Abstract:
An impedance matching network is integrated on a first die and coupled to a second die, with the first and second dies mounted on a conductive back plate. The impedance matching network comprises a first inductor bridging between the first and second dies, a second inductor coupled to the first inductor and disposed on the first die, and a metal-insulator-metal (MIM) capacitor disposed on the first die. The MIM capacitor has a first metal layer coupled to the second inductor, and a second metal layer grounded to the conductive back plate. A method for manufacturing the integrated impedance matching network comprises the steps of forming an inductor on a die, forming a capacitor on the die, coupling the capacitor to the inductor, coupling the die bottom surface and the capacitor to a conductive plate, and coupling the inductor to another inductor that bridges between the die and another die.
Abstract:
A semiconductor structure (100) includes a first substrate (110) having a first semiconductor device (112) formed therein, a second substrate (120) having a second device (122) formed therein and vertically-integrated above the first substrate (110), and a thermal isolation gap (130) disposed between the first device (112) and the second device (122). The thermal isolation gap (130) may be formed, for example, using an etched dielectric layer formed on first substrate (110), using an etched cavity in the second substrate (120), or by including a bonding layer (140) that has a gap or void incorporated therein.
Abstract:
An integrated passive device (20) includes a first wafer (22), a first integrated device (28) formed on a first surface (24) of the wafer (22), and a second integrated device (30) formed on a second surface (26) of the wafer (22), the second surface (26) opposing the first surface (24). A microelectromechanical (MEMS) device (72) includes a second wafer (74) having a MEMS component (76) formed thereon. The integrated passive device (20) and the MEMS device (72) are coupled to form an IPD/MEMS stacked device (70) in accordance with a fabrication process (90). The fabrication process (90) calls for forming (94) the second integrated device (30) on the second surface (26) of the wafer (22), constructing (100) the MEMS component (76) on the wafer (74), coupling (104) the wafers (22, 74), then creating the first integrated device (28) on the first surface (24) of the first wafer (22).
Abstract:
An impedance matching network is integrated on a first die and coupled to a second die, with the first and second dies mounted on a conductive back plate. The impedance matching network comprises a first inductor bridging between the first and second dies, a second inductor coupled to the first inductor and disposed on the first die, and a metal-insulator-metal (MIM) capacitor disposed on the first die. The MIM capacitor has a first metal layer coupled to the second inductor, and a second metal layer grounded to the conductive back plate. A method for manufacturing the integrated impedance matching network comprises the steps of forming an inductor on a die, forming a capacitor on the die, coupling the capacitor to the inductor, coupling the die bottom surface and the capacitor to a conductive plate, and coupling the inductor to another inductor that bridges between the die and another die.
Abstract:
A method of adjusting plasma processing of a substrate in a plasma reactor having an electrode assembly. The method includes the steps of positioning the substrate in the plasma reactor, creating a plasma in the plasma reactor, monitoring optical emissions emanating from a plurality of different regions of the plasma in a direction substantially parallel to the surface of the substrate during plasma processing of the substrate, and determining an integrated power spectrum for each of the different plasma regions and comparing each of the integrated power spectra to a predetermined value. One aspect of the method includes utilizing an electrode assembly having a plurality of electrode segments and adjusting RF power delivered to the one or more electrode segments based on differences in the integrated power spectra from the predetermined value. Another aspect of the invention includes altering the flow of gas to different regions of the plasma in response to differences in the integrated power spectra detected by the fiber optic sensors. Several types of novel electrode assemblies suitable for carrying out the method of the invention are also disclosed.
Abstract:
A method of making a micromechanical device including forming a dielectric layer over a sacrificial layer, wherein the dielectric layer includes silicon, oxygen and nitrogen. In on embodiment, the dielectric layer is silicon oxynitride formed using plasma enhanced chemical vapor deposition (PECVD). Silicon oxynitride can easily be formed as a low stress material, unlike silicon dioxide, and does not have a large charge trap density like silicon nitride.
Abstract:
A micro-electro-mechanical device (10) including a shorting bar (40) having a first portion (42) electrically coupled to a first input/output signal line (34) and a second portion (43) electrically uncoupled to a second input/output signal line (36). Shorting bar (40) is coupled to a moveable end (49) of a cantilever structure (44). Thus, preferably only the second portion (43) of shorting bar (40) needs to be actuated to be electrically coupled to the second input/output signal line (36).
Abstract:
A micro-electro-mechanical system (MEMS) microphone and a forming method therefore. The MEMS microphone comprises: a first substrate, the first substrate is provided with a first bonding face, the first substrate comprises an MEMS microphone component and a first conductive bonding structure arranged on the first bonding face, a second substrate, the second substrate is provided with a second bonding face, the second bonding substrate comprises a circuit and a second conductive bonding structure arranged on the second bonding face; the first substrate and the second substrate are oppositely fitted together via the first conductive bonding structure and the second conductive bonding structure. Embodiments of the present invention have a simple packaging technique and a compact size; the MEMS microphone packaging structure formed has a great performance on signal-to-noise ratio, and a great anti-interference capability.
Abstract:
Methods for fabricating crack resistant Microelectromechanical (MEMS) devices are provided, as are MEMS devices produced pursuant to such methods. In one embodiment, the method includes forming a sacrificial body over a substrate, producing a multi-layer membrane structure on the substrate, and removing at least a portion of the sacrificial body to form an inner cavity within the multi-layer membrane structure. The multi-layer membrane structure is produced by first forming a base membrane layer over and around the sacrificial body such that the base membrane layer has a non-planar upper surface. A predetermined thickness of the base membrane layer is then removed to impart the base membrane layer with a planar upper surface. A cap membrane layer is formed over the planar upper surface of the base membrane layer. The cap membrane layer is composed of a material having a substantially parallel grain orientation.
Abstract:
A micro-electro-mechanical system (MEMS) microphone may include a sensitive diaphragm and a fixed electrode corresponding to the sensitive diaphragm; at least one sensitive diaphragm support located on the surface of the sensitive diaphragm corresponding to the fixed electrode; and a sensitive diaphragm support arm coupled to the sensitive diaphragm support.