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公开(公告)号：US11910720B2
公开(公告)日：2024-02-20
申请号：US17135257
申请日：2020-12-28
发明人： Eiji Osawa , Hikaru Iwai
IPC分类号： H01L41/04 , H01L41/053 , H10N30/87 , B41J2/14 , H10N30/02 , H10N30/88 , H10N30/80 , H10N30/20
CPC分类号： H10N30/875 , B41J2/14201 , H10N30/02 , H10N30/2047 , H10N30/802 , H10N30/88
摘要： Provided is a piezoelectric device and an MEMS device whose size can be reduced. The piezoelectric device includes: a first substrate that includes a first surface on which a piezoelectric element and a first electrode coupled to the piezoelectric element are disposed; a second substrate that includes a second surface on which a second electrode configured to be coupled to a control circuit is disposed; and a third substrate that is disposed between the first substrate and the second substrate, and includes a third surface bonded to the first surface and a fourth surface facing the second surface, in which the third substrate has a through hole passing through from the third surface to the fourth surface, and a third electrode provided in the through hole and coupled to the first electrode, and the second electrode is coupled to the third electrode and is electrically coupled to the first electrode via the third electrode.
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公开(公告)号：US20240049603A1
公开(公告)日：2024-02-08
申请号：US17879066
申请日：2022-08-02
CPC分类号： H01L41/042 , H02N2/06 , H02M3/158
摘要： A differential piezoelectric actuator-system includes an inductor and driver-circuit having switches for transferring energy between first and second actuators and the inductor, and between a voltage-supply node and the inductor. Control circuitry determines whether a next phase in which to operate the driver-circuit is a first charging-phase or a first recovery-phase. The first charging-phase includes operating the switches in: a first sub-phase to transfer energy from the first actuator to the inductor; a second sub-phase to transfer energy from the voltage supply node to the inductor; and a third sub-phase to transfer energy from the inductor to the second actuator. The first recovery-phase includes operating the switches in: a first sub-phase to transfer energy from the first actuator to the inductor; a second sub-phase to transfer energy from the inductor to the second actuator; and a third sub-phase to transfer energy from the inductor to the voltage supply node.
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公开(公告)号：US20230134707A1
公开(公告)日：2023-05-04
申请号：US17512941
申请日：2021-10-28
IPC分类号： H01L41/113 , H02N1/00 , H01L41/04
摘要： Electronic circuit assemblies are provided, with an electronic circuit assembly including a transducer circuit to generate electrical energy based on applied pressure, and a static-electricity capture circuit to capture electrical energy from static-electrical charge. Further, the electronic circuit assembly includes a power management circuit electrically coupled to the transducer circuit and the static-electricity capture circuit to receive, at least in part, the generated electrical energy based on applied pressure at the transducer circuit and the electrical energy from static-electrical charge captured by the static-electricity capture circuit.
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公开(公告)号：US11619729B2
公开(公告)日：2023-04-04
申请号：US16178472
申请日：2018-11-01
发明人： Yong-Cheol Hyeon
摘要： Provided is an ultrasound apparatus including: a transmitter configured to generate and output a transmission signal; an ultrasound probe configured to convert the transmission signal output from the transmitter into an ultrasound signal and transmit the ultrasound signal to a target object, and receive an echo signal reflected from the target object and output a reception signal on the basis of the echo-signal; a transmission/reception switch configured to attenuate the transmission signal output from the transmitter and output the attenuated transmission signal, and output the reception signal output from the ultrasound probe; and a receiver configured to receive the attenuated and output transmission signal and the output reception signal, and detect transmission waveform information on the basis of the attenuated transmission signal.
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公开(公告)号：US11619555B2
公开(公告)日：2023-04-04
申请号：US16593015
申请日：2019-10-04
发明人： Shiori Nagamori
IPC分类号： G01L1/16 , H01L41/04 , H01L41/047 , H01L41/053 , H01L41/113 , H01L41/193
摘要： A pressure detection sensor having a piezoelectric film with a first region and a second region located outside the first region, the piezoelectric film being deformable by a pressing operation, a first electrode pair disposed on a first main surface and a second main surface in the first region of the piezoelectric film, and a second electrode pair formed on a first main surface and a second main surface in the second region of the piezoelectric film. When the piezoelectric film receives a pressing operation, the first electrode pair outputs a voltage having a polarity different from that of the second electrode pair.
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公开(公告)号：US11611033B2
公开(公告)日：2023-03-21
申请号：US16115889
申请日：2018-08-29
申请人： NORDSON CORPORATION
发明人： Scott A. Conner , John D. Jones , Bryan Teece , Wilson Villegas
摘要： A system and method for jetting a viscous material includes an electronic controller and a jetting dispenser operatively coupled with the electronic controller. The jetting dispenser includes an outlet orifice and a piezoelectric actuator operatively coupled with a movable shaft. The jetting dispenser is under control of the electronic controller for causing said piezoelectric actuator to move the shaft and jet an amount of the viscous material from the outlet orifice. The electronic controller sends a waveform to the piezoelectric actuator to optimize control of the jetting operation.
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公开(公告)号：US11607681B2
公开(公告)日：2023-03-21
申请号：US16441061
申请日：2019-06-14
发明人： Sami Alt , Janne Leinonen
摘要： According to an example aspect of the present invention, there is provided a liquid handling device comprising: means for harvesting energy; energy storage arranged for storing the harvested energy in the liquid handling device; and an electronic component connected to the energy storage and configured to use the energy storage as a power source.
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公开(公告)号：US11594668B2
公开(公告)日：2023-02-28
申请号：US16719009
申请日：2019-12-18
申请人： TDK Corporation
发明人： Kenta Ishii , Masaru Nanao , Hitoshi Sakuma , Takao Noguchi
IPC分类号： H01L41/04 , H01L41/047 , H01L41/08 , C23C16/48 , C23C16/06 , C23C14/08 , C23C14/34 , C23C16/40 , H01L41/187
摘要： A thin film laminate comprises a metal layer consisting of a metal, and a thin film laminated on the surface of the metal layer, wherein a first direction is defined as one direction parallel to the surface of the metal layer, and a second direction is defined as one direction parallel to the surface of the metal layer and crossing the first direction; and the metal layer contains a plurality of first metal grains consisting of the metal and extending in the first direction on the surface of the metal layer, and a plurality of second metal grains consisting of the metal and extending in the second direction on the surface of the metal layer.
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公开(公告)号：US11592543B2
公开(公告)日：2023-02-28
申请号：US17831082
申请日：2022-06-02
IPC分类号： G01S7/52 , B06B1/06 , H01L41/04 , H01L41/08 , H01L41/187 , H01L41/29 , H01L41/338 , H01L41/257 , A61B8/14 , A61B8/00 , B06B1/02
摘要： An ultrasound system, probe and method are provided. The ultrasound system includes a transducer with piezoelectric transducer elements polarized in a poling direction. A bipolar transmit circuit is configured to generate a transmit signal having first and second polarity segments. The first and second polarity segments have corresponding first and second peak amplitudes. A bias generator is configured to generate a bias signal in a direction of the poling direction. The bias signal is combined with the transmit signal to form a biased transmit signal that is shifted in the direction of the poling direction and still includes both of positive and negative voltages over a transmit cycle.
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公开(公告)号：US11592017B2
公开(公告)日：2023-02-28
申请号：US17376553
申请日：2021-07-15
发明人： Kenjiro Okaguchi
摘要： A piezoelectric element drive circuit includes a piezoelectric element driven at a predetermined frequency and having a resonant frequency of (2n+1) times the predetermined frequency (n is a predetermined natural number), and a drive voltage generator that has a first output terminal connected to a first terminal of the piezoelectric element and a second output terminal connected to a second terminal of the piezoelectric element. When the piezoelectric element is driven, a waveform of potential difference between the first output terminal and the second output terminal is a step wave which transitions while taking an intermediate potential. A time length for which the potential difference is the intermediate potential is around (t2−t1)/(2n+1) in a period of time from time t1 at which the potential difference falls to the intermediate potential to time t2 at which the potential difference falls to the intermediate potential subsequently.
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