Abstract:
A method for manufacturing a MEMS device is disclosed. Moreover a MEMS device and a module including a MEMS device are disclosed. An embodiment includes a method for manufacturing MEMS devices includes forming a MEMS stack on a first main surface of a substrate, forming a polymer layer on a second main surface of the substrate and forming a first opening in the polymer layer and the substrate such that the first opening abuts the MEMS stack.
Abstract:
A method for manufacturing a protective layer for protecting an intermediate structural layer against etching with hydrofluoric acid, the intermediate structural layer being made of a material that can be etched or damaged by hydrofluoric acid, the method comprising the steps of: forming a first layer of aluminium oxide, by atomic layer deposition, on the intermediate structural layer; performing a thermal crystallization process on the first layer of aluminium oxide, forming a first intermediate protective layer; forming a second layer of aluminium oxide, by atomic layer deposition, above the first intermediate protective layer; and performing a thermal crystallization process on the second layer of aluminium oxide, forming a second intermediate protective layer and thereby completing the formation of the protective layer. The method for forming the protective layer can be used, for example, during the manufacturing steps of an inertial sensor such as a gyroscope or an accelerometer.
Abstract:
A microelectromechanical system (MEMS) sensor device includes a substrate, a support structure supported by the substrate, a membrane supported by the support structure and spaced from the substrate, and a polymer layer covering the membrane.
Abstract:
The present disclosure provides one embodiment of an integrated microphone structure. The integrated microphone structure includes a first silicon substrate patterned as a first plate; a silicon oxide layer formed on one side of the first silicon substrate; a second silicon substrate bonded to the first substrate through the silicon oxide layer such that the silicon oxide layer is sandwiched between the first and second silicon substrates; and a diaphragm secured on the silicon oxide layer and disposed between the first and second silicon substrates, wherein the first plate and the diaphragm are configured to form a capacitive microphone.
Abstract:
Provided is an apparatus for harvesting/storing piezoelectric energy, including: a substrate having a groove at a side thereon; a piezoelectric MEMS cantilever having an end fixed to the substrate and the other end floating above the groove, and configured to convert and store an external vibration into electric energy; and a mass formed at one end of the piezoelectric MEMS cantilever and configured to apply a vibration, and a manufacturing method thereof.
Abstract:
A layer structure for a micromechanical component, having: a first layer, which is usable both for an electrical wiring of the component and as electrode of the component; and a second layer which is resistant to oxide etching and is disposed below the first layer, the second layer being formed essentially in one plane.
Abstract:
A method includes forming a MEMS device, forming a bond layer adjacent the MEMS device, and forming a protection layer over the bond layer. The steps of forming the bond layer and the protection layer include in-situ deposition of the bond layer and the protection layer.
Abstract:
A method of protecting a substrate during fabrication of semiconductor, MEMS devices. The method includes application of a protective thin film which typically has a thickness ranging from 3 angstroms to about 1,000 angstroms, wherein precursor materials used to deposit the protective thin film are organic-based precursors which include at least one fluorine-comprising functional group at one end of a carbon back bone and at least one functional bonding group at the opposite end of a carbon backbone, and wherein the carbon backbone ranges in length from 4 carbons through about 12 carbons. In many applications at least a portion of the protective thin film is removed during fabrication of the devices.
Abstract:
A MEMS microphone with reduced parasitic capacitance is provided. A microphone includes a protection film covering a rim-sided area of the backplate.
Abstract:
A capacitance type gyro sensor includes a semiconductor substrate, a first electrode integrally including a first base portion and first comb tooth portions and a second electrode integrally including a second base portion and second comb tooth portions, formed by processing the surface portion of the semiconductor substrate. The first electrode has first drive portions that extend from opposed portions opposed to the respective second comb tooth portions on the first base portion toward the respective second comb tooth portions. The second electrode has second drive portions formed on the tip end portions of the respective second comb tooth portions opposed to the respective first drive portions. The first drive portions and the second drive portions engage with each other at an interval like comb teeth.