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公开(公告)号：US11575094B2
公开(公告)日：2023-02-07
申请号：US16415312
申请日：2019-05-17
发明人： Jr-Hau He , Tzu-Chiao Wei
IPC分类号： H01L51/42 , H01L31/0392 , H01L41/107 , H01L41/113
摘要： An energy converting device includes a base, which is fixed; a methylammonium lead bromide (MAPbBr3) material having a first end fixedly attached to the base and a second end free to move; and an actuator block attached to the second end of the MAPbBr3 material. The actuator block moves relative to the base when the MAPbBr3 material is exposed to light.
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公开(公告)号：US20230026677A1
公开(公告)日：2023-01-26
申请号：US17858433
申请日：2022-07-06
IPC分类号： H02M7/217 , H02M3/00 , H01L41/107
摘要： This control device is configured to control a converter comprising a piezoelectric element and several switches, and capable of delivering N output voltage(s) from of E input voltage(s), E≥1, N≥1.
The control device comprises a module for controlling, during a respective resonance cycle of the piezoelectric element, switching of the switches to alternate phases at substantially constant voltage and phases at a substantially constant charge at the terminals of the piezoelectric element, each cycle comprising first and second half-cycles, a current flowing in one direction in the piezoelectric element during first half-cycle and in an opposite direction during the second half-cycle.
The number of substantially constant voltage phases during a cycle is greater than or equal to E+N+2, and each of the half-cycles comprises at least two substantially constant voltage phases.-
公开(公告)号：US11558084B2
公开(公告)日：2023-01-17
申请号：US17336023
申请日：2021-06-01
发明人： Hiroto Tamaki
IPC分类号： H04B5/00 , H01L41/107 , H01L41/22 , G02F1/225
摘要： A wireless communication system includes a first coupler having a first pair of electrodes and second coupler having a second pair of electrodes that at least partially oppose the first pair of electrodes. A transmission circuit applies a differential signal to the first coupler. A reception circuit receives a differential signal output from the second coupler based on electromagnetic coupling between the first coupler and the second coupler. A distance between centroids of the first pair of electrodes differs from a distance between centroids of the second pair of electrodes.
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公开(公告)号：US11251358B2
公开(公告)日：2022-02-15
申请号：US15746763
申请日：2016-06-27
申请人： EPCOS AG
发明人： Bernhard Doellgast , Markus Puff , Pavol Kudela
IPC分类号： H01L41/047 , H01L41/053 , H01L41/107 , H01L23/32 , H01L41/187
摘要： The present invention relates to a holder (5) for a piezoelectric component (1), having a clamping device (6) and two contact elements (8) which contain a conductive rubber material, wherein the clamping device (6) is designed to clamp the piezoelectric component (1) between the contact elements (8) in a closed state, and wherein the contact elements (8) are in electrical contact with the piezoelectric component (1) in the closed state of the clamping device (6).
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公开(公告)号：US11233190B2
公开(公告)日：2022-01-25
申请号：US16273191
申请日：2019-02-12
IPC分类号： H01L41/257 , H01L41/047 , H01L41/107 , H02N2/18 , B06B1/06 , H01L41/083 , H01L41/29
摘要： A piezoelectric transformer that includes a vibration portion assembly having an output electrode, an output-side intermediate electrode, an input-side intermediate electrode, and an input electrode. The vibration portion assembly includes n vibration portions. The input electrode includes one to n input electrode pieces. The output electrode includes one to n output electrode pieces. Wiring lines are arranged such that voltages of opposite phases can be respectively applied to a first input electrode piece group of the input electrode pieces corresponding to odd-numbered vibration portions, and a second input electrode piece group of the input electrode pieces corresponding to even-numbered vibration portions. The second output electrode piece and the first output-side intermediate electrode piece are superposed with each other in the thickness direction. The first output electrode piece is not superposed with either of the first and second output-side intermediate electrode pieces in the thickness direction.
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公开(公告)号：US20210305484A1
公开(公告)日：2021-09-30
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： H01L41/083 , H01L41/047 , H01L41/09 , H01L41/107 , H01L41/187 , H01L41/273 , H01L41/257
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：US11024794B2
公开(公告)日：2021-06-01
申请号：US16306512
申请日：2017-05-31
申请人： TDK Electronics AG
发明人： Bernhard Doellgast , Markus Puff
IPC分类号： H01L41/083 , H01L41/107 , H01L41/337 , H01L41/335 , H01L41/047 , H01L41/273
摘要： A method for producing a plurality of piezoelectric multilayer components is disclosed. In an embodiment, a method for producing a plurality of piezoelectric multilayer components includes grinding the piezoelectric multilayer components without an addition of an abrasive by rubbing the piezoelectric multilayer components against one another so that a material abrasion of the piezoelectric multilayer components is carried out.
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8.发明授权公开(公告)号：US11018292B2
公开(公告)日：2021-05-25
申请号：US15795579
申请日：2017-10-27
IPC分类号： H01L41/09 , H01L41/107 , H01L41/047 , H01L41/04 , H01L41/31 , H01L41/083 , H01L41/187 , H01L41/314 , H04R17/00
摘要： A piezoelectric device that includes a base member having an opening therein and an upper layer supported by the base member. The upper layer includes a vibration portion at a location corresponding to the opening in the base member. The vibration portion includes a lower electrode, an intermediate electrode and an upper electrode that are spaced apart from one another in a thickness direction of the piezoelectric device. The upper layer includes a first piezoelectric layer disposed so as to be at least partially sandwiched between the lower electrode and the intermediate electrode, and a second piezoelectric layer disposed so as to overlap with the first piezoelectric layer and so as to be at least partially sandwiched between the intermediate electrode and the upper electrode. The first piezoelectric layer and the second piezoelectric layer are different in relative permittivity in the thickness direction of the piezoelectric device.
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公开(公告)号：US20210135086A1
公开(公告)日：2021-05-06
申请号：US17087836
申请日：2020-11-03
发明人： Ignacio CASTRO , Grzegorz POPEK
摘要： An output filter for a power train includes a piezoelectric transformer, a load element connected across the output of the piezoelectric transformer and an inductor connected to an input of the piezoelectric transformer.
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公开(公告)号：US20210111689A1
公开(公告)日：2021-04-15
申请号：US17119904
申请日：2020-12-11
发明人： Benjamin Paul Abbott , Rei Goto
IPC分类号： H03H3/08 , H01L41/107
摘要： 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.
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