Abstract:
A Synchronous Modulation Resonator (SMR) device, the device includes a resonator having coupled to a Vd source and a Vr source, wherein the Vd is DC biased, wherein the Vr is AC, wherein the resonator provides a resonator output in response to Vd and Vr, a Sigma Delta Modulator (SDM) coupled to the resonator and to the Vr source, wherein the SDM provides a signal output in response to the resonator output and to the Vr, and a digital output block coupled to the SDM, wherein the digital output block is configured to provide a digital signal representation of the resonator output, in response to the signal output.
Abstract:
An integrated circuit includes a substrate member having a surface region and a CMOS IC layer overlying the surface region. The CMOS IC layer has at least one CMOS device. The integrated circuit also includes a bottom isolation layer overlying the CMOS IC layer, a shielding layer overlying a portion of the bottom isolation layer, and a top isolation layer overlying a portion of the bottom isolation layer. The bottom isolation layer includes an isolation region between the top isolation layer and the shielding layer. The integrated circuit also has a MEMS layer overlying the top isolation layer, the shielding layer, and the bottom isolation layer. The MEMS layer includes at least one MEMS structure having at least one movable structure and at least one anchored structure. The at least one anchored structure is coupled to a portion of the top isolation layer, and the at least one movable structure overlies the shielding layer.
Abstract:
A semiconductor device having multiple MEMS (micro-electro mechanical system) devices includes a semiconductor substrate having a first MEMS device and a second MEMS device, and an encapsulation substrate having a top portion and sidewalls forming a first cavity and a second cavity. The encapsulation substrate is bonded to the semiconductor substrate at the sidewalls to encapsulate the first MEMS device in the first cavity and to encapsulate the second MEMS device in the second cavity. The second cavity includes at least one access channel at a recessed region in a sidewall of the encapsulation substrate adjacent to an interface between the encapsulation substrate and the semiconductor substrate. The access channel is covered by a thin film. The first cavity is at a first atmospheric pressure and the second cavity is at a second atmospheric pressure. The second air pressure is different from the first air pressure.
Abstract:
A method for fabricating an integrated MEMS device and the resulting structure therefore. A control process monitor comprising a MEMS membrane cover can be provided within an integrated CMOS-MEMS package to monitor package leaking or outgassing. The MEMS membrane cover can separate an upper cavity region subject to leaking from a lower cavity subject to outgassing. Differential changes in pressure between these cavities can be detecting by monitoring the deflection of the membrane cover via a plurality of displacement sensors. An integrated MEMS device can be fabricated with a first and second MEMS device configured with a first and second MEMS cavity, respectively. The separate cavities can be formed via etching a capping structure to configure each cavity with a separate cavity volume. By utilizing an outgassing characteristic of a CMOS layer within the integrated MEMS device, the first and second MEMS cavities can be configured with different cavity pressures.
Abstract:
A portable proximity device and method of operation thereof. The method for proximity detection implemented on a portable device can include determining an initial perturbation data, a tracking point data, and a stable position data with a physical sensor of the portable device. The initial perturbation data can include previous state data and current state data. The tracking point data can include one or more track data. An action to be performed can be determined, by a processor within the portable device, based on the initial perturbation data, the tracking point data, and the stable position data. The portable proximity device can include a physical sensor and a processor configured to perform these steps.
Abstract:
An integrated MEMS inertial sensor device. The device includes a MEMS inertial sensor overlying a CMOS substrate. The MEMS inertial sensor includes a drive frame coupled to the surface region via at least one drive spring, a sense mass coupled to the drive frame via at least a sense spring, and a sense electrode disposed underlying the sense mass. The device also includes at least one pair of quadrature cancellation electrodes disposed within a vicinity of the sense electrode, wherein each pair includes an N-electrode and a P-electrode.
Abstract:
A monolithic integrated electronic device includes a substrate having a surface region and one or more integrated micro electro-mechanical systems and electronic devices provided on a first region overlying the surface region. Each of the integrated micro electro-mechanical systems and electronic devices has one or more contact regions. The first region has a first surface region. One or more trench structures are disposed within one or more portions of the first region. A passivation material overlies the first region and the one or more trench structures. A conduction material overlies the passivation material, the one or more trench structures, and one or more of the contact regions. The device also has one or more edge bond pad structures within a vicinity of the one or more bond pad structures, which are formed by a singulation process within a vicinity of the one or more bond pad structures.
Abstract:
A method for a MEMS device comprises determining in a computer system, a first driving signal for the MEMS device in response to a first time delay and to a base driving signal, applying the first driving signal to the MEMS device to induce the MEMS device to operate at a first frequency, determining a second driving signal for the MEMS device in response to a second time delay and to the base driving signal, applying the second driving signal to the MEMS device to induce the MEMS device to operate at a second frequency, determining a first quality factor associated with the MEMS device in response to the first frequency and the second frequency, determining a quality factor associated with the MEMS device in response to the first quality factor, and determining whether the quality factor associated with the MEMS device, exceeds a threshold quality factor.
Abstract:
A method for fabricating a multiple MEMS device includes providing a semiconductor substrate having a first and second MEMS device, and an encapsulation wafer with a first cavity and a second cavity, which includes at least one channel. The first MEMS is encapsulated within the first cavity and the second MEMS device is encapsulated within the second cavity. These devices is encapsulated within a first encapsulation environment at a first air pressure, and encapsulating the first MEMS device within the first cavity at the first air pressure. The second MEMS device within the second cavity is then subjected to a second encapsulating environment at a second air pressure via the channel of the second cavity.
Abstract:
A multi-axis integrated MEMS inertial sensor device. The device can include an integrated 3-axis gyroscope and 3-axis accelerometer on a single chip, creating a 6-axis inertial sensor device. The structure is spatially configured with efficient use of the design area of the chip by adding the accelerometer device to the center of the gyroscope device. The design architecture can be a rectangular or square shape in geometry, which makes use of the whole chip area and maximizes the sensor size in a defined area. The MEMS is centered in the package, which is beneficial to the sensor's temperature performance. Furthermore, the electrical bonding pads of the integrated multi-axis inertial sensor device can be configured in the four corners of the rectangular chip layout. This configuration guarantees design symmetry and efficient use of the chip area.