公开(公告)号：US11665969B2

公开(公告)日：2023-05-30

申请号：US16041858

申请日：2018-07-23

申请人： Meta Platforms Technologies, LLC

发明人： Andrew John Ouderkirk ,  Katherine Marie Smyth ,  Eric C. Schmitt ,  Nagi H. Elabbasi

IPC分类号： H01L41/193 ,  H01L41/047 ,  H01L41/09 ,  H01L41/29 ,  H01L41/317 ,  H01L41/45 ,  H01L41/18 ,  H01L41/083 ,  A61B3/00 ,  A61B3/103 ,  G02B27/00 ,  G02B27/01 ,  H01M4/04 ,  H01M4/60 ,  H01L41/293 ,  A61B3/06

CPC分类号： H01L41/193 ,  A61B3/0008 ,  A61B3/0033 ,  A61B3/0075 ,  A61B3/103 ,  G02B27/0025 ,  G02B27/0172 ,  G02B27/0176 ,  H01L41/047 ,  H01L41/0472 ,  H01L41/083 ,  H01L41/09 ,  H01L41/092 ,  H01L41/0986 ,  H01L41/183 ,  H01L41/29 ,  H01L41/293 ,  H01L41/317 ,  H01L41/45 ,  H01M4/0428 ,  H01M4/602 ,  A61B3/06 ,  G02B2027/0178

摘要： An electroactive device may include (1) an electroactive polymer element having a first surface and a second surface opposite the first surface, the electroactive polymer element comprising a nanovoided polymer material, (2) a primary electrode abutting the first surface of the electroactive polymer element, and (3) a secondary electrode abutting the second surface of the electroactive polymer element. The electroactive polymer element may be deformable from an initial state to a deformed state by application of an electrostatic field produced by a potential difference between the primary electrode and the secondary electrode. Various other devices, systems, and methods are also disclosed.

公开(公告)号：US11620881B2

公开(公告)日：2023-04-04

申请号：US16484275

申请日：2018-01-26

申请人： CHUNGANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

发明人： Seung Tae Choi

IPC分类号： H01L41/193 ,  G08B6/00 ,  B06B1/06 ,  D01F6/12 ,  H01L41/08 ,  D03D15/00

摘要： Provided are a haptic feedback fiber body, a haptic feedback fabric, and a wearable device. The haptic feedback fiber body can include a core fiber having a first electrode to surround the outer surface thereof, and a vibrating fiber, provided so as to intermittently contact the outer surface of the core fiber, including a second electrode on the inner surface thereof, wherein a piezoelectric polymer is provided on the outer surface of the first electrode or on the inner surface of the second electrode to generate fretting vibrations when the polymer is in close contact with the first electrode or the second electrode on which the piezoelectric polymer is disposed opposite to each other.

公开(公告)号：US11617816B2

公开(公告)日：2023-04-04

申请号：US16502840

申请日：2019-07-03

申请人： New Jersey Institute of Technology

发明人： Treena Arinzeh ,  Michael Jaffe ,  Amir Hossein Rajabi

IPC分类号： A61L27/24 ,  D01D5/00 ,  C12M1/12 ,  C12N5/0775 ,  C12N5/0793 ,  D01F4/00 ,  H01L41/253 ,  H01L41/193 ,  C07K1/00

摘要： The present invention provides novel methods for poling piezoelectric materials, e.g., collagen, which are carried out in the absence of liquid media and at a relatively low temperature. The present invention also provides electroactive scaffolds comprising poled collagen for promoting cell growth and differentiation.

公开(公告)号：US11575082B2

公开(公告)日：2023-02-07

申请号：US16345402

申请日：2017-10-27

申请人： TEIJIN LIMITED ,  KANSAI UNIVERSITY

发明人： Yoshiro Tajitsu ,  Shunsuke Kanematsu ,  Yuhei Ono

IPC分类号： D04B1/16 ,  H01L41/08 ,  H01L41/193 ,  D04B1/22 ,  D04B21/16 ,  D04B21/20 ,  D04C1/02 ,  D04C1/12 ,  G01B7/16 ,  H01L41/04 ,  H01L41/053 ,  H01L41/113 ,  H01L41/087

摘要： A structure includes an oriented piezoelectric polymer arranged in a circular tubular or circular columnar shape, wherein the orientation angle of the piezoelectric polymer with respect to the central axis of the structure is 15° to 75°, the piezoelectric polymer includes a crystalline polymer having an absolute value of 0.1 to 1000 pC/N for the piezoelectric constant d14 when the orientation axis is the third axis, and the piezoelectric polymer includes a P-body containing a crystalline polymer with a positive piezoelectric constant d14 value and an N-body containing a crystalline polymer with a negative value, wherein for the portion of the central axis of the structure having a length of 1 cm, the value of T1/T2 is 0 to 0.8, T1 being the smaller and T2 being the larger of (ZP+SN) and (SP+ZN), where ZP, SP, ZN, and SN are particularly defined masses.

公开(公告)号：US11563166B2

公开(公告)日：2023-01-24

申请号：US16812752

申请日：2020-03-09

申请人： INVENSENSE, INC.

发明人： Chienliu Chang

IPC分类号： H01L41/257 ,  B06B1/02 ,  B06B1/06 ,  H01L41/04 ,  H01L41/047 ,  H01L41/193 ,  H01L41/29 ,  H01L41/332 ,  H01L41/08 ,  G06V40/13

摘要： An array of piezoelectric micromachined ultrasound transducers (PMUTs) has a layer of piezoelectric material that requires poling during fabrication in order to properly align the piezoelectric dipoles to create a desired ultrasonic signal. The PMUT may have an interconnected set of lower electrodes that are fabricated between a processing layer of the PMUT and the piezoelectric layer. An upper electrode is fabricated overlaying the piezoelectric layer, and a poling voltage is applied between the upper electrode and the interconnected set of lower electrodes. After poling is complete, portions of the interconnected set of lower electrodes are removed to permanently isolate permanent lower electrodes from each other.

公开(公告)号：US11556177B2

公开(公告)日：2023-01-17

申请号：US17238852

申请日：2021-04-23

申请人： Murata Manufacturing Co., Ltd.

发明人： Toru Tominaga ,  Takashi Kihara ,  Hidekazu Kano ,  Jun Endo

IPC分类号： G08B6/00 ,  G06F3/01 ,  B06B1/06 ,  G06F3/0354 ,  H01L41/193

摘要： A vibration device that includes a vibration unit that has a vibrator which vibrates in a plane direction; and a sensor arranged on at least a portion of the vibration unit around the vibrator in a plan view of the vibration unit, and the sensor is constructed to detect a pressing operation in a direction normal to a pressing surface of the vibration device.

公开(公告)号：US20230006128A1

公开(公告)日：2023-01-05

申请号：US17809813

申请日：2022-06-29

申请人： SEIKO EPSON CORPORATION

发明人： Toshiki HARA ,  Takayuki YONEMURA ,  Jiro KATO

IPC分类号： H01L41/193 ,  H01L41/047 ,  H01L41/45

摘要： A piezoelectric element includes: a piezoelectric body having a first surface and a second surface that are different from each other; a first electrode provided at the first surface; and a second electrode provided at the second surface. The piezoelectric body contains a helical chiral polymer crystal having an orientation axis as a crystal axis, the orientation axis is uniaxially oriented in a manner of intersecting both the first surface and the second surface, and a degree of orientation of the orientation axis in the piezoelectric body is 0.80 or more.

公开(公告)号：US11538980B2

公开(公告)日：2022-12-27

申请号：US16305430

申请日：2017-06-07

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Achim Hilgers ,  Daan Anton Van Den Ende ,  Mark Thomas Johnson ,  Roland Alexander Van De Molengraaf

IPC分类号： H01L41/107 ,  H01L27/20 ,  C08L27/16 ,  H01L41/047 ,  H01L41/083 ,  H01L41/193

摘要： An actuator device has an electroactive polymer actuator (35) and an integrated piezoelectric transformer (30) whose primary side (32) and secondary side (34) are formed from different electroactive polymer materials. At least the secondary side (34) of the transformer shares a piezoelectric electroactive polymer layer (36) with the electroactive polymer actuator, so that lower external voltages can be applied to the device.

公开(公告)号：US11534929B2

公开(公告)日：2022-12-27

申请号：US16080902

申请日：2016-12-14

申请人： Ricoh Company, Ltd.

发明人： Junichiro Natori ,  Tsuneaki Kondoh ,  Tomoaki Sugawara ,  Mayuka Araumi ,  Takahiro Imai ,  Hideyuki Miyazawa ,  Mizuki Otagiri

IPC分类号： H01L41/00 ,  B25J19/06 ,  G01L1/16 ,  B25J13/08 ,  H01L41/113 ,  H01L41/253 ,  H01L41/193 ,  B25J19/02 ,  B32B25/20 ,  G05B19/048 ,  B32B15/06

摘要： Emergency stop pressure sensors 17 are installed on both side surfaces of a movable link 11 of a robot arm 14 of an assembly robot. When a worker S unintentionally walks in a swing range Ra of the robot arm 14 and contacts the emergency stop pressure sensor 17, a detection signal is transmitted to a control unit 19, and the control unit 19 shuts power transmission to a driving source swinging the robot arm. The emergency stop pressure sensor 17 has a first electrode and a second electrode constituting a pair of electrodes and an intermediate layer formed of rubber or a rubber composition, which is disposed between the pair of electrodes, the intermediate layer generating power upon deformation caused by contact with a contacted body (the worker). A side of the intermediate layer in a laminate direction undergoes surface modification treatment and/or inactivation treatment. With this treatment, the one side and the other side of the intermediate layer have different degrees of deformation to the same deformation adding force.

公开(公告)号：US11504498B2

公开(公告)日：2022-11-22

申请号：US16384189

申请日：2019-04-15

申请人： Murata Manufacturing Co., Ltd.

发明人： Yoshihiko Nishizawa

IPC分类号： G06F3/0354 ,  A61M25/00 ,  H01L41/047 ,  H01L41/113 ,  A61J15/00 ,  H01L41/193

摘要： A grip detection sensor that includes: a piezoelectric film having a first main surface and a second main surface, either one of the first main surface and the second main surface being disposed at least partly on a periphery of a linearly shaped flexible object, a first electrode on the first main surface, a second electrode on the second main surface, and a spacer configured to maintain a space between the object and the piezoelectric film.