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WO/1982/001250A1 |
A capacitance transducer has a central chamber (53, 55) with a conductive diaphragm (36) disposed therein to separate the chamber into at least two portions (53 and 55), at least one portion having an electrical conductor (61, 63) dispos...
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WO/1981/000786A1 |
Thick film capacitors with screened electrodes can not be laser trimmed without damage to the dielectric. To solve this problem a thick film capacitor, with a first electrode (12), at least one dielectric layer formed from paste (14, 16)...
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JP7462711B2 |
Transmitter system based on an ultra-high charge density electret is disclosed. The ultra-high charge density electret includes a three-dimensional structure having a plurality of sidewalls. A porous silicon dioxide film is formed on the...
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JP2024032769A |
[Problem] The present invention provides an electret sheet that has excellent durability against repeatedly applied pressing force, that is, excellent compression recovery properties, and can suppress stuffiness even when attached to the...
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JP7426647B2 |
An electret includes an electret layer. The electret layer is formed by subjecting a composite film in which inorganic dielectric particles are dispersed and held in a base film to a polarization treatment. The inorganic dielectric parti...
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JP2024012855A |
The present invention provides a device that can have a negative dielectric constant. A device 10 capable of having a negative dielectric constant includes a pair of electrodes 11 and 12 and a conductor 13 disposed between the pair of el...
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JP7411022B2 |
To provide an electret sheet which still retains high piezoelectricity even under a high-temperature environment.An electret sheet according to the present invention comprises an electrostatically charged porous sheet, of which the volum...
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JP2024500291A |
The multilayer ceramic radio frequency mixer can include a first end, a second end, a third end, and a fourth end. The plurality of interleaved electrodes include a first set of electrodes connected to the first terminus, a second set of...
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JP7402546B2 |
The present disclosure relates to a method of fabricating a liquid leak sensor and, more particularly, to a method of fabricating a liquid leak sensor, which is cheap and can be easily fabricated by consecutively disposing a nonconductiv...
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JP7392015B2 |
In the present specification, provided is a calcium lithium niobate dielectric composition comprising a calcium lithium niobate dielectric having a composition represented by chemical formula 1 which is KCa_xLi_yNb_4O_13, wherein x satis...
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JP7390687B2 |
An electret (1) comprises a substrate (10) and an electret layer (2) formed on a surface of the substrate. The electret layer is a composite metal compound comprising two or more different metal elements, and is obtained by processing po...
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JP7381183B2 |
To provide an electret sheet which still retains high piezoelectricity even under a high-temperature environment.An electret sheet according to the present invention comprises an electrostatically charged porous sheet, of which the volum...
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JP7378087B2 |
An electret (1) comprises a complex oxide having an ABO_3-type perovskite structure comprising two different metal elements (A and B). The composite oxide, in a polarized state, allows at least one part of one metal element among the met...
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JP7370517B2 |
A power generation element (1) is provided with: a polymer fiber body (FB) formed by three-dimensionally depositing electrically chargeable non-piezoelectric polymer fibers; electrodes (121, 122); and a holding member (11). The polymer f...
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JP7369399B2 |
To provide a manufacturing method for manufacturing a vibration power generation element or a vibration element at low cost.A manufacturing method of a vibration element includes the steps of: preparing a conductive substrate; forming a ...
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JP2023149171A |
To provide a laminated piezoelectric sheet with small variations in an output voltage without impairing the piezoelectric properties of an electret film, and a piezoelectric sheet that can be manufactured continuously while improving the...
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JP7359435B2 |
To provide a variable capacitance element and a resonator with variable frequency adaptable to high frequency with a compact and simple structure.The variable capacitance element 101 has a first electrode layer 11, a second electrode lay...
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JP7357265B2 |
To provide an electret element capable of taking out many electrical charges, and to provide an electronic apparatus.An electret element 10 includes an electret film (A), a first non-adhesive isolating layer (B1) provided on at least one...
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JP2023139080A |
To provide a controller and a system for adjusting a voltage-adjustable capacitor.A system includes a voltage-adjustable capacitor and a controller for adjusting the capacitor. In the system, a controller 200 includes: at least one analo...
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JP7354564B2 |
To provide an electret film with long charging life.The resin electret film has the following condition: a maximum absorption peak intensity rate=I (a first surface)/I (a second surface) between 2800 cm-1 and 3150 cm-1 in an infrared abs...
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JP7341463B2 |
To provide an electret for which a step of implanting a charge is not required, and a vibration power generating element which has a long life because of using the electret.A vibration power generating element has a configuration having ...
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JP2023110020A |
To provide a method for solving the problem of a low capacitance value at high voltage in a tunable multilayer capacitor.A multilayer capacitor comprises a first active electrode 14 in electrical contact with a first active termination 1...
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JP7311330B2 |
To provide a heat-resistant electret element requiring no pattern etching on an electret layer and enabling reflow mounting of the electret layer on a printed board, and a vibration power generation element using the same.A heat-resistan...
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JP7307359B2 |
The present invention addresses the problem of providing an organic piezoelectric film having a high piezoelectric property, high transparency, and low retardation.　The organic piezoelectric film of the present disclosure has a total l...
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JP2023073863A |
To provide a highly efficient power generator which can sufficiently use a power generation surface enlarged by nanostructuring.A power generator includes: a porous elastic body having a carbon material on at least an inner surface of a ...
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JP7280579B2 |
To provide an electret arranged by a liquid crystal resin, which is high in surface electric charge density, and superior in charge retention property.An electret is arranged by performing a corona discharge treatment on a liquid crystal...
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JP7271641B2 |
To provide an electret sheet which still retains high piezoelectricity even under a high-temperature environment.An electret sheet according to the present invention comprises an electrostatically charged porous sheet, of which the volum...
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JP7258796B2 |
A MEMS element includes: a base; a fixed electrode having a plurality of fixed comb teeth, a fixed electrode pad and a support fastening portion; and a movable electrode having a plurality of movable comb teeth which are interdigitated w...
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JP7240504B2 |
Provided is a method for producing an energy-conversion film that exhibits no variation in in-plane piezoelectric performance and has excellent uniformity in in-plane piezoelectric performance. This method for producing an energy-convers...
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JP7239322B2 |
A tunable multilayer capacitor is provided. The capacitor comprises first active electrodes that are in electrical contact with a first active termination and alternating second active electrodes that are in electrical contact with a sec...
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JP7229448B1 |
The variable capacitance element (1) includes a sealed container (2) in which gas is sealed, a first electrode (3) provided inside the sealed container (2) and grounded, and a sealed container ( 2) and a second electrode (4) arranged opp...
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JP7221582B2 |
To provide an electret sheet which still retains high piezoelectricity even under a high-temperature environment.An electret sheet according to the present invention comprises an electrostatically charged porous sheet, of which the volum...
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JP7199971B2 |
To provide an electret excellent in electrical characteristics and mechanical characteristics.The electret of the present invention is composed of a cured product of a curable composition. The curable composition contains a polymerizable...
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JP2022184722A |
To provide a long-life electret device that prevents an electrical charge deterioration of an electret element enclosed within a sealed space.An electret device includes a package member, a lid member and an electret element. The lid mem...
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JP2022183079A |
To provide an electret sheet which reduces coming-out of charges over time, and can maintain excellent piezoelectricity over a long period of time.An electret sheet contains a foam sheet that contains a synthetic resin and is charged, wh...
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JP7089619B2 |
Methods, systems, and devices for controlling a variable capacitor. One aspect features a variable capacitance device that includes a capacitor C1), a first transistor (M1), a second transistor (M2), and control circuitry. The control ci...
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JP2022524063A |
RF power variable capacitors can operate at least 50W over the MHz range. This capacitor has an HDK-NDK composite ceramic dielectric. HDK (high dielectric constant) components include, for example, an active matrix of barium titanate str...
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JP7037144B2 |
A method of manufacturing a MEMS vibration element having a fixed electrode, a movable electrode, and an elastic supporting unit that elastically supports the movable electrode with respect to the fixed electrode includes: etching a base...
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JP7036538B2 |
To provide an electret sheet which develops superior piezoelectricity even with a feeble stress.An electret sheet according to the present invention comprises an electrostatically charged porous sheet, of which the compression modulus is...
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JP2022518124A |
A controller and a system for adjusting a voltage-adjustable capacitor are provided. The controller can include at least one analog / digital converter configured to receive at least one input signal and convert at least one input signal...
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JP2022038899A |
To provide a power generation element using an electret that can further improve the amount of power generation.A convex portion 11 made of an electret is provided on the surface. The electret preferably consists of a ferroelectric polar...
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JP7031779B1 |
To provide a technique capable of contributing to operability related to a change in capacitance. A plurality of series circuits SC1 in which a first electrode 1 and a second electrode 2 located at a predetermined distance from each othe...
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JP2022031820A |
To provide a voltage tunable capacitor having improved properties that can be employed in a wider range of possible applications.A four-termination tunable cascade configuration multilayer capacitor 49 includes a first active electrode 3...
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JP7003344B2 |
This variable-capacitance element (1) comprises: a container (2) having a hollow cylindrical shape, the container (2) being such that a gas is sealed in a space part (2e) provided between the outer peripheral surface and the inner periph...
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JP6959013B2 |
To provide an electret sheet which develops superior piezoelectricity even with a feeble stress.An electret sheet according to the present invention comprises an electrostatically charged porous sheet, of which the compression modulus is...
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JP6948036B2 |
The present invention improves the performance of an electronic device. According to the present invention, an electronic device comprises a first electrode Ea1, a second electrode Eb1 which is arranged so as to face the first electrode ...
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JP2021145502A |
To provide a power generation device using a graphene.A power generation device 1 according to a certain embodiment of the present invention, comprises: an electret 10; a first electrode 11 arranged so as to be adjacent to the electret 1...
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JP6931660B2 |
Provision of a piezoelectric element which uses a lightweight and flexible electret material and an electrode layer which is also lightweight, has high conductivity and good flexibility to easily receive electrical signals from an electr...
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JP6928124B2 |
The present disclosure provides an adjustable capacitor comprising a ferroelectric dielectric layer, a first electrode and a second electrode disposed on opposite sides of the ferroelectric dielectric layer. The adjustable capacitor furt...
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JP6923852B2 |
To provide an element including: a first electrode; an intermediate layer; and a second electrode, the first electrode, the intermediate layer, and the second electrode being disposed in this order, the intermediate layer including an or...
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