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JP4390796B2 |
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JP2009295969A |
To efficiently vary the capacitance of a variable capacitance element using a metal oxide film.The variable capacitance element includes: the metal oxide film having a perovskite structure; a first and a second electrode film having the ...
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JP2009296238A |
To suppress a change of an electretized amount caused by an ionizer irradiation of a dielectric film which is transduced to an electret and to reduce a change of sensitivity in a microphone.A conductive substance 4 is not grounded to the...
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JP2009290153A |
To provide a new switched capacitor where a digital switching mechanism and an analog switching mechanism are unified.The switched capacitor includes: a driving arm which has a plate-like elastic body at least one end of which is fixed t...
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JPWO2008001914A1 |
本発明は、容量値の制御性に優れ、チューナ
ビリティが可変であり、かつ、高チューナビ
リティの可変容量コンデンサアレイに関する
。電圧の印加により容量が変化する第１...
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JP4377740B2 |
A piezoelectric-driven MEMS device can be fabricated reliably and consistently. The piezoelectric-driven MEMS device includes: a movable flat beam having a piezoelectric film disposed above a substrate with a recessed portion such that t...
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JP4376910B2 |
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JPWO2007145259A1 |
本発明は、低歪み化と消費電流低減化をとも
に満足させ、さらに、耐電力、低コスト化、
回路の小型化を満足させる可変容量回路に関
する。直流電圧の印加に応じて誘電率が...
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JP2009268309A |
To provide an electrostatic operation device capable of performing operations in an optimal manner.The electrostatic operation device (electrostatic inductive type electric power generating apparatus 100) includes counter electrodes 22 a...
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JP2009267165A |
To provide a variable capacitor and an electronic device, having a structure enabling setting of field sensitivity with respect to a control voltage irrespective of a breakdown voltage with respect to a signal voltage.The variable capaci...
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JP2009268122A |
To provide a tunable matching circuit of low-loss in RF.A ferroelectric material is used in order to produce a low-loss tunable capacitor 32 and inductor 31 for using in a matching circuit 22. The matching circuit 22 is provided with a c...
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JP2009260063A |
To provide a resin foam electret which can convert electric energy into mechanical energy, or convert the mechanical energy into the electric energy, is excellent in charge retention nature at high temperature, and can easily be manufact...
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JP4357876B2 |
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JP2009253050A |
To provide an electret excellent in thermal stability of an electric charge and to provide an electrostatic induction type conversion device with the electret.The electret includes a layer comprising organic/inorganic composite materials...
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JP2009246327A |
To cause a dielectric with edges and holes to be efficiently charged.When a protrusion 110 is cooled down, the protrusion 110 contracts and the diameter of the protrusion 110 becomes smaller than the diameter of a hole 2. Then, after the...
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JPWO2009128503A |
Offer of an electrostatic induction type conversion element provided with electret with high surface potential, and the electret. A layer (A) containing resin (a) and a layer (B) containing resins (b) or inorganic substances (c) other th...
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JP4338745B2 |
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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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JPWO2007116566A1 |
外部から印加される直流バイアスによって容
量が変えられるコンデンサにおいて、コンデ
ンサ本体に備える電極の積層数を減じること
ができるとともに、直流バイアス印加に...
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JPWO2007116471A1 |
第１の電極層と第２の電極層との間に誘電体
層が形成され、外部から印加する電圧により
容量を変化させることができる容量素子であ
る。誘電体層は、Ａ2+Ｂ4+Ｏ3なる構造の...
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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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