Multi-level mems process
AssigneeInvenSense, Inc.
InventorsRoberto Martini, Matthew Julian Thompson, Giacomo Gafforelli, Luca Coronato, Luigi Esposito
Life of this patent
Estimating the term…
Loading patent…
AssigneeInvenSense, Inc.
InventorsRoberto Martini, Matthew Julian Thompson, Giacomo Gafforelli, Luca Coronato, Luigi Esposito
Estimating the term…
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.
A method of fabricating a multi-level microelectromechanical system (MEMS) sensor, comprising:
A multi-level microelectromechanical system (MEMS) sensor, comprising:
A method for sensing acceleration with a multi-level microelectromechanical system (MEMS) sensor, comprising:
Dependencies are inferred from the claim text.