22 results about "Electrovibration" patented technology

A piezoelectric device is provided with: a package having a recess in which an electrode pad is located; and a piezoelectric vibration element bonded to the electrode pad by a bonding member. The piezoelectric vibration element has a substantially rectangular shape in plan view, and has a vibration portion and a thick portion that is arranged in at least an X-direction along the longitudinal direction of the piezoelectric vibration element with respect to the vibration portion and that is thicker than the vibration portion. The bonding member bonds the thick portion and the electrode pad at least at two locations. The center position of the bonding member in plan view is located in the X direction in a range of 0.21-0.61 times the first length of the piezoelectric vibration element in the X direction from the side surface on the thick portion side.

The present invention provides a piezoelectric vibrating piece that can suppress the occurrence of a short circuit between excitation electrodes in the groin area between a pair of vibrating arms. [Solution] The piezoelectric vibrating piece 3 comprises a piezoelectric plate 30 having a pair of vibrating arms 31 and 32 extending from a base 35 in the same direction, and a first excitation electrode 41 and a second excitation electrode 42 provided on each of the pair of vibrating arms 31 and 32 to generate an electric field on each of the pair of vibrating arms 31 and 32. The front surface 35a of the base 35 is located between the pair of vibrating arms 31 and 32 and has a crotch 50 on which the first excitation electrode 41 and the second excitation electrode 42 are provided. The crotch 50 has a residue region 51 defined as the area where etching residue 55 is formed when viewed from the thickness direction of the piezoelectric plate 30, and a non-residue region 52 defined as the area where etching residue 55 is not formed when viewed from the thickness direction of the piezoelectric plate 30. The front surface 35a of the base 35 is inclined with respect to the thickness direction of the piezoelectric plate 30 in the non-residue region 52.

The invention provides a vibration actuator capable of obtaining a large vibration amplitude of a transparent plate. And a vibration actuator (40A) that imparts vibration to a transparent plate (3) that covers the opening of the housing (7A) and has piezoelectric vibrators (4) that generate telescopic vibration, the piezoelectric vibrators (4) are arranged so as to be dispersed along the edge portion of the transparent plate (3), one end (41) of each piezoelectric vibrator (4) in the telescopic direction is a fixed end, the end surface of each piezoelectric vibrator (4) is fixed to the transparent plate (3), and the other end (42) of each piezoelectric vibrator (4) in the telescopic direction is a free end.

The inspection terminals for testing the characteristics of the piezoelectric vibration device are exposed on the side end face of the molded resin at the boundary between the insulating substrate and the molded resin, allowing for easy inspection of the piezoelectric vibrator without causing a short circuit at the inspection terminals. [Solution] The piezoelectric vibrator-side conductor plates 8a and 8b are positioned so as not to overlap with the external connection terminals on the lower surface of the insulating substrate 2. The piezoelectric vibrator-side conductor plates 8a and 8b are connected to the piezoelectric vibrator 3 via a group of wiring patterns on the upper surface 2a of the insulating substrate 2. The side end faces of the piezoelectric vibrator-side conductor plates 8a and 8b are exposed to the outside from the boundary between the insulating substrate 2 and the molded resin 5. This allows the characteristics of the piezoelectric vibrator 3 to be tested using the exposed piezoelectric vibrator-side conductor plates 8a and 8b.

The application discloses a kind of intelligent rings, it is related to the field of smart wear technology, wherein, intelligent ring includes ring shell, main control component and piezoelectric vibration component, piezoelectric vibration component includes substrate, piezoelectric ceramic sheet and vibrator, substrate includes the fixed area and vibration area connected, fixed area is used to connect with ring shell, piezoelectric ceramic sheet and vibrator are installed in vibration area, piezoelectric ceramic sheet is used to drive vibrator vibration to knock ring shell;Main control component is installed in ring shell, and is electrically connected with piezoelectric vibration component.The technical scheme provided by the application realizes the vibration feedback of intelligent ring simultaneously, and is conducive to the miniaturization of intelligent ring.

The invention discloses an evaporator frost prevention device and method, refrigeration equipment, electronic equipment and a storage medium. The device comprises an evaporator support and fins, the evaporator support comprises an upper protective plate, an evaporator right side plate, a bottom plate and an evaporator left side plate which are sequentially connected, and the fins are arranged at the bottom of the evaporator support; a piezoelectric vibration piece is arranged in an evaporator support, vibration of the piezoelectric vibration piece is transmitted to a fin through the evaporator support, the outer surface of the fin is provided with a nanometer micro-protrusion array, the outer surface of the fin is coated with an electrochromic layer, and the fin is connected with an electric field pulse generating device. And the electric field pulse generating device generates an electric pulse signal to control the nano micro-bulge array to generate local eddy current, so that the electrochromic layer forms a continuous water film, and frosting of the evaporator is inhibited. Through linkage of the nanometer micro-bulge array structure, the electric field pulse, the piezoelectric vibration, the electrochromic layer and the frequency converter, a frosting physical process is blocked in a short time, and the frost prevention efficiency is remarkably improved.

The present invention provides a piezoelectric vibrator, the frequency precision of which is adjustable after encapsulation.　A piezoelectric vibrator (1) comprises: a piezoelectric vibration element (10) having a vibrating part (110) and excitation electrodes (14a, 14b) respectively provided on upper and lower surfaces of the vibrating part (110); an upper substrate layer (20) provided on the upper-surface side of the piezoelectric vibration element (10); a lower substrate layer (30) provided on the lower-surface side of the piezoelectric vibration element (10); first resin bonding materials (X1, X2) provided between the upper substrate layer (20) and the lower substrate layer (30), and along an outer periphery in a plan view; and a first protective film (F1) having light-shielding properties against irradiating light (R) of a prescribed wavelength for cleaning the excitation electrodes (14a, 14b), said film being provided on the upper substrate layer (20) and / or the lower substrate layer (30) in an area overlapping the first resin bonding materials (X1, X2) in a plan view.

The application discloses an evaporator anti-frost device and method, and refrigeration equipment, electronic equipment and storage medium. The device comprises an evaporator support and a fin. The evaporator support is sequentially connected with an upper guard plate, an evaporator right side plate, a bottom plate and an evaporator left side plate. The fin is arranged at the bottom of the evaporator support. A piezoelectric vibration plate is arranged in the evaporator support. The piezoelectric vibration plate vibrates and transmits to the fin through the evaporator support. The outer surface of the fin is provided with a nano micro-protrusion array. The outer surface of the fin is coated with an electrochromic layer. The fin is connected with an electric field pulse generating device. The electric field pulse generating device generates an electric pulse signal to control the nano micro-protrusion array to generate a local eddy current, and makes the electrochromic layer form a continuous water film to inhibit the evaporator from frosting. The application realizes the blocking of the frosting physical process in a short time through the nano micro-protrusion array structure, electric field pulse, piezoelectric vibration, electrochromic layer and frequency converter linkage, and significantly improves the anti-frost efficiency.

To ensure mounting accuracy of piezoelectric vibrators while accommodating the miniaturization and low-profile design of electronic devices. [Solution] The device comprises a rectangular base made of quartz or glass in plan view, two mounting pads positioned on the upper surface of the base which transmit electrical signals to a piezoelectric vibrator and mount the piezoelectric vibrator, and a measuring pad positioned around the two mounting pads which reflects laser light.

The present invention provides a piezoelectric vibrating piece having an electrode structure that is superior to conventional designs in reducing foreign matter adhesion. [Solution] The excitation electrode 13 as an electrode structure comprises a base film 13a and a main electrode film 13b formed on the base film, and further comprises a surface film 13c on the main electrode film, which is made of a material with a smaller diffusion coefficient than the main electrode film and reduces the mutual diffusion between the main electrode film and metallic foreign matter. The main electrode film is a thin film of gold or silver, and the surface film is selected from a thin film of tungsten, a thin film of tantalum, or a thin film of molybdenum.

The invention provides a piezoelectric vibration device and a preparation method thereof, and belongs to the technical field of piezoelectric crystal devices.The piezoelectric vibration device comprises a cover plate, a bottom plate and a functional layer, and the functional layer is located between the cover plate and the bottom plate; on the bonding surface of the functional layer and the cover plate, the bonding ring of the functional layer is bonded with the bonding ring of the cover plate, and on the bonding surface of the functional layer and the bottom plate, the bonding ring of the functional layer is bonded with the bonding ring of the bottom plate; the widths, perpendicular to the extension direction of the bonding rings, of the two bonding rings corresponding to at least one bonding face are different. Through the design of the width difference of the bonding ring, the problems that in the prior art, system-level packaging cannot be achieved, and the stability of the piezoelectric vibration device is affected by pollution and mechanical stress are solved, wafer-level packaging of the piezoelectric vibration device is achieved, and meanwhile the sealing performance of packaging of the piezoelectric vibration device is improved.

The invention provides a vibration actuator capable of obtaining a large vibration amplitude of a transparent plate. And a vibration actuator (40A) that imparts vibration to a transparent plate (3) that covers the opening of the housing (7), the vibration actuator (40A) having piezoelectric vibrators (4) that generate telescopic vibration, and a rubber plate (8A) that is fixed to the edge of the transparent plate (3), the piezoelectric vibrators (4) being arranged so as to be scattered along the edge of the transparent plate (3), and the rubber plate (8A) being fixed to the edge of the transparent plate (3). The end surface of one end (41) of the piezoelectric vibrator (4) in the direction of expansion and contraction is fixed to the transparent plate (3) via a rubber plate (8A), and the end surface of the other end (42) of the piezoelectric vibrator (4) in the direction of expansion and contraction is fixed to the surface of the frame part (7) facing the transparent plate (3).

A piezoelectric pump and an electronic device are provided. The piezoelectric pump is mounted on the electronic device, and includes a housing, an inlet structure, and an outlet structure, and a piezoelectric vibration mechanism. The housing includes first openings and second openings. The inlet structure is disposed on the inner surface of the housing, and includes an inlet body having inlet holes positioned correspondingly to the first openings; and first films connected to the inlet body, and in the inlet holes. The outlet structure is disposed on the outer surface of the housing, and includes outlet body having outlet holes positioned correspondingly to the second openings; and second films connected to the outlet body, and in the outlet holes. The piezoelectric vibration mechanism is in the housing.

To provide a piezoelectric vibration piece capable of suppressing occurrence of a failure caused by discharge between electrodes, and a piezoelectric vibrator using the same.SOLUTION: The crystal vibration piece 2 includes a crystal piece 6 having a pair of main surfaces 61, an excitation electrode 7 provided on the main surface 61, and an extraction electrode 8 extracted from the excitation electrode 7. The main surface 61 includes a first main-surface 61a portion and a second main-surface 61a portion facing the first main-surface 61b portion, the excitation electrodes 7 include a first excitation-electrode 61a portion provided on the first main-surface 7a portion and a second excitation-electrode 61b portion provided on the second main-surface 7b portion, and the lead-out electrodes 8 include a first lead-out electrodes 7a portion led out from the first excitation-electrode 8a portion and a second lead-out electrodes portion led out from the second excitation-electrode portion. 7b 8b. The crystal piece 6 includes a creepage distance expansion portion 62 that is a portion for expanding the creepage distance between the first excitation electrodes 7a and the second lead-out electrodes 8b and / or the creepage distance between the second excitation electrodes 7b and the first lead-out electrodes 8a.SELECTED DRAWING: Figure 1A

The present invention provides a piezoelectric vibrator and an oscillator having the piezoelectric vibrator. The piezoelectric vibrator (100) includes a base member (30), a cover member (40), and a laminated structure (101) disposed between the base member (30) and the cover member (40). The laminated structure (101) includes a piezoelectric vibrating element (10), a semiconductor layer (21), and a pair of measuring electrodes (24c, 24d). The piezoelectric vibrating element (10) includes: a piezoelectric body layer (11) having a pair of opposing main surfaces and electrodes respectively disposed on the piezoelectric body layer (11). 1) A pair of main surfaces are arranged to form a pair of excitation electrodes (14a, 14b) facing each other across a piezoelectric layer (11). A semiconductor layer (21) is stacked on either main surface of the piezoelectric layer (11) of the piezoelectric vibrating element (10). A pair of measuring electrodes (24c, 24d) are disposed on the semiconductor layer (21). The pair of measuring electrodes (24c, 24d) are configured to measure a signal based on the temperature of the piezoelectric vibrating element (10) via the semiconductor layer (21).

This article is a piezoelectric vibrator used in piezoelectric vibration devices incorporated into reference signal oscillation circuits and the like in electronic devices.

Device for generating frequency-controlled underwater acoustic pressure waves to attract catfish (Silurus glanis), comprising: a waterproof sound generator housing with a planar, vibrating membrane plate; an electromechanical vibration-generating element arranged inside the housing, preferably designed as an electrodynamic linear actuator; an electronic unit with voltage conversion and power amplification circuitry; and a mounting device for detachably positioning the sound generator housing in the water; wherein the electronic unit is designed such that the frequency, pulse rate, pulse duration, and pause time are variably parameterizable and the generated pressure pulses cover a frequency spectrum optimized for the attraction behavior of catfish.

An electronic pen includes a tubular casing; a vibration transmitting member disposed within a hollow portion of the tubular casing and capable of transmitting vibration occurring in the vibration transmitting member to the tubular casing; a vibrator disposed on the vibration transmitting member; a pulse generator configured to generate a pulse signal which drives the vibrator; and a power supply circuit to power the pulse generator. The vibrator includes a plurality of electrode pins planted on the vibration transmitting member, and one or more wires formed of a shape memory alloy and extending between two electrode pins among the plurality of electrode pins. The one or more wires when supplied with the pulse signal from the pulse generator through the electrode pins expand and contract to thereby vibrate. Vibration of the one or mor wires is transmitted to the tubular casing via the electrode pins and the vibration transmitting member.

This invention facilitates the adjustment of the F0 (original frequency) of the completed piezoelectric vibration device, thereby providing a piezoelectric vibration device with excellent operational reliability. [Solution] First and second metal films 8 and 9 are formed on the upper surface 2a and lower surface 2b of the substrate 2, respectively. The device is designed so that the original frequency of the piezoelectric vibration device 1 is slightly lower than the target frequency. When the resonant frequency of the piezoelectric vibration device 1 deviates from the target frequency after mounting on the substrate 2, there is a frequency deviation. One of the connecting parts 9b that connects the multiple main parts 9a of the second metal film 9 forming the capacitance part C is cut off together with the base film 7 to divide the second metal film 9. The area of ​​the second electrode film 9 connected to the input side of the piezoelectric vibrator 3 is reduced to decrease the capacitance of the capacitance part C, and the original frequency of the piezoelectric vibration device 1 is adjusted to match the target frequency.

A piezoelectric vibration element that includes a piezoelectric piece having a first principal surface and a second principal surface; a via electrode penetrating the piezoelectric piece from the first principal surface to the second principal surface thereof; a conductive etch stop film covering the via electrode on the second principal surface; and a wiring electrode covering at least part of an outer edge of the conductive etch stop film on the second principal surface.

The utility model relates to an electro-vibration test device of a gradient porous dielectric medium. The electro-vibration test device comprises a bottom plate and a sliding plate which are sequentially arranged at the two opposite ends of a movable support. And a to-be-tested dielectric accommodating cavity is arranged between the top surface of the bottom plate and the bottom surface of the sliding plate. A distance measuring sensor and a pressure sensor are arranged above the sliding plate, the distance measuring sensor is used for detecting the distance between the sliding plate and the distance measuring sensor, the pressure sensor is provided with a pressure sensing surface, and the pressure sensing surface faces the sliding plate. According to the invention, the detection target is switched by adjusting the length of the movable support. When the electrostriction distance is detected, the movable support is lengthened, the dielectric body to be detected is fixed in the dielectric body containing cavity to be detected, and the distance of the sliding plate is detected through the distance measuring sensor. When the electrostrictive pressure is detected, the movable support is shortened, so that the pressure sensor abuts against the sliding plate, and then the pressure value output by the dielectric body is detected through the pressure sensor.

In this piezoelectric vibration device, a sufficient bonding region is ensured between a package and a substrate on which a piezoelectric vibration element is mounted, thereby making it possible to suppress displacement of a free end of the piezoelectric vibration element due to external impacts.　Piezoelectric vibration element connection terminals 21, 22 are formed and disposed in parallel along a short side on a fixed end side, which is one side of a rectangular substrate 2, on the outer bottom surface 2a of the substrate 2. When an IC 5 and a piezoelectric vibration element Pv mounted on the substrate 2 are disposed at prescribed positions in a package 6 and are conductively bonded to each other, a conductive adhesive 65 is provided such that an edge portion of the conductive adhesive 65 on a free end (opposite side to the fixed end) of the substrate 2 extends to a region near a virtual straight line L1 connecting the centers of the long sides, of the substrate 2, that face each other on the outer bottom surface in a plan view.