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| Number | Title | Issue Date |
| 8148881 | Vibration sensor film, vibration actuator film, vibration reduction film, and multilayer film using them A vibration reduction system has a vibration reduction film and a control unit. The vibration reduction film is constituted of a vibration sensor film, an insulating layer, and a vibration actuator film that are stacked in this order. In each of the vibration sensor... | 04/03/2012 |
| 8125124 | Multi-layer piezoelectric element and method for manufacturing the same A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation... | 02/28/2012 |
| 8053956 | Piezoelectric actuators Microelectromechanical systems with structures having piezoelectric actuators are described. The structures each have a body that supports piezoelectric islands. The piezoelectric islands have a first surface and a second opposite surface. The piezoelectric islands ... | 11/08/2011 |
| 8049397 | Laminated piezoelectric element, jetting device provided with the laminated piezoelectric element and fuel jetting system There are some cases where cracks occur at a plurality of areas on an external electrode when a displacement quantity of a laminated piezoelectric element is large. In such cases, there is a possibility of a voltage not being applied to a portion of the laminated st... | 11/01/2011 |
| 7982373 | Piezoelectric multilayer component A piezoelectric multilayer component has a base body including a stack of dielectric layers, electrode layers and at least one predetermined breaking layer. The predetermined breaking layer is arranged at least for the most part in an inactive zone of the multilayer... | 07/19/2011 |
| 7868524 | Piezoelectric component A multiple-layer component includes at least two metal layers, at least one dielectric layer among the at least two metal layers, and a contact element that includes a porous body that electrically connects the at least two metal layers. The at least one dielectric ... | 01/11/2011 |
| 7851979 | Piezoceramic multilayer actuator, method for producing a piezoceramic multilayer actuator, and injection system A piezoceramic multilayer actuator has at least one outer electrode which can expand and provides at least two current paths between a supply potential connecting area of the outer electrode and a respective inner electrode, with which the outer electrode makes cont... | 12/14/2010 |
| 7821184 | Contacting multilayer piezo actuators or sensors A device, especially a piezo stack (2) has a plurality of stacked actuator or sensor layers with electrodes (5) or piezo stack (2) contacts. A flexible lead frame (1) is electrically connected to the electrodes (5). ... | 10/26/2010 |
| 7745981 | Piezoelectric actuator and method for manufacturing piezoelectric actuator In a method for manufacturing a piezoelectric actuator, a ceramic sintered body is prepared and a size of the ceramic sintered body is adjusted in a thickness direction defined below by grinding piezoelectric ceramic layers, included in the ceramic sintered body, lo... | 06/29/2010 |
| 7705525 | Multi-layer piezoelectric element and method for manufacturing the same A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation... | 04/27/2010 |
| 7679274 | Monolithic piezo actuator with a change in the electrode structure in the junction region, and use of the piezo actuator A piezo actuator in a monolithic multilayer design, has at least one piezoelectrically active stack element, wherein the stack element has stacked piezoceramic layers made of piezoceramic material and electrode layers arranged between the piezoceramic layers, at lea... | 03/16/2010 |
| 7633215 | Electro-mechanical energy converter and vibration wave driving At least one exemplary embodiment is directed to an electro-mechanical energy converter and a vibration wave driving apparatus that can facilitate miniaturization, high power, low cost and low voltage drive, by using a polygonal piezoelectric element with a pluralit... | 12/15/2009 |
| 7598660 | Monolithic piezoelectric element A monolithic piezoelectric element includes a stack, and the stack includes a crack-forming conductive layer arranged to intentionally form a small crack in the stack. The small crack alleviates stress, thereby preventing the occurrence of a large crack that may ext... | 10/06/2009 |
| 7569977 | Laser capacitance trimmed piezoelectric element and method of making the same A piezoelectric element suitable for use as a sensor element in a hydrophone. In a preferred embodiment, the sensor element comprises a ceramic lead zirconate titanate substrate defining opposed ends and including at least first and second conductive strip electrode... | 08/04/2009 |
| 7554251 | Multi-layer piezoelectric element and method for manufacturing the same A multi-layer piezoelectric element having high durability which allows it to increase the amount of displacement of a piezoelectric actuator under high voltage and high pressure and does not undergo a change in the amount of displacement during continuous operation... | 06/30/2009 |
| 7541722 | Electronic component and manufacturing method thereof An electronic component has a structure which prevents corrosion caused by moisture intrusion through an electrode pattern extending inwardly from an edge connecting a side and one of main surfaces of a substrate and, therefore, deterioration of a characteristic rar... | 06/02/2009 |
| 7538477 | Multi-layer transducers with annular contacts Transducer structures having multiple piezoelectric layer and annular contacts are described. ... | 05/26/2009 |
| 7525241 | Ceramic multi-layer component and method for the production thereof A multilayer ceramic component includes a stack containing ceramic layers and electrode layers interspersed among the ceramic layers. The electrode layers contain copper and define first and second internal electrodes. First and second external contacts are on diffe... | 04/28/2009 |
| 7518295 | Multilayer piezoelectric element A multilayer piezoelectric element has a laminate body in which a plurality of piezoelectric bodies and a plurality of internal electrodes are alternately laminated and sintered. The plurality of internal electrodes comprise a first electrode and a second electrode.... | 04/14/2009 |
| 7514855 | Piezoelectric actuator and method for producing the same A piezoelectric actuator includes a first ceramic sheet having an individual electrode formed thereon, a second ceramic sheet having a common electrode formed thereon, a top ceramic sheet having a surface electrode for the individual electrode and a surface electrod... | 04/07/2009 |
| 7498727 | Multi-layer piezoelectric element and method for manufacturing the same A multi-layer piezoelectric element having high durability wherein the internal electrodes and the external electrodes do not break even when operated continuously over a long time under high electric field and high pressure is provided. The multi-layer piezo... | 03/03/2009 |
| 7443080 | Laminated piezoelectric/electrostrictive device There is realized a piezoelectric/electrostrictive device of a laminated type from which a large displacement is obtained and which is highly reliable over a long period. A laminated piezoelectric/electrostrictive device 1 has: a laminated columnar article | 10/28/2008 |
| 7429817 | Multilayer piezoelectric element A multilayer piezoelectric element has a pair of outer electrodes and a multilayer ceramic body composed of piezoelectric layers and inner electrode layers which are alternately stacked. The outer electrodes are formed on a pair of electrode connecting surfaces in t... | 09/30/2008 |
| 7429813 | Piezoelectric actuator Piezoelectric actuators having ceramic layers and electrode layers, and being provided with an outer cover layer on each end face of the piezoelectric actuator. The ceramic layers and the outer cover layers each have a predetermined dielectric constant. Rapid switch... | 09/30/2008 |
| 7427822 | Piezoelectric resonator element package, and piezoelectric resonator A piezoelectric resonator element package has a base that holds a piezoelectric resonator element on which drive electrodes are formed, and a cap. Four electrode pads are formed in corners of an internal bottom surface of the base. Of the four electrode pads, the fi... | 09/23/2008 |
| 7427820 | Piezoelectric/electrostrictive film element A lower electrode 4 and an auxiliary electrode 8, a piezoelectric/electrostrictive film 5, and an upper electrode 6 are sequentially arranged in layers on a substrate 1. The lower electrode 4 is continuously formed in a regi... | 09/23/2008 |
| 7427825 | Electrical interconnections and methods for membrane ultrasound transducers Electrical interconnects are provided for CMUTs. For example, electrodes within the silicon substrate, such as the electrodes at the bottom of the void below membranes, are interconnected together within the substrate. The interconnected electrode may then be used a... | 09/23/2008 |
| 7418278 | Hand-portable devices and covers for hand-portable devices A hand portable device such as a mobile telephone 10 includes an engine assembly 12 and a cover 14, 16 for encasing the engine assembly. The device 10 further includes a closing arrangement 44, 45, 46, 50 alterable between a first ... | 08/26/2008 |
| 7411340 | Piezoelectric transformer A piezoelectric transformer with a base body is specified that has an input part and an output part, wherein at least three groups of internal electrodes are contained in at least one of these parts. The internal electrodes of each group are interconnected in an ele... | 08/12/2008 |
| 7405510 | Thermally enhanced piezoelectric element A system and method for removing unwanted heat generated by a piezoelectric element of an ultrasound transducer. Some implementations have high thermal conductivity (HTC) material placed adjacent to the piezoelectric element. The HTC material can be thermally couple... | 07/29/2008 |
| 7388318 | Thin film piezoelectric resonator, thin film piezoelectric device, and manufacturing method thereof A thin film piezoelectric device includes a substrate (12) having via holes (22) and a piezoelectric laminated structure (14) consisting of a lower electrode (15), a piezoelectric film (16), and an upper electrode (17) forme... | 06/17/2008 |
| 7385337 | Multilayer piezoelectric element A multilayer piezoelectric element is provided with a multilayer body, a first external electrode on a side face of the multilayer body, and a second external electrode outside the first external electrode. The multilayer body consists of an alternate stack of a plu... | 06/10/2008 |
| 7382083 | Piezoelectric actuater unit, manufacturing method thereof, piezoelectric structural body, and liquid ejecting apparatus using the same The present invention is a piezoelectric actuator unit 29 having piezoelectric vibrators 33 vibrating in the lamination direction of electrode layers and piezoelectric material layers which are alternately laminated. The piezoelectric vibrators are arr... | 06/03/2008 |
| 7378776 | Piezoelectric ceramic composition and piezoelectric elements using the same A piezoelectric ceramic composition includes a top-layer, a bottom-layer and at least one intermediate-layer ceramic sheets stacked to each other for sintering. An alloy layer of silver and palladium is interposed between every two ceramic sheets, and a sliver layer... | 05/27/2008 |
| 7365619 | BAW apparatus A description is given of a BAW apparatus having a first BAW resonator and a second BAW resonator which are connected antiparallel to one another so as to reduce non-linear effects, in particular harmonics. ... | 04/29/2008 |
| 7358653 | Piezoelectric element Provided is a piezoelectric element including a monolithic piezoelectric substrate that can prevent not only migration between internal electrodes, but also deterioration resulting from a decrease in the degree of polarization even when temperature changes are repea... | 04/15/2008 |
| 7355326 | Piezoelectric transformer A piezoelectric transformer, which operates in a half wavelength mode, includes an input part having input electrodes laminated in a thickness direction on a central part in a longitudinal direction of a piezoelectric element with rectangular shape, in which the inp... | 04/08/2008 |
| 7353585 | Method of poling ferroelectric materials A method of producing an actuator includes shaping a block of ferroelectric material to provide an active element of the actuator. The element includes a stack of ferroelectric layers with adjacent layers separated by electrodes arranged parallel to end faces of the... | 04/08/2008 |
| 7355327 | Laminated piezoelectric/electrostrictive element A laminated piezoelectric element is applicable as a driving source of opening and closing mechanism of an injection nozzle in a fuel injecting device. A laminated piezoelectric/electrostrictive element 1 has: a columnar laminate 10 constituted by alte... | 04/08/2008 |
| 7352115 | Piezoelectric element and piezoelectric device A piezoelectric element is provided with a multilayer body comprising an alternate stack of first internal electrodes and second internal electrodes with a piezoelectric layer in between each two of the first and second internal electrodes. The multilayer body has a... | 04/01/2008 |
