摘要:
A MEMS device and method of making same is disclosed. In one embodiment, a micro-switch includes a base assembly comprising a movable structure bearing a contact pad. The base assembly is wafer-scale bonded to a lid assembly comprising an activator and a signal path. The movable structure moves within a sealed cavity formed during the bonding process. The signal path includes an input line and an output line separated by a gap, which prevents signals from propagating through the micro-switch when the switch is deactivated. In operation, a signal is launched into the signal path. When the micro-switch is activated, a force is established by the actuator, which pulls a portion of the movable structure upwards towards the gap in the signal path, until the contact pad bridges the gap between the input line and output line, allowing the signal to propagate through the micro-switch.
摘要:
According to one embodiment, a MEMS includes a first electrode, a first auxiliary structure and a second electrode. The first electrode is provided on a substrate. The first auxiliary structure is provided on the substrate and adjacent to the first electrode. The first auxiliary structure is in an electrically floating state. The second electrode is provided above the first electrode and the first auxiliary structure,
摘要:
MEMS Device having Electrothermal Actuation and Release and Method for Fabricating. According to one embodiment, a microscale switch is provided and can include a substrate and a stationary electrode and stationary contact formed on the substrate. The switch can further include a movable microcomponent suspended above the substrate. The microcomponent can include a structural layer including at least one end fixed with respect to the substrate. The microcomponent can further include a movable electrode spaced from the stationary electrode and a movable contact spaced from the stationary electrode. The microcomponent can include an electrothermal component attached to the structural layer and operable to produce heating for generating force for moving the structural layer.
摘要:
A MEMS device and method of making same is disclosed. In one embodiment, a micro-switch includes a base assembly comprising a movable structure bearing a contact pad. The base assembly is wafer-scale bonded to a lid assembly comprising an activator and a signal path. The movable structure moves within a sealed cavity formed during the bonding process. The signal path includes an input line and an output line separated by a gap, which prevents signals from propagating through the micro-switch when the switch is deactivated. In operation, a signal is launched into the signal path. When the micro-switch is activated, a force is established by the actuator, which pulls a portion of the movable structure upwards towards the gap in the signal path, until the contact pad bridges the gap between the input line and output line, allowing the signal to propagate through the micro-switch. Prior to bonding, the MEMS structures are annealed on a first wafer and the conductive traces and other metals are annealed on a second wafer to allow each wafer to be processed separately using different processes, e.g., different annealing temperatures.
摘要:
The fabrication of a semiconductor fixed structure defining a volume, for example of a MEMS micro electro-mechanical system includes, determining thicknesses beforehand depending on the functional distances associated with elements. At least one element is formed on a substrate by thermal oxidation of the substrate so as to form an oxide layer followed by selective etching of the oxide layer so as to define the volume in an etched portion by baring the underlying substrate so as to define the element in an unetched portion, and later oxidation of the substrate so as to form an oxide layer, in order to obtain the elements at the functional distances.
摘要:
Systems and methods for forming a configurable power supply uses a plurality of dual substrate MEMS switches to couple a plurality of power cells to provide a selectable, or variable, output voltage. The same circuit may output two different voltages to power two different circuits of the device, or may distribute the load evenly amongst the cells. Thus, the configurable power supply may extend the lifetime and improve the reliability of the device, or decrease its weight, size and cost.
摘要:
A MEMS hysteretic thermal actuator may have a plurality of beams disposed over a heating element formed on the surface of the substrate. The plurality of beams may be coupled to a passive beam which is not disposed over the heating element. One of the plurality of beams may be formed in a first plane parallel to the substrate, whereas another of the plurality of beams may be formed in a second plane closer to the surface of the substrate. When the heating element is activated, it heats the plurality of beams such that they move the passive beam in a trajectory that is neither parallel to nor perpendicular to the surface of the substrate. When the beams are cooled, they may move in a different trajectory, approaching the substrate before moving laterally across it to their initial positions. By providing one electrical contact on the distal end of the passive beam and another stationary electrical contact on the substrate surface, the MEMS hysteretic actuator may form a reliable electrical switch that is relatively simple to manufacture and operate.
摘要:
A movable device simultaneously enabling reduction of size down to the submicron level, higher speed operation, a streamlined production process, low costs, and greater reliability. A movable device provided with bottom electrodes and a basic conductive layer fixed to a substrate, an elastic shaft of a carbon nanotube with a bottom end fixed on the basic conductive layer and standing up, and a top structure including a top electrode spaced away from the bottom electrode and fixed to a top end of the elastic shaft, wherein when applying voltage between a bottom electrode and the top electrode, the top electrode displaces relatively to the bottom electrodes within an allowable range of elastic deformation of the elastic shaft.
摘要:
A method of manufacturing electrical parts is provided, which method comprises the steps of: forming a photoresist on a part of the surface of a substrate; forming a metal layer on the surface of the substrate after the photoresist has been formed; removing a part of the metal layer; removing a metal oxide film formed on the: surface of the metal layer as a result of removing a part of the metal layer; and removing the photoresist. With this method the contact resistance on the surfaces of the electrical parts can be decreased.
摘要:
Systems and methods for forming an electrostatic MEMS plate switch include forming a deformable plate on a first substrate, forming the electrical contacts on a second substrate, and coupling the two substrates using a hermetic seal. The deformable plate may have at least one shunt bar located at a nodal line of a vibrational mode of the deformable plate, so that the shunt bar remains relatively stationary when the plate is vibrating in that vibrational mode. The hermetic seal may be a gold/indium alloy, formed by heating a layer of indium plated over a layer of gold. Electrical access to the electrostatic MEMS switch may be made by forming vias through the thickness of the second substrate.