公开(公告)号：US20240349614A1

公开(公告)日：2024-10-17

申请号：US18683185

申请日：2022-09-08

申请人： Nisshinbo Holdings Inc. ,  Nisshinbo Micro Devices Inc.

发明人： Naoki MASUMOTO ,  Hiroyuki KUCHIJI ,  Toshikatsu KIKUCHI

IPC分类号： H10N30/87 ,  H10N30/20

CPC分类号： H10N30/87 ,  H10N30/2042 ,  H10N30/2047 ,  H10N30/708

摘要： A piezoelectric device including: a substrate having a cavity; a piezoelectric film covering the cavity and laminated and supported on the substrate; and a first electrode and a second electrode being provided to be spaced apart from each other so as to sandwich a part of the piezoelectric film. The first electrode and the second electrode pass through the piezoelectric film in the thickness direction of the piezoelectric film and are disposed above the cavity, an input signal is converted to an output signal based on displacement in a direction of application of a voltage to the piezoelectric film polarized in the direction of application of the voltage by applying the voltage between the first electrode and the second electrode, and a miniature piezoelectric device with high sensitivity is provided that utilizes the longitudinal effect of the piezoelectric effect.

公开(公告)号：US12120483B2

公开(公告)日：2024-10-15

申请号：US17424257

申请日：2020-01-20

申请人： TDK CORPORATION

发明人： Yoshiki Ohta ,  Takuto Horii ,  Yoshikazu Shimura ,  Atsushi Ezawa ,  Miho Bamba ,  Kaoru Kijima ,  Akihiro Takeda

IPC分类号： H01L41/047 ,  H04R1/24 ,  H04R7/04 ,  H04R17/00 ,  H10N30/20 ,  H10N30/50 ,  H10N30/87

CPC分类号： H04R1/24 ,  H04R7/04 ,  H04R17/00 ,  H10N30/2047 ,  H10N30/50 ,  H10N30/874 ,  H10N30/875

摘要： An audio device includes a vibration member, and a first piezoelectric vibrator and a second piezoelectric vibrator that are provided on the vibration member. A natural frequency of the first piezoelectric vibrator is larger than a natural frequency of the second piezoelectric vibrator.

公开(公告)号：US12117605B2

公开(公告)日：2024-10-15

申请号：US17355861

申请日：2021-06-23

申请人： STMicroelectronics S.r.l.

发明人： Domenico Giusti ,  Massimiliano Merli

IPC分类号： G02B26/00 ,  G02B26/04 ,  H10N30/057 ,  H10N30/20 ,  H10N30/50 ,  H10N30/88

CPC分类号： G02B26/04 ,  H10N30/057 ,  H10N30/2047 ,  H10N30/506 ,  H10N30/88

摘要： A MEMS actuator includes a main body having a central portion, couplable to a substrate, and a peripheral portion suspended over the substrate when the central portion is coupled to the substrate. The peripheral portion has a deformable structure extending around the central portion, and forming successively arranged membranes. The MEMS actuator includes bearing structures and corresponding piezoelectric actuators. The bearing structures are fixed at their top to the deformable structure and laterally delimit corresponding cavities, each having a lateral opening facing the central portion of the main body and closed at the top by a membrane. A fixed part of the membrane is fixed to the underlying bearing structure and a suspended part is laterally offset with respect to the underlying bearing structure. The piezoelectric actuators are controllable to cause deformation of the corresponding membrane and rotation of the bearing structures around the central portion of the main body.

公开(公告)号：US20240307035A1

公开(公告)日：2024-09-19

申请号：US18668668

申请日：2024-05-20

申请人： Exo Imaging, Inc.

发明人： Sandeep AKKARAJU ,  Haesung KWON ,  Yusuf HAQUE ,  Janusz BRYZEK

IPC分类号： A61B8/00 ,  A61B8/08 ,  A61B8/14 ,  B06B1/02 ,  B06B1/06 ,  G01S7/52 ,  G01S7/521 ,  G01S15/89 ,  H10N30/20 ,  H10N30/88

CPC分类号： A61B8/4494 ,  A61B8/0883 ,  A61B8/145 ,  A61B8/4483 ,  A61B8/4488 ,  A61B8/461 ,  A61B8/488 ,  A61B8/5207 ,  A61B8/546 ,  B06B1/0215 ,  B06B1/0238 ,  B06B1/0629 ,  B06B1/0662 ,  B06B1/0692 ,  G01S7/52046 ,  G01S7/52079 ,  G01S7/521 ,  G01S15/8925 ,  H10N30/2047 ,  H10N30/2048 ,  H10N30/704 ,  H10N30/88 ,  A61B8/4427 ,  A61B8/4472 ,  B06B2201/76

摘要： An imaging system includes: a transceiver cell for generating a pressure wave and converting an external pressure wave into an electrical signal; and a control unit for controlling an operation of the transceiver cell. The transceiver cell includes: a substrate; at least one membrane suspending from the substrate; and a plurality of transducer elements mounted on the at least one membrane. Each of the plurality of transducer elements has a bottom electrode, a piezoelectric layer on bottom electrode, and at least one top electrode on the piezoelectric layer. Each of the plurality of transducer element generates a bending moment in response to applying an electrical potential across the bottom electrode and the at least one top electrode and develops an electrical charge in response to a bending moment due to the external pressure wave.

公开(公告)号：US20240294011A1

公开(公告)日：2024-09-05

申请号：US18591995

申请日：2024-02-29

申请人： SEIKO EPSON CORPORATION

发明人： Masanori MIKOSHIBA ,  Motoki TAKABE

IPC分类号： B41J2/14 ,  H10N30/20 ,  H10N30/50

CPC分类号： B41J2/14274 ,  H10N30/2047 ,  H10N30/50

摘要： A liquid ejecting head includes: a piezoelectric element including a piezoelectric layer; a pressure compartment substrate in which a pressure compartment is provided; and a diaphragm that applies pressure to liquid in the pressure compartment by vibrating by being driven by the piezoelectric element. The pressure compartment substrate, the diaphragm, and the piezoelectric element are stacked in this order in a stacking direction. A neutral plane of a stacked body made up of the piezoelectric element and the diaphragm is located inside the piezoelectric layer. Of two regions obtained by dividing the piezoelectric layer with respect to the neutral plane, a region located closer to the diaphragm is defined as a lower region, and a region located farther from the diaphragm is defined as an upper region. A piezoelectric constant of the lower region is less than a piezoelectric constant of the upper region.

公开(公告)号：US12064791B2

公开(公告)日：2024-08-20

申请号：US16823033

申请日：2020-03-18

申请人： Apple Inc.

发明人： Stephen P. Zadesky ,  Fletcher R. Rothkopf ,  Stephen B. Lynch ,  Martin Auclair

IPC分类号： B06B1/06 ,  A61B5/00 ,  A61B5/021 ,  A61B5/024 ,  G06F1/16 ,  G06F3/01 ,  G10K9/122 ,  H01L41/09 ,  H10N30/00 ,  H10N30/20

CPC分类号： B06B1/0603 ,  A61B5/02133 ,  A61B5/02438 ,  A61B5/02444 ,  A61B5/7455 ,  B06B1/06 ,  G06F1/163 ,  G06F3/016 ,  G10K9/122 ,  H10N30/00 ,  H10N30/2041 ,  H10N30/2047 ,  H10N30/206 ,  A61B5/7405

摘要： Examples of portable electronic devices including a piezo actuated vibrator for providing tactile feedback to the user are described. Portable electronic devices according to the present disclosure may include tactile feedback devices, which may be driven by a piezoelectric actuator/vibrator that is operatively coupled to or embedded into the housing of a portable electronic device. In some examples, the housing of the electronic device itself can be made of piezoelectric ceramic material. The piezoelectric element may be coupled to the housing of the product to cause the housing to deflect and/or vibrate. In some examples, the housing of the portable electronic device, which may be a portable media player device, may be configured for placement directly or indirectly in contact with the user's skin such that vibrations of the housing may be felt directly (without audible feedback) by the user.

公开(公告)号：US12017456B2

公开(公告)日：2024-06-25

申请号：US17662798

申请日：2022-05-10

申请人： SEIKO EPSON CORPORATION

发明人： Harunobu Koike ,  Tatsuo Sawasaki ,  Masao Nakayama ,  Toshihiro Shimizu ,  Chihiro Nishi

IPC分类号： B41J2/14 ,  B41J2/16 ,  H10N30/20

CPC分类号： B41J2/14274 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1612 ,  H10N30/2047

摘要： The diaphragm includes a first layer containing silicon as a constituent element, a third layer disposed between the first layer and the piezoelectric actuator and containing zirconium as a constituent element, and a second layer disposed between the first layer and the third layer and containing at least one selected from the group consisting of a metal other than iron, silicon, and zirconium, a metalloid, and a semiconductor, as a constituent element, in the second layer and the third layer, a position with a highest concentration of impurities other than the constituent elements of the second layer and the third layer is in the second layer, a position with a highest concentration of zirconium is in the third layer, and a position with a highest concentration of silicon is in the first layer.

公开(公告)号：US20240149584A1

公开(公告)日：2024-05-09

申请号：US18503383

申请日：2023-11-07

申请人： SEIKO EPSON CORPORATION

发明人： Kenichi OE ,  Kazuya TAJIMA ,  Atsushi SOMA

IPC分类号： B41J2/14 ,  H10N30/20 ,  H10N30/80 ,  H10N30/87

CPC分类号： B41J2/14201 ,  H10N30/2047 ,  H10N30/802 ,  H10N30/875

摘要： A head unit to be mounted in a liquid ejecting apparatus includes: a liquid ejecting section; a first flexible substrate that transmits the electrical signal to a joining terminal of the piezoelectric element; and a second flexible substrate that transmits the electrical signal to the first flexible substrate. The second flexible substrate includes: a first region having a stack of the cover member, the conductive member, and the base member; and a second region having a stack of the conductive member and the base member. The second flexible substrate has a surface on which a terminal is disposed within the second region, the terminal being joined to the first flexible substrate with solder.

公开(公告)号：US20240136252A1

公开(公告)日：2024-04-25

申请号：US18207635

申请日：2023-06-07

申请人： Frore Systems Inc.

发明人： Suryaprakash Ganti ,  Seshagiri Rao Madhavapeddy

IPC分类号： H01L23/473 ,  B06B1/06 ,  F04B17/00 ,  F04B39/06 ,  F04B43/04 ,  F04B43/09 ,  F04B45/04 ,  F04B45/047 ,  F04B53/10 ,  F04D33/00 ,  F25B21/02 ,  H01L23/42 ,  H01L23/427 ,  H01L23/433 ,  H01L23/46 ,  H04M1/02 ,  H05K7/20 ,  H10N30/00 ,  H10N30/20 ,  H10N30/80 ,  H10N35/80

CPC分类号： H01L23/4735 ,  B06B1/06 ,  F04B17/003 ,  F04B39/06 ,  F04B43/04 ,  F04B43/046 ,  F04B43/095 ,  F04B45/043 ,  F04B45/047 ,  F04B53/1077 ,  F04D33/00 ,  F25B21/02 ,  H01L23/42 ,  H01L23/427 ,  H01L23/433 ,  H01L23/4336 ,  H01L23/46 ,  H01L23/473 ,  H04M1/0202 ,  H05K7/20 ,  H05K7/20009 ,  H05K7/20272 ,  H05K7/20281 ,  H05K7/2039 ,  H10N30/00 ,  H10N30/20 ,  H10N30/204 ,  H10N30/2047 ,  H10N30/80 ,  H10N35/80 ,  F04B43/08 ,  F25B2321/0212 ,  F25B2321/023 ,  F25B2321/025 ,  F25B2321/0252

摘要： An active cooling system and method for using the active cooling system are described. The active cooling system includes a cooling element having a first side and a second side. The first side of the cooling element is distal to a heat-generating structure and in communication with a fluid. The second side of the cooling element is proximal to the heat-generating structure. The cooling element is configured to direct the fluid using a vibrational motion from the first side of the cooling element to the second side such that the fluid moves in a direction that is incident on a surface of the heat-generating structure at a substantially perpendicular angle and then is deflected to move along the surface of the heat-generating structure to extract heat from the heat-generating structure.

公开(公告)号：US20240032429A1

公开(公告)日：2024-01-25

申请号：US18044493

申请日：2021-09-23

申请人： AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH

发明人： Eldwin Jiaqiang NG ,  Nan WANG ,  Srinivas MERUGU ,  Jaibir SHARMA

IPC分类号： H10N30/20 ,  H10N30/853 ,  H10N30/076

CPC分类号： H10N30/2047 ,  H10N30/853 ,  H10N30/076

摘要： Various embodiments may relate to a piezoelectric device. The piezoelectric device may include a substrate, and a layered stacked arrangement anchored to the substrate. The layered stacked arrangement may include a piezoelectric layer. The stacked arrangement may also include a first electrode on a first side of the piezoelectric layer. The stacked arrangement may further include a second electrode on a second side of the piezoelectric layer opposite the first side. The piezoelectric layer may include a first region including one or more dipole domains of a first type, and one or more dipole domains of a second type. The first electrode may be at least partially in contact with the first region and at least partially in contact with the second region.