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11.发明申请公开(公告)号：US20170155879A1
公开(公告)日：2017-06-01
申请号：US15162367
申请日：2016-05-23
Applicant: STMicroelectronics S.r.l.
Inventor： Domenico Giusti , Roberto Carminati
CPC classification number: H04N9/3135 , B81B3/0045 , G02B7/1821 , G02B26/0858 , G02B26/101 , G02B26/105 , H04N9/3173
Abstract: A MEMS device includes a fixed structure and a mobile structure with a reflecting element coupled to the fixed structure through at least a first deformable structure and a second deformable structure. Each of the first and second deformable structures includes a respective number of main piezoelectric elements, with the main piezoelectric elements of the first and second deformable structures configured to be electrically controlled for causing oscillations of the mobile structure about a first axis and a second axis, respectively. The first deformable structure further includes a respective number of secondary piezoelectric elements configured to be controlled so as to vary a first resonance frequency of the mobile structure about the first axis.
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12.发明申请公开(公告)号：US20140286509A1
公开(公告)日：2014-09-25
申请号：US14220985
申请日：2014-03-20
Applicant: STMicroelectronics S.r.l.
Inventor： Alessandra Sciutti , Matteo Perletti , Sebastiano Conti , Roberto Carminati
CPC classification number: H04R19/005 , B81B7/0029 , B81B2201/0257 , B81B2203/0118 , B81B2203/0127 , G01L9/0073 , H04R19/04
Abstract: A microelectromechanical sensing structure for a capacitive acoustic transducer, including: a semiconductor substrate; a rigid electrode; and a membrane set between the substrate and the rigid electrode, the membrane having a first surface and a second surface, which are in fluid communication, respectively, with a first chamber and a second chamber, respectively, the first chamber being delimited at least in part by a first wall portion and a second wall portion formed at least in part by the substrate, the second chamber being delimited at least in part by the rigid electrode, the membrane being moreover designed to undergo deformation following upon incidence of pressure waves and facing the rigid electrode so as to form a sensing capacitor having a capacitance that varies as a function of the deformation of the membrane. The structure moreover includes a beam, which is connected to the first and second wall portions and is designed to limit the oscillations of the membrane.
Abstract translation: 一种用于电容式声换能器的微机电感测结构，包括：半导体衬底; 刚性电极; 以及膜，其设置在所述基底和所述刚性电极之间，所述膜具有第一表面和第二表面，所述第一表面和第二表面分别与第一腔室和第二腔室流体连通，所述第一腔室至少在 部分由第一壁部分和至少部分地由基底形成的第二壁部分，第二室至少部分地由刚性电极限定，该膜还被设计成在压力波入射之后经历变形，并且面向 刚性电极，以形成感测电容器，该感测电容器具有作为膜的变形的函数而变化的电容。 该结构还包括梁，其连接到第一和第二壁部分并被设计成限制膜的振荡。
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公开(公告)号：US20140198366A1
公开(公告)日：2014-07-17
申请号：US14151471
申请日：2014-01-09
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Carminati , Sebastiano Conti , Sonia Costantini
IPC: G02B26/08
CPC classification number: G02B26/0833 , G01B11/2518 , G02B26/0841 , G02B26/085 , G02B26/0858 , G02B26/105 , G03B21/008 , H04N5/2254 , H04N5/2256 , H04N5/2257 , H04N13/211 , H04N13/236 , H04N13/254 , Y10T29/49
Abstract: A mirror micromechanical structure has a mobile mass carrying a mirror element. The mass is drivable in rotation for reflecting an incident light beam with a desired angular range. The mobile mass is suspended above a cavity obtained in a supporting body. The cavity is shaped so that the supporting body does not hinder the reflected light beam within the desired angular range. In particular, the cavity extends as far as a first side edge wall of the supporting body of the mirror micromechanical structure. The cavity is open towards, and in communication with, the outside of the mirror micromechanical structure at the first side edge wall.
Abstract translation: 镜面微机械结构具有携带镜子元件的移动质量。 质量可旋转驱动，以反射具有期望角度范围的入射光束。 移动块悬挂在支撑体中获得的空腔上方。 空腔的形状使得支撑体不会将反射的光束阻碍在期望的角度范围内。 特别地，腔延伸到反射镜微机械结构的支撑体的第一侧边缘壁。 腔体在第一侧边缘壁处朝着反射镜微机械结构的外部打开并且与其连通。
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公开(公告)号：US12164103B2
公开(公告)日：2024-12-10
申请号：US17533890
申请日：2021-11-23
Inventor： Christopher Townsend , Roberto Carminati
Abstract: Disclosed herein is an optical module including a substrate, with an optical detector, laser emitter, and support structure being carried by the substrate. An optical layer includes a fixed portion carried by the support structure, a movable portion affixed between opposite sides of the fixed portion by a spring structure, and a lens system carried by the movable portion. The movable portion has at least one opening defined therein across which the lens system extends, with at least one supporting portion extending across the at least one opening to support the lens system. The optical layer further includes a MEMS actuator for in-plane movement of the movable portion with respect to the fixed portion.
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公开(公告)号：US11933968B2
公开(公告)日：2024-03-19
申请号：US17964672
申请日：2022-10-12
Applicant: STMicroelectronics S.r.l.
Inventor： Nicolo' Boni , Roberto Carminati , Massimiliano Merli
CPC classification number: G02B26/0858 , G02B26/101 , G03B21/008 , H02N2/028
Abstract: A microelectromechanical (MEMS) structure includes a fixed frame internally defining a cavity, and a mobile mass suspended in the cavity and movable with a first resonant rotational mode about a first rotation axis and with a second resonant rotational mode about a second rotation axis orthogonal to the first. A pair of supporting elements extends in the cavity, is rigidly coupled to the fixed frame, and is elastically deformable to cause rotation of the mobile mass about the first rotation axis. A pair of elastic-coupling elements is elastically coupled between the mobile mass and the first pair of supporting elements. Each of the elastic-coupling elements includes a first and second elastic portions, the first elastic portion being compliant to torsion about the second rotation axis. The second elastic portion is compliant to bending outside of a horizontal plane of main extension of the MEMS structure.
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Patent Agency Ranking
公开(公告)号：US11675186B2
公开(公告)日：2023-06-13
申请号：US16591854
申请日：2019-10-03
Applicant: STMicroelectronics S.r.l.
Inventor： Giorgio Allegato , Sonia Costantini , Federico Vercesi , Roberto Carminati
CPC classification number: G02B26/105 , B81C1/00317 , B81C1/00523 , G02B26/0833 , B81B2201/042 , B81C2203/0109 , B81C2203/019
Abstract: A method for making a micro-electro mechanical (MEMS) device includes forming a MEMS mirror stack on a handle layer, and applying a first bonding layer to the MEMS mirror stack. The method continues with disposing a substrate on the first bonding layer such that the MEMS mirror stack is mechanically anchored to the substrate and so as to seal against ingress of environmental contaminants, removing the handle layer, and applying a second bonding layer to the MEMS mirror stack. A cap layer is disposed on the second bonding layer such that the cap layer is mechanically anchored to the MEMS mirror stack and so as to seal against ingress of environmental contaminants.
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公开(公告)号：US11655140B2
公开(公告)日：2023-05-23
申请号：US17126929
申请日：2020-12-18
Applicant: STMicroelectronics S.r.l.
Inventor： Nicolo' Boni , Roberto Carminati , Massimiliano Merli
CPC classification number: B81B3/0072 , B81B3/0021 , G02B26/0858 , G03B21/008 , H01L41/09 , H04N9/3152 , B81B2201/042
Abstract: A micro-electro-mechanical device is formed by a fixed structure having a cavity. A tiltable structure is elastically suspended over the cavity and has a main extension in a tiltable plane and is rotatable about a rotation axis parallel to the tiltable plane. A piezoelectric actuation structure includes first and second driving arms carrying respective piezoelectric material regions and extending on opposite sides of the rotation axis. The first and the second driving arms are rigidly coupled to the fixed structure and are elastically coupled to the tiltable structure. During operation, a stop structure limits movements of the tiltable structure with respect to the actuation structure along a planar direction perpendicular to the rotation axis. The stop structure has a first planar stop element formed between the first driving arm and the tiltable structure and a second planar stop element formed between the second driving arm and the tiltable structure.
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公开(公告)号：US10407301B2
公开(公告)日：2019-09-10
申请号：US15870429
申请日：2018-01-12
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Enri Duqi , Lorenzo Baldo , Roberto Carminati
Abstract: MEMS device, in which a body made of semiconductor material contains a chamber, and a first column inside the chamber. A cap of semiconductor material is attached to the body and forms a first membrane, a first cavity and a first channel. The chamber is closed on the side of the cap. The first membrane, the first cavity, the first channel and the first column form a capacitive pressure sensor structure. The first membrane is arranged between the first cavity and the second face, the first channel extends between the first cavity and the first face or between the first cavity and the second face and the first column extends towards the first membrane and forms, along with the first membrane, plates of a first capacitor element.
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19.发明申请公开(公告)号：US20180180871A1
公开(公告)日：2018-06-28
申请号：US15603614
申请日：2017-05-24
Applicant: STMicroelectronics S.r.l.
Inventor： Sonia Costantini , Marta Carminati , Daniela Angela Luisa Gatti , Laura Maria Castoldi , Roberto Carminati
CPC classification number: G02B26/0833 , B81B3/0083 , B81B2201/032 , B81B2201/042 , B81B2203/0307 , B81B2203/058 , B81C1/00714 , B81C2203/032 , G02B26/105
Abstract: A micro-electro-mechanical (MEMS) device is formed in a first wafer overlying and bonded to a second wafer. The first wafer includes a fixed part, a movable part, and elastic elements that elastically couple the movable part and the fixed part. The movable part further carries actuation elements configured to control a relative movement, such as a rotation, of the movable part with respect to the fixed part. The second wafer is bonded to the first wafer through projections extending from the first wafer. The projections may, for example, be formed by selectively removing part of a semiconductor layer. A composite wafer formed by the first and second wafers is cut to form many MEMS devices.
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公开(公告)号：US20180031823A1
公开(公告)日：2018-02-01
申请号：US15465742
申请日：2017-03-22
Applicant: STMicroelectronics S.r.l.
Inventor： Roberto Carminati , Massimiliano Merli , Sebastiano Conti
IPC: G02B26/08 , H01L41/332 , G03B21/00 , H01L41/053
CPC classification number: G02B26/0858 , G03B21/008 , H01L41/053 , H01L41/332
Abstract: An oscillating structure with piezoelectric actuation includes first and second torsional elastic elements constrained to respective portions of a fixed supporting body and defining an axis of rotation. A mobile element is positioned between, and connected to, the first and second torsional elastic elements by first and second rigid regions. A first control region is coupled to the first rigid region and includes a first piezoelectric actuator. A second control region is coupled to the second rigid region and includes a second piezoelectric actuator. The first and second piezoelectric actuators are configured to cause local deformation of the first and second control regions to induce a torsion of the first and second torsional elastic elements.
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