公开(公告)号：US11867167B2

公开(公告)日：2024-01-09

申请号：US17369289

申请日：2021-07-07

申请人： Murata Manufacturing Co., Ltd.

发明人： Nobuhira Tanaka ,  Masaaki Fujisaki

IPC分类号： F04B43/04 ,  H10N30/20 ,  F04B45/04 ,  F04B45/047

CPC分类号： F04B43/046 ,  F04B45/041 ,  H10N30/2047 ,  F04B45/047

摘要： A piezoelectric pump includes a first top plate, a second top plate, a diaphragm, a first side wall, and a second side wall. The diaphragm has a vibrating part to which a piezoelectric element is attached, a frame part, and a connecting part. The connecting part has formed therein a third opening which lets a first pump chamber and a second pump chamber communicate. The frame part has formed therein a fourth opening which communicates with the third opening and also communicates with outside. The piezoelectric pump further includes: in the first pump chamber, an annular first valve provided as spaced from a first opening in a planar view so as to surround the first opening; and in the second pump chamber, an annular second valve provided as spaced from a second opening in the planar view so as to surround the second opening.

公开(公告)号：US11845275B2

公开(公告)日：2023-12-19

申请号：US17537940

申请日：2021-11-30

申请人： TOSHIBA TEC KABUSHIKI KAISHA

发明人： Masashi Shimosato ,  Taiki Goto ,  Akio Hamada

IPC分类号： B41J2/14 ,  H10N30/50 ,  H10N30/057 ,  H10N30/063 ,  H10N30/088 ,  H10N30/87 ,  H10N30/20 ,  H10N30/853

CPC分类号： B41J2/14201 ,  H10N30/057 ,  H10N30/063 ,  H10N30/088 ,  H10N30/2047 ,  H10N30/50 ,  H10N30/8542 ,  H10N30/8554 ,  H10N30/871 ,  H10N30/872 ,  H10N30/875

摘要： According to one embodiment, a liquid discharge head includes a flexible printed circuit (FPC) connected to piezoelectric elements. The FPC has a first end in the first direction. A wiring layer of the FPC has a first region at the first end and a cover layer covering on a second region. The piezoelectric elements are spaced from each other in a second direction and each has a first electrode on a side surface facing towards the FPC. The first side has a joint surface facing the first region of the wiring layer. The first electrode is electrically connected to the wiring layer at the joint surface. The side surface includes a step portion that is recessed from the joint surface. A portion of the cover layer protrudes into a space adjacent to the step portion.

公开(公告)号：US11837975B2

公开(公告)日：2023-12-05

申请号：US16775542

申请日：2020-01-29

申请人： CANON KABUSHIKI KAISHA ,  FUJI CHEMICAL CO., LTD.

发明人： Makoto Kubota ,  Kanako Oshima ,  Hisato Yabuta ,  Takanori Matsuda ,  Miki Ueda ,  Fumio Uchida ,  Hiroki Imai ,  Kenji Maeda ,  Chiemi Shimizu

IPC分类号： H02N2/10 ,  B41J2/14 ,  C04B35/495 ,  C04B35/626 ,  C04B35/634 ,  C04B35/64 ,  H04N23/52 ,  H10N30/50 ,  H10N30/053 ,  H10N30/87 ,  H10N30/20 ,  H10N30/853

CPC分类号： H02N2/103 ,  B41J2/14233 ,  C04B35/495 ,  C04B35/62695 ,  C04B35/63416 ,  C04B35/64 ,  H04N23/52 ,  H10N30/053 ,  H10N30/2047 ,  H10N30/50 ,  H10N30/8536 ,  H10N30/8542 ,  H10N30/871 ,  C04B2235/3234 ,  C04B2235/3255 ,  C04B2235/3263 ,  C04B2235/6021 ,  C04B2235/6567 ,  C04B2235/768

摘要： A piezoelectric material includes: an oxide containing Na, Ba, Nb, Ti, and Mn, in which the oxide has a perovskite-type structure, a total amount of metal elements other than Na, Ba, Nb, Ti, and Mn contained in the piezoelectric material is 0.5 mol % or less with respect to a total amount of Na, Ba, Nb, Ti, and Mn, a molar ratio x of Ti to a total molar amount of Nb and Ti is 0.05≤x≤0.12, a molar ratio y of Na to Nb is 0.93≤y≤0.98, a molar ratio z of Ba to Ti is 1.09≤z≤1.60, a molar ratio m of Mn to the total molar amount of Nb and Ti is 0.0006≤m≤0.0030, and 1.07≤y×z≤1.50 is satisfied.

公开(公告)号：US11810604B2

公开(公告)日：2023-11-07

申请号：US17949712

申请日：2022-09-21

申请人： STMICROELECTRONICS S.r.l.

发明人： Domenico Giusti ,  Marco Ferrera

IPC分类号： G11B5/60 ,  G11B5/48 ,  G11B5/73 ,  H10N30/03 ,  H10N30/20

CPC分类号： G11B5/6058 ,  G11B5/483 ,  G11B5/73919 ,  H10N30/03 ,  H10N30/2047

摘要： Various embodiments of the present disclosure provide a read/write device for a hard-disk memory system. The read/write device includes a fixed structure; a membrane region including a first and a second membrane, which are constrained to the fixed structure, and a central portion, interposed between the first and second membranes; a first and a second piezoelectric actuator, mechanically coupled, respectively, to the first and second membranes; and a read/write head, which is fixed to the central portion of the membrane region. The first and second piezoelectric actuators can be controlled so as to cause corresponding deformations of the first and second membranes, said deformations of the first and second membranes causing corresponding movements of the read/write head with respect to the fixed structure.

公开(公告)号：US11800804B2

公开(公告)日：2023-10-24

申请号：US17896794

申请日：2022-08-26

申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

发明人： Bernhard Boser ,  David Horsley ,  Richard Przybyla ,  Ofer Rozen ,  Stefon Shelton

IPC分类号： H01L21/34 ,  H10N30/085 ,  B06B1/06 ,  G10K9/122 ,  G10K13/00 ,  H10N30/50 ,  H10N30/082 ,  H10N30/30 ,  H10N30/853 ,  H10N30/20 ,  G10K9/12

CPC分类号： H10N30/085 ,  B06B1/0622 ,  B06B1/0666 ,  G10K9/121 ,  G10K9/122 ,  G10K13/00 ,  H10N30/082 ,  H10N30/2047 ,  H10N30/308 ,  H10N30/50 ,  H10N30/853

摘要： A diaphragm for a piezoelectric micromachined ultrasonic transducer (PMUT) is presented having resonance frequency and bandwidth characteristics which are decoupled from one another into independent variables. Portions of at least the piezoelectric material layer and backside electrode layer are removed in a selected pattern to form structures, such as ribs, in the diaphragm which retains stiffness while reducing overall mass. The patterned structure can be formed by additive, or subtractive, fabrication processes.

公开(公告)号：US20230328459A1

公开(公告)日：2023-10-12

申请号：US18301282

申请日：2023-04-17

申请人： SHENZHEN SHOKZ CO., LTD.

发明人： Guangyuan ZHU ,  Lei ZHANG ,  Xin QI

IPC分类号： H04R17/10 ,  H10N30/20 ,  H04R7/20

CPC分类号： H04R17/10 ,  H10N30/2047 ,  H04R7/20

摘要： One or more embodiments of the present disclosure relate to a vibration device. The vibration device may include a mass component; one or more piezoelectric components configured to produce a vibration based on an electrical signal; one or more elastic components, wherein at least one elastic component of the one or more elastic components are connected to the mass component and the one or more piezoelectric components; wherein the one or more piezoelectric components include a ring structure, and the one or more piezoelectric components are configured to be parallel to an axial direction of the ring structure based on a vibration direction of the electrical signal.

公开(公告)号：US11758312B2

公开(公告)日：2023-09-12

申请号：US17740322

申请日：2022-05-09

申请人： XMEMS TAIWAN CO., LTD.

发明人： Hsien-Ken Liao ,  Chiung C. Lo

IPC分类号： H04R25/00 ,  H04R1/04 ,  H04R17/00 ,  H04R31/00 ,  H10N30/20

CPC分类号： H04R1/04 ,  H04R17/00 ,  H04R31/006 ,  H10N30/2047 ,  H04R2201/003

摘要： A sound producing package structure includes a first sub-package structure and a second sub-package structure. The first sub-package structure includes a first substrate having a first opening and a first chip including a first membrane, wherein a first cavity is formed between the first membrane and the first substrate. The first sub-package structure and the second sub-package structure are stacked, and the second sub-package structure includes a second substrate and a second chip. The second substrate is connected to the first substrate and has a second opening. The second chip includes a second membrane, wherein a second cavity is formed between the second membrane and the second substrate. A gap, connected to the first opening and the second opening, is formed between the first substrate and the second substrate, such that an ambient of the sound producing package structure, the first cavity and the second cavity are connected.

公开(公告)号：US20230264474A1

公开(公告)日：2023-08-24

申请号：US18003713

申请日：2021-07-06

申请人： ROHM CO., LTD.

发明人： Eitaro KUROKAWA ,  Osamu MATSUSHIMA ,  Noriyuki SHIMOJI ,  Tatsuya SUZUKI ,  Daisuke NOTSU

IPC分类号： B41J2/14 ,  H10N30/20 ,  H10N30/87 ,  H10N30/88 ,  H10N30/082 ,  B41J2/16

CPC分类号： B41J2/14233 ,  H10N30/2047 ,  H10N30/87 ,  H10N30/88 ,  H10N30/082 ,  B41J2/1607 ,  B41J2/164

摘要： An inkjet printing head includes a piezoelectric element that includes a lower electrode disposed on a movable film, a piezoelectric film formed on the lower electrode, and an upper electrode formed on the piezoelectric film, a hydrogen barrier film that covers, in a front surface of the piezoelectric element, at least, entireties of side surfaces of the upper electrode, the piezoelectric film, and the lower electrode, at least a part of an upper surface of the upper electrode, and an upper surface of the lower electrode, a first interlayer insulating film formed on a front surface other than an end surface of the hydrogen barrier film, a second interlayer insulating film formed so as to cover the end surface of the hydrogen barrier film and the first interlayer insulating film, and a wiring that is formed on the second interlayer insulating film and that is connected to the piezoelectric element.

公开(公告)号：US11735496B2

公开(公告)日：2023-08-22

申请号：US17154970

申请日：2021-01-21

申请人： Frore Systems Inc.

发明人： Suryaprakash Ganti ,  Seshagiri Rao Madhavapeddy

IPC分类号： H05K7/20 ,  H01L23/46 ,  F04B43/04 ,  H01L23/473 ,  H10N30/20 ,  F04B17/00 ,  F04B39/06 ,  F04B43/09 ,  F04B45/04 ,  F04B45/047 ,  F04B53/10 ,  F04D33/00 ,  F25B21/02 ,  H01L23/42 ,  H01L23/427 ,  H01L23/433 ,  H04M1/02 ,  H10N30/80 ,  B06B1/06 ,  F04B43/08

CPC分类号： H01L23/4735 ,  B06B1/06 ,  F04B17/003 ,  F04B39/06 ,  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 ,  H05K7/2039 ,  H05K7/20272 ,  H05K7/20281 ,  H10N30/20 ,  H10N30/204 ,  H10N30/2047 ,  H10N30/80 ,  F04B43/08 ,  F25B2321/023 ,  F25B2321/025 ,  F25B2321/0212 ,  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：US11711980B2

公开(公告)日：2023-07-25

申请号：US17088813

申请日：2020-11-04

申请人： KOGE MICRO TECH CO., LTD.

发明人： Chung-Han Wu ,  Hsin-Cheng Wang

IPC分类号： H01L41/047 ,  H10N30/20 ,  F04B43/04 ,  H10N30/88 ,  H10N30/87

CPC分类号： H10N30/2047 ,  F04B43/046 ,  H10N30/875 ,  H10N30/88

摘要： A fluid actuator includes an actuating portion, a piezoelectric unit, a conduction unit, and a levelness regulating portion. The actuating portion includes a first actuating area, a second actuating area, and at least one connecting section between the two actuating areas. The piezoelectric unit includes a first signal area and a second signal area. The two signal areas are provided in the same plane and are isolated from each other by an isolating portion. The piezoelectric unit corresponds in position to the first actuating area of the actuating portion. The conduction unit includes a first electrode and a second electrode. The first signal area of the piezoelectric unit is electrically connected to the first electrode, and the second signal area of the piezoelectric unit to the second electrode. The levelness regulating portion, the piezoelectric unit, and the conduction unit are located on the same side of the actuating portion.