摘要:
Die Erfindung betrifft einen Mikroschalter mit mindestens zwei elektrisch leitfähigen, mit externen Schaltungseinheiten verbindbaren Kontaktelementen (6), deren relative Position zueinander durch eine eingeprägte Magnetkraft veränderbar ist, wobei mindestens ein magnetisierbares Kontaktelement beweglich gelagert ist, so daß mindestens zwei Schaltzustände einstellbar sind, und wobei zumindest das magnetisierbare Kontaktelement als dünne Platte (7) ausgebildet ist, die im wesentlichen parallel zu einem Trägersubstrat (1) beweglich ist, und daß beide Kontaktelemente in einer Ebene parallel zum Trägersubstrat angeordnet sind, wobei jeweils eine Seitenfläche der Kontaktelemente als Schaltfläche dient. Außerdem betrifft die Erfindung ein Verfahren zur Herstellung eines solchen Mikroschalters.
摘要:
A microelectromechanical (MEMS) device (10) is provided that includes a microelectronic substrate (40), a microactuator (20) disposed on the substrate (40) and formed of a single crystalline material, and at least one metallic structure (30) disposed on the substrate (40) adjacent the microactuator (20) such that the metallic structure (30) is on substantially the same plane as the microactuator (20) and is actuated thereby. For example, the MEMS device may be a microrelay (10). As such, the microrelay (10) may include a pair of metallic structures (32, 34) that are controllably brought into contact by selective actuation of the microactuator. While the MEMS device can include various microactuators, one embodiment of the microactuator is a thermally actuated microactuator which advantageously includes a pair of spaced apart supports (22) disposed on the substrate and at least one arched beam (24) extending therebetween. By heating the at least one arched beam (24) of the microactuator (20), the arched beams (24) will further arch. In an alternate embodiment, the microactuator is an electrostatic microactuator which includes a stationary stator and a movable shuttle. Imposing an electrical bias between the stator and the shuttle causes the shuttle to move with respect to the stator. Thus, on actuation, the microactuator moves between a first position in which the microactuator is spaced apart from the at least one metallic structure to a second position in which the microactuator operably engages the at least one metallic structure. Several advantageous methods of fabricating an MEMS device having both single crystal components and metallic components are also provided.
摘要:
A MEMS switch comprises a first and a second contact arrangement having a side facing each other, the first and the second contact arrangement movable with respect to each other and configured for providing an electric contact in a first state and for not providing the electric contact in a second state. A first contact material is arranged at the side of the first contact arrangement. A second contact material is arranged at the side of the second contact arrangement. The side of the first and/or the side of the second contact arrangement comprises a recessed region and a projected region projected with respect to the recessed region, the projected region and the recessed region separated from each other by a tear-off edge. The first and/or the second contact material is arranged at the recessed region and at the projected region of the respective side. The electric contact is provided between the first and the second contact material in the projected region of the sides and not provided in the recessed region in the first state.
摘要:
Actionneur comportant deux dispositifs comprenant chacun un élément déformable (4, 104) hors plan, ledit élément déformable (4, 104) comprenant une première extrémité fixe (4.1, 104.1) ancrée sur un substrat et une deuxième extrémité libre (4.2, 104.2) par rapport au substrat, ledit dispositif comportant également des moyens de guidage en translation de la deuxième extrémité libre (4.2) dans le plan le long d'une première direction (X), le premier élément déformable (4, 104) étant apte à être déformé hors plan par application d'un stimulus de sorte que la deuxième extrémité libre (4.2, 104.2) se rapproche de la premier extrémité fixe (4.1, 104.1) selon un mouvement de translation dans le plan. L'actionneur comportant également un élément mobile en rotation (8) autour d'un axe (Z) orthogonal au plan et relié mécaniquement aux extrémités libres (4.2, 104.2) des éléments déformables (4,104) et un élément mobile en translation (18) relié mécaniquement à l'élément mobile en rotation (8).
摘要:
L'invention concerne un procédé de fabrication, sur un substrat plan, d'un micro-contacteur actionnable par un champ magnétique comprenant : a) la gravure (42) dans une face supérieure du substrat plan de cavités formant un modèle en creux de deux lames, ces cavités présentant des flancs verticaux s'étendant perpendiculairement au plan du substrat pour former des faces verticales des lames, b) le remplissage (50) des cavités par un matériau magnétique pour former les lames, puis c) la gravure (62) dans le substrat, par un procédé de gravure isotrope, d'un caisson qui s'étend entre les faces verticales des lames et dessous et autour d'une extrémité distale d'au moins une des lames pour dégager un entrefer entre ces lames et rendre cette extrémité distale déplaçable entre une position fermée et une position ouverte.
摘要:
The present invention relates to an electrostatically actuated micro-mechanical switching device (1) with movable elements formed in the bulk of a substrate (15) for closing and releasing at least one Ohmic contact by a horizontal movement of the movable elements in a plane of the substrate (15); the switching device (1) comprising: a drive with comb-shaped electrodes (2,3), wherein the electrodes (2,3) comprise fixed driving electrodes (2) and movable electrodes (3); a movable push rod (4) being mechanically connected with the movable electrodes (3) and extending through the electrodes (2,3); a movable contact element being mechanically connected with one side of the push rod (4); at least one restoring spring (5) being mechanically connected with the push rod (4); a signal line (7) and a ground line (13), wherein the signal line (7) comprises two parts (7a,7b) being interrupted by a gap (10). It is the object of the present invention to provide a micro-mechanical switching device (1) in shunt-configuration with low loss, high isolation in a wide frequency range, low switch time at low actuation voltage and sufficient reliability, wherein the switching device is designed that way that the line impedance of the signal line and its variation is as small as possible. The object is solved by an electrostatically actuated micro-mechanical switching device (1) of the above mentioned type wherein the switching device (1) is in shunt-configuration for closing and releasing the Ohmic contact between the ground line (13) and the signal line (7), wherein the contact element comprises a movable contact beam (6) extending at least partially opposite to the signal line (7) and being electrically and mechanically connected to both parts (7a,7b) of the signal line (7), respectively; the ground line (13) comprises at least one contact bar (12) leading through the gap (10) of the signal line (7) for forming the Ohmic contact between the contact beam (6) and the ground line (13); and a contact metallization (14) is provided at least on top and on the side walls of the contact beam (6), of the signal line (7) and of the ground line (13).
摘要:
A micro electro-mechanical system switch having an electrical pathway is presented. The switch includes a first portion and a second portion. The second portion is offset to a zero overlap position with respect to the first portion when the switch is in open position (or in the closed position depending on the switch architecture). The switch further includes an actuator for moving the first portion and the second portion into contact.
摘要:
It is to provide an MEMS switch easy to manufacture, microscopic, and capable of obtaining a sufficient ON/OFF capacitance change ratio. An MEMS switch includes a substrate 46, a conductive beam 42 formed on a surface of the substrate, and three-layer structure beams B1 and B2 formed on the surface of the substrate and disposed to be opposed to the conductive beam. The MEMS switch is characterized in that : each of the three-layer structure beams includes a first conductive layer 38, 40, a second conductive layer 30, 32 and a dielectric layer 34, 36 sandwiched between the first conductive layer and the second conductive layer; the first conductive layer is opposed to the conductive beam 42; at least one of the conductive beam 42 and the three-layer structure beams is displaced on a plane parallel to the substrate 46 due to an electrostatic force so that the conductive beam 42 and the first conductive layer 38, 40 can come into contact with each other; and a conductive path is formed between the conductive beam 42 and the second conductive layer 30, 32 when the conductive beam 42 and the first conductive layer are in contact with each other.