Stmicroelectronics S.r.l.

Andrea Opreni

Gabriele Gattere

Attilio Frangi

Valentina Zega

Manuel Riani

MEMS actuator including: a substrate; a first and a second semiconductive layer; a frame including transverse regions formed by the second semiconductive layer, elongated parallel to a first direction and offset along a second direction, the frame being movable parallel to the second direction. The MEMS actuator includes, for each transverse region: corresponding front rotor regions, which are fixed to the transverse region and are suspended above the substrate; a first and a second stator region, which are formed by the first semiconductive layer in such a way that, when the frame is in rest position, the transverse region is laterally offset with respect to the first and the second stator regions and a first front rotor region partially faces the first stator region, and in such a way that, during a translation of the frame along the second direction, the first and/or a second front rotor region at least partially face the second stator region, when the transverse region begins to superimpose on the first stator region.

Long stroke MEMS actuator resilient to the pull-in and electronic system including the same

The present disclosure is directed to a detection structure for a vertical-axis resonant accelerometer. The detection structure includes an inertial mass suspended above a substrate and having a window provided therewithin and traversing it throughout a thickness thereof. The inertial mass is coupled to a main anchorage, arranged in the window and integral with the substrate, through a first and a second anchoring elastic element of a torsional type. The detection structure also includes at least a first resonant element having longitudinal extension, coupled between the first elastic element and a first constraint element arranged in the window. The first constraint element is suspended above the substrate, to which it is fixedly coupled through a first auxiliary anchoring element which extends below the first resonant element with longitudinal extension and is integrally coupled between the first constraint element and the main anchorage.

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Terno d'Isola, Italy

Andrea Opreni