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JPWO2009119678A |
Offer of an electrostatic induction type conversion element provided with electret with high surface charge density, and the electret. A layer (A) in which specific inductive capacity contains a high molecular compound (a) of 1.8*3.0, A ...
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JP2009212436A |
To provide an electret of which the surface potential is improved, and to provide a method for manufacturing thereof, as well as an electrostatic induction type conversion device which is equipped with the electret.The electret is consti...
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JP2009212167A |
To provide a varactor which is adaptive to applications of electronic devices including various electronic devices and communication mobile devices, and to provide an electronic device comprising the varactor and a communication mobile d...
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JP2009212168A |
To provide a variable-capacitance element wherein a desired capacitance value which corresponds to a write voltage can be freely set and a capacitance value which has been set before is maintained even when there is no write voltage, and...
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JP2009207344A |
To improve conversion efficiency of a mechanical electric energy conversion device using Electret.In a mechanical electric energy conversion device 10, as an example, an electret holding body 11, to which an electret film 12 is applied, ...
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JP4325930B2 |
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JPWO2009104699A |
Offer of an electrostatic induction type conversion element provided with electret excellent in the heat stability of an electric charge, and the electret. One or more sorts of repeat units chosen from a group which consists of a repeat ...
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JP2009182757A |
To remove dirt automatically from an electret film and a measurement electrode plate when measuring the surface voltage of the electret film integrally provided in a fixed electrode.In a surface voltage measurement method of an electret ...
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JP4310571B2 |
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JP2009177404A |
To measure potential between two poles of an electret condenser which is already assembled, in a nondestructive manner.A method is disclosed for measuring the potential between poles of the electret condenser 300 which is equipped with a...
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JP4307084B2 |
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JP4307141B2 |
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JP2009164539A |
To provide an electret structure surely securing the moisture resistance regardless of the thickness of an inorganic electret member, and also to provide its forming method, and an electret type capacitance sensor.A silicon microphone 10...
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JP2009147204A |
To obtain a variable capacitor which can control its capacitance, using a simple structure through easy and simple control.Fixed capacitors C1 to C5 are mounted on a substrate 3 which are connected in parallel. FET 1 to FET 4 are located...
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JP2009142043A |
To control AC power with a low loss and low noise while reducing a size and cost, also reducing the mounting number of components, and saving a space.A variable capacitance element of a variable capacitor C2(1VC) is connected to a fixed ...
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JP4286304B2 |
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JP2009123999A |
To provide a method for manufacturing a micro condenser microphone, which can achieve an electret process of a dielectric film of a MEMS microphone chip by using inexpensive manufacturing facilities of simple structure and can improve pr...
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JP4268205B2 |
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JP4264103B2 |
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JP4264104B2 |
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JP2009088444A |
To provide an electret having high surface charge density, and to provide an electret capacitor microphone that has the electret.The electret contains a fluorine aromatic resin consisting mainly of a fluorine aromatic polymer. The electr...
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JP2009088100A |
To provide a material for an electret having an excellent adhesion to a metallic base and a high heat resistive charge storage rate, and to provide an electret component using the electret material.A material 10 of an electret includes a...
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JP2009076613A |
To provide an electrostatic operation device capable of suppressing discharge of electric charges induced at an electrode through a spacer (projection portion) while suppressing contact between a first electrode portion and a second elec...
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JP2009076788A |
To provide a laminated ceramic element capable of precisely detecting temperature, and to provide a mounting structure thereof.The mounting structure has an NTC capacitor 1, an NTC thermistor, a choke coil, a switching circuit, a feedbac...
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JP2009508340A |
A capacitor which has multilayer structure on ceramics or a substrate of crystalline material is proposed here. It is arranged between an electrode (E1) of at least one bottom, an upper electrode (E2), and these, a dielectric (D) which c...
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JP2009507446A |
The present invention relates to a method of manufacturing a MEMS capacitor microphone, and relates to still such a MEMS capacitor microphone. It can manufacture by laminating pretreated foil (10) which has an electric conduction layer (...
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JP2009021770A |
To provide an EBG element capable of successfully performing leak cutoff to a broadband high-frequency circuit.An antenna 102 on an insulating film 101 of a substrate 100 is connected to a transmission path 104 in the insulating film 101...
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JP2009016613A |
To miniaturize a device and to improve reliability.In the capacitor array incorporating a plurality of variable capacitors C1-C4, a plurality of positive and negative electrodes are alternately stacked for the respective variable capacit...
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JP2009006313A |
To provide a novel electret article comprising a polymer exhibiting an excellent oily mist loading performance, low penetration, and a small pressure drop and a performance enhancing additive.Disclosed is an electret article in the form ...
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JP2008311387A |
To adjust a surface voltage charged on an electret dielectric film to a predetermined voltage by a simple technique.For example, when adjusting an surface voltage charged on an electret dielectric film 23 which is contained on the side o...
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JP2008300646A |
To improve yield or reliability of a variable-capacitance system in which multiple MEMS varactors including defective elements are integrated.A controller 100 for variable-capacitance elements has a directive means 108 for directing cont...
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JP2008294455A |
To detect in which direction of directions orthogonal to a substrate a physical quantity acts even while manufacture is performed by a simple manufacturing process.A movable electrode 148a can be displaced in a z axial direction (directi...
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JP4191959B2 |
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JP4181580B2 |
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JP2008277473A |
To provide an electret element capable of suppressing the reduction of charge to be stored in an electret film.The electret element 100 has: the electret film 2 capable of storing charge; and a charge outflow control film 3 that is forme...
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JP2008277996A |
To provide a variable capacitance capacitor which can easily control the characteristics, and to provide a filter circuit.The variable capacitance capacitor includes a variable capacitance element group, comprising a plurality of variabl...
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JP2008263157A |
To provide an electret element which can inhibit a charge accumulated in an electret film from being reduced.The electret element 100 includes an electret film 3 into which an electron is injected and a barrier film 4 which is located on...
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JP2008258186A |
To provide a compact variable capacity device having a high continuously variable capacity ratio.The variable capacity device comprises a variable capacity capacitor employing a ferroelectric material, a capacitor connected in series wit...
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JP2008258670A |
To provide an antenna device that realizes transmission and reception, in a frequency band having a wide bandwidth.The antenna device is equipped with a variable capacitance capacitor C2 using a dielectric material, a capacitor C1 connec...
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JP2008252340A |
To provide a tunable filter which is capable of efficiently varying a coupling capacitance between resonators with a simple structure and is suitable for integration.In the tunable filter 10, by arranging the two or more resonators 12a a...
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JP4157375B2 |
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JP2008228315A |
To provide a preferable integrated ceramic inverted-F ferroelectric antenna.The inverted-F ferroelectric antenna includes a counterpoise 102, a ceramic block, an inverted-F structure radiator 104, a bias voltage feed 300 metal inlay, a g...
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JP2008219900A |
To provide a narrowband resonant circuit for measuring the loss of the ferroelectric component.A tunable ferroelectric component (610 to 614) and a narrowband resonant circuit (610 to 620) for measuring the loss of the ferroelectric comp...
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JP2008211064A |
To provide a variable-capacity capacitor array that is excellent in controllability of a capacity value and has no change in tunability, and a variable-capacity capacitor relay.The variable-capacity capacitor array is provided with a plu...
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JP4142128B2 |
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JP4142127B2 |
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JP4141679B2 |
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JP4121362B2 |
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JP2008167474A |
To provide FE dielectric-tuned antennas and a method for frequency tuning a wireless communications antenna.The method comprises forming a radiator; forming a dielectric with ferroelectric material proximate to the radiator; applying a v...
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JP2008161036A |
To provide an electrostatic induction type converter which improves conversion efficiency between kinetic energy and electrical energy.The electrostatic induction type power generator (electrostatic induction type converter) 300 includes...
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