公开(公告)号：US20240315137A1

公开(公告)日：2024-09-19

申请号：US18673674

申请日：2024-05-24

Applicant: FUJIFILM SonoSite, Inc.

Inventor： Marc Lukacs ,  Nicholas Christopher Chaggares ,  Desmond Hirson ,  Guofeng Pang

IPC: H10N30/50 ,  B06B1/06 ,  H04R31/00 ,  H10N30/00 ,  H10N30/072

CPC classification number: H10N30/50 ,  B06B1/0622 ,  H04R31/00 ,  H10N30/00 ,  H10N30/072

Abstract: The disclosed technology features methods for the manufacture of electrical components such as ultrasound transducers. In particular, the disclosed technology provides methods of patterning electrodes, e.g. in the connection of an ultrasound transducer to an electrical circuit; methods of depositing metal on surfaces; and methods of making integrated matching layers for an ultrasound transducer. The disclosed technology also features ultrasound transducers produced by the methods described herein.

公开(公告)号：US12096695B2

公开(公告)日：2024-09-17

申请号：US17213573

申请日：2021-03-26

Applicant: TDK CORPORATION

Inventor： Yuiko Hirose ,  Hiroki Katoh ,  Yumi Akiyama

IPC: H10N30/50 ,  H10N30/045 ,  H10N30/053 ,  H10N30/20 ,  H10N30/40 ,  H10N30/853 ,  H10N30/87

CPC classification number: H10N30/50 ,  H10N30/045 ,  H10N30/053 ,  H10N30/20 ,  H10N30/40 ,  H10N30/8542 ,  H10N30/8554 ,  H10N30/871 ,  H10N30/877

Abstract: Provided is a piezoelectric element according to the invention including a stacked body in which a piezoelectric layer and an internal electrode layer are stacked. In addition, the internal electrode layer contains at least one kind of element selected from palladium, nickel, platinum, gold, and silver, and copper, and the content of copper contained in the internal electrode layer is 1 to 50 at % in terms of a copper element.

公开(公告)号：US12052924B2

公开(公告)日：2024-07-30

申请号：US16723363

申请日：2019-12-20

Applicant: Frore Systems Inc.

Inventor： Suryaprakash Ganti ,  Leonard Eugene Fennell ,  Ming Tung ,  Brian James Gally

IPC: H10N30/50 ,  H10N30/067 ,  H10N30/20 ,  H10N30/85 ,  H10N30/87 ,  H04L41/083

CPC classification number: H10N30/50 ,  H10N30/067 ,  H10N30/206 ,  H10N30/85 ,  H10N30/871

Abstract: A method for providing a piezoelectric device is described. The method includes providing a first electrode layer on a substrate and coating at least one layer of piezoelectric material. The coating using at least one of slot-die coating, dip coating, aerosol coating and R2R coating such that a layer of the at least one layer of piezoelectric material has a variation in thickness of not more than ten percent. The layer(s) of piezoelectric materials are also heat treated. Multiple layers of piezoelectric material may be slot-die coated and heat treated to provide a multilayer having the desired thickness. A second electrode layer is provided on the layer(s) of piezoelectric material.

公开(公告)号：US12009795B2

公开(公告)日：2024-06-11

申请号：US17119904

申请日：2020-12-11

Applicant: Skyworks Solutions, Inc.

Inventor： Benjamin Paul Abbott ,  Rei Goto

IPC: H03H3/08 ,  H03H3/04 ,  H10N30/40 ,  H10N30/50

CPC classification number: H03H3/08 ,  H10N30/40 ,  H03H2003/0435 ,  H10N30/50

Abstract: A surface acoustic wave device is disclosed. The surface acoustic wave device can include a single crystal support layer, an intermediate single crystal layer positioned over the single crystal support layer, a lithium based piezoelectric layer positioned over the intermediate single crystal layer, and an interdigital transducer electrode positioned over the lithium based piezoelectric layer, the surface acoustic wave device configured to generate a surface acoustic wave. The single crystal layer can be a quartz layer, such as a z-propagation quartz layer. A thermal conductivity of the single crystal support layer is greater than a thermal conductivity of the intermediate single crystal layer, and the thermal conductivity of the single crystal support layer is greater than a thermal conductivity of the lithium based piezoelectric layer.

公开(公告)号：US11997930B2

公开(公告)日：2024-05-28

申请号：US17181732

申请日：2021-02-22

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Keiichi Hatano ,  Koichi Tsukagoshi

IPC: H10N30/853 ,  H10N30/053 ,  H10N30/097 ,  H10N30/50 ,  H10N30/87

CPC classification number: H10N30/8536 ,  H10N30/053 ,  H10N30/097 ,  H10N30/50 ,  H10N30/878

Abstract: Form internal electrodes with a metal whose silver content is 80 percent by mass or higher, and also constitute piezoelectric ceramic layers with a piezoelectric ceramic whose primary component is an alkaline niobate having a perovskite structure and which contains at least one type of alkaline earth metal selected from calcium and barium, as well as silver, wherein the total content of the alkaline earth metal is 0.2 percent by mol or higher but lower than 2.0 percent by mol when the element content in the B sites of the alkaline niobate represents 100 percent by mol, and wherein the piezoelectric ceramic layers each contain at least one sintered grain 41 that has silver-segregated regions 42 inside and the silver-segregated regions 42 have a long diameter of 10 nm or smaller.

公开(公告)号：US11990851B2

公开(公告)日：2024-05-21

申请号：US17216375

申请日：2021-03-29

Applicant: Morgan State University

Inventor： Birol Ozturk ,  Peker Milas

IPC: H10N30/077 ,  H02N2/00 ,  H02N2/18 ,  H10N30/057 ,  H10N30/098 ,  H10N30/30 ,  H10N30/50 ,  H10N30/857 ,  H10N30/87

CPC classification number: H02N2/22 ,  H02N2/18 ,  H10N30/057 ,  H10N30/077 ,  H10N30/098 ,  H10N30/30 ,  H10N30/50 ,  H10N30/857 ,  H10N30/877 ,  H10N30/878 ,  Y10T29/42

Abstract: A method for manufacturing a piezoelectric element for generating electricity upon flexing of the element including the steps spin-coating a first substrate layer onto a support substrate; depositing a first electrode film onto the first substrate layer; spin coating polyvinylidene fluoride (PVDF) containing solution on the first electrode film to result in a PVDF film; annealing the PVDF film; depositing a second electrode film onto the PVDF film; spin-coating a second substrate layer on top of the second electrode film; forming a hole through the first and second substrate layers; filling the hole with silver paste to contact to the first and second electrode layers; peeling a resulting substrate/electrode/PVDF/electrode/substrate device from the support substrate; and placing a drop of silver paste in the hole formed in the first substrate layer.

公开(公告)号：US20240114797A1

公开(公告)日：2024-04-04

申请号：US18454073

申请日：2023-08-23

Applicant: FUJIFILM CORPORATION

Inventor： Hiroyuki KOBAYASHI ,  Seigo NAKAMURA ,  Shinya SUGIMOTO ,  Tsutomu SASAKI

IPC: H10N30/50 ,  H10N30/20 ,  H10N30/80 ,  H10N30/853

CPC classification number: H10N30/50 ,  H10N30/206 ,  H10N30/802 ,  H10N30/8554

Abstract: A piezoelectric element includes a substrate, a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode, in which both the first piezoelectric film and the second piezoelectric film have spontaneous polarizations aligned in a film thickness direction and directions of the spontaneous polarizations are the same, and in a case where in a hysteresis curve of one piezoelectric film, a coercive voltage Vcf+, a coercive voltage Vcf−, |Vcf+−Vcf−|=ΔVcf, and the larger of an absolute value of Vcf+ and an absolute value of Vcf− is denoted by Vcf, and in a hysteresis curve of the other piezoelectric film, a coercive voltage Vcr+, a coercive voltage Vcr−, |Vcr+−Vcr−|=ΔVcr, and the larger of an absolute value of Vcr+ and an absolute value Vcr− is denoted by Vcr, ΔVcr

公开(公告)号：US20240114796A1

公开(公告)日：2024-04-04

申请号：US18454072

申请日：2023-08-23

Applicant: FUJIFILM CORPORATION

Inventor： Seigo NAKAMURA ,  Hiroyuki KOBAYASHI ,  Shinya SUGIMOTO ,  Tsutomu SASAKI

IPC: H10N30/50 ,  H10N30/20 ,  H10N30/80 ,  H10N30/853

CPC classification number: H10N30/50 ,  H10N30/206 ,  H10N30/802 ,  H10N30/8554

Abstract: A piezoelectric element includes a substrate; and a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode which are provided on the substrate in this order, in which both the first piezoelectric film and the second piezoelectric film contain a perovskite-type oxide containing Pb Zr, Ti, and M, as a main component, Pb composition ratios in the perovskite-type oxides contained in the first piezoelectric film and the second piezoelectric film are different from each other, and polarization-electric field hysteresis measured for the first piezoelectric film with the first electrode grounded and the second electrode as a drive electrode, and polarization-electric field hysteresis measured for the second piezoelectric film with the second electrode grounded and the third electrode as a drive electrode are shifted in the same electric field direction with respect to origins thereof.

公开(公告)号：US20240065107A1

公开(公告)日：2024-02-22

申请号：US18271817

申请日：2022-09-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yoshinobu HIROSE ,  Kentaro ICHIHASHI ,  Takashi KASASHIMA ,  Masato YAMAZAKI

IPC: H10N30/853 ,  H10N30/87 ,  H10N30/50 ,  H10N30/097 ,  H10N30/08 ,  H10N30/067

CPC classification number: H10N30/8542 ,  H10N30/871 ,  H10N30/50 ,  H10N30/097 ,  H10N30/08 ,  H10N30/067

Abstract: A piezoelectric element having a piezoelectric body and an electrode in contact with the piezoelectric body: the piezoelectric body being formed of a lead-free piezoelectric ceramic composition which includes a primary phase formed of an alkali niobate-based perovskite oxide represented by a compositional formula (A1aM1b)c(Nbd1Mnd2Tid3Zrd4Hfd5)O3+e (wherein element A1 represents at least one species among the alkali metals; element M1 represents at least one species among Ba, Ca, and Sr; the following conditions: 0

公开(公告)号：US11910717B2

公开(公告)日：2024-02-20

申请号：US17177645

申请日：2021-02-17

Applicant: Brother Kogyo Kabushiki Kaisha

Inventor： Keiji Kura ,  Takashi Aiba

IPC: H01L41/047 ,  H10N30/50 ,  H10N30/87 ,  H10N30/20

CPC classification number: H10N30/50 ,  H10N30/2047 ,  H10N30/874

Abstract: A piezoelectric actuator includes an electrode layer including a trunk portion and a plurality of branch portions branched from the trunk portion. The trunk portion includes a plurality of junction points from each of which a corresponding branch portion of the plurality of branch portions are branched, an end spaced from the plurality of junction points, and a second through hole positioned between the plurality of junction points and the end of the trunk portion. A plurality of first through holes are grouped into a first group and a second group. The first group overlaps, in a first direction, a particular area defined between the end of the trunk portion and the second through hole and the second group overlaps, in the first direction, another particular area defined between the second through hole and the plurality of junction points.