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WO/2021/050853A1 |
Methods for improving the electromechanical coupling coefficient and bandwidth of micromachined ultrasonic transducers, or MUTs, are presented as well as methods of manufacture of the MUTs improved by the presented methods.
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WO/2021/049149A1 |
A piezoelectric sensor wherein: a piezoelectric film is arranged between a first electrode and a second electrode on one surface of a flexible substrate; the first electrode, the second electrode and the piezoelectric film are covered by...
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WO/2021/049100A1 |
In a piezoelectric element (100), a second electrode layer (130) is located on a second face (112) side of a single crystal piezoelectric layer (110). The second electrode layer (130) has a hole portion (131) that faces a through-hole (1...
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WO/2021/048103A1 |
The invention relates to a method for determining a set-point voltage for a piezoelectric actuator system to achieve a desired optical response of the piezoelectric actuator system, such as an optical power. The method is based on a math...
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WO/2021/050828A1 |
A structure includes a substrate including a wafer or a portion thereof; and a piezoelectric bulk material layer comprising a first portion deposited onto the substrate and a second portion deposited onto the first portion, the second po...
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WO/2021/049292A1 |
A transducer has: a piezoelectric element (10) comprising a piezoelectric membrane (13) sandwiched between a pair of electrodes (11, 12); a membrane body (15) comprising a vibration membrane (16) that can be displaced in the membrane thi...
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WO/2021/049180A1 |
This piezoelectric sensor is provided with: a stress imparting layer having, on one surface thereof, a predetermined area where a plurality of stress imparting grooves extending in parallel with a first direction are formed; and a piezoe...
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WO/2021/043878A1 |
The invention relates to a ferroelectric, which has a piezoelectric material having a hafnium proportion of 2% or less, to the use of a ferroelectric of this type in energy generation and for implementation in memory, processor and senso...
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WO/2021/044744A1 |
The piezoelectric actuator of the present disclosure comprises: a piezoelectric element; and a case in which the piezoelectric element is housed and which deforms correspondingly with respect to the expansion and contraction of the piezo...
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WO/2021/042343A1 |
A method for forming a bulk acoustic wave resonance device, comprising: (S201) forming a first layer, which comprises: providing a first substrate; forming a piezoelectric layer located on the first substrate; forming a first electrode l...
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WO/2021/044683A1 |
[Problem] To provide a nitride piezoelectric body which has a higher performance index (at least one among d33, g33, and K2) value than aluminum nitride with no additional element, and a MEMS device using the same. [Solution] A piezoelec...
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WO/2021/037550A1 |
The invention relates to a device having an electroceramic component (1) with a first region (2) and a second region (3), a potting compound (11) which at least partially surrounds the electroceramic component (1), and a sleeve-shaped ho...
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WO/2021/039567A1 |
[Problem] To provide an actuator which is provided with: an actuator main body that has a first surface and a second surface facing each other; a first constraining member that is provided on the first surface and constrains the expansio...
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WO/2021/039358A1 |
The present disclosure relates to a drive device, a drive method, and an electronic instrument which enable an adjustment of a movement speed of a moving body to be realized. A drive circuit generates a first drive signal to be applied t...
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WO/2021/041961A1 |
Systems, methods and devices for reducing noise in health monitoring including monitoring systems, methods and/or devices receiving a health signal and/or having at least one sensor for health monitoring.
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WO/2021/041016A1 |
Filter devices and methods are disclosed. A filter device includes a substrate having a surface. A back surface of a single-crystal piezoelectric plate is attached to the surface of the substrate, portions of the single-crystal piezoelec...
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WO/2021/040614A1 |
Various embodiments may provide an electromechanical responsive film. The electromechanical responsive film may include a composition including sodium (Na), potassium (K), niobium (Nb) and oxygen (O). The composition may have a formula (...
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WO/2021/041007A1 |
An actuator assembly includes a primary electrode, a secondary electrode overlapping at least a portion of the primary electrode, and an electroactive polymer layer disposed between the primary electrode and the secondary electrode, wher...
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WO/2021/034505A1 |
A transparent optical element may include a layer of an electroactive ceramic disposed between transparent electrodes, such that the electrodes are each oriented perpendicular to a non-polar direction of the ceramic layer. Optical proper...
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WO/2021/029401A1 |
A piezoelectric band (10) comprises: a sheet-shaped, flexible base sheet (11); a sheet-shaped, flexible piezoelectric sheet (20) provided on one side of the base sheet (11); and a sheet-shaped, flexible cover sheet (12) that is provided ...
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WO/2021/030289A1 |
A method of forming a piezoelectric thin film includes sputtering a first surface of a substrate to provide a piezoelectric thin film comprising AlN, AlScN, AlCrN, HfMgAlN, or ZrMgAlN thereon, processing a second surface of the substrate...
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WO/2021/024567A1 |
This vibration structure is provided with: a frame-like member (16) having an opening; a vibration part (17) disposed in the opening; a plurality of beam parts (18) connecting the frame-like member (16) and the vibration part (17); a pie...
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WO/2021/024865A1 |
A piezo-electric element 10 is provided with: a piezo-electric element part 12 including a piezo-electric film 14 and electrodes 16 which nip the piezo-electric film 14 in a thickness direction Z; a support part 18 which supports a perip...
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WO/2021/025184A1 |
According to an embodiment of the present invention, a module for removing a misassembled semiconductor light-emitting element is characterized by comprising: a housing of which an inner space is defined by an upper plate having a nozzle...
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WO/2021/025338A1 |
An actuator according to various embodiments of the present invention comprises: a stator including a bracket, a yoke located on the bracket, and a coil for encompassing the circumference of the yoke; a permanent magnet encompassing the ...
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WO/2021/024868A1 |
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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WO/2021/019083A1 |
The invention relates to a mechanical reinforcement element (1), which has two end regions (2) and two angle regions (3), wherein the end regions (2) are arranged on two opposite end sides of the reinforcement element (1) and the angle r...
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WO/2021/018499A1 |
Disclosed is a thermo-mechanical actuator (100) comprising a piezo¬ electric module (110), the piezo-electric module comprising at least one piezo-electric element (120), wherein the thermo-mechanical actuator is configured to: • o re...
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WO/2021/021018A1 |
A device for monitoring the integrity of a membrane module. The device has a piezoelectric sensor capable of generating a voltage when exposed to vibrations and a light emitting diode electrically connected to the piezoelectric sensor, t...
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WO/2021/021723A1 |
Techniques for improving acoustic wave device structures are disclosed, including filters, oscillators and systems that may include such devices. First and second layers of piezoelectric material may be acoustically coupled with one anot...
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WO/2021/021719A1 |
Techniques for improving Bulk Acoustic Wave (BAW) resonator structures are disclosed, including filters, oscillators and systems that may include such devices. First and second layers of piezoelectric material may be acoustically coupled...
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WO/2021/019215A1 |
A vibrational lens is disclosed. The vibrational lens comprises at least two focusing plates each having a proximal and distal end. The separation between the distal ends of the at least two focusing plates is less than the separation be...
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WO/2021/013649A1 |
The present invention relates to a method for determining at least one physical characteristic value of an electromechanical oscillatory system, which comprises a piezoelectric element (10) and at least one additional element, the at lea...
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WO/2021/014381A1 |
An energy harvesting system, fastener (1), use of an energy harvesting system (10; 101; 201; 301; 401) and method for the conversion of kinetic energy into electrical energy; the harvesting system (10; 101; 201; 301; 401) being made, at ...
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WO/2021/014669A1 |
[Problem] To provide a bonded body that enables Q value improvement of an acoustic wave element. [Solution] A bonded body 9A includes a support substrate 6, a piezoelectric material substrate 1A, and a multilayer film 22 between the supp...
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WO/2021/013660A1 |
A substrate (S) having a surface coated with a piezoelectric coating (I), the coating comprising A-xMexN, wherein A is at least one of B, Al, Ga, In, Tl, and Me is at least one metallic element Me from the transition metal groups 3b, 4b,...
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WO/2021/010244A1 |
This piezoelectric film contains an iron-containing potassium sodium niobate represented by general formula (1), and contains granular crystal particles having an average aspect ratio of 3 or less. Formula (1): (KxNa1–x)a(FeyNbz)O3 I...
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WO/2021/004781A1 |
The invention relates to a semiconductor component (200) comprising at least one dielectric layer (230) and at least one first (202) and one second electrode (201). In addition, at least two mutually different defect types (212, 215, 217...
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WO/2021/004782A1 |
The invention relates to a semiconductor component (200) comprising at least one dielectric layer (230) and at least two electrodes (201, 202), wherein at least one first type of defect and one second type of defect that is different fro...
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WO/2021/004583A1 |
The invention relates to an ultrasonic actuator (1) in the form of a plate (2) having a base (3), a cover surface (4) which is geometrically similar to the base, and a lateral surface (5) which interconnects the base and the cover surfac...
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WO/2021/003087A1 |
The present disclosure provides a contact hearing device comprising a piezoelectric actuator. The attachment of the piezoelectric actuator to a tympanic membrane can vibrate the tympanic membrane based on a transmission received by the r...
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WO/2021/000121A1 |
The present utility model provides an actuator, comprising a support, a coil wound around the outside of the support, a core fixed to the inside of the support, and a magnetostrictive strain gauge fixed to the core in a stacked manner, t...
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WO/2021/002434A1 |
The present invention comprises a substrate, an electrode film, and a piezoelectric film which is a polycrystalline film comprising an alkali niobate having a perovskite structure represented by the compositional formula (K1-xNax)NbO3 (0...
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WO/2020/261909A1 |
The present invention provides: a polymer composite piezoelectric substance from which it is possible to obtain a piezoelectric film capable of generating a high sound pressure output when used in a piezoelectric loudspeaker; a piezoelec...
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WO/2020/259201A1 |
A piezoelectric sensor and a preparation method therefor, a fingerprint recognition method, and an electronic device. The piezoelectric sensor comprises a first electrode layer and a second electrode layer arranged opposite each other; a...
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WO/2020/261911A1 |
The present invention provides: a polymer composite piezoelectric body which enables the output of a higher sound pressure when used in a piezoelectric speaker and which also enables the manufacture of a piezoelectric film showing excell...
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WO/2020/261877A1 |
The present invention addresses the problem of providing a piezoelectric film capable of materializing an electroacoustic transduction film or the like that is highly durable and capable of producing an adequate level of sound pressure i...
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WO/2020/261954A1 |
Provided are an electroacoustic transducer and an electroacoustic transduction film that can suppress deterioration of the piezoelectric transduction efficiency during use under a high temperature environment. This electroacoustic transd...
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WO/2020/261837A1 |
The present invention addresses the problem of providing a piezoelectric film that makes it possible to obtain a high sound pressure and sufficient sound pressure characteristics over a wide frequency band, and to obtain a piezoelectric ...
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WO/2020/261645A1 |
This piezoelectric valve is provided with: a valve body including a gas pressure chamber which receives compressed gas supplied from the outside; a plate disposed inside the valve body; and an actuator fixed to the plate and disposed ins...
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