Abstract: A method of manufacturing packages having contents sealed therein, including: a step of forming cavities in a plurality of package forming areas on a first wafer; a step of bonding the first wafer and a second wafer while arranging the contents in the cavities; and a step of irradiating a bonded wafer member with a laser and separating the packages into pieces, characterized in that dummy cavities are formed on an outside of the package forming area in an outermost periphery of the first wafer in the cavity forming step.

Abstract: A liquid ejecting head includes a piezoelectric element including a first electrode, a seed layer provided on the first electrode and containing BiFeO3 with (001) plane preferential orientation, a piezoelectric layer provided on the seed layer and containing a perovskite-structure (Bi, Nd)(Fe, Mn, Al)O3 composition with (001) plane preferential orientation, and a second electrode provided on the piezoelectric layer.

Abstract: An acoustic resonator structure comprises a substrate having a trench, a conductive pattern formed in the trench, a pillar formed within the trench, and an acoustic resonator supported at a central location by the pillar and suspended over the trench.

Abstract: A resonator element has a base part, vibrating arms having first principal surfaces and second principal surfaces in front-rear relationships with each other and extending from the base part, and side surfaces connected to the first principal surfaces and the second principal surfaces on ends of the vibrating arms, and the side surfaces are slopes having tilts with respect to perpendicular lines of the first principal surfaces or the second principal surfaces and provided from the first principal surfaces to the second principal surfaces, and crystal faces.

Abstract: An ultrasound transducer includes an acoustic layer having a front side and an opposite back side. The acoustic layer is configured to convert electrical signals into ultrasound waves to be transmitted from the front side toward a target. The acoustic layer is configured to convert received ultrasound waves into electrical signals. A lens is connected to the front side of the acoustic layer. A heat sink is connected to the back side of the acoustic layer. A flex circuit is disposed between the acoustic layer and the heat sink. The flex circuit includes a backside matching layer incorporated into a body of the flex circuit. The backside matching layer is connected in thermal communication with the acoustic layer and the heat sink such that the backside matching layer is configured to conduct heat from the acoustic layer to the heat sink.

Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped-shaped stack in which a ceramic layer and an internal electrode are alternately stacked and an external electrode provided on a portion of a surface of the stack and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the stack and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component. A volume occupied by the resin component in the inner external electrode is within a prescribed range.

Abstract: A ceramic electronic component includes a rectangular or substantially rectangular parallelepiped shaped laminate in which a ceramic layer and an internal electrode are alternately laminated and an external electrode provided on a portion of a surface of the laminate and electrically connected to the internal electrode. The external electrode includes an inner external electrode covering a portion of the surface of the laminate and including a mixture of a resin component and a metal component and an outer external electrode covering the inner external electrode and including a metal component.

Abstract: An actuator includes a base member and an electro-mechanical transducer element including a first electrode, an electro-mechanical transducer film, and a second electrode. Further, the base member includes a thin wall part having a concave shape, the electro-mechanical transducer film is formed in a manner such that a film thickness of the electro-mechanical transducer film is gradually reduced from a center part of the electro-mechanical transducer film to both end parts of the electro-mechanical transducer film in at least one direction crossing a film thickness direction of the electro-mechanical transducer film.

Abstract: A method for manufacturing a piezoelectric element includes a process for forming a first conductive layer, a process for forming a piezoelectric layer having a region serving as an active region, a process for forming a second conductive layer, which overlaps with the region, a process for forming a third conductive layer, which overlaps with the region, on the second conductive layer, a process for forming an opening portion that divides the third conductive layer into a first portion and a second portion, a process for forming a resist layer that covers the opening portion and a peripheral portion at the side of the opening portion of the first portion and the second portion; a process for etching the third conductive layer to form a first conductive portion and a second conductive portion, and a process for etching the second conductive layer to form a third conductive portion.

Abstract: A piezoelectric actuator device includes a vibrator and a driver to vibrate the vibrator. The vibrator includes a lower vibration layer configured to vibrate and an upper vibration layer coupled to an upper surface of the lower vibration layer and configured to vibrate together with the lower vibration layer. The driver includes an upper electrode layer on a lower surface of the lower vibration layer, a piezoelectric layer on a lower surface of the upper electrode layer, and a lower electrode layer on a lower surface of the piezoelectric layer. The lower vibration layer of the vibrator is made of organic material. The upper vibration layer is mainly made of inorganic material. The lower vibration layer has a smaller longitudinal elastic modulus than the upper vibration layer. The piezoelectric actuator device has a large resistance to disturbance vibrations and a large warping amount of the vibrator without increasing power consumption.

Abstract: Poly(?-amino acid) which contain: (A) a glutamic acid ?-ester unit represented by formula (I): and (B) one or more kinds of units selected from a glutamic acid ?-ester unit represented by formula (II), an alanine unit, a phenylalanine unit and an N?-benzyloxycarbonyllysine unit, represented by formula (III), and a glutamic acid ?-ester unit represented by formula (IV) can be dissolved in various solvents and are useful for preparing piezoelectric elements which exhibit superior piezoelectricity.

Abstract: There is provided a piezoelectric device, including: a multilayered body in which a piezoelectric layer having a first internal electrode formed thereon and a piezoelectric layer having a second internal electrode formed thereon are alternately formed; a first insulating via formed in the first internal electrode layer; a second insulating via formed in the second internal electrode layer; a first conductive via formed in the multilayered body and penetrating through the first insulating via; and a second conductive via formed in the multilayered body and penetrating through the second insulating via, wherein a diameter of the first insulating via is larger than a diameter of the first conductive via, and a diameter of the second insulating via is larger than a diameter of the second conductive via.

Abstract: A piezoelectric unit includes a diaphragm made of ceramics, a base portion having a pressure chamber in which the diaphragm is set to a wall and a piezoelectric element having a dielectric layer provided at the opposite side of the base portion with respect to the diaphragm. In the piezoelectric unit, the roughness of a crystal of the outermost interface at the side of the piezoelectric element of the diaphragm is further smoothened than that of a ceramics material which is included in the diaphragm more inside than the interface.

Abstract: Manufacturing a semiconductor structure including modifying a frequency of a Film Bulk Acoustic Resonator (FBAR) device though a vent hole of a sealing layer surrounding the FBAR device.

Abstract: A universal air bubble detector allows for use with a variety of sizes and types of tubing. The detector maintains proper alignment of a sensor emitter and receiver with different sizes of tubing. The detector may be mounted on existing equipment or may be used to monitor a tubing at any position along the tubing, and may operate in a stand alone mode or in combination with existing equipment.

Abstract: According to one embodiment, an ink-jet print head comprises a support member including a flat portion with an ink supply aperture and an ink discharge aperture formed therein so as to circulate and supply ink, the flat portion including a recess, a base plate fitted in the recess of the support member, a nozzle plate laid over the base plate at a predetermined distance from the base plate and including a plurality of nozzles formed therein in a fixed direction, and an actuator disposed between the base plate and the nozzle plate and including a pressure chamber and a piezoelectric member, the pressure chamber being provided for each corresponding nozzle, and the piezoelectric member being provided to form a wall for the pressure chamber and configured to change capacity of the pressure chamber.

Abstract: A liquid ejecting device is manufactured by bonding a wiring substrate to a liquid ejection head by means of an adhesive film. The liquid ejection head has a pressure chamber for ejecting liquid and an air chamber disposed adjacent to the pressure chamber with a wall of a piezoelectric body interposed therebetween. A pair of electrodes is provided, one on the wall surface of the pressure chamber and the other on the wall surface of the air chamber so as to sandwich the piezoelectric body wall. The wiring substrate has a connection terminal which is to be electrically connected at least to the electrode on the pressure chamber side at the time of bonding. The liquid ejection head has an opening for introducing liquid into the pressure chamber, while the wiring substrate has a through hole to be aligned with the opening at the time of bonding.

Abstract: A crystal resonator includes: lower glass plates on which first electrodes are formed so as to extend from side surfaces to a bottom surface of the lower glass plates; a crystal plate which is provided over the lower glass plates and on which second electrodes to be coupled to the first electrodes are formed on a surface in contact with the lower glass plates; and an upper glass plate which is provided over the crystal plate; wherein the side surfaces of the lower glass plates on which the first electrodes are formed are provided with a protrusion that extends in parallel with a top surface and the bottom surface of the lower glass plates and that extends from one end to the other end of each of the side surfaces, and wherein the first electrodes are formed on the side surfaces that include surfaces of the protrusion.

Abstract: The present disclosure relates to a display device including a touch sensor and a manufacturing method thereof, and more particularly, to a display device including a touch sensor using a piezoelectric material and a manufacturing method thereof. The display device includes a first substrate, wherein a plurality of thin film transistors are disposed on the first substrate; a second substrate disposed facing the first substrate; a plurality of piezoelectric elements disposed on the second substrate; and a first sensing electrode overlapping the piezoelectric elements, the first sensing electrode being configured to transfer a sensing voltage generated as a result of pressure applied to the piezoelectric elements.

Abstract: A stress measurement sensor provided with a sensor element that operates according to the SAW principle, comprising a base composed of a first material and the sensor element, which is fixed to the base with a joining material, is to be developed such that it can also be used at higher temperatures and has improved measurement properties. In addition, it is suggested that the joining material be a glass solder.

Abstract: An acoustic wave device includes: a support substrate; a piezoelectric substrate; and a cap substrate, wherein the cap substrate includes a first region located along an outer peripheral portion of the cap substrate, a second region located along an inside of the first region and having a thickness less than a thickness of the first region, and a third region located inside the second region and having a thickness less than a thickness of the second region, and a surface of the first region is bonded to the surface of the outer peripheral portion of the support substrate, a surface of the second region is bonded to a surface of an outer peripheral portion of the piezoelectric substrate, and a surface of the third region is located away from a surface of the piezoelectric substrate to form a space for the excitation electrode to vibrate.

Abstract: A piezoelectric device package may include: a case having a plurality of terminals disposed on a lower surface thereof; a piezoelectric device disposed in the case; a temperature measuring device disposed on one surface of the piezoelectric device in the case and having a thin film form; and a cover member enclosing an upper portion of the case.

Abstract: This disclosure provides systems, methods and apparatus related to an ultrasonic sensor for detecting ultrasonic energy. In some implementations, the ultrasonic sensor includes a piezoelectric receiver layer bonded with an adhesive to an array of pixel circuits disposed on a substrate, each pixel circuit in the array including at least one thin film transistor (TFT) element and having a pixel input electrode electrically coupled to the pixel circuit. Methods of forming ultrasonic sensors include bonding piezoelectric receiver layers to TFT arrays.

Abstract: A piezoelectric device package may include: a case having a plurality of terminals formed on a lower surface thereof; a piezoelectric device formed in the case; a temperature measuring device formed on the lower surface of the case and having a thin film form; and a cover member enclosing an upper portion of the case.

Abstract: In an optical deflector including a mirror, a frame, torsion bars, first and second piezoelectric actuators coupled to both of the torsion bars, and first and second coupling bars, each of the first and second piezoelectric actuators is divided into first, second and third areas in accordance with a polarization polarity distribution obtained by performing a simulation upon the optical deflector where piezoelectric portions with no slits are hypothetically provided in the first and second piezoelectric actuators while a predetermined rocking operation is performed upon the mirror. First piezoelectric portions are formed in the first and third areas of the first piezoelectric actuator, and second piezoelectric portions are formed in the first and third areas of said second piezoelectric actuator. A first drive voltage applied to the first piezoelectric portions is opposite in phase to a second drive voltage applied to the second piezoelectric portions.

Abstract: A VCM actuator for a lens and driving the lens for focusing includes a fixed module, a mobile module and a spring module. The fixed module includes a case and the magnet module is disposed along the inner side of the case. The mobile module includes a lens holder and a coil looping the lens holder. The lens holder is movably disposed in the case and the coil is fastened to the lens holder positioning to the magnet module. The spring module abuts the fixed module and mobile module. The case has an opening and along the rim of each corner of the opening a magnet guiding tab is formed. The guiding tabs extend between the lens holder and coil and are positioned toward the gaps between the magnet module, and each magnet guiding tab has a backbone and two wing portions extending from the backbone.

Abstract: A transducer with triangular cross-sectional shaped pillars is described for suppressing lateral modes within a composite, and a method for producing the same. According to one aspect of the present application, a plurality of triangular cross-sectional shaped pillars extends outwardly from a substrate and form an array of pillars. The resulting array of pillars is configured to suppress the lateral modes of the transducer at higher operating frequencies, such as, at or above 15 MHz, at or above 20 MHz, or at or above 30 MHz.

Abstract: To fabricate a plurality of piezoelectric vibrating pieces while firmly preventing a defect, a crack, or a breakage from being brought about at a wafer in the midst of fabrication, there is provided a method of fabricating a piezoelectric vibrating piece which is a method of fabricating a plurality of piezoelectric vibrating pieces from a wafer S, the method including a film forming step of respectively forming metal films M on both faces of the wafer, a patterning step of removing a region of the metal film on an inner side of an outer peripheral end of the wafer by a constant distance H, thereafter, patterning the metal film M to outer shapes of the plurality of piezoelectric vibrating pieces, an outer shape forming step of forming outer shapes of the plurality of piezoelectric vibrating pieces at the wafer a size of which is reduced by an amount of the constant distance by selectively removing the wafer by wet etching by constituting a mask by the patterned metal film, and a removing step of removing the m

Abstract: Providing a method for manufacturing a package capable of achieving reliable anodic bonding between the bonding material and a base board wafer even when the bonding material having a large resistance value is used. Providing a method for manufacturing a package by anodically bonding a bonding material, which is fixed in advance to an inner surface of a lid board wafer made of an insulator, to an inner surface of a base board wafer made of an insulator, the method including an anodic bonding step where an auxiliary bonding material serving as an anode is disposed on an outer surface of the lid board wafer, a cathode is disposed on an outer surface of the base board wafer, and a voltage is applied between the auxiliary bonding material and the cathode, wherein the auxiliary bonding material is made of a material that causes an anodic bonding reaction between the auxiliary bonding material and the lid board wafer in the anodic bonding step.

Abstract: 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.

Abstract: A crystal oscillator and manufacturing method thereof are provided.

Abstract: A controllable polymer actuator (1) comprising a dielectric elastomeric film (2); a first (3) and a second (4) deformable electrode arranged on opposite sides of the dielectric elastomeric film such that application of a voltage between the electrodes causes an active portion (7) of the controllable polymer actuator to change topography. The controllable polymer actuator (1) further comprises a deformation controlling layer (5, 6) connected to the dielectric elastomeric film. The deformation controlling layer at least locally has a higher stiffness than the dielectric elastomeric film, and exhibits a spatially varying stiffness across the active portion (7). This may enable surface topographies that could not at all be achieved using previously known controllable polymer actuators and/or may enable a certain surface topography to be achieved with a simpler electrode pattern and/or fewer individually controllable electrodes.

Abstract: Provided is a method of producing a piezoelectric/electrorestrictive film type device including a vibrating laminate obtained by laminating electrode films and piezoelectric/electrorestrictive films on a substrate containing a cavity. The method of producing the vibrating laminate includes: producing the substrate with a cavity, forming the first photoresist film on first principal surface of substrate, irradiating substrate from the second principal surface side of the substrate, transferring the plane shape of the cavity to the first photoresist film, developing and removing the first photoresist film formed in the region where the shape of cavity was formed, forming a lowermost electrode film by plating, and forming additional films other than the lowermost electrode film constituting the vibrating laminate.

Abstract: An actuator assembly includes a housing and an actuator arranged within the housing, the actuator including a first part and a second part movable relative to the first part. An insulating material is disposed within the housing, the insulating material encapsulating at least the movable part of the actuator.

Abstract: A method of manufacturing a piezoelectric device includes the steps of bonding a first substrate to a second substrate having a toughness greater than that of the first substrate, forming a first though-hole through the first substrate from the side opposite to the side on which the second substrate is bonded, and forming a second through-hole through the second substrate at a location corresponding to the first through-hole by a formation method different from that used to form the first through-hole from the side opposite to the side on which the first substrate is bonded.

Abstract: To perform poling treatment in a simple procedure by dry process. An aspect of the invention is a magnetic field poling device including: a first holding part configured to hold a film-to-be-poled 2; a second holding part configured to hold a magnet generating a magnetic field B to the film-to-be-poled 2; and a moving mechanism configured to move the first holding part or the second holding part in a direction perpendicular to the direction of the magnetic field B.

Abstract: A polymer device includes: a pair of electrode layers; and a polymer layer provided between the pair of electrode layers and containing an acid substance.

Abstract: A polymer device includes: a pair of electrode layers; a polymer layer inserted between the pair of electrode layers; and an expansion-contraction suppression layer arranged between the pair of electrode layers, the expansion-contraction suppression layer being arranged away from the respective electrode layers, and the expansion-contraction suppression layer being configured to suppress expansion and contraction of the polymer layer.

Abstract: A method of forming an array of piezoelectric actuators on a membrane (18) which includes the steps of preparing a piezoelectric comb-like structure having an array of islands that are integrally connected by a continuous top portion and that form piezoelectric layers of the actuators, the islands having an electrode at a bottom side, attaching the comb-like structure with its bottom electrode to a surface of the membrane, removing the continuous top portion of the comb-like structure to thereby separate the actuators from one another, and forming top electrodes on the top surfaces of the piezoelectric layers of the actuators.

Abstract: A method of manufacturing a stacked thin film piezoelectric filter includes the steps of forming a lower thin film piezoelectric resonator on a substrate, measuring a frequency of the lower thin film piezoelectric resonator and adjusting the frequency, forming an acoustic coupling layer on the lower thin film piezoelectric resonator whose frequency has been adjusted, forming the stacked thin film piezoelectric filter by forming an upper thin film piezoelectric resonator on the acoustic coupling layer, and measuring a frequency of the upper thin film piezoelectric resonator and adjusting the frequency.

Abstract: A nozzle plate includes: a flow channel opening in a first surface of the nozzle plate; a liquid chamber communicating with the flow channel; and a nozzle hole communicating with the liquid chamber and opening in a second surface of the nozzle plate. The liquid chamber has a flat portion which is substantially parallel to the second surface. The nozzle hole communicates with the liquid chamber in the flat portion. A method for producing a nozzle plate includes: forming a liquid chamber which opens in a first surface of a plate-like body; forming a flat portion in a bottom of the liquid chamber; and forming a nozzle hole which communicates with the flat portion and opens in a second surface of the plate-like body.

Abstract: A portable device for treating the bites or stings of insects and harmful creatures, comprising a monolithic containing body made in a single piece and defining an internal housing space, a piezoelectric element configured for producing a predetermined difference in electrical potential, and an actuating element operable by a user and associated with said piezoelectric element to impart to the piezoelectric element a predetermined state of stress/deformation; the actuating element, the piezoelectric element and the discharge area are aligned along the operating axis. The monolithic containing body presenting a bottom part developing along the operating axis below a guide and housing portion, the bottom part defining part of the internal housing space with an overall span orthogonal to the operating axis which is constantly smaller than an overall span of the internal housing space defined by the guide and housing portion.

Abstract: Improving wind-based piezoelectric power conversion is provided. For example, a piezoelectric element affixed to a vibratory member is provided. A rigid mounting system coupled with a rotatable base is provided for said vibratory member on one end of the vibratory member. A solar generator is coupled with the rigid mounting system and at least one obstacle is provided located on the flexing side of the vibratory member. The obstacle induces a vortex in the wind passing the obstacle and arriving at the vibratory member, which enhances wind-induced displacement in the vibratory member.

Abstract: A method in which at least one piezoceramic sensor, which converts every mechanical force to which it is subjected into an electrical signal and having a Curie temperature higher than 200° C., is solidarized directly onto the surface of a metal support element of a vehicle braking element, which during use faces a vehicle element to be braked. While in contact with such a surface, an electrical circuit is implemented that picks up and eventually processes the electrical signal, the electrical circuit being connected with a connector integrated with the metal support element. An electrically insulating layer sandwiches the at least one piezoceramic sensor and the electrical circuit, and a block of friction material with an underlying damping layer is formed upon the electrically insulating layer. After forming the block of friction material, the piezoceramic sensor is polarized by applying a predetermined potential difference thereto by means of the connector.

Abstract: The invention relates to a multi-layer composite (2, 2.1, 2.2, 18) comprising at least two electroactive layers (4, 6) positioned between a first electrically conductive layer (12) and a second electrically conductive layer (14), wherein at least one electrically conductive sub-layer (8) is positioned between the at least two electroactive layers (4, 6), and wherein at least one of the at least two electroactive layers (4, 6) is a piezo layer (6), wherein at least one other of the at least two electroactive layers (4, 6) is a dielectric elastomer layer (4).

Abstract: The invention relates to an element arranged to cooperate with another part so as to form an encapsulation device for a component including the element at least partially coated with a metallization. According to the invention, the metallization includes at least one metal layer protected by an intermetallic compound which is coated by a non-diffused portion of a material whose melting point is lower than 250° C.

Abstract: Aspects of the subject disclosure include, for example, constructing a mechanical resonating structure by applying an active layer on a surface of a compensating structure, wherein the compensating structure comprises one or more materials having an adaptive resistance to deform that reduces a variance in a resonating frequency of the mechanical resonating structure, wherein at least the active layer and the compensating structure form a mechanical resonating structure having a plurality of layers of materials, and wherein a thickness of each of the plurality of layers of materials results in a plurality of thickness ratios therebetween. Other embodiments are disclosed.

Abstract: A dual output accelerometer having first and second output channels, comprises a supporting base, a first transducer comprising a plurality of inter-connected first piezoelectric elements, a second transducer comprising a plurality of inter-connected second piezoelectric elements and a seismic mass. Each of the first piezoelectric elements and the second piezoelectric elements are interleaved with one another, and are co-located with the seismic mass, the co-located first and second piezoelectric elements and the seismic mass being fastened to the supporting base by a rigid mechanical coupling. The interleaved first and second piezoelectric elements provide an improved first output channel to second output channel matching.

Abstract: An ink jet print head can be formed using a laser to melt a plating layer interposed between a piezoelectric actuator and a circuit layer bump. The plating layer can be formed on the circuit layer bump, the piezoelectric actuator, or both, and a laser beam output by the laser is used to melt the plating layer to provide a laser weld. In another embodiment, the circuit layer bump or the trace itself functions as the plating layer, which is melted using a laser to provide the laser weld.

Abstract: A method of forming an actuator includes depositing a photoimageable material to form a first photoimageable layer on a piezoelectric layer; patterning the first photoimageable layer to form an aperture; and disposing a first conductive layer on the first photoimageable layer. An actuator device formed by this method includes the photoimageable material. The first conductive layer partially overlies the first photoimageable layer such that a first portion of the first conductive layer contacts the first photoimageable layer and a second portion of the first conductive layer electrically contacts the piezoelectric layer in the aperture.