|| List of recent Piezo-related patents
A self-charging power pack (300) includes a cathode (312) and an anode (310) that is spaced apart from the cathode (312). An electrolyte (318) is disposed between the anode (310) and the cathode (312).
|B-stage film adhesive compatible with aqueous ink for printhead structures interstitial bonding in high density piezo printheads fabrication for aqueous inkjet|
A method for forming an ink jet printhead comprises processing an epoxy adhesive such that negative effects from physical contact with particular inks are reduced or eliminated. Conventional adhesives processed using conventional techniques are known to gain weight and squeeze out when exposed to certain inks such as ultraviolet inks, solid inks, and aqueous inks.
A piezoelectric fan includes a vibrating plate including blades and a base that are integral. Piezoelectric elements are mounted on the blade on the side of the base.
|Electronic device and method of manufacturing the electronic device|
An electronic device includes a substrate; and a plurality of thin-film elements formed on the substrate. Further, the thin-film element includes a thin-film section having a function selected from a group including piezoelectric effect, inverse piezoelectric effect, charge storage, semiconductivity, and conductivity, and the plurality of thin-film elements includes the thin-film sections having two or more different functions..
An exemplary embodiment of the present invention includes a support unit, at least two or more connection units extended from the support unit, a lens coupling unit connected to each of the connection units, formed at an inner surface with a window and coupled to at least one or more sheets of lenses, and a piezoelectric driving unit formed at each of the connection units for ascending or descending the connection units and the lens coupling unit.. .
|Fast optical shuttering system|
The system (1) has at least one fabry-pérot cavity (3) with an adjustable gap (e), of which a gap value known as the nominal value allows a laser beam (4) of corresponding frequency to pass through said fabry-pérot cavity (3), controllable piezoelectric actuation means (5a), capable of causing said gap (e) to vary, within a range of gap values including said nominal value, and a control unit (6) to control said actuation means (5a) so that it causes the gap (e) to vary in accordance with a periodic time function.. .
|Localized key-click feedback|
Disclosed herein are techniques and systems for providing simulated, haptic feedback that is local to physical, non-actuating keys of a keyboard. A keyboard includes a plurality of non-actuating keys defined in a cover portion of the keyboard, a plurality of force-producing mechanisms coupled to a substrate underneath and adjacent the cover portion.
|Light emitting key|
A light emitting key is disclosed. A through hole is made through piezoresistive layer; a light source is arranged under the bottom of the light emitting key.
|Bulk acoustic wave resonator comprising a boron nitride piezoelectric layer|
A bulk acoustic wave (baw) resonator structure comprises: a first electrode disposed over a substrate; a piezoelectric layer disposed over the first electrode, the piezoelectric layer comprising boron nitride (bn); and a second electrode disposed over the first piezoelectric layer.. .
An oscillator includes: a piezoelectric material to vibrate; a first inverting amplifier; a second inverting amplifier; a first output electrode to apply an output signal of the first inverting amplifier to the piezoelectric material; a second output electrode to apply an output signal of the second inverting amplifier to the piezoelectric material; a first input electrode to receive a voltage signal generated by the piezoelectric material and output the voltage signal to the first inverting amplifier; and a second input electrode to receive the voltage signal and output the voltage signal to the second inverting amplifier, wherein the first and second output electrodes are coupled to the piezoelectric material so that faces of the piezoelectric material move in opposite directions, and the first and second input electrodes are coupled to the piezoelectric material so that the voltage signals are input to the first and second input electrodes.. .
|Arrangement for driving and drive method for a piezoelectric actuator|
A method is disclosed for driving a piezoelectric actuator with a piezoelectric stack, which is operated as an actuating element of an injector. The piezoelectric stack is polarized during production by a polarization process initially with a first field strength, which results in a first length of the piezoelectric stack.
A piezoelectric device includes a first electrode film, a piezoelectric film disposed on the first electrode film, and a second electrode film disposed on the piezoelectric film. At least one of the first and second electrode films is composed of an alloy, and a main component of the alloy is a metal selected from the group consisting of ti, al, mg, and zn.
|Thin-film piezoelectric element, thin-film piezoelectric actuator, thin-film piezoelectric sensor, hard drive disk, and inkjet printer|
A thin film piezoelectric element according to the present invention includes a potassium sodium niobate thin film having a structure in which a plurality of crystal grains are present in a film thickness direction; and a pair of electrode films sandwiching the potassium sodium niobate thin film. When the potassium sodium niobate thin film is divided into three regions of the same thickness in the film thickness direction and average crystal grain sizes a1, a2, and a3 of the respective regions are determined, a ratio m/m of the smallest average crystal grain size m among a1, a2, and a3 to the largest average crystal grain size m among a1, a2, and a3 is 10% to 80%.
|Piezoelectric bulk - wave resonator|
A piezoelectric bulk-wave resonator has a single-crystal linbo3 substrate whose euler angles are in the ranges of about (78° to 106°, 78° to 104°, 18° to 53°), a first driver electrode on a first main surface of the single-crystal linbo3 substrate, and a second driver electrode on a second main surface. The first driver electrode and the second driver electrode overlap with the single-crystal linbo3 substrate therebetween.
|Thin film bulk acoustic resonator and method for manufacturing same|
A thin film bulk acoustic resonator and a method of manufacturing the same is disclosed. The thin film bulk acoustic resonator includes an acoustic resonator including a first electrode, a second electrode, and a piezoelectric layer disposed between the first electrode and the second electrode; an air gap disposed below the acoustic resonator and above a substrate to reflect the acoustic wave; and an anchor disposed on each of both surfaces of the air gap and having the same thickness as the air gap..
|Piezoelectric vibrating device|
Provided is a piezoelectric vibrating device including a case provided with a certain space therein, a piezoelectric vibrating member provided in the case and vibrating according to an applied voltage, a weight member provided in the case and connected to a part of the piezoelectric vibrating member in a vibration direction of the piezoelectric vibrating member, and a limitation member for limiting movement of the weight member.. .
|Piezoelectric polymer material and method for producing same|
A piezoelectric polymer material comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a dsc method of from 40% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation morc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 μm, of from 40 to 700.. .
|Piezoelectric mems microphone|
A piezoelectric mems microphone comprising a multi-layer sensor that includes at least one piezoelectric layer between two electrode layers, with the sensor being dimensioned such that it provides a near maximized ratio of output energy to sensor area, as determined by an optimization parameter that accounts for input pressure, bandwidth, and characteristics of the piezoelectric and electrode materials. The sensor can be formed from single or stacked cantilevered beams separated from each other by a small gap, or can be a stress-relieved diaphragm that is formed by deposition onto a silicon substrate, with the diaphragm then being stress relieved by substantial detachment of the diaphragm from the substrate, and then followed by reattachment of the now stress relieved diaphragm..
|Method for manufacturing a piezoelectric ceramic body|
The present invention relates to a method of manufacturing a piezoelectric ceramic body and devices therefrom. The method comprises mixing a piezoelectric ceramic powder with a polymer binder and surfactant to form a slip mixture, casting the slip mixture into a mold and setting to the slip mixture in the mold to form a green body, cutting the green body to form a cut green body with an array of micron-sized ceramic elements and separation, and sintering the cut green body to form a sintered ceramic body.
|Piezoelectric ceramic and piezoelectric device containing the same|
A piezoelectric ceramic contains a major proportion of potassium sodium niobate and has a carbon content after firing of 55 to 1,240 ppm by mass.. .
|Piezoelectric valve, and optical granulated substance sorter equipped with air-blowing means that uses this piezoelectric valve|
A piezoelectric valve whose assembly work can be efficiently performed. A piezoelectric valve according to this invention includes a valve main body having a gas pressure chamber which receives compressed gas supplied from the outside, a plate which is disposed inside the valve main body and is fixed to the valve main body, and actuators each of which has a valve element, a piezoelectric element generating, in the form of a displacement, driving force required for operation of the valve element, and a displacement magnification mechanism for magnifying a displacement of the piezoelectric element and causing the magnified displacement to act on the valve element, are fixed to each of two surfaces of the plate, and are disposed inside the valve main body together with the plate..
|Heat dissipating system|
A heat dissipating system including a casing body, a heat source and a piezoelectric fan is provided. The casing body includes an upper casing and a bottom case, wherein at least one of the upper casing and the bottom casing includes at least one air inlet.
|Stress-detecting element, sensor module, and electronic apparatus|
A stress-detecting element includes a support body, a support film, a first piezoelectric element, first and second elastic parts. The support body has an opening part with first and second rectilinear sections extending parallel to each other.
|Ultrasound probe and method of producing the same|
An ultrasound probe comprises: a backing material; a plurality of inorganic piezoelectric elements arranged on a top surface of the backing material; a first acoustic matching layer separated into a plurality of pieces disposed on the plurality of inorganic piezoelectric elements; and a second acoustic matching layer separated into a plurality of pieces disposed on the first acoustic matching layer, wherein the second acoustic matching layer comprises an upper organic layer constituting a plurality of organic piezoelectric elements, and a lower organic layer for performing, together with the upper organic layer, acoustic matching for the plurality of inorganic piezoelectric elements.. .
|Method and device for controlling a scanning probe microscope|
The present invention relates to a method for controlling a scanning probe microscope having a probe (2) with a tip (21) for interacting with a sample (4), and a nanoscanner (1) for retaining the sample (4) or the probe (2), comprising the steps of monitoring the extension of the piezo element (1) along a first direction (r) along which the tip (21) is moved towards the sample (4), and adjusting the level of the probe (2) along the first direction (r) by means of an additional actuator (3), when the nanoscanner (1) exhibits an extension below or above a threshold value. The invention further relates to a device (100) for controlling a scanning probe microscope..
|Electronic device and system for controlling applications implementing at least one piezoelectric, electrostrictive or magnetostrictive transducer|
The electronic device (1) for controlling comprises an electric power generator (10) suitable for supplying at least one piezoelectric, electrostrictive or magnetostrictive transducer (2), with a control signal (s), electronic controlling means (11) capable of automatically controlling the electric power generator by using a control macro-function (m), and an electronic memory (112) in which the following are stored: a first family (a) of control functions comprising one or a plurality of different elementary control functions (an), making it possible to adjust the amplitude of the control signal (s), a second family (t) of control functions comprising one or a plurality of different elementary control functions (tn), making it possible to adjust the duration of the control signal (s), a third family (c) of control functions comprising a plurality of different elementary control functions (cn), making it possible to adjust the control signal (s) cycle, at least said control macro-function (m), which is made up of the assembly of at least three elementary control functions chosen respectively from among the three families of control functions (a, t, c) recorded in the memory.. .
|Self-oscillating loop based piezoelectric power converter|
The present invention relates to a piezoelectric power converter comprising an input driver electrically coupled directly to an input or primary electrode of the piezoelectric transformer without any intervening series or parallel inductor. A feedback loop is operatively coupled between an output voltage of the piezoelectric transformer and the input driver to provide a self-oscillation loop around a primary section of the piezoelectric transformer oscillating at an excitation frequency.
|Piezoelectric power converter with bi-directional power transfer|
The present invention relates to a bi-directional piezoelectric power converter comprising a piezoelectric transformer. The piezoelectric transformer comprises an input electrode electrically coupled to a primary section of the piezoelectric transformer and an output electrode electrically coupled to an output section of the piezoelectric transformer to provide a transformer output signal.
|Micro-lens for high resolution microscopy|
A method and apparatus for nanoscopy comprising a salt microlens. The microlens-based nanoscope comprises a conventional microscope, a microlens, and a xyz piezoelectric stage is shown (see fig.
|Cantilevered micro-valve and inkjet printer using said valve|
A micro-valve includes an orifice plate including an orifice and a cantilevered beam coupled in spaced relation to the orifice plate and moveable between positions where the orifice is closed and opened by the cantilevered beam. The cantilevered beam includes one or more piezoelectric layers that facilitate bending of the cantilevered beam in response to the application of one or more electrical signals to the one or more piezoelectric layers.
|Method for manufacturing piezoelectric actuator|
A method for manufacturing a piezoelectric actuator is disclosed that includes forming a vibration plate, forming a plurality of electrodes on the vibration plate, forming a piezoelectric layer on the electrodes, and forming a common electrode on the piezoelectric layer.. .
A filter device includes a piezoelectric substrate, an idt arranged on a major surface of the piezoelectric substrate to define a surface acoustic wave resonator, a wiring electrode that is electrically connected to the idt, and an acoustic member located on a major surface of the piezoelectric substrate near or adjacent to the idt and that has an acoustic impedance different from that of the piezoelectric substrate. The wiring electrode that is to be disposed in the vicinity of the idt is located on the acoustic member..
|Elastic wave device|
An elastic wave device includes a resonator and an inductor. One end of the inductor is connected to the resonator, and the other end of the inductor is connected to a ground electrode or a signal electrode.
|Nanoporous piezoelectric polymer films for mechanical energy harvesting|
Piezoelectric materials based on nanoporous polymer foams are provided. Also provided are nanogenerators incorporating the piezoelectric materials, piezoelectric energy harvesters incorporating the nanogenerators and methods of making and using the same.
|Piezoelectric device and method for manufacturing same|
A resin is provided so as to cover four side faces of a piezoelectric multilayer body integrally and thus is effectively prevented from peeling from the piezoelectric multilayer body, whereby high adhesion is attained between the piezoelectric multilayer body and the resin. At the same time, the resin covers dicing surfaces in the side faces of the piezoelectric multilayer body, thereby effectively restraining the piezoelectric body and the electrodes from producing particles..
|Piezoelectric actuation device|
This invention relates to a piezoelectric actuation device and more particularly but not exclusively, to a piezoelectric actuation device with three piezoelectric actuator sets. The device includes a first clamp arrangement being displaceable between an engaged position and a disengaged position and a second clamp arrangement being displaceable between an engaged position and a disengaged position.
|Vibration generating apparatus|
There is provided a vibration generating apparatus including: a piezoelectric element fixedly attached to a vibration transfer member and expanded and contracted in a direction from an inner surface thereof toward an outer surface thereof or in a direction from the outer surface thereof toward the inner surface thereof when power is applied thereto; and a vibration element connected to the piezoelectric element to vibrate.. .
Disclosed is piezoelectric vibrator including a piezoelectric vibrator unit. The piezoelectric vibrator has a vibrating portion, a mass attached on the vibrating portion and having an connecting portion attached on the vibrating portion and at least one extending portion extending from the connecting portion and away from the vibrating portion, and a holder having a stopping portion disposed between the extending portion of the mass and the vibrating portion.
A bulk acoustic wave resonator structure that isolates the core resonator from both environmental effects and aging effects. The structure has a piezoelectric layer at least partially disposed between two electrodes.
|Vibration limit switch|
A vibration limit switch with a membrane, which can be set into oscillation, and a drive unit for setting the membrane into oscillation and/or for detecting an oscillation of the membrane, with the drive unit comprising at least one electromagnetic drive and one piezo-electric drive.. .
|Electronic component element and composite module including the same|
An electronic component element includes a piezoelectric substrate and a comb-shaped electrode located on one principal surface of the piezoelectric substrate. A support layer is arranged around the comb-shaped electrode.
A bearing includes at least an inner ring (12), an outer ring (11), and rolling bodies arranged between the inner and outer rings, one of the rings being designed to turn and the fixed, and one of the rings (11) including an inducing element (30) is designed to generate an inducing electromagnetic field, the other of the rings (12) including an electrical circuit (25) in which an induced current is generated when one of the rings turns in relation to the other of the rings, and when the inducing element (30) generates an inducing electromagnetic field, wherein the inducing element designed to generate an inducing electromagnetic field includes a module having a piezoelectric effect and/or a module having a thermoelectric effect (35).. .