公开(公告)号：US20240365672A1

公开(公告)日：2024-10-31

申请号：US18428711

申请日：2024-01-31

申请人： Elastimed Ltd.

发明人： Omer Zelka

IPC分类号： H10N30/88 ,  B29C55/02 ,  B29C65/00 ,  B29C65/48 ,  B29L31/34 ,  B32B7/12 ,  B32B27/08 ,  B32B37/12 ,  B32B37/18 ,  B32B38/00 ,  H10N30/06 ,  H10N30/098 ,  H10N30/80 ,  H10N30/857 ,  H10N30/87

CPC分类号： H10N30/886 ,  B29C55/02 ,  B29C65/48 ,  B29C66/022 ,  B29C66/45 ,  B32B7/12 ,  B32B27/08 ,  B32B37/12 ,  B32B37/182 ,  B32B38/0012 ,  H10N30/06 ,  H10N30/098 ,  H10N30/802 ,  H10N30/857 ,  H10N30/87 ,  B29K2995/0005 ,  B29K2995/0046 ,  B29L2031/3406 ,  B32B2038/0028 ,  B32B2255/10 ,  B32B2255/20 ,  B32B2255/205 ,  B32B2255/26 ,  B32B2307/202 ,  B32B2307/51 ,  B32B2457/00

摘要： A structure including an electro-active-polymer (“EAP”). The structure can take the form of a strap, which includes two or more EAP film layers. The structure can further include one or more holders or end-grabbing portions. Methods of making and using the EAP structure are also envisioned.

公开(公告)号：US12120960B2

公开(公告)日：2024-10-15

申请号：US16765796

申请日：2018-11-20

申请人： NITTO DENKO CORPORATION

发明人： Yusuke Komoto ,  Kohei Oto ,  Saori Yamamoto ,  Ryohei Oban ,  Tomoaki Hishiki

IPC分类号： H02N2/00 ,  B32B7/025 ,  B32B7/12 ,  H04R17/00 ,  H10N30/20 ,  H10N30/857

CPC分类号： H10N30/857 ,  B32B7/025 ,  B32B7/12 ,  H04R17/00 ,  H10N30/2047

摘要： A piezoelectric speaker (10) includes a piezoelectric film (35), a first joining layer (51), and an interposed layer (40). The piezoelectric film (35) includes a first electrode (61), a second electrode (62), and a piezoelectric body (30) sandwiched by the first electrode (61) and the second electrode (62). The first joining layer (51) is a layer having pressure-sensitive adhesiveness or adhesiveness. The interposed layer (40) is disposed between the piezoelectric film (35) and the first joining layer (51). Both principal surfaces of the piezoelectric film (35) vibrate up and down as a whole.

公开(公告)号：US20240305223A1

公开(公告)日：2024-09-12

申请号：US18664382

申请日：2024-05-15

申请人： Morgan State University

发明人： Birol Ozturk ,  Peker Milas

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

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

摘要： A compact system for optimizing energy harvesting efficiency using of very thin (less than 10 μm thickness) PVDF films. The system is comprised of a flexible substrate such as polypropylene (PP) or Polydimethylsiloxane (PDMS) that supports PVDF thin films sandwiched between two aluminum electrode sheets. The PVDF films may be fabricated at different selected thicknesses by increasing spin rates. The PVDF films may also be fabricated in various different stacking arrangements in order to further allow the electrode to more efficiently produce energy.

公开(公告)号：US20240244978A1

公开(公告)日：2024-07-18

申请号：US18553905

申请日：2022-04-18

申请人： Mitsui Chemicals, Inc.

发明人： Jun OKABE ,  Tadahiro SUNAGA ,  Shizuo TOKITO

IPC分类号： H10N30/857 ,  C08J5/12 ,  C08J5/18 ,  G01L1/16 ,  H02N2/18 ,  H10N30/87

CPC分类号： H10N30/857 ,  C08J5/128 ,  C08J5/18 ,  G01L1/16 ,  H02N2/181 ,  H02N2/186 ,  H10N30/87 ,  C08J2327/16 ,  C08J2367/04

摘要： Provided is a polymer piezoelectric film element which generates electricity at a high sensitivity upon vibrations across a broad frequency band, including those caused by the motion of humans or animals or faint contact stress, and those caused by automobiles and so on, which can be made into a thin film and at a high yield, and which can be used as a stably driving power supply device, a tactile sensor, or a vital sensor. The present invention pertains to: a polymer piezoelectric film element characterized in that an electrode sheet is formed on both surfaces of a polymer piezoelectric film, and by having a structure which has bumps and dips or a wave-shaped structure which has peaks and valleys in an axis perpendicular to said surfaces; and a power storage device, a sensor, or a vital sensor.

公开(公告)号：US12004429B2

公开(公告)日：2024-06-04

申请号：US18464745

申请日：2023-09-11

申请人： Kureha Corporation

发明人： Yusuke Sato ,  Hisaaki Terashima ,  Nobufumi Sato ,  Kazuyuki Kanno ,  Keiko Aita

IPC分类号： H10N30/098 ,  B29C71/02 ,  C08J5/18 ,  H10N30/857

CPC分类号： H10N30/857 ,  C08J5/18 ,  C08J7/08 ,  H10N30/098 ,  C08J2327/16

摘要： To provide a piezoelectric body film that can suppress decrease in the piezoelectric constant d31, a method of producing a piezoelectric body film, and a piezoelectric body device. A piezoelectric body film comprising a fluororesin as a piezoelectric material, the fluororesin containing, as a main constituent unit, a repeating unit derived from vinylidene fluoride, a piezoelectric constant d31 of the piezoelectric body film being 20 pC/N or greater, and an extrapolated onset temperature at start of shrinkage determined by TMA measurement being not lower than 90° C. and not higher than 115° C. The difference between piezoelectric constants d31 measured before and after heating the piezoelectric body film at 100° C. for 24 hours relative to the piezoelectric constant d31 before the heating for 24 hours is 20% or less.

公开(公告)号：US11963454B2

公开(公告)日：2024-04-16

申请号：US16969605

申请日：2018-10-19

申请人： Kureha Corporation

发明人： Yusuke Sato ,  Hisaaki Terashima ,  Nobufumi Sato ,  Kazuyuki Kanno ,  Keiko Aita

IPC分类号： H10N30/098 ,  B29C71/02 ,  C08J5/18 ,  H10N30/857

CPC分类号： H10N30/857 ,  C08J5/18 ,  C08J7/08 ,  H10N30/098 ,  C08J2327/16

摘要： To provide a piezoelectric body film that can suppress decrease in the piezoelectric constant d31, a method of producing a piezoelectric body film, and a piezoelectric body device. A piezoelectric body film comprising a fluororesin as a piezoelectric material, the fluororesin containing, as a main constituent unit, a repeating unit derived from vinylidene fluoride, a piezoelectric constant d31 of the piezoelectric body film being 20 pC/N or greater, and an extrapolated onset temperature at start of shrinkage determined by TMA measurement being not lower than 90° C. and not higher than 115° C. The difference between piezoelectric constants d31 measured before and after heating the piezoelectric body film at 100° C. for 24 hours relative to the piezoelectric constant d31 before the heating for 24 hours is 20% or less.

公开(公告)号：US20240110054A1

公开(公告)日：2024-04-04

申请号：US18267757

申请日：2021-12-15

申请人： ARKEMA FRANCE

发明人： Fabrice DOMINGUES DOS SANTOS ,  Thibaut SOULESTIN ,  Gilles FRANCOIS ,  Pierre GERARD

IPC分类号： C08L33/12 ,  B06B1/06 ,  H10N30/00 ,  H10N30/098 ,  H10N30/857

CPC分类号： C08L33/12 ,  B06B1/0688 ,  H10N30/098 ,  H10N30/1061 ,  H10N30/857 ,  C08L2203/20

摘要： A composite article including at least one electronic system, integrated onto the surface or in the volume of a thermoplastic matrix. The electronic system includes at least one piezoelectric transducer and means for transmitting an electrical signal. The piezoelectric transducer includes a piezoelectric polymer essentially consisting of, or consisting of, repeating units derived from vinylidene fluoride (VDF) and vinylidene trifluoride (TrFE), the molar proportion of the unit derived from TrFE being from 15% to 50% relative to the total number of moles of the units derived from VDF and TrFE. Also, the use of the electronic system and to the use of the article.

公开(公告)号：US20240084121A1

公开(公告)日：2024-03-14

申请号：US18174920

申请日：2023-02-27

申请人： Meta Platforms Technologies, LLC

发明人： Sheng Ye ,  Jinghui Yang ,  Rui Jian ,  Hao Mei ,  Andrew John Ouderkirk ,  Christopher Yuan Ting Liao ,  Stephen Hsieh ,  Alexander Keener ,  Jonathan Robert Peterson

IPC分类号： C08L27/12 ,  B29C48/00 ,  B29K27/12

CPC分类号： C08L27/12 ,  B29C48/022 ,  H10N30/857 ,  B29K2027/12 ,  C08L2203/16 ,  C08L2205/16

摘要： A mechanically and piezoelectrically anisotropic polymer article is formed from a crystallizable fluoropolymer and a nucleating agent. The polymer article may be a thin film or a fiber, for example. A crystalline phase may constitute at least approximately 50% of the polymer article. In certain examples, a fluoropolymer may include vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and vinyl fluoride. The polymer article may include up to approximately 10 wt. % of the nucleating agent. Such a polymer article is optically transparent, has an elastic modulus of at least approximately 3 GPa, and an electromechanical coupling factor (k31) of at least approximately 0.15.

公开(公告)号：US11930714B2

公开(公告)日：2024-03-12

申请号：US17551206

申请日：2021-12-15

申请人： FUJIFILM Corporation

发明人： Yoshinori Tamada

IPC分类号： H10N30/87 ,  H10N30/857 ,  H10N30/88

CPC分类号： H10N30/874 ,  H10N30/857 ,  H10N30/883

摘要： Provided is a piezoelectric film capable of realizing an electroacoustic conversion film or the like in which the durability is high and a sufficient sound pressure with respect to an input operating voltage is obtained. The piezoelectric film is a piezoelectric film including a polymer-based piezoelectric composite material which contains piezoelectric particles in a matrix containing a polymer material, and electrode layers which are provided on both surfaces of the polymer-based piezoelectric composite material, in which in a case where a cross section of the piezoelectric film in a thickness direction is observed with a scanning electron microscope, the polymer-based piezoelectric composite material is divided into two equal regions in the thickness direction, and void volumes of the two regions are measured, a ratio of the void volume obtained by dividing the void volume of the region with a larger void volume by the void volume of the region with a smaller void volume is 1.2 or greater.

公开(公告)号：US11910159B2

公开(公告)日：2024-02-20

申请号：US17314171

申请日：2021-05-07

申请人： FUJIFILM Corporation

发明人： Tetsu Miyoshi

IPC分类号： H04R17/00 ,  H04R7/06 ,  B32B3/04 ,  B32B7/12 ,  B32B27/20 ,  B32B27/30 ,  H04R1/06 ,  H10N30/50 ,  H10N30/857 ,  H10N30/87

CPC分类号： H04R17/005 ,  B32B3/04 ,  B32B7/12 ,  B32B27/20 ,  B32B27/306 ,  H04R1/06 ,  H04R7/06 ,  H10N30/50 ,  H10N30/857 ,  H10N30/875 ,  B32B2307/20 ,  B32B2307/42 ,  B32B2457/00

摘要： An object is to provide a laminated piezoelectric element capable of preventing a short circuit between adjacent piezoelectric films and an electroacoustic transducer using the laminated piezoelectric element. The object is solved by laminating a plurality of layers of piezoelectric films polarized in a thickness direction, in which a piezoelectric layer is interposed between two thin film electrodes, and causing polarization directions of the adjacent piezoelectric films to be opposite to each other.