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公开(公告)号:US12063864B2
公开(公告)日:2024-08-13
申请号:US17153809
申请日:2021-01-20
申请人: FUJIFILM CORPORATION
发明人: Takami Arakawa , Takayuki Naono
IPC分类号: H10N30/853 , H10N30/00 , H10N30/045
CPC分类号: H10N30/8554 , H10N30/045 , H10N30/101
摘要: A piezoelectric device and a manufacturing method thereof in which a piezoelectric film formed of a thin film of a lead zirconate titanate-based perovskite oxide is formed on a substrate, and at least a first region out of the first region and a second region of the piezoelectric film is irradiated with electromagnetic waves having a wavelength of 230 nm or less in a reducing atmosphere to provide a difference in piezoelectric characteristics between the first region and the second region so that the first region has a smaller absolute value of a piezoelectric constant d31 and a smaller dielectric loss tan δ than the second region.
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公开(公告)号:US12048248B2
公开(公告)日:2024-07-23
申请号:US17916248
申请日:2021-04-01
发明人: Soma Guhathakurta , Theodorus Hoeks Lambertus , Ramanarayanan Ganapathy Bhotla Venkata , Donald Owens
IPC分类号: H10N30/85 , C08J3/00 , C08J3/21 , C08J5/18 , C08K3/22 , C08L27/16 , H10N30/045 , H10N30/092 , H10N30/30
CPC分类号: H10N30/852 , C08J3/005 , C08J3/212 , C08J5/18 , C08K3/22 , C08L27/16 , H10N30/045 , H10N30/092 , H10N30/302 , C08J2327/16 , C08J2433/12 , C08J2433/20 , C08J2471/12 , C08K2003/2203 , C08K2201/001 , C08L2203/16 , C08L2203/20
摘要: A polymer composite exhibiting piezoelectric properties can be formed for flexible and/or thin film applications, in which the polymer composite includes a polymer matrix and a piezoelectric ceramic filler embedded in the polymer matrix. The polymer matrix may include at least two polymers: a first polymer and a second polymer. The first polymer may be a fluorinated polymer, and the second polymer may be compatible with the first polymer and have a dielectric constant of less than approximately 20. The piezoelectric ceramic filler can be lithium doped potassium sodium niobite (KNLN), and be approximately 40-70% by volume of the polymer composite. The remaining 30-60% by volume may be the polymer matrix, which may itself be approximately 5-20% by weight second polymer and 80-95% fluorinated polymer.
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公开(公告)号:US20240091812A1
公开(公告)日:2024-03-21
申请号:US18263971
申请日:2022-02-01
申请人: TDK Electronics AG
发明人: Wolfgang Wallnöfer , Aditya Rajapurkar , Gert Turel , Zdravko Mijocevic , Andreas Pentscher-Stani
IPC分类号: B06B1/06 , H10N30/03 , H10N30/045 , H10N30/063 , H10N30/87
CPC分类号: B06B1/0622 , H10N30/03 , H10N30/045 , H10N30/063 , H10N30/875 , G06F3/016
摘要: A device and a method are disclosed. In an embodiment, a device includes an oscillating body on which a piezoelectric element is fixed by a solder joint.
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公开(公告)号:US11861931B2
公开(公告)日:2024-01-02
申请号:US17414372
申请日:2020-06-02
发明人: Yingming Liu , Haisheng Wang , Xiaoliang Ding , Lei Wang , Changfeng Li
IPC分类号: G06K9/00 , G06V40/13 , B06B1/06 , H10K59/65 , H10N30/045 , H10N30/077 , H10N30/857
CPC分类号: G06V40/1318 , B06B1/0692 , H10K59/65 , H10N30/045 , H10N30/077 , H10N30/857 , B06B2201/70
摘要: A piezoelectric sensor, a manufacturing method thereof and an electronic device are provided. The piezoelectric sensor includes a substrate, an active layer, the active layer being disposed at a side of the substrate: a first electrode, the first electrode being disposed at a side of the active laver a wav from the substrate, and the first electrode including a plurality of sub-electrodes disposed at intervals: a piezoelectric layer, the piezoelectric layer being disposed at a side of the first electrode away from the active layer; and a second electrode, the second electrode being disposed at a side of the piezoelectric layer away from the first electrode. The active layer is configured to be capable of switching between an insulating state and a conducting state, and in the conducting state the active layer is capable of conducting the plurality of sub-electrodes.
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公开(公告)号:US20230354713A1
公开(公告)日:2023-11-02
申请号:US18220666
申请日:2023-07-11
申请人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. , Christian-Albrechts-Universitaet zu Kiel
发明人: Bernhard WAGNER , Fabian LOFINK , Dirk KADEN , Simon FICHTNER
CPC分类号: H10N30/853 , H10N30/2042 , B81B7/02 , H10N30/1051 , H10N30/045 , H10N30/50 , B81B2201/03
摘要: A ferroelectric material includes a mixed crystal having AlN and at least one nitride of a transition metal. The proportion of the nitride of the transition metal is selected such that a direction of an initial or spontaneous polarity of the ferroelectric material is switchable by applying a switchover voltage. The switchover voltage is below a breakdown voltage of the ferroelectric material.
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公开(公告)号:US11769524B2
公开(公告)日:2023-09-26
申请号:US17322608
申请日:2021-05-17
发明人: Kuen Chee Ee , Long Zhang , Peter Hahn , David Glaess
IPC分类号: G11B5/48 , G11B5/56 , G11B5/55 , H10N30/03 , H10N30/045 , H10N30/063 , H10N30/067 , H10N30/072
CPC分类号: G11B5/483 , G11B5/4873 , G11B5/5552 , G11B5/56 , H10N30/03 , H10N30/045 , H10N30/063 , H10N30/067 , H10N30/072 , Y10T29/42
摘要: A multi-layer piezoelectric microactuator assembly has at least one poled and active piezoelectric layer and one poled but inactive piezoelectric layer. The poled but inactive layer acts as a constraining layer in resisting expansion or contract of the first piezoelectric layer thereby reducing or eliminating bending of the assembly as installed in an environment, thereby increasing the effective stroke length of the assembly. Poling only a single layer would induce stresses into the device; hence, polling both piezoelectric layers even though only one layer will be active in use reduces stresses in the device and therefore increases reliability.
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公开(公告)号:US20230241646A1
公开(公告)日:2023-08-03
申请号:US18157319
申请日:2023-01-20
发明人: Kenji SERA , Kenichi HAYASHI , Hiroshi HAGA , Shin TAKEUCHI
IPC分类号: B06B1/06 , H10N30/045
CPC分类号: B06B1/0692 , H10N30/045
摘要: A method of manufacturing a piezoelectric element array board includes fabricating a plurality of piezoelectric element control circuits including one or more thin-film transistors on a substrate, fabricating a plurality of piezoelectric elements on the substrate, and poling a piezoelectric material by applying an electric field to a piezoelectric material layer of the plurality of piezoelectric elements while maintaining the one or more thin-film transistors in a state of generating higher leakage current, after fabricating the plurality of piezoelectric elements and the plurality of piezoelectric element control circuits.
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公开(公告)号:US20240345385A1
公开(公告)日:2024-10-17
申请号:US18752572
申请日:2024-06-24
申请人: Magic Leap, Inc.
发明人: Emma Rae Mullen , Mina Rohani , Benjamin John Kuehn , Abhijith Rajiv , Brian T. Schowengerdt , Sarah Colline McQuaide
CPC分类号: G02B26/103 , H02N2/028 , H02N2/04 , H02N2/062 , H02N2/22 , H10N30/045
摘要: A method of fabricating a fiber scanning system includes forming a set of piezoelectric elements. The method also includes coating an interior surface and an exterior surface of each of the set of piezoelectric elements with a first conductive material. The method also includes providing a fiber optic element having an actuation region and coating the actuation region of the fiber optic element with a second conductive material. The method also includes joining the interior surfaces of the set of piezoelectric elements to the actuation region of the fiber optic element and poling the set of piezoelectric elements. The method also includes forming electrical connections to the exterior surface of each of the set of piezoelectric elements and the fiber optic element.
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公开(公告)号:US12096695B2
公开(公告)日:2024-09-17
申请号:US17213573
申请日:2021-03-26
申请人: TDK CORPORATION
发明人: Yuiko Hirose , Hiroki Katoh , Yumi Akiyama
IPC分类号: H10N30/50 , H10N30/045 , H10N30/053 , H10N30/20 , H10N30/40 , H10N30/853 , H10N30/87
CPC分类号: H10N30/50 , H10N30/045 , H10N30/053 , H10N30/20 , H10N30/40 , H10N30/8542 , H10N30/8554 , H10N30/871 , H10N30/877
摘要: 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.
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公开(公告)号:US12055706B2
公开(公告)日:2024-08-06
申请号:US17127538
申请日:2020-12-18
申请人: Magic Leap, Inc.
发明人: Emma Rae Mullen , Mina Rohani , Benjamin John Kuehn , Abhijith Rajiv , Brian T. Schowengerdt , Sarah Colline McQuaide
CPC分类号: G02B26/103 , H02N2/028 , H02N2/04 , H02N2/062 , H02N2/22 , H10N30/045
摘要: A fiber scanning system includes a fiber optic element having an actuation region and a motion actuator mechanically coupled to the fiber optic element. A continuous bond line is present between the actuation region and the motion actuator. The fiber scanning system also includes a retention collar mechanically coupled to the motion actuator.
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