公开(公告)号：US20230081954A1

公开(公告)日：2023-03-16

申请号：US17897502

申请日：2022-08-29

申请人： Korea Electronics Technology Institute

发明人： Intae SEO ,  Hyung Won KANG ,  Seung Ho HAN ,  Myong Jae YOO ,  Hyunseung YANG

IPC分类号： H01L41/187 ,  H01L41/37 ,  H01L41/312 ,  H01L41/047 ,  H01L41/338 ,  H01L41/193

摘要： Disclosed is a method for manufacturing a laminated piezoelectric composite. The method includes wet-mixing ceramic powder, a polymer binder, a plasticizer and a solvent for 4 to 72 hours so as to generate a mixed slurry, introducing the mixed slurry into a tape casting process so as to prepare a plurality of piezoelectric composite sheets, drying and forming the plurality of piezoelectric composite sheets using a roll-to-roll process so as to prepare the plurality of formed piezoelectric composite sheets, forming internal electrodes on the plurality of piezoelectric composite sheets so as to prepare the plurality of piezoelectric composite sheets having the internal electrodes, laminating and pressing the plurality of piezoelectric composite sheets having the internal electrodes so as to generate a piezoelectric composite sheet laminate having the internal electrodes, and cutting the piezoelectric composite sheet laminate having the internal electrodes into a desired shape and size.

公开(公告)号：US11592543B2

公开(公告)日：2023-02-28

申请号：US17831082

申请日：2022-06-02

申请人： GE Precision Healthcare LLC

发明人： Harald Weichenberger ,  Reinhold Brüstle ,  Bruno Hans Haider

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.

公开(公告)号：US11589837B2

公开(公告)日：2023-02-28

申请号：US16653087

申请日：2019-10-15

申请人： OLYMPUS CORPORATION

发明人： Miku Saito

IPC分类号： A61B8/00 ,  A61B8/12 ,  B06B1/06 ,  H01L41/047 ,  H01L41/29 ,  H01L41/338

摘要： A radial type ultrasound transducer is arranged in an ultrasound endoscope including a bending portion on a distal end side of an insertion portion. The ultrasound transducer includes: a plurality of piezoelectric elements arranged at predetermined intervals in a circumferential manner and configured to transmit and receive ultrasound waves; a plurality of electrodes arranged in the respective piezoelectric elements; and a flexible printed circuit electrically connected to each of the electrodes. The flexible printed circuit includes a plurality of wires that extend such that at least parts of the wires cross a direction perpendicular to an arrangement direction of the piezoelectric elements, and the plurality of wires are electrically connected to the respective electrodes of the piezoelectric elements at positions where at least parts of the wires cross the direction perpendicular to the arrangement direction of the piezoelectric elements.

公开(公告)号：US20230006124A1

公开(公告)日：2023-01-05

申请号：US17779613

申请日：2020-11-25

申请人： KYOCERA Corporation

发明人： Koki HONDA ,  Seiichiro NAMIKAWA ,  Shogo NAKAGAWA

IPC分类号： H01L41/047 ,  H01L41/053 ,  H01L41/113 ,  H01L41/338 ,  H01L41/35

摘要： A crystal element includes a vibration part, a holding part, an electrode part, and a recess that corresponds to a recess and/or protrusion. The vibration part has a pair of vibration-part main surfaces. The holding part is formed integrally with the vibration part to be connected to an outer edge of vibration part and has a pair of holding-part main surfaces and holding-part side surfaces. The electrode part is provided at the vibration-part main surfaces. The recess is located at the holding-part side surfaces.

公开(公告)号：US11497470B2

公开(公告)日：2022-11-15

申请号：US16336352

申请日：2017-09-25

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Princeton Saroha ,  Maritess Minas ,  David Kenneth Wrolstad ,  Jeremy Stigall

IPC分类号： A61B8/12 ,  A61B8/00 ,  B06B1/06 ,  H01L41/047 ,  H01L41/29 ,  H01L41/338

摘要： A method for fabricating an intravascular imaging assembly is provided. In one embodiment, the method includes forming a stacked structure (415) having a plurality of sacrificial material layers disposed between a plurality of ultrasound material layers in an alternating pattern; dicing the stacked structure (420) to form a plurality of elongated strips, each comprising an array of ultrasound elements defined by the plurality of ultrasound material layers and spacers defined by the plurality of sacrificial material layers; coupling a first elongated strip (430) of the plurality of elongated strips to a flexible circuit substrate; and removing the spacers (435) of the first elongated strip from the flexible circuit substrate.

公开(公告)号：US11050407B2

公开(公告)日：2021-06-29

申请号：US16582010

申请日：2019-09-25

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Atsushi Takano

IPC分类号： H01L21/00 ,  H03H9/10 ,  H03H3/02 ,  H03H9/17 ,  H03H9/05 ,  H01L41/313 ,  H01L41/338 ,  H01L23/00 ,  H01L41/337 ,  B23K26/382 ,  B23K1/00 ,  B23K26/402 ,  B23K20/16 ,  H01L21/18 ,  H01L25/065 ,  H03H9/70 ,  B23K101/36 ,  B23K103/16 ,  B23K101/42

摘要： An electronic device includes a first substrate and a second substrate. A side wall joins the first substrate to the second substrate. The side wall includes a first alloy layer of a first metal and a second metal bonded directly to an upper surface of the first substrate and a second alloy layer of the first metal and a third metal disposed on top of the first alloy layer and bonded directly to a lower surface of the second substrate, the second metal and the third metal being different from each other and from the first metal. An electronic circuit is disposed on the lower surface of the second substrate within a cavity defined by the lower surface of the first substrate, the upper surface of the second substrate, and the side wall.

公开(公告)号：US10973494B2

公开(公告)日：2021-04-13

申请号：US15699771

申请日：2017-09-08

申请人： EchoNous, Inc.

发明人： Kelly James Koski ,  Joel Dean Wetzstein ,  Greg Nieminen

IPC分类号： A61B8/00 ,  H01L41/311 ,  H01L41/338 ,  B06B1/06 ,  H01L41/29 ,  H01L41/047 ,  H05K1/18 ,  B06B1/02 ,  H05K1/11 ,  H04R17/00

摘要： Flex circuits and methods for ultrasound transducers are provided herein. In at least one embodiment, an ultrasound device includes a plurality of transducer elements and a flex circuit. The flex circuit includes an insulating layer having a first surface and a second surface opposite the first surface. A plurality of first conductive pads is included on the first surface of the insulating layer, and each of the first conductive pads is electrically coupled to a respective transducer element. A plurality of second conductive pads are included on the second surface of the insulating layer, and each of the second conductive pads is electrically coupled to a respective first conductive pad and the respective transducer element.

公开(公告)号：US10938372B2

公开(公告)日：2021-03-02

申请号：US16390739

申请日：2019-04-22

申请人： TAIYO YUDEN CO., LTD.

发明人： Ryohei Komiyama ,  Hitoshi Tsukidate ,  Shinji Yamamoto

IPC分类号： H03H9/02 ,  H03H3/10 ,  H03H9/145 ,  H03H9/64 ,  H03H9/72 ,  B23K26/53 ,  B23K26/00 ,  H03H9/25 ,  H01L41/338 ,  H01L41/312

摘要： An acoustic wave resonator includes: a piezoelectric substrate; a pair of comb-shaped electrodes that is located on the piezoelectric substrate and excites an acoustic wave, each of the pair of comb-shaped electrodes including a plurality of electrode fingers; and a polycrystalline substrate that is located at an opposite side of the piezoelectric substrate from a surface on which the pair of comb-shaped electrodes is located, an average particle size of the polycrystalline substrate being equal to or less than 66 times an average pitch of the plurality of electrode fingers.

公开(公告)号：US20210038092A1

公开(公告)日：2021-02-11

申请号：US16929731

申请日：2020-07-15

申请人： Apple Inc.

发明人： Ali M. Amin ,  Yindar Chuo ,  Zijing Zeng

IPC分类号： A61B5/0205 ,  H01L41/047 ,  H01L41/053 ,  H01L41/113 ,  H01L41/193 ,  H01L41/29 ,  H01L41/313 ,  H01L41/338 ,  A61B5/00

摘要： A sleep monitor includes a layered sensor that includes at least one substrate layer that includes multiple laterally adjacent substrates. The substrate layer may be formed by interdigitating fingers of a first sheet with fingers of a second sheet. Combining multiple substrates in a single layer of a layered sensor may allow multiple materials and/or sensing mechanisms to be combined together in a single layer.

公开(公告)号：US10916691B2

公开(公告)日：2021-02-09

申请号：US15698983

申请日：2017-09-08

申请人： Murata Manufacturing Co., Ltd.

发明人： Kimitoshi Nakamura ,  Hisanobu Nakashima

IPC分类号： H01L41/047 ,  H01L41/338 ,  H01L41/257

摘要： The structure of a mother piezoelectric element allows a polarization process to be performed on the mother body before the individual piezoelectric elements are cut from the mother piezoelectric element. The mother piezoelectric element includes a plurality of first internal electrodes which are provided on at least one first surface and a plurality of second internal electrodes which are provided on at least one second surface. Each of the first and second internal electrodes is led out to any of first to fourth side surfaces of a mother piezoelectric body. The plurality of first internal electrodes are electrically connected to each other on a first surface and the plurality of second internal electrodes are electrical connected to each other on a second surface. All the first internal electrodes in the mother piezoelectric body are electrically connected to each other, and all the second internal electrodes in the mother piezoelectric body are electrically connected to each other.