacitive sensor and method of making same
    3.
    发明授权
    Differential capacitive sensor and method of making same 失效
    差分电容式传感器及其制作方法

    公开(公告)号:US07610809B2

    公开(公告)日:2009-11-03

    申请号:US11655557

    申请日:2007-01-18

    IPC分类号: G01P15/125

    CPC分类号: G01P15/125 G01P2015/0831

    摘要: A differential capacitive sensor (50) includes a movable element (56) pivotable about a rotational axis (60). The movable element (56) includes first and second sections (94, 96). The first section (94) has an extended portion (98) distal from the rotational axis (60). A static layer (52) is spaced away from a first surface (104) of the moveable element (56), and includes a first actuation electrode (74), a first sensing electrode (64), and a third sensing electrode (66). A static layer (62) is spaced away from a second surface (106) of the moveable element (56) and includes a second actuation electrode (74), a second sensing electrode (70), and a fourth sensing electrode (72). The first and second electrodes (64, 70) oppose the first section (94), the third and fourth electrodes (66, 72) oppose the second section (96), and the first and second electrodes (68, 74) oppose the extended portion (98).

    摘要翻译: 差分电容传感器(50)包括可围绕旋转轴线(60)枢转的可移动元件(56)。 可移动元件(56)包括第一和第二部分(94,96)。 第一部分(94)具有远离旋转轴线(60)的延伸部分(98)。 静电层(52)与可移动元件(56)的第一表面(104)间隔开,并且包括第一致动电极(74),第一感测电极(64)和第三感测电极(66) 。 静电层(62)与可移动元件(56)的第二表面(106)间隔开并且包括第二致动电极(74),第二感测电极(70)和第四感测电极(72)。 第一和第二电极(64,70)与第一部分(94)相对,第三和第四电极(66,72)与第二部分(96)相对,并且第一和第二电极(68,74)与延伸的 部分(98)。

    Pressure sensor with differential capacitive output
    4.
    发明授权
    Pressure sensor with differential capacitive output 有权
    压差传感器具有差分电容输出

    公开(公告)号:US09290067B2

    公开(公告)日:2016-03-22

    申请号:US13598763

    申请日:2012-08-30

    IPC分类号: G01L9/12 B60C23/04

    摘要: A MEMS pressure sensor device is provided that can provide both a linear output with regard to external pressure, and a differential capacitance output so as to improve the signal amplitude level. These benefits are provided through use of a rotating proof mass that generates capacitive output from electrodes configured at both ends of the rotating proof mass. Sensor output can then be generated using a difference between the capacitances generated from the ends of the rotating proof mass. An additional benefit of such a configuration is that the differential capacitance output changes in a more linear fashion with respect to external pressure changes than does a capacitive output from traditional MEMS pressure sensors.

    摘要翻译: 提供了可以提供关于外部压力的线性输出和差分电容输出以提高信号幅度电平的MEMS压力传感器装置。 这些优点通过使用旋转检测质量块来提供,该质量体在旋转检验质量体两端配置电极产生电容性输出。 然后可以使用从旋转检测质量块的端部产生的电容之间的差异来生成传感器输出。 这种配置的另外的好处是差分电容输出相对于来自传统MEMS压力传感器的电容输出相对于外部压力变化更线性地变化。

    MEMS device having variable gap width and method of manufacture
    5.
    发明授权
    MEMS device having variable gap width and method of manufacture 有权
    具有可变间隙宽度的MEMS器件和制造方法

    公开(公告)号:US08927311B2

    公开(公告)日:2015-01-06

    申请号:US13028930

    申请日:2011-02-16

    IPC分类号: B81B3/00 G01P15/08 G01P15/125

    摘要: A MEMS device (40) includes a base structure (42) and a microstructure (44) suspended above the structure (42). The base structure (42) includes an oxide layer (50) formed on a substrate (48), a structural layer (54) formed on the oxide layer (50), and an insulating layer (56) formed over the structural layer (54). A sacrificial layer (112) is formed overlying the base structure (42), and the microstructure (44) is formed in another structural layer (116) over the sacrificial layer (112). Methodology (90) entails removing the sacrificial layer (112) and a portion of the oxide layer (50) to release the microstructure (44) and to expose a top surface (52) of the substrate (48). Following removal, a width (86) of a gap (80) produced between the microstructure (44) and the top surface (52) is greater than a width (88) of a gap (84) produced between the microstructure (44) and the structural layer (54).

    摘要翻译: MEMS器件(40)包括基部结构(42)和悬挂在结构(42)上方的微结构(44)。 基底结构(42)包括形成在基底(48)上的氧化物层(50),形成在氧化物层(50)上的结构层(54)和形成在结构层(54)上的绝缘层 )。 牺牲层(112)形成在基部结构(42)上方,并且微结构(44)形成在牺牲层(112)上方的另一个结构层(116)中。 方法(90)需要去除牺牲层(112)和氧化物层(50)的一部分以释放微结构(44)并暴露衬底(48)的顶表面(52)。 在移除之后,在微结构(44)和顶表面(52)之间产生的间隙(80)的宽度(86)大于在微结构(44)和微结构(44)之间产生的间隙(84)的宽度(88) 结构层(54)。

    Resonant accelerometer with low sensitivity to package stress
    6.
    发明授权
    Resonant accelerometer with low sensitivity to package stress 有权
    谐振加速度计,对包装应力敏感度低

    公开(公告)号:US08468887B2

    公开(公告)日:2013-06-25

    申请号:US12102645

    申请日:2008-04-14

    IPC分类号: G01P15/00

    摘要: A resonant accelerometer (24) includes a single anchor (28) fixed to a substrate (32). A proof mass (34) is positioned above a surface (30) of the substrate (32) and is positioned symmetrically about the anchor (28). The proof mass (34) has a central opening (38). Each of a number of suspension beams (42, 44, 46, 48) resides in the central opening (38) and has one end (50) affixed to the anchor (28) and another end (52) attached to an inner peripheral wall (40) of the proof mass (34). A resonant frequency of the beams (42, 44) in a direction (64) aligned with a common axis (58) of the beams (42, 44) changes according to acceleration in the direction (64). A resonant frequency of the beams (46, 48) in a direction (66) aligned with a common axis (62) of the beams (46, 48) changes according to acceleration in the direction (66).

    摘要翻译: 谐振加速度计(24)包括固定到基板(32)上的单个锚(28)。 校准质量块(34)位于衬底(32)的表面(30)上方,并且围绕锚(28)对称地定位。 检测质量块(34)具有中心孔(38)。 多个悬挂梁(42,44,46,48)中的每一个都位于中央开口(38)中,并且具有固定到锚固件(28)的一个端部(50),并且另一个端部(52)附接到内周壁 (34)的(40)。 在与梁(42,44)的公共轴(58)对准的方向(64)上的梁(42,44)的共振频率根据方向(64)的加速度而变化。 在与梁(46,48)的共同轴线(62)对准的方向(66)上的梁(46,48)的共振频率根据方向(66)的加速度而变化。

    Laterally integrated MEMS sensor device with multi-stimulus sensing
    7.
    发明授权
    Laterally integrated MEMS sensor device with multi-stimulus sensing 有权
    具有多重刺激感知功能的集成MEMS传感器装置

    公开(公告)号:US08387464B2

    公开(公告)日:2013-03-05

    申请号:US12627679

    申请日:2009-11-30

    IPC分类号: G01L9/12

    摘要: A microelectromechanical systems (MEMS) sensor device (20) includes a substrate (22) having sensors (24, 26) disposed on the same side (28) of the substrate (22) and laterally spaced apart from one another. The sensor (26) includes a sense element (56), and the substrate (22) includes a cavity (58) extending through the substrate (22) from the backside (30) of the substrate (22) to expose the sense element (56) to an external environment (54). The sense element (56) is movable in response to a stimulus (52) from the environment (54) due to its exposure to the environment (54) via the cavity (58). Fabrication methodology (66) entails concurrently forming the sensors (24, 26) on substrate (22) by implementing MEMS process flow, followed by creating the cavity (58) through the substrate (22) to expose the sense element (56) to the environment (54).

    摘要翻译: 微机电系统(MEMS)传感器装置(20)包括具有设置在基板(22)的同一侧(28)上并且彼此横向间隔开的传感器(24,26)的基板(22)。 传感器(26)包括感测元件(56),并且衬底(22)包括从衬底(22)的背面(30)延伸穿过衬底(22)的空腔(58),以暴露感测元件 56)到外部环境(54)。 响应于来自环境(54)的刺激(52),感测元件(56)由于经由空腔(58)暴露于环境(54)而是可移动的。 制造方法(66)需要通过实施MEMS工艺流程同时在衬底(22)上形成传感器(24,26),随后通过衬底(22)产生空腔(58),以将感测元件(56)暴露于 环境(54)。

    ACCELEROMETER WITH OVER-TRAVEL STOP STRUCTURE
    8.
    发明申请
    ACCELEROMETER WITH OVER-TRAVEL STOP STRUCTURE 有权
    具有超行程停止结构的加速度计

    公开(公告)号:US20100223997A1

    公开(公告)日:2010-09-09

    申请号:US12400441

    申请日:2009-03-09

    IPC分类号: G01P15/125

    CPC分类号: G01P15/125 G01P2015/0814

    摘要: An accelerometer (50, 100, 120, 130) includes a substrate (58) and a proof mass (54) spaced apart from a surface (56) of the substrate (58). Compliant members (62) are coupled to the proof mass (54) and enable the proof mass (54) to move parallel to the surface (56) of the substrate (58) in a sense direction (68). Proof mass anchors (60) interconnect the compliant members (62) with the surface (56). The accelerometer (50, 100, 120, 130) includes an over-travel stop structure (52, 102, 122, 132) having stop anchors (70, 72) coupled to the substrate (58). The stop anchors (70, 72) are coupled to the substrate (58) at positions (76) on the surface (56) residing at least partially within an anchor attach area (71) bounded in the sense direction (68) by locations (78) of the proof mass anchors (60) on the surface (56).

    摘要翻译: 加速度计(50,100,120,130)包括与衬底(58)的表面(56)间隔开的衬底(58)和校准质量块(54)。 合格构件(62)被耦合到检验质量块(54),并且使检测质量块(54)能够在感测方向(68)上平行于衬底(58)的表面(56)移动。 证明质量锚(60)将顺应构件(62)与表面(56)相互连接。 加速度计(50,100,120,130)包括具有联接到基底(58)的止动锚(70,72)的过度行进止动结构(52,102,122,132)。 停止锚固件(70,72)在表面(56)上的位置(76)处联接到基底(58),所述位置(76)至少部分地位于沿着感测方向(68)限定的锚定附着区域(71)中的位置( 表面(56)上的检验质量锚(60)的表面(78)。

    Differential capacitive sensor and method of making same
    9.
    发明申请
    Differential capacitive sensor and method of making same 失效
    差分电容式传感器及其制作方法

    公开(公告)号:US20080173091A1

    公开(公告)日:2008-07-24

    申请号:US11655557

    申请日:2007-01-18

    IPC分类号: G01P15/125

    CPC分类号: G01P15/125 G01P2015/0831

    摘要: A differential capacitive sensor (50) includes a movable element (56) pivotable about a rotational axis (60). The movable element (56) includes first and second sections (94, 96). The first section (94) has an extended portion (98) distal from the rotational axis (60). A static layer (52) is spaced away from a first surface (104) of the moveable element (56), and includes a first actuation electrode (74), a first sensing electrode (64), and a third sensing electrode (66). A static layer (62) is spaced away from a second surface (106) of the moveable element (56) and includes a second actuation electrode (74), a second sensing electrode (70), and a fourth sensing electrode (72). The first and second electrodes (64, 70) oppose the first section (94), the third and fourth electrodes (66, 72) oppose the second section (96), and the first and second electrodes (68, 74) oppose the extended portion (98).

    摘要翻译: 差分电容传感器(50)包括可围绕旋转轴线(60)枢转的可移动元件(56)。 可移动元件(56)包括第一和第二部分(94,96)。 第一部分(94)具有远离旋转轴线(60)的延伸部分(98)。 静电层(52)与可移动元件(56)的第一表面(104)间隔开,并且包括第一致动电极(74),第一感测电极(64)和第三感测电极(66) 。 静电层(62)与可移动元件(56)的第二表面(106)间隔开并且包括第二致动电极(74),第二感测电极(70)和第四感测电极(72)。 第一和第二电极(64,70)与第一部分(94)相对,第三和第四电极(66,72)与第二部分(96)相对,并且第一和第二电极(68,74)与延伸的 部分(98)。

    PRESSURE SENSOR WITH DIFFERENTIAL CAPACITIVE OUTPUT
    10.
    发明申请
    PRESSURE SENSOR WITH DIFFERENTIAL CAPACITIVE OUTPUT 有权
    具有差分电容输出的压力传感器

    公开(公告)号:US20140060169A1

    公开(公告)日:2014-03-06

    申请号:US13598763

    申请日:2012-08-30

    IPC分类号: G01L9/12 B60C23/02

    摘要: A MEMS pressure sensor device is provided that can provide both a linear output with regard to external pressure, and a differential capacitance output so as to improve the signal amplitude level. These benefits are provided through use of a rotating proof mass that generates capacitive output from electrodes configured at both ends of the rotating proof mass. Sensor output can then be generated using a difference between the capacitances generated from the ends of the rotating proof mass. An additional benefit of such a configuration is that the differential capacitance output changes in a more linear fashion with respect to external pressure changes than does a capacitive output from traditional MEMS pressure sensors.

    摘要翻译: 提供了可以提供关于外部压力的线性输出和差分电容输出以提高信号幅度电平的MEMS压力传感器装置。 这些优点通过使用旋转检测质量块来提供,该质量体在旋转检验质量体两端配置电极产生电容性输出。 然后可以使用从旋转检测质量块的端部产生的电容之间的差异来生成传感器输出。 这种配置的另外的好处是差分电容输出相对于来自传统MEMS压力传感器的电容输出相对于外部压力变化更线性地变化。