With Significant Electrode Or Terminal Feature Patents (Class 361/278)
  • Patent number: 8040656
    Abstract: An array variable capacitor apparatus includes a line unit including a ground line and a signal line which operates as a lower electrode; and a plurality of plates which are engaged with the line unit to generate capacitance and which operate as upper electrodes, the plurality of plates being arranged in an array pattern and having different degrees of stiffness.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: October 18, 2011
    Assignees: Samsung Electronics Co., Ltd., Seoul National University Industry Foundation
    Inventors: Yun-Kwon Park, Jea-Shik Shin, Yong-Kweon Kim, Yong-Seung Bang
  • Patent number: 8028653
    Abstract: A filament post used in plasma-enhanced chemical vapor deposition has an outer shell and an inner post. An electrical potential is applied only to the inner post to ensure that there is no impact on the plasma density and the carbon film properties. The inner post and the outer shell are electrically insulated by ceramic insulators, such that no electrical potential is applied to outer shell. The stress generated in the carbon film is directly related to the electrical potential of the surface to which the film is deposited. The carbon film deposited on the outer shell of the post is not highly stressed, which significantly reduces film delamination from the filament post surfaces.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: October 4, 2011
    Assignee: Hitachi Global Storage Technologies Netherlands, B.V.
    Inventors: Eric Hwang, Jinliu Wang, Richard Longstreth White
  • Patent number: 8031459
    Abstract: A micro-device includes a movable part, a frame and a connecting part. The movable part has a main portion, a first capacitor electrode and a first driver electrode. The capacitor electrode and the driver electrode have electrode teeth extending from the main portion. The frame includes second capacitor and driver electrodes, where the second capacitor electrode has electrode teeth extending toward the first capacitor electrode, and the second driver electrode has electrode teeth extending toward the first driver electrode. The connecting part connects the movable part to the frame. The first and second capacitor electrodes have their electrode teeth overlapped in their initial position. The movable part is rotatable for varying the extent of the overlapping between the first and second driver electrodes.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: October 4, 2011
    Assignee: Fujitsu Limited
    Inventors: Xiaoyu Mi, Takeaki Shimanouchi, Masahiko Imai, Satoshi Ueda
  • Publication number: 20110235231
    Abstract: [Object] An object of the present invention is to provide a vacuum capacitor, a vacuum state of a vacuum chamber of which is maintained without bellows etc., and whose capacitance is easily adjustable, and a decrease of life of which is lessened. [Means to Solve] A fixed electrode 4 is formed by arranging a plurality of flat electrode members 5 in layers at a certain distance in an axial direction of a vacuum chamber 1b in the vacuum chamber 1b.
    Type: Application
    Filed: November 19, 2009
    Publication date: September 29, 2011
    Inventors: Eiichi Takahashi, Toshimasa Fukai, Toshinori Tatsumi, Yuichi Nishikiori, Kaoru Kitakizaki, Toru Tanimizu
  • Publication number: 20110234043
    Abstract: A variable capacitance system including a first electrode, a second electrode, and a layer of elastically deformable dielectric material positioned between the first and the second electrode. An electret forms with the first electrode a first capacitor, and the electret forms with the second electrode a second capacitor. Capacitances of the first and second capacitors vary with deformation of the dielectric layer. The first electrode, the second electrode, and the first electret follow deformations of the dielectric layer and a deformation of the dielectric layer causes an inverse variation of capacitances of the first and of the second capacitor. The first electrode includes slots in which the electret is located, wherein the edge of the slots forms with the electret located inside the slots the first capacitor, wherein the electret is made on or in the dielectric layer.
    Type: Application
    Filed: September 24, 2009
    Publication date: September 29, 2011
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE. ALT.
    Inventor: Ghislain Despesse
  • Patent number: 8009406
    Abstract: A capacitance arrangement comprising at least one parallel-plate capacitor comprising a first electrode means, a dielectric layer and a second electrode means partly overlapping each other. A misalignment limit is given. Said first electrode means comprises a first and a second electrode arranged symmetrically with respect to a longitudinal axis, said first and second electrodes have a respective first edge, which face each other, are linear and parallel such that a gap is defined there between. Said second electrode means comprises a third electrode with a first section and a second section disposed on opposite sides of said gap interconnected by means of an intermediate section, which is delimited by a function depending on a first parameter and a second parameter. One of said two parameters is adapted to be selected hence allowing calculation of the other parameter to determine the shape and size of the second electrode means.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: August 30, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Spartak Gevorgyan, Anatoli Deleniv, Per Thomas Lewin
  • Patent number: 8009407
    Abstract: A capacitor includes a multi layer structure on a ceramic or crystalline substrate. The multilayer structure includes a lower electrode, an upper electrode, and a dielectric that is tunable by a voltage applied to the electrodes. The multilayer structure is configured such that resonant oscillation modes of bulk acoustic waves can be propagated in the multilayer structure and such that the resonant frequencies of the oscillation modes are outside a first band range of between 810 and 1000 MHz, second band range of between 1700 and 2205 MHz and third band range of between 2400 and 2483.5 MHz.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: August 30, 2011
    Assignee: Epcos AG
    Inventors: Anton Leidl, Wolfgang Sauer, Stefan Seitz
  • Patent number: 7986507
    Abstract: A variable capacitor is provided which is appropriate for suppressing fluctuation in driving voltage characteristic and for achieving a larger variation ratio of static capacitance. The variable capacitor includes a fixed electrode and a movable electrode. The fixed electrode includes a first opposing face, while the movable electrode includes a second opposing face that faces the first opposing face. The movable electrode further includes a curved portion that protrudes toward the fixed electrode. The variable capacitor also includes a dielectric pattern provided on the first opposing face.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: July 26, 2011
    Assignee: Fujitsu Limited
    Inventors: Takeaki Shimanouchi, Masahiko Imai, Yu Yonezawa, Xiaoyu Mi, Satoshi Ueda
  • Patent number: 7940514
    Abstract: A micro-electro-mechanical system (MEMS) includes a first electrode interposed between a first fixed end and a second fixed end, the first electrode being movable by an actuator element. The MEMS also includes a substrate on which the first and second fixed ends are located. The MEMS further includes a second electrode formed on the substrate to face the first electrode. A shape from the first electrode to the first fixed end and a shape from the first electrode to the second fixed end are asymmetrical, the first electrode to be lowered to the second electrode.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: May 10, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tamio Ikehashi
  • Patent number: 7936553
    Abstract: An embodiment of the present invention provides a device, comprising a multilayered tunable dielectric capacitor, wherein said multilayers of tunable dielectric are adapted to be DC biased to reduce the dielectric constant; and wherein the DC bias is arranged so that the number of layers of tunable dielectric biased positively is equal to the number of layers of tunable dielectric biased negatively.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: May 3, 2011
    Assignee: Paratek Microwave, Inc.
    Inventors: James Oakes, James Martin, Andrey Kozyrev, Alexandr Prudan
  • Patent number: 7928632
    Abstract: This present invention relates generally to manufacturing objects. More particularly, the invention relates to a method and structure for fabricating an out-of-plane compliant micro actuator. The compliant actuator has large actuation range in both vertical and horizontal planes without physical contact to the substrate. Due to fringe field actuation, the compliant actuator has no pull-in phenomenon and requires low voltage by a ‘zipping’ movement compared to conventional parallel plate electrostatic actuators. The method and device can be applied to micro actuators as well as other devices, for example, micro-electromechanical sensors, detectors, fluidic, and optical systems.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: April 19, 2011
    Assignee: MCube Inc.
    Inventor: Xiao (Charles) Yang
  • Patent number: 7911761
    Abstract: The present invention provides compliant/stretchable electroactive materials and devices made from those materials which exhibit fault-tolerant properties, i.e., self-healing/clearing properties. The present invention also provides systems, which incorporate the subject materials and/or devices, as well as methods of fabricating the subject materials and devices.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: March 22, 2011
    Assignee: Bayer MaterialScience AG
    Inventors: Silmon James Biggs, Matthew Kurt Senesky
  • Patent number: 7902585
    Abstract: An integrated variable voltage diode capacitor topology applied to a circuit providing a variable voltage load for controlling variable capacitance. The topology includes a first pair of anti-series varactor diodes, wherein the diode power-law exponent n for the first pair of anti-series varactor diodes in the circuit is equal or greater than 0.5, and the first pair of anti-series varactor diodes have an unequal size ratio that is set to control third-order distortion. The topology also includes a center tap between the first pair anti-series varactor diodes for application of the variable voltage load. In preferred embodiments, a second pair of anti-series varactor diodes is arranged anti-parallel to the first pair of anti-series varactor diodes so the combination of the first pair of anti-series varactor diodes and the second pair of anti-series varactor diodes control second-order distortion as well.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: March 8, 2011
    Assignees: Technical University Delft, The Regents of the University of California
    Inventors: Lawrence E. Larson, Leonardus C. N. de Vreede
  • Patent number: 7885051
    Abstract: A semiconductor integrated circuit comprises an electrostatic actuator, an estimation circuit, a storage circuit and a bias circuit. The electrostatic actuator has a top electrode, a bottom electrode, and an insulating film disposed between the top electrode and the bottom electrode. The estimation circuit estimates the amount of a charge accumulated in the insulating film of the electrostatic actuator. The storage circuit stores a result of the estimation of the charge amount by the estimation circuit. The bias circuit changes, on the basis of the estimation result stored in the storage circuit, a drive voltage to drive the electrostatic actuator.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: February 8, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tamio Ikehashi, Hiroaki Yamazaki
  • Patent number: 7881038
    Abstract: A variable capacitor including a first electrode part, which is provided at a fixed part that includes a substrate, and a movable part, which has a second electrode part forming the capacity of said variable capacitor between itself and the first electrode part, and the movable part is displaced in response to a first drive signal to selectively go into an opposing status, in which the second electrode part opposes the first electrode part, and a non-opposing status, in which the second electrode part essentially does not oppose the first electrode part. This variable capacitor is able to obtain at least a two-value capacity in which the mutual ratio is large without specially requiring another capacitor or a switch, and it is able to obtain the desired capacity variation range by combining a plurality of capacitors.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: February 1, 2011
    Assignee: Nikon Corporation
    Inventor: Madoka Nishiyama
  • Patent number: 7872851
    Abstract: One embodiment of the present invention relates to a variable capacitor that operates without moving mechanical parts. In this capacitor electrically conductive electrodes are separated by an enclosed chamber filled with an electrically conductive material. The electrically conductive material can freely vary its position within the chamber. The capacitance of the device will vary as position of the conductive material changes due to external mechanical motion (ex: rotation vibration, etc.) of the device. Other embodiments of this device are also disclosed.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: January 18, 2011
    Assignee: Infineon Technologies AG
    Inventors: Markus Löhndorf, Terje Kvisteroey, Horst Theuss, Bjoern Blixhavn
  • Patent number: 7873191
    Abstract: A capacitive array comprising at least two capacitive entities, comprising a substrate layer. The substrate layer comprises a comb comprising at least four substantially identical teeth, and, for each capacitive entity, a set of fingers comprising one or more interlinked fingers. At least two sets of fingers comprise a different number of fingers, each finger being nested between two teeth of the comb and being substantially identical to the other fingers. The fingers of each set of fingers are substantially distributed symmetrically relative to a median axis of the comb. The comb and the fingers are integrated in a single block.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: January 18, 2011
    Assignee: STMicroelectronics S.A.
    Inventor: Jérôme Bach
  • Patent number: 7864504
    Abstract: A capacitive transducer of multi-layer construction includes two rotor plates supported by flexible springs, the plates being spaced apart and rigidly connected by a stem. One rotor plate my be used as either a pickup electrode or a grounded target electrode for determining position, displacement, or load force. The second rotor plate may be used for electrostatic actuation without interfering with or destroying circuitry associated with the first rotor plate. A number of improvements are disclosed including a hollow rotor plate structure for reduced moving mass, buckling resistant features for the springs, improved spring anchor joint design for reduced creep and hysteresis, and material selection and matching for reduced thermal sensitivity.
    Type: Grant
    Filed: October 1, 2007
    Date of Patent: January 4, 2011
    Inventor: Wayne Allen Bonin
  • Publication number: 20100328839
    Abstract: A variable-capacitance element the capacitance value of which can be freely set to a desired value corresponding to a write voltage, and, once set, is maintained also after the write voltage is removed. The invention also provides a method for adjusting a variable-capacitance element, a variable-capacitance device and an electronic apparatus. According to the invention, a variable-capacitance element 100 includes a pair of electrodes 101 and 102 formed with a ferroelectric material layer 103 in between. The variable-capacitance element is adjusted by the steps of: maximizing or minimizing the sum of electric dipole moments of the ferroelectric material layer 103; and writing a desired capacitance to the variable-capacitance element 100 by applying a desired write voltage V between the electrodes 101 and 102 of the variable-capacitance element 100 the sum of electric dipole moments of the ferroelectric material layer 103 of which has been maximized or minimized.
    Type: Application
    Filed: February 12, 2009
    Publication date: December 30, 2010
    Applicant: SONY CORPORATION
    Inventors: Masayoshi Kanno, Kazutaka Habu, Makoto Watanabe, Toshiaki Yokota
  • Publication number: 20100254068
    Abstract: A variable capacitance element provided with a substrate, a signal line provided on the substrate, a fixed electrode provided on the substrate, and a movable electrode. The movable electrode includes a movable portion that spans the signal line and extends to above the fixed electrode, and is movable with respect to the fixed electrode, and a fixed portion that is fixed to the fixed electrode across a dielectric layer.
    Type: Application
    Filed: March 15, 2010
    Publication date: October 7, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Takeaki Shimanouchi, Masahiko Imai, Satoshi Ueda
  • Patent number: 7808765
    Abstract: In an embodiment of the present invention is provided a varactor comprising a substrate, a bottom electrode positioned on a surface of the substrate, a tunable dielectric material positioned adjacent to and extending over the bottom electrode forming a step and in contact with a top electrode, and an interconnect layer in contact with the bottom electrode, the tunable dielectric and the top electrode.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: October 5, 2010
    Assignee: Paratek Microwave, Inc.
    Inventors: Xubai Zhang, Louise C. Sengupta, Jason Sun, Nicolaas DuToit
  • Patent number: 7808766
    Abstract: A capacitive device comprising at least one first and one second comb, respectively provided with interdigital fingers, adapted to be mobile relative to each other depending on the closing-spacing apart of the axes of the fingers, at least one finger of the first comb including a face opposite a face of a finger of the second comb wherein the axis of the finger of the first comb and the axis of the finger of the second comb are inclined relative to a plane orthogonal to the first direction of displacement of the combs, the plane being defined by the second and third directions perpendicular to the direction, and perpendicular to each other.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: October 5, 2010
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Ghislain Despesse, Jean-Jacques Chaillout, Thomas Jager
  • Patent number: 7800462
    Abstract: A printed board is mounted with a chip-type solid electrolytic capacitor of a four-terminal structure where a pair of positive electrode terminals are disposed at opposite positions and a pair of negative electrode terminals are disposed at opposite positions on a mounting surface. The printed board has a pair of positive electrode patterns and a pair of negative electrode patterns to which the positive electrode terminals and negative electrode terminals of the chip-type solid electrolytic capacitor are connected, respectively. The printed board further has an inductor section that is insulated from the negative electrode patterns, and electrically connects the positive electrode patterns.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: September 21, 2010
    Assignee: Panasonic Corporation
    Inventors: Junichi Kurita, Kenji Kuranuki, Youichi Aoshima, Hiroshi Higashitani, Tsuyoshi Yoshino
  • Patent number: 7782594
    Abstract: One inventive aspect relates a variable capacitor comprising first and second electrically conductive electrodes, arranged above a support structure and spaced apart from each other and defining the capacitance of the capacitor. At least one of the electrodes comprises at least one bendable portion. The bendable portion(s) are actuated by a DC voltage difference which is applied over the electrodes to vary the capacitance. In preferred embodiments, the support structure comprises a layer of higher permittivity than the atmosphere surrounding the electrodes and the electrodes configure as an interdigitated structure upon actuation. Also disclosed is a 2-mask process for producing such capacitors.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: August 24, 2010
    Assignee: IMEC
    Inventor: Xavier Rottenberg
  • Patent number: 7764510
    Abstract: An electronic apparatus that includes: a circuit board; a switch attached to the circuit board; an electronic part mounted on the circuit board; a wiring pattern extending between the switch and the electronic part; and a protrusion protruding from a surface of the wiring pattern, the protrusion being disposed adjacent to the switch on the circuit board and overlapping the wiring pattern.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: July 27, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Akihiro Shibasaki, Katsumi Inukai, Tasuku Sugimoto
  • Publication number: 20100164441
    Abstract: Apparatus and method for dense energy storage is disclosed. The inner tube of a multi-wall nanotube is reversibly withdrawn from the outer tube thereof via a facing electrode that is biased with respect to the nanotube by an external voltage source. As the inner tube is withdrawn, the potential energy of the van der Waals field between the inner tube and the outer tube increases, which manifests as a force that is directed opposite to the electrostatic force of attraction between the electrode and the inner tube. The storage apparatus is discharged by decreasing the applied voltage, which enables the van der Waals force to overcome the electrostatic force. As a consequence, the inner tube is drawn back into the outer tube. The electrode and nanotube define a variable capacitor and, as such, the change in capacitance based on movement of the inner tube results in a flow of charge to a load.
    Type: Application
    Filed: December 29, 2009
    Publication date: July 1, 2010
    Applicant: INTERSTELLAR TECHNOLOGIES CORPORATION
    Inventor: Fabrizio Pinto
  • Publication number: 20100142117
    Abstract: A variable capacitive element which includes a substrate; a signal line provided on the substrate; a movable electrode provided so as to cross over the signal line and having a first end and a second end which are fixed to the substrate; and a fixed capacitive portion provided between at least one of the both ends of the movable electrode and the substrate.
    Type: Application
    Filed: October 23, 2009
    Publication date: June 10, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Takeaki Shimanouchi, Masahiko Imai, Satoshi Ueda
  • Patent number: 7724494
    Abstract: A capacitor manufacturing method provides variable capacitors whose capacitances remain stable under the influence of temperature change. Such a variable capacitor includes a fixed electrode, a movable electrode film facing the fixed electrode, and an anchor portion that provides partial connection between the fixed electrode and the movable electrode film. For making this variable capacitor, a first electrode is formed to serve as the fixed electrode. Then, an anchor portion is formed on the fixed electrode, and a sacrifice film is formed to cover the fixed electrode but partially expose the anchor portion. A second electrode is formed on the sacrifice film to serve as the movable electrode film, bonded to the anchor portion. Finally, the sacrifice film is removed.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: May 25, 2010
    Assignee: Fujitsu Limited
    Inventors: Takeaki Shimanouchi, Masahiko Imai, Satoshi Ueda
  • Patent number: 7717858
    Abstract: Apparatus for improving health of a user is provided, including a first sensor, adapted to measure a first physiological variable, which is indicative of a voluntary action of the user. A second sensor is adapted to measure a second physiological variable, which is substantially governed by an autonomic nervous system of the user. Circuitry is adapted to receive respective first and second sensor signals from the first and second sensors, and, responsive thereto, to generate an output signal which directs the user to modify a parameter of the voluntary action.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: May 18, 2010
    Assignee: Intercure Ltd.
    Inventor: Tamir Massad
  • Patent number: 7710708
    Abstract: A two-axis geomagnetic sensor is disclosed. The two-axis geomagnetic sensor includes a first geomagnetic sensor part including a first wafer and a first geomagnetic sensor on a surface of the first wafer; and a second geomagnetic sensor part including a second wafer and a second geomagnetic sensor on a surface of the second wafer. The first and second geomagnetic sensor parts are bonded to each other, in which the first and second geomagnetic sensors positioned in an orthogonal relation to each other. Accordingly, an occupancy area of the geomagnetic sensor can be reduced. Further, the geomagnetic sensor on each axe can have the same magnetic material properties, and alignment deviation cannot be generated.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: May 4, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hae-seok Park, Joo-ho Lee, Hyung Choi, Kyoung-won Na
  • Patent number: 7675671
    Abstract: An aspect of the embodiment, a MEMS device includes a rotating unit, a first hinge, a first frame and an actuator. The actuator has a plurality of electrodes for rotating the rotating unit. The first frame has one of the electrodes. A portion of silicon layer by the electrode of the frame is chamfered.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: March 9, 2010
    Assignee: Fujitsu Limited
    Inventor: Yasuhiro Ohmori
  • Patent number: 7667948
    Abstract: A digitally controlled capacitor includes a first set of N capacitors, wherein the first set has a first capacitance value and each of the M capacitors has a second capacitance value, and at least one second set of N capacitors. The second set has the first capacitance value and each of the N capacitors has a third capacitance value that is greater than the second capacitance value. M and N are integers greater than one and M is not equal to N.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: February 23, 2010
    Assignee: Marvell Israel (M.I.S.L.) Ltd.
    Inventors: Gil Asa, David Moshe, Ido Bourstein
  • Publication number: 20100038753
    Abstract: When a positive voltage of V1 is applied to a drive capacitor with a braking voltage V2 at 0V, a moveable electrode moves toward the drive electrode, and a capacitance C of a tunable capacitor becomes smaller. When the braking voltage V2 is applied a lower portion brake electrode of the brake capacitor moves in a horizontal direction, such that the inter electrode separation distance between an upper portion brake electrode and the lower portion brake electrode becomes 0 ?m. The moveable electrode configured integrally formed with the lower portion brake electrode also moves in the horizontal direction, and the inter electrode separation distance between the moveable electrode and a fixed electrode becomes 0 ?m. Since the two electrodes make contact with each other with a dielectric layer interposed therebetween, the position of the moveable electrode can be stably maintained by frictional force between the electrodes.
    Type: Application
    Filed: July 24, 2009
    Publication date: February 18, 2010
    Applicant: OKI SEMICONDUCTOR CO., LTD.
    Inventor: Wei Ni
  • Publication number: 20100006981
    Abstract: A capacitance arrangement comprising at least one parallel-plate capacitor comprising a first electrode means, a dielectric layer and a second electrode means partly overlapping each other. A misalignment limit is given. Said first electrode means comprises a first and a second electrode arranged symmetrically with respect to a longitudinal axis, said first and second electrodes have a respective first edge, which face each other, are linear and parallel such that a gap is defined there between. Said second electrode means comprises a third electrode with a first section and a second section disposed on opposite sides of said gap interconnected by means of an intermediate section, which is delimited by a function depending on a first parameter and a second parameter. One of said two parameters is adapted to be selected hence allowing calculation of the other parameter to determine the shape and size of the second electrode means.
    Type: Application
    Filed: October 12, 2006
    Publication date: January 14, 2010
    Inventors: Spartak Gevorgyan, Anatoli Deleniv, Per Thomas Lewin
  • Patent number: 7644490
    Abstract: A method of forming an actuator and a relay using a micro-electromechanical (MEMS)-based process is disclosed. The method first forms the lower sections of a square copper coil, and then forms an actuation member that includes a core section and a horizontally adjacent floating cantilever section. The core section, which lies directly over the lower coil sections, is electrically isolated from the lower coil sections. The method next forms the side and upper sections of the coil, along with first and second electrodes that are separated by a switch gap. The first electrode lies directly over an end of the core section, while the second electrode lies directly over an end of the floating cantilever section.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: January 12, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Trevor Niblock, Peter Johnson
  • Patent number: 7646582
    Abstract: A micro-electromechanical device includes a semiconductor body, in which at least one first microstructure and one second microstructure of reference are integrated. The first microstructure and the second microstructure are arranged in the body so as to undergo equal strains as a result of thermal expansions of the body. Furthermore, the first microstructure is provided with movable parts and fixed parts with respect to the body, while the second microstructure has a shape that is substantially symmetrical to the first microstructure but is fixed with respect to the body. By subtracting the changes in electrical characteristics of the second microstructure from those of the first, variations in electrical characteristics of the first microstructure caused by thermal expansion can be compensated for.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: January 12, 2010
    Assignee: STMicroelectronics S.r.l.
    Inventors: Ernesto Lasalandra, Angelo Merassi, Sarah Zerbini
  • Patent number: 7619420
    Abstract: An apparatus includes a measurement device for measuring two capacitances. The apparatus also includes a display module that simultaneously displays at least two numerical values based on the measured capacitances.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: November 17, 2009
    Assignee: American Radionic Company, Inc.
    Inventor: Robert M. Stockman
  • Patent number: 7616082
    Abstract: The electromagnetic relay of the present invention comprises a base (10), an electromagnet (20) disposed on the base, an armature (30) supported rotatably by the base, a movable spring (40) whose one end has a movable contact (41) and the opposite end is secured to the base, a fixed contact (51) disposed opposite to the movable contact, and a card (60). The card has a coupling part (61) to be coupled to the armature and an insertion hole (62) to which the one end of the movable spring is inserted, and it deforms the movable spring elastically in conjunction with a swing motion of the armature to selectively open or close a connection between the movable contact and the fixed contact. The movable spring has a U-shaped hook formed by bending the one end of the movable spring toward the opposite end side, and the hook can pass through the insertion hole while being pushed by an inner surface of the insertion hole and being deformed elastically, and an end of the hook is engaged with the card.
    Type: Grant
    Filed: July 11, 2005
    Date of Patent: November 10, 2009
    Assignee: Matsushita Electric Works, Ltd.
    Inventor: Yoshimasa Katou
  • Patent number: 7612424
    Abstract: Nano-electromechanical device having an electrically conductive nano-cantilever wherein the nano-cantilever has a free end that is movable relative to an electrically conductive substrate such as an electrode of a circuit. The circuit includes a power source connected to the electrode and to the nano-cantilever for providing a pull-in or pull-out voltage therebetween to effect bending movement of the nano-cantilever relative to the electrode. Feedback control is provided for varying the voltage between the electrode and the nano-cantilever in response to the position of the cantilever relative to the electrode. The device provides two stable positions of the nano-cantilever and a hysteresis loop in the current-voltage space between the pull-in voltage and the pull-out voltage.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: November 3, 2009
    Assignee: Northwestern University
    Inventors: Horacio D. Espinosa, Changhong Ke
  • Publication number: 20090257167
    Abstract: Disclosed is a variable capacitor that includes signal electrodes configured to sandwich a dielectric layer so as to generate a signal electric field, and control electrodes configured to sandwich the dielectric layer so as to generate a control electric field in a direction intersecting with the signal electric field generated between the signal electrodes.
    Type: Application
    Filed: April 21, 2009
    Publication date: October 15, 2009
    Applicant: Sony Corporation
    Inventors: Masayoshi Kanno, Kazutaka Habu, Toshiaki Yokota, Makoto Watanabe
  • Publication number: 20090237858
    Abstract: A tuneable capacitor arrangement for RF use has two series coupled MEMS variable capacitors (C1,C2;C4,C5,C6,C7), varied according to a control signal. The series coupling enables the capacitor to withstand a higher voltage since this is shared by the individual capacitors in a series coupled arrangement. An increase in size of electrodes for each capacitor is compensated by a reduction in size of the springs supporting movable electrodes. These springs can have a larger stiffness value since the capacitance is larger. This means shorter springs, which can also result in a reduction in problems of stiction, resistance, and slow switching. The capacitances have a fixed and a movable electrode, with the RF signal coupled to the fixed electrode to avoid the springs needing to carry an RF signal. This can reduce the problems of inductance and resistance in the springs.
    Type: Application
    Filed: December 18, 2006
    Publication date: September 24, 2009
    Inventors: Peter G. Steeneken, Kevin R. Boyle, Antonius J.M. De Graauw, Theodoor G.S.M. Rijks, Jozef T.M. Van Beek
  • Patent number: 7593213
    Abstract: According to one embodiment, a capacitor arrangement support system includes a resonance analysis module configured to perform a resonance analysis based on data of a component producing electromagnetic radiation, a resonance point extraction module configured to extract a resonance point from an analysis result of the resonance analysis module, an electromagnetically radiated energy analysis module configured to analyze the ease of collection of electromagnetically radiated energy with respect to a resonance point extracted by the resonance point extraction module, a determination module configured to determine whether or not an absolute value of a value showing the ease of collection of electromagnetically radiated energy is larger than a preset absolute value, and a capacitor arrangement module configured to arrange a capacitor for suppressing electromagnetic radiation at a resonance point where the determination module determines that data of the component is larger the preset absolute value.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: September 22, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Motochika Okano
  • Publication number: 20090219665
    Abstract: A capacitor provides a plurality of selectable capacitance values, by selective connection of six capacitor sections of a capacitive element each having a capacitance value. The capacitor sections are provided in a plurality of wound cylindrical capacitive elements. Two vertically stacked wound cylindrical capacitance elements may each provide three capacitor sections. There may be six separately wound cylindrical capacitive elements each providing a capacitor section. The capacitor sections have a common element terminal. A pressure interrupter cover assembly is sealingly secured to the open end of case for the elements and has a deformable cover with a centrally mounted common cover terminal and a plurality of section cover terminals mounted at spaced apart locations. A conductor frangibly connects the common element terminal of the capacitor section to the common cover terminal and conductors respectively frangibly connect the capacitor section terminals to the section cover terminals.
    Type: Application
    Filed: September 9, 2008
    Publication date: September 3, 2009
    Applicant: American Radionic Company, Inc.
    Inventor: Robert M. Stockman
  • Publication number: 20090213523
    Abstract: The present invention relates to a capacitor unit for use as a run capacitor in an AC motor circuit including a grouping of two to ten capacitors connected to an integral and internal multiple position selector switch having an externally accessible atuator knob in such a way that different selector switch positions select different parallel combinations of the capacitors. The capacitors are of suitable size and electrical characteristics for use as run capacitors in an AC motor circuit and a grouping of one of the two leads of each capacitor in the group is interconnected to form a first output lead for the capacitance unit.
    Type: Application
    Filed: January 16, 2009
    Publication date: August 27, 2009
    Inventor: John L. Slaughter
  • Patent number: 7566994
    Abstract: According to an example embodiment, an apparatus is provided that produces a small-step switchable capacitor, which can have steps that are smaller in value than the smallest capacitor used in the system. In one embodiment, an input signal is connected to a switchable capacitor system that includes at least one and/or a plurality of small-step, switchable capacitors. In an example embodiment, a capacitor system may be provided that includes a first capacitance block coupled in series with a second capacitance block. In an example embodiment, the second capacitance block may include one or more switchable capacitors to provide a step in capacitance for the capacitor system between a first setting and a second setting using the one or more switchable capacitors. Also, in an example embodiment, the step in capacitance of the capacitor system may be determined based, at least in part, on a ratio of the capacitance of the second capacitance block to the capacitance of the first capacitance block.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: July 28, 2009
    Assignee: Broadcom Corporation
    Inventors: Ali Medi, Hooman Darabi
  • Publication number: 20090147436
    Abstract: The invention relates to an air variable capacitor including a mobile comb and a fixed comb. Each of the combs include a body and teeth each having an end fixed to the body and free end. The teeth of the mobile and fixed combs being interdigital and an the air-gap of the capacitor is adjustable by the transverse movement of the teeth of the mobile comb. The teeth of the mobile comb have geometric differences between one another, in order to attenuate the transverse resonance modes of the mobile comb.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 11, 2009
    Applicant: MEMSCAP
    Inventor: Beatrice Wenk
  • Patent number: 7541816
    Abstract: In a capacitive sensor, a sensing electrode is positively charged, the sensing electrode and a sensing capacitor are charge-balanced, the sensing electrode is negatively charged, and then the sensing electrode and the sensing capacitor are again charge-balanced. The sensing electrode is positively and negatively charged in the same period when the capacitive sensor is sensed. So, the invention can not only effectively improve the high-frequency external interference but also effectively resist the interference when an external direct current electrical field approaches.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: June 2, 2009
    Assignee: Generalplus Technology Inc.
    Inventors: Tung-Tsai Liao, Li Sheng Lo
  • Patent number: 7539003
    Abstract: The devices presented herein are capacitive sensors with single crystal silicon on all key stress points. Isolating trenches are formed by trench and refill forming dielectrically isolated conductive silicon electrodes for drive, sense and guards. For pressure sensing devices according to the invention, the pressure port is opposed to the electrical wire bond pads for ease of packaging. Dual-axis accelerometers measuring in plane acceleration and out of plane acceleration are also described. A third axis in plane is easy to achieve by duplicating and rotating the accelerometer 90 degrees about its out of plane axis Creating resonant structures, angular rate sensors, bolometers, and many other structures are possible with this process technology. Key advantages are hermeticity, vertical vias, vertical and horizontal gap capability, single crystal materials, wafer level packaging, small size, high performance and low cost.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: May 26, 2009
    Assignee: LV Sensors, Inc.
    Inventors: Curtis A. Ray, Janusz Bryzek
  • Patent number: 7511937
    Abstract: A variable capacitance element of the invention includes: a columnar vibrator formed inside a cylindrical hole of a supporting wall; a first circular driving electrode disposed above the columnar vibrator; a first circular capacitive electrode disposed in the middle of the columnar vibrator; a second circular driving electrode disposed on the periphery of the cylindrical hole of the supporting wall; and a second circular capacitive electrode disposed on an inner side surface of the supporting wall. An electrostatic force is increased or decreased sequentially in the circumferential direction of the second driving electrode that is divided into four parts by sequentially increasing or decreasing the driving voltage in the circumferential direction of the second driving electrode. As a result, the columnar vibrator is rotated to change the electrostatic capacitance between the first capacitive electrode and the second capacitive electrode.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: March 31, 2009
    Assignee: ALPS Electric Co., Ltd.
    Inventor: Shinji Murata
  • Patent number: 7499257
    Abstract: A micro-electro-mechanical system varactor. The varactor includes a substrate, a lower bias conductor partially overlaying the substrate, a first signal conductor partially overlaying the substrate, a dielectric layer at least partially overlaying the first signal conductor, a support structure coupled to the substrate, and a flexible structure coupled to the support structure. The flexible structure is suspended over the substrate, includes an upper bias conductor overlaying at least part of the lower bias conductor and a top conductor overlaying at least part of the first signal conductor, configured to deflect in response to a bias voltage applied between the upper bias conductor and the lower bias conductor, and configured for separation between the top conductor and the dielectric layer by a varying separation distance dependent upon the bias voltage.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: March 3, 2009
    Assignee: Motorola, Inc.
    Inventors: Robert B. Lempkowski, Lih-Tyng Hwang