公开(公告)号：US20240341196A1

公开(公告)日：2024-10-10

申请号：US18130521

申请日：2023-04-04

申请人： Wisconsin Alumni Research Foundation

发明人： Xudong Wang ,  Jun Li

IPC分类号： H10N30/85 ,  C08J7/04 ,  D01F4/00 ,  H02N2/18 ,  H10N30/092

CPC分类号： H10N30/852 ,  C08J7/0427 ,  D01F4/00 ,  H02N2/186 ,  H10N30/092 ,  C08J2383/04 ,  C08J2477/04 ,  D10B2401/16

摘要： A stretchable piezoelectric thin film, and method of manufacture, an open mesh structure formed by a repeating branching and joining pattern. The thin film is manufactured by slowly lifting amino acid nanofibrils from a water-alcohol biphasic solvent. The film automatically assembles into a truss-like mesh network of amino acid nanofibrils that allows the open meshes to close with narrowed intersection angles between the amino acid nanofibrils. The alcohol molecules of the water-alcohol biphasic solvent preferably bind to the carboxyl groups on the amino acid surfaces thus limiting the growth along the side facets of the amino acid surfaces and promoting growth along the growth front producing a bifurcation in the amino acid biocrystal network.

公开(公告)号：US11998389B2

公开(公告)日：2024-06-04

申请号：US17498793

申请日：2021-10-12

申请人： PHILIPS IMAGE GUIDED THERAPY CORPORATION

发明人： Paul Douglas Corl

IPC分类号： A61B8/00 ,  A61B6/46 ,  A61B8/08 ,  A61B8/12 ,  A61B8/14 ,  B06B1/06 ,  H10N30/092 ,  H10N30/85

CPC分类号： A61B8/4483 ,  A61B6/461 ,  A61B8/0891 ,  A61B8/12 ,  A61B8/14 ,  A61B8/445 ,  B06B1/0622 ,  B06B1/067 ,  H10N30/092 ,  H10N30/852 ,  B06B2201/76 ,  Y10T29/49005

摘要： An ultrasound transducer for use in intravascular ultrasound (IVUS) imaging systems including a single crystal composite (SCC) layer is provided. The transducer has a front electrode on a side of the SCC layer; and a back electrode on the opposite side of the SCC layer. The SCC layer may have a bowl shape including pillars made of a single crystal piezoelectric material embedded in a polymer matrix. Also provided is an ultrasound transducer as above, with the back electrode split into two electrodes electrically isolated from one another. A method of forming an ultrasound transducer as above is also provided. An IVUS imaging system is provided, including an ultrasound emitter and receiver rotationally disposed within an elongate member; an actuator; and a control system controlling emission of pulses and receiving ultrasound echo data associated with the pulses. The ultrasound emitter and receiver include an ultrasound transducer as above.

公开(公告)号：US11910719B2

公开(公告)日：2024-02-20

申请号：US17553804

申请日：2021-12-17

申请人： FUJIFILM Corporation

发明人： Shingo Fujikata

IPC分类号： H04R25/00 ,  H10N30/85 ,  H04R17/00

CPC分类号： H10N30/852 ,  H04R17/00

摘要： Provided is a piezoelectric film capable of realizing a piezoelectric speaker in which a high sound pressure is obtained, a sufficient sound pressure characteristic is obtained in a wide frequency band, and generation of a chattering sound particularly in a low sound can be suppressed. The piezoelectric film is a piezoelectric film including a polymer-based piezoelectric composite material which contains piezoelectric particles in a matrix containing a polymer material, and electrode layers which are laminated on both surfaces of the polymer-based piezoelectric composite material, in which a variation coefficient of a destructive force of a laminate having the polymer-based piezoelectric composite material and the electrode layers in a plane direction is 0.25 or less.

公开(公告)号：US11871672B2

公开(公告)日：2024-01-09

申请号：US16660647

申请日：2019-10-22

申请人： The Regents of the University of California

发明人： Donald J. Sirbuly ,  Shaochen Chen ,  Kanguk Kim ,  Wei Zhu

IPC分类号： H01L41/37 ,  H01L41/33 ,  H01L41/18 ,  H10N30/092 ,  C08L67/07 ,  C08K5/5419 ,  C08K3/22 ,  C08K3/04 ,  H10N30/00 ,  H10N30/08 ,  H10N30/80 ,  H10N30/85 ,  H04R17/00 ,  H10N30/853

CPC分类号： H10N30/092 ,  C08K3/046 ,  C08K3/22 ,  C08K5/5419 ,  C08L67/07 ,  H10N30/00 ,  H10N30/08 ,  H10N30/80 ,  H10N30/852 ,  H04R17/005 ,  H10N30/8536

摘要： Methods, systems, and devices are disclosed for fabricating 3D piezoelectric materials. In one aspect, a method includes photopolymerizing a selected portion of a two dimensional plane in a sample of a photolabile polymer solution containing piezoelectric nanoparticles to form a layer of a piezoelectric material, the photopolymerizing including directing light from a light source based on a pattern design in the selected portion of the photolabile polymer solution; and moving one or both of the sample and the directed light to photopolymerize another selected portion of another two dimensional plane in the sample to form another layer of the piezoelectric material.

公开(公告)号：US20230421964A1

公开(公告)日：2023-12-28

申请号：US18464417

申请日：2023-09-11

申请人： FUJIFILM Corporation

发明人： Yoshinori Tamada

IPC分类号： H04R17/00 ,  H10N30/85 ,  H10N30/88 ,  H10N30/092

CPC分类号： H04R17/00 ,  H10N30/852 ,  H10N30/883 ,  H10N30/092

摘要： An object of the present invention is to provide a piezoelectric film that has satisfactory durability, is capable of outputting a sound with a high sound pressure, decreases the resistance of an electrode layer, and is capable of suppressing heat generation. The above-described object is achieved by providing the piezoelectric film including a piezoelectric layer containing piezoelectric particles in a matrix that contains a polymer material, electrode layers provided on both surfaces of the piezoelectric layer, and an interlayer provided on at least one side between the piezoelectric layer and the electrode layers, in which the interlayer contains carbon and/or a metal, and a metal atom concentration of 30 to 90 atm % or a carbon atom concentration of 85 to 95 atm % is satisfied.

公开(公告)号：US20230341977A1

公开(公告)日：2023-10-26

申请号：US18215791

申请日：2023-06-28

申请人： LG Display Co., Ltd.

发明人： Chi-Wan KIM ,  Tae-Heon KIM ,  Sung-Eui SHIN ,  Yong-Woo LEE ,  Kyung-Yeol RYU ,  Yu-Seon KHO ,  Yong-Gyoon JANG

IPC分类号： H10N30/30 ,  G06F3/044 ,  H10N30/85 ,  H10N30/853 ,  G06F3/041 ,  H10N30/00

CPC分类号： G06F3/044 ,  G06F3/0414 ,  H10N30/10516 ,  H10N30/302 ,  H10N30/852 ,  H10N30/853 ,  G06F2203/04105

摘要： A display device includes a touch panel; a display panel under the touch panel and displaying an image; a piezoelectric element under the touch panel and including an upper electrode, a lower electrode and a piezoelectric layer; and a rectifying circuit connected to the piezoelectric element.

公开(公告)号：US20230302496A1

公开(公告)日：2023-09-28

申请号：US18205291

申请日：2023-06-02

申请人： RESONANT ACOUSTICS INTERNATIONAL INC.

发明人： Nicholas Chris Chaggares ,  Eric M. Rieder ,  Khachic Karshafian

IPC分类号： B06B1/06 ,  G10K11/02 ,  H10N30/85

CPC分类号： B06B1/067 ,  G10K11/02 ,  H10N30/852

摘要： There are provided an ultrasonic transducer and methods for designing and manufacturing the same. The ultrasonic transducer includes a piezoelectric composite layer configured to be in acoustic communication with a sample and having at least partially decoupled acoustic impedance and electrical impedance properties. The piezoelectric composite layer includes an array of spaced-apart piezoelectric regions, each being made from a piezoelectric material, a filler material positioned between adjacent spaced-apart piezoelectric regions, the filler material comprising a polymer matrix and a non-piezoelectric material in contact with the polymer matrix. In some embodiments, the ultrasonic transducer includes an electrically insulating non-piezoelectric composite layer extending over the piezoelectric composite layer for electrically insulating the piezoelectric composite layer from the sample, the electrically insulating non-piezoelectric composite layer being acoustically matched to the piezoelectric composite layer and the sample.

公开(公告)号：US20230287260A1

公开(公告)日：2023-09-14

申请号：US18198110

申请日：2023-05-16

申请人： UIF (University Industry Foundation), Yonsei University

发明人： Cheolmin PARK ,  Seokyeong LEE ,  Joona BANG ,  Jaewan KO ,  Taewoo LEE ,  Sungjin KIM

IPC分类号： C09K11/02 ,  C07F7/24 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00 ,  H10K71/12 ,  H10K77/10 ,  H10K85/30 ,  H10N30/092 ,  H10N30/85

CPC分类号： C09K11/025 ,  C07F7/24 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00 ,  H10K71/12 ,  H10K77/111 ,  H10K85/30 ,  H10N30/092 ,  H10N30/852 ,  B82Y40/00

摘要： There is provided a method of preparing a synchronized piezoelectric and luminescence material. The method includes mixing a solution (a) including light-emitting particles or precursors thereof and a solution (b) including ligands having a piezoelectric property in a polar solvent; and optionally, mixing a solution (c) including ligands having a piezoelectric property in an antisolvent together with the solution (a) and the solution (b), if necessary.

公开(公告)号：US12069429B2

公开(公告)日：2024-08-20

申请号：US17843354

申请日：2022-06-17

申请人： FUJIFILM Corporation

发明人： Shingo Fujikata

IPC分类号： H04R17/00 ,  H10N30/85

CPC分类号： H04R17/005 ,  H10N30/852

摘要： An object of the present invention is to provide a cut sheet-like piezoelectric film which includes electrode layers on both surfaces of a piezoelectric layer and is capable of preventing a short circuit of the electrode layers. The object is achieved by providing a cut sheet-like piezoelectric film including a piezoelectric layer which contains piezoelectric particles in a matrix containing a polymer material, and electrode layers which are provided on both surfaces of the piezoelectric layer, in which a distance between the electrode layers at an end portion in a thickness direction is 40% or greater with respect to a thickness of the piezoelectric layer.

公开(公告)号：US12037528B2

公开(公告)日：2024-07-16

申请号：US18198110

申请日：2023-05-16

申请人： UIF (University Industry Foundation), Yonsei University

发明人： Cheolmin Park ,  Seokyeong Lee ,  Joona Bang ,  Jaewan Ko ,  Taewoo Lee ,  Sungjin Kim

IPC分类号： C09K11/02 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y40/00 ,  C07F7/24 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00 ,  H10K71/12 ,  H10K77/10 ,  H10K85/10 ,  H10K85/30 ,  H10K85/60 ,  H10K102/00 ,  H10N30/092 ,  H10N30/85

CPC分类号： C09K11/025 ,  C07F7/24 ,  C09K11/06 ,  H10K50/115 ,  H10K71/00 ,  H10K71/12 ,  H10K77/111 ,  H10K85/30 ,  H10N30/092 ,  H10N30/852 ,  B82Y15/00 ,  B82Y20/00 ,  B82Y40/00 ,  C09K2211/10 ,  H10K85/111 ,  H10K85/113 ,  H10K85/636 ,  H10K85/6572 ,  H10K2102/311

摘要： There is provided a method of preparing a synchronized piezoelectric and luminescence material. The method includes mixing a solution (a) including light-emitting particles or precursors thereof and a solution (b) including ligands having a piezoelectric property in a polar solvent; and optionally, mixing a solution (c) including ligands having a piezoelectric property in an antisolvent together with the solution (a) and the solution (b), if necessary.